зеркало из https://github.com/mozilla/gecko-dev.git
264 строки
11 KiB
C++
264 строки
11 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsListControlFrame_h___
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#define nsListControlFrame_h___
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#include "nsScrollFrame.h"
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#include "nsIFormControlFrame.h"
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#include "nsIListControlFrame.h"
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#include "nsISelectControlFrame.h"
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#include "nsIDOMMouseListener.h"
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#include "nsIDOMMouseMotionListener.h"
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#include "nsIDOMKeyListener.h"
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#include "nsIStatefulFrame.h"
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#include "nsIPresState.h"
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class nsIDOMHTMLSelectElement;
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class nsIDOMHTMLCollection;
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class nsIDOMHTMLOptionElement;
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class nsIComboboxControlFrame;
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class nsIViewManager;
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class nsIPresContext;
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/**
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* Frame-based listbox.
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*/
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class nsListControlFrame : public nsScrollFrame,
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public nsIFormControlFrame,
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public nsIListControlFrame,
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public nsIDOMMouseListener,
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public nsIDOMMouseMotionListener,
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public nsIDOMKeyListener,
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public nsISelectControlFrame,
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public nsIStatefulFrame
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{
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public:
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friend nsresult NS_NewListControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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// nsISupports
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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// nsIFrame
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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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NS_IMETHOD SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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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 Init(nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsIStyleContext* aContext,
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nsIFrame* aPrevInFlow);
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NS_IMETHOD DidReflow(nsIPresContext* aPresContext, nsDidReflowStatus aStatus);
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NS_IMETHOD MoveTo(nsIPresContext* aPresContext, nscoord aX, nscoord aY);
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// nsIFormControlFrame
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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 SetProperty(nsIPresContext* aPresContext, nsIAtom* aName, const nsString& aValue);
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NS_IMETHOD GetProperty(nsIAtom* aName, nsString& aValue);
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NS_IMETHOD GetMultiple(PRBool* aResult, nsIDOMHTMLSelectElement* aSelect = nsnull);
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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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virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE);
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virtual void ScrollIntoView(nsIPresContext* aPresContext);
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virtual void MouseClicked(nsIPresContext* aPresContext);
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virtual void Reset(nsIPresContext* aPresContext);
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virtual PRBool IsSuccessful(nsIFormControlFrame* aSubmitter);
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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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virtual void SetFormFrame(nsFormFrame* aFrame);
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virtual nscoord GetVerticalInsidePadding(nsIPresContext* aPresContext,
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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 RequiresWidget(PRBool &aRequiresWidget);
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// nsHTMLContainerFrame
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virtual PRIntn GetSkipSides() const;
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// nsIListControlFrame
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NS_IMETHOD SetComboboxFrame(nsIFrame* aComboboxFrame);
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NS_IMETHOD GetSelectedIndex(PRInt32* aIndex);
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NS_IMETHOD GetSelectedItem(nsString & aStr);
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NS_IMETHOD CaptureMouseEvents(nsIPresContext* aPresContext, PRBool aGrabMouseEvents);
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NS_IMETHOD GetMaximumSize(nsSize &aSize);
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NS_IMETHOD SetSuggestedSize(nscoord aWidth, nscoord aHeight);
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NS_IMETHOD GetNumberOfOptions(PRInt32* aNumOptions);
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NS_IMETHOD SyncViewWithFrame(nsIPresContext* aPresContext);
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NS_IMETHOD AboutToDropDown();
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NS_IMETHOD AboutToRollup();
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NS_IMETHOD UpdateSelection(PRBool aDoDispatchEvent, PRBool aForceUpdate, nsIContent* aContent);
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NS_IMETHOD SetPresState(nsIPresState * aState) { mPresState = aState; return NS_OK;}
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// nsISelectControlFrame
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NS_IMETHOD AddOption(nsIPresContext* aPresContext, PRInt32 index);
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NS_IMETHOD RemoveOption(nsIPresContext* aPresContext, PRInt32 index);
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NS_IMETHOD SetOptionSelected(PRInt32 aIndex, PRBool aValue);
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NS_IMETHOD GetOptionSelected(PRInt32 aIndex, PRBool* aValue);
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NS_IMETHOD DoneAddingContent(PRBool aIsDone);
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//nsIStatefulFrame
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NS_IMETHOD GetStateType(nsIPresContext* aPresContext, nsIStatefulFrame::StateType* aStateType);
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NS_IMETHOD SaveState(nsIPresContext* aPresContext, nsIPresState** aState);
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NS_IMETHOD RestoreState(nsIPresContext* aPresContext, nsIPresState* aState);
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//nsIDOMEventListener
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virtual nsresult MouseDown(nsIDOMEvent* aMouseEvent);
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virtual nsresult MouseUp(nsIDOMEvent* aMouseEvent);
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virtual nsresult MouseClick(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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virtual nsresult MouseDblClick(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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virtual nsresult MouseOver(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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virtual nsresult MouseOut(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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virtual nsresult HandleEvent(nsIDOMEvent* aEvent) { return NS_OK; }
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//nsIDOMEventMotionListener
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virtual nsresult MouseMove(nsIDOMEvent* aMouseEvent);
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virtual nsresult DragMove(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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//nsIDOMKeyListener
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virtual nsresult KeyDown(nsIDOMEvent* aKeyEvent);
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virtual nsresult KeyUp(nsIDOMEvent* aKeyEvent) { return NS_OK; }
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virtual nsresult KeyPress(nsIDOMEvent* aKeyEvent);
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// Static Methods
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static nsIDOMHTMLSelectElement* GetSelect(nsIContent * aContent);
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static nsIDOMHTMLCollection* GetOptions(nsIContent * aContent, nsIDOMHTMLSelectElement* aSelect = nsnull);
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static nsIDOMHTMLOptionElement* GetOption(nsIDOMHTMLCollection& aOptions, PRInt32 aIndex);
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static nsIContent* GetOptionAsContent(nsIDOMHTMLCollection* aCollection,PRInt32 aIndex);
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static PRBool GetOptionValue(nsIDOMHTMLCollection& aCollecton, PRInt32 aIndex, nsString& aValue);
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protected:
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NS_IMETHOD GetSelectedIndexFromDOM(PRInt32* aIndex); // from DOM
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NS_IMETHOD IsTargetOptionDisabled(PRBool &aIsDisabled);
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nsresult ScrollToFrame(nsIContent * aOptElement);
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PRBool IsClickingInCombobox(nsIDOMEvent* aMouseEvent);
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nsListControlFrame();
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virtual ~nsListControlFrame();
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// nsScrollFrame overrides
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// Override the widget created for the list box so a Borderless top level widget is created
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// for drop-down lists.
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virtual nsresult CreateScrollingViewWidget(nsIView* aView,const nsStylePosition* aPosition);
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virtual nsresult GetScrollingParentView(nsIPresContext* aPresContext,
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nsIFrame* aParent,
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nsIView** aParentView);
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PRInt32 GetNumberOfOptions();
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// Utility methods
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nsresult GetSizeAttribute(PRInt32 *aSize);
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PRInt32 GetNumberOfSelections();
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nsIContent* GetOptionFromContent(nsIContent *aContent);
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nsresult GetIndexFromDOMEvent(nsIDOMEvent* aMouseEvent, PRInt32& aOldIndex, PRInt32& aCurIndex);
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PRInt32 GetSelectedIndexFromContent(nsIContent *aContent);
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nsIContent* GetOptionContent(PRInt32 aIndex);
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PRBool IsContentSelected(nsIContent* aContent);
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PRBool IsContentSelectedByIndex(PRInt32 aIndex);
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void SetContentSelected(PRInt32 aIndex, PRBool aSelected);
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void GetViewOffset(nsIViewManager* aManager, nsIView* aView, nsPoint& aPoint);
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nsresult Deselect();
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nsIFrame *GetOptionFromChild(nsIFrame* aParentFrame);
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PRBool IsAncestor(nsIView* aAncestor, nsIView* aChild);
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nsIView* GetViewFor(nsIWidget* aWidget);
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PRBool IsInDropDownMode();
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PRBool IsOptionElement(nsIContent* aContent);
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PRBool IsOptionElementFrame(nsIFrame *aFrame);
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nsIFrame *GetSelectableFrame(nsIFrame *aFrame);
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void DisplaySelected(nsIContent* aContent);
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void DisplayDeselected(nsIContent* aContent);
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void ForceRedraw(nsIPresContext* aPresContext);
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PRBool IsOptionGroup(nsIFrame* aFrame);
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void SingleSelection();
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void MultipleSelection(PRBool aIsShift, PRBool aIsControl);
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void SelectIndex(PRInt32 aIndex);
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void ToggleSelected(PRInt32 aIndex);
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void ClearSelection();
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void ExtendedSelection(PRInt32 aStartIndex, PRInt32 aEndIndex, PRBool aDoInvert, PRBool aSetValue);
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void ResetSelectedItem();
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PRBool CheckIfAllFramesHere();
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PRBool HasSameContent(nsIFrame* aFrame1, nsIFrame* aFrame2);
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void HandleListSelection(nsIDOMEvent * aDOMEvent);
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PRInt32 GetSelectedIndexFromFrame(nsIFrame *aHitFrame);
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PRBool IsLeftButton(nsIDOMEvent* aMouseEvent);
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// onChange detection
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nsresult InitSelectionCache(PRInt32 aLength);
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nsresult SelectionChanged(nsIContent* aContent);
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// Data Members
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nsFormFrame* mFormFrame;
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PRInt32 mSelectedIndex;
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PRInt32 mOldSelectedIndex;
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PRInt32 mSelectedIndexWhenPoppedDown;
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PRInt32 mStartExtendedIndex;
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PRInt32 mEndExtendedIndex;
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PRBool mIsInitializedFromContent;
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nsIComboboxControlFrame *mComboboxFrame;
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PRBool mButtonDown;
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nscoord mMaxWidth;
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nscoord mMaxHeight;
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PRBool mIsCapturingMouseEvents;
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PRBool* mSelectionCache;
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PRInt32 mSelectionCacheLength;
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PRBool mIsAllContentHere;
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PRBool mIsAllFramesHere;
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PRBool mHasBeenInitialized;
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nsIPresContext* mPresContext; // XXX: Remove the need to cache the pres context.
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nsCOMPtr<nsIPresState> mPresState; // Need cache state when list is null
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// XXX temprary only until full system mouse capture works
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PRBool mIsScrollbarVisible;
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//Resize Reflow OpitmizationSize;
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nsSize mCacheSize;
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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 /* nsListControlFrame_h___ */
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