| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_ |
| #define CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_ |
| |
| #include "base/callback_forward.h" |
| #include "base/id_map.h" |
| #include "content/public/browser/web_contents_observer.h" |
| |
| namespace content { |
| |
| class RenderFrameHost; |
| class WebContents; |
| struct Manifest; |
| |
| // ManifestManagerHost is a helper class that allows callers to get the Manifest |
| // associated with a frame. It handles the IPC messaging with the child process. |
| // TODO(mlamouri): keep a cached version and a dirty bit here. |
| class ManifestManagerHost : public WebContentsObserver { |
| public: |
| explicit ManifestManagerHost(WebContents* web_contents); |
| ~ManifestManagerHost() override; |
| |
| typedef base::Callback<void(const Manifest&)> GetManifestCallback; |
| |
| // Calls the given callback with the manifest associated with the |
| // given RenderFrameHost. If the frame has no manifest or if getting it failed |
| // the callback will have an empty manifest. |
| void GetManifest(RenderFrameHost*, const GetManifestCallback&); |
| |
| // WebContentsObserver |
| bool OnMessageReceived(const IPC::Message&, RenderFrameHost*) override; |
| void RenderFrameDeleted(RenderFrameHost*) override; |
| |
| private: |
| typedef IDMap<GetManifestCallback, IDMapOwnPointer> CallbackMap; |
| typedef base::hash_map<RenderFrameHost*, CallbackMap*> FrameCallbackMap; |
| |
| void OnRequestManifestResponse( |
| RenderFrameHost*, int request_id, const Manifest&); |
| |
| // Returns the CallbackMap associated with the given RenderFrameHost, or null. |
| CallbackMap* GetCallbackMapForFrame(RenderFrameHost*); |
| |
| FrameCallbackMap pending_callbacks_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ManifestManagerHost); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_MANIFEST_MANIFEST_MANAGER_HOST_H_ |