39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
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);
|
|
} else {
|
|
// if we are using this as part of an on-resize
|
|
// provide and easy way to map coords to CSS props
|
|
const $el = e.target;
|
|
const rect = $el.getBoundingClientRect();
|
|
target.forEach(([prop, value]) => {
|
|
$el.style[value] = `${rect[prop]}px`;
|
|
});
|
|
}
|
|
};
|
|
}
|
|
}
|