Refactor MessageCenterSettingsController.

chrome/browser/notifications/application_notifier_source.cc

+// Copyright (c) 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/notifications/application_notifier_source.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/notifications/notifier_state_tracker.h"
+#include "chrome/browser/notifications/notifier_state_tracker_factory.h"
+#include "chrome/browser/profiles/profile.h"
+#include "extensions/common/constants.h"
+#include "extensions/common/extension_set.h"
+#include "extensions/common/permissions/api_permission.h"
+#include "extensions/common/permissions/permissions_data.h"
+#include "ui/message_center/notifier_settings.h"
+
+ApplicationNotifierSource::ApplicationNotifierSource(Observer* observer)
+    : observer_(observer) {}
+
+ApplicationNotifierSource::~ApplicationNotifierSource() {}
+
+std::vector<std::unique_ptr<message_center::Notifier>>
+ApplicationNotifierSource::GetNotifierList(Profile* profile) {
+  std::vector<std::unique_ptr<message_center::Notifier>> notifiers;
+  const extensions::ExtensionSet& extension_set =
+      extensions::ExtensionRegistry::Get(profile)->enabled_extensions();
+  // The extension icon size has to be 32x32 at least to load bigger icons if
+  // the icon doesn't exist for the specified size, and in that case it falls
+  // back to the default icon. The fetched icon will be resized in the
+  // settings dialog. See chrome/browser/extensions/extension_icon_image.cc
+  // and crbug.com/222931
+  app_icon_loader_.reset(new extensions::ExtensionAppIconLoader(
+      profile, extension_misc::EXTENSION_ICON_SMALL, this));
+  for (extensions::ExtensionSet::const_iterator iter = extension_set.begin();
+       iter != extension_set.end(); ++iter) {
+    const extensions::Extension* extension = iter->get();
+    if (!extension->permissions_data()->HasAPIPermission(
+            extensions::APIPermission::kNotifications)) {
+      continue;
+    }
+
+    // Hosted apps are no longer able to affect the notifications permission
+    // state for web notifications.
+    // TODO(dewittj): Deprecate the 'notifications' permission for hosted
+    // apps.
+    if (extension->is_hosted_app())
+      continue;
+
+    message_center::NotifierId notifier_id(
+        message_center::NotifierId::APPLICATION, extension->id());
+    NotifierStateTracker* const notifier_state_tracker =
+        NotifierStateTrackerFactory::GetForProfile(profile);
+    notifiers.emplace_back(new message_center::Notifier(
+        notifier_id, base::UTF8ToUTF16(extension->name()),
+        notifier_state_tracker->IsNotifierEnabled(notifier_id)));
+    app_icon_loader_->FetchImage(extension->id());
+  }
+
+  return notifiers;
+}
+
+void ApplicationNotifierSource::SetNotifierEnabled(
+    Profile* profile,
+    const message_center::Notifier& notifier,
+    bool enabled) {
+  NotifierStateTrackerFactory::GetForProfile(profile)->SetNotifierEnabled(
+      notifier.notifier_id, enabled);
+  observer_->OnNotifierEnabledChanged(notifier.notifier_id, enabled);
+}
+
+message_center::NotifierId::NotifierType
+ApplicationNotifierSource::GetNotifierType() {
+  return message_center::NotifierId::APPLICATION;
+}
+
+void ApplicationNotifierSource::OnAppImageUpdated(const std::string& id,
+                                                  const gfx::ImageSkia& image) {
+  observer_->OnIconImageUpdated(
+      message_center::NotifierId(message_center::NotifierId::APPLICATION, id),
+      gfx::Image(image));
+}