arc: Abort booting ARC if the device is critically low on disk space.

chrome/browser/chromeos/arc/arc_boot_error_notification.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/chromeos/arc/arc_boot_error_notification.h"
+
+#include "base/macros.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/chrome_pages.h"
+#include "chrome/grit/generated_resources.h"
+#include "components/user_manager/user_manager.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/chromeos/resources/grit/ui_chromeos_resources.h"
+#include "ui/message_center/message_center.h"
+#include "ui/message_center/notification.h"
+#include "ui/message_center/notification_types.h"
+#include "ui/message_center/notifier_settings.h"
+
+namespace arc {
+
+namespace {
+
+const char kLowDiskSpaceId[] = "arc_low_disk";
+const char kNotifierId[] = "arc_boot_error";
+const char kDisplaySource[] = "arc_boot_error_source";
+const char kStoragePage[] = "storage";
+
+class LowDiskSpaceErrorNotificationDelegate
+    : public message_center::NotificationDelegate {
+ public:
+  LowDiskSpaceErrorNotificationDelegate() {}

[hidehiko, 2016/07/14 07:39:40]

= default?

[Shuhei Takahashi, 2016/07/14 08:44:27]

Done.

+
+  // message_center::NotificationDelegate
+  void ButtonClick(int button_index) override {
+    chrome::ShowSettingsSubPageForProfile(
+        ProfileManager::GetActiveUserProfile(), kStoragePage);
+  }
+
+ private:
+  ~LowDiskSpaceErrorNotificationDelegate() override {}

[hidehiko, 2016/07/14 07:39:40]

= default?

[Shuhei Takahashi, 2016/07/14 08:44:27]

Done.

+
+  DISALLOW_COPY_AND_ASSIGN(LowDiskSpaceErrorNotificationDelegate);
+};
+
+void ShowLowDiskSpaceErrorNotification() {
+  message_center::ButtonInfo storage_settings(
+      l10n_util::GetStringUTF16(IDS_LOW_DISK_NOTIFICATION_BUTTON));
+  storage_settings.icon = ui::ResourceBundle::GetSharedInstance().GetImageNamed(
+      IDR_STORAGE_MANAGER_BUTTON);
+  message_center::RichNotificationData optional_fields;
+  optional_fields.buttons.push_back(storage_settings);
+
+  message_center::NotifierId notifier_id(
+      message_center::NotifierId::SYSTEM_COMPONENT, kNotifierId);
+  const AccountId& account_id =
+      user_manager::UserManager::Get()->GetPrimaryUser()->GetAccountId();
+  notifier_id.profile_id = account_id.GetUserEmail();
+
+  message_center::MessageCenter::Get()->AddNotification(
+      base::MakeUnique<message_center::Notification>(
+          message_center::NOTIFICATION_TYPE_SIMPLE, kLowDiskSpaceId,
+          l10n_util::GetStringUTF16(
+              IDS_ARC_CRITICALLY_LOW_DISK_NOTIFICATION_TITLE),
+          l10n_util::GetStringUTF16(
+              IDS_ARC_CRITICALLY_LOW_DISK_NOTIFICATION_MESSAGE),
+          gfx::Image(ui::ResourceBundle::GetSharedInstance().GetImageNamed(
+              IDR_DISK_SPACE_NOTIFICATION_CRITICAL)),
+          base::UTF8ToUTF16(kDisplaySource), GURL(), notifier_id,
+          optional_fields, new LowDiskSpaceErrorNotificationDelegate()));
+}
+
+}  // namespace
+
+ArcBootErrorNotification::ArcBootErrorNotification(
+    ArcBridgeService* bridge_service)
+    : ArcService(bridge_service) {
+  arc_bridge_service()->AddObserver(this);
+}
+
+ArcBootErrorNotification::~ArcBootErrorNotification() {
+  arc_bridge_service()->RemoveObserver(this);
+}
+
+void ArcBootErrorNotification::OnBridgeStopped(
+    ArcBridgeService::StopReason reason) {
+  if (reason == ArcBridgeService::StopReason::LOW_DISK_SPACE) {
+    ShowLowDiskSpaceErrorNotification();
+  }
+}
+
+}  // namespace arc