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680815cd6e
This patch was generated automatically by the "modeline.py" script, available here: https://github.com/amccreight/moz-source-tools/blob/master/modeline.py For every file that is modified in this patch, the changes are as follows: (1) The patch changes the file to use the exact C++ mode lines from the Mozilla coding style guide, available here: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Mode_Line (2) The patch deletes any blank lines between the mode line & the MPL boilerplate comment. (3) If the file previously had the mode lines and MPL boilerplate in a single contiguous C++ comment, then the patch splits them into separate C++ comments, to match the boilerplate in the coding style. MozReview-Commit-ID: EuRsDue63tK --HG-- extra : rebase_source : 3356d4b80ff6213935192e87cdbc9103fec6084c
112 lines
3.7 KiB
C++
112 lines
3.7 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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//
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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 final : 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, kClassID)
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, mIncrement(0)
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, mSmoothScroll(false)
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, mScrollbarMediator(nullptr)
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{}
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(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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nsAtom* aAttribute,
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int32_t aModType) override;
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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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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) 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 GetXULMargin(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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