discourse/app/assets/javascripts/admin/components/expanding-text-area.js.es6

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import { on, observes } from 'ember-addons/ember-computed-decorators';
import autosize from 'discourse/lib/autosize';
export default Ember.TextArea.extend({
@on('didInsertElement')
_startWatching() {
Ember.run.scheduleOnce('afterRender', () => {
this.$().focus();
autosize(this.element);
});
},
@observes('value')
_updateAutosize() {
const evt = document.createEvent('Event');
evt.initEvent('autosize:update', true, false);
this.element.dispatchEvent(evt);
},
@on('willDestroyElement')
_disableAutosize() {
autosize.destroy(this.$());
}
});