1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=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_dom_ContentFrameMessageManager_h
8 #define mozilla_dom_ContentFrameMessageManager_h
9 
10 #include "mozilla/DOMEventTargetHelper.h"
11 #include "mozilla/dom/MessageManagerGlobal.h"
12 #include "nsContentUtils.h"
13 #include "xpcpublic.h"
14 
15 namespace mozilla {
16 namespace dom {
17 
18 template <typename>
19 struct Nullable;
20 class WindowProxyHolder;
21 
22 #define NS_CONTENTFRAMEMESSAGEMANAGER_IID            \
23   {                                                  \
24     0x97e192a6, 0xab7a, 0x4c8f, {                    \
25       0xb7, 0xdd, 0xf7, 0xec, 0x36, 0x38, 0x71, 0xb5 \
26     }                                                \
27   }
28 
29 /**
30  * Base class for implementing the WebIDL ContentFrameMessageManager class.
31  */
32 class ContentFrameMessageManager : public DOMEventTargetHelper,
33                                    public MessageManagerGlobal {
34  public:
35   using DOMEventTargetHelper::AddRef;
36   using DOMEventTargetHelper::Release;
37 
38   NS_DECLARE_STATIC_IID_ACCESSOR(NS_CONTENTFRAMEMESSAGEMANAGER_IID)
39 
40   virtual Nullable<WindowProxyHolder> GetContent(ErrorResult& aError) = 0;
41   virtual already_AddRefed<nsIDocShell> GetDocShell(ErrorResult& aError) = 0;
42   virtual already_AddRefed<nsIEventTarget> GetTabEventTarget() = 0;
43 
GetMessageManager()44   nsFrameMessageManager* GetMessageManager() { return mMessageManager; }
DisconnectMessageManager()45   void DisconnectMessageManager() {
46     mMessageManager->Disconnect();
47     mMessageManager = nullptr;
48   }
49 
50   JSObject* GetOrCreateWrapper();
51 
52  protected:
ContentFrameMessageManager(nsFrameMessageManager * aMessageManager)53   explicit ContentFrameMessageManager(nsFrameMessageManager* aMessageManager)
54       : DOMEventTargetHelper(xpc::NativeGlobal(xpc::PrivilegedJunkScope())),
55         MessageManagerGlobal(aMessageManager) {}
56 };
57 
58 NS_DEFINE_STATIC_IID_ACCESSOR(ContentFrameMessageManager,
59                               NS_CONTENTFRAMEMESSAGEMANAGER_IID)
60 
61 }  // namespace dom
62 }  // namespace mozilla
63 
64 #endif  // mozilla_dom_ContentFrameMessageManager_h
65