psp_panel/src/app/components/tree/tree.component.ts

import { Component, OnInit } from '@angular/core';
import { NodeService } from '../../service/nodeservice';
import { TreeNode } from 'primeng/api';

@Component({
    templateUrl: './tree.component.html'
})
export class TreeComponent implements OnInit {


    files1: TreeNode[];

    files2: TreeNode[];

    files3: TreeNode[];

    selectedFiles1: TreeNode;

    selectedFiles2: TreeNode[];

    selectedFiles3: TreeNode;

    cols: any[];

    constructor(private nodeService: NodeService) {}

    ngOnInit() {
        this.nodeService.getFiles().then(files => this.files1 = files);
        this.nodeService.getFilesystem().then(files => this.files2 = files);
        this.nodeService.getFiles().then(files => {
            this.files3 = [{
                label: 'Root',
                children: files
            }];
        });

        this.cols = [
            { field: 'name', header: 'Name' },
            { field: 'size', header: 'Size' },
            { field: 'type', header: 'Type' }
        ];
    }
}