@progress/kendo-ui/umd/kendo.dropdownlist.min.js

This package is part of the [Kendo UI for jQuery](http://www.telerik.com/kendo-ui) suite.

/* @license */
(function(e,t){typeof exports==`object`&&typeof module<`u`?t(exports,require(`kendo.list.min.js`),require(`kendo.mobile.scroller.min.js`),require(`kendo.virtuallist.min.js`),require(`kendo.html.button.min.js`),require(`kendo.icons.min.js`)):typeof define==`function`&&define.amd?define([`exports`,`kendo.list.min`,`kendo.mobile.scroller.min`,`kendo.virtuallist.min`,`kendo.html.button.min`,`kendo.icons.min`],t):(e=typeof globalThis<`u`?globalThis:e||self,t((e.kendo=e.kendo||{},e.kendo._globals=e.kendo._globals||{},e.kendo._globals.Dropdownlist={}),e.kendo._globals.List,e.kendo._globals.MobileScroller,e.kendo._globals.Virtuallist,e.kendo._globals.HtmlButton,e.kendo._globals.Icons))})(this,function(e,t,n,r,i,a){Object.defineProperties(e,{__esModule:{value:!0},[Symbol.toStringTag]:{value:`Module`}});let o={id:`dropdownlist`,name:`DropDownList`,category:`web`,description:`The DropDownList widget displays a list of values and allows the selection of a single value from the list.`,depends:[`list`,`html.button`,`icons`],features:[{id:`mobile-scroller`,name:`Mobile scroller`,description:`Support for kinetic scrolling in mobile device`,depends:[`mobile.scroller`]},{id:`virtualization`,name:`VirtualList`,description:`Support for virtualization`,depends:[`virtuallist`]}]};(function(e,t){var n=window.kendo,r=n.htmlEncode,i=n.ui,a=n.html,o=i.List,s=i.Select,c=n.support,l=n._activeElement,u=n.data.ObservableObject,d=n.keys,f=`.kendoDropDownList`,p=f+`FocusEvent`,m=`disabled`,h=`readonly`,g=`change`,_=`k-focus`,v=`k-disabled`,y=`aria-disabled`,b=`aria-readonly`,x=`click`+f+` touchend`+f,S=`mouseenter`+f+` mouseleave`+f,C=`tabindex`,w=`filter`,T=`accept`,E="The `optionLabel` option is not valid due to missing fields. 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e=this;s.fn.destroy.call(e),e.wrapper.off(f),e.wrapper.off(p),e.element.off(f),e._arrow.off(),e._arrow=null,e._arrowIcon=null,e.optionLabel.off(),e.filterInput&&e.filterInput.off(p)},open:function(){var e=this,t=e.dataSource.filter()?e.dataSource.filter().filters.length>0:!1,n=this.listView;e.popup.visible()||(!e.listView.bound()||e._state===T?(e._open=!0,e._state=`rebind`,e.filterInput&&(e.filterInput.val(``),e._prev=``),e.filterInput&&e.options.minLength!==1&&!t?(e.refresh(),e.popup.one(`activate`,e._focusInputHandler),e.wrapper.attr(`aria-activedescendant`,n._optionID),e.popup.open(),e._resizeFilterInput()):e._filterSource()):e._allowOpening()&&(e._focusFilter=!0,e.popup.one(`activate`,e._focusInputHandler),e.popup._hovered=!0,e.wrapper.attr(`aria-activedescendant`,n._optionID),e.popup.open(),e._resizeFilterInput(),e._focusItem()))},close:function(){this._attachAriaActiveDescendant(),this.popup.close()},_attachAriaActiveDescendant:function(){var e=this.wrapper,t=e.find(`.k-input-inner`).attr(`id`);e.attr(`aria-describedby`,t)},_focusInput:function(){this._hasActionSheet()||this._focusElement(this.filterInput)},_resizeFilterInput:function(){var e=this.filterInput,t=this._prevent;if(!(!e||this._hasActionSheet())){var r=this.filterInput[0]===l(),i=n.caret(this.filterInput[0])[0];this._prevent=!0,e.addClass(`k-hidden`),e.closest(`.k-list-filter`).css(`width`,this.popup.element.width()),e.removeClass(`k-hidden`),r&&(e.trigger(`focus`),n.caret(e[0],i)),this._prevent=t}},_allowOpening:function(){return this.hasOptionLabel()||this.filterInput||s.fn._allowOpening.call(this)},toggle:function(e){this._toggle(e,!0)},current:function(e){var n;if(e===t)return n=this.listView.focus(),!n&&this.selectedIndex===0&&this.hasOptionLabel()?this.optionLabel:n;this._focus(e)},dataItem:function(n){var r=this,i=null;if(n===null)return n;if(n===t)i=r.listView.selectedDataItems()[0];else{if(typeof n!=`number`){if(r.options.virtual)return 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e=this,t=e._initialIndex,n=e._state===w,r=e.dataSource.flatView(),i;e._presetValue=!1,e._renderFooter(),e._renderNoData(),e._toggleNoData(!r.length),e._resizePopup(!0),e.popup.position(),e._buildOptions(r),n||(e._open&&e.toggle(e._allowOpening()),e._open=!1,e._fetch||(r.length?(!e.listView.value().length&&t>-1&&t!==null&&e.select(t),e._initialIndex=null,i=e.listView.selectedDataItems()[0],i&&e.text()!==e._text(i)&&e._selectValue(i)):e._textAccessor()!==e._optionLabelText()&&(e.listView.value(``),e._selectValue(null),e._oldIndex=e.selectedIndex))),e._hideBusy(),e.trigger(`dataBound`)},_listChange:function(){this._selectValue(this.listView.selectedDataItems()[0]),(this._presetValue||this._old&&this._oldIndex===-1)&&(this._oldIndex=this.selectedIndex)},_filterPaste:function(){this.options._allowFilterPaste&&this._search()},_attachFocusHandlers:function(){var e=this;e.wrapper.on(`focusin`+p,e._focusinHandler.bind(e)).on(`focusout`+p,e._focusoutHandler.bind(e)),e.filterInput&&e.filterInput.on(`focusin`+p,e._focusinHandler.bind(e)).on(`focusout`+p,e._focusoutHandler.bind(e))},_focusHandler:function(){this.wrapper.trigger(`focus`)},_focusinHandler:function(){this.wrapper.addClass(_),this._prevent=!1},_focusoutHandler:function(e){var t=this,n=window.self!==window.top;t.wrapper.find(e.relatedTarget).length>0||t._prevent||(clearTimeout(t._typingTimeout),c.mobileOS.ios&&n?t._change():t._blur(),t.wrapper.removeClass(_),t._prevent=!0,t._open=!1,t.element.trigger(`blur`))},_wrapperMousedown:function(e){let 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n&&(e=[n].concat(e)),e.slice(t).concat(e.slice(0,t))},_selectNext:function(){var e=this,t=e.dataSource.flatView(),n=t.length+(e.hasOptionLabel()?1:0),r=M(e._word,e._last),i=e.selectedIndex,a,o;i===-1?i=0:(i+=r?1:0,i=j(i,n)),t=t.toJSON?t.toJSON():t.slice(),t=e._shuffleData(t,i);for(var s=0;s<n&&(o=e._text(t[s]),!(r&&e._matchText(o,e._last)))&&!e._matchText(o,e._word);s++);s!==n&&(a=e._focus(),e._select(j(i+s,n)).done(function(){var t=function(){e.popup.visible()||e._change()};e.trigger(`select`,{dataItem:e._getElementDataItem(e._focus()),item:e._focus()})?e._select(a).done(t):t()}))},_keypress:function(e){var t=this;if(!(e.which===0||e.keyCode===n.keys.ENTER)){var r=String.fromCharCode(e.charCode||e.keyCode);t.options.ignoreCase&&(r=r.toLowerCase()),r===` `&&e.preventDefault(),t._word+=r,t._last=r,t._search()}},_popupOpen:function(e){var t=this.popup;e.isDefaultPrevented()||this._hasActionSheet()||(t.wrapper=n.wrap(t.element),t.element.closest(`.km-root`)[0]&&(t.wrapper.addClass(`km-popup km-widget`),this.wrapper.addClass(`km-widget`)))},_popup:function(){s.fn._popup.call(this),this.popup.element.addClass(`k-dropdownlist-popup`),this.popup.one(`open`,this._popupOpen.bind(this))},_postCreatePopup:function(){s.fn._postCreatePopup.call(this),this._attachFocusHandlers()},_getElementDataItem:function(e){return!e||!e[0]?null:e[0]===this.optionLabel[0]?this._optionLabelDataItem():this.listView.dataItemByIndex(this.listView.getElementIndex(e))},_click:function(t){var n=this,r=t.item||e(t.currentTarget);if(t.preventDefault(),n.trigger(`select`,{dataItem:n._getElementDataItem(r),item:r})){n.close();return}n._userTriggered=!0,n._select(r).done(function(){n._blur(),n._focusElement(n.wrapper)})},_touchEnabled:function(){return c.mobileOS&&(c.touch||c.MSPointers||c.pointers)},_focusElement:function(e){var t=l(),n=this.wrapper,r=this.filterInput,i=e===r?n:r,a=this._touchEnabled();r&&r[0]===e[0]&&a||r&&(i[0]===t||this._focusFilter)&&(this._focusFilter=!1,this._prevent=!0,this._focused=e.trigger(`focus`))},_searchByWord:function(e){if(e){var t=this;t.options.ignoreCase&&(e=e.toLowerCase()),t._select(function(n){return t._matchText(t._text(n),e)})}},_inputValue:function(){return this.text()},_search:function(){var e=this,t=e.dataSource;if(clearTimeout(e._typingTimeout),e._isFilterEnabled())e._typingTimeout=setTimeout(function(){var t=e.filterInput.val();e._prev!==t&&(e._prev=t,e.search(t),e._resizeFilterInput()),e._typingTimeout=null},e.options.delay);else{if(e._typingTimeout=setTimeout(function(){e._word=``},e.options.delay),!e.listView.bound()){t.fetch().done(function(){e._selectNext()});return}e._selectNext()}},_get:function(t){var n,r,i,a=typeof t==`function`,o=a?e():e(t);if(this.hasOptionLabel()&&(typeof 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