gecko-dev/layout/forms/nsFormControlFrame.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* ***** END LICENSE BLOCK ***** */
#ifndef nsFormControlFrame_h___
#define nsFormControlFrame_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 PRBool IsFrameOfType(PRUint32 aFlags) const
{
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,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
virtual nscoord GetBaseline() const;
/**
* Respond to the request to resize and/or reflow
* @see nsIFrame::Reflow
*/
NS_IMETHOD Reflow(nsPresContext* aCX,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
virtual void DestroyFrom(nsIFrame* aDestructRoot);
// new behavior
virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE);
// nsIFormControlFrame
virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue);
virtual nsresult GetFormProperty(nsIAtom* aName, nsAString& aValue) const;
// AccessKey Helper function
static nsresult RegUnRegAccessKey(nsIFrame * aFrame, PRBool 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();
virtual nscoord GetIntrinsicHeight();
//
//-------------------------------------------------------------------------------------
// Utility methods for managing checkboxes and radiobuttons
//-------------------------------------------------------------------------------------
//
/**
* Get the state of the checked attribute.
* @param aState set to PR_TRUE if the checked attribute is set,
* PR_FALSE if the checked attribute has been removed
*/
void GetCurrentCheckState(PRBool* aState);
};
#endif