/*
Stylish Select 0.4.1 - $ plugin to replace a select drop down box with a stylable unordered list
http://scottdarby.com/

Requires: jQuery 1.3 or newer

Contributions from Justin Beasley: http://www.harvest.org/ & Anatoly Ressin: http://www.artazor.lv/

Dual licensed under the MIT and GPL licenses.

*/
(function ($) {

    //add class of js to html tag
    $('html').addClass('stylish-select');

    //create cross-browser indexOf
    Array.prototype.indexOf = function (obj, start) {
        for (var i = (start || 0); i < this.length; i++) {
            if (this[i] == obj) {
                return i;
            }
        }
    }

    //utility methods
    $.fn.extend({
        getSetSSValue: function (value) {
            if (value) {
                //set value and trigger change event
                $(this).val(value).change();
                return this;
            } else {
                return $(this).find(':selected').val();
            }
        },
        //added by Justin Beasley
        resetSS: function () {
            var oldOpts = $(this).data('ssOpts');
            $this = $(this);
            $this.next().remove();
            //unbind all events and redraw
            $this.unbind().sSelect(oldOpts);
        }
    });

    $.fn.sSelect = function (options) {

        if (navigator.userAgent.match(/(Android)|(iPad)|(iPhone)|(iPod)|(mobile)|(webOS)/i)) {

            this.height('35');
            this.width('100%');
            this.parent().height('35');
            return null;
        }

        if (!navigator.userAgent.match(/(Android)|(iPad)|(iPhone)|(iPod)|(mobile)|(webOS)/i)) {

            this.hide();
            return this.each(function () {

                var defaults = {
                    defaultText: '',
                    animationSpeed: 0, //set speed of dropdown
                    ddMaxHeight: '' //set css max-height value of dropdown
                };

                //initial variables
                var opts = $.extend(defaults, options),
                $input = $(this),
                $containerDivText = $('<div class="selectedTxt"></div>'),
                $containerDiv = $('<div class="newListSelected" tabindex="0"></div>'),
                $newUl = $('<ul class="newList"></ul>'),
                itemIndex = -1,
                currentIndex = -1,
                keys = [],
                prevKey = false,
                prevented = false,
                $newLi;

                //added by Justin Beasley
                $(this).data('ssOpts', options);

                //build new list
                $containerDiv.insertAfter($input);
                $containerDivText.prependTo($containerDiv);
                $newUl.appendTo($containerDiv);
                $input.hide();

                //test for optgroup
                if ($input.children('optgroup').length == 0) {
                    $input.children().each(function (i) {
                        var option = $(this).text();
                        var key = $(this).val();

                        //add first letter of each word to array
                        keys.push(option.charAt(0).toLowerCase());
                        if ($(this).attr('selected') == true) {
                            opts.defaultText = option;
                            currentIndex = i;
                        }
                        $newUl.append($('<li><a>' + option + '</a></li>').data('key', key));

                    });
                    //cache list items object
                    $newLi = $newUl.children().children();

                } else { //optgroup
                    $input.children('optgroup').each(function () {

                        var optionTitle = $(this).attr('label'),
                        $optGroup = $('<li class="newListOptionTitle">' + optionTitle + '</li>');

                        $optGroup.appendTo($newUl);

                        var $optGroupList = $('<ul></ul>');

                        $optGroupList.appendTo($optGroup);

                        $(this).children().each(function () {
                            ++itemIndex;
                            var option = $(this).text();
                            var key = $(this).val();
                            //add first letter of each word to array
                            keys.push(option.charAt(0).toLowerCase());
                            if ($(this).attr('selected') == true) {
                                opts.defaultText = option;
                                currentIndex = itemIndex;
                            }
                            $optGroupList.append($('<li><a>' + option + '</a></li>').data('key', key));
                        })
                    });
                    //cache list items object
                    $newLi = $newUl.find('ul li a');
                }

                //get heights of new elements for use later
                var newUlHeight = $newUl.height(),
                containerHeight = $containerDiv.height(),
                newLiLength = $newLi.length;

                //check if a value is selected
                if (currentIndex != -1) {
                    navigateList(currentIndex, true);
                } else {
                    //set placeholder text
                    $containerDivText.text(opts.defaultText);
                }

                //decide if to place the new list above or below the drop-down
                function newUlPos() {
                    var containerPosY = $containerDiv.offset().top,
                    docHeight = jQuery(window).height(),
                    scrollTop = jQuery(window).scrollTop();

                    //if height of list is greater then max height, set list height to max height value
                    if (newUlHeight > parseInt(opts.ddMaxHeight)) {
                        newUlHeight = parseInt(opts.ddMaxHeight);
                    }

                    containerPosY = containerPosY - scrollTop;
                    if (containerPosY + newUlHeight >= docHeight) {
                        $newUl.css({
                            top: '-' + newUlHeight + 'px',
                            height: newUlHeight
                        });
                        $input.onTop = true;
                    } else {
                        $newUl.css({
                            top: containerHeight + 'px',
                            height: newUlHeight
                        });
                        $input.onTop = false;
                    }
                }

                //run function on page load
                newUlPos();

                //run function on browser window resize
                $(window).resize(function () {
                    newUlPos();
                });

                $(window).scroll(function () {
                    newUlPos();
                });

                //positioning
                function positionFix() {
                    $containerDiv.css('position', 'relative');
                }

                function positionHideFix() {
                    $containerDiv.css('position', 'relative');
                }

                $containerDivText.click(function (event) {

                    event.stopPropagation();

                    //hide all menus apart from this one
                    $('.newList').not($(this).next()).hide().parent().removeClass('newListSelFocus');

                    //z-index fix - VPH
                    $('.newList').parent().css("z-index", "1");
                    ($(this).next()).parent().css("z-index", "9999");


                    //show/hide this menu
                    $newUl.toggle();
                    positionFix();
                    //scroll list to selected item
                    $newLi.eq(currentIndex).focus();


                });

                $newLi.click(function (e) {

                    var $clickedLi = $(e.target);

                    //update counter
                    currentIndex = $newLi.index($clickedLi);

                    //remove all hilites, then add hilite to selected item
                    prevented = true;
                    navigateList(currentIndex);
                    $newUl.hide();
                    $containerDiv.css('position', 'relative'); //ie

                });

                $newLi.hover(
                    function (e) {
                        var $hoveredLi = $(e.target);
                        $hoveredLi.addClass('newListHover');
                    },
                    function (e) {
                        var $hoveredLi = $(e.target);
                        $hoveredLi.removeClass('newListHover');
                    }
                    );

                function navigateList(currentIndex, init) {
                    $newLi.removeClass('hiLite')
                    .eq(currentIndex)
                    .addClass('hiLite');

                    if ($newUl.is(':visible')) {
                        $newLi.eq(currentIndex).focus();
                    }

                    var text = $newLi.eq(currentIndex).text();
                    var val = $newLi.eq(currentIndex).parent().data('key');

                    //page load
                    if (init == true) {
                        $input.val(val);
                        $containerDivText.text(text);
                        return false;
                    }

                    $input.val(val)
                    $input.change();
                    //if (!$.browser.msie) $input.change();
                    $containerDivText.text(text);
                };

                $input.change(function (event) {
                    $targetInput = $(event.target);
                    //stop change function from firing
                    if (prevented == true) {
                        prevented = false;
                        return false;
                    }
                    $currentOpt = $targetInput.find(':selected');

                    //currentIndex = $targetInput.find('option').index($currentOpt);
                    currentIndex = $targetInput.find('option').index($currentOpt);


                    navigateList(currentIndex, true);
                }
                );

                //handle up and down keys
                function keyPress(element) {
                    //when keys are pressed
                    element.onkeydown = function (e) {
                        var keycode;
                        if (e == null) { //ie
                            keycode = event.keyCode;
                        } else { //everything else
                            keycode = e.which;
                        }

                        //prevent change function from firing
                        prevented = true;

                        switch (keycode) {
                            case 40: //down
                            case 39: //right
                                incrementList();
                                return false;
                                break;
                            case 38: //up
                            case 37: //left
                                decrementList();
                                return false;
                                break;
                            case 33: //page up
                            case 36: //home
                                gotoFirst();
                                return false;
                                break;
                            case 34: //page down
                            case 35: //end
                                gotoLast();
                                return false;
                                break;
                            case 13:
                            case 27:
                                $newUl.hide();
                                positionHideFix();
                                return false;
                                break;
                        }

                        //check for keyboard shortcuts
                        keyPressed = String.fromCharCode(keycode).toLowerCase();

                        var currentKeyIndex = keys.indexOf(keyPressed);

                        if (typeof currentKeyIndex != 'undefined') { //if key code found in array
                            ++currentIndex;
                            currentIndex = keys.indexOf(keyPressed, currentIndex); //search array from current index
                            if (currentIndex == -1 || currentIndex == null || prevKey != keyPressed) currentIndex = keys.indexOf(keyPressed); //if no entry was found or new key pressed search from start of array


                            navigateList(currentIndex);
                            //store last key pressed
                            prevKey = keyPressed;
                            return false;
                        }
                    }
                }

                function incrementList() {
                    if (currentIndex < (newLiLength - 1)) {
                        ++currentIndex;
                        navigateList(currentIndex);
                    }
                }

                function decrementList() {
                    if (currentIndex > 0) {
                        --currentIndex;
                        navigateList(currentIndex);
                    }
                }

                function gotoFirst() {
                    currentIndex = 0;
                    navigateList(currentIndex);
                }

                function gotoLast() {
                    currentIndex = newLiLength - 1;
                    navigateList(currentIndex);
                }

                $containerDiv.click(function () {
                    keyPress(this);
                });

                $containerDiv.focus(function () {
                    $(this).addClass('newListSelFocus');
                    keyPress(this);
                });

                $containerDiv.blur(function () {
                    $(this).removeClass('newListSelFocus');
                });

                //hide list on blur
                $('body').click(function () {
                    $containerDiv.removeClass('newListSelFocus');
                    $newUl.hide();
                    positionHideFix();
                });

                //add classes on hover
                $containerDivText.hover(function (e) {
                    var $hoveredTxt = $(e.target);
                    $hoveredTxt.parent().addClass('newListSelHover');
                },
                function (e) {
                    var $hoveredTxt = $(e.target);
                    $hoveredTxt.parent().removeClass('newListSelHover');
                }
                );

                //reset left property and hide
                $newUl.css('left', '0').hide();

            });
        }
    };

})(jQuery);