gecko-dev/layout/forms/nsFormControlFrame.h

201 lines
7.4 KiB
C++

/* -*- 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
* of those above. If you wish to allow use of your version of this file only
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* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
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* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsFormControlFrame_h___
#define nsFormControlFrame_h___
#include "nsIFormControlFrame.h"
#include "nsLeafFrame.h"
#define CSS_NOTSET -1
#define ATTR_NOTSET -1
#ifdef DEBUG_rods
#define COMPARE_QUIRK_SIZE(__class, __navWidth, __navHeight) \
{ \
float t2p; \
t2p = aPresContext->TwipsToPixels(); \
printf ("%-25s::Size=%4d,%4d %3d,%3d Nav:%3d,%3d Diffs: %3d,%3d\n", \
(__class), \
aDesiredSize.width, aDesiredSize.height, \
NSToCoordRound(aDesiredSize.width * t2p), \
NSToCoordRound(aDesiredSize.height * t2p), \
(__navWidth), \
(__navHeight), \
NSToCoordRound(aDesiredSize.width * t2p) - (__navWidth), \
NSToCoordRound(aDesiredSize.height * t2p) - (__navHeight)); \
}
#else
#define COMPARE_QUIRK_SIZE(__class, __navWidth, __navHeight)
#endif
/**
* nsFormControlFrame is the base class for frames of form controls. It
* provides a uniform way of creating widgets, resizing, and painting.
* @see nsLeafFrame and its base classes for more info
*/
class nsFormControlFrame : public nsLeafFrame,
public nsIFormControlFrame
{
public:
/**
* Main constructor
* @param aContent the content representing this frame
* @param aParentFrame the parent frame
*/
nsFormControlFrame(nsStyleContext*);
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
/**
* Respond to a gui event
* @see nsIFrame::HandleEvent
*/
NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
NS_IMETHOD SetInitialChildList(nsIAtom* aListName,
nsIFrame* aChildList);
NS_IMETHOD DidReflow(nsPresContext* aPresContext,
const nsHTMLReflowState* aReflowState,
nsDidReflowStatus aStatus);
/**
* 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 Destroy();
// new behavior
virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE);
/**
* Get the width and height of this control based on CSS
* @param aPresContext the presentation context
* @param aSize the size that this frame wants, set by this method. values of -1
* for aSize.width or aSize.height indicate unset values.
*/
static void GetStyleSize(nsPresContext* aContext,
const nsHTMLReflowState& aReflowState,
nsSize& aSize);
// nsIFormControlFrame
virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue);
virtual nsresult GetFormProperty(nsIAtom* aName, nsAString& aValue) const;
// Resize Reflow Optimization Methods
static void SetupCachedSizes(nsSize& aCacheSize,
nscoord& aCachedAscent,
nscoord& aCachedMaxElementWidth,
nsHTMLReflowMetrics& aDesiredSize);
static void SkipResizeReflow(nsSize& aCacheSize,
nscoord& aCachedAscent,
nscoord& aCachedMaxElementWidth,
nsSize& aCachedAvailableSize,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus,
PRBool& aBailOnWidth,
PRBool& aBailOnHeight);
// AccessKey Helper function
static nsresult RegUnRegAccessKey(nsIFrame * aFrame, PRBool aDoReg);
/**
* Helper routine to that returns the height of the screen
*
*/
static nsresult GetScreenHeight(nsPresContext* aPresContext, nscoord& aHeight);
/**
* Helper method to get the absolute position of a frame
*
*/
static nsresult GetAbsoluteFramePosition(nsPresContext* aPresContext,
nsIFrame *aFrame,
nsRect& aAbsoluteTwipsRect,
nsRect& aAbsolutePixelRect);
protected:
virtual ~nsFormControlFrame();
/**
* Get the size that this frame would occupy without any constraints
* @param aPresContext the presentation context
* @param aDesiredSize the size desired by this frame, to be set by this method
* @param aMaxSize the maximum size available for this frame
*/
virtual void GetDesiredSize(nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize);
//
//-------------------------------------------------------------------------------------
// 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);
PRBool mDidInit;
private:
NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
};
#endif