plugin_data_remover.h revision dc0f95d653279beabeb9817299e2902918ba123e 
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/ref_counted.h"
10#include "base/time.h"
11#include "content/browser/plugin_process_host.h"
12
13class Task;
14
15namespace base {
16class MessageLoopProxy;
17class WaitableEvent;
18}
19
20class PluginDataRemover : public base::RefCountedThreadSafe<PluginDataRemover>,
21                          public PluginProcessHost::Client,
22                          public IPC::Channel::Listener {
23 public:
24  PluginDataRemover();
25
26  // Used in tests to call a different plugin.
27  void set_mime_type(const std::string& mime_type) { mime_type_ = mime_type; }
28
29  // Starts removing plug-in data stored since |begin_time|.
30  base::WaitableEvent* StartRemoving(const base::Time& begin_time);
31
32  // Returns whether there is a plug-in installed that supports removing
33  // LSO data. Because this method possibly has to load the plug-in list, it
34  // should only be called on the FILE thread.
35  static bool IsSupported();
36
37  bool is_removing() const { return is_removing_; }
38
39  // Wait until removing has finished. When the browser is still running (i.e.
40  // not during shutdown), you should use a WaitableEventWatcher in combination
41  // with the WaitableEvent returned by StartRemoving.
42  void Wait();
43
44  // PluginProcessHost::Client methods
45  virtual int ID();
46  virtual bool OffTheRecord();
47  virtual void SetPluginInfo(const webkit::npapi::WebPluginInfo& info);
48  virtual void OnChannelOpened(const IPC::ChannelHandle& handle);
49  virtual void OnError();
50
51  // IPC::Channel::Listener methods
52  virtual bool OnMessageReceived(const IPC::Message& message);
53  virtual void OnChannelError();
54
55 private:
56  friend class base::RefCountedThreadSafe<PluginDataRemover>;
57  friend class PluginDataRemoverTest;
58  ~PluginDataRemover();
59
60  void SignalDone();
61  void ConnectToChannel(const IPC::ChannelHandle& handle);
62  void OnClearSiteDataResult(bool success);
63  void OnTimeout();
64
65  std::string mime_type_;
66  bool is_removing_;
67  // The point in time when we start removing data.
68  base::Time remove_start_time_;
69  // The point in time from which on we remove data.
70  base::Time begin_time_;
71  scoped_ptr<base::WaitableEvent> event_;
72  // We own the channel, but it's used on the IO thread, so it needs to be
73  // deleted there as well.
74  IPC::Channel* channel_;
75};
76
77#endif  // CHROME_BROWSER_PLUGIN_DATA_REMOVER_H_
78