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) 13namespace BASE_HASH_NAMESPACE { 14template<> 15struct hash<content::RenderFrameHost*> { 16 uint64 operator()(content::RenderFrameHost* ptr) const { 17 return hash<uint64>()(reinterpret_cast<uint64>(ptr)); 18 } 19}; 20} 21#endif 22 23namespace content { 24 25class RenderFrameHost; 26class WebContents; 27struct 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. 32class 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_ 67