| // Copyright (c) 2012 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 CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_ |
| #define CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_ |
| |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/scoped_observer.h" |
| #include "chrome/browser/media/media_capture_devices_dispatcher.h" |
| #include "chrome/common/extensions/api/tab_capture.h" |
| #include "content/public/browser/media_request_state.h" |
| #include "extensions/browser/browser_context_keyed_api_factory.h" |
| #include "extensions/browser/extension_registry_observer.h" |
| |
| namespace base { |
| class ListValue; |
| } |
| |
| namespace content { |
| class BrowserContext; |
| class WebContents; |
| } |
| |
| namespace extensions { |
| |
| class ExtensionRegistry; |
| |
| namespace tab_capture = api::tab_capture; |
| |
| class TabCaptureRegistry : public BrowserContextKeyedAPI, |
| public ExtensionRegistryObserver, |
| public MediaCaptureDevicesDispatcher::Observer { |
| public: |
| static TabCaptureRegistry* Get(content::BrowserContext* context); |
| |
| // Used by BrowserContextKeyedAPI. |
| static BrowserContextKeyedAPIFactory<TabCaptureRegistry>* |
| GetFactoryInstance(); |
| |
| // List all pending, active and stopped capture requests. |
| void GetCapturedTabs(const std::string& extension_id, |
| base::ListValue* list_of_capture_info) const; |
| |
| // Add a tab capture request to the registry when a stream is requested |
| // through the API. |target_contents| refers to the WebContents associated |
| // with the tab to be captured. |extension_id| refers to the Extension |
| // initiating the request. |is_anonymous| is true if GetCapturedTabs() should |
| // not list the captured tab, and no status change events should be dispatched |
| // for it. |
| // |
| // TODO(miu): This is broken in that it's possible for a later WebContents |
| // instance to have the same pointer value as a previously-destroyed one. To |
| // be fixed while working on http://crbug.com/163100. |
| bool AddRequest(content::WebContents* target_contents, |
| const std::string& extension_id, |
| bool is_anonymous); |
| |
| // Called by MediaStreamDevicesController to verify the request before |
| // creating the stream. |render_process_id| and |render_frame_id| are used to |
| // look-up a WebContents instance, which should match the |target_contents| |
| // from the prior call to AddRequest(). In addition, a request is not |
| // verified unless the |extension_id| also matches AND the request itself is |
| // in the PENDING state. |
| bool VerifyRequest(int render_process_id, |
| int render_frame_id, |
| const std::string& extension_id); |
| |
| private: |
| friend class BrowserContextKeyedAPIFactory<TabCaptureRegistry>; |
| class LiveRequest; |
| |
| explicit TabCaptureRegistry(content::BrowserContext* context); |
| ~TabCaptureRegistry() override; |
| |
| // Used by BrowserContextKeyedAPI. |
| static const char* service_name() { |
| return "TabCaptureRegistry"; |
| } |
| |
| static const bool kServiceIsCreatedWithBrowserContext = false; |
| static const bool kServiceRedirectedInIncognito = true; |
| |
| // ExtensionRegistryObserver implementation. |
| void OnExtensionUnloaded(content::BrowserContext* browser_context, |
| const Extension* extension, |
| UnloadedExtensionInfo::Reason reason) override; |
| |
| // MediaCaptureDevicesDispatcher::Observer implementation. |
| void OnRequestUpdate(int original_target_render_process_id, |
| int original_target_render_frame_id, |
| content::MediaStreamType stream_type, |
| const content::MediaRequestState state) override; |
| |
| // Send a StatusChanged event containing the current state of |request|. |
| void DispatchStatusChangeEvent(const LiveRequest* request) const; |
| |
| // Look-up a LiveRequest associated with the given |target_contents| (or |
| // the originally targetted RenderFrameHost), if any. |
| LiveRequest* FindRequest(const content::WebContents* target_contents) const; |
| LiveRequest* FindRequest(int original_target_render_process_id, |
| int original_target_render_frame_id) const; |
| |
| // Removes the |request| from |requests_|, thus causing its destruction. |
| void KillRequest(LiveRequest* request); |
| |
| content::BrowserContext* const browser_context_; |
| std::vector<std::unique_ptr<LiveRequest>> requests_; |
| |
| ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver> |
| extension_registry_observer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TabCaptureRegistry); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_ |