arc: Handle ARC events in MD Settings

chrome/browser/ui/webui/settings/chromeos/android_apps_handler.cc

 // Copyright 2016 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/settings/chromeos/android_apps_handler.h"
 
 #include "base/values.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_utils.h"  // kSettingsAppId
 #include "ui/events/event_constants.h"
 
 namespace chromeos {
 namespace settings {
 
 AndroidAppsHandler::AndroidAppsHandler(Profile* profile)
-    : arc_prefs_observer_(this), profile_(profile), weak_ptr_factory_(this) {}
+    : arc_prefs_observer_(this),
+      arc_session_manager_observer_(this),
+      profile_(profile),
+      weak_ptr_factory_(this) {}
 
 AndroidAppsHandler::~AndroidAppsHandler() {}
 
 void AndroidAppsHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback(
       "requestAndroidAppsInfo",
       base::Bind(&AndroidAppsHandler::HandleRequestAndroidAppsInfo,
                  weak_ptr_factory_.GetWeakPtr()));
   web_ui()->RegisterMessageCallback(
       "showAndroidAppsSettings",
       base::Bind(&AndroidAppsHandler::ShowAndroidAppsSettings,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
 void AndroidAppsHandler::OnJavascriptAllowed() {
   ArcAppListPrefs* arc_prefs = ArcAppListPrefs::Get(profile_);
-  if (arc_prefs)
+  if (arc_prefs) {
     arc_prefs_observer_.Add(arc_prefs);
+    // arc::ArcSessionManager is assosiated with primary profile.
+    arc_session_manager_observer_.Add(arc::ArcSessionManager::Get());
+  }
 }
 
 void AndroidAppsHandler::OnJavascriptDisallowed() {
   arc_prefs_observer_.RemoveAll();
+  arc_session_manager_observer_.RemoveAll();
 }
 
 void AndroidAppsHandler::OnAppRegistered(
     const std::string& app_id,
     const ArcAppListPrefs::AppInfo& app_info) {
   OnAppChanged(app_id);
 }
 
 void AndroidAppsHandler::OnAppRemoved(const std::string& app_id) {
   OnAppChanged(app_id);
 }
 
-void AndroidAppsHandler::OnAppReadyChanged(const std::string& app_id,
-                                           bool ready) {
-  OnAppChanged(app_id);
-}
-
 void AndroidAppsHandler::OnAppChanged(const std::string& app_id) {
   if (app_id != arc::kSettingsAppId)
     return;
   SendAndroidAppsInfo();
 }
 
+void AndroidAppsHandler::OnArcPlayStoreEnabledChanged(bool enabled) {
+  SendAndroidAppsInfo();
+}
+
 std::unique_ptr<base::DictionaryValue>
 AndroidAppsHandler::BuildAndroidAppsInfo() {
   std::unique_ptr<base::DictionaryValue> info(new base::DictionaryValue);
-  bool app_ready = false;
-  if (arc::IsArcPlayStoreEnabledForProfile(profile_)) {
-    std::unique_ptr<ArcAppListPrefs::AppInfo> app_info =
-        ArcAppListPrefs::Get(profile_)->GetApp(arc::kSettingsAppId);
-    app_ready = app_info && app_info->ready;
-  }
-  info->SetBoolean("appReady", app_ready);
+  info->SetBoolean("playStoreEnabled",
+                   arc::IsArcPlayStoreEnabledForProfile(profile_));
+  info->SetBoolean(
+      "settingsAppAvailable",
+      ArcAppListPrefs::Get(profile_)->IsRegistered(arc::kSettingsAppId));
   return info;
 }
 
 void AndroidAppsHandler::HandleRequestAndroidAppsInfo(
     const base::ListValue* args) {
   SendAndroidAppsInfo();
 }
 
 void AndroidAppsHandler::SendAndroidAppsInfo() {
   AllowJavascript();
   std::unique_ptr<base::DictionaryValue> info = BuildAndroidAppsInfo();
   CallJavascriptFunction("cr.webUIListenerCallback",
                          base::Value("android-apps-info-update"), *info);
 }
 
 void AndroidAppsHandler::ShowAndroidAppsSettings(const base::ListValue* args) {
   CHECK_EQ(1U, args->GetSize());
   bool activated_from_keyboard = false;
   args->GetBoolean(0, &activated_from_keyboard);
   int flags = activated_from_keyboard ? ui::EF_NONE : ui::EF_LEFT_MOUSE_BUTTON;
 
   // Settings in secondary profile cannot access ARC.
   CHECK(arc::IsArcAllowedForProfile(profile_));
   arc::LaunchAndroidSettingsApp(profile_, flags);
 }
 
 }  // namespace settings
 }  // namespace chromeos