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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_BROWSER_RENDERER_HOST_JAVA_JAVA_BRIDGE_DISPATCHER_HOST_MANAGER_H
_ | |
6 #define CONTENT_BROWSER_RENDERER_HOST_JAVA_JAVA_BRIDGE_DISPATCHER_HOST_MANAGER_H
_ | |
7 | |
8 #include <map> | |
9 | |
10 #include "base/android/jni_weak_ref.h" | |
11 #include "base/android/scoped_java_ref.h" | |
12 #include "base/compiler_specific.h" | |
13 #include "base/memory/ref_counted.h" | |
14 #include "base/memory/weak_ptr.h" | |
15 #include "base/strings/string16.h" | |
16 #include "content/public/browser/web_contents_observer.h" | |
17 | |
18 struct NPObject; | |
19 | |
20 namespace content { | |
21 class JavaBridgeDispatcherHost; | |
22 class RenderFrameHost; | |
23 | |
24 // This class handles injecting Java objects into all of the RenderFrames | |
25 // associated with a WebContents. It manages a set of JavaBridgeDispatcherHost | |
26 // objects, one per RenderFrameHost. | |
27 class JavaBridgeDispatcherHostManager | |
28 : public WebContentsObserver, | |
29 public base::SupportsWeakPtr<JavaBridgeDispatcherHostManager> { | |
30 public: | |
31 JavaBridgeDispatcherHostManager(WebContents* web_contents, | |
32 jobject retained_object_set); | |
33 virtual ~JavaBridgeDispatcherHostManager(); | |
34 | |
35 // These methods add or remove the object to each JavaBridgeDispatcherHost. | |
36 // Each one holds a reference to the NPObject while the object is bound to | |
37 // the corresponding RenderFrame. See JavaBridgeDispatcherHost for details. | |
38 void AddNamedObject(const base::string16& name, NPObject* object); | |
39 void RemoveNamedObject(const base::string16& name); | |
40 | |
41 // WebContentsObserver overrides | |
42 virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE; | |
43 virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE; | |
44 virtual void DocumentAvailableInMainFrame() OVERRIDE; | |
45 virtual bool OnMessageReceived(const IPC::Message& message, | |
46 RenderFrameHost* render_frame_host) OVERRIDE; | |
47 | |
48 void JavaBoundObjectCreated(const base::android::JavaRef<jobject>& object); | |
49 void JavaBoundObjectDestroyed(const base::android::JavaRef<jobject>& object); | |
50 | |
51 bool GetAllowObjectContentsInspection() const { | |
52 return allow_object_contents_inspection_; | |
53 } | |
54 void SetAllowObjectContentsInspection(bool allow); | |
55 | |
56 private: | |
57 typedef std::map<RenderFrameHost*, scoped_refptr<JavaBridgeDispatcherHost> > | |
58 InstanceMap; | |
59 InstanceMap instances_; | |
60 typedef std::map<base::string16, NPObject*> ObjectMap; | |
61 ObjectMap objects_; | |
62 // Every time a JavaBoundObject backed by a real Java object is | |
63 // created/destroyed, we insert/remove a strong ref to that Java object into | |
64 // this set so that it doesn't get garbage collected while it's still | |
65 // potentially in use. Although the set is managed native side, it's owned | |
66 // and defined in Java so that pushing refs into it does not create new GC | |
67 // roots that would prevent ContentViewCore from being garbage collected. | |
68 JavaObjectWeakGlobalRef retained_object_set_; | |
69 bool allow_object_contents_inspection_; | |
70 | |
71 DISALLOW_COPY_AND_ASSIGN(JavaBridgeDispatcherHostManager); | |
72 }; | |
73 | |
74 } // namespace content | |
75 | |
76 #endif // CONTENT_BROWSER_RENDERER_HOST_JAVA_JAVA_BRIDGE_DISPATCHER_HOST_MANAGE
R_H_ | |
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