Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       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/. */
       5             : 
       6             : #ifndef nsAutoCopyListener_h_
       7             : #define nsAutoCopyListener_h_
       8             : 
       9             : #include "nsISelectionListener.h"
      10             : #include "nsISelectionPrivate.h"
      11             : #include "mozilla/Attributes.h"
      12             : 
      13             : class nsAutoCopyListener final : public nsISelectionListener
      14             : {
      15             : public:
      16             :   NS_DECL_ISUPPORTS
      17             :   NS_DECL_NSISELECTIONLISTENER
      18             : 
      19           2 :   explicit nsAutoCopyListener(int16_t aClipboardID)
      20           2 :     : mCachedClipboard(aClipboardID)
      21           2 :   {}
      22             : 
      23          32 :   void Listen(nsISelectionPrivate *aSelection)
      24             :   {
      25          32 :       NS_ASSERTION(aSelection, "Null selection passed to Listen()");
      26          32 :       aSelection->AddSelectionListener(this);
      27          32 :   }
      28             : 
      29          32 :   static nsAutoCopyListener* GetInstance(int16_t aClipboardID)
      30             :   {
      31          32 :     if (!sInstance) {
      32           2 :       sInstance = new nsAutoCopyListener(aClipboardID);
      33             : 
      34           2 :       NS_ADDREF(sInstance);
      35             :     }
      36             : 
      37          32 :     return sInstance;
      38             :   }
      39             : 
      40           0 :   static void Shutdown()
      41             :   {
      42           0 :     NS_IF_RELEASE(sInstance);
      43           0 :   }
      44             : 
      45             : private:
      46           0 :   ~nsAutoCopyListener() {}
      47             : 
      48             :   static nsAutoCopyListener* sInstance;
      49             :   int16_t mCachedClipboard;
      50             : };
      51             : 
      52             : #endif