improve collapsed LHS implementation - split the tooltip into its own component; position it with javascript as overflow-y + position absolute = clipping hell; preserve the collapse state between MatrixChat re-renders; fix positioning of the 'show' button; switch to dispatcher for show/hide LHS; remove errant scrollbars

src/skins/vector/views/molecules/RoomTooltip.js

@@ -0,0 +1,53 @@
+/*
+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 classNames = require('classnames');
+
+var MatrixClientPeg = require('matrix-react-sdk/lib/MatrixClientPeg');
+
+var sdk = require('matrix-react-sdk')
+var dis = require('matrix-react-sdk/lib/dispatcher');
+
+module.exports = React.createClass({
+    displayName: 'RoomTooltip',
+
+    componentDidMount: function() {
+        // tell the roomlist about us
+        dis.dispatch({
+            action: 'view_tooltip',
+            tooltip: this.getDOMNode(),
+        });
+    },
+
+    componentDidUnmount: function() {
+        dis.dispatch({
+            action: 'view_tooltip',
+            tooltip: null,
+        });
+    },
+
+    render: function() {
+        return (
+            <div className="mx_RoomTooltip">
+                 <img className="mx_RoomTooltip_chevron" src="img/chevron-left.png" width="9" height="16"/>
+                 { this.props.room.name }
+            </div>
+        );
+    }
+});