/**
 * jQuery Simple Dialog Plugin http://code.google.com/p/jquery-simpledialog/
 * 
 * Copyright (c) 2009 Yusuke Horie
 * 
 * Released under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * Since : 0.01 - 07/06/2009 Version: 0.11 - 08/08/2009
 */
(function(jQuery) {
	var _doc = null, _win = null, _docHeight = 0, _winHeight = 0, _winWidth = 0, _t = null, _event = null, _target = null, _escapedContent = '', _title = '', _caption = '', _container = null, _content = null;
	jQuery.fn.simpleDialog = function(options) {
		var opts = jQuery.extend( {}, jQuery.fn.simpleDialog.defaults, options);
		return this.each(function(i, e) {
			var $this = jQuery(e);
			var triggerEvent = ($this.is('form')) ? 'submit' : 'click';
			$this.bind(triggerEvent + '.simpledialog', function(event) {
				event.preventDefault();
				_t = this;
				_t.opts = opts;
				_event = event;
				_initialize();
				_prepare();
				var $t = jQuery(this);
				if (_t.opts.title != '')
					_title = _t.opts.title;
				if ($t.is('a')) {
					if (_t.opts.useTitleAttr) {
						var title = $t.attr('title');
						if (typeof title != 'undefined' && title != '')
							_title = title
					}
					var href = $t.attr('href');
					if (href.match(/^#/)) {
						var c = jQuery('#' + $t.attr('rel'));
						if (c.length == 0)
							return false;
						_target = c;
						_escapedContent = _target.clone().html();
						_target.empty();
						_show(_escapedContent)
					} else if ($t.find('img').length > 0) {
						if (_t.opts.showCaption)
							_caption = $t.find('img').attr('title');
						_load(href)
					} else {
						_request(href, {})
					}
				} else if ($t.is(':submit', ':button')) {
					var f = $t.parents('form');
					_request(f.attr('action'), f.serialize(), f.attr('method'))
				} else if ($t.is('form')) {
					_request($t.attr('action'), $t.serialize(), $t
							.attr('method'))
				} else {
					jQuery.simpleDialog.close(event)
				}
				return false
			})
		})
	};
	jQuery.fn.simpleDialog.defaults = {
		title : '',
		useTitleAttr : true,
		containerId : 'sd_container',
		containerClass : 'sd_container',
		overlayId : 'sd_overlay',
		overlayClass : 'sd_overlay',
		loadingClass : 'sd_loading',
		closeLabelClass : 'sd_closelabel',
		showCloseLabel : true,
		closeLabel : 'close ×',
		opacity : 0.6,
		duration : 400,
		easing : 'linear',
		zIndex : 1000,
		width : null,
		height : null,
		showCaption : true,
		open : null,
		close : null,
		closeSelector : '.close'
	};
	jQuery.simpleDialog = {
		close : function(event) {
			if (jQuery.isFunction(_t.opts.close))
				_t.opts.close.apply(this, [
						(typeof event == 'undefined') ? null : event, _t ]);
			if (_container != null)
				_container.remove();
			if (_target != null)
				_target.html(_escapedContent);
			jQuery('#' + _t.opts.overlayId).remove();
			return false
		}
	};
	var _initialize = function() {
		_doc = jQuery(document);
		_win = jQuery(window);
		_docHeight = _doc.height();
		_winHeight = _win.height();
		_winWidth = _win.width();
		_title = '';
		_caption = ''
	};
	var _show = function(content) {
		var body = '';
		if (_title != '')
			body += '<div class="sd_header">' + _title + '</div>';
		body += '<div class="sd_content">' + content + '</div>';
		if (_caption != '' && typeof _caption != 'undefined')
			body += ' <div class="sd_footer">' + _caption + '</div>';
		var tmp = jQuery('<div />').addClass(_t.opts.containerClass).hide()
				.css( {
					position : 'absolute',
					height : 'auto'
				}).html(body).appendTo(document.body);
		var w = (_t.opts.width) ? parseInt(_t.opts.width) : tmp.width();
		var h = (_t.opts.height) ? parseInt(_t.opts.height) : tmp.height();
		tmp.remove();
		var pos = _center(w, h);
		_container.removeClass(_t.opts.loadingClass).animate(
				{
					width : w + 'px',
					height : h + 'px',
					left : pos[0] + 'px',
					top : pos[1] + 'px'
				},
				_t.opts.duration,
				_t.opts.easing,
				function() {
					_container.html(body).find(_t.opts.closeSelector).bind(
							'click.simpledialog', jQuery.simpleDialog.close);
					if (_t.opts.showCloseLabel) {
						var sc = '<div id="sd_closelabel" class="'
								+ _t.opts.closeLabelClass + '">'
								+ '<a href="#">' + _t.opts.closeLabel
								+ '</a></div>';
						_container.hover(function() {
							jQuery(this).append(sc);
							var scObj = jQuery('#sd_closelabel');
							scObj.css( {
								position : 'absolute',
								top : 0,
								left : (w - scObj.width()) + 'px',
								opacity : 0.85
							}).find('a').click(jQuery.simpleDialog.close)
						}, function() {
							jQuery('#sd_closelabel').remove()
						})
					}
					if (jQuery.isFunction(_t.opts.open))
						_t.opts.open.apply(_container, [ _event, _t ])
				})
	};
	var _request = function(url, data, method) {
		jQuery.ajax( {
			type : (typeof method == 'undefined') ? 'GET' : method,
			url : url,
			data : data,
			dataType : 'html',
			success : _show
		})
	};
	var _load = function(url) {
		jQuery(document.body)
				.append(
						'<div id="sd_tmp_image" style="display:none;"><img src="' + url + '" alt="" /></div>');
		var tmp = jQuery('#sd_tmp_image');
		tmp.find('img').load(function() {
			var h = tmp.html();
			tmp.remove();
			_show(h)
		}).error(function(e) {
			jQuery.simpleDialog.close(e);
			tmp.remove()
		})
	};
	var _prepare = function() {
		jQuery('<div />').attr('id', _t.opts.overlayId).addClass(
				_t.opts.overlayClass).css( {
			position : 'absolute',
			width : _winWidth,
			height : _docHeight,
			opacity : _t.opts.opacity,
			zIndex : _t.opts.zIndex
		}).bind('click.simpledialog', jQuery.simpleDialog.close).appendTo(
				document.body);
		_container = jQuery('<div />').attr('id', _t.opts.containerId)
				.addClass(_t.opts.loadingClass)
				.addClass(_t.opts.containerClass).hide()
				.appendTo(document.body);
		var w = _container.width();
		var h = _container.height();
		var pos = _center(w, h);
		_container.css( {
			position : 'absolute',
			left : pos[0] + 'px',
			top : pos[1] + 'px',
			width : w + 'px',
			height : h + 'px',
			zIndex : _t.opts.zIndex + 1000
		}).show()
	};
	var _center = function(w, h) {
		return [
				(_docHeight > _winHeight) ? _winWidth / 2 - w / 2 - 18
						: _winWidth / 2 - w / 2,
				_doc.scrollTop() + _winHeight / 2 - h / 2 ]
	}
})(jQuery);