Notify launcher page with onTransitionChanged event

chrome/browser/ui/app_list/app_list_view_delegate.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/app_list/app_list_view_delegate.h"
 
 #include <vector>
 
 #include "apps/custom_launcher_page_contents.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/metrics/user_metrics.h"
 #include "base/stl_util.h"
 #include "chrome/browser/apps/scoped_keep_alive.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/search/hotword_service.h"
 #include "chrome/browser/search/hotword_service_factory.h"
 #include "chrome/browser/ui/app_list/app_list_controller_delegate.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 #include "chrome/browser/ui/app_list/app_list_syncable_service.h"
 #include "chrome/browser/ui/app_list/app_list_syncable_service_factory.h"
+#include "chrome/browser/ui/app_list/launcher_page_event_dispatcher.h"
 #include "chrome/browser/ui/app_list/search/search_controller_factory.h"
 #include "chrome/browser/ui/app_list/search/search_resource_manager.h"
 #include "chrome/browser/ui/app_list/start_page_service.h"
 #include "chrome/browser/ui/apps/chrome_app_delegate.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 168 matching lines @@
 
 void AppListViewDelegate::SetProfile(Profile* new_profile) {
   if (profile_ == new_profile)
     return;
 
   if (profile_) {
     // Note: |search_resource_manager_| has a reference to |speech_ui_| so must
     // be destroyed first.
     search_resource_manager_.reset();
     search_controller_.reset();
     custom_page_contents_.clear();

[tapted, 2014/11/06 06:05:45]

launcher_page_event_dispatcher_.reset(); before this.

[calamity, 2014/11/07 03:43:29]

Done.

     app_list::StartPageService* start_page_service =
         app_list::StartPageService::Get(profile_);
     if (start_page_service)
       start_page_service->RemoveObserver(this);
 #if defined(USE_ASH)
     app_sync_ui_state_watcher_.reset();
 #endif
     model_ = NULL;
   }
 
@@ skipping 54 matching lines @@
                 profile_->GetPath(),
                 &users_);
 
   FOR_EACH_OBSERVER(
       app_list::AppListViewDelegateObserver, observers_, OnProfilesChanged());
 }
 
 void AppListViewDelegate::SetUpCustomLauncherPages() {
   std::vector<GURL> custom_launcher_page_urls;
   GetCustomLauncherPageUrls(profile_, &custom_launcher_page_urls);
   for (std::vector<GURL>::const_iterator it = custom_launcher_page_urls.begin();

[tapted, 2014/11/06 06:05:45]

nit: I'd probably go for 

if (custom_launcher_page_urls.empty())
  return;

up here, rather than the !empty check below.

[calamity, 2014/11/07 03:43:29]

Done.

        it != custom_launcher_page_urls.end();
        ++it) {
     std::string extension_id = it->host();
     apps::CustomLauncherPageContents* page_contents =
         new apps::CustomLauncherPageContents(
             scoped_ptr<extensions::AppDelegate>(
                 new ChromeAppDelegate(scoped_ptr<ScopedKeepAlive>())),
             extension_id);
     page_contents->Initialize(profile_, *it);
     custom_page_contents_.push_back(page_contents);
   }
+
+  // Only the first custom launcher page gets events dispatched to it.
+  if (!custom_launcher_page_urls.empty()) {
+    launcher_page_event_dispatcher_.reset(
+        new app_list::LauncherPageEventDispatcher(
+            profile_, custom_launcher_page_urls[0].host()));
+  }
 }
 
 void AppListViewDelegate::OnHotwordStateChanged(bool started) {
   if (started) {
     if (speech_ui_->state() == app_list::SPEECH_RECOGNITION_READY) {
       OnSpeechRecognitionStateChanged(
           app_list::SPEECH_RECOGNITION_HOTWORD_LISTENING);
     }
   } else {
     if (speech_ui_->state() == app_list::SPEECH_RECOGNITION_HOTWORD_LISTENING)
@@ skipping 314 matching lines @@
     // after http://crbug.com/392763 resolved.
     views::WebView* web_view =
         new views::WebView(web_contents->GetBrowserContext());
     web_view->SetPreferredSize(size);
     web_view->SetWebContents(web_contents);
     web_views.push_back(web_view);
   }
 
   return web_views;
 }
+
+void AppListViewDelegate::CustomLauncherPageAnimationChanged(double progress) {
+  launcher_page_event_dispatcher_->ProgressChanged(progress);

[tapted, 2014/11/06 06:05:45]

if (launcher_page_event_dispatcher_) ?

[calamity, 2014/11/07 03:43:29]

Done.

+}
 #endif
 
 bool AppListViewDelegate::IsSpeechRecognitionEnabled() {
   app_list::StartPageService* service =
       app_list::StartPageService::Get(profile_);
   return service && service->GetSpeechRecognitionContents();
 }
 
 const app_list::AppListViewDelegate::Users&
 AppListViewDelegate::GetUsers() const {
@@ skipping 50 matching lines @@
 
       // SigninManagerFactory is not a leaky singleton (unlike this class), and
       // its destructor will check that it has no remaining observers.
       scoped_observer_.RemoveAll();
       SigninManagerFactory::GetInstance()->RemoveObserver(this);
       break;
     default:
       NOTREACHED();
   }
 }