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33bb32f549
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-o -iname "*.h" \
-o -iname "*.c" \
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}
convert MOZ_OVERRIDE override
convert MOZ_FINAL final
111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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// nsScrollbarFrame
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//
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#ifndef nsScrollbarFrame_h__
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#define nsScrollbarFrame_h__
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#include "mozilla/Attributes.h"
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#include "nsBoxFrame.h"
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class nsIScrollbarMediator;
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nsIFrame* NS_NewScrollbarFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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class nsScrollbarFrame : public nsBoxFrame
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{
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public:
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explicit nsScrollbarFrame(nsStyleContext* aContext):
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nsBoxFrame(aContext), mScrollbarMediator(nullptr) {}
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NS_DECL_QUERYFRAME_TARGET(nsScrollbarFrame)
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override {
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return MakeFrameName(NS_LITERAL_STRING("ScrollbarFrame"), aResult);
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}
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#endif
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// nsIFrame overrides
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virtual nsresult AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType) override;
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS
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NS_IMETHOD HandlePress(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus,
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bool aControlHeld) override;
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NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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virtual void Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus) override;
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virtual nsIAtom* GetType() const override;
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void SetScrollbarMediatorContent(nsIContent* aMediator);
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nsIScrollbarMediator* GetScrollbarMediator();
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// nsBox methods
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/**
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* Treat scrollbars as clipping their children; overflowing children
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* will not be allowed to set an overflow rect on this
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* frame. This means that when the scroll code decides to hide a
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* scrollframe by setting its height or width to zero, that will
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* hide the children too.
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*/
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virtual bool DoesClipChildren() override { return true; }
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virtual nsresult GetMargin(nsMargin& aMargin) override;
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/**
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* The following three methods set the value of mIncrement when a
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* scrollbar button is pressed.
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*/
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void SetIncrementToLine(int32_t aDirection);
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void SetIncrementToPage(int32_t aDirection);
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void SetIncrementToWhole(int32_t aDirection);
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/**
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* MoveToNewPosition() adds mIncrement to the current position and
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* updates the curpos attribute.
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* @returns The new position after clamping, in CSS Pixels
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* @note This method might destroy the frame, pres shell, and other objects.
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*/
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int32_t MoveToNewPosition();
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int32_t GetIncrement() { return mIncrement; }
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protected:
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int32_t mIncrement; // Amount to scroll, in CSSPixels
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bool mSmoothScroll;
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private:
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nsCOMPtr<nsIContent> mScrollbarMediator;
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}; // class nsScrollbarFrame
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#endif
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