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1 // Copyright (c) 2011 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 CHROME_BROWSER_PLUGIN_DATA_REMOVER_H_ | |
6 #define CHROME_BROWSER_PLUGIN_DATA_REMOVER_H_ | |
7 #pragma once | |
8 | |
9 #include "base/memory/ref_counted.h" | |
10 #include "base/time.h" | |
11 #include "content/browser/plugin_process_host.h" | |
12 | |
13 class PluginPrefs; | |
14 class Profile; | |
15 class Task; | |
16 | |
17 namespace base { | |
18 class MessageLoopProxy; | |
19 class WaitableEvent; | |
20 } | |
21 | |
22 class PluginDataRemover : public base::RefCountedThreadSafe<PluginDataRemover>, | |
23 public PluginProcessHost::Client, | |
24 public IPC::Channel::Listener { | |
25 public: | |
26 explicit PluginDataRemover(Profile* profile); | |
27 | |
28 // The plug-in whose data should be removed (usually Flash) is specified via | |
29 // its MIME type. This method sets a different MIME type in order to call a | |
30 // different plug-in (for example in tests). | |
31 void set_mime_type(const std::string& mime_type) { mime_type_ = mime_type; } | |
32 | |
33 // Starts removing plug-in data stored since |begin_time|. | |
34 base::WaitableEvent* StartRemoving(base::Time begin_time); | |
35 | |
36 // Returns whether there is a plug-in installed that supports removing | |
37 // LSO data. This method will use cached plugin data. Call | |
38 // PluginService::GetPlugins() if the latest data is needed. | |
39 static bool IsSupported(PluginPrefs* plugin_prefs); | |
40 | |
41 // Indicates whether we are still in the process of removing plug-in data. | |
42 bool is_removing() const { return is_removing_; } | |
43 | |
44 // Wait until removing has finished. When the browser is still running (i.e. | |
45 // not during shutdown), you should use a WaitableEventWatcher in combination | |
46 // with the WaitableEvent returned by StartRemoving. | |
47 void Wait(); | |
48 | |
49 // PluginProcessHost::Client methods. | |
50 virtual int ID() OVERRIDE; | |
51 virtual bool OffTheRecord() OVERRIDE; | |
52 virtual const content::ResourceContext& GetResourceContext() OVERRIDE; | |
53 virtual void SetPluginInfo(const webkit::WebPluginInfo& info) OVERRIDE; | |
54 virtual void OnFoundPluginProcessHost(PluginProcessHost* host) OVERRIDE; | |
55 virtual void OnSentPluginChannelRequest() OVERRIDE; | |
56 virtual void OnChannelOpened(const IPC::ChannelHandle& handle) OVERRIDE; | |
57 virtual void OnError() OVERRIDE; | |
58 | |
59 // IPC::Channel::Listener methods. | |
60 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; | |
61 virtual void OnChannelError() OVERRIDE; | |
62 | |
63 private: | |
64 friend class base::RefCountedThreadSafe<PluginDataRemover>; | |
65 friend class PluginDataRemoverTest; | |
66 virtual ~PluginDataRemover(); | |
67 | |
68 // Signals that we are finished with removing data (successful or not). This | |
69 // method is safe to call multiple times. | |
70 void SignalDone(); | |
71 // Connects the client side of a newly opened plug-in channel. | |
72 void ConnectToChannel(const IPC::ChannelHandle& handle); | |
73 // Handles the PluginHostMsg_ClearSiteDataResult message. | |
74 void OnClearSiteDataResult(bool success); | |
75 // Called when a timeout happens in order not to block the client | |
76 // indefinitely. | |
77 void OnTimeout(); | |
78 | |
79 std::string mime_type_; | |
80 bool is_removing_; | |
81 // The point in time when we start removing data. | |
82 base::Time remove_start_time_; | |
83 // The point in time from which on we remove data. | |
84 base::Time begin_time_; | |
85 // The resource context for the profile. | |
86 const content::ResourceContext& context_; | |
87 scoped_ptr<base::WaitableEvent> event_; | |
88 // We own the channel, but it's used on the IO thread, so it needs to be | |
89 // deleted there. It's NULL until we have opened a connection to the plug-in | |
90 // process. | |
91 IPC::Channel* channel_; | |
92 | |
93 DISALLOW_COPY_AND_ASSIGN(PluginDataRemover); | |
94 }; | |
95 | |
96 #endif // CHROME_BROWSER_PLUGIN_DATA_REMOVER_H_ | |
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