зеркало из https://github.com/mozilla/gecko-dev.git
287 строки
9.6 KiB
C++
287 строки
9.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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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 "nsIFormManager.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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class nsIView;
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class nsIPresContext;
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class nsStyleCoord;
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class nsFormFrame;
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#define CSS_NOTSET -1
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#define ATTR_NOTSET -1
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// Defining this causes some of the form elements to be rendered
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// using GFX calls, rather than creating a widget. Undefining it
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// causes widgets to be used for form elements. @see RequiresWidget method
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// to see which widgets will obey this directive.
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#undef NS_GFX_RENDER_FORM_ELEMENTS
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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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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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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 AttributeChanged(nsIPresContext* aPresContext,
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nsIContent* aChild,
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nsIAtom* aAttribute,
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PRInt32 aHint);
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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(nsString* aName);
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NS_IMETHOD GetValue(nsString* aName);
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virtual PRInt32 GetMaxNumValues();
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virtual PRBool GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
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nsString* aValues, nsString* aNames);
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/**
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* Get the widget associated with this frame
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* @param aView the view associated with the frame. It is a convience parm.
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* @param aWidget the address of address of where the widget will be placed.
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* This method doses an AddRef on the widget.
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*/
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nsresult GetWidget(nsIView* aView, nsIWidget** aWidget);
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nsresult GetWidget(nsIWidget** aWidget);
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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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* Perform opertations after the widget associated with this frame has been
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* created.
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*/
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virtual void PostCreateWidget(nsIPresContext* aPresContext,
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nscoord& aWidth, nscoord& aHeight);
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virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE);
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void SetColors(nsIPresContext& aPresContext);
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virtual void Reset();
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virtual PRBool IsSuccessful(nsIFormControlFrame* aSubmitter);
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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 nscoord GetVerticalBorderWidth(float aPixToTwip) const;
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virtual nscoord GetHorizontalBorderWidth(float aPixToTwip) const;
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virtual nscoord GetVerticalInsidePadding(float aPixToTwip,
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nscoord aInnerHeight) const;
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virtual nscoord GetHorizontalInsidePadding(nsIPresContext& aPresContext,
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float aPixToTwip,
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nscoord aInnerWidth,
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nscoord aCharWidth) const;
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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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nsFormFrame* GetFormFrame() { return mFormFrame; }
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virtual void SetFormFrame(nsFormFrame* aFormFrame) { mFormFrame = aFormFrame; }
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NS_IMETHOD GetFont(nsIPresContext* aPresContext,
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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(nsIAtom* aName, const nsString& aValue);
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NS_IMETHOD GetProperty(nsIAtom* aName, nsString& aValue);
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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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//
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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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nsMouseState mLastMouseState;
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nsIWidget* mWidget;
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nsSize mWidgetSize;
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PRBool mDidInit;
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nsPoint mLastClickPoint;
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nsFormFrame* mFormFrame;
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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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