зеркало из https://github.com/mozilla/gecko-dev.git
132 строки
4.2 KiB
C++
132 строки
4.2 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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#ifndef nsFormControlFrame_h___
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#define nsFormControlFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsIFormControlFrame.h"
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#include "nsAtomicContainerFrame.h"
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#include "nsDisplayList.h"
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typedef nsAtomicContainerFrame nsFormControlFrameSuper;
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/**
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* nsFormControlFrame is the base class for radio buttons and
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* checkboxes. It also has two static methods (RegUnRegAccessKey and
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* GetScreenHeight) that are used by other form controls.
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*/
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class nsFormControlFrame : public nsFormControlFrameSuper,
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public nsIFormControlFrame
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{
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public:
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/**
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* Main constructor
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* @param aContent the content representing this frame
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* @param aParentFrame the parent frame
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*/
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explicit nsFormControlFrame(nsStyleContext*);
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virtual nsIAtom* GetType() const override;
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virtual bool IsFrameOfType(uint32_t aFlags) const override
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{
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return nsFormControlFrameSuper::IsFrameOfType(aFlags &
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~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
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}
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NS_DECL_QUERYFRAME
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NS_DECL_ABSTRACT_FRAME(nsFormControlFrame)
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// nsIFrame replacements
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override {
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DO_GLOBAL_REFLOW_COUNT_DSP("nsFormControlFrame");
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DisplayBorderBackgroundOutline(aBuilder, aLists);
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}
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/**
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* Both GetMinISize and GetPrefISize will return whatever GetIntrinsicISize
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* returns.
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*/
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virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override;
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virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override;
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/**
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* Our auto size is just intrinsic width and intrinsic height.
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*/
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virtual mozilla::LogicalSize
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ComputeAutoSize(nsRenderingContext *aRenderingContext,
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mozilla::WritingMode aWritingMode,
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const mozilla::LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorder,
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const mozilla::LogicalSize& aPadding,
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bool aShrinkWrap) override;
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/**
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* Respond to a gui event
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* @see nsIFrame::HandleEvent
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*/
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virtual nsresult HandleEvent(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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virtual nscoord GetLogicalBaseline(mozilla::WritingMode aWritingMode)
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const override;
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/**
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* Respond to the request to resize and/or reflow
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* @see nsIFrame::Reflow
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*/
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virtual void Reflow(nsPresContext* aCX,
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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 void DestroyFrom(nsIFrame* aDestructRoot) override;
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// new behavior
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virtual void SetFocus(bool aOn = true, bool aRepaint = false) override;
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// nsIFormControlFrame
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virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue) override;
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// AccessKey Helper function
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static nsresult RegUnRegAccessKey(nsIFrame * aFrame, bool aDoReg);
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/**
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* Returns the usable screen rect in app units, eg the rect where we can
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* draw dropdowns.
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*/
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static nsRect GetUsableScreenRect(nsPresContext* aPresContext);
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protected:
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virtual ~nsFormControlFrame();
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nscoord GetIntrinsicISize();
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nscoord GetIntrinsicBSize();
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//
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//-------------------------------------------------------------------------------------
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// Utility methods for managing checkboxes and radiobuttons
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//-------------------------------------------------------------------------------------
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//
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/**
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* Get the state of the checked attribute.
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* @param aState set to true if the checked attribute is set,
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* false if the checked attribute has been removed
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*/
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void GetCurrentCheckState(bool* aState);
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};
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#endif
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