Adds desktop notification support for renderer process, and enables the build flag for chromium build of webkit. Doesn't expose the feature to any websites yet.

BUG=none
TEST=none (This is part 1 of 3 for this feature; tests will follow).

Review URL: http://codereview.chromium.org/194079


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@27973 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 119 insertions, 0 deletions

diff --git a/chrome/common/desktop_notifications/active_notification_tracker.cc b/chrome/common/desktop_notifications/active_notification_tracker.cc
new file mode 100644
index 0000000..230d76a
--- /dev/null
+++ b/chrome/common/desktop_notifications/active_notification_tracker.cc
@@ -0,0 +1,69 @@
+// Copyright (c) 2009 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/common/desktop_notifications/active_notification_tracker.h"
+
+#include "base/message_loop.h"
+#include "webkit/api/public/WebNotification.h"
+#include "webkit/api/public/WebNotificationPermissionCallback.h"
+
+using WebKit::WebNotification;
+using WebKit::WebNotificationPermissionCallback;
+
+bool ActiveNotificationTracker::GetId(
+    const WebNotification& notification, int& id) {
+  DCHECK(MessageLoop::current()->type() == MessageLoop::TYPE_UI);
+  ReverseTable::iterator iter = reverse_notification_table_.find(notification);
+  if (iter == reverse_notification_table_.end())
+    return false;
+  id = iter->second;
+  return true;
+}
+
+bool ActiveNotificationTracker::GetNotification(
+    int id, WebNotification* notification) {
+  DCHECK(MessageLoop::current()->type() == MessageLoop::TYPE_UI);
+  WebNotification* lookup = notification_table_.Lookup(id);
+  if (!lookup)
+    return false;
+
+  *notification = *lookup;
+  return true;
+}
+
+int ActiveNotificationTracker::RegisterNotification(
+    const WebKit::WebNotification& proxy) {
+  DCHECK(MessageLoop::current()->type() == MessageLoop::TYPE_UI);
+  WebNotification* notification = new WebNotification(proxy);
+  int id = notification_table_.Add(notification);
+  reverse_notification_table_[proxy] = id;
+  return id;
+}
+
+void ActiveNotificationTracker::UnregisterNotification(int id) {
+  DCHECK(MessageLoop::current()->type() == MessageLoop::TYPE_UI);
+  // We want to free the notification after removing it from the table.
+  scoped_ptr<WebNotification> notification(notification_table_.Lookup(id));
+  notification_table_.Remove(id);
+  DCHECK(notification.get());
+  if (notification.get())
+    reverse_notification_table_.erase(*notification);
+}
+
+WebNotificationPermissionCallback* ActiveNotificationTracker::GetCallback(
+    int id) {
+  DCHECK(MessageLoop::current()->type() == MessageLoop::TYPE_UI);
+  return callback_table_.Lookup(id);
+}
+
+int ActiveNotificationTracker::RegisterPermissionRequest(
+    WebNotificationPermissionCallback* callback) {
+  DCHECK(MessageLoop::current()->type() == MessageLoop::TYPE_UI);
+  return callback_table_.Add(callback);
+}
+
+void ActiveNotificationTracker::OnPermissionRequestComplete(int id) {
+  DCHECK(MessageLoop::current()->type() == MessageLoop::TYPE_UI);
+  callback_table_.Remove(id);
+}
diff --git a/chrome/common/desktop_notifications/active_notification_tracker.h b/chrome/common/desktop_notifications/active_notification_tracker.h
new file mode 100644
index 0000000..4bdd5d9
--- /dev/null
+++ b/chrome/common/desktop_notifications/active_notification_tracker.h
@@ -0,0 +1,50 @@
+// Copyright (c) 2009 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_COMMON_DESKTOP_NOTIFICATIONS_ACTIVE_NOTIFICATION_TRACKER_H_
+#define CHROME_COMMON_DESKTOP_NOTIFICATIONS_ACTIVE_NOTIFICATION_TRACKER_H_
+
+#include <map>
+
+#include "base/basictypes.h"
+#include "base/id_map.h"
+#include "base/hash_tables.h"
+#include "webkit/api/public/WebNotification.h"
+
+namespace WebKit {
+class WebNotificationPermissionCallback;
+}
+
+// This class manages the set of active Notification objects in either
+// a render or worker process.  This class should be accessed only on
+// the main thread.
+class ActiveNotificationTracker {
+ public:
+  ActiveNotificationTracker() {}
+
+  // Methods for tracking active notification objects.
+  int RegisterNotification(const WebKit::WebNotification& notification);
+  void UnregisterNotification(int id);
+  bool GetId(const WebKit::WebNotification& notification, int& id);
+  bool GetNotification(int id, WebKit::WebNotification* notification);
+
+  // Methods for tracking active permission requests.
+  int RegisterPermissionRequest(
+      WebKit::WebNotificationPermissionCallback* callback);
+  void OnPermissionRequestComplete(int id);
+  WebKit::WebNotificationPermissionCallback* GetCallback(int id);
+
+ private:
+  typedef std::map<WebKit::WebNotification, int> ReverseTable;
+
+  // Tracking maps for active notifications and permission requests.
+  IDMap<WebKit::WebNotification> notification_table_;
+  ReverseTable reverse_notification_table_;
+  IDMap<WebKit::WebNotificationPermissionCallback> callback_table_;
+
+  DISALLOW_COPY_AND_ASSIGN(ActiveNotificationTracker);
+};
+
+#endif  // CHROME_COMMON_DESKTOP_NOTIFICATIONS_ACTIVE_NOTIFICATION_TRACKER_H_
+