/**
 * @class dialogelfinder - open elFinder in dialog window
 *
 * @param  Object  elFinder options with dialog options
 * @example
 * $(selector).dialogelfinder({
 *     // some elfinder options
 *     title          : 'My files', // dialog title, default = "Files"
 *     width          : 850,        // dialog width, default 840
 *     autoOpen       : false,      // if false - dialog will not be opened after init, default = true
 *     destroyOnClose : true        // destroy elFinder on close dialog, default = false
 * })
 * @author Dmitry (dio) Levashov
 **/
$.fn.dialogelfinder = function(opts) {
	"use strict";
	var position = 'elfinderPosition',
		destroy  = 'elfinderDestroyOnClose',
		node;
	
	this.not('.elfinder').each(function() {

		
		var doc     = $(document),
			toolbar = $('<div class="ui-widget-header dialogelfinder-drag ui-corner-top">'+(opts.title || 'Files')+'</div>'),
			button  = $('<a href="#" class="dialogelfinder-drag-close ui-corner-all"><span class="ui-icon ui-icon-closethick"> </span></a>')
				.appendTo(toolbar)
				.on('click', function(e) {
					e.preventDefault();
					
					node.dialogelfinder('close');
				}),
			node    = $(this).addClass('dialogelfinder')
				.css('position', 'absolute')
				.hide()
				.appendTo('body')
				.draggable({
					handle : '.dialogelfinder-drag',
					containment : 'window',
					stop : function() {
						node.trigger('resize');
						elfinder.trigger('resize');
					}
				})
				.elfinder(opts)
				.prepend(toolbar),
			elfinder = node.elfinder('instance');
		
		
		node.width(parseInt(node.width()) || 840) // fix width if set to "auto"
			.data(destroy, !!opts.destroyOnClose)
			.find('.elfinder-toolbar').removeClass('ui-corner-top');
		
		opts.position && node.data(position, opts.position);
		
		opts.autoOpen !== false && $(this).dialogelfinder('open');

	});
	
	if (opts == 'open') {
		node = $(this),
			pos  = node.data(position) || {
				top  : parseInt($(document).scrollTop() + ($(window).height() < node.height() ? 2 : ($(window).height() - node.height())/2)),
				left : parseInt($(document).scrollLeft() + ($(window).width() < node.width()  ? 2 : ($(window).width()  - node.width())/2))
			};

		if (node.is(':hidden')) {
			node.addClass('ui-front').css(pos).show().trigger('resize');

			setTimeout(function() {
				// fix resize icon position and make elfinder active
				node.trigger('resize').trigger('mousedown');
			}, 200);
		}
	} else if (opts == 'close') {
		node = $(this).removeClass('ui-front');
			
		if (node.is(':visible')) {
			!!node.data(destroy)
				? node.elfinder('destroy').remove()
				: node.elfinder('close');
		}
	} else if (opts == 'instance') {
		return $(this).getElFinder();
	}

	return this;
};
