[DevTools] Migrate android to devtools_discovery.

chrome/browser/android/dev_tools_discovery_provider_android.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2015 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_manager_delegate_android.h"
+#include "chrome/browser/android/dev_tools_discovery_provider_android.h"
 
 #include "base/basictypes.h"
+#include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/android/tab_android.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/history/top_sites_factory.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 "components/history/core/browser/top_sites.h"
+#include "components/devtools_discovery/basic_target_descriptor.h"
+#include "components/devtools_discovery/devtools_discovery_manager.h"
 #include "content/public/browser/devtools_agent_host.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/web_contents.h"
 
 using content::DevToolsAgentHost;
 using content::WebContents;
 
 namespace {
 
-const char kTargetTypePage[] = "page";
-const char kTargetTypeServiceWorker[] = "service_worker";
-const char kTargetTypeOther[] = "other";
-
 GURL GetFaviconURLForContents(WebContents* web_contents) {
   content::NavigationController& controller = web_contents->GetController();
   content::NavigationEntry* entry = controller.GetActiveEntry();
   if (entry != NULL && entry->GetURL().is_valid())
     return entry->GetFavicon().url;
   return GURL();
 }
 
-GURL GetFaviconURLForAgentHost(
-    scoped_refptr<DevToolsAgentHost> agent_host) {
-  if (WebContents* web_contents = agent_host->GetWebContents())
-    return GetFaviconURLForContents(web_contents);
-  return GURL();
-}
+class TabDescriptor : public devtools_discovery::DevToolsTargetDescriptor {
+ public:
+  static TabDescriptor* CreateForWebContents(int tab_id,
+                                             WebContents* web_contents) {
+    return new TabDescriptor(tab_id, web_contents);
+  }
 
-base::TimeTicks GetLastActiveTimeForAgentHost(
-    scoped_refptr<DevToolsAgentHost> agent_host) {
-  if (WebContents* web_contents = agent_host->GetWebContents())
-    return web_contents->GetLastActiveTime();
-  return base::TimeTicks();
-}
+  static TabDescriptor* CreateForUnloadedTab(int tab_id,
+                                             const base::string16& title,
+                                             const GURL& url) {
+    return new TabDescriptor(tab_id, title, url);
+  }
 
-class TargetBase : public content::DevToolsTarget {
- public:
-  // content::DevToolsTarget implementation:
-  std::string GetParentId() const override { return std::string(); }
+  ~TabDescriptor() override {
+  }
 
-  std::string GetTitle() const override { return title_; }
+  // devtools_discovery::DevToolsTargetDescriptor implementation.
+  std::string GetParentId() const override {
+    return std::string();
+  }
 
-  std::string GetDescription() const override { return std::string(); }
+  std::string GetTitle() const override {
+    return title_;
+  }
 
-  GURL GetURL() const override { return url_; }
+  std::string GetDescription() const override {
+    return std::string();
+  }
 
-  GURL GetFaviconURL() const override { return favicon_url_; }
+  GURL GetURL() const override {
+    return url_;
+  }
+
+  GURL GetFaviconURL() const override {
+    return favicon_url_;
+  }
 
   base::TimeTicks GetLastActivityTime() const override {
     return last_activity_time_;
   }
 
- protected:
-  explicit TargetBase(WebContents* web_contents)
-      : title_(base::UTF16ToUTF8(web_contents->GetTitle())),
-        url_(web_contents->GetURL()),
-        favicon_url_(GetFaviconURLForContents(web_contents)),
-        last_activity_time_(web_contents->GetLastActiveTime()) {
+  std::string GetId() const override {
+    return base::IntToString(tab_id_);
   }
 
-  explicit TargetBase(scoped_refptr<DevToolsAgentHost> agent_host)
-      : title_(agent_host->GetTitle()),
-        url_(agent_host->GetURL()),
-        favicon_url_(GetFaviconURLForAgentHost(agent_host)),
-        last_activity_time_(GetLastActiveTimeForAgentHost(agent_host)) {
+  std::string GetType() const override {
+    return devtools_discovery::BasicTargetDescriptor::kTypePage;
   }
 
-  TargetBase(const std::string& title, const GURL& url)
-      : title_(title),
-        url_(url) {
-  }
-
- private:
-  const std::string title_;
-  const GURL url_;
-  const GURL favicon_url_;
-  const base::TimeTicks last_activity_time_;
-};
-
-class TabTarget : public TargetBase {
- public:
-  static TabTarget* CreateForWebContents(int tab_id,
-                                         WebContents* web_contents) {
-    return new TabTarget(tab_id, web_contents);
-  }
-
-  static TabTarget* CreateForUnloadedTab(int tab_id,
-                                         const base::string16& title,
-                                         const GURL& url) {
-    return new TabTarget(tab_id, title, url);
-  }
-
-  // content::DevToolsTarget implementation:
-  std::string GetId() const override { return base::IntToString(tab_id_); }
-
-  std::string GetType() const override { return kTargetTypePage; }
-
   bool IsAttached() const override {
     TabModel* model;
     int index;
     if (!FindTab(&model, &index))
       return false;
     WebContents* web_contents = model->GetWebContentsAt(index);
     if (!web_contents)
       return false;
     return DevToolsAgentHost::IsDebuggerAttached(web_contents);
   }
@@ skipping 32 matching lines @@
   bool Close() const override {
     TabModel* model;
     int index;
     if (!FindTab(&model, &index))
       return false;
     model->CloseTabAt(index);
     return true;
   }
 
  private:
-  TabTarget(int tab_id, WebContents* web_contents)
-      : TargetBase(web_contents),
-        tab_id_(tab_id) {
+  TabDescriptor(int tab_id, WebContents* web_contents)
+      : tab_id_(tab_id),
+        title_(base::UTF16ToUTF8(web_contents->GetTitle())),
+        url_(web_contents->GetURL()),
+        favicon_url_(GetFaviconURLForContents(web_contents)),
+        last_activity_time_(web_contents->GetLastActiveTime()) {
   }
 
-  TabTarget(int tab_id, const base::string16& title, const GURL& url)
-      : TargetBase(base::UTF16ToUTF8(title), url),
-        tab_id_(tab_id) {
+  TabDescriptor(int tab_id, const base::string16& title, const GURL& url)
+      : tab_id_(tab_id),
+        title_(base::UTF16ToUTF8(title)),
+        url_(url) {
   }
 
   bool FindTab(TabModel** model_result, int* index_result) const {
     for (TabModelList::const_iterator iter = TabModelList::begin();
         iter != TabModelList::end(); ++iter) {
       TabModel* model = *iter;
       for (int i = 0; i < model->GetTabCount(); ++i) {
         TabAndroid* tab = model->GetTabAt(i);
         if (tab && tab->GetAndroidId() == tab_id_) {
           *model_result = model;
           *index_result = i;
           return true;
         }
       }
     }
     return false;
   }
 
   const int tab_id_;
+  const std::string title_;
+  const GURL url_;
+  const GURL favicon_url_;
+  const base::TimeTicks last_activity_time_;
+
+  DISALLOW_COPY_AND_ASSIGN(TabDescriptor);
 };
 
-class NonTabTarget : public TargetBase {
- public:
-  explicit NonTabTarget(scoped_refptr<DevToolsAgentHost> agent_host)
-      : TargetBase(agent_host),
-        agent_host_(agent_host) {
-  }
+scoped_ptr<devtools_discovery::DevToolsTargetDescriptor>
+CreateNewAndroidTab(const GURL& url) {
+  if (TabModelList::empty())
+    return scoped_ptr<devtools_discovery::DevToolsTargetDescriptor>();
 
-  // content::DevToolsTarget implementation:
-  std::string GetId() const override { return agent_host_->GetId(); }
+  TabModel* tab_model = TabModelList::get(0);
+  if (!tab_model)
+    return scoped_ptr<devtools_discovery::DevToolsTargetDescriptor>();
 
-  std::string GetType() const override {
-    switch (agent_host_->GetType()) {
-      case DevToolsAgentHost::TYPE_WEB_CONTENTS:
-        if (TabModelList::begin() == TabModelList::end()) {
-          // If there are no tab models we must be running in ChromeShell.
-          // Return the 'page' target type for backwards compatibility.
-          return kTargetTypePage;
-        }
-        break;
-      case DevToolsAgentHost::TYPE_SERVICE_WORKER:
-        return kTargetTypeServiceWorker;
-      default:
-        break;
-    }
-    return kTargetTypeOther;
-  }
+  WebContents* web_contents = tab_model->CreateNewTabForDevTools(url);
+  if (!web_contents)
+    return scoped_ptr<devtools_discovery::DevToolsTargetDescriptor>();
 
-  bool IsAttached() const override { return agent_host_->IsAttached(); }
+  TabAndroid* tab = TabAndroid::FromWebContents(web_contents);
+  if (!tab)
+    return scoped_ptr<devtools_discovery::DevToolsTargetDescriptor>();
 
-  scoped_refptr<DevToolsAgentHost> GetAgentHost() const override {
-    return agent_host_;
-  }
-
-  bool Activate() const override { return agent_host_->Activate(); }
-
-  bool Close() const override { return agent_host_->Close(); }
-
- private:
-  scoped_refptr<DevToolsAgentHost> agent_host_;
-};
+  return make_scoped_ptr(TabDescriptor::CreateForWebContents(
+      tab->GetAndroidId(), web_contents));
+}
 
 }  // namespace
 
-DevToolsManagerDelegateAndroid::DevToolsManagerDelegateAndroid()
-    : network_protocol_handler_(new DevToolsNetworkProtocolHandler()) {
+DevToolsDiscoveryProviderAndroid::DevToolsDiscoveryProviderAndroid() {
 }
 
-DevToolsManagerDelegateAndroid::~DevToolsManagerDelegateAndroid() {
+DevToolsDiscoveryProviderAndroid::~DevToolsDiscoveryProviderAndroid() {
 }
 
-void DevToolsManagerDelegateAndroid::Inspect(
-    content::BrowserContext* browser_context,
-    content::DevToolsAgentHost* agent_host) {
-}
-
-base::DictionaryValue* DevToolsManagerDelegateAndroid::HandleCommand(
-    content::DevToolsAgentHost* agent_host,
-    base::DictionaryValue* command_dict) {
-  return network_protocol_handler_->HandleCommand(agent_host, command_dict);
-}
-
-void DevToolsManagerDelegateAndroid::DevToolsAgentStateChanged(
-    content::DevToolsAgentHost* agent_host,
-    bool attached) {
-  network_protocol_handler_->DevToolsAgentStateChanged(agent_host, attached);
-}
-
-scoped_ptr<content::DevToolsTarget>
-    DevToolsManagerDelegateAndroid::CreateNewTarget(const GURL& url) {
-  if (TabModelList::empty())
-    return scoped_ptr<content::DevToolsTarget>();
-
-  TabModel* tab_model = TabModelList::get(0);
-  if (!tab_model)
-    return scoped_ptr<content::DevToolsTarget>();
-
-  WebContents* web_contents = tab_model->CreateNewTabForDevTools(url);
-  if (!web_contents)
-    return scoped_ptr<content::DevToolsTarget>();
-
-  TabAndroid* tab = TabAndroid::FromWebContents(web_contents);
-  if (!tab)
-    return scoped_ptr<content::DevToolsTarget>();
-
-  return scoped_ptr<content::DevToolsTarget>(
-      TabTarget::CreateForWebContents(tab->GetAndroidId(), web_contents));
-}
-
-void DevToolsManagerDelegateAndroid::EnumerateTargets(TargetCallback callback) {
-  TargetList targets;
+devtools_discovery::DevToolsTargetDescriptor::List
+DevToolsDiscoveryProviderAndroid::GetDescriptors() {
+  devtools_discovery::DevToolsTargetDescriptor::List result;
 
   // Enumerate existing tabs, including the ones with no WebContents.
   std::set<WebContents*> tab_web_contents;
   for (TabModelList::const_iterator iter = TabModelList::begin();
       iter != TabModelList::end(); ++iter) {
     TabModel* model = *iter;
     for (int i = 0; i < model->GetTabCount(); ++i) {
       TabAndroid* tab = model->GetTabAt(i);
       if (!tab)
         continue;
 
-      WebContents* web_contents = model->GetWebContentsAt(i);
+      WebContents* web_contents = tab->web_contents();
       if (web_contents) {
         tab_web_contents.insert(web_contents);
-        targets.push_back(TabTarget::CreateForWebContents(tab->GetAndroidId(),
-                                                          web_contents));
+        result.push_back(TabDescriptor::CreateForWebContents(
+            tab->GetAndroidId(), web_contents));
       } else {
-        targets.push_back(TabTarget::CreateForUnloadedTab(tab->GetAndroidId(),
-                                                          tab->GetTitle(),
-                                                          tab->GetURL()));
+        result.push_back(TabDescriptor::CreateForUnloadedTab(
+            tab->GetAndroidId(), tab->GetTitle(), tab->GetURL()));
       }
     }
   }
 
-  // Add targets for WebContents not associated with any tabs.
+  // Add descriptors for targets not associated with any tabs.
   DevToolsAgentHost::List agents = DevToolsAgentHost::GetOrCreateAll();
   for (DevToolsAgentHost::List::iterator it = agents.begin();
        it != agents.end(); ++it) {
     if (WebContents* web_contents = (*it)->GetWebContents()) {
       if (tab_web_contents.find(web_contents) != tab_web_contents.end())
         continue;
     }
-    targets.push_back(new NonTabTarget(*it));
+    result.push_back(new devtools_discovery::BasicTargetDescriptor(*it));
   }
 
-  callback.Run(targets);
+  return result;
 }
 
-std::string DevToolsManagerDelegateAndroid::GetPageThumbnailData(
-    const GURL& url) {
-  Profile* profile = ProfileManager::GetLastUsedProfile()->GetOriginalProfile();
-  scoped_refptr<history::TopSites> top_sites =
-      TopSitesFactory::GetForProfile(profile);
-  if (top_sites) {
-    scoped_refptr<base::RefCountedMemory> data;
-    if (top_sites->GetPageThumbnail(url, false, &data))
-      return std::string(data->front_as<char>(), data->size());
-  }
-  return std::string();
+// static
+void DevToolsDiscoveryProviderAndroid::Install() {
+  devtools_discovery::DevToolsDiscoveryManager* discovery_manager =
+      devtools_discovery::DevToolsDiscoveryManager::GetInstance();
+  discovery_manager->AddProvider(
+      make_scoped_ptr(new DevToolsDiscoveryProviderAndroid()));
+  discovery_manager->SetCreateCallback(base::Bind(&CreateNewAndroidTab));
 }