Nn-angular-tree NPM

nn-angular-tree

Installation

To install this library, run:

$ npm install nn-angular-tree --save

and then from your Angular AppModule:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppComponent } from './app.component';

// Import tree module
import { NNTreeModule } from 'nn-angular-tree';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,

    // tree module
    NNTreeModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

<!-- You can now use tree component in app.component.html -->
<nn-tree [root]="root">
	<ng-template let-node="node" #nnTreeItem> 
		<!-- you can custom tree item by relace this item with your item -->
        <nn-tree-item [node]="node"></nn-tree-item>
    </ng-template>
</nn-tree>

with root follow NNTreeNode class

let root = {label:'root', open: true ,children:[
  {label: 'child 1'},
  {label: 'child 2'},
  {label: 'child 3'}
]}

Feature:

Single/Multiple selection and custom selection with canSelect
Customizable tree item.
Lazy loading
Support a large tree wirh virtual scrolling
Filtering

Input Properties:

showRoot:boolean mean display or hide root node
loadingIcon:string is url of icon when using lazy loading feature
loadingText:string is a message text display when wait for load node.
height/width:number for change size of tree
canSelect is a function with input is NNTreeNode and return boolean. if true, this node can selected, if false this node can be selected. User can custom selection by implement a function and pass it to this property.
selectionMode: string support none/single/multiple selection
selectedNodes is an array of selected nodes.

Support event:

selectionChange: $event is new select node:NNTreeNode
openNode: $event is opened node:NNTreeNode
closeNode: $event is closed node:NNTreeNode

Examples:

<nn-tree [root]="root" (openNode)="onOpenNode($event)">
	<ng-template let-node="node" #nnTreeItem> 
        <nn-tree-item [node]="node"></nn-tree-item> 
    </ng-template>
<nn-tree>