/*

lineSeparator = az ajax php által visszaküldött sorválasztót jelenti (aléapként \n)



/*
 * jQuery autocomplete plugin
 * Version 2.0.0  (2008-03-22)
 * @requires jQuery v1.1.1+
 *
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Dylan Verheul
 * http://www.dyve.net/jquery
 *
 */
(function($) {
        /**
         * The autocompleter object
         */
        $.autocomplete = function(input, options) {

		var oldValue = null;

                // Create a link to self
                var me = this;
                // Create jQuery object for input element
                var $input = $(input).attr("autocomplete", "off");
                // Apply inputClass if necessary
                if (options.inputClass) {
                        $input.addClass(options.inputClass);
                }

                // Create results
                var results = document.createElement("div");

                // Create jQuery object for results
                // var $results = $(results);
                var $results = $(results).hide().addClass(options.resultsClass).css("position", "absolute");
                if( options.width > 0 ) {
                        $results.css("width", options.width);
                }

                // Add to body element
                $("body").append(results);

                input.autocompleter = me;

                var timeout = null;
                var prev = "";
                var active = -1;
                var cache = {};
                var keyb = false;
                var hasFocus = false;
                var lastKeyPressCode = null;
                var mouseDownOnSelect = false;
                var hidingResults = false;

                // flush cache
                function flushCache(){
                        cache = {};
                        cache.data = {};
                        cache.length = 0;
                };

                // flush cache
                flushCache();

                // if there is a data array supplied
                if( options.data != null ){
                        var sFirstChar = "", stMatchSets = {}, row = [];

                        // no url was specified, we need to adjust the cache length to make sure it fits the local data store
                        if (typeof options.url != "string") {
                                options.cacheLength = 1;
                        }

                        // loop through the array and create a lookup structure
                        for( var i=0; i < options.data.length; i++ ){
                                // if row is a string, make an array otherwise just reference the array
                                row = ((typeof options.data[i] == "string") ? [options.data[i]] : options.data[i]);

                                // if the length is zero, don't add to list
                                if( row[0].length > 0 ){
                                        // get the first character
                                        sFirstChar = row[0].substring(0, 1).toLowerCase();
                                        // if no lookup array for this character exists, look it up now
                                        if( !stMatchSets[sFirstChar] ) stMatchSets[sFirstChar] = [];
                                        // if the match is a string
                                        stMatchSets[sFirstChar].push(row);
                                }
                        }

                        // add the data items to the cache
                        for (var k in stMatchSets) {
                                // increase the cache size
                                options.cacheLength++;
                                // add to the cache
                                addToCache(k, stMatchSets[k]);
                        }
                }

                $input
                .keydown(function(e) {
                        // track last key pressed
                        lastKeyPressCode = e.keyCode;
                        switch(e.keyCode) {
                                case 38: // up
                                        e.preventDefault();
                                        moveSelect(-1);
                                        break;
                                case 40: // down
                                        e.preventDefault();
                                        moveSelect(1);
                                        break;
                                case 9:  // tab
//		                        $input.hideResultsNow();
//                                        $input.blur();
$("li").removeClass("ac_over");
                                        break;
                                case 13: // return
                                        if( selectCurrent() ){
                                                // make sure to blur off the current field
                                                $input.blur();
                                                e.preventDefault();
                                                // give focus with a small timeout (weird behaviour in FF)
                                                setTimeout(function() { $input.focus() }, 10);
                                        }
                                        break;
                                default:
                                        active = -1;
                                        if (timeout) clearTimeout(timeout);
                                        timeout = setTimeout(onChange, options.delay);
                                        break;
                        }
                })
                .focus(function(){
                        // track whether the field has focus, we shouldn't process any results if the field no longer has focus
                        hasFocus = true;
                })
                .blur(function() {
                        // track whether the field has focus
                        hasFocus = false;
                        if (!mouseDownOnSelect) {
                                hideResults();
                        }
                });

                hideResultsNow();

                function onChange() {
                        // ignore if the following keys are pressed: [del] [shift] [capslock]
                        if( lastKeyPressCode == 46 || (lastKeyPressCode > 8 && lastKeyPressCode < 32) ) return $results.hide();
                        var v = $input.val();
                        if (v == prev) return;
                        prev = v;

$input.oldValue = v.split("\n");
v = $input.oldValue[ $input.oldValue.length-1 ];
$input.oldValue.splice($input.oldValue.length-1,1);
// alert($input.oldValue.length)
// alert($input.oldValue)


                        if (v.length >= options.minChars) {
                                $input.addClass(options.loadingClass);
                                requestData(v);
                        } else {
                                $input.removeClass(options.loadingClass);
                                $results.hide();
                        }
                };

                function moveSelect(step) {

                        var lis = $("li", results);
                        if (!lis) return;

                        active += step;

                        if (active < 0) {
                                active = 0;
                        } else if (active >= lis.size()) {
                                active = lis.size() - 1;
                        }

                        lis.removeClass("ac_over");

                        $(lis[active]).addClass("ac_over");

                        // Weird behaviour in IE
                        // if (lis[active] && lis[active].scrollIntoView) {
                        //      lis[active].scrollIntoView(false);
                        // }

                };

                function selectCurrent() {
                        var li = $("li.ac_over", results)[0];
                        if (!li) {
                                var $li = $("li", results);
                                if (options.selectOnly) {
                                        if ($li.length == 1) li = $li[0];
                                } else if (options.selectFirst) {
                                        li = $li[0];
                                }
                        }
                        if (li) {
                                selectItem(li);
                                return true;
                        } else {
                                return false;
                        }
                };

                function selectItem(li) {
                        if (!li) {
                                li = document.createElement("li");
                                li.extra = [];
                                li.selectValue = "";
                        }
                        var v = $.trim(li.selectValue ? li.selectValue : li.innerHTML);
                        input.lastSelected = v;
// alert($input.oldValue);
var vv = $input.oldValue.join("\n");
if (vv!="") vv += "\n";
v = vv + v;
                        prev = v;
                        $results.html("");
                        $input.val(v);
                        hideResultsNow();
                        if (options.onItemSelect) {
                                setTimeout(function() { options.onItemSelect(li) }, 1);
                        }
                };


                // selects a portion of the input string
                function createSelection(start, end){
                        // get a reference to the input element
                        var field = $input.get(0);
                        if( field.createTextRange ){
                                var selRange = field.createTextRange();
                                selRange.collapse(true);
                                selRange.moveStart("character", start);
                                selRange.moveEnd("character", end);
                                selRange.select();
                        } else if( field.setSelectionRange ){
                                field.setSelectionRange(start, end);
                        } else {
                                if( field.selectionStart ){
                                        field.selectionStart = start;
                                        field.selectionEnd = end;
                                }
                        }
                        field.focus();
                };

                // fills in the input box w/the first match (assumed to be the best match)
                function autoFill(sValue){
                        // if the last user key pressed was backspace, don't autofill
                        if( lastKeyPressCode != 8 ){
                                // fill in the value (keep the case the user has typed)
                                $input.val($input.val() + sValue.substring(prev.length));
                                // select the portion of the value not typed by the user (so the next character will erase)
                                createSelection(prev.length, sValue.length);
                        }
                };

                function showResults() {
                        // get the position of the input field right now (in case the DOM is shifted)
                        var pos = findPos(input);
                        // either use the specified width, or autocalculate based on form element
                        var iWidth = (options.width > 0) ? options.width : $input.width();
                        // reposition
                        $results.css({
                                width: parseInt(iWidth) + "px",
                                top: (pos.y + input.offsetHeight) + "px",
                                left: pos.x + "px"
                        }).show();
                };

                function hideResults() {
                        if (timeout) clearTimeout(timeout);
                        timeout = setTimeout(hideResultsNow, 200);
                };

                function hideResultsNow() {
                        if (hidingResults) {
                                return;
                        }
                        hidingResults = true;

                        if (timeout) {
                                clearTimeout(timeout);
                        }

                        var v = $input.removeClass(options.loadingClass).val();

                        if ($results.is(":visible")) {
                                $results.hide();
                        }

                        if (options.mustMatch) {
                                if (!input.lastSelected || input.lastSelected != v) {
                                        selectItem(null);
                                }
                        }

                        hidingResults = false;
                };

                function receiveData(q, data) {
                        if (data) {
                                $input.removeClass(options.loadingClass);
                                results.innerHTML = "";

                                // if the field no longer has focus or if there are no matches, do not display the drop down
                                if( !hasFocus || data.length == 0 ) return hideResultsNow();

                                if ($.browser.msie) {
                                        // we put a styled iframe behind the calendar so HTML SELECT elements don't show through
                                        $results.append(document.createElement('iframe'));
                                }
                                results.appendChild(dataToDom(data));
                                // autofill in the complete box w/the first match as long as the user hasn't entered in more data
                                if( options.autoFill && ($input.val().toLowerCase() == q.toLowerCase()) ) autoFill(data[0][0]);
                                showResults();
                        } else {
                                hideResultsNow();
                        }
                };

                function parseData(data) {
                        if (!data) return null;
                        var parsed = [];
                        var rows = data.split(options.lineSeparator);
                        for (var i=0; i < rows.length; i++) {
                                var row = $.trim(rows[i]);
                                if (row) {
                                        parsed[parsed.length] = row.split(options.cellSeparator);
                                }
                        }
                        return parsed;
                };

                function dataToDom(data) {
                        var ul = document.createElement("ul");
                        var num = data.length;

                        // limited results to a max number
                        if( (options.maxItemsToShow > 0) && (options.maxItemsToShow < num) ) num = options.maxItemsToShow;

                        for (var i=0; i < num; i++) {
                                var row = data[i];
                                if (!row) continue;
                                var li = document.createElement("li");
                                if (options.formatItem) {
                                        li.innerHTML = options.formatItem(row, i, num);
                                        li.selectValue = row[0];
                                } else {
                                        li.innerHTML = row[0];
                                        li.selectValue = row[0];
                                }
                                var extra = null;
                                if (row.length > 1) {
                                        extra = [];
                                        for (var j=1; j < row.length; j++) {
                                                extra[extra.length] = row[j];
                                        }
                                }
                                li.extra = extra;
                                ul.appendChild(li);

                                $(li).hover(
                                        function() {
                                                var $this = $(this);
                                                active = $("li", ul).removeClass("ac_over").index($this[0]);
                                                $this.addClass("ac_over");
                                        },
                                        function() {
                                                $(this).removeClass("ac_over");
                                        }
                                ).click(function(e) {
                                        e.preventDefault();
                                        e.stopPropagation();
                                        selectItem(this)
                                });

                        }
                        $(ul).mousedown(function() {
                                mouseDownOnSelect = true;
                        }).mouseup(function() {
                                mouseDownOnSelect = false;
                        });
                        return ul;
                };

                function requestData(q) {
                        if (!options.matchCase) q = q.toLowerCase();
                        var data = options.cacheLength ? loadFromCache(q) : null;
                        // recieve the cached data
                        if (data) {
                                receiveData(q, data);
                        // if an AJAX url has been supplied, try loading the data now
                        } else if( (typeof options.url == "string") && (options.url.length > 0) ){
                                $.get(makeUrl(q), function(data) {
                                        data = parseData(data);
                                        addToCache(q, data);
                                        receiveData(q, data);
                                });
                        // if there's been no data found, remove the loading class
                        } else {
                                $input.removeClass(options.loadingClass);
                        }
                };

                function makeUrl(q) {
                        var sep = options.url.indexOf('?') == -1 ? '?' : '&';
                        var url = options.url + sep + "q=" + encodeURI(q);
                        for (var i in options.extraParams) {
                                url += "&" + i + "=" + encodeURI(options.extraParams[i]);
                        }
                        return url;
                };

                function loadFromCache(q) {
                        if (!q) return null;
                        if (cache.data[q]) return cache.data[q];
                        if (options.matchSubset) {
                                for (var i = q.length - 1; i >= options.minChars; i--) {
                                        var qs = q.substr(0, i);
                                        var c = cache.data[qs];
                                        if (c) {
                                                var csub = [];
                                                for (var j = 0; j < c.length; j++) {
                                                        var x = c[j];
                                                        var x0 = x[0];
                                                        if (matchSubset(x0, q)) {
                                                                csub[csub.length] = x;
                                                        }
                                                }
                                                return csub;
                                        }
                                }
                        }
                        return null;
                };


                function matchSubset(s, sub) {
                        if (!options.matchCase) s = s.toLowerCase();
                        var i = s.indexOf(sub);
                        if (i == -1) return false;
                        return i == 0 || options.matchContains;
                };

                this.flushCache = function() {
                        flushCache();
                };

                this.setExtraParams = function(p) {
                        options.extraParams = p;
                };

                this.findValue = function(){
                        var q = $input.val();

                        if (!options.matchCase) q = q.toLowerCase();
                        var data = options.cacheLength ? loadFromCache(q) : null;
                        if (data) {
                                findValueCallback(q, data);
                        } else if( (typeof options.url == "string") && (options.url.length > 0) ){
                                $.get(makeUrl(q), function(data) {
                                        data = parseData(data)
                                        addToCache(q, data);
                                        findValueCallback(q, data);
                                });
                        } else {
                                // no matches
                                findValueCallback(q, null);
                        }
                }

                function findValueCallback(q, data){
                        if (data) $input.removeClass(options.loadingClass);

                        var num = (data) ? data.length : 0;
                        var li = null;

                        for (var i=0; i < num; i++) {
                                var row = data[i];

                                if( row[0].toLowerCase() == q.toLowerCase() ){
                                        li = document.createElement("li");
                                        if (options.formatItem) {
                                                li.innerHTML = options.formatItem(row, i, num);
                                                li.selectValue = row[0];
                                        } else {
                                                li.innerHTML = row[0];
                                                li.selectValue = row[0];
                                        }
                                        var extra = null;
                                        if( row.length > 1 ){
                                                extra = [];
                                                for (var j=1; j < row.length; j++) {
                                                        extra[extra.length] = row[j];
                                                }
                                        }
                                        li.extra = extra;
                                }
                        }

                        if( options.onFindValue ) setTimeout(function() { options.onFindValue(li) }, 1);
                }

                function addToCache(q, data) {
                        if (!data || !q || !options.cacheLength) return;
                        if (!cache.length || cache.length > options.cacheLength) {
                                flushCache();
                                cache.length++;
                        } else if (!cache[q]) {
                                cache.length++;
                        }
                        cache.data[q] = data;
                };

                function findPos(obj) {
                        var curleft = obj.offsetLeft || 0;
                        var curtop = obj.offsetTop || 0;
                        while (obj = obj.offsetParent) {
                                curleft += obj.offsetLeft
                                curtop += obj.offsetTop
                        }
                        return {x:curleft,y:curtop};
                }
        }

        /**
         * The autocomplete plugin itself
         */
        $.fn.autocomplete = function(url, options, data) {

                // Make sure options exists
                options = options || {};
                // Set url as option
                options.url = url;
                // set some bulk local data
                options.data = ((typeof data == "object") && (data.constructor == Array)) ? data : null;

                // Set default values for required options (set global defaults in $.fn.autocomplete.defaults)
                options = $.extend({
                        inputClass: "ac_input",
                        resultsClass: "ac_results",
                        lineSeparator: "\n",
                        cellSeparator: "|",
                        minChars: 1,
                        delay: 400,
                        matchCase: 0,
                        matchSubset: 1,
                        matchContains: 0,
                        cacheLength: 0,
                        mustMatch: 0,
                        extraParams: {},
                        loadingClass: "ac_loading",
                        selectFirst: false,
                        selectOnly: false,
                        maxItemsToShow: -1,
                        autoFill: false,
                        width: 0
                }, $.fn.autocomplete.defaults, options);
           
                options.width = parseInt(options.width, 10);
               
                return this.each(function() {
                        var input = this;
                        new $.autocomplete(input, options);
                });

        }

})(jQuery);