@progress/kendo-ui/umd/kendo.treeview.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.data.min.js`),require(`kendo.treeview.draganddrop.min.js`),require(`kendo.html.input.min.js`),require(`kendo.icons.min.js`)):typeof define==`function`&&define.amd?define([`exports`,`kendo.data.min`,`kendo.treeview.draganddrop.min`,`kendo.html.input.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.Treeview={}),e.kendo._globals.Data,e.kendo._globals.TreeviewDraganddrop,e.kendo._globals.HtmlInput,e.kendo._globals.Icons))})(this,function(e,t,n,r,i){Object.defineProperties(e,{__esModule:{value:!0},[Symbol.toStringTag]:{value:`Module`}});let a={id:`treeview`,name:`TreeView`,category:`web`,description:`The TreeView widget displays hierarchical data in a traditional tree structure,with support for interactive drag-and-drop operations.`,depends:[`data`,`html.input`,`icons`],features:[{id:`treeview-dragging`,name:`Drag & Drop`,description:`Support for drag & drop`,depends:[`treeview.draganddrop`]}]};(function(e,t){var n=window.kendo,r=n.ui,i=n.data,a=n.htmlEncode,o=n.sanitizeLink,s=e.extend,c=n.template,l=Array.isArray,u=r.Widget,d=i.HierarchicalDataSource,f=n.keys,p=`.kendoTreeView`,m=`.kendoTreeViewTemp`,h=`select`,g=`check`,_=`navigate`,v=`expand`,y=`change`,ee=`error`,b=`checked`,x=`indeterminate`,te=`collapse`,S=`dragstart`,C=`progress`,w=`drag`,T=`drop`,E=`dragend`,D=`dataBound`,O=`itemsLoaded`,k=`loadCompleted`,A=`requestEnd`,j=`click`,ne=`kendoKeydown`,M=`undefined`,re=`k-hover`,N=`k-treeview`,ie=`:visible`,P=`.k-treeview-item`,F=`k-icon`,I=`<span></span>`,L=`string`,R=`aria-checked`,z=`aria-selected`,B=`aria-disabled`,V=`aria-expanded`,H=`aria-activedescendant`,U=`aria-busy`,W=`k-disabled`,G,K,q,J,Y,X={text:`dataTextField`,url:`dataUrlField`,icon:`dataIconField`,spriteCssClass:`dataSpriteCssClassField`,imageUrl:`dataImageUrlField`,attr:`dataAttrField`,imageAttr:`dataImageAttrField`,contentAttr:`dataContentAttrField`,linkAttr:`dataLinkAttrField`},ae=function(e){return e instanceof n.jQuery||window.jQuery&&e instanceof window.jQuery},oe=function(e){return typeof HTMLElement==`object`?e instanceof HTMLElement:e&&typeof e==`object`&&e.nodeType===1&&typeof e.nodeName===L};let Z={item:`k-treeview-item`,image:`k-image`,contentText:`k-treeview-leaf-text`};function se(e){return function(t){var n=t.children(`.k-animation-container`);return n.length||(n=t),n.children(e)}}K=se(`.k-treeview-group`),q=se(`.k-treeview-group,.k-content`),J=function(e){return e.children(`span`).find(`.k-treeview-toggle > span:first`)};function Q(e){return e.find(`.k-checkbox-wrap:first input[type=checkbox]`)}function ce(e){return function(t,n){n=n.closest(P);var r=n.parent(),i;return r.parent().is(`li`)&&(i=r.parent()),this._dataSourceMove(t,r,i,function(t,r){var i=this.dataItem(n),a=i&&n.parent().children().length!==i.parent().length?i.parent().indexOf(i):n.index();return this._insert(t.data(),r,a+e)})}}Y=/k-sprite/;function le(e,t){for(var r;e&&e.nodeName.toLowerCase()!=`ul`;)r=e,e=e.nextSibling,r.nodeType==3&&(r.nodeValue=n.trim(r.nodeValue)),Y.test(r.className)?t.insertBefore(r,t.firstChild):t.appendChild(r)}function $(t){var n=t.children(`span.k-treeview-item-content`),r=t.children(`ul`),i=n.find(`.k-treeview-toggle > span`),a=t.children(`input[type=checkbox]`),o=n.children(`.k-treeview-leaf`);t.hasClass(`k-treeview`)||(n.length||(n=e(`<span />`).prependTo(t)),!i.length&&r.length?i=e(`<span class='k-treeview-toggle'>${I}</span>`).prependTo(n):(!r.length||!r.children().length)&&(i.parent().remove(),r.remove(),t.removeAttr(V)),a.length&&e(`<span class='k-checkbox-wrap' />`).appendTo(n).append(a),o.length||(o=t.children(`a`).eq(0).addClass(`k-treeview-leaf k-link`),o.length||(o=e(`<span class='k-treeview-leaf' />`)),o.appendTo(n),n.length&&le(n[0].nextSibling,o[0])))}G=n.ui.DataBoundWidget.extend({init:function(e,t){var r=this,i=!1,a=t&&!!t.dataSource,o;l(t)&&(t={dataSource:t}),t&&typeof 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t=this,n=`.k-treeview-item-content:not(.k-selected,.k-disabled)`,r=`mouseenter`;t._clickHandler=t._click.bind(t),t.wrapper.on(r+p,`.k-treeview-item-content.k-selected`,function(e){e.preventDefault()}).on(r+p,n,function(){e(this).parent().addClass(re)}).on(`mouseleave`+p,n,function(){e(this).parent().removeClass(re)}).on(j+p,n,t._clickHandler).on(`dblclick`+p,`.k-treeview-item-content:not(.k-disabled) .k-treeview-leaf`,t._toggleButtonClick.bind(t)).on(j+p,`.k-treeview-toggle .${F}`,t._toggleButtonClick.bind(t)).on(`keydown`+p,t,t._keydown.bind(t)).on(`keypress`+p,t._keypress.bind(t)).on(`focus`+p,t._focus.bind(t)).on(`blur`+p,t._blur.bind(t)).on(`mousedown`+p,`.k-treeview-item-content,.k-checkbox-wrap :checkbox,.k-treeview-toggle .${F}`,t._mousedown.bind(t)).on(`change`+p,`.k-checkbox-wrap :checkbox`,t._checkboxChange.bind(t)).on(`click`+p,`.k-request-retry`,t._retryRequest.bind(t)).on(`click`+p,`.k-treeview-item-content.k-disabled .k-link`,function(e){e.preventDefault()}).on(`click`+p,function(n){var r=e(n.target);!r.is(`:kendoFocusable`)&&!r.find(`input,select,textarea,button,object`).is(`:kendoFocusable`)&&t.focus()})},_requestStart:function(){this._progress(!0)},_syncHtmlAndDataSource:function(e,t,r){e||=this.root,t||=this.dataSource,r||=1;let i=t.view(),a=n.attr(`uid`),o=n.attr(`expanded`),s=this.options.checkboxes,c=e.children(`li`),l,u,d,f,p;for(l=0;l<c.length;l++)d=i[l],f=d.uid,u=c.eq(l),u.attr(`role`,`treeitem`).attr(a,f).attr(z,u.children(`span`).hasClass(`k-selected`)),u.css(`--kendo-treeview-level`,r),d.expanded=u.attr(o)===`true`,d.hasChildren&&u.attr(V,d.expanded),s&&(p=Q(u),d.checked=p.prop(b),p.attr(`id`,`_`+f),p.next(`.k-checkbox-label`).attr(`for`,`_`+f),u.attr(R,u.checked)),this._syncHtmlAndDataSource(u.children(`ul`),d.children,r+1)},_animation:function(){var e=this.options,t=e.animation,n=t.collapse&&`effects`in 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e.prevAll(`.k-treeview-leaf`).length>0?`after`:`before`},dragstart:function(e){return a.wrapper.attr(n.attr(`scrollable`),!1),a.trigger(S,{sourceNode:e[0]})},drag:function(e){a.trigger(w,{originalEvent:e.originalEvent,sourceNode:e.source[0],dropTarget:e.target[0],pageY:e.pageY,pageX:e.pageX,statusClass:e.status,setStatusClass:e.setStatus})},drop:function(t){var n=e(t.dropTarget).closest(`a`);return n&&n.attr(`href`)&&a._tempPreventNavigation(n),a.trigger(T,{originalEvent:t.originalEvent,sourceNode:t.source,destinationNode:t.destination,valid:t.valid,setValid:function(e){this.valid=e,t.setValid(e)},dropTarget:t.dropTarget,dropPosition:t.position})},dragend:function(e){var t=e.source,r=e.destination,i=e.position;a.wrapper.removeAttr(n.attr(`scrollable`));function o(t){a.options.checkboxes&&a.options.checkboxes.checkChildren&&a.updateIndeterminate(),a.current(t),a.element.focus(),a.trigger(E,{originalEvent:e.originalEvent,sourceNode:t&&t[0],destinationNode:r[0],dropPosition:i})}i==`over`?a.append(t,r,o):(i==`before`?t=a.insertBefore(t,r):i==`after`&&(t=a.insertAfter(t,r)),o(t))}})}else !t&&i&&(i.destroy(),this.dragging=null)},_tempPreventNavigation:function(e){e.on(j+p+m,function(t){t.preventDefault(),e.off(j+p+m)})},_hintText:function(e){return this.templates.dragClue({item:this.dataItem(e),treeview:this.options})},_templates:function(){let t=this,i=t.options,s=t._fieldAccessor.bind(t);i.template&&typeof i.template==L?i.template=c(i.template):i.template||=({item:e})=>{let n=s(`text`)(e),r=s(`contentAttr`)(e);return e.encoded!==void 0&&e.encoded===!1?`<span ${t.templates.contentCssAttributes(r)}>${n}</span>`:`<span ${t.templates.contentCssAttributes(r)}>${a(n)}</span>`},t._checkboxes(),t.templates={setAttributes:function(e){return t.templates.setDefaultClasses(Z.item,e.attr)},cssClass:function(e,t){var n=`k-treeview-item-content`;return t.enabled===!1&&(n+=` k-disabled`),t.selected&&(n+=` k-selected`),n},textClass:function(e,t){var n=`k-treeview-leaf`;return t&&(n+=` k-link`),n},checkboxClass:function(e){var t=`k-checkbox`;return e.enabled===!1&&(t+=` k-disabled`),t},toggleButtonClass:function(e){var t=`k-treeview-toggle`;return e.enabled===!1&&(t+=` k-disabled`),t},toggleIcon:function(e,i){return i.expanded===!0?r.icon(e,{icon:`chevron-down`}):r.icon(e,{icon:`chevron-${n.support.isRtl(t.element)?`left`:`right`}`})},groupAttributes:function(e){var t=``;return e.firstLevel||(t=`role='group'`),t+(e.expanded===!0?``:` ${n.attr(`style-display`)}="none"`)},groupCssClass:function(e){var t=`k-treeview-group`;return e.firstLevel&&(t+=` k-treeview-lines`),t},dragClue:e=>e.treeview.template(e),group:e=>`<ul class='${e.r.groupCssClass(e.group)}'${e.r.groupAttributes(e.group)}>`+e.renderItems(e)+`</ul>`,itemContent:e=>{let n=s(`imageUrl`)(e.item),r=s(`imageAttr`)(e.item),i=s(`spriteCssClass`)(e.item),a=s(`icon`)(e.item),o=``;return n&&(o+=`<img ${t.templates.imageCssAttributes(r)} alt='' src='${n}'>`),a&&(o+=t.templates.iconTemplate(a)),i&&(o+=`<span class='k-sprite ${i}'></span>`),o+=e.treeview.template(e),o},iconTemplate:e=>{let t=``;return e&&(t=r.icon(e)),t},itemElement:t=>{let n=t.item,r=t.r,i=s(`url`)(n),a=i?`a`:`span`,c=i?` href="`+o(i)+`"`:``,l=`<span class="${r.cssClass(t.group,n)}">`;return n.hasChildren&&(l+=`<span class='${r.toggleButtonClass(n)}'>`+r.toggleIcon(e(I),n)+`</span>`),t.treeview.checkboxes&&(l+=`<span class='k-checkbox-wrap' role='presentation'>`+t.treeview.checkboxes.template(t)+`</span>`),l+=`<${a} ${r.linkCssAttributes(n,!!i)} ${c}>`+r.itemContent(t)+`</${a}>`,l+=`</span>`,l},item:e=>{var t=e.item,r=e.r,i=`<li role='treeitem' style="--kendo-treeview-level: ${t.level?t.level()+1:1};"${n.attr(`uid`)}="${t.uid}"${r.setAttributes(t.toJSON?t.toJSON():t)} `;return e.treeview.checkboxes&&(i+=`aria-checked="${t.checked?`true`:`false`}" `),i+=`aria-selected="${t.selected?`true`:`false`}" ${t.enabled===!1?`aria-disabled="true"`:``}`,t.hasChildren&&(i+=`aria-expanded="${t.expanded?`true`:`false`}" `),i+=`data-expanded="${t.expanded?`true`:`false`}" >`+r.itemElement(e)+`</li>`,i},loading:({messages:e})=>`<div class='k-icon k-i-loading'></div> ${a(e.loading)}`,retry:({messages:e})=>`${a(e.requestFailed)} <button class='k-button k-request-retry'><span class='k-button-text'>${a(e.retry)}</span></button>`,imageCssAttributes:function(e){return t.templates.setDefaultClasses(Z.image,e)},contentCssAttributes:function(e){return t.templates.setDefaultClasses(Z.contentText,e)},linkCssAttributes:function(e,n){return t.templates.setDefaultClasses(this.textClass(e,n),s(`linkAttr`)(e))},setDefaultClasses:function(e,n){return n=n&&n.toJSON?n.toJSON():n||{},n.class?n.class+=` `+e:n.class=e,t.templates.stringifyAttributes(n)},stringifyAttributes:function(e){let t=``;for(let n in e)e.hasOwnProperty(n)&&(t+=n+`="`+e[n]+`" `);return t}}},items:function(){return this.element.find(`.k-treeview-item > span:first-child`)},setDataSource:function(e){var t=this.options;t.dataSource=e,this._dataSourceUids={},this._dataSource(),t.checkboxes&&t.checkboxes.checkChildren&&this.dataSource.one(`change`,this.updateIndeterminate.bind(this,null)),this.options.autoBind&&this.dataSource.fetch(this._attemptLoadCompleted.bind(this))},_bindDataSource:function(){var e=this;e._refreshHandler=e.refresh.bind(e),e._errorHandler=e._error.bind(e),e._loadCompletedHandler=e._loadCompleted.bind(e),e._requestEndHandler=e._dsRequestEnd.bind(e),e._loadedNodes=[],e.dataSource.bind(y,e._refreshHandler),e.dataSource.bind(ee,e._errorHandler),e.dataSource.bind(O,e._loadCompletedHandler),e.dataSource.bind(A,e._requestEndHandler)},_dsRequestEnd:function(e){var t=this;setTimeout(function(){e.type===`read`&&!t._loadCompletedFired&&t._attemptLoadCompleted()})},_loadCompleted:function(e){var t=this;t._loadedNodes=t._loadedNodes.concat(e.nodes),!t.dataSource.loading()&&t.options.loadOnDemand===!1&&(t.trigger(k,{nodes:t._loadedNodes}),t._loadedNodes=[])},_attemptLoadCompleted:function(){var e=this,t=e.dataSource.view(),n,r;if(e.options.loadOnDemand===!1){for(r=0;r<t.length;r++)if(n=t[r],n.hasChildren&&(!n.children||!n.children.data()||n.children.data().length===0))return;e._loadCompletedFired=!0,e.trigger(k,{nodes:[]})}},_unbindDataSource:function(){var e=this.dataSource;e&&(e.unbind(y,this._refreshHandler),e.unbind(C,this._progressHandler),e.unbind(ee,this._errorHandler),e.unbind(O,this._loadCompletedHandler),e.unbind(A,this._requestEndHandler))},_dataSource:function(e){var t=this,n=t.options.dataSource;function r(e){for(var t=0;t<e.length;t++)e[t]._initChildren(),e[t].children.fetch(),r(e[t].children.view())}n=l(n)?{data:n}:n,t._unbindDataSource(),n.fields||=[{field:`text`},{field:`url`},{field:`spriteCssClass`},{field:`icon`},{field:`imageUrl`}],t.dataSource=n=d.create(n),e&&(n.fetch(),r(n.view())),t._bindDataSource()},events:[S,w,T,E,D,k,v,te,h,y,_,g,ne],options:{name:`TreeView`,dataSource:{},animation:{expand:{effects:`expand:vertical`,duration:200},collapse:{duration:100}},messages:{loading:`Loading...`,requestFailed:`Request failed.`,retry:`Retry`},dragAndDrop:!1,checkboxes:!1,autoBind:!0,autoScroll:!1,loadOnDemand:!0,template:``,dataTextField:null,size:t},_accessors:function(){var e=this,t=e.options,r,i,a,o=e.element;for(r in X)i=t[X[r]],a=o.attr(n.attr(r+`-field`)),!i&&a&&(i=a),i||=r,l(i)||(i=[i]),t[X[r]]=i},_fieldAccessor:function(t){var r=this.options[X[t]],i=r.length;return(function(a){return i===0?n.getter(t)(a):e.map(r,function(e){return function(t){return n.getter(e)(t)}})[Math.min(a.level(),i-1)](a)})},setOptions:function(e){u.fn.setOptions.call(this,e),this._animation(),this._dragging(),this._accessors(),this._templates()},_trigger:function(e,t){return this.trigger(e,{node:t.closest(P)[0]})},_setChecked:function(e,t){if(!(!e||!n.isFunction(e.view)))for(var r=0,i=e.view();r<i.length;r++)i[r].enabled!==!1&&this._setCheckedValue(i[r],t),i[r].children&&this._setChecked(i[r].children,t)},_setCheckedValue:function(e,t){e[b]=t},_setIndeterminate:function(e){var t=K(e),n,r,i=!0,a;if(t.length&&(n=Q(t.children()),r=n.length,r)){if(r>1){for(a=1;a<r;a++)if(n[a].checked!=n[a-1].checked||n[a].indeterminate||n[a-1].indeterminate){i=!1;break}}else i=!n[0].indeterminate;return e.attr(R,i?n[0].checked:`mixed`),Q(e).data(x,!i).prop(x,!i).prop(b,i&&n[0].checked)}},updateIndeterminate:function(e){e||=this.wrapper;var t=K(e).children(),n,r,i;if(t.length){for(n=0;n<t.length;n++)this.updateIndeterminate(t.eq(n));if(e.is(`.k-treeview`))return;r=this._setIndeterminate(e),i=this.dataItem(e),r&&r.prop(b)?i.checked=!0:i&&delete i.checked}},_bubbleIndeterminate:function(e,t){if(e.length){t||this.updateIndeterminate(e);var n=this.parent(e),r;n.length&&(this._setIndeterminate(n),r=n.children(`span`).find(`.k-checkbox-wrap input[type=checkbox]`),this._skip=!0,r.prop(x)===!1?this.dataItem(n).set(b,r.prop(b)):this.dataItem(n).set(b,!1),this._skip=!1,this._bubbleIndeterminate(n,!0))}},_checkboxChange:function(t){var n=this,r=e(t.target),i=r.prop(b),a=r.closest(P),o=this.dataItem(a);this._preventChange||(o.checked!=i&&(o.set(b,i),a.attr(R,i),this._trigger(g,a)),r.is(`:focus`)&&(n._trigger(_,a),n.focus()))},_toggleButtonClick:function(t){var n=e(t.currentTarget).closest(P);n.is(`[aria-disabled='true']`)||(this.toggle(n),t.stopPropagation())},_mousedown:function(t){var r=this,i=e(t.currentTarget),a=e(t.currentTarget).closest(P),o=n.support.browser;a.is(`[aria-disabled='true']`)||((o.msie||o.edge)&&i.is(`:checkbox`)&&(i.prop(x)?(r._preventChange=!1,i.prop(b,!i.prop(b)),i.trigger(y),i.on(j+p,function(e){e.preventDefault()}),r._preventChange=!0):(i.off(j+p),r._preventChange=!1)),r._clickTarget=a,r.current(a))},_focusable:function(e){return e&&e.length&&e.is(`:visible`)&&!e.children(`span`).hasClass(W)},_focus:function(){var t=this.select(),r=this._clickTarget;n.support.touch||(r&&r.length&&(t=r),this._focusable(t)||(t=this.current()),this._focusable(t)||(t=this._nextVisible(e())),this.current(t))},focus:function(){var e=this.wrapper,t=e[0],r=[],i=[],a=document.documentElement,o;do 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