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Side by Side Diff: content/browser/renderer_host/java/java_bridge_dispatcher_host_manager.h

Issue 336313018: [Android] Move content/browser/{renderer_host => android}/java/* (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Updated paths for unit tests, rebased Created 6 years, 5 months ago
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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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