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 blink { 16 class WebFrame; 17 struct WebPluginParams; 18 } 19 20 namespace content { 21 22 class BrowserPlugin; 23 class BrowserPluginManagerFactory; 24 class RenderViewImpl; 25 26 // BrowserPluginManager manages the routing of messages to the appropriate 27 // BrowserPlugin object based on its instance ID. 28 class CONTENT_EXPORT BrowserPluginManager 29 : public RenderViewObserver, 30 public base::RefCounted<BrowserPluginManager> { 31 public: 32 // Returns the one BrowserPluginManager for this process. 33 static BrowserPluginManager* Create(RenderViewImpl* render_view); 34 35 // Overrides factory for testing. Default (NULL) value indicates regular 36 // (non-test) environment. set_factory_for_testing(BrowserPluginManagerFactory * factory)37 static void set_factory_for_testing(BrowserPluginManagerFactory* factory) { 38 BrowserPluginManager::factory_ = factory; 39 } 40 41 explicit BrowserPluginManager(RenderViewImpl* render_view); 42 43 // Creates a new BrowserPlugin object. 44 // BrowserPlugin is responsible for associating itself with the 45 // BrowserPluginManager via AddBrowserPlugin. When it is destroyed, it is 46 // responsible for removing its association via RemoveBrowserPlugin. 47 virtual BrowserPlugin* CreateBrowserPlugin( 48 RenderViewImpl* render_view, blink::WebFrame* frame) = 0; 49 50 // Asynchronously requests a new browser-process-allocated instance ID. 51 // After the browser process allocates an ID, it calls back into the 52 // |browser_plugin| if it's still alive. 53 virtual void AllocateInstanceID( 54 const base::WeakPtr<BrowserPlugin>& browser_plugin) = 0; 55 56 void AddBrowserPlugin(int guest_instance_id, BrowserPlugin* browser_plugin); 57 void RemoveBrowserPlugin(int guest_instance_id); 58 BrowserPlugin* GetBrowserPlugin(int guest_instance_id) const; 59 void UpdateDeviceScaleFactor(float device_scale_factor); 60 void UpdateFocusState(); render_view()61 RenderViewImpl* render_view() const { return render_view_.get(); } 62 63 // RenderViewObserver implementation. 64 65 // BrowserPluginManager must override the default Send behavior. 66 virtual bool Send(IPC::Message* msg) OVERRIDE = 0; 67 68 // Don't destroy the BrowserPluginManager when the RenderViewImpl goes away. 69 // BrowserPluginManager's lifetime is managed by a reference count. Once 70 // the host RenderViewImpl and all BrowserPlugins release their references, 71 // then the BrowserPluginManager will be destroyed. OnDestruct()72 virtual void OnDestruct() OVERRIDE {} 73 74 protected: 75 // Friend RefCounted so that the dtor can be non-public. 76 friend class base::RefCounted<BrowserPluginManager>; 77 78 // Static factory instance (always NULL for non-test). 79 static BrowserPluginManagerFactory* factory_; 80 81 virtual ~BrowserPluginManager(); 82 // This map is keyed by guest instance IDs. 83 IDMap<BrowserPlugin> instances_; 84 base::WeakPtr<RenderViewImpl> render_view_; 85 86 DISALLOW_COPY_AND_ASSIGN(BrowserPluginManager); 87 }; 88 89 } // namespace content 90 91 #endif // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_MANAGER_H_ 92