Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_a11y_DocAccessibleChildBase_h
       8             : #define mozilla_a11y_DocAccessibleChildBase_h
       9             : 
      10             : #include "mozilla/a11y/DocAccessible.h"
      11             : #include "mozilla/a11y/PDocAccessibleChild.h"
      12             : #include "mozilla/Unused.h"
      13             : #include "nsISupportsImpl.h"
      14             : 
      15             : namespace mozilla {
      16             : namespace a11y {
      17             : 
      18             : class Accessible;
      19             : class AccShowEvent;
      20             : 
      21             : class DocAccessibleChildBase : public PDocAccessibleChild
      22             : {
      23             : public:
      24           0 :   explicit DocAccessibleChildBase(DocAccessible* aDoc)
      25           0 :     : mDoc(aDoc)
      26             :   {
      27           0 :     MOZ_COUNT_CTOR(DocAccessibleChildBase);
      28           0 :   }
      29             : 
      30           0 :   ~DocAccessibleChildBase()
      31           0 :   {
      32             :     // Shutdown() should have been called, but maybe it isn't if the process is
      33             :     // killed?
      34           0 :     MOZ_ASSERT(!mDoc);
      35           0 :     if (mDoc) {
      36           0 :       mDoc->SetIPCDoc(nullptr);
      37             :     }
      38             : 
      39           0 :     MOZ_COUNT_DTOR(DocAccessibleChildBase);
      40           0 :   }
      41             : 
      42           0 :   virtual void Shutdown()
      43             :   {
      44           0 :     DetachDocument();
      45           0 :     SendShutdown();
      46           0 :   }
      47             : 
      48             :   void ShowEvent(AccShowEvent* aShowEvent);
      49             : 
      50           0 :   virtual void ActorDestroy(ActorDestroyReason) override
      51             :   {
      52           0 :     if (!mDoc) {
      53           0 :       return;
      54             :     }
      55             : 
      56           0 :     mDoc->SetIPCDoc(nullptr);
      57           0 :     mDoc = nullptr;
      58             :   }
      59             : 
      60             : protected:
      61             :   static uint32_t InterfacesFor(Accessible* aAcc);
      62             :   static void SerializeTree(Accessible* aRoot, nsTArray<AccessibleData>& aTree);
      63             : 
      64           0 :   virtual void MaybeSendShowEvent(ShowEventData& aData, bool aFromUser)
      65           0 :   { Unused << SendShowEvent(aData, aFromUser); }
      66             : 
      67           0 :   void DetachDocument()
      68             :   {
      69           0 :     if (mDoc) {
      70           0 :       mDoc->SetIPCDoc(nullptr);
      71           0 :       mDoc = nullptr;
      72             :     }
      73           0 :   }
      74             : 
      75             :   DocAccessible*  mDoc;
      76             : };
      77             : 
      78             : } // namespace a11y
      79             : } // namespace mozilla
      80             : 
      81             : #endif // mozilla_a11y_DocAccessibleChildBase_h