gecko-dev/layout/forms/nsGfxCheckboxControlFrame.h

147 lines
5.5 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsGfxCheckboxControlFrame_h___
#define nsGfxCheckboxControlFrame_h___
#include "nsFormControlFrame.h"
#include "nsIStatefulFrame.h"
#include "nsICheckboxControlFrame.h"
#define NS_GFX_CHECKBOX_CONTROL_FRAME_FACE_CONTEXT_INDEX 0 // for additional style contexts
#define NS_GFX_CHECKBOX_CONTROL_FRAME_LAST_CONTEXT_INDEX 0
class nsGfxCheckboxControlFrame : public nsFormControlFrame,
public nsIStatefulFrame,
public nsICheckboxControlFrame
{
public:
nsGfxCheckboxControlFrame();
virtual ~nsGfxCheckboxControlFrame();
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsString& aResult) const {
return MakeFrameName("CheckboxControl", aResult);
}
#endif
// this should be protected, but VC6 is lame.
enum CheckState { eOff, eOn, eMixed } ;
NS_IMETHOD Init(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* aContext,
nsIFrame* aPrevInFlow) ;
NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aHint) ;
NS_IMETHOD Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer);
//nsIRadioControlFrame methods
NS_IMETHOD SetCheckboxFaceStyleContext(nsIStyleContext *aCheckboxFaceStyleContext);
void InitializeControl(nsIPresContext* aPresContext);
NS_IMETHOD GetAdditionalStyleContext(PRInt32 aIndex,
nsIStyleContext** aStyleContext) const;
NS_IMETHOD SetAdditionalStyleContext(PRInt32 aIndex,
nsIStyleContext* aStyleContext);
// nsIFormControlFrame
NS_IMETHOD SetProperty(nsIPresContext* aPresContext, nsIAtom* aName, const nsString& aValue);
NS_IMETHOD GetProperty(nsIAtom* aName, nsString& aValue);
virtual void Reset(nsIPresContext* aPresContext);
virtual PRInt32 GetMaxNumValues();
virtual PRBool GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
nsString* aValues, nsString* aNames);
// nsIStatefulFrame
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
NS_IMETHOD GetStateType(nsIPresContext* aPresContext, nsIStatefulFrame::StateType* aStateType);
NS_IMETHOD SaveState(nsIPresContext* aPresContext, nsIPresState** aState);
NS_IMETHOD RestoreState(nsIPresContext* aPresContext, nsIPresState* aState);
#ifdef DEBUG_rodsXXX
NS_IMETHOD Reflow(nsIPresContext* aCX,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
#endif
protected:
// native/gfx implementations need to implement needs.
CheckState GetCheckboxState();
void SetCheckboxState(nsIPresContext* aPresContext, CheckState aValue);
// Utility methods for implementing SetProperty/GetProperty
void SetCheckboxControlFrameState(nsIPresContext* aPresContext,
const nsString& aValue);
void GetCheckboxControlFrameState(nsString& aValue);
// utility routine for converting from DOM values to internal enum
void CheckStateToString ( CheckState inState, nsString& outStateAsString ) ;
CheckState StringToCheckState ( const nsString & aStateAsString ) ;
// figure out if we're a tri-state checkbox.
PRBool IsTristateCheckbox ( ) const { return mIsTristate; }
// we just became a tri-state, or we just lost tri-state status. fix up
// the attributes for the new mode.
void SwitchModesWithEmergencyBrake ( nsIPresContext* aPresContext,
PRBool inIsNowTristate ) ;
// for tri-state checkbox. meaningless for normal HTML
PRBool mIsTristate;
static nsIAtom* GetTristateAtom() ;
static nsIAtom* GetTristateValueAtom() ;
protected:
virtual void PaintCheckBox(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer);
virtual void PaintMixedMark(nsIRenderingContext& aRenderingContext,
float aPixelsToTwips, const nsRect& aRect) ;
//GFX-rendered state variables
CheckState mChecked;
nsIStyleContext* mCheckButtonFaceStyle;
private:
NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
};
#endif