mui.fixed.fastclick.js

/**
 * fastclick(only for radio,checkbox)
 */
(function($, window, name) {
	if (!$.os.android && !$.os.ios) { //目前仅识别android和ios
		return;
	}
	if (window.FastClick) {
		return;
	}

	var handle = function(event, target) {
		if (target.tagName === 'LABEL') {
			if (target.parentNode) {
				target = target.parentNode.querySelector('input');
			}
		}
		if (target && (target.type === 'radio' || target.type === 'checkbox')) {
			if (!target.disabled) { //disabled
				return target;
			}
		}
		return false;
	};

	$.registerTarget({
		name: name,
		index: 40,
		handle: handle,
		target: false
	});
	var dispatchEvent = function(event) {
		var targetElement = $.targets.click;
		if (targetElement) {
			var clickEvent, touch;
			// On some Android devices activeElement needs to be blurred otherwise the synthetic click will have no effect
			if (document.activeElement && document.activeElement !== targetElement) {
				document.activeElement.blur();
			}
			touch = event.detail.gesture.changedTouches[0];
			// Synthesise a click event, with an extra attribute so it can be tracked
			clickEvent = document.createEvent('MouseEvents');
			clickEvent.initMouseEvent('click', true, true, window, 1, touch.screenX, touch.screenY, touch.clientX, touch.clientY, false, false, false, false, 0, null);
			clickEvent.forwardedTouchEvent = true;
			targetElement.dispatchEvent(clickEvent);
			event.detail && event.detail.gesture.preventDefault();
		}
	};
	window.addEventListener('tap', dispatchEvent);
	window.addEventListener('doubletap', dispatchEvent);
	//捕获
	window.addEventListener('click', function(event) {
		if ($.targets.click) {
			if (!event.forwardedTouchEvent) { //stop click
				if (event.stopImmediatePropagation) {
					event.stopImmediatePropagation();
				} else {
					// Part of the hack for browsers that don't support Event#stopImmediatePropagation
					event.propagationStopped = true;
				}
				event.stopPropagation();
				event.preventDefault();
				return false;
			}
		}
	}, true);

})(mui, window, 'click');