p5.js-web-editor/client/modules/IDE/components/PreviewFrame.js

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JavaScript
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import React, { PropTypes } from 'react';
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import ReactDOM from 'react-dom';
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import escapeStringRegexp from 'escape-string-regexp';
import srcDoc from 'srcdoc-polyfill';
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const hijackConsoleScript = `<script>
document.addEventListener('DOMContentLoaded', function() {
var iframeWindow = window;
var originalConsole = iframeWindow.console;
iframeWindow.console = {};
var methods = [
'debug', 'clear', 'error', 'info', 'log', 'warn'
];
methods.forEach( function(method) {
iframeWindow.console[method] = function() {
originalConsole[method].apply(originalConsole, arguments);
var args = Array.from(arguments);
args = args.map(function(i) {
// catch objects
return (typeof i === 'string') ? i : JSON.stringify(i);
});
// post message to parent window
window.parent.postMessage({
method: method,
arguments: args,
source: 'sketch'
}, '*');
};
});
// catch reference errors, via http://stackoverflow.com/a/12747364/2994108
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window.onerror = function (msg, url, lineNumber, columnNo, error) {
var string = msg.toLowerCase();
var substring = "script error";
var data = {};
if (string.indexOf(substring) > -1){
data = 'Script Error: See Browser Console for Detail';
} else {
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data = msg + ' Line: ' + lineNumber + 'column: ' + columnNo;
}
window.parent.postMessage({
method: 'error',
arguments: data,
source: 'sketch'
}, '*');
return false;
};
});
</script>`;
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class PreviewFrame extends React.Component {
componentDidMount() {
if (this.props.isPlaying) {
this.renderFrameContents();
}
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if (this.props.dispatchConsoleEvent) {
window.addEventListener('message', (msg) => {
if (msg.data.source === 'sketch') {
this.props.dispatchConsoleEvent(msg);
}
});
}
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}
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componentDidUpdate(prevProps) {
if (this.props.isPlaying !== prevProps.isPlaying) {
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this.renderSketch();
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}
if (this.props.isPlaying && this.props.content !== prevProps.content) {
this.renderSketch();
}
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// I apologize for this, it is a hack.
if (this.props.isPlaying && this.props.files[0].id !== prevProps.files[0].id) {
this.renderSketch();
}
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}
componentWillUnmount() {
ReactDOM.unmountComponentAtNode(ReactDOM.findDOMNode(this).contentDocument.body);
}
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clearPreview() {
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const doc = ReactDOM.findDOMNode(this);
doc.srcDoc = '';
}
injectLocalFiles() {
let htmlFile = this.props.htmlFile.content;
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// have to build the array manually because the spread operator is only
// one level down...
const jsFiles = [];
this.props.jsFiles.forEach(jsFile => {
const newJSFile = { ...jsFile };
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let jsFileStrings = newJSFile.content.match(/(['"])((\\\1|.)*?)\1/gm);
jsFileStrings = jsFileStrings || [];
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jsFileStrings.forEach(jsFileString => {
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if (jsFileString.match(/^('|")(?!(http:\/\/|https:\/\/)).*\.(png|jpg|jpeg|gif|bmp|mp3|wav|aiff|ogg)('|")$/)) {
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const filePath = jsFileString.substr(1, jsFileString.length - 2);
let fileName = filePath;
if (fileName.match(/^\.\//)) {
fileName = fileName.substr(2, fileName.length - 1);
} else if (fileName.match(/^\//)) {
fileName = fileName.substr(1, fileName.length - 1);
}
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this.props.files.forEach(file => {
if (file.name === fileName) {
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newJSFile.content = newJSFile.content.replace(filePath, file.blobURL); // eslint-disable-line
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}
});
}
});
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jsFiles.push(newJSFile);
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});
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jsFiles.forEach(jsFile => {
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const fileName = escapeStringRegexp(jsFile.name);
const fileRegex = new RegExp(`<script.*?src=('|")((\.\/)|\/)?${fileName}('|").*?>([\s\S]*?)<\/script>`, 'gmi');
htmlFile = htmlFile.replace(fileRegex, `<script>\n${jsFile.content}\n</script>`);
});
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this.props.cssFiles.forEach(cssFile => {
const fileName = escapeStringRegexp(cssFile.name);
const fileRegex = new RegExp(`<link.*?href=('|")((\.\/)|\/)?${fileName}('|").*?>`, 'gmi');
htmlFile = htmlFile.replace(fileRegex, `<style>\n${cssFile.content}\n</style>`);
});
// const htmlHead = htmlFile.match(/(?:<head.*?>)([\s\S]*?)(?:<\/head>)/gmi);
// const headRegex = new RegExp('head', 'i');
// let htmlHeadContents = htmlHead[0].split(headRegex)[1];
// htmlHeadContents = htmlHeadContents.slice(1, htmlHeadContents.length - 2);
// htmlHeadContents += '<link rel="stylesheet" type="text/css" href="/preview-styles.css" />\n';
// htmlFile = htmlFile.replace(/(?:<head.*?>)([\s\S]*?)(?:<\/head>)/gmi, `<head>\n${htmlHeadContents}\n</head>`);
htmlFile += hijackConsoleScript;
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return htmlFile;
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}
renderSketch() {
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const doc = ReactDOM.findDOMNode(this);
if (this.props.isPlaying) {
srcDoc.set(doc, this.injectLocalFiles());
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} else {
doc.srcdoc = '';
srcDoc.set(doc, ' ');
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}
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}
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renderFrameContents() {
const doc = ReactDOM.findDOMNode(this).contentDocument;
if (doc.readyState === 'complete') {
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this.renderSketch();
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} else {
setTimeout(this.renderFrameContents, 0);
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}
}
render() {
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return (
<iframe
className="preview-frame"
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aria-label="sketch output"
role="main"
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tabIndex="0"
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frameBorder="0"
title="sketch output"
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sandbox="allow-scripts allow-pointer-lock allow-same-origin allow-popups allow-modals allow-forms"
/>
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);
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}
}
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PreviewFrame.propTypes = {
isPlaying: PropTypes.bool.isRequired,
head: PropTypes.object.isRequired,
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content: PropTypes.string,
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htmlFile: PropTypes.shape({
content: PropTypes.string.isRequired
}),
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jsFiles: PropTypes.array.isRequired,
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cssFiles: PropTypes.array.isRequired,
files: PropTypes.array.isRequired,
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dispatchConsoleEvent: PropTypes.func,
children: PropTypes.element
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};
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export default PreviewFrame;