1 files changed, 51 insertions, 0 deletions
diff --git a/dom/presentation/interfaces/nsIPresentationDeviceManager.idl b/dom/presentation/interfaces/nsIPresentationDeviceManager.idl
new file mode 100644
index 000000000..adff9fc09
--- /dev/null
+++ b/dom/presentation/interfaces/nsIPresentationDeviceManager.idl
@@ -0,0 +1,51 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+interface nsIArray;
+interface nsIPresentationDeviceProvider;
+
+%{C++
+#define PRESENTATION_DEVICE_MANAGER_CONTRACTID "@mozilla.org/presentation-device/manager;1"
+#define PRESENTATION_DEVICE_CHANGE_TOPIC "presentation-device-change"
+%}
+
+/*
+ * Manager for the device availability. User can observe "presentation-device-change"
+ * for any update of the available devices.
+ */
+[scriptable, uuid(beb61db5-3d5f-454f-a15a-dbfa0337c569)]
+interface nsIPresentationDeviceManager : nsISupports
+{
+  // true if there is any device available.
+  readonly attribute boolean deviceAvailable;
+
+  /*
+   * Register a device provider manually.
+   * @param provider The device provider to add.
+   */
+  void addDeviceProvider(in nsIPresentationDeviceProvider provider);
+
+  /*
+   * Unregister a device provider manually.
+   * @param provider The device provider to remove.
+   */
+  void removeDeviceProvider(in nsIPresentationDeviceProvider provider);
+
+  /*
+   * Force all registered device providers to update device information.
+   */
+  void forceDiscovery();
+
+  /*
+   * Retrieve all available devices or all available devices that supports
+   * designated presentation URLs, return a list of nsIPresentationDevice.
+   * The returned list is a cached device list and could be out-of-date.
+   * Observe device change events to get following updates.
+   * @param presentationUrls the target presentation URLs for device filtering
+   */
+  nsIArray getAvailableDevices([optional] in nsIArray presentationUrls);
+};
+