From 529513606b74fce60cbb066b381b27fbb6ea9d52 Mon Sep 17 00:00:00 2001
From: Rodrigo Corsi <rodrigocorsi@gmail.com>
Date: Tue, 8 Mar 2016 09:38:09 -0300
Subject: Created component CodePreview

---
 webapp/components/code_preview.jsx | 101 +++++++++++++++++++++++++++++++++++++
 webapp/components/view_image.jsx   |  11 ++++
 2 files changed, 112 insertions(+)
 create mode 100644 webapp/components/code_preview.jsx

(limited to 'webapp/components')

diff --git a/webapp/components/code_preview.jsx b/webapp/components/code_preview.jsx
new file mode 100644
index 000000000..8d2bc6269
--- /dev/null
+++ b/webapp/components/code_preview.jsx
@@ -0,0 +1,101 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+import $ from 'jquery';
+import * as syntaxHightlighting from 'utils/syntax_hightlighting.jsx';
+import Constants from 'utils/constants.jsx';
+import FileInfoPreview from './file_info_preview.jsx';
+
+import React from 'react';
+
+export default class CodePreview extends React.Component {
+    constructor(props) {
+        super(props);
+
+        this.updateStateFromProps = this.updateStateFromProps.bind(this);
+        this.handleReceivedError = this.handleReceivedError.bind(this);
+        this.handleReceivedCode = this.handleReceivedCode.bind(this);
+
+        this.state = {
+            code: '',
+            lang: '',
+            loading: true,
+            success: true
+        };
+    }
+
+    componentDidMount() {
+        this.updateStateFromProps(this.props);
+    }
+
+    componentWillReceiveProps(nextProps) {
+        if (this.props.fileUrl !== nextProps.fileUrl) {
+            this.updateStateFromProps(nextProps);
+        }
+    }
+
+    updateStateFromProps(props) {
+        var usedLanguage = syntaxHightlighting.getLang(props.filename);
+
+        if (!usedLanguage || props.fileInfo.size > Constants.CODE_PREVIEW_MAX_FILE_SIZE) {
+            this.setState({code: '', lang: '', loading: false, success: false});
+            return;
+        }
+
+        this.setState({code: '', lang: usedLanguage, loading: true});
+
+        $.ajax({
+            async: true,
+            url: props.fileUrl,
+            type: 'GET',
+            error: this.handleReceivedError,
+            success: this.handleReceivedCode
+        });
+    }
+
+    handleReceivedCode(data) {
+	const parsed = syntaxHightlighting.formatCode(this.state.lang, data, this.props.filename)
+        this.setState({code: parsed, loading: false, success: true});
+    }
+
+    handleReceivedError() {
+        this.setState({loading: false, success: false});
+    }
+
+    static support(filename) {
+        return typeof syntaxHightlighting.getLang(filename) !== 'undefined';
+    }
+
+    render() {
+        if (this.state.loading) {
+            return (
+                <div className='view-image__loading'>
+                    <img
+                        className='loader-image'
+                        src='/static/images/load.gif'
+                    />
+                </div>
+            );
+        }
+
+        if (!this.state.success) {
+            return (
+                <FileInfoPreview
+                    filename={this.props.filename}
+                    fileUrl={this.props.fileUrl}
+                    fileInfo={this.props.fileInfo}
+                    formatMessage={this.props.formatMessage}
+                />
+            );
+        }
+
+        return <div dangerouslySetInnerHTML={{__html: this.state.code}}/>;
+    }
+}
+
+CodePreview.propTypes = {
+    filename: React.PropTypes.string.isRequired,
+    fileUrl: React.PropTypes.string.isRequired,
+    fileInfo: React.PropTypes.object.isRequired,
+    formatMessage: React.PropTypes.func.isRequired
+};
diff --git a/webapp/components/view_image.jsx b/webapp/components/view_image.jsx
index 2b7e03382..7572f88ae 100644
--- a/webapp/components/view_image.jsx
+++ b/webapp/components/view_image.jsx
@@ -7,6 +7,7 @@ import * as Client from 'utils/client.jsx';
 import * as Utils from 'utils/utils.jsx';
 import AudioVideoPreview from './audio_video_preview.jsx';
 import Constants from 'utils/constants.jsx';
+import CodePreview from './code_preview.jsx';
 import FileInfoPreview from './file_info_preview.jsx';
 import FileStore from 'stores/file_store.jsx';
 import ViewImagePopoverBar from './view_image_popover_bar.jsx';
@@ -254,6 +255,15 @@ class ViewImageModal extends React.Component {
                         formatMessage={this.props.intl.formatMessage}
                     />
                 );
+            } else if (CodePreview.support(filename)) {
+                content = (
+                    <CodePreview
+                        filename={filename}
+                        fileUrl={fileUrl}
+                        fileInfo={fileInfo}
+                        formatMessage={this.props.intl.formatMessage}
+                    />
+                );
             } else {
                 content = (
                     <FileInfoPreview
@@ -323,6 +333,7 @@ class ViewImageModal extends React.Component {
                         onClick={this.props.onModalDismissed}
                     >
                         <div
+                            className='modal-back'
                             onMouseEnter={this.onMouseEnterImage}
                             onMouseLeave={this.onMouseLeaveImage}
                             onClick={(e) => e.stopPropagation()}
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