diff --git a/dist/sl-vue-tree.d.ts b/dist/sl-vue-tree.d.ts
index 7704f57..65837fe 100644
--- a/dist/sl-vue-tree.d.ts
+++ b/dist/sl-vue-tree.d.ts
@@ -45,9 +45,11 @@ export default class SlVueTree<TDataType> extends Vue {
     getLastNode(): ISlTreeNode<TDataType>;
     getNextNode(path: number[], filter?: (node: ISlTreeNode<TDataType>) => boolean): ISlTreeNode<TDataType>;
     getPrevNode(path: number[], filter?: (node: ISlTreeNode<TDataType>) => boolean): ISlTreeNode<TDataType>;
-    updateNode(nodeToUpdate: ISlTreeNode<TDataType>, patch: Partial<ISlTreeNodeModel<TDataType>>): void;
+    updateNode(path: number[], patch: Partial<ISlTreeNodeModel<TDataType>>): void;
     getSelected(): ISlTreeNode<TDataType>[];
     traverse(cb: (node: ISlTreeNode<TDataType>, nodeModel: ISlTreeNodeModel<TDataType>, siblings: ISlTreeNodeModel<TDataType>[]) => boolean | void, nodeModels?: ISlTreeNodeModel<TDataType>[], parentPath?: number[]): ISlTreeNode<TDataType>[] | boolean;
     getNodeEl(path: number[]): HTMLElement;
     select(path: number[], addToSelection?: boolean): ISlTreeNode<TDataType>;
+    remove(paths: number[][]): void
+    insert(cursorPosition: ICursorPosition<TDataType>, nodeModel:ISlTreeNodeModel<TDataType>): void
 }
diff --git a/dist/sl-vue-tree.js b/dist/sl-vue-tree.js
index 80f72e8..e70cf3f 100644
--- a/dist/sl-vue-tree.js
+++ b/dist/sl-vue-tree.js
@@ -1,2 +1,2 @@
-!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.SlVueTree=t():e.SlVueTree=t()}(window,function(){return function(e){var t={};function s(o){if(t[o])return t[o].exports;var i=t[o]={i:o,l:!1,exports:{}};return e[o].call(i.exports,i,i.exports,s),i.l=!0,i.exports}return s.m=e,s.c=t,s.d=function(e,t,o){s.o(e,t)||Object.defineProperty(e,t,{configurable:!1,enumerable:!0,get:o})},s.r=function(e){Object.defineProperty(e,"__esModule",{value:!0})},s.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return s.d(t,"a",t),t},s.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},s.p="",s(s.s=0)}([function(e,t,s){"use strict";s.r(t);var o={name:"sl-vue-tree",props:{value:{type:Array,default:()=>[]},edgeSize:{type:Number,default:3},showBranches:{type:Boolean,default:!1},level:{type:Number,default:0},parentInd:{type:Number},allowMultiselect:{type:Boolean,default:!0},allowToggleBranch:{type:Boolean,default:!0},multiselectKey:{type:[String,Array],default:function(){return["ctrlKey","metaKey"]},validator:function(e){let t=["ctrlKey","metaKey","altKey"],s=Array.isArray(e)?e:[e];return!!(s=s.filter(e=>-1!==t.indexOf(e))).length}},scrollAreaHeight:{type:Number,default:70},maxScrollSpeed:{type:Number,default:20}},data(){return{rootCursorPosition:null,scrollIntervalId:0,scrollSpeed:0,lastSelectedNode:null,mouseIsDown:!1,isDragging:!1,lastMousePos:{x:0,y:0},preventDrag:!1,currentValue:this.value}},mounted(){this.isRoot&&document.addEventListener("mouseup",this.onDocumentMouseupHandler)},beforeDestroy(){document.removeEventListener("mouseup",this.onDocumentMouseupHandler)},watch:{value:function(e){this.currentValue=e}},computed:{cursorPosition(){return this.isRoot?this.rootCursorPosition:this.getParent().cursorPosition},nodes(){if(this.isRoot){const e=this.copy(this.currentValue);return this.getNodes(e)}return this.getParent().nodes[this.parentInd].children},gaps(){const e=[];let t=this.level-1;for(this.showBranches||t++;t-- >0;)e.push(t);return e},isRoot(){return!this.level},selectionSize(){return this.getSelected().length},dragSize(){return this.getDraggable().length}},methods:{setCursorPosition(e){this.isRoot?this.rootCursorPosition=e:this.getParent().setCursorPosition(e)},getNodes(e,t=[],s=!0){return e.map((o,i)=>{const r=t.concat(i);return this.getNode(r,o,e,s)})},getNode(e,t=null,s=null,o=null){const i=e.slice(-1)[0];if(s=s||this.getNodeSiblings(this.currentValue,e),t=t||s&&s[i]||null,null==o&&(o=this.isVisible(e)),!t)return null;const r=void 0==t.isExpanded||!!t.isExpanded,n=void 0==t.isDraggable||!!t.isDraggable,l=void 0==t.isSelectable||!!t.isSelectable;return{title:t.title,isLeaf:!!t.isLeaf,children:t.children?this.getNodes(t.children,e,r):[],isSelected:!!t.isSelected,isExpanded:r,isVisible:o,isDraggable:n,isSelectable:l,data:void 0!==t.data?t.data:{},path:e,pathStr:JSON.stringify(e),level:e.length,ind:i,isFirstChild:0==i,isLastChild:i===s.length-1}},isVisible(e){if(e.length<2)return!0;let t=this.currentValue;for(let s=0;s<e.length-1;s++){let o=t[e[s]];if(!(void 0==o.isExpanded||!!o.isExpanded))return!1;t=o.children}return!0},emitInput(e){this.currentValue=e,this.getRoot().$emit("input",e)},emitSelect(e,t){this.getRoot().$emit("select",e,t)},emitBeforeDrop(e,t,s){this.getRoot().$emit("beforedrop",e,t,s)},emitDrop(e,t,s){this.getRoot().$emit("drop",e,t,s)},emitToggle(e,t){this.getRoot().$emit("toggle",e,t)},emitNodeClick(e,t){this.getRoot().$emit("nodeclick",e,t)},emitNodeDblclick(e,t){this.getRoot().$emit("nodedblclick",e,t)},emitNodeContextmenu(e,t){this.getRoot().$emit("nodecontextmenu",e,t)},onExternalDragoverHandler(e,t){t.preventDefault();const s=this.getRoot(),o=s.getCursorPositionFromCoords(t.clientX,t.clientY);s.setCursorPosition(o),s.$emit("externaldragover",o,t)},onExternalDropHandler(e,t){const s=this.getRoot(),o=s.getCursorPositionFromCoords(t.clientX,t.clientY);s.$emit("externaldrop",o,t),this.setCursorPosition(null)},select(e,t=!1,s=null){const o=Array.isArray(this.multiselectKey)?this.multiselectKey:[this.multiselectKey],i=s&&!!o.find(e=>s[e]);t=(i||t)&&this.allowMultiselect;const r=this.getNode(e);if(!r)return null;const n=this.copy(this.currentValue),l=this.allowMultiselect&&s&&s.shiftKey&&this.lastSelectedNode,a=[];let u=!1;return this.traverse((e,s)=>{l?(e.pathStr!==r.pathStr&&e.pathStr!==this.lastSelectedNode.pathStr||(s.isSelected=e.isSelectable,u=!u),u&&(s.isSelected=e.isSelectable)):e.pathStr===r.pathStr?s.isSelected=e.isSelectable:t||s.isSelected&&(s.isSelected=!1),s.isSelected&&a.push(e)},n),this.lastSelectedNode=r,this.emitInput(n),this.emitSelect(a,s),r},onMousemoveHandler(e){if(!this.isRoot)return void this.getRoot().onMousemoveHandler(e);if(this.preventDrag)return;const t=this.isDragging,s=this.isDragging||this.mouseIsDown&&(this.lastMousePos.x!==e.clientX||this.lastMousePos.y!==e.clientY),o=!1===t&&!0===s;if(this.lastMousePos={x:e.clientX,y:e.clientY},!s)return;const i=this.getRoot().$el,r=i.getBoundingClientRect(),n=this.$refs.dragInfo,l=e.clientY-r.top+i.scrollTop-(0|n.style.marginBottom),a=e.clientX-r.left;n.style.top=l+"px",n.style.left=a+"px";const u=this.getCursorPositionFromCoords(e.clientX,e.clientY),d=u.node,c=u.placement;if(o&&!d.isSelected&&this.select(d.path,!1,e),!this.getDraggable().length)return void(this.preventDrag=!0);this.isDragging=s,this.setCursorPosition({node:d,placement:c});const h=r.bottom-this.scrollAreaHeight,g=(e.clientY-h)/(r.bottom-h),p=r.top+this.scrollAreaHeight,f=(p-e.clientY)/(p-r.top);g>0?this.startScroll(g):f>0?this.startScroll(-f):this.stopScroll()},getCursorPositionFromCoords(e,t){const s=document.elementFromPoint(e,t),o=s.getAttribute("path")?s:this.getClosetElementWithPath(s);let i,r;if(o){if(!o)return;i=this.getNode(JSON.parse(o.getAttribute("path")));const e=o.offsetHeight,s=this.edgeSize,n=t-o.getBoundingClientRect().top;r=i.isLeaf?n>=e/2?"after":"before":n<=s?"before":n>=e-s?"after":"inside"}else{const e=this.getRoot().$el.getBoundingClientRect();t>e.top+e.height/2?(r="after",i=this.getLastNode()):(r="before",i=this.getFirstNode())}return{node:i,placement:r}},getClosetElementWithPath(e){return e?e.getAttribute("path")?e:this.getClosetElementWithPath(e.parentElement):null},onMouseleaveHandler(e){if(!this.isRoot||!this.isDragging)return;const t=this.getRoot().$el.getBoundingClientRect();e.clientY>=t.bottom?this.setCursorPosition({node:this.nodes.slice(-1)[0],placement:"after"}):e.clientY<t.top&&this.setCursorPosition({node:this.getFirstNode(),placement:"before"})},getNodeEl(e){this.getRoot().$el.querySelector(`[path="${JSON.stringify(e)}"]`)},getLastNode(){let e=null;return this.traverse(t=>{e=t}),e},getFirstNode(){return this.getNode([0])},getNextNode(e,t=null){let s=null;return this.traverse(o=>{if(!(this.comparePaths(o.path,e)<1))return!t||t(o)?(s=o,!1):void 0}),s},getPrevNode(e,t){let s=[];this.traverse(t=>{if(this.comparePaths(t.path,e)>=0)return!1;s.push(t)});let o=s.length;for(;o--;){const e=s[o];if(!t||t(e))return e}return null},comparePaths(e,t){for(let s=0;s<e.length;s++){if(void 0==t[s])return 1;if(e[s]>t[s])return 1;if(e[s]<t[s])return-1}return void 0==t[e.length]?0:-1},onNodeMousedownHandler(e,t){0===e.button&&(this.isRoot?this.mouseIsDown=!0:this.getRoot().onNodeMousedownHandler(e,t))},startScroll(e){const t=this.getRoot().$el;this.scrollSpeed!==e&&(this.scrollIntervalId&&this.stopScroll(),this.scrollSpeed=e,this.scrollIntervalId=setInterval(()=>{t.scrollTop+=this.maxScrollSpeed*e},20))},stopScroll(){clearInterval(this.scrollIntervalId),this.scrollIntervalId=0,this.scrollSpeed=0},onDocumentMouseupHandler(e){this.isDragging&&this.onNodeMouseupHandler(e)},onNodeMouseupHandler(e,t=null){if(0!==e.button)return;if(!this.isRoot)return void this.getRoot().onNodeMouseupHandler(e,t);if(this.mouseIsDown=!1,this.isDragging||!t||this.preventDrag||this.select(t.path,!1,e),this.preventDrag=!1,!this.cursorPosition)return void this.stopDrag();const s=this.getDraggable();for(let e of s){if(e.pathStr==this.cursorPosition.node.pathStr)return void this.stopDrag();if(this.checkNodeIsParent(e,this.cursorPosition.node))return void this.stopDrag()}const o=this.copy(this.currentValue),i=[];for(let e of s){const t=this.getNodeSiblings(o,e.path)[e.ind];i.push(t)}let r=!1;if(this.emitBeforeDrop(s,this.cursorPosition,()=>r=!0),r)return void this.stopDrag();const n=[];for(let e of i)n.push(this.copy(e)),e._markToDelete=!0;this.insertModels(this.cursorPosition,n,o),this.traverseModels((e,t,s)=>{e._markToDelete&&t.splice(s,1)},o),this.lastSelectedNode=null,this.emitInput(o),this.emitDrop(s,this.cursorPosition,e),this.stopDrag()},onToggleHandler(e,t){this.allowToggleBranch&&(this.updateNode(t.path,{isExpanded:!t.isExpanded}),this.emitToggle(t,e),e.stopPropagation())},stopDrag(){this.isDragging=!1,this.mouseIsDown=!1,this.setCursorPosition(null),this.stopScroll()},getParent(){return this.$parent},getRoot(){return this.isRoot?this:this.getParent().getRoot()},getNodeSiblings(e,t){return 1===t.length?e:this.getNodeSiblings(e[t[0]].children,t.slice(1))},updateNode(e,t){if(!this.isRoot)return void this.getParent().updateNode(e,t);const s=JSON.stringify(e),o=this.copy(this.currentValue);this.traverse((e,o)=>{e.pathStr===s&&Object.assign(o,t)},o),this.emitInput(o)},getSelected(){const e=[];return this.traverse(t=>{t.isSelected&&e.push(t)}),e},getDraggable(){const e=[];return this.traverse(t=>{t.isSelected&&t.isDraggable&&e.push(t)}),e},traverse(e,t=null,s=[]){t||(t=this.currentValue);let o=!1;const i=[];for(let r=0;r<t.length;r++){const n=t[r],l=s.concat(r),a=this.getNode(l,n,t);if(o=!1===e(a,n,t),i.push(a),o)break;if(n.children&&(o=!1===this.traverse(e,n.children,l)))break}return!o&&i},traverseModels(e,t){let s=t.length;for(;s--;){const o=t[s];o.children&&this.traverseModels(e,o.children),e(o,t,s)}return t},remove(e){const t=e.map(e=>JSON.stringify(e)),s=this.copy(this.currentValue);this.traverse((e,s,o)=>{for(const o of t)e.pathStr===o&&(s._markToDelete=!0)},s),this.traverseModels((e,t,s)=>{e._markToDelete&&t.splice(s,1)},s),this.emitInput(s)},insertModels(e,t,s){const o=e.node,i=this.getNodeSiblings(s,o.path),r=i[o.ind];if("inside"===e.placement)r.children=r.children||[],r.children.unshift(...t);else{const s="before"===e.placement?o.ind:o.ind+1;i.splice(s,0,...t)}},insert(e,t){const s=Array.isArray(t)?t:[t],o=this.copy(this.currentValue);this.insertModels(e,s,o),this.emitInput(o)},checkNodeIsParent(e,t){const s=t.path;return JSON.stringify(s.slice(0,e.path.length))==e.pathStr},copy:e=>JSON.parse(JSON.stringify(e))}},i=function(){var e=this,t=e.$createElement,s=e._self._c||t;return s("div",{staticClass:"sl-vue-tree",class:{"sl-vue-tree-root":e.isRoot},on:{mousemove:e.onMousemoveHandler,mouseleave:e.onMouseleaveHandler,dragend:function(t){e.onDragendHandler(null,t)}}},[s("div",{ref:"nodes",staticClass:"sl-vue-tree-nodes-list"},[e._l(e.nodes,function(t,o){return s("div",{staticClass:"sl-vue-tree-node",class:{"sl-vue-tree-selected":t.isSelected}},[s("div",{staticClass:"sl-vue-tree-cursor sl-vue-tree-cursor_before",style:{visibility:e.cursorPosition&&e.cursorPosition.node.pathStr===t.pathStr&&"before"===e.cursorPosition.placement?"visible":"hidden"},on:{dragover:function(e){e.preventDefault()}}}),e._v(" "),s("div",{staticClass:"sl-vue-tree-node-item",class:{"sl-vue-tree-cursor-hover":e.cursorPosition&&e.cursorPosition.node.pathStr===t.pathStr,"sl-vue-tree-cursor-inside":e.cursorPosition&&"inside"===e.cursorPosition.placement&&e.cursorPosition.node.pathStr===t.pathStr,"sl-vue-tree-node-is-leaf":t.isLeaf,"sl-vue-tree-node-is-folder":!t.isLeaf},attrs:{path:t.pathStr},on:{mousedown:function(s){e.onNodeMousedownHandler(s,t)},mouseup:function(s){e.onNodeMouseupHandler(s,t)},contextmenu:function(s){e.emitNodeContextmenu(t,s)},dblclick:function(s){e.emitNodeDblclick(t,s)},click:function(s){e.emitNodeClick(t,s)},dragover:function(s){e.onExternalDragoverHandler(t,s)},drop:function(s){e.onExternalDropHandler(t,s)}}},[e._l(e.gaps,function(e){return s("div",{staticClass:"sl-vue-tree-gap"})}),e._v(" "),e.level&&e.showBranches?s("div",{staticClass:"sl-vue-tree-branch"},[e._t("branch",[t.isLastChild?e._e():s("span",[e._v("\n            "+e._s(String.fromCharCode(9500))+e._s(String.fromCharCode(9472))+" \n          ")]),e._v(" "),t.isLastChild?s("span",[e._v("\n            "+e._s(String.fromCharCode(9492))+e._s(String.fromCharCode(9472))+" \n          ")]):e._e()],{node:t})],2):e._e(),e._v(" "),s("div",{staticClass:"sl-vue-tree-title"},[t.isLeaf?e._e():s("span",{staticClass:"sl-vue-tree-toggle",on:{click:function(s){e.onToggleHandler(s,t)}}},[e._t("toggle",[s("span",[e._v("\n             "+e._s(t.isLeaf?"":t.isExpanded?"-":"+")+"\n            ")])],{node:t})],2),e._v(" "),e._t("title",[e._v(e._s(t.title))],{node:t}),e._v(" "),!t.isLeaf&&0==t.children.length&&t.isExpanded?e._t("empty-node",null,{node:t}):e._e()],2),e._v(" "),s("div",{staticClass:"sl-vue-tree-sidebar"},[e._t("sidebar",null,{node:t})],2)],2),e._v(" "),t.children&&t.children.length&&t.isExpanded?s("sl-vue-tree",{attrs:{value:t.children,level:t.level,parentInd:o,allowMultiselect:e.allowMultiselect,allowToggleBranch:e.allowToggleBranch,edgeSize:e.edgeSize,showBranches:e.showBranches},on:{dragover:function(e){e.preventDefault()}},scopedSlots:e._u([{key:"title",fn:function(t){var s=t.node;return[e._t("title",[e._v(e._s(s.title))],{node:s})]}},{key:"toggle",fn:function(t){var o=t.node;return[e._t("toggle",[s("span",[e._v("\n             "+e._s(o.isLeaf?"":o.isExpanded?"-":"+")+"\n          ")])],{node:o})]}},{key:"sidebar",fn:function(t){var s=t.node;return[e._t("sidebar",null,{node:s})]}},{key:"empty-node",fn:function(t){var s=t.node;return[!s.isLeaf&&0==s.children.length&&s.isExpanded?e._t("empty-node",null,{node:s}):e._e()]}}])}):e._e(),e._v(" "),s("div",{staticClass:"sl-vue-tree-cursor sl-vue-tree-cursor_after",style:{visibility:e.cursorPosition&&e.cursorPosition.node.pathStr===t.pathStr&&"after"===e.cursorPosition.placement?"visible":"hidden"},on:{dragover:function(e){e.preventDefault()}}})],1)}),e._v(" "),e.isRoot?s("div",{directives:[{name:"show",rawName:"v-show",value:e.isDragging,expression:"isDragging"}],ref:"dragInfo",staticClass:"sl-vue-tree-drag-info"},[e._t("draginfo",[e._v("\n        Items: "+e._s(e.selectionSize)+"\n      ")])],2):e._e()],2)])};i._withStripped=!0;var r=function(e,t,s,o,i,r,n,l){var a=typeof(e=e||{}).default;"object"!==a&&"function"!==a||(e=e.default);var u,d="function"==typeof e?e.options:e;if(t&&(d.render=t,d.staticRenderFns=s,d._compiled=!0),o&&(d.functional=!0),r&&(d._scopeId=r),n?(u=function(e){(e=e||this.$vnode&&this.$vnode.ssrContext||this.parent&&this.parent.$vnode&&this.parent.$vnode.ssrContext)||"undefined"==typeof __VUE_SSR_CONTEXT__||(e=__VUE_SSR_CONTEXT__),i&&i.call(this,e),e&&e._registeredComponents&&e._registeredComponents.add(n)},d._ssrRegister=u):i&&(u=l?function(){i.call(this,this.$root.$options.shadowRoot)}:i),u)if(d.functional){d._injectStyles=u;var c=d.render;d.render=function(e,t){return u.call(t),c(e,t)}}else{var h=d.beforeCreate;d.beforeCreate=h?[].concat(h,u):[u]}return{exports:e,options:d}}(o,i,[],!1,null,null,null);r.options.__file="src\\sl-vue-tree.vue";t.default=r.exports}]).default});
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.SlVueTree=t():e.SlVueTree=t()}(window,(function(){return function(e){var t={};function n(r){if(t[r])return t[r].exports;var i=t[r]={i:r,l:!1,exports:{}};return e[r].call(i.exports,i,i.exports,n),i.l=!0,i.exports}return n.m=e,n.c=t,n.d=function(e,t,r){n.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:r})},n.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},n.t=function(e,t){if(1&t&&(e=n(e)),8&t)return e;if(4&t&&"object"==typeof e&&e&&e.__esModule)return e;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:e}),2&t&&"string"!=typeof e)for(var i in e)n.d(r,i,function(t){return e[t]}.bind(null,i));return r},n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,"a",t),t},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},n.p="",n(n.s=0)}([function(e,t,n){"use strict";function r(e){return function(e){if(Array.isArray(e)){for(var t=0,n=new Array(e.length);t<e.length;t++)n[t]=e[t];return n}}(e)||function(e){if(Symbol.iterator in Object(e)||"[object Arguments]"===Object.prototype.toString.call(e))return Array.from(e)}(e)||function(){throw new TypeError("Invalid attempt to spread non-iterable instance")}()}n.r(t);var i={name:"sl-vue-tree",props:{value:{type:Array,default:function(){return[]}},edgeSize:{type:Number,default:3},showBranches:{type:Boolean,default:!1},level:{type:Number,default:0},parentInd:{type:Number},allowMultiselect:{type:Boolean,default:!0},allowToggleBranch:{type:Boolean,default:!0},multiselectKey:{type:[String,Array],default:function(){return["ctrlKey","metaKey"]},validator:function(e){var t=["ctrlKey","metaKey","altKey"],n=Array.isArray(e)?e:[e];return!!(n=n.filter((function(e){return-1!==t.indexOf(e)}))).length}},scrollAreaHeight:{type:Number,default:70},maxScrollSpeed:{type:Number,default:20}},data:function(){return{rootCursorPosition:null,scrollIntervalId:0,scrollSpeed:0,lastSelectedNode:null,mouseIsDown:!1,isDragging:!1,lastMousePos:{x:0,y:0},preventDrag:!1,currentValue:this.value}},mounted:function(){this.isRoot&&document.addEventListener("mouseup",this.onDocumentMouseupHandler)},beforeDestroy:function(){document.removeEventListener("mouseup",this.onDocumentMouseupHandler)},watch:{value:function(e){this.currentValue=e}},computed:{cursorPosition:function(){return this.isRoot?this.rootCursorPosition:this.getParent().cursorPosition},depth:function(){return this.gaps.length},nodes:function(){if(this.isRoot){var e=this.copy(this.currentValue);return this.getNodes(e)}return this.getParent().nodes[this.parentInd].children},gaps:function(){var e=[],t=this.level-1;for(this.showBranches||t++;t-- >0;)e.push(t);return e},isRoot:function(){return!this.level},selectionSize:function(){return this.getSelected().length},dragSize:function(){return this.getDraggable().length}},methods:{setCursorPosition:function(e){this.isRoot?this.rootCursorPosition=e:this.getParent().setCursorPosition(e)},getNodes:function(e){var t=this,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:[],r=!(arguments.length>2&&void 0!==arguments[2])||arguments[2];return e.map((function(i,o){var s=n.concat(o);return t.getNode(s,i,e,r)}))},getNode:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:null,n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:null,r=arguments.length>3&&void 0!==arguments[3]?arguments[3]:null,i=e.slice(-1)[0];if(n=n||this.getNodeSiblings(this.currentValue,e),t=t||n&&n[i]||null,null==r&&(r=this.isVisible(e)),!t)return null;var 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this.traverse((function(e,r){a?(e.pathStr!==s.pathStr&&e.pathStr!==t.lastSelectedNode.pathStr||(r.isSelected=e.isSelectable,c=!c),c&&(r.isSelected=e.isSelectable)):e.pathStr===s.pathStr?r.isSelected=e.isSelectable:n||r.isSelected&&(r.isSelected=!1),r.isSelected&&u.push(e)}),l),this.lastSelectedNode=s,this.emitInput(l),this.emitSelect(u,r),s},onMousemoveHandler:function(e){if(this.isRoot){if(!this.preventDrag){var t=this.isDragging,n=this.isDragging||this.mouseIsDown&&(this.lastMousePos.x!==e.clientX||this.lastMousePos.y!==e.clientY),r=!1===t&&!0===n;if(this.lastMousePos={x:e.clientX,y:e.clientY},n){var i=this.getRoot().$el,o=i.getBoundingClientRect(),s=this.$refs.dragInfo,l=e.clientY-o.top+i.scrollTop-(0|s.style.marginBottom),a=e.clientX-o.left;s.style.top=l+"px",s.style.left=a+"px";var u=this.getCursorPositionFromCoords(e.clientX,e.clientY),c=u.node,d=u.placement;if(r&&!c.isSelected&&this.select(c.path,!1,e),this.getDraggable().length){this.isDragging=n,this.setCursorPosition({node:c,placement:d});var h=o.bottom-this.scrollAreaHeight,f=(e.clientY-h)/(o.bottom-h),g=o.top+this.scrollAreaHeight,p=(g-e.clientY)/(g-o.top);f>0?this.startScroll(f):p>0?this.startScroll(-p):this.stopScroll()}else this.preventDrag=!0}}}else this.getRoot().onMousemoveHandler(e)},getCursorPositionFromCoords:function(e,t){var n,r,i=document.elementFromPoint(e,t),o=i.getAttribute("path")?i:this.getClosetElementWithPath(i);if(o){if(!o)return;n=this.getNode(JSON.parse(o.getAttribute("path")));var s=o.offsetHeight,l=this.edgeSize,a=t-o.getBoundingClientRect().top;r=n.isLeaf?a>=s/2?"after":"before":a<=l?"before":a>=s-l?"after":"inside"}else{var u=this.getRoot().$el.getBoundingClientRect();t>u.top+u.height/2?(r="after",n=this.getLastNode()):(r="before",n=this.getFirstNode())}return{node:n,placement:r}},getClosetElementWithPath:function(e){return e?e.getAttribute("path")?e:this.getClosetElementWithPath(e.parentElement):null},onMouseleaveHandler:function(e){if(this.isRoot&&this.isDragging){var t=this.getRoot().$el.getBoundingClientRect();e.clientY>=t.bottom?this.setCursorPosition({node:this.nodes.slice(-1)[0],placement:"after"}):e.clientY<t.top&&this.setCursorPosition({node:this.getFirstNode(),placement:"before"})}},getNodeEl:function(e){this.getRoot().$el.querySelector('[path="'.concat(JSON.stringify(e),'"]'))},getLastNode:function(){var e=null;return this.traverse((function(t){e=t})),e},getFirstNode:function(){return this.getNode([0])},getNextNode:function(e){var t=this,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:null,r=null;return this.traverse((function(i){if(!(t.comparePaths(i.path,e)<1))return!n||n(i)?(r=i,!1):void 0})),r},getPrevNode:function(e,t){var n=this,r=[];this.traverse((function(t){if(n.comparePaths(t.path,e)>=0)return!1;r.push(t)}));for(var i=r.length;i--;){var o=r[i];if(!t||t(o))return o}return null},comparePaths:function(e,t){for(var n=0;n<e.length;n++){if(null==t[n])return 1;if(e[n]>t[n])return 1;if(e[n]<t[n])return-1}return null==t[e.length]?0:-1},onNodeMousedownHandler:function(e,t){0===e.button&&(this.isRoot?this.mouseIsDown=!0:this.getRoot().onNodeMousedownHandler(e,t))},startScroll:function(e){var t=this,n=this.getRoot().$el;this.scrollSpeed!==e&&(this.scrollIntervalId&&this.stopScroll(),this.scrollSpeed=e,this.scrollIntervalId=setInterval((function(){n.scrollTop+=t.maxScrollSpeed*e}),20))},stopScroll:function(){clearInterval(this.scrollIntervalId),this.scrollIntervalId=0,this.scrollSpeed=0},onDocumentMouseupHandler:function(e){this.isDragging&&this.onNodeMouseupHandler(e)},onNodeMouseupHandler:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:null;if(0===e.button)if(this.isRoot)if(this.mouseIsDown=!1,this.isDragging||!t||this.preventDrag||this.select(t.path,!1,e),this.preventDrag=!1,this.cursorPosition){var n=this.getDraggable(),r=!0,i=!1,o=void 0;try{for(var s,l=n[Symbol.iterator]();!(r=(s=l.next()).done);r=!0){var a=s.value;if(a.pathStr==this.cursorPosition.node.pathStr)return void this.stopDrag();if(this.checkNodeIsParent(a,this.cursorPosition.node))return void this.stopDrag()}}catch(e){i=!0,o=e}finally{try{r||null==l.return||l.return()}finally{if(i)throw o}}var u=this.copy(this.currentValue),c=[],d=!0,h=!1,f=void 0;try{for(var g,p=n[Symbol.iterator]();!(d=(g=p.next()).done);d=!0){var v=g.value,m=this.getNodeSiblings(u,v.path),S=m[v.ind];c.push(S)}}catch(e){h=!0,f=e}finally{try{d||null==p.return||p.return()}finally{if(h)throw f}}var y=!1;if(this.emitBeforeDrop(n,this.cursorPosition,(function(){return y=!0})),y)this.stopDrag();else{for(var b=[],_=0;_<c.length;_++){var C=c[_];b.push(this.copy(C)),C._markToDelete=!0}this.insertModels(this.cursorPosition,b,u),this.traverseModels((function(e,t,n){e._markToDelete&&t.splice(n,1)}),u),this.lastSelectedNode=null,this.emitInput(u),this.emitDrop(n,this.cursorPosition,e),this.stopDrag()}}else this.stopDrag();else 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i=e.node,o=this.getNodeSiblings(n,i.path),s=o[i.ind];if("inside"===e.placement){var l;s.children=s.children||[],(l=s.children).unshift.apply(l,r(t))}else{var a="before"===e.placement?i.ind:i.ind+1;o.splice.apply(o,[a,0].concat(r(t)))}},insert:function(e,t){var n=Array.isArray(t)?t:[t],r=this.copy(this.currentValue);this.insertModels(e,n,r),this.emitInput(r)},checkNodeIsParent:function(e,t){var n=t.path;return JSON.stringify(n.slice(0,e.path.length))==e.pathStr},copy:function(e){return JSON.parse(JSON.stringify(e))}}},o=function(){var e=this,t=e.$createElement,n=e._self._c||t;return n("div",{staticClass:"sl-vue-tree",class:{"sl-vue-tree-root":e.isRoot},on:{mousemove:e.onMousemoveHandler,mouseleave:e.onMouseleaveHandler,dragend:function(t){e.onDragendHandler(null,t)}}},[n("div",{ref:"nodes",staticClass:"sl-vue-tree-nodes-list"},[e._l(e.nodes,(function(t,r){return n("div",{staticClass:"sl-vue-tree-node",class:{"sl-vue-tree-selected":t.isSelected}},[n("div",{staticClass:"sl-vue-tree-cursor 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n("div",{staticClass:"sl-vue-tree-gap"})})),e._v(" "),e.level&&e.showBranches?n("div",{staticClass:"sl-vue-tree-branch"},[e._t("branch",[t.isLastChild?e._e():n("span",[e._v("\n            "+e._s(String.fromCharCode(9500))+e._s(String.fromCharCode(9472))+" \n          ")]),e._v(" "),t.isLastChild?n("span",[e._v("\n            "+e._s(String.fromCharCode(9492))+e._s(String.fromCharCode(9472))+" \n          ")]):e._e()],{node:t})],2):e._e(),e._v(" "),n("div",{staticClass:"sl-vue-tree-title"},[t.isLeaf?e._e():n("span",{staticClass:"sl-vue-tree-toggle",on:{click:function(n){e.onToggleHandler(n,t)}}},[e._t("toggle",[n("span",[e._v("\n             "+e._s(t.isLeaf?"":t.isExpanded?"-":"+")+"\n            ")])],{node:t})],2),e._v(" "),e._t("title",[e._v(e._s(t.title))],{node:t}),e._v(" "),!t.isLeaf&&0==t.children.length&&t.isExpanded?e._t("empty-node",null,{node:t}):e._e()],2),e._v(" "),n("div",{staticClass:"sl-vue-tree-sidebar"},[e._t("sidebar",null,{node:t})],2)],2),e._v(" "),t.children&&t.children.length&&t.isExpanded?n("sl-vue-tree",{attrs:{value:t.children,level:t.level,parentInd:r,allowMultiselect:e.allowMultiselect,allowToggleBranch:e.allowToggleBranch,edgeSize:e.edgeSize,showBranches:e.showBranches},on:{dragover:function(e){e.preventDefault()}},scopedSlots:e._u([{key:"title",fn:function(t){var n=t.node;return[e._t("title",[e._v(e._s(n.title))],{node:n})]}},{key:"toggle",fn:function(t){var r=t.node;return[e._t("toggle",[n("span",[e._v("\n             "+e._s(r.isLeaf?"":r.isExpanded?"-":"+")+"\n          ")])],{node:r})]}},{key:"sidebar",fn:function(t){var n=t.node;return[e._t("sidebar",null,{node:n})]}},{key:"empty-node",fn:function(t){var n=t.node;return[!n.isLeaf&&0==n.children.length&&n.isExpanded?e._t("empty-node",null,{node:n}):e._e()]}}])}):e._e(),e._v(" "),n("div",{staticClass:"sl-vue-tree-cursor sl-vue-tree-cursor_after",style:{visibility:e.cursorPosition&&e.cursorPosition.node.pathStr===t.pathStr&&"after"===e.cursorPosition.placement?"visible":"hidden","--depth":e.depth},on:{dragover:function(e){e.preventDefault()}}})],1)})),e._v(" "),e.isRoot?n("div",{directives:[{name:"show",rawName:"v-show",value:e.isDragging,expression:"isDragging"}],ref:"dragInfo",staticClass:"sl-vue-tree-drag-info"},[e._t("draginfo",[e._v("\n        Items: "+e._s(e.selectionSize)+"\n      ")])],2):e._e()],2)])};o._withStripped=!0;var s=function(e,t,n,r,i,o,s,l){var a=typeof(e=e||{}).default;"object"!==a&&"function"!==a||(e=e.default);var u,c="function"==typeof e?e.options:e;if(t&&(c.render=t,c.staticRenderFns=n,c._compiled=!0),r&&(c.functional=!0),o&&(c._scopeId=o),s?(u=function(e){(e=e||this.$vnode&&this.$vnode.ssrContext||this.parent&&this.parent.$vnode&&this.parent.$vnode.ssrContext)||"undefined"==typeof 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 //# sourceMappingURL=sl-vue-tree.js.map
\ No newline at end of file
diff --git a/dist/sl-vue-tree.js.map b/dist/sl-vue-tree.js.map
index bf5442f..a92a2a0 100644
--- a/dist/sl-vue-tree.js.map
+++ b/dist/sl-vue-tree.js.map
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},\n    multiselectKey: {\n      type: [String, Array],\n      default: function () {\n        return ['ctrlKey', 'metaKey']\n      },\n      validator: function (value) {\n        let allowedKeys = ['ctrlKey', 'metaKey', 'altKey'];\n        let multiselectKeys = Array.isArray(value) ? value : [value];\n        multiselectKeys = multiselectKeys.filter(keyName => allowedKeys.indexOf(keyName ) !== -1);\n        return !!multiselectKeys.length;\n      }\n    },\n    scrollAreaHeight: {\n      type: Number,\n      default: 70\n    },\n    maxScrollSpeed: {\n      type: Number,\n      default: 20\n    }\n  },\n\n  data() {\n    return {\n      rootCursorPosition: null,\n      scrollIntervalId: 0,\n      scrollSpeed: 0,\n      lastSelectedNode: null,\n      mouseIsDown: false,\n      isDragging: false,\n      lastMousePos: {x: 0, y: 0},\n      preventDrag: false,\n      currentValue: this.value\n    };\n  },\n\n  mounted() {\n    if (this.isRoot) {\n      document.addEventListener('mouseup', this.onDocumentMouseupHandler);\n    }\n  },\n\n  beforeDestroy() {\n    document.removeEventListener('mouseup', this.onDocumentMouseupHandler);\n  },\n\n  watch: {\n    value: function (newValue) {\n      this.currentValue = newValue;\n    }\n  },\n\n  computed: {\n    cursorPosition() {\n      if (this.isRoot) return this.rootCursorPosition;\n      return this.getParent().cursorPosition;\n    },\n\n    nodes() {\n      if (this.isRoot) {\n        const nodeModels = this.copy(this.currentValue);\n        return this.getNodes(nodeModels);\n      }\n\n      return this.getParent().nodes[this.parentInd].children;\n    },\n    /**\n   * gaps is using for nodes indentation\n   * @returns {number[]}\n   */\n    gaps() {\n      const gaps = [];\n      let i = this.level - 1;\n      if (!this.showBranches) i++;\n      while (i-- > 0) gaps.push(i);\n      return gaps;\n    },\n\n    isRoot() {\n      return !this.level\n    },\n\n    selectionSize() {\n      return this.getSelected().length;\n    },\n\n    dragSize() {\n      return this.getDraggable().length;\n    }\n  },\n  methods: {\n\n    setCursorPosition(pos) {\n      if (this.isRoot) {\n        this.rootCursorPosition = pos;\n        return;\n      }\n      this.getParent().setCursorPosition(pos);\n    },\n\n    getNodes(nodeModels, parentPath = [], isVisible = true) {\n\n      return nodeModels.map((nodeModel, ind) => {\n        const nodePath = parentPath.concat(ind);\n        return this.getNode(nodePath, nodeModel, nodeModels, isVisible);\n      })\n    },\n\n    getNode(\n      path,\n      nodeModel = null,\n      siblings = null,\n      isVisible = null\n    ) {\n      const ind = path.slice(-1)[0];\n\n      // calculate nodeModel, siblings, isVisible fields if it is not passed as arguments\n      siblings = siblings || this.getNodeSiblings(this.currentValue, path);\n      nodeModel = nodeModel || (siblings && siblings[ind]) || null;\n\n      if (isVisible == null) {\n        isVisible = this.isVisible(path);\n      }\n\n      if (!nodeModel) return null;\n\n      const isExpanded = nodeModel.isExpanded == void 0 ? true : !!nodeModel.isExpanded;\n      const isDraggable = nodeModel.isDraggable == void 0 ? true : !!nodeModel.isDraggable;\n      const isSelectable = nodeModel.isSelectable == void 0 ? true : !!nodeModel.isSelectable;\n\n      const node = {\n\n        // define the all ISlTreeNodeModel props\n        title: nodeModel.title,\n        isLeaf: !!nodeModel.isLeaf,\n        children: nodeModel.children ? this.getNodes(nodeModel.children, path, isExpanded) : [],\n        isSelected: !!nodeModel.isSelected,\n        isExpanded,\n        isVisible,\n        isDraggable,\n        isSelectable,\n        data: nodeModel.data !== void 0 ? nodeModel.data : {},\n\n        // define the all ISlTreeNode computed props\n        path: path,\n        pathStr: JSON.stringify(path),\n        level: path.length,\n        ind,\n        isFirstChild: ind == 0,\n        isLastChild: ind === siblings.length - 1\n      };\n      return node;\n    },\n\n    isVisible(path) {\n      if (path.length < 2) return true;\n      let nodeModels = this.currentValue;\n\n      for (let i = 0; i < path.length - 1; i++) {\n        let ind = path[i];\n        let nodeModel = nodeModels[ind];\n        let isExpanded = nodeModel.isExpanded == void 0 ? true : !!nodeModel.isExpanded;\n        if (!isExpanded) return false;\n        nodeModels = nodeModel.children;\n      }\n\n      return true;\n    },\n\n    emitInput(newValue) {\n      this.currentValue = newValue;\n      this.getRoot().$emit('input', newValue);\n    },\n\n    emitSelect(selectedNodes, event) {\n      this.getRoot().$emit('select', selectedNodes, event);\n    },\n\n    emitBeforeDrop(draggingNodes, position, cancel) {\n      this.getRoot().$emit('beforedrop', draggingNodes, position, cancel);\n    },\n\n    emitDrop(draggingNodes, position, event) {\n      this.getRoot().$emit('drop', draggingNodes, position, event);\n    },\n\n    emitToggle(toggledNode, event) {\n      this.getRoot().$emit('toggle', toggledNode, event);\n    },\n\n    emitNodeClick(node, event) {\n      this.getRoot().$emit('nodeclick', node, event);\n    },\n\n    emitNodeDblclick(node, event) {\n      this.getRoot().$emit('nodedblclick', node, event);\n    },\n\n    emitNodeContextmenu(node, event) {\n      this.getRoot().$emit('nodecontextmenu', node, event);\n    },\n\n    onExternalDragoverHandler(node, event) {\n      event.preventDefault();\n      const root = this.getRoot();\n      const cursorPosition = root.getCursorPositionFromCoords(event.clientX, event.clientY);\n      root.setCursorPosition(cursorPosition);\n      root.$emit('externaldragover', cursorPosition, event);\n    },\n\n    onExternalDropHandler(node, event) {\n      const root = this.getRoot();\n      const cursorPosition = root.getCursorPositionFromCoords(event.clientX, event.clientY);\n      root.$emit('externaldrop', cursorPosition, event);\n      this.setCursorPosition(null);\n    },\n\n    select(path, addToSelection = false, event = null) {\n      const multiselectKeys = Array.isArray(this.multiselectKey) ?\n        this.multiselectKey:\n        [this.multiselectKey];\n      const multiselectKeyIsPressed = event && !!multiselectKeys.find(key => event[key]);\n      addToSelection = (multiselectKeyIsPressed || addToSelection) && this.allowMultiselect ;\n\n      const selectedNode = this.getNode(path);\n      if (!selectedNode) return null;\n      const newNodes = this.copy(this.currentValue);\n      const shiftSelectionMode = this.allowMultiselect && event && event.shiftKey && this.lastSelectedNode;\n      const selectedNodes = [];\n      let shiftSelectionStarted = false;\n\n      this.traverse((node, nodeModel) => {\n\n\n        if (shiftSelectionMode) {\n          if (node.pathStr === selectedNode.pathStr || node.pathStr === this.lastSelectedNode.pathStr) {\n            nodeModel.isSelected = node.isSelectable;\n            shiftSelectionStarted = !shiftSelectionStarted;\n          }\n          if (shiftSelectionStarted) nodeModel.isSelected = node.isSelectable;\n        } else if (node.pathStr === selectedNode.pathStr) {\n          nodeModel.isSelected = node.isSelectable;\n        } else if (!addToSelection) {\n          if (nodeModel.isSelected) nodeModel.isSelected = false;\n        }\n\n        if (nodeModel.isSelected) selectedNodes.push(node);\n\n      }, newNodes);\n\n\n      this.lastSelectedNode = selectedNode;\n      this.emitInput(newNodes);\n      this.emitSelect(selectedNodes, event);\n      return selectedNode;\n    },\n\n    onMousemoveHandler(event) {\n      if (!this.isRoot) {\n        this.getRoot().onMousemoveHandler(event);\n        return;\n      }\n\n      if (this.preventDrag) return;\n\n      const initialDraggingState = this.isDragging;\n      const isDragging =\n        this.isDragging || (\n        this.mouseIsDown &&\n        (this.lastMousePos.x !== event.clientX || this.lastMousePos.y !== event.clientY)\n      );\n\n      const isDragStarted = initialDraggingState === false && isDragging === true;\n\n      this.lastMousePos = {\n        x: event.clientX,\n        y: event.clientY\n      };\n\n      if (!isDragging) return;\n\n      const $root = this.getRoot().$el;\n      const rootRect = $root.getBoundingClientRect();\n      const $dragInfo = this.$refs.dragInfo;\n      const dragInfoTop = (event.clientY - rootRect.top + $root.scrollTop - ($dragInfo.style.marginBottom | 0) );\n      const dragInfoLeft = (event.clientX - rootRect.left);\n\n      $dragInfo.style.top = dragInfoTop + 'px';\n      $dragInfo.style.left = dragInfoLeft + 'px';\n\n      const cursorPosition = this.getCursorPositionFromCoords(event.clientX, event.clientY);\n      const destNode = cursorPosition.node;\n      const placement = cursorPosition.placement;\n\n      if (isDragStarted && !destNode.isSelected) {\n        this.select(destNode.path, false, event);\n      }\n\n      const draggableNodes = this.getDraggable();\n      if (!draggableNodes.length) {\n        this.preventDrag = true;\n        return;\n      }\n\n      this.isDragging = isDragging;\n\n      this.setCursorPosition({ node: destNode, placement });\n\n      const scrollBottomLine = rootRect.bottom - this.scrollAreaHeight;\n      const scrollDownSpeed = (event.clientY - scrollBottomLine) / (rootRect.bottom - scrollBottomLine);\n      const scrollTopLine = rootRect.top + this.scrollAreaHeight;\n      const scrollTopSpeed = (scrollTopLine - event.clientY) / (scrollTopLine - rootRect.top);\n\n      if (scrollDownSpeed > 0) {\n        this.startScroll(scrollDownSpeed);\n      } else if (scrollTopSpeed > 0) {\n        this.startScroll(-scrollTopSpeed)\n      } else {\n        this.stopScroll();\n      }\n    },\n\n    getCursorPositionFromCoords(x, y) {\n      const $target = document.elementFromPoint(x, y);\n      const $nodeItem = $target.getAttribute('path') ? $target : this.getClosetElementWithPath($target);\n      let destNode;\n      let placement;\n\n      if ($nodeItem) {\n\n        if (!$nodeItem) return;\n\n        destNode = this.getNode(JSON.parse($nodeItem.getAttribute('path')));\n\n        const nodeHeight = $nodeItem.offsetHeight;\n        const edgeSize = this.edgeSize;\n        const offsetY = y - $nodeItem.getBoundingClientRect().top;\n\n\n        if (destNode.isLeaf) {\n          placement = offsetY >= nodeHeight / 2 ? 'after' : 'before';\n        } else {\n          if (offsetY <= edgeSize) {\n            placement = 'before';\n          } else if (offsetY >= nodeHeight - edgeSize) {\n            placement = 'after';\n          } else {\n            placement = 'inside';\n          }\n        }\n      } else {\n        const $root = this.getRoot().$el;\n        const rootRect = $root.getBoundingClientRect();\n        if (y > rootRect.top + (rootRect.height / 2)) {\n          placement = 'after';\n          destNode = this.getLastNode();\n        } else {\n          placement = 'before';\n          destNode = this.getFirstNode();\n        }\n      }\n\n      return { node: destNode, placement };\n    },\n\n    getClosetElementWithPath($el) {\n      if (!$el) return null;\n      if ($el.getAttribute('path')) return $el;\n      return this.getClosetElementWithPath($el.parentElement);\n    },\n\n    onMouseleaveHandler(event) {\n      if (!this.isRoot || !this.isDragging) return;\n      const $root = this.getRoot().$el;\n      const rootRect = $root.getBoundingClientRect();\n      if (event.clientY >= rootRect.bottom) {\n        this.setCursorPosition({ node: this.nodes.slice(-1)[0], placement: 'after' });\n      } else if (event.clientY < rootRect.top) {\n        this.setCursorPosition({ node: this.getFirstNode(), placement: 'before'});\n      }\n    },\n\n    getNodeEl(path) {\n      this.getRoot().$el.querySelector(`[path=\"${JSON.stringify(path)}\"]`);\n    },\n\n    getLastNode() {\n      let lastNode  = null;\n      this.traverse((node) => {\n        lastNode = node;\n      });\n      return lastNode;\n    },\n\n    getFirstNode() {\n      return this.getNode([0]);\n    },\n\n    getNextNode(path, filter = null) {\n\n      let resultNode = null;\n\n      this.traverse((node) => {\n        if (this.comparePaths(node.path, path) < 1) return;\n\n        if (!filter || filter(node)) {\n          resultNode = node;\n          return false; // stop traverse\n        }\n\n      });\n\n      return resultNode;\n    },\n\n    getPrevNode(path, filter) {\n      let prevNodes = [];\n\n      this.traverse((node) => {\n        if (this.comparePaths(node.path, path) >= 0) {\n          return false;\n        }\n        prevNodes.push(node);\n      });\n\n      let i = prevNodes.length;\n      while (i--) {\n        const node = prevNodes[i];\n        if (!filter || filter(node)) return node;\n      }\n\n      return null;\n    },\n\n    /**\n     * returns 1 if path1 > path2\n     * returns -1 if path1 < path2\n     * returns 0 if path1 == path2\n     *\n     * examples\n     *\n     * [1, 2, 3] < [1, 2, 4]\n     * [1, 1, 3] < [1, 2, 3]\n     * [1, 2, 3] > [1, 2, 0]\n     * [1, 2, 3] > [1, 1, 3]\n     * [1, 2] < [1, 2, 0]\n     *\n     */\n    comparePaths(path1, path2) {\n      for (let i = 0; i < path1.length; i++) {\n        if (path2[i] == void 0) return 1;\n        if (path1[i] > path2[i]) return 1;\n        if (path1[i] < path2[i]) return -1;\n      }\n      return path2[path1.length] == void 0 ? 0 : -1;\n    },\n\n    onNodeMousedownHandler(event, node) {\n      // handle only left mouse button\n      if (event.button !== 0) return;\n\n      if (!this.isRoot) {\n        this.getRoot().onNodeMousedownHandler(event, node);\n        return;\n      }\n      this.mouseIsDown = true;\n    },\n\n\n    startScroll(speed) {\n      const $root = this.getRoot().$el;\n      if (this.scrollSpeed === speed) {\n        return;\n      } else if (this.scrollIntervalId) {\n        this.stopScroll();\n      }\n\n      this.scrollSpeed = speed;\n      this.scrollIntervalId = setInterval(() => {\n        $root.scrollTop += this.maxScrollSpeed * speed;\n      }, 20);\n    },\n\n    stopScroll() {\n      clearInterval(this.scrollIntervalId);\n      this.scrollIntervalId = 0;\n      this.scrollSpeed = 0;\n    },\n\n    onDocumentMouseupHandler(event) {\n      if (this.isDragging) this.onNodeMouseupHandler(event);\n    },\n\n    onNodeMouseupHandler(event, targetNode = null) {\n\n      // handle only left mouse button\n      if (event.button !== 0) return;\n\n      if (!this.isRoot) {\n        this.getRoot().onNodeMouseupHandler(event, targetNode);\n        return;\n      }\n\n      this.mouseIsDown = false;\n\n      if (!this.isDragging && targetNode && !this.preventDrag) {\n        this.select(targetNode.path, false, event);\n      }\n\n      this.preventDrag = false;\n\n      if (!this.cursorPosition) {\n        this.stopDrag();\n        return;\n      };\n\n\n      const draggingNodes = this.getDraggable();\n\n      // check that nodes is possible to insert\n      for (let draggingNode of draggingNodes) {\n        if (draggingNode.pathStr == this.cursorPosition.node.pathStr) {\n          this.stopDrag();\n          return;\n        }\n\n        if (this.checkNodeIsParent(draggingNode, this.cursorPosition.node)) {\n          this.stopDrag();\n          return;\n        }\n      }\n\n      const newNodes = this.copy(this.currentValue);\n      const nodeModelsSubjectToInsert = [];\n\n      // find dragging model to delete\n      for (let draggingNode of draggingNodes) {\n        const sourceSiblings = this.getNodeSiblings(newNodes, draggingNode.path);\n        const draggingNodeModel = sourceSiblings[draggingNode.ind];\n        nodeModelsSubjectToInsert.push(draggingNodeModel);\n      }\n\n      // allow the drop to be cancelled\n      let cancelled = false;\n      this.emitBeforeDrop(draggingNodes, this.cursorPosition, () => cancelled = true);\n\n      if (cancelled) {\n          this.stopDrag();\n          return;\n      }\n\n      const nodeModelsToInsert = [];\n\n      // mark dragging model to delete\n      for (let draggingNodeModel of nodeModelsSubjectToInsert) {\n          nodeModelsToInsert.push(this.copy(draggingNodeModel));\n          draggingNodeModel['_markToDelete'] = true;\n      }\n\n      // insert dragging nodes to the new place\n      this.insertModels(this.cursorPosition, nodeModelsToInsert, newNodes);\n\n\n      // delete dragging node from the old place\n      this.traverseModels((nodeModel, siblings, ind) => {\n        if (!nodeModel._markToDelete) return;\n        siblings.splice(ind, 1);\n      }, newNodes);\n\n\n      this.lastSelectedNode = null;\n      this.emitInput(newNodes);\n      this.emitDrop(draggingNodes, this.cursorPosition, event);\n      this.stopDrag();\n    },\n\n\n    onToggleHandler(event, node) {\n      if (!this.allowToggleBranch) return;\n\n      this.updateNode(node.path, { isExpanded: !node.isExpanded });\n      this.emitToggle(node, event);\n      event.stopPropagation();\n    },\n\n    stopDrag() {\n      this.isDragging = false;\n      this.mouseIsDown = false;\n      this.setCursorPosition(null);\n      this.stopScroll();\n    },\n\n\n    getParent() {\n      return this.$parent;\n    },\n\n    getRoot() {\n      if (this.isRoot) return this;\n      return this.getParent().getRoot();\n    },\n\n    getNodeSiblings(nodes, path) {\n      if (path.length === 1) return nodes;\n      return this.getNodeSiblings(nodes[path[0]].children, path.slice(1));\n    },\n\n\n    updateNode(path, patch) {\n      if (!this.isRoot) {\n        this.getParent().updateNode(path, patch);\n        return;\n      }\n\n      const pathStr = JSON.stringify(path);\n      const newNodes = this.copy(this.currentValue);\n      this.traverse((node, nodeModel) => {\n        if (node.pathStr !== pathStr) return;\n        Object.assign(nodeModel, patch);\n      }, newNodes);\n\n      this.emitInput(newNodes);\n    },\n\n    getSelected() {\n      const selectedNodes = [];\n      this.traverse((node) => {\n        if (node.isSelected) selectedNodes.push(node);\n      });\n      return selectedNodes;\n    },\n\n    getDraggable() {\n      const selectedNodes = [];\n      this.traverse((node) => {\n        if (node.isSelected && node.isDraggable) selectedNodes.push(node);\n      });\n      return selectedNodes;\n    },\n\n\n    traverse(\n      cb,\n      nodeModels = null,\n      parentPath = []\n    ) {\n      if (!nodeModels) nodeModels = this.currentValue;\n\n      let shouldStop = false;\n\n      const nodes = [];\n\n      for (let nodeInd = 0; nodeInd < nodeModels.length; nodeInd++) {\n        const nodeModel = nodeModels[nodeInd];\n        const itemPath = parentPath.concat(nodeInd);\n        const node = this.getNode(itemPath, nodeModel, nodeModels);\n        shouldStop = cb(node, nodeModel, nodeModels) === false;\n        nodes.push(node);\n\n        if (shouldStop) break;\n\n        if (nodeModel.children) {\n          shouldStop = this.traverse(cb, nodeModel.children, itemPath) === false;\n          if (shouldStop) break;\n        }\n      }\n\n      return !shouldStop ? nodes : false;\n    },\n\n    traverseModels(cb, nodeModels) {\n      let i = nodeModels.length;\n      while (i--) {\n        const nodeModel = nodeModels[i];\n        if (nodeModel.children) this.traverseModels(cb, nodeModel.children);\n        cb(nodeModel, nodeModels, i);\n      }\n      return nodeModels;\n    },\n\n    remove(paths) {\n      const pathsStr = paths.map(path => JSON.stringify(path));\n      const newNodes = this.copy(this.currentValue);\n      this.traverse( (node, nodeModel, siblings) => {\n        for (const pathStr of pathsStr) {\n          if (node.pathStr === pathStr) nodeModel._markToDelete = true;\n        }\n      }, newNodes);\n\n      this.traverseModels((nodeModel, siblings, ind) => {\n        if (!nodeModel._markToDelete) return;\n        siblings.splice(ind, 1);\n      }, newNodes);\n\n      this.emitInput(newNodes);\n    },\n\n    insertModels(cursorPosition, nodeModels, newNodes) {\n      const destNode = cursorPosition.node;\n      const destSiblings = this.getNodeSiblings(newNodes, destNode.path);\n      const destNodeModel = destSiblings[destNode.ind];\n\n      if (cursorPosition.placement === 'inside') {\n        destNodeModel.children = destNodeModel.children || [];\n        destNodeModel.children.unshift(...nodeModels);\n      } else {\n        const insertInd = cursorPosition.placement === 'before' ?\n          destNode.ind :\n          destNode.ind + 1;\n\n        destSiblings.splice(insertInd, 0, ...nodeModels);\n      }\n    },\n\n    insert(cursorPosition, nodeModel) {\n      const nodeModels = Array.isArray(nodeModel) ? nodeModel : [nodeModel];\n      const newNodes = this.copy(this.currentValue);\n\n      this.insertModels(cursorPosition, nodeModels, newNodes);\n\n      this.emitInput(newNodes);\n    },\n\n    checkNodeIsParent(sourceNode, destNode) {\n      const destPath = destNode.path;\n      return JSON.stringify(destPath.slice(0, sourceNode.path.length)) == sourceNode.pathStr;\n    },\n\n    copy(entity) {\n      return JSON.parse(JSON.stringify(entity));\n    }\n\n  }\n};\n","var render = function() {\n  var _vm = this\n  var _h = _vm.$createElement\n  var _c = _vm._self._c || _h\n  return _c(\n    \"div\",\n    {\n      staticClass: \"sl-vue-tree\",\n      class: { \"sl-vue-tree-root\": _vm.isRoot },\n      on: {\n        mousemove: _vm.onMousemoveHandler,\n        mouseleave: _vm.onMouseleaveHandler,\n        dragend: function($event) {\n          _vm.onDragendHandler(null, $event)\n        }\n      }\n    },\n    [\n      _c(\n        \"div\",\n        { ref: \"nodes\", staticClass: \"sl-vue-tree-nodes-list\" },\n        [\n          _vm._l(_vm.nodes, function(node, nodeInd) {\n            return _c(\n              \"div\",\n              {\n                staticClass: \"sl-vue-tree-node\",\n                class: { \"sl-vue-tree-selected\": node.isSelected }\n              },\n              [\n                _c(\"div\", {\n                  staticClass: \"sl-vue-tree-cursor sl-vue-tree-cursor_before\",\n                  style: {\n                    visibility:\n                      _vm.cursorPosition &&\n                      _vm.cursorPosition.node.pathStr === node.pathStr &&\n                      _vm.cursorPosition.placement === \"before\"\n                        ? \"visible\"\n                        : \"hidden\"\n                  },\n                  on: {\n                    dragover: function($event) {\n                      $event.preventDefault()\n                    }\n                  }\n                }),\n                _vm._v(\" \"),\n                _c(\n                  \"div\",\n                  {\n                    staticClass: \"sl-vue-tree-node-item\",\n                    class: {\n                      \"sl-vue-tree-cursor-hover\":\n                        _vm.cursorPosition &&\n                        _vm.cursorPosition.node.pathStr === node.pathStr,\n\n                      \"sl-vue-tree-cursor-inside\":\n                        _vm.cursorPosition &&\n                        _vm.cursorPosition.placement === \"inside\" &&\n                        _vm.cursorPosition.node.pathStr === node.pathStr,\n                      \"sl-vue-tree-node-is-leaf\": node.isLeaf,\n                      \"sl-vue-tree-node-is-folder\": !node.isLeaf\n                    },\n                    attrs: { path: node.pathStr },\n                    on: {\n                      mousedown: function($event) {\n                        _vm.onNodeMousedownHandler($event, node)\n                      },\n                      mouseup: function($event) {\n                        _vm.onNodeMouseupHandler($event, node)\n                      },\n                      contextmenu: function($event) {\n                        _vm.emitNodeContextmenu(node, $event)\n                      },\n                      dblclick: function($event) {\n                        _vm.emitNodeDblclick(node, $event)\n                      },\n                      click: function($event) {\n                        _vm.emitNodeClick(node, $event)\n                      },\n                      dragover: function($event) {\n                        _vm.onExternalDragoverHandler(node, $event)\n                      },\n                      drop: function($event) {\n                        _vm.onExternalDropHandler(node, $event)\n                      }\n                    }\n                  },\n                  [\n                    _vm._l(_vm.gaps, function(gapInd) {\n                      return _c(\"div\", { staticClass: \"sl-vue-tree-gap\" })\n                    }),\n                    _vm._v(\" \"),\n                    _vm.level && _vm.showBranches\n                      ? _c(\n                          \"div\",\n                          { staticClass: \"sl-vue-tree-branch\" },\n                          [\n                            _vm._t(\n                              \"branch\",\n                              [\n                                !node.isLastChild\n                                  ? _c(\"span\", [\n                                      _vm._v(\n                                        \"\\n            \" +\n                                          _vm._s(String.fromCharCode(0x251c)) +\n                                          _vm._s(String.fromCharCode(0x2500)) +\n                                          \" \\n          \"\n                                      )\n                                    ])\n                                  : _vm._e(),\n                                _vm._v(\" \"),\n                                node.isLastChild\n                                  ? _c(\"span\", [\n                                      _vm._v(\n                                        \"\\n            \" +\n                                          _vm._s(String.fromCharCode(0x2514)) +\n                                          _vm._s(String.fromCharCode(0x2500)) +\n                                          \" \\n          \"\n                                      )\n                                    ])\n                                  : _vm._e()\n                              ],\n                              { node: node }\n                            )\n                          ],\n                          2\n                        )\n                      : _vm._e(),\n                    _vm._v(\" \"),\n                    _c(\n                      \"div\",\n                      { staticClass: \"sl-vue-tree-title\" },\n                      [\n                        !node.isLeaf\n                          ? _c(\n                              \"span\",\n                              {\n                                staticClass: \"sl-vue-tree-toggle\",\n                                on: {\n                                  click: function($event) {\n                                    _vm.onToggleHandler($event, node)\n                                  }\n                                }\n                              },\n                              [\n                                _vm._t(\n                                  \"toggle\",\n                                  [\n                                    _c(\"span\", [\n                                      _vm._v(\n                                        \"\\n             \" +\n                                          _vm._s(\n                                            !node.isLeaf\n                                              ? node.isExpanded\n                                                ? \"-\"\n                                                : \"+\"\n                                              : \"\"\n                                          ) +\n                                          \"\\n            \"\n                                      )\n                                    ])\n                                  ],\n                                  { node: node }\n                                )\n                              ],\n                              2\n                            )\n                          : _vm._e(),\n                        _vm._v(\" \"),\n                        _vm._t(\"title\", [_vm._v(_vm._s(node.title))], {\n                          node: node\n                        }),\n                        _vm._v(\" \"),\n                        !node.isLeaf &&\n                        node.children.length == 0 &&\n                        node.isExpanded\n                          ? _vm._t(\"empty-node\", null, { node: node })\n                          : _vm._e()\n                      ],\n                      2\n                    ),\n                    _vm._v(\" \"),\n                    _c(\n                      \"div\",\n                      { staticClass: \"sl-vue-tree-sidebar\" },\n                      [_vm._t(\"sidebar\", null, { node: node })],\n                      2\n                    )\n                  ],\n                  2\n                ),\n                _vm._v(\" \"),\n                node.children && node.children.length && node.isExpanded\n                  ? _c(\"sl-vue-tree\", {\n                      attrs: {\n                        value: node.children,\n                        level: node.level,\n                        parentInd: nodeInd,\n                        allowMultiselect: _vm.allowMultiselect,\n                        allowToggleBranch: _vm.allowToggleBranch,\n                        edgeSize: _vm.edgeSize,\n                        showBranches: _vm.showBranches\n                      },\n                      on: {\n                        dragover: function($event) {\n                          $event.preventDefault()\n                        }\n                      },\n                      scopedSlots: _vm._u([\n                        {\n                          key: \"title\",\n                          fn: function(ref) {\n                            var node = ref.node\n                            return [\n                              _vm._t(\"title\", [_vm._v(_vm._s(node.title))], {\n                                node: node\n                              })\n                            ]\n                          }\n                        },\n                        {\n                          key: \"toggle\",\n                          fn: function(ref) {\n                            var node = ref.node\n                            return [\n                              _vm._t(\n                                \"toggle\",\n                                [\n                                  _c(\"span\", [\n                                    _vm._v(\n                                      \"\\n             \" +\n                                        _vm._s(\n                                          !node.isLeaf\n                                            ? node.isExpanded\n                                              ? \"-\"\n                                              : \"+\"\n                                            : \"\"\n                                        ) +\n                                        \"\\n          \"\n                                    )\n                                  ])\n                                ],\n                                { node: node }\n                              )\n                            ]\n                          }\n                        },\n                        {\n                          key: \"sidebar\",\n                          fn: function(ref) {\n                            var node = ref.node\n                            return [_vm._t(\"sidebar\", null, { node: node })]\n                          }\n                        },\n                        {\n                          key: \"empty-node\",\n                          fn: function(ref) {\n                            var node = ref.node\n                            return [\n                              !node.isLeaf &&\n                              node.children.length == 0 &&\n                              node.isExpanded\n                                ? _vm._t(\"empty-node\", null, { node: node })\n                                : _vm._e()\n                            ]\n                          }\n                        }\n                      ])\n                    })\n                  : _vm._e(),\n                _vm._v(\" \"),\n                _c(\"div\", {\n                  staticClass: \"sl-vue-tree-cursor sl-vue-tree-cursor_after\",\n                  style: {\n                    visibility:\n                      _vm.cursorPosition &&\n                      _vm.cursorPosition.node.pathStr === node.pathStr &&\n                      _vm.cursorPosition.placement === \"after\"\n                        ? \"visible\"\n                        : \"hidden\"\n                  },\n                  on: {\n                    dragover: function($event) {\n                      $event.preventDefault()\n                    }\n                  }\n                })\n              ],\n              1\n            )\n          }),\n          _vm._v(\" \"),\n          _vm.isRoot\n            ? _c(\n                \"div\",\n                {\n                  directives: [\n                    {\n                      name: \"show\",\n                      rawName: \"v-show\",\n                      value: _vm.isDragging,\n                      expression: \"isDragging\"\n                    }\n                  ],\n                  ref: \"dragInfo\",\n                  staticClass: \"sl-vue-tree-drag-info\"\n                },\n                [\n                  _vm._t(\"draginfo\", [\n                    _vm._v(\n                      \"\\n        Items: \" +\n                        _vm._s(_vm.selectionSize) +\n                        \"\\n      \"\n                    )\n                  ])\n                ],\n                2\n              )\n            : _vm._e()\n        ],\n        2\n      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options._scopeId = scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = 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    if (!nodeModel) return null;\n\n      const isExpanded = nodeModel.isExpanded == void 0 ? true : !!nodeModel.isExpanded;\n      const isDraggable = nodeModel.isDraggable == void 0 ? true : !!nodeModel.isDraggable;\n      const isSelectable = nodeModel.isSelectable == void 0 ? true : !!nodeModel.isSelectable;\n\n      const node = {\n\n        // define the all ISlTreeNodeModel props\n        title: nodeModel.title,\n        isLeaf: !!nodeModel.isLeaf,\n        children: nodeModel.children ? this.getNodes(nodeModel.children, path, isExpanded) : [],\n        isSelected: !!nodeModel.isSelected,\n        isExpanded,\n        isVisible,\n        isDraggable,\n        isSelectable,\n        data: nodeModel.data !== void 0 ? nodeModel.data : {},\n\n        // define the all ISlTreeNode computed props\n        path: path,\n        pathStr: JSON.stringify(path),\n        level: path.length,\n        ind,\n        isFirstChild: ind == 0,\n        isLastChild: ind === siblings.length - 1\n      };\n      return node;\n    },\n\n    isVisible(path) {\n      if (path.length < 2) return true;\n      let nodeModels = this.currentValue;\n\n      for (let i = 0; i < path.length - 1; i++) {\n        let ind = path[i];\n        let nodeModel = nodeModels[ind];\n        let isExpanded = nodeModel.isExpanded == void 0 ? true : !!nodeModel.isExpanded;\n        if (!isExpanded) return false;\n        nodeModels = nodeModel.children;\n      }\n\n      return true;\n    },\n\n    emitInput(newValue) {\n      this.currentValue = newValue;\n      this.getRoot().$emit('input', newValue);\n    },\n\n    emitSelect(selectedNodes, event) {\n      this.getRoot().$emit('select', selectedNodes, event);\n    },\n\n    emitBeforeDrop(draggingNodes, position, cancel) {\n      this.getRoot().$emit('beforedrop', draggingNodes, position, cancel);\n    },\n\n    emitDrop(draggingNodes, position, event) {\n      this.getRoot().$emit('drop', draggingNodes, position, event);\n    },\n\n    emitToggle(toggledNode, event) {\n      this.getRoot().$emit('toggle', toggledNode, event);\n    },\n\n    emitNodeClick(node, event) {\n      this.getRoot().$emit('nodeclick', node, event);\n    },\n\n    emitNodeDblclick(node, event) {\n      this.getRoot().$emit('nodedblclick', node, event);\n    },\n\n    emitNodeContextmenu(node, event) {\n      this.getRoot().$emit('nodecontextmenu', node, event);\n    },\n\n    onExternalDragoverHandler(node, event) {\n      event.preventDefault();\n      const root = this.getRoot();\n      const cursorPosition = root.getCursorPositionFromCoords(event.clientX, event.clientY);\n      root.setCursorPosition(cursorPosition);\n      root.$emit('externaldragover', cursorPosition, event);\n    },\n\n    onExternalDropHandler(node, event) {\n      const root = this.getRoot();\n      const cursorPosition = root.getCursorPositionFromCoords(event.clientX, event.clientY);\n      root.$emit('externaldrop', cursorPosition, event);\n      this.setCursorPosition(null);\n    },\n\n    select(path, addToSelection = false, event = null) {\n      const multiselectKeys = Array.isArray(this.multiselectKey) ?\n        this.multiselectKey:\n        [this.multiselectKey];\n      const multiselectKeyIsPressed = event && !!multiselectKeys.find(key => event[key]);\n      addToSelection = (multiselectKeyIsPressed || addToSelection) && this.allowMultiselect ;\n\n      const selectedNode = this.getNode(path);\n      if (!selectedNode) return null;\n      const newNodes = this.copy(this.currentValue);\n      const shiftSelectionMode = this.allowMultiselect && event && event.shiftKey && this.lastSelectedNode;\n      const selectedNodes = [];\n      let shiftSelectionStarted = false;\n\n      this.traverse((node, nodeModel) => {\n\n\n        if (shiftSelectionMode) {\n          if (node.pathStr === selectedNode.pathStr || node.pathStr === this.lastSelectedNode.pathStr) {\n            nodeModel.isSelected = node.isSelectable;\n            shiftSelectionStarted = !shiftSelectionStarted;\n          }\n          if (shiftSelectionStarted) nodeModel.isSelected = node.isSelectable;\n        } else if (node.pathStr === selectedNode.pathStr) {\n          nodeModel.isSelected = node.isSelectable;\n        } else if (!addToSelection) {\n          if (nodeModel.isSelected) nodeModel.isSelected = false;\n        }\n\n        if (nodeModel.isSelected) selectedNodes.push(node);\n\n      }, newNodes);\n\n\n      this.lastSelectedNode = selectedNode;\n      this.emitInput(newNodes);\n      this.emitSelect(selectedNodes, event);\n      return selectedNode;\n    },\n\n    onMousemoveHandler(event) {\n      if (!this.isRoot) {\n        this.getRoot().onMousemoveHandler(event);\n        return;\n      }\n\n      if (this.preventDrag) return;\n\n      const initialDraggingState = this.isDragging;\n      const isDragging =\n        this.isDragging || (\n        this.mouseIsDown &&\n        (this.lastMousePos.x !== event.clientX || this.lastMousePos.y !== event.clientY)\n      );\n\n      const isDragStarted = initialDraggingState === false && isDragging === true;\n\n      this.lastMousePos = {\n        x: event.clientX,\n        y: event.clientY\n      };\n\n      if (!isDragging) return;\n\n      const $root = this.getRoot().$el;\n      const rootRect = $root.getBoundingClientRect();\n      const $dragInfo = this.$refs.dragInfo;\n      const dragInfoTop = (event.clientY - rootRect.top + $root.scrollTop - ($dragInfo.style.marginBottom | 0) );\n      const dragInfoLeft = (event.clientX - rootRect.left);\n\n      $dragInfo.style.top = dragInfoTop + 'px';\n      $dragInfo.style.left = dragInfoLeft + 'px';\n\n      const cursorPosition = this.getCursorPositionFromCoords(event.clientX, event.clientY);\n      const destNode = cursorPosition.node;\n      const placement = cursorPosition.placement;\n\n      if (isDragStarted && !destNode.isSelected) {\n        this.select(destNode.path, false, event);\n      }\n\n      const draggableNodes = this.getDraggable();\n      if (!draggableNodes.length) {\n        this.preventDrag = true;\n        return;\n      }\n\n      this.isDragging = isDragging;\n\n      this.setCursorPosition({ node: destNode, placement });\n\n      const scrollBottomLine = rootRect.bottom - this.scrollAreaHeight;\n      const scrollDownSpeed = (event.clientY - scrollBottomLine) / (rootRect.bottom - scrollBottomLine);\n      const scrollTopLine = rootRect.top + this.scrollAreaHeight;\n      const scrollTopSpeed = (scrollTopLine - event.clientY) / (scrollTopLine - rootRect.top);\n\n      if (scrollDownSpeed > 0) {\n        this.startScroll(scrollDownSpeed);\n      } else if (scrollTopSpeed > 0) {\n        this.startScroll(-scrollTopSpeed)\n      } else {\n        this.stopScroll();\n      }\n    },\n\n    getCursorPositionFromCoords(x, y) {\n      const $target = document.elementFromPoint(x, y);\n      const $nodeItem = $target.getAttribute('path') ? $target : this.getClosetElementWithPath($target);\n      let destNode;\n      let placement;\n\n      if ($nodeItem) {\n\n        if (!$nodeItem) return;\n\n        destNode = this.getNode(JSON.parse($nodeItem.getAttribute('path')));\n\n        const nodeHeight = $nodeItem.offsetHeight;\n        const edgeSize = this.edgeSize;\n        const offsetY = y - $nodeItem.getBoundingClientRect().top;\n\n\n        if (destNode.isLeaf) {\n          placement = offsetY >= nodeHeight / 2 ? 'after' : 'before';\n        } else {\n          if (offsetY <= edgeSize) {\n            placement = 'before';\n          } else if (offsetY >= nodeHeight - edgeSize) {\n            placement = 'after';\n          } else {\n            placement = 'inside';\n          }\n        }\n      } else {\n        const $root = this.getRoot().$el;\n        const rootRect = $root.getBoundingClientRect();\n        if (y > rootRect.top + (rootRect.height / 2)) {\n          placement = 'after';\n          destNode = this.getLastNode();\n        } else {\n          placement = 'before';\n          destNode = this.getFirstNode();\n        }\n      }\n\n      return { node: destNode, placement };\n    },\n\n    getClosetElementWithPath($el) {\n      if (!$el) return null;\n      if ($el.getAttribute('path')) return $el;\n      return this.getClosetElementWithPath($el.parentElement);\n    },\n\n    onMouseleaveHandler(event) {\n      if (!this.isRoot || !this.isDragging) return;\n      const $root = this.getRoot().$el;\n      const rootRect = $root.getBoundingClientRect();\n      if (event.clientY >= rootRect.bottom) {\n        this.setCursorPosition({ node: this.nodes.slice(-1)[0], placement: 'after' });\n      } else if (event.clientY < rootRect.top) {\n        this.setCursorPosition({ node: this.getFirstNode(), placement: 'before'});\n      }\n    },\n\n    getNodeEl(path) {\n      this.getRoot().$el.querySelector(`[path=\"${JSON.stringify(path)}\"]`);\n    },\n\n    getLastNode() {\n      let lastNode  = null;\n      this.traverse((node) => {\n        lastNode = node;\n      });\n      return lastNode;\n    },\n\n    getFirstNode() {\n      return this.getNode([0]);\n    },\n\n    getNextNode(path, filter = null) {\n\n      let resultNode = null;\n\n      this.traverse((node) => {\n        if (this.comparePaths(node.path, path) < 1) return;\n\n        if (!filter || filter(node)) {\n          resultNode = node;\n          return false; // stop traverse\n        }\n\n      });\n\n      return resultNode;\n    },\n\n    getPrevNode(path, filter) {\n      let prevNodes = [];\n\n      this.traverse((node) => {\n        if (this.comparePaths(node.path, path) >= 0) {\n          return false;\n        }\n        prevNodes.push(node);\n      });\n\n      let i = prevNodes.length;\n      while (i--) {\n        const node = prevNodes[i];\n        if (!filter || filter(node)) return node;\n      }\n\n      return null;\n    },\n\n    /**\n     * returns 1 if path1 > path2\n     * returns -1 if path1 < path2\n     * returns 0 if path1 == path2\n     *\n     * examples\n     *\n     * [1, 2, 3] < [1, 2, 4]\n     * [1, 1, 3] < [1, 2, 3]\n     * [1, 2, 3] > [1, 2, 0]\n     * [1, 2, 3] > [1, 1, 3]\n     * [1, 2] < [1, 2, 0]\n     *\n     */\n    comparePaths(path1, path2) {\n      for (let i = 0; i < path1.length; i++) {\n        if (path2[i] == void 0) return 1;\n        if (path1[i] > path2[i]) return 1;\n        if (path1[i] < path2[i]) return -1;\n      }\n      return path2[path1.length] == void 0 ? 0 : -1;\n    },\n\n    onNodeMousedownHandler(event, node) {\n      // handle only left mouse button\n      if (event.button !== 0) return;\n\n      if (!this.isRoot) {\n        this.getRoot().onNodeMousedownHandler(event, node);\n        return;\n      }\n      this.mouseIsDown = true;\n    },\n\n\n    startScroll(speed) {\n      const $root = this.getRoot().$el;\n      if (this.scrollSpeed === speed) {\n        return;\n      } else if (this.scrollIntervalId) {\n        this.stopScroll();\n      }\n\n      this.scrollSpeed = speed;\n      this.scrollIntervalId = setInterval(() => {\n        $root.scrollTop += this.maxScrollSpeed * speed;\n      }, 20);\n    },\n\n    stopScroll() {\n      clearInterval(this.scrollIntervalId);\n      this.scrollIntervalId = 0;\n      this.scrollSpeed = 0;\n    },\n\n    onDocumentMouseupHandler(event) {\n      if (this.isDragging) this.onNodeMouseupHandler(event);\n    },\n\n    onNodeMouseupHandler(event, targetNode = null) {\n\n      // handle only left mouse button\n      if (event.button !== 0) return;\n\n      if (!this.isRoot) {\n        this.getRoot().onNodeMouseupHandler(event, targetNode);\n        return;\n      }\n\n      this.mouseIsDown = false;\n\n      if (!this.isDragging && targetNode && !this.preventDrag) {\n        this.select(targetNode.path, false, event);\n      }\n\n      this.preventDrag = false;\n\n      if (!this.cursorPosition) {\n        this.stopDrag();\n        return;\n      };\n\n\n      const draggingNodes = this.getDraggable();\n\n      // check that nodes is possible to insert\n      for (let draggingNode of draggingNodes) {\n        if (draggingNode.pathStr == this.cursorPosition.node.pathStr) {\n          this.stopDrag();\n          return;\n        }\n\n        if (this.checkNodeIsParent(draggingNode, this.cursorPosition.node)) {\n          this.stopDrag();\n          return;\n        }\n      }\n\n      const newNodes = this.copy(this.currentValue);\n      const nodeModelsSubjectToInsert = [];\n\n      // find dragging model to delete\n      for (let draggingNode of draggingNodes) {\n        const sourceSiblings = this.getNodeSiblings(newNodes, draggingNode.path);\n        const draggingNodeModel = sourceSiblings[draggingNode.ind];\n        nodeModelsSubjectToInsert.push(draggingNodeModel);\n      }\n\n      // allow the drop to be cancelled\n      let cancelled = false;\n      this.emitBeforeDrop(draggingNodes, this.cursorPosition, () => cancelled = true);\n\n      if (cancelled) {\n          this.stopDrag();\n          return;\n      }\n\n      const nodeModelsToInsert = [];\n\n      // mark dragging model to delete\n      for (let draggingNodeModel of nodeModelsSubjectToInsert) {\n          nodeModelsToInsert.push(this.copy(draggingNodeModel));\n          draggingNodeModel['_markToDelete'] = true;\n      }\n\n      // insert dragging nodes to the new place\n      this.insertModels(this.cursorPosition, nodeModelsToInsert, newNodes);\n\n\n      // delete dragging node from the old place\n      this.traverseModels((nodeModel, siblings, ind) => {\n        if (!nodeModel._markToDelete) return;\n        siblings.splice(ind, 1);\n      }, newNodes);\n\n\n      this.lastSelectedNode = null;\n      this.emitInput(newNodes);\n      this.emitDrop(draggingNodes, this.cursorPosition, event);\n      this.stopDrag();\n    },\n\n\n    onToggleHandler(event, node) {\n      if (!this.allowToggleBranch) return;\n\n      this.updateNode(node.path, { isExpanded: !node.isExpanded });\n      this.emitToggle(node, event);\n      event.stopPropagation();\n    },\n\n    stopDrag() {\n      this.isDragging = false;\n      this.mouseIsDown = false;\n      this.setCursorPosition(null);\n      this.stopScroll();\n    },\n\n\n    getParent() {\n      return this.$parent;\n    },\n\n    getRoot() {\n      if (this.isRoot) return this;\n      return this.getParent().getRoot();\n    },\n\n    getNodeSiblings(nodes, path) {\n      if (path.length === 1) return nodes;\n      return this.getNodeSiblings(nodes[path[0]].children, path.slice(1));\n    },\n\n\n    updateNode(path, patch) {\n      if (!this.isRoot) {\n        this.getParent().updateNode(path, patch);\n        return;\n      }\n\n      const pathStr = JSON.stringify(path);\n      const newNodes = this.copy(this.currentValue);\n      this.traverse((node, nodeModel) => {\n        if (node.pathStr !== pathStr) return;\n        Object.assign(nodeModel, patch);\n      }, newNodes);\n\n      this.emitInput(newNodes);\n    },\n\n    getSelected() {\n      const selectedNodes = [];\n      this.traverse((node) => {\n        if (node.isSelected) selectedNodes.push(node);\n      });\n      return selectedNodes;\n    },\n\n    getDraggable() {\n      const selectedNodes = [];\n      this.traverse((node) => {\n        if (node.isSelected && node.isDraggable) selectedNodes.push(node);\n      });\n      return selectedNodes;\n    },\n\n\n    traverse(\n      cb,\n      nodeModels = null,\n      parentPath = []\n    ) {\n      if (!nodeModels) nodeModels = this.currentValue;\n\n      let shouldStop = false;\n\n      const nodes = [];\n\n      for (let nodeInd = 0; nodeInd < nodeModels.length; nodeInd++) {\n        const nodeModel = nodeModels[nodeInd];\n        const itemPath = parentPath.concat(nodeInd);\n        const node = this.getNode(itemPath, nodeModel, nodeModels);\n        shouldStop = cb(node, nodeModel, nodeModels) === false;\n        nodes.push(node);\n\n        if (shouldStop) break;\n\n        if (nodeModel.children) {\n          shouldStop = this.traverse(cb, nodeModel.children, itemPath) === false;\n          if (shouldStop) break;\n        }\n      }\n\n      return !shouldStop ? nodes : false;\n    },\n\n    traverseModels(cb, nodeModels) {\n      let i = nodeModels.length;\n      while (i--) {\n        const nodeModel = nodeModels[i];\n        if (nodeModel.children) this.traverseModels(cb, nodeModel.children);\n        cb(nodeModel, nodeModels, i);\n      }\n      return nodeModels;\n    },\n\n    remove(paths) {\n      const pathsStr = paths.map(path => JSON.stringify(path));\n      const newNodes = this.copy(this.currentValue);\n      this.traverse( (node, nodeModel, siblings) => {\n        for (const pathStr of pathsStr) {\n          if (node.pathStr === pathStr) nodeModel._markToDelete = true;\n        }\n      }, newNodes);\n\n      this.traverseModels((nodeModel, siblings, ind) => {\n        if (!nodeModel._markToDelete) return;\n        siblings.splice(ind, 1);\n      }, newNodes);\n\n      this.emitInput(newNodes);\n    },\n\n    insertModels(cursorPosition, nodeModels, newNodes) {\n      const destNode = cursorPosition.node;\n      const destSiblings = this.getNodeSiblings(newNodes, destNode.path);\n      const destNodeModel = destSiblings[destNode.ind];\n\n      if (cursorPosition.placement === 'inside') {\n        destNodeModel.children = destNodeModel.children || [];\n        destNodeModel.children.unshift(...nodeModels);\n      } else {\n        const insertInd = cursorPosition.placement === 'before' ?\n          destNode.ind :\n          destNode.ind + 1;\n\n        destSiblings.splice(insertInd, 0, ...nodeModels);\n      }\n    },\n\n    insert(cursorPosition, nodeModel) {\n      const nodeModels = Array.isArray(nodeModel) ? nodeModel : [nodeModel];\n      const newNodes = this.copy(this.currentValue);\n\n      this.insertModels(cursorPosition, nodeModels, newNodes);\n\n      this.emitInput(newNodes);\n    },\n\n    checkNodeIsParent(sourceNode, destNode) {\n      const destPath = destNode.path;\n      return JSON.stringify(destPath.slice(0, sourceNode.path.length)) == sourceNode.pathStr;\n    },\n\n    copy(entity) {\n      return JSON.parse(JSON.stringify(entity));\n    }\n\n  }\n};\n","var render = function() {\n  var _vm = this\n  var _h = _vm.$createElement\n  var _c = _vm._self._c || _h\n  return _c(\n    \"div\",\n    {\n      staticClass: \"sl-vue-tree\",\n      class: { \"sl-vue-tree-root\": _vm.isRoot },\n      on: {\n        mousemove: _vm.onMousemoveHandler,\n        mouseleave: _vm.onMouseleaveHandler,\n        dragend: function($event) {\n          _vm.onDragendHandler(null, $event)\n        }\n      }\n    },\n    [\n      _c(\n        \"div\",\n        { ref: \"nodes\", staticClass: \"sl-vue-tree-nodes-list\" },\n        [\n          _vm._l(_vm.nodes, function(node, nodeInd) {\n            return _c(\n              \"div\",\n              {\n                staticClass: \"sl-vue-tree-node\",\n                class: { \"sl-vue-tree-selected\": node.isSelected }\n              },\n              [\n                _c(\"div\", {\n                  staticClass: \"sl-vue-tree-cursor sl-vue-tree-cursor_before\",\n                  style: {\n                    visibility:\n                      _vm.cursorPosition &&\n                      _vm.cursorPosition.node.pathStr === node.pathStr &&\n                      _vm.cursorPosition.placement === \"before\"\n                        ? \"visible\"\n                        : \"hidden\",\n                    \"--depth\": _vm.depth\n                  },\n                  on: {\n                    dragover: function($event) {\n                      $event.preventDefault()\n                    }\n                  }\n                }),\n                _vm._v(\" \"),\n                _c(\n                  \"div\",\n                  {\n                    staticClass: \"sl-vue-tree-node-item\",\n                    class: {\n                      \"sl-vue-tree-cursor-hover\":\n                        _vm.cursorPosition &&\n                        _vm.cursorPosition.node.pathStr === node.pathStr,\n\n                      \"sl-vue-tree-cursor-inside\":\n                        _vm.cursorPosition &&\n                        _vm.cursorPosition.placement === \"inside\" &&\n                        _vm.cursorPosition.node.pathStr === node.pathStr,\n                      \"sl-vue-tree-node-is-leaf\": node.isLeaf,\n                      \"sl-vue-tree-node-is-folder\": !node.isLeaf\n                    },\n                    attrs: { path: node.pathStr },\n                    on: {\n                      mousedown: function($event) {\n                        _vm.onNodeMousedownHandler($event, node)\n                      },\n                      mouseup: function($event) {\n                        _vm.onNodeMouseupHandler($event, node)\n                      },\n                      contextmenu: function($event) {\n                        _vm.emitNodeContextmenu(node, $event)\n                      },\n                      dblclick: function($event) {\n                        _vm.emitNodeDblclick(node, $event)\n                      },\n                      click: function($event) {\n                        _vm.emitNodeClick(node, $event)\n                      },\n                      dragover: function($event) {\n                        _vm.onExternalDragoverHandler(node, $event)\n                      },\n                      drop: function($event) {\n                        _vm.onExternalDropHandler(node, $event)\n                      }\n                    }\n                  },\n                  [\n                    _vm._l(_vm.gaps, function(gapInd) {\n                      return _c(\"div\", { staticClass: \"sl-vue-tree-gap\" })\n                    }),\n                    _vm._v(\" \"),\n                    _vm.level && _vm.showBranches\n                      ? _c(\n                          \"div\",\n                          { staticClass: \"sl-vue-tree-branch\" },\n                          [\n                            _vm._t(\n                              \"branch\",\n                              [\n                                !node.isLastChild\n                                  ? _c(\"span\", [\n                                      _vm._v(\n                                        \"\\n            \" +\n                                          _vm._s(String.fromCharCode(0x251c)) +\n                                          _vm._s(String.fromCharCode(0x2500)) +\n                                          \" \\n          \"\n                                      )\n                                    ])\n                                  : _vm._e(),\n                                _vm._v(\" \"),\n                                node.isLastChild\n                                  ? _c(\"span\", [\n                                      _vm._v(\n                                        \"\\n            \" +\n                                          _vm._s(String.fromCharCode(0x2514)) +\n                                          _vm._s(String.fromCharCode(0x2500)) +\n                                          \" \\n          \"\n                                      )\n                                    ])\n                                  : _vm._e()\n                              ],\n                              { node: node }\n                            )\n                          ],\n                          2\n                        )\n                      : _vm._e(),\n                    _vm._v(\" \"),\n                    _c(\n                      \"div\",\n                      { staticClass: \"sl-vue-tree-title\" },\n                      [\n                        !node.isLeaf\n                          ? _c(\n                              \"span\",\n                              {\n                                staticClass: \"sl-vue-tree-toggle\",\n                                on: {\n                                  click: function($event) {\n                                    _vm.onToggleHandler($event, node)\n                                  }\n                                }\n                              },\n                              [\n                                _vm._t(\n                                  \"toggle\",\n                                  [\n                                    _c(\"span\", [\n                                      _vm._v(\n                                        \"\\n             \" +\n                                          _vm._s(\n                                            !node.isLeaf\n                                              ? node.isExpanded\n                                                ? \"-\"\n                                                : \"+\"\n                                              : \"\"\n                                          ) +\n                                          \"\\n            \"\n                                      )\n                                    ])\n                                  ],\n                                  { node: node }\n                                )\n                              ],\n                              2\n                            )\n                          : _vm._e(),\n                        _vm._v(\" \"),\n                        _vm._t(\"title\", [_vm._v(_vm._s(node.title))], {\n                          node: node\n                        }),\n                        _vm._v(\" \"),\n                        !node.isLeaf &&\n                        node.children.length == 0 &&\n                        node.isExpanded\n                          ? _vm._t(\"empty-node\", null, { node: node })\n                          : _vm._e()\n                      ],\n                      2\n                    ),\n                    _vm._v(\" \"),\n                    _c(\n                      \"div\",\n                      { staticClass: \"sl-vue-tree-sidebar\" },\n                      [_vm._t(\"sidebar\", null, { node: node })],\n                      2\n                    )\n                  ],\n                  2\n                ),\n                _vm._v(\" \"),\n                node.children && node.children.length && node.isExpanded\n                  ? _c(\"sl-vue-tree\", {\n                      attrs: {\n                        value: node.children,\n                        level: node.level,\n                        parentInd: nodeInd,\n                        allowMultiselect: _vm.allowMultiselect,\n                        allowToggleBranch: _vm.allowToggleBranch,\n                        edgeSize: _vm.edgeSize,\n                        showBranches: _vm.showBranches\n                      },\n                      on: {\n                        dragover: function($event) {\n                          $event.preventDefault()\n                        }\n                      },\n                      scopedSlots: _vm._u([\n                        {\n                          key: \"title\",\n                          fn: function(ref) {\n                            var node = ref.node\n                            return [\n                              _vm._t(\"title\", [_vm._v(_vm._s(node.title))], {\n                                node: node\n                              })\n                            ]\n                          }\n                        },\n                        {\n                          key: \"toggle\",\n                          fn: function(ref) {\n                            var node = ref.node\n                            return [\n                              _vm._t(\n                                \"toggle\",\n                                [\n                                  _c(\"span\", [\n                                    _vm._v(\n                                      \"\\n             \" +\n                                        _vm._s(\n                                          !node.isLeaf\n                                            ? node.isExpanded\n                                              ? \"-\"\n                                              : \"+\"\n                                            : \"\"\n                                        ) +\n                                        \"\\n          \"\n                                    )\n                                  ])\n                                ],\n                                { node: node }\n                              )\n                            ]\n                          }\n                        },\n                        {\n                          key: \"sidebar\",\n                          fn: function(ref) {\n                            var node = ref.node\n                            return [_vm._t(\"sidebar\", null, { node: node })]\n                          }\n                        },\n                        {\n                          key: \"empty-node\",\n                          fn: function(ref) {\n                            var node = ref.node\n                            return [\n                              !node.isLeaf &&\n                              node.children.length == 0 &&\n                              node.isExpanded\n                                ? _vm._t(\"empty-node\", null, { node: node })\n                                : _vm._e()\n                            ]\n                          }\n                        }\n                      ])\n                    })\n                  : _vm._e(),\n                _vm._v(\" \"),\n                _c(\"div\", {\n                  staticClass: \"sl-vue-tree-cursor sl-vue-tree-cursor_after\",\n                  style: {\n                    visibility:\n                      _vm.cursorPosition &&\n                      _vm.cursorPosition.node.pathStr === node.pathStr &&\n                      _vm.cursorPosition.placement === \"after\"\n                        ? \"visible\"\n                        : \"hidden\",\n                    \"--depth\": _vm.depth\n                  },\n                  on: {\n                    dragover: function($event) {\n                      $event.preventDefault()\n                    }\n                  }\n                })\n              ],\n              1\n            )\n          }),\n          _vm._v(\" \"),\n          _vm.isRoot\n            ? _c(\n                \"div\",\n                {\n                  directives: [\n                    {\n                      name: \"show\",\n                      rawName: \"v-show\",\n                      value: _vm.isDragging,\n                      expression: \"isDragging\"\n                    }\n                  ],\n                  ref: \"dragInfo\",\n                  staticClass: \"sl-vue-tree-drag-info\"\n                },\n                [\n                  _vm._t(\"draginfo\", [\n                    _vm._v(\n                      \"\\n        Items: \" +\n                        _vm._s(_vm.selectionSize) +\n                        \"\\n      \"\n                    )\n                  ])\n                ],\n                2\n              )\n            : _vm._e()\n        ],\n        2\n      )\n    ]\n  )\n}\nvar staticRenderFns = []\nrender._withStripped = true\nexport { render, staticRenderFns }\nif (module.hot) {\n  module.hot.accept()\n  if (module.hot.data) {\n    require(\"vue-hot-reload-api\")      .rerender(\"data-v-539decb0\", { render: render, staticRenderFns: staticRenderFns })\n  }\n}","var disposed = false\n/* script */\nexport * from \"!!babel-loader!./sl-vue-tree.js\"\nimport __vue_script__ from \"!!babel-loader!./sl-vue-tree.js\"/* template */\nimport {render as __vue_render__, staticRenderFns as __vue_static_render_fns__} from \"!!../node_modules/vue-loader/lib/template-compiler/index?{\\\"id\\\":\\\"data-v-539decb0\\\",\\\"hasScoped\\\":false,\\\"optionsId\\\":\\\"0\\\",\\\"buble\\\":{\\\"transforms\\\":{}}}!../node_modules/vue-loader/lib/selector?type=template&index=0!./sl-vue-tree.vue\"\n/* template functional */\nvar __vue_template_functional__ = false\n/* styles */\nvar __vue_styles__ = null\n/* scopeId */\nvar __vue_scopeId__ = null\n/* moduleIdentifier (server only) */\nvar __vue_module_identifier__ = null\nimport normalizeComponent from \"!../node_modules/vue-loader/lib/runtime/component-normalizer\"\nvar Component = normalizeComponent(\n  __vue_script__,\n  __vue_render__,\n  __vue_static_render_fns__,\n  __vue_template_functional__,\n  __vue_styles__,\n  __vue_scopeId__,\n  __vue_module_identifier__\n)\nComponent.options.__file = \"src/sl-vue-tree.vue\"\n\n/* hot reload */\nif (module.hot) {(function () {\n  var hotAPI = require(\"vue-hot-reload-api\")\n  hotAPI.install(require(\"vue\"), false)\n  if (!hotAPI.compatible) return\n  module.hot.accept()\n  if (!module.hot.data) {\n    hotAPI.createRecord(\"data-v-539decb0\", Component.options)\n  } else {\n    hotAPI.reload(\"data-v-539decb0\", Component.options)\n  }\n  module.hot.dispose(function (data) {\n    disposed = true\n  })\n})()}\n\nexport default Component.exports\n","/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nexport default function normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  scriptExports = scriptExports || {}\n\n  // ES6 modules interop\n  var type = typeof scriptExports.default\n  if (type === 'object' || type === 'function') {\n    scriptExports = scriptExports.default\n  }\n\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () { injectStyles.call(this, this.$root.$options.shadowRoot) }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functioal component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 25d02c8..9a15061 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "sl-vue-tree",
-  "version": "1.8.2",
+  "version": "1.8.4",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -10,7 +10,7 @@
       "integrity": "sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==",
       "dev": true,
       "requires": {
-        "@babel/highlight": "7.0.0"
+        "@babel/highlight": "^7.0.0"
       }
     },
     "@babel/core": {
@@ -19,20 +19,20 @@
       "integrity": "sha512-IFeSSnjXdhDaoysIlev//UzHZbdEmm7D0EIH2qtse9xK7mXEZQpYjs2P00XlP1qYsYvid79p+Zgg6tz1mp6iVw==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "7.0.0",
-        "@babel/generator": "7.1.3",
-        "@babel/helpers": "7.1.2",
-        "@babel/parser": "7.1.3",
-        "@babel/template": "7.1.2",
-        "@babel/traverse": "7.1.4",
-        "@babel/types": "7.1.3",
-        "convert-source-map": "1.6.0",
-        "debug": "3.2.6",
-        "json5": "0.5.1",
-        "lodash": "4.17.11",
-        "resolve": "1.7.1",
-        "semver": "5.6.0",
-        "source-map": "0.5.7"
+        "@babel/code-frame": "^7.0.0",
+        "@babel/generator": "^7.1.2",
+        "@babel/helpers": "^7.1.2",
+        "@babel/parser": "^7.1.2",
+        "@babel/template": "^7.1.2",
+        "@babel/traverse": "^7.1.0",
+        "@babel/types": "^7.1.2",
+        "convert-source-map": "^1.1.0",
+        "debug": "^3.1.0",
+        "json5": "^0.5.0",
+        "lodash": "^4.17.10",
+        "resolve": "^1.3.2",
+        "semver": "^5.4.1",
+        "source-map": "^0.5.0"
       },
       "dependencies": {
         "debug": {
@@ -41,7 +41,7 @@
           "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
           "dev": true,
           "requires": {
-            "ms": "2.1.1"
+            "ms": "^2.1.1"
           }
         },
         "ms": {
@@ -58,11 +58,11 @@
       "integrity": "sha512-ZoCZGcfIJFJuZBqxcY9OjC1KW2lWK64qrX1o4UYL3yshVhwKFYgzpWZ0vvtGMNJdTlvkw0W+HR1VnYN8q3QPFQ==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.1.3",
-        "jsesc": "2.5.1",
-        "lodash": "4.17.11",
-        "source-map": "0.5.7",
-        "trim-right": "1.0.1"
+        "@babel/types": "^7.1.3",
+        "jsesc": "^2.5.1",
+        "lodash": "^4.17.10",
+        "source-map": "^0.5.0",
+        "trim-right": "^1.0.1"
       },
       "dependencies": {
         "jsesc": {
@@ -79,7 +79,7 @@
       "integrity": "sha512-3UYcJUj9kvSLbLbUIfQTqzcy5VX7GRZ/CCDrnOaZorFFM01aXp1+GJwuFGV4NDDoAS+mOUyHcO6UD/RfqOks3Q==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.1.3"
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-builder-binary-assignment-operator-visitor": {
@@ -88,8 +88,8 @@
       "integrity": "sha512-qNSR4jrmJ8M1VMM9tibvyRAHXQs2PmaksQF7c1CGJNipfe3D8p+wgNwgso/P2A2r2mdgBWAXljNWR0QRZAMW8w==",
       "dev": true,
       "requires": {
-        "@babel/helper-explode-assignable-expression": "7.1.0",
-        "@babel/types": "7.1.3"
+        "@babel/helper-explode-assignable-expression": "^7.1.0",
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-call-delegate": {
@@ -98,9 +98,9 @@
       "integrity": "sha512-YEtYZrw3GUK6emQHKthltKNZwszBcHK58Ygcis+gVUrF4/FmTVr5CCqQNSfmvg2y+YDEANyYoaLz/SHsnusCwQ==",
       "dev": true,
       "requires": {
-        "@babel/helper-hoist-variables": "7.0.0",
-        "@babel/traverse": "7.1.4",
-        "@babel/types": "7.1.3"
+        "@babel/helper-hoist-variables": "^7.0.0",
+        "@babel/traverse": "^7.1.0",
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-define-map": {
@@ -109,9 +109,9 @@
       "integrity": "sha512-yPPcW8dc3gZLN+U1mhYV91QU3n5uTbx7DUdf8NnPbjS0RMwBuHi9Xt2MUgppmNz7CJxTBWsGczTiEp1CSOTPRg==",
       "dev": true,
       "requires": {
-        "@babel/helper-function-name": "7.1.0",
-        "@babel/types": "7.1.3",
-        "lodash": "4.17.11"
+        "@babel/helper-function-name": "^7.1.0",
+        "@babel/types": "^7.0.0",
+        "lodash": "^4.17.10"
       }
     },
     "@babel/helper-explode-assignable-expression": {
@@ -120,8 +120,8 @@
       "integrity": "sha512-NRQpfHrJ1msCHtKjbzs9YcMmJZOg6mQMmGRB+hbamEdG5PNpaSm95275VD92DvJKuyl0s2sFiDmMZ+EnnvufqA==",
       "dev": true,
       "requires": {
-        "@babel/traverse": "7.1.4",
-        "@babel/types": "7.1.3"
+        "@babel/traverse": "^7.1.0",
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-function-name": {
@@ -130,9 +130,9 @@
       "integrity": "sha512-A95XEoCpb3TO+KZzJ4S/5uW5fNe26DjBGqf1o9ucyLyCmi1dXq/B3c8iaWTfBk3VvetUxl16e8tIrd5teOCfGw==",
       "dev": true,
       "requires": {
-        "@babel/helper-get-function-arity": "7.0.0",
-        "@babel/template": "7.1.2",
-        "@babel/types": "7.1.3"
+        "@babel/helper-get-function-arity": "^7.0.0",
+        "@babel/template": "^7.1.0",
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-get-function-arity": {
@@ -141,7 +141,7 @@
       "integrity": "sha512-r2DbJeg4svYvt3HOS74U4eWKsUAMRH01Z1ds1zx8KNTPtpTL5JAsdFv8BNyOpVqdFhHkkRDIg5B4AsxmkjAlmQ==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.1.3"
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-hoist-variables": {
@@ -150,7 +150,7 @@
       "integrity": "sha512-Ggv5sldXUeSKsuzLkddtyhyHe2YantsxWKNi7A+7LeD12ExRDWTRk29JCXpaHPAbMaIPZSil7n+lq78WY2VY7w==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.1.3"
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-member-expression-to-functions": {
@@ -159,7 +159,7 @@
       "integrity": "sha512-avo+lm/QmZlv27Zsi0xEor2fKcqWG56D5ae9dzklpIaY7cQMK5N8VSpaNVPPagiqmy7LrEjK1IWdGMOqPu5csg==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.1.3"
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-module-imports": {
@@ -168,7 +168,7 @@
       "integrity": "sha512-aP/hlLq01DWNEiDg4Jn23i+CXxW/owM4WpDLFUbpjxe4NS3BhLVZQ5i7E0ZrxuQ/vwekIeciyamgB1UIYxxM6A==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.1.3"
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-module-transforms": {
@@ -177,12 +177,12 @@
       "integrity": "sha512-0JZRd2yhawo79Rcm4w0LwSMILFmFXjugG3yqf+P/UsKsRS1mJCmMwwlHDlMg7Avr9LrvSpp4ZSULO9r8jpCzcw==",
       "dev": true,
       "requires": {
-        "@babel/helper-module-imports": "7.0.0",
-        "@babel/helper-simple-access": "7.1.0",
-        "@babel/helper-split-export-declaration": "7.0.0",
-        "@babel/template": "7.1.2",
-        "@babel/types": "7.1.3",
-        "lodash": "4.17.11"
+        "@babel/helper-module-imports": "^7.0.0",
+        "@babel/helper-simple-access": "^7.1.0",
+        "@babel/helper-split-export-declaration": "^7.0.0",
+        "@babel/template": "^7.1.0",
+        "@babel/types": "^7.0.0",
+        "lodash": "^4.17.10"
       }
     },
     "@babel/helper-optimise-call-expression": {
@@ -191,7 +191,7 @@
       "integrity": "sha512-u8nd9NQePYNQV8iPWu/pLLYBqZBa4ZaY1YWRFMuxrid94wKI1QNt67NEZ7GAe5Kc/0LLScbim05xZFWkAdrj9g==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.1.3"
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-plugin-utils": {
@@ -206,7 +206,7 @@
       "integrity": "sha512-TR0/N0NDCcUIUEbqV6dCO+LptmmSQFQ7q70lfcEB4URsjD0E1HzicrwUH+ap6BAQ2jhCX9Q4UqZy4wilujWlkg==",
       "dev": true,
       "requires": {
-        "lodash": "4.17.11"
+        "lodash": "^4.17.10"
       }
     },
     "@babel/helper-remap-async-to-generator": {
@@ -215,11 +215,11 @@
       "integrity": "sha512-3fOK0L+Fdlg8S5al8u/hWE6vhufGSn0bN09xm2LXMy//REAF8kDCrYoOBKYmA8m5Nom+sV9LyLCwrFynA8/slg==",
       "dev": true,
       "requires": {
-        "@babel/helper-annotate-as-pure": "7.0.0",
-        "@babel/helper-wrap-function": "7.1.0",
-        "@babel/template": "7.1.2",
-        "@babel/traverse": "7.1.4",
-        "@babel/types": "7.1.3"
+        "@babel/helper-annotate-as-pure": "^7.0.0",
+        "@babel/helper-wrap-function": "^7.1.0",
+        "@babel/template": "^7.1.0",
+        "@babel/traverse": "^7.1.0",
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-replace-supers": {
@@ -228,10 +228,10 @@
       "integrity": "sha512-BvcDWYZRWVuDeXTYZWxekQNO5D4kO55aArwZOTFXw6rlLQA8ZaDicJR1sO47h+HrnCiDFiww0fSPV0d713KBGQ==",
       "dev": true,
       "requires": {
-        "@babel/helper-member-expression-to-functions": "7.0.0",
-        "@babel/helper-optimise-call-expression": "7.0.0",
-        "@babel/traverse": "7.1.4",
-        "@babel/types": "7.1.3"
+        "@babel/helper-member-expression-to-functions": "^7.0.0",
+        "@babel/helper-optimise-call-expression": "^7.0.0",
+        "@babel/traverse": "^7.1.0",
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-simple-access": {
@@ -240,8 +240,8 @@
       "integrity": "sha512-Vk+78hNjRbsiu49zAPALxTb+JUQCz1aolpd8osOF16BGnLtseD21nbHgLPGUwrXEurZgiCOUmvs3ExTu4F5x6w==",
       "dev": true,
       "requires": {
-        "@babel/template": "7.1.2",
-        "@babel/types": "7.1.3"
+        "@babel/template": "^7.1.0",
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-split-export-declaration": {
@@ -250,7 +250,7 @@
       "integrity": "sha512-MXkOJqva62dfC0w85mEf/LucPPS/1+04nmmRMPEBUB++hiiThQ2zPtX/mEWQ3mtzCEjIJvPY8nuwxXtQeQwUag==",
       "dev": true,
       "requires": {
-        "@babel/types": "7.1.3"
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helper-wrap-function": {
@@ -259,10 +259,10 @@
       "integrity": "sha512-R6HU3dete+rwsdAfrOzTlE9Mcpk4RjU3aX3gi9grtmugQY0u79X7eogUvfXA5sI81Mfq1cn6AgxihfN33STjJA==",
       "dev": true,
       "requires": {
-        "@babel/helper-function-name": "7.1.0",
-        "@babel/template": "7.1.2",
-        "@babel/traverse": "7.1.4",
-        "@babel/types": "7.1.3"
+        "@babel/helper-function-name": "^7.1.0",
+        "@babel/template": "^7.1.0",
+        "@babel/traverse": "^7.1.0",
+        "@babel/types": "^7.0.0"
       }
     },
     "@babel/helpers": {
@@ -271,9 +271,9 @@
       "integrity": "sha512-Myc3pUE8eswD73aWcartxB16K6CGmHDv9KxOmD2CeOs/FaEAQodr3VYGmlvOmog60vNQ2w8QbatuahepZwrHiA==",
       "dev": true,
       "requires": {
-        "@babel/template": "7.1.2",
-        "@babel/traverse": "7.1.4",
-        "@babel/types": "7.1.3"
+        "@babel/template": "^7.1.2",
+        "@babel/traverse": "^7.1.0",
+        "@babel/types": "^7.1.2"
       }
     },
     "@babel/highlight": {
@@ -282,9 +282,9 @@
       "integrity": "sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==",
       "dev": true,
       "requires": {
-        "chalk": "2.4.1",
-        "esutils": "2.0.2",
-        "js-tokens": "4.0.0"
+        "chalk": "^2.0.0",
+        "esutils": "^2.0.2",
+        "js-tokens": "^4.0.0"
       },
       "dependencies": {
         "ansi-styles": {
@@ -293,7 +293,7 @@
           "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
           "dev": true,
           "requires": {
-            "color-convert": "1.9.1"
+            "color-convert": "^1.9.0"
           }
         },
         "chalk": {
@@ -302,9 +302,9 @@
           "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
           "dev": true,
           "requires": {
-            "ansi-styles": "3.2.1",
-            "escape-string-regexp": "1.0.5",
-            "supports-color": "5.5.0"
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
           }
         },
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@@ -2814,13 +3045,22 @@
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+          "integrity": "sha512-/kyM18EfinwXZbno9FyUGeFh87KC8HRQBQGildHZbEuRyWFOmv1U10o9BBp8XVZDVNNuQKyIGIu5ZYAAXJ0V2Q==",
+          "dev": true
+        },
+        "json5": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.1.tgz",
+          "integrity": "sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==",
+          "dev": true,
+          "requires": {
+            "minimist": "^1.2.0"
+          }
+        },
+        "loader-utils": {
+          "version": "1.4.0",
+          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-1.4.0.tgz",
+          "integrity": "sha512-qH0WSMBtn/oHuwjy/NucEgbx5dbxxnxup9s4PVXJUDHZBQY+s0NWA9rJf53RBnQZxfch7euUui7hpoAPvALZdA==",
+          "dev": true,
+          "requires": {
+            "big.js": "^5.2.2",
+            "emojis-list": "^3.0.0",
+            "json5": "^1.0.1"
+          }
+        },
+        "tapable": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/tapable/-/tapable-1.1.3.tgz",
+          "integrity": "sha512-4WK/bYZmj8xLr+HUCODHGF1ZFzsYffasLUgEiMBY4fgtltdO6B4WJtlSbPaDTLpYTcGVwM2qLnFTICEcNxs3kA==",
+          "dev": true
+        }
       }
     },
     "webpack-cli": {
@@ -6363,16 +6176,16 @@
       "integrity": "sha512-Cnqo7CeqeSvC6PTdts+dywNi5CRlIPbLx1AoUPK2T6vC1YAugMG3IOoO9DmEscd+Dghw7uRlnzV1KwOe5IrtgQ==",
       "dev": true,
       "requires": {
-        "chalk": "2.4.1",
-        "cross-spawn": "6.0.5",
-        "enhanced-resolve": "4.1.0",
-        "global-modules-path": "2.3.0",
-        "import-local": "2.0.0",
-        "interpret": "1.1.0",
-        "loader-utils": "1.1.0",
-        "supports-color": "5.5.0",
-        "v8-compile-cache": "2.0.2",
-        "yargs": "12.0.2"
+        "chalk": "^2.4.1",
+        "cross-spawn": "^6.0.5",
+        "enhanced-resolve": "^4.1.0",
+        "global-modules-path": "^2.3.0",
+        "import-local": "^2.0.0",
+        "interpret": "^1.1.0",
+        "loader-utils": "^1.1.0",
+        "supports-color": "^5.5.0",
+        "v8-compile-cache": "^2.0.2",
+        "yargs": "^12.0.2"
       },
       "dependencies": {
         "ansi-styles": {
@@ -6381,7 +6194,7 @@
           "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
           "dev": true,
           "requires": {
-            "color-convert": "1.9.1"
+            "color-convert": "^1.9.0"
           }
         },
         "chalk": {
@@ -6390,9 +6203,9 @@
           "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
           "dev": true,
           "requires": {
-            "ansi-styles": "3.2.1",
-            "escape-string-regexp": "1.0.5",
-            "supports-color": "5.5.0"
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
           }
         },
         "enhanced-resolve": {
@@ -6401,9 +6214,9 @@
           "integrity": "sha512-F/7vkyTtyc/llOIn8oWclcB25KdRaiPBpZYDgJHgh/UHtpgT2p2eldQgtQnLtUvfMKPKxbRaQM/hHkvLHt1Vng==",
           "dev": true,
           "requires": {
-            "graceful-fs": "4.1.11",
-            "memory-fs": "0.4.1",
-            "tapable": "1.0.0"
+            "graceful-fs": "^4.1.2",
+            "memory-fs": "^0.4.0",
+            "tapable": "^1.0.0"
           }
         },
         "has-flag": {
@@ -6418,19 +6231,29 @@
           "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
           "dev": true,
           "requires": {
-            "has-flag": "3.0.0"
+            "has-flag": "^3.0.0"
           }
         }
       }
     },
+    "webpack-log": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/webpack-log/-/webpack-log-2.0.0.tgz",
+      "integrity": "sha512-cX8G2vR/85UYG59FgkoMamwHUIkSSlV3bBMRsbxVXVUk2j6NleCKjQ/WE9eYg9WY4w25O9w8wKP4rzNZFmUcUg==",
+      "dev": true,
+      "requires": {
+        "ansi-colors": "^3.0.0",
+        "uuid": "^3.3.2"
+      }
+    },
     "webpack-sources": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.1.0.tgz",
-      "integrity": "sha512-aqYp18kPphgoO5c/+NaUvEeACtZjMESmDChuD3NBciVpah3XpMEU9VAAtIaB1BsfJWWTSdv8Vv1m3T0aRk2dUw==",
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.4.3.tgz",
+      "integrity": "sha512-lgTS3Xhv1lCOKo7SA5TjKXMjpSM4sBjNV5+q2bqesbSPs5FjGmU6jjtBSkX9b4qW87vDIsCIlUPOEhbZrMdjeQ==",
       "dev": true,
       "requires": {
-        "source-list-map": "2.0.0",
-        "source-map": "0.6.1"
+        "source-list-map": "^2.0.0",
+        "source-map": "~0.6.1"
       },
       "dependencies": {
         "source-map": {
@@ -6441,19 +6264,13 @@
         }
       }
     },
-    "whet.extend": {
-      "version": "0.9.9",
-      "resolved": "https://registry.npmjs.org/whet.extend/-/whet.extend-0.9.9.tgz",
-      "integrity": "sha1-+HfVv2SMl+WqVC+twW1qJZucEaE=",
-      "dev": true
-    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
       "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "dev": true,
       "requires": {
-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
       }
     },
     "which-module": {
@@ -6463,12 +6280,12 @@
       "dev": true
     },
     "worker-farm": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.6.0.tgz",
-      "integrity": "sha512-6w+3tHbM87WnSWnENBUvA2pxJPLhQUg5LKwUQHq3r+XPhIM+Gh2R5ycbwPCyuGbNg+lPgdcnQUhuC02kJCvffQ==",
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.7.0.tgz",
+      "integrity": "sha512-rvw3QTZc8lAxyVrqcSGVm5yP/IJ2UcB3U0graE3LCFoZ0Yn2x4EoVSqJKdB/T5M+FLcRPjz4TDacRf3OCfNUzw==",
       "dev": true,
       "requires": {
-        "errno": "0.1.7"
+        "errno": "~0.1.7"
       }
     },
     "wrap-ansi": {
@@ -6477,8 +6294,8 @@
       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
       "dev": true,
       "requires": {
-        "string-width": "1.0.2",
-        "strip-ansi": "3.0.1"
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
       },
       "dependencies": {
         "is-fullwidth-code-point": {
@@ -6487,7 +6304,7 @@
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
           "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
           }
         },
         "string-width": {
@@ -6496,9 +6313,9 @@
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
           "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
           }
         }
       }
@@ -6539,18 +6356,18 @@
       "integrity": "sha512-e7SkEx6N6SIZ5c5H22RTZae61qtn3PYUE8JYbBFlK9sYmh3DMQ6E5ygtaG/2BW0JZi4WGgTR2IV5ChqlqrDGVQ==",
       "dev": true,
       "requires": {
-        "cliui": "4.1.0",
-        "decamelize": "2.0.0",
-        "find-up": "3.0.0",
-        "get-caller-file": "1.0.3",
-        "os-locale": "3.0.1",
-        "require-directory": "2.1.1",
-        "require-main-filename": "1.0.1",
-        "set-blocking": "2.0.0",
-        "string-width": "2.1.1",
-        "which-module": "2.0.0",
-        "y18n": "4.0.0",
-        "yargs-parser": "10.1.0"
+        "cliui": "^4.0.0",
+        "decamelize": "^2.0.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^3.0.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^1.0.1",
+        "set-blocking": "^2.0.0",
+        "string-width": "^2.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^3.2.1 || ^4.0.0",
+        "yargs-parser": "^10.1.0"
       },
       "dependencies": {
         "decamelize": {
@@ -6568,7 +6385,7 @@
           "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
           "dev": true,
           "requires": {
-            "locate-path": "3.0.0"
+            "locate-path": "^3.0.0"
           }
         },
         "locate-path": {
@@ -6577,8 +6394,8 @@
           "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
           "dev": true,
           "requires": {
-            "p-locate": "3.0.0",
-            "path-exists": "3.0.0"
+            "p-locate": "^3.0.0",
+            "path-exists": "^3.0.0"
           }
         },
         "p-limit": {
@@ -6587,7 +6404,7 @@
           "integrity": "sha512-fl5s52lI5ahKCernzzIyAP0QAZbGIovtVHGwpcu1Jr/EpzLVDI2myISHwGqK7m8uQFugVWSrbxH7XnhGtvEc+A==",
           "dev": true,
           "requires": {
-            "p-try": "2.0.0"
+            "p-try": "^2.0.0"
           }
         },
         "p-locate": {
@@ -6596,7 +6413,7 @@
           "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
           "dev": true,
           "requires": {
-            "p-limit": "2.0.0"
+            "p-limit": "^2.0.0"
           }
         },
         "p-try": {
@@ -6613,7 +6430,7 @@
       "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
       "dev": true,
       "requires": {
-        "camelcase": "4.1.0"
+        "camelcase": "^4.1.0"
       }
     }
   }
diff --git a/package.json b/package.json
index b3c2b84..0f98dd2 100644
--- a/package.json
+++ b/package.json
@@ -23,13 +23,13 @@
     "@babel/core": "^7.1.2",
     "@babel/preset-env": "^7.1.0",
     "babel-loader": "^8.0.4",
-    "copy-webpack-plugin": "^4.5.1",
-    "css-loader": "^0.28.11",
+    "copy-webpack-plugin": "^5.1.1",
+    "css-loader": "^3.4.2",
     "rimraf": "^2.6.2",
     "vue": "^2.5.16",
     "vue-loader": "^14.2.2",
     "vue-template-compiler": "^2.5.16",
-    "webpack": "^4.6.0",
+    "webpack": "^4.42.0",
     "webpack-cli": "^3.1.2"
   }
 }
diff --git a/src/sl-vue-tree.d.ts b/src/sl-vue-tree.d.ts
index 7704f57..c1c5ddc 100644
--- a/src/sl-vue-tree.d.ts
+++ b/src/sl-vue-tree.d.ts
@@ -45,9 +45,11 @@ export default class SlVueTree<TDataType> extends Vue {
     getLastNode(): ISlTreeNode<TDataType>;
     getNextNode(path: number[], filter?: (node: ISlTreeNode<TDataType>) => boolean): ISlTreeNode<TDataType>;
     getPrevNode(path: number[], filter?: (node: ISlTreeNode<TDataType>) => boolean): ISlTreeNode<TDataType>;
-    updateNode(nodeToUpdate: ISlTreeNode<TDataType>, patch: Partial<ISlTreeNodeModel<TDataType>>): void;
+    updateNode(path: number[], patch: Partial<ISlTreeNodeModel<TDataType>>): void;
     getSelected(): ISlTreeNode<TDataType>[];
     traverse(cb: (node: ISlTreeNode<TDataType>, nodeModel: ISlTreeNodeModel<TDataType>, siblings: ISlTreeNodeModel<TDataType>[]) => boolean | void, nodeModels?: ISlTreeNodeModel<TDataType>[], parentPath?: number[]): ISlTreeNode<TDataType>[] | boolean;
     getNodeEl(path: number[]): HTMLElement;
     select(path: number[], addToSelection?: boolean): ISlTreeNode<TDataType>;
+    remove(paths: number[][]): void;
+    insert(cursorPosition: ICursorPosition<TDataType>, nodeModel:ISlTreeNodeModel<TDataType>): void;
 }
diff --git a/src/sl-vue-tree.js b/src/sl-vue-tree.js
index db625f5..585871f 100644
--- a/src/sl-vue-tree.js
+++ b/src/sl-vue-tree.js
@@ -87,6 +87,10 @@ export default {
       return this.getParent().cursorPosition;
     },
 
+    depth() {
+      return this.gaps.length
+    },
+
     nodes() {
       if (this.isRoot) {
         const nodeModels = this.copy(this.currentValue);
diff --git a/src/sl-vue-tree.vue b/src/sl-vue-tree.vue
index ef2798a..39363ae 100644
--- a/src/sl-vue-tree.vue
+++ b/src/sl-vue-tree.vue
@@ -14,13 +14,14 @@
         <div
           class="sl-vue-tree-cursor sl-vue-tree-cursor_before"
           @dragover.prevent
-          :style="{ visibility:
-            cursorPosition &&
-            cursorPosition.node.pathStr === node.pathStr &&
-            cursorPosition.placement === 'before' ?
-             'visible' :
-             'hidden'
-           }"
+          :style="{
+        'visibility': cursorPosition &&
+          cursorPosition.node.pathStr === node.pathStr &&
+          cursorPosition.placement === 'before' ?
+          'visible' :
+          'hidden',
+        '--depth': depth
+      }"
         >
           <!-- suggested place for node insertion  -->
         </div>
@@ -121,13 +122,13 @@
             class="sl-vue-tree-cursor sl-vue-tree-cursor_after"
             @dragover.prevent
             :style="{
-              visibility:
-               cursorPosition &&
-               cursorPosition.node.pathStr === node.pathStr &&
-               cursorPosition.placement === 'after' ?
-               'visible' :
-               'hidden'
-             }"
+        'visibility': cursorPosition &&
+          cursorPosition.node.pathStr === node.pathStr &&
+          cursorPosition.placement === 'after' ?
+          'visible' :
+          'hidden',
+        '--depth': depth
+      }"
         >
           <!-- suggested place for node insertion  -->
         </div>