The Tor Browser: dom/plugins/base/nsPluginNativeWindow.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef _nsPluginNativeWindow_h_

     7 #define _nsPluginNativeWindow_h_

     9 #include "nscore.h"

    10 #include "nsAutoPtr.h"

    11 #include "nsCOMPtr.h"

    12 #include "nsISupportsImpl.h"

    13 #include "nsNPAPIPluginInstance.h"

    14 #include "npapi.h"

    15 #include "nsIWidget.h"

    17 /**

    18  * base class for native plugin window implementations

    19  */

    20 class nsPluginNativeWindow : public NPWindow

    21 {

    22 public:

    23   nsPluginNativeWindow() : NPWindow() {

    24     MOZ_COUNT_CTOR(nsPluginNativeWindow);

    25   }

    27   virtual ~nsPluginNativeWindow() {

    28     MOZ_COUNT_DTOR(nsPluginNativeWindow);

    29   }

    31   /**

    32    *   !!! CAUTION !!!

    33    *

    34    * The base class |nsPluginWindow| is defined as a struct in nsplugindefs.h,

    35    * thus it does not have a destructor of its own.

    36    * One should never attempt to delete |nsPluginNativeWindow| object instance

    37    * (or derivatives) using a pointer of |nsPluginWindow *| type. Should such

    38    * necessity occur it must be properly casted first.

    39    */

    41 public:

    42   nsresult GetPluginInstance(nsRefPtr<nsNPAPIPluginInstance> &aPluginInstance) {

    43     aPluginInstance = mPluginInstance;

    44     return NS_OK;

    45   }

    46   nsresult SetPluginInstance(nsNPAPIPluginInstance *aPluginInstance) {

    47     if (mPluginInstance != aPluginInstance)

    48       mPluginInstance = aPluginInstance;

    49     return NS_OK;

    50   }

    52   nsresult GetPluginWidget(nsIWidget **aWidget) {

    53     NS_IF_ADDREF(*aWidget = mWidget);

    54     return NS_OK;

    55   }

    56   nsresult SetPluginWidget(nsIWidget *aWidget) {

    57     mWidget = aWidget;

    58     return NS_OK;

    59   }

    61 public:

    62   virtual nsresult CallSetWindow(nsRefPtr<nsNPAPIPluginInstance> &aPluginInstance) {

    63     // null aPluginInstance means that we want to call SetWindow(null)

    64     if (aPluginInstance)

    65       aPluginInstance->SetWindow(this);

    66     else if (mPluginInstance)

    67       mPluginInstance->SetWindow(nullptr);

    69     SetPluginInstance(aPluginInstance);

    70     return NS_OK;

    71   }

    73 protected:

    74   nsRefPtr<nsNPAPIPluginInstance> mPluginInstance;

    75   nsCOMPtr<nsIWidget> mWidget;

    76 };

    78 nsresult PLUG_NewPluginNativeWindow(nsPluginNativeWindow ** aPluginNativeWindow);

    79 nsresult PLUG_DeletePluginNativeWindow(nsPluginNativeWindow * aPluginNativeWindow);

    81 #endif //_nsPluginNativeWindow_h_

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