pjs/layout/forms/nsListControlFrame.h

191 строка
7.7 KiB
C
Исходник Обычный вид История

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/* -*- 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 1.0 (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 Communicator client 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.
*/
#ifndef nsListControlFrame_h___
#define nsListControlFrame_h___
#include "nsScrollFrame.h"
#include "nsIFormControlFrame.h"
#include "nsIListControlFrame.h"
class nsIDOMHTMLSelectElement;
class nsIDOMHTMLCollection;
class nsIDOMHTMLOptionElement;
class nsIComboboxControlFrame;
class nsIViewManager;
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/**
* Frame-based listbox.
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*/
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class nsListControlFrame : public nsScrollFrame,
public nsIFormControlFrame,
public nsIListControlFrame
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{
public:
friend nsresult NS_NewListControlFrame(nsIFrame** aNewFrame);
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// nsISupports
NS_DECL_ISUPPORTS
// nsIFrame
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NS_IMETHOD GetFrameForPoint(const nsPoint& aPoint, nsIFrame** aFrame);
NS_IMETHOD HandleEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus);
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NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList);
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NS_IMETHOD Reflow(nsIPresContext& aCX,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD Init(nsIPresContext& aPresContext,
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nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* aContext,
nsIFrame* aPrevInFlow);
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NS_IMETHOD DidReflow(nsIPresContext& aPresContext, nsDidReflowStatus aStatus);
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// nsIFormControlFrame
NS_IMETHOD GetType(PRInt32* aType) const;
NS_IMETHOD GetName(nsString* aName);
NS_IMETHOD SetProperty(nsIAtom* aName, const nsString& aValue);
NS_IMETHOD GetProperty(nsIAtom* aName, nsString& aValue);
NS_IMETHOD GetMultiple(PRBool* aResult, nsIDOMHTMLSelectElement* aSelect = nsnull);
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NS_IMETHOD GetFont(nsIPresContext* aPresContext,
nsFont& aFont);
NS_IMETHOD GetFormContent(nsIContent*& aContent) const;
virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE);
virtual void MouseClicked(nsIPresContext* aPresContext);
virtual void Reset();
virtual PRBool IsSuccessful(nsIFormControlFrame* aSubmitter);
virtual PRInt32 GetMaxNumValues();
virtual PRBool GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
nsString* aValues, nsString* aNames);
virtual void SetFormFrame(nsFormFrame* aFrame);
virtual nscoord GetVerticalInsidePadding(float aPixToTwip,
nscoord aInnerHeight) const;
virtual nscoord GetHorizontalInsidePadding(nsIPresContext& aPresContext,
float aPixToTwip,
nscoord aInnerWidth,
nscoord aCharWidth) const;
virtual nsresult RequiresWidget(PRBool &aRequiresWidget);
// nsHTMLContainerFrame
virtual PRIntn GetSkipSides() const;
// nsIListControlFrame
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NS_IMETHOD SetComboboxFrame(nsIFrame* aComboboxFrame);
NS_IMETHOD GetSelectedItem(nsString & aStr);
NS_IMETHOD AboutToDropDown();
NS_IMETHOD CaptureMouseEvents(PRBool aGrabMouseEvents);
NS_IMETHOD GetMaximumSize(nsSize &aSize);
NS_IMETHOD SetSuggestedSize(nscoord aWidth, nscoord aHeight);
NS_IMETHOD GetNumberOfOptions(PRInt32* aNumOptions);
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// Static Methods
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static nsIDOMHTMLSelectElement* GetSelect(nsIContent * aContent);
static nsIDOMHTMLCollection* GetOptions(nsIContent * aContent, nsIDOMHTMLSelectElement* aSelect = nsnull);
static nsIDOMHTMLOptionElement* GetOption(nsIDOMHTMLCollection& aOptions, PRUint32 aIndex);
static nsIContent* GetOptionAsContent(nsIDOMHTMLCollection* aCollection,PRUint32 aIndex);
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static PRBool GetOptionValue(nsIDOMHTMLCollection& aCollecton, PRUint32 aIndex, nsString& aValue);
protected:
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nsListControlFrame();
virtual ~nsListControlFrame();
// nsScrollFrame overrides
// Override the widget created for the list box so a Borderless top level widget is created
// for drop-down lists.
virtual nsresult CreateScrollingViewWidget(nsIView* aView,const nsStylePosition* aPosition);
virtual nsresult GetScrollingParentView(nsIFrame* aParent, nsIView** aParentView);
PRInt32 GetNumberOfOptions();
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// Utility methods
nsresult GetSizeAttribute(PRInt32 *aSize);
PRInt32 GetNumberOfSelections();
nsIContent* GetOptionContent(PRUint32 aIndex);
PRBool IsContentSelected(nsIContent* aContent);
PRBool IsFrameSelected(PRUint32 aIndex);
void SetFrameSelected(PRUint32 aIndex, PRBool aSelected);
void GetViewOffset(nsIViewManager* aManager, nsIView* aView, nsPoint& aPoint);
nsresult Deselect();
nsIFrame *GetOptionFromChild(nsIFrame* aParentFrame);
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nsresult GetFrameForPointUsing(const nsPoint& aPoint,
nsIAtom* aList,
nsIFrame** aFrame);
PRBool IsAncestor(nsIView* aAncestor, nsIView* aChild);
nsIView* GetViewFor(nsIWidget* aWidget);
nsresult SyncViewWithFrame();
PRBool IsInDropDownMode();
PRBool IsOptionElement(nsIContent* aContent);
PRBool IsOptionElementFrame(nsIFrame *aFrame);
nsIFrame *GetSelectableFrame(nsIFrame *aFrame);
void DisplaySelected(nsIContent* aContent);
void DisplayDeselected(nsIContent* aContent);
void ForceRedraw();
PRBool IsOptionGroup(nsIFrame* aFrame);
void SingleSelection();
void MultipleSelection(PRBool aIsShift, PRBool aIsControl);
void SelectIndex(PRInt32 aIndex);
void ToggleSelected(PRInt32 aIndex);
void ClearSelection();
void InitializeFromContent();
void ExtendedSelection(PRInt32 aStartIndex, PRInt32 aEndIndex, PRBool aDoInvert, PRBool aSetValue);
nsresult HandleLikeDropDownListEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus);
PRBool HasSameContent(nsIFrame* aFrame1, nsIFrame* aFrame2);
void HandleListSelection(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus);
nsresult HandleLikeListEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus);
PRInt32 GetSelectedIndex(nsIFrame *aHitFrame);
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// Data Members
nscoord mBorderOffsetY;
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nsFormFrame* mFormFrame;
PRInt32 mSelectedIndex;
PRInt32 mStartExtendedIndex;
PRInt32 mEndExtendedIndex;
nsIFrame* mHitFrame;
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PRBool mIsInitializedFromContent;
nsIFrame* mContentFrame;
nsIComboboxControlFrame *mComboboxFrame;
PRBool mDisplayed;
PRBool mButtonDown;
nsIFrame* mLastFrame;
nscoord mMaxWidth;
nscoord mMaxHeight;
PRBool mIsCapturingMouseEvents;
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};
#endif /* nsListControlFrame_h___ */