138 lines
3.5 KiB
JavaScript
138 lines
3.5 KiB
JavaScript
function simulateEvent(el, type, options = {}) {
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let event;
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if (!el) return null;
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if (/^mouse/.test(type)) {
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event = el.ownerDocument.createEvent('MouseEvents');
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event.initMouseEvent(type, true, true, el.ownerDocument.defaultView,
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options.button, options.screenX, options.screenY, options.clientX, options.clientY,
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options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, el);
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} else {
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event = el.ownerDocument.createEvent('CustomEvent');
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event.initCustomEvent(type, true, true, el.ownerDocument.defaultView,
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options.button, options.screenX, options.screenY, options.clientX, options.clientY,
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options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, el);
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event.dataTransfer = {
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data: {},
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setData(key, val) {
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this.data[key] = val;
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},
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getData(key) {
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return this.data[key];
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},
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};
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}
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if (el.dispatchEvent) {
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el.dispatchEvent(event);
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} else if (el.fireEvent) {
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el.fireEvent(`on${type}`, event);
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}
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return event;
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}
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function isLast(target) {
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const el = typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
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const children = el.children;
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return children.length - 1 === target.index;
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}
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function getTarget(target) {
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const el = typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
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const children = el.children;
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return (
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children[target.index] ||
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children[target.index === 'first' ? 0 : -1] ||
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children[target.index === 'last' ? children.length - 1 : -1] ||
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el
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);
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}
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function getRect(el) {
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const rect = el.getBoundingClientRect();
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const width = rect.right - rect.left;
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const height = (rect.bottom - rect.top) + 10;
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return {
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x: rect.left,
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y: rect.top,
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cx: rect.left + (width / 2),
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cy: rect.top + (height / 2),
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w: width,
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h: height,
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hw: width / 2,
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wh: height / 2,
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};
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}
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export default function simulateDrag(options) {
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const { to, from } = options;
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to.el = to.el || from.el;
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const fromEl = getTarget(from);
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const toEl = getTarget(to);
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const firstEl = getTarget({
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el: to.el,
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index: 'first',
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});
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const lastEl = getTarget({
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el: options.to.el,
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index: 'last',
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});
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const fromRect = getRect(fromEl);
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const toRect = getRect(toEl);
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const firstRect = getRect(firstEl);
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const lastRect = getRect(lastEl);
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const startTime = new Date().getTime();
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const duration = options.duration || 1000;
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simulateEvent(fromEl, 'mousedown', {
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button: 0,
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clientX: fromRect.cx,
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clientY: fromRect.cy,
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});
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if (options.ontap) options.ontap();
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window.SIMULATE_DRAG_ACTIVE = 1;
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if (options.to.index === 0) {
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toRect.cy = firstRect.y;
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} else if (isLast(options.to)) {
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toRect.cy = lastRect.y + lastRect.h + 50;
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}
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const dragInterval = setInterval(() => {
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const progress = (new Date().getTime() - startTime) / duration;
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const x = (fromRect.cx + ((toRect.cx - fromRect.cx) * progress));
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const y = (fromRect.cy + ((toRect.cy - fromRect.cy) * progress));
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const overEl = fromEl.ownerDocument.elementFromPoint(x, y);
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simulateEvent(overEl, 'mousemove', {
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clientX: x,
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clientY: y,
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});
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if (progress >= 1) {
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if (options.ondragend) options.ondragend();
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simulateEvent(toEl, 'mouseup');
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clearInterval(dragInterval);
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window.SIMULATE_DRAG_ACTIVE = 0;
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}
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}, 100);
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return {
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target: fromEl,
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fromList: fromEl.parentNode,
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toList: toEl.parentNode,
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};
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}
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