fradrive/frontend/src/utils/form/enter-is-tab.js
2021-06-01 09:17:54 +00:00

53 lines
1.4 KiB
JavaScript

import { Utility } from '../../core/utility';
const ENTER_IS_TAB_INITIALIZED_CLASS = 'enter-as-tab--initialized';
const AREA_SELECTOR = 'input, textarea';
@Utility({
selector: '[uw-enter-as-tab]',
})
export class EnterIsTab {
_element;
constructor(element) {
if(!element) {
throw new Error('EnterIsTab Utility cannot be setup without a field element');
}
this._element = element;
if (this._element.classList.contains(ENTER_IS_TAB_INITIALIZED_CLASS)) {
return false;
}
this._element.classList.add(ENTER_IS_TAB_INITIALIZED_CLASS);
}
start() {
this._element.addEventListener('keydown', (e) => {
if(e.key === 'Enter') {
e.preventDefault();
let currentInputFieldId = this._element.id;
let inputAreas = document.querySelectorAll(AREA_SELECTOR);
let nextInputArea = null;
for (let i = 0; i < inputAreas.length; i++) {
if(inputAreas[i].id === currentInputFieldId) {
nextInputArea = inputAreas[i+1];
break;
}
}
if(nextInputArea) {
nextInputArea.focus();
}
}
});
}
destroy() {
console.log('TBD: Destroy EnterIsTab');
}
}