gecko-dev/layout/forms/nsFormControlFrame.h
2013-10-02 12:46:03 +09:00

100 lines
3.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsFormControlFrame_h___
#define nsFormControlFrame_h___
#include "mozilla/Attributes.h"
#include "nsIFormControlFrame.h"
#include "nsLeafFrame.h"
/**
* nsFormControlFrame is the base class for radio buttons and
* checkboxes. It also has two static methods (RegUnRegAccessKey and
* GetScreenHeight) that are used by other form controls.
*/
class nsFormControlFrame : public nsLeafFrame,
public nsIFormControlFrame
{
public:
/**
* Main constructor
* @param aContent the content representing this frame
* @param aParentFrame the parent frame
*/
nsFormControlFrame(nsStyleContext*);
virtual nsIAtom* GetType() const MOZ_OVERRIDE;
virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
{
return nsLeafFrame::IsFrameOfType(aFlags &
~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
}
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS
/**
* Respond to a gui event
* @see nsIFrame::HandleEvent
*/
NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
mozilla::WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) MOZ_OVERRIDE;
virtual nscoord GetBaseline() const MOZ_OVERRIDE;
/**
* Respond to the request to resize and/or reflow
* @see nsIFrame::Reflow
*/
NS_IMETHOD Reflow(nsPresContext* aCX,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus) MOZ_OVERRIDE;
virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
// new behavior
virtual void SetFocus(bool aOn = true, bool aRepaint = false) MOZ_OVERRIDE;
// nsIFormControlFrame
virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue) MOZ_OVERRIDE;
// AccessKey Helper function
static nsresult RegUnRegAccessKey(nsIFrame * aFrame, bool aDoReg);
/**
* Returns the usable screen rect in app units, eg the rect where we can
* draw dropdowns.
*/
static nsRect GetUsableScreenRect(nsPresContext* aPresContext);
protected:
virtual ~nsFormControlFrame();
virtual nscoord GetIntrinsicWidth() MOZ_OVERRIDE;
virtual nscoord GetIntrinsicHeight() MOZ_OVERRIDE;
//
//-------------------------------------------------------------------------------------
// Utility methods for managing checkboxes and radiobuttons
//-------------------------------------------------------------------------------------
//
/**
* Get the state of the checked attribute.
* @param aState set to true if the checked attribute is set,
* false if the checked attribute has been removed
*/
void GetCurrentCheckState(bool* aState);
};
#endif