LCOV - code coverage report
Current view: directory - dom/plugins/ipc - PluginBackgroundDestroyer.h (source / functions) Found Hit Coverage
Test: app.info Lines: 16 0 0.0 %
Date: 2012-06-02 Functions: 8 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  * vim: sw=4 ts=8 et :
       3                 :  */
       4                 : /* ***** BEGIN LICENSE BLOCK *****
       5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       6                 :  *
       7                 :  * The contents of this file are subject to the Mozilla Public License Version
       8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       9                 :  * the License. You may obtain a copy of the License at:
      10                 :  * http://www.mozilla.org/MPL/
      11                 :  *
      12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      14                 :  * for the specific language governing rights and limitations under the
      15                 :  * License.
      16                 :  *
      17                 :  * The Original Code is Mozilla Code.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  *   The Mozilla Foundation
      21                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *   Chris Jones <jones.chris.g@gmail.com>
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      29                 :  * 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                 : #ifndef dom_plugins_PluginBackgroundDestroyer
      42                 : #define dom_plugins_PluginBackgroundDestroyer
      43                 : 
      44                 : #include "mozilla/plugins/PPluginBackgroundDestroyerChild.h"
      45                 : #include "mozilla/plugins/PPluginBackgroundDestroyerParent.h"
      46                 : 
      47                 : #include "gfxASurface.h"
      48                 : #include "gfxSharedImageSurface.h"
      49                 : 
      50                 : namespace mozilla {
      51                 : namespace plugins {
      52                 : 
      53                 : /**
      54                 :  * When instances of this class are destroyed, the old background goes
      55                 :  * along with them, completing the destruction process (whether or not
      56                 :  * the plugin stayed alive long enough to ack).
      57                 :  */
      58                 : class PluginBackgroundDestroyerParent : public PPluginBackgroundDestroyerParent {
      59                 : public:
      60               0 :     PluginBackgroundDestroyerParent(gfxASurface* aDyingBackground)
      61               0 :       : mDyingBackground(aDyingBackground)
      62               0 :     { }
      63                 : 
      64               0 :     virtual ~PluginBackgroundDestroyerParent() { }
      65                 : 
      66                 : private:
      67                 :     NS_OVERRIDE
      68               0 :     virtual void ActorDestroy(ActorDestroyReason why)
      69                 :     {
      70               0 :         switch(why) {
      71                 :         case Deletion:
      72                 :         case AncestorDeletion:
      73               0 :             if (gfxSharedImageSurface::IsSharedImage(mDyingBackground)) {
      74                 :                 gfxSharedImageSurface* s =
      75               0 :                     static_cast<gfxSharedImageSurface*>(mDyingBackground.get());
      76               0 :                 DeallocShmem(s->GetShmem());
      77                 :             }
      78               0 :             break;
      79                 :         default:
      80                 :             // We're shutting down or crashed, let automatic cleanup
      81                 :             // take care of our shmem, if we have one.
      82               0 :             break;
      83                 :         }
      84               0 :     }
      85                 : 
      86                 :     nsRefPtr<gfxASurface> mDyingBackground;
      87                 : };
      88                 : 
      89                 : /**
      90                 :  * This class exists solely to instruct its instance to release its
      91                 :  * current background, a new one may be coming.
      92                 :  */
      93                 : class PluginBackgroundDestroyerChild : public PPluginBackgroundDestroyerChild {
      94                 : public:
      95               0 :     PluginBackgroundDestroyerChild() { }
      96               0 :     virtual ~PluginBackgroundDestroyerChild() { }
      97                 : 
      98                 : private:
      99                 :     // Implementing this for good hygiene.
     100                 :     NS_OVERRIDE
     101               0 :     virtual void ActorDestroy(ActorDestroyReason why)
     102               0 :     { }
     103                 : };
     104                 : 
     105                 : } // namespace plugins
     106                 : } // namespace mozilla
     107                 : 
     108                 : #endif  // dom_plugins_PluginBackgroundDestroyer

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