зеркало из https://github.com/mozilla/gecko-dev.git
5958 строки
207 KiB
C++
5958 строки
207 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Attributes.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/EventStateManager.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/IMEStateManager.h"
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#include "mozilla/MiscEvents.h"
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#include "mozilla/MathAlgorithms.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TextComposition.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TouchEvents.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/dom/DragEvent.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/TabChild.h"
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#include "mozilla/dom/TabParent.h"
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#include "mozilla/dom/UIEvent.h"
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#include "ContentEventHandler.h"
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#include "IMEContentObserver.h"
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#include "WheelHandlingHelper.h"
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#include "nsCOMPtr.h"
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#include "nsFocusManager.h"
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#include "nsIContent.h"
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#include "nsIContentInlines.h"
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#include "nsIDocument.h"
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#include "nsIFrame.h"
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#include "nsIWidget.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsGkAtoms.h"
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#include "nsIFormControl.h"
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#include "nsIComboboxControlFrame.h"
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#include "nsIScrollableFrame.h"
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#include "nsIDOMHTMLElement.h"
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#include "nsIDOMXULControlElement.h"
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#include "nsNameSpaceManager.h"
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#include "nsIBaseWindow.h"
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#include "nsISelection.h"
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#include "nsITextControlElement.h"
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#include "nsFrameSelection.h"
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#include "nsPIDOMWindow.h"
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#include "nsPIWindowRoot.h"
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#include "nsIWebNavigation.h"
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#include "nsIContentViewer.h"
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#include "nsFrameManager.h"
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#include "nsITabChild.h"
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#include "nsPluginFrame.h"
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#include "nsMenuPopupFrame.h"
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#include "nsIDOMXULElement.h"
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#include "nsIDOMKeyEvent.h"
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#include "nsIObserverService.h"
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#include "nsIDocShell.h"
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#include "nsIDOMWheelEvent.h"
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#include "nsIDOMUIEvent.h"
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#include "nsIMozBrowserFrame.h"
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#include "nsSubDocumentFrame.h"
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#include "nsLayoutUtils.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsUnicharUtils.h"
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#include "nsContentUtils.h"
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#include "imgIContainer.h"
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#include "nsIProperties.h"
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#include "nsISupportsPrimitives.h"
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#include "nsServiceManagerUtils.h"
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#include "nsITimer.h"
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#include "nsFontMetrics.h"
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#include "nsIDOMXULDocument.h"
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#include "nsIDragService.h"
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#include "nsIDragSession.h"
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#include "mozilla/dom/DataTransfer.h"
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#include "nsContentAreaDragDrop.h"
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#ifdef MOZ_XUL
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#include "nsTreeBodyFrame.h"
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#endif
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#include "nsIController.h"
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#include "nsICommandParams.h"
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#include "mozilla/Services.h"
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#include "mozilla/dom/ContentParent.h"
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#include "mozilla/dom/HTMLLabelElement.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/LookAndFeel.h"
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#include "GeckoProfiler.h"
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#include "Units.h"
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#include "mozilla/layers/APZCTreeManager.h"
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#include "nsIObjectLoadingContent.h"
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#ifdef XP_MACOSX
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#import <ApplicationServices/ApplicationServices.h>
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#endif
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namespace mozilla {
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using namespace dom;
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//#define DEBUG_DOCSHELL_FOCUS
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#define NS_USER_INTERACTION_INTERVAL 5000 // ms
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static const LayoutDeviceIntPoint kInvalidRefPoint = LayoutDeviceIntPoint(-1,-1);
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static uint32_t gMouseOrKeyboardEventCounter = 0;
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static nsITimer* gUserInteractionTimer = nullptr;
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static nsITimerCallback* gUserInteractionTimerCallback = nullptr;
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static const double kCursorLoadingTimeout = 1000; // ms
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static AutoWeakFrame gLastCursorSourceFrame;
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static TimeStamp gLastCursorUpdateTime;
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static inline int32_t
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RoundDown(double aDouble)
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{
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return (aDouble > 0) ? static_cast<int32_t>(floor(aDouble)) :
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static_cast<int32_t>(ceil(aDouble));
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}
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#ifdef DEBUG_DOCSHELL_FOCUS
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static void
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PrintDocTree(nsIDocShellTreeItem* aParentItem, int aLevel)
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{
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for (int32_t i=0;i<aLevel;i++) printf(" ");
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int32_t childWebshellCount;
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aParentItem->GetChildCount(&childWebshellCount);
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nsCOMPtr<nsIDocShell> parentAsDocShell(do_QueryInterface(aParentItem));
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int32_t type = aParentItem->ItemType();
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nsCOMPtr<nsIPresShell> presShell = parentAsDocShell->GetPresShell();
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RefPtr<nsPresContext> presContext;
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parentAsDocShell->GetPresContext(getter_AddRefs(presContext));
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nsCOMPtr<nsIContentViewer> cv;
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parentAsDocShell->GetContentViewer(getter_AddRefs(cv));
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nsCOMPtr<nsIDOMDocument> domDoc;
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if (cv)
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cv->GetDOMDocument(getter_AddRefs(domDoc));
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nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
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nsCOMPtr<nsIDOMWindow> domwin = doc ? doc->GetWindow() : nullptr;
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nsIURI* uri = doc ? doc->GetDocumentURI() : nullptr;
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printf("DS %p Type %s Cnt %d Doc %p DW %p EM %p%c",
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static_cast<void*>(parentAsDocShell.get()),
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type==nsIDocShellTreeItem::typeChrome?"Chrome":"Content",
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childWebshellCount, static_cast<void*>(doc.get()),
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static_cast<void*>(domwin.get()),
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static_cast<void*>(presContext ? presContext->EventStateManager() : nullptr),
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uri ? ' ' : '\n');
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if (uri) {
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nsAutoCString spec;
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uri->GetSpec(spec);
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printf("\"%s\"\n", spec.get());
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}
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if (childWebshellCount > 0) {
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for (int32_t i = 0; i < childWebshellCount; i++) {
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nsCOMPtr<nsIDocShellTreeItem> child;
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aParentItem->GetChildAt(i, getter_AddRefs(child));
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PrintDocTree(child, aLevel + 1);
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}
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}
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}
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static void
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PrintDocTreeAll(nsIDocShellTreeItem* aItem)
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{
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nsCOMPtr<nsIDocShellTreeItem> item = aItem;
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for(;;) {
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nsCOMPtr<nsIDocShellTreeItem> parent;
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item->GetParent(getter_AddRefs(parent));
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if (!parent)
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break;
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item = parent;
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}
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PrintDocTree(item, 0);
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}
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#endif
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/******************************************************************/
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/* mozilla::UITimerCallback */
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/******************************************************************/
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class UITimerCallback final :
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public nsITimerCallback,
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public nsINamed
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{
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public:
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UITimerCallback() : mPreviousCount(0) {}
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NS_DECL_ISUPPORTS
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NS_DECL_NSITIMERCALLBACK
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NS_DECL_NSINAMED
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private:
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~UITimerCallback() = default;
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uint32_t mPreviousCount;
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};
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NS_IMPL_ISUPPORTS(UITimerCallback, nsITimerCallback, nsINamed)
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// If aTimer is nullptr, this method always sends "user-interaction-inactive"
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// notification.
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NS_IMETHODIMP
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UITimerCallback::Notify(nsITimer* aTimer)
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{
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nsCOMPtr<nsIObserverService> obs =
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mozilla::services::GetObserverService();
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if (!obs)
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return NS_ERROR_FAILURE;
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if ((gMouseOrKeyboardEventCounter == mPreviousCount) || !aTimer) {
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gMouseOrKeyboardEventCounter = 0;
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obs->NotifyObservers(nullptr, "user-interaction-inactive", nullptr);
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if (gUserInteractionTimer) {
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gUserInteractionTimer->Cancel();
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NS_RELEASE(gUserInteractionTimer);
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}
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} else {
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obs->NotifyObservers(nullptr, "user-interaction-active", nullptr);
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EventStateManager::UpdateUserActivityTimer();
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}
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mPreviousCount = gMouseOrKeyboardEventCounter;
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return NS_OK;
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}
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NS_IMETHODIMP
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UITimerCallback::GetName(nsACString& aName)
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{
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aName.AssignASCII("UITimerCallback_timer");
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return NS_OK;
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}
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/******************************************************************/
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/* mozilla::OverOutElementsWrapper */
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/******************************************************************/
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OverOutElementsWrapper::OverOutElementsWrapper()
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: mLastOverFrame(nullptr)
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{
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}
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OverOutElementsWrapper::~OverOutElementsWrapper() = default;
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NS_IMPL_CYCLE_COLLECTION(OverOutElementsWrapper,
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mLastOverElement,
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mFirstOverEventElement,
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mFirstOutEventElement)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(OverOutElementsWrapper)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(OverOutElementsWrapper)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(OverOutElementsWrapper)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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/******************************************************************/
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/* mozilla::EventStateManager */
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/******************************************************************/
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static uint32_t sESMInstanceCount = 0;
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static bool sPointerEventEnabled = false;
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uint64_t EventStateManager::sUserInputCounter = 0;
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int32_t EventStateManager::sUserInputEventDepth = 0;
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bool EventStateManager::sNormalLMouseEventInProcess = false;
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EventStateManager* EventStateManager::sActiveESM = nullptr;
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nsIDocument* EventStateManager::sMouseOverDocument = nullptr;
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AutoWeakFrame EventStateManager::sLastDragOverFrame = nullptr;
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LayoutDeviceIntPoint EventStateManager::sPreLockPoint = LayoutDeviceIntPoint(0, 0);
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LayoutDeviceIntPoint EventStateManager::sLastRefPoint = kInvalidRefPoint;
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CSSIntPoint EventStateManager::sLastScreenPoint = CSSIntPoint(0, 0);
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LayoutDeviceIntPoint EventStateManager::sSynthCenteringPoint = kInvalidRefPoint;
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CSSIntPoint EventStateManager::sLastClientPoint = CSSIntPoint(0, 0);
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bool EventStateManager::sIsPointerLocked = false;
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// Reference to the pointer locked element.
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nsWeakPtr EventStateManager::sPointerLockedElement;
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// Reference to the document which requested pointer lock.
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nsWeakPtr EventStateManager::sPointerLockedDoc;
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nsCOMPtr<nsIContent> EventStateManager::sDragOverContent = nullptr;
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TimeStamp EventStateManager::sLatestUserInputStart;
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TimeStamp EventStateManager::sHandlingInputStart;
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EventStateManager::WheelPrefs*
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EventStateManager::WheelPrefs::sInstance = nullptr;
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bool EventStateManager::WheelPrefs::sWheelEventsEnabledOnPlugins = true;
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EventStateManager::DeltaAccumulator*
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EventStateManager::DeltaAccumulator::sInstance = nullptr;
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EventStateManager::EventStateManager()
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: mLockCursor(0)
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, mLastFrameConsumedSetCursor(false)
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, mCurrentTarget(nullptr)
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// init d&d gesture state machine variables
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, mGestureDownPoint(0,0)
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, mPresContext(nullptr)
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, mLClickCount(0)
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, mMClickCount(0)
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, mRClickCount(0)
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, mInTouchDrag(false)
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, m_haveShutdown(false)
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{
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if (sESMInstanceCount == 0) {
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gUserInteractionTimerCallback = new UITimerCallback();
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if (gUserInteractionTimerCallback)
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NS_ADDREF(gUserInteractionTimerCallback);
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UpdateUserActivityTimer();
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}
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++sESMInstanceCount;
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static bool sAddedPointerEventEnabled = false;
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if (!sAddedPointerEventEnabled) {
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Preferences::AddBoolVarCache(&sPointerEventEnabled,
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"dom.w3c_pointer_events.enabled", false);
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sAddedPointerEventEnabled = true;
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}
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WheelTransaction::InitializeStatics();
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}
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nsresult
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EventStateManager::UpdateUserActivityTimer()
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{
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if (!gUserInteractionTimerCallback)
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return NS_OK;
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if (!gUserInteractionTimer) {
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CallCreateInstance("@mozilla.org/timer;1", &gUserInteractionTimer);
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if (gUserInteractionTimer) {
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gUserInteractionTimer->SetTarget(
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SystemGroup::EventTargetFor(TaskCategory::Other));
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}
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}
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if (gUserInteractionTimer) {
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gUserInteractionTimer->InitWithCallback(gUserInteractionTimerCallback,
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NS_USER_INTERACTION_INTERVAL,
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nsITimer::TYPE_ONE_SHOT);
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}
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return NS_OK;
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}
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nsresult
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EventStateManager::Init()
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{
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nsCOMPtr<nsIObserverService> observerService =
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mozilla::services::GetObserverService();
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if (!observerService)
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return NS_ERROR_FAILURE;
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observerService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, true);
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if (sESMInstanceCount == 1) {
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Prefs::Init();
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}
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return NS_OK;
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}
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EventStateManager::~EventStateManager()
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{
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ReleaseCurrentIMEContentObserver();
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if (sActiveESM == this) {
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sActiveESM = nullptr;
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}
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if (Prefs::ClickHoldContextMenu())
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KillClickHoldTimer();
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if (mDocument == sMouseOverDocument)
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sMouseOverDocument = nullptr;
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--sESMInstanceCount;
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if(sESMInstanceCount == 0) {
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WheelTransaction::Shutdown();
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if (gUserInteractionTimerCallback) {
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gUserInteractionTimerCallback->Notify(nullptr);
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NS_RELEASE(gUserInteractionTimerCallback);
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}
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if (gUserInteractionTimer) {
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gUserInteractionTimer->Cancel();
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NS_RELEASE(gUserInteractionTimer);
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}
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Prefs::Shutdown();
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WheelPrefs::Shutdown();
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DeltaAccumulator::Shutdown();
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}
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if (sDragOverContent && sDragOverContent->OwnerDoc() == mDocument) {
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sDragOverContent = nullptr;
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}
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if (!m_haveShutdown) {
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Shutdown();
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// Don't remove from Observer service in Shutdown because Shutdown also
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// gets called from xpcom shutdown observer. And we don't want to remove
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// from the service in that case.
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nsCOMPtr<nsIObserverService> observerService =
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mozilla::services::GetObserverService();
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if (observerService) {
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observerService->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID);
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}
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}
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}
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nsresult
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EventStateManager::Shutdown()
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{
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m_haveShutdown = true;
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return NS_OK;
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}
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NS_IMETHODIMP
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EventStateManager::Observe(nsISupports* aSubject,
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const char* aTopic,
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const char16_t *someData)
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{
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if (!nsCRT::strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {
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Shutdown();
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}
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return NS_OK;
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}
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(EventStateManager)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIObserver)
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NS_INTERFACE_MAP_ENTRY(nsIObserver)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(EventStateManager)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(EventStateManager)
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NS_IMPL_CYCLE_COLLECTION(EventStateManager,
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mCurrentTargetContent,
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mGestureDownContent,
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mGestureDownFrameOwner,
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mLastLeftMouseDownContent,
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mLastLeftMouseDownContentParent,
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mLastMiddleMouseDownContent,
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mLastMiddleMouseDownContentParent,
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mLastRightMouseDownContent,
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mLastRightMouseDownContentParent,
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mActiveContent,
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mHoverContent,
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mURLTargetContent,
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mMouseEnterLeaveHelper,
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mPointersEnterLeaveHelper,
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mDocument,
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mIMEContentObserver,
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mAccessKeys)
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void
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EventStateManager::ReleaseCurrentIMEContentObserver()
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{
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if (mIMEContentObserver) {
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mIMEContentObserver->DisconnectFromEventStateManager();
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}
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mIMEContentObserver = nullptr;
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}
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void
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EventStateManager::OnStartToObserveContent(
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IMEContentObserver* aIMEContentObserver)
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{
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if (mIMEContentObserver == aIMEContentObserver) {
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return;
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}
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ReleaseCurrentIMEContentObserver();
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mIMEContentObserver = aIMEContentObserver;
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}
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void
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EventStateManager::OnStopObservingContent(
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IMEContentObserver* aIMEContentObserver)
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{
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aIMEContentObserver->DisconnectFromEventStateManager();
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NS_ENSURE_TRUE_VOID(mIMEContentObserver == aIMEContentObserver);
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mIMEContentObserver = nullptr;
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}
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void
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EventStateManager::TryToFlushPendingNotificationsToIME()
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{
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if (mIMEContentObserver) {
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mIMEContentObserver->TryToFlushPendingNotifications(true);
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}
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}
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static bool
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IsMessageMouseUserActivity(EventMessage aMessage)
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{
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return aMessage == eMouseMove ||
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aMessage == eMouseUp ||
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aMessage == eMouseDown ||
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aMessage == eMouseAuxClick ||
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aMessage == eMouseDoubleClick ||
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aMessage == eMouseClick ||
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aMessage == eMouseActivate ||
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aMessage == eMouseLongTap;
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}
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static bool
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IsMessageGamepadUserActivity(EventMessage aMessage)
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{
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return aMessage == eGamepadButtonDown ||
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aMessage == eGamepadButtonUp ||
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aMessage == eGamepadAxisMove;
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}
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|
nsresult
|
|
EventStateManager::PreHandleEvent(nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
nsIFrame* aTargetFrame,
|
|
nsIContent* aTargetContent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aStatus);
|
|
NS_ENSURE_ARG(aPresContext);
|
|
if (!aEvent) {
|
|
NS_ERROR("aEvent is null. This should never happen.");
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
NS_WARNING_ASSERTION(
|
|
!aTargetFrame || !aTargetFrame->GetContent() ||
|
|
aTargetFrame->GetContent() == aTargetContent ||
|
|
aTargetFrame->GetContent()->GetFlattenedTreeParent() == aTargetContent ||
|
|
aTargetFrame->IsGeneratedContentFrame(),
|
|
"aTargetFrame should be related with aTargetContent");
|
|
#if DEBUG
|
|
if (aTargetFrame && aTargetFrame->IsGeneratedContentFrame()) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
aTargetFrame->GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
MOZ_ASSERT(aTargetContent == targetContent,
|
|
"Unexpected target for generated content frame!");
|
|
}
|
|
#endif
|
|
|
|
mCurrentTarget = aTargetFrame;
|
|
mCurrentTargetContent = nullptr;
|
|
|
|
// Do not take account eMouseEnterIntoWidget/ExitFromWidget so that loading
|
|
// a page when user is not active doesn't change the state to active.
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
if (aEvent->IsTrusted() &&
|
|
((mouseEvent && mouseEvent->IsReal() &&
|
|
IsMessageMouseUserActivity(mouseEvent->mMessage)) ||
|
|
aEvent->mClass == eWheelEventClass ||
|
|
aEvent->mClass == ePointerEventClass ||
|
|
aEvent->mClass == eTouchEventClass ||
|
|
aEvent->mClass == eKeyboardEventClass ||
|
|
IsMessageGamepadUserActivity(aEvent->mMessage))) {
|
|
if (gMouseOrKeyboardEventCounter == 0) {
|
|
nsCOMPtr<nsIObserverService> obs =
|
|
mozilla::services::GetObserverService();
|
|
if (obs) {
|
|
obs->NotifyObservers(nullptr, "user-interaction-active", nullptr);
|
|
UpdateUserActivityTimer();
|
|
}
|
|
}
|
|
++gMouseOrKeyboardEventCounter;
|
|
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aTargetContent);
|
|
if (node &&
|
|
(aEvent->mMessage == eKeyUp || aEvent->mMessage == eMouseUp ||
|
|
aEvent->mMessage == eWheel || aEvent->mMessage == eTouchEnd ||
|
|
aEvent->mMessage == ePointerUp)) {
|
|
nsIDocument* doc = node->OwnerDoc();
|
|
while (doc && !doc->UserHasInteracted()) {
|
|
doc->SetUserHasInteracted(true);
|
|
doc = nsContentUtils::IsChildOfSameType(doc) ?
|
|
doc->GetParentDocument() : nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
WheelTransaction::OnEvent(aEvent);
|
|
|
|
// Focus events don't necessarily need a frame.
|
|
if (!mCurrentTarget && !aTargetContent) {
|
|
NS_ERROR("mCurrentTarget and aTargetContent are null");
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
#ifdef DEBUG
|
|
if (aEvent->HasDragEventMessage() && sIsPointerLocked) {
|
|
NS_ASSERTION(sIsPointerLocked,
|
|
"sIsPointerLocked is true. Drag events should be suppressed when "
|
|
"the pointer is locked.");
|
|
}
|
|
#endif
|
|
// Store last known screenPoint and clientPoint so pointer lock
|
|
// can use these values as constants.
|
|
if (aEvent->IsTrusted() &&
|
|
((mouseEvent && mouseEvent->IsReal()) ||
|
|
aEvent->mClass == eWheelEventClass) &&
|
|
!sIsPointerLocked) {
|
|
sLastScreenPoint =
|
|
Event::GetScreenCoords(aPresContext, aEvent, aEvent->mRefPoint);
|
|
sLastClientPoint =
|
|
Event::GetClientCoords(aPresContext, aEvent, aEvent->mRefPoint,
|
|
CSSIntPoint(0, 0));
|
|
}
|
|
|
|
*aStatus = nsEventStatus_eIgnore;
|
|
|
|
if (aEvent->mClass == eQueryContentEventClass) {
|
|
HandleQueryContentEvent(aEvent->AsQueryContentEvent());
|
|
return NS_OK;
|
|
}
|
|
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
if (touchEvent && mInTouchDrag) {
|
|
if (touchEvent->mMessage == eTouchMove) {
|
|
GenerateDragGesture(aPresContext, touchEvent);
|
|
} else {
|
|
mInTouchDrag = false;
|
|
StopTrackingDragGesture();
|
|
}
|
|
}
|
|
|
|
switch (aEvent->mMessage) {
|
|
case eContextMenu:
|
|
if (sIsPointerLocked) {
|
|
return NS_ERROR_DOM_INVALID_STATE_ERR;
|
|
}
|
|
break;
|
|
case eMouseTouchDrag:
|
|
mInTouchDrag = true;
|
|
BeginTrackingDragGesture(aPresContext, mouseEvent, aTargetFrame);
|
|
break;
|
|
case eMouseDown: {
|
|
switch (mouseEvent->button) {
|
|
case WidgetMouseEvent::eLeftButton:
|
|
BeginTrackingDragGesture(aPresContext, mouseEvent, aTargetFrame);
|
|
mLClickCount = mouseEvent->mClickCount;
|
|
SetClickCount(mouseEvent, aStatus);
|
|
sNormalLMouseEventInProcess = true;
|
|
break;
|
|
case WidgetMouseEvent::eMiddleButton:
|
|
mMClickCount = mouseEvent->mClickCount;
|
|
SetClickCount(mouseEvent, aStatus);
|
|
break;
|
|
case WidgetMouseEvent::eRightButton:
|
|
mRClickCount = mouseEvent->mClickCount;
|
|
SetClickCount(mouseEvent, aStatus);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case eMouseUp: {
|
|
switch (mouseEvent->button) {
|
|
case WidgetMouseEvent::eLeftButton:
|
|
if (Prefs::ClickHoldContextMenu()) {
|
|
KillClickHoldTimer();
|
|
}
|
|
StopTrackingDragGesture();
|
|
sNormalLMouseEventInProcess = false;
|
|
// then fall through...
|
|
MOZ_FALLTHROUGH;
|
|
case WidgetMouseEvent::eRightButton:
|
|
case WidgetMouseEvent::eMiddleButton:
|
|
SetClickCount(mouseEvent, aStatus);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case eMouseEnterIntoWidget:
|
|
// In some cases on e10s eMouseEnterIntoWidget
|
|
// event was sent twice into child process of content.
|
|
// (From specific widget code (sending is not permanent) and
|
|
// from ESM::DispatchMouseOrPointerEvent (sending is permanent)).
|
|
// IsCrossProcessForwardingStopped() helps to suppress sending accidental
|
|
// event from widget code.
|
|
aEvent->StopCrossProcessForwarding();
|
|
break;
|
|
case eMouseExitFromWidget:
|
|
// If this is a remote frame, we receive eMouseExitFromWidget from the
|
|
// parent the mouse exits our content. Since the parent may update the
|
|
// cursor while the mouse is outside our frame, and since PuppetWidget
|
|
// caches the current cursor internally, re-entering our content (say from
|
|
// over a window edge) wont update the cursor if the cached value and the
|
|
// current cursor match. So when the mouse exits a remote frame, clear the
|
|
// cached widget cursor so a proper update will occur when the mouse
|
|
// re-enters.
|
|
if (XRE_IsContentProcess()) {
|
|
ClearCachedWidgetCursor(mCurrentTarget);
|
|
}
|
|
|
|
// IsCrossProcessForwardingStopped() helps to suppress double event sending
|
|
// into process of content.
|
|
// For more information see comment above, at eMouseEnterIntoWidget case.
|
|
aEvent->StopCrossProcessForwarding();
|
|
|
|
// If the event is not a top-level window exit, then it's not
|
|
// really an exit --- we may have traversed widget boundaries but
|
|
// we're still in our toplevel window.
|
|
if (mouseEvent->mExitFrom != WidgetMouseEvent::eTopLevel) {
|
|
// Treat it as a synthetic move so we don't generate spurious
|
|
// "exit" or "move" events. Any necessary "out" or "over" events
|
|
// will be generated by GenerateMouseEnterExit
|
|
mouseEvent->mMessage = eMouseMove;
|
|
mouseEvent->mReason = WidgetMouseEvent::eSynthesized;
|
|
// then fall through...
|
|
} else {
|
|
if (sPointerEventEnabled) {
|
|
// We should synthetize corresponding pointer events
|
|
GeneratePointerEnterExit(ePointerLeave, mouseEvent);
|
|
}
|
|
GenerateMouseEnterExit(mouseEvent);
|
|
//This is a window level mouse exit event and should stop here
|
|
aEvent->mMessage = eVoidEvent;
|
|
break;
|
|
}
|
|
MOZ_FALLTHROUGH;
|
|
case eMouseMove:
|
|
case ePointerDown:
|
|
case ePointerMove: {
|
|
// on the Mac, GenerateDragGesture() may not return until the drag
|
|
// has completed and so |aTargetFrame| may have been deleted (moving
|
|
// a bookmark, for example). If this is the case, however, we know
|
|
// that ClearFrameRefs() has been called and it cleared out
|
|
// |mCurrentTarget|. As a result, we should pass |mCurrentTarget|
|
|
// into UpdateCursor().
|
|
GenerateDragGesture(aPresContext, mouseEvent);
|
|
UpdateCursor(aPresContext, aEvent, mCurrentTarget, aStatus);
|
|
GenerateMouseEnterExit(mouseEvent);
|
|
// Flush pending layout changes, so that later mouse move events
|
|
// will go to the right nodes.
|
|
FlushPendingEvents(aPresContext);
|
|
break;
|
|
}
|
|
case ePointerGotCapture:
|
|
GenerateMouseEnterExit(mouseEvent);
|
|
break;
|
|
case eDragStart:
|
|
if (Prefs::ClickHoldContextMenu()) {
|
|
// an external drag gesture event came in, not generated internally
|
|
// by Gecko. Make sure we get rid of the click-hold timer.
|
|
KillClickHoldTimer();
|
|
}
|
|
break;
|
|
case eDragOver:
|
|
// Send the enter/exit events before eDrop.
|
|
GenerateDragDropEnterExit(aPresContext, aEvent->AsDragEvent());
|
|
break;
|
|
|
|
case eKeyPress:
|
|
{
|
|
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
|
|
if (keyEvent->ModifiersMatchWithAccessKey(AccessKeyType::eChrome) ||
|
|
keyEvent->ModifiersMatchWithAccessKey(AccessKeyType::eContent)) {
|
|
// If the eKeyPress event will be sent to a remote process, this
|
|
// process needs to wait reply from the remote process for checking if
|
|
// preceding eKeyDown event is consumed. If preceding eKeyDown event
|
|
// is consumed in the remote process, TabChild won't send the event
|
|
// back to this process. So, only when this process receives a reply
|
|
// eKeyPress event in TabParent, we should handle accesskey in this
|
|
// process.
|
|
if (IsRemoteTarget(GetFocusedContent())) {
|
|
// However, if there is no accesskey target for the key combination,
|
|
// we don't need to wait reply from the remote process. Otherwise,
|
|
// Mark the event as waiting reply from remote process and stop
|
|
// propagation in this process.
|
|
if (CheckIfEventMatchesAccessKey(keyEvent, aPresContext)) {
|
|
keyEvent->StopPropagation();
|
|
keyEvent->MarkAsWaitingReplyFromRemoteProcess();
|
|
}
|
|
}
|
|
// If the event target is in this process, we can handle accesskey now
|
|
// since if preceding eKeyDown event was consumed, eKeyPress event
|
|
// won't be dispatched by widget. So, coming eKeyPress event means
|
|
// that the preceding eKeyDown event wasn't consumed in this case.
|
|
else {
|
|
AutoTArray<uint32_t, 10> accessCharCodes;
|
|
keyEvent->GetAccessKeyCandidates(accessCharCodes);
|
|
|
|
if (HandleAccessKey(keyEvent, aPresContext, accessCharCodes)) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// then fall through...
|
|
MOZ_FALLTHROUGH;
|
|
case eKeyDown:
|
|
case eKeyUp:
|
|
{
|
|
nsIContent* content = GetFocusedContent();
|
|
if (content)
|
|
mCurrentTargetContent = content;
|
|
|
|
// NOTE: Don't refer TextComposition::IsComposing() since UI Events
|
|
// defines that KeyboardEvent.isComposing is true when it's
|
|
// dispatched after compositionstart and compositionend.
|
|
// TextComposition::IsComposing() is false even before
|
|
// compositionend if there is no composing string.
|
|
// And also don't expose other document's composition state.
|
|
// A native IME context is typically shared by multiple documents.
|
|
// So, don't use GetTextCompositionFor(nsIWidget*) here.
|
|
RefPtr<TextComposition> composition =
|
|
IMEStateManager::GetTextCompositionFor(aPresContext);
|
|
aEvent->AsKeyboardEvent()->mIsComposing = !!composition;
|
|
|
|
// Widget may need to perform default action for specific keyboard
|
|
// event if it's not consumed. In this case, widget has already marked
|
|
// the event as "waiting reply from remote process". However, we need
|
|
// to reset it if the target (focused content) isn't in a remote process
|
|
// because PresShell needs to check if it's marked as so before
|
|
// dispatching events into the DOM tree.
|
|
if (aEvent->IsWaitingReplyFromRemoteProcess() &&
|
|
!aEvent->PropagationStopped() &&
|
|
!IsRemoteTarget(content)) {
|
|
aEvent->ResetWaitingReplyFromRemoteProcessState();
|
|
}
|
|
}
|
|
break;
|
|
case eWheel:
|
|
case eWheelOperationStart:
|
|
case eWheelOperationEnd:
|
|
{
|
|
NS_ASSERTION(aEvent->IsTrusted(),
|
|
"Untrusted wheel event shouldn't be here");
|
|
|
|
nsIContent* content = GetFocusedContent();
|
|
if (content) {
|
|
mCurrentTargetContent = content;
|
|
}
|
|
|
|
if (aEvent->mMessage != eWheel) {
|
|
break;
|
|
}
|
|
|
|
WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent();
|
|
WheelPrefs::GetInstance()->ApplyUserPrefsToDelta(wheelEvent);
|
|
|
|
// If we won't dispatch a DOM event for this event, nothing to do anymore.
|
|
if (!wheelEvent->IsAllowedToDispatchDOMEvent()) {
|
|
break;
|
|
}
|
|
|
|
// Init lineOrPageDelta values for line scroll events for some devices
|
|
// on some platforms which might dispatch wheel events which don't have
|
|
// lineOrPageDelta values. And also, if delta values are customized by
|
|
// prefs, this recomputes them.
|
|
DeltaAccumulator::GetInstance()->
|
|
InitLineOrPageDelta(aTargetFrame, this, wheelEvent);
|
|
}
|
|
break;
|
|
case eSetSelection:
|
|
IMEStateManager::HandleSelectionEvent(aPresContext, GetFocusedContent(),
|
|
aEvent->AsSelectionEvent());
|
|
break;
|
|
case eContentCommandCut:
|
|
case eContentCommandCopy:
|
|
case eContentCommandPaste:
|
|
case eContentCommandDelete:
|
|
case eContentCommandUndo:
|
|
case eContentCommandRedo:
|
|
case eContentCommandPasteTransferable:
|
|
case eContentCommandLookUpDictionary:
|
|
DoContentCommandEvent(aEvent->AsContentCommandEvent());
|
|
break;
|
|
case eContentCommandScroll:
|
|
DoContentCommandScrollEvent(aEvent->AsContentCommandEvent());
|
|
break;
|
|
case eCompositionStart:
|
|
if (aEvent->IsTrusted()) {
|
|
// If the event is trusted event, set the selected text to data of
|
|
// composition event.
|
|
WidgetCompositionEvent* compositionEvent = aEvent->AsCompositionEvent();
|
|
WidgetQueryContentEvent selectedText(true, eQuerySelectedText,
|
|
compositionEvent->mWidget);
|
|
HandleQueryContentEvent(&selectedText);
|
|
NS_ASSERTION(selectedText.mSucceeded, "Failed to get selected text");
|
|
compositionEvent->mData = selectedText.mReply.mString;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EventStateManager::HandleQueryContentEvent(WidgetQueryContentEvent* aEvent)
|
|
{
|
|
switch (aEvent->mMessage) {
|
|
case eQuerySelectedText:
|
|
case eQueryTextContent:
|
|
case eQueryCaretRect:
|
|
case eQueryTextRect:
|
|
case eQueryEditorRect:
|
|
if (!IsTargetCrossProcess(aEvent)) {
|
|
break;
|
|
}
|
|
// Will not be handled locally, remote the event
|
|
GetCrossProcessTarget()->HandleQueryContentEvent(*aEvent);
|
|
return;
|
|
// Following events have not been supported in e10s mode yet.
|
|
case eQueryContentState:
|
|
case eQuerySelectionAsTransferable:
|
|
case eQueryCharacterAtPoint:
|
|
case eQueryDOMWidgetHittest:
|
|
case eQueryTextRectArray:
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
// If there is an IMEContentObserver, we need to handle QueryContentEvent
|
|
// with it.
|
|
if (mIMEContentObserver) {
|
|
RefPtr<IMEContentObserver> contentObserver = mIMEContentObserver;
|
|
contentObserver->HandleQueryContentEvent(aEvent);
|
|
return;
|
|
}
|
|
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.HandleQueryContentEvent(aEvent);
|
|
}
|
|
|
|
static AccessKeyType
|
|
GetAccessKeyTypeFor(nsISupports* aDocShell)
|
|
{
|
|
nsCOMPtr<nsIDocShellTreeItem> treeItem(do_QueryInterface(aDocShell));
|
|
if (!treeItem) {
|
|
return AccessKeyType::eNone;
|
|
}
|
|
|
|
switch (treeItem->ItemType()) {
|
|
case nsIDocShellTreeItem::typeChrome:
|
|
return AccessKeyType::eChrome;
|
|
case nsIDocShellTreeItem::typeContent:
|
|
return AccessKeyType::eContent;
|
|
default:
|
|
return AccessKeyType::eNone;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
IsAccessKeyTarget(nsIContent* aContent, nsIFrame* aFrame, nsAString& aKey)
|
|
{
|
|
// Use GetAttr because we want Unicode case=insensitive matching
|
|
// XXXbz shouldn't this be case-sensitive, per spec?
|
|
nsString contentKey;
|
|
if (!aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, contentKey) ||
|
|
!contentKey.Equals(aKey, nsCaseInsensitiveStringComparator()))
|
|
return false;
|
|
|
|
nsCOMPtr<nsIDOMXULDocument> xulDoc =
|
|
do_QueryInterface(aContent->OwnerDoc());
|
|
if (!xulDoc && !aContent->IsXULElement())
|
|
return true;
|
|
|
|
// For XUL we do visibility checks.
|
|
if (!aFrame)
|
|
return false;
|
|
|
|
if (aFrame->IsFocusable())
|
|
return true;
|
|
|
|
if (!aFrame->IsVisibleConsideringAncestors())
|
|
return false;
|
|
|
|
// XUL controls can be activated.
|
|
nsCOMPtr<nsIDOMXULControlElement> control(do_QueryInterface(aContent));
|
|
if (control)
|
|
return true;
|
|
|
|
// HTML area, label and legend elements are never focusable, so
|
|
// we need to check for them explicitly before giving up.
|
|
if (aContent->IsAnyOfHTMLElements(nsGkAtoms::area,
|
|
nsGkAtoms::label,
|
|
nsGkAtoms::legend)) {
|
|
return true;
|
|
}
|
|
|
|
// XUL label elements are never focusable, so we need to check for them
|
|
// explicitly before giving up.
|
|
if (aContent->IsXULElement(nsGkAtoms::label)) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
EventStateManager::CheckIfEventMatchesAccessKey(WidgetKeyboardEvent* aEvent,
|
|
nsPresContext* aPresContext)
|
|
{
|
|
AutoTArray<uint32_t, 10> accessCharCodes;
|
|
aEvent->GetAccessKeyCandidates(accessCharCodes);
|
|
return WalkESMTreeToHandleAccessKey(const_cast<WidgetKeyboardEvent*>(aEvent),
|
|
aPresContext, accessCharCodes,
|
|
nullptr, eAccessKeyProcessingNormal,
|
|
false);
|
|
}
|
|
|
|
bool
|
|
EventStateManager::LookForAccessKeyAndExecute(
|
|
nsTArray<uint32_t>& aAccessCharCodes,
|
|
bool aIsTrustedEvent,
|
|
bool aExecute)
|
|
{
|
|
int32_t count, start = -1;
|
|
nsIContent* focusedContent = GetFocusedContent();
|
|
if (focusedContent) {
|
|
start = mAccessKeys.IndexOf(focusedContent);
|
|
if (start == -1 && focusedContent->GetBindingParent())
|
|
start = mAccessKeys.IndexOf(focusedContent->GetBindingParent());
|
|
}
|
|
nsIContent *content;
|
|
nsIFrame *frame;
|
|
int32_t length = mAccessKeys.Count();
|
|
for (uint32_t i = 0; i < aAccessCharCodes.Length(); ++i) {
|
|
uint32_t ch = aAccessCharCodes[i];
|
|
nsAutoString accessKey;
|
|
AppendUCS4ToUTF16(ch, accessKey);
|
|
for (count = 1; count <= length; ++count) {
|
|
content = mAccessKeys[(start + count) % length];
|
|
frame = content->GetPrimaryFrame();
|
|
if (IsAccessKeyTarget(content, frame, accessKey)) {
|
|
if (!aExecute) {
|
|
return true;
|
|
}
|
|
bool shouldActivate = Prefs::KeyCausesActivation();
|
|
while (shouldActivate && ++count <= length) {
|
|
nsIContent *oc = mAccessKeys[(start + count) % length];
|
|
nsIFrame *of = oc->GetPrimaryFrame();
|
|
if (IsAccessKeyTarget(oc, of, accessKey))
|
|
shouldActivate = false;
|
|
}
|
|
|
|
bool focusChanged = false;
|
|
if (shouldActivate) {
|
|
focusChanged = content->PerformAccesskey(shouldActivate, aIsTrustedEvent);
|
|
} else {
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm) {
|
|
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(content);
|
|
fm->SetFocus(element, nsIFocusManager::FLAG_BYKEY);
|
|
focusChanged = true;
|
|
}
|
|
}
|
|
|
|
if (focusChanged && aIsTrustedEvent) {
|
|
// If this is a child process, inform the parent that we want the focus, but
|
|
// pass false since we don't want to change the window order.
|
|
nsIDocShell* docShell = mPresContext->GetDocShell();
|
|
nsCOMPtr<nsITabChild> child =
|
|
docShell ? docShell->GetTabChild() : nullptr;
|
|
if (child) {
|
|
child->SendRequestFocus(false);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// static
|
|
void
|
|
EventStateManager::GetAccessKeyLabelPrefix(Element* aElement, nsAString& aPrefix)
|
|
{
|
|
aPrefix.Truncate();
|
|
nsAutoString separator, modifierText;
|
|
nsContentUtils::GetModifierSeparatorText(separator);
|
|
|
|
AccessKeyType accessKeyType =
|
|
GetAccessKeyTypeFor(aElement->OwnerDoc()->GetDocShell());
|
|
if (accessKeyType == AccessKeyType::eNone) {
|
|
return;
|
|
}
|
|
Modifiers modifiers = WidgetKeyboardEvent::AccessKeyModifiers(accessKeyType);
|
|
if (modifiers == MODIFIER_NONE) {
|
|
return;
|
|
}
|
|
|
|
if (modifiers & MODIFIER_CONTROL) {
|
|
nsContentUtils::GetControlText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
if (modifiers & MODIFIER_META) {
|
|
nsContentUtils::GetMetaText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
if (modifiers & MODIFIER_OS) {
|
|
nsContentUtils::GetOSText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
if (modifiers & MODIFIER_ALT) {
|
|
nsContentUtils::GetAltText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
if (modifiers & MODIFIER_SHIFT) {
|
|
nsContentUtils::GetShiftText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
}
|
|
|
|
struct MOZ_STACK_CLASS AccessKeyInfo
|
|
{
|
|
WidgetKeyboardEvent* event;
|
|
nsTArray<uint32_t>& charCodes;
|
|
|
|
AccessKeyInfo(WidgetKeyboardEvent* aEvent,
|
|
nsTArray<uint32_t>& aCharCodes)
|
|
: event(aEvent)
|
|
, charCodes(aCharCodes)
|
|
{
|
|
}
|
|
};
|
|
|
|
static bool
|
|
HandleAccessKeyInRemoteChild(TabParent* aTabParent, void* aArg)
|
|
{
|
|
AccessKeyInfo* accessKeyInfo = static_cast<AccessKeyInfo*>(aArg);
|
|
|
|
// Only forward accesskeys for the active tab.
|
|
bool active;
|
|
aTabParent->GetDocShellIsActive(&active);
|
|
if (active) {
|
|
// Even if there is no target for the accesskey in this process,
|
|
// the event may match with a content accesskey. If so, the keyboard
|
|
// event should be handled with reply event for preventing double action.
|
|
// (e.g., Alt+Shift+F on Windows may focus a content in remote and open
|
|
// "File" menu.)
|
|
accessKeyInfo->event->StopPropagation();
|
|
accessKeyInfo->event->MarkAsWaitingReplyFromRemoteProcess();
|
|
aTabParent->HandleAccessKey(*accessKeyInfo->event,
|
|
accessKeyInfo->charCodes);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
EventStateManager::WalkESMTreeToHandleAccessKey(
|
|
WidgetKeyboardEvent* aEvent,
|
|
nsPresContext* aPresContext,
|
|
nsTArray<uint32_t>& aAccessCharCodes,
|
|
nsIDocShellTreeItem* aBubbledFrom,
|
|
ProcessingAccessKeyState aAccessKeyState,
|
|
bool aExecute)
|
|
{
|
|
EnsureDocument(mPresContext);
|
|
nsCOMPtr<nsIDocShell> docShell = aPresContext->GetDocShell();
|
|
if (NS_WARN_IF(!docShell) || NS_WARN_IF(!mDocument)) {
|
|
return false;
|
|
}
|
|
AccessKeyType accessKeyType = GetAccessKeyTypeFor(docShell);
|
|
if (accessKeyType == AccessKeyType::eNone) {
|
|
return false;
|
|
}
|
|
// Alt or other accesskey modifier is down, we may need to do an accesskey.
|
|
if (mAccessKeys.Count() > 0 &&
|
|
aEvent->ModifiersMatchWithAccessKey(accessKeyType)) {
|
|
// Someone registered an accesskey. Find and activate it.
|
|
if (LookForAccessKeyAndExecute(aAccessCharCodes,
|
|
aEvent->IsTrusted(), aExecute)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
int32_t childCount;
|
|
docShell->GetChildCount(&childCount);
|
|
for (int32_t counter = 0; counter < childCount; counter++) {
|
|
// Not processing the child which bubbles up the handling
|
|
nsCOMPtr<nsIDocShellTreeItem> subShellItem;
|
|
docShell->GetChildAt(counter, getter_AddRefs(subShellItem));
|
|
if (aAccessKeyState == eAccessKeyProcessingUp &&
|
|
subShellItem == aBubbledFrom) {
|
|
continue;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> subDS = do_QueryInterface(subShellItem);
|
|
if (subDS && IsShellVisible(subDS)) {
|
|
nsCOMPtr<nsIPresShell> subPS = subDS->GetPresShell();
|
|
|
|
// Docshells need not have a presshell (eg. display:none
|
|
// iframes, docshells in transition between documents, etc).
|
|
if (!subPS) {
|
|
// Oh, well. Just move on to the next child
|
|
continue;
|
|
}
|
|
|
|
nsPresContext *subPC = subPS->GetPresContext();
|
|
|
|
EventStateManager* esm =
|
|
static_cast<EventStateManager*>(subPC->EventStateManager());
|
|
|
|
if (esm &&
|
|
esm->WalkESMTreeToHandleAccessKey(aEvent, subPC, aAccessCharCodes,
|
|
nullptr, eAccessKeyProcessingDown,
|
|
aExecute)) {
|
|
return true;
|
|
}
|
|
}
|
|
}// if end . checking all sub docshell ends here.
|
|
|
|
// bubble up the process to the parent docshell if necessary
|
|
if (eAccessKeyProcessingDown != aAccessKeyState) {
|
|
nsCOMPtr<nsIDocShellTreeItem> parentShellItem;
|
|
docShell->GetParent(getter_AddRefs(parentShellItem));
|
|
nsCOMPtr<nsIDocShell> parentDS = do_QueryInterface(parentShellItem);
|
|
if (parentDS) {
|
|
nsCOMPtr<nsIPresShell> parentPS = parentDS->GetPresShell();
|
|
NS_ASSERTION(parentPS, "Our PresShell exists but the parent's does not?");
|
|
|
|
nsPresContext *parentPC = parentPS->GetPresContext();
|
|
NS_ASSERTION(parentPC, "PresShell without PresContext");
|
|
|
|
EventStateManager* esm =
|
|
static_cast<EventStateManager*>(parentPC->EventStateManager());
|
|
if (esm &&
|
|
esm->WalkESMTreeToHandleAccessKey(aEvent, parentPC, aAccessCharCodes,
|
|
docShell, eAccessKeyProcessingDown,
|
|
aExecute)) {
|
|
return true;
|
|
}
|
|
}
|
|
}// if end. bubble up process
|
|
|
|
// If the content access key modifier is pressed, try remote children
|
|
if (aExecute &&
|
|
aEvent->ModifiersMatchWithAccessKey(AccessKeyType::eContent) &&
|
|
mDocument && mDocument->GetWindow()) {
|
|
// If the focus is currently on a node with a TabParent, the key event
|
|
// should've gotten forwarded to the child process and HandleAccessKey
|
|
// called from there.
|
|
if (TabParent::GetFrom(GetFocusedContent())) {
|
|
// If access key may be only in remote contents, this method won't handle
|
|
// access key synchronously. In this case, only reply event should reach
|
|
// here.
|
|
MOZ_ASSERT(aEvent->IsHandledInRemoteProcess() ||
|
|
!aEvent->IsWaitingReplyFromRemoteProcess());
|
|
}
|
|
// If focus is somewhere else, then we need to check the remote children.
|
|
// However, if the event has already been handled in a remote process,
|
|
// then, focus is moved from the remote process after posting the event.
|
|
// In such case, we shouldn't retry to handle access keys in remote
|
|
// processes.
|
|
else if (!aEvent->IsHandledInRemoteProcess()) {
|
|
AccessKeyInfo accessKeyInfo(aEvent, aAccessCharCodes);
|
|
nsContentUtils::CallOnAllRemoteChildren(mDocument->GetWindow(),
|
|
HandleAccessKeyInRemoteChild,
|
|
&accessKeyInfo);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}// end of HandleAccessKey
|
|
|
|
void
|
|
EventStateManager::DispatchCrossProcessEvent(WidgetEvent* aEvent,
|
|
nsFrameLoader* aFrameLoader,
|
|
nsEventStatus *aStatus)
|
|
{
|
|
TabParent* remote = TabParent::GetFrom(aFrameLoader);
|
|
if (!remote) {
|
|
return;
|
|
}
|
|
|
|
switch (aEvent->mClass) {
|
|
case eMouseEventClass: {
|
|
remote->SendRealMouseEvent(*aEvent->AsMouseEvent());
|
|
return;
|
|
}
|
|
case eKeyboardEventClass: {
|
|
remote->SendRealKeyEvent(*aEvent->AsKeyboardEvent());
|
|
return;
|
|
}
|
|
case eWheelEventClass: {
|
|
remote->SendMouseWheelEvent(*aEvent->AsWheelEvent());
|
|
return;
|
|
}
|
|
case eTouchEventClass: {
|
|
// Let the child process synthesize a mouse event if needed, and
|
|
// ensure we don't synthesize one in this process.
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
remote->SendRealTouchEvent(*aEvent->AsTouchEvent());
|
|
return;
|
|
}
|
|
case eDragEventClass: {
|
|
if (remote->Manager()->IsContentParent()) {
|
|
remote->Manager()->AsContentParent()->MaybeInvokeDragSession(remote);
|
|
}
|
|
|
|
nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession();
|
|
uint32_t dropEffect = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
uint32_t action = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
if (dragSession) {
|
|
dragSession->DragEventDispatchedToChildProcess();
|
|
dragSession->GetDragAction(&action);
|
|
nsCOMPtr<nsIDOMDataTransfer> initialDataTransfer;
|
|
dragSession->GetDataTransfer(getter_AddRefs(initialDataTransfer));
|
|
if (initialDataTransfer) {
|
|
initialDataTransfer->GetDropEffectInt(&dropEffect);
|
|
}
|
|
}
|
|
|
|
remote->SendRealDragEvent(*aEvent->AsDragEvent(), action, dropEffect);
|
|
return;
|
|
}
|
|
case ePluginEventClass: {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
remote->SendPluginEvent(*aEvent->AsPluginEvent());
|
|
return;
|
|
}
|
|
default: {
|
|
MOZ_CRASH("Attempt to send non-whitelisted event?");
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
EventStateManager::IsRemoteTarget(nsIContent* target)
|
|
{
|
|
return !!TabParent::GetFrom(target);
|
|
}
|
|
|
|
bool
|
|
EventStateManager::HandleCrossProcessEvent(WidgetEvent* aEvent,
|
|
nsEventStatus *aStatus) {
|
|
if (*aStatus == nsEventStatus_eConsumeNoDefault ||
|
|
!aEvent->CanBeSentToRemoteProcess()) {
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(!aEvent->HasBeenPostedToRemoteProcess(),
|
|
"Why do we need to post same event to remote processes again?");
|
|
|
|
// Collect the remote event targets we're going to forward this
|
|
// event to.
|
|
//
|
|
// NB: the elements of |targets| must be unique, for correctness.
|
|
AutoTArray<nsCOMPtr<nsIContent>, 1> targets;
|
|
if (aEvent->mClass != eTouchEventClass || aEvent->mMessage == eTouchStart) {
|
|
// If this event only has one target, and it's remote, add it to
|
|
// the array.
|
|
nsIFrame* frame =
|
|
aEvent->mMessage == eDragExit ? sLastDragOverFrame.GetFrame() : GetEventTarget();
|
|
nsIContent* target = frame ? frame->GetContent() : nullptr;
|
|
if (IsRemoteTarget(target)) {
|
|
targets.AppendElement(target);
|
|
}
|
|
} else {
|
|
// This is a touch event with possibly multiple touch points.
|
|
// Each touch point may have its own target. So iterate through
|
|
// all of them and collect the unique set of targets for event
|
|
// forwarding.
|
|
//
|
|
// This loop is similar to the one used in
|
|
// PresShell::DispatchTouchEvent().
|
|
const WidgetTouchEvent::TouchArray& touches =
|
|
aEvent->AsTouchEvent()->mTouches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
Touch* touch = touches[i];
|
|
// NB: the |mChanged| check is an optimization, subprocesses can
|
|
// compute this for themselves. If the touch hasn't changed, we
|
|
// may be able to avoid forwarding the event entirely (which is
|
|
// not free).
|
|
if (!touch || !touch->mChanged) {
|
|
continue;
|
|
}
|
|
nsCOMPtr<EventTarget> targetPtr = touch->mTarget;
|
|
if (!targetPtr) {
|
|
continue;
|
|
}
|
|
nsCOMPtr<nsIContent> target = do_QueryInterface(targetPtr);
|
|
if (IsRemoteTarget(target) && !targets.Contains(target)) {
|
|
targets.AppendElement(target);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (targets.Length() == 0) {
|
|
return false;
|
|
}
|
|
|
|
// Look up the frame loader for all the remote targets we found, and
|
|
// then dispatch the event to the remote content they represent.
|
|
for (uint32_t i = 0; i < targets.Length(); ++i) {
|
|
nsIContent* target = targets[i];
|
|
nsCOMPtr<nsIFrameLoaderOwner> loaderOwner = do_QueryInterface(target);
|
|
if (!loaderOwner) {
|
|
continue;
|
|
}
|
|
|
|
RefPtr<nsFrameLoader> frameLoader = loaderOwner->GetFrameLoader();
|
|
if (!frameLoader) {
|
|
continue;
|
|
}
|
|
|
|
uint32_t eventMode;
|
|
frameLoader->GetEventMode(&eventMode);
|
|
if (eventMode == nsIFrameLoader::EVENT_MODE_DONT_FORWARD_TO_CHILD) {
|
|
continue;
|
|
}
|
|
|
|
DispatchCrossProcessEvent(aEvent, frameLoader, aStatus);
|
|
}
|
|
return aEvent->HasBeenPostedToRemoteProcess();
|
|
}
|
|
|
|
//
|
|
// CreateClickHoldTimer
|
|
//
|
|
// Fire off a timer for determining if the user wants click-hold. This timer
|
|
// is a one-shot that will be cancelled when the user moves enough to fire
|
|
// a drag.
|
|
//
|
|
void
|
|
EventStateManager::CreateClickHoldTimer(nsPresContext* inPresContext,
|
|
nsIFrame* inDownFrame,
|
|
WidgetGUIEvent* inMouseDownEvent)
|
|
{
|
|
if (!inMouseDownEvent->IsTrusted() ||
|
|
IsRemoteTarget(mGestureDownContent) ||
|
|
sIsPointerLocked) {
|
|
return;
|
|
}
|
|
|
|
// just to be anal (er, safe)
|
|
if (mClickHoldTimer) {
|
|
mClickHoldTimer->Cancel();
|
|
mClickHoldTimer = nullptr;
|
|
}
|
|
|
|
// if content clicked on has a popup, don't even start the timer
|
|
// since we'll end up conflicting and both will show.
|
|
if (mGestureDownContent) {
|
|
// check for the |popup| attribute
|
|
if (nsContentUtils::HasNonEmptyAttr(mGestureDownContent, kNameSpaceID_None,
|
|
nsGkAtoms::popup))
|
|
return;
|
|
|
|
// check for a <menubutton> like bookmarks
|
|
if (mGestureDownContent->IsXULElement(nsGkAtoms::menubutton))
|
|
return;
|
|
}
|
|
|
|
mClickHoldTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
if (mClickHoldTimer) {
|
|
int32_t clickHoldDelay =
|
|
Preferences::GetInt("ui.click_hold_context_menus.delay", 500);
|
|
mClickHoldTimer->SetTarget(SystemGroup::EventTargetFor(TaskCategory::Other));
|
|
mClickHoldTimer->InitWithNamedFuncCallback(
|
|
sClickHoldCallback,
|
|
this,
|
|
clickHoldDelay,
|
|
nsITimer::TYPE_ONE_SHOT,
|
|
"EventStateManager::CreateClickHoldTimer");
|
|
}
|
|
} // CreateClickHoldTimer
|
|
|
|
//
|
|
// KillClickHoldTimer
|
|
//
|
|
// Stop the timer that would show the context menu dead in its tracks
|
|
//
|
|
void
|
|
EventStateManager::KillClickHoldTimer()
|
|
{
|
|
if (mClickHoldTimer) {
|
|
mClickHoldTimer->Cancel();
|
|
mClickHoldTimer = nullptr;
|
|
}
|
|
}
|
|
|
|
//
|
|
// sClickHoldCallback
|
|
//
|
|
// This fires after the mouse has been down for a certain length of time.
|
|
//
|
|
void
|
|
EventStateManager::sClickHoldCallback(nsITimer* aTimer, void* aESM)
|
|
{
|
|
RefPtr<EventStateManager> self = static_cast<EventStateManager*>(aESM);
|
|
if (self) {
|
|
self->FireContextClick();
|
|
}
|
|
|
|
// NOTE: |aTimer| and |self->mAutoHideTimer| are invalid after calling ClosePopup();
|
|
|
|
} // sAutoHideCallback
|
|
|
|
//
|
|
// FireContextClick
|
|
//
|
|
// If we're this far, our timer has fired, which means the mouse has been down
|
|
// for a certain period of time and has not moved enough to generate a dragGesture.
|
|
// We can be certain the user wants a context-click at this stage, so generate
|
|
// a dom event and fire it in.
|
|
//
|
|
// After the event fires, check if PreventDefault() has been set on the event which
|
|
// means that someone either ate the event or put up a context menu. This is our cue
|
|
// to stop tracking the drag gesture. If we always did this, draggable items w/out
|
|
// a context menu wouldn't be draggable after a certain length of time, which is
|
|
// _not_ what we want.
|
|
//
|
|
void
|
|
EventStateManager::FireContextClick()
|
|
{
|
|
if (!mGestureDownContent || !mPresContext || sIsPointerLocked) {
|
|
return;
|
|
}
|
|
|
|
#ifdef XP_MACOSX
|
|
// Hack to ensure that we don't show a context menu when the user
|
|
// let go of the mouse after a long cpu-hogging operation prevented
|
|
// us from handling any OS events. See bug 117589.
|
|
if (!CGEventSourceButtonState(kCGEventSourceStateCombinedSessionState, kCGMouseButtonLeft))
|
|
return;
|
|
#endif
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
// Dispatch to the DOM. We have to fake out the ESM and tell it that the
|
|
// current target frame is actually where the mouseDown occurred, otherwise it
|
|
// will use the frame the mouse is currently over which may or may not be
|
|
// the same. (Note: saari and I have decided that we don't have to reset |mCurrentTarget|
|
|
// when we're through because no one else is doing anything more with this
|
|
// event and it will get reset on the very next event to the correct frame).
|
|
mCurrentTarget = mPresContext->GetPrimaryFrameFor(mGestureDownContent);
|
|
// make sure the widget sticks around
|
|
nsCOMPtr<nsIWidget> targetWidget;
|
|
if (mCurrentTarget && (targetWidget = mCurrentTarget->GetNearestWidget())) {
|
|
NS_ASSERTION(mPresContext == mCurrentTarget->PresContext(),
|
|
"a prescontext returned a primary frame that didn't belong to it?");
|
|
|
|
// before dispatching, check that we're not on something that
|
|
// doesn't get a context menu
|
|
bool allowedToDispatch = true;
|
|
|
|
if (mGestureDownContent->IsAnyOfXULElements(nsGkAtoms::scrollbar,
|
|
nsGkAtoms::scrollbarbutton,
|
|
nsGkAtoms::button)) {
|
|
allowedToDispatch = false;
|
|
} else if (mGestureDownContent->IsXULElement(nsGkAtoms::toolbarbutton)) {
|
|
// a <toolbarbutton> that has the container attribute set
|
|
// will already have its own dropdown.
|
|
if (nsContentUtils::HasNonEmptyAttr(mGestureDownContent,
|
|
kNameSpaceID_None, nsGkAtoms::container)) {
|
|
allowedToDispatch = false;
|
|
} else {
|
|
// If the toolbar button has an open menu, don't attempt to open
|
|
// a second menu
|
|
if (mGestureDownContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::open,
|
|
nsGkAtoms::_true, eCaseMatters)) {
|
|
allowedToDispatch = false;
|
|
}
|
|
}
|
|
}
|
|
else if (mGestureDownContent->IsHTMLElement()) {
|
|
nsCOMPtr<nsIFormControl> formCtrl(do_QueryInterface(mGestureDownContent));
|
|
|
|
if (formCtrl) {
|
|
allowedToDispatch = formCtrl->IsTextOrNumberControl(/*aExcludePassword*/ false) ||
|
|
formCtrl->ControlType() == NS_FORM_INPUT_FILE;
|
|
}
|
|
else if (mGestureDownContent->IsAnyOfHTMLElements(nsGkAtoms::embed,
|
|
nsGkAtoms::object,
|
|
nsGkAtoms::label)) {
|
|
allowedToDispatch = false;
|
|
}
|
|
}
|
|
|
|
if (allowedToDispatch) {
|
|
// init the event while mCurrentTarget is still good
|
|
WidgetMouseEvent event(true, eContextMenu, targetWidget,
|
|
WidgetMouseEvent::eReal);
|
|
event.mClickCount = 1;
|
|
FillInEventFromGestureDown(&event);
|
|
|
|
// stop selection tracking, we're in control now
|
|
if (mCurrentTarget)
|
|
{
|
|
RefPtr<nsFrameSelection> frameSel =
|
|
mCurrentTarget->GetFrameSelection();
|
|
|
|
if (frameSel && frameSel->GetDragState()) {
|
|
// note that this can cause selection changed events to fire if we're in
|
|
// a text field, which will null out mCurrentTarget
|
|
frameSel->SetDragState(false);
|
|
}
|
|
}
|
|
|
|
nsIDocument* doc = mGestureDownContent->GetComposedDoc();
|
|
AutoHandlingUserInputStatePusher userInpStatePusher(true, &event, doc);
|
|
|
|
// dispatch to DOM
|
|
EventDispatcher::Dispatch(mGestureDownContent, mPresContext, &event,
|
|
nullptr, &status);
|
|
|
|
// We don't need to dispatch to frame handling because no frames
|
|
// watch eContextMenu except for nsMenuFrame and that's only for
|
|
// dismissal. That's just as well since we don't really know
|
|
// which frame to send it to.
|
|
}
|
|
}
|
|
|
|
// now check if the event has been handled. If so, stop tracking a drag
|
|
if (status == nsEventStatus_eConsumeNoDefault) {
|
|
StopTrackingDragGesture();
|
|
}
|
|
|
|
KillClickHoldTimer();
|
|
|
|
} // FireContextClick
|
|
|
|
//
|
|
// BeginTrackingDragGesture
|
|
//
|
|
// Record that the mouse has gone down and that we should move to TRACKING state
|
|
// of d&d gesture tracker.
|
|
//
|
|
// We also use this to track click-hold context menus. When the mouse goes down,
|
|
// fire off a short timer. If the timer goes off and we have yet to fire the
|
|
// drag gesture (ie, the mouse hasn't moved a certain distance), then we can
|
|
// assume the user wants a click-hold, so fire a context-click event. We only
|
|
// want to cancel the drag gesture if the context-click event is handled.
|
|
//
|
|
void
|
|
EventStateManager::BeginTrackingDragGesture(nsPresContext* aPresContext,
|
|
WidgetMouseEvent* inDownEvent,
|
|
nsIFrame* inDownFrame)
|
|
{
|
|
if (!inDownEvent->mWidget) {
|
|
return;
|
|
}
|
|
|
|
// Note that |inDownEvent| could be either a mouse down event or a
|
|
// synthesized mouse move event.
|
|
mGestureDownPoint =
|
|
inDownEvent->mRefPoint + inDownEvent->mWidget->WidgetToScreenOffset();
|
|
|
|
if (inDownFrame) {
|
|
inDownFrame->GetContentForEvent(inDownEvent,
|
|
getter_AddRefs(mGestureDownContent));
|
|
|
|
mGestureDownFrameOwner = inDownFrame->GetContent();
|
|
if (!mGestureDownFrameOwner) {
|
|
mGestureDownFrameOwner = mGestureDownContent;
|
|
}
|
|
}
|
|
mGestureModifiers = inDownEvent->mModifiers;
|
|
mGestureDownButtons = inDownEvent->buttons;
|
|
|
|
if (inDownEvent->mMessage != eMouseTouchDrag && Prefs::ClickHoldContextMenu()) {
|
|
// fire off a timer to track click-hold
|
|
CreateClickHoldTimer(aPresContext, inDownFrame, inDownEvent);
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::BeginTrackingRemoteDragGesture(nsIContent* aContent)
|
|
{
|
|
mGestureDownContent = aContent;
|
|
mGestureDownFrameOwner = aContent;
|
|
}
|
|
|
|
//
|
|
// StopTrackingDragGesture
|
|
//
|
|
// Record that the mouse has gone back up so that we should leave the TRACKING
|
|
// state of d&d gesture tracker and return to the START state.
|
|
//
|
|
void
|
|
EventStateManager::StopTrackingDragGesture()
|
|
{
|
|
mGestureDownContent = nullptr;
|
|
mGestureDownFrameOwner = nullptr;
|
|
}
|
|
|
|
void
|
|
EventStateManager::FillInEventFromGestureDown(WidgetMouseEvent* aEvent)
|
|
{
|
|
NS_ASSERTION(aEvent->mWidget == mCurrentTarget->GetNearestWidget(),
|
|
"Incorrect widget in event");
|
|
|
|
// Set the coordinates in the new event to the coordinates of
|
|
// the old event, adjusted for the fact that the widget might be
|
|
// different
|
|
aEvent->mRefPoint =
|
|
mGestureDownPoint - aEvent->mWidget->WidgetToScreenOffset();
|
|
aEvent->mModifiers = mGestureModifiers;
|
|
aEvent->buttons = mGestureDownButtons;
|
|
}
|
|
|
|
//
|
|
// GenerateDragGesture
|
|
//
|
|
// If we're in the TRACKING state of the d&d gesture tracker, check the current position
|
|
// of the mouse in relation to the old one. If we've moved a sufficient amount from
|
|
// the mouse down, then fire off a drag gesture event.
|
|
void
|
|
EventStateManager::GenerateDragGesture(nsPresContext* aPresContext,
|
|
WidgetInputEvent* aEvent)
|
|
{
|
|
NS_ASSERTION(aPresContext, "This shouldn't happen.");
|
|
if (IsTrackingDragGesture()) {
|
|
mCurrentTarget = mGestureDownFrameOwner->GetPrimaryFrame();
|
|
|
|
if (!mCurrentTarget || !mCurrentTarget->GetNearestWidget()) {
|
|
StopTrackingDragGesture();
|
|
return;
|
|
}
|
|
|
|
// Check if selection is tracking drag gestures, if so
|
|
// don't interfere!
|
|
if (mCurrentTarget)
|
|
{
|
|
RefPtr<nsFrameSelection> frameSel = mCurrentTarget->GetFrameSelection();
|
|
if (frameSel && frameSel->GetDragState()) {
|
|
StopTrackingDragGesture();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// If non-native code is capturing the mouse don't start a drag.
|
|
if (nsIPresShell::IsMouseCapturePreventingDrag()) {
|
|
StopTrackingDragGesture();
|
|
return;
|
|
}
|
|
|
|
static int32_t pixelThresholdX = 0;
|
|
static int32_t pixelThresholdY = 0;
|
|
|
|
if (!pixelThresholdX) {
|
|
pixelThresholdX =
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_DragThresholdX, 0);
|
|
pixelThresholdY =
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_DragThresholdY, 0);
|
|
if (!pixelThresholdX)
|
|
pixelThresholdX = 5;
|
|
if (!pixelThresholdY)
|
|
pixelThresholdY = 5;
|
|
}
|
|
|
|
// fire drag gesture if mouse has moved enough
|
|
LayoutDeviceIntPoint pt = aEvent->mWidget->WidgetToScreenOffset() +
|
|
(aEvent->AsTouchEvent() ? aEvent->AsTouchEvent()->mTouches[0]->mRefPoint
|
|
: aEvent->mRefPoint);
|
|
LayoutDeviceIntPoint distance = pt - mGestureDownPoint;
|
|
if (Abs(distance.x) > AssertedCast<uint32_t>(pixelThresholdX) ||
|
|
Abs(distance.y) > AssertedCast<uint32_t>(pixelThresholdY)) {
|
|
if (Prefs::ClickHoldContextMenu()) {
|
|
// stop the click-hold before we fire off the drag gesture, in case
|
|
// it takes a long time
|
|
KillClickHoldTimer();
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docshell = aPresContext->GetDocShell();
|
|
if (!docshell) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = docshell->GetWindow();
|
|
if (!window)
|
|
return;
|
|
|
|
RefPtr<DataTransfer> dataTransfer =
|
|
new DataTransfer(window, eDragStart, false, -1);
|
|
|
|
nsCOMPtr<nsISelection> selection;
|
|
nsCOMPtr<nsIContent> eventContent, targetContent;
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(eventContent));
|
|
if (eventContent)
|
|
DetermineDragTargetAndDefaultData(window, eventContent, dataTransfer,
|
|
getter_AddRefs(selection),
|
|
getter_AddRefs(targetContent));
|
|
|
|
// Stop tracking the drag gesture now. This should stop us from
|
|
// reentering GenerateDragGesture inside DOM event processing.
|
|
StopTrackingDragGesture();
|
|
|
|
if (!targetContent)
|
|
return;
|
|
|
|
// Use our targetContent, now that we've determined it, as the
|
|
// parent object of the DataTransfer.
|
|
dataTransfer->SetParentObject(targetContent);
|
|
|
|
sLastDragOverFrame = nullptr;
|
|
nsCOMPtr<nsIWidget> widget = mCurrentTarget->GetNearestWidget();
|
|
|
|
// get the widget from the target frame
|
|
WidgetDragEvent startEvent(aEvent->IsTrusted(), eDragStart, widget);
|
|
FillInEventFromGestureDown(&startEvent);
|
|
|
|
startEvent.mDataTransfer = dataTransfer;
|
|
if (aEvent->AsMouseEvent()) {
|
|
startEvent.inputSource = aEvent->AsMouseEvent()->inputSource;
|
|
} else if (aEvent->AsTouchEvent()) {
|
|
startEvent.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
|
|
} else {
|
|
MOZ_ASSERT(false);
|
|
}
|
|
|
|
// Dispatch to the DOM. By setting mCurrentTarget we are faking
|
|
// out the ESM and telling it that the current target frame is
|
|
// actually where the mouseDown occurred, otherwise it will use
|
|
// the frame the mouse is currently over which may or may not be
|
|
// the same. (Note: saari and I have decided that we don't have
|
|
// to reset |mCurrentTarget| when we're through because no one
|
|
// else is doing anything more with this event and it will get
|
|
// reset on the very next event to the correct frame).
|
|
|
|
// Hold onto old target content through the event and reset after.
|
|
nsCOMPtr<nsIContent> targetBeforeEvent = mCurrentTargetContent;
|
|
|
|
// Set the current target to the content for the mouse down
|
|
mCurrentTargetContent = targetContent;
|
|
|
|
// Dispatch the dragstart event to the DOM.
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
EventDispatcher::Dispatch(targetContent, aPresContext, &startEvent,
|
|
nullptr, &status);
|
|
|
|
WidgetDragEvent* event = &startEvent;
|
|
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
// Emit observer event to allow addons to modify the DataTransfer object.
|
|
if (observerService) {
|
|
observerService->NotifyObservers(dataTransfer,
|
|
"on-datatransfer-available",
|
|
nullptr);
|
|
}
|
|
|
|
// now that the dataTransfer has been updated in the dragstart and
|
|
// draggesture events, make it read only so that the data doesn't
|
|
// change during the drag.
|
|
dataTransfer->SetReadOnly();
|
|
|
|
if (status != nsEventStatus_eConsumeNoDefault) {
|
|
bool dragStarted = DoDefaultDragStart(aPresContext, event, dataTransfer,
|
|
targetContent, selection);
|
|
if (dragStarted) {
|
|
sActiveESM = nullptr;
|
|
aEvent->StopPropagation();
|
|
}
|
|
}
|
|
|
|
// Reset mCurretTargetContent to what it was
|
|
mCurrentTargetContent = targetBeforeEvent;
|
|
}
|
|
|
|
// Now flush all pending notifications, for better responsiveness
|
|
// while dragging.
|
|
FlushPendingEvents(aPresContext);
|
|
}
|
|
} // GenerateDragGesture
|
|
|
|
void
|
|
EventStateManager::DetermineDragTargetAndDefaultData(nsPIDOMWindowOuter* aWindow,
|
|
nsIContent* aSelectionTarget,
|
|
DataTransfer* aDataTransfer,
|
|
nsISelection** aSelection,
|
|
nsIContent** aTargetNode)
|
|
{
|
|
*aTargetNode = nullptr;
|
|
|
|
// GetDragData determines if a selection, link or image in the content
|
|
// should be dragged, and places the data associated with the drag in the
|
|
// data transfer.
|
|
// mGestureDownContent is the node where the mousedown event for the drag
|
|
// occurred, and aSelectionTarget is the node to use when a selection is used
|
|
bool canDrag;
|
|
nsCOMPtr<nsIContent> dragDataNode;
|
|
bool wasAlt = (mGestureModifiers & MODIFIER_ALT) != 0;
|
|
nsresult rv = nsContentAreaDragDrop::GetDragData(aWindow, mGestureDownContent,
|
|
aSelectionTarget, wasAlt,
|
|
aDataTransfer, &canDrag, aSelection,
|
|
getter_AddRefs(dragDataNode));
|
|
if (NS_FAILED(rv) || !canDrag)
|
|
return;
|
|
|
|
// if GetDragData returned a node, use that as the node being dragged.
|
|
// Otherwise, if a selection is being dragged, use the node within the
|
|
// selection that was dragged. Otherwise, just use the mousedown target.
|
|
nsIContent* dragContent = mGestureDownContent;
|
|
if (dragDataNode)
|
|
dragContent = dragDataNode;
|
|
else if (*aSelection)
|
|
dragContent = aSelectionTarget;
|
|
|
|
nsIContent* originalDragContent = dragContent;
|
|
|
|
// If a selection isn't being dragged, look for an ancestor with the
|
|
// draggable property set. If one is found, use that as the target of the
|
|
// drag instead of the node that was clicked on. If a draggable node wasn't
|
|
// found, just use the clicked node.
|
|
if (!*aSelection) {
|
|
while (dragContent) {
|
|
nsCOMPtr<nsIDOMHTMLElement> htmlElement = do_QueryInterface(dragContent);
|
|
if (htmlElement) {
|
|
bool draggable = false;
|
|
htmlElement->GetDraggable(&draggable);
|
|
if (draggable)
|
|
break;
|
|
}
|
|
else {
|
|
nsCOMPtr<nsIDOMXULElement> xulElement = do_QueryInterface(dragContent);
|
|
if (xulElement) {
|
|
// All XUL elements are draggable, so if a XUL element is
|
|
// encountered, stop looking for draggable nodes and just use the
|
|
// original clicked node instead.
|
|
// XXXndeakin
|
|
// In the future, we will want to improve this so that XUL has a
|
|
// better way to specify whether something is draggable than just
|
|
// on/off.
|
|
dragContent = mGestureDownContent;
|
|
break;
|
|
}
|
|
// otherwise, it's not an HTML or XUL element, so just keep looking
|
|
}
|
|
dragContent = dragContent->GetParent();
|
|
}
|
|
}
|
|
|
|
// if no node in the hierarchy was found to drag, but the GetDragData method
|
|
// returned a node, use that returned node. Otherwise, nothing is draggable.
|
|
if (!dragContent && dragDataNode)
|
|
dragContent = dragDataNode;
|
|
|
|
if (dragContent) {
|
|
// if an ancestor node was used instead, clear the drag data
|
|
// XXXndeakin rework this a bit. Find a way to just not call GetDragData if we don't need to.
|
|
if (dragContent != originalDragContent)
|
|
aDataTransfer->ClearAll();
|
|
*aTargetNode = dragContent;
|
|
NS_ADDREF(*aTargetNode);
|
|
}
|
|
}
|
|
|
|
bool
|
|
EventStateManager::DoDefaultDragStart(nsPresContext* aPresContext,
|
|
WidgetDragEvent* aDragEvent,
|
|
DataTransfer* aDataTransfer,
|
|
nsIContent* aDragTarget,
|
|
nsISelection* aSelection)
|
|
{
|
|
nsCOMPtr<nsIDragService> dragService =
|
|
do_GetService("@mozilla.org/widget/dragservice;1");
|
|
if (!dragService)
|
|
return false;
|
|
|
|
// Default handling for the dragstart event.
|
|
//
|
|
// First, check if a drag session already exists. This means that the drag
|
|
// service was called directly within a draggesture handler. In this case,
|
|
// don't do anything more, as it is assumed that the handler is managing
|
|
// drag and drop manually. Make sure to return true to indicate that a drag
|
|
// began.
|
|
nsCOMPtr<nsIDragSession> dragSession;
|
|
dragService->GetCurrentSession(getter_AddRefs(dragSession));
|
|
if (dragSession)
|
|
return true;
|
|
|
|
// No drag session is currently active, so check if a handler added
|
|
// any items to be dragged. If not, there isn't anything to drag.
|
|
uint32_t count = 0;
|
|
if (aDataTransfer)
|
|
aDataTransfer->GetMozItemCount(&count);
|
|
if (!count)
|
|
return false;
|
|
|
|
// Get the target being dragged, which may not be the same as the
|
|
// target of the mouse event. If one wasn't set in the
|
|
// aDataTransfer during the event handler, just use the original
|
|
// target instead.
|
|
nsCOMPtr<nsIContent> dragTarget = aDataTransfer->GetDragTarget();
|
|
if (!dragTarget) {
|
|
dragTarget = aDragTarget;
|
|
if (!dragTarget)
|
|
return false;
|
|
}
|
|
|
|
// check which drag effect should initially be used. If the effect was not
|
|
// set, just use all actions, otherwise Windows won't allow a drop.
|
|
uint32_t action;
|
|
aDataTransfer->GetEffectAllowedInt(&action);
|
|
if (action == nsIDragService::DRAGDROP_ACTION_UNINITIALIZED)
|
|
action = nsIDragService::DRAGDROP_ACTION_COPY |
|
|
nsIDragService::DRAGDROP_ACTION_MOVE |
|
|
nsIDragService::DRAGDROP_ACTION_LINK;
|
|
|
|
// get any custom drag image that was set
|
|
int32_t imageX, imageY;
|
|
Element* dragImage = aDataTransfer->GetDragImage(&imageX, &imageY);
|
|
|
|
nsCOMPtr<nsIArray> transArray =
|
|
aDataTransfer->GetTransferables(dragTarget->AsDOMNode());
|
|
if (!transArray)
|
|
return false;
|
|
|
|
// XXXndeakin don't really want to create a new drag DOM event
|
|
// here, but we need something to pass to the InvokeDragSession
|
|
// methods.
|
|
RefPtr<DragEvent> event =
|
|
NS_NewDOMDragEvent(dragTarget, aPresContext, aDragEvent);
|
|
|
|
// Use InvokeDragSessionWithSelection if a selection is being dragged,
|
|
// such that the image can be generated from the selected text. However,
|
|
// use InvokeDragSessionWithImage if a custom image was set or something
|
|
// other than a selection is being dragged.
|
|
if (!dragImage && aSelection) {
|
|
dragService->InvokeDragSessionWithSelection(aSelection, transArray,
|
|
action, event, aDataTransfer);
|
|
}
|
|
else {
|
|
// if dragging within a XUL tree and no custom drag image was
|
|
// set, the region argument to InvokeDragSessionWithImage needs
|
|
// to be set to the area encompassing the selected rows of the
|
|
// tree to ensure that the drag feedback gets clipped to those
|
|
// rows. For other content, region should be null.
|
|
nsCOMPtr<nsIScriptableRegion> region;
|
|
#ifdef MOZ_XUL
|
|
if (dragTarget && !dragImage) {
|
|
if (dragTarget->NodeInfo()->Equals(nsGkAtoms::treechildren,
|
|
kNameSpaceID_XUL)) {
|
|
nsTreeBodyFrame* treeBody =
|
|
do_QueryFrame(dragTarget->GetPrimaryFrame());
|
|
if (treeBody) {
|
|
treeBody->GetSelectionRegion(getter_AddRefs(region));
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
dragService->InvokeDragSessionWithImage(dragTarget->AsDOMNode(), transArray,
|
|
region, action,
|
|
dragImage ? dragImage->AsDOMNode() :
|
|
nullptr,
|
|
imageX, imageY, event,
|
|
aDataTransfer);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::GetContentViewer(nsIContentViewer** aCv)
|
|
{
|
|
*aCv = nullptr;
|
|
|
|
nsPIDOMWindowOuter* window = mDocument->GetWindow();
|
|
if (!window) return NS_ERROR_FAILURE;
|
|
nsCOMPtr<nsPIDOMWindowOuter> rootWindow = window->GetPrivateRoot();
|
|
if (!rootWindow) return NS_ERROR_FAILURE;
|
|
|
|
TabChild* tabChild = TabChild::GetFrom(rootWindow);
|
|
if (!tabChild) {
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (!fm) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<mozIDOMWindowProxy> activeWindow;
|
|
fm->GetActiveWindow(getter_AddRefs(activeWindow));
|
|
if (rootWindow != activeWindow) return NS_OK;
|
|
} else {
|
|
if (!tabChild->ParentIsActive()) return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> contentWindow = nsGlobalWindow::Cast(rootWindow)->GetContent();
|
|
if (!contentWindow) return NS_ERROR_FAILURE;
|
|
|
|
nsIDocument *doc = contentWindow->GetDoc();
|
|
if (!doc) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsISupports> container = doc->GetContainer();
|
|
if (!container) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDocShell> docshell = do_QueryInterface(container);
|
|
docshell->GetContentViewer(aCv);
|
|
if (!*aCv) return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::ChangeTextSize(int32_t change)
|
|
{
|
|
nsCOMPtr<nsIContentViewer> cv;
|
|
nsresult rv = GetContentViewer(getter_AddRefs(cv));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (cv) {
|
|
float textzoom;
|
|
float zoomMin = ((float)Preferences::GetInt("zoom.minPercent", 50)) / 100;
|
|
float zoomMax = ((float)Preferences::GetInt("zoom.maxPercent", 300)) / 100;
|
|
cv->GetTextZoom(&textzoom);
|
|
textzoom += ((float)change) / 10;
|
|
if (textzoom < zoomMin)
|
|
textzoom = zoomMin;
|
|
else if (textzoom > zoomMax)
|
|
textzoom = zoomMax;
|
|
cv->SetTextZoom(textzoom);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::ChangeFullZoom(int32_t change)
|
|
{
|
|
nsCOMPtr<nsIContentViewer> cv;
|
|
nsresult rv = GetContentViewer(getter_AddRefs(cv));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (cv) {
|
|
float fullzoom;
|
|
float zoomMin = ((float)Preferences::GetInt("zoom.minPercent", 50)) / 100;
|
|
float zoomMax = ((float)Preferences::GetInt("zoom.maxPercent", 300)) / 100;
|
|
cv->GetFullZoom(&fullzoom);
|
|
fullzoom += ((float)change) / 10;
|
|
if (fullzoom < zoomMin)
|
|
fullzoom = zoomMin;
|
|
else if (fullzoom > zoomMax)
|
|
fullzoom = zoomMax;
|
|
cv->SetFullZoom(fullzoom);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EventStateManager::DoScrollHistory(int32_t direction)
|
|
{
|
|
nsCOMPtr<nsISupports> pcContainer(mPresContext->GetContainerWeak());
|
|
if (pcContainer) {
|
|
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(pcContainer));
|
|
if (webNav) {
|
|
// positive direction to go back one step, nonpositive to go forward
|
|
if (direction > 0)
|
|
webNav->GoBack();
|
|
else
|
|
webNav->GoForward();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::DoScrollZoom(nsIFrame* aTargetFrame,
|
|
int32_t adjustment)
|
|
{
|
|
// Exclude form controls and content in chrome docshells.
|
|
nsIContent *content = aTargetFrame->GetContent();
|
|
if (content &&
|
|
!content->IsNodeOfType(nsINode::eHTML_FORM_CONTROL) &&
|
|
!nsContentUtils::IsInChromeDocshell(content->OwnerDoc()))
|
|
{
|
|
// positive adjustment to decrease zoom, negative to increase
|
|
int32_t change = (adjustment > 0) ? -1 : 1;
|
|
|
|
EnsureDocument(mPresContext);
|
|
if (Preferences::GetBool("browser.zoom.full") || content->OwnerDoc()->IsSyntheticDocument()) {
|
|
ChangeFullZoom(change);
|
|
} else {
|
|
ChangeTextSize(change);
|
|
}
|
|
nsContentUtils::DispatchChromeEvent(mDocument, static_cast<nsIDocument*>(mDocument),
|
|
NS_LITERAL_STRING("ZoomChangeUsingMouseWheel"),
|
|
true, true);
|
|
}
|
|
}
|
|
|
|
static nsIFrame*
|
|
GetParentFrameToScroll(nsIFrame* aFrame)
|
|
{
|
|
if (!aFrame)
|
|
return nullptr;
|
|
|
|
if (aFrame->StyleDisplay()->mPosition == NS_STYLE_POSITION_FIXED &&
|
|
nsLayoutUtils::IsReallyFixedPos(aFrame))
|
|
return aFrame->PresContext()->GetPresShell()->GetRootScrollFrame();
|
|
|
|
return aFrame->GetParent();
|
|
}
|
|
|
|
/*static*/ bool
|
|
EventStateManager::CanVerticallyScrollFrameWithWheel(nsIFrame* aFrame)
|
|
{
|
|
nsIContent* c = aFrame->GetContent();
|
|
if (!c) {
|
|
return true;
|
|
}
|
|
nsCOMPtr<nsITextControlElement> ctrl =
|
|
do_QueryInterface(c->IsInAnonymousSubtree() ? c->GetBindingParent() : c);
|
|
if (ctrl && ctrl->IsSingleLineTextControl()) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
EventStateManager::DispatchLegacyMouseScrollEvents(nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
MOZ_ASSERT(aEvent);
|
|
MOZ_ASSERT(aStatus);
|
|
|
|
if (!aTargetFrame || *aStatus == nsEventStatus_eConsumeNoDefault) {
|
|
return;
|
|
}
|
|
|
|
// Ignore mouse wheel transaction for computing legacy mouse wheel
|
|
// events' delta value.
|
|
nsIFrame* scrollFrame =
|
|
ComputeScrollTarget(aTargetFrame, aEvent,
|
|
COMPUTE_LEGACY_MOUSE_SCROLL_EVENT_TARGET);
|
|
|
|
nsIScrollableFrame* scrollTarget = do_QueryFrame(scrollFrame);
|
|
nsPresContext* pc =
|
|
scrollFrame ? scrollFrame->PresContext() : aTargetFrame->PresContext();
|
|
|
|
// DOM event's delta vales are computed from CSS pixels.
|
|
nsSize scrollAmount = GetScrollAmount(pc, aEvent, scrollTarget);
|
|
nsIntSize scrollAmountInCSSPixels(
|
|
nsPresContext::AppUnitsToIntCSSPixels(scrollAmount.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(scrollAmount.height));
|
|
|
|
// XXX We don't deal with fractional amount in legacy event, though the
|
|
// default action handler (DoScrollText()) deals with it.
|
|
// If we implemented such strict computation, we would need additional
|
|
// accumulated delta values. It would made the code more complicated.
|
|
// And also it would computes different delta values from older version.
|
|
// It doesn't make sense to implement such code for legacy events and
|
|
// rare cases.
|
|
int32_t scrollDeltaX, scrollDeltaY, pixelDeltaX, pixelDeltaY;
|
|
switch (aEvent->mDeltaMode) {
|
|
case nsIDOMWheelEvent::DOM_DELTA_PAGE:
|
|
scrollDeltaX =
|
|
!aEvent->mLineOrPageDeltaX ? 0 :
|
|
(aEvent->mLineOrPageDeltaX > 0 ? nsIDOMUIEvent::SCROLL_PAGE_DOWN :
|
|
nsIDOMUIEvent::SCROLL_PAGE_UP);
|
|
scrollDeltaY =
|
|
!aEvent->mLineOrPageDeltaY ? 0 :
|
|
(aEvent->mLineOrPageDeltaY > 0 ? nsIDOMUIEvent::SCROLL_PAGE_DOWN :
|
|
nsIDOMUIEvent::SCROLL_PAGE_UP);
|
|
pixelDeltaX = RoundDown(aEvent->mDeltaX * scrollAmountInCSSPixels.width);
|
|
pixelDeltaY = RoundDown(aEvent->mDeltaY * scrollAmountInCSSPixels.height);
|
|
break;
|
|
|
|
case nsIDOMWheelEvent::DOM_DELTA_LINE:
|
|
scrollDeltaX = aEvent->mLineOrPageDeltaX;
|
|
scrollDeltaY = aEvent->mLineOrPageDeltaY;
|
|
pixelDeltaX = RoundDown(aEvent->mDeltaX * scrollAmountInCSSPixels.width);
|
|
pixelDeltaY = RoundDown(aEvent->mDeltaY * scrollAmountInCSSPixels.height);
|
|
break;
|
|
|
|
case nsIDOMWheelEvent::DOM_DELTA_PIXEL:
|
|
scrollDeltaX = aEvent->mLineOrPageDeltaX;
|
|
scrollDeltaY = aEvent->mLineOrPageDeltaY;
|
|
pixelDeltaX = RoundDown(aEvent->mDeltaX);
|
|
pixelDeltaY = RoundDown(aEvent->mDeltaY);
|
|
break;
|
|
|
|
default:
|
|
MOZ_CRASH("Invalid deltaMode value comes");
|
|
}
|
|
|
|
// Send the legacy events in following order:
|
|
// 1. Vertical scroll
|
|
// 2. Vertical pixel scroll (even if #1 isn't consumed)
|
|
// 3. Horizontal scroll (even if #1 and/or #2 are consumed)
|
|
// 4. Horizontal pixel scroll (even if #3 isn't consumed)
|
|
|
|
AutoWeakFrame targetFrame(aTargetFrame);
|
|
|
|
MOZ_ASSERT(*aStatus != nsEventStatus_eConsumeNoDefault &&
|
|
!aEvent->DefaultPrevented(),
|
|
"If you make legacy events dispatched for default prevented wheel "
|
|
"event, you need to initialize stateX and stateY");
|
|
EventState stateX, stateY;
|
|
if (scrollDeltaY) {
|
|
SendLineScrollEvent(aTargetFrame, aEvent, stateY,
|
|
scrollDeltaY, DELTA_DIRECTION_Y);
|
|
if (!targetFrame.IsAlive()) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (pixelDeltaY) {
|
|
SendPixelScrollEvent(aTargetFrame, aEvent, stateY,
|
|
pixelDeltaY, DELTA_DIRECTION_Y);
|
|
if (!targetFrame.IsAlive()) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (scrollDeltaX) {
|
|
SendLineScrollEvent(aTargetFrame, aEvent, stateX,
|
|
scrollDeltaX, DELTA_DIRECTION_X);
|
|
if (!targetFrame.IsAlive()) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (pixelDeltaX) {
|
|
SendPixelScrollEvent(aTargetFrame, aEvent, stateX,
|
|
pixelDeltaX, DELTA_DIRECTION_X);
|
|
if (!targetFrame.IsAlive()) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (stateY.mDefaultPrevented) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
aEvent->PreventDefault(!stateY.mDefaultPreventedByContent);
|
|
}
|
|
|
|
if (stateX.mDefaultPrevented) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
aEvent->PreventDefault(!stateX.mDefaultPreventedByContent);
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::SendLineScrollEvent(nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent,
|
|
EventState& aState,
|
|
int32_t aDelta,
|
|
DeltaDirection aDeltaDirection)
|
|
{
|
|
nsCOMPtr<nsIContent> targetContent = aTargetFrame->GetContent();
|
|
if (!targetContent)
|
|
targetContent = GetFocusedContent();
|
|
if (!targetContent)
|
|
return;
|
|
|
|
while (targetContent->IsNodeOfType(nsINode::eTEXT)) {
|
|
targetContent = targetContent->GetParent();
|
|
}
|
|
|
|
WidgetMouseScrollEvent event(aEvent->IsTrusted(),
|
|
eLegacyMouseLineOrPageScroll, aEvent->mWidget);
|
|
event.mFlags.mDefaultPrevented = aState.mDefaultPrevented;
|
|
event.mFlags.mDefaultPreventedByContent = aState.mDefaultPreventedByContent;
|
|
event.mRefPoint = aEvent->mRefPoint;
|
|
event.mTime = aEvent->mTime;
|
|
event.mTimeStamp = aEvent->mTimeStamp;
|
|
event.mModifiers = aEvent->mModifiers;
|
|
event.buttons = aEvent->buttons;
|
|
event.mIsHorizontal = (aDeltaDirection == DELTA_DIRECTION_X);
|
|
event.mDelta = aDelta;
|
|
event.inputSource = aEvent->inputSource;
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
EventDispatcher::Dispatch(targetContent, aTargetFrame->PresContext(),
|
|
&event, nullptr, &status);
|
|
aState.mDefaultPrevented =
|
|
event.DefaultPrevented() || status == nsEventStatus_eConsumeNoDefault;
|
|
aState.mDefaultPreventedByContent = event.DefaultPreventedByContent();
|
|
}
|
|
|
|
void
|
|
EventStateManager::SendPixelScrollEvent(nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent,
|
|
EventState& aState,
|
|
int32_t aPixelDelta,
|
|
DeltaDirection aDeltaDirection)
|
|
{
|
|
nsCOMPtr<nsIContent> targetContent = aTargetFrame->GetContent();
|
|
if (!targetContent) {
|
|
targetContent = GetFocusedContent();
|
|
if (!targetContent)
|
|
return;
|
|
}
|
|
|
|
while (targetContent->IsNodeOfType(nsINode::eTEXT)) {
|
|
targetContent = targetContent->GetParent();
|
|
}
|
|
|
|
WidgetMouseScrollEvent event(aEvent->IsTrusted(),
|
|
eLegacyMousePixelScroll, aEvent->mWidget);
|
|
event.mFlags.mDefaultPrevented = aState.mDefaultPrevented;
|
|
event.mFlags.mDefaultPreventedByContent = aState.mDefaultPreventedByContent;
|
|
event.mRefPoint = aEvent->mRefPoint;
|
|
event.mTime = aEvent->mTime;
|
|
event.mTimeStamp = aEvent->mTimeStamp;
|
|
event.mModifiers = aEvent->mModifiers;
|
|
event.buttons = aEvent->buttons;
|
|
event.mIsHorizontal = (aDeltaDirection == DELTA_DIRECTION_X);
|
|
event.mDelta = aPixelDelta;
|
|
event.inputSource = aEvent->inputSource;
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
EventDispatcher::Dispatch(targetContent, aTargetFrame->PresContext(),
|
|
&event, nullptr, &status);
|
|
aState.mDefaultPrevented =
|
|
event.DefaultPrevented() || status == nsEventStatus_eConsumeNoDefault;
|
|
aState.mDefaultPreventedByContent = event.DefaultPreventedByContent();
|
|
}
|
|
|
|
nsIFrame*
|
|
EventStateManager::ComputeScrollTarget(nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent,
|
|
ComputeScrollTargetOptions aOptions)
|
|
{
|
|
return ComputeScrollTarget(aTargetFrame, aEvent->mDeltaX, aEvent->mDeltaY,
|
|
aEvent, aOptions);
|
|
}
|
|
|
|
// Overload ComputeScrollTarget method to allow passing "test" dx and dy when looking
|
|
// for which scrollbarmediators to activate when two finger down on trackpad
|
|
// and before any actual motion
|
|
nsIFrame*
|
|
EventStateManager::ComputeScrollTarget(nsIFrame* aTargetFrame,
|
|
double aDirectionX,
|
|
double aDirectionY,
|
|
WidgetWheelEvent* aEvent,
|
|
ComputeScrollTargetOptions aOptions)
|
|
{
|
|
if ((aOptions & INCLUDE_PLUGIN_AS_TARGET) &&
|
|
!WheelPrefs::WheelEventsEnabledOnPlugins()) {
|
|
aOptions = RemovePluginFromTarget(aOptions);
|
|
}
|
|
|
|
if (aOptions & PREFER_MOUSE_WHEEL_TRANSACTION) {
|
|
// If the user recently scrolled with the mousewheel, then they probably
|
|
// want to scroll the same view as before instead of the view under the
|
|
// cursor. WheelTransaction tracks the frame currently being
|
|
// scrolled with the mousewheel. We consider the transaction ended when the
|
|
// mouse moves more than "mousewheel.transaction.ignoremovedelay"
|
|
// milliseconds after the last scroll operation, or any time the mouse moves
|
|
// out of the frame, or when more than "mousewheel.transaction.timeout"
|
|
// milliseconds have passed after the last operation, even if the mouse
|
|
// hasn't moved.
|
|
nsIFrame* lastScrollFrame = WheelTransaction::GetTargetFrame();
|
|
if (lastScrollFrame) {
|
|
if (aOptions & INCLUDE_PLUGIN_AS_TARGET) {
|
|
nsPluginFrame* pluginFrame = do_QueryFrame(lastScrollFrame);
|
|
if (pluginFrame &&
|
|
pluginFrame->WantsToHandleWheelEventAsDefaultAction()) {
|
|
return lastScrollFrame;
|
|
}
|
|
}
|
|
nsIScrollableFrame* scrollableFrame =
|
|
lastScrollFrame->GetScrollTargetFrame();
|
|
if (scrollableFrame) {
|
|
nsIFrame* frameToScroll = do_QueryFrame(scrollableFrame);
|
|
MOZ_ASSERT(frameToScroll);
|
|
return frameToScroll;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If the event doesn't cause scroll actually, we cannot find scroll target
|
|
// because we check if the event can cause scroll actually on each found
|
|
// scrollable frame.
|
|
if (!aDirectionX && !aDirectionY) {
|
|
return nullptr;
|
|
}
|
|
|
|
bool checkIfScrollableX =
|
|
aDirectionX && (aOptions & PREFER_ACTUAL_SCROLLABLE_TARGET_ALONG_X_AXIS);
|
|
bool checkIfScrollableY =
|
|
aDirectionY && (aOptions & PREFER_ACTUAL_SCROLLABLE_TARGET_ALONG_Y_AXIS);
|
|
|
|
nsIFrame* scrollFrame =
|
|
!(aOptions & START_FROM_PARENT) ? aTargetFrame :
|
|
GetParentFrameToScroll(aTargetFrame);
|
|
for (; scrollFrame; scrollFrame = GetParentFrameToScroll(scrollFrame)) {
|
|
// Check whether the frame wants to provide us with a scrollable view.
|
|
nsIScrollableFrame* scrollableFrame = scrollFrame->GetScrollTargetFrame();
|
|
if (!scrollableFrame) {
|
|
// If the frame is a plugin frame, then, the plugin content may handle
|
|
// wheel events. Only when the caller computes the scroll target for
|
|
// default action handling, we should assume the plugin frame as
|
|
// scrollable if the plugin wants to handle wheel events as default
|
|
// action.
|
|
if (aOptions & INCLUDE_PLUGIN_AS_TARGET) {
|
|
nsPluginFrame* pluginFrame = do_QueryFrame(scrollFrame);
|
|
if (pluginFrame &&
|
|
pluginFrame->WantsToHandleWheelEventAsDefaultAction()) {
|
|
return scrollFrame;
|
|
}
|
|
}
|
|
nsMenuPopupFrame* menuPopupFrame = do_QueryFrame(scrollFrame);
|
|
if (menuPopupFrame) {
|
|
return nullptr;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
nsIFrame* frameToScroll = do_QueryFrame(scrollableFrame);
|
|
MOZ_ASSERT(frameToScroll);
|
|
|
|
// Don't scroll vertically by mouse-wheel on a single-line text control.
|
|
if (checkIfScrollableY) {
|
|
if (!CanVerticallyScrollFrameWithWheel(scrollFrame)) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!checkIfScrollableX && !checkIfScrollableY) {
|
|
return frameToScroll;
|
|
}
|
|
|
|
ScrollbarStyles ss = scrollableFrame->GetScrollbarStyles();
|
|
bool hiddenForV = (NS_STYLE_OVERFLOW_HIDDEN == ss.mVertical);
|
|
bool hiddenForH = (NS_STYLE_OVERFLOW_HIDDEN == ss.mHorizontal);
|
|
if ((hiddenForV && hiddenForH) ||
|
|
(checkIfScrollableY && !checkIfScrollableX && hiddenForV) ||
|
|
(checkIfScrollableX && !checkIfScrollableY && hiddenForH)) {
|
|
continue;
|
|
}
|
|
|
|
// For default action, we should climb up the tree if cannot scroll it
|
|
// by the event actually.
|
|
bool canScroll = WheelHandlingUtils::CanScrollOn(scrollableFrame,
|
|
aDirectionX, aDirectionY);
|
|
// Comboboxes need special care.
|
|
nsIComboboxControlFrame* comboBox = do_QueryFrame(scrollFrame);
|
|
if (comboBox) {
|
|
if (comboBox->IsDroppedDown()) {
|
|
// Don't propagate to parent when drop down menu is active.
|
|
return canScroll ? frameToScroll : nullptr;
|
|
}
|
|
// Always propagate when not dropped down (even if focused).
|
|
continue;
|
|
}
|
|
|
|
if (canScroll) {
|
|
return frameToScroll;
|
|
}
|
|
}
|
|
|
|
nsIFrame* newFrame = nsLayoutUtils::GetCrossDocParentFrame(
|
|
aTargetFrame->PresContext()->FrameManager()->GetRootFrame());
|
|
aOptions =
|
|
static_cast<ComputeScrollTargetOptions>(aOptions & ~START_FROM_PARENT);
|
|
return newFrame ? ComputeScrollTarget(newFrame, aEvent, aOptions) : nullptr;
|
|
}
|
|
|
|
nsSize
|
|
EventStateManager::GetScrollAmount(nsPresContext* aPresContext,
|
|
WidgetWheelEvent* aEvent,
|
|
nsIScrollableFrame* aScrollableFrame)
|
|
{
|
|
MOZ_ASSERT(aPresContext);
|
|
MOZ_ASSERT(aEvent);
|
|
|
|
bool isPage = (aEvent->mDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PAGE);
|
|
if (aScrollableFrame) {
|
|
return isPage ? aScrollableFrame->GetPageScrollAmount() :
|
|
aScrollableFrame->GetLineScrollAmount();
|
|
}
|
|
|
|
// If there is no scrollable frame and page scrolling, use view port size.
|
|
if (isPage) {
|
|
return aPresContext->GetVisibleArea().Size();
|
|
}
|
|
|
|
// If there is no scrollable frame, we should use root frame's information.
|
|
nsIFrame* rootFrame = aPresContext->PresShell()->GetRootFrame();
|
|
if (!rootFrame) {
|
|
return nsSize(0, 0);
|
|
}
|
|
RefPtr<nsFontMetrics> fm =
|
|
nsLayoutUtils::GetInflatedFontMetricsForFrame(rootFrame);
|
|
NS_ENSURE_TRUE(fm, nsSize(0, 0));
|
|
return nsSize(fm->AveCharWidth(), fm->MaxHeight());
|
|
}
|
|
|
|
void
|
|
EventStateManager::DoScrollText(nsIScrollableFrame* aScrollableFrame,
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
MOZ_ASSERT(aScrollableFrame);
|
|
MOZ_ASSERT(aEvent);
|
|
|
|
nsIFrame* scrollFrame = do_QueryFrame(aScrollableFrame);
|
|
MOZ_ASSERT(scrollFrame);
|
|
|
|
AutoWeakFrame scrollFrameWeak(scrollFrame);
|
|
if (!WheelTransaction::WillHandleDefaultAction(aEvent, scrollFrameWeak)) {
|
|
return;
|
|
}
|
|
|
|
// Default action's actual scroll amount should be computed from device
|
|
// pixels.
|
|
nsPresContext* pc = scrollFrame->PresContext();
|
|
nsSize scrollAmount = GetScrollAmount(pc, aEvent, aScrollableFrame);
|
|
nsIntSize scrollAmountInDevPixels(
|
|
pc->AppUnitsToDevPixels(scrollAmount.width),
|
|
pc->AppUnitsToDevPixels(scrollAmount.height));
|
|
nsIntPoint actualDevPixelScrollAmount =
|
|
DeltaAccumulator::GetInstance()->
|
|
ComputeScrollAmountForDefaultAction(aEvent, scrollAmountInDevPixels);
|
|
|
|
// Don't scroll around the axis whose overflow style is hidden.
|
|
ScrollbarStyles overflowStyle = aScrollableFrame->GetScrollbarStyles();
|
|
if (overflowStyle.mHorizontal == NS_STYLE_OVERFLOW_HIDDEN) {
|
|
actualDevPixelScrollAmount.x = 0;
|
|
}
|
|
if (overflowStyle.mVertical == NS_STYLE_OVERFLOW_HIDDEN) {
|
|
actualDevPixelScrollAmount.y = 0;
|
|
}
|
|
|
|
nsIScrollbarMediator::ScrollSnapMode snapMode = nsIScrollbarMediator::DISABLE_SNAP;
|
|
nsIAtom* origin = nullptr;
|
|
switch (aEvent->mDeltaMode) {
|
|
case nsIDOMWheelEvent::DOM_DELTA_LINE:
|
|
origin = nsGkAtoms::mouseWheel;
|
|
snapMode = nsIScrollableFrame::ENABLE_SNAP;
|
|
break;
|
|
case nsIDOMWheelEvent::DOM_DELTA_PAGE:
|
|
origin = nsGkAtoms::pages;
|
|
snapMode = nsIScrollableFrame::ENABLE_SNAP;
|
|
break;
|
|
case nsIDOMWheelEvent::DOM_DELTA_PIXEL:
|
|
origin = nsGkAtoms::pixels;
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Invalid deltaMode value comes");
|
|
}
|
|
|
|
// We shouldn't scroll more one page at once except when over one page scroll
|
|
// is allowed for the event.
|
|
nsSize pageSize = aScrollableFrame->GetPageScrollAmount();
|
|
nsIntSize devPixelPageSize(pc->AppUnitsToDevPixels(pageSize.width),
|
|
pc->AppUnitsToDevPixels(pageSize.height));
|
|
if (!WheelPrefs::GetInstance()->IsOverOnePageScrollAllowedX(aEvent) &&
|
|
DeprecatedAbs(actualDevPixelScrollAmount.x) > devPixelPageSize.width) {
|
|
actualDevPixelScrollAmount.x =
|
|
(actualDevPixelScrollAmount.x >= 0) ? devPixelPageSize.width :
|
|
-devPixelPageSize.width;
|
|
}
|
|
|
|
if (!WheelPrefs::GetInstance()->IsOverOnePageScrollAllowedY(aEvent) &&
|
|
DeprecatedAbs(actualDevPixelScrollAmount.y) > devPixelPageSize.height) {
|
|
actualDevPixelScrollAmount.y =
|
|
(actualDevPixelScrollAmount.y >= 0) ? devPixelPageSize.height :
|
|
-devPixelPageSize.height;
|
|
}
|
|
|
|
bool isDeltaModePixel =
|
|
(aEvent->mDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL);
|
|
|
|
nsIScrollableFrame::ScrollMode mode;
|
|
switch (aEvent->mScrollType) {
|
|
case WidgetWheelEvent::SCROLL_DEFAULT:
|
|
if (isDeltaModePixel) {
|
|
mode = nsIScrollableFrame::NORMAL;
|
|
} else if (aEvent->mFlags.mHandledByAPZ) {
|
|
mode = nsIScrollableFrame::SMOOTH_MSD;
|
|
} else {
|
|
mode = nsIScrollableFrame::SMOOTH;
|
|
}
|
|
break;
|
|
case WidgetWheelEvent::SCROLL_SYNCHRONOUSLY:
|
|
mode = nsIScrollableFrame::INSTANT;
|
|
break;
|
|
case WidgetWheelEvent::SCROLL_ASYNCHRONOUSELY:
|
|
mode = nsIScrollableFrame::NORMAL;
|
|
break;
|
|
case WidgetWheelEvent::SCROLL_SMOOTHLY:
|
|
mode = nsIScrollableFrame::SMOOTH;
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Invalid mScrollType value comes");
|
|
}
|
|
|
|
nsIScrollableFrame::ScrollMomentum momentum =
|
|
aEvent->mIsMomentum ? nsIScrollableFrame::SYNTHESIZED_MOMENTUM_EVENT
|
|
: nsIScrollableFrame::NOT_MOMENTUM;
|
|
|
|
nsIntPoint overflow;
|
|
aScrollableFrame->ScrollBy(actualDevPixelScrollAmount,
|
|
nsIScrollableFrame::DEVICE_PIXELS,
|
|
mode, &overflow, origin, momentum, snapMode);
|
|
|
|
if (!scrollFrameWeak.IsAlive()) {
|
|
// If the scroll causes changing the layout, we can think that the event
|
|
// has been completely consumed by the content. Then, users probably don't
|
|
// want additional action.
|
|
aEvent->mOverflowDeltaX = aEvent->mOverflowDeltaY = 0;
|
|
} else if (isDeltaModePixel) {
|
|
aEvent->mOverflowDeltaX = overflow.x;
|
|
aEvent->mOverflowDeltaY = overflow.y;
|
|
} else {
|
|
aEvent->mOverflowDeltaX =
|
|
static_cast<double>(overflow.x) / scrollAmountInDevPixels.width;
|
|
aEvent->mOverflowDeltaY =
|
|
static_cast<double>(overflow.y) / scrollAmountInDevPixels.height;
|
|
}
|
|
|
|
// If CSS overflow properties caused not to scroll, the overflowDelta* values
|
|
// should be same as delta* values since they may be used as gesture event by
|
|
// widget. However, if there is another scrollable element in the ancestor
|
|
// along the axis, probably users don't want the operation to cause
|
|
// additional action such as moving history. In such case, overflowDelta
|
|
// values should stay zero.
|
|
if (scrollFrameWeak.IsAlive()) {
|
|
if (aEvent->mDeltaX &&
|
|
overflowStyle.mHorizontal == NS_STYLE_OVERFLOW_HIDDEN &&
|
|
!ComputeScrollTarget(scrollFrame, aEvent,
|
|
COMPUTE_SCROLLABLE_ANCESTOR_ALONG_X_AXIS)) {
|
|
aEvent->mOverflowDeltaX = aEvent->mDeltaX;
|
|
}
|
|
if (aEvent->mDeltaY &&
|
|
overflowStyle.mVertical == NS_STYLE_OVERFLOW_HIDDEN &&
|
|
!ComputeScrollTarget(scrollFrame, aEvent,
|
|
COMPUTE_SCROLLABLE_ANCESTOR_ALONG_Y_AXIS)) {
|
|
aEvent->mOverflowDeltaY = aEvent->mDeltaY;
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(aEvent->mOverflowDeltaX == 0 ||
|
|
(aEvent->mOverflowDeltaX > 0) == (aEvent->mDeltaX > 0),
|
|
"The sign of mOverflowDeltaX is different from the scroll direction");
|
|
NS_ASSERTION(aEvent->mOverflowDeltaY == 0 ||
|
|
(aEvent->mOverflowDeltaY > 0) == (aEvent->mDeltaY > 0),
|
|
"The sign of mOverflowDeltaY is different from the scroll direction");
|
|
|
|
WheelPrefs::GetInstance()->CancelApplyingUserPrefsFromOverflowDelta(aEvent);
|
|
}
|
|
|
|
void
|
|
EventStateManager::DecideGestureEvent(WidgetGestureNotifyEvent* aEvent,
|
|
nsIFrame* targetFrame)
|
|
{
|
|
|
|
NS_ASSERTION(aEvent->mMessage == eGestureNotify,
|
|
"DecideGestureEvent called with a non-gesture event");
|
|
|
|
/* Check the ancestor tree to decide if any frame is willing* to receive
|
|
* a MozPixelScroll event. If that's the case, the current touch gesture
|
|
* will be used as a pan gesture; otherwise it will be a regular
|
|
* mousedown/mousemove/click event.
|
|
*
|
|
* *willing: determine if it makes sense to pan the element using scroll events:
|
|
* - For web content: if there are any visible scrollbars on the touch point
|
|
* - For XUL: if it's an scrollable element that can currently scroll in some
|
|
* direction.
|
|
*
|
|
* Note: we'll have to one-off various cases to ensure a good usable behavior
|
|
*/
|
|
WidgetGestureNotifyEvent::PanDirection panDirection =
|
|
WidgetGestureNotifyEvent::ePanNone;
|
|
bool displayPanFeedback = false;
|
|
for (nsIFrame* current = targetFrame; current;
|
|
current = nsLayoutUtils::GetCrossDocParentFrame(current)) {
|
|
|
|
// e10s - mark remote content as pannable. This is a work around since
|
|
// we don't have access to remote frame scroll info here. Apz data may
|
|
// assist is solving this.
|
|
if (current && IsRemoteTarget(current->GetContent())) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanBoth;
|
|
// We don't know when we reach bounds, so just disable feedback for now.
|
|
displayPanFeedback = false;
|
|
break;
|
|
}
|
|
|
|
LayoutFrameType currentFrameType = current->Type();
|
|
|
|
// Scrollbars should always be draggable
|
|
if (currentFrameType == LayoutFrameType::Scrollbar) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanNone;
|
|
break;
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
// Special check for trees
|
|
nsTreeBodyFrame* treeFrame = do_QueryFrame(current);
|
|
if (treeFrame) {
|
|
if (treeFrame->GetHorizontalOverflow()) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanHorizontal;
|
|
}
|
|
if (treeFrame->GetVerticalOverflow()) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanVertical;
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
nsIScrollableFrame* scrollableFrame = do_QueryFrame(current);
|
|
if (scrollableFrame) {
|
|
if (current->IsFrameOfType(nsIFrame::eXULBox)) {
|
|
displayPanFeedback = true;
|
|
|
|
nsRect scrollRange = scrollableFrame->GetScrollRange();
|
|
bool canScrollHorizontally = scrollRange.width > 0;
|
|
|
|
if (targetFrame->IsMenuFrame()) {
|
|
// menu frames report horizontal scroll when they have submenus
|
|
// and we don't want that
|
|
canScrollHorizontally = false;
|
|
displayPanFeedback = false;
|
|
}
|
|
|
|
// Vertical panning has priority over horizontal panning, so
|
|
// when vertical movement is possible we can just finish the loop.
|
|
if (scrollRange.height > 0) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanVertical;
|
|
break;
|
|
}
|
|
|
|
if (canScrollHorizontally) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanHorizontal;
|
|
displayPanFeedback = false;
|
|
}
|
|
} else { //Not a XUL box
|
|
uint32_t scrollbarVisibility = scrollableFrame->GetScrollbarVisibility();
|
|
|
|
//Check if we have visible scrollbars
|
|
if (scrollbarVisibility & nsIScrollableFrame::VERTICAL) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanVertical;
|
|
displayPanFeedback = true;
|
|
break;
|
|
}
|
|
|
|
if (scrollbarVisibility & nsIScrollableFrame::HORIZONTAL) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanHorizontal;
|
|
displayPanFeedback = true;
|
|
}
|
|
}
|
|
} //scrollableFrame
|
|
} //ancestor chain
|
|
aEvent->mDisplayPanFeedback = displayPanFeedback;
|
|
aEvent->mPanDirection = panDirection;
|
|
}
|
|
|
|
#ifdef XP_MACOSX
|
|
static bool
|
|
NodeAllowsClickThrough(nsINode* aNode)
|
|
{
|
|
while (aNode) {
|
|
if (aNode->IsXULElement()) {
|
|
mozilla::dom::Element* element = aNode->AsElement();
|
|
static nsIContent::AttrValuesArray strings[] =
|
|
{&nsGkAtoms::always, &nsGkAtoms::never, nullptr};
|
|
switch (element->FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::clickthrough,
|
|
strings, eCaseMatters)) {
|
|
case 0:
|
|
return true;
|
|
case 1:
|
|
return false;
|
|
}
|
|
}
|
|
aNode = nsContentUtils::GetCrossDocParentNode(aNode);
|
|
}
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
void
|
|
EventStateManager::PostHandleKeyboardEvent(WidgetKeyboardEvent* aKeyboardEvent,
|
|
nsIFrame* aTargetFrame,
|
|
nsEventStatus& aStatus)
|
|
{
|
|
if (aStatus == nsEventStatus_eConsumeNoDefault) {
|
|
return;
|
|
}
|
|
|
|
if (!aKeyboardEvent->HasBeenPostedToRemoteProcess()) {
|
|
if (aKeyboardEvent->IsWaitingReplyFromRemoteProcess()) {
|
|
RefPtr<TabParent> remote = aTargetFrame ?
|
|
TabParent::GetFrom(aTargetFrame->GetContent()) : nullptr;
|
|
if (remote && !remote->IsReadyToHandleInputEvents()) {
|
|
// We need to dispatch the event to the browser element again if we were
|
|
// waiting for the key reply but the event wasn't sent to the content
|
|
// process due to the remote browser wasn't ready.
|
|
WidgetKeyboardEvent keyEvent(*aKeyboardEvent);
|
|
aKeyboardEvent->MarkAsHandledInRemoteProcess();
|
|
EventDispatcher::Dispatch(remote->GetOwnerElement(), mPresContext,
|
|
&keyEvent);
|
|
if (keyEvent.DefaultPrevented()) {
|
|
aKeyboardEvent->PreventDefault(!keyEvent.DefaultPreventedByContent());
|
|
aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
// The widget expects a reply for every keyboard event. If the event wasn't
|
|
// dispatched to a content process (non-e10s or no content process
|
|
// running), we need to short-circuit here. Otherwise, we need to wait for
|
|
// the content process to handle the event.
|
|
aKeyboardEvent->mWidget->PostHandleKeyEvent(aKeyboardEvent);
|
|
if (aKeyboardEvent->DefaultPrevented()) {
|
|
aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
// XXX Currently, our automated tests don't support mKeyNameIndex.
|
|
// Therefore, we still need to handle this with keyCode.
|
|
switch(aKeyboardEvent->mKeyCode) {
|
|
case NS_VK_TAB:
|
|
case NS_VK_F6:
|
|
// This is to prevent keyboard scrolling while alt modifier in use.
|
|
if (!aKeyboardEvent->IsAlt()) {
|
|
aStatus = nsEventStatus_eConsumeNoDefault;
|
|
|
|
// Handling the tab event after it was sent to content is bad,
|
|
// because to the FocusManager the remote-browser looks like one
|
|
// element, so we would just move the focus to the next element
|
|
// in chrome, instead of handling it in content.
|
|
if (aKeyboardEvent->HasBeenPostedToRemoteProcess()) {
|
|
break;
|
|
}
|
|
|
|
EnsureDocument(mPresContext);
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && mDocument) {
|
|
// Shift focus forward or back depending on shift key
|
|
bool isDocMove =
|
|
aKeyboardEvent->IsControl() || aKeyboardEvent->mKeyCode == NS_VK_F6;
|
|
uint32_t dir = aKeyboardEvent->IsShift() ?
|
|
(isDocMove ? static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_BACKWARDDOC) :
|
|
static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_BACKWARD)) :
|
|
(isDocMove ? static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_FORWARDDOC) :
|
|
static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_FORWARD));
|
|
nsCOMPtr<nsIDOMElement> result;
|
|
fm->MoveFocus(mDocument->GetWindow(), nullptr, dir,
|
|
nsIFocusManager::FLAG_BYKEY,
|
|
getter_AddRefs(result));
|
|
}
|
|
}
|
|
return;
|
|
case 0:
|
|
// We handle keys with no specific keycode value below.
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
switch(aKeyboardEvent->mKeyNameIndex) {
|
|
case KEY_NAME_INDEX_ZoomIn:
|
|
case KEY_NAME_INDEX_ZoomOut:
|
|
ChangeFullZoom(
|
|
aKeyboardEvent->mKeyNameIndex == KEY_NAME_INDEX_ZoomIn ? 1 : -1);
|
|
aStatus = nsEventStatus_eConsumeNoDefault;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::PostHandleEvent(nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
nsIFrame* aTargetFrame,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
NS_ENSURE_ARG(aPresContext);
|
|
NS_ENSURE_ARG_POINTER(aStatus);
|
|
|
|
mCurrentTarget = aTargetFrame;
|
|
mCurrentTargetContent = nullptr;
|
|
|
|
HandleCrossProcessEvent(aEvent, aStatus);
|
|
// NOTE: the above call may have destroyed aTargetFrame, please use
|
|
// mCurrentTarget henceforth. This is to avoid using it accidentally:
|
|
aTargetFrame = nullptr;
|
|
|
|
// Most of the events we handle below require a frame.
|
|
// Add special cases here.
|
|
if (!mCurrentTarget && aEvent->mMessage != eMouseUp &&
|
|
aEvent->mMessage != eMouseDown) {
|
|
return NS_OK;
|
|
}
|
|
|
|
//Keep the prescontext alive, we might need it after event dispatch
|
|
RefPtr<nsPresContext> presContext = aPresContext;
|
|
nsresult ret = NS_OK;
|
|
|
|
switch (aEvent->mMessage) {
|
|
case eMouseDown:
|
|
{
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
if (mouseEvent->button == WidgetMouseEvent::eLeftButton &&
|
|
!sNormalLMouseEventInProcess) {
|
|
// We got a mouseup event while a mousedown event was being processed.
|
|
// Make sure that the capturing content is cleared.
|
|
nsIPresShell::SetCapturingContent(nullptr, 0);
|
|
break;
|
|
}
|
|
|
|
// For remote content, capture the event in the parent process at the
|
|
// <xul:browser remote> element. This will ensure that subsequent mousemove/mouseup
|
|
// events will continue to be dispatched to this element and therefore forwarded
|
|
// to the child.
|
|
if (aEvent->HasBeenPostedToRemoteProcess() &&
|
|
!nsIPresShell::GetCapturingContent()) {
|
|
nsIContent* content = mCurrentTarget ? mCurrentTarget->GetContent() : nullptr;
|
|
nsIPresShell::SetCapturingContent(content, 0);
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> activeContent;
|
|
// When content calls PreventDefault on pointerdown, we also call
|
|
// PreventDefault on the subsequent mouse events to suppress default
|
|
// behaviors. Normally, aStatus should be nsEventStatus_eConsumeNoDefault
|
|
// when the event is DefaultPrevented but it's reset to
|
|
// nsEventStatus_eIgnore in EventStateManager::PreHandleEvent. So we also
|
|
// check if the event is DefaultPrevented.
|
|
if (nsEventStatus_eConsumeNoDefault != *aStatus &&
|
|
!aEvent->DefaultPrevented()) {
|
|
nsCOMPtr<nsIContent> newFocus;
|
|
bool suppressBlur = false;
|
|
if (mCurrentTarget) {
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(newFocus));
|
|
const nsStyleUserInterface* ui = mCurrentTarget->StyleUserInterface();
|
|
activeContent = mCurrentTarget->GetContent();
|
|
|
|
// In some cases, we do not want to even blur the current focused
|
|
// element. Those cases are:
|
|
// 1. -moz-user-focus CSS property is set to 'ignore';
|
|
// 2. Element with NS_EVENT_STATE_DISABLED
|
|
// (aka :disabled pseudo-class for HTML element);
|
|
// 3. XUL control element has the disabled property set to 'true'.
|
|
//
|
|
// We can't use nsIFrame::IsFocusable() because we want to blur when
|
|
// we click on a visibility: none element.
|
|
// We can't use nsIContent::IsFocusable() because we want to blur when
|
|
// we click on a non-focusable element like a <div>.
|
|
// We have to use |aEvent->mTarget| to not make sure we do not check
|
|
// an anonymous node of the targeted element.
|
|
suppressBlur = (ui->mUserFocus == StyleUserFocus::Ignore);
|
|
|
|
if (!suppressBlur) {
|
|
nsCOMPtr<Element> element = do_QueryInterface(aEvent->mTarget);
|
|
suppressBlur = element &&
|
|
element->State().HasState(NS_EVENT_STATE_DISABLED);
|
|
}
|
|
|
|
if (!suppressBlur) {
|
|
nsCOMPtr<nsIDOMXULControlElement> xulControl =
|
|
do_QueryInterface(aEvent->mTarget);
|
|
if (xulControl) {
|
|
bool disabled;
|
|
xulControl->GetDisabled(&disabled);
|
|
suppressBlur = disabled;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!suppressBlur) {
|
|
suppressBlur = nsContentUtils::IsUserFocusIgnored(activeContent);
|
|
}
|
|
|
|
nsIFrame* currFrame = mCurrentTarget;
|
|
|
|
// When a root content which isn't editable but has an editable HTML
|
|
// <body> element is clicked, we should redirect the focus to the
|
|
// the <body> element. E.g., when an user click bottom of the editor
|
|
// where is outside of the <body> element, the <body> should be focused
|
|
// and the user can edit immediately after that.
|
|
//
|
|
// NOTE: The newFocus isn't editable that also means it's not in
|
|
// designMode. In designMode, all contents are not focusable.
|
|
if (newFocus && !newFocus->IsEditable()) {
|
|
nsIDocument *doc = newFocus->GetComposedDoc();
|
|
if (doc && newFocus == doc->GetRootElement()) {
|
|
nsIContent *bodyContent =
|
|
nsLayoutUtils::GetEditableRootContentByContentEditable(doc);
|
|
if (bodyContent) {
|
|
nsIFrame* bodyFrame = bodyContent->GetPrimaryFrame();
|
|
if (bodyFrame) {
|
|
currFrame = bodyFrame;
|
|
newFocus = bodyContent;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// When the mouse is pressed, the default action is to focus the
|
|
// target. Look for the nearest enclosing focusable frame.
|
|
while (currFrame) {
|
|
// If the mousedown happened inside a popup, don't
|
|
// try to set focus on one of its containing elements
|
|
const nsStyleDisplay* display = currFrame->StyleDisplay();
|
|
if (display->mDisplay == StyleDisplay::MozPopup) {
|
|
newFocus = nullptr;
|
|
break;
|
|
}
|
|
|
|
int32_t tabIndexUnused;
|
|
if (currFrame->IsFocusable(&tabIndexUnused, true)) {
|
|
newFocus = currFrame->GetContent();
|
|
nsCOMPtr<nsIDOMElement> domElement(do_QueryInterface(newFocus));
|
|
if (domElement)
|
|
break;
|
|
}
|
|
currFrame = currFrame->GetParent();
|
|
}
|
|
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm) {
|
|
// if something was found to focus, focus it. Otherwise, if the
|
|
// element that was clicked doesn't have -moz-user-focus: ignore,
|
|
// clear the existing focus. For -moz-user-focus: ignore, the focus
|
|
// is just left as is.
|
|
// Another effect of mouse clicking, handled in nsSelection, is that
|
|
// it should update the caret position to where the mouse was
|
|
// clicked. Because the focus is cleared when clicking on a
|
|
// non-focusable node, the next press of the tab key will cause
|
|
// focus to be shifted from the caret position instead of the root.
|
|
if (newFocus && currFrame) {
|
|
// use the mouse flag and the noscroll flag so that the content
|
|
// doesn't unexpectedly scroll when clicking an element that is
|
|
// only half visible
|
|
uint32_t flags = nsIFocusManager::FLAG_BYMOUSE |
|
|
nsIFocusManager::FLAG_NOSCROLL;
|
|
// If this was a touch-generated event, pass that information:
|
|
if (mouseEvent->inputSource == nsIDOMMouseEvent::MOZ_SOURCE_TOUCH) {
|
|
flags |= nsIFocusManager::FLAG_BYTOUCH;
|
|
}
|
|
nsCOMPtr<nsIDOMElement> newFocusElement = do_QueryInterface(newFocus);
|
|
fm->SetFocus(newFocusElement, flags);
|
|
}
|
|
else if (!suppressBlur) {
|
|
// clear the focus within the frame and then set it as the
|
|
// focused frame
|
|
EnsureDocument(mPresContext);
|
|
if (mDocument) {
|
|
#ifdef XP_MACOSX
|
|
if (!activeContent || !activeContent->IsXULElement())
|
|
#endif
|
|
fm->ClearFocus(mDocument->GetWindow());
|
|
fm->SetFocusedWindow(mDocument->GetWindow());
|
|
}
|
|
}
|
|
}
|
|
|
|
// The rest is left button-specific.
|
|
if (mouseEvent->button != WidgetMouseEvent::eLeftButton) {
|
|
break;
|
|
}
|
|
|
|
if (activeContent) {
|
|
// The nearest enclosing element goes into the
|
|
// :active state. If we fail the QI to DOMElement,
|
|
// then we know we're only a node, and that we need
|
|
// to obtain our parent element and put it into :active
|
|
// instead.
|
|
nsCOMPtr<nsIDOMElement> elt(do_QueryInterface(activeContent));
|
|
if (!elt) {
|
|
nsIContent* par = activeContent->GetParent();
|
|
if (par)
|
|
activeContent = par;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// if we're here, the event handler returned false, so stop
|
|
// any of our own processing of a drag. Workaround for bug 43258.
|
|
StopTrackingDragGesture();
|
|
|
|
// When the event was cancelled, there is currently a chrome document
|
|
// focused and a mousedown just occurred on a content document, ensure
|
|
// that the window that was clicked is focused.
|
|
EnsureDocument(mPresContext);
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (mDocument && fm) {
|
|
nsCOMPtr<mozIDOMWindowProxy> window;
|
|
fm->GetFocusedWindow(getter_AddRefs(window));
|
|
auto* currentWindow = nsPIDOMWindowOuter::From(window);
|
|
if (currentWindow && mDocument->GetWindow() &&
|
|
currentWindow != mDocument->GetWindow() &&
|
|
!nsContentUtils::IsChromeDoc(mDocument)) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> currentTop;
|
|
nsCOMPtr<nsPIDOMWindowOuter> newTop;
|
|
currentTop = currentWindow->GetTop();
|
|
newTop = mDocument->GetWindow()->GetTop();
|
|
nsCOMPtr<nsIDocument> currentDoc = currentWindow->GetExtantDoc();
|
|
if (nsContentUtils::IsChromeDoc(currentDoc) ||
|
|
(currentTop && newTop && currentTop != newTop)) {
|
|
fm->SetFocusedWindow(mDocument->GetWindow());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
SetActiveManager(this, activeContent);
|
|
}
|
|
break;
|
|
case ePointerCancel: {
|
|
if(WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent()) {
|
|
GenerateMouseEnterExit(mouseEvent);
|
|
}
|
|
// After firing the pointercancel event, a user agent must also fire a
|
|
// pointerout event followed by a pointerleave event.
|
|
MOZ_FALLTHROUGH;
|
|
}
|
|
case ePointerUp: {
|
|
WidgetPointerEvent* pointerEvent = aEvent->AsPointerEvent();
|
|
// After UP/Cancel Touch pointers become invalid so we can remove relevant helper from Table
|
|
// Mouse/Pen pointers are valid all the time (not only between down/up)
|
|
if (pointerEvent->inputSource == nsIDOMMouseEvent::MOZ_SOURCE_TOUCH) {
|
|
mPointersEnterLeaveHelper.Remove(pointerEvent->pointerId);
|
|
GenerateMouseEnterExit(pointerEvent);
|
|
}
|
|
break;
|
|
}
|
|
case eMouseUp:
|
|
{
|
|
ClearGlobalActiveContent(this);
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
if (mouseEvent && mouseEvent->IsReal()) {
|
|
if (!mCurrentTarget) {
|
|
GetEventTarget();
|
|
}
|
|
// Make sure to dispatch the click even if there is no frame for
|
|
// the current target element. This is required for Web compatibility.
|
|
ret = CheckForAndDispatchClick(mouseEvent, aStatus);
|
|
}
|
|
|
|
nsIPresShell *shell = presContext->GetPresShell();
|
|
if (shell) {
|
|
RefPtr<nsFrameSelection> frameSelection = shell->FrameSelection();
|
|
frameSelection->SetDragState(false);
|
|
}
|
|
}
|
|
break;
|
|
case eWheelOperationEnd:
|
|
{
|
|
MOZ_ASSERT(aEvent->IsTrusted());
|
|
ScrollbarsForWheel::MayInactivate();
|
|
WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent();
|
|
nsIScrollableFrame* scrollTarget =
|
|
do_QueryFrame(ComputeScrollTarget(mCurrentTarget, wheelEvent,
|
|
COMPUTE_DEFAULT_ACTION_TARGET));
|
|
if (scrollTarget) {
|
|
scrollTarget->ScrollSnap();
|
|
}
|
|
}
|
|
break;
|
|
case eWheel:
|
|
case eWheelOperationStart:
|
|
{
|
|
MOZ_ASSERT(aEvent->IsTrusted());
|
|
|
|
if (*aStatus == nsEventStatus_eConsumeNoDefault) {
|
|
ScrollbarsForWheel::Inactivate();
|
|
break;
|
|
}
|
|
|
|
WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent();
|
|
|
|
// Check if the frame to scroll before checking the default action
|
|
// because if the scroll target is a plugin, the default action should be
|
|
// chosen by the plugin rather than by our prefs.
|
|
nsIFrame* frameToScroll =
|
|
ComputeScrollTarget(mCurrentTarget, wheelEvent,
|
|
COMPUTE_DEFAULT_ACTION_TARGET);
|
|
nsPluginFrame* pluginFrame = do_QueryFrame(frameToScroll);
|
|
|
|
// When APZ is enabled, the actual scroll animation might be handled by
|
|
// the compositor.
|
|
WheelPrefs::Action action;
|
|
if (pluginFrame) {
|
|
MOZ_ASSERT(pluginFrame->WantsToHandleWheelEventAsDefaultAction());
|
|
action = WheelPrefs::ACTION_SEND_TO_PLUGIN;
|
|
} else if (wheelEvent->mFlags.mHandledByAPZ) {
|
|
action = WheelPrefs::ACTION_NONE;
|
|
} else {
|
|
action = WheelPrefs::GetInstance()->ComputeActionFor(wheelEvent);
|
|
}
|
|
switch (action) {
|
|
case WheelPrefs::ACTION_SCROLL: {
|
|
// For scrolling of default action, we should honor the mouse wheel
|
|
// transaction.
|
|
|
|
ScrollbarsForWheel::PrepareToScrollText(this, mCurrentTarget, wheelEvent);
|
|
|
|
if (aEvent->mMessage != eWheel ||
|
|
(!wheelEvent->mDeltaX && !wheelEvent->mDeltaY)) {
|
|
break;
|
|
}
|
|
|
|
nsIScrollableFrame* scrollTarget = do_QueryFrame(frameToScroll);
|
|
ScrollbarsForWheel::SetActiveScrollTarget(scrollTarget);
|
|
|
|
nsIFrame* rootScrollFrame = !mCurrentTarget ? nullptr :
|
|
mCurrentTarget->PresContext()->PresShell()->GetRootScrollFrame();
|
|
nsIScrollableFrame* rootScrollableFrame = nullptr;
|
|
if (rootScrollFrame) {
|
|
rootScrollableFrame = do_QueryFrame(rootScrollFrame);
|
|
}
|
|
if (!scrollTarget || scrollTarget == rootScrollableFrame) {
|
|
wheelEvent->mViewPortIsOverscrolled = true;
|
|
}
|
|
wheelEvent->mOverflowDeltaX = wheelEvent->mDeltaX;
|
|
wheelEvent->mOverflowDeltaY = wheelEvent->mDeltaY;
|
|
WheelPrefs::GetInstance()->
|
|
CancelApplyingUserPrefsFromOverflowDelta(wheelEvent);
|
|
if (scrollTarget) {
|
|
DoScrollText(scrollTarget, wheelEvent);
|
|
} else {
|
|
WheelTransaction::EndTransaction();
|
|
ScrollbarsForWheel::Inactivate();
|
|
}
|
|
break;
|
|
}
|
|
case WheelPrefs::ACTION_HISTORY: {
|
|
// If this event doesn't cause eLegacyMouseLineOrPageScroll event or
|
|
// the direction is oblique, don't perform history back/forward.
|
|
int32_t intDelta = wheelEvent->GetPreferredIntDelta();
|
|
if (!intDelta) {
|
|
break;
|
|
}
|
|
DoScrollHistory(intDelta);
|
|
break;
|
|
}
|
|
case WheelPrefs::ACTION_ZOOM: {
|
|
// If this event doesn't cause eLegacyMouseLineOrPageScroll event or
|
|
// the direction is oblique, don't perform zoom in/out.
|
|
int32_t intDelta = wheelEvent->GetPreferredIntDelta();
|
|
if (!intDelta) {
|
|
break;
|
|
}
|
|
DoScrollZoom(mCurrentTarget, intDelta);
|
|
break;
|
|
}
|
|
case WheelPrefs::ACTION_SEND_TO_PLUGIN:
|
|
MOZ_ASSERT(pluginFrame);
|
|
|
|
if (wheelEvent->mMessage != eWheel ||
|
|
(!wheelEvent->mDeltaX && !wheelEvent->mDeltaY)) {
|
|
break;
|
|
}
|
|
|
|
MOZ_ASSERT(static_cast<void*>(frameToScroll) ==
|
|
static_cast<void*>(pluginFrame));
|
|
if (!WheelTransaction::WillHandleDefaultAction(wheelEvent,
|
|
frameToScroll)) {
|
|
break;
|
|
}
|
|
|
|
pluginFrame->HandleWheelEventAsDefaultAction(wheelEvent);
|
|
break;
|
|
case WheelPrefs::ACTION_NONE:
|
|
default:
|
|
bool allDeltaOverflown = false;
|
|
if (wheelEvent->mFlags.mHandledByAPZ) {
|
|
if (wheelEvent->mCanTriggerSwipe) {
|
|
// For events that can trigger swipes, APZ needs to know whether
|
|
// scrolling is possible in the requested direction. It does this
|
|
// by looking at the scroll overflow values on mCanTriggerSwipe
|
|
// events after they have been processed.
|
|
allDeltaOverflown =
|
|
!ComputeScrollTarget(mCurrentTarget, wheelEvent,
|
|
COMPUTE_DEFAULT_ACTION_TARGET);
|
|
}
|
|
} else {
|
|
// The event was processed neither by APZ nor by us, so all of the
|
|
// delta values must be overflown delta values.
|
|
allDeltaOverflown = true;
|
|
}
|
|
|
|
if (!allDeltaOverflown) {
|
|
break;
|
|
}
|
|
wheelEvent->mOverflowDeltaX = wheelEvent->mDeltaX;
|
|
wheelEvent->mOverflowDeltaY = wheelEvent->mDeltaY;
|
|
WheelPrefs::GetInstance()->
|
|
CancelApplyingUserPrefsFromOverflowDelta(wheelEvent);
|
|
wheelEvent->mViewPortIsOverscrolled = true;
|
|
break;
|
|
}
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
break;
|
|
|
|
case eGestureNotify:
|
|
{
|
|
if (nsEventStatus_eConsumeNoDefault != *aStatus) {
|
|
DecideGestureEvent(aEvent->AsGestureNotifyEvent(), mCurrentTarget);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eDragEnter:
|
|
case eDragOver:
|
|
{
|
|
NS_ASSERTION(aEvent->mClass == eDragEventClass, "Expected a drag event");
|
|
|
|
// Check if the drag is occurring inside a scrollable area. If so, scroll
|
|
// the area when the mouse is near the edges.
|
|
if (mCurrentTarget && aEvent->mMessage == eDragOver) {
|
|
nsIFrame* checkFrame = mCurrentTarget;
|
|
while (checkFrame) {
|
|
nsIScrollableFrame* scrollFrame = do_QueryFrame(checkFrame);
|
|
// Break out so only the innermost scrollframe is scrolled.
|
|
if (scrollFrame && scrollFrame->DragScroll(aEvent)) {
|
|
break;
|
|
}
|
|
checkFrame = checkFrame->GetParent();
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession();
|
|
if (!dragSession)
|
|
break;
|
|
|
|
// Reset the flag.
|
|
dragSession->SetOnlyChromeDrop(false);
|
|
if (mPresContext) {
|
|
EnsureDocument(mPresContext);
|
|
}
|
|
bool isChromeDoc = nsContentUtils::IsChromeDoc(mDocument);
|
|
|
|
// the initial dataTransfer is the one from the dragstart event that
|
|
// was set on the dragSession when the drag began.
|
|
nsCOMPtr<nsIDOMDataTransfer> dataTransfer;
|
|
nsCOMPtr<nsIDOMDataTransfer> initialDataTransfer;
|
|
dragSession->GetDataTransfer(getter_AddRefs(initialDataTransfer));
|
|
|
|
WidgetDragEvent *dragEvent = aEvent->AsDragEvent();
|
|
|
|
// collect any changes to moz cursor settings stored in the event's
|
|
// data transfer.
|
|
UpdateDragDataTransfer(dragEvent);
|
|
|
|
// cancelling a dragenter or dragover event means that a drop should be
|
|
// allowed, so update the dropEffect and the canDrop state to indicate
|
|
// that a drag is allowed. If the event isn't cancelled, a drop won't be
|
|
// allowed. Essentially, to allow a drop somewhere, specify the effects
|
|
// using the effectAllowed and dropEffect properties in a dragenter or
|
|
// dragover event and cancel the event. To not allow a drop somewhere,
|
|
// don't cancel the event or set the effectAllowed or dropEffect to
|
|
// "none". This way, if the event is just ignored, no drop will be
|
|
// allowed.
|
|
uint32_t dropEffect = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
uint32_t action = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
if (nsEventStatus_eConsumeNoDefault == *aStatus) {
|
|
// if the event has a dataTransfer set, use it.
|
|
if (dragEvent->mDataTransfer) {
|
|
// get the dataTransfer and the dropEffect that was set on it
|
|
dataTransfer = do_QueryInterface(dragEvent->mDataTransfer);
|
|
dataTransfer->GetDropEffectInt(&dropEffect);
|
|
}
|
|
else {
|
|
// if dragEvent->mDataTransfer is null, it means that no attempt was
|
|
// made to access the dataTransfer during the event, yet the event
|
|
// was cancelled. Instead, use the initial data transfer available
|
|
// from the drag session. The drop effect would not have been
|
|
// initialized (which is done in DragEvent::GetDataTransfer),
|
|
// so set it from the drag action. We'll still want to filter it
|
|
// based on the effectAllowed below.
|
|
dataTransfer = initialDataTransfer;
|
|
|
|
dragSession->GetDragAction(&action);
|
|
|
|
// filter the drop effect based on the action. Use UNINITIALIZED as
|
|
// any effect is allowed.
|
|
dropEffect = nsContentUtils::FilterDropEffect(action,
|
|
nsIDragService::DRAGDROP_ACTION_UNINITIALIZED);
|
|
}
|
|
|
|
// At this point, if the dataTransfer is null, it means that the
|
|
// drag was originally started by directly calling the drag service.
|
|
// Just assume that all effects are allowed.
|
|
uint32_t effectAllowed = nsIDragService::DRAGDROP_ACTION_UNINITIALIZED;
|
|
if (dataTransfer)
|
|
dataTransfer->GetEffectAllowedInt(&effectAllowed);
|
|
|
|
// set the drag action based on the drop effect and effect allowed.
|
|
// The drop effect field on the drag transfer object specifies the
|
|
// desired current drop effect. However, it cannot be used if the
|
|
// effectAllowed state doesn't include that type of action. If the
|
|
// dropEffect is "none", then the action will be 'none' so a drop will
|
|
// not be allowed.
|
|
if (effectAllowed == nsIDragService::DRAGDROP_ACTION_UNINITIALIZED ||
|
|
dropEffect & effectAllowed)
|
|
action = dropEffect;
|
|
|
|
if (action == nsIDragService::DRAGDROP_ACTION_NONE)
|
|
dropEffect = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
|
|
// inform the drag session that a drop is allowed on this node.
|
|
dragSession->SetDragAction(action);
|
|
dragSession->SetCanDrop(action != nsIDragService::DRAGDROP_ACTION_NONE);
|
|
|
|
// For now, do this only for dragover.
|
|
//XXXsmaug dragenter needs some more work.
|
|
if (aEvent->mMessage == eDragOver && !isChromeDoc) {
|
|
// Someone has called preventDefault(), check whether is was on
|
|
// content or chrome.
|
|
dragSession->SetOnlyChromeDrop(
|
|
!dragEvent->mDefaultPreventedOnContent);
|
|
}
|
|
} else if (aEvent->mMessage == eDragOver && !isChromeDoc) {
|
|
// No one called preventDefault(), so handle drop only in chrome.
|
|
dragSession->SetOnlyChromeDrop(true);
|
|
}
|
|
if (ContentChild* child = ContentChild::GetSingleton()) {
|
|
child->SendUpdateDropEffect(action, dropEffect);
|
|
}
|
|
if (aEvent->HasBeenPostedToRemoteProcess()) {
|
|
dragSession->SetCanDrop(true);
|
|
} else if (initialDataTransfer) {
|
|
// Now set the drop effect in the initial dataTransfer. This ensures
|
|
// that we can get the desired drop effect in the drop event. For events
|
|
// dispatched to content, the content process will take care of setting
|
|
// this.
|
|
initialDataTransfer->SetDropEffectInt(dropEffect);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eDrop:
|
|
{
|
|
sLastDragOverFrame = nullptr;
|
|
ClearGlobalActiveContent(this);
|
|
break;
|
|
}
|
|
case eDragExit:
|
|
// make sure to fire the enter and exit_synth events after the
|
|
// eDragExit event, otherwise we'll clean up too early
|
|
GenerateDragDropEnterExit(presContext, aEvent->AsDragEvent());
|
|
if (ContentChild* child = ContentChild::GetSingleton()) {
|
|
// SendUpdateDropEffect to prevent nsIDragService from waiting for
|
|
// response of forwarded dragexit event.
|
|
child->SendUpdateDropEffect(nsIDragService::DRAGDROP_ACTION_NONE,
|
|
nsIDragService::DRAGDROP_ACTION_NONE);
|
|
}
|
|
break;
|
|
|
|
case eKeyUp:
|
|
break;
|
|
|
|
case eKeyPress:
|
|
{
|
|
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
|
|
PostHandleKeyboardEvent(keyEvent, mCurrentTarget, *aStatus);
|
|
}
|
|
break;
|
|
|
|
case eMouseEnterIntoWidget:
|
|
if (mCurrentTarget) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
SetContentState(targetContent, NS_EVENT_STATE_HOVER);
|
|
}
|
|
break;
|
|
|
|
#ifdef XP_MACOSX
|
|
case eMouseActivate:
|
|
if (mCurrentTarget) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
if (!NodeAllowsClickThrough(targetContent)) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
//Reset target frame to null to avoid mistargeting after reentrant event
|
|
mCurrentTarget = nullptr;
|
|
mCurrentTargetContent = nullptr;
|
|
|
|
return ret;
|
|
}
|
|
|
|
TabParent*
|
|
EventStateManager::GetCrossProcessTarget()
|
|
{
|
|
return IMEStateManager::GetActiveTabParent();
|
|
}
|
|
|
|
bool
|
|
EventStateManager::IsTargetCrossProcess(WidgetGUIEvent* aEvent)
|
|
{
|
|
// Check to see if there is a focused, editable content in chrome,
|
|
// in that case, do not forward IME events to content
|
|
nsIContent *focusedContent = GetFocusedContent();
|
|
if (focusedContent && focusedContent->IsEditable())
|
|
return false;
|
|
return IMEStateManager::GetActiveTabParent() != nullptr;
|
|
}
|
|
|
|
void
|
|
EventStateManager::NotifyDestroyPresContext(nsPresContext* aPresContext)
|
|
{
|
|
IMEStateManager::OnDestroyPresContext(aPresContext);
|
|
if (mHoverContent) {
|
|
// Bug 70855: Presentation is going away, possibly for a reframe.
|
|
// Reset the hover state so that if we're recreating the presentation,
|
|
// we won't have the old hover state still set in the new presentation,
|
|
// as if the new presentation is resized, a new element may be hovered.
|
|
SetContentState(nullptr, NS_EVENT_STATE_HOVER);
|
|
}
|
|
mPointersEnterLeaveHelper.Clear();
|
|
}
|
|
|
|
void
|
|
EventStateManager::SetPresContext(nsPresContext* aPresContext)
|
|
{
|
|
mPresContext = aPresContext;
|
|
}
|
|
|
|
void
|
|
EventStateManager::ClearFrameRefs(nsIFrame* aFrame)
|
|
{
|
|
if (aFrame && aFrame == mCurrentTarget) {
|
|
mCurrentTargetContent = aFrame->GetContent();
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::UpdateCursor(nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
nsIFrame* aTargetFrame,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
if (aTargetFrame && IsRemoteTarget(aTargetFrame->GetContent())) {
|
|
return;
|
|
}
|
|
|
|
int32_t cursor = NS_STYLE_CURSOR_DEFAULT;
|
|
imgIContainer* container = nullptr;
|
|
bool haveHotspot = false;
|
|
float hotspotX = 0.0f, hotspotY = 0.0f;
|
|
|
|
//If cursor is locked just use the locked one
|
|
if (mLockCursor) {
|
|
cursor = mLockCursor;
|
|
}
|
|
//If not locked, look for correct cursor
|
|
else if (aTargetFrame) {
|
|
nsIFrame::Cursor framecursor;
|
|
nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent,
|
|
aTargetFrame);
|
|
// Avoid setting cursor when the mouse is over a windowless pluign.
|
|
if (NS_FAILED(aTargetFrame->GetCursor(pt, framecursor))) {
|
|
if (XRE_IsContentProcess()) {
|
|
mLastFrameConsumedSetCursor = true;
|
|
}
|
|
return;
|
|
}
|
|
// Make sure cursors get reset after the mouse leaves a
|
|
// windowless plugin frame.
|
|
if (mLastFrameConsumedSetCursor) {
|
|
ClearCachedWidgetCursor(aTargetFrame);
|
|
mLastFrameConsumedSetCursor = false;
|
|
}
|
|
// If the current cursor is from the same frame, and it is now
|
|
// loading some new image for the cursor, we should wait for a
|
|
// while rather than taking its fallback cursor directly.
|
|
if (framecursor.mLoading &&
|
|
gLastCursorSourceFrame == aTargetFrame &&
|
|
TimeStamp::NowLoRes() - gLastCursorUpdateTime <
|
|
TimeDuration::FromMilliseconds(kCursorLoadingTimeout)) {
|
|
return;
|
|
}
|
|
cursor = framecursor.mCursor;
|
|
container = framecursor.mContainer;
|
|
haveHotspot = framecursor.mHaveHotspot;
|
|
hotspotX = framecursor.mHotspotX;
|
|
hotspotY = framecursor.mHotspotY;
|
|
}
|
|
|
|
if (nsContentUtils::UseActivityCursor()) {
|
|
// Check whether or not to show the busy cursor
|
|
nsCOMPtr<nsIDocShell> docShell(aPresContext->GetDocShell());
|
|
if (!docShell) return;
|
|
uint32_t busyFlags = nsIDocShell::BUSY_FLAGS_NONE;
|
|
docShell->GetBusyFlags(&busyFlags);
|
|
|
|
// Show busy cursor everywhere before page loads
|
|
// and just replace the arrow cursor after page starts loading
|
|
if (busyFlags & nsIDocShell::BUSY_FLAGS_BUSY &&
|
|
(cursor == NS_STYLE_CURSOR_AUTO || cursor == NS_STYLE_CURSOR_DEFAULT))
|
|
{
|
|
cursor = NS_STYLE_CURSOR_SPINNING;
|
|
container = nullptr;
|
|
}
|
|
}
|
|
|
|
if (aTargetFrame) {
|
|
SetCursor(cursor, container, haveHotspot, hotspotX, hotspotY,
|
|
aTargetFrame->GetNearestWidget(), false);
|
|
gLastCursorSourceFrame = aTargetFrame;
|
|
gLastCursorUpdateTime = TimeStamp::NowLoRes();
|
|
}
|
|
|
|
if (mLockCursor || NS_STYLE_CURSOR_AUTO != cursor) {
|
|
*aStatus = nsEventStatus_eConsumeDoDefault;
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::ClearCachedWidgetCursor(nsIFrame* aTargetFrame)
|
|
{
|
|
if (!aTargetFrame) {
|
|
return;
|
|
}
|
|
nsIWidget* aWidget = aTargetFrame->GetNearestWidget();
|
|
if (!aWidget) {
|
|
return;
|
|
}
|
|
aWidget->ClearCachedCursor();
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::SetCursor(int32_t aCursor, imgIContainer* aContainer,
|
|
bool aHaveHotspot,
|
|
float aHotspotX, float aHotspotY,
|
|
nsIWidget* aWidget, bool aLockCursor)
|
|
{
|
|
EnsureDocument(mPresContext);
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_FAILURE);
|
|
sMouseOverDocument = mDocument.get();
|
|
|
|
nsCursor c;
|
|
|
|
NS_ENSURE_TRUE(aWidget, NS_ERROR_FAILURE);
|
|
if (aLockCursor) {
|
|
if (NS_STYLE_CURSOR_AUTO != aCursor) {
|
|
mLockCursor = aCursor;
|
|
}
|
|
else {
|
|
//If cursor style is set to auto we unlock the cursor again.
|
|
mLockCursor = 0;
|
|
}
|
|
}
|
|
switch (aCursor) {
|
|
default:
|
|
case NS_STYLE_CURSOR_AUTO:
|
|
case NS_STYLE_CURSOR_DEFAULT:
|
|
c = eCursor_standard;
|
|
break;
|
|
case NS_STYLE_CURSOR_POINTER:
|
|
c = eCursor_hyperlink;
|
|
break;
|
|
case NS_STYLE_CURSOR_CROSSHAIR:
|
|
c = eCursor_crosshair;
|
|
break;
|
|
case NS_STYLE_CURSOR_MOVE:
|
|
c = eCursor_move;
|
|
break;
|
|
case NS_STYLE_CURSOR_TEXT:
|
|
c = eCursor_select;
|
|
break;
|
|
case NS_STYLE_CURSOR_WAIT:
|
|
c = eCursor_wait;
|
|
break;
|
|
case NS_STYLE_CURSOR_HELP:
|
|
c = eCursor_help;
|
|
break;
|
|
case NS_STYLE_CURSOR_N_RESIZE:
|
|
c = eCursor_n_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_S_RESIZE:
|
|
c = eCursor_s_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_W_RESIZE:
|
|
c = eCursor_w_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_E_RESIZE:
|
|
c = eCursor_e_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NW_RESIZE:
|
|
c = eCursor_nw_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_SE_RESIZE:
|
|
c = eCursor_se_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NE_RESIZE:
|
|
c = eCursor_ne_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_SW_RESIZE:
|
|
c = eCursor_sw_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_COPY: // CSS3
|
|
c = eCursor_copy;
|
|
break;
|
|
case NS_STYLE_CURSOR_ALIAS:
|
|
c = eCursor_alias;
|
|
break;
|
|
case NS_STYLE_CURSOR_CONTEXT_MENU:
|
|
c = eCursor_context_menu;
|
|
break;
|
|
case NS_STYLE_CURSOR_CELL:
|
|
c = eCursor_cell;
|
|
break;
|
|
case NS_STYLE_CURSOR_GRAB:
|
|
c = eCursor_grab;
|
|
break;
|
|
case NS_STYLE_CURSOR_GRABBING:
|
|
c = eCursor_grabbing;
|
|
break;
|
|
case NS_STYLE_CURSOR_SPINNING:
|
|
c = eCursor_spinning;
|
|
break;
|
|
case NS_STYLE_CURSOR_ZOOM_IN:
|
|
c = eCursor_zoom_in;
|
|
break;
|
|
case NS_STYLE_CURSOR_ZOOM_OUT:
|
|
c = eCursor_zoom_out;
|
|
break;
|
|
case NS_STYLE_CURSOR_NOT_ALLOWED:
|
|
c = eCursor_not_allowed;
|
|
break;
|
|
case NS_STYLE_CURSOR_COL_RESIZE:
|
|
c = eCursor_col_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_ROW_RESIZE:
|
|
c = eCursor_row_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NO_DROP:
|
|
c = eCursor_no_drop;
|
|
break;
|
|
case NS_STYLE_CURSOR_VERTICAL_TEXT:
|
|
c = eCursor_vertical_text;
|
|
break;
|
|
case NS_STYLE_CURSOR_ALL_SCROLL:
|
|
c = eCursor_all_scroll;
|
|
break;
|
|
case NS_STYLE_CURSOR_NESW_RESIZE:
|
|
c = eCursor_nesw_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NWSE_RESIZE:
|
|
c = eCursor_nwse_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NS_RESIZE:
|
|
c = eCursor_ns_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_EW_RESIZE:
|
|
c = eCursor_ew_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NONE:
|
|
c = eCursor_none;
|
|
break;
|
|
}
|
|
|
|
// First, try the imgIContainer, if non-null
|
|
nsresult rv = NS_ERROR_FAILURE;
|
|
if (aContainer) {
|
|
uint32_t hotspotX, hotspotY;
|
|
|
|
// css3-ui says to use the CSS-specified hotspot if present,
|
|
// otherwise use the intrinsic hotspot, otherwise use the top left
|
|
// corner.
|
|
if (aHaveHotspot) {
|
|
int32_t imgWidth, imgHeight;
|
|
aContainer->GetWidth(&imgWidth);
|
|
aContainer->GetHeight(&imgHeight);
|
|
|
|
// XXX std::max(NS_lround(x), 0)?
|
|
hotspotX = aHotspotX > 0.0f
|
|
? uint32_t(aHotspotX + 0.5f) : uint32_t(0);
|
|
if (hotspotX >= uint32_t(imgWidth))
|
|
hotspotX = imgWidth - 1;
|
|
hotspotY = aHotspotY > 0.0f
|
|
? uint32_t(aHotspotY + 0.5f) : uint32_t(0);
|
|
if (hotspotY >= uint32_t(imgHeight))
|
|
hotspotY = imgHeight - 1;
|
|
} else {
|
|
hotspotX = 0;
|
|
hotspotY = 0;
|
|
nsCOMPtr<nsIProperties> props(do_QueryInterface(aContainer));
|
|
if (props) {
|
|
nsCOMPtr<nsISupportsPRUint32> hotspotXWrap, hotspotYWrap;
|
|
|
|
props->Get("hotspotX", NS_GET_IID(nsISupportsPRUint32), getter_AddRefs(hotspotXWrap));
|
|
props->Get("hotspotY", NS_GET_IID(nsISupportsPRUint32), getter_AddRefs(hotspotYWrap));
|
|
|
|
if (hotspotXWrap)
|
|
hotspotXWrap->GetData(&hotspotX);
|
|
if (hotspotYWrap)
|
|
hotspotYWrap->GetData(&hotspotY);
|
|
}
|
|
}
|
|
|
|
rv = aWidget->SetCursor(aContainer, hotspotX, hotspotY);
|
|
}
|
|
|
|
if (NS_FAILED(rv))
|
|
aWidget->SetCursor(c);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
class MOZ_STACK_CLASS ESMEventCB : public EventDispatchingCallback
|
|
{
|
|
public:
|
|
explicit ESMEventCB(nsIContent* aTarget) : mTarget(aTarget) {}
|
|
|
|
void HandleEvent(EventChainPostVisitor& aVisitor) override
|
|
{
|
|
if (aVisitor.mPresContext) {
|
|
nsIFrame* frame = aVisitor.mPresContext->GetPrimaryFrameFor(mTarget);
|
|
if (frame) {
|
|
frame->HandleEvent(aVisitor.mPresContext,
|
|
aVisitor.mEvent->AsGUIEvent(),
|
|
&aVisitor.mEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> mTarget;
|
|
};
|
|
|
|
/*static*/ bool
|
|
EventStateManager::IsHandlingUserInput()
|
|
{
|
|
return sUserInputEventDepth > 0;
|
|
}
|
|
|
|
static void
|
|
CreateMouseOrPointerWidgetEvent(WidgetMouseEvent* aMouseEvent,
|
|
EventMessage aMessage,
|
|
nsIContent* aRelatedContent,
|
|
nsAutoPtr<WidgetMouseEvent>& aNewEvent)
|
|
{
|
|
WidgetPointerEvent* sourcePointer = aMouseEvent->AsPointerEvent();
|
|
if (sourcePointer) {
|
|
AUTO_PROFILER_LABEL("CreateMouseOrPointerWidgetEvent", EVENTS);
|
|
|
|
nsAutoPtr<WidgetPointerEvent> newPointerEvent;
|
|
newPointerEvent =
|
|
new WidgetPointerEvent(aMouseEvent->IsTrusted(), aMessage,
|
|
aMouseEvent->mWidget);
|
|
newPointerEvent->mIsPrimary = sourcePointer->mIsPrimary;
|
|
newPointerEvent->mWidth = sourcePointer->mWidth;
|
|
newPointerEvent->mHeight = sourcePointer->mHeight;
|
|
newPointerEvent->inputSource = sourcePointer->inputSource;
|
|
newPointerEvent->relatedTarget = aRelatedContent;
|
|
aNewEvent = newPointerEvent.forget();
|
|
} else {
|
|
aNewEvent =
|
|
new WidgetMouseEvent(aMouseEvent->IsTrusted(), aMessage,
|
|
aMouseEvent->mWidget, WidgetMouseEvent::eReal);
|
|
aNewEvent->relatedTarget = aRelatedContent;
|
|
}
|
|
aNewEvent->mRefPoint = aMouseEvent->mRefPoint;
|
|
aNewEvent->mModifiers = aMouseEvent->mModifiers;
|
|
aNewEvent->button = aMouseEvent->button;
|
|
aNewEvent->buttons = aMouseEvent->buttons;
|
|
aNewEvent->pressure = aMouseEvent->pressure;
|
|
aNewEvent->mPluginEvent = aMouseEvent->mPluginEvent;
|
|
aNewEvent->inputSource = aMouseEvent->inputSource;
|
|
aNewEvent->pointerId = aMouseEvent->pointerId;
|
|
}
|
|
|
|
nsIFrame*
|
|
EventStateManager::DispatchMouseOrPointerEvent(WidgetMouseEvent* aMouseEvent,
|
|
EventMessage aMessage,
|
|
nsIContent* aTargetContent,
|
|
nsIContent* aRelatedContent)
|
|
{
|
|
// http://dvcs.w3.org/hg/webevents/raw-file/default/mouse-lock.html#methods
|
|
// "[When the mouse is locked on an element...e]vents that require the concept
|
|
// of a mouse cursor must not be dispatched (for example: mouseover, mouseout).
|
|
if (sIsPointerLocked &&
|
|
(aMessage == eMouseLeave ||
|
|
aMessage == eMouseEnter ||
|
|
aMessage == eMouseOver ||
|
|
aMessage == eMouseOut)) {
|
|
mCurrentTargetContent = nullptr;
|
|
nsCOMPtr<Element> pointerLockedElement =
|
|
do_QueryReferent(EventStateManager::sPointerLockedElement);
|
|
if (!pointerLockedElement) {
|
|
NS_WARNING("Should have pointer locked element, but didn't.");
|
|
return nullptr;
|
|
}
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(pointerLockedElement);
|
|
return mPresContext->GetPrimaryFrameFor(content);
|
|
}
|
|
|
|
mCurrentTargetContent = nullptr;
|
|
|
|
if (!aTargetContent) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsAutoPtr<WidgetMouseEvent> dispatchEvent;
|
|
CreateMouseOrPointerWidgetEvent(aMouseEvent, aMessage,
|
|
aRelatedContent, dispatchEvent);
|
|
|
|
AutoWeakFrame previousTarget = mCurrentTarget;
|
|
mCurrentTargetContent = aTargetContent;
|
|
|
|
nsIFrame* targetFrame = nullptr;
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
ESMEventCB callback(aTargetContent);
|
|
EventDispatcher::Dispatch(aTargetContent, mPresContext, dispatchEvent, nullptr,
|
|
&status, &callback);
|
|
|
|
if (mPresContext) {
|
|
// Although the primary frame was checked in event callback, it may not be
|
|
// the same object after event dispatch and handling, so refetch it.
|
|
targetFrame = mPresContext->GetPrimaryFrameFor(aTargetContent);
|
|
|
|
// If we are entering/leaving remote content, dispatch a mouse enter/exit
|
|
// event to the remote frame.
|
|
if (IsRemoteTarget(aTargetContent)) {
|
|
if (aMessage == eMouseOut) {
|
|
// For remote content, send a "top-level" widget mouse exit event.
|
|
nsAutoPtr<WidgetMouseEvent> remoteEvent;
|
|
CreateMouseOrPointerWidgetEvent(aMouseEvent, eMouseExitFromWidget,
|
|
aRelatedContent, remoteEvent);
|
|
remoteEvent->mExitFrom = WidgetMouseEvent::eTopLevel;
|
|
|
|
// mCurrentTarget is set to the new target, so we must reset it to the
|
|
// old target and then dispatch a cross-process event. (mCurrentTarget
|
|
// will be set back below.) HandleCrossProcessEvent will query for the
|
|
// proper target via GetEventTarget which will return mCurrentTarget.
|
|
mCurrentTarget = targetFrame;
|
|
HandleCrossProcessEvent(remoteEvent, &status);
|
|
} else if (aMessage == eMouseOver) {
|
|
nsAutoPtr<WidgetMouseEvent> remoteEvent;
|
|
CreateMouseOrPointerWidgetEvent(aMouseEvent, eMouseEnterIntoWidget,
|
|
aRelatedContent, remoteEvent);
|
|
HandleCrossProcessEvent(remoteEvent, &status);
|
|
}
|
|
}
|
|
}
|
|
|
|
mCurrentTargetContent = nullptr;
|
|
mCurrentTarget = previousTarget;
|
|
|
|
return targetFrame;
|
|
}
|
|
|
|
class EnterLeaveDispatcher
|
|
{
|
|
public:
|
|
EnterLeaveDispatcher(EventStateManager* aESM,
|
|
nsIContent* aTarget, nsIContent* aRelatedTarget,
|
|
WidgetMouseEvent* aMouseEvent,
|
|
EventMessage aEventMessage)
|
|
: mESM(aESM)
|
|
, mMouseEvent(aMouseEvent)
|
|
, mEventMessage(aEventMessage)
|
|
{
|
|
nsPIDOMWindowInner* win =
|
|
aTarget ? aTarget->OwnerDoc()->GetInnerWindow() : nullptr;
|
|
if (aMouseEvent->AsPointerEvent() ? win && win->HasPointerEnterLeaveEventListeners() :
|
|
win && win->HasMouseEnterLeaveEventListeners()) {
|
|
mRelatedTarget = aRelatedTarget ?
|
|
aRelatedTarget->FindFirstNonChromeOnlyAccessContent() : nullptr;
|
|
nsINode* commonParent = nullptr;
|
|
if (aTarget && aRelatedTarget) {
|
|
commonParent =
|
|
nsContentUtils::GetCommonAncestor(aTarget, aRelatedTarget);
|
|
}
|
|
nsIContent* current = aTarget;
|
|
// Note, it is ok if commonParent is null!
|
|
while (current && current != commonParent) {
|
|
if (!current->ChromeOnlyAccess()) {
|
|
mTargets.AppendObject(current);
|
|
}
|
|
// mouseenter/leave is fired only on elements.
|
|
current = current->GetParent();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Dispatch()
|
|
{
|
|
if (mEventMessage == eMouseEnter || mEventMessage == ePointerEnter) {
|
|
for (int32_t i = mTargets.Count() - 1; i >= 0; --i) {
|
|
mESM->DispatchMouseOrPointerEvent(mMouseEvent, mEventMessage,
|
|
mTargets[i], mRelatedTarget);
|
|
}
|
|
} else {
|
|
for (int32_t i = 0; i < mTargets.Count(); ++i) {
|
|
mESM->DispatchMouseOrPointerEvent(mMouseEvent, mEventMessage,
|
|
mTargets[i], mRelatedTarget);
|
|
}
|
|
}
|
|
}
|
|
|
|
EventStateManager* mESM;
|
|
nsCOMArray<nsIContent> mTargets;
|
|
nsCOMPtr<nsIContent> mRelatedTarget;
|
|
WidgetMouseEvent* mMouseEvent;
|
|
EventMessage mEventMessage;
|
|
};
|
|
|
|
void
|
|
EventStateManager::NotifyMouseOut(WidgetMouseEvent* aMouseEvent,
|
|
nsIContent* aMovingInto)
|
|
{
|
|
RefPtr<OverOutElementsWrapper> wrapper = GetWrapperByEventID(aMouseEvent);
|
|
|
|
if (!wrapper || !wrapper->mLastOverElement)
|
|
return;
|
|
// Before firing mouseout, check for recursion
|
|
if (wrapper->mLastOverElement == wrapper->mFirstOutEventElement)
|
|
return;
|
|
|
|
if (wrapper->mLastOverFrame) {
|
|
// if the frame is associated with a subdocument,
|
|
// tell the subdocument that we're moving out of it
|
|
nsSubDocumentFrame* subdocFrame = do_QueryFrame(wrapper->mLastOverFrame.GetFrame());
|
|
if (subdocFrame) {
|
|
nsCOMPtr<nsIDocShell> docshell;
|
|
subdocFrame->GetDocShell(getter_AddRefs(docshell));
|
|
if (docshell) {
|
|
RefPtr<nsPresContext> presContext;
|
|
docshell->GetPresContext(getter_AddRefs(presContext));
|
|
|
|
if (presContext) {
|
|
EventStateManager* kidESM = presContext->EventStateManager();
|
|
// Not moving into any element in this subdocument
|
|
kidESM->NotifyMouseOut(aMouseEvent, nullptr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// That could have caused DOM events which could wreak havoc. Reverify
|
|
// things and be careful.
|
|
if (!wrapper->mLastOverElement)
|
|
return;
|
|
|
|
// Store the first mouseOut event we fire and don't refire mouseOut
|
|
// to that element while the first mouseOut is still ongoing.
|
|
wrapper->mFirstOutEventElement = wrapper->mLastOverElement;
|
|
|
|
// Don't touch hover state if aMovingInto is non-null. Caller will update
|
|
// hover state itself, and we have optimizations for hover switching between
|
|
// two nearby elements both deep in the DOM tree that would be defeated by
|
|
// switching the hover state to null here.
|
|
bool isPointer = aMouseEvent->mClass == ePointerEventClass;
|
|
if (!aMovingInto && !isPointer) {
|
|
// Unset :hover
|
|
SetContentState(nullptr, NS_EVENT_STATE_HOVER);
|
|
}
|
|
|
|
EnterLeaveDispatcher leaveDispatcher(this, wrapper->mLastOverElement,
|
|
aMovingInto, aMouseEvent,
|
|
isPointer ? ePointerLeave : eMouseLeave);
|
|
|
|
// Fire mouseout
|
|
DispatchMouseOrPointerEvent(aMouseEvent, isPointer ? ePointerOut : eMouseOut,
|
|
wrapper->mLastOverElement, aMovingInto);
|
|
leaveDispatcher.Dispatch();
|
|
|
|
wrapper->mLastOverFrame = nullptr;
|
|
wrapper->mLastOverElement = nullptr;
|
|
|
|
// Turn recursion protection back off
|
|
wrapper->mFirstOutEventElement = nullptr;
|
|
}
|
|
|
|
void
|
|
EventStateManager::NotifyMouseOver(WidgetMouseEvent* aMouseEvent,
|
|
nsIContent* aContent)
|
|
{
|
|
NS_ASSERTION(aContent, "Mouse must be over something");
|
|
|
|
RefPtr<OverOutElementsWrapper> wrapper = GetWrapperByEventID(aMouseEvent);
|
|
|
|
if (!wrapper || wrapper->mLastOverElement == aContent)
|
|
return;
|
|
|
|
// Before firing mouseover, check for recursion
|
|
if (aContent == wrapper->mFirstOverEventElement)
|
|
return;
|
|
|
|
// Check to see if we're a subdocument and if so update the parent
|
|
// document's ESM state to indicate that the mouse is over the
|
|
// content associated with our subdocument.
|
|
EnsureDocument(mPresContext);
|
|
if (nsIDocument *parentDoc = mDocument->GetParentDocument()) {
|
|
if (nsIContent *docContent = parentDoc->FindContentForSubDocument(mDocument)) {
|
|
if (nsIPresShell *parentShell = parentDoc->GetShell()) {
|
|
EventStateManager* parentESM =
|
|
parentShell->GetPresContext()->EventStateManager();
|
|
parentESM->NotifyMouseOver(aMouseEvent, docContent);
|
|
}
|
|
}
|
|
}
|
|
// Firing the DOM event in the parent document could cause all kinds
|
|
// of havoc. Reverify and take care.
|
|
if (wrapper->mLastOverElement == aContent)
|
|
return;
|
|
|
|
// Remember mLastOverElement as the related content for the
|
|
// DispatchMouseOrPointerEvent() call below, since NotifyMouseOut() resets it, bug 298477.
|
|
nsCOMPtr<nsIContent> lastOverElement = wrapper->mLastOverElement;
|
|
|
|
bool isPointer = aMouseEvent->mClass == ePointerEventClass;
|
|
|
|
EnterLeaveDispatcher enterDispatcher(this, aContent, lastOverElement,
|
|
aMouseEvent,
|
|
isPointer ? ePointerEnter : eMouseEnter);
|
|
|
|
NotifyMouseOut(aMouseEvent, aContent);
|
|
|
|
// Store the first mouseOver event we fire and don't refire mouseOver
|
|
// to that element while the first mouseOver is still ongoing.
|
|
wrapper->mFirstOverEventElement = aContent;
|
|
|
|
if (!isPointer) {
|
|
SetContentState(aContent, NS_EVENT_STATE_HOVER);
|
|
}
|
|
|
|
// Fire mouseover
|
|
wrapper->mLastOverFrame =
|
|
DispatchMouseOrPointerEvent(aMouseEvent,
|
|
isPointer ? ePointerOver : eMouseOver,
|
|
aContent, lastOverElement);
|
|
enterDispatcher.Dispatch();
|
|
wrapper->mLastOverElement = aContent;
|
|
|
|
// Turn recursion protection back off
|
|
wrapper->mFirstOverEventElement = nullptr;
|
|
}
|
|
|
|
// Returns the center point of the window's client area. This is
|
|
// in widget coordinates, i.e. relative to the widget's top-left
|
|
// corner, not in screen coordinates, the same units that UIEvent::
|
|
// refpoint is in. It may not be the exact center of the window if
|
|
// the platform requires rounding the coordinate.
|
|
static LayoutDeviceIntPoint
|
|
GetWindowClientRectCenter(nsIWidget* aWidget)
|
|
{
|
|
NS_ENSURE_TRUE(aWidget, LayoutDeviceIntPoint(0, 0));
|
|
|
|
LayoutDeviceIntRect rect = aWidget->GetClientBounds();
|
|
LayoutDeviceIntPoint point(rect.x + rect.width / 2,
|
|
rect.y + rect.height / 2);
|
|
int32_t round = aWidget->RoundsWidgetCoordinatesTo();
|
|
point.x = point.x / round * round;
|
|
point.y = point.y / round * round;
|
|
return point - aWidget->WidgetToScreenOffset();
|
|
}
|
|
|
|
void
|
|
EventStateManager::GeneratePointerEnterExit(EventMessage aMessage,
|
|
WidgetMouseEvent* aEvent)
|
|
{
|
|
WidgetPointerEvent pointerEvent(*aEvent);
|
|
pointerEvent.mMessage = aMessage;
|
|
GenerateMouseEnterExit(&pointerEvent);
|
|
}
|
|
|
|
void
|
|
EventStateManager::GenerateMouseEnterExit(WidgetMouseEvent* aMouseEvent)
|
|
{
|
|
EnsureDocument(mPresContext);
|
|
if (!mDocument)
|
|
return;
|
|
|
|
// Hold onto old target content through the event and reset after.
|
|
nsCOMPtr<nsIContent> targetBeforeEvent = mCurrentTargetContent;
|
|
|
|
switch(aMouseEvent->mMessage) {
|
|
case eMouseMove:
|
|
{
|
|
// Mouse movement is reported on the MouseEvent.movement{X,Y} fields.
|
|
// Movement is calculated in UIEvent::GetMovementPoint() as:
|
|
// previous_mousemove_mRefPoint - current_mousemove_mRefPoint.
|
|
if (sIsPointerLocked && aMouseEvent->mWidget) {
|
|
// The pointer is locked. If the pointer is not located at the center of
|
|
// the window, dispatch a synthetic mousemove to return the pointer there.
|
|
// Doing this between "real" pointer moves gives the impression that the
|
|
// (locked) pointer can continue moving and won't stop at the screen
|
|
// boundary. We cancel the synthetic event so that we don't end up
|
|
// dispatching the centering move event to content.
|
|
LayoutDeviceIntPoint center =
|
|
GetWindowClientRectCenter(aMouseEvent->mWidget);
|
|
aMouseEvent->mLastRefPoint = center;
|
|
if (aMouseEvent->mRefPoint != center) {
|
|
// Mouse move doesn't finish at the center of the window. Dispatch a
|
|
// synthetic native mouse event to move the pointer back to the center
|
|
// of the window, to faciliate more movement. But first, record that
|
|
// we've dispatched a synthetic mouse movement, so we can cancel it
|
|
// in the other branch here.
|
|
sSynthCenteringPoint = center;
|
|
aMouseEvent->mWidget->SynthesizeNativeMouseMove(
|
|
center + aMouseEvent->mWidget->WidgetToScreenOffset(), nullptr);
|
|
} else if (aMouseEvent->mRefPoint == sSynthCenteringPoint) {
|
|
// This is the "synthetic native" event we dispatched to re-center the
|
|
// pointer. Cancel it so we don't expose the centering move to content.
|
|
aMouseEvent->StopPropagation();
|
|
// Clear sSynthCenteringPoint so we don't cancel other events
|
|
// targeted at the center.
|
|
sSynthCenteringPoint = kInvalidRefPoint;
|
|
}
|
|
} else if (sLastRefPoint == kInvalidRefPoint) {
|
|
// We don't have a valid previous mousemove mRefPoint. This is either
|
|
// the first move we've encountered, or the mouse has just re-entered
|
|
// the application window. We should report (0,0) movement for this
|
|
// case, so make the current and previous mRefPoints the same.
|
|
aMouseEvent->mLastRefPoint = aMouseEvent->mRefPoint;
|
|
} else {
|
|
aMouseEvent->mLastRefPoint = sLastRefPoint;
|
|
}
|
|
|
|
// Update the last known mRefPoint with the current mRefPoint.
|
|
sLastRefPoint = aMouseEvent->mRefPoint;
|
|
}
|
|
MOZ_FALLTHROUGH;
|
|
case ePointerMove:
|
|
case ePointerDown:
|
|
case ePointerGotCapture:
|
|
{
|
|
// Get the target content target (mousemove target == mouseover target)
|
|
nsCOMPtr<nsIContent> targetElement = GetEventTargetContent(aMouseEvent);
|
|
if (!targetElement) {
|
|
// We're always over the document root, even if we're only
|
|
// over dead space in a page (whose frame is not associated with
|
|
// any content) or in print preview dead space
|
|
targetElement = mDocument->GetRootElement();
|
|
}
|
|
if (targetElement) {
|
|
NotifyMouseOver(aMouseEvent, targetElement);
|
|
}
|
|
}
|
|
break;
|
|
case ePointerUp:
|
|
{
|
|
// Get the target content target (mousemove target == mouseover target)
|
|
nsCOMPtr<nsIContent> targetElement = GetEventTargetContent(aMouseEvent);
|
|
if (!targetElement) {
|
|
// We're always over the document root, even if we're only
|
|
// over dead space in a page (whose frame is not associated with
|
|
// any content) or in print preview dead space
|
|
targetElement = mDocument->GetRootElement();
|
|
}
|
|
if (targetElement) {
|
|
RefPtr<OverOutElementsWrapper> helper = GetWrapperByEventID(aMouseEvent);
|
|
if (helper) {
|
|
helper->mLastOverElement = targetElement;
|
|
}
|
|
NotifyMouseOut(aMouseEvent, nullptr);
|
|
}
|
|
}
|
|
break;
|
|
case ePointerLeave:
|
|
case ePointerCancel:
|
|
case eMouseExitFromWidget:
|
|
{
|
|
// This is actually the window mouse exit or pointer leave event. We're not moving
|
|
// into any new element.
|
|
|
|
RefPtr<OverOutElementsWrapper> helper = GetWrapperByEventID(aMouseEvent);
|
|
if (helper && helper->mLastOverFrame &&
|
|
nsContentUtils::GetTopLevelWidget(aMouseEvent->mWidget) !=
|
|
nsContentUtils::GetTopLevelWidget(helper->mLastOverFrame->GetNearestWidget())) {
|
|
// the Mouse/PointerOut event widget doesn't have same top widget with
|
|
// mLastOverFrame, it's a spurious event for mLastOverFrame
|
|
break;
|
|
}
|
|
|
|
// Reset sLastRefPoint, so that we'll know not to report any
|
|
// movement the next time we re-enter the window.
|
|
sLastRefPoint = kInvalidRefPoint;
|
|
|
|
NotifyMouseOut(aMouseEvent, nullptr);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
// reset mCurretTargetContent to what it was
|
|
mCurrentTargetContent = targetBeforeEvent;
|
|
}
|
|
|
|
OverOutElementsWrapper*
|
|
EventStateManager::GetWrapperByEventID(WidgetMouseEvent* aEvent)
|
|
{
|
|
WidgetPointerEvent* pointer = aEvent->AsPointerEvent();
|
|
if (!pointer) {
|
|
MOZ_ASSERT(aEvent->AsMouseEvent() != nullptr);
|
|
if (!mMouseEnterLeaveHelper) {
|
|
mMouseEnterLeaveHelper = new OverOutElementsWrapper();
|
|
}
|
|
return mMouseEnterLeaveHelper;
|
|
}
|
|
return mPointersEnterLeaveHelper.LookupForAdd(pointer->pointerId).OrInsert(
|
|
[] () { return new OverOutElementsWrapper(); });
|
|
}
|
|
|
|
/* static */ void
|
|
EventStateManager::SetPointerLock(nsIWidget* aWidget,
|
|
nsIContent* aElement)
|
|
{
|
|
// NOTE: aElement will be nullptr when unlocking.
|
|
sIsPointerLocked = !!aElement;
|
|
|
|
// Reset mouse wheel transaction
|
|
WheelTransaction::EndTransaction();
|
|
|
|
// Deal with DnD events
|
|
nsCOMPtr<nsIDragService> dragService =
|
|
do_GetService("@mozilla.org/widget/dragservice;1");
|
|
|
|
if (sIsPointerLocked) {
|
|
MOZ_ASSERT(aWidget, "Locking pointer requires a widget");
|
|
|
|
// Store the last known ref point so we can reposition the pointer after unlock.
|
|
sPreLockPoint = sLastRefPoint;
|
|
|
|
// Fire a synthetic mouse move to ensure event state is updated. We first
|
|
// set the mouse to the center of the window, so that the mouse event
|
|
// doesn't report any movement.
|
|
sLastRefPoint = GetWindowClientRectCenter(aWidget);
|
|
aWidget->SynthesizeNativeMouseMove(
|
|
sLastRefPoint + aWidget->WidgetToScreenOffset(), nullptr);
|
|
|
|
// Suppress DnD
|
|
if (dragService) {
|
|
dragService->Suppress();
|
|
}
|
|
} else {
|
|
// Unlocking, so return pointer to the original position by firing a
|
|
// synthetic mouse event. We first reset sLastRefPoint to its
|
|
// pre-pointerlock position, so that the synthetic mouse event reports
|
|
// no movement.
|
|
sLastRefPoint = sPreLockPoint;
|
|
// Reset SynthCenteringPoint to invalid so that next time we start
|
|
// locking pointer, it has its initial value.
|
|
sSynthCenteringPoint = kInvalidRefPoint;
|
|
if (aWidget) {
|
|
aWidget->SynthesizeNativeMouseMove(
|
|
sPreLockPoint + aWidget->WidgetToScreenOffset(), nullptr);
|
|
}
|
|
|
|
// Unsuppress DnD
|
|
if (dragService) {
|
|
dragService->Unsuppress();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::GenerateDragDropEnterExit(nsPresContext* aPresContext,
|
|
WidgetDragEvent* aDragEvent)
|
|
{
|
|
//Hold onto old target content through the event and reset after.
|
|
nsCOMPtr<nsIContent> targetBeforeEvent = mCurrentTargetContent;
|
|
|
|
switch(aDragEvent->mMessage) {
|
|
case eDragOver:
|
|
{
|
|
// when dragging from one frame to another, events are fired in the
|
|
// order: dragexit, dragenter, dragleave
|
|
if (sLastDragOverFrame != mCurrentTarget) {
|
|
//We'll need the content, too, to check if it changed separately from the frames.
|
|
nsCOMPtr<nsIContent> lastContent;
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
mCurrentTarget->GetContentForEvent(aDragEvent,
|
|
getter_AddRefs(targetContent));
|
|
|
|
if (sLastDragOverFrame) {
|
|
//The frame has changed but the content may not have. Check before dispatching to content
|
|
sLastDragOverFrame->GetContentForEvent(aDragEvent,
|
|
getter_AddRefs(lastContent));
|
|
|
|
FireDragEnterOrExit(sLastDragOverFrame->PresContext(),
|
|
aDragEvent, eDragExit,
|
|
targetContent, lastContent, sLastDragOverFrame);
|
|
nsIContent* target = sLastDragOverFrame ? sLastDragOverFrame.GetFrame()->GetContent() : nullptr;
|
|
if (IsRemoteTarget(target)) {
|
|
// Dragging something and moving from web content to chrome only
|
|
// fires dragexit and dragleave to xul:browser. We have to forward
|
|
// dragexit to sLastDragOverFrame when its content is a remote
|
|
// target. We don't forward dragleave since it's generated from
|
|
// dragexit.
|
|
WidgetDragEvent remoteEvent(aDragEvent->IsTrusted(), eDragExit,
|
|
aDragEvent->mWidget);
|
|
remoteEvent.AssignDragEventData(*aDragEvent, true);
|
|
nsEventStatus remoteStatus = nsEventStatus_eIgnore;
|
|
HandleCrossProcessEvent(&remoteEvent, &remoteStatus);
|
|
}
|
|
}
|
|
|
|
AutoWeakFrame currentTraget = mCurrentTarget;
|
|
FireDragEnterOrExit(aPresContext, aDragEvent, eDragEnter,
|
|
lastContent, targetContent, currentTraget);
|
|
|
|
if (sLastDragOverFrame) {
|
|
FireDragEnterOrExit(sLastDragOverFrame->PresContext(),
|
|
aDragEvent, eDragLeave,
|
|
targetContent, lastContent, sLastDragOverFrame);
|
|
}
|
|
|
|
sLastDragOverFrame = mCurrentTarget;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eDragExit:
|
|
{
|
|
//This is actually the window mouse exit event.
|
|
if (sLastDragOverFrame) {
|
|
nsCOMPtr<nsIContent> lastContent;
|
|
sLastDragOverFrame->GetContentForEvent(aDragEvent,
|
|
getter_AddRefs(lastContent));
|
|
|
|
RefPtr<nsPresContext> lastDragOverFramePresContext = sLastDragOverFrame->PresContext();
|
|
FireDragEnterOrExit(lastDragOverFramePresContext,
|
|
aDragEvent, eDragExit,
|
|
nullptr, lastContent, sLastDragOverFrame);
|
|
FireDragEnterOrExit(lastDragOverFramePresContext,
|
|
aDragEvent, eDragLeave,
|
|
nullptr, lastContent, sLastDragOverFrame);
|
|
|
|
sLastDragOverFrame = nullptr;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
//reset mCurretTargetContent to what it was
|
|
mCurrentTargetContent = targetBeforeEvent;
|
|
|
|
// Now flush all pending notifications, for better responsiveness.
|
|
FlushPendingEvents(aPresContext);
|
|
}
|
|
|
|
void
|
|
EventStateManager::FireDragEnterOrExit(nsPresContext* aPresContext,
|
|
WidgetDragEvent* aDragEvent,
|
|
EventMessage aMessage,
|
|
nsIContent* aRelatedTarget,
|
|
nsIContent* aTargetContent,
|
|
AutoWeakFrame& aTargetFrame)
|
|
{
|
|
MOZ_ASSERT(aMessage == eDragLeave || aMessage == eDragExit ||
|
|
aMessage == eDragEnter);
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
WidgetDragEvent event(aDragEvent->IsTrusted(), aMessage, aDragEvent->mWidget);
|
|
event.AssignDragEventData(*aDragEvent, true);
|
|
mCurrentTargetContent = aTargetContent;
|
|
|
|
if (aTargetContent != aRelatedTarget) {
|
|
//XXX This event should still go somewhere!!
|
|
if (aTargetContent) {
|
|
EventDispatcher::Dispatch(aTargetContent, aPresContext, &event,
|
|
nullptr, &status);
|
|
}
|
|
|
|
// adjust the drag hover if the dragenter event was cancelled or this is a drag exit
|
|
if (status == nsEventStatus_eConsumeNoDefault || aMessage == eDragExit) {
|
|
SetContentState((aMessage == eDragEnter) ? aTargetContent : nullptr,
|
|
NS_EVENT_STATE_DRAGOVER);
|
|
}
|
|
|
|
// collect any changes to moz cursor settings stored in the event's
|
|
// data transfer.
|
|
UpdateDragDataTransfer(&event);
|
|
}
|
|
|
|
// Finally dispatch the event to the frame
|
|
if (aTargetFrame)
|
|
aTargetFrame->HandleEvent(aPresContext, &event, &status);
|
|
}
|
|
|
|
void
|
|
EventStateManager::UpdateDragDataTransfer(WidgetDragEvent* dragEvent)
|
|
{
|
|
NS_ASSERTION(dragEvent, "drag event is null in UpdateDragDataTransfer!");
|
|
if (!dragEvent->mDataTransfer) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession();
|
|
|
|
if (dragSession) {
|
|
// the initial dataTransfer is the one from the dragstart event that
|
|
// was set on the dragSession when the drag began.
|
|
nsCOMPtr<nsIDOMDataTransfer> initialDataTransfer;
|
|
dragSession->GetDataTransfer(getter_AddRefs(initialDataTransfer));
|
|
if (initialDataTransfer) {
|
|
// retrieve the current moz cursor setting and save it.
|
|
nsAutoString mozCursor;
|
|
dragEvent->mDataTransfer->GetMozCursor(mozCursor);
|
|
initialDataTransfer->SetMozCursor(mozCursor);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::SetClickCount(WidgetMouseEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsCOMPtr<nsIContent> mouseContent;
|
|
nsIContent* mouseContentParent = nullptr;
|
|
if (mCurrentTarget) {
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(mouseContent));
|
|
}
|
|
if (mouseContent) {
|
|
if (mouseContent->IsNodeOfType(nsINode::eTEXT)) {
|
|
mouseContent = mouseContent->GetParent();
|
|
}
|
|
if (mouseContent && mouseContent->IsRootOfNativeAnonymousSubtree()) {
|
|
mouseContentParent = mouseContent->GetParent();
|
|
}
|
|
}
|
|
|
|
switch (aEvent->button) {
|
|
case WidgetMouseEvent::eLeftButton:
|
|
if (aEvent->mMessage == eMouseDown) {
|
|
mLastLeftMouseDownContent = mouseContent;
|
|
mLastLeftMouseDownContentParent = mouseContentParent;
|
|
} else if (aEvent->mMessage == eMouseUp) {
|
|
if (mLastLeftMouseDownContent == mouseContent ||
|
|
mLastLeftMouseDownContentParent == mouseContent ||
|
|
mLastLeftMouseDownContent == mouseContentParent) {
|
|
aEvent->mClickCount = mLClickCount;
|
|
mLClickCount = 0;
|
|
} else {
|
|
aEvent->mClickCount = 0;
|
|
}
|
|
mLastLeftMouseDownContent = nullptr;
|
|
mLastLeftMouseDownContentParent = nullptr;
|
|
}
|
|
break;
|
|
|
|
case WidgetMouseEvent::eMiddleButton:
|
|
if (aEvent->mMessage == eMouseDown) {
|
|
mLastMiddleMouseDownContent = mouseContent;
|
|
mLastMiddleMouseDownContentParent = mouseContentParent;
|
|
} else if (aEvent->mMessage == eMouseUp) {
|
|
if (mLastMiddleMouseDownContent == mouseContent ||
|
|
mLastMiddleMouseDownContentParent == mouseContent ||
|
|
mLastMiddleMouseDownContent == mouseContentParent) {
|
|
aEvent->mClickCount = mMClickCount;
|
|
mMClickCount = 0;
|
|
} else {
|
|
aEvent->mClickCount = 0;
|
|
}
|
|
mLastMiddleMouseDownContent = nullptr;
|
|
mLastMiddleMouseDownContentParent = nullptr;
|
|
}
|
|
break;
|
|
|
|
case WidgetMouseEvent::eRightButton:
|
|
if (aEvent->mMessage == eMouseDown) {
|
|
mLastRightMouseDownContent = mouseContent;
|
|
mLastRightMouseDownContentParent = mouseContentParent;
|
|
} else if (aEvent->mMessage == eMouseUp) {
|
|
if (mLastRightMouseDownContent == mouseContent ||
|
|
mLastRightMouseDownContentParent == mouseContent ||
|
|
mLastRightMouseDownContent == mouseContentParent) {
|
|
aEvent->mClickCount = mRClickCount;
|
|
mRClickCount = 0;
|
|
} else {
|
|
aEvent->mClickCount = 0;
|
|
}
|
|
mLastRightMouseDownContent = nullptr;
|
|
mLastRightMouseDownContentParent = nullptr;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::InitAndDispatchClickEvent(WidgetMouseEvent* aEvent,
|
|
nsEventStatus* aStatus,
|
|
EventMessage aMessage,
|
|
nsIPresShell* aPresShell,
|
|
nsIContent* aMouseTarget,
|
|
AutoWeakFrame aCurrentTarget,
|
|
bool aNoContentDispatch)
|
|
{
|
|
WidgetMouseEvent event(aEvent->IsTrusted(), aMessage,
|
|
aEvent->mWidget, WidgetMouseEvent::eReal);
|
|
|
|
event.mRefPoint = aEvent->mRefPoint;
|
|
event.mClickCount = aEvent->mClickCount;
|
|
event.mModifiers = aEvent->mModifiers;
|
|
event.buttons = aEvent->buttons;
|
|
event.mTime = aEvent->mTime;
|
|
event.mTimeStamp = aEvent->mTimeStamp;
|
|
event.mFlags.mNoContentDispatch = aNoContentDispatch;
|
|
event.button = aEvent->button;
|
|
event.pointerId = aEvent->pointerId;
|
|
event.inputSource = aEvent->inputSource;
|
|
|
|
return aPresShell->HandleEventWithTarget(&event, aCurrentTarget,
|
|
aMouseTarget, aStatus);
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::CheckForAndDispatchClick(WidgetMouseEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsresult ret = NS_OK;
|
|
|
|
//If mouse is still over same element, clickcount will be > 1.
|
|
//If it has moved it will be zero, so no click.
|
|
if (aEvent->mClickCount) {
|
|
//Check that the window isn't disabled before firing a click
|
|
//(see bug 366544).
|
|
if (aEvent->mWidget && !aEvent->mWidget->IsEnabled()) {
|
|
return ret;
|
|
}
|
|
//fire click
|
|
bool notDispatchToContents =
|
|
(aEvent->button == WidgetMouseEvent::eMiddleButton ||
|
|
aEvent->button == WidgetMouseEvent::eRightButton);
|
|
|
|
bool fireAuxClick = notDispatchToContents;
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = mPresContext->GetPresShell();
|
|
if (presShell) {
|
|
nsCOMPtr<nsIContent> mouseContent = GetEventTargetContent(aEvent);
|
|
// Click events apply to *elements* not nodes. At this point the target
|
|
// content may have been reset to some non-element content, and so we need
|
|
// to walk up the closest ancestor element, just like we do in
|
|
// nsPresShell::HandlePositionedEvent.
|
|
while (mouseContent && !mouseContent->IsElement()) {
|
|
mouseContent = mouseContent->GetParent();
|
|
}
|
|
|
|
if (!mouseContent && !mCurrentTarget) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// HandleEvent clears out mCurrentTarget which we might need again
|
|
AutoWeakFrame currentTarget = mCurrentTarget;
|
|
ret = InitAndDispatchClickEvent(aEvent, aStatus, eMouseClick,
|
|
presShell, mouseContent, currentTarget,
|
|
notDispatchToContents);
|
|
|
|
if (NS_SUCCEEDED(ret) && aEvent->mClickCount == 2 &&
|
|
mouseContent && mouseContent->IsInComposedDoc()) {
|
|
//fire double click
|
|
ret = InitAndDispatchClickEvent(aEvent, aStatus, eMouseDoubleClick,
|
|
presShell, mouseContent, currentTarget,
|
|
notDispatchToContents);
|
|
}
|
|
if (NS_SUCCEEDED(ret) && mouseContent && fireAuxClick &&
|
|
mouseContent->IsInComposedDoc()) {
|
|
ret = InitAndDispatchClickEvent(aEvent, aStatus, eMouseAuxClick,
|
|
presShell, mouseContent, currentTarget,
|
|
false);
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
nsIFrame*
|
|
EventStateManager::GetEventTarget()
|
|
{
|
|
nsIPresShell *shell;
|
|
if (mCurrentTarget ||
|
|
!mPresContext ||
|
|
!(shell = mPresContext->GetPresShell())) {
|
|
return mCurrentTarget;
|
|
}
|
|
|
|
if (mCurrentTargetContent) {
|
|
mCurrentTarget = mPresContext->GetPrimaryFrameFor(mCurrentTargetContent);
|
|
if (mCurrentTarget) {
|
|
return mCurrentTarget;
|
|
}
|
|
}
|
|
|
|
nsIFrame* frame = shell->GetEventTargetFrame();
|
|
return (mCurrentTarget = frame);
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
EventStateManager::GetEventTargetContent(WidgetEvent* aEvent)
|
|
{
|
|
if (aEvent &&
|
|
(aEvent->mMessage == eFocus || aEvent->mMessage == eBlur)) {
|
|
nsCOMPtr<nsIContent> content = GetFocusedContent();
|
|
return content.forget();
|
|
}
|
|
|
|
if (mCurrentTargetContent) {
|
|
nsCOMPtr<nsIContent> content = mCurrentTargetContent;
|
|
return content.forget();
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
|
|
nsIPresShell *presShell = mPresContext->GetPresShell();
|
|
if (presShell) {
|
|
content = presShell->GetEventTargetContent(aEvent);
|
|
}
|
|
|
|
// Some events here may set mCurrentTarget but not set the corresponding
|
|
// event target in the PresShell.
|
|
if (!content && mCurrentTarget) {
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(content));
|
|
}
|
|
|
|
return content.forget();
|
|
}
|
|
|
|
static Element*
|
|
GetLabelTarget(nsIContent* aPossibleLabel)
|
|
{
|
|
mozilla::dom::HTMLLabelElement* label =
|
|
mozilla::dom::HTMLLabelElement::FromContent(aPossibleLabel);
|
|
if (!label)
|
|
return nullptr;
|
|
|
|
return label->GetLabeledElement();
|
|
}
|
|
|
|
static nsIContent*
|
|
FindCommonAncestor(nsIContent* aNode1, nsIContent* aNode2)
|
|
{
|
|
if (!aNode1 || !aNode2) {
|
|
return nullptr;
|
|
}
|
|
return nsContentUtils::GetCommonFlattenedTreeAncestor(aNode1, aNode2);
|
|
}
|
|
|
|
/* static */
|
|
void
|
|
EventStateManager::SetFullScreenState(Element* aElement, bool aIsFullScreen)
|
|
{
|
|
DoStateChange(aElement, NS_EVENT_STATE_FULL_SCREEN, aIsFullScreen);
|
|
}
|
|
|
|
/* static */
|
|
inline void
|
|
EventStateManager::DoStateChange(Element* aElement, EventStates aState,
|
|
bool aAddState)
|
|
{
|
|
if (aAddState) {
|
|
aElement->AddStates(aState);
|
|
} else {
|
|
aElement->RemoveStates(aState);
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
inline void
|
|
EventStateManager::DoStateChange(nsIContent* aContent, EventStates aState,
|
|
bool aStateAdded)
|
|
{
|
|
if (aContent->IsElement()) {
|
|
DoStateChange(aContent->AsElement(), aState, aStateAdded);
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void
|
|
EventStateManager::UpdateAncestorState(nsIContent* aStartNode,
|
|
nsIContent* aStopBefore,
|
|
EventStates aState,
|
|
bool aAddState)
|
|
{
|
|
for (; aStartNode && aStartNode != aStopBefore;
|
|
aStartNode = aStartNode->GetFlattenedTreeParent()) {
|
|
// We might be starting with a non-element (e.g. a text node) and
|
|
// if someone is doing something weird might be ending with a
|
|
// non-element too (e.g. a document fragment)
|
|
if (!aStartNode->IsElement()) {
|
|
continue;
|
|
}
|
|
Element* element = aStartNode->AsElement();
|
|
DoStateChange(element, aState, aAddState);
|
|
Element* labelTarget = GetLabelTarget(element);
|
|
if (labelTarget) {
|
|
DoStateChange(labelTarget, aState, aAddState);
|
|
}
|
|
}
|
|
|
|
if (aAddState) {
|
|
// We might be in a situation where a node was in hover both
|
|
// because it was hovered and because the label for it was
|
|
// hovered, and while we stopped hovering the node the label is
|
|
// still hovered. Or we might have had two nested labels for the
|
|
// same node, and while one is no longer hovered the other still
|
|
// is. In that situation, the label that's still hovered will be
|
|
// aStopBefore or some ancestor of it, and the call we just made
|
|
// to UpdateAncestorState with aAddState = false would have
|
|
// removed the hover state from the node. But the node should
|
|
// still be in hover state. To handle this situation we need to
|
|
// keep walking up the tree and any time we find a label mark its
|
|
// corresponding node as still in our state.
|
|
for ( ; aStartNode; aStartNode = aStartNode->GetFlattenedTreeParent()) {
|
|
if (!aStartNode->IsElement()) {
|
|
continue;
|
|
}
|
|
|
|
Element* labelTarget = GetLabelTarget(aStartNode->AsElement());
|
|
if (labelTarget && !labelTarget->State().HasState(aState)) {
|
|
DoStateChange(labelTarget, aState, true);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
EventStateManager::SetContentState(nsIContent* aContent, EventStates aState)
|
|
{
|
|
// We manage 4 states here: ACTIVE, HOVER, DRAGOVER, URLTARGET
|
|
// The input must be exactly one of them.
|
|
NS_PRECONDITION(aState == NS_EVENT_STATE_ACTIVE ||
|
|
aState == NS_EVENT_STATE_HOVER ||
|
|
aState == NS_EVENT_STATE_DRAGOVER ||
|
|
aState == NS_EVENT_STATE_URLTARGET,
|
|
"Unexpected state");
|
|
|
|
nsCOMPtr<nsIContent> notifyContent1;
|
|
nsCOMPtr<nsIContent> notifyContent2;
|
|
bool updateAncestors;
|
|
|
|
if (aState == NS_EVENT_STATE_HOVER || aState == NS_EVENT_STATE_ACTIVE) {
|
|
// Hover and active are hierarchical
|
|
updateAncestors = true;
|
|
|
|
// check to see that this state is allowed by style. Check dragover too?
|
|
// XXX Is this even what we want?
|
|
if (mCurrentTarget)
|
|
{
|
|
const nsStyleUserInterface* ui = mCurrentTarget->StyleUserInterface();
|
|
if (ui->mUserInput == StyleUserInput::None) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (aState == NS_EVENT_STATE_ACTIVE) {
|
|
// Editable content can never become active since their default actions
|
|
// are disabled. Watch out for editable content in native anonymous
|
|
// subtrees though, as they belong to text controls.
|
|
if (aContent && aContent->IsEditable() &&
|
|
!aContent->IsInNativeAnonymousSubtree()) {
|
|
aContent = nullptr;
|
|
}
|
|
if (aContent != mActiveContent) {
|
|
notifyContent1 = aContent;
|
|
notifyContent2 = mActiveContent;
|
|
mActiveContent = aContent;
|
|
}
|
|
} else {
|
|
NS_ASSERTION(aState == NS_EVENT_STATE_HOVER, "How did that happen?");
|
|
nsIContent* newHover;
|
|
|
|
if (mPresContext->IsDynamic()) {
|
|
newHover = aContent;
|
|
} else {
|
|
NS_ASSERTION(!aContent ||
|
|
aContent->GetComposedDoc() ==
|
|
mPresContext->PresShell()->GetDocument(),
|
|
"Unexpected document");
|
|
nsIFrame *frame = aContent ? aContent->GetPrimaryFrame() : nullptr;
|
|
if (frame && nsLayoutUtils::IsViewportScrollbarFrame(frame)) {
|
|
// The scrollbars of viewport should not ignore the hover state.
|
|
// Because they are *not* the content of the web page.
|
|
newHover = aContent;
|
|
} else {
|
|
// All contents of the web page should ignore the hover state.
|
|
newHover = nullptr;
|
|
}
|
|
}
|
|
|
|
if (newHover != mHoverContent) {
|
|
notifyContent1 = newHover;
|
|
notifyContent2 = mHoverContent;
|
|
mHoverContent = newHover;
|
|
}
|
|
}
|
|
} else {
|
|
updateAncestors = false;
|
|
if (aState == NS_EVENT_STATE_DRAGOVER) {
|
|
if (aContent != sDragOverContent) {
|
|
notifyContent1 = aContent;
|
|
notifyContent2 = sDragOverContent;
|
|
sDragOverContent = aContent;
|
|
}
|
|
} else if (aState == NS_EVENT_STATE_URLTARGET) {
|
|
if (aContent != mURLTargetContent) {
|
|
notifyContent1 = aContent;
|
|
notifyContent2 = mURLTargetContent;
|
|
mURLTargetContent = aContent;
|
|
}
|
|
}
|
|
}
|
|
|
|
// We need to keep track of which of notifyContent1 and notifyContent2 is
|
|
// getting the state set and which is getting it unset. If both are
|
|
// non-null, then notifyContent1 is having the state set and notifyContent2
|
|
// is having it unset. But if one of them is null, we need to keep track of
|
|
// the right thing for notifyContent1 explicitly.
|
|
bool content1StateSet = true;
|
|
if (!notifyContent1) {
|
|
// This is ok because FindCommonAncestor wouldn't find anything
|
|
// anyway if notifyContent1 is null.
|
|
notifyContent1 = notifyContent2;
|
|
notifyContent2 = nullptr;
|
|
content1StateSet = false;
|
|
}
|
|
|
|
if (notifyContent1 && mPresContext) {
|
|
EnsureDocument(mPresContext);
|
|
if (mDocument) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
if (updateAncestors) {
|
|
nsCOMPtr<nsIContent> commonAncestor =
|
|
FindCommonAncestor(notifyContent1, notifyContent2);
|
|
if (notifyContent2) {
|
|
// It's very important to first notify the state removal and
|
|
// then the state addition, because due to labels it's
|
|
// possible that we're removing state from some element but
|
|
// then adding it again (say because mHoverContent changed
|
|
// from a control to its label).
|
|
UpdateAncestorState(notifyContent2, commonAncestor, aState, false);
|
|
}
|
|
UpdateAncestorState(notifyContent1, commonAncestor, aState,
|
|
content1StateSet);
|
|
} else {
|
|
if (notifyContent2) {
|
|
DoStateChange(notifyContent2, aState, false);
|
|
}
|
|
DoStateChange(notifyContent1, aState, content1StateSet);
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
EventStateManager::ResetLastOverForContent(
|
|
const uint32_t& aIdx,
|
|
RefPtr<OverOutElementsWrapper>& aElemWrapper,
|
|
nsIContent* aContent)
|
|
{
|
|
if (aElemWrapper && aElemWrapper->mLastOverElement &&
|
|
nsContentUtils::ContentIsDescendantOf(aElemWrapper->mLastOverElement,
|
|
aContent)) {
|
|
aElemWrapper->mLastOverElement = nullptr;
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::ContentRemoved(nsIDocument* aDocument, nsIContent* aContent)
|
|
{
|
|
/*
|
|
* Anchor and area elements when focused or hovered might make the UI to show
|
|
* the current link. We want to make sure that the UI gets informed when they
|
|
* are actually removed from the DOM.
|
|
*/
|
|
if (aContent->IsAnyOfHTMLElements(nsGkAtoms::a, nsGkAtoms::area) &&
|
|
(aContent->AsElement()->State().HasAtLeastOneOfStates(NS_EVENT_STATE_FOCUS |
|
|
NS_EVENT_STATE_HOVER))) {
|
|
nsGenericHTMLElement* element = static_cast<nsGenericHTMLElement*>(aContent);
|
|
element->LeaveLink(
|
|
element->GetPresContext(nsGenericHTMLElement::eForComposedDoc));
|
|
}
|
|
|
|
IMEStateManager::OnRemoveContent(mPresContext, aContent);
|
|
|
|
// inform the focus manager that the content is being removed. If this
|
|
// content is focused, the focus will be removed without firing events.
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm)
|
|
fm->ContentRemoved(aDocument, aContent);
|
|
|
|
if (mHoverContent &&
|
|
nsContentUtils::ContentIsDescendantOf(mHoverContent, aContent)) {
|
|
// Since hover is hierarchical, set the current hover to the
|
|
// content's parent node.
|
|
SetContentState(aContent->GetParent(), NS_EVENT_STATE_HOVER);
|
|
}
|
|
|
|
if (mActiveContent &&
|
|
nsContentUtils::ContentIsDescendantOf(mActiveContent, aContent)) {
|
|
// Active is hierarchical, so set the current active to the
|
|
// content's parent node.
|
|
SetContentState(aContent->GetParent(), NS_EVENT_STATE_ACTIVE);
|
|
}
|
|
|
|
if (sDragOverContent &&
|
|
sDragOverContent->OwnerDoc() == aContent->OwnerDoc() &&
|
|
nsContentUtils::ContentIsDescendantOf(sDragOverContent, aContent)) {
|
|
sDragOverContent = nullptr;
|
|
}
|
|
|
|
// See bug 292146 for why we want to null this out
|
|
ResetLastOverForContent(0, mMouseEnterLeaveHelper, aContent);
|
|
for (auto iter = mPointersEnterLeaveHelper.Iter();
|
|
!iter.Done();
|
|
iter.Next()) {
|
|
ResetLastOverForContent(iter.Key(), iter.Data(), aContent);
|
|
}
|
|
}
|
|
|
|
bool
|
|
EventStateManager::EventStatusOK(WidgetGUIEvent* aEvent)
|
|
{
|
|
return !(aEvent->mMessage == eMouseDown &&
|
|
aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton &&
|
|
!sNormalLMouseEventInProcess);
|
|
}
|
|
|
|
//-------------------------------------------
|
|
// Access Key Registration
|
|
//-------------------------------------------
|
|
void
|
|
EventStateManager::RegisterAccessKey(nsIContent* aContent, uint32_t aKey)
|
|
{
|
|
if (aContent && mAccessKeys.IndexOf(aContent) == -1)
|
|
mAccessKeys.AppendObject(aContent);
|
|
}
|
|
|
|
void
|
|
EventStateManager::UnregisterAccessKey(nsIContent* aContent, uint32_t aKey)
|
|
{
|
|
if (aContent)
|
|
mAccessKeys.RemoveObject(aContent);
|
|
}
|
|
|
|
uint32_t
|
|
EventStateManager::GetRegisteredAccessKey(nsIContent* aContent)
|
|
{
|
|
MOZ_ASSERT(aContent);
|
|
|
|
if (mAccessKeys.IndexOf(aContent) == -1)
|
|
return 0;
|
|
|
|
nsAutoString accessKey;
|
|
aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accessKey);
|
|
return accessKey.First();
|
|
}
|
|
|
|
void
|
|
EventStateManager::EnsureDocument(nsPresContext* aPresContext)
|
|
{
|
|
if (!mDocument)
|
|
mDocument = aPresContext->Document();
|
|
}
|
|
|
|
void
|
|
EventStateManager::FlushPendingEvents(nsPresContext* aPresContext)
|
|
{
|
|
NS_PRECONDITION(nullptr != aPresContext, "nullptr ptr");
|
|
nsIPresShell *shell = aPresContext->GetPresShell();
|
|
if (shell) {
|
|
shell->FlushPendingNotifications(FlushType::InterruptibleLayout);
|
|
}
|
|
}
|
|
|
|
nsIContent*
|
|
EventStateManager::GetFocusedContent()
|
|
{
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
EnsureDocument(mPresContext);
|
|
if (!fm || !mDocument)
|
|
return nullptr;
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
|
|
return nsFocusManager::GetFocusedDescendant(mDocument->GetWindow(), false,
|
|
getter_AddRefs(focusedWindow));
|
|
}
|
|
|
|
//-------------------------------------------------------
|
|
// Return true if the docshell is visible
|
|
|
|
bool
|
|
EventStateManager::IsShellVisible(nsIDocShell* aShell)
|
|
{
|
|
NS_ASSERTION(aShell, "docshell is null");
|
|
|
|
nsCOMPtr<nsIBaseWindow> basewin = do_QueryInterface(aShell);
|
|
if (!basewin)
|
|
return true;
|
|
|
|
bool isVisible = true;
|
|
basewin->GetVisibility(&isVisible);
|
|
|
|
// We should be doing some additional checks here so that
|
|
// we don't tab into hidden tabs of tabbrowser. -bryner
|
|
|
|
return isVisible;
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::DoContentCommandEvent(WidgetContentCommandEvent* aEvent)
|
|
{
|
|
EnsureDocument(mPresContext);
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_FAILURE);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window(mDocument->GetWindow());
|
|
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsPIWindowRoot> root = window->GetTopWindowRoot();
|
|
NS_ENSURE_TRUE(root, NS_ERROR_FAILURE);
|
|
const char* cmd;
|
|
switch (aEvent->mMessage) {
|
|
case eContentCommandCut:
|
|
cmd = "cmd_cut";
|
|
break;
|
|
case eContentCommandCopy:
|
|
cmd = "cmd_copy";
|
|
break;
|
|
case eContentCommandPaste:
|
|
cmd = "cmd_paste";
|
|
break;
|
|
case eContentCommandDelete:
|
|
cmd = "cmd_delete";
|
|
break;
|
|
case eContentCommandUndo:
|
|
cmd = "cmd_undo";
|
|
break;
|
|
case eContentCommandRedo:
|
|
cmd = "cmd_redo";
|
|
break;
|
|
case eContentCommandPasteTransferable:
|
|
cmd = "cmd_pasteTransferable";
|
|
break;
|
|
case eContentCommandLookUpDictionary:
|
|
cmd = "cmd_lookUpDictionary";
|
|
break;
|
|
default:
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
nsCOMPtr<nsIController> controller;
|
|
nsresult rv = root->GetControllerForCommand(cmd, getter_AddRefs(controller));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (!controller) {
|
|
// When GetControllerForCommand succeeded but there is no controller, the
|
|
// command isn't supported.
|
|
aEvent->mIsEnabled = false;
|
|
} else {
|
|
bool canDoIt;
|
|
rv = controller->IsCommandEnabled(cmd, &canDoIt);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
aEvent->mIsEnabled = canDoIt;
|
|
if (canDoIt && !aEvent->mOnlyEnabledCheck) {
|
|
switch (aEvent->mMessage) {
|
|
case eContentCommandPasteTransferable: {
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
nsIContent* focusedContent = fm ? fm->GetFocusedContent() : nullptr;
|
|
RefPtr<TabParent> remote = TabParent::GetFrom(focusedContent);
|
|
if (remote) {
|
|
NS_ENSURE_TRUE(remote->Manager()->IsContentParent(), NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsITransferable> transferable = aEvent->mTransferable;
|
|
IPCDataTransfer ipcDataTransfer;
|
|
ContentParent* cp = remote->Manager()->AsContentParent();
|
|
nsContentUtils::TransferableToIPCTransferable(transferable,
|
|
&ipcDataTransfer,
|
|
false, nullptr,
|
|
cp);
|
|
bool isPrivateData = false;
|
|
transferable->GetIsPrivateData(&isPrivateData);
|
|
nsCOMPtr<nsIPrincipal> requestingPrincipal;
|
|
transferable->GetRequestingPrincipal(getter_AddRefs(requestingPrincipal));
|
|
remote->SendPasteTransferable(ipcDataTransfer, isPrivateData,
|
|
IPC::Principal(requestingPrincipal));
|
|
rv = NS_OK;
|
|
} else {
|
|
nsCOMPtr<nsICommandController> commandController = do_QueryInterface(controller);
|
|
NS_ENSURE_STATE(commandController);
|
|
|
|
nsCOMPtr<nsICommandParams> params = do_CreateInstance("@mozilla.org/embedcomp/command-params;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = params->SetISupportsValue("transferable", aEvent->mTransferable);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = commandController->DoCommandWithParams(cmd, params);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eContentCommandLookUpDictionary: {
|
|
nsCOMPtr<nsICommandController> commandController =
|
|
do_QueryInterface(controller);
|
|
if (NS_WARN_IF(!commandController)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsCOMPtr<nsICommandParams> params =
|
|
do_CreateInstance("@mozilla.org/embedcomp/command-params;1", &rv);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
rv = params->SetLongValue("x", aEvent->mRefPoint.x);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
rv = params->SetLongValue("y", aEvent->mRefPoint.y);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
rv = commandController->DoCommandWithParams(cmd, params);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
rv = controller->DoCommand(cmd);
|
|
break;
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
aEvent->mSucceeded = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
EventStateManager::DoContentCommandScrollEvent(
|
|
WidgetContentCommandEvent* aEvent)
|
|
{
|
|
NS_ENSURE_TRUE(mPresContext, NS_ERROR_NOT_AVAILABLE);
|
|
nsIPresShell* ps = mPresContext->GetPresShell();
|
|
NS_ENSURE_TRUE(ps, NS_ERROR_NOT_AVAILABLE);
|
|
NS_ENSURE_TRUE(aEvent->mScroll.mAmount != 0, NS_ERROR_INVALID_ARG);
|
|
|
|
nsIScrollableFrame::ScrollUnit scrollUnit;
|
|
switch (aEvent->mScroll.mUnit) {
|
|
case WidgetContentCommandEvent::eCmdScrollUnit_Line:
|
|
scrollUnit = nsIScrollableFrame::LINES;
|
|
break;
|
|
case WidgetContentCommandEvent::eCmdScrollUnit_Page:
|
|
scrollUnit = nsIScrollableFrame::PAGES;
|
|
break;
|
|
case WidgetContentCommandEvent::eCmdScrollUnit_Whole:
|
|
scrollUnit = nsIScrollableFrame::WHOLE;
|
|
break;
|
|
default:
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
aEvent->mSucceeded = true;
|
|
|
|
nsIScrollableFrame* sf =
|
|
ps->GetScrollableFrameToScroll(nsIPresShell::eEither);
|
|
aEvent->mIsEnabled = sf ?
|
|
(aEvent->mScroll.mIsHorizontal ?
|
|
WheelHandlingUtils::CanScrollOn(sf, aEvent->mScroll.mAmount, 0) :
|
|
WheelHandlingUtils::CanScrollOn(sf, 0, aEvent->mScroll.mAmount)) : false;
|
|
|
|
if (!aEvent->mIsEnabled || aEvent->mOnlyEnabledCheck) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIntPoint pt(0, 0);
|
|
if (aEvent->mScroll.mIsHorizontal) {
|
|
pt.x = aEvent->mScroll.mAmount;
|
|
} else {
|
|
pt.y = aEvent->mScroll.mAmount;
|
|
}
|
|
|
|
// The caller may want synchronous scrolling.
|
|
sf->ScrollBy(pt, scrollUnit, nsIScrollableFrame::INSTANT);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
EventStateManager::SetActiveManager(EventStateManager* aNewESM,
|
|
nsIContent* aContent)
|
|
{
|
|
if (sActiveESM && aNewESM != sActiveESM) {
|
|
sActiveESM->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
|
|
}
|
|
sActiveESM = aNewESM;
|
|
if (sActiveESM && aContent) {
|
|
sActiveESM->SetContentState(aContent, NS_EVENT_STATE_ACTIVE);
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::ClearGlobalActiveContent(EventStateManager* aClearer)
|
|
{
|
|
if (aClearer) {
|
|
aClearer->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
|
|
if (sDragOverContent) {
|
|
aClearer->SetContentState(nullptr, NS_EVENT_STATE_DRAGOVER);
|
|
}
|
|
}
|
|
if (sActiveESM && aClearer != sActiveESM) {
|
|
sActiveESM->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
|
|
}
|
|
sActiveESM = nullptr;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* mozilla::EventStateManager::DeltaAccumulator */
|
|
/******************************************************************/
|
|
|
|
void
|
|
EventStateManager::DeltaAccumulator::InitLineOrPageDelta(
|
|
nsIFrame* aTargetFrame,
|
|
EventStateManager* aESM,
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
MOZ_ASSERT(aESM);
|
|
MOZ_ASSERT(aEvent);
|
|
|
|
// Reset if the previous wheel event is too old.
|
|
if (!mLastTime.IsNull()) {
|
|
TimeDuration duration = TimeStamp::Now() - mLastTime;
|
|
if (duration.ToMilliseconds() > WheelTransaction::GetTimeoutTime()) {
|
|
Reset();
|
|
}
|
|
}
|
|
// If we have accumulated delta, we may need to reset it.
|
|
if (IsInTransaction()) {
|
|
// If wheel event type is changed, reset the values.
|
|
if (mHandlingDeltaMode != aEvent->mDeltaMode ||
|
|
mIsNoLineOrPageDeltaDevice != aEvent->mIsNoLineOrPageDelta) {
|
|
Reset();
|
|
} else {
|
|
// If the delta direction is changed, we should reset only the
|
|
// accumulated values.
|
|
if (mX && aEvent->mDeltaX && ((aEvent->mDeltaX > 0.0) != (mX > 0.0))) {
|
|
mX = mPendingScrollAmountX = 0.0;
|
|
}
|
|
if (mY && aEvent->mDeltaY && ((aEvent->mDeltaY > 0.0) != (mY > 0.0))) {
|
|
mY = mPendingScrollAmountY = 0.0;
|
|
}
|
|
}
|
|
}
|
|
|
|
mHandlingDeltaMode = aEvent->mDeltaMode;
|
|
mIsNoLineOrPageDeltaDevice = aEvent->mIsNoLineOrPageDelta;
|
|
|
|
// If it's handling neither a device that does not provide line or page deltas
|
|
// nor delta values multiplied by prefs, we must not modify lineOrPageDelta
|
|
// values.
|
|
if (!mIsNoLineOrPageDeltaDevice &&
|
|
!EventStateManager::WheelPrefs::GetInstance()->
|
|
NeedToComputeLineOrPageDelta(aEvent)) {
|
|
// Set the delta values to mX and mY. They would be used when above block
|
|
// resets mX/mY/mPendingScrollAmountX/mPendingScrollAmountY if the direction
|
|
// is changed.
|
|
// NOTE: We shouldn't accumulate the delta values, it might could cause
|
|
// overflow even though it's not a realistic situation.
|
|
if (aEvent->mDeltaX) {
|
|
mX = aEvent->mDeltaX;
|
|
}
|
|
if (aEvent->mDeltaY) {
|
|
mY = aEvent->mDeltaY;
|
|
}
|
|
mLastTime = TimeStamp::Now();
|
|
return;
|
|
}
|
|
|
|
mX += aEvent->mDeltaX;
|
|
mY += aEvent->mDeltaY;
|
|
|
|
if (mHandlingDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL) {
|
|
// Records pixel delta values and init mLineOrPageDeltaX and
|
|
// mLineOrPageDeltaY for wheel events which are caused by pixel only
|
|
// devices. Ignore mouse wheel transaction for computing this. The
|
|
// lineOrPageDelta values will be used by dispatching legacy
|
|
// eMouseScrollEventClass (DOMMouseScroll) but not be used for scrolling
|
|
// of default action. The transaction should be used only for the default
|
|
// action.
|
|
nsIFrame* frame =
|
|
aESM->ComputeScrollTarget(aTargetFrame, aEvent,
|
|
COMPUTE_LEGACY_MOUSE_SCROLL_EVENT_TARGET);
|
|
nsPresContext* pc =
|
|
frame ? frame->PresContext() : aTargetFrame->PresContext();
|
|
nsIScrollableFrame* scrollTarget = do_QueryFrame(frame);
|
|
nsSize scrollAmount = aESM->GetScrollAmount(pc, aEvent, scrollTarget);
|
|
nsIntSize scrollAmountInCSSPixels(
|
|
nsPresContext::AppUnitsToIntCSSPixels(scrollAmount.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(scrollAmount.height));
|
|
|
|
aEvent->mLineOrPageDeltaX = RoundDown(mX) / scrollAmountInCSSPixels.width;
|
|
aEvent->mLineOrPageDeltaY = RoundDown(mY) / scrollAmountInCSSPixels.height;
|
|
|
|
mX -= aEvent->mLineOrPageDeltaX * scrollAmountInCSSPixels.width;
|
|
mY -= aEvent->mLineOrPageDeltaY * scrollAmountInCSSPixels.height;
|
|
} else {
|
|
aEvent->mLineOrPageDeltaX = RoundDown(mX);
|
|
aEvent->mLineOrPageDeltaY = RoundDown(mY);
|
|
mX -= aEvent->mLineOrPageDeltaX;
|
|
mY -= aEvent->mLineOrPageDeltaY;
|
|
}
|
|
|
|
mLastTime = TimeStamp::Now();
|
|
}
|
|
|
|
void
|
|
EventStateManager::DeltaAccumulator::Reset()
|
|
{
|
|
mX = mY = 0.0;
|
|
mPendingScrollAmountX = mPendingScrollAmountY = 0.0;
|
|
mHandlingDeltaMode = UINT32_MAX;
|
|
mIsNoLineOrPageDeltaDevice = false;
|
|
}
|
|
|
|
nsIntPoint
|
|
EventStateManager::DeltaAccumulator::ComputeScrollAmountForDefaultAction(
|
|
WidgetWheelEvent* aEvent,
|
|
const nsIntSize& aScrollAmountInDevPixels)
|
|
{
|
|
MOZ_ASSERT(aEvent);
|
|
|
|
// If the wheel event is line scroll and the delta value is computed from
|
|
// system settings, allow to override the system speed.
|
|
bool allowScrollSpeedOverride =
|
|
(!aEvent->mCustomizedByUserPrefs &&
|
|
aEvent->mDeltaMode == nsIDOMWheelEvent::DOM_DELTA_LINE);
|
|
DeltaValues acceleratedDelta =
|
|
WheelTransaction::AccelerateWheelDelta(aEvent, allowScrollSpeedOverride);
|
|
|
|
nsIntPoint result(0, 0);
|
|
if (aEvent->mDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL) {
|
|
mPendingScrollAmountX += acceleratedDelta.deltaX;
|
|
mPendingScrollAmountY += acceleratedDelta.deltaY;
|
|
} else {
|
|
mPendingScrollAmountX +=
|
|
aScrollAmountInDevPixels.width * acceleratedDelta.deltaX;
|
|
mPendingScrollAmountY +=
|
|
aScrollAmountInDevPixels.height * acceleratedDelta.deltaY;
|
|
}
|
|
result.x = RoundDown(mPendingScrollAmountX);
|
|
result.y = RoundDown(mPendingScrollAmountY);
|
|
mPendingScrollAmountX -= result.x;
|
|
mPendingScrollAmountY -= result.y;
|
|
|
|
return result;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* mozilla::EventStateManager::WheelPrefs */
|
|
/******************************************************************/
|
|
|
|
// static
|
|
EventStateManager::WheelPrefs*
|
|
EventStateManager::WheelPrefs::GetInstance()
|
|
{
|
|
if (!sInstance) {
|
|
sInstance = new WheelPrefs();
|
|
}
|
|
return sInstance;
|
|
}
|
|
|
|
// static
|
|
void
|
|
EventStateManager::WheelPrefs::Shutdown()
|
|
{
|
|
delete sInstance;
|
|
sInstance = nullptr;
|
|
}
|
|
|
|
// static
|
|
void
|
|
EventStateManager::WheelPrefs::OnPrefChanged(const char* aPrefName,
|
|
void* aClosure)
|
|
{
|
|
// forget all prefs, it's not problem for performance.
|
|
sInstance->Reset();
|
|
DeltaAccumulator::GetInstance()->Reset();
|
|
}
|
|
|
|
EventStateManager::WheelPrefs::WheelPrefs()
|
|
{
|
|
Reset();
|
|
Preferences::RegisterPrefixCallback(OnPrefChanged, "mousewheel.");
|
|
Preferences::AddBoolVarCache(&sWheelEventsEnabledOnPlugins,
|
|
"plugin.mousewheel.enabled",
|
|
true);
|
|
}
|
|
|
|
EventStateManager::WheelPrefs::~WheelPrefs()
|
|
{
|
|
Preferences::UnregisterPrefixCallback(OnPrefChanged, "mousewheel.");
|
|
}
|
|
|
|
void
|
|
EventStateManager::WheelPrefs::Reset()
|
|
{
|
|
memset(mInit, 0, sizeof(mInit));
|
|
|
|
}
|
|
|
|
EventStateManager::WheelPrefs::Index
|
|
EventStateManager::WheelPrefs::GetIndexFor(WidgetWheelEvent* aEvent)
|
|
{
|
|
if (!aEvent) {
|
|
return INDEX_DEFAULT;
|
|
}
|
|
|
|
Modifiers modifiers =
|
|
(aEvent->mModifiers & (MODIFIER_ALT |
|
|
MODIFIER_CONTROL |
|
|
MODIFIER_META |
|
|
MODIFIER_SHIFT |
|
|
MODIFIER_OS));
|
|
|
|
switch (modifiers) {
|
|
case MODIFIER_ALT:
|
|
return INDEX_ALT;
|
|
case MODIFIER_CONTROL:
|
|
return INDEX_CONTROL;
|
|
case MODIFIER_META:
|
|
return INDEX_META;
|
|
case MODIFIER_SHIFT:
|
|
return INDEX_SHIFT;
|
|
case MODIFIER_OS:
|
|
return INDEX_OS;
|
|
default:
|
|
// If two or more modifier keys are pressed, we should use default
|
|
// settings.
|
|
return INDEX_DEFAULT;
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::WheelPrefs::GetBasePrefName(
|
|
EventStateManager::WheelPrefs::Index aIndex,
|
|
nsACString& aBasePrefName)
|
|
{
|
|
aBasePrefName.AssignLiteral("mousewheel.");
|
|
switch (aIndex) {
|
|
case INDEX_ALT:
|
|
aBasePrefName.AppendLiteral("with_alt.");
|
|
break;
|
|
case INDEX_CONTROL:
|
|
aBasePrefName.AppendLiteral("with_control.");
|
|
break;
|
|
case INDEX_META:
|
|
aBasePrefName.AppendLiteral("with_meta.");
|
|
break;
|
|
case INDEX_SHIFT:
|
|
aBasePrefName.AppendLiteral("with_shift.");
|
|
break;
|
|
case INDEX_OS:
|
|
aBasePrefName.AppendLiteral("with_win.");
|
|
break;
|
|
case INDEX_DEFAULT:
|
|
default:
|
|
aBasePrefName.AppendLiteral("default.");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
EventStateManager::WheelPrefs::Init(EventStateManager::WheelPrefs::Index aIndex)
|
|
{
|
|
if (mInit[aIndex]) {
|
|
return;
|
|
}
|
|
mInit[aIndex] = true;
|
|
|
|
nsAutoCString basePrefName;
|
|
GetBasePrefName(aIndex, basePrefName);
|
|
|
|
nsAutoCString prefNameX(basePrefName);
|
|
prefNameX.AppendLiteral("delta_multiplier_x");
|
|
mMultiplierX[aIndex] =
|
|
static_cast<double>(Preferences::GetInt(prefNameX.get(), 100)) / 100;
|
|
|
|
nsAutoCString prefNameY(basePrefName);
|
|
prefNameY.AppendLiteral("delta_multiplier_y");
|
|
mMultiplierY[aIndex] =
|
|
static_cast<double>(Preferences::GetInt(prefNameY.get(), 100)) / 100;
|
|
|
|
nsAutoCString prefNameZ(basePrefName);
|
|
prefNameZ.AppendLiteral("delta_multiplier_z");
|
|
mMultiplierZ[aIndex] =
|
|
static_cast<double>(Preferences::GetInt(prefNameZ.get(), 100)) / 100;
|
|
|
|
nsAutoCString prefNameAction(basePrefName);
|
|
prefNameAction.AppendLiteral("action");
|
|
int32_t action = Preferences::GetInt(prefNameAction.get(), ACTION_SCROLL);
|
|
if (action < int32_t(ACTION_NONE) || action > int32_t(ACTION_LAST)) {
|
|
NS_WARNING("Unsupported action pref value, replaced with 'Scroll'.");
|
|
action = ACTION_SCROLL;
|
|
}
|
|
mActions[aIndex] = static_cast<Action>(action);
|
|
|
|
// Compute action values overridden by .override_x pref.
|
|
// At present, override is possible only for the x-direction
|
|
// because this pref is introduced mainly for tilt wheels.
|
|
prefNameAction.AppendLiteral(".override_x");
|
|
int32_t actionOverrideX = Preferences::GetInt(prefNameAction.get(), -1);
|
|
if (actionOverrideX < -1 || actionOverrideX > int32_t(ACTION_LAST)) {
|
|
NS_WARNING("Unsupported action override pref value, didn't override.");
|
|
actionOverrideX = -1;
|
|
}
|
|
mOverriddenActionsX[aIndex] = (actionOverrideX == -1)
|
|
? static_cast<Action>(action)
|
|
: static_cast<Action>(actionOverrideX);
|
|
}
|
|
|
|
void
|
|
EventStateManager::WheelPrefs::ApplyUserPrefsToDelta(WidgetWheelEvent* aEvent)
|
|
{
|
|
if (aEvent->mCustomizedByUserPrefs) {
|
|
return;
|
|
}
|
|
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
aEvent->mDeltaX *= mMultiplierX[index];
|
|
aEvent->mDeltaY *= mMultiplierY[index];
|
|
aEvent->mDeltaZ *= mMultiplierZ[index];
|
|
|
|
// If the multiplier is 1.0 or -1.0, i.e., it doesn't change the absolute
|
|
// value, we should use lineOrPageDelta values which were set by widget.
|
|
// Otherwise, we need to compute them from accumulated delta values.
|
|
if (!NeedToComputeLineOrPageDelta(aEvent)) {
|
|
aEvent->mLineOrPageDeltaX *= static_cast<int32_t>(mMultiplierX[index]);
|
|
aEvent->mLineOrPageDeltaY *= static_cast<int32_t>(mMultiplierY[index]);
|
|
} else {
|
|
aEvent->mLineOrPageDeltaX = 0;
|
|
aEvent->mLineOrPageDeltaY = 0;
|
|
}
|
|
|
|
aEvent->mCustomizedByUserPrefs =
|
|
((mMultiplierX[index] != 1.0) || (mMultiplierY[index] != 1.0) ||
|
|
(mMultiplierZ[index] != 1.0));
|
|
}
|
|
|
|
void
|
|
EventStateManager::WheelPrefs::CancelApplyingUserPrefsFromOverflowDelta(
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
// XXX If the multiplier pref value is negative, the scroll direction was
|
|
// changed and caused to scroll different direction. In such case,
|
|
// this method reverts the sign of overflowDelta. Does it make widget
|
|
// happy? Although, widget can know the pref applied delta values by
|
|
// referrencing the deltaX and deltaY of the event.
|
|
|
|
if (mMultiplierX[index]) {
|
|
aEvent->mOverflowDeltaX /= mMultiplierX[index];
|
|
}
|
|
if (mMultiplierY[index]) {
|
|
aEvent->mOverflowDeltaY /= mMultiplierY[index];
|
|
}
|
|
}
|
|
|
|
EventStateManager::WheelPrefs::Action
|
|
EventStateManager::WheelPrefs::ComputeActionFor(WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
bool deltaXPreferred =
|
|
(Abs(aEvent->mDeltaX) > Abs(aEvent->mDeltaY) &&
|
|
Abs(aEvent->mDeltaX) > Abs(aEvent->mDeltaZ));
|
|
Action* actions = deltaXPreferred ? mOverriddenActionsX : mActions;
|
|
if (actions[index] == ACTION_NONE || actions[index] == ACTION_SCROLL) {
|
|
return actions[index];
|
|
}
|
|
|
|
// Momentum events shouldn't run special actions.
|
|
if (aEvent->mIsMomentum) {
|
|
// Use the default action. Note that user might kill the wheel scrolling.
|
|
Init(INDEX_DEFAULT);
|
|
return (actions[INDEX_DEFAULT] == ACTION_SCROLL) ? ACTION_SCROLL :
|
|
ACTION_NONE;
|
|
}
|
|
|
|
return actions[index];
|
|
}
|
|
|
|
bool
|
|
EventStateManager::WheelPrefs::NeedToComputeLineOrPageDelta(
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
return (mMultiplierX[index] != 1.0 && mMultiplierX[index] != -1.0) ||
|
|
(mMultiplierY[index] != 1.0 && mMultiplierY[index] != -1.0);
|
|
}
|
|
|
|
void
|
|
EventStateManager::WheelPrefs::GetUserPrefsForEvent(WidgetWheelEvent* aEvent,
|
|
double* aOutMultiplierX,
|
|
double* aOutMultiplierY)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
*aOutMultiplierX = mMultiplierX[index];
|
|
*aOutMultiplierY = mMultiplierY[index];
|
|
}
|
|
|
|
// static
|
|
bool
|
|
EventStateManager::WheelPrefs::WheelEventsEnabledOnPlugins()
|
|
{
|
|
if (!sInstance) {
|
|
GetInstance(); // initializing sWheelEventsEnabledOnPlugins
|
|
}
|
|
return sWheelEventsEnabledOnPlugins;
|
|
}
|
|
|
|
bool
|
|
EventStateManager::WheelEventIsScrollAction(WidgetWheelEvent* aEvent)
|
|
{
|
|
return aEvent->mMessage == eWheel &&
|
|
WheelPrefs::GetInstance()->ComputeActionFor(aEvent) == WheelPrefs::ACTION_SCROLL;
|
|
}
|
|
|
|
void
|
|
EventStateManager::GetUserPrefsForWheelEvent(WidgetWheelEvent* aEvent,
|
|
double* aOutMultiplierX,
|
|
double* aOutMultiplierY)
|
|
{
|
|
WheelPrefs::GetInstance()->GetUserPrefsForEvent(
|
|
aEvent, aOutMultiplierX, aOutMultiplierY);
|
|
}
|
|
|
|
bool
|
|
EventStateManager::WheelPrefs::IsOverOnePageScrollAllowedX(
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
return Abs(mMultiplierX[index]) >=
|
|
MIN_MULTIPLIER_VALUE_ALLOWING_OVER_ONE_PAGE_SCROLL;
|
|
}
|
|
|
|
bool
|
|
EventStateManager::WheelPrefs::IsOverOnePageScrollAllowedY(
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
return Abs(mMultiplierY[index]) >=
|
|
MIN_MULTIPLIER_VALUE_ALLOWING_OVER_ONE_PAGE_SCROLL;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* mozilla::EventStateManager::Prefs */
|
|
/******************************************************************/
|
|
|
|
bool EventStateManager::Prefs::sKeyCausesActivation = true;
|
|
bool EventStateManager::Prefs::sClickHoldContextMenu = false;
|
|
|
|
// static
|
|
void
|
|
EventStateManager::Prefs::Init()
|
|
{
|
|
DebugOnly<nsresult> rv = Preferences::RegisterCallback(OnChange, "dom.popup_allowed_events");
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"dom.popup_allowed_events\"");
|
|
|
|
static bool sPrefsAlreadyCached = false;
|
|
if (sPrefsAlreadyCached) {
|
|
return;
|
|
}
|
|
|
|
rv = Preferences::AddBoolVarCache(&sKeyCausesActivation,
|
|
"accessibility.accesskeycausesactivation",
|
|
sKeyCausesActivation);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"accessibility.accesskeycausesactivation\"");
|
|
rv = Preferences::AddBoolVarCache(&sClickHoldContextMenu,
|
|
"ui.click_hold_context_menus",
|
|
sClickHoldContextMenu);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"ui.click_hold_context_menus\"");
|
|
sPrefsAlreadyCached = true;
|
|
}
|
|
|
|
// static
|
|
void
|
|
EventStateManager::Prefs::OnChange(const char* aPrefName, void*)
|
|
{
|
|
nsDependentCString prefName(aPrefName);
|
|
if (prefName.EqualsLiteral("dom.popup_allowed_events")) {
|
|
Event::PopupAllowedEventsChanged();
|
|
}
|
|
}
|
|
|
|
// static
|
|
void
|
|
EventStateManager::Prefs::Shutdown()
|
|
{
|
|
Preferences::UnregisterCallback(OnChange, "dom.popup_allowed_events");
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* mozilla::AutoHandlingUserInputStatePusher */
|
|
/******************************************************************/
|
|
|
|
AutoHandlingUserInputStatePusher::AutoHandlingUserInputStatePusher(
|
|
bool aIsHandlingUserInput,
|
|
WidgetEvent* aEvent,
|
|
nsIDocument* aDocument) :
|
|
mIsHandlingUserInput(aIsHandlingUserInput),
|
|
mIsMouseDown(aEvent && aEvent->mMessage == eMouseDown),
|
|
mResetFMMouseButtonHandlingState(false)
|
|
{
|
|
if (!aIsHandlingUserInput) {
|
|
return;
|
|
}
|
|
EventStateManager::StartHandlingUserInput();
|
|
if (mIsMouseDown) {
|
|
nsIPresShell::SetCapturingContent(nullptr, 0);
|
|
nsIPresShell::AllowMouseCapture(true);
|
|
}
|
|
if (!aDocument || !aEvent || !aEvent->IsTrusted()) {
|
|
return;
|
|
}
|
|
mResetFMMouseButtonHandlingState =
|
|
(aEvent->mMessage == eMouseDown || aEvent->mMessage == eMouseUp);
|
|
if (mResetFMMouseButtonHandlingState) {
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE_VOID(fm);
|
|
// If it's in modal state, mouse button event handling may be nested.
|
|
// E.g., a modal dialog is opened at mousedown or mouseup event handler
|
|
// and the dialog is clicked. Therefore, we should store current
|
|
// mouse button event handling document if nsFocusManager already has it.
|
|
mMouseButtonEventHandlingDocument =
|
|
fm->SetMouseButtonHandlingDocument(aDocument);
|
|
}
|
|
}
|
|
|
|
AutoHandlingUserInputStatePusher::~AutoHandlingUserInputStatePusher()
|
|
{
|
|
if (!mIsHandlingUserInput) {
|
|
return;
|
|
}
|
|
EventStateManager::StopHandlingUserInput();
|
|
if (mIsMouseDown) {
|
|
nsIPresShell::AllowMouseCapture(false);
|
|
}
|
|
if (mResetFMMouseButtonHandlingState) {
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE_VOID(fm);
|
|
nsCOMPtr<nsIDocument> handlingDocument =
|
|
fm->SetMouseButtonHandlingDocument(mMouseButtonEventHandlingDocument);
|
|
}
|
|
}
|
|
|
|
} // namespace mozilla
|