Added system notification for update_engine.

chrome/browser/chromeos/update_observer.cc

Index: chrome/browser/chromeos/update_observer.cc
diff --git a/chrome/browser/chromeos/update_observer.cc b/chrome/browser/chromeos/update_observer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ac1af569746d0b1debbd282cfd2f5cb00dd74f5e
--- /dev/null
+++ b/chrome/browser/chromeos/update_observer.cc
@@ -0,0 +1,66 @@
+// Copyright (c) 2010 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/update_observer.h"
+
+#include "app/l10n_util.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/common/time_format.h"
+#include "grit/generated_resources.h"
+#include "grit/theme_resources.h"
+
+namespace chromeos {
+
+UpdateObserver::UpdateObserver(Profile* profile)
+    : notification_(profile, "update.chromeos", IDR_NOTIFICATION_UPDATE,
+                    l10n_util::GetStringUTF16(IDS_UPDATE_TITLE)),
+      progress_(-1) {}
+
+UpdateObserver::~UpdateObserver() {
+  notification_.Hide();
+}
+
+void UpdateObserver::Changed(UpdateLibrary* object) {
+  switch (object->status().status) {
+    case UPDATE_STATUS_ERROR:
+      notification_.Show(l10n_util::GetStringUTF16(IDS_UPDATE_ERROR), true);
+      break;
+    case UPDATE_STATUS_IDLE:
+    case UPDATE_STATUS_CHECKING_FOR_UPDATE:
+      // Do nothing in these cases, we don't want to notify the user of the
+      // check unless there is an update. We don't hide here because
+      // we want the final state to be sticky.
+      break;
+    case UPDATE_STATUS_UPDATE_AVAILABLE:
+      notification_.Show(l10n_util::GetStringUTF16(IDS_UPDATE_AVAILABLE),
+                         false);
+      break;
+    case UPDATE_STATUS_DOWNLOADING:
+    {
+      int progress = static_cast<int>(object->status().download_progress *
+          100.0);
+      if (progress != progress_) {
+        progress_ = progress;
+        notification_.Show(l10n_util::GetStringFUTF16(IDS_UPDATE_DOWNLOADING,
+            IntToString16(progress_)), false);
+      }
+    }
+      break;
+    case UPDATE_STATUS_VERIFYING:
+      notification_.Show(l10n_util::GetStringUTF16(IDS_UPDATE_VERIFYING),
+                         false);
+      break;
+    case UPDATE_STATUS_FINALIZING:
+      notification_.Show(l10n_util::GetStringUTF16(IDS_UPDATE_FINALIZING),
+                         false);
+      break;
+    case UPDATE_STATUS_UPDATED_NEED_REBOOT:
+      notification_.Show(l10n_util::GetStringUTF16(IDS_UPDATE_COMPLETED), true);
+      break;
+  }
+}
+
+}  // namespace chromeos
+