import { Component, OnInit, Input, Output, EventEmitter } from '@angular/core';
const init_options = [{
  value: 'zhejiang',
  label: 'Zhejiang',
  children: [{
    value: 'hangzhou',
    label: 'Hangzhou',
    children: [{
      value: 'xihu',
      label: 'West Lake',
      isLeaf: true
    }],
  }, {
    value: 'ningbo',
    label: 'Ningbo',
    isLeaf: true
  }],
}, {
  value: 'jiangsu',
  label: 'Jiangsu',
  children: [{
    value: 'nanjing',
    label: 'Nanjing',
    children: [{
      value: 'zhonghuamen',
      label: 'Zhong Hua Men',
      isLeaf: true
    }],
  }],
}];

const other_options = [{
  value: 'fujian',
  label: 'Fujian',
  children: [{
    value: 'xiamen',
    label: 'Xiamen',
    children: [{
      value: 'Kulangsu',
      label: 'Kulangsu',
      isLeaf: true
    }],
  }],
}, {
  value: 'guangxi',
  label: 'Guangxi',
  children: [{
    value: 'guilin',
    label: 'Guilin',
    children: [{
      value: 'Lijiang',
      label: 'Li Jiang River',
      isLeaf: true
    }],
  }],
}];

@Component({
    selector: 'cm-cascader-doc-1',
    templateUrl: './cascader-doc-1.component.html',
    styleUrls: ['./cascader-doc-1.component.css']
})

export class CascaderDoc1Component implements OnInit{
	_options:any = null;

  	_value: any[] = null;

  	_console(value:any) {
    	console.log(value);
  	}


    constructor() {}
    ngOnInit() {
      // let's set nzOptions in a asynchronous  way
      setTimeout(() => {
        this._options = init_options;
      }, 100);
    }
  
    _changeNzOptions(): void {
      if (this._options === init_options) {
        this._options = other_options;
      } else {
        this._options = init_options;
      }
    }
  }