Re-factor Ash Message Center code part 4/4

ash/system/web_notification/message_center.cc

Index: ash/system/web_notification/message_center.cc
diff --git a/ash/system/web_notification/message_center.cc b/ash/system/web_notification/message_center.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0032c97c8e9789cf8ecc1cfaa1228eff80050836
--- /dev/null
+++ b/ash/system/web_notification/message_center.cc
@@ -0,0 +1,134 @@
+// 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 "ash/system/web_notification/message_center.h"
+#include "base/logging.h"
+
+namespace message_center {
+
+//------------------------------------------------------------------------------
+
+MessageCenter::MessageCenter(Host* host)
+    : host_(host),
+      delegate_(NULL) {
+  notification_list_.reset(new WebNotificationList(this));
+}
+
+MessageCenter::~MessageCenter() {
+  notification_list_.reset();
+}
+
+void MessageCenter::SetDelegate(Delegate* delegate) {
+  DCHECK(!delegate_);
+  delegate_ = delegate;
+}
+
+void MessageCenter::SetMessageCenterVisible(bool visible) {
+  notification_list_->SetMessageCenterVisible(visible);
+}
+
+size_t MessageCenter::NotificationCount() const {
+  return notification_list_->notifications().size();
+}
+
+size_t MessageCenter::UnreadNotificationCount() const {
+  return notification_list_->unread_count();
+}
+
+bool MessageCenter::HasPopupNotifications() const {
+  return notification_list_->HasPopupNotifications();
+}
+
+//------------------------------------------------------------------------------
+// Client code interface.
+
+void MessageCenter::AddNotification(const std::string& id,
+                                    const string16& title,
+                                    const string16& message,
+                                    const string16& display_source,
+                                    const std::string& extension_id) {
+  notification_list_->AddNotification(
+      id, title, message, display_source, extension_id);
+  if (host_)
+    host_->MessageCenterChanged(true);
+}
+
+void MessageCenter::UpdateNotification(const std::string& old_id,
+                                       const std::string& new_id,
+                                       const string16& title,
+                                       const string16& message) {
+  notification_list_->UpdateNotificationMessage(
+      old_id, new_id, title, message);
+  if (host_)
+    host_->MessageCenterChanged(true);
+}
+
+void MessageCenter::RemoveNotification(const std::string& id) {
+  if (!notification_list_->RemoveNotification(id))
+    return;
+  if (host_)
+    host_->MessageCenterChanged(false);
+}
+
+void MessageCenter::SetNotificationImage(const std::string& id,
+                                         const gfx::ImageSkia& image) {
+  if (!notification_list_->SetNotificationImage(id, image))
+    return;
+  if (host_)
+    host_->MessageCenterChanged(true);
+}
+
+//------------------------------------------------------------------------------
+// Overridden from WebNotificationList::Delegate.
+
+void MessageCenter::SendRemoveNotification(const std::string& id) {
+  if (delegate_)
+    delegate_->NotificationRemoved(id);
+}
+
+void MessageCenter::SendRemoveAllNotifications() {
+  if (delegate_) {
+    const WebNotificationList::Notifications& notifications =
+        notification_list_->notifications();
+    for (WebNotificationList::Notifications::const_iterator loopiter =
+             notifications.begin();
+         loopiter != notifications.end(); ) {
+      WebNotificationList::Notifications::const_iterator curiter = loopiter++;
+      std::string notification_id = curiter->id;
+      // May call RemoveNotification and erase curiter.
+      delegate_->NotificationRemoved(notification_id);
+    }
+  }
+}
+
+void MessageCenter::DisableNotificationByExtension(
+    const std::string& id) {
+  if (delegate_)
+    delegate_->DisableExtension(id);
+  // When we disable notifications, we remove any existing matching
+  // notifications to avoid adding complicated UI to re-enable the source.
+  notification_list_->SendRemoveNotificationsByExtension(id);
+}
+
+void MessageCenter::DisableNotificationByUrl(const std::string& id) {
+  if (delegate_)
+    delegate_->DisableNotificationsFromSource(id);
+  notification_list_->SendRemoveNotificationsBySource(id);
+}
+
+void MessageCenter::ShowNotificationSettings(const std::string& id) {
+  if (delegate_)
+    delegate_->ShowSettings(id);
+}
+
+void MessageCenter::OnNotificationClicked(const std::string& id) {
+  if (delegate_)
+    delegate_->OnClicked(id);
+}
+
+WebNotificationList* MessageCenter::GetNotificationList() {
+  return notification_list_.get();
+}
+
+}  // namespace message_center