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4 lines
9.4 KiB
4 lines
9.4 KiB
10 years ago
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/*! bootstrap-accessibility-plugin - v1.0.4 - 2014-11-03
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* https://github.com/paypal/bootstrap-accessibility-plugin
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* Copyright (c) 2014 PayPal Accessibility Team; Licensed BSD */
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!function($){"use strict";var uniqueId=function(prefix){return(prefix||"ui-id")+"-"+Math.floor(1e3*Math.random()+1)},focusable=function(element,isTabIndexNotNaN){var map,mapName,img,nodeName=element.nodeName.toLowerCase();return"area"===nodeName?(map=element.parentNode,mapName=map.name,element.href&&mapName&&"map"===map.nodeName.toLowerCase()?(img=$("img[usemap='#"+mapName+"']")[0],!!img&&visible(img)):!1):(/input|select|textarea|button|object/.test(nodeName)?!element.disabled:"a"===nodeName?element.href||isTabIndexNotNaN:isTabIndexNotNaN)&&visible(element)},visible=function(element){return $.expr.filters.visible(element)&&!$(element).parents().addBack().filter(function(){return"hidden"===$.css(this,"visibility")}).length};$.extend($.expr[":"],{data:$.expr.createPseudo?$.expr.createPseudo(function(dataName){return function(elem){return!!$.data(elem,dataName)}}):function(elem,i,match){return!!$.data(elem,match[3])},focusable:function(element){return focusable(element,!isNaN($.attr(element,"tabindex")))},tabbable:function(element){var tabIndex=$.attr(element,"tabindex"),isTabIndexNaN=isNaN(tabIndex);return(isTabIndexNaN||tabIndex>=0)&&focusable(element,!isTabIndexNaN)}}),$(".modal-dialog").attr({role:"document"});var modalhide=$.fn.modal.Constructor.prototype.hide;$.fn.modal.Constructor.prototype.hide=function(){var modalOpener=this.$element.parent().find('[data-target="#'+this.$element.attr("id")+'"]');modalhide.apply(this,arguments),modalOpener.focus(),$(document).off("keydown.bs.modal")};var modalfocus=$.fn.modal.Constructor.prototype.enforceFocus;$.fn.modal.Constructor.prototype.enforceFocus=function(){var focEls=this.$element.find(":tabbable"),lastEl=focEls[focEls.length-1];$(document).on("keydown.bs.modal",$.proxy(function(ev){!this.$element.has(ev.target).length&&ev.shiftKey&&9===ev.keyCode&&(lastEl.focus(),ev.preventDefault())},this)),modalfocus.apply(this,arguments)};var $par,firstItem,toggle="[data-toggle=dropdown]",focusDelay=200,menus=$(toggle).parent().find("ul").attr("role","menu"),lis=menus.find("li").attr("role","presentation");lis.find("a").attr({role:"menuitem",tabIndex:"-1"}),$(toggle).attr({"aria-haspopup":"true","aria-expanded":"false"}),$(toggle).parent().on("shown.bs.dropdown",function(){$par=$(this);var $toggle=$par.find(toggle);$toggle.attr("aria-expanded","true"),$toggle.on("keydown.bs.modal",$.proxy(function(){setTimeout(function(){firstItem=$(".dropdown-menu [role=menuitem]:visible",$par)[0];try{firstItem.focus()}catch(ex){}},focusDelay)},this))}),$(toggle).parent().on("hidden.bs.dropdown",function(){$par=$(this);var $toggle=$par.find(toggle);$toggle.attr("aria-expanded","false")}),$(document).on("focusout.dropdown.data-api",".dropdown-menu",function(){var $this=$(this),that=this;setTimeout(function(){$.contains(that,document.activeElement)||($this.parent().removeClass("open"),$this.parent().find("[data-toggle=dropdown]").attr("aria-expanded","false"))},150)}).on("keydown.bs.dropdown.data-api",toggle+", [role=menu]",$.fn.dropdown.Constructor.prototype.keydown);var $tablist=$(".nav-tabs, .nav-pills"),$lis=$tablist.children("li"),$tabs=$tablist.find('[data-toggle="tab"], [data-toggle="pill"]');$tabs&&($tablist.attr("role","tablist"),$lis.attr("role","presentation"),$tabs.attr("role","tab")),$tabs.each(function(){var tabpanel=$($(this).attr("href")),tab=$(this),tabid=tab.attr("id")||uniqueId("ui-tab");tab.attr("id",tabid),tab.parent().hasClass("active")?(tab.attr({tabIndex:"0","aria-selected":"true","aria-controls":tab.attr("href").substr(1)}),tabpanel.attr({role:"tabpanel",tabIndex:"0","aria-hidden":"false","aria-labelledby":tabid})):(tab.attr({tabIndex:"-1","aria-selected":"false","aria-controls":tab.attr("href").substr(1)}),tabpanel.attr({role:"tabpanel",tabIndex:"-1","aria-hidden":"true","aria-labelledby":tabid}))}),$.fn.tab.Constructor.prototype.keydown=function(e){var $items,index,$this=$(this),$ul=$this.closest("ul[role=tablist] "),k=e.which||e.keyCode;if($this=$(this),/(37|38|39|40)/.test(k)){$items=$ul.find("[role=tab]:visible"),index=$items.index($items.filter(":focus")),(38==k||37==k)&&
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