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toasted-nutbread 2020-03-07 10:48:56 -05:00
parent 93aa275d82
commit ba64f34df1
1 changed files with 18 additions and 18 deletions
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36
ext/bg/js/clipboard-monitor.js
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@ -21,59 +21,59 @@
class ClipboardMonitor extends EventDispatcher {
constructor({getClipboard}) {
super();
this.timerId = null;
this.timerToken = null;
this.interval = 250;
this.previousText = null;
this.getClipboard = getClipboard;
this._timerId = null;
this._timerToken = null;
this._interval = 250;
this._previousText = null;
this._getClipboard = getClipboard;
}
start() {
this.stop();
// The token below is used as a unique identifier to ensure that a new clipboard monitor
// hasn't been started during the await call. The check below the await this.getClipboard()
// hasn't been started during the await call. The check below the await this._getClipboard()
// call will exit early if the reference has changed.
const token = {};
const intervalCallback = async () => {
this.timerId = null;
this._timerId = null;
let text = null;
try {
text = await this.getClipboard();
text = await this._getClipboard();
} catch (e) {
// NOP
}
if (this.timerToken !== token) { return; }
if (this._timerToken !== token) { return; }
if (
typeof text === 'string' &&
(text = text.trim()).length > 0 &&
text !== this.previousText
text !== this._previousText
) {
this.previousText = text;
this._previousText = text;
if (jpIsStringPartiallyJapanese(text)) {
this.trigger('change', {text});
}
}
this.timerId = setTimeout(intervalCallback, this.interval);
this._timerId = setTimeout(intervalCallback, this._interval);
};
this.timerToken = token;
this._timerToken = token;
intervalCallback();
}
stop() {
this.timerToken = null;
if (this.timerId !== null) {
clearTimeout(this.timerId);
this.timerId = null;
this._timerToken = null;
if (this._timerId !== null) {
clearTimeout(this._timerId);
this._timerId = null;
}
}
setPreviousText(text) {
this.previousText = text;
this._previousText = text;
}
}