зеркало из https://github.com/mozilla/pjs.git
345 строки
12 KiB
C++
345 строки
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsFormControlFrame_h___
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#define nsFormControlFrame_h___
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#include "nsIFormControlFrame.h"
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#include "nsFormControlHelper.h"
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#include "nsISupports.h"
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#include "nsIWidget.h"
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#include "nsLeafFrame.h"
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#include "nsCoord.h"
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#include "nsIStyleContext.h"
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#include "nsIPresContext.h"
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#include "nsCOMPtr.h"
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class nsIView;
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class nsIPresContext;
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class nsStyleCoord;
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#define CSS_NOTSET -1
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#define ATTR_NOTSET -1
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#define NS_FORMSIZE_NOTSET -1
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#ifdef DEBUG_rods
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#define COMPARE_QUIRK_SIZE(__class, __navWidth, __navHeight) \
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{ \
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float t2p; \
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aPresContext->GetTwipsToPixels(&t2p); \
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printf ("%-25s::Size=%4d,%4d %3d,%3d Nav:%3d,%3d Diffs: %3d,%3d\n", \
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(__class), \
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aDesiredSize.width, aDesiredSize.height, \
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NSToCoordRound(aDesiredSize.width * t2p), \
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NSToCoordRound(aDesiredSize.height * t2p), \
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(__navWidth), \
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(__navHeight), \
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NSToCoordRound(aDesiredSize.width * t2p) - (__navWidth), \
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NSToCoordRound(aDesiredSize.height * t2p) - (__navHeight)); \
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}
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#else
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#define COMPARE_QUIRK_SIZE(__class, __navWidth, __navHeight)
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#endif
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/**
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* nsFormControlFrame is the base class for frames of form controls. It
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* provides a uniform way of creating widgets, resizing, and painting.
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* @see nsLeafFrame and its base classes for more info
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*/
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class nsFormControlFrame : public nsLeafFrame,
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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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nsFormControlFrame();
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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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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NS_IMETHOD HandleEvent(nsIPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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/**
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* Draw this frame within the context of a presentation context and rendering context
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* @see nsIFrame::Paint
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*/
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NS_IMETHOD Paint(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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PRUint32 aFlags = 0);
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NS_IMETHOD GetFrameForPoint(nsIPresContext* aPresContext,
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const nsPoint& aPoint,
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nsFramePaintLayer aWhichLayer,
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nsIFrame** aFrame);
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NS_IMETHOD SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD DidReflow(nsIPresContext* aPresContext,
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const nsHTMLReflowState* aReflowState,
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nsDidReflowStatus aStatus);
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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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NS_IMETHOD Reflow(nsIPresContext* aCX,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD Destroy(nsIPresContext *aPresContext);
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// new behavior
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/**
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* Get the class id of the widget associated with this frame
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* @return the class id
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*/
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virtual const nsIID& GetCID();
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/**
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* Get the interface id of widget associated with this frame
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* @return the interface id
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*/
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virtual const nsIID& GetIID();
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NS_IMETHOD GetType(PRInt32* aType) const;
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NS_IMETHOD GetName(nsAString* aName);
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NS_IMETHOD GetValue(nsAString* aName);
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/**
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* Respond to a enter key being pressed
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*/
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virtual void EnterPressed(nsIPresContext* aPresContext) {}
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/**
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* Respond to a mouse click (e.g. mouse enter, mouse down, mouse up)
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*/
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virtual void MouseClicked(nsIPresContext* aPresContext) {}
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/**
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* Respond to a control change (e.g. combo box close-up)
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*/
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virtual void ControlChanged(nsIPresContext* aPresContext) {}
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/**
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* Chance to Initialize to a defualt value
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*/
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virtual void InitializeControl(nsIPresContext* aPresContext);
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virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE);
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virtual void ScrollIntoView(nsIPresContext* aPresContext);
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/**
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* Perform opertations before the widget associated with this frame has been
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* created.
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*/
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virtual nsWidgetInitData* GetWidgetInitData(nsIPresContext* aPresContext);
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void GetWidgetSize(nsSize& aSize) const { aSize.width = mWidgetSize.width;
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aSize.height = mWidgetSize.height; }
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// XXX similar functionality needs to be added to widget library and these
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// need to change to use it.
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static nscoord GetScrollbarWidth(float aPixToTwip);
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virtual nsresult GetSizeFromContent(PRInt32* aSize) const;
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NS_IMETHOD GetMaxLength(PRInt32* aSize);
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virtual void SetClickPoint(nscoord aX, nscoord aY);
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NS_IMETHOD GetFont(nsIPresContext* aPresContext,
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const nsFont*& aFont);
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NS_IMETHOD GetFormContent(nsIContent*& aContent) const;
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/**
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* Get the width and height of this control based on CSS
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* @param aPresContext the presentation context
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* @param aSize the size that this frame wants, set by this method. values of -1
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* for aSize.width or aSize.height indicate unset values.
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*/
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static void GetStyleSize(nsIPresContext* aContext,
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const nsHTMLReflowState& aReflowState,
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nsSize& aSize);
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// nsIFormControlFrame
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NS_IMETHOD SetProperty(nsIPresContext* aPresContext, nsIAtom* aName, const nsAString& aValue);
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NS_IMETHOD GetProperty(nsIAtom* aName, nsAString& aValue);
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// Resize Reflow Optimiaztion Methods
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static void SetupCachedSizes(nsSize& aCacheSize,
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nscoord& aCachedAscent,
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nsSize& aCachedMaxElementSize,
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nsHTMLReflowMetrics& aDesiredSize);
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static void SkipResizeReflow(nsSize& aCacheSize,
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nscoord& aCachedAscent,
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nsSize& aCachedMaxElementSize,
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nsSize& aCachedAvailableSize,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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PRBool& aBailOnWidth,
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PRBool& aBailOnHeight);
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// AccessKey Helper function
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static nsresult RegUnRegAccessKey(nsIPresContext* aPresContext, nsIFrame * aFrame, PRBool aDoReg);
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/**
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* Helper routine to that returns the height of the screen
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*
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*/
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static nsresult GetScreenHeight(nsIPresContext* aPresContext, nscoord& aHeight);
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/**
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* Helper method to get the absolute position of a frame
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*
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*/
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static nsresult GetAbsoluteFramePosition(nsIPresContext* aPresContext,
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nsIFrame *aFrame,
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nsRect& aAbsoluteTwipsRect,
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nsRect& aAbsolutePixelRect);
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protected:
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virtual ~nsFormControlFrame();
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/**
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* Determine if the control uses a native widget for rendering
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* @param aRequiresWidget is set to PR_TRUE if it has a native widget, PR_FALSE otherwise.
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* @returns NS_OK
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*/
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virtual nsresult RequiresWidget(PRBool &aRequiresWidget);
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/**
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* Get the size that this frame would occupy without any constraints
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* @param aPresContext the presentation context
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* @param aDesiredSize the size desired by this frame, to be set by this method
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* @param aMaxSize the maximum size available for this frame
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*/
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virtual void GetDesiredSize(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredSize);
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virtual void GetDesiredSize(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredLayoutSize,
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nsSize& aDesiredWidgetSize);
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NS_IMETHOD SetSuggestedSize(nscoord aWidth, nscoord aHeight);
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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 PR_TRUE if the checked attribute is set,
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* PR_FALSE if the checked attribute has been removed
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* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
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*/
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nsresult GetCurrentCheckState(PRBool* aState);
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/**
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* Set the state of the checked attribute.
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* @param aState set to PR_TRUE to set the attribute,
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* PR_FALSE to unset the attribute
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* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
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*/
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nsresult SetCurrentCheckState(PRBool aState);
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/**
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* Get the state of the defaultchecked attribute.
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* @param aState set to PR_TRUE if the defaultchecked attribute is set,
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* PR_FALSE if the checked attribute has been removed
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* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
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*/
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nsresult GetDefaultCheckState(PRBool* aState);
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/**
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* Set the state of the checked attribute.
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* @param aState set to PR_TRUE to set the checked attribute
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* PR_FALSE to unset it
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* @returns NS_OK
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*/
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nsresult SetDefaultCheckState(PRBool aState);
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nsSize mWidgetSize;
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PRBool mDidInit;
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nsPoint mLastClickPoint;
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nscoord mSuggestedWidth;
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nscoord mSuggestedHeight;
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nsIPresContext * mPresContext;
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// Reflow Optimization
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nsSize mCacheSize;
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nscoord mCachedAscent;
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nsSize mCachedMaxElementSize;
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private:
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NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
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NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
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};
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#endif
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