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_EXTENSIONS_EXTENSION_DEVTOOLS_MANAGER_H_
6#define CHROME_BROWSER_EXTENSIONS_EXTENSION_DEVTOOLS_MANAGER_H_
7#pragma once
8
9#include <map>
10#include <set>
11#include <string>
12
13#include "base/memory/linked_ptr.h"
14#include "base/memory/ref_counted.h"
15
16class ExtensionDevToolsBridge;
17class MessageLoop;
18class Profile;
19
20// This class manages the lifetimes of ExtensionDevToolsBridge objects.
21// The manager is owned by the Profile.
22//
23// The lifetime of an ExtensionDevToolsBridge object is determined by:
24//  * the existence of registered event handlers for the bridge's tab
25//  * the lifetime of the inspected tab
26//
27// The manager is alerted whenever an event listener is added or removed and
28// keeps track of the set of renderers with event listeners registered for each
29// tab.  A new bridge object is created for a tab when the first event listener
30// is registered on that tab.  A bridge object is destroyed when all event
31// listeners are removed, the inspected tab closes, or when the manager itself
32// is destroyed.
33
34class ExtensionDevToolsManager
35    : public base::RefCountedThreadSafe<ExtensionDevToolsManager> {
36 public:
37  // UI thread only:
38  explicit ExtensionDevToolsManager(Profile* profile);
39
40  void AddEventListener(const std::string& event_name,
41                        int render_process_id);
42
43  void RemoveEventListener(const std::string& event_name,
44                           int render_process_id);
45
46  void BridgeClosingForTab(int tab_id);
47
48 private:
49  friend class base::RefCountedThreadSafe<ExtensionDevToolsManager>;
50
51  ~ExtensionDevToolsManager();
52
53  // Map of tab IDs to the ExtensionDevToolsBridge connected to the tab
54  std::map<int, linked_ptr<ExtensionDevToolsBridge> > tab_id_to_bridge_;
55
56  // Map of tab IDs to the set of render_process_ids that have registered
57  // event handlers for the tab.
58  std::map<int, std::set<int> > tab_id_to_render_process_ids_;
59
60  Profile* profile_;
61  MessageLoop* ui_loop_;
62
63  DISALLOW_COPY_AND_ASSIGN(ExtensionDevToolsManager);
64};
65
66#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_DEVTOOLS_MANAGER_H_
67
68