DevTools: Extract target discovery and manipulation from DevToolsHttpHandlerImpl

chrome/browser/android/dev_tools_server.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/android/dev_tools_server.h"
 
 #include <pwd.h>
 #include <cstring>
 
 #include "base/android/jni_string.h"
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/devtools/devtools_adb_bridge.h"
 #include "chrome/browser/history/top_sites.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/android/tab_model/tab_model.h"
 #include "chrome/browser/ui/android/tab_model/tab_model_list.h"
 #include "content/public/browser/android/devtools_auth.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/devtools_http_handler.h"
 #include "content/public/browser/devtools_http_handler_delegate.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/browser/web_contents_delegate.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "grit/devtools_discovery_page_resources.h"
 #include "jni/DevToolsServer_jni.h"
+#include "net/base/escape.h"
 #include "net/socket/unix_domain_socket_posix.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "webkit/common/user_agent/user_agent_util.h"
 
+using content::DevToolsAgentHost;
+using content::RenderViewHost;
+using content::WebContents;
+
 namespace {
 
 const char kFrontEndURL[] =
     "http://chrome-devtools-frontend.appspot.com/serve_rev/%s/devtools.html";
 const char kDefaultSocketNamePrefix[] = "chrome";
 const char kTetheringSocketName[] = "chrome_devtools_tethering_%d_%d";
 
+const char kTargetTypePage[] = "page";
+
+class Target : public content::DevToolsTarget {
+ public:
+  explicit Target(WebContents* web_contents);
+
+  virtual std::string GetId() const OVERRIDE { return id_; }
+  virtual std::string GetType() const OVERRIDE { return kTargetTypePage; }
+  virtual std::string GetTitle() const OVERRIDE { return title_; }
+  virtual std::string GetDescription() const OVERRIDE { return std::string(); }
+  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 title_;
+  GURL url_;
+  GURL favicon_url_;
+  base::TimeTicks last_activity_time_;
+};
+
+Target::Target(WebContents* web_contents) {
+  agent_host_ =
+      DevToolsAgentHost::GetOrCreateFor(web_contents->GetRenderViewHost());
+  id_ = agent_host_->GetId();
+  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;
+}
+
 // Delegate implementation for the devtools http handler on android. A new
 // instance of this gets created each time devtools is enabled.
 class DevToolsServerDelegate : public content::DevToolsHttpHandlerDelegate {
  public:
   DevToolsServerDelegate()
       : last_tethering_socket_(0) {
   }
 
   virtual std::string GetDiscoveryPageHTML() OVERRIDE {
     // TopSites updates itself after a delay. Ask TopSites to update itself
@@ skipping 20 matching lines @@
     history::TopSites* top_sites = profile->GetTopSites();
     if (top_sites) {
       scoped_refptr<base::RefCountedMemory> data;
       if (top_sites->GetPageThumbnail(url, false, &data))
         return std::string(reinterpret_cast<const char*>(data->front()),
                            data->size());
     }
     return "";
   }
 
-  virtual content::RenderViewHost* CreateNewTarget() OVERRIDE {
+  virtual scoped_ptr<content::DevToolsTarget> CreateNewTarget() OVERRIDE {
     Profile* profile =
         g_browser_process->profile_manager()->GetDefaultProfile();
     TabModel* tab_model = TabModelList::GetTabModelWithProfile(profile);
     if (!tab_model)
-      return NULL;
-    content::WebContents* web_contents =
+      return scoped_ptr<content::DevToolsTarget>();
+    WebContents* web_contents =
         tab_model->CreateTabForTesting(GURL(content::kAboutBlankURL));
     if (!web_contents)
-      return NULL;
-    return web_contents->GetRenderViewHost();
+      return scoped_ptr<content::DevToolsTarget>();
+    return scoped_ptr<content::DevToolsTarget>(new Target(web_contents));
   }
 
-  virtual TargetType GetTargetType(content::RenderViewHost*) OVERRIDE {
-    return kTargetTypeTab;
-  }
-
-  virtual std::string GetViewDescription(content::RenderViewHost*) OVERRIDE {
-    return "";
+  virtual void EnumerateTargets(TargetCallback callback) OVERRIDE {
+    TargetList targets;
+    std::vector<RenderViewHost*> rvh_list =
+        DevToolsAgentHost::GetValidRenderViewHosts();
+    for (std::vector<RenderViewHost*>::iterator it = rvh_list.begin();
+         it != rvh_list.end(); ++it) {
+      WebContents* web_contents = WebContents::FromRenderViewHost(*it);
+      if (web_contents)
+        targets.push_back(new Target(web_contents));
+    }
+    callback.Run(targets);
   }
 
   virtual scoped_ptr<net::StreamListenSocket> CreateSocketForTethering(
       net::StreamListenSocket::Delegate* delegate,
       std::string* name) OVERRIDE {
     *name = base::StringPrintf(
         kTetheringSocketName, getpid(), ++last_tethering_socket_);
     return net::UnixDomainSocket::CreateAndListenWithAbstractNamespace(
                *name,
                "",
@@ skipping 99 matching lines @@
                                       jobject obj,
                                       jint server,
                                       jboolean enabled) {
   DevToolsServer* devtools_server = reinterpret_cast<DevToolsServer*>(server);
   if (enabled) {
     devtools_server->Start();
   } else {
     devtools_server->Stop();
   }
 }