// tipsy, facebook style tooltips for jquery
// version 1.0.0a
// (c) 2008-2010 jason frame [jason@onehackoranother.com]
// releated under the MIT license

/*
Bugfix by SP
	Restore $element.title after tip died.
*/

(function($) {

	function fixTitle($ele) {
		if ($ele.attr('title') || typeof($ele.attr('original-title')) != 'string') {
			$ele.attr('original-title', $ele.attr('title') || '').removeAttr('title');
		}
	}

	function restoreTitle($ele) { /* Added by SP */
		if(typeof($ele.attr('original-title'))=='string'){
			$ele.attr('title',$ele.attr('original-title')||'').removeAttr('original-title');
		}
	}

	function Tipsy(element, options) {
		this.$element = $(element);
		this.options = options;
		this.enabled = true;
		fixTitle(this.$element);
	}

	Tipsy.prototype = {
		show: function() {
			var title = this.getTitle();
			if (title && this.enabled) {
				var $tip = this.tip();

				$tip.find('.tipsy-inner')[this.options.html ? 'html' : 'text'](title);
				$tip[0].className = 'tipsy'; // reset classname in case of dynamic gravity
				$tip.remove().css({top: 0, left: 0, visibility: 'hidden', display: 'block'}).appendTo(document.body);

			var pos = $.extend({}, this.$element.offset(), {
				width: this.$element[0].offsetWidth,
				height: this.$element[0].offsetHeight
			});

			var actualWidth = $tip[0].offsetWidth, actualHeight = $tip[0].offsetHeight;
			var gravity = (typeof this.options.gravity == 'function')
			? this.options.gravity.call(this.$element[0])
			: this.options.gravity;

			var tp;
			switch (gravity.charAt(0)) {
				case 'n':
				tp = {top: pos.top + pos.height + this.options.offset, left: pos.left + pos.width / 2 - actualWidth / 2};
				break;
				case 's':
				tp = {top: pos.top - actualHeight - this.options.offset, left: pos.left + pos.width / 2 - actualWidth / 2};
				break;
				case 'e':
				tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth - this.options.offset};
				break;
				case 'w':
				tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width + this.options.offset};
				break;
			}

			if (gravity.length == 2) {
				if (gravity.charAt(1) == 'w') {
					tp.left = pos.left + pos.width / 2 - 15;
				} else {
					tp.left = pos.left + pos.width / 2 - actualWidth + 15;
				}
			}

			$tip.css(tp).addClass('tipsy-' + gravity);

			if (this.options.fade) {
				$tip.stop().css({opacity: 0, display: 'block', visibility: 'visible'}).animate({opacity: this.options.opacity});
			} else {
				$tip.css({visibility: 'visible', opacity: this.options.opacity});
			}
		}
	},

	hide: function() {
		if (this.options.fade) {
			this.tip().stop().fadeOut(function() { $(this).remove(); });
		} else {
			this.tip().remove();
		}
		restoreTitle(this.$element); /* Added by SP */
	},

	getTitle: function() {
		var title, $e = this.$element, o = this.options;
		fixTitle($e);
		var title, o = this.options;
		if (typeof o.title == 'string') {
			title = $e.attr(o.title == 'title' ? 'original-title' : o.title);
		} else if (typeof o.title == 'function') {
			title = o.title.call($e[0]);
		}
		title = ('' + title).replace(/(^\s*|\s*$)/, "");
		return title || o.fallback;
	},

	tip: function() {
		if (!this.$tip) {
			this.$tip = $('<div class="tipsy"></div>').html('<div class="tipsy-arrow"></div><div class="tipsy-inner"/></div>');
		}
		return this.$tip;
	},

	validate: function() {
		if (!this.$element[0].parentNode) {
			this.hide();
			this.$element = null;
			this.options = null;
		}
	},

	enable: function() { this.enabled = true; },
	disable: function() { this.enabled = false; },
	toggleEnabled: function() { this.enabled = !this.enabled; }
};

$.fn.tipsy = function(options) {

	if (options === true) {
		return this.data('tipsy');
	} else if (typeof options == 'string') {
		return this.data('tipsy')[options]();
	}

	options = $.extend({}, $.fn.tipsy.defaults, options);

	function get(ele) {
		var tipsy = $.data(ele, 'tipsy');
		if (!tipsy) {
			tipsy = new Tipsy(ele, $.fn.tipsy.elementOptions(ele, options));
			$.data(ele, 'tipsy', tipsy);
		}
		return tipsy;
	}

	function enter() {
		var tipsy = get(this);
		tipsy.hoverState = 'in';
		if (options.delayIn == 0) {
			tipsy.show();
		} else {
			setTimeout(function() { if (tipsy.hoverState == 'in') tipsy.show(); }, options.delayIn);
		}
	};

	function leave() {
		var tipsy = get(this);
		tipsy.hoverState = 'out';
		if (options.delayOut == 0) {
			tipsy.hide();
		} else {
			setTimeout(function() { if (tipsy.hoverState == 'out') tipsy.hide(); }, options.delayOut);
		}
	};

	if (!options.live) this.each(function() { get(this); });

	if (options.trigger != 'manual') {
		var binder   = options.live ? 'live' : 'bind',
		eventIn  = options.trigger == 'hover' ? 'mouseenter' : 'focus',
		eventOut = options.trigger == 'hover' ? 'mouseleave' : 'blur';
		this[binder](eventIn, enter)[binder](eventOut, leave);
	}

	return this;

};

$.fn.tipsy.defaults = {
	delayIn: 0,
	delayOut: 0,
	fade: true, /* Modified by SP */
	fallback: '',
	gravity: 'n',
	html: false,
	live: false,
	offset: 0,
	opacity: 0.8,
	title: 'title',
	trigger: 'hover'
};

// Overwrite this method to provide options on a per-element basis.
// For example, you could store the gravity in a 'tipsy-gravity' attribute:
// return $.extend({}, options, {gravity: $(ele).attr('tipsy-gravity') || 'n' });
// (remember - do not modify 'options' in place!)
$.fn.tipsy.elementOptions = function(ele, options) {
	return $.metadata ? $.extend({}, options, $(ele).metadata()) : options;
};

$.fn.tipsy.autoNS = function() {
	return $(this).offset().top > ($(document).scrollTop() + $(window).height() / 2) ? 's' : 'n';
};

$.fn.tipsy.autoWE = function() {
	return $(this).offset().left > ($(document).scrollLeft() + $(window).width() / 2) ? 'e' : 'w';
};

})(jQuery);