/*
 * TipTip
 * Copyright 2010 Drew Wilson
 * www.drewwilson.com
 * code.drewwilson.com/entry/tiptip-jquery-plugin
 *
 * Version 1.3   -   Updated: Mar. 23, 2010
 *
 * This Plug-In will create a custom tooltip to replace the default
 * browser tooltip. It is extremely lightweight and very smart in
 * that it detects the edges of the browser window and will make sure
 * the tooltip stays within the current window size. As a result the
 * tooltip will adjust itself to be displayed above, below, to the left 
 * or to the right depending on what is necessary to stay within the
 * browser window. It is completely customizable as well via CSS.
 *
 * This TipTip jQuery plug-in is dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 */
(function($) {
	$.fn.tipTip = function(options) {
		var defaults = {
			activation : "hover",
			keepAlive : false,
			maxWidth : "200px",
			edgeOffset : 3,
			defaultPosition : "bottom",
			delay : 400,
			fadeIn : 200,
			fadeOut : 200,
			attribute : "title",
			content : false,
			enter : function() {
			},
			exit : function() {
			}
		};
		var opts = $.extend(defaults, options);
		if ($("#tiptip_holder").length <= 0) {
			var tiptip_holder = $('<div id="tiptip_holder" style="max-width:'
					+ opts.maxWidth + ';"></div>');
			var tiptip_content = $('<div id="tiptip_content"></div>');
			var tiptip_arrow = $('<div id="tiptip_arrow"></div>');
			$("body")
					.append(
							tiptip_holder
									.html(tiptip_content)
									.prepend(
											tiptip_arrow
													.html('<div id="tiptip_arrow_inner"></div>')))
		} else {
			var tiptip_holder = $("#tiptip_holder");
			var tiptip_content = $("#tiptip_content");
			var tiptip_arrow = $("#tiptip_arrow")
		}
		return this
				.each(function() {
					var org_elem = $(this);
					if (opts.content) {
						var org_title = opts.content
					} else {
						var org_title = org_elem.attr(opts.attribute)
					}
					if (org_title != "") {
						if (!opts.content) {
							org_elem.removeAttr(opts.attribute)
						}
						var timeout = false;
						if (opts.activation == "hover") {
							org_elem.hover(function() {
								active_tiptip()
							}, function() {
								if (!opts.keepAlive) {
									deactive_tiptip()
								}
							});
							if (opts.keepAlive) {
								tiptip_holder.hover(function() {
								}, function() {
									deactive_tiptip()
								})
							}
						} else if (opts.activation == "focus") {
							org_elem.focus(function() {
								active_tiptip()
							}).blur(function() {
								deactive_tiptip()
							})
						} else if (opts.activation == "click") {
							org_elem.click(function() {
								active_tiptip();
								return false
							}).hover(function() {
							}, function() {
								if (!opts.keepAlive) {
									deactive_tiptip()
								}
							});
							if (opts.keepAlive) {
								tiptip_holder.hover(function() {
								}, function() {
									deactive_tiptip()
								})
							}
						}
						function active_tiptip() {
							opts.enter.call(this);
							tiptip_content.html(org_title);
							tiptip_holder.hide().removeAttr("class").css(
									"margin", "0");
							tiptip_arrow.removeAttr("style");
							var top = parseInt(org_elem.offset()['top']);
							var left = parseInt(org_elem.offset()['left']);
							var org_width = parseInt(org_elem.outerWidth());
							var org_height = parseInt(org_elem.outerHeight());
							var tip_w = tiptip_holder.outerWidth();
							var tip_h = tiptip_holder.outerHeight();
							var w_compare = Math.round((org_width - tip_w) / 2);
							var h_compare = Math
									.round((org_height - tip_h) / 2);
							var marg_left = Math.round(left + w_compare);
							var marg_top = Math.round(top + org_height
									+ opts.edgeOffset);
							var t_class = "";
							var arrow_top = "";
							var arrow_left = Math.round(tip_w - 12) / 2;
							if (opts.defaultPosition == "bottom") {
								t_class = "_bottom"
							} else if (opts.defaultPosition == "top") {
								t_class = "_top"
							} else if (opts.defaultPosition == "left") {
								t_class = "_left"
							} else if (opts.defaultPosition == "right") {
								t_class = "_right"
							}
							var right_compare = (w_compare + left) < parseInt($(
									window).scrollLeft());
							var left_compare = (tip_w + left) > parseInt($(
									window).width());
							if ((right_compare && w_compare < 0)
									|| (t_class == "_right" && !left_compare)
									|| (t_class == "_left" && left < (tip_w
											+ opts.edgeOffset + 5))) {
								t_class = "_right";
								arrow_top = Math.round(tip_h - 13) / 2;
								arrow_left = -12;
								marg_left = Math.round(left + org_width
										+ opts.edgeOffset);
								marg_top = Math.round(top + h_compare)
							} else if ((left_compare && w_compare < 0)
									|| (t_class == "_left" && !right_compare)) {
								t_class = "_left";
								arrow_top = Math.round(tip_h - 13) / 2;
								arrow_left = Math.round(tip_w);
								marg_left = Math.round(left
										- (tip_w + opts.edgeOffset + 5));
								marg_top = Math.round(top + h_compare)
							}
							var top_compare = (top + org_height
									+ opts.edgeOffset + tip_h + 8) > parseInt($(
									window).height()
									+ $(window).scrollTop());
							var bottom_compare = ((top + org_height) - (opts.edgeOffset
									+ tip_h + 8)) < 0;
							if (top_compare
									|| (t_class == "_bottom" && top_compare)
									|| (t_class == "_top" && !bottom_compare)) {
								if (t_class == "_top" || t_class == "_bottom") {
									t_class = "_top"
								} else {
									t_class = t_class + "_top"
								}
								arrow_top = tip_h;
								marg_top = Math.round(top
										- (tip_h + 5 + opts.edgeOffset))
							} else if (bottom_compare
									| (t_class == "_top" && bottom_compare)
									|| (t_class == "_bottom" && !top_compare)) {
								if (t_class == "_top" || t_class == "_bottom") {
									t_class = "_bottom"
								} else {
									t_class = t_class + "_bottom"
								}
								arrow_top = -12;
								marg_top = Math.round(top + org_height
										+ opts.edgeOffset)
							}
							if (t_class == "_right_top"
									|| t_class == "_left_top") {
								marg_top = marg_top + 5
							} else if (t_class == "_right_bottom"
									|| t_class == "_left_bottom") {
								marg_top = marg_top - 5
							}
							if (t_class == "_left_top"
									|| t_class == "_left_bottom") {
								marg_left = marg_left + 5
							}
							tiptip_arrow.css({
								"margin-left" : arrow_left + "px",
								"margin-top" : arrow_top + "px"
							});
							tiptip_holder.css({
								"margin-left" : marg_left + "px",
								"margin-top" : marg_top + "px"
							}).attr("class", "tip" + t_class);
							if (timeout) {
								clearTimeout(timeout)
							}
							timeout = setTimeout(function() {
								if (tiptip_holder.text() == "")
									return;
								tiptip_holder.stop(true, true).fadeIn(
										opts.fadeIn)
							}, opts.delay)
						}
						function deactive_tiptip() {
							opts.exit.call(this);
							if (timeout) {
								clearTimeout(timeout)
							}
							tiptip_holder.fadeOut(opts.fadeOut)
						}
					}
				})
	}
})(jQuery);