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

257 lines
7.7 KiB
JavaScript

import React, { PropTypes } from 'react';
import ReactDOM from 'react-dom';
import escapeStringRegexp from 'escape-string-regexp';
import srcDoc from 'srcdoc-polyfill';
const startTag = '@fs-';
function getAllScriptOffsets(htmlFile) {
const offs = [];
let found = true;
let lastInd = 0;
let ind = 0;
let endFilenameInd = 0;
let filename = '';
let lineOffset = 0;
while (found) {
ind = htmlFile.indexOf(startTag, lastInd);
if (ind === -1) {
found = false;
} else {
endFilenameInd = htmlFile.indexOf('.js', ind + startTag.length + 3);
filename = htmlFile.substring(ind + startTag.length, endFilenameInd);
lineOffset = htmlFile.substring(0, ind).split('\n').length;
offs.push([lineOffset, filename]);
lastInd = ind + 1;
}
}
return offs;
}
function hijackConsoleLogsScript() {
const s = `<script>
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'
}, '*');
};
});
</script>`;
return s;
}
function hijackConsoleErrorsScript(offs) {
const s = `<script>
function getScriptOff(line) {
var offs = ${offs};
var l = 0;
var file = '';
for (var i=0; i<offs.length; i++) {
var n = offs[i][0];
if (n < line && n > l) {
l = n;
file = offs[i][1];
}
}
return [line - l, file];
}
// catch reference errors, via http://stackoverflow.com/a/12747364/2994108
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 {
var fileInfo = getScriptOff(lineNumber);
data = msg + ' (' + fileInfo[1] + ': line ' + fileInfo[0] + ')';
}
window.parent.postMessage({
method: 'error',
arguments: data,
source: 'sketch'
}, '*');
return false;
};
</script>`;
return s;
}
class PreviewFrame extends React.Component {
componentDidMount() {
if (this.props.isPlaying) {
this.renderFrameContents();
}
if (this.props.dispatchConsoleEvent) {
window.addEventListener('message', (msg) => {
if (msg.data.source === 'sketch') {
this.props.dispatchConsoleEvent(msg);
}
});
}
}
componentDidUpdate(prevProps) {
if (this.props.isPlaying !== prevProps.isPlaying) {
this.renderSketch();
}
if (this.props.isPlaying && this.props.content !== prevProps.content) {
this.renderSketch();
}
// I apologize for this, it is a hack. A simple way to check if the files have changed.
if (this.props.isPlaying && this.props.files[0].id !== prevProps.files[0].id) {
this.renderSketch();
}
}
componentWillUnmount() {
ReactDOM.unmountComponentAtNode(ReactDOM.findDOMNode(this).contentDocument.body);
}
clearPreview() {
const doc = ReactDOM.findDOMNode(this);
doc.srcDoc = '';
}
injectLocalFiles() {
let htmlFile = this.props.htmlFile.content;
let scriptOffs = [];
// have to build the array manually because the spread operator is only
// one level down...
htmlFile = hijackConsoleLogsScript() + htmlFile;
const jsFiles = [];
this.props.jsFiles.forEach(jsFile => {
const newJSFile = { ...jsFile };
let jsFileStrings = newJSFile.content.match(/(['"])((\\\1|.)*?)\1/gm);
const jsFileRegex = /^('|")(?!(http:\/\/|https:\/\/)).*\.(png|jpg|jpeg|gif|bmp|mp3|wav|aiff|ogg|json)('|")$/i;
jsFileStrings = jsFileStrings || [];
jsFileStrings.forEach(jsFileString => {
if (jsFileString.match(jsFileRegex)) {
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);
}
this.props.files.forEach(file => {
if (file.name === fileName) {
newJSFile.content = newJSFile.content.replace(filePath, file.blobURL); // eslint-disable-line
}
});
}
});
jsFiles.push(newJSFile);
});
jsFiles.forEach(jsFile => {
const fileName = escapeStringRegexp(jsFile.name);
const fileRegex = new RegExp(`<script.*?src=('|")((\.\/)|\/)?${fileName}('|").*?>([\s\S]*?)<\/script>`, 'gmi');
const replacementString = `<script data-tag="${startTag}${jsFile.name}">\n${jsFile.content}\n</script>`;
htmlFile = htmlFile.replace(fileRegex, replacementString);
});
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>`);
});
if (this.props.textOutput || this.props.isTextOutputPlaying) {
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 += '<script src="/loadData.js"></script>\n';
htmlHeadContents += '<script src="/interceptor-functions.js"></script>\n';
htmlHeadContents += '<script src="/intercept-p5.js"></script>\n';
htmlHeadContents += '<script type="text/javascript" src="/ntc.min.js"></script>';
htmlFile = htmlFile.replace(/(?:<head.*?>)([\s\S]*?)(?:<\/head>)/gmi, `<head>\n${htmlHeadContents}\n</head>`);
}
scriptOffs = getAllScriptOffsets(htmlFile);
htmlFile += hijackConsoleErrorsScript(JSON.stringify(scriptOffs));
return htmlFile;
}
renderSketch() {
const doc = ReactDOM.findDOMNode(this);
if (this.props.isPlaying) {
srcDoc.set(doc, this.injectLocalFiles());
} else {
doc.srcdoc = '';
srcDoc.set(doc, ' ');
}
}
renderFrameContents() {
const doc = ReactDOM.findDOMNode(this).contentDocument;
if (doc.readyState === 'complete') {
this.renderSketch();
} else {
setTimeout(this.renderFrameContents, 0);
}
}
render() {
return (
<iframe
className="preview-frame"
aria-label="sketch output"
role="main"
tabIndex="0"
frameBorder="0"
title="sketch output"
sandbox="allow-scripts allow-pointer-lock allow-same-origin allow-popups allow-modals allow-forms"
/>
);
}
}
PreviewFrame.propTypes = {
isPlaying: PropTypes.bool.isRequired,
head: PropTypes.object.isRequired,
content: PropTypes.string,
htmlFile: PropTypes.shape({
content: PropTypes.string.isRequired
}),
jsFiles: PropTypes.array.isRequired,
cssFiles: PropTypes.array.isRequired,
files: PropTypes.array.isRequired,
dispatchConsoleEvent: PropTypes.func,
children: PropTypes.element
};
export default PreviewFrame;