define(["exports","./util"],function(a,b){"use strict";function c(a){return a&&a.__esModule?a:{"default":a}}function d(a,b){if(!(a instanceof b))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(a,"__esModule",{value:!0});var e=c(b),f=function(){function a(a,b){for(var c=0;c<b.length;c++){var d=b[c];d.enumerable=d.enumerable||!1,d.configurable=!0,"value"in d&&(d.writable=!0),Object.defineProperty(a,d.key,d)}}return function(b,c,d){return c&&a(b.prototype,c),d&&a(b,d),b}}(),g=function(a){var b="dropdown",c="4.0.0-alpha.4",g="bs.dropdown",h="."+g,i=".data-api",j=a.fn[b],k=27,l=38,m=40,n=3,o={HIDE:"hide"+h,HIDDEN:"hidden"+h,SHOW:"show"+h,SHOWN:"shown"+h,CLICK:"click"+h,CLICK_DATA_API:"click"+h+i,KEYDOWN_DATA_API:"keydown"+h+i},p={BACKDROP:"dropdown-backdrop",DISABLED:"disabled",OPEN:"open"},q={BACKDROP:".dropdown-backdrop",DATA_TOGGLE:'[data-toggle="dropdown"]',FORM_CHILD:".dropdown form",ROLE_MENU:'[role="menu"]',ROLE_LISTBOX:'[role="listbox"]',NAVBAR_NAV:".navbar-nav",VISIBLE_ITEMS:'[role="menu"] li:not(.disabled) a, [role="listbox"] li:not(.disabled) a'},r=function(){function b(a){d(this,b),this._element=a,this._addEventListeners()}return f(b,[{key:"toggle",value:function(){if(this.disabled||a(this).hasClass(p.DISABLED))return!1;var c=b._getParentFromElement(this),d=a(c).hasClass(p.OPEN);if(b._clearMenus(),d)return!1;if("ontouchstart"in document.documentElement&&!a(c).closest(q.NAVBAR_NAV).length){var e=document.createElement("div");e.className=p.BACKDROP,a(e).insertBefore(this),a(e).on("click",b._clearMenus)}var f={relatedTarget:this},g=a.Event(o.SHOW,f);return a(c).trigger(g),!g.isDefaultPrevented()&&(this.focus(),this.setAttribute("aria-expanded","true"),a(c).toggleClass(p.OPEN),a(c).trigger(a.Event(o.SHOWN,f)),!1)}},{key:"dispose",value:function(){a.removeData(this._element,g),a(this._element).off(h),this._element=null}},{key:"_addEventListeners",value:function(){a(this._element).on(o.CLICK,this.toggle)}}],[{key:"_jQueryInterface",value:function(c){return this.each(function(){var d=a(this).data(g);if(d||a(this).data(g,d=new b(this)),"string"==typeof c){if(void 0===d[c])throw new Error('No method named "'+c+'"');d[c].call(this)}})}},{key:"_clearMenus",value:function(c){if(!c||c.which!==n){var d=a(q.BACKDROP)[0];d&&d.parentNode.removeChild(d);for(var e=a.makeArray(a(q.DATA_TOGGLE)),f=0;f<e.length;f++){var g=b._getParentFromElement(e[f]),h={relatedTarget:e[f]};if(a(g).hasClass(p.OPEN)&&!(c&&"click"===c.type&&/input|textarea/i.test(c.target.tagName)&&a.contains(g,c.target))){var i=a.Event(o.HIDE,h);a(g).trigger(i),i.isDefaultPrevented()||(e[f].setAttribute("aria-expanded","false"),a(g).removeClass(p.OPEN).trigger(a.Event(o.HIDDEN,h)))}}}}},{key:"_getParentFromElement",value:function(b){var c=void 0,d=e["default"].getSelectorFromElement(b);return d&&(c=a(d)[0]),c||b.parentNode}},{key:"_dataApiKeydownHandler",value:function(c){if(/(38|40|27|32)/.test(c.which)&&!/input|textarea/i.test(c.target.tagName)&&(c.preventDefault(),c.stopPropagation(),!this.disabled&&!a(this).hasClass(p.DISABLED))){var d=b._getParentFromElement(this),e=a(d).hasClass(p.OPEN);if(!e&&c.which!==k||e&&c.which===k){if(c.which===k){var f=a(d).find(q.DATA_TOGGLE)[0];a(f).trigger("focus")}return void a(this).trigger("click")}var g=a.makeArray(a(q.VISIBLE_ITEMS));if(g=g.filter(function(a){return a.offsetWidth||a.offsetHeight}),g.length){var h=g.indexOf(c.target);c.which===l&&h>0&&h--,c.which===m&&h<g.length-1&&h++,h<0&&(h=0),g[h].focus()}}}},{key:"VERSION",get:function(){return c}}]),b}();return a(document).on(o.KEYDOWN_DATA_API,q.DATA_TOGGLE,r._dataApiKeydownHandler).on(o.KEYDOWN_DATA_API,q.ROLE_MENU,r._dataApiKeydownHandler).on(o.KEYDOWN_DATA_API,q.ROLE_LISTBOX,r._dataApiKeydownHandler).on(o.CLICK_DATA_API,r._clearMenus).on(o.CLICK_DATA_API,q.DATA_TOGGLE,r.prototype.toggle).on(o.CLICK_DATA_API,q.FORM_CHILD,function(a){a.stopPropagation()}),a.fn[b]=r._jQueryInterface,a.fn[b].Constructor=r,a.fn[b].noConflict=function(){return a.fn[b]=j,r._jQueryInterface},r}(jQuery);a["default"]=g});