import { ChangeDetectorRef, Component, Injectable, OnInit, AfterViewInit, ViewChild, ElementRef, Renderer2 } from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';

// https://blog.angularindepth.com/exploring-angular-dom-abstractions-80b3ebcfc02
// https://blog.angularindepth.com/the-mechanics-of-dom-updates-in-angular-3b2970d5c03d
const URL = 'https://my-json-server.typicode.com/spham-xyz/cars/cars';

@Component({
  selector: 'my-app',
  templateUrl: 'app/app.template.html'
})
export class AppComponent implements OnInit, AfterViewInit{

  cars: any[];
  cars1: any[];
  cols: any[];
  colors: SelectItem[];
  cities: SelectItem[];
  selectedColor: string;
  selectedState: string;
  
  display: boolean = false;  
  carData: string = '';
   
  colorNames = ['Orange', 'Black', 'Gray', 'Blue', 'Orange', 'Yellow'];
  colors = this.colorNames.map((name) => {
    return { label: name, value: name }
  });  
  
  stateNames = ['Alabama', 'Alaska', 'California'];
  states = this.stateNames.map((val, i, stateNames) => {
      return { label: val, value: val }
  });  
  cityNames = [
    {state: 'Alabama', city: 'Birmingham'}, 
    {state: 'Alabama', city: 'Huntsville'}, 
    {state: 'Alabama', city: 'Montgomery'},
    {state: 'Alaska', city: 'Anchorage'}, 
    {state: 'Alaska', city: 'Juneau'},
    {state: 'California', city: 'Fresno'},
    {state: 'California', city: 'Perris'}
  ];
  
  // https://codeburst.io/javascript-learn-to-chain-map-filter-and-reduce-acd2d0562cd4
  // https://hackernoon.com/understanding-map-filter-and-reduce-in-javascript-5df1c7eee464
  getCities(state):any[] {
    //let cityArray = this.cityNames.filter((el) => { return el.state === state });
    //this.cities = cityArray.map((el) => {
    //  return { label: el.city, value: el.city }
    //});
    
    this.cities = this.cityNames
                      .filter((el) => { return el.state === state })
                      .map((el) => { return { label: el.city, value: el.city } });
  }

  constructor(private cdref: ChangeDetectorRef, private http: HttpClient) { }
   
  ngOnInit() {
    console.log('OnInit: ' + this.selectedState);
    //this.getCities(this.selectedState);
    
    this.cols = [
      { field: 'vin', header: 'Vin' },
      { field: 'year', header: 'Year' },
      { field: 'brand', header: 'Brand' },
      { field: 'color', header: 'Color' }
    ];
    
    this.cars = [
      {"brand": "VW", "year": 2012, "color": "Orange", "vin": "dsad231ff"},
      {"brand": "Audi", "year": 2011, "color": "Black", "vin": "gwregre345"},
      {"brand": "Renault", "year": 2005, "color": "Gray", "vin": "h354htr"},
      {"brand": "BMW", "year": 2003, "color": "Blue", "vin": "j6w54qgh"},
      {"brand": "Mercedes", "year": 1995, "color": "Orange", "vin": "hrtwy34"},
      {"brand": "Volvo", "year": 2005, "color": "Black", "vin": "jejtyj"},
      {"brand": "Honda", "year": 2012, "color": "Yellow", "vin": "g43gr"},
      {"brand": "Jaguar", "year": 2013, "color": "Orange", "vin": "greg34"},
      {"brand": "Ford", "year": 2000, "color": "Black", "vin": "h54hw5"},
      {"brand": "Fiat", "year": 2013, "color": "Red", "vin": "245t2s"},
      {"brand": "VW", "year": 2012, "color": "Orange", "vin": "dsad231ff"},
      {"brand": "Audi", "year": 2011, "color": "Black", "vin": "gwregre345"},
      {"brand": "Renault", "year": 2005, "color": "Gray", "vin": "h354htr"},
      {"brand": "BMW", "year": 2003, "color": "Blue", "vin": "j6w54qgh"},
      {"brand": "Mercedes", "year": 1995, "color": "Orange", "vin": "hrtwy34"},
      {"brand": "Volvo", "year": 2005, "color": "Black", "vin": "jejtyj"},
      {"brand": "Honda", "year": 2012, "color": "Yellow", "vin": "g43gr"},
      {"brand": "Jaguar", "year": 2013, "color": "Orange", "vin": "greg34"},
      {"brand": "Ford", "year": 2000, "color": "Black", "vin": "h54hw5"},
      {"brand": "Fiat", "year": 2013, "color": "Red", "vin": "245t2s"},
      {"brand": "VW", "year": 2012, "color": "Orange", "vin": "dsad231ff"},
      {"brand": "Audi", "year": 2011, "color": "Black", "vin": "gwregre345"},
      {"brand": "Renault", "year": 2005, "color": "Gray", "vin": "h354htr"},
      {"brand": "BMW", "year": 2003, "color": "Blue", "vin": "j6w54qgh"},
      {"brand": "Mercedes", "year": 1995, "color": "Orange", "vin": "hrtwy34"},
      {"brand": "Volvo", "year": 2005, "color": "Black", "vin": "jejtyj"},
      {"brand": "Honda", "year": 2012, "color": "Yellow", "vin": "g43gr"},
      {"brand": "Jaguar", "year": 2013, "color": "Orange", "vin": "greg34"},
      {"brand": "Ford", "year": 2000, "color": "Black", "vin": "h54hw5"},
      {"brand": "Fiat", "year": 2013, "color": "Red", "vin": "245t2s"}
    ];

    this.http.get(URL).subscribe(
      data => this.cars1 = data
    );
  }

  ngAfterViewInit() {
    console.log('AfterViewInit: ' +  this.selectedState);
    this.getCities(this.selectedState);
    this.cdref.detectChanges();
  }  
  
  selectRow(event) {
    this.display = true;
    this.carData = event.data.vin;  
    console.log(event.data.vin);
  }
  
  log(data):void {
    console.log(data);
    console.log('selectedColor: ' + this.selectedColor);
  }
  
  
}
import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule, ReactiveFormsModule }    from '@angular/forms';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { HttpClientModule } from '@angular/common/http';

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

// Import PrimeNG modules
import { ButtonModule } from 'primeng/button';
import { DialogModule } from 'primeng/dialog';
import { DropdownModule } from 'primeng/dropdown';
import { TableModule } from 'primeng/table';

@NgModule({
  imports: [ 
        BrowserModule, 
        FormsModule,
        ReactiveFormsModule,
        BrowserAnimationsModule,
        HttpClientModule,
        ButtonModule,
        DialogModule,
        DropdownModule,
        TableModule],
  declarations: [ AppComponent ],
  bootstrap:    [ AppComponent ]
})

export class AppModule { }


/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

import { AppModule } from './app.module';

const platform = platformBrowserDynamic();
platform.bootstrapModule(AppModule);
body {
  padding: 2em;
  font-family: Arial, Helvetica, sans-serif;
}
<!DOCTYPE html>
<html>
  <head>
    <title>Angular QuickStart</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="styles.css">
    
    <!-- PrimeNG style dependencies -->
    <link rel="stylesheet" href="https://unpkg.com/primeng@5.2.4/resources/themes/omega/theme.css" />
    <!-- <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" /> -->
    <link rel="stylesheet" href="https://unpkg.com/font-awesome@4.7.0/css/font-awesome.min.css" />
    <link rel="stylesheet" href="https://unpkg.com/primeng@5.2.4/resources/primeng.min.css" />

    <!-- 1. Load libraries -->
    <!-- Polyfill for older browsers -->
    <script src="https://unpkg.com/core-js/client/shim.min.js"></script>
    <script src="https://unpkg.com/zone.js@0.8.23?main=browser"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.12"></script>
    <script src="https://unpkg.com/systemjs@0.19.47/dist/system.src.js"></script>    
    
    <!-- 2. Configure SystemJS -->
    <script src="systemjs.config.js"></script>
    
  </head>

  <!-- 3. Display the application -->
  <body>
    <my-app>Loading...</my-app>
  </body>
</html>


<!-- 
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->
/**
 * WEB ANGULAR VERSION
 * (based on systemjs.config.js in angular.io)
 * System configuration for Angular samples
 * Adjust as necessary for your application needs.
 */
(function(global) {
  System.config({
    // DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
    transpiler: 'ts',
    typescriptOptions: {
      // Copy of compiler options in standard tsconfig.json
      "target": "es5",
      "module": "system",
      "moduleResolution": "node",
      "sourceMap": true,
      "emitDecoratorMetadata": true,
      "experimentalDecorators": true,
      "noImplicitAny": true,
      "suppressImplicitAnyIndexErrors": true
    },
    meta: {
      'typescript': {
        "exports": "ts"
      }
    },
    paths: {
      // paths serve as alias
      'npm:': 'https://unpkg.com/'
    },
    // map tells the System loader where to look for things
    // https://stackoverflow.com/questions/45634559/systemjs-xhr-error-angular-commobundles-common-umd-js-http-not-found
    map: {
      // our app is within the app folder
      app: 'app',

      // angular bundles
      '@angular/animations': 'npm:@angular/animations@5.2.9/bundles/animations.umd.js',
      '@angular/animations/browser': 'npm:@angular/animations@5.2.9/bundles/animations-browser.umd.js',
      '@angular/core': 'npm:@angular/core@5.2.9/bundles/core.umd.js',
      '@angular/common': 'npm:@angular/common@5.2.9/bundles/common.umd.js',
      '@angular/compiler': 'npm:@angular/compiler@5.2.9/bundles/compiler.umd.js',
      '@angular/platform-browser': 'npm:@angular/platform-browser@5.2.9/bundles/platform-browser.umd.js',
      '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@5.2.9/bundles/platform-browser-dynamic.umd.js',
      '@angular/platform-browser/animations': 'npm:@angular/platform-browser@5.2.9/bundles/platform-browser-animations.umd.js',
      '@angular/common/http': 'npm:@angular/common@5.2.9/bundles/common-http.umd.js',
      '@angular/router': 'npm:@angular/router@5.2.9/bundles/router.umd.js',
      '@angular/forms': 'npm:@angular/forms@5.2.9/bundles/forms.umd.js',
      '@angular/upgrade': 'npm:@angular/upgrade@5.2.9/bundles/upgrade.umd.js',
      '@angular/upgrade/static': 'npm:@angular/upgrade@5.2.9/bundles/upgrade-static.umd.js',

      // other libraries
      'rxjs': 'npm:rxjs',
      'tslib': 'npm:tslib/tslib.js',
      'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
      'ts': 'npm:plugin-typescript@4.0.10/lib/plugin.js',
      'typescript': 'npm:typescript@2.8.1/lib/typescript.js',
      'primeng': 'npm:primeng@5.2.4'

    },
    // packages tells the System loader how to load when no filename and/or no extension
    packages: {
      app: {
        main: './main.ts',
        defaultExtension: 'ts'
      },
      rxjs: {
        defaultExtension: 'js'
      },
      primeng: {
        defaultExtension: 'js'
      }
    }
  });

  if (!global.noBootstrap) {
    bootstrap();
  }

  // Bootstrap the `AppModule`(skip the `app/main.ts` that normally does this)
  function bootstrap() {
    console.log('Auto-bootstrapping');

    // Stub out `app/main.ts` so System.import('app') doesn't fail if called in the index.html
    System.set(System.normalizeSync('app/main.ts'), System.newModule({}));

    // bootstrap and launch the app (equivalent to standard main.ts)
    Promise.all([
        System.import('@angular/platform-browser-dynamic'),
        getAppModule()
      ])
      .then(function(imports) {
        var platform = imports[0];
        var app = imports[1];
        platform.platformBrowserDynamic().bootstrapModule(app.AppModule);
      })
      .catch(function(err) {
        console.error(err);
      });
  }

  // Import AppModule or make the default AppModule if there isn't one
  // returns a promise for the AppModule
  function getAppModule() {
    if (global.noAppModule) {
      return makeAppModule();
    }
    return System.import('app/app.module').catch(makeAppModule)
  }

  function makeAppModule() {
    console.log('No AppModule; making a bare-bones, default AppModule');

    return Promise.all([
        System.import('@angular/core'),
        System.import('@angular/platform-browser'),
        System.import('app/app.component')
      ])
      .then(function(imports) {

        var core = imports[0];
        var browser = imports[1];
        var appComp = imports[2].AppComponent;

        var AppModule = function() {}

        AppModule.annotations = [
          new core.NgModule({
            imports: [browser.BrowserModule],
            declarations: [appComp],
            bootstrap: [appComp]
          })
        ]
        return {
          AppModule: AppModule
        };
      })
  }
})(this);
<p-dialog header="Title" [modal]="true" [(visible)]="display" width="250" height="150">
  {{carData}}
</p-dialog>
<p-dropdown [options]="colors" [(ngModel)]="selectedColor" [autoWidth]="false" (onChange)="log($event.value)"></p-dropdown>
<br />
<p-dropdown [options]="states" [(ngModel)]="selectedState" [autoWidth]="false" (onChange)="getCities($event.value)"></p-dropdown>
<p-dropdown [options]="cities" [autoWidth]="false"></p-dropdown>
<br />
<!--
<p-table [value]="cars" [paginator]="true" [rows]="5" [alwaysShowPaginator]="false">
  <ng-template pTemplate="header">
    <tr>
      <th>#</th>
      <th>Vin</th>
      <th>Year</th>
      <th>Brand</th>
      <th>Color</th>
    </tr>
  </ng-template>
  <ng-template pTemplate="body" let-rowData let-car let-rowIndex="rowIndex">
    <tr>
      <td [ngStyle]="{'text-align':'center'}">{{rowIndex + 1}}</td>
      <td>{{car.vin}}</td>
      <td>{{car.year}}</td>
      <td>{{car.brand}}</td>
      <td>
        <p-dropdown appendTo="body" [options]="colors" [(ngModel)]="car.color" [style]="{'width':'100%'}" (onChange)="log($event.value)"></p-dropdown>
      </td>
    </tr>
  </ng-template>
</p-table>
-->
<h4>Dynamic Columns</h4>
<p-table #dt [value]="cars1" [columns]="cols" [paginator]="true" [alwaysShowPaginator]="false" [rows]="5" [rowsPerPageOptions]="[5,10,20]" [scrollable]="true" selectionMode="single" (onRowSelect)="selectRow($event)">
  <ng-template pTemplate="caption">
    <div style="text-align: right">
      <i class="fa fa-search" style="margin:4px 4px 0 0"></i>
      <input type="text" pInputText size="50" placeholder="Global Filter" (input)="dt.filterGlobal($event.target.value, 'contains')">
    </div>
  </ng-template>
  <ng-template pTemplate="header" let-columns>
    <tr>
      <th *ngFor="let col of columns" class="ui-resizable-column" [pSortableColumn]="col.field">
        {{col.header}}
        <p-sortIcon [field]="col.field"></p-sortIcon>
      </th>
    </tr>
    <!--    
    <tr>
      <th *ngFor="let col of columns">
        <p-dropdown [options]="colors" [autoWidth]="false" [style]="{'width':'100%'}" appendTo="body"></p-dropdown>
      </th>
    </tr>
-->
  </ng-template>
  <ng-template pTemplate="body" let-rowData let-columns="columns">
    <!-- <tr [pSelectableRow]="rowData" [pSelectableRowDblClick]="rowData" (dblclick)="onRowDblClick($event, rowData)"> -->
    <tr [pSelectableRow]="rowData" [pSelectableRowDblClick]="rowData">
      <td *ngFor="let col of columns" class="ui-resizable-column" [ngSwitch]="col.field">
        <span *ngSwitchCase="'color'"><p-dropdown appendTo="body" [options]="colors" [(ngModel)]="rowData[col.field]" [style]="{'width':'100%','overflow':'visible'}" (onChange)="log($event.value)"></p-dropdown></span>
        <span *ngSwitchDefault>{{rowData[col.field]}}</span>
      </td>
    </tr>
  </ng-template>
</p-table>


<p-footer>
  <div class="ui-dialog-buttonpane ui-widget-content ui-helper-clearfix">
    <button type="button" pButton icon="fa-close" (click)="display=false" label="No"></button>
    <button type="button" pButton icon="fa-check" (click)="display=false" label="Yes"></button>
  </div>
</p-footer>


<p-table [value]="cars" [paginator]="true" [rows]="10" [rowsPerPageOptions]="[5,10,20]" [scrollable]="true">
  <ng-template pTemplate="header">
    <tr>
      <th>#</th>
      <th>Vin</th>
      <th>Year</th>
      <th>Brand</th>
      <th>Color</th>
    </tr>
  </ng-template>
  <ng-template pTemplate="body" let-rowData let-rowIndex="rowIndex">
    <tr>
      <td>{{rowIndex+1}}</td>
      <td pEditableColumn>
        <p-cellEditor>
          <ng-template pTemplate="input">
            <input type="text" [(ngModel)]="rowData.vin">
          </ng-template>
          <ng-template pTemplate="output">
            {{rowData.vin}}
          </ng-template>
        </p-cellEditor>
      </td>
      <td pEditableColumn>
        <p-cellEditor>
          <ng-template pTemplate="input">
            <input type="text" [(ngModel)]="rowData.year" required>
          </ng-template>
          <ng-template pTemplate="output">
            {{rowData.year}}
          </ng-template>
        </p-cellEditor>
      </td>
      <td pEditableColumn>
        <p-cellEditor>
          <ng-template pTemplate="input">
            <input type="text" [(ngModel)]="rowData.brand">
          </ng-template>
          <ng-template pTemplate="output">
            {{rowData.brand}}
          </ng-template>
        </p-cellEditor>
      </td>
      <td pEditableColumn>
        <p-cellEditor>
          <ng-template pTemplate="input">
            <!-- <input type="text" [(ngModel)]="rowData.color"> -->
            <p-dropdown appendTo="body" [options]="colors" [(ngModel)]="rowData.color" [style]="{'width':'100%'}" (onChange)="log($event.value)"></p-dropdown>
          </ng-template>
          <ng-template pTemplate="output">
            {{rowData.color}}
          </ng-template>
        </p-cellEditor>
      </td>
    </tr>
  </ng-template>
</p-table>
# PrimeNG Issue Template
Please create a test case and attach the link of the plunkr to your github issue report.