superfish.js

/*
 * Superfish v1.4.8 - jQuery menu widget
 * Copyright (c) 2008 Joel Birch
 *
 * Dual licensed under the MIT and GPL licenses:
 *  http://www.opensource.org/licenses/mit-license.php
 *  http://www.gnu.org/licenses/gpl.html
 *
 * CHANGELOG: http://users.tpg.com.au/j_birch/plugins/superfish/changelog.txt
 */

;
(function($){
    $.fn.superfish = function(op){

        var sf = $.fn.superfish,
        c = sf.c,
        menuActive = false,
        $arrow = $(['<span class="',c.arrowClass,'"> &#187;</span>'].join('')),
        click = function(){
            var $$ = $(this), menu = getMenu($$), o = sf.op;
            if (o.firstOnClick && !menuActive && $$.parent()[0] == menu) {
                menuActive = true;
                clearTimeout(menu.sfTimer);
                $$.showSuperfishUl().siblings().hideSuperfishUl();
                return false; // prevent redirect to anchor target href
            }
        },
        over = function(){
            var $$ = $(this), menu = getMenu($$), o = sf.op;
            if (!o.firstOnClick || menuActive || $$.parent()[0] != menu) {
                clearTimeout(menu.sfTimer);
                $$.showSuperfishUl().siblings().hideSuperfishUl();
            }
        },
        out = function(){
            var $$ = $(this), menu = getMenu($$), o = sf.op;
            clearTimeout(menu.sfTimer);
            menu.sfTimer=setTimeout(function(){
                o.retainPath=($.inArray($$[0],o.$path)>-1);
                $$.hideSuperfishUl();
                if (o.$path.length && $$.parents(['li.',o.hoverClass].join('')).length<1){
                    over.call(o.$path);
                }
                else {
                    menuActive = false;
                }
            },o.delay);
        },
        getMenu = function($menu){
            var menu = $menu.parents(['ul.',c.menuClass,':first'].join(''))[0];
            sf.op = sf.o[menu.serial];
            return menu;
        },
        addArrow = function($a){
            $a.addClass(c.anchorClass).append($arrow.clone());
        };

        return this.each(function() {
            var s = this.serial = sf.o.length;
            var o = $.extend({},sf.defaults,op);
            o.$path = $('li.'+o.pathClass,this).slice(0,o.pathLevels).each(function(){
                $(this).addClass([o.hoverClass,c.bcClass].join(' '))
                .filter('li:has(ul)').removeClass(o.pathClass);
            });
            sf.o[s] = sf.op = o;

            $('li:has(ul)',this)[($.fn.hoverIntent && !o.disableHI) ? 'hoverIntent' : 'hover'](over,out)
            .click(click)
            .each(function() {
                if (o.autoArrows) addArrow( $('>a:first-child',this) );
            })
            .not('.'+c.bcClass)
            .hideSuperfishUl();

            var $a = $('a',this);
            $a.each(function(i){
                var $li = $a.eq(i).parents('li');
                $a.eq(i).focus(function(){
                    over.call($li);
                }).blur(function(){
                    out.call($li);
                });
            });
            o.onInit.call(this);

        }).each(function() {
            var menuClasses = [c.menuClass];
            if (sf.op.dropShadows  && !($.browser.msie && $.browser.version < 7)) menuClasses.push(c.shadowClass);
            $(this).addClass(menuClasses.join(' '));
        });
    };

    var sf = $.fn.superfish;
    sf.o = [];
    sf.op = {};
    sf.IE7fix = function(){
        var o = sf.op;
        if ($.browser.msie && $.browser.version > 6 && o.dropShadows && o.animation.opacity!=undefined)
            this.toggleClass(sf.c.shadowClass+'-off');
    };
    sf.c = {
        bcClass     : 'sf-breadcrumb',
        menuClass   : 'sf-js-enabled',
        anchorClass : 'sf-with-ul',
        arrowClass  : 'sf-sub-indicator',
        shadowClass : 'sf-shadow'
    };
    sf.defaults = {
        hoverClass  : 'sfHover',
        pathClass   : 'overideThisToUse',
        pathLevels  : 1,
        delay       : 800,
        animation   : {
            opacity:'show'
        },
        speed       : 'normal',
        autoArrows  : true,
        dropShadows : true,
        disableHI   : false,        // true disables hoverIntent detection
        onInit      : function(){}, // callback functions
        onBeforeShow: function(){},
        onShow      : function(){},
        onHide      : function(){},
        firstOnClick : false // true - open first level on click (like classic application menu)
    };
    $.fn.extend({
        hideSuperfishUl : function(){
            var o = sf.op,
            not = (o.retainPath===true) ? o.$path : '';
            o.retainPath = false;
            var $ul = $(['li.',o.hoverClass].join(''),this).add(this).not(not).removeClass(o.hoverClass)
            .find('>ul').hide().css('visibility','hidden');
            o.onHide.call($ul);
            return this;
        },
        showSuperfishUl : function(){
            var o = sf.op,
            sh = sf.c.shadowClass+'-off',
            $ul = this.addClass(o.hoverClass)
            .find('>ul:hidden').css('visibility','visible');
            sf.IE7fix.call($ul);
            o.onBeforeShow.call($ul);
            $ul.animate(o.animation,o.speed,function(){
                sf.IE7fix.call($ul);
                o.onShow.call($ul);
            });
            return this;
        }
    });

})(jQuery);