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91 lines
3.0 KiB
C++
91 lines
3.0 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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nsScrollbarFrame(nsIPresShell* aShell, nsStyleContext* aContext):
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nsBoxFrame(aShell, aContext), mScrollbarMediator(nullptr) {}
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NS_DECL_QUERYFRAME_TARGET(nsScrollbarFrame)
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#ifdef DEBUG_FRAME_DUMP
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NS_IMETHOD GetFrameName(nsAString& aResult) const MOZ_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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NS_IMETHOD AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType) MOZ_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) MOZ_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) MOZ_OVERRIDE;
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NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) MOZ_OVERRIDE;
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NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) MOZ_OVERRIDE;
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virtual void Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
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NS_IMETHOD Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus) MOZ_OVERRIDE;
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virtual nsIAtom* GetType() const MOZ_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() MOZ_OVERRIDE { return true; }
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NS_IMETHOD GetMargin(nsMargin& aMargin) MOZ_OVERRIDE;
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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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