1 files changed, 116 insertions, 0 deletions
diff --git a/b2g/components/PresentationRequestUIGlue.js b/b2g/components/PresentationRequestUIGlue.js
new file mode 100644
index 000000000..5c50401de
--- /dev/null
+++ b/b2g/components/PresentationRequestUIGlue.js
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+"use strict"
+
+function debug(aMsg) {
+  // dump("-*- PresentationRequestUIGlue: " + aMsg + "\n");
+}
+
+const { interfaces: Ci, utils: Cu, classes: Cc } = Components;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "SystemAppProxy",
+                                  "resource://gre/modules/SystemAppProxy.jsm");
+
+function PresentationRequestUIGlue() { }
+
+PresentationRequestUIGlue.prototype = {
+
+  sendRequest: function(aUrl, aSessionId, aDevice) {
+    let localDevice;
+    try {
+      localDevice = aDevice.QueryInterface(Ci.nsIPresentationLocalDevice);
+    } catch (e) {}
+
+    if (localDevice) {
+      return this.sendTo1UA(aUrl, aSessionId, localDevice.windowId);
+    } else {
+      return this.sendTo2UA(aUrl, aSessionId);
+    }
+  },
+
+  // For 1-UA scenario
+  sendTo1UA: function(aUrl, aSessionId, aWindowId) {
+    return new Promise((aResolve, aReject) => {
+      let handler = (evt) => {
+        if (evt.type === "unload") {
+          SystemAppProxy.removeEventListenerWithId(aWindowId,
+                                                   "unload",
+                                                   handler);
+          SystemAppProxy.removeEventListenerWithId(aWindowId,
+                                                   "mozPresentationContentEvent",
+                                                   handler);
+          aReject();
+        }
+        if (evt.type === "mozPresentationContentEvent" &&
+            evt.detail.id == aSessionId) {
+          SystemAppProxy.removeEventListenerWithId(aWindowId,
+                                                   "unload",
+                                                   handler);
+          SystemAppProxy.removeEventListenerWithId(aWindowId,
+                                                   "mozPresentationContentEvent",
+                                                   handler);
+          this.appLaunchCallback(evt.detail, aResolve, aReject);
+        }
+      };
+      // If system(-remote) app is closed.
+      SystemAppProxy.addEventListenerWithId(aWindowId,
+                                            "unload",
+                                            handler);
+      // Listen to the result for the opened iframe from front-end.
+      SystemAppProxy.addEventListenerWithId(aWindowId,
+                                            "mozPresentationContentEvent",
+                                            handler);
+      SystemAppProxy.sendCustomEventWithId(aWindowId,
+                                           "mozPresentationChromeEvent",
+                                           { type: "presentation-launch-receiver",
+                                             url: aUrl,
+                                             id: aSessionId });
+    });
+  },
+
+  // For 2-UA scenario
+  sendTo2UA: function(aUrl, aSessionId) {
+    return new Promise((aResolve, aReject) => {
+      let handler = (evt) => {
+        if (evt.type === "mozPresentationContentEvent" &&
+            evt.detail.id == aSessionId) {
+          SystemAppProxy.removeEventListener("mozPresentationContentEvent",
+                                            handler);
+          this.appLaunchCallback(evt.detail, aResolve, aReject);
+        }
+      };
+
+      // Listen to the result for the opened iframe from front-end.
+      SystemAppProxy.addEventListener("mozPresentationContentEvent",
+                                      handler);
+      SystemAppProxy._sendCustomEvent("mozPresentationChromeEvent",
+                                      { type: "presentation-launch-receiver",
+                                        url: aUrl,
+                                        id: aSessionId });
+    });
+  },
+
+  appLaunchCallback: function(aDetail, aResolve, aReject) {
+    switch(aDetail.type) {
+      case "presentation-receiver-launched":
+        aResolve(aDetail.frame);
+        break;
+      case "presentation-receiver-permission-denied":
+        aReject();
+        break;
+    }
+  },
+
+  classID: Components.ID("{ccc8a839-0b64-422b-8a60-fb2af0e376d0}"),
+
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIPresentationRequestUIGlue])
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PresentationRequestUIGlue]);