Implements extensions devtools API

chrome/browser/extensions/extension_devtools_bridge.cc

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/extension_devtools_bridge.h"
+
+#include "base/message_loop.h"
+#include "base/string_util.h"
+#include "chrome/browser/debugger/devtools_manager.h"
+#include "chrome/browser/extensions/extension_devtools_events.h"
+#include "chrome/browser/extensions/extension_devtools_manager.h"
+#include "chrome/browser/extensions/extension_tabs_module.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/common/devtools_messages.h"
+
+ExtensionDevToolsBridge::ExtensionDevToolsBridge(int tab_id,
+                                                 Profile* profile)
+    : tab_id_(tab_id),
+      inspected_rvh_(NULL),
+      profile_(profile),
+      on_page_event_name_(
+          ExtensionDevToolsEvents::OnPageEventNameForTab(tab_id)),
+      on_tab_url_change_event_name_(
+          ExtensionDevToolsEvents::OnTabUrlChangeEventNameForTab(tab_id)),
+      on_tab_close_event_name_(
+          ExtensionDevToolsEvents::OnTabCloseEventNameForTab(tab_id)) {
+  extension_devtools_manager_ = profile_->GetExtensionDevToolsManager();
+  DCHECK(extension_devtools_manager_.get());
+}
+
+ExtensionDevToolsBridge::~ExtensionDevToolsBridge() {
+}
+
+bool ExtensionDevToolsBridge::RegisterAsDevToolsClientHost() {
+  DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
+
+  Browser* browser;
+  TabStripModel* tab_strip;
+  TabContents* contents;
+  int tab_index;
+  if (ExtensionTabUtil::GetTabById(tab_id_, profile_, &browser, &tab_strip,
+                                   &contents, &tab_index)) {
+    inspected_rvh_ = contents->render_view_host();
+    DevToolsManager::GetInstance()->RegisterDevToolsClientHostFor(
+        inspected_rvh_, this);
+    return true;
+  }
+  return false;
+}
+
+void ExtensionDevToolsBridge::UnregisterAsDevToolsClientHost() {
+  DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
+
+  if (inspected_rvh_) {
+    DevToolsManager::GetInstance()->UnregisterDevToolsClientHostFor(
+        inspected_rvh_);
+    inspected_rvh_ = NULL;
+  }
+}
+
+// If the tab we are looking at is going away then we fire a closing event at
+// the extension.
+void ExtensionDevToolsBridge::InspectedTabClosing() {
+  DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
+
+  std::string json("[{}]");
+  profile_->GetExtensionMessageService()->
+      DispatchEventToRenderers(on_tab_close_event_name_, json);
+
+  // This may result in this object being destroyed.
+  extension_devtools_manager_->BridgeClosingForTab(tab_id_);
+}
+
+void ExtensionDevToolsBridge::SendMessageToClient(const IPC::Message& msg) {
+  IPC_BEGIN_MESSAGE_MAP(ExtensionDevToolsBridge, msg)
+    IPC_MESSAGE_HANDLER(DevToolsClientMsg_RpcMessage, OnRpcMessage);
+    IPC_MESSAGE_UNHANDLED_ERROR()
+  IPC_END_MESSAGE_MAP()
+}
+
+static const char kTimelineAgentClassName[] = "TimelineAgentClass";
+static const char kPageEventMessageName[] = "PageEventMessage";
+static const char kTabUrlChangeEventMessageName[] = "TabUrlChangeEventMessage";
+
+void ExtensionDevToolsBridge::OnRpcMessage(const std::string& class_name,
+                                           const std::string& message_name,
+                                           const std::string& msg) {
+  DCHECK_EQ(MessageLoop::current()->type(), MessageLoop::TYPE_UI);
+  // TODO(jamesr): Update the filtering and message creation logic once
+  // the TimelineAgent lands in WebKit.
+  if (class_name == kTimelineAgentClassName) {
+    if (message_name == kPageEventMessageName) {
+      std::string json = StringPrintf("[{\"record\": \"%s\"}]", msg.c_str());
+      profile_->GetExtensionMessageService()->
+          DispatchEventToRenderers(on_page_event_name_, json);
+    } else if (message_name == kTabUrlChangeEventMessageName) {
+      std::string json = StringPrintf("[{\"record\": \"%s\"}]", msg.c_str());
+      profile_->GetExtensionMessageService()->
+          DispatchEventToRenderers(on_tab_url_change_event_name_, json);
+    }
+  }
+}
+