DevTools: convert about:workers into about:inspect

chrome/browser/ui/webui/inspect_ui.cc

+// Copyright (c) 2012 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/ui/webui/inspect_ui.h"
+
+#include <set>
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/json/json_writer.h"
+#include "base/memory/ref_counted_memory.h"
+#include "base/string_number_conversions.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/debugger/devtools_window.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
+#include "chrome/browser/ui/webui/chrome_url_data_manager_backend.h"
+#include "chrome/browser/ui/webui/chrome_web_ui_data_source.h"
+#include "chrome/common/url_constants.h"
+#include "content/public/browser/child_process_data.h"
+#include "content/public/browser/devtools_agent_host_registry.h"
+#include "content/public/browser/devtools_client_host.h"
+#include "content/public/browser/devtools_manager.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/favicon_status.h"
+#include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/notification_source.h"
+#include "content/public/browser/notification_types.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/render_view_host_delegate.h"
+#include "content/public/browser/render_widget_host.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_ui.h"
+#include "content/public/browser/worker_service.h"
+#include "content/public/browser/worker_service_observer.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_ui_message_handler.h"
+#include "content/public/common/process_type.h"
+#include "grit/browser_resources.h"
+#include "grit/generated_resources.h"
+#include "net/base/escape.h"
+#include "ui/base/resource/resource_bundle.h"
+
+using content::BrowserThread;
+using content::ChildProcessData;
+using content::DevToolsAgentHost;
+using content::DevToolsAgentHostRegistry;
+using content::DevToolsClientHost;
+using content::DevToolsManager;
+using content::RenderProcessHost;
+using content::RenderViewHost;
+using content::RenderViewHostDelegate;
+using content::RenderWidgetHost;
+using content::WebContents;
+using content::WebUIMessageHandler;
+using content::WorkerService;
+using content::WorkerServiceObserver;
+
+static const char kDataFile[] = "targets-data.json";
+
+static const char kExtensionTargetType[]  = "extension";
+static const char kPageTargetType[]  = "page";
+static const char kWorkerTargetType[]  = "worker";
+
+static const char kInspectCommand[]  = "inspect";
+static const char kTerminateCommand[]  = "terminate";
+
+static const char kTargetTypeField[]  = "type";
+static const char kAttachedField[]  = "attached";
+static const char kProcessIdField[]  = "processId";
+static const char kRouteIdField[]  = "routeId";
+static const char kUrlField[]  = "url";
+static const char kNameField[]  = "name";
+static const char kFaviconUrlField[] = "favicon_url";
+static const char kPidField[]  = "pid";
+
+namespace {
+
+DictionaryValue* BuildTargetDescriptor(
+    const std::string& target_type,
+    bool attached,
+    const GURL& url,
+    const std::string& name,
+    const GURL& favicon_url,
+    int process_id,
+    int route_id,
+    base::ProcessHandle handle = base::kNullProcessHandle) {
+  DictionaryValue* target_data = new DictionaryValue();
+  target_data->SetString(kTargetTypeField, target_type);
+  target_data->SetBoolean(kAttachedField, attached);
+  target_data->SetInteger(kProcessIdField, process_id);
+  target_data->SetInteger(kRouteIdField, route_id);
+  target_data->SetString(kUrlField, url.spec());
+  target_data->SetString(kNameField, net::EscapeForHTML(name));
+  target_data->SetInteger(kPidField, base::GetProcId(handle));
+  target_data->SetString(kFaviconUrlField, favicon_url.spec());
+
+  return target_data;
+}
+
+bool HasClientHost(RenderViewHost* rvh) {
+  if (!DevToolsAgentHostRegistry::HasDevToolsAgentHost(rvh))
+    return false;
+
+  DevToolsAgentHost* agent =
+      DevToolsAgentHostRegistry::GetDevToolsAgentHost(rvh);
+  return !!DevToolsManager::GetInstance()->GetDevToolsClientHostFor(agent);
+}
+
+DictionaryValue* BuildTargetDescriptor(RenderViewHost* rvh, bool is_tab) {
+  RenderViewHostDelegate* rvh_delegate = rvh->GetDelegate();
+  WebContents* web_contents = rvh_delegate->GetAsWebContents();
+  std::string title;
+  std::string target_type = is_tab ? kPageTargetType : "";
+  GURL favicon_url;
+  if (web_contents) {
+    title = UTF16ToUTF8(web_contents->GetTitle());
+    content::NavigationController& controller = web_contents->GetController();
+    content::NavigationEntry* entry = controller.GetActiveEntry();
+    if (entry != NULL && entry->GetURL().is_valid())
+      favicon_url = entry->GetFavicon().url;
+
+    Profile* profile = Profile::FromBrowserContext(
+        web_contents->GetBrowserContext());
+    if (profile) {
+      ExtensionService* extension_service = profile->GetExtensionService();
+      const Extension* extension = extension_service->extensions()->GetByID(
+          web_contents->GetURL().host());
+      if (extension) {
+        target_type = kExtensionTargetType;
+        title = extension->name();
+      }
+    }
+  }
+
+  return BuildTargetDescriptor(target_type,
+                               HasClientHost(rvh),
+                               rvh_delegate->GetURL(),
+                               title,
+                               favicon_url,
+                               rvh->GetProcess()->GetID(),
+                               rvh->GetRoutingID());
+}
+
+class InspectDataSource : public ChromeWebUIDataSource {
+ public:
+  InspectDataSource();
+
+  virtual void StartDataRequest(const std::string& path,
+                                bool is_incognito,
+                                int request_id);
+ private:
+  ~InspectDataSource() {}
+  void SendSharedWorkersData(int request_id, ListValue* rvh_list);
+  DISALLOW_COPY_AND_ASSIGN(InspectDataSource);
+};
+
+InspectDataSource::InspectDataSource()
+    : ChromeWebUIDataSource(chrome::kChromeUIInspectHost,
+                            MessageLoop::current()) {
+  add_resource_path("inspect.js", IDR_INSPECT_JS);
+  set_default_resource(IDR_INSPECT_HTML);
+}
+
+void InspectDataSource::StartDataRequest(const std::string& path,
+                                           bool is_incognito,
+                                           int request_id) {
+  if (path != kDataFile) {
+    ChromeWebUIDataSource::StartDataRequest(path, is_incognito, request_id);
+    return;
+  }
+
+  std::set<RenderViewHost*> tab_rvhs;
+  for (TabContentsIterator it; !it.done(); ++it)
+    tab_rvhs.insert(it->web_contents()->GetRenderViewHost());
+
+  scoped_ptr<ListValue> rvh_list(new ListValue());
+
+  for (RenderProcessHost::iterator it(RenderProcessHost::AllHostsIterator());
+       !it.IsAtEnd(); it.Advance()) {
+    RenderProcessHost* render_process_host = it.GetCurrentValue();
+    DCHECK(render_process_host);
+
+    // Ignore processes that don't have a connection, such as crashed tabs.
+    if (!render_process_host->HasConnection())
+      continue;
+
+    RenderProcessHost::RenderWidgetHostsIterator rwit(
+        render_process_host->GetRenderWidgetHostsIterator());
+    for (; !rwit.IsAtEnd(); rwit.Advance()) {
+      const RenderWidgetHost* widget = rwit.GetCurrentValue();
+      DCHECK(widget);
+      if (!widget || !widget->IsRenderView())
+        continue;
+
+      RenderViewHost* rvh =
+          RenderViewHost::From(const_cast<RenderWidgetHost*>(widget));
+
+      bool is_tab = tab_rvhs.find(rvh) != tab_rvhs.end();
+      rvh_list->Append(BuildTargetDescriptor(rvh, is_tab));
+    }
+  }
+
+  BrowserThread::PostTask(
+      BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(&InspectDataSource::SendSharedWorkersData,
+                 this,
+                 request_id,
+                 base::Owned(rvh_list.release())));
+}
+
+void InspectDataSource::SendSharedWorkersData(int request_id,
+                                                ListValue* rvh_list) {
+  std::vector<WorkerService::WorkerInfo> worker_info =
+      WorkerService::GetInstance()->GetWorkers();
+  for (size_t i = 0; i < worker_info.size(); ++i) {
+    rvh_list->Append(BuildTargetDescriptor(
+        kWorkerTargetType,
+        false,
+        worker_info[i].url,
+        UTF16ToUTF8(worker_info[i].name),
+        GURL(),
+        worker_info[i].process_id,
+        worker_info[i].route_id,
+        worker_info[i].handle));
+  }
+
+  std::string json_string;
+  base::JSONWriter::Write(rvh_list, &json_string);
+
+  SendResponse(request_id, base::RefCountedString::TakeString(&json_string));
+}
+
+class InspectMessageHandler : public WebUIMessageHandler {
+ public:
+  InspectMessageHandler() {}
+  virtual ~InspectMessageHandler() {}
+
+ private:
+  // WebUIMessageHandler implementation.
+  virtual void RegisterMessages() OVERRIDE;
+
+  // Callback for "openDevTools" message.
+  void HandleInspectCommand(const ListValue* args);
+  void HandleTerminateCommand(const ListValue* args);
+
+  DISALLOW_COPY_AND_ASSIGN(InspectMessageHandler);
+};
+
+void InspectMessageHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(kInspectCommand,
+      base::Bind(&InspectMessageHandler::HandleInspectCommand,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(kTerminateCommand,
+      base::Bind(&InspectMessageHandler::HandleTerminateCommand,
+                 base::Unretained(this)));
+}
+
+void InspectMessageHandler::HandleInspectCommand(const ListValue* args) {
+  std::string process_id_str;
+  std::string route_id_str;
+  int process_id;
+  int route_id;
+  CHECK(args->GetSize() == 2);
+  CHECK(args->GetString(0, &process_id_str));
+  CHECK(args->GetString(1, &route_id_str));
+  CHECK(base::StringToInt(process_id_str,
+                          &process_id));
+  CHECK(base::StringToInt(route_id_str, &route_id));
+
+  Profile* profile = Profile::FromWebUI(web_ui());
+  if (!profile)
+    return;
+
+  RenderViewHost* rvh = RenderViewHost::FromID(process_id, route_id);
+  if (rvh) {
+    DevToolsWindow::OpenDevToolsWindow(rvh);
+    return;
+  }
+
+  DevToolsAgentHost* agent_host =
+      DevToolsAgentHostRegistry::GetDevToolsAgentHostForWorker(process_id,
+                                                               route_id);
+  if (agent_host)
+    DevToolsWindow::OpenDevToolsWindowForWorker(profile, agent_host);
+}
+
+static void TerminateWorker(int process_id, int route_id) {
+  WorkerService::GetInstance()->TerminateWorker(process_id, route_id);
+}
+
+void InspectMessageHandler::HandleTerminateCommand(const ListValue* args) {
+  std::string process_id_str;
+  std::string route_id_str;
+  int process_id;
+  int route_id;
+  CHECK(args->GetSize() == 2);
+  CHECK(args->GetString(0, &process_id_str));
+  CHECK(args->GetString(1, &route_id_str));
+  CHECK(base::StringToInt(process_id_str,
+                          &process_id));
+  CHECK(base::StringToInt(route_id_str, &route_id));
+
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      base::Bind(&TerminateWorker, process_id, route_id));
+}
+
+}  // namespace
+
+class InspectUI::WorkerCreationDestructionListener
+    : public WorkerServiceObserver,
+      public base::RefCountedThreadSafe<WorkerCreationDestructionListener> {
+ public:
+  explicit WorkerCreationDestructionListener(InspectUI* workers_ui)
+      : discovery_ui_(workers_ui) {
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&WorkerCreationDestructionListener::RegisterObserver,
+                   this));
+  }
+
+  void InspectUIDestroyed() {
+    discovery_ui_ = NULL;
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&WorkerCreationDestructionListener::UnregisterObserver,
+                   this));
+  }
+
+ private:
+  friend class base::RefCountedThreadSafe<WorkerCreationDestructionListener>;
+  virtual ~WorkerCreationDestructionListener() {

[apavlov, 2012/03/19 16:16:47]

The style for this is to use "virtual ~...() {}" (closing brace on the same
line, no space in between).

+  }
+
+  virtual void WorkerCreated(
+      const GURL& url,
+      const string16& name,
+      int process_id,
+      int route_id) OVERRIDE {
+    BrowserThread::PostTask(
+        BrowserThread::UI, FROM_HERE,
+        base::Bind(&WorkerCreationDestructionListener::NotifyItemsChanged,
+                   this));
+  }
+
+  virtual void WorkerDestroyed(int process_id, int route_id) OVERRIDE {
+    BrowserThread::PostTask(
+        BrowserThread::UI, FROM_HERE,
+        base::Bind(&WorkerCreationDestructionListener::NotifyItemsChanged,
+                   this));
+  }
+
+  void NotifyItemsChanged() {
+    if (discovery_ui_)
+      discovery_ui_->RefreshUI();
+  }
+
+  void RegisterObserver() {
+    WorkerService::GetInstance()->AddObserver(this);
+  }
+
+  void UnregisterObserver() {
+    WorkerService::GetInstance()->RemoveObserver(this);
+  }
+
+  InspectUI* discovery_ui_;
+};
+
+InspectUI::InspectUI(content::WebUI* web_ui)
+    : WebUIController(web_ui),
+      observer_(new WorkerCreationDestructionListener(this)) {
+  web_ui->AddMessageHandler(new InspectMessageHandler());
+
+  InspectDataSource* html_source = new InspectDataSource();
+  // Set up the chrome://workers/ source.

[apavlov, 2012/03/19 16:16:47]

Is this comment still correct?

+  Profile* profile = Profile::FromWebUI(web_ui);
+  profile->GetChromeURLDataManager()->AddDataSource(html_source);
+
+  registrar_.Add(this,
+                 content::NOTIFICATION_WEB_CONTENTS_CONNECTED,
+                 content::NotificationService::AllSources());
+  registrar_.Add(this,
+                 content::NOTIFICATION_WEB_CONTENTS_DISCONNECTED,
+                 content::NotificationService::AllSources());
+  registrar_.Add(this,
+                 content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
+                 content::NotificationService::AllSources());
+}
+
+InspectUI::~InspectUI() {
+  observer_->InspectUIDestroyed();
+  observer_ = NULL;
+}
+
+void InspectUI::RefreshUI() {
+  web_ui()->CallJavascriptFunction("populateLists");
+}
+
+void InspectUI::Observe(int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+  RefreshUI();
+}