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      1 // Copyright (c) 2009 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 #include "chrome/browser/extensions/extension_devtools_manager.h"
      6 
      7 #include "base/message_loop.h"
      8 #include "base/string_util.h"
      9 #include "base/task.h"
     10 #include "chrome/browser/extensions/extension_devtools_bridge.h"
     11 #include "chrome/browser/extensions/extension_devtools_events.h"
     12 
     13 ExtensionDevToolsManager::ExtensionDevToolsManager(Profile* profile)
     14     : profile_(profile),
     15       ui_loop_(NULL) {
     16   DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
     17   ui_loop_ = MessageLoop::current();
     18 }
     19 
     20 ExtensionDevToolsManager::~ExtensionDevToolsManager() {
     21 }
     22 
     23 void ExtensionDevToolsManager::AddEventListener(const std::string& event_name,
     24                                                 int render_process_id) {
     25   int tab_id;
     26   if (ExtensionDevToolsEvents::IsDevToolsEventName(event_name, &tab_id)) {
     27     // Add the renderer process ID to the set of processes interested
     28     // in this tab.
     29     tab_id_to_render_process_ids_[tab_id].insert(render_process_id);
     30     if (tab_id_to_bridge_.count(tab_id) == 0) {
     31       // Create a new bridge for this tab if there isn't one already.
     32       linked_ptr<ExtensionDevToolsBridge> bridge(
     33           new ExtensionDevToolsBridge(tab_id, profile_));
     34       if (bridge->RegisterAsDevToolsClientHost()) {
     35         tab_id_to_bridge_[tab_id] = bridge;
     36       }
     37     }
     38   }
     39 }
     40 
     41 void ExtensionDevToolsManager::RemoveEventListener(
     42     const std::string& event_name,
     43     int render_process_id) {
     44   int tab_id;
     45   if (ExtensionDevToolsEvents::IsDevToolsEventName(event_name, &tab_id)) {
     46     std::map<int, std::set<int> >::iterator it =
     47         tab_id_to_render_process_ids_.find(tab_id);
     48     if (it != tab_id_to_render_process_ids_.end()) {
     49       // Remove the process from the set of processes interested in this tab.
     50       it->second.erase(render_process_id);
     51       if (it->second.empty()) {
     52         // No renderers have registered listeners for this tab, so kill the
     53         // bridge if there is one.
     54         if (tab_id_to_bridge_.count(tab_id) != 0) {
     55           linked_ptr<ExtensionDevToolsBridge> bridge(tab_id_to_bridge_[tab_id]);
     56           bridge->UnregisterAsDevToolsClientHost();
     57           tab_id_to_bridge_.erase(tab_id);
     58         }
     59       }
     60     }
     61   }
     62 }
     63 
     64 void ExtensionDevToolsManager::BridgeClosingForTab(int tab_id) {
     65   if (tab_id_to_bridge_.count(tab_id) != 0) {
     66     linked_ptr<ExtensionDevToolsBridge> bridge(tab_id_to_bridge_[tab_id]);
     67     bridge->UnregisterAsDevToolsClientHost();
     68     tab_id_to_bridge_.erase(tab_id);
     69   }
     70   tab_id_to_render_process_ids_.erase(tab_id);
     71 }
     72 
     73