• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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