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/* eslint-disable wrap-iife, func-names, strict, no-var, vars-on-top, no-param-reassign, object-shorthand, no-shadow, comma-dangle, prefer-template, consistent-return, no-mixed-operators, no-unused-vars, object-curly-spacing, no-unused-expressions, prefer-arrow-callback, max-len */
(function () {
'use strict';
function simulateEvent(el, type, options) {
var event;
if (!el) return;
var ownerDocument = el.ownerDocument;
options = options || {};
if (/^mouse/.test(type)) {
event = ownerDocument.createEvent('MouseEvents');
event.initMouseEvent(type, true, true, ownerDocument.defaultView,
options.button, options.screenX, options.screenY, options.clientX, options.clientY,
options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, el);
} else {
event = ownerDocument.createEvent('CustomEvent');
event.initCustomEvent(type, true, true, ownerDocument.defaultView,
options.button, options.screenX, options.screenY, options.clientX, options.clientY,
options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, el);
event.dataTransfer = {
data: {},
setData: function (type, val) {
this.data[type] = val;
},
getData: function (type) {
return this.data[type];
}
};
}
if (el.dispatchEvent) {
el.dispatchEvent(event);
} else if (el.fireEvent) {
el.fireEvent('on' + type, event);
}
return event;
}
function getTraget(target) {
var el = typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
var children = el.children;
return (
children[target.index] ||
children[target.index === 'first' ? 0 : -1] ||
children[target.index === 'last' ? children.length - 1 : -1]
);
}
function getRect(el) {
var rect = el.getBoundingClientRect();
var width = rect.right - rect.left;
var height = rect.bottom - rect.top;
return {
x: rect.left,
y: rect.top,
cx: rect.left + width / 2,
cy: rect.top + height / 2,
w: width,
h: height,
hw: width / 2,
wh: height / 2
};
}
function simulateDrag(options, callback) {
options.to.el = options.to.el || options.from.el;
var fromEl = getTraget(options.from);
var toEl = getTraget(options.to);
var scrollable = options.scrollable;
var fromRect = getRect(fromEl);
var toRect = getRect(toEl);
var startTime = new Date().getTime();
var duration = options.duration || 1000;
simulateEvent(fromEl, 'mousedown', {button: 0});
options.ontap && options.ontap();
window.SIMULATE_DRAG_ACTIVE = 1;
var dragInterval = setInterval(function loop() {
var progress = (new Date().getTime() - startTime) / duration;
var x = (fromRect.cx + (toRect.cx - fromRect.cx) * progress) - scrollable.scrollLeft;
var y = (fromRect.cy + (toRect.cy - fromRect.cy) * progress) - scrollable.scrollTop;
var overEl = fromEl.ownerDocument.elementFromPoint(x, y);
simulateEvent(overEl, 'mousemove', {
clientX: x,
clientY: y
});
if (progress >= 1) {
options.ondragend && options.ondragend();
simulateEvent(toEl, 'mouseup');
clearInterval(dragInterval);
window.SIMULATE_DRAG_ACTIVE = 0;
}
}, 100);
return {
target: fromEl,
fromList: fromEl.parentNode,
toList: toEl.parentNode
};
}
// Export
window.simulateEvent = simulateEvent;
window.simulateDrag = simulateDrag;
})();
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