зеркало из https://github.com/mozilla/gecko-dev.git
3160 строки
105 KiB
C++
3160 строки
105 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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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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* Pierre Phaneuf <pp@ludusdesign.com>
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* Mats Palmgren <mats.palmgren@bredband.net>
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nscore.h"
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#include "nsCOMPtr.h"
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#include "nsReadableUtils.h"
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#include "nsUnicharUtils.h"
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#include "nsListControlFrame.h"
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#include "nsFormControlFrame.h" // for COMPARE macro
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#include "nsFormControlHelper.h"
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#include "nsHTMLAtoms.h"
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#include "nsIFormControl.h"
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#include "nsIDeviceContext.h"
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#include "nsIDocument.h"
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#include "nsIDOMHTMLCollection.h"
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#include "nsIDOMHTMLOptionsCollection.h"
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#include "nsIDOMNSHTMLOptionCollectn.h"
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#include "nsIDOMHTMLSelectElement.h"
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#include "nsIDOMNSHTMLSelectElement.h"
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#include "nsIDOMHTMLOptionElement.h"
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#include "nsComboboxControlFrame.h"
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#include "nsIViewManager.h"
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#include "nsIScrollableView.h"
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#include "nsIDOMHTMLOptGroupElement.h"
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#include "nsWidgetsCID.h"
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#include "nsHTMLReflowCommand.h"
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#include "nsIPresShell.h"
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#include "nsHTMLParts.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsEventDispatcher.h"
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#include "nsIEventStateManager.h"
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#include "nsIEventListenerManager.h"
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#include "nsIDOMKeyEvent.h"
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#include "nsIDOMMouseEvent.h"
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#include "nsIPrivateDOMEvent.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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#include "nsILookAndFeel.h"
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#include "nsLayoutAtoms.h"
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#include "nsIFontMetrics.h"
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#include "nsIScrollableFrame.h"
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#include "nsIDOMEventTarget.h"
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#include "nsIDOMNSEvent.h"
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#include "nsGUIEvent.h"
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#include "nsIServiceManager.h"
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#include "nsINodeInfo.h"
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#ifdef ACCESSIBILITY
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#include "nsIAccessibilityService.h"
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#endif
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#include "nsISelectElement.h"
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#include "nsIPrivateDOMEvent.h"
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#include "nsCSSRendering.h"
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#include "nsReflowPath.h"
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#include "nsITheme.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 "nsLayoutUtils.h"
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#include "nsDisplayList.h"
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// Constants
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const nscoord kMaxDropDownRows = 20; // This matches the setting for 4.x browsers
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const PRInt32 kNothingSelected = -1;
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nsListControlFrame * nsListControlFrame::mFocused = nsnull;
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// Using for incremental typing navigation
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#define INCREMENTAL_SEARCH_KEYPRESS_TIME 1000
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// XXX, kyle.yuan@sun.com, there are 4 definitions for the same purpose:
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// nsMenuPopupFrame.h, nsListControlFrame.cpp, listbox.xml, tree.xml
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// need to find a good place to put them together.
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// if someone changes one, please also change the other.
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DOMTimeStamp nsListControlFrame::gLastKeyTime = 0;
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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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* Frames are not refcounted so they can't be used as event listeners.
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*****************************************************************************/
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class nsListEventListener : 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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nsListEventListener(nsListControlFrame *aFrame)
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: mFrame(aFrame) { }
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void SetFrame(nsListControlFrame *aFrame) { mFrame = aFrame; }
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NS_DECL_ISUPPORTS
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// nsIDOMEventListener
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NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent);
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// nsIDOMKeyListener
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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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// nsIDOMMouseListener
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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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// nsIDOMMouseMotionListener
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NS_IMETHOD MouseMove(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD DragMove(nsIDOMEvent* aMouseEvent);
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private:
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nsListControlFrame *mFrame;
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};
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//---------------------------------------------------------
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nsIFrame*
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NS_NewListControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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nsListControlFrame* it =
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new (aPresShell) nsListControlFrame(aPresShell, aPresShell->GetDocument(), aContext);
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if (it) {
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it->AddStateBits(NS_FRAME_INDEPENDENT_SELECTION);
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}
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return it;
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}
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//-----------------------------------------------------------
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// Reflow Debugging Macros
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// These let us "see" how many reflow counts are happening
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//-----------------------------------------------------------
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#ifdef DO_REFLOW_COUNTER
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#define MAX_REFLOW_CNT 1024
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static PRInt32 gTotalReqs = 0;;
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static PRInt32 gTotalReflows = 0;;
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static PRInt32 gReflowControlCntRQ[MAX_REFLOW_CNT];
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static PRInt32 gReflowControlCnt[MAX_REFLOW_CNT];
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static PRInt32 gReflowInx = -1;
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#define REFLOW_COUNTER() \
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if (mReflowId > -1) \
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gReflowControlCnt[mReflowId]++;
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#define REFLOW_COUNTER_REQUEST() \
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if (mReflowId > -1) \
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gReflowControlCntRQ[mReflowId]++;
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#define REFLOW_COUNTER_DUMP(__desc) \
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if (mReflowId > -1) {\
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gTotalReqs += gReflowControlCntRQ[mReflowId];\
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gTotalReflows += gReflowControlCnt[mReflowId];\
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printf("** Id:%5d %s RF: %d RQ: %d %d/%d %5.2f\n", \
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mReflowId, (__desc), \
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gReflowControlCnt[mReflowId], \
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gReflowControlCntRQ[mReflowId],\
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gTotalReflows, gTotalReqs, float(gTotalReflows)/float(gTotalReqs)*100.0f);\
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}
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#define REFLOW_COUNTER_INIT() \
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if (gReflowInx < MAX_REFLOW_CNT) { \
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gReflowInx++; \
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mReflowId = gReflowInx; \
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gReflowControlCnt[mReflowId] = 0; \
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gReflowControlCntRQ[mReflowId] = 0; \
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} else { \
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mReflowId = -1; \
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}
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// reflow messages
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#define REFLOW_DEBUG_MSG(_msg1) printf((_msg1))
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#define REFLOW_DEBUG_MSG2(_msg1, _msg2) printf((_msg1), (_msg2))
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#define REFLOW_DEBUG_MSG3(_msg1, _msg2, _msg3) printf((_msg1), (_msg2), (_msg3))
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#define REFLOW_DEBUG_MSG4(_msg1, _msg2, _msg3, _msg4) printf((_msg1), (_msg2), (_msg3), (_msg4))
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#else //-------------
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#define REFLOW_COUNTER_REQUEST()
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#define REFLOW_COUNTER()
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#define REFLOW_COUNTER_DUMP(__desc)
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#define REFLOW_COUNTER_INIT()
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#define REFLOW_DEBUG_MSG(_msg)
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#define REFLOW_DEBUG_MSG2(_msg1, _msg2)
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#define REFLOW_DEBUG_MSG3(_msg1, _msg2, _msg3)
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#define REFLOW_DEBUG_MSG4(_msg1, _msg2, _msg3, _msg4)
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#endif
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//------------------------------------------
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// This is for being VERY noisy
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//------------------------------------------
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#ifdef DO_VERY_NOISY
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#define REFLOW_NOISY_MSG(_msg1) printf((_msg1))
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#define REFLOW_NOISY_MSG2(_msg1, _msg2) printf((_msg1), (_msg2))
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#define REFLOW_NOISY_MSG3(_msg1, _msg2, _msg3) printf((_msg1), (_msg2), (_msg3))
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#define REFLOW_NOISY_MSG4(_msg1, _msg2, _msg3, _msg4) printf((_msg1), (_msg2), (_msg3), (_msg4))
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#else
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#define REFLOW_NOISY_MSG(_msg)
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#define REFLOW_NOISY_MSG2(_msg1, _msg2)
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#define REFLOW_NOISY_MSG3(_msg1, _msg2, _msg3)
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#define REFLOW_NOISY_MSG4(_msg1, _msg2, _msg3, _msg4)
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#endif
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//------------------------------------------
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// Displays value in pixels or twips
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//------------------------------------------
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#ifdef DO_PIXELS
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#define PX(__v) __v / 15
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#else
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#define PX(__v) __v
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#endif
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//------------------------------------------
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// Asserts if we return a desired size that
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// doesn't correctly match the mComputedWidth
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//------------------------------------------
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#ifdef DO_UNCONSTRAINED_CHECK
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#define UNCONSTRAINED_CHECK() \
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if (aReflowState.mComputedWidth != NS_UNCONSTRAINEDSIZE) { \
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nscoord width = aDesiredSize.width - borderPadding.left - borderPadding.right; \
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if (width != aReflowState.mComputedWidth) { \
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printf("aDesiredSize.width %d %d != aReflowState.mComputedWidth %d\n", aDesiredSize.width, width, aReflowState.mComputedWidth); \
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} \
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NS_ASSERTION(width == aReflowState.mComputedWidth, "Returning bad value when constrained!"); \
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}
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#else
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#define UNCONSTRAINED_CHECK()
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#endif
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//------------------------------------------------------
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//-- Done with macros
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//------------------------------------------------------
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//---------------------------------------------------------
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nsListControlFrame::nsListControlFrame(
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nsIPresShell* aShell, nsIDocument* aDocument, nsStyleContext* aContext)
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: nsHTMLScrollFrame(aShell, aContext, PR_FALSE)
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{
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mComboboxFrame = nsnull;
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mChangesSinceDragStart = PR_FALSE;
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mButtonDown = PR_FALSE;
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mMaxWidth = 0;
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mMaxHeight = 0;
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mIsAllContentHere = PR_FALSE;
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mIsAllFramesHere = PR_FALSE;
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mHasBeenInitialized = PR_FALSE;
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mNeedToReset = PR_TRUE;
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mPostChildrenLoadedReset = PR_FALSE;
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mCacheSize.width = -1;
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mCacheSize.height = -1;
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mCachedMaxElementWidth = -1;
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mCachedAvailableSize.width = -1;
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mCachedAvailableSize.height = -1;
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mCachedUnconstrainedSize.width = -1;
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mCachedUnconstrainedSize.height = -1;
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mOverrideReflowOpt = PR_FALSE;
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mPassId = 0;
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mControlSelectMode = PR_FALSE;
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REFLOW_COUNTER_INIT()
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}
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//---------------------------------------------------------
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nsListControlFrame::~nsListControlFrame()
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{
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REFLOW_COUNTER_DUMP("nsLCF");
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mComboboxFrame = nsnull;
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}
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// for Bug 47302 (remove this comment later)
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NS_IMETHODIMP
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nsListControlFrame::Destroy(nsPresContext *aPresContext)
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{
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// get the receiver interface from the browser button's content node
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nsCOMPtr<nsIDOMEventReceiver> receiver(do_QueryInterface(mContent));
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// Clear the frame pointer on our event listener, just in case the
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// event listener can outlive the frame.
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mEventListener->SetFrame(nsnull);
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receiver->RemoveEventListenerByIID(NS_STATIC_CAST(nsIDOMMouseListener*,
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mEventListener),
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NS_GET_IID(nsIDOMMouseListener));
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receiver->RemoveEventListenerByIID(NS_STATIC_CAST(nsIDOMMouseMotionListener*,
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mEventListener),
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NS_GET_IID(nsIDOMMouseMotionListener));
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receiver->RemoveEventListenerByIID(NS_STATIC_CAST(nsIDOMKeyListener*,
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mEventListener),
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NS_GET_IID(nsIDOMKeyListener));
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nsFormControlFrame::RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_FALSE);
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return nsHTMLScrollFrame::Destroy(aPresContext);
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}
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NS_IMETHODIMP
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nsListControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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// We allow visibility:hidden <select>s to contain visible options.
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// Don't allow painting of list controls when painting is suppressed.
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// XXX why do we need this here? we should never reach this. Maybe
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// because these can have widgets? Hmm
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if (aBuilder->IsBackgroundOnly())
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return NS_OK;
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// REVIEW: The selection visibility code that used to be here is what
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// we already do by default.
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// REVIEW: There was code here to paint the theme background. But as far
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// as I can tell, we'd just paint the theme background twice because
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// it was redundant with nsCSSRendering::PaintBackground
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return nsHTMLScrollFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
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}
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/**
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* This is called by the SelectsAreaFrame, which is the same
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* as the frame returned by GetOptionsContainer. It's the frame which is
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* scrolled by us.
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* @param aPt the offset of this frame, relative to the rendering reference
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* frame
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*/
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void nsListControlFrame::PaintFocus(nsIRenderingContext& aRC, nsPoint aPt)
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{
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if (mFocused != this) return;
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// The mEndSelectionIndex is what is currently being selected
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// use the selected index if this is kNothingSelected
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PRInt32 focusedIndex;
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if (mEndSelectionIndex == kNothingSelected) {
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focusedIndex = GetSelectedIndex();
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} else {
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focusedIndex = mEndSelectionIndex;
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}
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nsPresContext* presContext = GetPresContext();
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if (!GetScrollableView()) return;
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nsIPresShell *presShell = presContext->GetPresShell();
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if (!presShell) return;
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nsIFrame* containerFrame = GetOptionsContainer();
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if (!containerFrame) return;
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nsIFrame * childframe = nsnull;
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nsresult result = NS_ERROR_FAILURE;
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nsCOMPtr<nsIContent> focusedContent;
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nsCOMPtr<nsIDOMNSHTMLSelectElement> selectNSElement(do_QueryInterface(mContent));
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NS_ASSERTION(selectNSElement, "Can't be null");
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nsCOMPtr<nsISelectElement> selectElement(do_QueryInterface(mContent));
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NS_ASSERTION(selectElement, "Can't be null");
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// If we have a selected index then get that child frame
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if (focusedIndex != kNothingSelected) {
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focusedContent = GetOptionContent(focusedIndex);
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// otherwise we find the focusedContent's frame and scroll to it
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if (focusedContent) {
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childframe = presShell->GetPrimaryFrameFor(focusedContent);
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}
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} else {
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nsCOMPtr<nsIDOMHTMLSelectElement> selectHTMLElement(do_QueryInterface(mContent));
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NS_ASSERTION(selectElement, "Can't be null");
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// Since there isn't a selected item we need to show a focus ring around the first
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// non-disabled item and skip all the option group elements (nodes)
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nsCOMPtr<nsIDOMNode> node;
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PRUint32 length;
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selectHTMLElement->GetLength(&length);
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if (length) {
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// find the first non-disabled item
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PRBool isDisabled = PR_TRUE;
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for (PRInt32 i=0;i<PRInt32(length) && isDisabled;i++) {
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if (NS_FAILED(selectNSElement->Item(i, getter_AddRefs(node))) || !node) {
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break;
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}
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if (NS_FAILED(selectElement->IsOptionDisabled(i, &isDisabled))) {
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break;
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}
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if (isDisabled) {
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node = nsnull;
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} else {
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break;
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}
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}
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if (!node) {
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return;
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}
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}
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// if we found a node use, if not get the first child (this is for empty selects)
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if (node) {
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focusedContent = do_QueryInterface(node);
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childframe = presShell->GetPrimaryFrameFor(focusedContent);
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}
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if (!childframe) {
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// Failing all else, try the first thing we have.
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childframe = containerFrame->GetFirstChild(nsnull);
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result = NS_OK;
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}
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}
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nsRect fRect;
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if (childframe) {
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// get the child rect
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fRect = childframe->GetRect();
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// get it into the our coordinates
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fRect.MoveBy(childframe->GetParent()->GetOffsetTo(this));
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} else {
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fRect.x = fRect.y = 0;
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fRect.width = mRect.width;
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fRect.height = CalcFallbackRowHeight(0);
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fRect.MoveBy(containerFrame->GetOffsetTo(this));
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}
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fRect += aPt;
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PRBool lastItemIsSelected = PR_FALSE;
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if (focusedIndex != kNothingSelected) {
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nsCOMPtr<nsIDOMNode> node;
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if (NS_SUCCEEDED(selectNSElement->Item(focusedIndex, getter_AddRefs(node)))) {
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> domOpt(do_QueryInterface(node));
|
|
NS_ASSERTION(domOpt, "Something has gone seriously awry. This should be an option element!");
|
|
domOpt->GetSelected(&lastItemIsSelected);
|
|
}
|
|
}
|
|
|
|
// set up back stop colors and then ask L&F service for the real colors
|
|
nscolor color;
|
|
presContext->LookAndFeel()->
|
|
GetColor(lastItemIsSelected ?
|
|
nsILookAndFeel::eColor_WidgetSelectForeground :
|
|
nsILookAndFeel::eColor_WidgetSelectBackground, color);
|
|
|
|
nscoord onePixelInTwips = presContext->IntScaledPixelsToTwips(1);
|
|
|
|
nsRect dirty;
|
|
nscolor colors[] = {color, color, color, color};
|
|
PRUint8 borderStyle[] = {NS_STYLE_BORDER_STYLE_DOTTED, NS_STYLE_BORDER_STYLE_DOTTED, NS_STYLE_BORDER_STYLE_DOTTED, NS_STYLE_BORDER_STYLE_DOTTED};
|
|
nsRect innerRect = fRect;
|
|
innerRect.Deflate(nsSize(onePixelInTwips, onePixelInTwips));
|
|
nsCSSRendering::DrawDashedSides(0, aRC, dirty, borderStyle, colors, fRect, innerRect, 0, nsnull);
|
|
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Frames are not refcounted, no need to AddRef
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
|
|
{
|
|
if (NULL == aInstancePtr) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
if (aIID.Equals(NS_GET_IID(nsIFormControlFrame))) {
|
|
*aInstancePtr = (void*) ((nsIFormControlFrame*) this);
|
|
return NS_OK;
|
|
}
|
|
if (aIID.Equals(NS_GET_IID(nsIListControlFrame))) {
|
|
*aInstancePtr = (void *)((nsIListControlFrame*)this);
|
|
return NS_OK;
|
|
}
|
|
if (aIID.Equals(NS_GET_IID(nsISelectControlFrame))) {
|
|
*aInstancePtr = (void *)((nsISelectControlFrame*)this);
|
|
return NS_OK;
|
|
}
|
|
return nsHTMLScrollFrame::QueryInterface(aIID, aInstancePtr);
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
NS_IMETHODIMP nsListControlFrame::GetAccessible(nsIAccessible** aAccessible)
|
|
{
|
|
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
|
|
|
|
if (accService) {
|
|
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(mContent);
|
|
nsCOMPtr<nsIWeakReference> weakShell(do_GetWeakReference(GetPresContext()->PresShell()));
|
|
return accService->CreateHTMLListboxAccessible(node, weakShell, aAccessible);
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
#endif
|
|
|
|
//---------------------------------------------------------
|
|
// Reflow is overriden to constrain the listbox height to the number of rows and columns
|
|
// specified.
|
|
#ifdef DO_REFLOW_DEBUG
|
|
static int myCounter = 0;
|
|
|
|
static void printSize(char * aDesc, nscoord aSize)
|
|
{
|
|
printf(" %s: ", aDesc);
|
|
if (aSize == NS_UNCONSTRAINEDSIZE) {
|
|
printf("UNC");
|
|
} else {
|
|
printf("%d", aSize);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static nscoord
|
|
GetMaxOptionHeight(nsIFrame* aContainer)
|
|
{
|
|
nscoord result = 0;
|
|
for (nsIFrame* option = aContainer->GetFirstChild(nsnull);
|
|
option; option = option->GetNextSibling()) {
|
|
nscoord optionHeight;
|
|
if (nsCOMPtr<nsIDOMHTMLOptGroupElement>
|
|
(do_QueryInterface(option->GetContent()))) {
|
|
// an optgroup
|
|
optionHeight = GetMaxOptionHeight(option);
|
|
} else {
|
|
// an option
|
|
optionHeight = option->GetSize().height;
|
|
}
|
|
if (result < optionHeight)
|
|
result = optionHeight;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static inline PRBool
|
|
IsOptGroup(nsIContent *aContent)
|
|
{
|
|
return (aContent->NodeInfo()->Equals(nsHTMLAtoms::optgroup) &&
|
|
aContent->IsContentOfType(nsIContent::eHTML));
|
|
}
|
|
|
|
static inline PRBool
|
|
IsOption(nsIContent *aContent)
|
|
{
|
|
return (aContent->NodeInfo()->Equals(nsHTMLAtoms::option) &&
|
|
aContent->IsContentOfType(nsIContent::eHTML));
|
|
}
|
|
|
|
static PRUint32
|
|
GetNumberOfOptionsRecursive(nsIContent* aContent)
|
|
{
|
|
PRUint32 optionCount = 0;
|
|
const PRUint32 childCount = aContent ? aContent->GetChildCount() : 0;
|
|
for (PRUint32 index = 0; index < childCount; ++index) {
|
|
nsIContent* child = aContent->GetChildAt(index);
|
|
if (::IsOption(child)) {
|
|
++optionCount;
|
|
}
|
|
else if (::IsOptGroup(child)) {
|
|
optionCount += ::GetNumberOfOptionsRecursive(child);
|
|
}
|
|
}
|
|
return optionCount;
|
|
}
|
|
|
|
static nscoord
|
|
GetOptGroupLabelsHeight(nsPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nscoord aRowHeight)
|
|
{
|
|
nscoord height = 0;
|
|
const PRUint32 childCount = aContent ? aContent->GetChildCount() : 0;
|
|
for (PRUint32 index = 0; index < childCount; ++index) {
|
|
nsIContent* child = aContent->GetChildAt(index);
|
|
if (::IsOptGroup(child)) {
|
|
PRUint32 numOptions = ::GetNumberOfOptionsRecursive(child);
|
|
nscoord optionsHeight = aRowHeight * numOptions;
|
|
nsIFrame* frame = aPresContext->GetPresShell()->GetPrimaryFrameFor(child);
|
|
nscoord totalHeight = frame ? frame->GetSize().height : 0;
|
|
height += PR_MAX(0, totalHeight - optionsHeight);
|
|
}
|
|
}
|
|
return height;
|
|
}
|
|
|
|
//-----------------------------------------------------------------
|
|
// Main Reflow for ListBox/Dropdown
|
|
//-----------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
DO_GLOBAL_REFLOW_COUNT("nsListControlFrame", aReflowState.reason);
|
|
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
|
|
REFLOW_COUNTER_REQUEST();
|
|
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
|
|
#ifdef DO_REFLOW_DEBUG
|
|
printf("%p ** Id: %d nsLCF::Reflow %d R: ", this, mReflowId, myCounter++);
|
|
switch (aReflowState.reason) {
|
|
case eReflowReason_Initial:
|
|
printf("Initia");break;
|
|
case eReflowReason_Incremental:
|
|
printf("Increm");break;
|
|
case eReflowReason_Resize:
|
|
printf("Resize");break;
|
|
case eReflowReason_StyleChange:
|
|
printf("StyleC");break;
|
|
case eReflowReason_Dirty:
|
|
printf("Dirty ");break;
|
|
default:printf("<unknown>%d", aReflowState.reason);break;
|
|
}
|
|
|
|
printSize("AW", aReflowState.availableWidth);
|
|
printSize("AH", aReflowState.availableHeight);
|
|
printSize("CW", aReflowState.mComputedWidth);
|
|
printSize("CH", aReflowState.mComputedHeight);
|
|
printf("\n");
|
|
#if 0
|
|
{
|
|
const nsStyleDisplay* display = GetStyleDisplay();
|
|
printf("+++++++++++++++++++++++++++++++++ ");
|
|
switch (display->mVisible) {
|
|
case NS_STYLE_VISIBILITY_COLLAPSE: printf("NS_STYLE_VISIBILITY_COLLAPSE\n");break;
|
|
case NS_STYLE_VISIBILITY_HIDDEN: printf("NS_STYLE_VISIBILITY_HIDDEN\n");break;
|
|
case NS_STYLE_VISIBILITY_VISIBLE: printf("NS_STYLE_VISIBILITY_VISIBLE\n");break;
|
|
}
|
|
}
|
|
#endif
|
|
#endif // DEBUG_rodsXXX
|
|
|
|
PRBool bailOnWidth;
|
|
PRBool bailOnHeight;
|
|
// This ifdef is for turning off the optimization
|
|
// so we can check timings against the old version
|
|
#if 1
|
|
|
|
nsFormControlFrame::SkipResizeReflow(mCacheSize,
|
|
mCachedAscent,
|
|
mCachedMaxElementWidth,
|
|
mCachedAvailableSize,
|
|
aDesiredSize, aReflowState,
|
|
aStatus,
|
|
bailOnWidth, bailOnHeight);
|
|
|
|
// Here we bail if both the height and the width haven't changed
|
|
// also we see if we should override the optimization
|
|
//
|
|
// The optimization can get overridden by the combobox
|
|
// sometime the combobox knows that the list MUST do a full reflow
|
|
// no matter what
|
|
if (!mOverrideReflowOpt && bailOnWidth && bailOnHeight) {
|
|
REFLOW_DEBUG_MSG3("*** Done nsLCF - Bailing on DW: %d DH: %d ", PX(aDesiredSize.width), PX(aDesiredSize.height));
|
|
REFLOW_DEBUG_MSG3("bailOnWidth %d bailOnHeight %d\n", PX(bailOnWidth), PX(bailOnHeight));
|
|
NS_ASSERTION(aDesiredSize.width < 100000, "Width is still NS_UNCONSTRAINEDSIZE");
|
|
NS_ASSERTION(aDesiredSize.height < 100000, "Height is still NS_UNCONSTRAINEDSIZE");
|
|
return NS_OK;
|
|
} else if (mOverrideReflowOpt) {
|
|
mOverrideReflowOpt = PR_FALSE;
|
|
}
|
|
|
|
#else
|
|
bailOnWidth = PR_FALSE;
|
|
bailOnHeight = PR_FALSE;
|
|
#endif
|
|
|
|
// If all the content and frames are here
|
|
// then initialize it before reflow
|
|
if (mIsAllContentHere && !mHasBeenInitialized) {
|
|
if (PR_FALSE == mIsAllFramesHere) {
|
|
CheckIfAllFramesHere();
|
|
}
|
|
if (mIsAllFramesHere && !mHasBeenInitialized) {
|
|
mHasBeenInitialized = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
|
|
if (eReflowReason_Incremental == aReflowState.reason) {
|
|
nsHTMLReflowCommand *command = aReflowState.path->mReflowCommand;
|
|
if (command) {
|
|
// XXX So this may do it too often
|
|
// the side effect of this is if the user has scrolled to some other place in the list and
|
|
// an incremental reflow comes through the list gets scrolled to the first selected item
|
|
// I haven't been able to make it do it, but it will do it
|
|
// basically the real solution is to know when all the reframes are there.
|
|
PRInt32 selectedIndex = mEndSelectionIndex;
|
|
if (selectedIndex == kNothingSelected) {
|
|
selectedIndex = GetSelectedIndex();
|
|
}
|
|
ScrollToIndex(selectedIndex);
|
|
}
|
|
}
|
|
|
|
// Strategy: Let the inherited reflow happen as though the width and height of the
|
|
// ScrollFrame are big enough to allow the listbox to
|
|
// shrink to fit the longest option element line in the list.
|
|
// The desired width and height returned by the inherited reflow is returned,
|
|
// unless one of the following has been specified.
|
|
// 1. A css width has been specified.
|
|
// 2. The size has been specified.
|
|
// 3. The css height has been specified, but the number of rows has not.
|
|
// The size attribute overrides the height setting but the height setting
|
|
// should be honored if there isn't a size specified.
|
|
|
|
// Determine the desired width + height for the listbox +
|
|
aDesiredSize.width = 0;
|
|
aDesiredSize.height = 0;
|
|
|
|
// Add the list frame as a child of the form
|
|
if (eReflowReason_Initial == aReflowState.reason) {
|
|
nsFormControlFrame::RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_TRUE);
|
|
}
|
|
|
|
//--Calculate a width just big enough for the scrollframe to shrink around the
|
|
//longest element in the list
|
|
nsHTMLReflowState secondPassState(aReflowState);
|
|
nsHTMLReflowState firstPassState(aReflowState);
|
|
|
|
//nsHTMLReflowState firstPassState(aPresContext, nsnull,
|
|
// this, aDesiredSize);
|
|
|
|
// Get the size of option elements inside the listbox
|
|
// Compute the width based on the longest line in the listbox.
|
|
|
|
firstPassState.mComputedWidth = NS_UNCONSTRAINEDSIZE;
|
|
firstPassState.mComputedHeight = NS_UNCONSTRAINEDSIZE;
|
|
firstPassState.availableWidth = NS_UNCONSTRAINEDSIZE;
|
|
firstPassState.availableHeight = NS_UNCONSTRAINEDSIZE;
|
|
|
|
nsHTMLReflowMetrics scrolledAreaDesiredSize(PR_TRUE);
|
|
|
|
|
|
if (eReflowReason_Incremental == aReflowState.reason) {
|
|
nsHTMLReflowCommand *command = firstPassState.path->mReflowCommand;
|
|
if (command) {
|
|
nsReflowType type;
|
|
command->GetType(type);
|
|
firstPassState.reason = eReflowReason_StyleChange;
|
|
firstPassState.path = nsnull;
|
|
} else {
|
|
nsresult res = nsHTMLScrollFrame::Reflow(aPresContext,
|
|
scrolledAreaDesiredSize,
|
|
aReflowState,
|
|
aStatus);
|
|
if (NS_FAILED(res)) {
|
|
NS_ASSERTION(aDesiredSize.width < 100000, "Width is still NS_UNCONSTRAINEDSIZE");
|
|
NS_ASSERTION(aDesiredSize.height < 100000, "Height is still NS_UNCONSTRAINEDSIZE");
|
|
return res;
|
|
}
|
|
|
|
firstPassState.reason = eReflowReason_StyleChange;
|
|
firstPassState.path = nsnull;
|
|
}
|
|
}
|
|
|
|
if (mPassId == 0 || mPassId == 1) {
|
|
if (mPassId == 0) {
|
|
// We will reflow again, so tell the scrollframe not to scroll-to-restored-position
|
|
// yet
|
|
SetSuppressScrollbarUpdate(PR_TRUE);
|
|
}
|
|
nsresult res = nsHTMLScrollFrame::Reflow(aPresContext,
|
|
scrolledAreaDesiredSize,
|
|
firstPassState,
|
|
aStatus);
|
|
if (mPassId == 0) {
|
|
SetSuppressScrollbarUpdate(PR_FALSE);
|
|
}
|
|
|
|
if (NS_FAILED(res)) {
|
|
NS_ASSERTION(aDesiredSize.width < 100000, "Width is still NS_UNCONSTRAINEDSIZE");
|
|
NS_ASSERTION(aDesiredSize.height < 100000, "Height is still NS_UNCONSTRAINEDSIZE");
|
|
return res;
|
|
}
|
|
mCachedUnconstrainedSize.width = scrolledAreaDesiredSize.width;
|
|
mCachedUnconstrainedSize.height = scrolledAreaDesiredSize.height;
|
|
mCachedAscent = scrolledAreaDesiredSize.ascent;
|
|
mCachedDesiredMEW = scrolledAreaDesiredSize.mMaxElementWidth;
|
|
} else {
|
|
scrolledAreaDesiredSize.width = mCachedUnconstrainedSize.width;
|
|
scrolledAreaDesiredSize.height = mCachedUnconstrainedSize.height;
|
|
scrolledAreaDesiredSize.mMaxElementWidth = mCachedDesiredMEW;
|
|
}
|
|
|
|
// Compute the bounding box of the contents of the list using the area
|
|
// calculated by the first reflow as a starting point.
|
|
//
|
|
// The nsHTMLScrollFrame::Reflow adds border and padding to the
|
|
// maxElementWidth, so these need to be subtracted
|
|
nscoord scrolledAreaWidth = scrolledAreaDesiredSize.width -
|
|
(aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right);
|
|
nscoord scrolledAreaHeight = scrolledAreaDesiredSize.height -
|
|
(aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom);
|
|
|
|
// Set up max values
|
|
mMaxWidth = scrolledAreaWidth;
|
|
|
|
// Now the scrolledAreaWidth and scrolledAreaHeight are exactly
|
|
// wide and high enough to enclose their contents
|
|
PRBool isInDropDownMode = IsInDropDownMode();
|
|
|
|
nscoord visibleWidth = 0;
|
|
if (NS_UNCONSTRAINEDSIZE == aReflowState.mComputedWidth) {
|
|
visibleWidth = scrolledAreaWidth;
|
|
} else {
|
|
visibleWidth = aReflowState.mComputedWidth;
|
|
}
|
|
|
|
// Determine if a scrollbar will be needed, If so we need to add
|
|
// enough the width to allow for the scrollbar.
|
|
// The scrollbar will be needed under two conditions:
|
|
// (size * heightOfaRow) < scrolledAreaHeight or
|
|
// the height set through Style < scrolledAreaHeight.
|
|
|
|
// Calculate the height of a single row in the listbox or dropdown
|
|
// list by using the tallest of the grandchildren, since there may be
|
|
// option groups in addition to option elements, either of which may
|
|
// be visible or invisible.
|
|
PRInt32 heightOfARow = GetMaxOptionHeight(GetOptionsContainer());
|
|
|
|
// Check to see if we have zero items
|
|
PRInt32 length = GetNumberOfOptions();
|
|
if (heightOfARow == 0) {
|
|
heightOfARow = CalcFallbackRowHeight(length);
|
|
}
|
|
mMaxHeight = heightOfARow;
|
|
|
|
// Check to see if we have no width and height
|
|
// The following code measures the width and height
|
|
// of a bogus string so the list actually displays
|
|
nscoord visibleHeight = 0;
|
|
if (isInDropDownMode) {
|
|
// Compute the visible height of the drop-down list
|
|
// The dropdown list height is the smaller of its height setting or the height
|
|
// of the smallest box that can drawn around its contents.
|
|
visibleHeight = scrolledAreaHeight;
|
|
|
|
mNumDisplayRows = kMaxDropDownRows;
|
|
if (visibleHeight > (mNumDisplayRows * heightOfARow)) {
|
|
visibleHeight = (mNumDisplayRows * heightOfARow);
|
|
// This is an adaptive algorithm for figuring out how many rows
|
|
// should be displayed in the drop down. The standard size is 20 rows,
|
|
// but on 640x480 it is typically too big.
|
|
// This takes the height of the screen divides it by two and then subtracts off
|
|
// an estimated height of the combobox. I estimate it by taking the max element size
|
|
// of the drop down and multiplying it by 2 (this is arbitrary) then subtract off
|
|
// the border and padding of the drop down (again rather arbitrary)
|
|
// This all breaks down if the font of the combobox is a lot larger then the option items
|
|
// or CSS style has set the height of the combobox to be rather large.
|
|
// We can fix these cases later if they actually happen.
|
|
if (isInDropDownMode) {
|
|
nscoord screenHeightInPixels = 0;
|
|
if (NS_SUCCEEDED(nsFormControlFrame::GetScreenHeight(aPresContext, screenHeightInPixels))) {
|
|
float p2t;
|
|
p2t = aPresContext->PixelsToTwips();
|
|
nscoord screenHeight = NSIntPixelsToTwips(screenHeightInPixels, p2t);
|
|
|
|
nscoord availDropHgt = (screenHeight / 2) - (heightOfARow*2); // approx half screen minus combo size
|
|
availDropHgt -= aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
|
|
|
|
nscoord hgt = visibleHeight + aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
|
|
if (heightOfARow > 0) {
|
|
if (hgt > availDropHgt) {
|
|
visibleHeight = (availDropHgt / heightOfARow) * heightOfARow;
|
|
}
|
|
mNumDisplayRows = visibleHeight / heightOfARow;
|
|
} else {
|
|
// Hmmm, not sure what to do here. Punt, and make both of them one
|
|
visibleHeight = 1;
|
|
mNumDisplayRows = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
} else {
|
|
// Calculate the visible height of the listbox
|
|
if (NS_UNCONSTRAINEDSIZE != aReflowState.mComputedHeight) {
|
|
visibleHeight = aReflowState.mComputedHeight;
|
|
} else {
|
|
mNumDisplayRows = 1;
|
|
GetSizeAttribute(&mNumDisplayRows);
|
|
if (mNumDisplayRows >= 1) {
|
|
visibleHeight = mNumDisplayRows * heightOfARow;
|
|
} else {
|
|
// When SIZE=0 or unspecified we constrain the height to [2..kMaxDropDownRows] rows.
|
|
// We add in the height of optgroup labels (within the constraint above), bug 300474.
|
|
visibleHeight = ::GetOptGroupLabelsHeight(GetPresContext(), mContent, heightOfARow);
|
|
|
|
if (GetMultiple()) {
|
|
if (length < 2) {
|
|
// Add in 1 heightOfARow also when length==0 to match how we calculate the desired size.
|
|
visibleHeight = heightOfARow + PR_MAX(heightOfARow, visibleHeight);
|
|
} else {
|
|
visibleHeight = PR_MIN(kMaxDropDownRows * heightOfARow, length * heightOfARow + visibleHeight);
|
|
}
|
|
} else {
|
|
visibleHeight += 2 * heightOfARow;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// There are no items in the list
|
|
// but we want to include space for the scrollbars
|
|
// So fake like we will need scrollbars also
|
|
if (!isInDropDownMode && 0 == length) {
|
|
if (aReflowState.mComputedWidth != 0) {
|
|
scrolledAreaHeight = visibleHeight+1;
|
|
}
|
|
}
|
|
|
|
// The visible height is zero, this could be a select with no options
|
|
// or a select with a single option that has no content or no label
|
|
//
|
|
// So this may not be the best solution, but we get the height of the font
|
|
// for the list frame and use that as the max/minimum size for the contents
|
|
if (visibleHeight == 0) {
|
|
if (aReflowState.mComputedHeight != 0) {
|
|
nsCOMPtr<nsIFontMetrics> fontMet;
|
|
nsresult rvv = nsFormControlHelper::GetFrameFontFM(this, getter_AddRefs(fontMet));
|
|
if (NS_SUCCEEDED(rvv) && fontMet) {
|
|
aReflowState.rendContext->SetFont(fontMet);
|
|
fontMet->GetHeight(visibleHeight);
|
|
mMaxHeight = visibleHeight;
|
|
}
|
|
}
|
|
}
|
|
|
|
// When in dropdown mode make sure we obey min/max-width and min/max-height
|
|
if (!isInDropDownMode) {
|
|
nscoord fullWidth = visibleWidth + aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right;
|
|
if (fullWidth > aReflowState.mComputedMaxWidth) {
|
|
visibleWidth = aReflowState.mComputedMaxWidth - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right;
|
|
}
|
|
if (fullWidth < aReflowState.mComputedMinWidth) {
|
|
visibleWidth = aReflowState.mComputedMinWidth - aReflowState.mComputedBorderPadding.left - aReflowState.mComputedBorderPadding.right;
|
|
}
|
|
|
|
// calculate full height for comparison
|
|
// must add in Border & Padding twice because the scrolled area also inherits Border & Padding
|
|
nscoord fullHeight = 0;
|
|
if (aReflowState.mComputedHeight != 0) {
|
|
fullHeight = visibleHeight + aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
|
|
// + aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
|
|
}
|
|
if (fullHeight > aReflowState.mComputedMaxHeight) {
|
|
visibleHeight = aReflowState.mComputedMaxHeight - aReflowState.mComputedBorderPadding.top - aReflowState.mComputedBorderPadding.bottom;
|
|
}
|
|
if (fullHeight < aReflowState.mComputedMinHeight) {
|
|
visibleHeight = aReflowState.mComputedMinHeight - aReflowState.mComputedBorderPadding.top - aReflowState.mComputedBorderPadding.bottom;
|
|
}
|
|
}
|
|
|
|
// Do a second reflow with the adjusted width and height settings
|
|
// This sets up all of the frames with the correct width and height.
|
|
secondPassState.mComputedWidth = visibleWidth;
|
|
secondPassState.mComputedHeight = visibleHeight;
|
|
secondPassState.reason = eReflowReason_Resize;
|
|
|
|
if (mPassId == 0 || mPassId == 2 || visibleHeight != scrolledAreaHeight ||
|
|
visibleWidth != scrolledAreaWidth) {
|
|
nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize, secondPassState, aStatus);
|
|
if (aReflowState.mComputedHeight == 0) {
|
|
aDesiredSize.ascent = 0;
|
|
aDesiredSize.descent = 0;
|
|
aDesiredSize.height = 0;
|
|
}
|
|
|
|
// Set the max element size to be the same as the desired element size.
|
|
} else {
|
|
// aDesiredSize is the desired frame size, so includes border and padding
|
|
aDesiredSize.width = visibleWidth +
|
|
(aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right);
|
|
aDesiredSize.height = visibleHeight +
|
|
(aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom);
|
|
aDesiredSize.ascent =
|
|
scrolledAreaDesiredSize.ascent + aReflowState.mComputedBorderPadding.top;
|
|
aDesiredSize.descent = aDesiredSize.height - aDesiredSize.ascent;
|
|
}
|
|
|
|
if (aDesiredSize.mComputeMEW) {
|
|
aDesiredSize.mMaxElementWidth = aDesiredSize.width;
|
|
}
|
|
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
|
|
#ifdef DEBUG_rodsX
|
|
if (!isInDropDownMode) {
|
|
PRInt32 numRows = 1;
|
|
GetSizeAttribute(&numRows);
|
|
printf("%d ", numRows);
|
|
if (numRows == 2) {
|
|
COMPARE_QUIRK_SIZE("nsListControlFrame", 56, 38)
|
|
} else if (numRows == 3) {
|
|
COMPARE_QUIRK_SIZE("nsListControlFrame", 56, 54)
|
|
} else if (numRows == 4) {
|
|
COMPARE_QUIRK_SIZE("nsListControlFrame", 56, 70)
|
|
} else {
|
|
COMPARE_QUIRK_SIZE("nsListControlFrame", 127, 118)
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (aReflowState.availableWidth != NS_UNCONSTRAINEDSIZE) {
|
|
mCachedAvailableSize.width = aDesiredSize.width - (aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right);
|
|
REFLOW_DEBUG_MSG2("** nsLCF Caching AW: %d\n", PX(mCachedAvailableSize.width));
|
|
}
|
|
if (aReflowState.availableHeight != NS_UNCONSTRAINEDSIZE) {
|
|
mCachedAvailableSize.height = aDesiredSize.height - (aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom);
|
|
REFLOW_DEBUG_MSG2("** nsLCF Caching AH: %d\n", PX(mCachedAvailableSize.height));
|
|
}
|
|
|
|
//REFLOW_DEBUG_MSG3("** nsLCF Caching AW: %d AH: %d\n", PX(mCachedAvailableSize.width), PX(mCachedAvailableSize.height));
|
|
|
|
nsFormControlFrame::SetupCachedSizes(mCacheSize, mCachedAscent,
|
|
mCachedMaxElementWidth, aDesiredSize);
|
|
|
|
REFLOW_DEBUG_MSG3("** Done nsLCF DW: %d DH: %d\n\n", PX(aDesiredSize.width), PX(aDesiredSize.height));
|
|
|
|
REFLOW_COUNTER();
|
|
|
|
#ifdef DO_REFLOW_COUNTER
|
|
if (gReflowControlCnt[mReflowId] > 50) {
|
|
REFLOW_DEBUG_MSG3("** Id: %d Cnt: %d ", mReflowId, gReflowControlCnt[mReflowId]);
|
|
REFLOW_DEBUG_MSG3("Done nsLCF DW: %d DH: %d\n", PX(aDesiredSize.width), PX(aDesiredSize.height));
|
|
}
|
|
#endif
|
|
|
|
NS_ASSERTION(aDesiredSize.width < 100000, "Width is still NS_UNCONSTRAINEDSIZE");
|
|
NS_ASSERTION(aDesiredSize.height < 100000, "Height is still NS_UNCONSTRAINEDSIZE");
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsGfxScrollFrameInner::ScrollbarStyles
|
|
nsListControlFrame::GetScrollbarStyles() const
|
|
{
|
|
// We can't express this in the style system yet; when we can, this can go away
|
|
// and GetScrollbarStyles can be devirtualized
|
|
PRInt32 verticalStyle = IsInDropDownMode() ? NS_STYLE_OVERFLOW_AUTO
|
|
: NS_STYLE_OVERFLOW_SCROLL;
|
|
return nsGfxScrollFrameInner::ScrollbarStyles(NS_STYLE_OVERFLOW_HIDDEN,
|
|
verticalStyle);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::IsOptionElement(nsIContent* aContent)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optElem;
|
|
if (NS_SUCCEEDED(aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLOptionElement),(void**) getter_AddRefs(optElem)))) {
|
|
if (optElem != nsnull) {
|
|
result = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsListControlFrame::GetContentInsertionFrame() {
|
|
return GetOptionsContainer()->GetContentInsertionFrame();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Starts at the passed in content object and walks up the
|
|
// parent heierarchy looking for the nsIDOMHTMLOptionElement
|
|
//---------------------------------------------------------
|
|
nsIContent *
|
|
nsListControlFrame::GetOptionFromContent(nsIContent *aContent)
|
|
{
|
|
for (nsIContent* content = aContent; content; content = content->GetParent()) {
|
|
if (IsOptionElement(content)) {
|
|
return content;
|
|
}
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Finds the index of the hit frame's content in the list
|
|
// of option elements
|
|
//---------------------------------------------------------
|
|
PRInt32
|
|
nsListControlFrame::GetIndexFromContent(nsIContent *aContent)
|
|
{
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> option;
|
|
option = do_QueryInterface(aContent);
|
|
if (option) {
|
|
PRInt32 retval;
|
|
option->GetIndex(&retval);
|
|
if (retval >= 0) {
|
|
return retval;
|
|
}
|
|
}
|
|
return kNothingSelected;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::ExtendedSelection(PRInt32 aStartIndex,
|
|
PRInt32 aEndIndex,
|
|
PRBool aClearAll)
|
|
{
|
|
return SetOptionsSelectedFromFrame(aStartIndex, aEndIndex,
|
|
PR_TRUE, aClearAll);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::SingleSelection(PRInt32 aClickedIndex, PRBool aDoToggle)
|
|
{
|
|
if (mComboboxFrame) {
|
|
mComboboxFrame->UpdateRecentIndex(GetSelectedIndex());
|
|
}
|
|
|
|
PRBool wasChanged = PR_FALSE;
|
|
// Get Current selection
|
|
if (aDoToggle) {
|
|
wasChanged = ToggleOptionSelectedFromFrame(aClickedIndex);
|
|
} else {
|
|
wasChanged = SetOptionsSelectedFromFrame(aClickedIndex, aClickedIndex,
|
|
PR_TRUE, PR_TRUE);
|
|
}
|
|
ScrollToIndex(aClickedIndex);
|
|
mStartSelectionIndex = aClickedIndex;
|
|
mEndSelectionIndex = aClickedIndex;
|
|
return wasChanged;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::InitSelectionRange(PRInt32 aClickedIndex)
|
|
{
|
|
//
|
|
// If nothing is selected, set the start selection depending on where
|
|
// the user clicked and what the initial selection is:
|
|
// - if the user clicked *before* selectedIndex, set the start index to
|
|
// the end of the first contiguous selection.
|
|
// - if the user clicked *after* the end of the first contiguous
|
|
// selection, set the start index to selectedIndex.
|
|
// - if the user clicked *within* the first contiguous selection, set the
|
|
// start index to selectedIndex.
|
|
// The last two rules, of course, boil down to the same thing: if the user
|
|
// clicked >= selectedIndex, return selectedIndex.
|
|
//
|
|
// This makes it so that shift click works properly when you first click
|
|
// in a multiple select.
|
|
//
|
|
PRInt32 selectedIndex = GetSelectedIndex();
|
|
if (selectedIndex >= 0) {
|
|
// Get the end of the contiguous selection
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
NS_ASSERTION(options, "Collection of options is null!");
|
|
PRUint32 numOptions;
|
|
options->GetLength(&numOptions);
|
|
PRUint32 i;
|
|
// Push i to one past the last selected index in the group
|
|
for (i=selectedIndex+1; i < numOptions; i++) {
|
|
PRBool selected;
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> option = GetOption(options, i);
|
|
option->GetSelected(&selected);
|
|
if (!selected) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (aClickedIndex < selectedIndex) {
|
|
// User clicked before selection, so start selection at end of
|
|
// contiguous selection
|
|
mStartSelectionIndex = i-1;
|
|
mEndSelectionIndex = selectedIndex;
|
|
} else {
|
|
// User clicked after selection, so start selection at start of
|
|
// contiguous selection
|
|
mStartSelectionIndex = selectedIndex;
|
|
mEndSelectionIndex = i-1;
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::PerformSelection(PRInt32 aClickedIndex,
|
|
PRBool aIsShift,
|
|
PRBool aIsControl)
|
|
{
|
|
PRBool wasChanged = PR_FALSE;
|
|
|
|
if (aClickedIndex == kNothingSelected) {
|
|
}
|
|
else if (GetMultiple()) {
|
|
if (aIsShift) {
|
|
// Make sure shift+click actually does something expected when
|
|
// the user has never clicked on the select
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
InitSelectionRange(aClickedIndex);
|
|
}
|
|
|
|
// Get the range from beginning (low) to end (high)
|
|
// Shift *always* works, even if the current option is disabled
|
|
PRInt32 startIndex;
|
|
PRInt32 endIndex;
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
startIndex = aClickedIndex;
|
|
endIndex = aClickedIndex;
|
|
} else if (mStartSelectionIndex <= aClickedIndex) {
|
|
startIndex = mStartSelectionIndex;
|
|
endIndex = aClickedIndex;
|
|
} else {
|
|
startIndex = aClickedIndex;
|
|
endIndex = mStartSelectionIndex;
|
|
}
|
|
|
|
// Clear only if control was not pressed
|
|
wasChanged = ExtendedSelection(startIndex, endIndex, !aIsControl);
|
|
ScrollToIndex(aClickedIndex);
|
|
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
mStartSelectionIndex = aClickedIndex;
|
|
mEndSelectionIndex = aClickedIndex;
|
|
} else {
|
|
mEndSelectionIndex = aClickedIndex;
|
|
}
|
|
} else if (aIsControl) {
|
|
wasChanged = SingleSelection(aClickedIndex, PR_TRUE);
|
|
} else {
|
|
wasChanged = SingleSelection(aClickedIndex, PR_FALSE);
|
|
}
|
|
} else {
|
|
wasChanged = SingleSelection(aClickedIndex, PR_FALSE);
|
|
}
|
|
|
|
return wasChanged;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::HandleListSelection(nsIDOMEvent* aEvent,
|
|
PRInt32 aClickedIndex)
|
|
{
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aEvent);
|
|
PRBool isShift;
|
|
PRBool isControl;
|
|
#if defined(XP_MAC) || defined(XP_MACOSX)
|
|
mouseEvent->GetMetaKey(&isControl);
|
|
#else
|
|
mouseEvent->GetCtrlKey(&isControl);
|
|
#endif
|
|
mouseEvent->GetShiftKey(&isShift);
|
|
return PerformSelection(aClickedIndex, isShift, isControl);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::CaptureMouseEvents(PRBool aGrabMouseEvents)
|
|
{
|
|
// Currently cocoa widgets use a native popup widget which tracks clicks synchronously,
|
|
// so we never want to do mouse capturing. Note that we only bail if the list
|
|
// is in drop-down mode, and the caller is requesting capture (we let release capture
|
|
// requests go through to ensure that we can release capture requested via other
|
|
// code paths, if any exist).
|
|
if (aGrabMouseEvents && IsInDropDownMode() && nsComboboxControlFrame::ToolkitHasNativePopup())
|
|
return;
|
|
|
|
nsIView* view = GetScrolledFrame()->GetView();
|
|
|
|
NS_ASSERTION(view, "no view???");
|
|
if (NS_UNLIKELY(!view))
|
|
return;
|
|
|
|
nsIViewManager* viewMan = view->GetViewManager();
|
|
if (viewMan) {
|
|
PRBool result;
|
|
// It's not clear why we don't have the widget capture mouse events here.
|
|
if (aGrabMouseEvents) {
|
|
viewMan->GrabMouseEvents(view, result);
|
|
} else {
|
|
nsIView* curGrabber;
|
|
viewMan->GetMouseEventGrabber(curGrabber);
|
|
PRBool dropDownIsHidden = PR_FALSE;
|
|
if (IsInDropDownMode()) {
|
|
dropDownIsHidden = !mComboboxFrame->IsDroppedDown();
|
|
}
|
|
if (curGrabber == view || dropDownIsHidden) {
|
|
// only unset the grabber if *we* are the ones doing the grabbing
|
|
// (or if the dropdown is hidden, in which case NO-ONE should be
|
|
// grabbing anything
|
|
// it could be a scrollbar inside this listbox which is actually grabbing
|
|
// This shouldn't be necessary. We should simply ensure that events targeting
|
|
// scrollbars are never visible to DOM consumers.
|
|
viewMan->GrabMouseEvents(nsnull, result);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::HandleEvent(nsPresContext* aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aEventStatus);
|
|
|
|
/*const char * desc[] = {"NS_MOUSE_MOVE",
|
|
"NS_MOUSE_LEFT_BUTTON_UP",
|
|
"NS_MOUSE_LEFT_BUTTON_DOWN",
|
|
"<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>",
|
|
"NS_MOUSE_MIDDLE_BUTTON_UP",
|
|
"NS_MOUSE_MIDDLE_BUTTON_DOWN",
|
|
"<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>",
|
|
"NS_MOUSE_RIGHT_BUTTON_UP",
|
|
"NS_MOUSE_RIGHT_BUTTON_DOWN",
|
|
"NS_MOUSE_ENTER_SYNTH",
|
|
"NS_MOUSE_EXIT_SYNTH",
|
|
"NS_MOUSE_LEFT_DOUBLECLICK",
|
|
"NS_MOUSE_MIDDLE_DOUBLECLICK",
|
|
"NS_MOUSE_RIGHT_DOUBLECLICK",
|
|
"NS_MOUSE_LEFT_CLICK",
|
|
"NS_MOUSE_MIDDLE_CLICK",
|
|
"NS_MOUSE_RIGHT_CLICK"};
|
|
int inx = aEvent->message-NS_MOUSE_MESSAGE_START;
|
|
if (inx >= 0 && inx <= (NS_MOUSE_RIGHT_CLICK-NS_MOUSE_MESSAGE_START)) {
|
|
printf("Mouse in ListFrame %s [%d]\n", desc[inx], aEvent->message);
|
|
} else {
|
|
printf("Mouse in ListFrame <UNKNOWN> [%d]\n", aEvent->message);
|
|
}*/
|
|
|
|
if (nsEventStatus_eConsumeNoDefault == *aEventStatus)
|
|
return NS_OK;
|
|
|
|
// do we have style that affects how we are selected?
|
|
// do we have user-input style?
|
|
const nsStyleUserInterface* uiStyle = GetStyleUserInterface();
|
|
if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
|
|
return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
|
|
if (nsFormControlHelper::GetDisabled(mContent))
|
|
return NS_OK;
|
|
|
|
return nsHTMLScrollFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::SetInitialChildList(nsPresContext* aPresContext,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aChildList)
|
|
{
|
|
// First check to see if all the content has been added
|
|
mIsAllContentHere = mContent->IsDoneAddingChildren();
|
|
if (!mIsAllContentHere) {
|
|
mIsAllFramesHere = PR_FALSE;
|
|
mHasBeenInitialized = PR_FALSE;
|
|
}
|
|
nsresult rv = nsHTMLScrollFrame::SetInitialChildList(aPresContext, aListName, aChildList);
|
|
|
|
// If all the content is here now check
|
|
// to see if all the frames have been created
|
|
/*if (mIsAllContentHere) {
|
|
// If all content and frames are here
|
|
// the reset/initialize
|
|
if (CheckIfAllFramesHere()) {
|
|
ResetList(aPresContext);
|
|
mHasBeenInitialized = PR_TRUE;
|
|
}
|
|
}*/
|
|
|
|
return rv;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::GetSizeAttribute(PRInt32 *aSize) {
|
|
nsresult rv = NS_OK;
|
|
nsIDOMHTMLSelectElement* selectElement;
|
|
rv = mContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),(void**) &selectElement);
|
|
if (mContent && NS_SUCCEEDED(rv)) {
|
|
rv = selectElement->GetSize(aSize);
|
|
NS_RELEASE(selectElement);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::Init(nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIFrame* aPrevInFlow)
|
|
{
|
|
nsresult result = nsHTMLScrollFrame::Init(aContent, aParent, aPrevInFlow);
|
|
|
|
// get the receiver interface from the browser button's content node
|
|
nsCOMPtr<nsIDOMEventReceiver> receiver(do_QueryInterface(mContent));
|
|
|
|
// we shouldn't have to unregister this listener because when
|
|
// our frame goes away all these content node go away as well
|
|
// because our frame is the only one who references them.
|
|
// we need to hook up our listeners before the editor is initialized
|
|
mEventListener = new nsListEventListener(this);
|
|
if (!mEventListener)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
receiver->AddEventListenerByIID(NS_STATIC_CAST(nsIDOMMouseListener*,
|
|
mEventListener),
|
|
NS_GET_IID(nsIDOMMouseListener));
|
|
|
|
receiver->AddEventListenerByIID(NS_STATIC_CAST(nsIDOMMouseMotionListener*,
|
|
mEventListener),
|
|
NS_GET_IID(nsIDOMMouseMotionListener));
|
|
|
|
receiver->AddEventListenerByIID(NS_STATIC_CAST(nsIDOMKeyListener*,
|
|
mEventListener),
|
|
NS_GET_IID(nsIDOMKeyListener));
|
|
|
|
mStartSelectionIndex = kNothingSelected;
|
|
mEndSelectionIndex = kNothingSelected;
|
|
|
|
return result;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Returns whether the nsIDOMHTMLSelectElement supports
|
|
// mulitple selection
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::GetMultiple(nsIDOMHTMLSelectElement* aSelect) const
|
|
{
|
|
PRBool multiple = PR_FALSE;
|
|
nsresult rv = NS_OK;
|
|
if (aSelect) {
|
|
rv = aSelect->GetMultiple(&multiple);
|
|
} else {
|
|
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement =
|
|
do_QueryInterface(mContent);
|
|
|
|
if (selectElement) {
|
|
rv = selectElement->GetMultiple(&multiple);
|
|
}
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
return multiple;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------
|
|
// Returns the nsIContent object in the collection
|
|
// for a given index (AddRefs)
|
|
//---------------------------------------------------------
|
|
already_AddRefed<nsIContent>
|
|
nsListControlFrame::GetOptionAsContent(nsIDOMHTMLOptionsCollection* aCollection, PRInt32 aIndex)
|
|
{
|
|
nsIContent * content = nsnull;
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement = GetOption(aCollection,
|
|
aIndex);
|
|
|
|
NS_ASSERTION(optionElement != nsnull, "could not get option element by index!");
|
|
|
|
if (optionElement) {
|
|
CallQueryInterface(optionElement, &content);
|
|
}
|
|
|
|
return content;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// for a given index it returns the nsIContent object
|
|
// from the select
|
|
//---------------------------------------------------------
|
|
already_AddRefed<nsIContent>
|
|
nsListControlFrame::GetOptionContent(PRInt32 aIndex) const
|
|
|
|
{
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
NS_ASSERTION(options.get() != nsnull, "Collection of options is null!");
|
|
|
|
if (options) {
|
|
return GetOptionAsContent(options, aIndex);
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// This returns the options collection for aContent, if any
|
|
//---------------------------------------------------------
|
|
already_AddRefed<nsIDOMHTMLOptionsCollection>
|
|
nsListControlFrame::GetOptions(nsIContent * aContent)
|
|
{
|
|
nsIDOMHTMLOptionsCollection* options = nsnull;
|
|
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement = do_QueryInterface(aContent);
|
|
if (selectElement) {
|
|
selectElement->GetOptions(&options); // AddRefs (1)
|
|
}
|
|
|
|
return options;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Returns the nsIDOMHTMLOptionElement for a given index
|
|
// in the select's collection
|
|
//---------------------------------------------------------
|
|
already_AddRefed<nsIDOMHTMLOptionElement>
|
|
nsListControlFrame::GetOption(nsIDOMHTMLOptionsCollection* aCollection,
|
|
PRInt32 aIndex)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
if (NS_SUCCEEDED(aCollection->Item(aIndex, getter_AddRefs(node)))) {
|
|
NS_ASSERTION(node,
|
|
"Item was successful, but node from collection was null!");
|
|
if (node) {
|
|
nsIDOMHTMLOptionElement* option = nsnull;
|
|
CallQueryInterface(node, &option);
|
|
|
|
return option;
|
|
}
|
|
} else {
|
|
NS_ERROR("Couldn't get option by index from collection!");
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------
|
|
// For a given piece of content, it determines whether the
|
|
// content (an option) is selected or not
|
|
// return PR_TRUE if it is, PR_FALSE if it is NOT
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::IsContentSelected(nsIContent* aContent) const
|
|
{
|
|
PRBool isSelected = PR_FALSE;
|
|
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optEl = do_QueryInterface(aContent);
|
|
if (optEl)
|
|
optEl->GetSelected(&isSelected);
|
|
|
|
return isSelected;
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------
|
|
// For a given index is return whether the content is selected
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::IsContentSelectedByIndex(PRInt32 aIndex) const
|
|
{
|
|
nsCOMPtr<nsIContent> content = GetOptionContent(aIndex);
|
|
NS_ASSERTION(content, "Failed to retrieve option content");
|
|
|
|
return IsContentSelected(content);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// gets the content (an option) by index and then set it as
|
|
// being selected or not selected
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::OnOptionSelected(nsPresContext* aPresContext,
|
|
PRInt32 aIndex,
|
|
PRBool aSelected)
|
|
{
|
|
if (aSelected) {
|
|
ScrollToIndex(aIndex);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRIntn
|
|
nsListControlFrame::GetSkipSides() const
|
|
{
|
|
// Don't skip any sides during border rendering
|
|
return 0;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::OnContentReset()
|
|
{
|
|
ResetList(PR_TRUE);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Resets the select back to it's original default values;
|
|
// those values as determined by the original HTML
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::ResetList(PRBool aAllowScrolling)
|
|
{
|
|
REFLOW_DEBUG_MSG("LBX::ResetList\n");
|
|
|
|
// if all the frames aren't here
|
|
// don't bother reseting
|
|
if (!mIsAllFramesHere) {
|
|
return;
|
|
}
|
|
|
|
if (aAllowScrolling) {
|
|
mPostChildrenLoadedReset = PR_TRUE;
|
|
|
|
// Scroll to the selected index
|
|
PRInt32 indexToSelect = kNothingSelected;
|
|
|
|
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement(do_QueryInterface(mContent));
|
|
NS_ASSERTION(selectElement, "No select element!");
|
|
if (selectElement) {
|
|
selectElement->GetSelectedIndex(&indexToSelect);
|
|
ScrollToIndex(indexToSelect);
|
|
}
|
|
}
|
|
|
|
mStartSelectionIndex = kNothingSelected;
|
|
mEndSelectionIndex = kNothingSelected;
|
|
|
|
// Combobox will redisplay itself with the OnOptionSelected event
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
|
|
{
|
|
if (aOn) {
|
|
ComboboxFocusSet();
|
|
mFocused = this;
|
|
} else {
|
|
mFocused = nsnull;
|
|
}
|
|
|
|
// Make sure the SelectArea frame gets painted
|
|
Invalidate(nsRect(0,0,mRect.width,mRect.height), PR_TRUE);
|
|
}
|
|
|
|
void nsListControlFrame::ComboboxFocusSet()
|
|
{
|
|
gLastKeyTime = 0;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::SetComboboxFrame(nsIFrame* aComboboxFrame)
|
|
{
|
|
if (nsnull != aComboboxFrame) {
|
|
aComboboxFrame->QueryInterface(NS_GET_IID(nsIComboboxControlFrame),(void**) &mComboboxFrame);
|
|
}
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------
|
|
// Gets the text of the currently selected item
|
|
// if the there are zero items then an empty string is returned
|
|
// if there is nothing selected, then the 0th item's text is returned
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::GetOptionText(PRInt32 aIndex, nsAString & aStr)
|
|
{
|
|
aStr.SetLength(0);
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
|
|
if (options) {
|
|
PRUint32 numOptions;
|
|
options->GetLength(&numOptions);
|
|
|
|
if (numOptions != 0) {
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement =
|
|
GetOption(options, aIndex);
|
|
if (optionElement) {
|
|
#if 0 // This is for turning off labels Bug 4050
|
|
nsAutoString text;
|
|
optionElement->GetLabel(text);
|
|
// the return value is always NS_OK from DOMElements
|
|
// it is meaningless to check for it
|
|
if (!text.IsEmpty()) {
|
|
nsAutoString compressText = text;
|
|
compressText.CompressWhitespace(PR_TRUE, PR_TRUE);
|
|
if (!compressText.IsEmpty()) {
|
|
text = compressText;
|
|
}
|
|
}
|
|
|
|
if (text.IsEmpty()) {
|
|
// the return value is always NS_OK from DOMElements
|
|
// it is meaningless to check for it
|
|
optionElement->GetText(text);
|
|
}
|
|
aStr = text;
|
|
#else
|
|
optionElement->GetText(aStr);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRInt32
|
|
nsListControlFrame::GetSelectedIndex()
|
|
{
|
|
PRInt32 aIndex;
|
|
|
|
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement(do_QueryInterface(mContent));
|
|
selectElement->GetSelectedIndex(&aIndex);
|
|
|
|
return aIndex;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::IsInDropDownMode() const
|
|
{
|
|
return (mComboboxFrame != nsnull);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRInt32
|
|
nsListControlFrame::GetNumberOfOptions()
|
|
{
|
|
if (mContent != nsnull) {
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
|
|
if (!options) {
|
|
return 0;
|
|
} else {
|
|
PRUint32 length = 0;
|
|
options->GetLength(&length);
|
|
return (PRInt32)length;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
PRBool nsListControlFrame::CheckIfAllFramesHere()
|
|
{
|
|
// Get the number of optgroups and options
|
|
//PRInt32 numContentItems = 0;
|
|
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(mContent));
|
|
if (node) {
|
|
// XXX Need to find a fail proff way to determine that
|
|
// all the frames are there
|
|
mIsAllFramesHere = PR_TRUE;//NS_OK == CountAllChild(node, numContentItems);
|
|
}
|
|
// now make sure we have a frame each piece of content
|
|
|
|
return mIsAllFramesHere;
|
|
}
|
|
|
|
//-------------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::DoneAddingChildren(PRBool aIsDone)
|
|
{
|
|
mIsAllContentHere = aIsDone;
|
|
if (mIsAllContentHere) {
|
|
// Here we check to see if all the frames have been created
|
|
// for all the content.
|
|
// If so, then we can initialize;
|
|
if (mIsAllFramesHere == PR_FALSE) {
|
|
// if all the frames are now present we can initialize
|
|
if (CheckIfAllFramesHere()) {
|
|
mHasBeenInitialized = PR_TRUE;
|
|
ResetList(PR_TRUE);
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//-------------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::AddOption(nsPresContext* aPresContext, PRInt32 aIndex)
|
|
{
|
|
#ifdef DO_REFLOW_DEBUG
|
|
printf("---- Id: %d nsLCF %p Added Option %d\n", mReflowId, this, aIndex);
|
|
#endif
|
|
|
|
if (!mIsAllContentHere) {
|
|
mIsAllContentHere = mContent->IsDoneAddingChildren();
|
|
if (!mIsAllContentHere) {
|
|
mIsAllFramesHere = PR_FALSE;
|
|
mHasBeenInitialized = PR_FALSE;
|
|
} else {
|
|
mIsAllFramesHere = (aIndex == GetNumberOfOptions()-1);
|
|
}
|
|
}
|
|
|
|
if (!mHasBeenInitialized) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Make sure we scroll to the selected option as needed
|
|
mNeedToReset = PR_TRUE;
|
|
mPostChildrenLoadedReset = mIsAllContentHere;
|
|
return NS_OK;
|
|
}
|
|
|
|
//-------------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::RemoveOption(nsPresContext* aPresContext, PRInt32 aIndex)
|
|
{
|
|
// Need to reset if we're a dropdown
|
|
if (IsInDropDownMode()) {
|
|
mNeedToReset = PR_TRUE;
|
|
mPostChildrenLoadedReset = mIsAllContentHere;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Set the option selected in the DOM. This method is named
|
|
// as it is because it indicates that the frame is the source
|
|
// of this event rather than the receiver.
|
|
PRBool
|
|
nsListControlFrame::SetOptionsSelectedFromFrame(PRInt32 aStartIndex,
|
|
PRInt32 aEndIndex,
|
|
PRBool aValue,
|
|
PRBool aClearAll)
|
|
{
|
|
nsCOMPtr<nsISelectElement> selectElement(do_QueryInterface(mContent));
|
|
PRBool wasChanged = PR_FALSE;
|
|
nsresult rv = selectElement->SetOptionsSelectedByIndex(aStartIndex,
|
|
aEndIndex,
|
|
aValue,
|
|
aClearAll,
|
|
PR_FALSE,
|
|
PR_TRUE,
|
|
&wasChanged);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "SetSelected failed");
|
|
return wasChanged;
|
|
}
|
|
|
|
PRBool
|
|
nsListControlFrame::ToggleOptionSelectedFromFrame(PRInt32 aIndex)
|
|
{
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
NS_ASSERTION(options, "No options");
|
|
if (!options) {
|
|
return PR_FALSE;
|
|
}
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> option = GetOption(options, aIndex);
|
|
NS_ASSERTION(option, "No option");
|
|
if (!option) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool value = PR_FALSE;
|
|
nsresult rv = option->GetSelected(&value);
|
|
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "GetSelected failed");
|
|
nsCOMPtr<nsISelectElement> selectElement(do_QueryInterface(mContent));
|
|
PRBool wasChanged = PR_FALSE;
|
|
rv = selectElement->SetOptionsSelectedByIndex(aIndex,
|
|
aIndex,
|
|
!value,
|
|
PR_FALSE,
|
|
PR_FALSE,
|
|
PR_TRUE,
|
|
&wasChanged);
|
|
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "SetSelected failed");
|
|
|
|
return wasChanged;
|
|
}
|
|
|
|
|
|
// Dispatch event and such
|
|
void
|
|
nsListControlFrame::UpdateSelection()
|
|
{
|
|
if (mIsAllFramesHere) {
|
|
// if it's a combobox, display the new text
|
|
if (mComboboxFrame) {
|
|
mComboboxFrame->RedisplaySelectedText();
|
|
}
|
|
// if it's a listbox, fire on change
|
|
else if (mIsAllContentHere) {
|
|
FireOnChange();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::ComboboxFinish(PRInt32 aIndex)
|
|
{
|
|
gLastKeyTime = 0;
|
|
|
|
if (mComboboxFrame) {
|
|
PerformSelection(aIndex, PR_FALSE, PR_FALSE);
|
|
|
|
PRInt32 displayIndex = mComboboxFrame->GetIndexOfDisplayArea();
|
|
|
|
if (displayIndex != aIndex) {
|
|
mComboboxFrame->RedisplaySelectedText();
|
|
}
|
|
|
|
mComboboxFrame->RollupFromList();
|
|
}
|
|
}
|
|
|
|
// Send out an onchange notification.
|
|
void
|
|
nsListControlFrame::FireOnChange()
|
|
{
|
|
if (mComboboxFrame) {
|
|
// Return hit without changing anything
|
|
PRInt32 index = mComboboxFrame->UpdateRecentIndex(-1);
|
|
if (index == -1)
|
|
return;
|
|
|
|
// See if the selection actually changed
|
|
if (index == GetSelectedIndex())
|
|
return;
|
|
}
|
|
|
|
// Dispatch the NS_FORM_CHANGE event
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsEvent event(PR_TRUE, NS_FORM_CHANGE);
|
|
|
|
nsIPresShell *presShell = GetPresContext()->GetPresShell();
|
|
if (presShell) {
|
|
presShell->HandleEventWithTarget(&event, this, nsnull, &status);
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Determine if the specified item in the listbox is selected.
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::GetOptionSelected(PRInt32 aIndex, PRBool* aValue)
|
|
{
|
|
*aValue = IsContentSelectedByIndex(aIndex);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::OnSetSelectedIndex(PRInt32 aOldIndex, PRInt32 aNewIndex)
|
|
{
|
|
if (mComboboxFrame) {
|
|
// UpdateRecentIndex with -1, so that we won't fire an onchange
|
|
// event for this setting of selectedIndex.
|
|
mComboboxFrame->UpdateRecentIndex(-1);
|
|
}
|
|
|
|
ScrollToIndex(aNewIndex);
|
|
mStartSelectionIndex = aNewIndex;
|
|
mEndSelectionIndex = aNewIndex;
|
|
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent();
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// End nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
|
|
//---------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::SetFormProperty(nsIAtom* aName,
|
|
const nsAString& aValue)
|
|
{
|
|
if (nsHTMLAtoms::selected == aName) {
|
|
return NS_ERROR_INVALID_ARG; // Selected is readonly according to spec.
|
|
} else if (nsHTMLAtoms::selectedindex == aName) {
|
|
// You shouldn't be calling me for this!!!
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
// We should be told about selectedIndex by the DOM element through
|
|
// OnOptionSelected
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::GetFormProperty(nsIAtom* aName, nsAString& aValue) const
|
|
{
|
|
// Get the selected value of option from local cache (optimization vs. widget)
|
|
if (nsHTMLAtoms::selected == aName) {
|
|
nsAutoString val(aValue);
|
|
PRInt32 error = 0;
|
|
PRBool selected = PR_FALSE;
|
|
PRInt32 indx = val.ToInteger(&error, 10); // Get index from aValue
|
|
if (error == 0)
|
|
selected = IsContentSelectedByIndex(indx);
|
|
|
|
nsFormControlHelper::GetBoolString(selected, aValue);
|
|
|
|
// For selectedIndex, get the value from the widget
|
|
} else if (nsHTMLAtoms::selectedindex == aName) {
|
|
// You shouldn't be calling me for this!!!
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::SyncViewWithFrame()
|
|
{
|
|
// Resync the view's position with the frame.
|
|
// The problem is the dropdown's view is attached directly under
|
|
// the root view. This means its view needs to have its coordinates calculated
|
|
// as if it were in it's normal position in the view hierarchy.
|
|
mComboboxFrame->AbsolutelyPositionDropDown();
|
|
|
|
nsContainerFrame::PositionFrameView(this);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void
|
|
nsListControlFrame::AboutToDropDown()
|
|
{
|
|
if (mIsAllContentHere && mIsAllFramesHere && mHasBeenInitialized) {
|
|
ScrollToIndex(GetSelectedIndex());
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent(); // Inform assistive tech what got focus
|
|
#endif
|
|
}
|
|
mItemSelectionStarted = PR_FALSE;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// We are about to be rolledup from the outside (ComboboxFrame)
|
|
void
|
|
nsListControlFrame::AboutToRollup()
|
|
{
|
|
// We've been updating the combobox with the keyboard up until now, but not
|
|
// with the mouse. The problem is, even with mouse selection, we are
|
|
// updating the <select>. So if the mouse goes over an option just before
|
|
// he leaves the box and clicks, that's what the <select> will show.
|
|
//
|
|
// To deal with this we say "whatever is in the combobox is canonical."
|
|
// - IF the combobox is different from the current selected index, we
|
|
// reset the index.
|
|
|
|
if (IsInDropDownMode()) {
|
|
ComboboxFinish(mComboboxFrame->GetIndexOfDisplayArea());
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::DidReflow(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState* aReflowState,
|
|
nsDidReflowStatus aStatus)
|
|
{
|
|
nsresult rv;
|
|
|
|
if (IsInDropDownMode())
|
|
{
|
|
//SyncViewWithFrame();
|
|
rv = nsHTMLScrollFrame::DidReflow(aPresContext, aReflowState, aStatus);
|
|
SyncViewWithFrame();
|
|
} else {
|
|
rv = nsHTMLScrollFrame::DidReflow(aPresContext, aReflowState, aStatus);
|
|
}
|
|
|
|
if (mNeedToReset) {
|
|
mNeedToReset = PR_FALSE;
|
|
// Suppress scrolling to the selected element if we restored
|
|
// scroll history state AND the list contents have not changed
|
|
// since we loaded all the children AND nothing else forced us
|
|
// to scroll by calling ResetList(PR_TRUE). The latter two conditions
|
|
// are folded into mPostChildrenLoadedReset.
|
|
//
|
|
// The idea is that we want scroll history restoration to trump ResetList
|
|
// scrolling to the selected element, when the ResetList was probably only
|
|
// caused by content loading normally.
|
|
ResetList(!DidHistoryRestore() || mPostChildrenLoadedReset);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsIAtom*
|
|
nsListControlFrame::GetType() const
|
|
{
|
|
return nsLayoutAtoms::listControlFrame;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::GetFrameName(nsAString& aResult) const
|
|
{
|
|
return MakeFrameName(NS_LITERAL_STRING("ListControl"), aResult);
|
|
}
|
|
#endif
|
|
|
|
//---------------------------------------------------------
|
|
nsSize
|
|
nsListControlFrame::GetMaximumSize()
|
|
{
|
|
nsSize aSize;
|
|
aSize.width = mMaxWidth;
|
|
aSize.height = mMaxHeight;
|
|
return aSize;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::IsOptionDisabled(PRInt32 anIndex, PRBool &aIsDisabled)
|
|
{
|
|
nsCOMPtr<nsISelectElement> sel(do_QueryInterface(mContent));
|
|
if (sel) {
|
|
sel->IsOptionDisabled(anIndex, &aIsDisabled);
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// helper
|
|
//----------------------------------------------------------------------
|
|
PRBool
|
|
nsListControlFrame::IsLeftButton(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
// only allow selection with the left button
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
|
|
if (mouseEvent) {
|
|
PRUint16 whichButton;
|
|
if (NS_SUCCEEDED(mouseEvent->GetButton(&whichButton))) {
|
|
return whichButton != 0?PR_FALSE:PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
nscoord
|
|
nsListControlFrame::CalcFallbackRowHeight(PRInt32 aNumOptions)
|
|
{
|
|
const nsStyleFont* styleFont = nsnull;
|
|
|
|
if (aNumOptions > 0) {
|
|
// Try the first option
|
|
nsCOMPtr<nsIContent> option = GetOptionContent(0);
|
|
if (option) {
|
|
nsIFrame * optFrame = GetPresContext()->PresShell()->
|
|
GetPrimaryFrameFor(option);
|
|
if (optFrame) {
|
|
styleFont = optFrame->GetStyleFont();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!styleFont) {
|
|
// Fall back to our own font
|
|
styleFont = GetStyleFont();
|
|
}
|
|
|
|
NS_ASSERTION(styleFont, "Must have font style by now!");
|
|
|
|
nscoord rowHeight = 0;
|
|
|
|
nsCOMPtr<nsIFontMetrics> fontMet;
|
|
nsresult result = GetPresContext()->DeviceContext()->
|
|
GetMetricsFor(styleFont->mFont, *getter_AddRefs(fontMet));
|
|
if (NS_SUCCEEDED(result) && fontMet) {
|
|
if (fontMet) {
|
|
fontMet->GetHeight(rowHeight);
|
|
}
|
|
}
|
|
|
|
return rowHeight;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIDOMMouseListener
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::MouseUp(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
NS_ASSERTION(aMouseEvent != nsnull, "aMouseEvent is null.");
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
REFLOW_DEBUG_MSG("--------------------------- MouseUp ----------------------------\n");
|
|
|
|
mButtonDown = PR_FALSE;
|
|
|
|
if (nsFormControlHelper::GetDisabled(mContent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// only allow selection with the left button
|
|
// if a right button click is on the combobox itself
|
|
// or on the select when in listbox mode, then let the click through
|
|
if (!IsLeftButton(aMouseEvent)) {
|
|
if (IsInDropDownMode()) {
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
} else {
|
|
CaptureMouseEvents(PR_FALSE);
|
|
return NS_OK;
|
|
}
|
|
CaptureMouseEvents(PR_FALSE);
|
|
return NS_ERROR_FAILURE; // means consume event
|
|
} else {
|
|
CaptureMouseEvents(PR_FALSE);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
const nsStyleVisibility* vis = GetStyleVisibility();
|
|
|
|
if (!vis->IsVisible()) {
|
|
REFLOW_DEBUG_MSG(">>>>>> Select is NOT visible");
|
|
return NS_OK;
|
|
}
|
|
|
|
if (IsInDropDownMode()) {
|
|
// XXX This is a bit of a hack, but.....
|
|
// But the idea here is to make sure you get an "onclick" event when you mouse
|
|
// down on the select and the drag over an option and let go
|
|
// And then NOT get an "onclick" event when when you click down on the select
|
|
// and then up outside of the select
|
|
// the EventStateManager tracks the content of the mouse down and the mouse up
|
|
// to make sure they are the same, and the onclick is sent in the PostHandleEvent
|
|
// depeneding on whether the clickCount is non-zero.
|
|
// So we cheat here by either setting or unsetting the clcikCount in the native event
|
|
// so the right thing happens for the onclick event
|
|
nsCOMPtr<nsIPrivateDOMEvent> privateEvent(do_QueryInterface(aMouseEvent));
|
|
nsMouseEvent * mouseEvent;
|
|
privateEvent->GetInternalNSEvent((nsEvent**)&mouseEvent);
|
|
|
|
PRInt32 selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
REFLOW_DEBUG_MSG2(">>>>>> Found Index: %d", selectedIndex);
|
|
|
|
// If it's disabled, disallow the click and leave.
|
|
PRBool isDisabled = PR_FALSE;
|
|
IsOptionDisabled(selectedIndex, isDisabled);
|
|
if (isDisabled) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
CaptureMouseEvents(PR_FALSE);
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (kNothingSelected != selectedIndex) {
|
|
ComboboxFinish(selectedIndex);
|
|
FireOnChange();
|
|
}
|
|
|
|
mouseEvent->clickCount = 1;
|
|
} else {
|
|
// the click was out side of the select or its dropdown
|
|
mouseEvent->clickCount = IgnoreMouseEventForSelection(aMouseEvent) ? 1 : 0;
|
|
}
|
|
} else {
|
|
REFLOW_DEBUG_MSG(">>>>>> Didn't find");
|
|
CaptureMouseEvents(PR_FALSE);
|
|
// Notify
|
|
if (mChangesSinceDragStart) {
|
|
// reset this so that future MouseUps without a prior MouseDown
|
|
// won't fire onchange
|
|
mChangesSinceDragStart = PR_FALSE;
|
|
FireOnChange();
|
|
}
|
|
#if 0 // XXX - this is a partial fix for Bug 29990
|
|
if (mSelectedIndex != mStartExtendedIndex) {
|
|
mEndExtendedIndex = mSelectedIndex;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* If the dropdown is showing and the mouse has moved below our
|
|
* border-inner-edge, then set mItemSelectionStarted.
|
|
*/
|
|
void
|
|
nsListControlFrame::UpdateInListState(nsIDOMEvent* aEvent)
|
|
{
|
|
if (!mComboboxFrame || !mComboboxFrame->IsDroppedDown())
|
|
return;
|
|
|
|
nsPoint pt = nsLayoutUtils::GetDOMEventCoordinatesRelativeTo(aEvent, this);
|
|
nsRect borderInnerEdge = GetScrollableView()->View()->GetBounds();
|
|
if (pt.y >= borderInnerEdge.y && pt.y < borderInnerEdge.YMost()) {
|
|
mItemSelectionStarted = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* When the user clicks on the comboboxframe to show the dropdown
|
|
* listbox, they then have to move the mouse into the list. We don't
|
|
* want to process those mouse events as selection events (i.e., to
|
|
* scroll list items into view). So we ignore the events until
|
|
* the mouse moves below our border-inner-edge, when
|
|
* mItemSelectionStarted is set.
|
|
*
|
|
* @param aPoint relative to this frame
|
|
*/
|
|
PRBool nsListControlFrame::IgnoreMouseEventForSelection(nsIDOMEvent* aEvent)
|
|
{
|
|
if (!mComboboxFrame)
|
|
return PR_FALSE;
|
|
|
|
// Our DOM listener does get called when the dropdown is not
|
|
// showing, because it listens to events on the SELECT element
|
|
if (!mComboboxFrame->IsDroppedDown())
|
|
return PR_TRUE;
|
|
|
|
return !mItemSelectionStarted;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Fire a custom DOM event for the change, so that accessibility can
|
|
// fire a native focus event for accessibility
|
|
// (Some 3rd party products need to track our focus)
|
|
#ifdef ACCESSIBILITY
|
|
void
|
|
nsListControlFrame::FireMenuItemActiveEvent()
|
|
{
|
|
if (mFocused != this && !IsInDropDownMode()) {
|
|
return;
|
|
}
|
|
|
|
// The mEndSelectionIndex is what is currently being selected
|
|
// use the selected index if this is kNothingSelected
|
|
PRInt32 focusedIndex;
|
|
if (mEndSelectionIndex == kNothingSelected) {
|
|
focusedIndex = GetSelectedIndex();
|
|
} else {
|
|
focusedIndex = mEndSelectionIndex;
|
|
}
|
|
if (focusedIndex == kNothingSelected) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> optionContent = GetOptionContent(focusedIndex);
|
|
if (!optionContent) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMEvent> event;
|
|
nsPresContext* presContext = GetPresContext();
|
|
nsEventDispatcher::CreateEvent(presContext, nsnull,
|
|
NS_LITERAL_STRING("Events"),
|
|
getter_AddRefs(event));
|
|
if (event) {
|
|
event->InitEvent(NS_LITERAL_STRING("DOMMenuItemActive"), PR_TRUE, PR_TRUE);
|
|
|
|
nsCOMPtr<nsIPrivateDOMEvent> privateEvent(do_QueryInterface(event));
|
|
privateEvent->SetTrusted(PR_TRUE);
|
|
|
|
nsEventDispatcher::DispatchDOMEvent(optionContent, nsnull, event, nsnull,
|
|
nsnull);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
//----------------------------------------------------------------------
|
|
// Sets the mSelectedIndex and mOldSelectedIndex from figuring out what
|
|
// item was selected using content
|
|
// @param aPoint the event point, in listcontrolframe coordinates
|
|
// @return NS_OK if it successfully found the selection
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::GetIndexFromDOMEvent(nsIDOMEvent* aMouseEvent,
|
|
PRInt32& aCurIndex)
|
|
{
|
|
if (IgnoreMouseEventForSelection(aMouseEvent))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIView* view = GetScrolledFrame()->GetView();
|
|
nsIViewManager* viewMan = view->GetViewManager();
|
|
nsIView* curGrabber;
|
|
viewMan->GetMouseEventGrabber(curGrabber);
|
|
if (curGrabber != view) {
|
|
// If we're not capturing, then ignore movement in the border
|
|
nsPoint pt = nsLayoutUtils::GetDOMEventCoordinatesRelativeTo(aMouseEvent, this);
|
|
nsRect borderInnerEdge = GetScrollableView()->View()->GetBounds();
|
|
if (!borderInnerEdge.Contains(pt)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
GetPresContext()->EventStateManager()->
|
|
GetEventTargetContent(nsnull, getter_AddRefs(content));
|
|
|
|
nsCOMPtr<nsIContent> optionContent = GetOptionFromContent(content);
|
|
if (optionContent) {
|
|
aCurIndex = GetIndexFromContent(optionContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIPresShell *presShell = GetPresContext()->PresShell();
|
|
PRInt32 numOptions = GetNumberOfOptions();
|
|
if (numOptions < 1)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsPoint pt = nsLayoutUtils::GetDOMEventCoordinatesRelativeTo(aMouseEvent, this);
|
|
|
|
// If the event coordinate is above the first option frame, then target the
|
|
// first option frame
|
|
nsCOMPtr<nsIContent> firstOption = GetOptionContent(0);
|
|
NS_ASSERTION(firstOption, "Can't find first option that's supposed to be there");
|
|
nsIFrame* optionFrame = presShell->GetPrimaryFrameFor(firstOption);
|
|
if (optionFrame) {
|
|
nsPoint ptInOptionFrame = pt - optionFrame->GetOffsetTo(this);
|
|
if (ptInOptionFrame.y < 0 && ptInOptionFrame.x >= 0 &&
|
|
ptInOptionFrame.x < optionFrame->GetSize().width) {
|
|
aCurIndex = 0;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> lastOption = GetOptionContent(numOptions - 1);
|
|
// If the event coordinate is below the last option frame, then target the
|
|
// last option frame
|
|
NS_ASSERTION(lastOption, "Can't find last option that's supposed to be there");
|
|
optionFrame = presShell->GetPrimaryFrameFor(lastOption);
|
|
if (optionFrame) {
|
|
nsPoint ptInOptionFrame = pt - optionFrame->GetOffsetTo(this);
|
|
if (ptInOptionFrame.y >= optionFrame->GetSize().height && ptInOptionFrame.x >= 0 &&
|
|
ptInOptionFrame.x < optionFrame->GetSize().width) {
|
|
aCurIndex = numOptions - 1;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::MouseDown(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
NS_ASSERTION(aMouseEvent != nsnull, "aMouseEvent is null.");
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
REFLOW_DEBUG_MSG("--------------------------- MouseDown ----------------------------\n");
|
|
|
|
mButtonDown = PR_TRUE;
|
|
|
|
if (nsFormControlHelper::GetDisabled(mContent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// only allow selection with the left button
|
|
// if a right button click is on the combobox itself
|
|
// or on the select when in listbox mode, then let the click through
|
|
if (!IsLeftButton(aMouseEvent)) {
|
|
if (IsInDropDownMode()) {
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
} else {
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_FAILURE; // means consume event
|
|
} else {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
PRInt32 selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// Handle Like List
|
|
CaptureMouseEvents(PR_TRUE);
|
|
mChangesSinceDragStart = HandleListSelection(aMouseEvent, selectedIndex);
|
|
#ifdef ACCESSIBILITY
|
|
if (mChangesSinceDragStart) {
|
|
FireMenuItemActiveEvent();
|
|
}
|
|
#endif
|
|
} else {
|
|
// NOTE: the combo box is responsible for dropping it down
|
|
if (mComboboxFrame) {
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsComboboxControlFrame::ToolkitHasNativePopup())
|
|
{
|
|
PRBool isDroppedDown = mComboboxFrame->IsDroppedDown();
|
|
mComboboxFrame->ShowDropDown(!isDroppedDown);
|
|
if (isDroppedDown) {
|
|
CaptureMouseEvents(PR_FALSE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIDOMMouseMotionListener
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::MouseMove(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
NS_ASSERTION(aMouseEvent, "aMouseEvent is null.");
|
|
//REFLOW_DEBUG_MSG("MouseMove\n");
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
if (IsInDropDownMode()) {
|
|
if (mComboboxFrame->IsDroppedDown()) {
|
|
PRInt32 selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
PerformSelection(selectedIndex, PR_FALSE, PR_FALSE);
|
|
}
|
|
|
|
// Make sure the SelectArea frame gets painted
|
|
// XXX this shouldn't be needed, but other places in this code do it
|
|
// and if we don't do this, invalidation doesn't happen when we move out
|
|
// of the top-level window. We should track this down and fix it --- roc
|
|
Invalidate(nsRect(0,0,mRect.width,mRect.height), PR_TRUE);
|
|
}
|
|
} else {// XXX - temporary until we get drag events
|
|
if (mButtonDown) {
|
|
return DragMove(aMouseEvent);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::DragMove(nsIDOMEvent* aMouseEvent)
|
|
{
|
|
NS_ASSERTION(aMouseEvent, "aMouseEvent is null.");
|
|
//REFLOW_DEBUG_MSG("DragMove\n");
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
if (!IsInDropDownMode()) {
|
|
PRInt32 selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// Don't waste cycles if we already dragged over this item
|
|
if (selectedIndex == mEndSelectionIndex) {
|
|
return NS_OK;
|
|
}
|
|
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
|
|
NS_ASSERTION(mouseEvent, "aMouseEvent is not an nsIDOMMouseEvent!");
|
|
PRBool isControl;
|
|
#if defined(XP_MAC) || defined(XP_MACOSX)
|
|
mouseEvent->GetMetaKey(&isControl);
|
|
#else
|
|
mouseEvent->GetCtrlKey(&isControl);
|
|
#endif
|
|
// Turn SHIFT on when you are dragging, unless control is on.
|
|
PRBool wasChanged = PerformSelection(selectedIndex,
|
|
!isControl, isControl);
|
|
mChangesSinceDragStart = mChangesSinceDragStart || wasChanged;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::ScrollToIndex(PRInt32 aIndex)
|
|
{
|
|
if (aIndex < 0) {
|
|
// XXX shouldn't we just do nothing if we're asked to scroll to
|
|
// kNothingSelected?
|
|
return ScrollToFrame(nsnull);
|
|
} else {
|
|
nsCOMPtr<nsIContent> content = GetOptionContent(aIndex);
|
|
if (content) {
|
|
return ScrollToFrame(content);
|
|
}
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
nsListControlFrame::ScrollToFrame(nsIContent* aOptElement)
|
|
{
|
|
nsIScrollableView* scrollableView = GetScrollableView();
|
|
|
|
if (scrollableView) {
|
|
// if null is passed in we scroll to 0,0
|
|
if (nsnull == aOptElement) {
|
|
scrollableView->ScrollTo(0, 0, PR_TRUE);
|
|
return NS_OK;
|
|
}
|
|
|
|
// otherwise we find the content's frame and scroll to it
|
|
nsIPresShell *presShell = GetPresContext()->PresShell();
|
|
nsIFrame * childframe;
|
|
if (aOptElement) {
|
|
childframe = presShell->GetPrimaryFrameFor(aOptElement);
|
|
} else {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (childframe) {
|
|
if (scrollableView) {
|
|
nscoord x;
|
|
nscoord y;
|
|
scrollableView->GetScrollPosition(x,y);
|
|
// get the clipped rect
|
|
nsRect rect = scrollableView->View()->GetBounds();
|
|
// now move it by the offset of the scroll position
|
|
rect.x = x;
|
|
rect.y = y;
|
|
|
|
// get the child
|
|
nsRect fRect = childframe->GetRect();
|
|
nsPoint pnt;
|
|
nsIView * view;
|
|
childframe->GetOffsetFromView(pnt, &view);
|
|
|
|
// This change for 33421 (remove this comment later)
|
|
|
|
// options can be a child of an optgroup
|
|
// this checks to see the parent is an optgroup
|
|
// and then adds in the parent's y coord
|
|
// XXX this assume only one level of nesting of optgroups
|
|
// which is all the spec specifies at the moment.
|
|
nsCOMPtr<nsIContent> parentContent = aOptElement->GetParent();
|
|
nsCOMPtr<nsIDOMHTMLOptGroupElement> optGroup(do_QueryInterface(parentContent));
|
|
nsRect optRect(0,0,0,0);
|
|
if (optGroup) {
|
|
nsIFrame * optFrame = presShell->GetPrimaryFrameFor(parentContent);
|
|
if (optFrame) {
|
|
optRect = optFrame->GetRect();
|
|
}
|
|
}
|
|
fRect.y += optRect.y;
|
|
|
|
// See if the selected frame (fRect) is inside the scrolled
|
|
// area (rect). Check only the vertical dimension. Don't
|
|
// scroll just because there's horizontal overflow.
|
|
if (!(rect.y <= fRect.y && fRect.YMost() <= rect.YMost())) {
|
|
// figure out which direction we are going
|
|
if (fRect.YMost() > rect.YMost()) {
|
|
y = fRect.y-(rect.height-fRect.height);
|
|
} else {
|
|
y = fRect.y;
|
|
}
|
|
scrollableView->ScrollTo(pnt.x, y, PR_TRUE);
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------------------
|
|
// Ok, the entire idea of this routine is to move to the next item that
|
|
// is suppose to be selected. If the item is disabled then we search in
|
|
// the same direction looking for the next item to select. If we run off
|
|
// the end of the list then we start at the end of the list and search
|
|
// backwards until we get back to the original item or an enabled option
|
|
//
|
|
// aStartIndex - the index to start searching from
|
|
// aNewIndex - will get set to the new index if it finds one
|
|
// aNumOptions - the total number of options in the list
|
|
// aDoAdjustInc - the initial increment 1-n
|
|
// aDoAdjustIncNext - the increment used to search for the next enabled option
|
|
//
|
|
// the aDoAdjustInc could be a "1" for a single item or
|
|
// any number greater representing a page of items
|
|
//
|
|
void
|
|
nsListControlFrame::AdjustIndexForDisabledOpt(PRInt32 aStartIndex,
|
|
PRInt32 &aNewIndex,
|
|
PRInt32 aNumOptions,
|
|
PRInt32 aDoAdjustInc,
|
|
PRInt32 aDoAdjustIncNext)
|
|
{
|
|
// Cannot select anything if there is nothing to select
|
|
if (aNumOptions == 0) {
|
|
aNewIndex = kNothingSelected;
|
|
return;
|
|
}
|
|
|
|
// means we reached the end of the list and now we are searching backwards
|
|
PRBool doingReverse = PR_FALSE;
|
|
// lowest index in the search range
|
|
PRInt32 bottom = 0;
|
|
// highest index in the search range
|
|
PRInt32 top = aNumOptions;
|
|
|
|
// Start off keyboard options at selectedIndex if nothing else is defaulted to
|
|
//
|
|
// XXX Perhaps this should happen for mouse too, to start off shift click
|
|
// automatically in multiple ... to do this, we'd need to override
|
|
// OnOptionSelected and set mStartSelectedIndex if nothing is selected. Not
|
|
// sure of the effects, though, so I'm not doing it just yet.
|
|
PRInt32 startIndex = aStartIndex;
|
|
if (startIndex < bottom) {
|
|
startIndex = GetSelectedIndex();
|
|
}
|
|
PRInt32 newIndex = startIndex + aDoAdjustInc;
|
|
|
|
// make sure we start off in the range
|
|
if (newIndex < bottom) {
|
|
newIndex = 0;
|
|
} else if (newIndex >= top) {
|
|
newIndex = aNumOptions-1;
|
|
}
|
|
|
|
while (1) {
|
|
// if the newIndex isn't disabled, we are golden, bail out
|
|
PRBool isDisabled = PR_TRUE;
|
|
if (NS_SUCCEEDED(IsOptionDisabled(newIndex, isDisabled)) && !isDisabled) {
|
|
break;
|
|
}
|
|
|
|
// it WAS disabled, so sart looking ahead for the next enabled option
|
|
newIndex += aDoAdjustIncNext;
|
|
|
|
// well, if we reach end reverse the search
|
|
if (newIndex < bottom) {
|
|
if (doingReverse) {
|
|
return; // if we are in reverse mode and reach the end bail out
|
|
} else {
|
|
// reset the newIndex to the end of the list we hit
|
|
// reverse the incrementer
|
|
// set the other end of the list to our original starting index
|
|
newIndex = bottom;
|
|
aDoAdjustIncNext = 1;
|
|
doingReverse = PR_TRUE;
|
|
top = startIndex;
|
|
}
|
|
} else if (newIndex >= top) {
|
|
if (doingReverse) {
|
|
return; // if we are in reverse mode and reach the end bail out
|
|
} else {
|
|
// reset the newIndex to the end of the list we hit
|
|
// reverse the incrementer
|
|
// set the other end of the list to our original starting index
|
|
newIndex = top - 1;
|
|
aDoAdjustIncNext = -1;
|
|
doingReverse = PR_TRUE;
|
|
bottom = startIndex;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Looks like we found one
|
|
aNewIndex = newIndex;
|
|
}
|
|
|
|
nsAString&
|
|
nsListControlFrame::GetIncrementalString()
|
|
{
|
|
static nsString incrementalString;
|
|
return incrementalString;
|
|
}
|
|
|
|
void
|
|
nsListControlFrame::DropDownToggleKey(nsIDOMEvent* aKeyEvent)
|
|
{
|
|
// Cocoa widgets do native popups, so don't try to show
|
|
// dropdowns there.
|
|
if (IsInDropDownMode() && !nsComboboxControlFrame::ToolkitHasNativePopup()) {
|
|
mComboboxFrame->ShowDropDown(!mComboboxFrame->IsDroppedDown());
|
|
mComboboxFrame->RedisplaySelectedText();
|
|
aKeyEvent->PreventDefault();
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsListControlFrame::KeyPress(nsIDOMEvent* aKeyEvent)
|
|
{
|
|
NS_ASSERTION(aKeyEvent, "keyEvent is null.");
|
|
|
|
if (nsFormControlHelper::GetDisabled(mContent))
|
|
return NS_OK;
|
|
|
|
// Start by making sure we can query for a key event
|
|
nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aKeyEvent);
|
|
NS_ENSURE_TRUE(keyEvent, NS_ERROR_FAILURE);
|
|
|
|
PRUint32 keycode = 0;
|
|
PRUint32 charcode = 0;
|
|
keyEvent->GetKeyCode(&keycode);
|
|
keyEvent->GetCharCode(&charcode);
|
|
#ifdef DO_REFLOW_DEBUG
|
|
if (charcode >= 32) {
|
|
REFLOW_DEBUG_MSG3("KeyCode: %c %d\n", charcode, charcode);
|
|
}
|
|
#endif
|
|
|
|
PRBool isAlt = PR_FALSE;
|
|
|
|
keyEvent->GetAltKey(&isAlt);
|
|
if (isAlt) {
|
|
if (keycode == nsIDOMKeyEvent::DOM_VK_UP || keycode == nsIDOMKeyEvent::DOM_VK_DOWN) {
|
|
DropDownToggleKey(aKeyEvent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Get control / shift modifiers
|
|
PRBool isControl = PR_FALSE;
|
|
PRBool isShift = PR_FALSE;
|
|
keyEvent->GetCtrlKey(&isControl);
|
|
if (!isControl) {
|
|
keyEvent->GetMetaKey(&isControl);
|
|
}
|
|
keyEvent->GetShiftKey(&isShift);
|
|
|
|
// now make sure there are options or we are wasting our time
|
|
nsCOMPtr<nsIDOMHTMLOptionsCollection> options = GetOptions(mContent);
|
|
NS_ENSURE_TRUE(options, NS_ERROR_FAILURE);
|
|
|
|
PRUint32 numOptions = 0;
|
|
options->GetLength(&numOptions);
|
|
|
|
// Whether we did an incremental search or another action
|
|
PRBool didIncrementalSearch = PR_FALSE;
|
|
|
|
// this is the new index to set
|
|
// DOM_VK_RETURN & DOM_VK_ESCAPE will not set this
|
|
PRInt32 newIndex = kNothingSelected;
|
|
|
|
// set up the old and new selected index and process it
|
|
// DOM_VK_RETURN selects the item
|
|
// DOM_VK_ESCAPE cancels the selection
|
|
// default processing checks to see if the pressed the first
|
|
// letter of an item in the list and advances to it
|
|
|
|
if (isControl && (keycode == nsIDOMKeyEvent::DOM_VK_UP ||
|
|
keycode == nsIDOMKeyEvent::DOM_VK_LEFT ||
|
|
keycode == nsIDOMKeyEvent::DOM_VK_DOWN ||
|
|
keycode == nsIDOMKeyEvent::DOM_VK_RIGHT)) {
|
|
// Don't go into multiple select mode unless this list can handle it
|
|
isControl = mControlSelectMode = GetMultiple();
|
|
} else if (charcode != ' ') {
|
|
mControlSelectMode = PR_FALSE;
|
|
}
|
|
switch (keycode) {
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_UP:
|
|
case nsIDOMKeyEvent::DOM_VK_LEFT: {
|
|
REFLOW_DEBUG_MSG2("DOM_VK_UP mEndSelectionIndex: %d ",
|
|
mEndSelectionIndex);
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
(PRInt32)numOptions,
|
|
-1, -1);
|
|
REFLOW_DEBUG_MSG2(" After: %d\n", newIndex);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_DOWN:
|
|
case nsIDOMKeyEvent::DOM_VK_RIGHT: {
|
|
REFLOW_DEBUG_MSG2("DOM_VK_DOWN mEndSelectionIndex: %d ",
|
|
mEndSelectionIndex);
|
|
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
(PRInt32)numOptions,
|
|
1, 1);
|
|
REFLOW_DEBUG_MSG2(" After: %d\n", newIndex);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_RETURN: {
|
|
if (mComboboxFrame != nsnull) {
|
|
if (mComboboxFrame->IsDroppedDown()) {
|
|
ComboboxFinish(mEndSelectionIndex);
|
|
}
|
|
FireOnChange();
|
|
return NS_OK;
|
|
} else {
|
|
newIndex = mEndSelectionIndex;
|
|
}
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_ESCAPE: {
|
|
AboutToRollup();
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_PAGE_UP: {
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
(PRInt32)numOptions,
|
|
-(mNumDisplayRows-1), -1);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_PAGE_DOWN: {
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
(PRInt32)numOptions,
|
|
(mNumDisplayRows-1), 1);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_HOME: {
|
|
AdjustIndexForDisabledOpt(0, newIndex,
|
|
(PRInt32)numOptions,
|
|
0, 1);
|
|
} break;
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_END: {
|
|
AdjustIndexForDisabledOpt(numOptions-1, newIndex,
|
|
(PRInt32)numOptions,
|
|
0, -1);
|
|
} break;
|
|
|
|
#if defined(XP_WIN) || defined(XP_OS2)
|
|
case nsIDOMKeyEvent::DOM_VK_F4: {
|
|
DropDownToggleKey(aKeyEvent);
|
|
return NS_OK;
|
|
} break;
|
|
#endif
|
|
|
|
case nsIDOMKeyEvent::DOM_VK_TAB: {
|
|
return NS_OK;
|
|
}
|
|
|
|
default: { // Select option with this as the first character
|
|
// XXX Not I18N compliant
|
|
|
|
if (isControl && charcode != ' ') {
|
|
return NS_OK;
|
|
}
|
|
|
|
didIncrementalSearch = PR_TRUE;
|
|
if (charcode == 0) {
|
|
// Backspace key will delete the last char in the string
|
|
if (keycode == NS_VK_BACK && !GetIncrementalString().IsEmpty()) {
|
|
GetIncrementalString().Truncate(GetIncrementalString().Length() - 1);
|
|
aKeyEvent->PreventDefault();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
DOMTimeStamp keyTime;
|
|
aKeyEvent->GetTimeStamp(&keyTime);
|
|
|
|
// Incremental Search: if time elapsed is below
|
|
// INCREMENTAL_SEARCH_KEYPRESS_TIME, append this keystroke to the search
|
|
// string we will use to find options and start searching at the current
|
|
// keystroke. Otherwise, Truncate the string if it's been a long time
|
|
// since our last keypress.
|
|
if (keyTime - gLastKeyTime > INCREMENTAL_SEARCH_KEYPRESS_TIME) {
|
|
// If this is ' ' and we are at the beginning of the string, treat it as
|
|
// "select this option" (bug 191543)
|
|
if (charcode == ' ') {
|
|
newIndex = mEndSelectionIndex;
|
|
break;
|
|
}
|
|
GetIncrementalString().Truncate();
|
|
}
|
|
gLastKeyTime = keyTime;
|
|
|
|
// Append this keystroke to the search string.
|
|
PRUnichar uniChar = ToLowerCase(NS_STATIC_CAST(PRUnichar, charcode));
|
|
GetIncrementalString().Append(uniChar);
|
|
|
|
// See bug 188199, if all letters in incremental string are same, just try to match the first one
|
|
nsAutoString incrementalString(GetIncrementalString());
|
|
PRUint32 charIndex = 1, stringLength = incrementalString.Length();
|
|
while (charIndex < stringLength && incrementalString[charIndex] == incrementalString[charIndex - 1]) {
|
|
charIndex++;
|
|
}
|
|
if (charIndex == stringLength) {
|
|
incrementalString.Truncate(1);
|
|
stringLength = 1;
|
|
}
|
|
|
|
// Determine where we're going to start reading the string
|
|
// If we have multiple characters to look for, we start looking *at* the
|
|
// current option. If we have only one character to look for, we start
|
|
// looking *after* the current option.
|
|
// Exception: if there is no option selected to start at, we always start
|
|
// *at* 0.
|
|
PRInt32 startIndex = GetSelectedIndex();
|
|
if (startIndex == kNothingSelected) {
|
|
startIndex = 0;
|
|
} else if (stringLength == 1) {
|
|
startIndex++;
|
|
}
|
|
|
|
PRUint32 i;
|
|
for (i = 0; i < numOptions; i++) {
|
|
PRUint32 index = (i + startIndex) % numOptions;
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optionElement =
|
|
GetOption(options, index);
|
|
if (optionElement) {
|
|
nsAutoString text;
|
|
if (NS_OK == optionElement->GetText(text)) {
|
|
if (StringBeginsWith(text, incrementalString,
|
|
nsCaseInsensitiveStringComparator())) {
|
|
PRBool wasChanged = PerformSelection(index, isShift, isControl);
|
|
if (wasChanged) {
|
|
UpdateSelection(); // dispatch event, update combobox, etc.
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} // for
|
|
|
|
} break;//case
|
|
} // switch
|
|
|
|
// We ate the key if we got this far.
|
|
aKeyEvent->PreventDefault();
|
|
|
|
// If we didn't do an incremental search, clear the string
|
|
if (!didIncrementalSearch) {
|
|
GetIncrementalString().Truncate();
|
|
}
|
|
|
|
// Actually process the new index and let the selection code
|
|
// do the scrolling for us
|
|
if (newIndex != kNothingSelected) {
|
|
// If you hold control, no key will actually do anything except space.
|
|
PRBool wasChanged = PR_FALSE;
|
|
if (isControl && charcode != ' ') {
|
|
mStartSelectionIndex = newIndex;
|
|
mEndSelectionIndex = newIndex;
|
|
ScrollToIndex(newIndex);
|
|
} else if (mControlSelectMode && charcode == ' ') {
|
|
wasChanged = SingleSelection(newIndex, PR_TRUE);
|
|
} else {
|
|
wasChanged = PerformSelection(newIndex, isShift, isControl);
|
|
}
|
|
if (wasChanged) {
|
|
UpdateSelection(); // dispatch event, update combobox, etc.
|
|
}
|
|
#ifdef ACCESSIBILITY
|
|
if (charcode != ' ') {
|
|
FireMenuItemActiveEvent();
|
|
}
|
|
#endif
|
|
|
|
// XXX - Are we cover up a problem here???
|
|
// Why aren't they getting flushed each time?
|
|
// because this isn't needed for Gfx
|
|
if (IsInDropDownMode()) {
|
|
// Don't flush anything but reflows lest it destroy us
|
|
GetPresContext()->PresShell()->
|
|
GetDocument()->FlushPendingNotifications(Flush_OnlyReflow);
|
|
}
|
|
REFLOW_DEBUG_MSG2(" After: %d\n", newIndex);
|
|
|
|
// Make sure the SelectArea frame gets painted
|
|
Invalidate(nsRect(0,0,mRect.width,mRect.height), PR_TRUE);
|
|
|
|
} else {
|
|
REFLOW_DEBUG_MSG(" After: SKIPPED it\n");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
* nsListEventListener
|
|
*****************************************************************************/
|
|
|
|
NS_IMPL_ADDREF(nsListEventListener)
|
|
NS_IMPL_RELEASE(nsListEventListener)
|
|
NS_INTERFACE_MAP_BEGIN(nsListEventListener)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMMouseListener)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMMouseMotionListener)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMKeyListener)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIDOMEventListener, nsIDOMMouseListener)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMMouseListener)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
#define FORWARD_EVENT(_event) \
|
|
NS_IMETHODIMP \
|
|
nsListEventListener::_event(nsIDOMEvent* aEvent) \
|
|
{ \
|
|
if (mFrame) \
|
|
return mFrame->nsListControlFrame::_event(aEvent); \
|
|
return NS_OK; \
|
|
}
|
|
|
|
#define IGNORE_EVENT(_event) \
|
|
NS_IMETHODIMP \
|
|
nsListEventListener::_event(nsIDOMEvent* aEvent) \
|
|
{ return NS_OK; }
|
|
|
|
IGNORE_EVENT(HandleEvent)
|
|
|
|
/*================== nsIDOMKeyListener =========================*/
|
|
|
|
IGNORE_EVENT(KeyDown)
|
|
IGNORE_EVENT(KeyUp)
|
|
FORWARD_EVENT(KeyPress)
|
|
|
|
/*=============== nsIDOMMouseListener ======================*/
|
|
|
|
FORWARD_EVENT(MouseDown)
|
|
FORWARD_EVENT(MouseUp)
|
|
IGNORE_EVENT(MouseClick)
|
|
IGNORE_EVENT(MouseDblClick)
|
|
IGNORE_EVENT(MouseOver)
|
|
IGNORE_EVENT(MouseOut)
|
|
|
|
/*=============== nsIDOMMouseMotionListener ======================*/
|
|
|
|
FORWARD_EVENT(MouseMove)
|
|
// XXXbryner does anyone call this, ever?
|
|
IGNORE_EVENT(DragMove)
|
|
|
|
#undef FORWARD_EVENT
|
|
#undef IGNORE_EVENT
|
|
|