Implement "Add room to group" feature

src/components/views/groups/GroupRoomTile.js

@@ -0,0 +1,89 @@
+/*
+Copyright 2017 New Vector 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.
+*/
+
+import React from 'react';
+import {MatrixClient} from 'matrix-js-sdk';
+import { _t } from '../../../languageHandler';
+import PropTypes from 'prop-types';
+import sdk from '../../../index';
+import dis from '../../../dispatcher';
+import { GroupRoomType } from '../../../groups';
+
+const GroupRoomTile = React.createClass({
+    displayName: 'GroupRoomTile',
+
+    propTypes: {
+        groupId: PropTypes.string.isRequired,
+        groupRoom: GroupRoomType.isRequired,
+    },
+
+    getInitialState: function() {
+        return {};
+    },
+
+    onClick: function(e) {
+        let roomId;
+        let roomAlias;
+        if (this.props.groupRoom.canonicalAlias) {
+            roomAlias = this.props.groupRoom.canonicalAlias;
+        } else {
+            roomId = this.props.groupRoom.roomId;
+        }
+        dis.dispatch({
+            action: 'view_room',
+            room_id: roomId,
+            room_alias: roomAlias,
+        });
+    },
+
+    render: function() {
+        const BaseAvatar = sdk.getComponent('avatars.BaseAvatar');
+        const AccessibleButton = sdk.getComponent('elements.AccessibleButton');
+
+        const name = this.props.groupRoom.name ||
+            this.props.groupRoom.canonicalAlias ||
+            _t("Unnamed Room");
+        const avatarUrl = this.context.matrixClient.mxcUrlToHttp(
+            this.props.groupRoom.avatarUrl,
+            36, 36, 'crop',
+        );
+
+        const av = (
+            <BaseAvatar name={name}
+                width={36} height={36}
+                url={avatarUrl}
+            />
+        );
+
+        return (
+            <AccessibleButton className="mx_GroupRoomTile" onClick={this.onClick}>
+                <div className="mx_GroupRoomTile_avatar">
+                    {av}
+                </div>
+                <div className="mx_GroupRoomTile_name">
+                    {name}
+                </div>
+            </AccessibleButton>
+        );
+    },
+});
+
+GroupRoomTile.contextTypes = {
+    matrixClient: React.PropTypes.instanceOf(MatrixClient).isRequired,
+};
+
+
+export default GroupRoomTile;