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#include "chrome/browser/extensions/extension_devtools_bridge.h"
6
7#include "base/json/json_writer.h"
8#include "base/message_loop.h"
9#include "base/string_util.h"
10#include "base/stringprintf.h"
11#include "base/values.h"
12#include "chrome/browser/debugger/devtools_manager.h"
13#include "chrome/browser/extensions/extension_devtools_events.h"
14#include "chrome/browser/extensions/extension_devtools_manager.h"
15#include "chrome/browser/extensions/extension_event_router.h"
16#include "chrome/browser/extensions/extension_tabs_module.h"
17#include "chrome/browser/profiles/profile.h"
18#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
19#include "chrome/common/devtools_messages.h"
20#include "content/browser/tab_contents/tab_contents.h"
21
22ExtensionDevToolsBridge::ExtensionDevToolsBridge(int tab_id,
23                                                 Profile* profile)
24    : tab_id_(tab_id),
25      profile_(profile),
26      on_page_event_name_(
27          ExtensionDevToolsEvents::OnPageEventNameForTab(tab_id)),
28      on_tab_close_event_name_(
29          ExtensionDevToolsEvents::OnTabCloseEventNameForTab(tab_id)) {
30  extension_devtools_manager_ = profile_->GetExtensionDevToolsManager();
31  DCHECK(extension_devtools_manager_.get());
32}
33
34ExtensionDevToolsBridge::~ExtensionDevToolsBridge() {
35}
36
37static std::string FormatDevToolsMessage(int id, const std::string& method) {
38  DictionaryValue message;
39  message.SetInteger("id", id);
40  message.SetString("method", method);
41
42  std::string json;
43  base::JSONWriter::Write(&message, false, &json);
44  return json;
45}
46
47bool ExtensionDevToolsBridge::RegisterAsDevToolsClientHost() {
48  DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
49
50  Browser* browser;
51  TabStripModel* tab_strip;
52  TabContentsWrapper* contents;
53  int tab_index;
54  if (ExtensionTabUtil::GetTabById(tab_id_, profile_, true,
55                                   &browser, &tab_strip,
56                                   &contents, &tab_index)) {
57    DevToolsManager* devtools_manager = DevToolsManager::GetInstance();
58    if (devtools_manager->GetDevToolsClientHostFor(contents->
59            render_view_host()) != NULL)
60      return false;
61
62    devtools_manager->RegisterDevToolsClientHostFor(
63        contents->render_view_host(), this);
64
65    // Following messages depend on inspector protocol that is not yet
66    // finalized.
67
68    // 1. Report front-end is loaded.
69    devtools_manager->ForwardToDevToolsAgent(
70        this,
71        DevToolsAgentMsg_FrontendLoaded());
72
73    // 2. Start timeline profiler.
74    devtools_manager->ForwardToDevToolsAgent(
75        this,
76        DevToolsAgentMsg_DispatchOnInspectorBackend(
77            FormatDevToolsMessage(2, "Timeline.start")));
78
79    // 3. Enable network resource tracking.
80    devtools_manager->ForwardToDevToolsAgent(
81        this,
82        DevToolsAgentMsg_DispatchOnInspectorBackend(
83            FormatDevToolsMessage(3, "Network.enable")));
84
85    return true;
86  }
87  return false;
88}
89
90void ExtensionDevToolsBridge::UnregisterAsDevToolsClientHost() {
91  DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
92
93  NotifyCloseListener();
94}
95
96// If the tab we are looking at is going away then we fire a closing event at
97// the extension.
98void ExtensionDevToolsBridge::InspectedTabClosing() {
99  DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
100
101  // TODO(knorton): Remove this event in favor of the standard tabs.onRemoved
102  // event in extensions.
103  std::string json("[{}]");
104  profile_->GetExtensionEventRouter()->DispatchEventToRenderers(
105      on_tab_close_event_name_, json, profile_, GURL());
106
107  // This may result in this object being destroyed.
108  extension_devtools_manager_->BridgeClosingForTab(tab_id_);
109}
110
111void ExtensionDevToolsBridge::SendMessageToClient(const IPC::Message& msg) {
112  IPC_BEGIN_MESSAGE_MAP(ExtensionDevToolsBridge, msg)
113    IPC_MESSAGE_HANDLER(DevToolsClientMsg_DispatchOnInspectorFrontend,
114                        OnDispatchOnInspectorFrontend);
115    IPC_MESSAGE_UNHANDLED_ERROR()
116  IPC_END_MESSAGE_MAP()
117}
118
119void ExtensionDevToolsBridge::TabReplaced(TabContentsWrapper* new_tab) {
120  DCHECK_EQ(profile_, new_tab->profile());
121  // We don't update the tab id as it needs to remain the same so that we can
122  // properly unregister.
123}
124
125void ExtensionDevToolsBridge::OnDispatchOnInspectorFrontend(
126    const std::string& data) {
127  DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
128
129  std::string json = base::StringPrintf("[%s]", data.c_str());
130  profile_->GetExtensionEventRouter()->DispatchEventToRenderers(
131      on_page_event_name_, json, profile_, GURL());
132}
133