LCOV - code coverage report
Current view: directory - layout/xul/base/src - nsScrollBoxFrame.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 56 0 0.0 %
Date: 2012-06-02 Functions: 16 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Author: Eric D Vaughan <evaughan@netscape.com>
      24                 :  *   Pierre Phaneuf <pp@ludusdesign.com>
      25                 :  *   Dan Rosen <dr@netscape.com>
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      29                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : #include "nsCOMPtr.h"
      42                 : #include "nsPresContext.h"
      43                 : #include "nsGkAtoms.h"
      44                 : #include "nsGUIEvent.h"
      45                 : #include "nsButtonBoxFrame.h"
      46                 : #include "nsITimer.h"
      47                 : #include "nsRepeatService.h"
      48                 : 
      49                 : class nsAutoRepeatBoxFrame : public nsButtonBoxFrame
      50               0 : {
      51                 : public:
      52                 :   NS_DECL_FRAMEARENA_HELPERS
      53                 : 
      54                 :   friend nsIFrame* NS_NewAutoRepeatBoxFrame(nsIPresShell* aPresShell,
      55                 :                                             nsStyleContext* aContext);
      56                 : 
      57                 :   virtual void DestroyFrom(nsIFrame* aDestructRoot);
      58                 : 
      59                 :   NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
      60                 :                               nsIAtom* aAttribute,
      61                 :                               PRInt32 aModType);
      62                 : 
      63                 :   NS_IMETHOD HandleEvent(nsPresContext* aPresContext, 
      64                 :                          nsGUIEvent* aEvent,
      65                 :                          nsEventStatus* aEventStatus);
      66                 : 
      67                 :   NS_IMETHOD HandlePress(nsPresContext* aPresContext, 
      68                 :                          nsGUIEvent*     aEvent,
      69                 :                          nsEventStatus*  aEventStatus);
      70                 : 
      71                 :   NS_IMETHOD HandleRelease(nsPresContext* aPresContext, 
      72                 :                            nsGUIEvent*     aEvent,
      73                 :                            nsEventStatus*  aEventStatus);
      74                 : 
      75                 : protected:
      76               0 :   nsAutoRepeatBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext):
      77               0 :     nsButtonBoxFrame(aPresShell, aContext) {}
      78                 :   
      79               0 :   void StartRepeat() {
      80               0 :     if (IsActivatedOnHover()) {
      81                 :       // No initial delay on hover.
      82               0 :       nsRepeatService::GetInstance()->Start(Notify, this, 0);
      83                 :     } else {
      84               0 :       nsRepeatService::GetInstance()->Start(Notify, this);
      85                 :     }
      86               0 :   }
      87               0 :   void StopRepeat() {
      88               0 :     nsRepeatService::GetInstance()->Stop(Notify, this);
      89               0 :   }
      90                 :   void Notify();
      91               0 :   static void Notify(void* aData) {
      92               0 :     static_cast<nsAutoRepeatBoxFrame*>(aData)->Notify();
      93               0 :   }
      94                 : 
      95                 :   bool mTrustedEvent;
      96                 :   
      97                 :   bool IsActivatedOnHover();
      98                 : };
      99                 : 
     100                 : nsIFrame*
     101               0 : NS_NewAutoRepeatBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
     102                 : {
     103               0 :   return new (aPresShell) nsAutoRepeatBoxFrame (aPresShell, aContext);
     104                 : }
     105                 : 
     106               0 : NS_IMPL_FRAMEARENA_HELPERS(nsAutoRepeatBoxFrame)
     107                 : 
     108                 : NS_IMETHODIMP
     109               0 : nsAutoRepeatBoxFrame::HandleEvent(nsPresContext* aPresContext, 
     110                 :                                       nsGUIEvent* aEvent,
     111                 :                                       nsEventStatus* aEventStatus)
     112                 : {  
     113               0 :   NS_ENSURE_ARG_POINTER(aEventStatus);
     114               0 :   if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
     115               0 :     return NS_OK;
     116                 :   }
     117                 : 
     118               0 :   switch(aEvent->message)
     119                 :   {
     120                 :     // repeat mode may be "hover" for repeating while the mouse is hovering
     121                 :     // over the element, otherwise repetition is done while the element is
     122                 :     // active (pressed).
     123                 :     case NS_MOUSE_ENTER:
     124                 :     case NS_MOUSE_ENTER_SYNTH:
     125               0 :       if (IsActivatedOnHover()) {
     126               0 :         StartRepeat();
     127               0 :         mTrustedEvent = NS_IS_TRUSTED_EVENT(aEvent);
     128                 :       }
     129               0 :       break;
     130                 : 
     131                 :     case NS_MOUSE_EXIT:
     132                 :     case NS_MOUSE_EXIT_SYNTH:
     133                 :       // always stop on mouse exit
     134               0 :       StopRepeat();
     135                 :       // Not really necessary but do this to be safe
     136               0 :       mTrustedEvent = false;
     137               0 :       break;
     138                 : 
     139                 :     case NS_MOUSE_CLICK:
     140               0 :       if (NS_IS_MOUSE_LEFT_CLICK(aEvent)) {
     141                 :         // skip button frame handling to prevent click handling
     142               0 :          return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
     143                 :       }
     144               0 :       break;
     145                 :   }
     146                 :      
     147               0 :   return nsButtonBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
     148                 : }
     149                 : 
     150                 : NS_IMETHODIMP
     151               0 : nsAutoRepeatBoxFrame::HandlePress(nsPresContext* aPresContext, 
     152                 :                                   nsGUIEvent* aEvent,
     153                 :                                   nsEventStatus* aEventStatus)
     154                 : {
     155               0 :   if (!IsActivatedOnHover()) {
     156               0 :     StartRepeat();
     157               0 :     mTrustedEvent = NS_IS_TRUSTED_EVENT(aEvent);
     158               0 :     DoMouseClick(aEvent, mTrustedEvent);
     159                 :   }
     160                 : 
     161               0 :   return NS_OK;
     162                 : }
     163                 : 
     164                 : NS_IMETHODIMP 
     165               0 : nsAutoRepeatBoxFrame::HandleRelease(nsPresContext* aPresContext, 
     166                 :                                     nsGUIEvent* aEvent,
     167                 :                                     nsEventStatus* aEventStatus)
     168                 : {
     169               0 :   if (!IsActivatedOnHover()) {
     170               0 :     StopRepeat();
     171                 :   }
     172               0 :   return NS_OK;
     173                 : }
     174                 : 
     175                 : NS_IMETHODIMP
     176               0 : nsAutoRepeatBoxFrame::AttributeChanged(PRInt32 aNameSpaceID,
     177                 :                                        nsIAtom* aAttribute,
     178                 :                                        PRInt32 aModType)
     179                 : {
     180               0 :   if (aAttribute == nsGkAtoms::type) {
     181               0 :     StopRepeat();
     182                 :   }
     183               0 :   return NS_OK;
     184                 : }
     185                 : 
     186                 : void
     187               0 : nsAutoRepeatBoxFrame::Notify()
     188                 : {
     189               0 :   DoMouseClick(nsnull, mTrustedEvent);
     190               0 : }
     191                 : 
     192                 : void
     193               0 : nsAutoRepeatBoxFrame::DestroyFrom(nsIFrame* aDestructRoot)
     194                 : {
     195                 :   // Ensure our repeat service isn't going... it's possible that a scrollbar can disappear out
     196                 :   // from under you while you're in the process of scrolling.
     197               0 :   StopRepeat();
     198               0 :   nsButtonBoxFrame::DestroyFrom(aDestructRoot);
     199               0 : }
     200                 : 
     201                 : bool
     202               0 : nsAutoRepeatBoxFrame::IsActivatedOnHover()
     203                 : {
     204                 :   return mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::repeat,
     205               0 :                                nsGkAtoms::hover, eCaseMatters);
     206                 : }

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