Add component for the directory search box

src/components/views/elements/DirectorySearchBox.js

@@ -0,0 +1,85 @@
+/*
+Copyright 2016 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.
+*/
+
+import React from 'react';
+import classnames from 'classnames';
+
+export default class DirectorySearchBox extends React.Component {
+    constructor() {
+        super();
+        this.collectInput = this.collectInput.bind(this);
+        this.onClearClick = this.onClearClick.bind(this);
+        this.onChange = this.onChange.bind(this);
+        this.onKeyUp = this.onKeyUp.bind(this);
+
+        this.input = null;
+    }
+
+    collectInput(e) {
+        this.input = e;
+    }
+
+    onClearClick() {
+        if (this.input) {
+            this.input.value = '';
+            this.input.focus();
+
+            if (this.props.onClear) {
+                this.props.onClear();
+            }
+        }
+    }
+
+    onChange() {
+        if (!this.input) return;
+
+        if (this.props.onChange) {
+            this.props.onChange(this.input.value);
+        }
+    }
+
+    onKeyUp(ev) {
+        if (ev.key == 'Enter') {
+            if (this.props.onJoinClick) {
+                this.props.onJoinClick(this.input.value);
+            }
+        }
+    }
+
+    render() {
+        const searchbox_classes = {
+            mx_DirectorySearchBox: true,
+        };
+        searchbox_classes[this.props.className] = true;
+
+        return <span className={classnames(searchbox_classes)}>
+            <input type="text" size="64"
+                className="mx_DirectorySearchBox_input"
+                ref={this.collectInput}
+                onChange={this.onChange} onKeyUp={this.onKeyUp}
+                placeholder="Find a room by keyword or room ID (#matrix:matrix.org)"
+            />
+            <span className="mx_DirectorySearchBox_clear" onClick={this.onClearClick} />
+        </span>;
+    }
+}
+
+DirectorySearchBox.propTypes = {
+    className: React.PropTypes.string,
+    onChange: React.PropTypes.func,
+    onClear: React.PropTypes.func,
+    onJoinClick: React.PropTypes.func,
+};