;(function($) { $.fn.extend({ autocomplete: function(urlOrData, options) { var isUrl = typeof urlOrData == "string"; options = $.extend({}, $.Autocompleter.defaults, { url: isUrl ? urlOrData : null, data: isUrl ? null : urlOrData, delay: isUrl ? $.Autocompleter.defaults.delay : 10, max: options && !options.scroll ? 10 : 150
}, options); options.highlight = options.highlight || function(value) { return value;}; options.formatMatch = options.formatMatch || options.formatItem; return this.each(function() { new $.Autocompleter(this, options);});}, result: function(handler) { return this.bind("result", handler);}, search: function(handler) { return this.trigger("search", [handler]);}, flushCache: function() { return this.trigger("flushCache");}, setOptions: function(options){ return this.trigger("setOptions", [options]);}, unautocomplete: function() { return this.trigger("unautocomplete");}
}); $.Autocompleter = function(input, options) { var KEY = { UP: 38, DOWN: 40, DEL: 46, TAB: 9, RETURN: 13, ESC: 27, COMMA: 188, PAGEUP: 33, PAGEDOWN: 34, BACKSPACE: 8
}; var $input = $(input).attr("autocomplete", "off").addClass(options.inputClass); var timeout; var previousValue = ""; var cache = $.Autocompleter.Cache(options); var hasFocus = 0; var lastKeyPressCode; var config = { mouseDownOnSelect: false
}; var select = $.Autocompleter.Select(options, input, selectCurrent, config); var blockSubmit; $.browser.opera && $(input.form).bind("submit.autocomplete", function() { if (blockSubmit) { blockSubmit = false; return false;}
}); $input.bind(($.browser.opera ? "keypress" : "keydown") + ".autocomplete", function(event) { lastKeyPressCode = event.keyCode; switch(event.keyCode) { case KEY.UP:
event.preventDefault(); if ( select.visible() ) { select.prev();} else { onChange(0, true);}
break; case KEY.DOWN:
event.preventDefault(); if ( select.visible() ) { select.next();} else { onChange(0, true);}
break; case KEY.PAGEUP:
event.preventDefault(); if ( select.visible() ) { select.pageUp();} else { onChange(0, true);}
break; case KEY.PAGEDOWN:
event.preventDefault(); if ( select.visible() ) { select.pageDown();} else { onChange(0, true);}
break; case options.multiple && $.trim(options.multipleSeparator) == "," && KEY.COMMA:
case KEY.TAB:
case KEY.RETURN:
if( selectCurrent() ) { event.preventDefault(); blockSubmit = true; return false;}
break; case KEY.ESC:
select.hide(); break; default:
clearTimeout(timeout); timeout = setTimeout(onChange, options.delay); break;}
}).focus(function(){ hasFocus++;}).blur(function() { hasFocus = 0; if (!config.mouseDownOnSelect) { hideResults();}
}).click(function() { if ( hasFocus++ > 1 && !select.visible() ) { onChange(0, true);}
}).bind("search", function() { var fn = (arguments.length > 1) ? arguments[1] : null; function findValueCallback(q, data) { var result; if( data && data.length ) { for (var i=0; i < data.length; i++) { if( data[i].result.toLowerCase() == q.toLowerCase() ) { result = data[i]; break;}
}
}
if( typeof fn == "function" ) fn(result); else $input.trigger("result", result && [result.data, result.value]);}
$.each(trimWords($input.val()), function(i, value) { request(value, findValueCallback, findValueCallback);});}).bind("flushCache", function() { cache.flush();}).bind("setOptions", function() { $.extend(options, arguments[1]); if ( "data" in arguments[1] )
cache.populate();}).bind("unautocomplete", function() { select.unbind(); $input.unbind(); $(input.form).unbind(".autocomplete");}); function selectCurrent() { var selected = select.selected(); if( !selected )
return false; var v = selected.result; previousValue = v; if ( options.multiple ) { var words = trimWords($input.val()); if ( words.length > 1 ) { v = words.slice(0, words.length - 1).join( options.multipleSeparator ) + options.multipleSeparator + v;}
v += options.multipleSeparator;}
$input.val(v); hideResultsNow(); $input.trigger("result", [selected.data, selected.value]); return true;}
function onChange(crap, skipPrevCheck) { if( lastKeyPressCode == KEY.DEL ) { select.hide(); return;}
var currentValue = $input.val(); if ( !skipPrevCheck && currentValue == previousValue )
return; previousValue = currentValue; currentValue = lastWord(currentValue); if ( currentValue.length >= options.minChars) { $input.addClass(options.loadingClass); if (!options.matchCase)
currentValue = currentValue.toLowerCase(); request(currentValue, receiveData, hideResultsNow);} else { stopLoading(); select.hide();}
}; function trimWords(value) { if ( !value ) { return [""];}
var words = value.split( options.multipleSeparator ); var result = []; $.each(words, function(i, value) { if ( $.trim(value) )
result[i] = $.trim(value);}); return result;}
function lastWord(value) { if ( !options.multiple )
return value; var words = trimWords(value); return words[words.length - 1];}
function autoFill(q, sValue){ if( options.autoFill && (lastWord($input.val()).toLowerCase() == q.toLowerCase()) && lastKeyPressCode != KEY.BACKSPACE ) { $input.val($input.val() + sValue.substring(lastWord(previousValue).length)); $.Autocompleter.Selection(input, previousValue.length, previousValue.length + sValue.length);}
}; function hideResults() { clearTimeout(timeout); timeout = setTimeout(hideResultsNow, 200);}; function hideResultsNow() { var wasVisible = select.visible(); select.hide(); clearTimeout(timeout); stopLoading(); if (options.mustMatch) { $input.search( function (result){ if( !result ) { if (options.multiple) { var words = trimWords($input.val()).slice(0, -1); $input.val( words.join(options.multipleSeparator) + (words.length ? options.multipleSeparator : "") );}
else
$input.val( "" );}
} );}
if (wasVisible)
$.Autocompleter.Selection(input, input.value.length, input.value.length);}; function receiveData(q, data) { if ( data && data.length && hasFocus ) { stopLoading(); select.display(data, q); autoFill(q, data[0].value); select.show();} else { hideResultsNow();}
}; function request(term, success, failure) { if (!options.matchCase)
term = term.toLowerCase(); var data = cache.load(term); if (data && data.length) { success(term, data);} else if( (typeof options.url == "string") && (options.url.length > 0) ){ var extraParams = { timestamp: +new Date()
}; $.each(options.extraParams, function(key, param) { extraParams[key] = typeof param == "function" ? param() : param;}); $.ajax({ mode: "abort", port: "autocomplete" + input.name, dataType: options.dataType, url: options.url, data: $.extend({ q: lastWord(term), limit: options.max
}, extraParams), success: function(data) { var parsed = options.parse && options.parse(data) || parse(data); cache.add(term, parsed); success(term, parsed);}
});} else { select.emptyList(); failure(term);}
}; function parse(data) { var parsed = []; var rows = data.split("\n"); for (var i=0; i < rows.length; i++) { var row = $.trim(rows[i]); if (row) { row = row.split("|"); parsed[parsed.length] = { data: row, value: row[0], result: options.formatResult && options.formatResult(row, row[0]) || row[0]
};}
}
return parsed;}; function stopLoading() { $input.removeClass(options.loadingClass);};}; $.Autocompleter.defaults = { inputClass: "ac_input", resultsClass: "ac_results", loadingClass: "ac_loading", minChars: 1, delay: 400, matchCase: false, matchSubset: true, matchContains: false, cacheLength: 10, max: 100, mustMatch: false, extraParams: {}, selectFirst: true, formatItem: function(row) { return row[0];}, formatMatch: null, autoFill: false, width: 0, multiple: false, multipleSeparator: ", ", highlight: function(value, term) { return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>");}, scroll: true, scrollHeight: 180
}; $.Autocompleter.Cache = function(options) { var data = {}; var length = 0; 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;}; function add(q, value) { if (length > options.cacheLength){ flush();}
if (!data[q]){ length++;}
data[q] = value;}
function populate(){ if( !options.data ) return false; var stMatchSets = {}, nullData = 0; if( !options.url ) options.cacheLength = 1; stMatchSets[""] = []; for ( var i = 0, ol = options.data.length; i < ol; i++ ) { var rawValue = options.data[i]; rawValue = (typeof rawValue == "string") ? [rawValue] : rawValue; var value = options.formatMatch(rawValue, i+1, options.data.length); if ( value === false )
continue; var firstChar = value.charAt(0).toLowerCase(); if( !stMatchSets[firstChar] )
stMatchSets[firstChar] = []; var row = { value: value, data: rawValue, result: options.formatResult && options.formatResult(rawValue) || value
}; stMatchSets[firstChar].push(row); if ( nullData++ < options.max ) { stMatchSets[""].push(row);}
}; $.each(stMatchSets, function(i, value) { options.cacheLength++; add(i, value);});}
setTimeout(populate, 25); function flush(){ data = {}; length = 0;}
return { flush: flush, add: add, populate: populate, load: function(q) { if (!options.cacheLength || !length)
return null; if( !options.url && options.matchContains ){ var csub = []; for( var k in data ){ if( k.length > 0 ){ var c = data[k]; $.each(c, function(i, x) { if (matchSubset(x.value, q)) { csub.push(x);}
});}
}
return csub;} else
if (data[q]){ return data[q];} else
if (options.matchSubset) { for (var i = q.length - 1; i >= options.minChars; i--) { var c = data[q.substr(0, i)]; if (c) { var csub = []; $.each(c, function(i, x) { if (matchSubset(x.value, q)) { csub[csub.length] = x;}
}); return csub;}
}
}
return null;}
};}; $.Autocompleter.Select = function (options, input, select, config) { var CLASSES = { ACTIVE: "ac_over"
}; var listItems, active = -1, data, term = "", needsInit = true, element, list; function init() { if (!needsInit)
return; element = $("<div/>")
.hide()
.addClass(options.resultsClass)
.css("position", "absolute")
.appendTo(document.body); list = $("<ul/>").appendTo(element).mouseover( function(event) { if(target(event).nodeName && target(event).nodeName.toUpperCase() == 'LI') { active = $("li", list).removeClass(CLASSES.ACTIVE).index(target(event)); $(target(event)).addClass(CLASSES.ACTIVE);}
}).click(function(event) { $(target(event)).addClass(CLASSES.ACTIVE); select(); input.focus(); return false;}).mousedown(function() { config.mouseDownOnSelect = true;}).mouseup(function() { config.mouseDownOnSelect = false;}); if( options.width > 0 )
element.css("width", options.width); needsInit = false;}
function target(event) { var element = event.target; while(element && element.tagName != "LI")
element = element.parentNode; if(!element)
return []; return element;}
function moveSelect(step) { listItems.slice(active, active + 1).removeClass(CLASSES.ACTIVE); movePosition(step); var activeItem = listItems.slice(active, active + 1).addClass(CLASSES.ACTIVE); if(options.scroll) { var offset = 0; listItems.slice(0, active).each(function() { offset += this.offsetHeight;}); if((offset + activeItem[0].offsetHeight - list.scrollTop()) > list[0].clientHeight) { list.scrollTop(offset + activeItem[0].offsetHeight - list.innerHeight());} else if(offset < list.scrollTop()) { list.scrollTop(offset);}
}
}; function movePosition(step) { active += step; if (active < 0) { active = listItems.size() - 1;} else if (active >= listItems.size()) { active = 0;}
}
function limitNumberOfItems(available) { return options.max && options.max < available
? options.max
: available;}
function fillList() { list.empty(); var max = limitNumberOfItems(data.length); for (var i=0; i < max; i++) { if (!data[i])
continue; var formatted = options.formatItem(data[i].data, i+1, max, data[i].value, term); if ( formatted === false )
continue; var li = $("<li/>").html( options.highlight(formatted, term) ).addClass(i%2 == 0 ? "ac_even" : "ac_odd").appendTo(list)[0]; $.data(li, "ac_data", data[i]);}
listItems = list.find("li"); if ( options.selectFirst ) { listItems.slice(0, 1).addClass(CLASSES.ACTIVE); active = 0;}
if ( $.fn.bgiframe )
list.bgiframe();}
return { display: function(d, q) { init(); data = d; term = q; fillList();}, next: function() { moveSelect(1);}, prev: function() { moveSelect(-1);}, pageUp: function() { if (active != 0 && active - 8 < 0) { moveSelect( -active );} else { moveSelect(-8);}
}, pageDown: function() { if (active != listItems.size() - 1 && active + 8 > listItems.size()) { moveSelect( listItems.size() - 1 - active );} else { moveSelect(8);}
}, hide: function() { element && element.hide(); listItems && listItems.removeClass(CLASSES.ACTIVE); active = -1;}, visible : function() { return element && element.is(":visible");}, current: function() { return this.visible() && (listItems.filter("." + CLASSES.ACTIVE)[0] || options.selectFirst && listItems[0]);}, show: function() { var offset = $(input).offset(); element.css({ width: typeof options.width == "string" || options.width > 0 ? options.width : $(input).width(), top: offset.top + input.offsetHeight, left: offset.left
}).show(); if(options.scroll) { list.css({ maxHeight: options.scrollHeight, overflow: 'auto'
}); if($.browser.msie && typeof document.body.style.maxHeight === "undefined") { var listHeight = 0; listItems.each(function() { listHeight += this.offsetHeight;}); var scrollbarsVisible = listHeight > options.scrollHeight; list.css('height', scrollbarsVisible ? options.scrollHeight : listHeight ); if (!scrollbarsVisible) { listItems.width( list.width() - parseInt(listItems.css("padding-left")) - parseInt(listItems.css("padding-right")) );}
}
}
}, selected: function() { var selected = listItems && listItems.filter("." + CLASSES.ACTIVE).removeClass(CLASSES.ACTIVE); return selected && selected.length && $.data(selected[0], "ac_data");}, emptyList: function (){ list && list.empty();}, unbind: function() { element && element.remove();}
};}; $.Autocompleter.Selection = function(field, start, end) { 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();};})(jQuery);