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798 lines
30 KiB
C++
798 lines
30 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set ts=2 sw=2 et tw=78:
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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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*
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* This Original Code has been modified by IBM Corporation.
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* Modifications made by IBM described herein are
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* Copyright (c) International Business Machines
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* Corporation, 2000
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*
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* Modifications to Mozilla code or documentation
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* identified per MPL Section 3.3
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*
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* Date Modified by Description of modification
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* 05/03/2000 IBM Corp. Observer events for reflow states
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*/
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/* a presentation of a document, part 2 */
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#ifndef nsPresShell_h_
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#define nsPresShell_h_
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#include "nsIPresShell.h"
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#include "nsStubDocumentObserver.h"
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#include "nsISelectionController.h"
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#include "nsIObserver.h"
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#include "nsWeakReference.h"
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#include "nsCRT.h"
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#include "nsAutoPtr.h"
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#include "nsIWidget.h"
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#include "nsStyleSet.h"
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#include "nsPresArena.h"
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#include "nsFrameSelection.h"
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#include "nsGUIEvent.h"
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#include "nsContentUtils.h"
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#include "nsRefreshDriver.h"
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#include "mozilla/Attributes.h"
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class nsRange;
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class nsIDragService;
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class nsCSSStyleSheet;
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struct RangePaintInfo;
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struct nsCallbackEventRequest;
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#ifdef MOZ_REFLOW_PERF
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class ReflowCountMgr;
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#endif
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class nsPresShellEventCB;
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class nsAutoCauseReflowNotifier;
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// 250ms. This is actually pref-controlled, but we use this value if we fail
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// to get the pref for any reason.
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#define PAINTLOCK_EVENT_DELAY 250
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class PresShell : public nsIPresShell,
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public nsStubDocumentObserver,
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public nsISelectionController, public nsIObserver,
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public nsSupportsWeakReference
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{
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public:
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PresShell();
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIPresShell
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virtual NS_HIDDEN_(nsresult) Init(nsIDocument* aDocument,
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nsPresContext* aPresContext,
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nsViewManager* aViewManager,
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nsStyleSet* aStyleSet,
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nsCompatibility aCompatMode);
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virtual NS_HIDDEN_(void) Destroy();
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virtual NS_HIDDEN_(nsresult) SetPreferenceStyleRules(bool aForceReflow);
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NS_IMETHOD GetSelection(SelectionType aType, nsISelection** aSelection);
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virtual mozilla::Selection* GetCurrentSelection(SelectionType aType);
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NS_IMETHOD SetDisplaySelection(int16_t aToggle);
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NS_IMETHOD GetDisplaySelection(int16_t *aToggle);
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NS_IMETHOD ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion,
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int16_t aFlags);
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NS_IMETHOD RepaintSelection(SelectionType aType);
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virtual NS_HIDDEN_(void) BeginObservingDocument();
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virtual NS_HIDDEN_(void) EndObservingDocument();
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virtual NS_HIDDEN_(nsresult) Initialize(nscoord aWidth, nscoord aHeight);
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virtual NS_HIDDEN_(nsresult) ResizeReflow(nscoord aWidth, nscoord aHeight);
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virtual NS_HIDDEN_(nsresult) ResizeReflowOverride(nscoord aWidth, nscoord aHeight);
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virtual NS_HIDDEN_(void) StyleChangeReflow();
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virtual NS_HIDDEN_(nsIPageSequenceFrame*) GetPageSequenceFrame() const;
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virtual NS_HIDDEN_(nsIFrame*) GetRealPrimaryFrameFor(nsIContent* aContent) const;
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virtual NS_HIDDEN_(nsIFrame*) GetPlaceholderFrameFor(nsIFrame* aFrame) const;
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virtual NS_HIDDEN_(void) FrameNeedsReflow(nsIFrame *aFrame, IntrinsicDirty aIntrinsicDirty,
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nsFrameState aBitToAdd);
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virtual NS_HIDDEN_(void) FrameNeedsToContinueReflow(nsIFrame *aFrame);
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virtual NS_HIDDEN_(void) CancelAllPendingReflows();
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virtual NS_HIDDEN_(bool) IsSafeToFlush() const;
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virtual NS_HIDDEN_(void) FlushPendingNotifications(mozFlushType aType);
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virtual NS_HIDDEN_(void) FlushPendingNotifications(mozilla::ChangesToFlush aType);
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/**
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* Recreates the frames for a node
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*/
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virtual NS_HIDDEN_(nsresult) RecreateFramesFor(nsIContent* aContent);
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/**
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* Post a callback that should be handled after reflow has finished.
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*/
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virtual NS_HIDDEN_(nsresult) PostReflowCallback(nsIReflowCallback* aCallback);
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virtual NS_HIDDEN_(void) CancelReflowCallback(nsIReflowCallback* aCallback);
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virtual NS_HIDDEN_(void) ClearFrameRefs(nsIFrame* aFrame);
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virtual NS_HIDDEN_(already_AddRefed<nsRenderingContext>) GetReferenceRenderingContext();
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virtual NS_HIDDEN_(nsresult) GoToAnchor(const nsAString& aAnchorName, bool aScroll);
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virtual NS_HIDDEN_(nsresult) ScrollToAnchor();
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virtual NS_HIDDEN_(nsresult) ScrollContentIntoView(nsIContent* aContent,
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ScrollAxis aVertical,
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ScrollAxis aHorizontal,
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uint32_t aFlags);
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virtual bool ScrollFrameRectIntoView(nsIFrame* aFrame,
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const nsRect& aRect,
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ScrollAxis aVertical,
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ScrollAxis aHorizontal,
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uint32_t aFlags);
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virtual nsRectVisibility GetRectVisibility(nsIFrame *aFrame,
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const nsRect &aRect,
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nscoord aMinTwips) const;
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virtual NS_HIDDEN_(void) SetIgnoreFrameDestruction(bool aIgnore);
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virtual NS_HIDDEN_(void) NotifyDestroyingFrame(nsIFrame* aFrame);
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virtual NS_HIDDEN_(nsresult) CaptureHistoryState(nsILayoutHistoryState** aLayoutHistoryState);
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virtual NS_HIDDEN_(void) UnsuppressPainting();
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virtual nsresult GetAgentStyleSheets(nsCOMArray<nsIStyleSheet>& aSheets);
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virtual nsresult SetAgentStyleSheets(const nsCOMArray<nsIStyleSheet>& aSheets);
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virtual nsresult AddOverrideStyleSheet(nsIStyleSheet *aSheet);
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virtual nsresult RemoveOverrideStyleSheet(nsIStyleSheet *aSheet);
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virtual NS_HIDDEN_(nsresult) HandleEventWithTarget(nsEvent* aEvent, nsIFrame* aFrame,
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nsIContent* aContent,
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nsEventStatus* aStatus);
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virtual NS_HIDDEN_(nsIFrame*) GetEventTargetFrame();
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virtual NS_HIDDEN_(already_AddRefed<nsIContent>) GetEventTargetContent(nsEvent* aEvent);
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virtual nsresult ReconstructFrames(void);
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virtual void Freeze();
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virtual void Thaw();
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virtual void FireOrClearDelayedEvents(bool aFireEvents);
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virtual NS_HIDDEN_(nsresult) RenderDocument(const nsRect& aRect, uint32_t aFlags,
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nscolor aBackgroundColor,
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gfxContext* aThebesContext);
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virtual already_AddRefed<gfxASurface> RenderNode(nsIDOMNode* aNode,
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nsIntRegion* aRegion,
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nsIntPoint& aPoint,
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nsIntRect* aScreenRect);
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virtual already_AddRefed<gfxASurface> RenderSelection(nsISelection* aSelection,
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nsIntPoint& aPoint,
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nsIntRect* aScreenRect);
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virtual already_AddRefed<nsPIDOMWindow> GetRootWindow();
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virtual LayerManager* GetLayerManager();
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virtual void SetIgnoreViewportScrolling(bool aIgnore);
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virtual void SetDisplayPort(const nsRect& aDisplayPort);
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virtual nsresult SetResolution(float aXResolution, float aYResolution);
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//nsIViewObserver interface
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virtual void Paint(nsView* aViewToPaint, const nsRegion& aDirtyRegion,
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uint32_t aFlags);
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virtual nsresult HandleEvent(nsIFrame* aFrame,
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nsGUIEvent* aEvent,
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bool aDontRetargetEvents,
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nsEventStatus* aEventStatus);
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virtual NS_HIDDEN_(nsresult) HandleDOMEventWithTarget(nsIContent* aTargetContent,
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nsEvent* aEvent,
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nsEventStatus* aStatus);
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virtual NS_HIDDEN_(nsresult) HandleDOMEventWithTarget(nsIContent* aTargetContent,
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nsIDOMEvent* aEvent,
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nsEventStatus* aStatus);
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virtual bool ShouldIgnoreInvalidation();
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virtual void WillPaint(bool aWillSendDidPaint);
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virtual void WillPaintWindow(bool aWillSendDidPaint);
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virtual void DidPaintWindow();
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virtual void ScheduleViewManagerFlush();
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virtual void DispatchSynthMouseMove(nsGUIEvent *aEvent, bool aFlushOnHoverChange);
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virtual void ClearMouseCaptureOnView(nsView* aView);
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virtual bool IsVisible();
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// caret handling
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virtual NS_HIDDEN_(already_AddRefed<nsCaret>) GetCaret() const;
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virtual NS_HIDDEN_(void) MaybeInvalidateCaretPosition();
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NS_IMETHOD SetCaretEnabled(bool aInEnable);
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NS_IMETHOD SetCaretReadOnly(bool aReadOnly);
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NS_IMETHOD GetCaretEnabled(bool *aOutEnabled);
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NS_IMETHOD SetCaretVisibilityDuringSelection(bool aVisibility);
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NS_IMETHOD GetCaretVisible(bool *_retval);
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virtual void SetCaret(nsCaret *aNewCaret);
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virtual void RestoreCaret();
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NS_IMETHOD SetSelectionFlags(int16_t aInEnable);
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NS_IMETHOD GetSelectionFlags(int16_t *aOutEnable);
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// nsISelectionController
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NS_IMETHOD CharacterMove(bool aForward, bool aExtend);
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NS_IMETHOD CharacterExtendForDelete();
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NS_IMETHOD CharacterExtendForBackspace();
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NS_IMETHOD WordMove(bool aForward, bool aExtend);
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NS_IMETHOD WordExtendForDelete(bool aForward);
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NS_IMETHOD LineMove(bool aForward, bool aExtend);
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NS_IMETHOD IntraLineMove(bool aForward, bool aExtend);
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NS_IMETHOD PageMove(bool aForward, bool aExtend);
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NS_IMETHOD ScrollPage(bool aForward);
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NS_IMETHOD ScrollLine(bool aForward);
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NS_IMETHOD ScrollCharacter(bool aRight);
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NS_IMETHOD CompleteScroll(bool aForward);
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NS_IMETHOD CompleteMove(bool aForward, bool aExtend);
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NS_IMETHOD SelectAll();
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NS_IMETHOD CheckVisibility(nsIDOMNode *node, int16_t startOffset, int16_t EndOffset, bool *_retval);
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virtual nsresult CheckVisibilityContent(nsIContent* aNode, int16_t aStartOffset,
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int16_t aEndOffset, bool* aRetval);
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// nsIDocumentObserver
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NS_DECL_NSIDOCUMENTOBSERVER_BEGINUPDATE
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NS_DECL_NSIDOCUMENTOBSERVER_ENDUPDATE
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NS_DECL_NSIDOCUMENTOBSERVER_BEGINLOAD
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NS_DECL_NSIDOCUMENTOBSERVER_ENDLOAD
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NS_DECL_NSIDOCUMENTOBSERVER_CONTENTSTATECHANGED
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NS_DECL_NSIDOCUMENTOBSERVER_DOCUMENTSTATESCHANGED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETADDED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETREMOVED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETAPPLICABLESTATECHANGED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLERULECHANGED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLERULEADDED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLERULEREMOVED
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// nsIMutationObserver
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NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTEWILLCHANGE
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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_NSIOBSERVER
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#ifdef MOZ_REFLOW_PERF
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virtual NS_HIDDEN_(void) DumpReflows();
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virtual NS_HIDDEN_(void) CountReflows(const char * aName, nsIFrame * aFrame);
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virtual NS_HIDDEN_(void) PaintCount(const char * aName,
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nsRenderingContext* aRenderingContext,
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nsPresContext* aPresContext,
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nsIFrame * aFrame,
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const nsPoint& aOffset,
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uint32_t aColor);
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virtual NS_HIDDEN_(void) SetPaintFrameCount(bool aOn);
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virtual bool IsPaintingFrameCounts();
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#endif
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#ifdef DEBUG
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virtual void ListStyleContexts(nsIFrame *aRootFrame, FILE *out,
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int32_t aIndent = 0);
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virtual void ListStyleSheets(FILE *out, int32_t aIndent = 0);
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virtual void VerifyStyleTree();
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#endif
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#ifdef PR_LOGGING
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static PRLogModuleInfo* gLog;
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#endif
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virtual NS_HIDDEN_(void) DisableNonTestMouseEvents(bool aDisable);
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virtual void UpdateCanvasBackground();
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virtual nsresult AddCanvasBackgroundColorItem(nsDisplayListBuilder& aBuilder,
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nsDisplayList& aList,
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nsIFrame* aFrame,
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const nsRect& aBounds,
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nscolor aBackstopColor,
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uint32_t aFlags);
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virtual nsresult AddPrintPreviewBackgroundItem(nsDisplayListBuilder& aBuilder,
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nsDisplayList& aList,
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nsIFrame* aFrame,
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const nsRect& aBounds);
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virtual nscolor ComputeBackstopColor(nsView* aDisplayRoot);
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virtual NS_HIDDEN_(nsresult) SetIsActive(bool aIsActive);
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virtual bool GetIsViewportOverridden() { return mViewportOverridden; }
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virtual bool IsLayoutFlushObserver()
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{
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return GetPresContext()->RefreshDriver()->
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IsLayoutFlushObserver(this);
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}
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void SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf,
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nsArenaMemoryStats *aArenaObjectsSize,
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size_t *aPresShellSize,
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size_t *aStyleSetsSize,
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size_t *aTextRunsSize,
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size_t *aPresContextSize);
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size_t SizeOfTextRuns(nsMallocSizeOfFun aMallocSizeOf) const;
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virtual void AddInvalidateHiddenPresShellObserver(nsRefreshDriver *aDriver);
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// This data is stored as a content property (nsGkAtoms::scrolling) on
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// mContentToScrollTo when we have a pending ScrollIntoView.
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struct ScrollIntoViewData {
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ScrollAxis mContentScrollVAxis;
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ScrollAxis mContentScrollHAxis;
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uint32_t mContentToScrollToFlags;
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};
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protected:
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virtual ~PresShell();
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void HandlePostedReflowCallbacks(bool aInterruptible);
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void CancelPostedReflowCallbacks();
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void UnsuppressAndInvalidate();
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void WillCauseReflow() {
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nsContentUtils::AddScriptBlocker();
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++mChangeNestCount;
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}
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nsresult DidCauseReflow();
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friend class nsAutoCauseReflowNotifier;
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bool TouchesAreEqual(nsIDOMTouch *aTouch1, nsIDOMTouch *aTouch2);
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void DispatchTouchEvent(nsEvent *aEvent,
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nsEventStatus* aStatus,
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nsPresShellEventCB* aEventCB,
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bool aTouchIsNew);
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void WillDoReflow();
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void DidDoReflow(bool aInterruptible);
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// ProcessReflowCommands returns whether we processed all our dirty roots
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// without interruptions.
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bool ProcessReflowCommands(bool aInterruptible);
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// MaybeScheduleReflow checks if posting a reflow is needed, then checks if
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// the last reflow was interrupted. In the interrupted case ScheduleReflow is
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// called off a timer, otherwise it is called directly.
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void MaybeScheduleReflow();
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// Actually schedules a reflow. This should only be called by
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// MaybeScheduleReflow and the reflow timer ScheduleReflowOffTimer
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// sets up.
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void ScheduleReflow();
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// Reflow regardless of whether the override bit has been set.
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nsresult ResizeReflowIgnoreOverride(nscoord aWidth, nscoord aHeight);
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// DoReflow returns whether the reflow finished without interruption
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bool DoReflow(nsIFrame* aFrame, bool aInterruptible);
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#ifdef DEBUG
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void DoVerifyReflow();
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void VerifyHasDirtyRootAncestor(nsIFrame* aFrame);
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#endif
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// Helper for ScrollContentIntoView
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void DoScrollContentIntoView();
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/**
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* Initialize cached font inflation preference values.
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*
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* @see nsLayoutUtils::sFontSizeInflationEmPerLine
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* @see nsLayoutUtils::sFontSizeInflationMinTwips
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* @see nsLayoutUtils::sFontSizeInflationLineThreshold
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*/
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void SetupFontInflation();
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friend struct AutoRenderingStateSaveRestore;
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friend struct RenderingState;
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struct RenderingState {
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RenderingState(PresShell* aPresShell)
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: mXResolution(aPresShell->mXResolution)
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, mYResolution(aPresShell->mYResolution)
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, mRenderFlags(aPresShell->mRenderFlags)
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{ }
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float mXResolution;
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float mYResolution;
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RenderFlags mRenderFlags;
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};
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struct AutoSaveRestoreRenderingState {
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AutoSaveRestoreRenderingState(PresShell* aPresShell)
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: mPresShell(aPresShell)
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, mOldState(aPresShell)
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{}
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~AutoSaveRestoreRenderingState()
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{
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mPresShell->mRenderFlags = mOldState.mRenderFlags;
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mPresShell->mXResolution = mOldState.mXResolution;
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mPresShell->mYResolution = mOldState.mYResolution;
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}
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PresShell* mPresShell;
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RenderingState mOldState;
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};
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static RenderFlags ChangeFlag(RenderFlags aFlags, bool aOnOff,
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eRenderFlag aFlag)
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{
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return aOnOff ? (aFlags | aFlag) : (aFlag & ~aFlag);
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}
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void SetRenderingState(const RenderingState& aState);
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friend class nsPresShellEventCB;
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bool mCaretEnabled;
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#ifdef DEBUG
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nsStyleSet* CloneStyleSet(nsStyleSet* aSet);
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bool VerifyIncrementalReflow();
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bool mInVerifyReflow;
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void ShowEventTargetDebug();
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#endif
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void RecordStyleSheetChange(nsIStyleSheet* aStyleSheet);
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/**
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* methods that manage rules that are used to implement the associated preferences
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* - initially created for bugs 31816, 20760, 22963
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*/
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nsresult ClearPreferenceStyleRules(void);
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nsresult CreatePreferenceStyleSheet(void);
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nsresult SetPrefLinkRules(void);
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nsresult SetPrefFocusRules(void);
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nsresult SetPrefNoScriptRule();
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nsresult SetPrefNoFramesRule(void);
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// methods for painting a range to an offscreen buffer
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// given a display list, clip the items within the list to
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// the range
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nsRect ClipListToRange(nsDisplayListBuilder *aBuilder,
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nsDisplayList* aList,
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nsRange* aRange);
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// create a RangePaintInfo for the range aRange containing the
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// display list needed to paint the range to a surface
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RangePaintInfo* CreateRangePaintInfo(nsIDOMRange* aRange,
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nsRect& aSurfaceRect,
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bool aForPrimarySelection);
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/*
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* Paint the items to a new surface and return it.
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*
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* aSelection - selection being painted, if any
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* aRegion - clip region, if any
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* aArea - area that the surface occupies, relative to the root frame
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|
* aPoint - reference point, typically the mouse position
|
|
* aScreenRect - [out] set to the area of the screen the painted area should
|
|
* be displayed at
|
|
*/
|
|
already_AddRefed<gfxASurface>
|
|
PaintRangePaintInfo(nsTArray<nsAutoPtr<RangePaintInfo> >* aItems,
|
|
nsISelection* aSelection,
|
|
nsIntRegion* aRegion,
|
|
nsRect aArea,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect);
|
|
|
|
/**
|
|
* Methods to handle changes to user and UA sheet lists that we get
|
|
* notified about.
|
|
*/
|
|
void AddUserSheet(nsISupports* aSheet);
|
|
void AddAgentSheet(nsISupports* aSheet);
|
|
void AddAuthorSheet(nsISupports* aSheet);
|
|
void RemoveSheet(nsStyleSet::sheetType aType, nsISupports* aSheet);
|
|
|
|
// Hide a view if it is a popup
|
|
void HideViewIfPopup(nsView* aView);
|
|
|
|
// Utility method to restore the root scrollframe state
|
|
void RestoreRootScrollPosition();
|
|
|
|
void MaybeReleaseCapturingContent()
|
|
{
|
|
nsRefPtr<nsFrameSelection> frameSelection = FrameSelection();
|
|
if (frameSelection) {
|
|
frameSelection->SetMouseDownState(false);
|
|
}
|
|
if (gCaptureInfo.mContent &&
|
|
gCaptureInfo.mContent->OwnerDoc() == mDocument) {
|
|
SetCapturingContent(nullptr, 0);
|
|
}
|
|
}
|
|
|
|
nsresult HandleRetargetedEvent(nsEvent* aEvent, nsEventStatus* aStatus, nsIContent* aTarget)
|
|
{
|
|
PushCurrentEventInfo(nullptr, nullptr);
|
|
mCurrentEventContent = aTarget;
|
|
nsresult rv = NS_OK;
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aStatus);
|
|
}
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
class nsDelayedEvent
|
|
{
|
|
public:
|
|
virtual ~nsDelayedEvent() {};
|
|
virtual void Dispatch(PresShell* aShell) {}
|
|
};
|
|
|
|
class nsDelayedInputEvent : public nsDelayedEvent
|
|
{
|
|
public:
|
|
virtual void Dispatch(PresShell* aShell)
|
|
{
|
|
if (mEvent && mEvent->widget) {
|
|
nsCOMPtr<nsIWidget> w = mEvent->widget;
|
|
nsEventStatus status;
|
|
w->DispatchEvent(mEvent, status);
|
|
}
|
|
}
|
|
|
|
protected:
|
|
void Init(nsInputEvent* aEvent)
|
|
{
|
|
mEvent->time = aEvent->time;
|
|
mEvent->refPoint = aEvent->refPoint;
|
|
mEvent->modifiers = aEvent->modifiers;
|
|
}
|
|
|
|
nsDelayedInputEvent()
|
|
: nsDelayedEvent(), mEvent(nullptr) {}
|
|
|
|
nsInputEvent* mEvent;
|
|
};
|
|
|
|
class nsDelayedMouseEvent : public nsDelayedInputEvent
|
|
{
|
|
public:
|
|
nsDelayedMouseEvent(nsMouseEvent* aEvent) : nsDelayedInputEvent()
|
|
{
|
|
mEvent = new nsMouseEvent(aEvent->mFlags.mIsTrusted,
|
|
aEvent->message,
|
|
aEvent->widget,
|
|
aEvent->reason,
|
|
aEvent->context);
|
|
Init(aEvent);
|
|
static_cast<nsMouseEvent*>(mEvent)->clickCount = aEvent->clickCount;
|
|
}
|
|
|
|
virtual ~nsDelayedMouseEvent()
|
|
{
|
|
delete static_cast<nsMouseEvent*>(mEvent);
|
|
}
|
|
};
|
|
|
|
class nsDelayedKeyEvent : public nsDelayedInputEvent
|
|
{
|
|
public:
|
|
nsDelayedKeyEvent(nsKeyEvent* aEvent) : nsDelayedInputEvent()
|
|
{
|
|
mEvent = new nsKeyEvent(aEvent->mFlags.mIsTrusted,
|
|
aEvent->message,
|
|
aEvent->widget);
|
|
Init(aEvent);
|
|
static_cast<nsKeyEvent*>(mEvent)->keyCode = aEvent->keyCode;
|
|
static_cast<nsKeyEvent*>(mEvent)->charCode = aEvent->charCode;
|
|
static_cast<nsKeyEvent*>(mEvent)->alternativeCharCodes =
|
|
aEvent->alternativeCharCodes;
|
|
static_cast<nsKeyEvent*>(mEvent)->isChar = aEvent->isChar;
|
|
}
|
|
|
|
virtual ~nsDelayedKeyEvent()
|
|
{
|
|
delete static_cast<nsKeyEvent*>(mEvent);
|
|
}
|
|
};
|
|
|
|
// Check if aEvent is a mouse event and record the mouse location for later
|
|
// synth mouse moves.
|
|
void RecordMouseLocation(nsGUIEvent* aEvent);
|
|
class nsSynthMouseMoveEvent MOZ_FINAL : public nsARefreshObserver {
|
|
public:
|
|
nsSynthMouseMoveEvent(PresShell* aPresShell, bool aFromScroll)
|
|
: mPresShell(aPresShell), mFromScroll(aFromScroll) {
|
|
NS_ASSERTION(mPresShell, "null parameter");
|
|
}
|
|
~nsSynthMouseMoveEvent() {
|
|
Revoke();
|
|
}
|
|
|
|
NS_INLINE_DECL_REFCOUNTING(nsSynthMouseMoveEvent)
|
|
|
|
void Revoke() {
|
|
if (mPresShell) {
|
|
mPresShell->GetPresContext()->RefreshDriver()->
|
|
RemoveRefreshObserver(this, Flush_Display);
|
|
mPresShell = nullptr;
|
|
}
|
|
}
|
|
virtual void WillRefresh(mozilla::TimeStamp aTime) MOZ_OVERRIDE {
|
|
if (mPresShell)
|
|
mPresShell->ProcessSynthMouseMoveEvent(mFromScroll);
|
|
}
|
|
private:
|
|
PresShell* mPresShell;
|
|
bool mFromScroll;
|
|
};
|
|
void ProcessSynthMouseMoveEvent(bool aFromScroll);
|
|
|
|
void QueryIsActive();
|
|
nsresult UpdateImageLockingState();
|
|
|
|
#ifdef ANDROID
|
|
nsIDocument* GetTouchEventTargetDocument();
|
|
#endif
|
|
bool InZombieDocument(nsIContent *aContent);
|
|
already_AddRefed<nsIPresShell> GetParentPresShell();
|
|
nsIFrame* GetCurrentEventFrame();
|
|
nsresult RetargetEventToParent(nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus);
|
|
void PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent);
|
|
void PopCurrentEventInfo();
|
|
nsresult HandleEventInternal(nsEvent* aEvent, nsEventStatus *aStatus);
|
|
nsresult HandlePositionedEvent(nsIFrame* aTargetFrame,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus);
|
|
// This returns the focused DOM window under our top level window.
|
|
// I.e., when we are deactive, this returns the *last* focused DOM window.
|
|
already_AddRefed<nsPIDOMWindow> GetFocusedDOMWindowInOurWindow();
|
|
|
|
/*
|
|
* This and the next two helper methods are used to target and position the
|
|
* context menu when the keyboard shortcut is used to open it.
|
|
*
|
|
* If another menu is open, the context menu is opened relative to the
|
|
* active menuitem within the menu, or the menu itself if no item is active.
|
|
* Otherwise, if the caret is visible, the menu is opened near the caret.
|
|
* Otherwise, if a selectable list such as a listbox is focused, the
|
|
* current item within the menu is opened relative to this item.
|
|
* Otherwise, the context menu is opened at the topleft corner of the
|
|
* view.
|
|
*
|
|
* Returns true if the context menu event should fire and false if it should
|
|
* not.
|
|
*/
|
|
bool AdjustContextMenuKeyEvent(nsMouseEvent* aEvent);
|
|
|
|
//
|
|
bool PrepareToUseCaretPosition(nsIWidget* aEventWidget, nsIntPoint& aTargetPt);
|
|
|
|
// Get the selected item and coordinates in device pixels relative to root
|
|
// document's root view for element, first ensuring the element is onscreen
|
|
void GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
|
|
nsIContent **aTargetToUse,
|
|
nsIntPoint& aTargetPt,
|
|
nsIWidget *aRootWidget);
|
|
|
|
void FireResizeEvent();
|
|
void FireBeforeResizeEvent();
|
|
static void AsyncResizeEventCallback(nsITimer* aTimer, void* aPresShell);
|
|
|
|
virtual void SynthesizeMouseMove(bool aFromScroll);
|
|
|
|
PresShell* GetRootPresShell();
|
|
|
|
nscolor GetDefaultBackgroundColorToDraw();
|
|
|
|
// The callback for the mPaintSuppressionTimer timer.
|
|
static void sPaintSuppressionCallback(nsITimer* aTimer, void* aPresShell);
|
|
|
|
// The callback for the mReflowContinueTimer timer.
|
|
static void sReflowContinueCallback(nsITimer* aTimer, void* aPresShell);
|
|
bool ScheduleReflowOffTimer();
|
|
|
|
// Widget notificiations
|
|
virtual void WindowSizeMoveDone();
|
|
virtual void SysColorChanged() { mPresContext->SysColorChanged(); }
|
|
virtual void ThemeChanged() { mPresContext->ThemeChanged(); }
|
|
virtual void BackingScaleFactorChanged() { mPresContext->UIResolutionChanged(); }
|
|
|
|
#ifdef DEBUG
|
|
// The reflow root under which we're currently reflowing. Null when
|
|
// not in reflow.
|
|
nsIFrame* mCurrentReflowRoot;
|
|
uint32_t mUpdateCount;
|
|
#endif
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
ReflowCountMgr* mReflowCountMgr;
|
|
#endif
|
|
|
|
// This is used for synthetic mouse events that are sent when what is under
|
|
// the mouse pointer may have changed without the mouse moving (eg scrolling,
|
|
// change to the document contents).
|
|
// It is set only on a presshell for a root document, this value represents
|
|
// the last observed location of the mouse relative to that root document. It
|
|
// is set to (NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE) if the mouse isn't
|
|
// over our window or there is no last observed mouse location for some
|
|
// reason.
|
|
nsPoint mMouseLocation;
|
|
|
|
// mStyleSet owns it but we maintain a ref, may be null
|
|
nsRefPtr<nsCSSStyleSheet> mPrefStyleSheet;
|
|
|
|
// Set of frames that we should mark with NS_FRAME_HAS_DIRTY_CHILDREN after
|
|
// we finish reflowing mCurrentReflowRoot.
|
|
nsTHashtable<nsPtrHashKey<nsIFrame> > mFramesToDirty;
|
|
|
|
// Reflow roots that need to be reflowed.
|
|
nsTArray<nsIFrame*> mDirtyRoots;
|
|
|
|
nsTArray<nsAutoPtr<nsDelayedEvent> > mDelayedEvents;
|
|
nsRevocableEventPtr<nsRunnableMethod<PresShell> > mResizeEvent;
|
|
nsCOMPtr<nsITimer> mAsyncResizeEventTimer;
|
|
nsIFrame* mCurrentEventFrame;
|
|
nsCOMPtr<nsIContent> mCurrentEventContent;
|
|
nsTArray<nsIFrame*> mCurrentEventFrameStack;
|
|
nsCOMArray<nsIContent> mCurrentEventContentStack;
|
|
nsRevocableEventPtr<nsSynthMouseMoveEvent> mSynthMouseMoveEvent;
|
|
nsCOMPtr<nsIContent> mLastAnchorScrolledTo;
|
|
nsRefPtr<nsCaret> mCaret;
|
|
nsRefPtr<nsCaret> mOriginalCaret;
|
|
nsCallbackEventRequest* mFirstCallbackEventRequest;
|
|
nsCallbackEventRequest* mLastCallbackEventRequest;
|
|
|
|
// This timer controls painting suppression. Until it fires
|
|
// or all frames are constructed, we won't paint anything but
|
|
// our <body> background and scrollbars.
|
|
nsCOMPtr<nsITimer> mPaintSuppressionTimer;
|
|
|
|
// At least on Win32 and Mac after interupting a reflow we need to post
|
|
// the resume reflow event off a timer to avoid event starvation because
|
|
// posted messages are processed before other messages when the modal
|
|
// moving/sizing loop is running, see bug 491700 for details.
|
|
nsCOMPtr<nsITimer> mReflowContinueTimer;
|
|
|
|
// Information needed to properly handle scrolling content into view if the
|
|
// pre-scroll reflow flush can be interrupted. mContentToScrollTo is
|
|
// non-null between the initial scroll attempt and the first time we finish
|
|
// processing all our dirty roots. mContentToScrollTo has a content property
|
|
// storing the details for the scroll operation, see ScrollIntoViewData above.
|
|
nsCOMPtr<nsIContent> mContentToScrollTo;
|
|
|
|
nscoord mLastAnchorScrollPositionY;
|
|
|
|
// This is used to protect ourselves from triggering reflow while in the
|
|
// middle of frame construction and the like... it really shouldn't be
|
|
// needed, one hopes, but it is for now.
|
|
uint16_t mChangeNestCount;
|
|
|
|
bool mDocumentLoading : 1;
|
|
bool mIgnoreFrameDestruction : 1;
|
|
bool mHaveShutDown : 1;
|
|
bool mViewportOverridden : 1;
|
|
bool mLastRootReflowHadUnconstrainedHeight : 1;
|
|
bool mNoDelayedMouseEvents : 1;
|
|
bool mNoDelayedKeyEvents : 1;
|
|
|
|
// We've been disconnected from the document. We will refuse to paint the
|
|
// document until either our timer fires or all frames are constructed.
|
|
bool mIsDocumentGone : 1;
|
|
|
|
// Indicates that it is safe to unlock painting once all pending reflows
|
|
// have been processed.
|
|
bool mShouldUnsuppressPainting : 1;
|
|
|
|
bool mAsyncResizeTimerIsActive : 1;
|
|
bool mInResize : 1;
|
|
|
|
static bool sDisableNonTestMouseEvents;
|
|
};
|
|
|
|
#endif /* !defined(nsPresShell_h_) */
|