YUI.add("moodle-core-actionmenu",function(e,t){var n=e.one(e.config.doc.body),r={MENUSHOWN:"action-menu-shown"},i={CAN_RECEIVE_FOCUS_SELECTOR:'input:not([type="hidden"]), a[href], button, textarea, select, [tabindex]',MENU:".moodle-actionmenu[data-enhance=moodle-core-actionmenu]",MENUCONTENT:".menu[data-rel=menu-content]",MENUCONTENTCHILD:"li a",MENUCHILD:".menu li a",TOGGLE:".toggle-display",KEEPOPEN:'[data-keepopen="1"]'},s,o={TL:"tl",TR:"tr",BL:"bl",BR:"br"};s=function(){s.superclass.constructor.apply(this,arguments)},s.prototype={dialogue:null,events:[],owner:null,menulink:null,initializer:function(){e.all(i.MENU).each(this.enhance,this),n.delegate("click",this.toggleMenu,i.MENU+" "+i.TOGGLE,this),n.delegate("key",this.toggleMenu,"enter,space",i.MENU+" "+i.TOGGLE,this)},enhance:function(e){var t=e.one(i.MENUCONTENT),n;if(!t)return!1;n=t.getData("align")||this.get("align").join("-"),e.one(i.TOGGLE).set("aria-haspopup",!0),t.set("aria-hidden",!0),t.hasClass("align-"+n)||t.addClass("align-"+n),t.hasChildNodes()&&e.setAttribute("data-enhanced","1")},hideMenu:function(){this.dialogue&&(this.dialogue.removeClass("show"),this.dialogue.one(i.MENUCONTENT).set("aria-hidden",!0),this.dialogue=null);for(var e in this.events)this.events[e].detach&&this.events[e].detach();this.events=[],this.owner&&(this.owner.removeClass(r.MENUSHOWN),this.owner=null),this.menulink&&(this.menulink.focus(),this.menulink=null)},toggleMenu:function(e){var t=e.target.ancestor(i.MENU),r=t.hasClass("show");e.halt(!0),this.hideMenu();if(r)return;this.showMenu(e,t),this.events.push(n.on("key",this.hideMenu,"esc",this)),this.events.push(n.on("click",this.hideIfOutside,this)),this.events.push(n.delegate("focus",this.hideIfOutside,"*",this)),this.events.push(t.delegate("key",this.checkFocus,"down:9",i.MENUCHILD,this)),this.events.push(t.delegate("click",function(e){if(e.currentTarget.test(i.KEEPOPEN))return;this.hideMenu()},i.MENUCHILD,this))},checkFocus:function(e){var t=this.dialogue.all(i.MENUCHILD),n,r;t&&(n=t.item(0),r=t.pop());var s=this.menulink;if(e.target===n&&e.shiftKey)this.hideMenu(),e.preventDefault();else if(e.target===r&&!e.shiftKey){var o;this.hideMenu()&&(o=s.next(i.CAN_RECEIVE_FOCUS_SELECTOR),o&&o.focus())}},hideIfOutside:function(e){e.target.ancestor(i.MENUCHILD,!0)||this.hideMenu()},showMenu:function(e,t){var n=t.getData("owner"),s=t.one(i.MENUCONTENT),o;return this.owner=n?t.ancestor(n):null,this.dialogue=t,t.addClass("show"),this.owner&&(this.owner.addClass(r.MENUSHOWN),this.menulink=this.owner.one(i.TOGGLE)),this.constrain(s.set("aria-hidden",!1)),e.type&&e.type==="key"&&(o=s.one(i.MENUCONTENTCHILD),o&&o.focus()),!0},constrain:function(e){var t=e.getData("constraint"),n=e.getX(),r=e.getY(),i=e.get("offsetWidth"),s=e.get("offsetHeight"),o=0,u=0,a,f,l="auto",c=null,h=null,p=null,d=null,v=null;t&&(t=e.ancestor(t)),t?(a=t.get("offsetWidth"),f=t.get("offsetHeight"),o=t.getX(),u=t.getY(),l=t.getStyle("overflow")||"auto"):(a=e.get("docWidth"),f=e.get("docHeight")),i>a?(c=i=a,p=n=o):n<o?p=n=o:n+i>=o+a&&(p=o+a-i),s>f&&l.toLowerCase()==="hidden"&&(h=s=f,e.setStyle("overflow","auto"));if(r>=u&&r+s>u+f){d=u+f-s;try{v=e.getStyle("boxShadow").replace(/.*? (\d+)px \d+px$/,"$1"),(new RegExp(/^\d+$/)).test(v)&&d-u>v&&(d-=v)}catch(m){}}p!==null&&e.setX(p),d!==null&&e.setY(d),c!==null&&e.setStyle("width",c.toString()+"px"),h!==null&&e.setStyle("height",h.toString()+"px")}},e.extend(s,e.Base,s.prototype,{NAME:"moodle-core-actionmenu",ATTRS:{align:{value:[o.TR,o.BR]}}}),M.core=M.core||{},M.core.actionmenu=M.core.actionmenu||{},M.core.actionmenu.instance=null,M.core.actionmenu.init=M.core.actionmenu.init||function(e){M.core.actionmenu.instance=M.core.actionmenu.instance||new s(e)},M.core.actionmenu.newDOMNode=function(e){if(M.core.actionmenu.instance===null)return!0;e.all(i.MENU).each(M.core.actionmenu.instance.enhance,M.core.actionmenu.instance)}},"@VERSION@",{requires:["base","event"]});
