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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_ |
| 6 #define CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_ |
| 7 |
| 8 #include "base/callback_forward.h" |
| 9 #include "base/id_map.h" |
| 10 #include "content/public/browser/web_contents_observer.h" |
| 11 |
| 12 #if defined(COMPILER_GCC) |
| 13 namespace BASE_HASH_NAMESPACE { |
| 14 template<> |
| 15 struct hash<content::RenderFrameHost*> { |
| 16 uint64 operator()(content::RenderFrameHost* ptr) const { |
| 17 return hash<uint64>()(reinterpret_cast<uint64>(ptr)); |
| 18 } |
| 19 }; |
| 20 } |
| 21 #endif |
| 22 |
| 23 namespace content { |
| 24 |
| 25 class RenderFrameHost; |
| 26 class WebContents; |
| 27 struct Manifest; |
| 28 |
| 29 // ManifestManagerHost is a helper class that allows callers to get the Manifest |
| 30 // associated with a frame. It handles the IPC messaging with the child process. |
| 31 // TODO(mlamouri): keep a cached version and a dirty bit here. |
| 32 class ManifestManagerHost : public WebContentsObserver { |
| 33 public: |
| 34 explicit ManifestManagerHost(WebContents* web_contents); |
| 35 virtual ~ManifestManagerHost(); |
| 36 |
| 37 typedef base::Callback<void(const Manifest&)> GetManifestCallback; |
| 38 |
| 39 // Calls the given callback with the manifest associated with the |
| 40 // given RenderFrameHost. If the frame has no manifest or if getting it failed |
| 41 // the callback will have an empty manifest. |
| 42 void GetManifest(RenderFrameHost*, const GetManifestCallback&); |
| 43 |
| 44 // WebContentsObserver |
| 45 virtual bool OnMessageReceived(const IPC::Message&, |
| 46 RenderFrameHost*) OVERRIDE; |
| 47 virtual void RenderFrameDeleted(RenderFrameHost*) OVERRIDE; |
| 48 |
| 49 private: |
| 50 typedef IDMap<GetManifestCallback, IDMapOwnPointer> CallbackMap; |
| 51 typedef base::hash_map<RenderFrameHost*, CallbackMap*> FrameCallbackMap; |
| 52 |
| 53 void OnRequestManifestResponse( |
| 54 RenderFrameHost*, int request_id, const Manifest&); |
| 55 |
| 56 // Returns the CallbackMap associated with the given RenderFrameHost, or null. |
| 57 CallbackMap* GetCallbackMapForFrame(RenderFrameHost*); |
| 58 |
| 59 FrameCallbackMap pending_callbacks_; |
| 60 |
| 61 DISALLOW_COPY_AND_ASSIGN(ManifestManagerHost); |
| 62 }; |
| 63 |
| 64 } // namespace content |
| 65 |
| 66 #endif // CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_ |
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