1 // Copyright (c) 2012 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_BROWSER_PLUGIN_BROWSER_PLUGIN_MANAGER_H_ 6 #define CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_MANAGER_H_ 7 8 #include "base/id_map.h" 9 #include "base/memory/ref_counted.h" 10 #include "base/memory/weak_ptr.h" 11 #include "base/observer_list.h" 12 #include "content/public/renderer/render_view_observer.h" 13 #include "ipc/ipc_sender.h" 14 15 namespace base { 16 class DictionaryValue; 17 } 18 19 namespace blink { 20 class WebFrame; 21 class WebNode; 22 struct WebPluginParams; 23 } 24 25 namespace content { 26 27 class BrowserPlugin; 28 class BrowserPluginDelegate; 29 class BrowserPluginManagerFactory; 30 class RenderViewImpl; 31 32 // BrowserPluginManager manages the routing of messages to the appropriate 33 // BrowserPlugin object based on its instance ID. 34 class CONTENT_EXPORT BrowserPluginManager 35 : public RenderViewObserver, 36 public base::RefCounted<BrowserPluginManager> { 37 public: 38 // Returns the one BrowserPluginManager for this process. 39 static BrowserPluginManager* Create(RenderViewImpl* render_view); 40 41 // Overrides factory for testing. Default (NULL) value indicates regular 42 // (non-test) environment. set_factory_for_testing(BrowserPluginManagerFactory * factory)43 static void set_factory_for_testing(BrowserPluginManagerFactory* factory) { 44 BrowserPluginManager::factory_ = factory; 45 } 46 47 explicit BrowserPluginManager(RenderViewImpl* render_view); 48 49 // Creates a new BrowserPlugin object. 50 // BrowserPlugin is responsible for associating itself with the 51 // BrowserPluginManager via AddBrowserPlugin. When it is destroyed, it is 52 // responsible for removing its association via RemoveBrowserPlugin. 53 virtual BrowserPlugin* CreateBrowserPlugin( 54 RenderViewImpl* render_view, 55 blink::WebFrame* frame, 56 scoped_ptr<BrowserPluginDelegate> delegate) = 0; 57 58 void Attach(int browser_plugin_instance_id); 59 60 void AddBrowserPlugin(int browser_plugin_instance_id, 61 BrowserPlugin* browser_plugin); 62 void RemoveBrowserPlugin(int browser_plugin_instance_id); 63 BrowserPlugin* GetBrowserPlugin(int browser_plugin_instance_id) const; 64 65 void UpdateDeviceScaleFactor(); 66 void UpdateFocusState(); render_view()67 RenderViewImpl* render_view() const { return render_view_.get(); } 68 int GetNextInstanceID(); 69 70 // RenderViewObserver implementation. 71 72 // BrowserPluginManager must override the default Send behavior. 73 virtual bool Send(IPC::Message* msg) OVERRIDE = 0; 74 75 // Don't destroy the BrowserPluginManager when the RenderViewImpl goes away. 76 // BrowserPluginManager's lifetime is managed by a reference count. Once 77 // the host RenderViewImpl and all BrowserPlugins release their references, 78 // then the BrowserPluginManager will be destroyed. OnDestruct()79 virtual void OnDestruct() OVERRIDE {} 80 81 protected: 82 // Friend RefCounted so that the dtor can be non-public. 83 friend class base::RefCounted<BrowserPluginManager>; 84 85 // Static factory instance (always NULL for non-test). 86 static BrowserPluginManagerFactory* factory_; 87 88 virtual ~BrowserPluginManager(); 89 // This map is keyed by guest instance IDs. 90 IDMap<BrowserPlugin> instances_; 91 int current_instance_id_; 92 base::WeakPtr<RenderViewImpl> render_view_; 93 94 DISALLOW_COPY_AND_ASSIGN(BrowserPluginManager); 95 }; 96 97 } // namespace content 98 99 #endif // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_MANAGER_H_ 100