56 lines
1.1 KiB
JavaScript
56 lines
1.1 KiB
JavaScript
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import ansi from 'ansi';
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const { stdout, stdin } = process;
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let listeners = [];
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const prefix = '\u001b';
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const keys = {
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right: `${prefix}[C`,
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up: `${prefix}[A`,
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left: `${prefix}[D`,
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down: `${prefix}[B`,
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exit: '\u0003',
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space: ' '
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}
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export default class Interface {
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constructor(output = stdout, input = stdin) {
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this.output = output;
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this.input = input;
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this.input.setRawMode(true);
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this.input.setEncoding('utf8');
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this.cursor = ansi(this.output).hide();
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this.columns = this.output.columns;
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this.rows = this.output.rows;
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this.input.addListener('data', data => {
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let key = Object.keys(keys).find((value, i) => {
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return keys[value] === data;
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});
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if ( key === 'exit' ) process.exit();
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let match = listeners.filter(listener => {
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return listener.key === key || listener.key === data;
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});
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match.forEach(listener => listener.fn());
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})
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}
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clear() {
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this.output.write('\u001b[2J\u001b[0;0H');
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}
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write(...args) {
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this.cursor.write(...args);
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}
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onKey(key, fn) {
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listeners.push({ key, fn });
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}
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}
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