/*
 * jQuery Impromptu By: Trent Richardson [http://trentrichardson.com] Version
 * 2.7 Last Modified: 6/7/2009
 * 
 * Copyright 2009 Trent Richardson Dual licensed under the MIT and GPL licenses.
 * http://trentrichardson.com/Impromptu/GPL-LICENSE.txt
 * http://trentrichardson.com/Impromptu/MIT-LICENSE.txt
 * 
 */
(function($) {
	$.prompt = function(message, options) {
		options = $.extend({}, $.prompt.defaults, options);
		$.prompt.currentPrefix = options.prefix;
		var ie6 = ($.browser.msie && $.browser.version < 7);
		var $body = $(document.body);
		var $window = $(window);
		var msgbox = '<div class="' + options.prefix + 'box" id="'
				+ options.prefix + 'box">';
		if (options.useiframe && (($('object, applet').length > 0) || ie6)) {
			msgbox += '<iframe src="javascript:false;" style="display:block;position:absolute;z-index:-1;" class="'
					+ options.prefix
					+ 'fade" id="'
					+ options.prefix
					+ 'fade"></iframe>';
		} else {
			if (ie6) {
				$('select').css('visibility', 'hidden');
			}
			msgbox += '<div class="' + options.prefix + 'fade" id="'
					+ options.prefix + 'fade"></div>';
		}
		msgbox += '<div class="' + options.prefix + '" id="' + options.prefix
				+ '"><div class="' + options.prefix + 'container"><div class="';
		msgbox += options.prefix + 'close">X</div><div id="' + options.prefix
				+ 'states"></div>';
		msgbox += '</div></div></div>';
		var $jqib = $(msgbox).appendTo($body);
		var $jqi = $jqib.children('#' + options.prefix);
		var $jqif = $jqib.children('#' + options.prefix + 'fade');
		if (message.constructor == String) {
			message = {
				state0 : {
					html : message,
					buttons : options.buttons,
					focus : options.focus,
					submit : options.submit
				}
			};
		}
		var states = "";
		$.each(message, function(statename, stateobj) {
					stateobj = $.extend({}, $.prompt.defaults.state, stateobj);
					message[statename] = stateobj;
					states += '<div id="' + options.prefix + '_state_'
							+ statename + '" class="' + options.prefix
							+ '_state" style="display:none;"><div class="'
							+ options.prefix + 'message">' + stateobj.html
							+ '</div><div class="' + options.prefix
							+ 'buttons">';
					$.each(stateobj.buttons, function(k, v) {
								states += '<button name="' + options.prefix
										+ '_' + statename + '_button' + k
										+ '" id="' + options.prefix + '_'
										+ statename + '_button' + k
										+ '" value="' + v + '">' + k
										+ '</button>';
							});
					states += '</div></div>';
				});
		$jqi.find('#' + options.prefix + 'states').html(states).children('.'
				+ options.prefix + '_state:first').css('display', 'block');
		$jqi.find('.' + options.prefix + 'buttons:empty')
				.css('display', 'none');
		$.each(message, function(statename, stateobj) {
			var $state = $jqi
					.find('#' + options.prefix + '_state_' + statename);
			$state.children('.' + options.prefix + 'buttons')
					.children('button').click(function() {
						var msg = $state.children('.' + options.prefix
								+ 'message');
						var clicked = stateobj.buttons[$(this).text()];
						var forminputs = {};
						$.each(	$jqi.find('#' + options.prefix
										+ 'states :input').serializeArray(),
								function(i, obj) {
									if (forminputs[obj.name] === undefined) {
										forminputs[obj.name] = obj.value;
									} else if (typeof forminputs[obj.name] == Array) {
										forminputs[obj.name].push(obj.value);
									} else {
										forminputs[obj.name] = [
												forminputs[obj.name], obj.value];
									}
								});
						var close = stateobj.submit(clicked, msg, forminputs);
						if (close === undefined || close) {
							removePrompt(true, clicked, msg, forminputs);
						}
					});
			$state.find('.' + options.prefix + 'buttons button:eq('
					+ stateobj.focus + ')').addClass(options.prefix
					+ 'defaultbutton');
		});
		var ie6scroll = function() {
			$jqib.css({
						top : $window.scrollTop()
					});
		};
		var fadeClicked = function() {
			if (options.persistent) {
				var i = 0;
				$jqib.addClass(options.prefix + 'warning');
				var intervalid = setInterval(function() {
							$jqib.toggleClass(options.prefix + 'warning');
							if (i++ > 1) {
								clearInterval(intervalid);
								$jqib.removeClass(options.prefix + 'warning');
							}
						}, 100);
			} else {
				removePrompt();
			}
		};
		var keyPressEventHandler = function(e) {
			var key = (window.event) ? event.keyCode : e.keyCode;
			if (key == 27) {
				removePrompt();
			}
			if (key == 9) {
				var $inputels = $(':input:enabled:visible', $jqib);
				var fwd = !e.shiftKey
						&& e.target == $inputels[$inputels.length - 1];
				var back = e.shiftKey && e.target == $inputels[0];
				if (fwd || back) {
					setTimeout(function() {
								if (!$inputels)
									return;
								var el = $inputels[back === true
										? $inputels.length - 1
										: 0];
								if (el)
									el.focus();
							}, 10);
					return false;
				}
			}
		};
		var positionPrompt = function() {
			$jqib.css({
						position : (ie6) ? "absolute" : "fixed",
						height : $window.height(),
						width : "100%",
						top : (ie6) ? $window.scrollTop() : 0,
						left : 0,
						right : 0,
						bottom : 0
					});
			$jqif.css({
						position : "absolute",
						height : $window.height(),
						width : "100%",
						top : 0,
						left : 0,
						right : 0,
						bottom : 0
					});
			$jqi.css({
						position : "absolute",
						top : options.top,
						left : "50%",
						marginLeft : (($jqi.outerWidth() / 2) * -1)
					});
		};
		var stylePrompt = function() {
			$jqif.css({
						zIndex : options.zIndex,
						display : "none",
						opacity : options.opacity
					});
			$jqi.css({
						zIndex : options.zIndex + 1,
						display : "none"
					});
			$jqib.css({
						zIndex : options.zIndex
					});
		};
		var removePrompt = function(callCallback, clicked, msg, formvals) {
			$jqi.remove();
			if (ie6) {
				$body.unbind('scroll', ie6scroll);
			}
			$window.unbind('resize', positionPrompt);
			$jqif.fadeOut(options.overlayspeed, function() {
						$jqif.unbind('click', fadeClicked);
						$jqif.remove();
						if (callCallback) {
							options.callback(clicked, msg, formvals);
						}
						$jqib.unbind('keypress', keyPressEventHandler);
						$jqib.remove();
						if (ie6 && !options.useiframe) {
							$('select').css('visibility', 'visible');
						}
					});
		};
		positionPrompt();
		stylePrompt();
		if (ie6) {
			$window.scroll(ie6scroll);
		}
		$jqif.click(fadeClicked);
		$window.resize(positionPrompt);
		$jqib.bind("keydown keypress", keyPressEventHandler);
		$jqi.find('.' + options.prefix + 'close').click(removePrompt);
		$jqif.fadeIn(options.overlayspeed);
		$jqi[options.show](options.promptspeed, options.loaded);
		$jqi.find('#' + options.prefix + 'states .' + options.prefix
				+ '_state:first .' + options.prefix + 'defaultbutton').focus();
		if (options.timeout > 0)
			setTimeout($.prompt.close, options.timeout);
		return $jqib;
	};
	$.prompt.defaults = {
		prefix : 'jqi',
		buttons : {
			Ok : true
		},
		loaded : function() {
		},
		submit : function() {
			return true;
		},
		callback : function() {
		},
		opacity : 0.6,
		zIndex : 999,
		overlayspeed : 'fast',
		promptspeed : 'fast',
		show : 'fadeIn',
		focus : 0,
		useiframe : false,
		top : "15%",
		persistent : true,
		timeout : 0,
		state : {
			html : '',
			buttons : {
				Ok : true
			},
			focus : 0,
			submit : function() {
				return true;
			}
		}
	};
	$.prompt.currentPrefix = $.prompt.defaults.prefix;
	$.prompt.setDefaults = function(o) {
		$.prompt.defaults = $.extend({}, $.prompt.defaults, o);
	};
	$.prompt.setStateDefaults = function(o) {
		$.prompt.defaults.state = $.extend({}, $.prompt.defaults.state, o);
	};
	$.prompt.getStateContent = function(state) {
		return $('#' + $.prompt.currentPrefix + '_state_' + state);
	};
	$.prompt.getCurrentState = function() {
		return $('.' + $.prompt.currentPrefix + '_state:visible');
	};
	$.prompt.getCurrentStateName = function() {
		var stateid = $.prompt.getCurrentState().attr('id');
		return stateid.replace($.prompt.currentPrefix + '_state_', '');
	};
	$.prompt.goToState = function(state) {
		$('.' + $.prompt.currentPrefix + '_state').slideUp('slow');
		$('#' + $.prompt.currentPrefix + '_state_' + state).slideDown('slow',
				function() {
					$(this)
							.find('.' + $.prompt.currentPrefix
									+ 'defaultbutton').focus();
				});
	};
	$.prompt.nextState = function() {
		var $next = $('.' + $.prompt.currentPrefix + '_state:visible').next();
		$('.' + $.prompt.currentPrefix + '_state').slideUp('slow');
		$next.slideDown('slow', function() {
					$next.find('.' + $.prompt.currentPrefix + 'defaultbutton')
							.focus();
				});
	};
	$.prompt.prevState = function() {
		var $next = $('.' + $.prompt.currentPrefix + '_state:visible').prev();
		$('.' + $.prompt.currentPrefix + '_state').slideUp('slow');
		$next.slideDown('slow', function() {
					$next.find('.' + $.prompt.currentPrefix + 'defaultbutton')
							.focus();
				});
	};
	$.prompt.close = function() {
		$('#' + $.prompt.currentPrefix + 'box').fadeOut('fast', function() {
					$(this).remove();
				});
	};
})(jQuery);