зеркало из https://github.com/mozilla/pjs.git
447 строки
16 KiB
C++
447 строки
16 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 Communicator client 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 nsListControlFrame_h___
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#define nsListControlFrame_h___
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#ifdef DEBUG_evaughan
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//#define DEBUG_rods
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#endif
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#ifdef DEBUG_rods
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//#define DO_REFLOW_DEBUG
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//#define DO_REFLOW_COUNTER
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//#define DO_UNCONSTRAINED_CHECK
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//#define DO_PIXELS
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#endif
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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 "nsIPresState.h"
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#include "nsCWeakReference.h"
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#include "nsIContent.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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class nsVoidArray;
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class nsIScrollableView;
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class nsListControlFrame;
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class nsSelectUpdateTimer;
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class nsVoidArray;
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#define NS_ILIST_EVENT_LISTENER_IID \
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{/* 45BC6821-6EFB-11d4-B1EE-000064657374*/ \
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0x45bc6821, 0x6efb, 0x11d4, \
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{0xb1, 0xee, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
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/******************************************************************************
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* nsIListEventListener
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* Standard interface for event listeners that are attached to nsListControls
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******************************************************************************/
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class nsIListEventListener : public nsISupports
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{
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_ILIST_EVENT_LISTENER_IID)
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/** SetFrame sets the frame we send event messages to, when necessary
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* @param aFrame -- the frame, can be null, not ref counted (guaranteed to outlive us!)
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*/
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NS_IMETHOD SetFrame(nsListControlFrame *aFrame)=0;
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};
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/******************************************************************************
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* nsListEventListener
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* This class is responsible for propagating events to the nsListControlFrame
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* becuase it isn't ref-counted
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******************************************************************************/
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class nsListEventListener; // forward declaration for factory
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/* factory for ender key listener */
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nsresult NS_NewListEventListener(nsIListEventListener ** aInstancePtrResult);
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class nsListEventListener : public nsIListEventListener,
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public nsIDOMKeyListener,
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public nsIDOMMouseListener,
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public nsIDOMMouseMotionListener
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{
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public:
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/** the default destructor */
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virtual ~nsListEventListener();
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/** interfaces for addref and release and queryinterface*/
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NS_DECL_ISUPPORTS
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/** nsIDOMKeyListener interfaces
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* @see nsIDOMKeyListener
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*/
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NS_IMETHOD SetFrame(nsListControlFrame *aFrame);
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/** nsIDOMKeyListener interfaces
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* @see nsIDOMKeyListener
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*/
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NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent);
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NS_IMETHOD KeyDown(nsIDOMEvent* aKeyEvent);
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NS_IMETHOD KeyUp(nsIDOMEvent* aKeyEvent);
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NS_IMETHOD KeyPress(nsIDOMEvent* aKeyEvent);
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/* END interfaces from nsIDOMKeyListener*/
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/** nsIDOMMouseListener interfaces
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* @see nsIDOMMouseListener
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*/
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NS_IMETHOD MouseDown(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD MouseUp(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD MouseClick(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD MouseDblClick(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD MouseOver(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD MouseOut(nsIDOMEvent* aMouseEvent);
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/* END interfaces from nsIDOMMouseListener*/
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//nsIDOMEventMotionListener
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/** nsIDOMEventMotionListener interfaces
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* @see nsIDOMEventMotionListener
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*/
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NS_IMETHOD MouseMove(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD DragMove(nsIDOMEvent* aMouseEvent);
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/* END interfaces from nsIDOMMouseListener*/
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friend nsresult NS_NewListEventListener(nsIListEventListener ** aInstancePtrResult);
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protected:
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/** the default constructor. Protected, use the factory to create an instance.
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* @see NS_NewEnderEventListener
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*/
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nsListEventListener();
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protected:
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nsCWeakReference<nsListControlFrame> mFrame;
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nsCOMPtr<nsIContent> mContent; // ref counted
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};
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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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{
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public:
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friend nsresult NS_NewListControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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friend class nsSelectUpdateTimer;
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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,
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const nsHTMLReflowState* aReflowState,
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nsDidReflowStatus aStatus);
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NS_IMETHOD MoveTo(nsIPresContext* aPresContext, nscoord aX, nscoord aY);
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NS_IMETHOD Destroy(nsIPresContext *aPresContext);
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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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/**
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* Get the "type" of the frame
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*
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* @see nsLayoutAtoms::scrollFrame
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*/
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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#ifdef DEBUG
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// nsIFrameDebug
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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// nsIFormControlFrame
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NS_IMETHOD_(PRInt32) GetType() const;
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NS_IMETHOD GetName(nsAString* aName);
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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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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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NS_IMETHOD OnContentReset();
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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 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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// for accessibility purposes
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#ifdef ACCESSIBILITY
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NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
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#endif
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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 GetOptionText(PRInt32 aIndex, nsAString & 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();
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NS_IMETHOD SetOverrideReflowOptimization(PRBool aValue) { mOverrideReflowOpt = aValue; return NS_OK; }
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NS_IMETHOD GetOptionsContainer(nsIPresContext* aPresContext, nsIFrame** aFrame);
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NS_IMETHOD FireOnChange();
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NS_IMETHOD ComboboxFinish(PRInt32 aIndex);
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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 GetOptionSelected(PRInt32 aIndex, PRBool* aValue);
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NS_IMETHOD DoneAddingChildren(PRBool aIsDone);
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NS_IMETHOD OnOptionSelected(nsIPresContext* aPresContext,
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PRInt32 aIndex,
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PRBool aSelected);
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NS_IMETHOD OnOptionTextChanged(nsIDOMHTMLOptionElement* option);
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NS_IMETHOD GetDummyFrame(nsIFrame** aFrame);
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NS_IMETHOD SetDummyFrame(nsIFrame* aFrame);
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//nsIDOMEventListener
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NS_IMETHOD MouseDown(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD MouseUp(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD MouseClick(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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NS_IMETHOD MouseDblClick(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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NS_IMETHOD MouseOver(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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NS_IMETHOD MouseOut(nsIDOMEvent* aMouseEvent) { return NS_OK; }
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NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) { return NS_OK; }
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//nsIDOMEventMotionListener
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NS_IMETHOD MouseMove(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD DragMove(nsIDOMEvent* aMouseEvent);
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//nsIDOMKeyListener
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NS_IMETHOD KeyDown(nsIDOMEvent* aKeyEvent);
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NS_IMETHOD KeyUp(nsIDOMEvent* aKeyEvent) { return NS_OK; }
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NS_IMETHOD 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 void ComboboxFocusSet();
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// Weak Reference
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nsCWeakReferent *WeakReferent()
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{ return &mWeakReferent; }
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// Helper
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void SetPassId(PRInt16 aId) { mPassId = aId; }
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void PaintFocus(nsIRenderingContext& aRC, nsFramePaintLayer aWhichLayer);
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#ifdef ACCESSIBILITY
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void FireMenuItemActiveEvent(); // Inform assistive tech what got focused
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#endif
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protected:
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nsresult IsOptionDisabled(PRInt32 anIndex, PRBool &aIsDisabled);
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nsresult ScrollToFrame(nsIContent * aOptElement);
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nsresult ScrollToIndex(PRInt32 anIndex);
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PRBool IsClickingInCombobox(nsIDOMEvent* aMouseEvent);
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void AdjustIndexForDisabledOpt(PRInt32 aStartIndex, PRInt32 &anNewIndex,
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PRInt32 aNumOptions, PRInt32 aDoAdjustInc, PRInt32 aDoAdjustIncNext);
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virtual void ResetList(nsIPresContext* aPresContext, nsVoidArray * aInxList = nsnull);
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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
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// widget is created for drop-down lists.
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virtual nsresult CreateScrollingViewWidget(nsIView* aView, const nsStyleDisplay* aDisplay);
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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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// Utility methods
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nsresult GetSizeAttribute(PRInt32 *aSize);
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nsIContent* GetOptionFromContent(nsIContent *aContent);
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nsresult GetIndexFromDOMEvent(nsIDOMEvent* aMouseEvent, PRInt32& aCurIndex);
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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 GetViewOffset(nsIViewManager* aManager, nsIView* aView, nsPoint& aPoint);
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PRBool IsOptionElement(nsIContent* aContent);
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PRBool CheckIfAllFramesHere();
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PRInt32 GetIndexFromContent(nsIContent *aContent);
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PRBool IsLeftButton(nsIDOMEvent* aMouseEvent);
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void GetScrollableView(nsIScrollableView*& aScrollableView);
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// Dropped down stuff
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void SetComboboxItem(PRInt32 aIndex);
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PRBool IsInDropDownMode();
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// Selection
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PRBool SetOptionsSelectedFromFrame(PRInt32 aStartIndex,
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PRInt32 aEndIndex,
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PRBool aValue,
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PRBool aClearAll);
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PRBool ToggleOptionSelectedFromFrame(PRInt32 aIndex);
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PRBool SingleSelection(PRInt32 aClickedIndex, PRBool aDoToggle);
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PRBool ExtendedSelection(PRInt32 aStartIndex, PRInt32 aEndIndex,
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PRBool aClearAll);
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PRBool PerformSelection(PRInt32 aClickedIndex, PRBool aIsShift,
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PRBool aIsControl);
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PRBool HandleListSelection(nsIDOMEvent * aDOMEvent, PRInt32 selectedIndex);
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void InitSelectionRange(PRInt32 aClickedIndex);
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// Timer Methods
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nsresult StartUpdateTimer(nsIPresContext * aPresContext);
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void StopUpdateTimer();
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void ItemsHaveBeenRemoved(nsIPresContext * aPresContext);
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// Data Members
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PRInt32 mStartSelectionIndex;
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PRInt32 mEndSelectionIndex;
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PRPackedBool mChangesSinceDragStart;
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PRInt32 mSelectedIndexWhenPoppedDown;
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nsIComboboxControlFrame *mComboboxFrame;
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PRPackedBool mButtonDown;
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nscoord mMaxWidth;
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nscoord mMaxHeight;
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PRPackedBool mIsCapturingMouseEvents;
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PRInt32 mNumDisplayRows;
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PRBool mIsAllContentHere;
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PRPackedBool mIsAllFramesHere;
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PRPackedBool mHasBeenInitialized;
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PRPackedBool mDoneWithInitialReflow;
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PRPackedBool mOverrideReflowOpt;
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nsIPresContext* mPresContext; // XXX: Remove the need to cache the pres context.
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nsCOMPtr<nsIListEventListener> mEventListener; // ref counted
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nsCWeakReferent mWeakReferent; // so this obj can be used as a weak ptr
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// XXX temprary only until full system mouse capture works
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PRPackedBool mIsScrollbarVisible;
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PRInt16 mPassId;
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nsSize mCachedDesiredMaxSize;
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// Update timer
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nsSelectUpdateTimer * mUpdateTimer;
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nsIFrame* mDummyFrame;
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//Resize Reflow OpitmizationSize;
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nsSize mCacheSize;
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nscoord mCachedAscent;
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nsSize mCachedMaxElementSize;
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nsSize mCachedUnconstrainedSize;
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nsSize mCachedAvailableSize;
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static nsListControlFrame * mFocused;
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#ifdef DO_REFLOW_COUNTER
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PRInt32 mReflowId;
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#endif
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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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// for incremental typing navigation
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static nsAString& GetIncrementalString ();
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static DOMTimeStamp gLastKeyTime;
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};
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#endif /* nsListControlFrame_h___ */
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