overleaf/services/web/frontend/js/directives/expandableTextArea.js

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// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
* decaffeinate suggestions:
* DS102: Remove unnecessary code created because of implicit returns
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
import App from '../base'
export default App.directive('expandableTextArea', function () {
return {
restrict: 'A',
link(scope, el) {
const resetHeight = function () {
const curHeight = el.outerHeight()
const fitHeight = el.prop('scrollHeight')
// clear height if text area is empty
if (el.val() === '') {
el.css('height', 'unset')
}
// otherwise expand to fit text
else if (fitHeight > curHeight) {
scope.$emit('expandable-text-area:resize')
el.css('height', fitHeight)
}
}
return scope.$watch(() => el.val(), resetHeight)
},
}
})