1 files changed, 88 insertions, 0 deletions
diff --git a/services/cloudsync/CloudSyncAdapters.jsm b/services/cloudsync/CloudSyncAdapters.jsm
new file mode 100644
index 0000000000..16264a4f76
--- /dev/null
+++ b/services/cloudsync/CloudSyncAdapters.jsm
@@ -0,0 +1,88 @@
+/* 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";
+
+this.EXPORTED_SYMBOLS = ["Adapters"];
+
+Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/CloudSyncEventSource.jsm");
+
+this.Adapters = function () {
+  let eventTypes = [
+    "sync",
+  ];
+
+  let suspended = true;
+
+  let suspend = function () {
+    if (!suspended) {
+      Services.obs.removeObserver(observer, "cloudsync:user-sync", false);
+      suspended = true;
+    }
+  }.bind(this);
+
+  let resume = function () {
+    if (suspended) {
+      Services.obs.addObserver(observer, "cloudsync:user-sync", false);
+      suspended = false;
+    }
+  }.bind(this);
+
+  let eventSource = new EventSource(eventTypes, suspend, resume);
+  let registeredAdapters = new Map();
+
+  function register (name, opts) {
+    opts = opts || {};
+    registeredAdapters.set(name, opts);
+  }
+
+  function unregister (name) {
+    if (!registeredAdapters.has(name)) {
+      throw new Error("adapter is not registered: " + name)
+    }
+    registeredAdapters.delete(name);
+  }
+
+  function getAdapterNames () {
+    let result = [];
+    for (let name of registeredAdapters.keys()) {
+      result.push(name);
+    }
+    return result;
+  }
+
+  function getAdapter (name) {
+    if (!registeredAdapters.has(name)) {
+      throw new Error("adapter is not registered: " + name)
+    }
+    return registeredAdapters.get(name);
+  }
+
+  function countAdapters () {
+    return registeredAdapters.size;
+  }
+
+  let observer = {
+    observe: function (subject, topic, data) {
+      switch (topic) {
+        case "cloudsync:user-sync":
+          eventSource.emit("sync");
+          break;
+      }
+    }
+  };
+
+  this.addEventListener = eventSource.addEventListener;
+  this.removeEventListener = eventSource.removeEventListener;
+  this.register = register.bind(this);
+  this.get = getAdapter.bind(this);
+  this.unregister = unregister.bind(this);
+  this.__defineGetter__("names", getAdapterNames);
+  this.__defineGetter__("count", countAdapters);
+};
+
+Adapters.prototype = {
+
+};