DevTools: Extract target discovery and manipulation from DevToolsHttpHandlerImpl

chrome/browser/devtools/browser_list_tabcontents_provider.cc

Index: chrome/browser/devtools/browser_list_tabcontents_provider.cc
diff --git a/chrome/browser/devtools/browser_list_tabcontents_provider.cc b/chrome/browser/devtools/browser_list_tabcontents_provider.cc
index 1e43a493367bc87d7c4aa332ed9da65c1c5efa31..28de08565a9e9013a0d2d77c4f7473bd85daa447 100644
--- a/chrome/browser/devtools/browser_list_tabcontents_provider.cc
+++ b/chrome/browser/devtools/browser_list_tabcontents_provider.cc
@@ -6,6 +6,8 @@
 
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
@@ -20,15 +22,154 @@
 #include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_paths.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/devtools_target.h"
+#include "content/public/browser/favicon_status.h"
+#include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
 #include "grit/devtools_discovery_page_resources.h"
+#include "net/base/escape.h"
 #include "net/socket/tcp_listen_socket.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "ui/base/resource/resource_bundle.h"
 
+using content::DevToolsAgentHost;
 using content::DevToolsHttpHandlerDelegate;
+using content::DevToolsTarget;
 using content::RenderViewHost;
+using content::WebContents;
+
+namespace {
+
+const char kTargetTypePage[] = "page";
+const char kTargetTypeOther[] = "other";
+
+std::string GetExtensionName(WebContents* web_contents) {
+  Profile* profile =
+      Profile::FromBrowserContext(web_contents->GetBrowserContext());
+  if (!profile)
+    return std::string();
+
+  extensions::ExtensionHost* extension_host =
+      extensions::ExtensionSystem::Get(profile)->process_manager()->
+          GetBackgroundHostForExtension(web_contents->GetURL().host());
+
+  if (!extension_host || extension_host->host_contents() != web_contents)
+    return std::string();
+
+  return extension_host->extension()->name();
+}
+
+class Target : public content::DevToolsTarget {
+ public:
+  Target(WebContents* web_contents, bool is_tab);
+
+  virtual std::string GetId() const OVERRIDE { return id_; }
+  virtual std::string GetType() const OVERRIDE { return type_; }
+  virtual std::string GetTitle() const OVERRIDE { return title_; }
+  virtual std::string GetDescription() const OVERRIDE { return description_; }
+  virtual GURL GetUrl() const OVERRIDE { return url_; }
+  virtual GURL GetFaviconUrl() const OVERRIDE { return favicon_url_; }
+  virtual base::TimeTicks GetLastActivityTime() const OVERRIDE {
+    return last_activity_time_;
+  }
+  virtual bool IsAttached() const OVERRIDE {
+    return agent_host_->IsAttached();
+  }
+  virtual scoped_refptr<DevToolsAgentHost> GetAgentHost() const OVERRIDE {
+    return agent_host_;
+  }
+  virtual bool Activate() const OVERRIDE;
+  virtual bool Close() const OVERRIDE;
+
+ private:
+  scoped_refptr<DevToolsAgentHost> agent_host_;
+  std::string id_;
+  std::string type_;
+  std::string title_;
+  std::string description_;
+  GURL url_;
+  GURL favicon_url_;
+  base::TimeTicks last_activity_time_;
+};
+
+Target::Target(WebContents* web_contents, bool is_tab) {
+  agent_host_ =
+      DevToolsAgentHost::GetOrCreateFor(web_contents->GetRenderViewHost());
+  id_ = agent_host_->GetId();
+  type_ = is_tab ? kTargetTypePage : kTargetTypeOther;
+  description_ = GetExtensionName(web_contents);
+  title_ = UTF16ToUTF8(net::EscapeForHTML(web_contents->GetTitle()));
+  url_ = web_contents->GetURL();
+  content::NavigationController& controller = web_contents->GetController();
+  content::NavigationEntry* entry = controller.GetActiveEntry();
+  if (entry != NULL && entry->GetURL().is_valid())
+    favicon_url_ = entry->GetFavicon().url;
+  last_activity_time_ = web_contents->GetLastSelectedTime();
+}
+
+bool Target::Activate() const {
+  RenderViewHost* rvh = agent_host_->GetRenderViewHost();
+  if (!rvh)
+    return false;
+  WebContents* web_contents = WebContents::FromRenderViewHost(rvh);
+  if (!web_contents)
+    return false;
+  web_contents->GetDelegate()->ActivateContents(web_contents);
+  return true;
+}
+
+bool Target::Close() const {
+  RenderViewHost* rvh = agent_host_->GetRenderViewHost();
+  if (!rvh)
+    return false;
+  rvh->ClosePage();
+  return true;
+}
+
+class WorkerTarget : public content::DevToolsTarget {
+ public:
+  explicit WorkerTarget(const content::WorkerService::WorkerInfo& worker_info);
+
+  virtual std::string GetId() const OVERRIDE { return id_; }
+  virtual std::string GetType() const OVERRIDE { return "other"; }
+  virtual std::string GetTitle() const OVERRIDE { return title_; }
+  virtual std::string GetDescription() const OVERRIDE { return description_; }
+  virtual GURL GetUrl() const OVERRIDE { return url_; }
+  virtual GURL GetFaviconUrl() const OVERRIDE { return GURL(); }
+  virtual base::TimeTicks GetLastActivityTime() const OVERRIDE {
+    return base::TimeTicks();
+  }
+  virtual bool IsAttached() const OVERRIDE {
+    return agent_host_->IsAttached();
+  }
+  virtual scoped_refptr<DevToolsAgentHost> GetAgentHost() const OVERRIDE {
+    return agent_host_;
+  }
+  virtual bool Activate() const OVERRIDE { return false; }
+  virtual bool Close() const OVERRIDE { return false; }
+
+ private:
+  scoped_refptr<DevToolsAgentHost> agent_host_;
+  std::string id_;
+  std::string title_;
+  std::string description_;
+  GURL url_;
+};
+
+WorkerTarget::WorkerTarget(const content::WorkerService::WorkerInfo& worker) {
+  agent_host_ =
+      DevToolsAgentHost::GetForWorker(worker.process_id, worker.route_id);
+  id_ = agent_host_->GetId();
+  title_ = UTF16ToUTF8(net::EscapeForHTML(worker.name));
+  description_ =
+      base::StringPrintf("Worker pid:%d", base::GetProcId(worker.handle));
+  url_ = worker.url;
+}
+
+}  // namespace
 
 BrowserListTabContentsProvider::BrowserListTabContentsProvider(
     chrome::HostDesktopType host_desktop_type)
@@ -86,54 +227,35 @@ std::string BrowserListTabContentsProvider::GetPageThumbnailData(
   return std::string();
 }
 
-RenderViewHost* BrowserListTabContentsProvider::CreateNewTarget() {
+scoped_ptr<DevToolsTarget>
+BrowserListTabContentsProvider::CreateNewTarget() {
   const BrowserList* browser_list =
       BrowserList::GetInstance(host_desktop_type_);
-
+  WebContents* web_contents;
   if (browser_list->empty()) {
     chrome::NewEmptyWindow(ProfileManager::GetLastUsedProfile(),
         host_desktop_type_);
-    return browser_list->empty() ? NULL :
-           browser_list->get(0)->tab_strip_model()->GetActiveWebContents()->
-               GetRenderViewHost();
-  }
-
-  content::WebContents* web_contents = chrome::AddSelectedTabWithURL(
+    if (browser_list->empty())
+      return scoped_ptr<DevToolsTarget>();
+    web_contents =
+        browser_list->get(0)->tab_strip_model()->GetActiveWebContents();
+  } else {
+    web_contents = chrome::AddSelectedTabWithURL(
       browser_list->get(0),
       GURL(content::kAboutBlankURL),
       content::PAGE_TRANSITION_LINK);
-  return web_contents->GetRenderViewHost();
-}
-
-content::DevToolsHttpHandlerDelegate::TargetType
-BrowserListTabContentsProvider::GetTargetType(content::RenderViewHost* rvh) {
-  for (TabContentsIterator it; !it.done(); it.Next())
-    if (rvh == it->GetRenderViewHost())
-      return kTargetTypeTab;
-
-  return kTargetTypeOther;
+  }
+  return scoped_ptr<DevToolsTarget>(new Target(web_contents, true));
 }
-
-std::string BrowserListTabContentsProvider::GetViewDescription(
-    content::RenderViewHost* rvh) {
-  content::WebContents* web_contents =
-      content::WebContents::FromRenderViewHost(rvh);
-  if (!web_contents)
-    return std::string();
-
-  Profile* profile =
-      Profile::FromBrowserContext(web_contents->GetBrowserContext());
-  if (!profile)
-    return std::string();
-
-  extensions::ExtensionHost* extension_host =
-      extensions::ExtensionSystem::Get(profile)->process_manager()->
-          GetBackgroundHostForExtension(web_contents->GetURL().host());
-
-  if (!extension_host || extension_host->host_contents() != web_contents)
-    return std::string();
-
-  return extension_host->extension()->name();
+void BrowserListTabContentsProvider::EnumerateTargets(TargetCallback callback) {
+  content::BrowserThread::PostTaskAndReplyWithResult(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(&BrowserListTabContentsProvider::GetWorkerInfo,
+                 base::Unretained(this)),
+      base::Bind(&BrowserListTabContentsProvider::RespondWithTargetList,
+                 base::Unretained(this),
+                 callback));
 }
 
 #if defined(DEBUG_DEVTOOLS)
@@ -158,3 +280,33 @@ BrowserListTabContentsProvider::CreateSocketForTethering(
   return scoped_ptr<net::StreamListenSocket>();
 }
 #endif  // defined(DEBUG_DEVTOOLS)
+
+BrowserListTabContentsProvider::WorkerInfoList
+BrowserListTabContentsProvider::GetWorkerInfo() {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+  return content::WorkerService::GetInstance()->GetWorkers();
+}
+
+void BrowserListTabContentsProvider::RespondWithTargetList(
+    TargetCallback callback, const WorkerInfoList& worker_info_list) {
+  std::set<RenderViewHost*> tab_rvhs;
+  for (TabContentsIterator it; !it.done(); it.Next())
+    tab_rvhs.insert(it->GetRenderViewHost());
+
+  TargetList targets;
+
+  std::vector<RenderViewHost*> rvh_list =
+      content::DevToolsAgentHost::GetValidRenderViewHosts();
+  for (std::vector<RenderViewHost*>::iterator it = rvh_list.begin();
+       it != rvh_list.end(); ++it) {
+    bool is_tab = tab_rvhs.find(*it) != tab_rvhs.end();
+    WebContents* web_contents = WebContents::FromRenderViewHost(*it);
+    if (web_contents)
+      targets.push_back(new Target(web_contents, is_tab));
+  }
+
+  for (size_t i = 0; i < worker_info_list.size(); ++i)
+    targets.push_back(new WorkerTarget(worker_info_list[i]));
+
+  callback.Run(targets);
+}