Add invite selection to create room dialog

src/controllers/molecules/UserSelector.js

@@ -0,0 +1,57 @@
+/*
+Copyright 2015 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+'use strict';
+
+var React = require('react');
+
+module.exports = {
+    propTypes: {
+        initially_selected: React.PropTypes.arrayOf(React.PropTypes.string),
+    },
+
+    getDefaultProps: function() {
+        return {
+            initially_selected: [],
+        };
+    },
+
+    getInitialState: function() {
+        return {
+            selected_users: this.props.initially_selected,
+        }
+    },
+
+    addUser: function(user_id) {
+        if (this.state.selected_users.indexOf(user_id == -1)) {
+            this.setState({
+                selected_users: this.state.selected_users.concat([user_id]),
+            });
+        }
+    },
+
+    removeUser: function(user_id) {
+        this.setState({
+            selected_users: this.state.selected_users.filter(function(e) {
+                return e != user_id;
+            }),
+        });
+    },
+
+    getUserIds: function() {
+        return this.state.selected_users;
+    }
+};