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/RoomTile.js

@@ -71,15 +71,13 @@ module.exports = React.createClass({
         }
         */
 
-        var nameElement;
+        var label;
         if (!this.props.collapsed) {
-            nameElement = <div className="mx_RoomTile_name">{name}</div>;
+            label = <div className="mx_RoomTile_name">{name}</div>;
         }
         else if (this.state.hover) {
-            nameElement = <div className="mx_RoomTile_tooltip">
-                            <img className="mx_RoomTile_chevron" src="img/chevron-left.png" width="9" height="16"/>
-                            { name }
-                          </div>;
+            var RoomTooltip = sdk.getComponent("molecules.RoomTooltip");
+            label = <RoomTooltip room={this.props.room} ref="roomTooltip"/>;
         }
 
         var RoomAvatar = sdk.getComponent('atoms.RoomAvatar');
@@ -89,7 +87,7 @@ module.exports = React.createClass({
                     <RoomAvatar room={this.props.room} />
                     { badge }
                 </div>
-                { nameElement }
+                { label }
             </div>
         );
     }

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>
+        );
+    }
+});

src/skins/vector/views/organisms/LeftPanel.js

@@ -18,22 +18,15 @@ limitations under the License.
 
 var React = require('react');
 var sdk = require('matrix-react-sdk')
+var dis = require('matrix-react-sdk/lib/dispatcher');
 
 module.exports = React.createClass({
     displayName: 'LeftPanel',
 
-    getInitialState: function() {
-        return {
-            collapsed: false,
-        };
-    },
-
-    onShowClick: function() {
-        this.setState({ collapsed : false });
-    },
-
     onHideClick: function() {
-        this.setState({ collapsed : true });
+        dis.dispatch({
+            action: 'hide_left_panel',
+        });
     },
 
     render: function() {
@@ -43,9 +36,8 @@ module.exports = React.createClass({
 
         var collapseButton;
         var classes = "mx_LeftPanel";
-        if (this.state.collapsed) {
+        if (this.props.collapsed) {
             classes += " collapsed";
-            collapseButton = <img className="mx_LeftPanel_showButton" onClick={ this.onShowClick } src="img/menu.png" width="27" height="20" alt=">"/>
         }
         else {
             collapseButton = <img className="mx_LeftPanel_hideButton" onClick={ this.onHideClick } src="img/hide.png" width="12" height="20" alt="<"/>   
@@ -55,7 +47,7 @@ module.exports = React.createClass({
             <aside className={classes}>
                 { collapseButton }
                 <IncomingCallBox />
-                <RoomList selectedRoom={this.props.selectedRoom} collapsed={this.state.collapsed}/>
+                <RoomList selectedRoom={this.props.selectedRoom} collapsed={this.props.collapsed}/>
                 <BottomLeftMenu />
             </aside>
         );

src/skins/vector/views/organisms/RoomList.js

@@ -18,6 +18,7 @@ limitations under the License.
 
 var React = require('react');
 var sdk = require('matrix-react-sdk')
+var dis = require('matrix-react-sdk/lib/dispatcher');
 
 var RoomListController = require('../../../../controllers/organisms/RoomList')
 
@@ -25,6 +26,12 @@ module.exports = React.createClass({
     displayName: 'RoomList',
     mixins: [RoomListController],
 
+    onShowClick: function() {
+        dis.dispatch({
+            action: 'show_left_panel',
+        });
+    },
+
     render: function() {
         var CallView = sdk.getComponent('molecules.voip.CallView');
         var RoomDropTarget = sdk.getComponent('molecules.RoomDropTarget');
@@ -34,15 +41,17 @@ module.exports = React.createClass({
             callElement = <CallView className="mx_MatrixChat_callView"/>
         }
 
-        var recentsLabel = this.props.collapsed ? "" : "Recents";
+        var recentsLabel = this.props.collapsed ? 
+                           <img onClick={ this.onShowClick } src="img/menu.png" width="27" height="20" alt=">"/> :
+                           "Recents";
 
         return (
-            <div className="mx_RoomList">
+            <div className="mx_RoomList" onScroll={this._repositionTooltip}>
                 {callElement}
                 <h2 className="mx_RoomList_favourites_label">Favourites</h2>
                 <RoomDropTarget text="Drop here to favourite"/>
 
-                <h2 className="mx_RoomList_recents_label">{ recentsLabel }&nbsp;</h2>
+                <h2 className="mx_RoomList_recents_label">{ recentsLabel }</h2>
                 <div className="mx_RoomList_recents">
                     {this.makeRoomTiles()}
                 </div>

src/skins/vector/views/pages/MatrixChat.js

@@ -79,7 +79,7 @@ module.exports = React.createClass({
                         <div className="mx_MatrixChat_wrapper">
                             <MatrixToolbar />
                             <div className="mx_MatrixChat mx_MatrixChat_toolbarShowing">
-                                <LeftPanel selectedRoom={this.state.currentRoom} />
+                                <LeftPanel selectedRoom={this.state.currentRoom} collapsed={this.state.collapse_lhs} />
                                 <main className="mx_MatrixChat_middlePanel">
                                     {page_element}
                                 </main>
@@ -91,7 +91,7 @@ module.exports = React.createClass({
             else {
                 return (
                         <div className="mx_MatrixChat">
-                            <LeftPanel selectedRoom={this.state.currentRoom} />
+                            <LeftPanel selectedRoom={this.state.currentRoom} collapsed={this.state.collapse_lhs} />
                             <main className="mx_MatrixChat_middlePanel">
                                 {page_element}
                             </main>