зеркало из https://github.com/mozilla/gecko-dev.git
3568 строки
113 KiB
C++
3568 строки
113 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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/* container for a document and its presentation */
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#include "gfxContext.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/RestyleManager.h"
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#include "mozilla/ServoStyleSet.h"
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#include "mozilla/StaticPrefs_print.h"
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#include "mozilla/Telemetry.h"
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#include "nsThreadUtils.h"
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#include "nscore.h"
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#include "nsCOMPtr.h"
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#include "nsCRT.h"
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#include "nsFrameSelection.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsIContent.h"
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#include "nsIDocumentViewer.h"
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#include "nsIDocumentViewerPrint.h"
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#include "nsIScreen.h"
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#include "mozilla/dom/AutoSuppressEventHandlingAndSuspend.h"
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#include "mozilla/dom/BrowsingContext.h"
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#include "mozilla/dom/BeforeUnloadEvent.h"
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#include "mozilla/dom/PopupBlocker.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/DocumentInlines.h"
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#include "mozilla/dom/DocGroup.h"
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#include "mozilla/widget/Screen.h"
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#include "nsPresContext.h"
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#include "nsIFrame.h"
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#include "nsIWritablePropertyBag2.h"
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#include "nsSubDocumentFrame.h"
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#include "nsGenericHTMLElement.h"
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#include "nsStubMutationObserver.h"
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#include "nsISelectionListener.h"
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#include "mozilla/dom/Selection.h"
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#include "nsContentUtils.h"
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#ifdef ACCESSIBILITY
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# include "mozilla/a11y/DocAccessible.h"
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#endif
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#include "mozilla/BasicEvents.h"
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#include "mozilla/Encoding.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/SpinEventLoopUntil.h"
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#include "mozilla/WeakPtr.h"
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#include "mozilla/StaticPrefs_dom.h"
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#include "mozilla/StaticPrefs_javascript.h"
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#include "mozilla/StaticPrefs_fission.h"
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#include "mozilla/StaticPrefs_print.h"
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#include "mozilla/StyleSheet.h"
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#include "mozilla/StyleSheetInlines.h"
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#include "mozilla/Try.h"
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#include "nsViewManager.h"
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#include "nsView.h"
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#include "nsPageSequenceFrame.h"
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#include "nsNetUtil.h"
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#include "nsIDocumentViewerEdit.h"
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#include "mozilla/css/Loader.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsDocShell.h"
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#include "nsIBaseWindow.h"
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#include "nsILayoutHistoryState.h"
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#include "nsCharsetSource.h"
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#include "mozilla/ReflowInput.h"
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#include "nsIImageLoadingContent.h"
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#include "nsCopySupport.h"
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#include "nsXULPopupManager.h"
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#include "nsIClipboardHelper.h"
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#include "nsPIDOMWindow.h"
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#include "nsGlobalWindowInner.h"
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#include "nsGlobalWindowOuter.h"
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#include "nsDOMNavigationTiming.h"
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#include "nsPIWindowRoot.h"
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#include "nsJSEnvironment.h"
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#include "nsFocusManager.h"
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#include "nsIScrollableFrame.h"
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#include "nsStyleSheetService.h"
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#include "nsILoadContext.h"
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#include "mozilla/ThrottledEventQueue.h"
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#include "nsIPromptCollection.h"
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#include "nsIPromptService.h"
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#include "imgIContainer.h" // image animation mode constants
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#include "nsIXULRuntime.h"
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#include "nsSandboxFlags.h"
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//--------------------------
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// Printing Include
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//---------------------------
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#ifdef NS_PRINTING
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# include "nsIWebBrowserPrint.h"
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# include "nsPrintJob.h"
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# include "nsDeviceContextSpecProxy.h"
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// Print Options
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# include "nsIPrintSettings.h"
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# include "nsIPrintSettingsService.h"
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# include "nsISimpleEnumerator.h"
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#endif // NS_PRINTING
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// focus
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#include "nsIDOMEventListener.h"
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#include "nsISelectionController.h"
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#include "mozilla/EventDispatcher.h"
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#include "nsISHEntry.h"
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#include "nsISHistory.h"
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#include "nsIWebNavigation.h"
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#include "mozilla/dom/XMLHttpRequestMainThread.h"
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// paint forcing
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#include <stdio.h>
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#include "mozilla/BasePrincipal.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/dom/ScriptLoader.h"
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#include "mozilla/dom/WindowGlobalChild.h"
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namespace mozilla {
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namespace dom {
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class PrintPreviewResultInfo;
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} // namespace dom
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} // namespace mozilla
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using namespace mozilla;
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using namespace mozilla::dom;
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using mozilla::layout::RemotePrintJobChild;
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using PrintPreviewResolver =
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std::function<void(const mozilla::dom::PrintPreviewResultInfo&)>;
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//-----------------------------------------------------
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// LOGGING
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#include "LayoutLogging.h"
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#include "mozilla/Logging.h"
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extern mozilla::LazyLogModule gPageCacheLog;
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#ifdef NS_PRINTING
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mozilla::LazyLogModule gPrintingLog("printing");
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# define PR_PL(_p1) MOZ_LOG(gPrintingLog, mozilla::LogLevel::Debug, _p1);
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#endif // NS_PRINTING
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#define PRT_YESNO(_p) ((_p) ? "YES" : "NO")
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//-----------------------------------------------------
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class nsDocumentViewer;
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// a small delegate class used to avoid circular references
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class nsDocViewerSelectionListener final : public nsISelectionListener {
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public:
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// nsISupports interface...
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NS_DECL_ISUPPORTS
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// nsISelectionListerner interface
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NS_DECL_NSISELECTIONLISTENER
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explicit nsDocViewerSelectionListener(nsDocumentViewer* aDocViewer)
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: mDocViewer(aDocViewer), mSelectionWasCollapsed(true) {}
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void Disconnect() { mDocViewer = nullptr; }
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protected:
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virtual ~nsDocViewerSelectionListener() = default;
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nsDocumentViewer* mDocViewer;
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bool mSelectionWasCollapsed;
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};
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/** editor Implementation of the FocusListener interface */
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class nsDocViewerFocusListener final : public nsIDOMEventListener {
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public:
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explicit nsDocViewerFocusListener(nsDocumentViewer* aDocViewer)
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: mDocViewer(aDocViewer) {}
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NS_DECL_ISUPPORTS
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NS_DECL_NSIDOMEVENTLISTENER
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void Disconnect() { mDocViewer = nullptr; }
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protected:
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virtual ~nsDocViewerFocusListener() = default;
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nsDocumentViewer* mDocViewer;
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};
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namespace viewer_detail {
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/**
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* Mutation observer for use until we hand ourselves over to our SHEntry.
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*/
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class BFCachePreventionObserver final : public nsStubMutationObserver {
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public:
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explicit BFCachePreventionObserver(Document* aDocument)
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: mDocument(aDocument) {}
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NS_DECL_ISUPPORTS
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NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
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// Stop observing the document.
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void Disconnect();
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private:
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~BFCachePreventionObserver() = default;
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// Helper for the work that needs to happen when mutations happen.
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void MutationHappened();
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Document* mDocument; // Weak; we get notified if it dies
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};
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NS_IMPL_ISUPPORTS(BFCachePreventionObserver, nsIMutationObserver)
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void BFCachePreventionObserver::CharacterDataChanged(
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nsIContent* aContent, const CharacterDataChangeInfo&) {
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if (aContent->IsInNativeAnonymousSubtree()) {
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return;
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}
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MutationHappened();
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}
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void BFCachePreventionObserver::AttributeChanged(Element* aElement,
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int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue) {
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if (aElement->IsInNativeAnonymousSubtree()) {
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return;
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}
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MutationHappened();
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}
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void BFCachePreventionObserver::ContentAppended(nsIContent* aFirstNewContent) {
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if (aFirstNewContent->IsInNativeAnonymousSubtree()) {
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return;
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}
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MutationHappened();
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}
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void BFCachePreventionObserver::ContentInserted(nsIContent* aChild) {
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if (aChild->IsInNativeAnonymousSubtree()) {
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return;
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}
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MutationHappened();
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}
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void BFCachePreventionObserver::ContentRemoved(nsIContent* aChild,
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nsIContent* aPreviousSibling) {
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if (aChild->IsInNativeAnonymousSubtree()) {
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return;
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}
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MutationHappened();
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}
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void BFCachePreventionObserver::NodeWillBeDestroyed(nsINode* aNode) {
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mDocument = nullptr;
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}
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void BFCachePreventionObserver::Disconnect() {
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if (mDocument) {
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mDocument->RemoveMutationObserver(this);
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// It will no longer tell us when it goes away, so make sure we're
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// not holding a dangling ref.
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mDocument = nullptr;
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}
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}
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void BFCachePreventionObserver::MutationHappened() {
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MOZ_ASSERT(
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mDocument,
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"How can we not have a document but be getting notified for mutations?");
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mDocument->DisallowBFCaching();
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Disconnect();
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}
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} // namespace viewer_detail
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using viewer_detail::BFCachePreventionObserver;
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//-------------------------------------------------------------
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class nsDocumentViewer final : public nsIDocumentViewer,
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public nsIDocumentViewerEdit,
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public nsIDocumentViewerPrint
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#ifdef NS_PRINTING
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,
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public nsIWebBrowserPrint
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#endif
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{
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friend class nsDocViewerSelectionListener;
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friend class nsPagePrintTimer;
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friend class nsPrintJob;
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public:
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nsDocumentViewer();
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// nsISupports interface...
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NS_DECL_ISUPPORTS
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// nsIDocumentViewer interface...
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NS_DECL_NSIDOCUMENTVIEWER
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// nsIDocumentViewerEdit
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NS_DECL_NSIDOCUMENTVIEWEREDIT
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#ifdef NS_PRINTING
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// nsIWebBrowserPrint
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NS_DECL_NSIWEBBROWSERPRINT
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#endif
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// nsIDocumentViewerPrint Printing Methods
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NS_DECL_NSIDOCUMENTVIEWERPRINT
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protected:
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virtual ~nsDocumentViewer();
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private:
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/**
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* Creates a view manager, root view, and widget for the root view, setting
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* mViewManager and mWindow.
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* @param aSize the initial size in appunits
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* @param aContainerView the container view to hook our root view up
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* to as a child, or null if this will be the root view manager
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*/
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nsresult MakeWindow(const nsSize& aSize, nsView* aContainerView);
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/**
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* Create our device context
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*/
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nsresult CreateDeviceContext(nsView* aContainerView);
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/**
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* If aDoCreation is true, this creates the device context, creates a
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* prescontext if necessary, and calls MakeWindow.
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*
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* If aForceSetNewDocument is false, then SetNewDocument won't be
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* called if the window's current document is already mDocument.
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*/
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nsresult InitInternal(nsIWidget* aParentWidget, nsISupports* aState,
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mozilla::dom::WindowGlobalChild* aActor,
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const nsIntRect& aBounds, bool aDoCreation,
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bool aNeedMakeCX = true,
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bool aForceSetNewDocument = true);
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/**
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* @param aDoInitialReflow set to true if you want to kick off the initial
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* reflow
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*/
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MOZ_CAN_RUN_SCRIPT_BOUNDARY
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nsresult InitPresentationStuff(bool aDoInitialReflow);
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already_AddRefed<nsINode> GetPopupNode();
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already_AddRefed<nsINode> GetPopupLinkNode();
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already_AddRefed<nsIImageLoadingContent> GetPopupImageNode();
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void PrepareToStartLoad(void);
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nsresult SyncParentSubDocMap();
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void RemoveFocusListener();
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void ReinitializeFocusListener();
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mozilla::dom::Selection* GetDocumentSelection();
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void DestroyPresShell();
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void DestroyPresContext();
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void InvalidatePotentialSubDocDisplayItem();
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// Whether we should attach to the top level widget. This is true if we
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// are sharing/recycling a single base widget and not creating multiple
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// child widgets.
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bool ShouldAttachToTopLevel();
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std::tuple<const nsIFrame*, int32_t> GetCurrentSheetFrameAndNumber() const;
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protected:
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// Returns the current viewmanager. Might be null.
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nsViewManager* GetViewManager();
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void DetachFromTopLevelWidget();
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// IMPORTANT: The ownership implicit in the following member
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// variables has been explicitly checked and set using nsCOMPtr
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// for owning pointers and raw COM interface pointers for weak
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// (ie, non owning) references. If you add any members to this
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// class, please make the ownership explicit (pinkerton, scc).
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WeakPtr<nsDocShell> mContainer; // it owns me!
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RefPtr<nsDeviceContext> mDeviceContext; // We create and own this baby
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// the following six items are explicitly in this order
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// so they will be destroyed in the reverse order (pinkerton, scc)
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nsCOMPtr<Document> mDocument;
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nsCOMPtr<nsIWidget> mWindow; // may be null
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RefPtr<nsViewManager> mViewManager;
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RefPtr<nsPresContext> mPresContext;
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RefPtr<PresShell> mPresShell;
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RefPtr<nsDocViewerSelectionListener> mSelectionListener;
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RefPtr<nsDocViewerFocusListener> mFocusListener;
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nsCOMPtr<nsIDocumentViewer> mPreviousViewer;
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nsCOMPtr<nsISHEntry> mSHEntry;
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// Observer that will prevent bfcaching if it gets notified. This
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// is non-null precisely when mSHEntry is non-null.
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RefPtr<BFCachePreventionObserver> mBFCachePreventionObserver;
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nsIWidget* mParentWidget; // purposely won't be ref counted. May be null
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bool mAttachedToParent; // view is attached to the parent widget
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nsIntRect mBounds;
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int16_t mNumURLStarts;
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int16_t mDestroyBlockedCount;
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unsigned mStopped : 1;
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unsigned mLoaded : 1;
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unsigned mDeferredWindowClose : 1;
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// document management data
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// these items are specific to markup documents (html and xml)
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// may consider splitting these out into a subclass
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unsigned mIsSticky : 1;
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unsigned mInPermitUnload : 1;
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unsigned mInPermitUnloadPrompt : 1;
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#ifdef NS_PRINTING
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unsigned mClosingWhilePrinting : 1;
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# if NS_PRINT_PREVIEW
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RefPtr<nsPrintJob> mPrintJob;
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# endif // NS_PRINT_PREVIEW
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#endif // NS_PRINTING
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/* character set member data */
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int32_t mReloadEncodingSource;
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const Encoding* mReloadEncoding;
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bool mIsPageMode;
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bool mInitializedForPrintPreview;
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bool mHidden;
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};
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class nsDocumentShownDispatcher : public Runnable {
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public:
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explicit nsDocumentShownDispatcher(nsCOMPtr<Document> aDocument)
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: Runnable("nsDocumentShownDispatcher"), mDocument(aDocument) {}
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NS_IMETHOD Run() override;
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private:
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nsCOMPtr<Document> mDocument;
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};
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//------------------------------------------------------------------
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// nsDocumentViewer
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//------------------------------------------------------------------
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//------------------------------------------------------------------
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already_AddRefed<nsIDocumentViewer> NS_NewDocumentViewer() {
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RefPtr<nsDocumentViewer> viewer = new nsDocumentViewer();
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return viewer.forget();
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}
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void nsDocumentViewer::PrepareToStartLoad() {
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MOZ_DIAGNOSTIC_ASSERT(!GetIsPrintPreview(),
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"Print preview tab should never navigate");
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mStopped = false;
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mLoaded = false;
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mAttachedToParent = false;
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mDeferredWindowClose = false;
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#ifdef NS_PRINTING
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mClosingWhilePrinting = false;
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// Make sure we have destroyed it and cleared the data member
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if (mPrintJob) {
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mPrintJob->Destroy();
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mPrintJob = nullptr;
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}
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#endif // NS_PRINTING
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}
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nsDocumentViewer::nsDocumentViewer()
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: mParentWidget(nullptr),
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mAttachedToParent(false),
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mNumURLStarts(0),
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mDestroyBlockedCount(0),
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mStopped(false),
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mLoaded(false),
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mDeferredWindowClose(false),
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mIsSticky(true),
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mInPermitUnload(false),
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mInPermitUnloadPrompt(false),
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#ifdef NS_PRINTING
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mClosingWhilePrinting(false),
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#endif // NS_PRINTING
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mReloadEncodingSource(kCharsetUninitialized),
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mReloadEncoding(nullptr),
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mIsPageMode(false),
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mInitializedForPrintPreview(false),
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mHidden(false) {
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PrepareToStartLoad();
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}
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NS_IMPL_ADDREF(nsDocumentViewer)
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NS_IMPL_RELEASE(nsDocumentViewer)
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NS_INTERFACE_MAP_BEGIN(nsDocumentViewer)
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NS_INTERFACE_MAP_ENTRY(nsIDocumentViewer)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDocumentViewerEdit)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDocumentViewerPrint)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocumentViewer)
|
|
#ifdef NS_PRINTING
|
|
NS_INTERFACE_MAP_ENTRY(nsIWebBrowserPrint)
|
|
#endif
|
|
NS_INTERFACE_MAP_END
|
|
|
|
nsDocumentViewer::~nsDocumentViewer() {
|
|
if (mDocument) {
|
|
Close(nullptr);
|
|
mDocument->Destroy();
|
|
}
|
|
|
|
#ifdef NS_PRINTING
|
|
if (mPrintJob) {
|
|
mPrintJob->Destroy();
|
|
mPrintJob = nullptr;
|
|
}
|
|
#endif
|
|
|
|
MOZ_RELEASE_ASSERT(mDestroyBlockedCount == 0);
|
|
NS_ASSERTION(!mPresShell && !mPresContext,
|
|
"User did not call nsIDocumentViewer::Destroy");
|
|
if (mPresShell || mPresContext) {
|
|
// Make sure we don't hand out a reference to the content viewer to
|
|
// the SHEntry!
|
|
mSHEntry = nullptr;
|
|
|
|
Destroy();
|
|
}
|
|
|
|
if (mSelectionListener) {
|
|
mSelectionListener->Disconnect();
|
|
}
|
|
|
|
RemoveFocusListener();
|
|
|
|
// XXX(?) Revoke pending invalidate events
|
|
}
|
|
|
|
/*
|
|
* This method is called by the Document Loader once a document has
|
|
* been created for a particular data stream... The content viewer
|
|
* must cache this document for later use when Init(...) is called.
|
|
*
|
|
* This method is also called when an out of band document.write() happens.
|
|
* In that case, the document passed in is the same as the previous document.
|
|
*/
|
|
/* virtual */
|
|
void nsDocumentViewer::LoadStart(Document* aDocument) {
|
|
MOZ_ASSERT(aDocument);
|
|
|
|
if (!mDocument) {
|
|
mDocument = aDocument;
|
|
}
|
|
}
|
|
|
|
void nsDocumentViewer::RemoveFocusListener() {
|
|
if (RefPtr<nsDocViewerFocusListener> oldListener =
|
|
std::move(mFocusListener)) {
|
|
oldListener->Disconnect();
|
|
if (mDocument) {
|
|
mDocument->RemoveEventListener(u"focus"_ns, oldListener, false);
|
|
mDocument->RemoveEventListener(u"blur"_ns, oldListener, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDocumentViewer::ReinitializeFocusListener() {
|
|
RemoveFocusListener();
|
|
mFocusListener = new nsDocViewerFocusListener(this);
|
|
if (mDocument) {
|
|
mDocument->AddEventListener(u"focus"_ns, mFocusListener, false, false);
|
|
mDocument->AddEventListener(u"blur"_ns, mFocusListener, false, false);
|
|
}
|
|
}
|
|
|
|
nsresult nsDocumentViewer::SyncParentSubDocMap() {
|
|
nsCOMPtr<nsIDocShell> docShell(mContainer);
|
|
if (!docShell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> pwin(docShell->GetWindow());
|
|
if (!mDocument || !pwin) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<Element> element = pwin->GetFrameElementInternal();
|
|
if (!element) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> parent;
|
|
docShell->GetInProcessParent(getter_AddRefs(parent));
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> parent_win =
|
|
parent ? parent->GetWindow() : nullptr;
|
|
if (!parent_win) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<Document> parent_doc = parent_win->GetDoc();
|
|
if (!parent_doc) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mDocument && parent_doc->GetSubDocumentFor(element) != mDocument &&
|
|
parent_doc->EventHandlingSuppressed()) {
|
|
mDocument->SuppressEventHandling(parent_doc->EventHandlingSuppressed());
|
|
}
|
|
return parent_doc->SetSubDocumentFor(element, mDocument);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::SetContainer(nsIDocShell* aContainer) {
|
|
mContainer = static_cast<nsDocShell*>(aContainer);
|
|
|
|
// We're loading a new document into the window where this document
|
|
// viewer lives, sync the parent document's frame element -> sub
|
|
// document map
|
|
|
|
return SyncParentSubDocMap();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetContainer(nsIDocShell** aResult) {
|
|
NS_ENSURE_ARG_POINTER(aResult);
|
|
|
|
nsCOMPtr<nsIDocShell> container(mContainer);
|
|
container.swap(*aResult);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Init(nsIWidget* aParentWidget, const nsIntRect& aBounds,
|
|
WindowGlobalChild* aActor) {
|
|
return InitInternal(aParentWidget, nullptr, aActor, aBounds, true);
|
|
}
|
|
|
|
nsresult nsDocumentViewer::InitPresentationStuff(bool aDoInitialReflow) {
|
|
// We assert this because initializing the pres shell could otherwise cause
|
|
// re-entrancy into nsDocumentViewer methods, which might cause a different
|
|
// pres shell to be created. Callers of InitPresentationStuff should ensure
|
|
// the call is appropriately bounded by an nsAutoScriptBlocker to decide
|
|
// when it is safe for these re-entrant calls to be made.
|
|
MOZ_ASSERT(!nsContentUtils::IsSafeToRunScript(),
|
|
"InitPresentationStuff must only be called when scripts are "
|
|
"blocked");
|
|
|
|
#ifdef NS_PRINTING
|
|
// When getting printed, either for print or print preview, the print job
|
|
// takes care of setting up the presentation of the document.
|
|
if (mPrintJob) {
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
NS_ASSERTION(!mPresShell, "Someone should have destroyed the presshell!");
|
|
|
|
// Now make the shell for the document
|
|
nsCOMPtr<Document> doc = mDocument;
|
|
RefPtr<nsPresContext> presContext = mPresContext;
|
|
RefPtr<nsViewManager> viewManager = mViewManager;
|
|
mPresShell = doc->CreatePresShell(presContext, viewManager);
|
|
if (!mPresShell) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (aDoInitialReflow) {
|
|
// Since Initialize() will create frames for *all* items
|
|
// that are currently in the document tree, we need to flush
|
|
// any pending notifications to prevent the content sink from
|
|
// duplicating layout frames for content it has added to the tree
|
|
// but hasn't notified the document about. (Bug 154018)
|
|
//
|
|
// Note that we are flushing before we add mPresShell as an observer
|
|
// to avoid bogus notifications.
|
|
mDocument->FlushPendingNotifications(FlushType::ContentAndNotify);
|
|
}
|
|
|
|
mPresShell->BeginObservingDocument();
|
|
|
|
// Initialize our view manager
|
|
|
|
{
|
|
int32_t p2a = mPresContext->AppUnitsPerDevPixel();
|
|
MOZ_ASSERT(
|
|
p2a ==
|
|
mPresContext->DeviceContext()->AppUnitsPerDevPixelAtUnitFullZoom());
|
|
|
|
nscoord width = p2a * mBounds.width;
|
|
nscoord height = p2a * mBounds.height;
|
|
|
|
mViewManager->SetWindowDimensions(width, height);
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, width, height));
|
|
// We rely on the default zoom not being initialized until here.
|
|
mPresContext->RecomputeBrowsingContextDependentData();
|
|
}
|
|
|
|
if (mWindow && mDocument->IsTopLevelContentDocument()) {
|
|
// Set initial safe area insets
|
|
ScreenIntMargin windowSafeAreaInsets;
|
|
LayoutDeviceIntRect windowRect = mWindow->GetScreenBounds();
|
|
nsCOMPtr<nsIScreen> screen = mWindow->GetWidgetScreen();
|
|
if (screen) {
|
|
windowSafeAreaInsets = nsContentUtils::GetWindowSafeAreaInsets(
|
|
screen, mWindow->GetSafeAreaInsets(), windowRect);
|
|
}
|
|
|
|
mPresContext->SetSafeAreaInsets(windowSafeAreaInsets);
|
|
}
|
|
|
|
if (aDoInitialReflow) {
|
|
RefPtr<PresShell> presShell = mPresShell;
|
|
// Initial reflow
|
|
presShell->Initialize();
|
|
}
|
|
|
|
// now register ourselves as a selection listener, so that we get
|
|
// called when the selection changes in the window
|
|
if (!mSelectionListener) {
|
|
mSelectionListener = new nsDocViewerSelectionListener(this);
|
|
}
|
|
|
|
RefPtr<mozilla::dom::Selection> selection = GetDocumentSelection();
|
|
if (!selection) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
selection->AddSelectionListener(mSelectionListener);
|
|
|
|
ReinitializeFocusListener();
|
|
|
|
if (aDoInitialReflow && mDocument) {
|
|
nsCOMPtr<Document> document = mDocument;
|
|
document->ScrollToRef();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsPresContext* CreatePresContext(Document* aDocument,
|
|
nsPresContext::nsPresContextType aType,
|
|
nsView* aContainerView) {
|
|
if (aContainerView) {
|
|
return new nsPresContext(aDocument, aType);
|
|
}
|
|
return new nsRootPresContext(aDocument, aType);
|
|
}
|
|
|
|
//-----------------------------------------------
|
|
// This method can be used to initial the "presentation"
|
|
// The aDoCreation indicates whether it should create
|
|
// all the new objects or just initialize the existing ones
|
|
nsresult nsDocumentViewer::InitInternal(
|
|
nsIWidget* aParentWidget, nsISupports* aState, WindowGlobalChild* aActor,
|
|
const nsIntRect& aBounds, bool aDoCreation, bool aNeedMakeCX /*= true*/,
|
|
bool aForceSetNewDocument /* = true*/) {
|
|
// We don't want any scripts to run here. That can cause flushing,
|
|
// which can cause reentry into initialization of this document viewer,
|
|
// which would be disastrous.
|
|
nsAutoScriptBlocker blockScripts;
|
|
|
|
mParentWidget = aParentWidget; // not ref counted
|
|
mBounds = aBounds;
|
|
|
|
nsresult rv = NS_OK;
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_NULL_POINTER);
|
|
|
|
nsView* containerView = FindContainerView();
|
|
|
|
bool makeCX = false;
|
|
if (aDoCreation) {
|
|
nsresult rv = CreateDeviceContext(containerView);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// XXXbz this is a nasty hack to do with the fact that we create
|
|
// presentations both in Init() and in Show()... Ideally we would only do
|
|
// it in one place (Show()) and require that callers call init(), open(),
|
|
// show() in that order or something.
|
|
if (!mPresContext &&
|
|
(aParentWidget || containerView || mDocument->IsBeingUsedAsImage() ||
|
|
(mDocument->GetDisplayDocument() &&
|
|
mDocument->GetDisplayDocument()->GetPresShell()))) {
|
|
// Create presentation context
|
|
if (mIsPageMode) {
|
|
// Presentation context already created in SetPageModeForTesting which
|
|
// is calling this method
|
|
} else {
|
|
mPresContext = CreatePresContext(
|
|
mDocument, nsPresContext::eContext_Galley, containerView);
|
|
}
|
|
NS_ENSURE_TRUE(mPresContext, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
nsresult rv = mPresContext->Init(mDeviceContext);
|
|
if (NS_FAILED(rv)) {
|
|
mPresContext = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
#if defined(NS_PRINTING) && defined(NS_PRINT_PREVIEW)
|
|
makeCX = !GetIsPrintPreview() &&
|
|
aNeedMakeCX; // needs to be true except when we are already in
|
|
// PP or we are enabling/disabling paginated mode.
|
|
#else
|
|
makeCX = true;
|
|
#endif
|
|
}
|
|
|
|
if (mPresContext) {
|
|
// Create the ViewManager and Root View...
|
|
|
|
// We must do this before we tell the script global object about
|
|
// this new document since doing that will cause us to re-enter
|
|
// into nsSubDocumentFrame code through reflows caused by
|
|
// FlushPendingNotifications() calls down the road...
|
|
|
|
rv = MakeWindow(nsSize(mPresContext->DevPixelsToAppUnits(aBounds.width),
|
|
mPresContext->DevPixelsToAppUnits(aBounds.height)),
|
|
containerView);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
Hide();
|
|
|
|
#ifdef NS_PRINT_PREVIEW
|
|
if (mIsPageMode) {
|
|
// I'm leaving this in a broken state for the moment; we should
|
|
// be measuring/scaling with the print device context, not the
|
|
// screen device context, but this is good enough to allow
|
|
// printing reftests to work.
|
|
double pageWidth = 0, pageHeight = 0;
|
|
mPresContext->GetPrintSettings()->GetEffectivePageSize(&pageWidth,
|
|
&pageHeight);
|
|
mPresContext->SetPageSize(
|
|
nsSize(mPresContext->CSSTwipsToAppUnits(NSToIntFloor(pageWidth)),
|
|
mPresContext->CSSTwipsToAppUnits(NSToIntFloor(pageHeight))));
|
|
mPresContext->SetIsRootPaginatedDocument(true);
|
|
mPresContext->SetPageScale(1.0f);
|
|
}
|
|
#endif
|
|
} else {
|
|
// Avoid leaking the old viewer.
|
|
if (mPreviousViewer) {
|
|
mPreviousViewer->Destroy();
|
|
mPreviousViewer = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIInterfaceRequestor> requestor(mContainer);
|
|
if (requestor) {
|
|
// Set script-context-owner in the document
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = do_GetInterface(requestor);
|
|
|
|
if (window) {
|
|
nsCOMPtr<Document> curDoc = window->GetExtantDoc();
|
|
if (aForceSetNewDocument || curDoc != mDocument) {
|
|
rv = window->SetNewDocument(mDocument, aState, false, aActor);
|
|
if (NS_FAILED(rv)) {
|
|
Destroy();
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aDoCreation && mPresContext) {
|
|
// The ViewManager and Root View was created above (in
|
|
// MakeWindow())...
|
|
|
|
rv = InitPresentationStuff(!makeCX);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void nsDocumentViewer::SetNavigationTiming(nsDOMNavigationTiming* timing) {
|
|
NS_ASSERTION(mDocument, "Must have a document to set navigation timing.");
|
|
if (mDocument) {
|
|
mDocument->SetNavigationTiming(timing);
|
|
}
|
|
}
|
|
|
|
//
|
|
// LoadComplete(aStatus)
|
|
//
|
|
// aStatus - The status returned from loading the document.
|
|
//
|
|
// This method is called by the container when the document has been
|
|
// completely loaded.
|
|
//
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::LoadComplete(nsresult aStatus) {
|
|
/* We need to protect ourself against auto-destruction in case the
|
|
window is closed while processing the OnLoad event. See bug
|
|
http://bugzilla.mozilla.org/show_bug.cgi?id=78445 for more
|
|
explanation.
|
|
*/
|
|
RefPtr<nsDocumentViewer> kungFuDeathGrip(this);
|
|
|
|
// Flush out layout so it's up-to-date by the time onload is called.
|
|
// Note that this could destroy the window, so do this before
|
|
// checking for our mDocument and its window.
|
|
if (mPresShell && !mStopped) {
|
|
// Hold strong ref because this could conceivably run script
|
|
RefPtr<PresShell> presShell = mPresShell;
|
|
presShell->FlushPendingNotifications(FlushType::Layout);
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE);
|
|
|
|
// First, get the window from the document...
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = mDocument->GetWindow();
|
|
|
|
mLoaded = true;
|
|
|
|
// Now, fire either an OnLoad or OnError event to the document...
|
|
bool restoring = false;
|
|
// XXXbz imagelib kills off the document load for a full-page image with
|
|
// NS_ERROR_PARSED_DATA_CACHED if it's in the cache. So we want to treat
|
|
// that one as a success code; otherwise whether we fire onload for the image
|
|
// will depend on whether it's cached!
|
|
if (window &&
|
|
(NS_SUCCEEDED(aStatus) || aStatus == NS_ERROR_PARSED_DATA_CACHED)) {
|
|
// If this code changes, the code in nsDocLoader::DocLoaderIsEmpty
|
|
// that fires load events for document.open() cases might need to
|
|
// be updated too.
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
WidgetEvent event(true, eLoad);
|
|
event.mFlags.mBubbles = false;
|
|
event.mFlags.mCancelable = false;
|
|
// XXX Dispatching to |window|, but using |document| as the target.
|
|
event.mTarget = mDocument;
|
|
|
|
// If the document presentation is being restored, we don't want to fire
|
|
// onload to the document content since that would likely confuse scripts
|
|
// on the page.
|
|
|
|
RefPtr<nsDocShell> docShell = nsDocShell::Cast(window->GetDocShell());
|
|
NS_ENSURE_TRUE(docShell, NS_ERROR_UNEXPECTED);
|
|
|
|
// Unfortunately, docShell->GetRestoringDocument() might no longer be set
|
|
// correctly. In particular, it can be false by now if someone took it upon
|
|
// themselves to block onload from inside restoration and unblock it later.
|
|
// But we can detect the restoring case very simply: by whether our
|
|
// document's readyState is COMPLETE.
|
|
restoring =
|
|
(mDocument->GetReadyStateEnum() == Document::READYSTATE_COMPLETE);
|
|
if (!restoring) {
|
|
NS_ASSERTION(
|
|
mDocument->GetReadyStateEnum() == Document::READYSTATE_INTERACTIVE ||
|
|
// test_stricttransportsecurity.html has old-style
|
|
// docshell-generated about:blank docs reach this code!
|
|
(mDocument->GetReadyStateEnum() ==
|
|
Document::READYSTATE_UNINITIALIZED &&
|
|
NS_IsAboutBlank(mDocument->GetDocumentURI())),
|
|
"Bad readystate");
|
|
#ifdef DEBUG
|
|
bool docShellThinksWeAreRestoring;
|
|
docShell->GetRestoringDocument(&docShellThinksWeAreRestoring);
|
|
MOZ_ASSERT(!docShellThinksWeAreRestoring,
|
|
"How can docshell think we are restoring if we don't have a "
|
|
"READYSTATE_COMPLETE document?");
|
|
#endif // DEBUG
|
|
nsCOMPtr<Document> d = mDocument;
|
|
mDocument->SetReadyStateInternal(Document::READYSTATE_COMPLETE);
|
|
|
|
RefPtr<nsDOMNavigationTiming> timing(d->GetNavigationTiming());
|
|
if (timing) {
|
|
timing->NotifyLoadEventStart();
|
|
}
|
|
|
|
// Dispatch observer notification to notify observers document load is
|
|
// complete.
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
nsIPrincipal* principal = d->NodePrincipal();
|
|
os->NotifyObservers(ToSupports(d),
|
|
principal->IsSystemPrincipal()
|
|
? "chrome-document-loaded"
|
|
: "content-document-loaded",
|
|
nullptr);
|
|
}
|
|
|
|
nsPIDOMWindowInner* innerWindow = window->GetCurrentInnerWindow();
|
|
RefPtr<DocGroup> docGroup = d->GetDocGroup();
|
|
// It is possible that the parent document's load event fires earlier than
|
|
// childs' load event, and in this case we need to fire some artificial
|
|
// load events to make the parent thinks the load events for child has
|
|
// been done
|
|
if (innerWindow && DocGroup::TryToLoadIframesInBackground()) {
|
|
nsTArray<nsCOMPtr<nsIDocShell>> docShells;
|
|
nsCOMPtr<nsIDocShell> container(mContainer);
|
|
if (container) {
|
|
int32_t count;
|
|
container->GetInProcessChildCount(&count);
|
|
// We first find all background loading iframes that need to
|
|
// fire artificial load events, and instead of firing them as
|
|
// soon as we find them, we store them in an array, to prevent
|
|
// us from skipping some events.
|
|
for (int32_t i = 0; i < count; ++i) {
|
|
nsCOMPtr<nsIDocShellTreeItem> child;
|
|
container->GetInProcessChildAt(i, getter_AddRefs(child));
|
|
nsCOMPtr<nsIDocShell> childIDocShell = do_QueryInterface(child);
|
|
RefPtr<nsDocShell> docShell = nsDocShell::Cast(childIDocShell);
|
|
if (docShell && docShell->TreatAsBackgroundLoad() &&
|
|
docShell->GetDocument()->GetReadyStateEnum() <
|
|
Document::READYSTATE_COMPLETE) {
|
|
docShells.AppendElement(childIDocShell);
|
|
}
|
|
}
|
|
|
|
// Re-iterate the stored docShells to fire artificial load events
|
|
for (size_t i = 0; i < docShells.Length(); ++i) {
|
|
RefPtr<nsDocShell> docShell = nsDocShell::Cast(docShells[i]);
|
|
if (docShell && docShell->TreatAsBackgroundLoad() &&
|
|
docShell->GetDocument()->GetReadyStateEnum() <
|
|
Document::READYSTATE_COMPLETE) {
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
WidgetEvent event(true, eLoad);
|
|
event.mFlags.mBubbles = false;
|
|
event.mFlags.mCancelable = false;
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> win = docShell->GetWindow();
|
|
nsCOMPtr<Element> element = win->GetFrameElementInternal();
|
|
|
|
docShell->SetFakeOnLoadDispatched();
|
|
EventDispatcher::Dispatch(element, nullptr, &event, nullptr,
|
|
&status);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
d->SetLoadEventFiring(true);
|
|
RefPtr<nsPresContext> presContext = mPresContext;
|
|
// MOZ_KnownLive due to bug 1506441
|
|
EventDispatcher::Dispatch(
|
|
MOZ_KnownLive(nsGlobalWindowOuter::Cast(window)), presContext, &event,
|
|
nullptr, &status);
|
|
d->SetLoadEventFiring(false);
|
|
|
|
if (docGroup && docShell->TreatAsBackgroundLoad()) {
|
|
docGroup->TryFlushIframePostMessages(docShell->GetOuterWindowID());
|
|
}
|
|
|
|
if (timing) {
|
|
timing->NotifyLoadEventEnd();
|
|
}
|
|
|
|
if (innerWindow) {
|
|
innerWindow->QueuePerformanceNavigationTiming();
|
|
}
|
|
}
|
|
} else {
|
|
// XXX: Should fire error event to the document...
|
|
|
|
// If our load was explicitly aborted, then we want to set our
|
|
// readyState to COMPLETE, and fire a readystatechange event.
|
|
if (aStatus == NS_BINDING_ABORTED && mDocument) {
|
|
mDocument->NotifyAbortedLoad();
|
|
}
|
|
}
|
|
|
|
// Notify the document that it has been shown (regardless of whether
|
|
// it was just loaded). Note: mDocument may be null now if the above
|
|
// firing of onload caused the document to unload. Or, mDocument may not be
|
|
// the "current active" document, if the above firing of onload caused our
|
|
// docshell to navigate away. NOTE: In this latter scenario, it's likely that
|
|
// we fired pagehide (when navigating away) without ever having fired
|
|
// pageshow, and that's pretty broken... Fortunately, this should be rare.
|
|
// (It requires us to spin the event loop in onload handler, e.g. via sync
|
|
// XHR, in order for the navigation-away to happen before onload completes.)
|
|
// We skip firing pageshow if we're currently handling unload, or if loading
|
|
// was explicitly aborted.
|
|
if (mDocument && mDocument->IsCurrentActiveDocument() &&
|
|
aStatus != NS_BINDING_ABORTED) {
|
|
// Re-get window, since it might have changed during above firing of onload
|
|
window = mDocument->GetWindow();
|
|
if (window) {
|
|
nsIDocShell* docShell = window->GetDocShell();
|
|
bool isInUnload;
|
|
if (docShell && NS_SUCCEEDED(docShell->GetIsInUnload(&isInUnload)) &&
|
|
!isInUnload) {
|
|
mDocument->OnPageShow(restoring, nullptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mStopped) {
|
|
if (mDocument) {
|
|
nsCOMPtr<Document> document = mDocument;
|
|
document->ScrollToRef();
|
|
}
|
|
|
|
// Now that the document has loaded, we can tell the presshell
|
|
// to unsuppress painting.
|
|
if (mPresShell) {
|
|
RefPtr<PresShell> presShell = mPresShell;
|
|
presShell->UnsuppressPainting();
|
|
// mPresShell could have been removed now, see bug 378682/421432
|
|
if (mPresShell) {
|
|
mPresShell->LoadComplete();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mDocument && !restoring) {
|
|
mDocument->LoadEventFired();
|
|
}
|
|
|
|
// It's probably a good idea to GC soon since we have finished loading.
|
|
nsJSContext::PokeGC(
|
|
JS::GCReason::LOAD_END,
|
|
mDocument ? mDocument->GetWrapperPreserveColor() : nullptr);
|
|
|
|
#ifdef NS_PRINTING
|
|
// Check to see if someone tried to print during the load
|
|
if (window) {
|
|
auto* outerWin = nsGlobalWindowOuter::Cast(window);
|
|
outerWin->StopDelayingPrintingUntilAfterLoad();
|
|
if (outerWin->DelayedPrintUntilAfterLoad()) {
|
|
// We call into the inner because it ensures there's an active document
|
|
// and such, and it also waits until the whole thing completes, which is
|
|
// nice because it allows us to close if needed right here.
|
|
if (RefPtr inner =
|
|
nsGlobalWindowInner::Cast(window->GetCurrentInnerWindow())) {
|
|
inner->Print(IgnoreErrors());
|
|
}
|
|
if (outerWin->DelayedCloseForPrinting()) {
|
|
outerWin->Close();
|
|
}
|
|
} else {
|
|
MOZ_ASSERT(!outerWin->DelayedCloseForPrinting());
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return rv;
|
|
}
|
|
|
|
bool nsDocumentViewer::GetLoadCompleted() { return mLoaded; }
|
|
|
|
bool nsDocumentViewer::GetIsStopped() { return mStopped; }
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::PermitUnload(PermitUnloadAction aAction,
|
|
bool* aPermitUnload) {
|
|
// We're going to be running JS and nested event loops, which could cause our
|
|
// DocShell to be destroyed. Make sure we stay alive until the end of the
|
|
// function.
|
|
RefPtr<nsDocumentViewer> kungFuDeathGrip(this);
|
|
|
|
if (StaticPrefs::dom_disable_beforeunload()) {
|
|
aAction = eDontPromptAndUnload;
|
|
}
|
|
|
|
*aPermitUnload = true;
|
|
|
|
RefPtr<BrowsingContext> bc = mContainer->GetBrowsingContext();
|
|
if (!bc) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Per spec, we need to increase the ignore-opens-during-unload counter while
|
|
// dispatching the "beforeunload" event on both the document we're currently
|
|
// dispatching the event to and the document that we explicitly asked to
|
|
// unload.
|
|
IgnoreOpensDuringUnload ignoreOpens(mDocument);
|
|
|
|
bool foundBlocker = false;
|
|
bool foundOOPListener = false;
|
|
bc->PreOrderWalk([&](BrowsingContext* aBC) {
|
|
if (!aBC->IsInProcess()) {
|
|
WindowContext* wc = aBC->GetCurrentWindowContext();
|
|
if (wc && wc->HasBeforeUnload()) {
|
|
foundOOPListener = true;
|
|
}
|
|
} else if (aBC->GetDocShell()) {
|
|
nsCOMPtr<nsIDocumentViewer> viewer(aBC->GetDocShell()->GetDocViewer());
|
|
if (viewer && viewer->DispatchBeforeUnload() == eRequestBlockNavigation) {
|
|
foundBlocker = true;
|
|
}
|
|
}
|
|
});
|
|
|
|
if (!foundOOPListener) {
|
|
if (!foundBlocker) {
|
|
return NS_OK;
|
|
}
|
|
if (aAction != ePrompt) {
|
|
*aPermitUnload = aAction == eDontPromptAndUnload;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// NB: we nullcheck mDocument because it might now be dead as a result of
|
|
// the event being dispatched.
|
|
RefPtr<WindowGlobalChild> wgc(mDocument ? mDocument->GetWindowGlobalChild()
|
|
: nullptr);
|
|
if (!wgc) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsAutoSyncOperation sync(mDocument, SyncOperationBehavior::eSuspendInput);
|
|
AutoSuppressEventHandlingAndSuspend seh(bc->Group());
|
|
|
|
mInPermitUnloadPrompt = true;
|
|
|
|
bool done = false;
|
|
wgc->SendCheckPermitUnload(
|
|
foundBlocker, aAction,
|
|
[&](bool aPermit) {
|
|
done = true;
|
|
*aPermitUnload = aPermit;
|
|
},
|
|
[&](auto) {
|
|
// If the prompt aborted, we tell our consumer that it is not allowed
|
|
// to unload the page. One reason that prompts abort is that the user
|
|
// performed some action that caused the page to unload while our prompt
|
|
// was active. In those cases we don't want our consumer to also unload
|
|
// the page.
|
|
//
|
|
// XXX: Are there other cases where prompts can abort? Is it ok to
|
|
// prevent unloading the page in those cases?
|
|
done = true;
|
|
*aPermitUnload = false;
|
|
});
|
|
|
|
SpinEventLoopUntil("nsDocumentViewer::PermitUnload"_ns,
|
|
[&]() { return done; });
|
|
|
|
mInPermitUnloadPrompt = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
MOZ_CAN_RUN_SCRIPT_BOUNDARY PermitUnloadResult
|
|
nsDocumentViewer::DispatchBeforeUnload() {
|
|
AutoDontWarnAboutSyncXHR disableSyncXHRWarning;
|
|
|
|
if (!mDocument || mInPermitUnload || mInPermitUnloadPrompt) {
|
|
return eAllowNavigation;
|
|
}
|
|
|
|
// First, get the script global object from the document...
|
|
RefPtr<nsGlobalWindowOuter> window =
|
|
nsGlobalWindowOuter::Cast(mDocument->GetWindow());
|
|
if (!window) {
|
|
// This is odd, but not fatal
|
|
NS_WARNING("window not set for document!");
|
|
return eAllowNavigation;
|
|
}
|
|
|
|
NS_ASSERTION(nsContentUtils::IsSafeToRunScript(), "This is unsafe");
|
|
|
|
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#prompt-to-unload-a-document
|
|
// Create an RAII object on mDocument that will increment the
|
|
// should-ignore-opens-during-unload counter on initialization
|
|
// and decrement it again when it goes out of score (regardless
|
|
// of how we exit this function).
|
|
IgnoreOpensDuringUnload ignoreOpens(mDocument);
|
|
|
|
// Now, fire an BeforeUnload event to the document and see if it's ok
|
|
// to unload...
|
|
nsPresContext* presContext = mDocument->GetPresContext();
|
|
RefPtr<BeforeUnloadEvent> event =
|
|
new BeforeUnloadEvent(mDocument, presContext, nullptr);
|
|
event->InitEvent(u"beforeunload"_ns, false, true);
|
|
|
|
// Dispatching to |window|, but using |document| as the target.
|
|
event->SetTarget(mDocument);
|
|
event->SetTrusted(true);
|
|
|
|
// In evil cases we might be destroyed while handling the
|
|
// onbeforeunload event, don't let that happen. (see also bug#331040)
|
|
RefPtr<nsDocumentViewer> kungFuDeathGrip(this);
|
|
|
|
{
|
|
// Never permit popups from the beforeunload handler, no matter
|
|
// how we get here.
|
|
AutoPopupStatePusher popupStatePusher(PopupBlocker::openAbused, true);
|
|
|
|
RefPtr<BrowsingContext> bc = mContainer->GetBrowsingContext();
|
|
NS_ASSERTION(bc, "should have a browsing context in document viewer");
|
|
|
|
// Never permit dialogs from the beforeunload handler
|
|
nsGlobalWindowOuter::TemporarilyDisableDialogs disableDialogs(bc);
|
|
|
|
Document::PageUnloadingEventTimeStamp timestamp(mDocument);
|
|
|
|
mInPermitUnload = true;
|
|
RefPtr<nsPresContext> presContext = mPresContext;
|
|
EventDispatcher::DispatchDOMEvent(window, nullptr, event, presContext,
|
|
nullptr);
|
|
mInPermitUnload = false;
|
|
}
|
|
|
|
nsAutoString text;
|
|
event->GetReturnValue(text);
|
|
|
|
// NB: we nullcheck mDocument because it might now be dead as a result of
|
|
// the event being dispatched.
|
|
if (window->AreDialogsEnabled() && mDocument &&
|
|
!(mDocument->GetSandboxFlags() & SANDBOXED_MODALS) &&
|
|
(!StaticPrefs::dom_require_user_interaction_for_beforeunload() ||
|
|
mDocument->UserHasInteracted()) &&
|
|
(event->WidgetEventPtr()->DefaultPrevented() || !text.IsEmpty())) {
|
|
return eRequestBlockNavigation;
|
|
}
|
|
return eAllowNavigation;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetBeforeUnloadFiring(bool* aInEvent) {
|
|
*aInEvent = mInPermitUnload;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetInPermitUnload(bool* aInEvent) {
|
|
*aInEvent = mInPermitUnloadPrompt;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::PageHide(bool aIsUnload) {
|
|
AutoDontWarnAboutSyncXHR disableSyncXHRWarning;
|
|
|
|
mHidden = true;
|
|
|
|
if (!mDocument) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
if (aIsUnload) {
|
|
// Poke the GC. The window might be collectable garbage now.
|
|
nsJSContext::PokeGC(JS::GCReason::PAGE_HIDE,
|
|
mDocument->GetWrapperPreserveColor(),
|
|
TimeDuration::FromMilliseconds(
|
|
StaticPrefs::javascript_options_gc_delay() * 2));
|
|
}
|
|
|
|
mDocument->OnPageHide(!aIsUnload, nullptr);
|
|
|
|
// inform the window so that the focus state is reset.
|
|
NS_ENSURE_STATE(mDocument);
|
|
nsPIDOMWindowOuter* window = mDocument->GetWindow();
|
|
if (window) window->PageHidden();
|
|
|
|
if (aIsUnload) {
|
|
// if Destroy() was called during OnPageHide(), mDocument is nullptr.
|
|
NS_ENSURE_STATE(mDocument);
|
|
|
|
// First, get the window from the document...
|
|
RefPtr<nsPIDOMWindowOuter> window = mDocument->GetWindow();
|
|
|
|
if (!window) {
|
|
// Fail if no window is available...
|
|
NS_WARNING("window not set for document!");
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#unload-a-document
|
|
// Create an RAII object on mDocument that will increment the
|
|
// should-ignore-opens-during-unload counter on initialization
|
|
// and decrement it again when it goes out of scope.
|
|
IgnoreOpensDuringUnload ignoreOpens(mDocument);
|
|
|
|
// Now, fire an Unload event to the document...
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
WidgetEvent event(true, eUnload);
|
|
event.mFlags.mBubbles = false;
|
|
// XXX Dispatching to |window|, but using |document| as the target.
|
|
event.mTarget = mDocument;
|
|
|
|
// Never permit popups from the unload handler, no matter how we get
|
|
// here.
|
|
AutoPopupStatePusher popupStatePusher(PopupBlocker::openAbused, true);
|
|
|
|
Document::PageUnloadingEventTimeStamp timestamp(mDocument);
|
|
|
|
RefPtr<nsPresContext> presContext = mPresContext;
|
|
// MOZ_KnownLive due to bug 1506441
|
|
EventDispatcher::Dispatch(MOZ_KnownLive(nsGlobalWindowOuter::Cast(window)),
|
|
presContext, &event, nullptr, &status);
|
|
}
|
|
|
|
// look for open menupopups and close them after the unload event, in case
|
|
// the unload event listeners open any new popups
|
|
nsContentUtils::HidePopupsInDocument(mDocument);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
static void AttachContainerRecurse(nsIDocShell* aShell) {
|
|
nsCOMPtr<nsIDocumentViewer> viewer;
|
|
aShell->GetDocViewer(getter_AddRefs(viewer));
|
|
if (viewer) {
|
|
viewer->SetIsHidden(false);
|
|
Document* doc = viewer->GetDocument();
|
|
if (doc) {
|
|
doc->SetContainer(static_cast<nsDocShell*>(aShell));
|
|
}
|
|
if (PresShell* presShell = viewer->GetPresShell()) {
|
|
presShell->SetForwardingContainer(WeakPtr<nsDocShell>());
|
|
}
|
|
}
|
|
|
|
// Now recurse through the children
|
|
int32_t childCount;
|
|
aShell->GetInProcessChildCount(&childCount);
|
|
for (int32_t i = 0; i < childCount; ++i) {
|
|
nsCOMPtr<nsIDocShellTreeItem> childItem;
|
|
aShell->GetInProcessChildAt(i, getter_AddRefs(childItem));
|
|
nsCOMPtr<nsIDocShell> shell = do_QueryInterface(childItem);
|
|
AttachContainerRecurse(shell);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Open(nsISupports* aState, nsISHEntry* aSHEntry) {
|
|
NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
if (mDocument) {
|
|
mDocument->SetContainer(mContainer);
|
|
}
|
|
|
|
nsresult rv = InitInternal(mParentWidget, aState, nullptr, mBounds, false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mHidden = false;
|
|
|
|
if (mPresShell) mPresShell->SetForwardingContainer(WeakPtr<nsDocShell>());
|
|
|
|
// Rehook the child presentations. The child shells are still in
|
|
// session history, so get them from there.
|
|
|
|
if (aSHEntry) {
|
|
nsCOMPtr<nsIDocShellTreeItem> item;
|
|
int32_t itemIndex = 0;
|
|
while (NS_SUCCEEDED(
|
|
aSHEntry->ChildShellAt(itemIndex++, getter_AddRefs(item))) &&
|
|
item) {
|
|
nsCOMPtr<nsIDocShell> shell = do_QueryInterface(item);
|
|
AttachContainerRecurse(shell);
|
|
}
|
|
}
|
|
|
|
SyncParentSubDocMap();
|
|
|
|
ReinitializeFocusListener();
|
|
|
|
// XXX re-enable image animations once that works correctly
|
|
|
|
PrepareToStartLoad();
|
|
|
|
// When loading a page from the bfcache with puppet widgets, we do the
|
|
// widget attachment here (it is otherwise done in MakeWindow, which is
|
|
// called for non-bfcache pages in the history, but not bfcache pages).
|
|
// Attachment is necessary, since we get detached when another page
|
|
// is browsed to. That is, if we are one page A, then when we go to
|
|
// page B, we detach. So page A's view has no widget. If we then go
|
|
// back to it, and it is in the bfcache, we will use that view, which
|
|
// doesn't have a widget. The attach call here will properly attach us.
|
|
if (nsIWidget::UsePuppetWidgets() && mPresContext &&
|
|
ShouldAttachToTopLevel()) {
|
|
// If the old view is already attached to our parent, detach
|
|
DetachFromTopLevelWidget();
|
|
|
|
nsViewManager* vm = GetViewManager();
|
|
MOZ_ASSERT(vm, "no view manager");
|
|
nsView* v = vm->GetRootView();
|
|
MOZ_ASSERT(v, "no root view");
|
|
MOZ_ASSERT(mParentWidget, "no mParentWidget to set");
|
|
v->AttachToTopLevelWidget(mParentWidget);
|
|
|
|
mAttachedToParent = true;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Close(nsISHEntry* aSHEntry) {
|
|
// All callers are supposed to call close to break circular
|
|
// references. If we do this stuff in the destructor, the
|
|
// destructor might never be called (especially if we're being
|
|
// used from JS.
|
|
|
|
mSHEntry = aSHEntry;
|
|
|
|
// Close is also needed to disable scripts during paint suppression,
|
|
// since we transfer the existing global object to the new document
|
|
// that is loaded. In the future, the global object may become a proxy
|
|
// for an object that can be switched in and out so that we don't need
|
|
// to disable scripts during paint suppression.
|
|
|
|
if (!mDocument) return NS_OK;
|
|
|
|
if (mSHEntry) {
|
|
if (mBFCachePreventionObserver) {
|
|
mBFCachePreventionObserver->Disconnect();
|
|
}
|
|
mBFCachePreventionObserver = new BFCachePreventionObserver(mDocument);
|
|
mDocument->AddMutationObserver(mBFCachePreventionObserver);
|
|
}
|
|
|
|
#ifdef NS_PRINTING
|
|
// A Close was called while we were printing
|
|
// so don't clear the ScriptGlobalObject
|
|
// or clear the mDocument below
|
|
if (mPrintJob && !mClosingWhilePrinting) {
|
|
mClosingWhilePrinting = true;
|
|
} else
|
|
#endif
|
|
{
|
|
// out of band cleanup of docshell
|
|
mDocument->SetScriptGlobalObject(nullptr);
|
|
|
|
if (!mSHEntry && mDocument) mDocument->RemovedFromDocShell();
|
|
}
|
|
|
|
RemoveFocusListener();
|
|
return NS_OK;
|
|
}
|
|
|
|
static void DetachContainerRecurse(nsIDocShell* aShell) {
|
|
// Unhook this docshell's presentation
|
|
aShell->SynchronizeLayoutHistoryState();
|
|
nsCOMPtr<nsIDocumentViewer> viewer;
|
|
aShell->GetDocViewer(getter_AddRefs(viewer));
|
|
if (viewer) {
|
|
if (Document* doc = viewer->GetDocument()) {
|
|
doc->SetContainer(nullptr);
|
|
}
|
|
if (PresShell* presShell = viewer->GetPresShell()) {
|
|
auto weakShell = static_cast<nsDocShell*>(aShell);
|
|
presShell->SetForwardingContainer(weakShell);
|
|
}
|
|
}
|
|
|
|
// Now recurse through the children
|
|
int32_t childCount;
|
|
aShell->GetInProcessChildCount(&childCount);
|
|
for (int32_t i = 0; i < childCount; ++i) {
|
|
nsCOMPtr<nsIDocShellTreeItem> childItem;
|
|
aShell->GetInProcessChildAt(i, getter_AddRefs(childItem));
|
|
nsCOMPtr<nsIDocShell> shell = do_QueryInterface(childItem);
|
|
DetachContainerRecurse(shell);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Destroy() {
|
|
// Don't let the document get unloaded while we are printing.
|
|
// this could happen if we hit the back button during printing.
|
|
// We also keep the viewer from being cached in session history, since
|
|
// we require all documents there to be sanitized.
|
|
if (mDestroyBlockedCount != 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef NS_PRINTING
|
|
// Here is where we check to see if the document was still being prepared
|
|
// for printing when it was asked to be destroy from someone externally
|
|
// This usually happens if the document is unloaded while the user is in the
|
|
// Print Dialog
|
|
//
|
|
// So we flip the bool to remember that the document is going away
|
|
// and we can clean up and abort later after returning from the Print Dialog
|
|
if (mPrintJob && mPrintJob->CheckBeforeDestroy()) {
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
// We want to make sure to disconnect mBFCachePreventionObserver before we
|
|
// Sanitize() below.
|
|
if (mBFCachePreventionObserver) {
|
|
mBFCachePreventionObserver->Disconnect();
|
|
mBFCachePreventionObserver = nullptr;
|
|
}
|
|
|
|
if (mSHEntry && mDocument && !mDocument->IsBFCachingAllowed()) {
|
|
// Just drop the SHEntry now and pretend like we never even tried to bfcache
|
|
// this viewer. This should only happen when someone calls
|
|
// DisallowBFCaching() after CanSavePresentation() already ran. Ensure that
|
|
// the SHEntry has no viewer and its state is synced up. We want to do this
|
|
// via a stack reference, in case those calls mess with our members.
|
|
MOZ_LOG(gPageCacheLog, LogLevel::Debug,
|
|
("BFCache not allowed, dropping SHEntry"));
|
|
nsCOMPtr<nsISHEntry> shEntry = std::move(mSHEntry);
|
|
shEntry->SetDocumentViewer(nullptr);
|
|
shEntry->SyncPresentationState();
|
|
}
|
|
|
|
// If we were told to put ourselves into session history instead of destroy
|
|
// the presentation, do that now.
|
|
if (mSHEntry) {
|
|
if (mPresShell) mPresShell->Freeze();
|
|
|
|
// Make sure the presentation isn't torn down by Hide().
|
|
mSHEntry->SetSticky(mIsSticky);
|
|
mIsSticky = true;
|
|
|
|
// Remove our root view from the view hierarchy.
|
|
if (mPresShell) {
|
|
nsViewManager* vm = mPresShell->GetViewManager();
|
|
if (vm) {
|
|
nsView* rootView = vm->GetRootView();
|
|
|
|
if (rootView) {
|
|
nsView* rootViewParent = rootView->GetParent();
|
|
if (rootViewParent) {
|
|
nsView* subdocview = rootViewParent->GetParent();
|
|
if (subdocview) {
|
|
nsIFrame* f = subdocview->GetFrame();
|
|
if (f) {
|
|
nsSubDocumentFrame* s = do_QueryFrame(f);
|
|
if (s) {
|
|
s->ClearDisplayItems();
|
|
}
|
|
}
|
|
}
|
|
nsViewManager* parentVM = rootViewParent->GetViewManager();
|
|
if (parentVM) {
|
|
parentVM->RemoveChild(rootView);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Hide();
|
|
|
|
// This is after Hide() so that the user doesn't see the inputs clear.
|
|
if (mDocument) {
|
|
mDocument->Sanitize();
|
|
}
|
|
|
|
// Reverse ownership. Do this *after* calling sanitize so that sanitize
|
|
// doesn't cause mutations that make the SHEntry drop the presentation
|
|
|
|
// Grab a reference to mSHEntry before calling into things like
|
|
// SyncPresentationState that might mess with our members.
|
|
nsCOMPtr<nsISHEntry> shEntry =
|
|
std::move(mSHEntry); // we'll need this below
|
|
|
|
MOZ_LOG(gPageCacheLog, LogLevel::Debug,
|
|
("Storing content viewer into cache entry"));
|
|
shEntry->SetDocumentViewer(this);
|
|
|
|
// Always sync the presentation state. That way even if someone screws up
|
|
// and shEntry has no window state at this point we'll be ok; we just won't
|
|
// cache ourselves.
|
|
shEntry->SyncPresentationState();
|
|
// XXX Synchronize layout history state to parent once bfcache is supported
|
|
// in session-history-in-parent.
|
|
|
|
// Shut down accessibility for the document before we start to tear it down.
|
|
#ifdef ACCESSIBILITY
|
|
if (mPresShell) {
|
|
a11y::DocAccessible* docAcc = mPresShell->GetDocAccessible();
|
|
if (docAcc) {
|
|
docAcc->Shutdown();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Break the link from the document/presentation to the docshell, so that
|
|
// link traversals cannot affect the currently-loaded document.
|
|
// When the presentation is restored, Open() and InitInternal() will reset
|
|
// these pointers to their original values.
|
|
|
|
if (mDocument) {
|
|
mDocument->SetContainer(nullptr);
|
|
}
|
|
if (mPresShell) {
|
|
mPresShell->SetForwardingContainer(mContainer);
|
|
}
|
|
|
|
// Do the same for our children. Note that we need to get the child
|
|
// docshells from the SHEntry now; the docshell will have cleared them.
|
|
nsCOMPtr<nsIDocShellTreeItem> item;
|
|
int32_t itemIndex = 0;
|
|
while (NS_SUCCEEDED(
|
|
shEntry->ChildShellAt(itemIndex++, getter_AddRefs(item))) &&
|
|
item) {
|
|
nsCOMPtr<nsIDocShell> shell = do_QueryInterface(item);
|
|
DetachContainerRecurse(shell);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// The document was not put in the bfcache
|
|
|
|
// Protect against pres shell destruction running scripts and re-entrantly
|
|
// creating a new presentation.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
if (mPresShell) {
|
|
DestroyPresShell();
|
|
}
|
|
if (mDocument) {
|
|
mDocument->Destroy();
|
|
mDocument = nullptr;
|
|
}
|
|
|
|
// All callers are supposed to call destroy to break circular
|
|
// references. If we do this stuff in the destructor, the
|
|
// destructor might never be called (especially if we're being
|
|
// used from JS.
|
|
|
|
#ifdef NS_PRINTING
|
|
if (mPrintJob) {
|
|
RefPtr<nsPrintJob> printJob = std::move(mPrintJob);
|
|
# ifdef NS_PRINT_PREVIEW
|
|
if (printJob->CreatedForPrintPreview()) {
|
|
printJob->FinishPrintPreview();
|
|
}
|
|
# endif
|
|
printJob->Destroy();
|
|
MOZ_ASSERT(!mPrintJob,
|
|
"mPrintJob shouldn't be recreated while destroying it");
|
|
}
|
|
#endif
|
|
|
|
// Avoid leaking the old viewer.
|
|
if (mPreviousViewer) {
|
|
mPreviousViewer->Destroy();
|
|
mPreviousViewer = nullptr;
|
|
}
|
|
|
|
mDeviceContext = nullptr;
|
|
|
|
if (mPresContext) {
|
|
DestroyPresContext();
|
|
}
|
|
|
|
mWindow = nullptr;
|
|
mViewManager = nullptr;
|
|
mContainer = WeakPtr<nsDocShell>();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Stop(void) {
|
|
NS_ASSERTION(mDocument, "Stop called too early or too late");
|
|
if (mDocument) {
|
|
mDocument->StopDocumentLoad();
|
|
}
|
|
|
|
mStopped = true;
|
|
|
|
if (!mLoaded && mPresShell) {
|
|
// Well, we might as well paint what we have so far.
|
|
RefPtr<PresShell> presShell = mPresShell; // bug 378682
|
|
presShell->UnsuppressPainting();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetDOMDocument(Document** aResult) {
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE);
|
|
nsCOMPtr<Document> document = mDocument;
|
|
document.forget(aResult);
|
|
return NS_OK;
|
|
}
|
|
|
|
Document* nsDocumentViewer::GetDocument() { return mDocument; }
|
|
|
|
nsresult nsDocumentViewer::SetDocument(Document* aDocument) {
|
|
// Assumptions:
|
|
//
|
|
// 1) this document viewer has been initialized with a call to Init().
|
|
// 2) the stylesheets associated with the document have been added
|
|
// to the document.
|
|
|
|
// XXX Right now, this method assumes that the layout of the current
|
|
// document hasn't started yet. More cleanup will probably be
|
|
// necessary to make this method work for the case when layout *has*
|
|
// occurred for the current document.
|
|
// That work can happen when and if it is needed.
|
|
|
|
if (!aDocument) return NS_ERROR_NULL_POINTER;
|
|
|
|
return SetDocumentInternal(aDocument, false);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::SetDocumentInternal(Document* aDocument,
|
|
bool aForceReuseInnerWindow) {
|
|
MOZ_ASSERT(aDocument);
|
|
|
|
// Set new container
|
|
aDocument->SetContainer(mContainer);
|
|
|
|
if (mDocument != aDocument) {
|
|
if (aForceReuseInnerWindow) {
|
|
// Transfer the navigation timing information to the new document, since
|
|
// we're keeping the same inner and hence should really have the same
|
|
// timing information.
|
|
aDocument->SetNavigationTiming(mDocument->GetNavigationTiming());
|
|
}
|
|
|
|
if (mDocument &&
|
|
(mDocument->IsStaticDocument() || aDocument->IsStaticDocument())) {
|
|
nsContentUtils::AddScriptRunner(NewRunnableMethod(
|
|
"Document::Destroy", mDocument, &Document::Destroy));
|
|
}
|
|
|
|
// Clear the list of old child docshells. Child docshells for the new
|
|
// document will be constructed as frames are created.
|
|
if (!aDocument->IsStaticDocument()) {
|
|
nsCOMPtr<nsIDocShell> node(mContainer);
|
|
if (node) {
|
|
int32_t count;
|
|
node->GetInProcessChildCount(&count);
|
|
for (int32_t i = 0; i < count; ++i) {
|
|
nsCOMPtr<nsIDocShellTreeItem> child;
|
|
node->GetInProcessChildAt(0, getter_AddRefs(child));
|
|
node->RemoveChild(child);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Replace the old document with the new one. Do this only when
|
|
// the new document really is a new document.
|
|
mDocument = aDocument;
|
|
|
|
// Set the script global object on the new document
|
|
nsCOMPtr<nsPIDOMWindowOuter> window =
|
|
mContainer ? mContainer->GetWindow() : nullptr;
|
|
if (window) {
|
|
nsresult rv =
|
|
window->SetNewDocument(aDocument, nullptr, aForceReuseInnerWindow);
|
|
if (NS_FAILED(rv)) {
|
|
Destroy();
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult rv = SyncParentSubDocMap();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Replace the current pres shell with a new shell for the new document
|
|
|
|
// Protect against pres shell destruction running scripts and re-entrantly
|
|
// creating a new presentation.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
if (mPresShell) {
|
|
DestroyPresShell();
|
|
}
|
|
|
|
if (mPresContext) {
|
|
DestroyPresContext();
|
|
|
|
mWindow = nullptr;
|
|
rv = InitInternal(mParentWidget, nullptr, nullptr, mBounds, true, true,
|
|
false);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
PresShell* nsDocumentViewer::GetPresShell() { return mPresShell; }
|
|
|
|
nsPresContext* nsDocumentViewer::GetPresContext() { return mPresContext; }
|
|
|
|
nsViewManager* nsDocumentViewer::GetViewManager() { return mViewManager; }
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetBounds(nsIntRect& aResult) {
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE);
|
|
aResult = mBounds;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIDocumentViewer* nsDocumentViewer::GetPreviousViewer() {
|
|
return mPreviousViewer;
|
|
}
|
|
|
|
void nsDocumentViewer::SetPreviousViewer(nsIDocumentViewer* aViewer) {
|
|
// NOTE: |Show| sets |mPreviousViewer| to null without calling this
|
|
// function.
|
|
|
|
if (aViewer) {
|
|
NS_ASSERTION(!mPreviousViewer,
|
|
"can't set previous viewer when there already is one");
|
|
|
|
// In a multiple chaining situation (which occurs when running a thrashing
|
|
// test like i-bench or jrgm's tests with no delay), we can build up a
|
|
// whole chain of viewers. In order to avoid this, we always set our
|
|
// previous viewer to the MOST previous viewer in the chain, and then dump
|
|
// the intermediate link from the chain. This ensures that at most only 2
|
|
// documents are alive and undestroyed at any given time (the one that is
|
|
// showing and the one that is loading with painting suppressed). It's very
|
|
// important that if this ever gets changed the code before the
|
|
// RestorePresentation call in nsDocShell::InternalLoad be changed
|
|
// accordingly.
|
|
//
|
|
// Make sure we hold a strong ref to prevViewer here, since we'll
|
|
// tell aViewer to drop it.
|
|
nsCOMPtr<nsIDocumentViewer> prevViewer = aViewer->GetPreviousViewer();
|
|
if (prevViewer) {
|
|
aViewer->SetPreviousViewer(nullptr);
|
|
aViewer->Destroy();
|
|
return SetPreviousViewer(prevViewer);
|
|
}
|
|
}
|
|
|
|
mPreviousViewer = aViewer;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::SetBoundsWithFlags(const nsIntRect& aBounds,
|
|
uint32_t aFlags) {
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE);
|
|
|
|
bool boundsChanged = !mBounds.IsEqualEdges(aBounds);
|
|
mBounds = aBounds;
|
|
|
|
if (mWindow && !mAttachedToParent) {
|
|
// Resize the widget, but don't trigger repaint. Layout will generate
|
|
// repaint requests during reflow.
|
|
mWindow->Resize(aBounds.x, aBounds.y, aBounds.width, aBounds.height, false);
|
|
} else if (mPresContext && mViewManager) {
|
|
// Ensure presContext's deviceContext is up to date, as we sometimes get
|
|
// here before a resolution-change notification has been fully handled
|
|
// during display configuration changes, especially when there are lots
|
|
// of windows/widgets competing to handle the notifications.
|
|
// (See bug 1154125.)
|
|
if (mPresContext->DeviceContext()->CheckDPIChange()) {
|
|
mPresContext->UIResolutionChangedSync();
|
|
}
|
|
|
|
int32_t p2a = mPresContext->AppUnitsPerDevPixel();
|
|
nscoord width = NSIntPixelsToAppUnits(mBounds.width, p2a);
|
|
nscoord height = NSIntPixelsToAppUnits(mBounds.height, p2a);
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
if (boundsChanged && rootView) {
|
|
nsRect viewDims = rootView->GetDimensions();
|
|
// If the view/frame tree and prescontext visible area already has the new
|
|
// size but we did not, then it's likely that we got reflowed in response
|
|
// to a call to GetContentSize. Thus there is a disconnect between the
|
|
// size on the document viewer/docshell/containing widget and view
|
|
// tree/frame tree/prescontext visible area). SetWindowDimensions compares
|
|
// to the root view dimenstions to determine if it needs to do anything;
|
|
// if they are the same as the new size it won't do anything, but we still
|
|
// need to invalidate because what we want to draw to the screen has
|
|
// changed.
|
|
if (viewDims.width == width && viewDims.height == height) {
|
|
nsIFrame* f = rootView->GetFrame();
|
|
if (f) {
|
|
f->InvalidateFrame();
|
|
}
|
|
}
|
|
}
|
|
|
|
mViewManager->SetWindowDimensions(
|
|
width, height, !!(aFlags & nsIDocumentViewer::eDelayResize));
|
|
}
|
|
|
|
// If there's a previous viewer, it's the one that's actually showing,
|
|
// so be sure to resize it as well so it paints over the right area.
|
|
// This may slow down the performance of the new page load, but resize
|
|
// during load is also probably a relatively unusual condition
|
|
// relating to things being hidden while something is loaded. It so
|
|
// happens that Firefox does this a good bit with its infobar, and it
|
|
// looks ugly if we don't do this.
|
|
if (mPreviousViewer) {
|
|
nsCOMPtr<nsIDocumentViewer> previousViewer = mPreviousViewer;
|
|
previousViewer->SetBounds(aBounds);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::SetBounds(const nsIntRect& aBounds) {
|
|
return SetBoundsWithFlags(aBounds, 0);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Move(int32_t aX, int32_t aY) {
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE);
|
|
mBounds.MoveTo(aX, aY);
|
|
if (mWindow) {
|
|
mWindow->Move(aX, aY);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Show() {
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE);
|
|
|
|
// We don't need the previous viewer anymore since we're not
|
|
// displaying it.
|
|
if (mPreviousViewer) {
|
|
// This little dance *may* only be to keep
|
|
// PresShell::EndObservingDocument happy, but I'm not sure.
|
|
nsCOMPtr<nsIDocumentViewer> prevViewer(mPreviousViewer);
|
|
mPreviousViewer = nullptr;
|
|
prevViewer->Destroy();
|
|
|
|
// Make sure we don't have too many cached ContentViewers
|
|
nsCOMPtr<nsIDocShellTreeItem> treeItem(mContainer);
|
|
if (treeItem) {
|
|
// We need to find the root DocShell since only that object has an
|
|
// SHistory and we need the SHistory to evict content viewers
|
|
nsCOMPtr<nsIDocShellTreeItem> root;
|
|
treeItem->GetInProcessSameTypeRootTreeItem(getter_AddRefs(root));
|
|
nsCOMPtr<nsIWebNavigation> webNav = do_QueryInterface(root);
|
|
RefPtr<ChildSHistory> history = webNav->GetSessionHistory();
|
|
if (!mozilla::SessionHistoryInParent() && history) {
|
|
int32_t prevIndex, loadedIndex;
|
|
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(treeItem);
|
|
docShell->GetPreviousEntryIndex(&prevIndex);
|
|
docShell->GetLoadedEntryIndex(&loadedIndex);
|
|
MOZ_LOG(gPageCacheLog, LogLevel::Verbose,
|
|
("About to evict content viewers: prev=%d, loaded=%d",
|
|
prevIndex, loadedIndex));
|
|
history->LegacySHistory()->EvictOutOfRangeDocumentViewers(loadedIndex);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mWindow) {
|
|
// When attached to a top level xul window, we do not need to call
|
|
// Show on the widget. Underlying window management code handles
|
|
// this when the window is initialized.
|
|
if (!mAttachedToParent) {
|
|
mWindow->Show(true);
|
|
}
|
|
}
|
|
|
|
// Hold on to the document so we can use it after the script blocker below
|
|
// has been released (which might re-entrantly call into other
|
|
// nsDocumentViewer methods).
|
|
nsCOMPtr<Document> document = mDocument;
|
|
|
|
if (mDocument && !mPresShell) {
|
|
// The InitPresentationStuff call below requires a script blocker, because
|
|
// its PresShell::Initialize call can cause scripts to run and therefore
|
|
// re-entrant calls to nsDocumentViewer methods to be made.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
NS_ASSERTION(!mWindow, "Window already created but no presshell?");
|
|
|
|
nsCOMPtr<nsIBaseWindow> base_win(mContainer);
|
|
if (base_win) {
|
|
base_win->GetParentWidget(&mParentWidget);
|
|
if (mParentWidget) {
|
|
// GetParentWidget AddRefs, but mParentWidget is weak
|
|
mParentWidget->Release();
|
|
}
|
|
}
|
|
|
|
nsView* containerView = FindContainerView();
|
|
|
|
nsresult rv = CreateDeviceContext(containerView);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Create presentation context
|
|
NS_ASSERTION(!mPresContext,
|
|
"Shouldn't have a prescontext if we have no shell!");
|
|
mPresContext = CreatePresContext(mDocument, nsPresContext::eContext_Galley,
|
|
containerView);
|
|
NS_ENSURE_TRUE(mPresContext, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
rv = mPresContext->Init(mDeviceContext);
|
|
if (NS_FAILED(rv)) {
|
|
mPresContext = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
rv = MakeWindow(nsSize(mPresContext->DevPixelsToAppUnits(mBounds.width),
|
|
mPresContext->DevPixelsToAppUnits(mBounds.height)),
|
|
containerView);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
if (mPresContext) {
|
|
Hide();
|
|
|
|
rv = InitPresentationStuff(mDocument->MayStartLayout());
|
|
}
|
|
|
|
// If we get here the document load has already started and the
|
|
// window is shown because some JS on the page caused it to be
|
|
// shown...
|
|
|
|
if (mPresShell) {
|
|
RefPtr<PresShell> presShell = mPresShell; // bug 378682
|
|
presShell->UnsuppressPainting();
|
|
}
|
|
}
|
|
|
|
// Notify observers that a new page has been shown. This will get run
|
|
// from the event loop after we actually draw the page.
|
|
RefPtr<nsDocumentShownDispatcher> event =
|
|
new nsDocumentShownDispatcher(document);
|
|
document->Dispatch(event.forget());
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Hide() {
|
|
if (!mAttachedToParent && mWindow) {
|
|
mWindow->Show(false);
|
|
}
|
|
|
|
if (!mPresShell) return NS_OK;
|
|
|
|
NS_ASSERTION(mPresContext, "Can't have a presshell and no prescontext!");
|
|
|
|
// Avoid leaking the old viewer.
|
|
if (mPreviousViewer) {
|
|
mPreviousViewer->Destroy();
|
|
mPreviousViewer = nullptr;
|
|
}
|
|
|
|
if (mIsSticky) {
|
|
// This window is sticky, that means that it might be shown again
|
|
// and we don't want the presshell n' all that to be thrown away
|
|
// just because the window is hidden.
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell(mContainer);
|
|
if (docShell) {
|
|
#ifdef DEBUG
|
|
nsCOMPtr<nsIDocumentViewer> currentViewer;
|
|
docShell->GetDocViewer(getter_AddRefs(currentViewer));
|
|
MOZ_ASSERT(currentViewer == this);
|
|
#endif
|
|
nsCOMPtr<nsILayoutHistoryState> layoutState;
|
|
mPresShell->CaptureHistoryState(getter_AddRefs(layoutState));
|
|
}
|
|
|
|
// Do not run ScriptRunners queued by DestroyPresShell() in the intermediate
|
|
// state before we're done destroying PresShell, PresContext, ViewManager,
|
|
// etc.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
DestroyPresShell();
|
|
|
|
DestroyPresContext();
|
|
|
|
mViewManager = nullptr;
|
|
mWindow = nullptr;
|
|
mDeviceContext = nullptr;
|
|
mParentWidget = nullptr;
|
|
|
|
nsCOMPtr<nsIBaseWindow> base_win(mContainer);
|
|
|
|
if (base_win && !mAttachedToParent) {
|
|
base_win->SetParentWidget(nullptr);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetSticky(bool* aSticky) {
|
|
*aSticky = mIsSticky;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::SetSticky(bool aSticky) {
|
|
mIsSticky = aSticky;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::ClearHistoryEntry() {
|
|
if (mDocument) {
|
|
nsJSContext::PokeGC(JS::GCReason::PAGE_HIDE,
|
|
mDocument->GetWrapperPreserveColor(),
|
|
TimeDuration::FromMilliseconds(
|
|
StaticPrefs::javascript_options_gc_delay() * 2));
|
|
}
|
|
|
|
mSHEntry = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
//-------------------------------------------------------
|
|
|
|
nsresult nsDocumentViewer::MakeWindow(const nsSize& aSize,
|
|
nsView* aContainerView) {
|
|
if (GetIsPrintPreview()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
bool shouldAttach = ShouldAttachToTopLevel();
|
|
|
|
if (shouldAttach) {
|
|
// If the old view is already attached to our parent, detach
|
|
DetachFromTopLevelWidget();
|
|
}
|
|
|
|
mViewManager = new nsViewManager();
|
|
|
|
nsDeviceContext* dx = mPresContext->DeviceContext();
|
|
|
|
nsresult rv = mViewManager->Init(dx);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
// The root view is always at 0,0.
|
|
nsRect tbounds(nsPoint(0, 0), aSize);
|
|
// Create a view
|
|
nsView* view = mViewManager->CreateView(tbounds, aContainerView);
|
|
if (!view) return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// Create a widget if we were given a parent widget or don't have a
|
|
// container view that we can hook up to without a widget.
|
|
// Don't create widgets for ResourceDocs (external resources & svg images),
|
|
// because when they're displayed, they're painted into *another* document's
|
|
// widget.
|
|
if (!mDocument->IsResourceDoc() && (mParentWidget || !aContainerView)) {
|
|
// pass in a native widget to be the parent widget ONLY if the view
|
|
// hierarchy will stand alone. otherwise the view will find its own parent
|
|
// widget and "do the right thing" to establish a parent/child widget
|
|
// relationship
|
|
widget::InitData initData;
|
|
widget::InitData* initDataPtr;
|
|
if (!mParentWidget) {
|
|
initDataPtr = &initData;
|
|
initData.mWindowType = widget::WindowType::Invisible;
|
|
} else {
|
|
initDataPtr = nullptr;
|
|
}
|
|
|
|
if (shouldAttach) {
|
|
// Reuse the top level parent widget.
|
|
rv = view->AttachToTopLevelWidget(mParentWidget);
|
|
mAttachedToParent = true;
|
|
} else if (!aContainerView && mParentWidget) {
|
|
rv = view->CreateWidgetForParent(mParentWidget, initDataPtr, true, false);
|
|
} else {
|
|
rv = view->CreateWidget(initDataPtr, true, false);
|
|
}
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
// Setup hierarchical relationship in view manager
|
|
mViewManager->SetRootView(view);
|
|
|
|
mWindow = view->GetWidget();
|
|
|
|
// This SetFocus is necessary so the Arrow Key and Page Key events
|
|
// go to the scrolled view as soon as the Window is created instead of going
|
|
// to the browser window (this enables keyboard scrolling of the document)
|
|
// mWindow->SetFocus();
|
|
|
|
return rv;
|
|
}
|
|
|
|
void nsDocumentViewer::DetachFromTopLevelWidget() {
|
|
if (mViewManager) {
|
|
nsView* oldView = mViewManager->GetRootView();
|
|
if (oldView && oldView->IsAttachedToTopLevel()) {
|
|
oldView->DetachFromTopLevelWidget();
|
|
}
|
|
}
|
|
mAttachedToParent = false;
|
|
}
|
|
|
|
nsView* nsDocumentViewer::FindContainerView() {
|
|
if (!mContainer) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell(mContainer);
|
|
nsCOMPtr<nsPIDOMWindowOuter> pwin(docShell->GetWindow());
|
|
if (!pwin) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<Element> containerElement = pwin->GetFrameElementInternal();
|
|
if (!containerElement) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* subdocFrame = containerElement->GetPrimaryFrame();
|
|
if (!subdocFrame) {
|
|
// XXX Silenced by default in bug 1175289
|
|
LAYOUT_WARNING("Subdocument container has no frame");
|
|
return nullptr;
|
|
}
|
|
|
|
// Check subdocFrame just to be safe. If this somehow fails we treat that as
|
|
// display:none, the document is not displayed.
|
|
if (!subdocFrame->IsSubDocumentFrame()) {
|
|
NS_WARNING_ASSERTION(subdocFrame->Type() == LayoutFrameType::None,
|
|
"Subdocument container has non-subdocument frame");
|
|
return nullptr;
|
|
}
|
|
|
|
NS_ASSERTION(subdocFrame->GetView(), "Subdoc frames must have views");
|
|
return static_cast<nsSubDocumentFrame*>(subdocFrame)->EnsureInnerView();
|
|
}
|
|
|
|
nsresult nsDocumentViewer::CreateDeviceContext(nsView* aContainerView) {
|
|
MOZ_ASSERT(!mPresShell && !mWindow,
|
|
"This will screw up our existing presentation");
|
|
MOZ_ASSERT(mDocument, "Gotta have a document here");
|
|
|
|
Document* doc = mDocument->GetDisplayDocument();
|
|
if (doc) {
|
|
NS_ASSERTION(!aContainerView,
|
|
"External resource document embedded somewhere?");
|
|
// We want to use our display document's device context if possible
|
|
nsPresContext* ctx = doc->GetPresContext();
|
|
if (ctx) {
|
|
mDeviceContext = ctx->DeviceContext();
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Create a device context even if we already have one, since our widget
|
|
// might have changed.
|
|
nsIWidget* widget = nullptr;
|
|
if (aContainerView) {
|
|
widget = aContainerView->GetNearestWidget(nullptr);
|
|
}
|
|
if (!widget) {
|
|
widget = mParentWidget;
|
|
}
|
|
if (widget) {
|
|
widget = widget->GetTopLevelWidget();
|
|
}
|
|
|
|
mDeviceContext = new nsDeviceContext();
|
|
mDeviceContext->Init(widget);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Return the selection for the document. Note that text fields have their
|
|
// own selection, which cannot be accessed with this method.
|
|
mozilla::dom::Selection* nsDocumentViewer::GetDocumentSelection() {
|
|
if (!mPresShell) {
|
|
return nullptr;
|
|
}
|
|
|
|
return mPresShell->GetCurrentSelection(SelectionType::eNormal);
|
|
}
|
|
|
|
/* ============================================================================
|
|
* nsIDocumentViewerEdit
|
|
* ============================================================================
|
|
*/
|
|
|
|
MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODIMP nsDocumentViewer::ClearSelection() {
|
|
// use nsCopySupport::GetSelectionForCopy() ?
|
|
RefPtr<mozilla::dom::Selection> selection = GetDocumentSelection();
|
|
if (!selection) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
ErrorResult rv;
|
|
selection->CollapseToStart(rv);
|
|
return rv.StealNSResult();
|
|
}
|
|
|
|
MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODIMP nsDocumentViewer::SelectAll() {
|
|
// XXX this is a temporary implementation copied from nsWebShell
|
|
// for now. I think Document and friends should have some helper
|
|
// functions to make this easier.
|
|
|
|
// use nsCopySupport::GetSelectionForCopy() ?
|
|
RefPtr<mozilla::dom::Selection> selection = GetDocumentSelection();
|
|
if (!selection) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (!mDocument) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> bodyNode;
|
|
if (mDocument->IsHTMLOrXHTML()) {
|
|
// XXXbz why not just do GetBody() for all documents, then GetRootElement()
|
|
// if GetBody() is null?
|
|
bodyNode = mDocument->GetBody();
|
|
} else {
|
|
bodyNode = mDocument->GetRootElement();
|
|
}
|
|
if (!bodyNode) return NS_ERROR_FAILURE;
|
|
|
|
ErrorResult err;
|
|
selection->RemoveAllRanges(err);
|
|
if (err.Failed()) {
|
|
return err.StealNSResult();
|
|
}
|
|
|
|
mozilla::dom::Selection::AutoUserInitiated userSelection(selection);
|
|
selection->SelectAllChildren(*bodyNode, err);
|
|
return err.StealNSResult();
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::CopySelection() {
|
|
RefPtr<PresShell> presShell = mPresShell;
|
|
nsCopySupport::FireClipboardEvent(eCopy, nsIClipboard::kGlobalClipboard,
|
|
presShell, nullptr);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::CopyLinkLocation() {
|
|
NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED);
|
|
nsCOMPtr<nsINode> node = GetPopupLinkNode();
|
|
// make noise if we're not in a link
|
|
NS_ENSURE_TRUE(node, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<dom::Element> elm(do_QueryInterface(node));
|
|
NS_ENSURE_TRUE(elm, NS_ERROR_FAILURE);
|
|
|
|
nsAutoString locationText;
|
|
nsContentUtils::GetLinkLocation(elm, locationText);
|
|
if (locationText.IsEmpty()) return NS_ERROR_FAILURE;
|
|
|
|
nsresult rv = NS_OK;
|
|
nsCOMPtr<nsIClipboardHelper> clipboard(
|
|
do_GetService("@mozilla.org/widget/clipboardhelper;1", &rv));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// copy the href onto the clipboard
|
|
return clipboard->CopyString(locationText);
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::CopyImage(int32_t aCopyFlags) {
|
|
NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED);
|
|
nsCOMPtr<nsIImageLoadingContent> node = GetPopupImageNode();
|
|
// make noise if we're not in an image
|
|
NS_ENSURE_TRUE(node, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsILoadContext> loadContext(mContainer);
|
|
return nsCopySupport::ImageCopy(node, loadContext, aCopyFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::GetCopyable(bool* aCopyable) {
|
|
NS_ENSURE_ARG_POINTER(aCopyable);
|
|
*aCopyable = nsCopySupport::CanCopy(mDocument);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::GetContents(const char* mimeType,
|
|
bool selectionOnly,
|
|
nsAString& aOutValue) {
|
|
aOutValue.Truncate();
|
|
|
|
NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED);
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
// Now we have the selection. Make sure it's nonzero:
|
|
RefPtr<Selection> sel;
|
|
if (selectionOnly) {
|
|
sel = nsCopySupport::GetSelectionForCopy(mDocument);
|
|
NS_ENSURE_TRUE(sel, NS_ERROR_FAILURE);
|
|
|
|
if (NS_WARN_IF(sel->IsCollapsed())) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// call the copy code
|
|
return nsCopySupport::GetContents(nsDependentCString(mimeType), 0, sel,
|
|
mDocument, aOutValue);
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::GetCanGetContents(bool* aCanGetContents) {
|
|
NS_ENSURE_ARG_POINTER(aCanGetContents);
|
|
*aCanGetContents = false;
|
|
NS_ENSURE_STATE(mDocument);
|
|
*aCanGetContents = nsCopySupport::CanCopy(mDocument);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::SetCommandNode(nsINode* aNode) {
|
|
Document* document = GetDocument();
|
|
NS_ENSURE_STATE(document);
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window(document->GetWindow());
|
|
NS_ENSURE_TRUE(window, NS_ERROR_NOT_AVAILABLE);
|
|
|
|
nsCOMPtr<nsPIWindowRoot> root = window->GetTopWindowRoot();
|
|
NS_ENSURE_STATE(root);
|
|
|
|
root->SetPopupNode(aNode);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetDeviceFullZoomForTest(float* aDeviceFullZoom) {
|
|
NS_ENSURE_ARG_POINTER(aDeviceFullZoom);
|
|
nsPresContext* pc = GetPresContext();
|
|
*aDeviceFullZoom = pc ? pc->GetDeviceFullZoom() : 1.0;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::SetAuthorStyleDisabled(bool aStyleDisabled) {
|
|
if (mPresShell) {
|
|
mPresShell->SetAuthorStyleDisabled(aStyleDisabled);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetAuthorStyleDisabled(bool* aStyleDisabled) {
|
|
if (mPresShell) {
|
|
*aStyleDisabled = mPresShell->GetAuthorStyleDisabled();
|
|
} else {
|
|
*aStyleDisabled = false;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
/* [noscript,notxpcom] Encoding getHintCharset (); */
|
|
NS_IMETHODIMP_(const Encoding*)
|
|
nsDocumentViewer::GetReloadEncodingAndSource(int32_t* aSource) {
|
|
*aSource = mReloadEncodingSource;
|
|
if (kCharsetUninitialized == mReloadEncodingSource) {
|
|
return nullptr;
|
|
}
|
|
return mReloadEncoding;
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
nsDocumentViewer::SetReloadEncodingAndSource(const Encoding* aEncoding,
|
|
int32_t aSource) {
|
|
MOZ_ASSERT(
|
|
aSource == kCharsetUninitialized ||
|
|
(aSource >=
|
|
kCharsetFromFinalAutoDetectionWouldHaveBeenUTF8InitialWasASCII &&
|
|
aSource <=
|
|
kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLDInitialWasASCII) ||
|
|
aSource == kCharsetFromFinalUserForcedAutoDetection);
|
|
mReloadEncoding = aEncoding;
|
|
mReloadEncodingSource = aSource;
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
nsDocumentViewer::ForgetReloadEncoding() {
|
|
mReloadEncoding = nullptr;
|
|
mReloadEncodingSource = kCharsetUninitialized;
|
|
}
|
|
|
|
MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODIMP nsDocumentViewer::GetContentSize(
|
|
int32_t aMaxWidth, int32_t aMaxHeight, int32_t aPrefWidth, int32_t* aWidth,
|
|
int32_t* aHeight) {
|
|
RefPtr<BrowsingContext> bc = mContainer->GetBrowsingContext();
|
|
NS_ENSURE_TRUE(bc, NS_ERROR_NOT_AVAILABLE);
|
|
|
|
// It's only valid to access this from a top frame. Doesn't work from
|
|
// sub-frames.
|
|
NS_ENSURE_TRUE(bc->IsTop(), NS_ERROR_FAILURE);
|
|
|
|
// Convert max-width/height and pref-width to app units.
|
|
if (aMaxWidth > 0) {
|
|
aMaxWidth = CSSPixel::ToAppUnits(aMaxWidth);
|
|
} else {
|
|
aMaxWidth = NS_UNCONSTRAINEDSIZE;
|
|
}
|
|
if (aMaxHeight > 0) {
|
|
aMaxHeight = CSSPixel::ToAppUnits(aMaxHeight);
|
|
} else {
|
|
aMaxHeight = NS_UNCONSTRAINEDSIZE;
|
|
}
|
|
if (aPrefWidth > 0) {
|
|
aPrefWidth = CSSPixel::ToAppUnits(aPrefWidth);
|
|
} else {
|
|
aPrefWidth = 0;
|
|
}
|
|
|
|
RefPtr<PresShell> presShell = GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
|
|
|
|
// Flush out all content and style updates. We can't use a resize reflow
|
|
// because it won't change some sizes that a style change reflow will.
|
|
mDocument->FlushPendingNotifications(FlushType::Layout);
|
|
|
|
nsIFrame* root = presShell->GetRootFrame();
|
|
NS_ENSURE_TRUE(root, NS_ERROR_FAILURE);
|
|
|
|
WritingMode wm = root->GetWritingMode();
|
|
|
|
nscoord prefISize;
|
|
{
|
|
const auto& constraints = presShell->GetWindowSizeConstraints();
|
|
aMaxHeight = std::min(aMaxHeight, constraints.mMaxSize.height);
|
|
aMaxWidth = std::min(aMaxWidth, constraints.mMaxSize.width);
|
|
|
|
UniquePtr<gfxContext> rcx(presShell->CreateReferenceRenderingContext());
|
|
const nscoord minISize = wm.IsVertical() ? constraints.mMinSize.height
|
|
: constraints.mMinSize.width;
|
|
const nscoord maxISize = wm.IsVertical() ? aMaxHeight : aMaxWidth;
|
|
if (aPrefWidth) {
|
|
prefISize = std::max(root->GetMinISize(rcx.get()), aPrefWidth);
|
|
} else {
|
|
prefISize = root->GetPrefISize(rcx.get());
|
|
}
|
|
prefISize = nsPresContext::RoundUpAppUnitsToCSSPixel(
|
|
std::max(minISize, std::min(prefISize, maxISize)));
|
|
}
|
|
|
|
// We should never intentionally get here with this sentinel value, but it's
|
|
// possible that a document with huge sizes might inadvertently have a
|
|
// prefISize that exactly matches NS_UNCONSTRAINEDSIZE.
|
|
// Just bail if that happens.
|
|
NS_ENSURE_TRUE(prefISize != NS_UNCONSTRAINEDSIZE, NS_ERROR_FAILURE);
|
|
|
|
nscoord height = wm.IsVertical() ? prefISize : aMaxHeight;
|
|
nscoord width = wm.IsVertical() ? aMaxWidth : prefISize;
|
|
|
|
presShell->ResizeReflow(width, height, ResizeReflowOptions::BSizeLimit);
|
|
|
|
RefPtr<nsPresContext> presContext = GetPresContext();
|
|
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
|
|
|
|
// Protect against bogus returns here
|
|
nsRect shellArea = presContext->GetVisibleArea();
|
|
NS_ENSURE_TRUE(shellArea.width != NS_UNCONSTRAINEDSIZE &&
|
|
shellArea.height != NS_UNCONSTRAINEDSIZE,
|
|
NS_ERROR_FAILURE);
|
|
|
|
// Ceil instead of rounding here, so we can actually guarantee showing all the
|
|
// content.
|
|
*aWidth = std::ceil(CSSPixel::FromAppUnits(shellArea.width));
|
|
*aHeight = std::ceil(CSSPixel::FromAppUnits(shellArea.height));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsDocViewerSelectionListener, nsISelectionListener)
|
|
|
|
/*
|
|
* GetPopupNode, GetPopupLinkNode and GetPopupImageNode are helpers
|
|
* for the cmd_copyLink / cmd_copyImageLocation / cmd_copyImageContents family
|
|
* of commands. The focus controller stores the popup node, these retrieve
|
|
* them and munge appropriately. Note that we have to store the popup node
|
|
* rather than retrieving it from EventStateManager::GetFocusedContent because
|
|
* not all content (images included) can receive focus.
|
|
*/
|
|
|
|
already_AddRefed<nsINode> nsDocumentViewer::GetPopupNode() {
|
|
// get the document
|
|
Document* document = GetDocument();
|
|
NS_ENSURE_TRUE(document, nullptr);
|
|
|
|
// get the private dom window
|
|
nsCOMPtr<nsPIDOMWindowOuter> window(document->GetWindow());
|
|
NS_ENSURE_TRUE(window, nullptr);
|
|
if (window) {
|
|
nsCOMPtr<nsPIWindowRoot> root = window->GetTopWindowRoot();
|
|
NS_ENSURE_TRUE(root, nullptr);
|
|
|
|
// get the popup node
|
|
nsCOMPtr<nsINode> node = root->GetPopupNode();
|
|
if (!node) {
|
|
nsPIDOMWindowOuter* rootWindow = root->GetWindow();
|
|
if (rootWindow) {
|
|
nsCOMPtr<Document> rootDoc = rootWindow->GetExtantDoc();
|
|
if (rootDoc) {
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
node = pm->GetLastTriggerPopupNode(rootDoc);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return node.forget();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
// GetPopupLinkNode: return popup link node or fail
|
|
already_AddRefed<nsINode> nsDocumentViewer::GetPopupLinkNode() {
|
|
// find popup node
|
|
nsCOMPtr<nsINode> node = GetPopupNode();
|
|
|
|
// find out if we have a link in our ancestry
|
|
while (node) {
|
|
if (const auto* element = Element::FromNode(*node)) {
|
|
if (element->IsLink()) {
|
|
return node.forget();
|
|
}
|
|
}
|
|
|
|
// get our parent and keep trying...
|
|
node = node->GetParentNode();
|
|
}
|
|
|
|
// if we have no node, fail
|
|
return nullptr;
|
|
}
|
|
|
|
// GetPopupLinkNode: return popup image node or fail
|
|
already_AddRefed<nsIImageLoadingContent> nsDocumentViewer::GetPopupImageNode() {
|
|
// find popup node
|
|
nsCOMPtr<nsINode> node = GetPopupNode();
|
|
nsCOMPtr<nsIImageLoadingContent> img = do_QueryInterface(node);
|
|
return img.forget();
|
|
}
|
|
|
|
/*
|
|
* XXX dr
|
|
* ------
|
|
* These two functions -- GetInLink and GetInImage -- are kind of annoying
|
|
* in that they only get called from the controller (in
|
|
* nsDOMWindowController::IsCommandEnabled). The actual construction of the
|
|
* context menus in communicator (nsContextMenu.js) has its own, redundant
|
|
* tests. No big deal, but good to keep in mind if we ever clean context
|
|
* menus.
|
|
*/
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::GetInLink(bool* aInLink) {
|
|
#ifdef DEBUG_dr
|
|
printf("dr :: nsDocumentViewer::GetInLink\n");
|
|
#endif
|
|
|
|
NS_ENSURE_ARG_POINTER(aInLink);
|
|
|
|
// we're not in a link unless i say so
|
|
*aInLink = false;
|
|
|
|
// get the popup link
|
|
nsCOMPtr<nsINode> node = GetPopupLinkNode();
|
|
if (!node) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// if we made it here, we're in a link
|
|
*aInLink = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::GetInImage(bool* aInImage) {
|
|
#ifdef DEBUG_dr
|
|
printf("dr :: nsDocumentViewer::GetInImage\n");
|
|
#endif
|
|
|
|
NS_ENSURE_ARG_POINTER(aInImage);
|
|
|
|
// we're not in an image unless i say so
|
|
*aInImage = false;
|
|
|
|
// get the popup image
|
|
nsCOMPtr<nsIImageLoadingContent> node = GetPopupImageNode();
|
|
if (!node) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Make sure there is a URI assigned. This allows <input type="image"> to
|
|
// be an image but rejects other <input> types. This matches what
|
|
// nsContextMenu.js does.
|
|
nsCOMPtr<nsIURI> uri;
|
|
node->GetCurrentURI(getter_AddRefs(uri));
|
|
if (uri) {
|
|
// if we made it here, we're in an image
|
|
*aInImage = true;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocViewerSelectionListener::NotifySelectionChanged(
|
|
Document*, Selection*, int16_t aReason, int32_t aAmount) {
|
|
if (!mDocViewer) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// get the selection state
|
|
RefPtr<mozilla::dom::Selection> selection =
|
|
mDocViewer->GetDocumentSelection();
|
|
if (!selection) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
Document* theDoc = mDocViewer->GetDocument();
|
|
if (!theDoc) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> domWindow = theDoc->GetWindow();
|
|
if (!domWindow) return NS_ERROR_FAILURE;
|
|
|
|
bool selectionCollapsed = selection->IsCollapsed();
|
|
// We only call UpdateCommands when the selection changes from collapsed to
|
|
// non-collapsed or vice versa, however we skip the initializing collapse. We
|
|
// might need another update string for simple selection changes, but that
|
|
// would be expenseive.
|
|
if (mSelectionWasCollapsed != selectionCollapsed) {
|
|
domWindow->UpdateCommands(u"select"_ns);
|
|
mSelectionWasCollapsed = selectionCollapsed;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsDocViewerFocusListener
|
|
NS_IMPL_ISUPPORTS(nsDocViewerFocusListener, nsIDOMEventListener)
|
|
|
|
nsresult nsDocViewerFocusListener::HandleEvent(Event* aEvent) {
|
|
NS_ENSURE_STATE(mDocViewer);
|
|
|
|
RefPtr<PresShell> presShell = mDocViewer->GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
|
|
|
|
RefPtr<nsFrameSelection> selection =
|
|
presShell->GetLastFocusedFrameSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
|
|
auto selectionStatus = selection->GetDisplaySelection();
|
|
nsAutoString eventType;
|
|
aEvent->GetType(eventType);
|
|
if (eventType.EqualsLiteral("focus")) {
|
|
// If selection was disabled, re-enable it.
|
|
if (selectionStatus == nsISelectionController::SELECTION_DISABLED ||
|
|
selectionStatus == nsISelectionController::SELECTION_HIDDEN) {
|
|
selection->SetDisplaySelection(nsISelectionController::SELECTION_ON);
|
|
selection->RepaintSelection(SelectionType::eNormal);
|
|
}
|
|
// See EditorBase::FinalizeSelection. This fixes up the case where focus
|
|
// left the editor's selection but returned to something else.
|
|
if (selection != presShell->ConstFrameSelection()) {
|
|
RefPtr<Document> doc = presShell->GetDocument();
|
|
const bool selectionMatchesFocus =
|
|
selection->GetLimiter() &&
|
|
selection->GetLimiter()->GetChromeOnlyAccessSubtreeRootParent() ==
|
|
doc->GetUnretargetedFocusedContent();
|
|
if (NS_WARN_IF(!selectionMatchesFocus)) {
|
|
presShell->FrameSelectionWillLoseFocus(*selection);
|
|
presShell->SelectionWillTakeFocus();
|
|
}
|
|
}
|
|
} else {
|
|
MOZ_ASSERT(eventType.EqualsLiteral("blur"), "Unexpected event type");
|
|
// If selection was on, disable it.
|
|
if (selectionStatus == nsISelectionController::SELECTION_ON ||
|
|
selectionStatus == nsISelectionController::SELECTION_ATTENTION) {
|
|
selection->SetDisplaySelection(
|
|
nsISelectionController::SELECTION_DISABLED);
|
|
selection->RepaintSelection(SelectionType::eNormal);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/** ---------------------------------------------------
|
|
* From nsIWebBrowserPrint
|
|
*/
|
|
|
|
#ifdef NS_PRINTING
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::Print(nsIPrintSettings* aPrintSettings,
|
|
RemotePrintJobChild* aRemotePrintJob,
|
|
nsIWebProgressListener* aWebProgressListener) {
|
|
if (NS_WARN_IF(!mContainer)) {
|
|
PR_PL(("Container was destroyed yet we are still trying to use it!"));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (NS_WARN_IF(!mDocument) || NS_WARN_IF(!mDeviceContext)) {
|
|
PR_PL(("Can't Print without a document and a device context"));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (NS_WARN_IF(mPrintJob && mPrintJob->GetIsPrinting())) {
|
|
// If we are printing another URL, then exit.
|
|
// The reason we check here is because this method can be called while
|
|
// another is still in here (the printing dialog is a good example). the
|
|
// only time we can print more than one job at a time is the regression
|
|
// tests.
|
|
nsresult rv = NS_ERROR_NOT_AVAILABLE;
|
|
RefPtr<nsPrintJob>(mPrintJob)->FirePrintingErrorEvent(rv);
|
|
return rv;
|
|
}
|
|
|
|
OnDonePrinting();
|
|
|
|
// Note: mContainer and mDocument are known to be non-null via null-checks
|
|
// earlier in this function.
|
|
// TODO(dholbert) Do we need to bother with this stack-owned local RefPtr?
|
|
// (Is there an edge case where it's needed to keep the nsPrintJob alive?)
|
|
RefPtr<nsPrintJob> printJob =
|
|
new nsPrintJob(*this, *mContainer, *mDocument,
|
|
float(AppUnitsPerCSSInch()) /
|
|
float(mDeviceContext->AppUnitsPerDevPixel()));
|
|
mPrintJob = printJob;
|
|
|
|
nsresult rv = printJob->Print(*mDocument, aPrintSettings, aRemotePrintJob,
|
|
aWebProgressListener);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
OnDonePrinting();
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::PrintPreview(nsIPrintSettings* aPrintSettings,
|
|
nsIWebProgressListener* aWebProgressListener,
|
|
PrintPreviewResolver&& aCallback) {
|
|
# ifdef NS_PRINT_PREVIEW
|
|
RefPtr<Document> doc = mDocument.get();
|
|
NS_ENSURE_STATE(doc);
|
|
|
|
if (NS_WARN_IF(GetIsPrinting())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell(mContainer);
|
|
if (NS_WARN_IF(!docShell) || NS_WARN_IF(!mDeviceContext)) {
|
|
PR_PL(("Can't Print Preview without device context and docshell"));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
NS_ENSURE_STATE(!GetIsPrinting());
|
|
// beforeprint event may have caused ContentViewer to be shutdown.
|
|
NS_ENSURE_STATE(mContainer);
|
|
NS_ENSURE_STATE(mDeviceContext);
|
|
|
|
OnDonePrinting();
|
|
|
|
// Note: mContainer and doc are known to be non-null via null-checks earlier
|
|
// in this function.
|
|
// TODO(dholbert) Do we need to bother with this stack-owned local RefPtr?
|
|
// (Is there an edge case where it's needed to keep the nsPrintJob alive?)
|
|
RefPtr<nsPrintJob> printJob =
|
|
new nsPrintJob(*this, *mContainer, *doc,
|
|
float(AppUnitsPerCSSInch()) /
|
|
float(mDeviceContext->AppUnitsPerDevPixel()));
|
|
mPrintJob = printJob;
|
|
|
|
nsresult rv = printJob->PrintPreview(
|
|
*doc, aPrintSettings, aWebProgressListener, std::move(aCallback));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
OnDonePrinting();
|
|
}
|
|
return rv;
|
|
# else
|
|
return NS_ERROR_FAILURE;
|
|
# endif // NS_PRINT_PREVIEW
|
|
}
|
|
|
|
static const nsIFrame* GetTargetPageFrame(int32_t aTargetPageNum,
|
|
nsPageSequenceFrame* aSequenceFrame) {
|
|
MOZ_ASSERT(aTargetPageNum > 0 &&
|
|
aTargetPageNum <=
|
|
aSequenceFrame->PrincipalChildList().GetLength());
|
|
return aSequenceFrame->PrincipalChildList().FrameAt(aTargetPageNum - 1);
|
|
}
|
|
|
|
// Calculate the scroll position where the center of |aFrame| is positioned at
|
|
// the center of |aScrollable|'s scroll port for the print preview.
|
|
// So what we do for that is;
|
|
// 1) Calculate the position of the center of |aFrame| in the print preview
|
|
// coordinates.
|
|
// 2) Reduce the half height of the scroll port from the result of 1.
|
|
static nscoord ScrollPositionForFrame(const nsIFrame* aFrame,
|
|
nsIScrollableFrame* aScrollable,
|
|
float aPreviewScale) {
|
|
// Note that even if the computed scroll position is out of the range of
|
|
// the scroll port, it gets clamped in nsIScrollableFrame::ScrollTo.
|
|
return nscoord(aPreviewScale * aFrame->GetRect().Center().y -
|
|
float(aScrollable->GetScrollPortRect().height) / 2.0f);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::PrintPreviewScrollToPage(int16_t aType, int32_t aPageNum) {
|
|
if (!GetIsPrintPreview() || mPrintJob->GetIsCreatingPrintPreview())
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIScrollableFrame* sf = mPresShell->GetRootScrollFrameAsScrollable();
|
|
if (!sf) return NS_OK;
|
|
|
|
auto [seqFrame, sheetCount] = mPrintJob->GetSeqFrameAndCountSheets();
|
|
Unused << sheetCount;
|
|
if (!seqFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
float previewScale = seqFrame->GetPrintPreviewScale();
|
|
|
|
nsPoint dest = sf->GetScrollPosition();
|
|
|
|
switch (aType) {
|
|
case nsIWebBrowserPrint::PRINTPREVIEW_HOME:
|
|
dest.y = 0;
|
|
break;
|
|
case nsIWebBrowserPrint::PRINTPREVIEW_END:
|
|
dest.y = sf->GetScrollRange().YMost();
|
|
break;
|
|
case nsIWebBrowserPrint::PRINTPREVIEW_PREV_PAGE:
|
|
case nsIWebBrowserPrint::PRINTPREVIEW_NEXT_PAGE: {
|
|
auto [currentFrame, currentSheetNumber] = GetCurrentSheetFrameAndNumber();
|
|
Unused << currentSheetNumber;
|
|
if (!currentFrame) {
|
|
return NS_OK;
|
|
}
|
|
|
|
const nsIFrame* targetFrame = nullptr;
|
|
if (aType == nsIWebBrowserPrint::PRINTPREVIEW_PREV_PAGE) {
|
|
targetFrame = currentFrame->GetPrevInFlow();
|
|
} else {
|
|
targetFrame = currentFrame->GetNextInFlow();
|
|
}
|
|
if (!targetFrame) {
|
|
return NS_OK;
|
|
}
|
|
|
|
dest.y = ScrollPositionForFrame(targetFrame, sf, previewScale);
|
|
break;
|
|
}
|
|
case nsIWebBrowserPrint::PRINTPREVIEW_GOTO_PAGENUM: {
|
|
if (aPageNum <= 0 || aPageNum > sheetCount) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
const nsIFrame* targetFrame = GetTargetPageFrame(aPageNum, seqFrame);
|
|
MOZ_ASSERT(targetFrame);
|
|
|
|
dest.y = ScrollPositionForFrame(targetFrame, sf, previewScale);
|
|
break;
|
|
}
|
|
default:
|
|
return NS_ERROR_INVALID_ARG;
|
|
break;
|
|
}
|
|
|
|
sf->ScrollTo(dest, ScrollMode::Instant);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
std::tuple<const nsIFrame*, int32_t>
|
|
nsDocumentViewer::GetCurrentSheetFrameAndNumber() const {
|
|
MOZ_ASSERT(mPrintJob);
|
|
MOZ_ASSERT(GetIsPrintPreview() && !mPrintJob->GetIsCreatingPrintPreview());
|
|
|
|
// in PP mPrtPreview->mPrintObject->mSeqFrame is null
|
|
auto [seqFrame, sheetCount] = mPrintJob->GetSeqFrameAndCountSheets();
|
|
Unused << sheetCount;
|
|
if (!seqFrame) {
|
|
return {nullptr, 0};
|
|
}
|
|
|
|
nsIScrollableFrame* sf = mPresShell->GetRootScrollFrameAsScrollable();
|
|
if (!sf) {
|
|
// No scrollable contents, returns 1 even if there are multiple sheets.
|
|
return {seqFrame->PrincipalChildList().FirstChild(), 1};
|
|
}
|
|
|
|
nsPoint currentScrollPosition = sf->GetScrollPosition();
|
|
float halfwayPoint =
|
|
currentScrollPosition.y + float(sf->GetScrollPortRect().height) / 2.0f;
|
|
float lastDistanceFromHalfwayPoint = std::numeric_limits<float>::max();
|
|
int32_t sheetNumber = 0;
|
|
const nsIFrame* currentSheet = nullptr;
|
|
float previewScale = seqFrame->GetPrintPreviewScale();
|
|
for (const nsIFrame* sheetFrame : seqFrame->PrincipalChildList()) {
|
|
nsRect sheetRect = sheetFrame->GetRect();
|
|
sheetNumber++;
|
|
currentSheet = sheetFrame;
|
|
|
|
float bottomOfSheet = sheetRect.YMost() * previewScale;
|
|
if (bottomOfSheet < halfwayPoint) {
|
|
// If the bottom of the sheet is not yet over the halfway point, iterate
|
|
// the next frame to see if the next frame is over the halfway point and
|
|
// compare the distance from the halfway point.
|
|
lastDistanceFromHalfwayPoint = halfwayPoint - bottomOfSheet;
|
|
continue;
|
|
}
|
|
|
|
float topOfSheet = sheetRect.Y() * previewScale;
|
|
if (topOfSheet <= halfwayPoint) {
|
|
// If the top of the sheet is not yet over the halfway point or on the
|
|
// point, it's the current sheet.
|
|
break;
|
|
}
|
|
|
|
// Now the sheet rect is completely over the halfway point, compare the
|
|
// distances from the halfway point.
|
|
if ((topOfSheet - halfwayPoint) >= lastDistanceFromHalfwayPoint) {
|
|
// If the previous sheet distance is less than or equal to the current
|
|
// sheet distance, choose the previous one as the current.
|
|
sheetNumber--;
|
|
MOZ_ASSERT(sheetNumber > 0);
|
|
currentSheet = currentSheet->GetPrevInFlow();
|
|
MOZ_ASSERT(currentSheet);
|
|
}
|
|
break;
|
|
}
|
|
|
|
MOZ_ASSERT(sheetNumber <= sheetCount);
|
|
return {currentSheet, sheetNumber};
|
|
}
|
|
|
|
// XXXdholbert As noted in nsIWebBrowserPrint.idl, this API (the IDL attr
|
|
// 'printPreviewCurrentPageNumber') is misnamed and needs s/Page/Sheet/. See
|
|
// bug 1669762.
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetPrintPreviewCurrentPageNumber(int32_t* aNumber) {
|
|
NS_ENSURE_ARG_POINTER(aNumber);
|
|
NS_ENSURE_TRUE(mPrintJob, NS_ERROR_FAILURE);
|
|
if (!GetIsPrintPreview() || mPrintJob->GetIsCreatingPrintPreview()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
auto [currentFrame, currentSheetNumber] = GetCurrentSheetFrameAndNumber();
|
|
Unused << currentFrame;
|
|
if (!currentSheetNumber) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
*aNumber = currentSheetNumber;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX This always returns false for subdocuments
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetDoingPrint(bool* aDoingPrint) {
|
|
NS_ENSURE_ARG_POINTER(aDoingPrint);
|
|
|
|
// XXX shouldn't this be GetDoingPrint() ?
|
|
*aDoingPrint = mPrintJob ? mPrintJob->CreatedForPrintPreview() : false;
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX This always returns false for subdocuments
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetDoingPrintPreview(bool* aDoingPrintPreview) {
|
|
NS_ENSURE_ARG_POINTER(aDoingPrintPreview);
|
|
|
|
*aDoingPrintPreview = mPrintJob ? mPrintJob->CreatedForPrintPreview() : false;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::ExitPrintPreview() {
|
|
NS_ENSURE_TRUE(mPrintJob, NS_ERROR_FAILURE);
|
|
|
|
if (GetIsPrinting()) {
|
|
// Block exiting the print preview window if we're in the middle of an
|
|
// actual print.
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (!GetIsPrintPreview()) {
|
|
NS_ERROR("Wow, we should never get here!");
|
|
return NS_OK;
|
|
}
|
|
|
|
# ifdef NS_PRINT_PREVIEW
|
|
mPrintJob->Destroy();
|
|
mPrintJob = nullptr;
|
|
|
|
// Since the print preview implementation discards the window that was used
|
|
// to show the print preview, we skip certain cleanup that we would otherwise
|
|
// want to do. Specifically, we do not call `SetIsPrintPreview(false)` to
|
|
// unblock navigation, we do not call `SetOverrideDPPX` to reset the
|
|
// devicePixelRatio, and we do not call `Show` to make such changes take
|
|
// affect.
|
|
# endif // NS_PRINT_PREVIEW
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetRawNumPages(int32_t* aRawNumPages) {
|
|
NS_ENSURE_ARG_POINTER(aRawNumPages);
|
|
NS_ENSURE_TRUE(mPrintJob, NS_ERROR_FAILURE);
|
|
|
|
*aRawNumPages = mPrintJob->GetRawNumPages();
|
|
return *aRawNumPages > 0 ? NS_OK : NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// XXXdholbert As noted in nsIWebBrowserPrint.idl, this API (the IDL attr
|
|
// 'printPreviewNumPages') is misnamed and needs s/Page/Sheet/.
|
|
// See bug 1669762.
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetPrintPreviewNumPages(int32_t* aPrintPreviewNumPages) {
|
|
NS_ENSURE_ARG_POINTER(aPrintPreviewNumPages);
|
|
NS_ENSURE_TRUE(mPrintJob, NS_ERROR_FAILURE);
|
|
*aPrintPreviewNumPages = mPrintJob->GetPrintPreviewNumSheets();
|
|
return *aPrintPreviewNumPages > 0 ? NS_OK : NS_ERROR_FAILURE;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------------
|
|
// Printing/Print Preview Helpers
|
|
//----------------------------------------------------------------------------------
|
|
|
|
//----------------------------------------------------------------------------------
|
|
// Walks the document tree and tells each DocShell whether Printing/PP is
|
|
// happening
|
|
#endif // NS_PRINTING
|
|
|
|
bool nsDocumentViewer::ShouldAttachToTopLevel() {
|
|
if (!mParentWidget) {
|
|
return false;
|
|
}
|
|
|
|
// We always attach when using puppet widgets
|
|
if (nsIWidget::UsePuppetWidgets()) {
|
|
return true;
|
|
}
|
|
|
|
// FIXME(emilio): Can we unify this between macOS and aother platforms?
|
|
#ifdef XP_MACOSX
|
|
return false;
|
|
#else
|
|
# ifdef DEBUG
|
|
nsIWidgetListener* parentListener = mParentWidget->GetWidgetListener();
|
|
MOZ_ASSERT(!parentListener || !parentListener->GetView(),
|
|
"Expect a top level widget");
|
|
# endif
|
|
return true;
|
|
#endif
|
|
}
|
|
|
|
//------------------------------------------------------------
|
|
// XXX this always returns false for subdocuments
|
|
bool nsDocumentViewer::GetIsPrinting() const {
|
|
#ifdef NS_PRINTING
|
|
if (mPrintJob) {
|
|
return mPrintJob->GetIsPrinting();
|
|
}
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
//------------------------------------------------------------
|
|
// The PrintJob holds the current value
|
|
// this called from inside the DocViewer.
|
|
// XXX it always returns false for subdocuments
|
|
bool nsDocumentViewer::GetIsPrintPreview() const {
|
|
#ifdef NS_PRINTING
|
|
return mPrintJob && mPrintJob->CreatedForPrintPreview();
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
//------------------------------------------------------------
|
|
// Notification from the PrintJob of the current PP status
|
|
void nsDocumentViewer::SetIsPrintPreview(bool aIsPrintPreview) {
|
|
// Protect against pres shell destruction running scripts.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
if (!aIsPrintPreview) {
|
|
InvalidatePotentialSubDocDisplayItem();
|
|
if (mPresShell) {
|
|
DestroyPresShell();
|
|
}
|
|
mWindow = nullptr;
|
|
mViewManager = nullptr;
|
|
mPresContext = nullptr;
|
|
mPresShell = nullptr;
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------------------
|
|
// nsIDocumentViewerPrint IFace
|
|
//----------------------------------------------------------------------------------
|
|
|
|
//------------------------------------------------------------
|
|
void nsDocumentViewer::IncrementDestroyBlockedCount() {
|
|
++mDestroyBlockedCount;
|
|
}
|
|
|
|
void nsDocumentViewer::DecrementDestroyBlockedCount() {
|
|
--mDestroyBlockedCount;
|
|
}
|
|
|
|
//------------------------------------------------------------
|
|
// This called ONLY when printing has completed and the DV
|
|
// is being notified that it should get rid of the nsPrintJob.
|
|
//
|
|
// BUT, if we are in Print Preview then we want to ignore the
|
|
// notification (we do not get rid of the nsPrintJob)
|
|
//
|
|
// One small caveat:
|
|
// This IS called from two places in this module for cleaning
|
|
// up when an error occurred during the start up printing
|
|
// and print preview
|
|
//
|
|
void nsDocumentViewer::OnDonePrinting() {
|
|
#if defined(NS_PRINTING) && defined(NS_PRINT_PREVIEW)
|
|
// If Destroy() has been called during calling nsPrintJob::Print() or
|
|
// nsPrintJob::PrintPreview(), mPrintJob is already nullptr here.
|
|
// So, the following clean up does nothing in such case.
|
|
// (Do we need some of this for that case?)
|
|
if (mPrintJob) {
|
|
RefPtr<nsPrintJob> printJob = std::move(mPrintJob);
|
|
if (GetIsPrintPreview()) {
|
|
printJob->DestroyPrintingData();
|
|
} else {
|
|
printJob->Destroy();
|
|
}
|
|
|
|
// We are done printing, now clean up.
|
|
//
|
|
// For non-print-preview jobs, we are actually responsible for cleaning up
|
|
// our whole <browser> or window (see the OPEN_PRINT_BROWSER code), so gotta
|
|
// run window.close(), which will take care of this.
|
|
//
|
|
// For print preview jobs the front-end code is responsible for cleaning the
|
|
// UI.
|
|
if (!printJob->CreatedForPrintPreview()) {
|
|
if (mContainer) {
|
|
if (nsCOMPtr<nsPIDOMWindowOuter> win = mContainer->GetWindow()) {
|
|
win->Close();
|
|
}
|
|
}
|
|
} else if (mClosingWhilePrinting) {
|
|
if (mDocument) {
|
|
mDocument->Destroy();
|
|
mDocument = nullptr;
|
|
}
|
|
mClosingWhilePrinting = false;
|
|
}
|
|
}
|
|
#endif // NS_PRINTING && NS_PRINT_PREVIEW
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::SetPrintSettingsForSubdocument(
|
|
nsIPrintSettings* aPrintSettings, RemotePrintJobChild* aRemotePrintJob) {
|
|
#ifdef NS_PRINTING
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
if (mPresShell) {
|
|
DestroyPresShell();
|
|
}
|
|
|
|
if (mPresContext) {
|
|
DestroyPresContext();
|
|
}
|
|
|
|
MOZ_ASSERT(!mPresContext);
|
|
MOZ_ASSERT(!mPresShell);
|
|
|
|
if (MOZ_UNLIKELY(!mDocument)) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
RefPtr<nsDeviceContextSpecProxy> devspec =
|
|
new nsDeviceContextSpecProxy(aRemotePrintJob);
|
|
nsresult rv = devspec->Init(aPrintSettings, /* aIsPrintPreview = */ true);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mDeviceContext = new nsDeviceContext();
|
|
rv = mDeviceContext->InitForPrinting(devspec);
|
|
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mPresContext = CreatePresContext(
|
|
mDocument, nsPresContext::eContext_PrintPreview, FindContainerView());
|
|
mPresContext->SetPrintSettings(aPrintSettings);
|
|
rv = mPresContext->Init(mDeviceContext);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = MakeWindow(nsSize(mPresContext->DevPixelsToAppUnits(mBounds.width),
|
|
mPresContext->DevPixelsToAppUnits(mBounds.height)),
|
|
FindContainerView());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
MOZ_TRY(InitPresentationStuff(true));
|
|
}
|
|
|
|
RefPtr<PresShell> shell = mPresShell;
|
|
shell->FlushPendingNotifications(FlushType::Layout);
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsDocumentViewer::SetPageModeForTesting(
|
|
bool aPageMode, nsIPrintSettings* aPrintSettings) {
|
|
// XXX Page mode is only partially working; it's currently used for
|
|
// reftests that require a paginated context
|
|
mIsPageMode = aPageMode;
|
|
|
|
// The DestroyPresShell call requires a script blocker, since the
|
|
// PresShell::Destroy call it does can cause scripts to run, which could
|
|
// re-entrantly call methods on the nsDocumentViewer.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
if (mPresShell) {
|
|
DestroyPresShell();
|
|
}
|
|
|
|
if (mPresContext) {
|
|
DestroyPresContext();
|
|
}
|
|
|
|
mViewManager = nullptr;
|
|
mWindow = nullptr;
|
|
|
|
NS_ENSURE_STATE(mDocument);
|
|
if (aPageMode) {
|
|
mPresContext = CreatePresContext(
|
|
mDocument, nsPresContext::eContext_PageLayout, FindContainerView());
|
|
NS_ENSURE_TRUE(mPresContext, NS_ERROR_OUT_OF_MEMORY);
|
|
mPresContext->SetPaginatedScrolling(true);
|
|
mPresContext->SetPrintSettings(aPrintSettings);
|
|
nsresult rv = mPresContext->Init(mDeviceContext);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
NS_ENSURE_SUCCESS(InitInternal(mParentWidget, nullptr, nullptr, mBounds, true,
|
|
false, false),
|
|
NS_ERROR_FAILURE);
|
|
|
|
Show();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetHistoryEntry(nsISHEntry** aHistoryEntry) {
|
|
NS_IF_ADDREF(*aHistoryEntry = mSHEntry);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetIsTabModalPromptAllowed(bool* aAllowed) {
|
|
*aAllowed = !mHidden;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::GetIsHidden(bool* aHidden) {
|
|
*aHidden = mHidden;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDocumentViewer::SetIsHidden(bool aHidden) {
|
|
mHidden = aHidden;
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsDocumentViewer::DestroyPresShell() {
|
|
// We assert this because destroying the pres shell could otherwise cause
|
|
// re-entrancy into nsDocumentViewer methods, and all callers of
|
|
// DestroyPresShell need to do other cleanup work afterwards before it
|
|
// is safe for those re-entrant method calls to be made.
|
|
MOZ_ASSERT(!nsContentUtils::IsSafeToRunScript(),
|
|
"DestroyPresShell must only be called when scripts are blocked");
|
|
|
|
// Break circular reference (or something)
|
|
mPresShell->EndObservingDocument();
|
|
|
|
RefPtr<mozilla::dom::Selection> selection = GetDocumentSelection();
|
|
if (selection && mSelectionListener)
|
|
selection->RemoveSelectionListener(mSelectionListener);
|
|
|
|
mPresShell->Destroy();
|
|
mPresShell = nullptr;
|
|
}
|
|
|
|
void nsDocumentViewer::InvalidatePotentialSubDocDisplayItem() {
|
|
if (mViewManager) {
|
|
if (nsView* rootView = mViewManager->GetRootView()) {
|
|
if (nsView* rootViewParent = rootView->GetParent()) {
|
|
if (nsView* subdocview = rootViewParent->GetParent()) {
|
|
if (nsIFrame* f = subdocview->GetFrame()) {
|
|
if (nsSubDocumentFrame* s = do_QueryFrame(f)) {
|
|
s->MarkNeedsDisplayItemRebuild();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDocumentViewer::DestroyPresContext() {
|
|
InvalidatePotentialSubDocDisplayItem();
|
|
mPresContext = nullptr;
|
|
}
|
|
|
|
void nsDocumentViewer::SetPrintPreviewPresentation(nsViewManager* aViewManager,
|
|
nsPresContext* aPresContext,
|
|
PresShell* aPresShell) {
|
|
// Protect against pres shell destruction running scripts and re-entrantly
|
|
// creating a new presentation.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
if (mPresShell) {
|
|
DestroyPresShell();
|
|
}
|
|
|
|
mWindow = nullptr;
|
|
mViewManager = aViewManager;
|
|
mPresContext = aPresContext;
|
|
mPresShell = aPresShell;
|
|
|
|
if (ShouldAttachToTopLevel()) {
|
|
DetachFromTopLevelWidget();
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
rootView->AttachToTopLevelWidget(mParentWidget);
|
|
mAttachedToParent = true;
|
|
}
|
|
}
|
|
|
|
// Fires the "document-shown" event so that interested parties are aware of it.
|
|
NS_IMETHODIMP
|
|
nsDocumentShownDispatcher::Run() {
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->NotifyObservers(ToSupports(mDocument), "document-shown",
|
|
nullptr);
|
|
}
|
|
return NS_OK;
|
|
}
|