зеркало из https://github.com/mozilla/gecko-dev.git
4096 строки
150 KiB
C++
4096 строки
150 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/dom/BrowserParent.h"
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#include "nsFocusManager.h"
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#include "ChildIterator.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsGkAtoms.h"
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#include "nsGlobalWindow.h"
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#include "nsContentUtils.h"
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#include "ContentParent.h"
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#include "nsPIDOMWindow.h"
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#include "nsIDOMChromeWindow.h"
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#include "nsIDocShell.h"
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#include "nsIDocShellTreeOwner.h"
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#include "nsIFormControl.h"
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#include "nsLayoutUtils.h"
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#include "nsFrameTraversal.h"
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#include "nsIWebNavigation.h"
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#include "nsCaret.h"
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#include "nsIBaseWindow.h"
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#include "nsIXULWindow.h"
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#include "nsViewManager.h"
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#include "nsFrameSelection.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/Selection.h"
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#include "nsXULPopupManager.h"
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#include "nsMenuPopupFrame.h"
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#include "nsIScriptObjectPrincipal.h"
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#include "nsIPrincipal.h"
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#include "nsIObserverService.h"
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#include "nsIObjectFrame.h"
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#include "nsBindingManager.h"
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#include "BrowserChild.h"
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#include "nsFrameLoader.h"
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#include "nsHTMLDocument.h"
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#include "nsNumberControlFrame.h"
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#include "nsNetUtil.h"
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#include "nsRange.h"
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#include "mozilla/AccessibleCaretEventHub.h"
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#include "mozilla/ContentEvents.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/ElementBinding.h"
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#include "mozilla/dom/HTMLImageElement.h"
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#include "mozilla/dom/HTMLInputElement.h"
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#include "mozilla/dom/HTMLSlotElement.h"
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#include "mozilla/dom/BrowserBridgeChild.h"
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#include "mozilla/dom/Text.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/HTMLEditor.h"
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#include "mozilla/IMEStateManager.h"
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#include "mozilla/LookAndFeel.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/Services.h"
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#include "mozilla/Unused.h"
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#include <algorithm>
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#ifdef MOZ_XUL
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# include "nsIDOMXULMenuListElement.h"
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#endif
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#ifdef ACCESSIBILITY
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# include "nsAccessibilityService.h"
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#endif
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#ifndef XP_MACOSX
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# include "nsIScriptError.h"
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#endif
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::widget;
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// Two types of focus pr logging are available:
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// 'Focus' for normal focus manager calls
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// 'FocusNavigation' for tab and document navigation
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LazyLogModule gFocusLog("Focus");
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LazyLogModule gFocusNavigationLog("FocusNavigation");
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#define LOGFOCUS(args) MOZ_LOG(gFocusLog, mozilla::LogLevel::Debug, args)
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#define LOGFOCUSNAVIGATION(args) \
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MOZ_LOG(gFocusNavigationLog, mozilla::LogLevel::Debug, args)
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#define LOGTAG(log, format, content) \
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if (MOZ_LOG_TEST(log, LogLevel::Debug)) { \
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nsAutoCString tag(NS_LITERAL_CSTRING("(none)")); \
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if (content) { \
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content->NodeInfo()->NameAtom()->ToUTF8String(tag); \
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} \
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MOZ_LOG(log, LogLevel::Debug, (format, tag.get())); \
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}
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#define LOGCONTENT(format, content) LOGTAG(gFocusLog, format, content)
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#define LOGCONTENTNAVIGATION(format, content) \
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LOGTAG(gFocusNavigationLog, format, content)
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struct nsDelayedBlurOrFocusEvent {
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nsDelayedBlurOrFocusEvent(EventMessage aEventMessage, PresShell* aPresShell,
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Document* aDocument, EventTarget* aTarget,
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EventTarget* aRelatedTarget)
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: mPresShell(aPresShell),
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mDocument(aDocument),
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mTarget(aTarget),
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mEventMessage(aEventMessage),
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mRelatedTarget(aRelatedTarget) {}
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nsDelayedBlurOrFocusEvent(const nsDelayedBlurOrFocusEvent& aOther)
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: mPresShell(aOther.mPresShell),
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mDocument(aOther.mDocument),
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mTarget(aOther.mTarget),
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mEventMessage(aOther.mEventMessage) {}
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RefPtr<PresShell> mPresShell;
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nsCOMPtr<Document> mDocument;
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nsCOMPtr<EventTarget> mTarget;
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EventMessage mEventMessage;
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nsCOMPtr<EventTarget> mRelatedTarget;
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};
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inline void ImplCycleCollectionUnlink(nsDelayedBlurOrFocusEvent& aField) {
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aField.mPresShell = nullptr;
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aField.mDocument = nullptr;
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aField.mTarget = nullptr;
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aField.mRelatedTarget = nullptr;
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}
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inline void ImplCycleCollectionTraverse(
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nsCycleCollectionTraversalCallback& aCallback,
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nsDelayedBlurOrFocusEvent& aField, const char* aName, uint32_t aFlags = 0) {
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CycleCollectionNoteChild(
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aCallback, static_cast<nsIDocumentObserver*>(aField.mPresShell.get()),
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aName, aFlags);
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CycleCollectionNoteChild(aCallback, aField.mDocument.get(), aName, aFlags);
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CycleCollectionNoteChild(aCallback, aField.mTarget.get(), aName, aFlags);
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CycleCollectionNoteChild(aCallback, aField.mRelatedTarget.get(), aName,
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aFlags);
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}
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsFocusManager)
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NS_INTERFACE_MAP_ENTRY(nsIFocusManager)
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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_ENTRY_AMBIGUOUS(nsISupports, nsIFocusManager)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsFocusManager)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsFocusManager)
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NS_IMPL_CYCLE_COLLECTION(nsFocusManager, mActiveWindow, mFocusedWindow,
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mFocusedElement, mFirstBlurEvent, mFirstFocusEvent,
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mWindowBeingLowered, mDelayedBlurFocusEvents,
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mMouseButtonEventHandlingDocument)
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nsFocusManager* nsFocusManager::sInstance = nullptr;
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bool nsFocusManager::sMouseFocusesFormControl = false;
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bool nsFocusManager::sTestMode = false;
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static const char* kObservedPrefs[] = {
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"accessibility.browsewithcaret", "accessibility.tabfocus_applies_to_xul",
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"accessibility.mouse_focuses_formcontrol", "focusmanager.testmode",
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nullptr};
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nsFocusManager::nsFocusManager() : mEventHandlingNeedsFlush(false) {}
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nsFocusManager::~nsFocusManager() {
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Preferences::UnregisterCallbacks(
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PREF_CHANGE_METHOD(nsFocusManager::PrefChanged), kObservedPrefs, this);
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->RemoveObserver(this, "xpcom-shutdown");
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}
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}
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// static
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nsresult nsFocusManager::Init() {
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nsFocusManager* fm = new nsFocusManager();
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NS_ADDREF(fm);
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sInstance = fm;
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nsIContent::sTabFocusModelAppliesToXUL =
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Preferences::GetBool("accessibility.tabfocus_applies_to_xul",
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nsIContent::sTabFocusModelAppliesToXUL);
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sMouseFocusesFormControl =
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Preferences::GetBool("accessibility.mouse_focuses_formcontrol", false);
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sTestMode = Preferences::GetBool("focusmanager.testmode", false);
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Preferences::RegisterCallbacks(
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PREF_CHANGE_METHOD(nsFocusManager::PrefChanged), kObservedPrefs, fm);
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->AddObserver(fm, "xpcom-shutdown", true);
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}
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return NS_OK;
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}
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// static
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void nsFocusManager::Shutdown() { NS_IF_RELEASE(sInstance); }
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void nsFocusManager::PrefChanged(const char* aPref) {
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nsDependentCString pref(aPref);
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if (pref.EqualsLiteral("accessibility.browsewithcaret")) {
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UpdateCaretForCaretBrowsingMode();
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} else if (pref.EqualsLiteral("accessibility.tabfocus_applies_to_xul")) {
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nsIContent::sTabFocusModelAppliesToXUL =
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Preferences::GetBool("accessibility.tabfocus_applies_to_xul",
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nsIContent::sTabFocusModelAppliesToXUL);
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} else if (pref.EqualsLiteral("accessibility.mouse_focuses_formcontrol")) {
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sMouseFocusesFormControl =
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Preferences::GetBool("accessibility.mouse_focuses_formcontrol", false);
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} else if (pref.EqualsLiteral("focusmanager.testmode")) {
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sTestMode = Preferences::GetBool("focusmanager.testmode", false);
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}
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}
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NS_IMETHODIMP
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nsFocusManager::Observe(nsISupports* aSubject, const char* aTopic,
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const char16_t* aData) {
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if (!nsCRT::strcmp(aTopic, "xpcom-shutdown")) {
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mActiveWindow = nullptr;
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mFocusedWindow = nullptr;
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mFocusedElement = nullptr;
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mFirstBlurEvent = nullptr;
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mFirstFocusEvent = nullptr;
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mWindowBeingLowered = nullptr;
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mDelayedBlurFocusEvents.Clear();
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mMouseButtonEventHandlingDocument = nullptr;
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}
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return NS_OK;
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}
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// given a frame content node, retrieve the nsIDOMWindow displayed in it
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static nsPIDOMWindowOuter* GetContentWindow(nsIContent* aContent) {
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Document* doc = aContent->GetComposedDoc();
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if (doc) {
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Document* subdoc = doc->GetSubDocumentFor(aContent);
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if (subdoc) return subdoc->GetWindow();
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}
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return nullptr;
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}
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bool nsFocusManager::IsFocused(nsIContent* aContent) {
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if (!aContent || !mFocusedElement) {
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return false;
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}
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return aContent == mFocusedElement;
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}
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bool nsFocusManager::IsTestMode() { return sTestMode; }
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// get the current window for the given content node
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static nsPIDOMWindowOuter* GetCurrentWindow(nsIContent* aContent) {
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Document* doc = aContent->GetComposedDoc();
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return doc ? doc->GetWindow() : nullptr;
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}
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// static
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Element* nsFocusManager::GetFocusedDescendant(
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nsPIDOMWindowOuter* aWindow, SearchRange aSearchRange,
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nsPIDOMWindowOuter** aFocusedWindow) {
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NS_ENSURE_TRUE(aWindow, nullptr);
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*aFocusedWindow = nullptr;
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Element* currentElement = nullptr;
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nsPIDOMWindowOuter* window = aWindow;
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for (;;) {
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*aFocusedWindow = window;
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currentElement = window->GetFocusedElement();
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if (!currentElement || aSearchRange == eOnlyCurrentWindow) {
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break;
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}
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window = GetContentWindow(currentElement);
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if (!window) {
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break;
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}
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if (aSearchRange == eIncludeAllDescendants) {
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continue;
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}
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MOZ_ASSERT(aSearchRange == eIncludeVisibleDescendants);
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// If the child window doesn't have PresShell, it means the window is
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// invisible.
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nsIDocShell* docShell = window->GetDocShell();
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if (!docShell) {
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break;
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}
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if (!docShell->GetPresShell()) {
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break;
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}
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}
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NS_IF_ADDREF(*aFocusedWindow);
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return currentElement;
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}
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// static
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Element* nsFocusManager::GetRedirectedFocus(nsIContent* aContent) {
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// For input number, redirect focus to our anonymous text control.
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if (aContent->IsHTMLElement(nsGkAtoms::input)) {
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bool typeIsNumber =
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static_cast<dom::HTMLInputElement*>(aContent)->ControlType() ==
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NS_FORM_INPUT_NUMBER;
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if (typeIsNumber) {
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nsNumberControlFrame* numberControlFrame =
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do_QueryFrame(aContent->GetPrimaryFrame());
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if (numberControlFrame) {
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HTMLInputElement* textControl =
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numberControlFrame->GetAnonTextControl();
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return textControl;
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}
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}
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}
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#ifdef MOZ_XUL
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if (aContent->IsXULElement()) {
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if (aContent->IsXULElement(nsGkAtoms::textbox)) {
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return aContent->OwnerDoc()->GetAnonymousElementByAttribute(
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aContent, nsGkAtoms::anonid, NS_LITERAL_STRING("input"));
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} else {
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nsCOMPtr<nsIDOMXULMenuListElement> menulist =
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aContent->AsElement()->AsXULMenuList();
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if (menulist) {
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RefPtr<Element> inputField;
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menulist->GetInputField(getter_AddRefs(inputField));
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return inputField;
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}
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}
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}
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#endif
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return nullptr;
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}
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// static
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InputContextAction::Cause nsFocusManager::GetFocusMoveActionCause(
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uint32_t aFlags) {
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if (aFlags & nsIFocusManager::FLAG_BYTOUCH) {
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return InputContextAction::CAUSE_TOUCH;
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} else if (aFlags & nsIFocusManager::FLAG_BYMOUSE) {
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return InputContextAction::CAUSE_MOUSE;
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} else if (aFlags & nsIFocusManager::FLAG_BYKEY) {
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return InputContextAction::CAUSE_KEY;
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} else if (aFlags & nsIFocusManager::FLAG_BYLONGPRESS) {
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return InputContextAction::CAUSE_LONGPRESS;
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}
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return InputContextAction::CAUSE_UNKNOWN;
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}
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NS_IMETHODIMP
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nsFocusManager::GetActiveWindow(mozIDOMWindowProxy** aWindow) {
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NS_IF_ADDREF(*aWindow = mActiveWindow);
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return NS_OK;
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}
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void nsFocusManager::FocusWindow(nsPIDOMWindowOuter* aWindow) {
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if (RefPtr<nsFocusManager> fm = sInstance) {
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fm->SetFocusedWindow(aWindow);
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}
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}
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NS_IMETHODIMP
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nsFocusManager::SetActiveWindow(mozIDOMWindowProxy* aWindow) {
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NS_ENSURE_STATE(aWindow);
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// only top-level windows can be made active
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nsCOMPtr<nsPIDOMWindowOuter> piWindow = nsPIDOMWindowOuter::From(aWindow);
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NS_ENSURE_TRUE(piWindow == piWindow->GetPrivateRoot(), NS_ERROR_INVALID_ARG);
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RaiseWindow(piWindow);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::GetFocusedWindow(mozIDOMWindowProxy** aFocusedWindow) {
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NS_IF_ADDREF(*aFocusedWindow = mFocusedWindow);
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return NS_OK;
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}
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NS_IMETHODIMP nsFocusManager::SetFocusedWindow(
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mozIDOMWindowProxy* aWindowToFocus) {
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LOGFOCUS(("<<SetFocusedWindow begin>>"));
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nsCOMPtr<nsPIDOMWindowOuter> windowToFocus =
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nsPIDOMWindowOuter::From(aWindowToFocus);
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NS_ENSURE_TRUE(windowToFocus, NS_ERROR_FAILURE);
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nsCOMPtr<Element> frameElement = windowToFocus->GetFrameElementInternal();
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if (frameElement) {
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// pass false for aFocusChanged so that the caret does not get updated
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// and scrolling does not occur.
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SetFocusInner(frameElement, 0, false, true);
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} else {
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// this is a top-level window. If the window has a child frame focused,
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// clear the focus. Otherwise, focus should already be in this frame, or
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// already cleared. This ensures that focus will be in this frame and not
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// in a child.
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nsIContent* content = windowToFocus->GetFocusedElement();
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if (content) {
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if (nsCOMPtr<nsPIDOMWindowOuter> childWindow = GetContentWindow(content))
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ClearFocus(windowToFocus);
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}
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}
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nsCOMPtr<nsPIDOMWindowOuter> rootWindow = windowToFocus->GetPrivateRoot();
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if (rootWindow) RaiseWindow(rootWindow);
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LOGFOCUS(("<<SetFocusedWindow end>>"));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::GetFocusedElement(Element** aFocusedElement) {
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RefPtr<Element> focusedElement = mFocusedElement;
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focusedElement.forget(aFocusedElement);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::GetLastFocusMethod(mozIDOMWindowProxy* aWindow,
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uint32_t* aLastFocusMethod) {
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// the focus method is stored on the inner window
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nsCOMPtr<nsPIDOMWindowOuter> window;
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if (aWindow) {
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window = nsPIDOMWindowOuter::From(aWindow);
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}
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if (!window) window = mFocusedWindow;
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*aLastFocusMethod = window ? window->GetFocusMethod() : 0;
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NS_ASSERTION((*aLastFocusMethod & FOCUSMETHOD_MASK) == *aLastFocusMethod,
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"invalid focus method");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::SetFocus(Element* aElement, uint32_t aFlags) {
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LOGFOCUS(("<<SetFocus begin>>"));
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NS_ENSURE_ARG(aElement);
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SetFocusInner(aElement, aFlags, true, true);
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LOGFOCUS(("<<SetFocus end>>"));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::ElementIsFocusable(Element* aElement, uint32_t aFlags,
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bool* aIsFocusable) {
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NS_ENSURE_TRUE(aElement, NS_ERROR_INVALID_ARG);
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*aIsFocusable = FlushAndCheckIfFocusable(aElement, aFlags) != nullptr;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::MoveFocus(mozIDOMWindowProxy* aWindow, Element* aStartElement,
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uint32_t aType, uint32_t aFlags, Element** aElement) {
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*aElement = nullptr;
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LOGFOCUS(("<<MoveFocus begin Type: %d Flags: %x>>", aType, aFlags));
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if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug) && mFocusedWindow) {
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Document* doc = mFocusedWindow->GetExtantDoc();
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if (doc && doc->GetDocumentURI()) {
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LOGFOCUS((" Focused Window: %p %s", mFocusedWindow.get(),
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doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
|
|
LOGCONTENT(" Current Focus: %s", mFocusedElement.get());
|
|
|
|
// use FLAG_BYMOVEFOCUS when switching focus with MoveFocus unless one of
|
|
// the other focus methods is already set, or we're just moving to the root
|
|
// or caret position.
|
|
if (aType != MOVEFOCUS_ROOT && aType != MOVEFOCUS_CARET &&
|
|
(aFlags & FOCUSMETHOD_MASK) == 0) {
|
|
aFlags |= FLAG_BYMOVEFOCUS;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window;
|
|
if (aStartElement) {
|
|
window = GetCurrentWindow(aStartElement);
|
|
} else {
|
|
window = aWindow ? nsPIDOMWindowOuter::From(aWindow) : mFocusedWindow.get();
|
|
}
|
|
|
|
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
|
|
|
|
bool noParentTraversal = aFlags & FLAG_NOPARENTFRAME;
|
|
nsCOMPtr<nsIContent> newFocus;
|
|
nsresult rv =
|
|
DetermineElementToMoveFocus(window, aStartElement, aType,
|
|
noParentTraversal, getter_AddRefs(newFocus));
|
|
if (rv == NS_SUCCESS_DOM_NO_OPERATION) {
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
LOGCONTENTNAVIGATION("Element to be focused: %s", newFocus.get());
|
|
|
|
if (newFocus && newFocus->IsElement()) {
|
|
// for caret movement, pass false for the aFocusChanged argument,
|
|
// otherwise the caret will end up moving to the focus position. This
|
|
// would be a problem because the caret would move to the beginning of the
|
|
// focused link making it impossible to navigate the caret over a link.
|
|
SetFocusInner(MOZ_KnownLive(newFocus->AsElement()), aFlags,
|
|
aType != MOVEFOCUS_CARET, true);
|
|
*aElement = do_AddRef(newFocus->AsElement()).take();
|
|
} else if (aType == MOVEFOCUS_ROOT || aType == MOVEFOCUS_CARET) {
|
|
// no content was found, so clear the focus for these two types.
|
|
ClearFocus(window);
|
|
}
|
|
|
|
LOGFOCUS(("<<MoveFocus end>>"));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::ClearFocus(mozIDOMWindowProxy* aWindow) {
|
|
LOGFOCUS(("<<ClearFocus begin>>"));
|
|
|
|
// if the window to clear is the focused window or an ancestor of the
|
|
// focused window, then blur the existing focused content. Otherwise, the
|
|
// focus is somewhere else so just update the current node.
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (IsSameOrAncestor(window, mFocusedWindow)) {
|
|
bool isAncestor = (window != mFocusedWindow);
|
|
if (Blur(window, nullptr, isAncestor, true)) {
|
|
// if we are clearing the focus on an ancestor of the focused window,
|
|
// the ancestor will become the new focused window, so focus it
|
|
if (isAncestor) Focus(window, nullptr, 0, true, false, false, true);
|
|
}
|
|
} else {
|
|
window->SetFocusedElement(nullptr);
|
|
}
|
|
|
|
LOGFOCUS(("<<ClearFocus end>>"));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::GetFocusedElementForWindow(mozIDOMWindowProxy* aWindow,
|
|
bool aDeep,
|
|
mozIDOMWindowProxy** aFocusedWindow,
|
|
Element** aElement) {
|
|
*aElement = nullptr;
|
|
if (aFocusedWindow) *aFocusedWindow = nullptr;
|
|
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
|
|
RefPtr<Element> focusedElement =
|
|
GetFocusedDescendant(window,
|
|
aDeep ? nsFocusManager::eIncludeAllDescendants
|
|
: nsFocusManager::eOnlyCurrentWindow,
|
|
getter_AddRefs(focusedWindow));
|
|
|
|
focusedElement.forget(aElement);
|
|
|
|
if (aFocusedWindow) NS_IF_ADDREF(*aFocusedWindow = focusedWindow);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::MoveCaretToFocus(mozIDOMWindowProxy* aWindow) {
|
|
nsCOMPtr<nsIWebNavigation> webnav = do_GetInterface(aWindow);
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti = do_QueryInterface(webnav);
|
|
if (dsti) {
|
|
if (dsti->ItemType() != nsIDocShellTreeItem::typeChrome) {
|
|
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(dsti);
|
|
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
|
|
|
|
// don't move the caret for editable documents
|
|
bool isEditable;
|
|
docShell->GetEditable(&isEditable);
|
|
if (isEditable) return NS_OK;
|
|
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
nsCOMPtr<nsIContent> content = window->GetFocusedElement();
|
|
if (content) {
|
|
MoveCaretToFocus(presShell, content);
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::WindowRaised(mozIDOMWindowProxy* aWindow) {
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
LOGFOCUS(("Window %p Raised [Currently: %p %p]", aWindow,
|
|
mActiveWindow.get(), mFocusedWindow.get()));
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Raised Window: %p %s", aWindow,
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
if (mActiveWindow) {
|
|
doc = mActiveWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Active Window: %p %s", mActiveWindow.get(),
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mActiveWindow == window) {
|
|
// The window is already active, so there is no need to focus anything,
|
|
// but make sure that the right widget is focused. This is a special case
|
|
// for Windows because when restoring a minimized window, a second
|
|
// activation will occur and the top-level widget could be focused instead
|
|
// of the child we want. We solve this by calling SetFocus to ensure that
|
|
// what the focus manager thinks should be the current widget is actually
|
|
// focused.
|
|
EnsureCurrentWidgetFocused();
|
|
return NS_OK;
|
|
}
|
|
|
|
// lower the existing window, if any. This shouldn't happen usually.
|
|
if (mActiveWindow) WindowLowered(mActiveWindow);
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> docShellAsItem = window->GetDocShell();
|
|
// If there's no docShellAsItem, this window must have been closed,
|
|
// in that case there is no tree owner.
|
|
NS_ENSURE_TRUE(docShellAsItem, NS_OK);
|
|
|
|
// set this as the active window
|
|
mActiveWindow = window;
|
|
|
|
// ensure that the window is enabled and visible
|
|
nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
|
|
docShellAsItem->GetTreeOwner(getter_AddRefs(treeOwner));
|
|
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(treeOwner);
|
|
if (baseWindow) {
|
|
bool isEnabled = true;
|
|
if (NS_SUCCEEDED(baseWindow->GetEnabled(&isEnabled)) && !isEnabled) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
baseWindow->SetVisibility(true);
|
|
}
|
|
|
|
// If this is a parent or single process window, send the activate event.
|
|
// Events for child process windows will be sent when ParentActivated
|
|
// is called.
|
|
if (XRE_IsParentProcess()) {
|
|
// Popping upon lowering was inhibited to accommodate ATOK,
|
|
// so we need to do it here.
|
|
BrowserParent::PopFocusAll();
|
|
ActivateOrDeactivate(window, true);
|
|
}
|
|
|
|
// retrieve the last focused element within the window that was raised
|
|
nsCOMPtr<nsPIDOMWindowOuter> currentWindow;
|
|
RefPtr<Element> currentFocus = GetFocusedDescendant(
|
|
window, eIncludeAllDescendants, getter_AddRefs(currentWindow));
|
|
|
|
NS_ASSERTION(currentWindow, "window raised with no window current");
|
|
if (!currentWindow) return NS_OK;
|
|
|
|
// If there is no nsIXULWindow, then this is an embedded or child process
|
|
// window. Pass false for aWindowRaised so that commands get updated.
|
|
nsCOMPtr<nsIXULWindow> xulWin(do_GetInterface(baseWindow));
|
|
Focus(currentWindow, currentFocus, 0, true, false, xulWin != nullptr, true);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::WindowLowered(mozIDOMWindowProxy* aWindow) {
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
LOGFOCUS(("Window %p Lowered [Currently: %p %p]", aWindow,
|
|
mActiveWindow.get(), mFocusedWindow.get()));
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Lowered Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
if (mActiveWindow) {
|
|
doc = mActiveWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Active Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mActiveWindow != window) return NS_OK;
|
|
|
|
// clear the mouse capture as the active window has changed
|
|
PresShell::ReleaseCapturingContent();
|
|
|
|
// In addition, reset the drag state to ensure that we are no longer in
|
|
// drag-select mode.
|
|
if (mFocusedWindow) {
|
|
nsCOMPtr<nsIDocShell> docShell = mFocusedWindow->GetDocShell();
|
|
if (docShell) {
|
|
if (PresShell* presShell = docShell->GetPresShell()) {
|
|
RefPtr<nsFrameSelection> frameSelection = presShell->FrameSelection();
|
|
frameSelection->SetDragState(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
// If this is a parent or single process window, send the deactivate event.
|
|
// Events for child process windows will be sent when ParentActivated
|
|
// is called.
|
|
if (XRE_IsParentProcess()) {
|
|
ActivateOrDeactivate(window, false);
|
|
}
|
|
|
|
// keep track of the window being lowered, so that attempts to raise the
|
|
// window can be prevented until we return. Otherwise, focus can get into
|
|
// an unusual state.
|
|
mWindowBeingLowered = mActiveWindow;
|
|
mActiveWindow = nullptr;
|
|
|
|
if (mFocusedWindow) Blur(nullptr, nullptr, true, true);
|
|
|
|
mWindowBeingLowered = nullptr;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsFocusManager::ContentRemoved(Document* aDocument,
|
|
nsIContent* aContent) {
|
|
NS_ENSURE_ARG(aDocument);
|
|
NS_ENSURE_ARG(aContent);
|
|
|
|
nsPIDOMWindowOuter* window = aDocument->GetWindow();
|
|
if (!window) return NS_OK;
|
|
|
|
// if the content is currently focused in the window, or is an
|
|
// shadow-including inclusive ancestor of the currently focused element,
|
|
// reset the focus within that window.
|
|
nsIContent* content = window->GetFocusedElement();
|
|
if (content &&
|
|
nsContentUtils::ContentIsHostIncludingDescendantOf(content, aContent)) {
|
|
bool shouldShowFocusRing = window->ShouldShowFocusRing();
|
|
window->SetFocusedElement(nullptr);
|
|
|
|
// if this window is currently focused, clear the global focused
|
|
// element as well, but don't fire any events.
|
|
if (window == mFocusedWindow) {
|
|
mFocusedElement = nullptr;
|
|
} else {
|
|
// Check if the node that was focused is an iframe or similar by looking
|
|
// if it has a subdocument. This would indicate that this focused iframe
|
|
// and its descendants will be going away. We will need to move the
|
|
// focus somewhere else, so just clear the focus in the toplevel window
|
|
// so that no element is focused.
|
|
Document* subdoc = aDocument->GetSubDocumentFor(content);
|
|
if (subdoc) {
|
|
nsCOMPtr<nsIDocShell> docShell = subdoc->GetDocShell();
|
|
if (docShell) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> childWindow = docShell->GetWindow();
|
|
if (childWindow && IsSameOrAncestor(childWindow, mFocusedWindow)) {
|
|
ClearFocus(mActiveWindow);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Notify the editor in case we removed its ancestor limiter.
|
|
if (content->IsEditable()) {
|
|
nsCOMPtr<nsIDocShell> docShell = aDocument->GetDocShell();
|
|
if (docShell) {
|
|
RefPtr<HTMLEditor> htmlEditor = docShell->GetHTMLEditor();
|
|
if (htmlEditor) {
|
|
RefPtr<Selection> selection = htmlEditor->GetSelection();
|
|
if (selection && selection->GetFrameSelection() &&
|
|
content == selection->GetFrameSelection()->GetAncestorLimiter()) {
|
|
htmlEditor->FinalizeSelection();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
NotifyFocusStateChange(content, nullptr, shouldShowFocusRing, false);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::WindowShown(mozIDOMWindowProxy* aWindow, bool aNeedsFocus) {
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
LOGFOCUS(("Window %p Shown [Currently: %p %p]", window.get(),
|
|
mActiveWindow.get(), mFocusedWindow.get()));
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS(("Shown Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
|
|
if (mFocusedWindow) {
|
|
doc = mFocusedWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Focused Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nsIDocShell* docShell = window->GetDocShell()) {
|
|
if (nsCOMPtr<nsIBrowserChild> child = docShell->GetBrowserChild()) {
|
|
bool active = static_cast<BrowserChild*>(child.get())->ParentIsActive();
|
|
ActivateOrDeactivate(window, active);
|
|
}
|
|
}
|
|
|
|
if (mFocusedWindow != window) return NS_OK;
|
|
|
|
if (aNeedsFocus) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> currentWindow;
|
|
RefPtr<Element> currentFocus = GetFocusedDescendant(
|
|
window, eIncludeAllDescendants, getter_AddRefs(currentWindow));
|
|
if (currentWindow)
|
|
Focus(currentWindow, currentFocus, 0, true, false, false, true);
|
|
} else {
|
|
// Sometimes, an element in a window can be focused before the window is
|
|
// visible, which would mean that the widget may not be properly focused.
|
|
// When the window becomes visible, make sure the right widget is focused.
|
|
EnsureCurrentWidgetFocused();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::WindowHidden(mozIDOMWindowProxy* aWindow) {
|
|
// if there is no window or it is not the same or an ancestor of the
|
|
// currently focused window, just return, as the current focus will not
|
|
// be affected.
|
|
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
LOGFOCUS(("Window %p Hidden [Currently: %p %p]", window.get(),
|
|
mActiveWindow.get(), mFocusedWindow.get()));
|
|
nsAutoCString spec;
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Hide Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
|
|
if (mFocusedWindow) {
|
|
doc = mFocusedWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Focused Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
|
|
if (mActiveWindow) {
|
|
doc = mActiveWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Active Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!IsSameOrAncestor(window, mFocusedWindow)) return NS_OK;
|
|
|
|
// at this point, we know that the window being hidden is either the focused
|
|
// window, or an ancestor of the focused window. Either way, the focus is no
|
|
// longer valid, so it needs to be updated.
|
|
|
|
RefPtr<Element> oldFocusedElement = mFocusedElement.forget();
|
|
|
|
nsCOMPtr<nsIDocShell> focusedDocShell = mFocusedWindow->GetDocShell();
|
|
RefPtr<PresShell> presShell = focusedDocShell->GetPresShell();
|
|
|
|
if (oldFocusedElement && oldFocusedElement->IsInComposedDoc()) {
|
|
NotifyFocusStateChange(oldFocusedElement, nullptr,
|
|
mFocusedWindow->ShouldShowFocusRing(), false);
|
|
window->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
|
|
if (presShell) {
|
|
SendFocusOrBlurEvent(eBlur, presShell,
|
|
oldFocusedElement->GetComposedDoc(),
|
|
oldFocusedElement, 1, false);
|
|
}
|
|
}
|
|
|
|
nsPresContext* focusedPresContext =
|
|
presShell ? presShell->GetPresContext() : nullptr;
|
|
IMEStateManager::OnChangeFocus(focusedPresContext, nullptr,
|
|
GetFocusMoveActionCause(0));
|
|
if (presShell) {
|
|
SetCaretVisible(presShell, false, nullptr);
|
|
}
|
|
|
|
// if the docshell being hidden is being destroyed, then we want to move
|
|
// focus somewhere else. Call ClearFocus on the toplevel window, which
|
|
// will have the effect of clearing the focus and moving the focused window
|
|
// to the toplevel window. But if the window isn't being destroyed, we are
|
|
// likely just loading a new document in it, so we want to maintain the
|
|
// focused window so that the new document gets properly focused.
|
|
nsCOMPtr<nsIDocShell> docShellBeingHidden = window->GetDocShell();
|
|
bool beingDestroyed = !docShellBeingHidden;
|
|
if (docShellBeingHidden) {
|
|
docShellBeingHidden->IsBeingDestroyed(&beingDestroyed);
|
|
}
|
|
if (beingDestroyed) {
|
|
// There is usually no need to do anything if a toplevel window is going
|
|
// away, as we assume that WindowLowered will be called. However, this may
|
|
// not happen if nsIAppStartup::eForceQuit is used to quit, and can cause
|
|
// a leak. So if the active window is being destroyed, call WindowLowered
|
|
// directly.
|
|
if (mActiveWindow == mFocusedWindow || mActiveWindow == window)
|
|
WindowLowered(mActiveWindow);
|
|
else
|
|
ClearFocus(mActiveWindow);
|
|
return NS_OK;
|
|
}
|
|
|
|
// if the window being hidden is an ancestor of the focused window, adjust
|
|
// the focused window so that it points to the one being hidden. This
|
|
// ensures that the focused window isn't in a chain of frames that doesn't
|
|
// exist any more.
|
|
if (window != mFocusedWindow) {
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti =
|
|
mFocusedWindow ? mFocusedWindow->GetDocShell() : nullptr;
|
|
if (dsti) {
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti;
|
|
dsti->GetInProcessParent(getter_AddRefs(parentDsti));
|
|
if (parentDsti) {
|
|
if (nsCOMPtr<nsPIDOMWindowOuter> parentWindow = parentDsti->GetWindow())
|
|
parentWindow->SetFocusedElement(nullptr);
|
|
}
|
|
}
|
|
|
|
SetFocusedWindowInternal(window);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::FireDelayedEvents(Document* aDocument) {
|
|
NS_ENSURE_ARG(aDocument);
|
|
|
|
// fire any delayed focus and blur events in the same order that they were
|
|
// added
|
|
for (uint32_t i = 0; i < mDelayedBlurFocusEvents.Length(); i++) {
|
|
if (mDelayedBlurFocusEvents[i].mDocument == aDocument) {
|
|
if (!aDocument->GetInnerWindow() ||
|
|
!aDocument->GetInnerWindow()->IsCurrentInnerWindow()) {
|
|
// If the document was navigated away from or is defunct, don't bother
|
|
// firing events on it. Note the symmetry between this condition and
|
|
// the similar one in Document.cpp:FireOrClearDelayedEvents.
|
|
mDelayedBlurFocusEvents.RemoveElementAt(i);
|
|
--i;
|
|
} else if (!aDocument->EventHandlingSuppressed()) {
|
|
EventMessage message = mDelayedBlurFocusEvents[i].mEventMessage;
|
|
nsCOMPtr<EventTarget> target = mDelayedBlurFocusEvents[i].mTarget;
|
|
RefPtr<PresShell> presShell = mDelayedBlurFocusEvents[i].mPresShell;
|
|
nsCOMPtr<EventTarget> relatedTarget =
|
|
mDelayedBlurFocusEvents[i].mRelatedTarget;
|
|
mDelayedBlurFocusEvents.RemoveElementAt(i);
|
|
|
|
FireFocusOrBlurEvent(message, presShell, target, false, false,
|
|
relatedTarget);
|
|
--i;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::FocusPlugin(Element* aPlugin) {
|
|
NS_ENSURE_ARG(aPlugin);
|
|
SetFocusInner(aPlugin, 0, true, false);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::ParentActivated(mozIDOMWindowProxy* aWindow, bool aActive) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
NS_ENSURE_TRUE(window, NS_ERROR_INVALID_ARG);
|
|
|
|
ActivateOrDeactivate(window, aActive);
|
|
return NS_OK;
|
|
}
|
|
|
|
/* static */
|
|
void nsFocusManager::NotifyFocusStateChange(nsIContent* aContent,
|
|
nsIContent* aContentToFocus,
|
|
bool aWindowShouldShowFocusRing,
|
|
bool aGettingFocus) {
|
|
MOZ_ASSERT_IF(aContentToFocus, !aGettingFocus);
|
|
if (!aContent->IsElement()) {
|
|
return;
|
|
}
|
|
|
|
nsIContent* commonAncestor = nullptr;
|
|
if (aContentToFocus && aContentToFocus->IsElement()) {
|
|
commonAncestor = nsContentUtils::GetCommonFlattenedTreeAncestor(
|
|
aContent, aContentToFocus);
|
|
}
|
|
|
|
EventStates eventState = NS_EVENT_STATE_FOCUS;
|
|
if (aWindowShouldShowFocusRing) {
|
|
eventState |= NS_EVENT_STATE_FOCUSRING;
|
|
}
|
|
|
|
if (aGettingFocus) {
|
|
aContent->AsElement()->AddStates(eventState);
|
|
} else {
|
|
aContent->AsElement()->RemoveStates(eventState);
|
|
}
|
|
|
|
for (nsIContent* content = aContent; content && content != commonAncestor;
|
|
content = content->GetFlattenedTreeParent()) {
|
|
if (!content->IsElement()) {
|
|
continue;
|
|
}
|
|
|
|
Element* element = content->AsElement();
|
|
if (aGettingFocus) {
|
|
if (element->State().HasState(NS_EVENT_STATE_FOCUS_WITHIN)) {
|
|
break;
|
|
}
|
|
element->AddStates(NS_EVENT_STATE_FOCUS_WITHIN);
|
|
} else {
|
|
element->RemoveStates(NS_EVENT_STATE_FOCUS_WITHIN);
|
|
}
|
|
}
|
|
}
|
|
|
|
// static
|
|
void nsFocusManager::EnsureCurrentWidgetFocused() {
|
|
if (!mFocusedWindow || sTestMode) return;
|
|
|
|
// get the main child widget for the focused window and ensure that the
|
|
// platform knows that this widget is focused.
|
|
nsCOMPtr<nsIDocShell> docShell = mFocusedWindow->GetDocShell();
|
|
if (!docShell) {
|
|
return;
|
|
}
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
nsViewManager* vm = presShell->GetViewManager();
|
|
if (!vm) {
|
|
return;
|
|
}
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (!widget) {
|
|
return;
|
|
}
|
|
widget->SetFocus(nsIWidget::Raise::No);
|
|
}
|
|
|
|
bool ActivateOrDeactivateChild(BrowserParent* aParent, void* aArg) {
|
|
bool active = static_cast<bool>(aArg);
|
|
Unused << aParent->SendParentActivated(active);
|
|
return false;
|
|
}
|
|
|
|
void nsFocusManager::ActivateOrDeactivate(nsPIDOMWindowOuter* aWindow,
|
|
bool aActive) {
|
|
if (!aWindow) {
|
|
return;
|
|
}
|
|
|
|
// Inform the DOM window that it has activated or deactivated, so that
|
|
// the active attribute is updated on the window.
|
|
aWindow->ActivateOrDeactivate(aActive);
|
|
|
|
// Send the activate event.
|
|
if (aWindow->GetExtantDoc()) {
|
|
nsContentUtils::DispatchEventOnlyToChrome(
|
|
aWindow->GetExtantDoc(), aWindow->GetCurrentInnerWindow(),
|
|
aActive ? NS_LITERAL_STRING("activate")
|
|
: NS_LITERAL_STRING("deactivate"),
|
|
CanBubble::eYes, Cancelable::eYes, nullptr);
|
|
}
|
|
|
|
// Look for any remote child frames, iterate over them and send the activation
|
|
// notification.
|
|
nsContentUtils::CallOnAllRemoteChildren(aWindow, ActivateOrDeactivateChild,
|
|
(void*)aActive);
|
|
}
|
|
|
|
void nsFocusManager::SetFocusInner(Element* aNewContent, int32_t aFlags,
|
|
bool aFocusChanged, bool aAdjustWidget) {
|
|
// if the element is not focusable, just return and leave the focus as is
|
|
RefPtr<Element> elementToFocus =
|
|
FlushAndCheckIfFocusable(aNewContent, aFlags);
|
|
if (!elementToFocus) {
|
|
return;
|
|
}
|
|
|
|
// check if the element to focus is a frame (iframe) containing a child
|
|
// document. Frames are never directly focused; instead focusing a frame
|
|
// means focus what is inside the frame. To do this, the descendant content
|
|
// within the frame is retrieved and that will be focused instead.
|
|
nsCOMPtr<nsPIDOMWindowOuter> newWindow;
|
|
nsCOMPtr<nsPIDOMWindowOuter> subWindow = GetContentWindow(elementToFocus);
|
|
if (subWindow) {
|
|
elementToFocus = GetFocusedDescendant(subWindow, eIncludeAllDescendants,
|
|
getter_AddRefs(newWindow));
|
|
// since a window is being refocused, clear aFocusChanged so that the
|
|
// caret position isn't updated.
|
|
aFocusChanged = false;
|
|
}
|
|
|
|
// unless it was set above, retrieve the window for the element to focus
|
|
if (!newWindow) {
|
|
newWindow = GetCurrentWindow(elementToFocus);
|
|
}
|
|
|
|
// if the element is already focused, just return. Note that this happens
|
|
// after the frame check above so that we compare the element that will be
|
|
// focused rather than the frame it is in.
|
|
if (!newWindow ||
|
|
(newWindow == mFocusedWindow && elementToFocus == mFocusedElement)) {
|
|
return;
|
|
}
|
|
|
|
// don't allow focus to be placed in docshells or descendants of docshells
|
|
// that are being destroyed. Also, ensure that the page hasn't been
|
|
// unloaded. The prevents content from being refocused during an unload event.
|
|
nsCOMPtr<nsIDocShell> newDocShell = newWindow->GetDocShell();
|
|
nsCOMPtr<nsIDocShell> docShell = newDocShell;
|
|
while (docShell) {
|
|
bool inUnload;
|
|
docShell->GetIsInUnload(&inUnload);
|
|
if (inUnload) return;
|
|
|
|
bool beingDestroyed;
|
|
docShell->IsBeingDestroyed(&beingDestroyed);
|
|
if (beingDestroyed) return;
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti;
|
|
docShell->GetInProcessParent(getter_AddRefs(parentDsti));
|
|
docShell = do_QueryInterface(parentDsti);
|
|
}
|
|
|
|
// if the new element is in the same window as the currently focused element
|
|
bool isElementInFocusedWindow = (mFocusedWindow == newWindow);
|
|
|
|
if (!isElementInFocusedWindow && mFocusedWindow && newWindow &&
|
|
nsContentUtils::IsHandlingKeyBoardEvent()) {
|
|
nsCOMPtr<nsIScriptObjectPrincipal> focused =
|
|
do_QueryInterface(mFocusedWindow);
|
|
nsCOMPtr<nsIScriptObjectPrincipal> newFocus = do_QueryInterface(newWindow);
|
|
nsIPrincipal* focusedPrincipal = focused->GetPrincipal();
|
|
nsIPrincipal* newPrincipal = newFocus->GetPrincipal();
|
|
if (!focusedPrincipal || !newPrincipal) {
|
|
return;
|
|
}
|
|
bool subsumes = false;
|
|
focusedPrincipal->Subsumes(newPrincipal, &subsumes);
|
|
if (!subsumes && !nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
|
|
NS_WARNING("Not allowed to focus the new window!");
|
|
return;
|
|
}
|
|
}
|
|
|
|
// to check if the new element is in the active window, compare the
|
|
// new root docshell for the new element with the active window's docshell.
|
|
bool isElementInActiveWindow = false;
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti = newWindow->GetDocShell();
|
|
nsCOMPtr<nsPIDOMWindowOuter> newRootWindow;
|
|
if (dsti) {
|
|
nsCOMPtr<nsIDocShellTreeItem> root;
|
|
dsti->GetInProcessRootTreeItem(getter_AddRefs(root));
|
|
newRootWindow = root ? root->GetWindow() : nullptr;
|
|
|
|
isElementInActiveWindow = (mActiveWindow && newRootWindow == mActiveWindow);
|
|
}
|
|
|
|
// Exit fullscreen if we're focusing a windowed plugin on a non-MacOSX
|
|
// system. We don't control event dispatch to windowed plugins on non-MacOSX,
|
|
// so we can't display the "Press ESC to leave fullscreen mode" warning on
|
|
// key input if a windowed plugin is focused, so just exit fullscreen
|
|
// to guard against phishing.
|
|
#ifndef XP_MACOSX
|
|
if (elementToFocus &&
|
|
nsContentUtils::GetRootDocument(elementToFocus->OwnerDoc())
|
|
->GetFullscreenElement() &&
|
|
nsContentUtils::HasPluginWithUncontrolledEventDispatch(elementToFocus)) {
|
|
nsContentUtils::ReportToConsole(
|
|
nsIScriptError::warningFlag, NS_LITERAL_CSTRING("DOM"),
|
|
elementToFocus->OwnerDoc(), nsContentUtils::eDOM_PROPERTIES,
|
|
"FocusedWindowedPluginWhileFullscreen");
|
|
Document::AsyncExitFullscreen(elementToFocus->OwnerDoc());
|
|
}
|
|
#endif
|
|
|
|
// if the FLAG_NOSWITCHFRAME flag is used, only allow the focus to be
|
|
// shifted away from the current element if the new shell to focus is
|
|
// the same or an ancestor shell of the currently focused shell.
|
|
bool allowFrameSwitch = !(aFlags & FLAG_NOSWITCHFRAME) ||
|
|
IsSameOrAncestor(newWindow, mFocusedWindow);
|
|
|
|
// if the element is in the active window, frame switching is allowed and
|
|
// the content is in a visible window, fire blur and focus events.
|
|
bool sendFocusEvent =
|
|
isElementInActiveWindow && allowFrameSwitch && IsWindowVisible(newWindow);
|
|
|
|
// When the following conditions are true:
|
|
// * an element has focus
|
|
// * isn't called by trusted event (i.e., called by untrusted event or by js)
|
|
// * the focus is moved to another document's element
|
|
// we need to check the permission.
|
|
if (sendFocusEvent && mFocusedElement &&
|
|
!nsContentUtils::LegacyIsCallerNativeCode() &&
|
|
mFocusedElement->OwnerDoc() != aNewContent->OwnerDoc()) {
|
|
// If the caller cannot access the current focused node, the caller should
|
|
// not be able to steal focus from it. E.g., When the current focused node
|
|
// is in chrome, any web contents should not be able to steal the focus.
|
|
sendFocusEvent = nsContentUtils::CanCallerAccess(mFocusedElement);
|
|
if (!sendFocusEvent && mMouseButtonEventHandlingDocument) {
|
|
// However, while mouse button event is handling, the handling document's
|
|
// script should be able to steal focus.
|
|
sendFocusEvent =
|
|
nsContentUtils::CanCallerAccess(mMouseButtonEventHandlingDocument);
|
|
}
|
|
}
|
|
|
|
LOGCONTENT("Shift Focus: %s", elementToFocus.get());
|
|
LOGFOCUS((" Flags: %x Current Window: %p New Window: %p Current Element: %p",
|
|
aFlags, mFocusedWindow.get(), newWindow.get(),
|
|
mFocusedElement.get()));
|
|
LOGFOCUS((" In Active Window: %d In Focused Window: %d SendFocus: %d",
|
|
isElementInActiveWindow, isElementInFocusedWindow, sendFocusEvent));
|
|
|
|
if (sendFocusEvent) {
|
|
RefPtr<Element> oldFocusedElement = mFocusedElement;
|
|
// return if blurring fails or the focus changes during the blur
|
|
if (mFocusedWindow) {
|
|
// if the focus is being moved to another element in the same document,
|
|
// or to a descendant, pass the existing window to Blur so that the
|
|
// current node in the existing window is cleared. If moving to a
|
|
// window elsewhere, we want to maintain the current node in the
|
|
// window but still blur it.
|
|
bool currentIsSameOrAncestor =
|
|
IsSameOrAncestor(mFocusedWindow, newWindow);
|
|
// find the common ancestor of the currently focused window and the new
|
|
// window. The ancestor will need to have its currently focused node
|
|
// cleared once the document has been blurred. Otherwise, we'll be in a
|
|
// state where a document is blurred yet the chain of windows above it
|
|
// still points to that document.
|
|
// For instance, in the following frame tree:
|
|
// A
|
|
// B C
|
|
// D
|
|
// D is focused and we want to focus C. Once D has been blurred, we need
|
|
// to clear out the focus in A, otherwise A would still maintain that B
|
|
// was focused, and B that D was focused.
|
|
nsCOMPtr<nsPIDOMWindowOuter> commonAncestor;
|
|
if (!isElementInFocusedWindow)
|
|
commonAncestor = GetCommonAncestor(newWindow, mFocusedWindow);
|
|
|
|
if (!Blur(currentIsSameOrAncestor ? mFocusedWindow.get() : nullptr,
|
|
commonAncestor, !isElementInFocusedWindow, aAdjustWidget,
|
|
elementToFocus)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
Focus(newWindow, elementToFocus, aFlags, !isElementInFocusedWindow,
|
|
aFocusChanged, false, aAdjustWidget, oldFocusedElement);
|
|
} else {
|
|
// otherwise, for inactive windows and when the caller cannot steal the
|
|
// focus, update the node in the window, and raise the window if desired.
|
|
if (allowFrameSwitch) AdjustWindowFocus(newWindow, true);
|
|
|
|
// set the focus node and method as needed
|
|
uint32_t focusMethod =
|
|
aFocusChanged ? aFlags & FOCUSMETHODANDRING_MASK
|
|
: newWindow->GetFocusMethod() | (aFlags & FLAG_SHOWRING);
|
|
newWindow->SetFocusedElement(elementToFocus, focusMethod);
|
|
if (aFocusChanged) {
|
|
nsCOMPtr<nsIDocShell> docShell = newWindow->GetDocShell();
|
|
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
if (presShell && presShell->DidInitialize()) {
|
|
ScrollIntoView(presShell, elementToFocus, aFlags);
|
|
}
|
|
}
|
|
|
|
// update the commands even when inactive so that the attributes for that
|
|
// window are up to date.
|
|
if (allowFrameSwitch)
|
|
newWindow->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
|
|
if (aFlags & FLAG_RAISE) RaiseWindow(newRootWindow);
|
|
}
|
|
}
|
|
|
|
bool nsFocusManager::IsSameOrAncestor(nsPIDOMWindowOuter* aPossibleAncestor,
|
|
nsPIDOMWindowOuter* aWindow) {
|
|
if (!aWindow || !aPossibleAncestor) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> ancestordsti = aPossibleAncestor->GetDocShell();
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti = aWindow->GetDocShell();
|
|
while (dsti) {
|
|
if (dsti == ancestordsti) return true;
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti;
|
|
dsti->GetInProcessParent(getter_AddRefs(parentDsti));
|
|
dsti.swap(parentDsti);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindowOuter> nsFocusManager::GetCommonAncestor(
|
|
nsPIDOMWindowOuter* aWindow1, nsPIDOMWindowOuter* aWindow2) {
|
|
NS_ENSURE_TRUE(aWindow1 && aWindow2, nullptr);
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti1 = aWindow1->GetDocShell();
|
|
NS_ENSURE_TRUE(dsti1, nullptr);
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti2 = aWindow2->GetDocShell();
|
|
NS_ENSURE_TRUE(dsti2, nullptr);
|
|
|
|
AutoTArray<nsIDocShellTreeItem*, 30> parents1, parents2;
|
|
do {
|
|
parents1.AppendElement(dsti1);
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti1;
|
|
dsti1->GetInProcessParent(getter_AddRefs(parentDsti1));
|
|
dsti1.swap(parentDsti1);
|
|
} while (dsti1);
|
|
do {
|
|
parents2.AppendElement(dsti2);
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti2;
|
|
dsti2->GetInProcessParent(getter_AddRefs(parentDsti2));
|
|
dsti2.swap(parentDsti2);
|
|
} while (dsti2);
|
|
|
|
uint32_t pos1 = parents1.Length();
|
|
uint32_t pos2 = parents2.Length();
|
|
nsIDocShellTreeItem* parent = nullptr;
|
|
uint32_t len;
|
|
for (len = std::min(pos1, pos2); len > 0; --len) {
|
|
nsIDocShellTreeItem* child1 = parents1.ElementAt(--pos1);
|
|
nsIDocShellTreeItem* child2 = parents2.ElementAt(--pos2);
|
|
if (child1 != child2) {
|
|
break;
|
|
}
|
|
parent = child1;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = parent ? parent->GetWindow() : nullptr;
|
|
return window.forget();
|
|
}
|
|
|
|
void nsFocusManager::AdjustWindowFocus(nsPIDOMWindowOuter* aWindow,
|
|
bool aCheckPermission) {
|
|
bool isVisible = IsWindowVisible(aWindow);
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window(aWindow);
|
|
while (window) {
|
|
// get the containing <iframe> or equivalent element so that it can be
|
|
// focused below.
|
|
nsCOMPtr<Element> frameElement = window->GetFrameElementInternal();
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti = window->GetDocShell();
|
|
if (!dsti) return;
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti;
|
|
dsti->GetInProcessParent(getter_AddRefs(parentDsti));
|
|
if (!parentDsti) {
|
|
return;
|
|
}
|
|
|
|
window = parentDsti->GetWindow();
|
|
if (window) {
|
|
// if the parent window is visible but aWindow was not, then we have
|
|
// likely moved up and out from a hidden tab to the browser window, or a
|
|
// similar such arrangement. Stop adjusting the current nodes.
|
|
if (IsWindowVisible(window) != isVisible) break;
|
|
|
|
// When aCheckPermission is true, we should check whether the caller can
|
|
// access the window or not. If it cannot access, we should stop the
|
|
// adjusting.
|
|
if (aCheckPermission && !nsContentUtils::LegacyIsCallerNativeCode() &&
|
|
!nsContentUtils::CanCallerAccess(window->GetCurrentInnerWindow())) {
|
|
break;
|
|
}
|
|
|
|
window->SetFocusedElement(frameElement);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool nsFocusManager::IsWindowVisible(nsPIDOMWindowOuter* aWindow) {
|
|
if (!aWindow || aWindow->IsFrozen()) return false;
|
|
|
|
// Check if the inner window is frozen as well. This can happen when a focus
|
|
// change occurs while restoring a previous page.
|
|
nsPIDOMWindowInner* innerWindow = aWindow->GetCurrentInnerWindow();
|
|
if (!innerWindow || innerWindow->IsFrozen()) return false;
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(docShell));
|
|
if (!baseWin) return false;
|
|
|
|
bool visible = false;
|
|
baseWin->GetVisibility(&visible);
|
|
return visible;
|
|
}
|
|
|
|
bool nsFocusManager::IsNonFocusableRoot(nsIContent* aContent) {
|
|
MOZ_ASSERT(aContent, "aContent must not be NULL");
|
|
MOZ_ASSERT(aContent->IsInComposedDoc(), "aContent must be in a document");
|
|
|
|
// If aContent is in designMode, the root element is not focusable.
|
|
// NOTE: in designMode, most elements are not focusable, just the document is
|
|
// focusable.
|
|
// Also, if aContent is not editable but it isn't in designMode, it's not
|
|
// focusable.
|
|
// And in userfocusignored context nothing is focusable.
|
|
Document* doc = aContent->GetComposedDoc();
|
|
NS_ASSERTION(doc, "aContent must have current document");
|
|
return aContent == doc->GetRootElement() &&
|
|
(doc->HasFlag(NODE_IS_EDITABLE) || !aContent->IsEditable() ||
|
|
nsContentUtils::IsUserFocusIgnored(aContent));
|
|
}
|
|
|
|
Element* nsFocusManager::FlushAndCheckIfFocusable(Element* aElement,
|
|
uint32_t aFlags) {
|
|
if (!aElement) return nullptr;
|
|
|
|
nsCOMPtr<Document> doc = aElement->GetComposedDoc();
|
|
// can't focus elements that are not in documents
|
|
if (!doc) {
|
|
LOGCONTENT("Cannot focus %s because content not in document", aElement)
|
|
return nullptr;
|
|
}
|
|
|
|
// Make sure that our frames are up to date while ensuring the presshell is
|
|
// also initialized in case we come from a script calling focus() early.
|
|
mEventHandlingNeedsFlush = false;
|
|
doc->FlushPendingNotifications(FlushType::EnsurePresShellInitAndFrames);
|
|
|
|
// this is a special case for some XUL elements or input number, where an
|
|
// anonymous child is actually focusable and not the element itself.
|
|
RefPtr<Element> redirectedFocus = GetRedirectedFocus(aElement);
|
|
if (redirectedFocus) {
|
|
return FlushAndCheckIfFocusable(redirectedFocus, aFlags);
|
|
}
|
|
|
|
PresShell* presShell = doc->GetPresShell();
|
|
if (!presShell) {
|
|
return nullptr;
|
|
}
|
|
|
|
// the root content can always be focused,
|
|
// except in userfocusignored context.
|
|
if (aElement == doc->GetRootElement()) {
|
|
return nsContentUtils::IsUserFocusIgnored(aElement) ? nullptr : aElement;
|
|
}
|
|
|
|
// cannot focus content in print preview mode. Only the root can be focused.
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
if (presContext &&
|
|
presContext->Type() == nsPresContext::eContext_PrintPreview) {
|
|
LOGCONTENT("Cannot focus %s while in print preview", aElement)
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* frame = aElement->GetPrimaryFrame();
|
|
if (!frame) {
|
|
LOGCONTENT("Cannot focus %s as it has no frame", aElement)
|
|
return nullptr;
|
|
}
|
|
|
|
if (aElement->IsHTMLElement(nsGkAtoms::area)) {
|
|
// HTML areas do not have their own frame, and the img frame we get from
|
|
// GetPrimaryFrame() is not relevant as to whether it is focusable or
|
|
// not, so we have to do all the relevant checks manually for them.
|
|
return frame->IsVisibleConsideringAncestors() && aElement->IsFocusable()
|
|
? aElement
|
|
: nullptr;
|
|
}
|
|
|
|
// if this is a child frame content node, check if it is visible and
|
|
// call the content node's IsFocusable method instead of the frame's
|
|
// IsFocusable method. This skips checking the style system and ensures that
|
|
// offscreen browsers can still be focused.
|
|
Document* subdoc = doc->GetSubDocumentFor(aElement);
|
|
if (subdoc && IsWindowVisible(subdoc->GetWindow())) {
|
|
const nsStyleUI* ui = frame->StyleUI();
|
|
int32_t tabIndex = (ui->mUserFocus == StyleUserFocus::Ignore ||
|
|
ui->mUserFocus == StyleUserFocus::None)
|
|
? -1
|
|
: 0;
|
|
return aElement->IsFocusable(&tabIndex, aFlags & FLAG_BYMOUSE) ? aElement
|
|
: nullptr;
|
|
}
|
|
|
|
return frame->IsFocusable(nullptr, aFlags & FLAG_BYMOUSE) ? aElement
|
|
: nullptr;
|
|
}
|
|
|
|
bool nsFocusManager::Blur(nsPIDOMWindowOuter* aWindowToClear,
|
|
nsPIDOMWindowOuter* aAncestorWindowToFocus,
|
|
bool aIsLeavingDocument, bool aAdjustWidgets,
|
|
nsIContent* aContentToFocus) {
|
|
LOGFOCUS(("<<Blur begin>>"));
|
|
|
|
// hold a reference to the focused content, which may be null
|
|
RefPtr<Element> element = mFocusedElement;
|
|
if (element) {
|
|
if (!element->IsInComposedDoc()) {
|
|
mFocusedElement = nullptr;
|
|
return true;
|
|
}
|
|
if (element == mFirstBlurEvent) return true;
|
|
}
|
|
|
|
// hold a reference to the focused window
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = mFocusedWindow;
|
|
if (!window) {
|
|
mFocusedElement = nullptr;
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = window->GetDocShell();
|
|
if (!docShell) {
|
|
mFocusedWindow = nullptr;
|
|
mFocusedElement = nullptr;
|
|
return true;
|
|
}
|
|
|
|
// Keep a ref to presShell since dispatching the DOM event may cause
|
|
// the document to be destroyed.
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
if (!presShell) {
|
|
mFocusedElement = nullptr;
|
|
mFocusedWindow = nullptr;
|
|
return true;
|
|
}
|
|
|
|
bool clearFirstBlurEvent = false;
|
|
if (!mFirstBlurEvent) {
|
|
mFirstBlurEvent = element;
|
|
clearFirstBlurEvent = true;
|
|
}
|
|
|
|
nsPresContext* focusedPresContext =
|
|
mActiveWindow ? presShell->GetPresContext() : nullptr;
|
|
IMEStateManager::OnChangeFocus(focusedPresContext, nullptr,
|
|
GetFocusMoveActionCause(0));
|
|
|
|
// now adjust the actual focus, by clearing the fields in the focus manager
|
|
// and in the window.
|
|
mFocusedElement = nullptr;
|
|
bool shouldShowFocusRing = window->ShouldShowFocusRing();
|
|
if (aWindowToClear) aWindowToClear->SetFocusedElement(nullptr);
|
|
|
|
LOGCONTENT("Element %s has been blurred", element.get());
|
|
|
|
// Don't fire blur event on the root content which isn't editable.
|
|
bool sendBlurEvent =
|
|
element && element->IsInComposedDoc() && !IsNonFocusableRoot(element);
|
|
if (element) {
|
|
if (sendBlurEvent) {
|
|
NotifyFocusStateChange(element, aContentToFocus, shouldShowFocusRing,
|
|
false);
|
|
}
|
|
|
|
// if an object/plug-in/remote browser is being blurred, move the system
|
|
// focus to the parent window, otherwise events will still get fired at the
|
|
// plugin. But don't do this if we are blurring due to the window being
|
|
// lowered, otherwise, the parent window can get raised again.
|
|
if (mActiveWindow) {
|
|
nsIFrame* contentFrame = element->GetPrimaryFrame();
|
|
nsIObjectFrame* objectFrame = do_QueryFrame(contentFrame);
|
|
if (aAdjustWidgets && objectFrame && !sTestMode) {
|
|
if (XRE_IsContentProcess()) {
|
|
// set focus to the top level window via the chrome process.
|
|
nsCOMPtr<nsIBrowserChild> browserChild = docShell->GetBrowserChild();
|
|
if (browserChild) {
|
|
static_cast<BrowserChild*>(browserChild.get())
|
|
->SendDispatchFocusToTopLevelWindow();
|
|
}
|
|
} else {
|
|
// note that the presshell's widget is being retrieved here, not the
|
|
// one for the object frame.
|
|
if (nsViewManager* vm = presShell->GetViewManager()) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (widget) {
|
|
// set focus to the top level window but don't raise it.
|
|
widget->SetFocus(nsIWidget::Raise::No);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool windowBeingLowered = !aWindowToClear && !aAncestorWindowToFocus &&
|
|
aIsLeavingDocument && aAdjustWidgets;
|
|
// if the object being blurred is a remote browser, deactivate remote
|
|
// content
|
|
if (BrowserParent* remote = BrowserParent::GetFrom(element)) {
|
|
remote->Deactivate(windowBeingLowered);
|
|
LOGFOCUS(
|
|
("Remote browser deactivated %p, %d", remote, windowBeingLowered));
|
|
}
|
|
|
|
// Same as above but for out-of-process iframes
|
|
if (BrowserBridgeChild* bbc = BrowserBridgeChild::GetFrom(element)) {
|
|
bbc->Deactivate(windowBeingLowered);
|
|
LOGFOCUS(("Out-of-process iframe deactivated %p, %d", bbc,
|
|
windowBeingLowered));
|
|
}
|
|
}
|
|
|
|
bool result = true;
|
|
if (sendBlurEvent) {
|
|
// if there is an active window, update commands. If there isn't an active
|
|
// window, then this was a blur caused by the active window being lowered,
|
|
// so there is no need to update the commands
|
|
if (mActiveWindow)
|
|
window->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
|
|
SendFocusOrBlurEvent(eBlur, presShell, element->GetComposedDoc(), element,
|
|
1, false, false, aContentToFocus);
|
|
}
|
|
|
|
// if we are leaving the document or the window was lowered, make the caret
|
|
// invisible.
|
|
if (aIsLeavingDocument || !mActiveWindow) {
|
|
SetCaretVisible(presShell, false, nullptr);
|
|
}
|
|
|
|
RefPtr<AccessibleCaretEventHub> eventHub =
|
|
presShell->GetAccessibleCaretEventHub();
|
|
if (eventHub) {
|
|
eventHub->NotifyBlur(aIsLeavingDocument || !mActiveWindow);
|
|
}
|
|
|
|
// at this point, it is expected that this window will be still be
|
|
// focused, but the focused element will be null, as it was cleared before
|
|
// the event. If this isn't the case, then something else was focused during
|
|
// the blur event above and we should just return. However, if
|
|
// aIsLeavingDocument is set, a new document is desired, so make sure to
|
|
// blur the document and window.
|
|
if (mFocusedWindow != window ||
|
|
(mFocusedElement != nullptr && !aIsLeavingDocument)) {
|
|
result = false;
|
|
} else if (aIsLeavingDocument) {
|
|
window->TakeFocus(false, 0);
|
|
|
|
// clear the focus so that the ancestor frame hierarchy is in the correct
|
|
// state. Pass true because aAncestorWindowToFocus is thought to be
|
|
// focused at this point.
|
|
if (aAncestorWindowToFocus)
|
|
aAncestorWindowToFocus->SetFocusedElement(nullptr, 0, true);
|
|
|
|
SetFocusedWindowInternal(nullptr);
|
|
mFocusedElement = nullptr;
|
|
|
|
// pass 1 for the focus method when calling SendFocusOrBlurEvent just so
|
|
// that the check is made for suppressed documents. Check to ensure that
|
|
// the document isn't null in case someone closed it during the blur above
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc)
|
|
SendFocusOrBlurEvent(eBlur, presShell, doc, ToSupports(doc), 1, false);
|
|
if (mFocusedWindow == nullptr)
|
|
SendFocusOrBlurEvent(eBlur, presShell, doc,
|
|
window->GetCurrentInnerWindow(), 1, false);
|
|
|
|
// check if a different window was focused
|
|
result = (mFocusedWindow == nullptr && mActiveWindow);
|
|
} else if (mActiveWindow) {
|
|
// Otherwise, the blur of the element without blurring the document
|
|
// occurred normally. Call UpdateCaret to redisplay the caret at the right
|
|
// location within the document. This is needed to ensure that the caret
|
|
// used for caret browsing is made visible again when an input field is
|
|
// blurred.
|
|
UpdateCaret(false, true, nullptr);
|
|
}
|
|
|
|
if (clearFirstBlurEvent) mFirstBlurEvent = nullptr;
|
|
|
|
return result;
|
|
}
|
|
|
|
void nsFocusManager::ActivateRemoteFrameIfNeeded(Element& aElement) {
|
|
MOZ_DIAGNOSTIC_ASSERT(mFocusedElement == &aElement);
|
|
if (BrowserParent* remote = BrowserParent::GetFrom(&aElement)) {
|
|
remote->Activate();
|
|
LOGFOCUS(("Remote browser activated %p", remote));
|
|
}
|
|
|
|
// Same as above but for out-of-process iframes
|
|
if (BrowserBridgeChild* bbc = BrowserBridgeChild::GetFrom(&aElement)) {
|
|
bbc->Activate();
|
|
LOGFOCUS(("Out-of-process iframe activated %p", bbc));
|
|
}
|
|
}
|
|
|
|
void nsFocusManager::Focus(nsPIDOMWindowOuter* aWindow, Element* aElement,
|
|
uint32_t aFlags, bool aIsNewDocument,
|
|
bool aFocusChanged, bool aWindowRaised,
|
|
bool aAdjustWidgets, nsIContent* aContentLostFocus) {
|
|
LOGFOCUS(("<<Focus begin>>"));
|
|
|
|
if (!aWindow) return;
|
|
|
|
if (aElement && (aElement == mFirstFocusEvent || aElement == mFirstBlurEvent))
|
|
return;
|
|
|
|
// Keep a reference to the presShell since dispatching the DOM event may
|
|
// cause the document to be destroyed.
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (!docShell) return;
|
|
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
|
|
// If the focus actually changed, set the focus method (mouse, keyboard, etc).
|
|
// Otherwise, just get the current focus method and use that. This ensures
|
|
// that the method is set during the document and window focus events.
|
|
uint32_t focusMethod =
|
|
aFocusChanged ? aFlags & FOCUSMETHODANDRING_MASK
|
|
: aWindow->GetFocusMethod() | (aFlags & FLAG_SHOWRING);
|
|
|
|
if (!IsWindowVisible(aWindow)) {
|
|
// if the window isn't visible, for instance because it is a hidden tab,
|
|
// update the current focus and scroll it into view but don't do anything
|
|
// else
|
|
if (FlushAndCheckIfFocusable(aElement, aFlags)) {
|
|
aWindow->SetFocusedElement(aElement, focusMethod);
|
|
if (aFocusChanged) {
|
|
ScrollIntoView(presShell, aElement, aFlags);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
bool clearFirstFocusEvent = false;
|
|
if (!mFirstFocusEvent) {
|
|
mFirstFocusEvent = aElement;
|
|
clearFirstFocusEvent = true;
|
|
}
|
|
|
|
LOGCONTENT("Element %s has been focused", aElement);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
Document* docm = aWindow->GetExtantDoc();
|
|
if (docm) {
|
|
LOGCONTENT(" from %s", docm->GetRootElement());
|
|
}
|
|
LOGFOCUS((" [Newdoc: %d FocusChanged: %d Raised: %d Flags: %x]",
|
|
aIsNewDocument, aFocusChanged, aWindowRaised, aFlags));
|
|
}
|
|
|
|
if (aIsNewDocument) {
|
|
// if this is a new document, update the parent chain of frames so that
|
|
// focus can be traversed from the top level down to the newly focused
|
|
// window.
|
|
AdjustWindowFocus(aWindow, false);
|
|
}
|
|
|
|
// indicate that the window has taken focus.
|
|
if (aWindow->TakeFocus(true, focusMethod)) aIsNewDocument = true;
|
|
|
|
SetFocusedWindowInternal(aWindow);
|
|
|
|
// Update the system focus by focusing the root widget. But avoid this
|
|
// if 1) aAdjustWidgets is false or 2) aElement is a plugin that has its
|
|
// own widget and is either already focused or is about to be focused.
|
|
nsCOMPtr<nsIWidget> objectFrameWidget;
|
|
if (aElement) {
|
|
nsIFrame* contentFrame = aElement->GetPrimaryFrame();
|
|
nsIObjectFrame* objectFrame = do_QueryFrame(contentFrame);
|
|
if (objectFrame) objectFrameWidget = objectFrame->GetWidget();
|
|
}
|
|
if (aAdjustWidgets && !objectFrameWidget && !sTestMode) {
|
|
if (nsViewManager* vm = presShell->GetViewManager()) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (widget) widget->SetFocus(nsIWidget::Raise::No);
|
|
}
|
|
}
|
|
|
|
// if switching to a new document, first fire the focus event on the
|
|
// document and then the window.
|
|
if (aIsNewDocument) {
|
|
Document* doc = aWindow->GetExtantDoc();
|
|
// The focus change should be notified to IMEStateManager from here if
|
|
// the focused element is a designMode editor since any content won't
|
|
// receive focus event.
|
|
if (doc && doc->HasFlag(NODE_IS_EDITABLE)) {
|
|
IMEStateManager::OnChangeFocus(presShell->GetPresContext(), nullptr,
|
|
GetFocusMoveActionCause(aFlags));
|
|
}
|
|
if (doc) {
|
|
SendFocusOrBlurEvent(eFocus, presShell, doc, ToSupports(doc),
|
|
aFlags & FOCUSMETHOD_MASK, aWindowRaised);
|
|
}
|
|
if (mFocusedWindow == aWindow && mFocusedElement == nullptr) {
|
|
SendFocusOrBlurEvent(eFocus, presShell, doc,
|
|
aWindow->GetCurrentInnerWindow(),
|
|
aFlags & FOCUSMETHOD_MASK, aWindowRaised);
|
|
}
|
|
}
|
|
|
|
// check to ensure that the element is still focusable, and that nothing
|
|
// else was focused during the events above.
|
|
if (FlushAndCheckIfFocusable(aElement, aFlags) && mFocusedWindow == aWindow &&
|
|
mFocusedElement == nullptr) {
|
|
mFocusedElement = aElement;
|
|
|
|
nsIContent* focusedNode = aWindow->GetFocusedElement();
|
|
bool isRefocus = focusedNode && focusedNode->IsEqualNode(aElement);
|
|
|
|
aWindow->SetFocusedElement(aElement, focusMethod);
|
|
|
|
// if the focused element changed, scroll it into view
|
|
if (aElement && aFocusChanged) {
|
|
ScrollIntoView(presShell, aElement, aFlags);
|
|
}
|
|
|
|
bool sendFocusEvent = aElement && aElement->IsInComposedDoc() &&
|
|
!IsNonFocusableRoot(aElement);
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
if (sendFocusEvent) {
|
|
NotifyFocusStateChange(aElement, nullptr, aWindow->ShouldShowFocusRing(),
|
|
true);
|
|
|
|
// if this is an object/plug-in/remote browser, focus its widget. Note
|
|
// that we might no longer be in the same document, due to the events we
|
|
// fired above when aIsNewDocument.
|
|
if (presShell->GetDocument() == aElement->GetComposedDoc()) {
|
|
if (aAdjustWidgets && objectFrameWidget && !sTestMode) {
|
|
objectFrameWidget->SetFocus(nsIWidget::Raise::No);
|
|
}
|
|
|
|
// if the object being focused is a remote browser, activate remote
|
|
// content
|
|
ActivateRemoteFrameIfNeeded(*aElement);
|
|
}
|
|
|
|
IMEStateManager::OnChangeFocus(presContext, aElement,
|
|
GetFocusMoveActionCause(aFlags));
|
|
|
|
// as long as this focus wasn't because a window was raised, update the
|
|
// commands
|
|
// XXXndeakin P2 someone could adjust the focus during the update
|
|
if (!aWindowRaised)
|
|
aWindow->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
|
|
SendFocusOrBlurEvent(eFocus, presShell, aElement->GetComposedDoc(),
|
|
aElement, aFlags & FOCUSMETHOD_MASK, aWindowRaised,
|
|
isRefocus, aContentLostFocus);
|
|
} else {
|
|
IMEStateManager::OnChangeFocus(presContext, nullptr,
|
|
GetFocusMoveActionCause(aFlags));
|
|
if (!aWindowRaised) {
|
|
aWindow->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
}
|
|
}
|
|
} else {
|
|
// If the window focus event (fired above when aIsNewDocument) caused
|
|
// the plugin not to be focusable, update the system focus by focusing
|
|
// the root widget.
|
|
if (aAdjustWidgets && objectFrameWidget && mFocusedWindow == aWindow &&
|
|
mFocusedElement == nullptr && !sTestMode) {
|
|
if (nsViewManager* vm = presShell->GetViewManager()) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (widget) {
|
|
widget->SetFocus(nsIWidget::Raise::No);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mFocusedElement) {
|
|
// When there is no focused element, IMEStateManager needs to adjust IME
|
|
// enabled state with the document.
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
IMEStateManager::OnChangeFocus(presContext, nullptr,
|
|
GetFocusMoveActionCause(aFlags));
|
|
}
|
|
|
|
if (!aWindowRaised)
|
|
aWindow->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
}
|
|
|
|
// update the caret visibility and position to match the newly focused
|
|
// element. However, don't update the position if this was a focus due to a
|
|
// mouse click as the selection code would already have moved the caret as
|
|
// needed. If this is a different document than was focused before, also
|
|
// update the caret's visibility. If this is the same document, the caret
|
|
// visibility should be the same as before so there is no need to update it.
|
|
if (mFocusedElement == aElement)
|
|
UpdateCaret(aFocusChanged && !(aFlags & FLAG_BYMOUSE), aIsNewDocument,
|
|
mFocusedElement);
|
|
|
|
if (clearFirstFocusEvent) mFirstFocusEvent = nullptr;
|
|
}
|
|
|
|
class FocusBlurEvent : public Runnable {
|
|
public:
|
|
FocusBlurEvent(nsISupports* aTarget, EventMessage aEventMessage,
|
|
nsPresContext* aContext, bool aWindowRaised, bool aIsRefocus,
|
|
EventTarget* aRelatedTarget)
|
|
: mozilla::Runnable("FocusBlurEvent"),
|
|
mTarget(aTarget),
|
|
mContext(aContext),
|
|
mEventMessage(aEventMessage),
|
|
mWindowRaised(aWindowRaised),
|
|
mIsRefocus(aIsRefocus),
|
|
mRelatedTarget(aRelatedTarget) {}
|
|
|
|
NS_IMETHOD Run() override {
|
|
InternalFocusEvent event(true, mEventMessage);
|
|
event.mFlags.mBubbles = false;
|
|
event.mFlags.mCancelable = false;
|
|
event.mFromRaise = mWindowRaised;
|
|
event.mIsRefocus = mIsRefocus;
|
|
event.mRelatedTarget = mRelatedTarget;
|
|
return EventDispatcher::Dispatch(mTarget, mContext, &event);
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> mTarget;
|
|
RefPtr<nsPresContext> mContext;
|
|
EventMessage mEventMessage;
|
|
bool mWindowRaised;
|
|
bool mIsRefocus;
|
|
nsCOMPtr<EventTarget> mRelatedTarget;
|
|
};
|
|
|
|
class FocusInOutEvent : public Runnable {
|
|
public:
|
|
FocusInOutEvent(nsISupports* aTarget, EventMessage aEventMessage,
|
|
nsPresContext* aContext,
|
|
nsPIDOMWindowOuter* aOriginalFocusedWindow,
|
|
nsIContent* aOriginalFocusedContent,
|
|
EventTarget* aRelatedTarget)
|
|
: mozilla::Runnable("FocusInOutEvent"),
|
|
mTarget(aTarget),
|
|
mContext(aContext),
|
|
mEventMessage(aEventMessage),
|
|
mOriginalFocusedWindow(aOriginalFocusedWindow),
|
|
mOriginalFocusedContent(aOriginalFocusedContent),
|
|
mRelatedTarget(aRelatedTarget) {}
|
|
|
|
NS_IMETHOD Run() override {
|
|
nsCOMPtr<nsIContent> originalWindowFocus =
|
|
mOriginalFocusedWindow ? mOriginalFocusedWindow->GetFocusedElement()
|
|
: nullptr;
|
|
// Blink does not check that focus is the same after blur, but WebKit does.
|
|
// Opt to follow Blink's behavior (see bug 687787).
|
|
if (mEventMessage == eFocusOut ||
|
|
originalWindowFocus == mOriginalFocusedContent) {
|
|
InternalFocusEvent event(true, mEventMessage);
|
|
event.mFlags.mBubbles = true;
|
|
event.mFlags.mCancelable = false;
|
|
event.mRelatedTarget = mRelatedTarget;
|
|
return EventDispatcher::Dispatch(mTarget, mContext, &event);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> mTarget;
|
|
RefPtr<nsPresContext> mContext;
|
|
EventMessage mEventMessage;
|
|
nsCOMPtr<nsPIDOMWindowOuter> mOriginalFocusedWindow;
|
|
nsCOMPtr<nsIContent> mOriginalFocusedContent;
|
|
nsCOMPtr<EventTarget> mRelatedTarget;
|
|
};
|
|
|
|
static Document* GetDocumentHelper(EventTarget* aTarget) {
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aTarget);
|
|
if (!node) {
|
|
nsCOMPtr<nsPIDOMWindowInner> win = do_QueryInterface(aTarget);
|
|
return win ? win->GetExtantDoc() : nullptr;
|
|
}
|
|
|
|
return node->OwnerDoc();
|
|
}
|
|
|
|
void nsFocusManager::FireFocusInOrOutEvent(
|
|
EventMessage aEventMessage, PresShell* aPresShell, nsISupports* aTarget,
|
|
nsPIDOMWindowOuter* aCurrentFocusedWindow,
|
|
nsIContent* aCurrentFocusedContent, EventTarget* aRelatedTarget) {
|
|
NS_ASSERTION(aEventMessage == eFocusIn || aEventMessage == eFocusOut,
|
|
"Wrong event type for FireFocusInOrOutEvent");
|
|
|
|
nsContentUtils::AddScriptRunner(new FocusInOutEvent(
|
|
aTarget, aEventMessage, aPresShell->GetPresContext(),
|
|
aCurrentFocusedWindow, aCurrentFocusedContent, aRelatedTarget));
|
|
}
|
|
|
|
void nsFocusManager::SendFocusOrBlurEvent(
|
|
EventMessage aEventMessage, PresShell* aPresShell, Document* aDocument,
|
|
nsISupports* aTarget, uint32_t aFocusMethod, bool aWindowRaised,
|
|
bool aIsRefocus, EventTarget* aRelatedTarget) {
|
|
NS_ASSERTION(aEventMessage == eFocus || aEventMessage == eBlur,
|
|
"Wrong event type for SendFocusOrBlurEvent");
|
|
|
|
nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
|
|
nsCOMPtr<Document> eventTargetDoc = GetDocumentHelper(eventTarget);
|
|
nsCOMPtr<Document> relatedTargetDoc = GetDocumentHelper(aRelatedTarget);
|
|
|
|
// set aRelatedTarget to null if it's not in the same document as eventTarget
|
|
if (eventTargetDoc != relatedTargetDoc) {
|
|
aRelatedTarget = nullptr;
|
|
}
|
|
|
|
bool dontDispatchEvent =
|
|
eventTargetDoc && nsContentUtils::IsUserFocusIgnored(eventTargetDoc);
|
|
|
|
if (!dontDispatchEvent && aDocument && aDocument->EventHandlingSuppressed()) {
|
|
for (uint32_t i = mDelayedBlurFocusEvents.Length(); i > 0; --i) {
|
|
// if this event was already queued, remove it and append it to the end
|
|
if (mDelayedBlurFocusEvents[i - 1].mEventMessage == aEventMessage &&
|
|
mDelayedBlurFocusEvents[i - 1].mPresShell == aPresShell &&
|
|
mDelayedBlurFocusEvents[i - 1].mDocument == aDocument &&
|
|
mDelayedBlurFocusEvents[i - 1].mTarget == eventTarget &&
|
|
mDelayedBlurFocusEvents[i - 1].mRelatedTarget == aRelatedTarget) {
|
|
mDelayedBlurFocusEvents.RemoveElementAt(i - 1);
|
|
}
|
|
}
|
|
|
|
mDelayedBlurFocusEvents.AppendElement(nsDelayedBlurOrFocusEvent(
|
|
aEventMessage, aPresShell, aDocument, eventTarget, aRelatedTarget));
|
|
return;
|
|
}
|
|
|
|
// If mDelayedBlurFocusEvents queue is not empty, check if there are events
|
|
// that belongs to this doc, if yes, fire them first.
|
|
if (aDocument && !aDocument->EventHandlingSuppressed() &&
|
|
mDelayedBlurFocusEvents.Length()) {
|
|
FireDelayedEvents(aDocument);
|
|
}
|
|
|
|
FireFocusOrBlurEvent(aEventMessage, aPresShell, aTarget, aWindowRaised,
|
|
aIsRefocus, aRelatedTarget);
|
|
}
|
|
|
|
void nsFocusManager::FireFocusOrBlurEvent(EventMessage aEventMessage,
|
|
PresShell* aPresShell,
|
|
nsISupports* aTarget,
|
|
bool aWindowRaised, bool aIsRefocus,
|
|
EventTarget* aRelatedTarget) {
|
|
nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
|
|
nsCOMPtr<Document> eventTargetDoc = GetDocumentHelper(eventTarget);
|
|
nsCOMPtr<nsPIDOMWindowOuter> currentWindow = mFocusedWindow;
|
|
nsCOMPtr<nsPIDOMWindowInner> targetWindow = do_QueryInterface(aTarget);
|
|
nsCOMPtr<Document> targetDocument = do_QueryInterface(aTarget);
|
|
nsCOMPtr<nsIContent> currentFocusedContent =
|
|
currentWindow ? currentWindow->GetFocusedElement() : nullptr;
|
|
|
|
bool dontDispatchEvent =
|
|
eventTargetDoc && nsContentUtils::IsUserFocusIgnored(eventTargetDoc);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = GetAccService();
|
|
if (accService) {
|
|
if (aEventMessage == eFocus) {
|
|
accService->NotifyOfDOMFocus(aTarget);
|
|
} else {
|
|
accService->NotifyOfDOMBlur(aTarget);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (!dontDispatchEvent) {
|
|
nsContentUtils::AddScriptRunner(
|
|
new FocusBlurEvent(aTarget, aEventMessage, aPresShell->GetPresContext(),
|
|
aWindowRaised, aIsRefocus, aRelatedTarget));
|
|
|
|
// Check that the target is not a window or document before firing
|
|
// focusin/focusout. Other browsers do not fire focusin/focusout on window,
|
|
// despite being required in the spec, so follow their behavior.
|
|
//
|
|
// As for document, we should not even fire focus/blur, but until then, we
|
|
// need this check. targetDocument should be removed once bug 1228802 is
|
|
// resolved.
|
|
if (!targetWindow && !targetDocument) {
|
|
EventMessage focusInOrOutMessage =
|
|
aEventMessage == eFocus ? eFocusIn : eFocusOut;
|
|
FireFocusInOrOutEvent(focusInOrOutMessage, aPresShell, aTarget,
|
|
currentWindow, currentFocusedContent,
|
|
aRelatedTarget);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsFocusManager::ScrollIntoView(PresShell* aPresShell, nsIContent* aContent,
|
|
uint32_t aFlags) {
|
|
// if the noscroll flag isn't set, scroll the newly focused element into view
|
|
if (!(aFlags & FLAG_NOSCROLL)) {
|
|
ScrollFlags scrollFlags = ScrollFlags::ScrollOverflowHidden;
|
|
if (!(aFlags & FLAG_BYELEMENTFOCUS)) {
|
|
scrollFlags |= ScrollFlags::IgnoreMarginAndPadding;
|
|
}
|
|
aPresShell->ScrollContentIntoView(
|
|
aContent, ScrollAxis(kScrollMinimum, WhenToScroll::IfNotVisible),
|
|
ScrollAxis(kScrollMinimum, WhenToScroll::IfNotVisible), scrollFlags);
|
|
}
|
|
}
|
|
|
|
void nsFocusManager::RaiseWindow(nsPIDOMWindowOuter* aWindow) {
|
|
// don't raise windows that are already raised or are in the process of
|
|
// being lowered
|
|
if (!aWindow || aWindow == mActiveWindow || aWindow == mWindowBeingLowered)
|
|
return;
|
|
|
|
if (sTestMode) {
|
|
// In test mode, emulate the existing window being lowered and the new
|
|
// window being raised. This happens in a separate runnable to avoid
|
|
// touching multiple windows in the current runnable.
|
|
nsCOMPtr<nsPIDOMWindowOuter> active(mActiveWindow);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window(aWindow);
|
|
RefPtr<nsFocusManager> self(this);
|
|
NS_DispatchToCurrentThread(NS_NewRunnableFunction(
|
|
"nsFocusManager::RaiseWindow", [self, active, window]() -> void {
|
|
if (active) {
|
|
self->WindowLowered(active);
|
|
}
|
|
self->WindowRaised(window);
|
|
}));
|
|
return;
|
|
}
|
|
|
|
#if defined(XP_WIN)
|
|
// Windows would rather we focus the child widget, otherwise, the toplevel
|
|
// widget will always end up being focused. Fortunately, focusing the child
|
|
// widget will also have the effect of raising the window this widget is in.
|
|
// But on other platforms, we can just focus the toplevel widget to raise
|
|
// the window.
|
|
nsCOMPtr<nsPIDOMWindowOuter> childWindow;
|
|
GetFocusedDescendant(aWindow, eIncludeAllDescendants,
|
|
getter_AddRefs(childWindow));
|
|
if (!childWindow) childWindow = aWindow;
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (!docShell) return;
|
|
|
|
PresShell* presShell = docShell->GetPresShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
|
|
if (nsViewManager* vm = presShell->GetViewManager()) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (widget) widget->SetFocus(nsIWidget::Raise::Yes);
|
|
}
|
|
#else
|
|
nsCOMPtr<nsIBaseWindow> treeOwnerAsWin =
|
|
do_QueryInterface(aWindow->GetDocShell());
|
|
if (treeOwnerAsWin) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
treeOwnerAsWin->GetMainWidget(getter_AddRefs(widget));
|
|
if (widget) widget->SetFocus(nsIWidget::Raise::Yes);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void nsFocusManager::UpdateCaretForCaretBrowsingMode() {
|
|
UpdateCaret(false, true, mFocusedElement);
|
|
}
|
|
|
|
void nsFocusManager::UpdateCaret(bool aMoveCaretToFocus, bool aUpdateVisibility,
|
|
nsIContent* aContent) {
|
|
LOGFOCUS(("Update Caret: %d %d", aMoveCaretToFocus, aUpdateVisibility));
|
|
|
|
if (!mFocusedWindow) return;
|
|
|
|
// this is called when a document is focused or when the caretbrowsing
|
|
// preference is changed
|
|
nsCOMPtr<nsIDocShell> focusedDocShell = mFocusedWindow->GetDocShell();
|
|
if (!focusedDocShell) {
|
|
return;
|
|
}
|
|
|
|
if (focusedDocShell->ItemType() == nsIDocShellTreeItem::typeChrome) {
|
|
return; // Never browse with caret in chrome
|
|
}
|
|
|
|
bool browseWithCaret = Preferences::GetBool("accessibility.browsewithcaret");
|
|
|
|
RefPtr<PresShell> presShell = focusedDocShell->GetPresShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
|
|
// If this is an editable document which isn't contentEditable, or a
|
|
// contentEditable document and the node to focus is contentEditable,
|
|
// return, so that we don't mess with caret visibility.
|
|
bool isEditable = false;
|
|
focusedDocShell->GetEditable(&isEditable);
|
|
|
|
if (isEditable) {
|
|
Document* doc = presShell->GetDocument();
|
|
|
|
bool isContentEditableDoc =
|
|
doc &&
|
|
doc->GetEditingState() == Document::EditingState::eContentEditable;
|
|
|
|
bool isFocusEditable = aContent && aContent->HasFlag(NODE_IS_EDITABLE);
|
|
if (!isContentEditableDoc || isFocusEditable) return;
|
|
}
|
|
|
|
if (!isEditable && aMoveCaretToFocus) {
|
|
MoveCaretToFocus(presShell, aContent);
|
|
}
|
|
|
|
if (!aUpdateVisibility) return;
|
|
|
|
// XXXndeakin this doesn't seem right. It should be checking for this only
|
|
// on the nearest ancestor frame which is a chrome frame. But this is
|
|
// what the existing code does, so just leave it for now.
|
|
if (!browseWithCaret) {
|
|
nsCOMPtr<Element> docElement = mFocusedWindow->GetFrameElementInternal();
|
|
if (docElement)
|
|
browseWithCaret =
|
|
docElement->AttrValueIs(kNameSpaceID_None, nsGkAtoms::showcaret,
|
|
NS_LITERAL_STRING("true"), eCaseMatters);
|
|
}
|
|
|
|
SetCaretVisible(presShell, browseWithCaret, aContent);
|
|
}
|
|
|
|
void nsFocusManager::MoveCaretToFocus(PresShell* aPresShell,
|
|
nsIContent* aContent) {
|
|
nsCOMPtr<Document> doc = aPresShell->GetDocument();
|
|
if (doc) {
|
|
RefPtr<nsFrameSelection> frameSelection = aPresShell->FrameSelection();
|
|
RefPtr<Selection> domSelection =
|
|
frameSelection->GetSelection(SelectionType::eNormal);
|
|
if (domSelection) {
|
|
// First clear the selection. This way, if there is no currently focused
|
|
// content, the selection will just be cleared.
|
|
domSelection->RemoveAllRanges(IgnoreErrors());
|
|
if (aContent) {
|
|
ErrorResult rv;
|
|
RefPtr<nsRange> newRange = doc->CreateRange(rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
rv.SuppressException();
|
|
return;
|
|
}
|
|
|
|
// Set the range to the start of the currently focused node
|
|
// Make sure it's collapsed
|
|
newRange->SelectNodeContents(*aContent, IgnoreErrors());
|
|
|
|
if (!aContent->GetFirstChild() ||
|
|
aContent->IsNodeOfType(nsINode::eHTML_FORM_CONTROL)) {
|
|
// If current focus node is a leaf, set range to before the
|
|
// node by using the parent as a container.
|
|
// This prevents it from appearing as selected.
|
|
newRange->SetStartBefore(*aContent, IgnoreErrors());
|
|
newRange->SetEndBefore(*aContent, IgnoreErrors());
|
|
}
|
|
domSelection->AddRangeAndSelectFramesAndNotifyListeners(*newRange,
|
|
IgnoreErrors());
|
|
domSelection->CollapseToStart(IgnoreErrors());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult nsFocusManager::SetCaretVisible(PresShell* aPresShell, bool aVisible,
|
|
nsIContent* aContent) {
|
|
// When browsing with caret, make sure caret is visible after new focus
|
|
// Return early if there is no caret. This can happen for the testcase
|
|
// for bug 308025 where a window is closed in a blur handler.
|
|
RefPtr<nsCaret> caret = aPresShell->GetCaret();
|
|
if (!caret) return NS_OK;
|
|
|
|
bool caretVisible = caret->IsVisible();
|
|
if (!aVisible && !caretVisible) return NS_OK;
|
|
|
|
RefPtr<nsFrameSelection> frameSelection;
|
|
if (aContent) {
|
|
NS_ASSERTION(aContent->GetComposedDoc() == aPresShell->GetDocument(),
|
|
"Wrong document?");
|
|
nsIFrame* focusFrame = aContent->GetPrimaryFrame();
|
|
if (focusFrame) frameSelection = focusFrame->GetFrameSelection();
|
|
}
|
|
|
|
RefPtr<nsFrameSelection> docFrameSelection = aPresShell->FrameSelection();
|
|
|
|
if (docFrameSelection && caret &&
|
|
(frameSelection == docFrameSelection || !aContent)) {
|
|
Selection* domSelection =
|
|
docFrameSelection->GetSelection(SelectionType::eNormal);
|
|
if (domSelection) {
|
|
// First, hide the caret to prevent attempting to show it in
|
|
// SetCaretDOMSelection
|
|
aPresShell->SetCaretEnabled(false);
|
|
|
|
// Caret must blink on non-editable elements
|
|
caret->SetIgnoreUserModify(true);
|
|
// Tell the caret which selection to use
|
|
caret->SetSelection(domSelection);
|
|
|
|
// In content, we need to set the caret. The only special case is edit
|
|
// fields, which have a different frame selection from the document.
|
|
// They will take care of making the caret visible themselves.
|
|
|
|
aPresShell->SetCaretReadOnly(false);
|
|
aPresShell->SetCaretEnabled(aVisible);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsFocusManager::GetSelectionLocation(Document* aDocument,
|
|
PresShell* aPresShell,
|
|
nsIContent** aStartContent,
|
|
nsIContent** aEndContent) {
|
|
*aStartContent = *aEndContent = nullptr;
|
|
nsPresContext* presContext = aPresShell->GetPresContext();
|
|
NS_ASSERTION(presContext, "mPresContent is null!!");
|
|
|
|
RefPtr<nsFrameSelection> frameSelection = aPresShell->FrameSelection();
|
|
|
|
RefPtr<Selection> domSelection;
|
|
if (frameSelection) {
|
|
domSelection = frameSelection->GetSelection(SelectionType::eNormal);
|
|
}
|
|
|
|
bool isCollapsed = false;
|
|
nsCOMPtr<nsIContent> startContent, endContent;
|
|
uint32_t startOffset = 0;
|
|
if (domSelection) {
|
|
isCollapsed = domSelection->IsCollapsed();
|
|
RefPtr<nsRange> domRange = domSelection->GetRangeAt(0);
|
|
if (domRange) {
|
|
nsCOMPtr<nsINode> startNode = domRange->GetStartContainer();
|
|
nsCOMPtr<nsINode> endNode = domRange->GetEndContainer();
|
|
startOffset = domRange->StartOffset();
|
|
|
|
nsIContent* childContent = nullptr;
|
|
|
|
startContent = do_QueryInterface(startNode);
|
|
if (startContent && startContent->IsElement()) {
|
|
childContent = startContent->GetChildAt_Deprecated(startOffset);
|
|
if (childContent) {
|
|
startContent = childContent;
|
|
}
|
|
}
|
|
|
|
endContent = do_QueryInterface(endNode);
|
|
if (endContent && endContent->IsElement()) {
|
|
uint32_t endOffset = domRange->EndOffset();
|
|
childContent = endContent->GetChildAt_Deprecated(endOffset);
|
|
if (childContent) {
|
|
endContent = childContent;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
nsIFrame* startFrame = nullptr;
|
|
if (startContent) {
|
|
startFrame = startContent->GetPrimaryFrame();
|
|
if (isCollapsed) {
|
|
// Next check to see if our caret is at the very end of a node
|
|
// If so, the caret is actually sitting in front of the next
|
|
// logical frame's primary node - so for this case we need to
|
|
// change caretContent to that node.
|
|
|
|
if (startContent->NodeType() == nsINode::TEXT_NODE) {
|
|
nsAutoString nodeValue;
|
|
startContent->GetAsText()->AppendTextTo(nodeValue);
|
|
|
|
bool isFormControl =
|
|
startContent->IsNodeOfType(nsINode::eHTML_FORM_CONTROL);
|
|
|
|
if (nodeValue.Length() == startOffset && !isFormControl &&
|
|
startContent != aDocument->GetRootElement()) {
|
|
// Yes, indeed we were at the end of the last node
|
|
nsCOMPtr<nsIFrameEnumerator> frameTraversal;
|
|
nsresult rv = NS_NewFrameTraversal(getter_AddRefs(frameTraversal),
|
|
presContext, startFrame, eLeaf,
|
|
false, // aVisual
|
|
false, // aLockInScrollView
|
|
true, // aFollowOOFs
|
|
false // aSkipPopupChecks
|
|
);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsIFrame* newCaretFrame = nullptr;
|
|
nsCOMPtr<nsIContent> newCaretContent = startContent;
|
|
bool endOfSelectionInStartNode(startContent == endContent);
|
|
do {
|
|
// Continue getting the next frame until the primary content for the
|
|
// frame we are on changes - we don't want to be stuck in the same
|
|
// place
|
|
frameTraversal->Next();
|
|
newCaretFrame =
|
|
static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
if (nullptr == newCaretFrame) break;
|
|
newCaretContent = newCaretFrame->GetContent();
|
|
} while (!newCaretContent || newCaretContent == startContent);
|
|
|
|
if (newCaretFrame && newCaretContent) {
|
|
// If the caret is exactly at the same position of the new frame,
|
|
// then we can use the newCaretFrame and newCaretContent for our
|
|
// position
|
|
nsRect caretRect;
|
|
nsIFrame* frame = nsCaret::GetGeometry(domSelection, &caretRect);
|
|
if (frame) {
|
|
nsPoint caretWidgetOffset;
|
|
nsIWidget* widget = frame->GetNearestWidget(caretWidgetOffset);
|
|
caretRect.MoveBy(caretWidgetOffset);
|
|
nsPoint newCaretOffset;
|
|
nsIWidget* newCaretWidget =
|
|
newCaretFrame->GetNearestWidget(newCaretOffset);
|
|
if (widget == newCaretWidget && caretRect.y == newCaretOffset.y &&
|
|
caretRect.x == newCaretOffset.x) {
|
|
// The caret is at the start of the new element.
|
|
startFrame = newCaretFrame;
|
|
startContent = newCaretContent;
|
|
if (endOfSelectionInStartNode) {
|
|
endContent = newCaretContent; // Ensure end of selection is
|
|
// not before start
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
*aStartContent = startContent;
|
|
*aEndContent = endContent;
|
|
NS_IF_ADDREF(*aStartContent);
|
|
NS_IF_ADDREF(*aEndContent);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsFocusManager::DetermineElementToMoveFocus(
|
|
nsPIDOMWindowOuter* aWindow, nsIContent* aStartContent, int32_t aType,
|
|
bool aNoParentTraversal, nsIContent** aNextContent) {
|
|
*aNextContent = nullptr;
|
|
|
|
// True if we are navigating by document (F6/Shift+F6) or false if we are
|
|
// navigating by element (Tab/Shift+Tab).
|
|
bool forDocumentNavigation = false;
|
|
|
|
// This is used for document navigation only. It will be set to true if we
|
|
// start navigating from a starting point. If this starting point is near the
|
|
// end of the document (for example, an element on a statusbar), and there
|
|
// are no child documents or panels before the end of the document, then we
|
|
// will need to ensure that we don't consider the root chrome window when we
|
|
// loop around and instead find the next child document/panel, as focus is
|
|
// already in that window. This flag will be cleared once we navigate into
|
|
// another document.
|
|
bool mayFocusRoot = (aStartContent != nullptr);
|
|
|
|
nsCOMPtr<nsIContent> startContent = aStartContent;
|
|
if (!startContent && aType != MOVEFOCUS_CARET) {
|
|
if (aType == MOVEFOCUS_FORWARDDOC || aType == MOVEFOCUS_BACKWARDDOC) {
|
|
// When moving between documents, make sure to get the right
|
|
// starting content in a descendant.
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
|
|
startContent = GetFocusedDescendant(aWindow, eIncludeAllDescendants,
|
|
getter_AddRefs(focusedWindow));
|
|
} else if (aType != MOVEFOCUS_LASTDOC) {
|
|
// Otherwise, start at the focused node. If MOVEFOCUS_LASTDOC is used,
|
|
// then we are document-navigating backwards from chrome to the content
|
|
// process, and we don't want to use this so that we start from the end
|
|
// of the document.
|
|
startContent = aWindow->GetFocusedElement();
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<Document> doc;
|
|
if (startContent)
|
|
doc = startContent->GetComposedDoc();
|
|
else
|
|
doc = aWindow->GetExtantDoc();
|
|
if (!doc) return NS_OK;
|
|
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_TabFocusModel,
|
|
&nsIContent::sTabFocusModel);
|
|
|
|
// These types are for document navigation using F6.
|
|
if (aType == MOVEFOCUS_FORWARDDOC || aType == MOVEFOCUS_BACKWARDDOC ||
|
|
aType == MOVEFOCUS_FIRSTDOC || aType == MOVEFOCUS_LASTDOC) {
|
|
forDocumentNavigation = true;
|
|
}
|
|
|
|
// If moving to the root or first document, find the root element and return.
|
|
if (aType == MOVEFOCUS_ROOT || aType == MOVEFOCUS_FIRSTDOC) {
|
|
NS_IF_ADDREF(*aNextContent = GetRootForFocus(aWindow, doc, false, false));
|
|
if (!*aNextContent && aType == MOVEFOCUS_FIRSTDOC) {
|
|
// When looking for the first document, if the root wasn't focusable,
|
|
// find the next focusable document.
|
|
aType = MOVEFOCUS_FORWARDDOC;
|
|
} else {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
Element* rootContent = doc->GetRootElement();
|
|
NS_ENSURE_TRUE(rootContent, NS_OK);
|
|
|
|
PresShell* presShell = doc->GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_OK);
|
|
|
|
if (aType == MOVEFOCUS_FIRST) {
|
|
if (!aStartContent) startContent = rootContent;
|
|
return GetNextTabbableContent(presShell, startContent, nullptr,
|
|
startContent, true, 1, false, false,
|
|
aNextContent);
|
|
}
|
|
if (aType == MOVEFOCUS_LAST) {
|
|
if (!aStartContent) startContent = rootContent;
|
|
return GetNextTabbableContent(presShell, startContent, nullptr,
|
|
startContent, false, 0, false, false,
|
|
aNextContent);
|
|
}
|
|
|
|
bool forward = (aType == MOVEFOCUS_FORWARD || aType == MOVEFOCUS_FORWARDDOC ||
|
|
aType == MOVEFOCUS_CARET);
|
|
bool doNavigation = true;
|
|
bool ignoreTabIndex = false;
|
|
// when a popup is open, we want to ensure that tab navigation occurs only
|
|
// within the most recently opened panel. If a popup is open, its frame will
|
|
// be stored in popupFrame.
|
|
nsIFrame* popupFrame = nullptr;
|
|
|
|
int32_t tabIndex = forward ? 1 : 0;
|
|
if (startContent) {
|
|
nsIFrame* frame = startContent->GetPrimaryFrame();
|
|
if (startContent->IsHTMLElement(nsGkAtoms::area))
|
|
startContent->IsFocusable(&tabIndex);
|
|
else if (frame)
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
else
|
|
startContent->IsFocusable(&tabIndex);
|
|
|
|
// if the current element isn't tabbable, ignore the tabindex and just
|
|
// look for the next element. The root content won't have a tabindex
|
|
// so just treat this as the beginning of the tab order.
|
|
if (tabIndex < 0) {
|
|
tabIndex = 1;
|
|
if (startContent != rootContent) ignoreTabIndex = true;
|
|
}
|
|
|
|
// check if the focus is currently inside a popup. Elements such as the
|
|
// autocomplete widget use the noautofocus attribute to allow the focus to
|
|
// remain outside the popup when it is opened.
|
|
if (frame) {
|
|
popupFrame = nsLayoutUtils::GetClosestFrameOfType(
|
|
frame, LayoutFrameType::MenuPopup);
|
|
}
|
|
|
|
if (popupFrame && !forDocumentNavigation) {
|
|
// Don't navigate outside of a popup, so pretend that the
|
|
// root content is the popup itself
|
|
rootContent = popupFrame->GetContent()->AsElement();
|
|
NS_ASSERTION(rootContent, "Popup frame doesn't have a content node");
|
|
} else if (!forward) {
|
|
// If focus moves backward and when current focused node is root
|
|
// content or <body> element which is editable by contenteditable
|
|
// attribute, focus should move to its parent document.
|
|
if (startContent == rootContent) {
|
|
doNavigation = false;
|
|
} else {
|
|
Document* doc = startContent->GetComposedDoc();
|
|
if (startContent ==
|
|
nsLayoutUtils::GetEditableRootContentByContentEditable(doc)) {
|
|
doNavigation = false;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
#ifdef MOZ_XUL
|
|
if (aType != MOVEFOCUS_CARET) {
|
|
// if there is no focus, yet a panel is open, focus the first item in
|
|
// the panel
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) popupFrame = pm->GetTopPopup(ePopupTypePanel);
|
|
}
|
|
#endif
|
|
if (popupFrame) {
|
|
// When there is a popup open, and no starting content, start the search
|
|
// at the topmost popup.
|
|
startContent = popupFrame->GetContent();
|
|
NS_ASSERTION(startContent, "Popup frame doesn't have a content node");
|
|
// Unless we are searching for documents, set the root content to the
|
|
// popup as well, so that we don't tab-navigate outside the popup.
|
|
// When navigating by documents, we start at the popup but can navigate
|
|
// outside of it to look for other panels and documents.
|
|
if (!forDocumentNavigation) {
|
|
rootContent = startContent->AsElement();
|
|
}
|
|
|
|
doc = startContent ? startContent->GetComposedDoc() : nullptr;
|
|
} else {
|
|
// Otherwise, for content shells, start from the location of the caret.
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (docShell && docShell->ItemType() != nsIDocShellTreeItem::typeChrome) {
|
|
nsCOMPtr<nsIContent> endSelectionContent;
|
|
GetSelectionLocation(doc, presShell, getter_AddRefs(startContent),
|
|
getter_AddRefs(endSelectionContent));
|
|
// If the selection is on the rootContent, then there is no selection
|
|
if (startContent == rootContent) {
|
|
startContent = nullptr;
|
|
}
|
|
|
|
if (aType == MOVEFOCUS_CARET) {
|
|
// GetFocusInSelection finds a focusable link near the caret.
|
|
// If there is no start content though, don't do this to avoid
|
|
// focusing something unexpected.
|
|
if (startContent) {
|
|
GetFocusInSelection(aWindow, startContent, endSelectionContent,
|
|
aNextContent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (startContent) {
|
|
// when starting from a selection, we always want to find the next or
|
|
// previous element in the document. So the tabindex on elements
|
|
// should be ignored.
|
|
ignoreTabIndex = true;
|
|
}
|
|
}
|
|
|
|
if (!startContent) {
|
|
// otherwise, just use the root content as the starting point
|
|
startContent = rootContent;
|
|
NS_ENSURE_TRUE(startContent, NS_OK);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check if the starting content is the same as the content assigned to the
|
|
// retargetdocumentfocus attribute. Is so, we don't want to start searching
|
|
// from there but instead from the beginning of the document. Otherwise, the
|
|
// content that appears before the retargetdocumentfocus element will never
|
|
// get checked as it will be skipped when the focus is retargetted to it.
|
|
if (forDocumentNavigation && nsContentUtils::IsChromeDoc(doc)) {
|
|
nsAutoString retarget;
|
|
|
|
if (rootContent->GetAttr(kNameSpaceID_None,
|
|
nsGkAtoms::retargetdocumentfocus, retarget)) {
|
|
nsIContent* retargetElement = doc->GetElementById(retarget);
|
|
// The common case here is the urlbar where focus is on the anonymous
|
|
// input inside the textbox, but the retargetdocumentfocus attribute
|
|
// refers to the textbox. The Contains check will return false and the
|
|
// IsInclusiveDescendantOf check will return true in this case.
|
|
if (retargetElement &&
|
|
(retargetElement == startContent ||
|
|
(!retargetElement->Contains(startContent) &&
|
|
startContent->IsInclusiveDescendantOf(retargetElement)))) {
|
|
startContent = rootContent;
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(startContent, "starting content not set");
|
|
|
|
// keep a reference to the starting content. If we find that again, it means
|
|
// we've iterated around completely and we don't want to adjust the focus.
|
|
// The skipOriginalContentCheck will be set to true only for the first time
|
|
// GetNextTabbableContent is called. This ensures that we don't break out
|
|
// when nothing is focused to start with. Specifically,
|
|
// GetNextTabbableContent first checks the root content -- which happens to
|
|
// be the same as the start content -- when nothing is focused and tabbing
|
|
// forward. Without skipOriginalContentCheck set to true, we'd end up
|
|
// returning right away and focusing nothing. Luckily, GetNextTabbableContent
|
|
// will never wrap around on its own, and can only return the original
|
|
// content when it is called a second time or later.
|
|
bool skipOriginalContentCheck = true;
|
|
nsIContent* originalStartContent = startContent;
|
|
|
|
LOGCONTENTNAVIGATION("Focus Navigation Start Content %s", startContent.get());
|
|
LOGFOCUSNAVIGATION((" Forward: %d Tabindex: %d Ignore: %d DocNav: %d",
|
|
forward, tabIndex, ignoreTabIndex,
|
|
forDocumentNavigation));
|
|
|
|
while (doc) {
|
|
if (doNavigation) {
|
|
nsCOMPtr<nsIContent> nextFocus;
|
|
nsresult rv = GetNextTabbableContent(
|
|
presShell, rootContent,
|
|
skipOriginalContentCheck ? nullptr : originalStartContent,
|
|
startContent, forward, tabIndex, ignoreTabIndex,
|
|
forDocumentNavigation, getter_AddRefs(nextFocus));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (rv == NS_SUCCESS_DOM_NO_OPERATION) {
|
|
// Navigation was redirected to a child process, so just return.
|
|
return NS_OK;
|
|
}
|
|
|
|
// found a content node to focus.
|
|
if (nextFocus) {
|
|
LOGCONTENTNAVIGATION("Next Content: %s", nextFocus.get());
|
|
|
|
// as long as the found node was not the same as the starting node,
|
|
// set it as the return value. For document navigation, we can return
|
|
// the same element in case there is only one content node that could
|
|
// be returned, for example, in a child process document.
|
|
if (nextFocus != originalStartContent || forDocumentNavigation) {
|
|
nextFocus.forget(aNextContent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (popupFrame && !forDocumentNavigation) {
|
|
// in a popup, so start again from the beginning of the popup. However,
|
|
// if we already started at the beginning, then there isn't anything to
|
|
// focus, so just return
|
|
if (startContent != rootContent) {
|
|
startContent = rootContent;
|
|
tabIndex = forward ? 1 : 0;
|
|
continue;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
doNavigation = true;
|
|
skipOriginalContentCheck = forDocumentNavigation;
|
|
ignoreTabIndex = false;
|
|
|
|
if (aNoParentTraversal) {
|
|
if (startContent == rootContent) return NS_OK;
|
|
|
|
startContent = rootContent;
|
|
tabIndex = forward ? 1 : 0;
|
|
continue;
|
|
}
|
|
|
|
// Reached the beginning or end of the document. Next, navigate up to the
|
|
// parent document and try again.
|
|
nsCOMPtr<nsPIDOMWindowOuter> piWindow = doc->GetWindow();
|
|
NS_ENSURE_TRUE(piWindow, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = piWindow->GetDocShell();
|
|
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
|
|
|
|
// Get the frame element this window is inside and, from that, get the
|
|
// parent document and presshell. If there is no enclosing frame element,
|
|
// then this is a top-level, embedded or remote window.
|
|
startContent = piWindow->GetFrameElementInternal();
|
|
if (startContent) {
|
|
doc = startContent->GetComposedDoc();
|
|
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
|
|
|
|
rootContent = doc->GetRootElement();
|
|
presShell = doc->GetPresShell();
|
|
|
|
// We can focus the root element now that we have moved to another
|
|
// document.
|
|
mayFocusRoot = true;
|
|
|
|
nsIFrame* frame = startContent->GetPrimaryFrame();
|
|
if (!frame) {
|
|
return NS_OK;
|
|
}
|
|
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
if (tabIndex < 0) {
|
|
tabIndex = 1;
|
|
ignoreTabIndex = true;
|
|
}
|
|
|
|
// if the frame is inside a popup, make sure to scan only within the
|
|
// popup. This handles the situation of tabbing amongst elements
|
|
// inside an iframe which is itself inside a popup. Otherwise,
|
|
// navigation would move outside the popup when tabbing outside the
|
|
// iframe.
|
|
if (!forDocumentNavigation) {
|
|
popupFrame = nsLayoutUtils::GetClosestFrameOfType(
|
|
frame, LayoutFrameType::MenuPopup);
|
|
if (popupFrame) {
|
|
rootContent = popupFrame->GetContent()->AsElement();
|
|
NS_ASSERTION(rootContent, "Popup frame doesn't have a content node");
|
|
}
|
|
}
|
|
} else {
|
|
// There is no parent, so call the tree owner. This will tell the
|
|
// embedder or parent process that it should take the focus.
|
|
bool tookFocus;
|
|
docShell->TabToTreeOwner(forward, forDocumentNavigation, &tookFocus);
|
|
// If the tree owner took the focus, blur the current element.
|
|
if (tookFocus) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = docShell->GetWindow();
|
|
if (window->GetFocusedElement() == mFocusedElement)
|
|
Blur(mFocusedWindow, nullptr, true, true);
|
|
else
|
|
window->SetFocusedElement(nullptr);
|
|
return NS_OK;
|
|
}
|
|
|
|
// If we have reached the end of the top-level document, focus the
|
|
// first element in the top-level document. This should always happen
|
|
// when navigating by document forwards but when navigating backwards,
|
|
// only do this if we started in another document or within a popup frame.
|
|
// If the focus started in this window outside a popup however, we should
|
|
// continue by looping around to the end again.
|
|
if (forDocumentNavigation && (forward || mayFocusRoot || popupFrame)) {
|
|
// HTML content documents can have their root element focused (a focus
|
|
// ring appears around the entire content area frame). This root
|
|
// appears in the tab order before all of the elements in the document.
|
|
// Chrome documents however cannot be focused directly, so instead we
|
|
// focus the first focusable element within the window.
|
|
// For example, the urlbar.
|
|
Element* root = GetRootForFocus(piWindow, doc, true, true);
|
|
return FocusFirst(root, aNextContent);
|
|
}
|
|
|
|
// Once we have hit the top-level and have iterated to the end again, we
|
|
// just want to break out next time we hit this spot to prevent infinite
|
|
// iteration.
|
|
mayFocusRoot = true;
|
|
|
|
// reset the tab index and start again from the beginning or end
|
|
startContent = rootContent;
|
|
tabIndex = forward ? 1 : 0;
|
|
}
|
|
|
|
// wrapped all the way around and didn't find anything to move the focus
|
|
// to, so just break out
|
|
if (startContent == originalStartContent) break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t nsFocusManager::FocusOptionsToFocusManagerFlags(
|
|
const mozilla::dom::FocusOptions& aOptions) {
|
|
return aOptions.mPreventScroll ? nsIFocusManager::FLAG_NOSCROLL : 0;
|
|
}
|
|
|
|
static bool IsHostOrSlot(const nsIContent* aContent) {
|
|
return aContent && (aContent->GetShadowRoot() ||
|
|
aContent->IsHTMLElement(nsGkAtoms::slot));
|
|
}
|
|
|
|
// Helper class to iterate contents in scope by traversing flattened tree
|
|
// in tree order
|
|
class MOZ_STACK_CLASS ScopedContentTraversal {
|
|
public:
|
|
ScopedContentTraversal(nsIContent* aStartContent, nsIContent* aOwner)
|
|
: mCurrent(aStartContent), mOwner(aOwner) {
|
|
MOZ_ASSERT(aStartContent);
|
|
}
|
|
|
|
void Next();
|
|
void Prev();
|
|
|
|
void Reset() { SetCurrent(mOwner); }
|
|
|
|
nsIContent* GetCurrent() const { return mCurrent; }
|
|
|
|
private:
|
|
void SetCurrent(nsIContent* aContent) { mCurrent = aContent; }
|
|
|
|
nsIContent* mCurrent;
|
|
nsIContent* mOwner;
|
|
};
|
|
|
|
void ScopedContentTraversal::Next() {
|
|
MOZ_ASSERT(mCurrent);
|
|
|
|
// Get mCurrent's first child if it's in the same scope.
|
|
if (!IsHostOrSlot(mCurrent) || mCurrent == mOwner) {
|
|
StyleChildrenIterator iter(mCurrent);
|
|
nsIContent* child = iter.GetNextChild();
|
|
if (child) {
|
|
SetCurrent(child);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// If mOwner has no children, END traversal
|
|
if (mCurrent == mOwner) {
|
|
SetCurrent(nullptr);
|
|
return;
|
|
}
|
|
|
|
nsIContent* current = mCurrent;
|
|
while (1) {
|
|
// Create parent's iterator and move to current
|
|
nsIContent* parent = current->GetFlattenedTreeParent();
|
|
StyleChildrenIterator parentIter(parent);
|
|
parentIter.Seek(current);
|
|
|
|
// Get next sibling of current
|
|
if (nsIContent* next = parentIter.GetNextChild()) {
|
|
SetCurrent(next);
|
|
return;
|
|
}
|
|
|
|
// If no next sibling and parent is mOwner, END traversal
|
|
if (parent == mOwner) {
|
|
SetCurrent(nullptr);
|
|
return;
|
|
}
|
|
|
|
current = parent;
|
|
}
|
|
}
|
|
|
|
void ScopedContentTraversal::Prev() {
|
|
MOZ_ASSERT(mCurrent);
|
|
|
|
nsIContent* parent;
|
|
nsIContent* last;
|
|
if (mCurrent == mOwner) {
|
|
// Get last child of mOwner
|
|
StyleChildrenIterator ownerIter(mOwner, false /* aStartAtBeginning */);
|
|
last = ownerIter.GetPreviousChild();
|
|
|
|
parent = last;
|
|
} else {
|
|
// Create parent's iterator and move to mCurrent
|
|
parent = mCurrent->GetFlattenedTreeParent();
|
|
StyleChildrenIterator parentIter(parent);
|
|
parentIter.Seek(mCurrent);
|
|
|
|
// Get previous sibling
|
|
last = parentIter.GetPreviousChild();
|
|
}
|
|
|
|
while (last) {
|
|
parent = last;
|
|
if (IsHostOrSlot(parent)) {
|
|
// Skip contents in other scopes
|
|
break;
|
|
}
|
|
|
|
// Find last child
|
|
StyleChildrenIterator iter(parent, false /* aStartAtBeginning */);
|
|
last = iter.GetPreviousChild();
|
|
}
|
|
|
|
// If parent is mOwner and no previous sibling remains, END traversal
|
|
SetCurrent(parent == mOwner ? nullptr : parent);
|
|
}
|
|
|
|
/**
|
|
* Returns scope owner of aContent.
|
|
* A scope owner is either a document root, shadow host, or slot.
|
|
*/
|
|
static nsIContent* FindOwner(nsIContent* aContent) {
|
|
nsIContent* currentContent = aContent;
|
|
while (currentContent) {
|
|
nsIContent* parent = currentContent->GetFlattenedTreeParent();
|
|
|
|
// Shadow host / Slot
|
|
if (IsHostOrSlot(parent)) {
|
|
return parent;
|
|
}
|
|
|
|
currentContent = parent;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* Host and Slot elements need to be handled as if they had tabindex 0 even
|
|
* when they don't have the attribute. This is a helper method to get the
|
|
* right value for focus navigation. If aIsFocusable is passed, it is set to
|
|
* true if the element itself is focusable.
|
|
*/
|
|
static int32_t HostOrSlotTabIndexValue(const nsIContent* aContent,
|
|
bool* aIsFocusable = nullptr) {
|
|
MOZ_ASSERT(IsHostOrSlot(aContent));
|
|
|
|
if (aIsFocusable) {
|
|
*aIsFocusable = false;
|
|
nsIFrame* frame = aContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
int32_t tabIndex;
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
*aIsFocusable = tabIndex >= 0;
|
|
}
|
|
}
|
|
|
|
const nsAttrValue* attrVal =
|
|
aContent->AsElement()->GetParsedAttr(nsGkAtoms::tabindex);
|
|
if (!attrVal) {
|
|
return 0;
|
|
}
|
|
|
|
if (attrVal->Type() == nsAttrValue::eInteger) {
|
|
return attrVal->GetIntegerValue();
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
nsIContent* nsFocusManager::GetNextTabbableContentInScope(
|
|
nsIContent* aOwner, nsIContent* aStartContent,
|
|
nsIContent* aOriginalStartContent, bool aForward, int32_t aCurrentTabIndex,
|
|
bool aIgnoreTabIndex, bool aForDocumentNavigation, bool aSkipOwner) {
|
|
MOZ_ASSERT(IsHostOrSlot(aOwner), "Scope owner should be host or slot");
|
|
|
|
if (!aSkipOwner && (aForward && aOwner == aStartContent)) {
|
|
int32_t tabIndex = -1;
|
|
nsIFrame* frame = aOwner->GetPrimaryFrame();
|
|
if (frame && frame->IsFocusable(&tabIndex, false) && tabIndex >= 0) {
|
|
return aOwner;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Iterate contents in scope
|
|
//
|
|
ScopedContentTraversal contentTraversal(aStartContent, aOwner);
|
|
nsCOMPtr<nsIContent> iterContent;
|
|
nsIContent* firstNonChromeOnly =
|
|
aStartContent->IsInNativeAnonymousSubtree()
|
|
? aStartContent->FindFirstNonChromeOnlyAccessContent()
|
|
: nullptr;
|
|
while (1) {
|
|
// Iterate tab index to find corresponding contents in scope
|
|
|
|
while (1) {
|
|
// Iterate remaining contents in scope to find next content to focus
|
|
|
|
// Get next content
|
|
aForward ? contentTraversal.Next() : contentTraversal.Prev();
|
|
iterContent = contentTraversal.GetCurrent();
|
|
|
|
if (firstNonChromeOnly && firstNonChromeOnly == iterContent) {
|
|
// We just broke out from the native anonymous content, so move
|
|
// to the previous/next node of the native anonymous owner.
|
|
if (aForward) {
|
|
contentTraversal.Next();
|
|
} else {
|
|
contentTraversal.Prev();
|
|
}
|
|
iterContent = contentTraversal.GetCurrent();
|
|
}
|
|
if (!iterContent) {
|
|
// Reach the end
|
|
break;
|
|
}
|
|
|
|
int32_t tabIndex = 0;
|
|
if (iterContent->IsInNativeAnonymousSubtree() &&
|
|
iterContent->GetPrimaryFrame()) {
|
|
iterContent->GetPrimaryFrame()->IsFocusable(&tabIndex);
|
|
} else if (IsHostOrSlot(iterContent)) {
|
|
tabIndex = HostOrSlotTabIndexValue(iterContent);
|
|
} else {
|
|
nsIFrame* frame = iterContent->GetPrimaryFrame();
|
|
if (!frame) {
|
|
continue;
|
|
}
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
}
|
|
if (tabIndex < 0 || !(aIgnoreTabIndex || tabIndex == aCurrentTabIndex)) {
|
|
continue;
|
|
}
|
|
|
|
if (!IsHostOrSlot(iterContent)) {
|
|
nsCOMPtr<nsIContent> elementInFrame;
|
|
bool checkSubDocument = true;
|
|
if (aForDocumentNavigation &&
|
|
TryDocumentNavigation(iterContent, &checkSubDocument,
|
|
getter_AddRefs(elementInFrame))) {
|
|
return elementInFrame;
|
|
}
|
|
if (!checkSubDocument) {
|
|
continue;
|
|
}
|
|
|
|
if (TryToMoveFocusToSubDocument(iterContent, aOriginalStartContent,
|
|
aForward, aForDocumentNavigation,
|
|
getter_AddRefs(elementInFrame))) {
|
|
return elementInFrame;
|
|
}
|
|
|
|
// Found content to focus
|
|
return iterContent;
|
|
}
|
|
|
|
// Search in scope owned by iterContent
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
iterContent, iterContent, aOriginalStartContent, aForward,
|
|
aForward ? 1 : 0, aIgnoreTabIndex, aForDocumentNavigation,
|
|
false /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
return contentToFocus;
|
|
}
|
|
};
|
|
|
|
// If already at lowest priority tab (0), end search completely.
|
|
// A bit counterintuitive but true, tabindex order goes 1, 2, ... 32767, 0
|
|
if (aCurrentTabIndex == (aForward ? 0 : 1)) {
|
|
break;
|
|
}
|
|
|
|
// We've been just trying to find some focusable element, and haven't, so
|
|
// bail out.
|
|
if (aIgnoreTabIndex) {
|
|
break;
|
|
}
|
|
|
|
// Continue looking for next highest priority tabindex
|
|
aCurrentTabIndex = GetNextTabIndex(aOwner, aCurrentTabIndex, aForward);
|
|
contentTraversal.Reset();
|
|
}
|
|
|
|
// Return scope owner at last for backward navigation if its tabindex
|
|
// is non-negative
|
|
if (!aSkipOwner && !aForward) {
|
|
int32_t tabIndex = -1;
|
|
nsIFrame* frame = aOwner->GetPrimaryFrame();
|
|
if (frame && frame->IsFocusable(&tabIndex, false) && tabIndex >= 0) {
|
|
return aOwner;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent* nsFocusManager::GetNextTabbableContentInAncestorScopes(
|
|
nsIContent* aStartOwner, nsIContent** aStartContent,
|
|
nsIContent* aOriginalStartContent, bool aForward, int32_t* aCurrentTabIndex,
|
|
bool aIgnoreTabIndex, bool aForDocumentNavigation) {
|
|
MOZ_ASSERT(aStartOwner == FindOwner(*aStartContent),
|
|
"aStartOWner should be the scope owner of aStartContent");
|
|
MOZ_ASSERT(IsHostOrSlot(aStartOwner), "scope owner should be host or slot");
|
|
|
|
nsIContent* owner = aStartOwner;
|
|
nsIContent* startContent = *aStartContent;
|
|
while (IsHostOrSlot(owner)) {
|
|
int32_t tabIndex = 0;
|
|
if (IsHostOrSlot(startContent)) {
|
|
tabIndex = HostOrSlotTabIndexValue(startContent);
|
|
} else if (nsIFrame* frame = startContent->GetPrimaryFrame()) {
|
|
frame->IsFocusable(&tabIndex);
|
|
} else {
|
|
startContent->IsFocusable(&tabIndex);
|
|
}
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
owner, startContent, aOriginalStartContent, aForward, tabIndex,
|
|
aIgnoreTabIndex, aForDocumentNavigation, false /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
return contentToFocus;
|
|
}
|
|
|
|
startContent = owner;
|
|
owner = FindOwner(startContent);
|
|
}
|
|
|
|
// If not found in shadow DOM, search from the top level shadow host in light
|
|
// DOM
|
|
*aStartContent = startContent;
|
|
*aCurrentTabIndex = HostOrSlotTabIndexValue(startContent);
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
static nsIContent* GetTopLevelScopeOwner(nsIContent* aContent) {
|
|
nsIContent* topLevelScopeOwner = nullptr;
|
|
while (aContent) {
|
|
if (HTMLSlotElement* slot = aContent->GetAssignedSlot()) {
|
|
aContent = slot;
|
|
} else if (ShadowRoot* shadowRoot = aContent->GetContainingShadow()) {
|
|
aContent = shadowRoot->Host();
|
|
topLevelScopeOwner = aContent;
|
|
} else {
|
|
if (HTMLSlotElement::FromNode(aContent)) {
|
|
topLevelScopeOwner = aContent;
|
|
}
|
|
aContent = aContent->GetParent();
|
|
}
|
|
}
|
|
|
|
return topLevelScopeOwner;
|
|
}
|
|
|
|
nsresult nsFocusManager::GetNextTabbableContent(
|
|
PresShell* aPresShell, nsIContent* aRootContent,
|
|
nsIContent* aOriginalStartContent, nsIContent* aStartContent, bool aForward,
|
|
int32_t aCurrentTabIndex, bool aIgnoreTabIndex, bool aForDocumentNavigation,
|
|
nsIContent** aResultContent) {
|
|
*aResultContent = nullptr;
|
|
|
|
nsCOMPtr<nsIContent> startContent = aStartContent;
|
|
if (!startContent) return NS_OK;
|
|
|
|
nsIContent* currentTopLevelScopeOwner = GetTopLevelScopeOwner(aStartContent);
|
|
|
|
LOGCONTENTNAVIGATION("GetNextTabbable: %s", aStartContent);
|
|
LOGFOCUSNAVIGATION((" tabindex: %d", aCurrentTabIndex));
|
|
|
|
// If aStartContent is a shadow host or slot in forward navigation,
|
|
// search in scope owned by aStartContent
|
|
if (aForward && IsHostOrSlot(aStartContent)) {
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
aStartContent, aStartContent, aOriginalStartContent, aForward,
|
|
aForward ? 1 : 0, aIgnoreTabIndex, aForDocumentNavigation,
|
|
true /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
NS_ADDREF(*aResultContent = contentToFocus);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// If aStartContent is in a scope owned by Shadow DOM search from scope
|
|
// including aStartContent
|
|
if (nsIContent* owner = FindOwner(aStartContent)) {
|
|
nsIContent* contentToFocus = GetNextTabbableContentInAncestorScopes(
|
|
owner, &aStartContent, aOriginalStartContent, aForward,
|
|
&aCurrentTabIndex, aIgnoreTabIndex, aForDocumentNavigation);
|
|
if (contentToFocus) {
|
|
NS_ADDREF(*aResultContent = contentToFocus);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// If we reach here, it means no next tabbable content in shadow DOM.
|
|
// We need to continue searching in light DOM, starting at the top level
|
|
// shadow host in light DOM (updated aStartContent) and its tabindex
|
|
// (updated aCurrentTabIndex).
|
|
MOZ_ASSERT(!FindOwner(aStartContent),
|
|
"aStartContent should not be owned by Shadow DOM at this point");
|
|
|
|
nsPresContext* presContext = aPresShell->GetPresContext();
|
|
|
|
bool getNextFrame = true;
|
|
nsCOMPtr<nsIContent> iterStartContent = aStartContent;
|
|
// Iterate tab index to find corresponding contents
|
|
while (1) {
|
|
nsIFrame* frame = iterStartContent->GetPrimaryFrame();
|
|
// if there is no frame, look for another content node that has a frame
|
|
while (!frame) {
|
|
// if the root content doesn't have a frame, just return
|
|
if (iterStartContent == aRootContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// look for the next or previous content node in tree order
|
|
iterStartContent = aForward ? iterStartContent->GetNextNode()
|
|
: iterStartContent->GetPreviousContent();
|
|
if (!iterStartContent) {
|
|
break;
|
|
}
|
|
|
|
frame = iterStartContent->GetPrimaryFrame();
|
|
// Host without frame, enter its scope.
|
|
if (!frame && iterStartContent->GetShadowRoot()) {
|
|
int32_t tabIndex = HostOrSlotTabIndexValue(iterStartContent);
|
|
if (tabIndex >= 0 &&
|
|
(aIgnoreTabIndex || aCurrentTabIndex == tabIndex)) {
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
iterStartContent, iterStartContent, aOriginalStartContent,
|
|
aForward, aForward ? 1 : 0, aIgnoreTabIndex,
|
|
aForDocumentNavigation, true /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
NS_ADDREF(*aResultContent = contentToFocus);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
// we've already skipped over the initial focused content, so we
|
|
// don't want to traverse frames.
|
|
getNextFrame = false;
|
|
}
|
|
|
|
nsCOMPtr<nsIFrameEnumerator> frameTraversal;
|
|
if (frame) {
|
|
// For tab navigation, pass false for aSkipPopupChecks so that we don't
|
|
// iterate into or out of a popup. For document naviation pass true to
|
|
// ignore these boundaries.
|
|
nsresult rv = NS_NewFrameTraversal(
|
|
getter_AddRefs(frameTraversal), presContext, frame, ePreOrder,
|
|
false, // aVisual
|
|
false, // aLockInScrollView
|
|
true, // aFollowOOFs
|
|
aForDocumentNavigation // aSkipPopupChecks
|
|
);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (iterStartContent == aRootContent) {
|
|
if (!aForward) {
|
|
frameTraversal->Last();
|
|
} else if (aRootContent->IsFocusable()) {
|
|
frameTraversal->Next();
|
|
}
|
|
frame = static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
} else if (getNextFrame &&
|
|
(!iterStartContent ||
|
|
!iterStartContent->IsHTMLElement(nsGkAtoms::area))) {
|
|
// Need to do special check in case we're in an imagemap which has
|
|
// multiple content nodes per frame, so don't skip over the starting
|
|
// frame.
|
|
if (aForward) {
|
|
frameTraversal->Next();
|
|
} else {
|
|
frameTraversal->Prev();
|
|
}
|
|
|
|
frame = static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
}
|
|
}
|
|
|
|
// Walk frames to find something tabbable matching aCurrentTabIndex
|
|
while (frame) {
|
|
// Try to find the topmost scope owner, since we want to skip the node
|
|
// that is not owned by document in frame traversal.
|
|
nsIContent* currentContent = frame->GetContent();
|
|
nsIContent* oldTopLevelScopeOwner = currentTopLevelScopeOwner;
|
|
if (!aForward || oldTopLevelScopeOwner != currentContent) {
|
|
currentTopLevelScopeOwner = GetTopLevelScopeOwner(currentContent);
|
|
} else {
|
|
currentTopLevelScopeOwner = currentContent;
|
|
}
|
|
if (currentTopLevelScopeOwner &&
|
|
currentTopLevelScopeOwner == oldTopLevelScopeOwner) {
|
|
// We're within non-document scope, continue.
|
|
do {
|
|
if (aForward) {
|
|
frameTraversal->Next();
|
|
} else {
|
|
frameTraversal->Prev();
|
|
}
|
|
frame = static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
// For the usage of GetPrevContinuation, see the comment
|
|
// at the end of while (frame) loop.
|
|
} while (frame && frame->GetPrevContinuation());
|
|
continue;
|
|
}
|
|
|
|
// For document navigation, check if this element is an open panel. Since
|
|
// panels aren't focusable (tabIndex would be -1), we'll just assume that
|
|
// for document navigation, the tabIndex is 0.
|
|
if (aForDocumentNavigation && currentContent && (aCurrentTabIndex == 0) &&
|
|
currentContent->IsXULElement(nsGkAtoms::panel)) {
|
|
nsMenuPopupFrame* popupFrame = do_QueryFrame(frame);
|
|
// Check if the panel is open. Closed panels are ignored since you can't
|
|
// focus anything in them.
|
|
if (popupFrame && popupFrame->IsOpen()) {
|
|
// When moving backward, skip the popup we started in otherwise it
|
|
// will be selected again.
|
|
bool validPopup = true;
|
|
if (!aForward) {
|
|
nsIContent* content = aStartContent;
|
|
while (content) {
|
|
if (content == currentContent) {
|
|
validPopup = false;
|
|
break;
|
|
}
|
|
|
|
content = content->GetParent();
|
|
}
|
|
}
|
|
|
|
if (validPopup) {
|
|
// Since a panel isn't focusable itself, find the first focusable
|
|
// content within the popup. If there isn't any focusable content
|
|
// in the popup, skip this popup and continue iterating through the
|
|
// frames. We pass the panel itself (currentContent) as the starting
|
|
// and root content, so that we only find content within the panel.
|
|
// Note also that we pass false for aForDocumentNavigation since we
|
|
// want to locate the first content, not the first document.
|
|
nsresult rv = GetNextTabbableContent(
|
|
aPresShell, currentContent, nullptr, currentContent, true, 1,
|
|
false, false, aResultContent);
|
|
if (NS_SUCCEEDED(rv) && *aResultContent) {
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// As of now, 2018/04/12, sequential focus navigation is still
|
|
// in the obsolete Shadow DOM specification.
|
|
// http://w3c.github.io/webcomponents/spec/shadow/#sequential-focus-navigation
|
|
// "if ELEMENT is focusable, a shadow host, or a slot element,
|
|
// append ELEMENT to NAVIGATION-ORDER."
|
|
// and later in "For each element ELEMENT in NAVIGATION-ORDER: "
|
|
// hosts and slots are handled before other elements.
|
|
if (IsHostOrSlot(currentTopLevelScopeOwner)) {
|
|
bool focusableHostSlot;
|
|
int32_t tabIndex = HostOrSlotTabIndexValue(currentTopLevelScopeOwner,
|
|
&focusableHostSlot);
|
|
// Host or slot itself isn't focusable or going backwards, enter its
|
|
// scope.
|
|
if ((!aForward || !focusableHostSlot) && tabIndex >= 0 &&
|
|
(aIgnoreTabIndex || aCurrentTabIndex == tabIndex)) {
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
currentTopLevelScopeOwner, currentTopLevelScopeOwner,
|
|
aOriginalStartContent, aForward, aForward ? 1 : 0,
|
|
aIgnoreTabIndex, aForDocumentNavigation, true /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
NS_ADDREF(*aResultContent = contentToFocus);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
// TabIndex not set defaults to 0 for form elements, anchors and other
|
|
// elements that are normally focusable. Tabindex defaults to -1
|
|
// for elements that are not normally focusable.
|
|
// The returned computed tabindex from IsFocusable() is as follows:
|
|
// clang-format off
|
|
// < 0 not tabbable at all
|
|
// == 0 in normal tab order (last after positive tabindexed items)
|
|
// > 0 can be tabbed to in the order specified by this value
|
|
// clang-format on
|
|
int32_t tabIndex;
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
|
|
LOGCONTENTNAVIGATION("Next Tabbable %s:", frame->GetContent());
|
|
LOGFOCUSNAVIGATION(
|
|
(" with tabindex: %d expected: %d", tabIndex, aCurrentTabIndex));
|
|
|
|
if (tabIndex >= 0) {
|
|
NS_ASSERTION(currentContent,
|
|
"IsFocusable set a tabindex for a frame with no content");
|
|
if (!aForDocumentNavigation &&
|
|
currentContent->IsHTMLElement(nsGkAtoms::img) &&
|
|
currentContent->AsElement()->HasAttr(kNameSpaceID_None,
|
|
nsGkAtoms::usemap)) {
|
|
// This is an image with a map. Image map areas are not traversed by
|
|
// nsIFrameTraversal so look for the next or previous area element.
|
|
nsIContent* areaContent = GetNextTabbableMapArea(
|
|
aForward, aCurrentTabIndex, currentContent->AsElement(),
|
|
iterStartContent);
|
|
if (areaContent) {
|
|
NS_ADDREF(*aResultContent = areaContent);
|
|
return NS_OK;
|
|
}
|
|
} else if (aIgnoreTabIndex || aCurrentTabIndex == tabIndex) {
|
|
// break out if we've wrapped around to the start again.
|
|
if (aOriginalStartContent &&
|
|
currentContent == aOriginalStartContent) {
|
|
NS_ADDREF(*aResultContent = currentContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
// If this is a remote child browser, call NavigateDocument to have
|
|
// the child process continue the navigation. Return a special error
|
|
// code to have the caller return early. If the child ends up not
|
|
// being focusable in some way, the child process will call back
|
|
// into document navigation again by calling MoveFocus.
|
|
BrowserParent* remote = BrowserParent::GetFrom(currentContent);
|
|
if (remote) {
|
|
remote->NavigateByKey(aForward, aForDocumentNavigation);
|
|
return NS_SUCCESS_DOM_NO_OPERATION;
|
|
}
|
|
|
|
// Same as above but for out-of-process iframes
|
|
BrowserBridgeChild* bbc = BrowserBridgeChild::GetFrom(currentContent);
|
|
if (bbc) {
|
|
bbc->NavigateByKey(aForward, aForDocumentNavigation);
|
|
return NS_SUCCESS_DOM_NO_OPERATION;
|
|
}
|
|
|
|
// Next, for document navigation, check if this a non-remote child
|
|
// document.
|
|
bool checkSubDocument = true;
|
|
if (aForDocumentNavigation &&
|
|
TryDocumentNavigation(currentContent, &checkSubDocument,
|
|
aResultContent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (checkSubDocument) {
|
|
// found a node with a matching tab index. Check if it is a child
|
|
// frame. If so, navigate into the child frame instead.
|
|
if (TryToMoveFocusToSubDocument(
|
|
currentContent, aOriginalStartContent, aForward,
|
|
aForDocumentNavigation, aResultContent)) {
|
|
MOZ_ASSERT(*aResultContent);
|
|
return NS_OK;
|
|
}
|
|
// otherwise, use this as the next content node to tab to, unless
|
|
// this was the element we started on. This would happen for
|
|
// instance on an element with child frames, where frame navigation
|
|
// could return the original element again. In that case, just skip
|
|
// it. Also, if the next content node is the root content, then
|
|
// return it. This latter case would happen only if someone made a
|
|
// popup focusable.
|
|
// Also, when going backwards, check to ensure that the focus
|
|
// wouldn't be redirected. Otherwise, for example, when an input in
|
|
// a textbox is focused, the enclosing textbox would be found and
|
|
// the same inner input would be returned again.
|
|
else if (currentContent == aRootContent ||
|
|
(currentContent != startContent &&
|
|
(aForward || !GetRedirectedFocus(currentContent)))) {
|
|
NS_ADDREF(*aResultContent = currentContent);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
} else if (aOriginalStartContent &&
|
|
currentContent == aOriginalStartContent) {
|
|
// not focusable, so return if we have wrapped around to the original
|
|
// content. This is necessary in case the original starting content was
|
|
// not focusable.
|
|
NS_ADDREF(*aResultContent = currentContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Move to the next or previous frame, but ignore continuation frames
|
|
// since only the first frame should be involved in focusability.
|
|
// Otherwise, a loop will occur in the following example:
|
|
// <span tabindex="1">...<a/><a/>...</span>
|
|
// where the text wraps onto multiple lines. Tabbing from the second
|
|
// link can find one of the span's continuation frames between the link
|
|
// and the end of the span, and the span would end up getting focused
|
|
// again.
|
|
do {
|
|
if (aForward)
|
|
frameTraversal->Next();
|
|
else
|
|
frameTraversal->Prev();
|
|
frame = static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
} while (frame && frame->GetPrevContinuation());
|
|
}
|
|
|
|
// If already at lowest priority tab (0), end search completely.
|
|
// A bit counterintuitive but true, tabindex order goes 1, 2, ... 32767, 0
|
|
if (aCurrentTabIndex == (aForward ? 0 : 1)) {
|
|
// if going backwards, the canvas should be focused once the beginning
|
|
// has been reached, so get the root element.
|
|
if (!aForward) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = GetCurrentWindow(aRootContent);
|
|
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
|
|
|
|
RefPtr<Element> docRoot = GetRootForFocus(
|
|
window, aRootContent->GetComposedDoc(), false, true);
|
|
FocusFirst(docRoot, aResultContent);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// continue looking for next highest priority tabindex
|
|
aCurrentTabIndex =
|
|
GetNextTabIndex(aRootContent, aCurrentTabIndex, aForward);
|
|
startContent = iterStartContent = aRootContent;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool nsFocusManager::TryDocumentNavigation(nsIContent* aCurrentContent,
|
|
bool* aCheckSubDocument,
|
|
nsIContent** aResultContent) {
|
|
*aCheckSubDocument = true;
|
|
Element* docRoot = GetRootForChildDocument(aCurrentContent);
|
|
if (docRoot) {
|
|
// If GetRootForChildDocument returned something then call
|
|
// FocusFirst to find the root or first element to focus within
|
|
// the child document. If this is a frameset though, skip this and
|
|
// fall through to normal tab navigation to iterate into
|
|
// the frameset's frames and locate the first focusable frame.
|
|
if (!docRoot->IsHTMLElement(nsGkAtoms::frameset)) {
|
|
*aCheckSubDocument = false;
|
|
Unused << FocusFirst(docRoot, aResultContent);
|
|
return *aResultContent != nullptr;
|
|
}
|
|
} else {
|
|
// Set aCheckSubDocument to false, as this was neither a frame
|
|
// type element or a child document that was focusable.
|
|
*aCheckSubDocument = false;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsFocusManager::TryToMoveFocusToSubDocument(
|
|
nsIContent* aCurrentContent, nsIContent* aOriginalStartContent,
|
|
bool aForward, bool aForDocumentNavigation, nsIContent** aResultContent) {
|
|
Document* doc = aCurrentContent->GetComposedDoc();
|
|
NS_ASSERTION(doc, "content not in document");
|
|
Document* subdoc = doc->GetSubDocumentFor(aCurrentContent);
|
|
if (subdoc && !subdoc->EventHandlingSuppressed()) {
|
|
if (aForward) {
|
|
// When tabbing forward into a frame, return the root
|
|
// frame so that the canvas becomes focused.
|
|
nsCOMPtr<nsPIDOMWindowOuter> subframe = subdoc->GetWindow();
|
|
if (subframe) {
|
|
*aResultContent = GetRootForFocus(subframe, subdoc, false, true);
|
|
if (*aResultContent) {
|
|
NS_ADDREF(*aResultContent);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
Element* rootElement = subdoc->GetRootElement();
|
|
PresShell* subPresShell = subdoc->GetPresShell();
|
|
if (rootElement && subPresShell) {
|
|
nsresult rv = GetNextTabbableContent(
|
|
subPresShell, rootElement, aOriginalStartContent, rootElement,
|
|
aForward, (aForward ? 1 : 0), false, aForDocumentNavigation,
|
|
aResultContent);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
if (*aResultContent) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsIContent* nsFocusManager::GetNextTabbableMapArea(bool aForward,
|
|
int32_t aCurrentTabIndex,
|
|
Element* aImageContent,
|
|
nsIContent* aStartContent) {
|
|
if (aImageContent->IsInComposedDoc()) {
|
|
HTMLImageElement* imgElement = HTMLImageElement::FromNode(aImageContent);
|
|
// The caller should check the element type, so we can assert here.
|
|
MOZ_ASSERT(imgElement);
|
|
|
|
nsCOMPtr<nsIContent> mapContent = imgElement->FindImageMap();
|
|
if (!mapContent) return nullptr;
|
|
uint32_t count = mapContent->GetChildCount();
|
|
// First see if the the start content is in this map
|
|
|
|
int32_t index = mapContent->ComputeIndexOf(aStartContent);
|
|
int32_t tabIndex;
|
|
if (index < 0 || (aStartContent->IsFocusable(&tabIndex) &&
|
|
tabIndex != aCurrentTabIndex)) {
|
|
// If aStartContent is in this map we must start iterating past it.
|
|
// We skip the case where aStartContent has tabindex == aStartContent
|
|
// since the next tab ordered element might be before it
|
|
// (or after for backwards) in the child list.
|
|
index = aForward ? -1 : (int32_t)count;
|
|
}
|
|
|
|
// GetChildAt_Deprecated will return nullptr if our index < 0 or index >=
|
|
// count
|
|
nsCOMPtr<nsIContent> areaContent;
|
|
while ((areaContent = mapContent->GetChildAt_Deprecated(
|
|
aForward ? ++index : --index)) != nullptr) {
|
|
if (areaContent->IsFocusable(&tabIndex) && tabIndex == aCurrentTabIndex) {
|
|
return areaContent;
|
|
}
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
int32_t nsFocusManager::GetNextTabIndex(nsIContent* aParent,
|
|
int32_t aCurrentTabIndex,
|
|
bool aForward) {
|
|
int32_t tabIndex, childTabIndex;
|
|
StyleChildrenIterator iter(aParent);
|
|
|
|
if (aForward) {
|
|
tabIndex = 0;
|
|
for (nsIContent* child = iter.GetNextChild(); child;
|
|
child = iter.GetNextChild()) {
|
|
// Skip child's descendants if child is a shadow host or slot, as they are
|
|
// in the focus navigation scope owned by child's shadow root
|
|
if (!IsHostOrSlot(child)) {
|
|
childTabIndex = GetNextTabIndex(child, aCurrentTabIndex, aForward);
|
|
if (childTabIndex > aCurrentTabIndex && childTabIndex != tabIndex) {
|
|
tabIndex = (tabIndex == 0 || childTabIndex < tabIndex) ? childTabIndex
|
|
: tabIndex;
|
|
}
|
|
}
|
|
|
|
nsAutoString tabIndexStr;
|
|
if (child->IsElement()) {
|
|
child->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::tabindex,
|
|
tabIndexStr);
|
|
}
|
|
nsresult ec;
|
|
int32_t val = tabIndexStr.ToInteger(&ec);
|
|
if (NS_SUCCEEDED(ec) && val > aCurrentTabIndex && val != tabIndex) {
|
|
tabIndex = (tabIndex == 0 || val < tabIndex) ? val : tabIndex;
|
|
}
|
|
}
|
|
} else { /* !aForward */
|
|
tabIndex = 1;
|
|
for (nsIContent* child = iter.GetNextChild(); child;
|
|
child = iter.GetNextChild()) {
|
|
// Skip child's descendants if child is a shadow host or slot, as they are
|
|
// in the focus navigation scope owned by child's shadow root
|
|
if (!IsHostOrSlot(child)) {
|
|
childTabIndex = GetNextTabIndex(child, aCurrentTabIndex, aForward);
|
|
if ((aCurrentTabIndex == 0 && childTabIndex > tabIndex) ||
|
|
(childTabIndex < aCurrentTabIndex && childTabIndex > tabIndex)) {
|
|
tabIndex = childTabIndex;
|
|
}
|
|
}
|
|
|
|
nsAutoString tabIndexStr;
|
|
if (child->IsElement()) {
|
|
child->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::tabindex,
|
|
tabIndexStr);
|
|
}
|
|
nsresult ec;
|
|
int32_t val = tabIndexStr.ToInteger(&ec);
|
|
if (NS_SUCCEEDED(ec)) {
|
|
if ((aCurrentTabIndex == 0 && val > tabIndex) ||
|
|
(val < aCurrentTabIndex && val > tabIndex)) {
|
|
tabIndex = val;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return tabIndex;
|
|
}
|
|
|
|
nsresult nsFocusManager::FocusFirst(Element* aRootElement,
|
|
nsIContent** aNextContent) {
|
|
if (!aRootElement) {
|
|
return NS_OK;
|
|
}
|
|
|
|
Document* doc = aRootElement->GetComposedDoc();
|
|
if (doc) {
|
|
if (nsContentUtils::IsChromeDoc(doc)) {
|
|
// If the redirectdocumentfocus attribute is set, redirect the focus to a
|
|
// specific element. This is primarily used to retarget the focus to the
|
|
// urlbar during document navigation.
|
|
nsAutoString retarget;
|
|
|
|
if (aRootElement->GetAttr(kNameSpaceID_None,
|
|
nsGkAtoms::retargetdocumentfocus, retarget)) {
|
|
nsCOMPtr<Element> element = doc->GetElementById(retarget);
|
|
nsCOMPtr<nsIContent> retargetElement =
|
|
FlushAndCheckIfFocusable(element, 0);
|
|
if (retargetElement) {
|
|
retargetElement.forget(aNextContent);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = doc->GetDocShell();
|
|
if (docShell->ItemType() == nsIDocShellTreeItem::typeChrome) {
|
|
// If the found content is in a chrome shell, navigate forward one
|
|
// tabbable item so that the first item is focused. Note that we
|
|
// always go forward and not back here.
|
|
PresShell* presShell = doc->GetPresShell();
|
|
if (presShell) {
|
|
return GetNextTabbableContent(presShell, aRootElement, nullptr,
|
|
aRootElement, true, 1, false, false,
|
|
aNextContent);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_ADDREF(*aNextContent = aRootElement);
|
|
return NS_OK;
|
|
}
|
|
|
|
Element* nsFocusManager::GetRootForFocus(nsPIDOMWindowOuter* aWindow,
|
|
Document* aDocument,
|
|
bool aForDocumentNavigation,
|
|
bool aCheckVisibility) {
|
|
if (!aForDocumentNavigation) {
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (docShell->ItemType() == nsIDocShellTreeItem::typeChrome) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (aCheckVisibility && !IsWindowVisible(aWindow)) return nullptr;
|
|
|
|
// If the body is contenteditable, use the editor's root element rather than
|
|
// the actual root element.
|
|
RefPtr<Element> rootElement =
|
|
nsLayoutUtils::GetEditableRootContentByContentEditable(aDocument);
|
|
if (!rootElement || !rootElement->GetPrimaryFrame()) {
|
|
rootElement = aDocument->GetRootElement();
|
|
if (!rootElement) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (aCheckVisibility && !rootElement->GetPrimaryFrame()) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Finally, check if this is a frameset
|
|
if (aDocument && aDocument->IsHTMLOrXHTML()) {
|
|
Element* htmlChild = aDocument->GetHtmlChildElement(nsGkAtoms::frameset);
|
|
if (htmlChild) {
|
|
// In document navigation mode, return the frameset so that navigation
|
|
// descends into the child frames.
|
|
return aForDocumentNavigation ? htmlChild : nullptr;
|
|
}
|
|
}
|
|
|
|
return rootElement;
|
|
}
|
|
|
|
Element* nsFocusManager::GetRootForChildDocument(nsIContent* aContent) {
|
|
// Check for elements that represent child documents, that is, browsers,
|
|
// editors or frames from a frameset. We don't include iframes since we
|
|
// consider them to be an integral part of the same window or page.
|
|
if (!aContent || !(aContent->IsXULElement(nsGkAtoms::browser) ||
|
|
aContent->IsXULElement(nsGkAtoms::editor) ||
|
|
aContent->IsHTMLElement(nsGkAtoms::frame))) {
|
|
return nullptr;
|
|
}
|
|
|
|
Document* doc = aContent->GetComposedDoc();
|
|
if (!doc) {
|
|
return nullptr;
|
|
}
|
|
|
|
Document* subdoc = doc->GetSubDocumentFor(aContent);
|
|
if (!subdoc || subdoc->EventHandlingSuppressed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = subdoc->GetWindow();
|
|
return GetRootForFocus(window, subdoc, true, true);
|
|
}
|
|
|
|
void nsFocusManager::GetFocusInSelection(nsPIDOMWindowOuter* aWindow,
|
|
nsIContent* aStartSelection,
|
|
nsIContent* aEndSelection,
|
|
nsIContent** aFocusedContent) {
|
|
*aFocusedContent = nullptr;
|
|
|
|
nsCOMPtr<nsIContent> testContent = aStartSelection;
|
|
nsCOMPtr<nsIContent> nextTestContent = aEndSelection;
|
|
|
|
nsCOMPtr<nsIContent> currentFocus = aWindow->GetFocusedElement();
|
|
|
|
// We now have the correct start node in selectionContent!
|
|
// Search for focusable elements, starting with selectionContent
|
|
|
|
// Method #1: Keep going up while we look - an ancestor might be focusable
|
|
// We could end the loop earlier, such as when we're no longer
|
|
// in the same frame, by comparing selectionContent->GetPrimaryFrame()
|
|
// with a variable holding the starting selectionContent
|
|
while (testContent) {
|
|
// Keep testing while selectionContent is equal to something,
|
|
// eventually we'll run out of ancestors
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
if (testContent == currentFocus ||
|
|
testContent->IsLink(getter_AddRefs(uri))) {
|
|
testContent.forget(aFocusedContent);
|
|
return;
|
|
}
|
|
|
|
// Get the parent
|
|
testContent = testContent->GetParent();
|
|
|
|
if (!testContent) {
|
|
// We run this loop again, checking the ancestor chain of the selection's
|
|
// end point
|
|
testContent = nextTestContent;
|
|
nextTestContent = nullptr;
|
|
}
|
|
}
|
|
|
|
// We couldn't find an anchor that was an ancestor of the selection start
|
|
// Method #2: look for anchor in selection's primary range (depth first
|
|
// search)
|
|
|
|
nsCOMPtr<nsIContent> selectionNode = aStartSelection;
|
|
nsCOMPtr<nsIContent> endSelectionNode = aEndSelection;
|
|
nsCOMPtr<nsIContent> testNode;
|
|
|
|
do {
|
|
testContent = selectionNode;
|
|
|
|
// We're looking for any focusable link that could be part of the
|
|
// main document's selection.
|
|
nsCOMPtr<nsIURI> uri;
|
|
if (testContent == currentFocus ||
|
|
testContent->IsLink(getter_AddRefs(uri))) {
|
|
testContent.forget(aFocusedContent);
|
|
return;
|
|
}
|
|
|
|
nsIContent* testNode = selectionNode->GetFirstChild();
|
|
if (testNode) {
|
|
selectionNode = testNode;
|
|
continue;
|
|
}
|
|
|
|
if (selectionNode == endSelectionNode) break;
|
|
testNode = selectionNode->GetNextSibling();
|
|
if (testNode) {
|
|
selectionNode = testNode;
|
|
continue;
|
|
}
|
|
|
|
do {
|
|
// GetParent is OK here, instead of GetParentNode, because the only case
|
|
// where the latter returns something different from the former is when
|
|
// GetParentNode is the document. But in that case we would simply get
|
|
// null for selectionNode when setting it to testNode->GetNextSibling()
|
|
// (because a document has no next sibling). And then the next iteration
|
|
// of this loop would get null for GetParentNode anyway, and break out of
|
|
// all the loops.
|
|
testNode = selectionNode->GetParent();
|
|
if (!testNode || testNode == endSelectionNode) {
|
|
selectionNode = nullptr;
|
|
break;
|
|
}
|
|
selectionNode = testNode->GetNextSibling();
|
|
if (selectionNode) break;
|
|
selectionNode = testNode;
|
|
} while (true);
|
|
} while (selectionNode && selectionNode != endSelectionNode);
|
|
}
|
|
|
|
class PointerUnlocker : public Runnable {
|
|
public:
|
|
PointerUnlocker() : mozilla::Runnable("PointerUnlocker") {
|
|
MOZ_ASSERT(!PointerUnlocker::sActiveUnlocker);
|
|
PointerUnlocker::sActiveUnlocker = this;
|
|
}
|
|
|
|
~PointerUnlocker() {
|
|
if (PointerUnlocker::sActiveUnlocker == this) {
|
|
PointerUnlocker::sActiveUnlocker = nullptr;
|
|
}
|
|
}
|
|
|
|
NS_IMETHOD Run() override {
|
|
if (PointerUnlocker::sActiveUnlocker == this) {
|
|
PointerUnlocker::sActiveUnlocker = nullptr;
|
|
}
|
|
NS_ENSURE_STATE(nsFocusManager::GetFocusManager());
|
|
nsPIDOMWindowOuter* focused =
|
|
nsFocusManager::GetFocusManager()->GetFocusedWindow();
|
|
nsCOMPtr<Document> pointerLockedDoc =
|
|
do_QueryReferent(EventStateManager::sPointerLockedDoc);
|
|
if (pointerLockedDoc && !nsContentUtils::IsInPointerLockContext(focused)) {
|
|
Document::UnlockPointer();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
static PointerUnlocker* sActiveUnlocker;
|
|
};
|
|
|
|
PointerUnlocker* PointerUnlocker::sActiveUnlocker = nullptr;
|
|
|
|
void nsFocusManager::SetFocusedWindowInternal(nsPIDOMWindowOuter* aWindow) {
|
|
if (!PointerUnlocker::sActiveUnlocker &&
|
|
nsContentUtils::IsInPointerLockContext(mFocusedWindow) &&
|
|
!nsContentUtils::IsInPointerLockContext(aWindow)) {
|
|
nsCOMPtr<nsIRunnable> runnable = new PointerUnlocker();
|
|
NS_DispatchToCurrentThread(runnable);
|
|
}
|
|
|
|
// Update the last focus time on any affected documents
|
|
if (aWindow && aWindow != mFocusedWindow) {
|
|
const TimeStamp now(TimeStamp::Now());
|
|
for (Document* doc = aWindow->GetExtantDoc(); doc;
|
|
doc = doc->GetInProcessParentDocument()) {
|
|
doc->SetLastFocusTime(now);
|
|
}
|
|
}
|
|
|
|
mFocusedWindow = aWindow;
|
|
}
|
|
|
|
void nsFocusManager::MarkUncollectableForCCGeneration(uint32_t aGeneration) {
|
|
if (!sInstance) {
|
|
return;
|
|
}
|
|
|
|
if (sInstance->mActiveWindow) {
|
|
sInstance->mActiveWindow->MarkUncollectableForCCGeneration(aGeneration);
|
|
}
|
|
if (sInstance->mFocusedWindow) {
|
|
sInstance->mFocusedWindow->MarkUncollectableForCCGeneration(aGeneration);
|
|
}
|
|
if (sInstance->mWindowBeingLowered) {
|
|
sInstance->mWindowBeingLowered->MarkUncollectableForCCGeneration(
|
|
aGeneration);
|
|
}
|
|
if (sInstance->mFocusedElement) {
|
|
sInstance->mFocusedElement->OwnerDoc()->MarkUncollectableForCCGeneration(
|
|
aGeneration);
|
|
}
|
|
if (sInstance->mFirstBlurEvent) {
|
|
sInstance->mFirstBlurEvent->OwnerDoc()->MarkUncollectableForCCGeneration(
|
|
aGeneration);
|
|
}
|
|
if (sInstance->mFirstFocusEvent) {
|
|
sInstance->mFirstFocusEvent->OwnerDoc()->MarkUncollectableForCCGeneration(
|
|
aGeneration);
|
|
}
|
|
if (sInstance->mMouseButtonEventHandlingDocument) {
|
|
sInstance->mMouseButtonEventHandlingDocument
|
|
->MarkUncollectableForCCGeneration(aGeneration);
|
|
}
|
|
}
|
|
|
|
bool nsFocusManager::CanSkipFocus(nsIContent* aContent) {
|
|
if (!aContent || nsContentUtils::IsChromeDoc(aContent->OwnerDoc())) {
|
|
return false;
|
|
}
|
|
|
|
if (mFocusedElement == aContent) {
|
|
return true;
|
|
}
|
|
|
|
nsIDocShell* ds = aContent->OwnerDoc()->GetDocShell();
|
|
if (!ds) {
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> root;
|
|
ds->GetInProcessRootTreeItem(getter_AddRefs(root));
|
|
nsCOMPtr<nsPIDOMWindowOuter> newRootWindow =
|
|
root ? root->GetWindow() : nullptr;
|
|
if (mActiveWindow != newRootWindow) {
|
|
nsPIDOMWindowOuter* outerWindow = aContent->OwnerDoc()->GetWindow();
|
|
if (outerWindow && outerWindow->GetFocusedElement() == aContent) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
nsresult NS_NewFocusManager(nsIFocusManager** aResult) {
|
|
NS_IF_ADDREF(*aResult = nsFocusManager::GetFocusManager());
|
|
return NS_OK;
|
|
}
|