(function($)
{
	// Private
	var dialog_array = new Object();
	var message_dialog = 'dialogutils-message-dialog';
	var confirm_dialog = 'dialogutils-confirm-dialog';
	var confirm_twice_dialog = 'dialogutils-confirm-twice-dialog';
	
	// Public

	jQuery.dialogutils = {
	
		create_dialog: function(name, options)
		{
			if (dialog_array[name] != undefined)
				return false;
				
			if ($('#'+name).length > 0)
			{
				alert('Already an item with the same id, can\'t create dialog');
				return false;
			}
		
			var buttons = new Object();
			buttons[$.dialogutils.texts.ok_button] = function() {
				dialog_array[$(this).attr('id')].result = true;
				$(this).dialog('close');
			};
			var dialog_options = $.extend({
				buttons: buttons,
				open: function(event, ui) {
					$('button:contains("'+$.dialogutils.texts.ok_button+'")',
						$(this).parent()).addClass('confirm_button');
				}
			}, $.dialogutils.dialog_defaults, options);
			
			$('body').append($('<div id="'+name+'" class="dialog"></div>'))
			
			var dialog = new Object();
			dialog.dialog = $('#'+name);
			dialog.callback = false;
			dialog.data = undefined;
			dialog.result = undefined;
			
			dialog_array[name] = dialog;
			$(dialog.dialog).dialog(dialog_options);
			
			return dialog.dialog;
		},
		
		create_confirm_dialog: function(name, confirm_text, options, cancel_text)
		{
			if (!cancel_text)
				cancel_text = $.dialogutils.texts.cancel_button;
		
			var buttons = new Object();
			buttons[confirm_text] = function() {
				dialog_array[$(this).attr('id')].result = true;
				$(this).dialog('close');
			};
			buttons[cancel_text] = function() {
				dialog_array[$(this).attr('id')].result = false;
				$(this).dialog('close');
			};
			
			var dialog_options = $.extend({
				buttons: buttons,
				open: function(event, ui) {
					$('button:contains("'+confirm_text+'")', $(this).parent()).addClass('confirm_button');
					$('button:contains("'+cancel_text+'")',
						$(this).parent()).addClass('cancel_button');
				}
			}, $.dialogutils.confirm_defaults, options);
			
			$.dialogutils.create_dialog(name, dialog_options);
		},
		
		show_dialog: function(name, title, message, callback, data)
		{
			if (typeof(name) != 'string')
				name = $(name).attr('id');
			
			var dialog = dialog_array[name];
			if (dialog != undefined)
			{
				$(dialog.dialog).dialog('option', 'title', title);
				$(dialog.dialog).html(message);
				dialog.callback = callback;
				dialog.data = data;
				dialog.result = undefined;
				$(dialog.dialog).dialog('open');
				$(dialog.dialog).dialog('moveToTop');
			}
		},
		
		close_dialog: function(name)
		{
			var dialog = dialog_array[name];
			if (dialog != undefined)
				$(dialog.dialog).dialog('close');
		},
		
		remove_dialog: function(name)
		{
			if (name == message_dialog || name == confirm_dialog || name == confirm_twice_dialog)
				return false;
		
			var dialog = dialog_array[name];
			if (dialog != undefined)
			{
				$(dialog.dialog).dialog('destroy');
				$(dialog.dialog).remove();
				delete dialog_array[name];
				return true;
			}
			
			return false;
		},
		
		message_dialog: function(title, message, callback, data)
		{
			if (dialog_array[message_dialog] == undefined)
				$.dialogutils.create_dialog(message_dialog);
			
			$.dialogutils.show_dialog(message_dialog, title, message, callback, data);
		},
		
		setup_message_dialog: function()
		{
			if (dialog_array[message_dialog] == undefined)
				$.dialogutils.create_dialog(message_dialog);
		},
		
		confirm_dialog: function(title, message, callback, data)
		{
			if (dialog_array[confirm_dialog] == undefined)
			{
				$.dialogutils.create_confirm_dialog(confirm_dialog,
					$.dialogutils.texts.yes_button);
			}
			
			var final_message = '<span class="confirm_msg">'+ $.dialogutils.texts.confirm +
				' <span class="msg">' + message + '</span>?</span>';
			$.dialogutils.show_dialog(confirm_dialog, title, final_message, callback, data);
		},
		
		setup_confirm_dialog: function()
		{
			if (dialog_array[confirm_dialog] == undefined)
			{
				$.dialogutils.create_confirm_dialog(confirm_dialog,
					$.dialogutils.texts.yes_button);
			}
		},
		
		set_dialog_result: function(name, result)
		{
			var dialog = dialog_array[name];
			if (dialog != undefined)
				dialog.result = result;
		},
		
		confirm_twice_dialog: function(title, message, callback, data)
		{
			if (dialog_array[confirm_twice_dialog] == undefined)
			{
				var buttons = new Object();
				buttons[$.dialogutils.texts.yes_button] = function(event, ui) {
					if ($('.confirmed_once', this).length > 0)
					{
						dialog_array[$(this).attr('id')].result = true;
						$(this).dialog('close');
					}
					else
					{
						var message = $('.msg', $(this)).html();
						$('.confirm_msg', $(this)).fadeOut('fast', function()
						{
							$(this).html($.dialogutils.texts.confirm_twice +
								' <span class="msg confirmed_once">' + message + '</span>?').fadeIn();
						});
					}
				};
				buttons[$.dialogutils.texts.cancel_button] = function() {
					dialog_array[$(this).attr('id')].result = false;
					$(this).dialog('close');
				};
				
				$.dialogutils.create_confirm_dialog(confirm_twice_dialog, 
					$.dialogutils.texts.yes_button, {buttons: buttons});
			}
			
			var final_message = '<span class="confirm_msg">'+ $.dialogutils.texts.confirm +
				' <span class="msg">' + message + '</span>?</span>';
			$.dialogutils.show_dialog(confirm_twice_dialog, title, final_message, callback, data);
		},
		
		texts:
		{
			confirm: 'Are you sure you want to',
			confirm_twice: 'Are you really sure you want to',
			ok_button: 'Ok',
			yes_button: 'Yes',
			cancel_button: 'Cancel'
		},
		
		dialog_defaults:
		{
			closeOnEscape: true,
			draggable: false,
			modal: true,
			resizable: false,
			autoOpen: false,
			bgiframe: true,
			beforeclose: function(event, ui) {
				var closeDialog = true;
				var dialog = dialog_array[$(this).attr('id')];
				if (dialog.callback)
				{
					if (dialog.data != undefined)
						closeDialog = dialog.callback.apply(dialog.dialog, new Array(dialog.result, dialog.data));
					else
						closeDialog = dialog.callback.apply(dialog.dialog, new Array(dialog.result));
				}
				if (closeDialog != undefined && !closeDialog)
				{
					dialog.result = undefined;
					return false;
				}
			}
		},
		
		confirm_defaults:
		{
		
		}
	};

})(jQuery);