AppListController refactoring part 3: Switching over to use AppListShower in Ash.

chrome/browser/ui/ash/app_list/app_list_service_ash.cc

Index: chrome/browser/ui/ash/app_list/app_list_service_ash.cc
diff --git a/chrome/browser/ui/ash/app_list/app_list_service_ash.cc b/chrome/browser/ui/ash/app_list/app_list_service_ash.cc
index fb76d99edba1ce83e081a4f641fd4c7831af9779..b420c882993b1a57bd44b94d2e8b1b2ffb87d0de 100644
--- a/chrome/browser/ui/ash/app_list/app_list_service_ash.cc
+++ b/chrome/browser/ui/ash/app_list/app_list_service_ash.cc
@@ -4,19 +4,49 @@
 
 #include "chrome/browser/ui/ash/app_list/app_list_service_ash.h"
 
+#include "ash/app_list/app_list_shower_delegate.h"
+#include "ash/app_list/app_list_shower_delegate_factory.h"
+#include "ash/app_list/app_list_view_delegate_factory.h"
 #include "ash/shell.h"
 #include "base/files/file_path.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
 #include "build/build_config.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/app_list/app_list_view_delegate.h"
 #include "chrome/browser/ui/app_list/start_page_service.h"
 #include "chrome/browser/ui/ash/app_list/app_list_controller_ash.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
+#include "chrome/browser/ui/ash/session_util.h"
 #include "ui/app_list/app_list_switches.h"
+#include "ui/app_list/shower/app_list_shower_delegate_factory.h"
+#include "ui/app_list/shower/app_list_shower_impl.h"
 #include "ui/app_list/views/app_list_main_view.h"
 #include "ui/app_list/views/app_list_view.h"
 #include "ui/app_list/views/contents_view.h"
 
+namespace {
+
+class ViewDelegateFactoryImpl : public ash::AppListViewDelegateFactory {
+ public:
+  explicit ViewDelegateFactoryImpl(AppListServiceImpl* factory)
+      : factory_(factory) {}
+  ~ViewDelegateFactoryImpl() override {}
+
+  // app_list::AppListViewDelegateFactory:
+  app_list::AppListViewDelegate* GetDelegate() override {
+    return factory_->GetViewDelegate(
+        Profile::FromBrowserContext(GetActiveBrowserContext()));
+  }
+
+ private:
+  AppListServiceImpl* factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ViewDelegateFactoryImpl);
+};
+
+}  // namespace
+
 // static
 AppListServiceAsh* AppListServiceAsh::GetInstance() {
   return base::Singleton<AppListServiceAsh,
@@ -24,24 +54,44 @@ AppListServiceAsh* AppListServiceAsh::GetInstance() {
 }
 
 AppListServiceAsh::AppListServiceAsh()
-    : controller_delegate_(new AppListControllerDelegateAsh()) {
+    : shower_delegate_factory_(new ash::AppListShowerDelegateFactory(
+          base::WrapUnique(new ViewDelegateFactoryImpl(this)))) {
+  app_list_shower_.reset(
+      new app_list::AppListShowerImpl(shower_delegate_factory_.get()));
+  controller_delegate_.reset(
+      new AppListControllerDelegateAsh(app_list_shower_.get()));
 }
 
 AppListServiceAsh::~AppListServiceAsh() {
 }
 
+app_list::AppListShower* AppListServiceAsh::GetAppListShower() {
+  return app_list_shower_.get();
+}
+
+void AppListServiceAsh::Init(Profile* initial_profile) {
+  // Ensure the StartPageService is created here. This early initialization is
+  // necessary to allow the WebContents to load before the app list is shown.
+  app_list::StartPageService* service =
+      app_list::StartPageService::Get(initial_profile);
+  if (service)
+    service->Init();
+}
+
+void AppListServiceAsh::OnProfileWillBeRemoved(
+    const base::FilePath& profile_path) {}
+
 void AppListServiceAsh::ShowAndSwitchToState(
     app_list::AppListModel::State state) {
   bool app_list_was_open = true;
-  app_list::AppListView* app_list_view =
-      ash::Shell::GetInstance()->GetAppListView();
+  app_list::AppListView* app_list_view = app_list_shower_->GetView();
   if (!app_list_view) {
     // TODO(calamity): This may cause the app list to show briefly before the
     // state change. If this becomes an issue, add the ability to ash::Shell to
     // load the app list without showing it.
-    ash::Shell::GetInstance()->ShowAppList(NULL);
+    app_list_shower_->Show(ash::Shell::GetTargetRootWindow());
     app_list_was_open = false;
-    app_list_view = ash::Shell::GetInstance()->GetAppListView();
+    app_list_view = app_list_shower_->GetView();
     DCHECK(app_list_view);
   }
 
@@ -53,19 +103,6 @@ void AppListServiceAsh::ShowAndSwitchToState(
   contents_view->SetActiveState(state, app_list_was_open /* animate */);
 }
 
-void AppListServiceAsh::Init(Profile* initial_profile) {
-  // Ensure the StartPageService is created here. This early initialization is
-  // necessary to allow the WebContents to load before the app list is shown.
-  app_list::StartPageService* service =
-      app_list::StartPageService::Get(initial_profile);
-  if (service)
-    service->Init();
-}
-
-void AppListServiceAsh::OnProfileWillBeRemoved(
-    const base::FilePath& profile_path) {
-}
-
 base::FilePath AppListServiceAsh::GetProfilePath(
     const base::FilePath& user_data_dir) {
   return ChromeLauncherController::instance()->profile()->GetPath();
@@ -75,7 +112,7 @@ void AppListServiceAsh::ShowForProfile(Profile* /*default_profile*/) {
   // This may not work correctly if the profile passed in is different from the
   // one the ash Shell is currently using.
   // TODO(ananta): Handle profile changes correctly when !defined(OS_CHROMEOS).
-  ash::Shell::GetInstance()->ShowAppList(NULL);
+  app_list_shower_->Show(ash::Shell::GetTargetRootWindow());
 }
 
 void AppListServiceAsh::ShowForAppInstall(Profile* profile,
@@ -93,8 +130,7 @@ void AppListServiceAsh::ShowForCustomLauncherPage(Profile* /*profile*/) {
 }
 
 void AppListServiceAsh::HideCustomLauncherPage() {
-  app_list::AppListView* app_list_view =
-      ash::Shell::GetInstance()->GetAppListView();
+  app_list::AppListView* app_list_view = app_list_shower_->GetView();
   if (!app_list_view)
     return;
 
@@ -107,20 +143,18 @@ void AppListServiceAsh::HideCustomLauncherPage() {
 }
 
 bool AppListServiceAsh::IsAppListVisible() const {
-  return ash::Shell::GetInstance()->GetAppListTargetVisibility();
+  return app_list_shower_->GetTargetVisibility();
 }
 
 void AppListServiceAsh::DismissAppList() {
-  ash::Shell::GetInstance()->DismissAppList();
+  app_list_shower_->Dismiss();
 }
 
 void AppListServiceAsh::EnableAppList(Profile* initial_profile,
                                       AppListEnableSource enable_source) {}
 
 gfx::NativeWindow AppListServiceAsh::GetAppListWindow() {
-  if (ash::Shell::HasInstance())
-    return ash::Shell::GetInstance()->GetAppListWindow();
-  return NULL;
+  return app_list_shower_->GetWindow();
 }
 
 Profile* AppListServiceAsh::GetCurrentAppListProfile() {