/*
 * jQuery Impromptu
 * By: Trent Richardson [http://trentrichardson.com]
 * Version 3.1
 * Last Modified: 3/30/2010
 * 
 * Copyright 2010 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);
        options.classes = $.trim(options.classes);
        if (options.classes != '')options.classes = ' ' + options.classes;
        var msgbox = '<div class="' + options.prefix + 'box' + options.classes + '" id="' + options.prefix + 'box">';
        if (options.useiframe && (($('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) {
                if (typeof v == 'object')states += '<button name="' + options.prefix + '_' + statename + '_button' + v.title.replace(/[^a-z0-9]+/gi, '') + '" id="' + options.prefix + '_' + statename + '_button' + v.title.replace(/[^a-z0-9]+/gi, '') + '" value="' + v.value + '">' + v.title + '</button>'; else 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()];
                if (clicked == undefined) {
                    for (var i in stateobj.buttons)if (stateobj.buttons[i].title == $(this).text())clicked = stateobj.buttons[i].value;
                }
                if (typeof clicked == 'object')clicked = clicked.value;
                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 || typeof forminputs[obj.name] == 'object') {
                        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) {
                fadeClicked();
            }
            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',classes:'',buttons:{Ok:true},loaded:function() {
    },submit:function() {
        return true;
    },callback:function() {
    },opacity:0.6,zIndex:999,overlayspeed:'slow',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, callback) {
        $('.' + $.prompt.currentPrefix + '_state').slideUp('slow');
        $('#' + $.prompt.currentPrefix + '_state_' + state).slideDown('slow', function() {
            $(this).find('.' + $.prompt.currentPrefix + 'defaultbutton').focus();
            if (typeof callback == 'function')callback();
        });
    };
    $.prompt.nextState = function(callback) {
        var $next = $('.' + $.prompt.currentPrefix + '_state:visible').next();
        $('.' + $.prompt.currentPrefix + '_state').slideUp('slow');
        $next.slideDown('slow', function() {
            $next.find('.' + $.prompt.currentPrefix + 'defaultbutton').focus();
            if (typeof callback == 'function')callback();
        });
    };
    $.prompt.prevState = function(callback) {
        var $next = $('.' + $.prompt.currentPrefix + '_state:visible').prev();
        $('.' + $.prompt.currentPrefix + '_state').slideUp('slow');
        $next.slideDown('slow', function() {
            $next.find('.' + $.prompt.currentPrefix + 'defaultbutton').focus();
            if (typeof callback == 'function')callback();
        });
    };
    $.prompt.close = function() {
        $('#' + $.prompt.currentPrefix + 'box').fadeOut('fast', function() {
            $(this).remove();
        });
    };
    $.fn.prompt = function(options) {
        if (options == undefined)options = {};
        if (options.withDataAndEvents == undefined)options.withDataAndEvents = false;
        $.prompt($(this).clone(options.withDataAndEvents).html(), options);
    }
})(jQuery);