Converting to Webpack. Stage 1.

webapp/components/error_bar.jsx

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+// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+import ErrorStore from 'stores/error_store.jsx';
+import * as Utils from 'utils/utils.jsx';
+
+import React from 'react';
+
+export default class ErrorBar extends React.Component {
+    constructor() {
+        super();
+
+        this.onErrorChange = this.onErrorChange.bind(this);
+        this.handleClose = this.handleClose.bind(this);
+
+        this.state = ErrorStore.getLastError();
+    }
+
+    isValidError(s) {
+        if (!s) {
+            return false;
+        }
+
+        if (!s.message) {
+            return false;
+        }
+
+        return true;
+    }
+
+    componentWillMount() {
+        if (global.window.mm_config.SendEmailNotifications === 'false') {
+            ErrorStore.storeLastError({message: Utils.localizeMessage('error_bar.preview_mode', 'Preview Mode: Email notifications have not been configured')});
+            this.onErrorChange();
+        }
+    }
+
+    componentDidMount() {
+        ErrorStore.addChangeListener(this.onErrorChange);
+    }
+
+    componentWillUnmount() {
+        ErrorStore.removeChangeListener(this.onErrorChange);
+    }
+
+    onErrorChange() {
+        var newState = ErrorStore.getLastError();
+
+        if (newState) {
+            this.setState(newState);
+        } else {
+            this.setState({message: null});
+        }
+    }
+
+    handleClose(e) {
+        if (e) {
+            e.preventDefault();
+        }
+
+        ErrorStore.clearLastError();
+        this.setState({message: null});
+    }
+
+    render() {
+        if (!this.isValidError(this.state)) {
+            return <div/>;
+        }
+
+        return (
+            <div className='error-bar'>
+                <span>{this.state.message}</span>
+                <a
+                    href='#'
+                    className='error-bar__close'
+                    onClick={this.handleClose}
+                >
+                    &times;
+                </a>
+            </div>
+        );
+    }
+}
+
+export default ErrorBar;