app_list: Add sync animation.

- Add a status property to AppListModel to indicate app syncing status;
- Update this status when AppSyncUIState changes;
- AppsGridView to hold AppListModel instead of just apps;
- AppsGridView to show pulsing blocks on remaining slots on the last page
  when AppListModel status is syncing;

BUG=129236
TEST=Verify app list showing pulsing white blocks for new user on cros.

R=sky@chromium.org


Review URL: https://chromiumcodereview.appspot.com/11371003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@166452 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 66 insertions, 0 deletions

diff --git a/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.cc b/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.cc
new file mode 100644
index 0000000..c791c00
--- /dev/null
+++ b/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.cc
@@ -0,0 +1,30 @@
+// 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/ash/app_list/app_sync_ui_state_watcher.h"
+
+#include "chrome/browser/ui/ash/app_sync_ui_state.h"
+#include "ui/app_list/app_list_model.h"
+
+AppSyncUIStateWatcher::AppSyncUIStateWatcher(Profile* profile,
+                                             app_list::AppListModel* model)
+    : app_sync_ui_state_(AppSyncUIState::Get(profile)),
+      model_(model) {
+  if (app_sync_ui_state_) {
+    app_sync_ui_state_->AddObserver(this);
+    OnAppSyncUIStatusChanged();
+  }
+}
+
+AppSyncUIStateWatcher::~AppSyncUIStateWatcher() {
+  if (app_sync_ui_state_)
+    app_sync_ui_state_->RemoveObserver(this);
+}
+
+void AppSyncUIStateWatcher::OnAppSyncUIStatusChanged() {
+  if (app_sync_ui_state_->status() == AppSyncUIState::STATUS_SYNCING)
+    model_->SetStatus(app_list::AppListModel::STATUS_SYNCING);
+  else
+    model_->SetStatus(app_list::AppListModel::STATUS_NORMAL);
+}
diff --git a/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h b/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
new file mode 100644
index 0000000..5ec74a1
--- /dev/null
+++ b/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
@@ -0,0 +1,36 @@
+// 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.
+
+#ifndef CHROME_BROWSER_UI_ASH_APP_LIST_APP_SYNC_UI_STATE_WATCHER_H_
+#define CHROME_BROWSER_UI_ASH_APP_LIST_APP_SYNC_UI_STATE_WATCHER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/ui/ash/app_sync_ui_state_observer.h"
+
+namespace app_list {
+class AppListModel;
+}
+
+class AppSyncUIState;
+class Profile;
+
+// AppSyncUIStateWatcher updates AppListModel status when AppSyncUIState
+// of the given profile changes.
+class AppSyncUIStateWatcher : public AppSyncUIStateObserver {
+ public:
+  AppSyncUIStateWatcher(Profile* profile, app_list::AppListModel* model);
+  virtual ~AppSyncUIStateWatcher();
+
+ private:
+  // AppSyncUIStateObserver overrides:
+  virtual void OnAppSyncUIStatusChanged() OVERRIDE;
+
+  AppSyncUIState* app_sync_ui_state_;
+  app_list::AppListModel* model_;  // Owned by AppListView
+
+  DISALLOW_COPY_AND_ASSIGN(AppSyncUIStateWatcher);
+};
+
+#endif  // CHROME_BROWSER_UI_ASH_APP_LIST_APP_SYNC_UI_STATE_WATCHER_H_