doodle3d-client/js/libs/jquery-fastclick.js

/**
 * jQuery.fastClick.js
 *
 * Work around the 300ms delay for the click event in some mobile browsers.
 *
 * Code based on <http://code.google.com/mobile/articles/fast_buttons.html>
 *
 * @usage
 * $('button').fastClick(function() {alert('clicked!');});
 *
 * @license MIT
 * @author Dave Hulbert (dave1010)
 * @version 1.0.0 2013-01-17
 */

/*global document, window, jQuery, Math */

(function($) {

$.fn.fastClick = function(handler) {
	return $(this).each(function(){
		$.FastButton($(this)[0], handler);
	});
};

$.FastButton = function(element, handler) {
	var startX, startY;

	var reset = function() {
		$(element).unbind('touchend');
		$("body").unbind('touchmove.fastClick');
	};

	var onClick = function(event) {
		event.stopPropagation();
		reset();
		handler.call(this, event);

		if (event.type === 'touchend') {
			$.clickbuster.preventGhostClick(startX, startY);
		}
	};

	var onTouchMove = function(event) {
		if (Math.abs(event.originalEvent.touches[0].clientX - startX) > 10 ||
			Math.abs(event.originalEvent.touches[0].clientY - startY) > 10) {
			reset();
		}
	};

	var onTouchStart = function(event) {
		event.stopPropagation();

		$(element).bind('touchend', onClick);
		$("body").bind('touchmove.fastClick', onTouchMove);

		startX = event.originalEvent.touches[0].clientX;
		startY = event.originalEvent.touches[0].clientY;
	};

	$(element).bind({
		touchstart: onTouchStart,
		click: onClick
	});
};

$.clickbuster = {
	coordinates: [],

	preventGhostClick: function(x, y) {
		$.clickbuster.coordinates.push(x, y);
		window.setTimeout($.clickbuster.pop, 2500);
	},

	pop: function() {
		$.clickbuster.coordinates.splice(0, 2);
	},

	onClick: function(event) {
		var x, y, i;
		for (i = 0; i < $.clickbuster.coordinates.length; i += 2) {
			x = $.clickbuster.coordinates[i];
			y = $.clickbuster.coordinates[i + 1];
			if (Math.abs(event.clientX - x) < 25 && Math.abs(event.clientY - y) < 25) {
				event.stopPropagation();
				event.preventDefault();
			}
		}
	}
};

$(function(){
	if (document.addEventListener){
		document.addEventListener('click', $.clickbuster.onClick, true);
	} else if (document.attachEvent){
		// for IE 7/8
		document.attachEvent('onclick', $.clickbuster.onClick);
	}
});

}(jQuery));