Add TabCompleteBar. Hook up display to whether we are currently tab completing.

src/TabComplete.js

@@ -132,6 +132,9 @@ class TabComplete {
                 // they're resuming typing; reset tab complete state vars.
                 this.tabStruct.completing = false;
                 this.tabStruct.index = 0;
+                if (this.opts.onStateChange) {
+                    this.opts.onStateChange(this.tabStruct.completing);
+                }
                 return true;
             }
             return false;
@@ -148,6 +151,9 @@ class TabComplete {
             this.tabStruct.index = 0;
             // cache starting text
             this.tabStruct.original = this.textArea.value;
+            if (this.opts.onStateChange) {
+                this.opts.onStateChange(this.tabStruct.completing);
+            }
         }
 
         if (ev.shiftKey) {

src/component-index.js

@@ -65,6 +65,7 @@ module.exports.components['views.rooms.RoomHeader'] = require('./components/view
 module.exports.components['views.rooms.RoomList'] = require('./components/views/rooms/RoomList');
 module.exports.components['views.rooms.RoomSettings'] = require('./components/views/rooms/RoomSettings');
 module.exports.components['views.rooms.RoomTile'] = require('./components/views/rooms/RoomTile');
+module.exports.components['views.rooms.TabCompleteBar'] = require('./components/views/rooms/TabCompleteBar');
 module.exports.components['views.settings.ChangeAvatar'] = require('./components/views/settings/ChangeAvatar');
 module.exports.components['views.settings.ChangeDisplayName'] = require('./components/views/settings/ChangeDisplayName');
 module.exports.components['views.settings.ChangePassword'] = require('./components/views/settings/ChangePassword');

src/components/structures/RoomView.js

@@ -90,7 +90,10 @@ module.exports = React.createClass({
         // completing at the start of the text
         this.tabComplete = new TabComplete({
             startingWordSuffix: ": ",
-            wordSuffix: " "
+            wordSuffix: " ",
+            onStateChange: (isCompleting) => {
+                this.forceUpdate();
+            }
         });
     },
 
@@ -1284,6 +1287,12 @@ module.exports = React.createClass({
                         </div>
                     );
                 }
+                else if (this.tabComplete.isTabCompleting()) {
+                    var TabCompleteBar = sdk.getComponent('rooms.TabCompleteBar');
+                    statusBar = (
+                        <TabCompleteBar />
+                    );
+                }
                 else if (this.state.hasUnsentMessages) {
                     statusBar = (
                         <div className="mx_RoomView_connectionLostBar">

src/components/views/rooms/TabCompleteBar.js

@@ -0,0 +1,30 @@
+/*
+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');
+var MatrixClientPeg = require("../../../MatrixClientPeg");
+
+module.exports = React.createClass({
+    displayName: 'TabCompleteBar',
+
+    render: function() {
+        return (
+            <div> Tab Complete </div>
+        );
+    }
+});