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

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import React, { PropTypes } from 'react';
import InlineSVG from 'react-inlinesvg';
const upArrowUrl = require('../../../images/up-arrow.svg');
const downArrowUrl = require('../../../images/down-arrow.svg');
import classNames from 'classnames';
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/**
* How many console messages to store
* @type {Number}
*/
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const consoleMax = 100;
class Console extends React.Component {
constructor(props) {
super(props);
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/**
* An array of React Elements that include previous console messages
* @type {Array}
*/
this.children = [];
}
componentWillReceiveProps(nextProps) {
if (nextProps.isPlaying && !this.props.isPlaying) {
this.children = [];
} else if (nextProps.consoleEvent !== this.props.consoleEvent) {
const args = nextProps.consoleEvent.arguments;
const method = nextProps.consoleEvent.method;
const nextChild = (
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<div key={this.children.length} className={`preview-console__${method}`}>
{Object.keys(args).map((key) => <span key={`${this.children.length}-${key}`}>{args[key]}</span>)}
</div>
);
this.children.push(nextChild);
}
}
shouldComponentUpdate(nextProps) {
return (nextProps.consoleEvent !== this.props.consoleEvent)
|| (nextProps.isPlaying && !this.props.isPlaying)
|| (this.props.isExpanded !== nextProps.isExpanded);
}
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componentDidUpdate() {
this.refs.console_messages.scrollTop = this.refs.console_messages.scrollHeight;
}
render() {
const childrenToDisplay = this.children.slice(-consoleMax);
const consoleClass = classNames({
'preview-console': true,
'preview-console--collapsed': !this.props.isExpanded
});
return (
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<div ref="console" className={consoleClass} role="region" tabIndex="0" title="console">
<div className="preview-console__header">
<h2 className="preview-console__header-title">console</h2>
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<button className="preview-console__collapse" onClick={this.props.collapseConsole} aria-label="collapse console">
<InlineSVG src={downArrowUrl} />
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</button>
<button className="preview-console__expand" onClick={this.props.expandConsole} aria-label="expand console">
<InlineSVG src={upArrowUrl} />
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</button>
</div>
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<div ref="console_messages" className="preview-console__messages">
{childrenToDisplay}
</div>
</div>
);
}
}
Console.propTypes = {
consoleEvent: PropTypes.object,
isPlaying: PropTypes.bool.isRequired,
isExpanded: PropTypes.bool.isRequired,
collapseConsole: PropTypes.func.isRequired,
expandConsole: PropTypes.func.isRequired
};
export default Console;