(function(e,f){"object"===typeof exports&&"undefined"!==typeof module?f():"function"===typeof define&&define.amd?define("inert",f):f()})(this,function(){function e(b,a,d){if(b.nodeType==Node.ELEMENT_NODE){a&&a(b);var c=b.shadowRoot||b.webkitShadowRoot;if(c){e(c,a,c);return}if("content"==b.localName){b=b.getDistributedNodes?b.getDistributedNodes():[];for(c=0;c<b.length;c++)e(b[c],a,d);return}if("slot"==b.localName){b=b.assignedNodes?b.assignedNodes({flatten:!0}):[];for(c=0;c<b.length;c++)e(b[c],a,
d);return}}for(b=b.firstChild;null!=b;)e(b,a,d),b=b.nextSibling}function f(b){if(!b.querySelector("style#inert-style")){var a=document.createElement("style");a.setAttribute("id","inert-style");a.textContent="\n[inert] {\n\tpointer-events: none;\n\tcursor: default;\n}\n\n[inert], [inert] * {\n\tuser-select: none;\n\t-webkit-user-select: none;\n\t-moz-user-select: none;\n\t-ms-user-select: none;\n}\n";b.appendChild(a)}}var k=function(b,a){var d=window.Element.prototype;d=d.matches||d.mozMatchesSelector||
d.msMatchesSelector||d.oMatchesSelector||d.webkitMatchesSelector;if(!b||1!==b.nodeType)return!1;var c=b.parentNode;if(d)return d.call(b,a);a=c.querySelectorAll(a);d=a.length;for(c=0;c<d;c++)if(a[c]===b)return!0;return!1},l=function(b,a){if(!(b instanceof a))throw new TypeError("Cannot call a class as a function");},m=function(){function b(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(a,
d,c){d&&b(a.prototype,d);c&&b(a,c);return a}}(),h=Array.prototype.slice,p=function(){function b(a,d){l(this,b);this._inertManager=d;this._rootElement=a;this._managedNodes=new Set([]);this._rootElement.hasAttribute("aria-hidden")&&(this._savedAriaHidden=this._rootElement.getAttribute("aria-hidden"));this._rootElement.setAttribute("aria-hidden","true");this._makeSubtreeUnfocusable(this._rootElement);this._observer=new MutationObserver(this._onMutation.bind(this));this._observer.observe(this._rootElement,
{attributes:!0,childList:!0,subtree:!0})}m(b,[{key:"destructor",value:function(){this._observer.disconnect();this._observer=null;this._rootElement&&(this.hasSavedAriaHidden?this._rootElement.setAttribute("aria-hidden",this.savedAriaHidden):this._rootElement.removeAttribute("aria-hidden"));this._rootElement=null;this._managedNodes.forEach(function(a){this._unmanageNode(a.node)},this);this._inertManager=this._managedNodes=null}},{key:"managedNodes",get:function(){return new Set(this._managedNodes)}},
{key:"hasSavedAriaHidden",get:function(){return"_savedAriaHidden"in this}},{key:"savedAriaHidden",set:function(a){this._savedAriaHidden=a},get:function(){return this._savedAriaHidden}},{key:"_makeSubtreeUnfocusable",value:function(a){var b=this;e(a,function(a){return b._visitNode(a)});var c=document.activeElement;if(!document.body.contains(a)){for(var g=a,n=void 0;g;){if(g.nodeType===Node.DOCUMENT_FRAGMENT_NODE){n=g;break}g=g.parentNode}n&&(c=n.activeElement)}a.contains(c)&&(c.blur(),c===document.activeElement&&
document.body.focus())}},{key:"_visitNode",value:function(a){a.nodeType===Node.ELEMENT_NODE&&(a!==this._rootElement&&a.hasAttribute("inert")&&this._adoptInertRoot(a),(k(a,"a[href],area[href],input:not([disabled]),select:not([disabled]),textarea:not([disabled]),button:not([disabled]),iframe,object,embed,[contenteditable]")||a.hasAttribute("tabindex"))&&this._manageNode(a))}},{key:"_manageNode",value:function(a){a=this._inertManager.register(a,this);this._managedNodes.add(a)}},{key:"_unmanageNode",
value:function(a){(a=this._inertManager.deregister(a,this))&&this._managedNodes.delete(a)}},{key:"_unmanageSubtree",value:function(a){var b=this;e(a,function(a){return b._unmanageNode(a)})}},{key:"_adoptInertRoot",value:function(a){var b=this._inertManager.getInertRoot(a);b||(this._inertManager.setInert(a,!0),b=this._inertManager.getInertRoot(a));b.managedNodes.forEach(function(a){this._manageNode(a.node)},this)}},{key:"_onMutation",value:function(a,b){a.forEach(function(a){var b=a.target;if("childList"===
a.type)h.call(a.addedNodes).forEach(function(a){this._makeSubtreeUnfocusable(a)},this),h.call(a.removedNodes).forEach(function(a){this._unmanageSubtree(a)},this);else if("attributes"===a.type)if("tabindex"===a.attributeName)this._manageNode(b);else if(b!==this._rootElement&&"inert"===a.attributeName&&b.hasAttribute("inert")){this._adoptInertRoot(b);var c=this._inertManager.getInertRoot(b);this._managedNodes.forEach(function(a){b.contains(a.node)&&c._manageNode(a.node)})}},this)}}]);return b}(),q=
function(){function b(a,d){l(this,b);this._node=a;this._overrodeFocusMethod=!1;this._inertRoots=new Set([d]);this._destroyed=!1;this.ensureUntabbable()}m(b,[{key:"destructor",value:function(){this._throwIfDestroyed();this._node&&(this.hasSavedTabIndex?this._node.setAttribute("tabindex",this.savedTabIndex):this._node.removeAttribute("tabindex"),this._overrodeFocusMethod&&delete this._node.focus);this._inertRoots=this._node=null;this._destroyed=!0}},{key:"destroyed",get:function(){return this._destroyed}},
{key:"_throwIfDestroyed",value:function(){if(this.destroyed)throw Error("Trying to access destroyed InertNode");}},{key:"hasSavedTabIndex",get:function(){return"_savedTabIndex"in this}},{key:"node",get:function(){this._throwIfDestroyed();return this._node}},{key:"savedTabIndex",set:function(a){this._throwIfDestroyed();this._savedTabIndex=a},get:function(){this._throwIfDestroyed();return this._savedTabIndex}},{key:"ensureUntabbable",value:function(){var a=this.node;k(a,"a[href],area[href],input:not([disabled]),select:not([disabled]),textarea:not([disabled]),button:not([disabled]),iframe,object,embed,[contenteditable]")?
-1===a.tabIndex&&this.hasSavedTabIndex||(a.hasAttribute("tabindex")&&(this._savedTabIndex=a.tabIndex),a.setAttribute("tabindex","-1"),a.nodeType===Node.ELEMENT_NODE&&(a.focus=function(){},this._overrodeFocusMethod=!0)):a.hasAttribute("tabindex")&&(this._savedTabIndex=a.tabIndex,a.removeAttribute("tabindex"))}},{key:"addInertRoot",value:function(a){this._throwIfDestroyed();this._inertRoots.add(a)}},{key:"removeInertRoot",value:function(a){this._throwIfDestroyed();this._inertRoots.delete(a);0===this._inertRoots.size&&
this.destructor()}}]);return b}(),r=new (function(){function b(a){l(this,b);if(!a)throw Error("Missing required argument; InertManager needs to wrap a document.");this._document=a;this._managedNodes=new Map;this._inertRoots=new Map;this._observer=new MutationObserver(this._watchForInert.bind(this));f(a.head||a.body||a.documentElement);"loading"===a.readyState?a.addEventListener("DOMContentLoaded",this._onDocumentLoaded.bind(this)):this._onDocumentLoaded()}m(b,[{key:"setInert",value:function(a,b){if(b){if(!this._inertRoots.has(a)&&
(b=new p(a,this),a.setAttribute("inert",""),this._inertRoots.set(a,b),!this._document.body.contains(a)))for(a=a.parentNode;a;)11===a.nodeType&&f(a),a=a.parentNode}else this._inertRoots.has(a)&&(this._inertRoots.get(a).destructor(),this._inertRoots.delete(a),a.removeAttribute("inert"))}},{key:"getInertRoot",value:function(a){return this._inertRoots.get(a)}},{key:"register",value:function(a,b){var c=this._managedNodes.get(a);void 0!==c?(c.addInertRoot(b),c.ensureUntabbable()):c=new q(a,b);this._managedNodes.set(a,
c);return c}},{key:"deregister",value:function(a,b){var c=this._managedNodes.get(a);if(!c)return null;c.removeInertRoot(b);c.destroyed&&this._managedNodes.delete(a);return c}},{key:"_onDocumentLoaded",value:function(){h.call(this._document.querySelectorAll("[inert]")).forEach(function(a){this.setInert(a,!0)},this);this._observer.observe(this._document.body,{attributes:!0,subtree:!0,childList:!0})}},{key:"_watchForInert",value:function(a,b){a.forEach(function(a){switch(a.type){case "childList":h.call(a.addedNodes).forEach(function(a){if(a.nodeType===
Node.ELEMENT_NODE){var b=h.call(a.querySelectorAll("[inert]"));k(a,"[inert]")&&b.unshift(a);b.forEach(function(a){this.setInert(a,!0)},this)}},this);break;case "attributes":if("inert"===a.attributeName){a=a.target;var b=a.hasAttribute("inert");this.setInert(a,b)}}},this)}}]);return b}())(document);Object.defineProperty(Element.prototype,"inert",{enumerable:!0,get:function(){return this.hasAttribute("inert")},set:function(b){r.setInert(this,b)}})});