Combobox

(function($, undefined ) {
    $.widget( "ui.combobox", {
    _create: function() {
        var input,
        that = this,
        select = this.element.hide(),
        selected = select.children( ":selected" ),
        value = selected.val() ? selected.text() : "",
        wrapper = this.wrapper = $( "<span>" )
        .addClass( "ui-combobox" )
        .insertAfter( select );

        function removeIfInvalid(element) {
        var value = $( element ).val(),
        matcher = new RegExp( "^" + $.ui.autocomplete.escapeRegex( value ) + "$", "i" ),
        valid = false;
        select.children( "option" ).each(function() {
            if ( $( this ).text().match( matcher ) ) {
            this.selected = valid = true;
            return false;
            }
        });
        if ( !valid ) {
            // remove invalid value, as it didn't match anything
            $( element )
            .val( "" )
            .attr( "title", value + " nenalezeno" )
            .tooltip( "open" );
            select.val( "" );
            setTimeout(function() {
            input.tooltip( "close" ).attr( "title", "" );
            }, 2500 );
            input.data( "autocomplete" ).term = "";
            return false;
        }
        }

        input = $( "<input>" )
        .appendTo( wrapper )
        .val( value )
        .attr( "title", "" )
        .addClass( "ui-state-default ui-combobox-input" )
        .autocomplete({
        delay: 200,
        minLength: 3,
        source: function( request, response ) {
            var matcher = new RegExp( $.ui.autocomplete.escapeRegex(request.term), "i" );
            response( select.children( "option" ).map(function() {
            var text = $( this ).text();
            if ( this.value && ( !request.term || matcher.test(text) ) )
                return {
                label: text.replace(
                    new RegExp(
                    "(?![^&;]+;)(?!<[^<>]*)(" +
                    $.ui.autocomplete.escapeRegex(request.term) +
                    ")(?![^<>]*>)(?![^&;]+;)", "gi"
                    ), "<strong>$1</strong>" ),
                value: text,
                option: this
                };
            }) );
        },
        select: function( event, ui ) {
            ui.item.option.selected = true;
            that._trigger( "selected", event, {
            item: ui.item.option
            });
        },
        change: function( event, ui ) {
            if ( !ui.item )
            return removeIfInvalid( this );
        }
        })
        .addClass( "ui-widget ui-widget-content ui-corner-left" );

        input.data( "autocomplete" )._renderItem = function( ul, item ) {
        return $( "<li>" )
        .data( "item.autocomplete", item )
        .append( "<a>" + item.label + "</a>" )
        .appendTo( ul );
        };

        $( "<a>" )
        .attr( "tabIndex", -1 )
        .attr( "title", "Vše" )
        .tooltip()
        .appendTo( wrapper )
        .button({
        icons: {
            primary: "ui-icon-triangle-1-s"
        },
        text: false
        })
        .removeClass( "ui-corner-all" )
        .addClass( "ui-corner-right ui-combobox-toggle" )
        .click(function() {
        // close if already visible
        if ( input.autocomplete( "widget" ).is( ":visible" ) ) {
            input.autocomplete( "close" );
            removeIfInvalid( input );
            return;
        }

        // work around a bug (likely same cause as #5265)
        $( this ).blur();

        // pass empty string as value to search for, displaying all results
        input.autocomplete( "search", "" );
        input.focus();
        });

        input
        .tooltip({
        position: {
            of: this.button
        },
        tooltipClass: "ui-state-highlight"
        });
    },

    destroy: function() {
        this.wrapper.remove();
        this.element.show();
        $.Widget.prototype.destroy.call( this );
    }
    });
})(jQuery);

$(function() {
    $( "#combobox" ).combobox();
    $( "#toggle" ).click(function() {
    $( "#combobox" ).toggle();
    });
});