consul/ui/packages/consul-ui/app/helpers/dom-position.js

31 lines
816 B
JavaScript

import Helper from '@ember/component/helper';
export default class DomPosition extends Helper {
compute([target], { from, offset = false }) {
return e => {
if (typeof target === 'function') {
let rect;
let $el;
if (offset) {
$el = e.currentTarget;
rect = {
width: $el.offsetWidth,
left: $el.offsetLeft,
height: $el.offsetHeight,
top: $el.offsetTop,
};
} else {
$el = e.target;
rect = $el.getBoundingClientRect();
if (typeof from !== 'undefined') {
const fromRect = from.getBoundingClientRect();
rect.x = rect.x - fromRect.x;
rect.y = rect.y - fromRect.y;
}
}
return target(rect);
}
};
}
}