import { Component, FormControl, ViewChild } from '@angular/core';
import {Observable} from 'rxjs/Observable';
import {Subject} from 'rxjs/Subject';
import { Dropdown } from 'primeng/primeng';

@Component({
  selector: 'my-app',
  templateUrl: 'app/app.template.html'
})
export class AppComponent implements OnInit {
  
  @ViewChild('ddEditor') ddEditor : FormControl; // = new Dropdown();
  @ViewChild('modelcashdeskprinterseditorsourcedriver') ddEditor2 : FormControl; // = new FormControl();
  

  display: boolean = false;
  
   counter: number = 0;
   
   model: MyData = { id: 101, name: "This is object!!!" };
   
   parents : MyDataParent[] = [{ label: "Sample data: 1", value:11 }, { label: "Sample data: 2", value:12 }, { label: "Sample Data: 3", value:45 }];
   
   selectedParent : MyParentData;
   
   filteredParents : MyDataParent[] = [... this.parents];
   
   constructor(){
    this.selectedParent = this.parents[0];
}
   
   	ngOnInit() {
   	  console.log('ddEditor:');
   	  console.log(this.ddEditor);
   	  console.log('ddEditor2:');
   	  console.log(this.ddEditor2);
   	  
   		this.ddEditor.valueChanges.subscribe(x => {
			console.log("this.printerDriverEdit.onChange");
			console.log(x);
   	  console.log('ddEditor2:');
   	  console.log(this.ddEditor2);

		});

   	/*	this.ddEditor2.valueChanges.subscribe(x => {
			console.log(`ddEditor2 ${x}`);

		});*/

	}
   
   onClick() {
      this.display = !this.display;
   }
   
    filterParents(event) {
        let query = event.query;
        this.filteredParents = this.parents.filter(_ => _.label.search(query) !== -1);
    }

    handleDropdown(event) {
        let query = event.query;
        //this.filteredParents = this.parents.filter(_ => _.label.search(query) !== -1);
        setTimeout(() =>
        this.filteredParents = [... this.parents], 0);
        console.log(this.filteredParents);
    }

    selectedParentChanged(event) {
      console.log(event);
        if(this.selectedParent)
          this.model.parentId = this.selectedParent.value;
    }
    selectedParentClear(event) {
      console.log(event);
      this.selectedParent = null;
      this.model.parentId = null;
    }
    
    selectedParentBlur(event) {
      console.log(event);
        if(!event.target.value)
          this.selectedParentClear(null);
    }
    
    onSelectType(event) {
      
      console.warn(`onSelectType ${event}`);
      console.warn(event);
   }

}

export class MyData
{
  id: number;
  parentId: number;
  name: string;
  parentId2: number = null;
}

export class MyDataParent
{
  id: number;
  name: string;
}
import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule, ReactiveFormsModule }    from '@angular/forms';
import { HttpModule }    from '@angular/http';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

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

// Import PrimeNG modules
import {AccordionModule} from 'primeng/primeng';
import {AutoCompleteModule} from 'primeng/primeng';
import {BreadcrumbModule} from 'primeng/primeng';
import {ButtonModule} from 'primeng/primeng';
import {CalendarModule} from 'primeng/primeng';
import {CarouselModule} from 'primeng/primeng';
import {ChartModule} from 'primeng/primeng';
import {CheckboxModule} from 'primeng/primeng';
import {ChipsModule} from 'primeng/primeng';
import {CodeHighlighterModule} from 'primeng/primeng';
import {ConfirmDialogModule} from 'primeng/primeng';
import {SharedModule} from 'primeng/primeng';
import {ContextMenuModule} from 'primeng/primeng';
import {DataGridModule} from 'primeng/primeng';
import {DataListModule} from 'primeng/primeng';
import {DataScrollerModule} from 'primeng/primeng';
import {DataTableModule} from 'primeng/primeng';
import {DialogModule} from 'primeng/primeng';
import {DragDropModule} from 'primeng/primeng';
import {DropdownModule} from 'primeng/primeng';
import {EditorModule} from 'primeng/primeng';
import {FieldsetModule} from 'primeng/primeng';
import {FileUploadModule} from 'primeng/primeng';
import {GalleriaModule} from 'primeng/primeng';
import {GMapModule} from 'primeng/primeng';
import {GrowlModule} from 'primeng/primeng';
import {InputMaskModule} from 'primeng/primeng';
import {InputSwitchModule} from 'primeng/primeng';
import {InputTextModule} from 'primeng/primeng';
import {InputTextareaModule} from 'primeng/primeng';
import {LightboxModule} from 'primeng/primeng';
import {ListboxModule} from 'primeng/primeng';
import {MegaMenuModule} from 'primeng/primeng';
import {MenuModule} from 'primeng/primeng';
import {MenubarModule} from 'primeng/primeng';
import {MessagesModule} from 'primeng/primeng';
import {MultiSelectModule} from 'primeng/primeng';
import {OrderListModule} from 'primeng/primeng';
import {OverlayPanelModule} from 'primeng/primeng';
import {PaginatorModule} from 'primeng/primeng';
import {PanelModule} from 'primeng/primeng';
import {PanelMenuModule} from 'primeng/primeng';
import {PasswordModule} from 'primeng/primeng';
import {PickListModule} from 'primeng/primeng';
import {ProgressBarModule} from 'primeng/primeng';
import {RadioButtonModule} from 'primeng/primeng';
import {RatingModule} from 'primeng/primeng';
import {ScheduleModule} from 'primeng/primeng';
import {SelectButtonModule} from 'primeng/primeng';
import {SlideMenuModule} from 'primeng/primeng';
import {SliderModule} from 'primeng/primeng';
import {SpinnerModule} from 'primeng/primeng';
import {SplitButtonModule} from 'primeng/primeng';
import {StepsModule} from 'primeng/primeng';
import {TabMenuModule} from 'primeng/primeng';
import {TabViewModule} from 'primeng/primeng';
import {TerminalModule} from 'primeng/primeng';
import {TieredMenuModule} from 'primeng/primeng';
import {ToggleButtonModule} from 'primeng/primeng';
import {ToolbarModule} from 'primeng/primeng';
import {TooltipModule} from 'primeng/primeng';
import {TreeModule} from 'primeng/primeng';
import {TreeTableModule} from 'primeng/primeng';

@NgModule({
  imports: [ 
        BrowserModule, 
        FormsModule,
        ReactiveFormsModule,
        BrowserAnimationsModule,
        AccordionModule,
        AutoCompleteModule,
        BreadcrumbModule,
        ButtonModule,
        CalendarModule,
        CarouselModule,
        ChartModule,
        CheckboxModule,
        ChipsModule,
        CodeHighlighterModule,
        ConfirmDialogModule,
        SharedModule,
        ContextMenuModule,
        DataGridModule,
        DataListModule,
        DataScrollerModule,
        DataTableModule,
        DialogModule,
        DragDropModule,
        DropdownModule,
        EditorModule,
        FieldsetModule,
        FileUploadModule,
        GalleriaModule,
        GMapModule,
        GrowlModule,
        InputMaskModule,
        InputSwitchModule,
        InputTextModule,
        InputTextareaModule,
        LightboxModule,
        ListboxModule,
        MegaMenuModule,
        MenuModule,
        MenubarModule,
        MessagesModule,
        MultiSelectModule,
        OrderListModule,
        OverlayPanelModule,
        PaginatorModule,
        PanelModule,
        PanelMenuModule,
        PasswordModule,
        PickListModule,
        ProgressBarModule,
        RadioButtonModule,
        RatingModule,
        ScheduleModule,
        SelectButtonModule,
        SlideMenuModule,
        SliderModule,
        SpinnerModule,
        SplitButtonModule,
        StepsModule,
        TabMenuModule,
        TabViewModule,
        TerminalModule,
        TieredMenuModule,
        ToggleButtonModule,
        ToolbarModule,
        TooltipModule,
        TreeModule,
        TreeTableModule ],
  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;
}

/*P-autocomplete Dropdown As per LF UI Standards*/
p-autocomplete#lf-autocomplete-dropdown .ui-autocomplete-panel .ui-autocomplete-list{
  padding: 0px !important;
}
p-autocomplete#lf-autocomplete-dropdown .ui-widget-content .ui-state-highlight{
  background-color: #eff2f6 !important;
  background: #eff2f6;
  color: #212121 !Important;
  font-weight: 400;
}

p-autocomplete#lf-autocomplete-dropdown .ui-autocomplete-panel .ui-autocomplete-list-item > span{
  line-height: 18px;
}
p-autocomplete#lf-autocomplete-dropdown .ui-button{
  background-color: #FFFFFF !important;
  color: #205081;
  border: 1px solid #c4d0db;
  border-left: 0;
  border-radius: 0;
}
p-autocomplete#lf-autocomplete-dropdown .ui-autocomplete-input{
  border: 1px solid #F00;
  border: 1px solid #c4d0db;
  border-radius: 0;
  border-right: none !important;
  color: #212121;
  cursor:pointer;
  height: 32px;
}
p-autocomplete#lf-autocomplete-dropdown .ui-shadow{
  box-shadow: none !important;
}
p-autocomplete#lf-autocomplete-dropdown .ui-inputtext:focus{
  box-shadow: none !important;
  /*border: solid 1px #55bee6 !important;*/
}
p-autocomplete#lf-autocomplete-dropdown .ui-autocomplete-panel .ui-autocomplete-list-item{
  border-radius: 0;
  line-height: 40px;
  font-size: 13px;
  padding-left: 5px;
}
p-autocomplete#lf-autocomplete-dropdown .ui-autocomplete-panel .ui-autocomplete-list-item:hover{
  font-weight: 400;
}
p-autocomplete#lf-autocomplete-dropdown .ui-autocomplete
{
  height: 32px;
}


/*End of P-autocomplete Dropdown As per LF UI Standards*/



/*p-dropdown as per LF Standards*/
.lf-dropdown .ui-dropdown-label.ui-inputtext.ui-corner-all {
  color: #212121;
  font-weight: 700;
  font-size: 13px;
  line-height: 18px;
}

.lf-dropdown label.ui-dropdown-label.ui-inputtext.ui-corner-all {
  /*border: 1px solid rgba(0, 0, 0, 0.15);*/
  color: #212121;
  line-height: 32px;
  padding-left: 5px;
}

.lf-dropdown .ui-dropdown.ui-widget.ui-state-default.ui-corner-all.ui-helper-clearfix {
  border: none;
  border: 1px solid #c4d0db;
  border-radius: 0px;
  width: 100% !important;
}

.lf-dropdown .ui-dropdown-panel .ui-dropdown-item:not(.ui-state-highlight):hover {
  background: #eff2f6 !important;
}
.ui-dropdown-label.ui-inputtext.ui-corner-all{
  line-height: 32px;
}
.lf-dropdown .ui-dropdown-trigger.ui-state-default.ui-corner-right {
  border-left: none;
  color: #205081;
  padding: 5px;
  padding-right: 10px;
}

.lf-dropdown .ui-dropdown-panel.ui-dropdown-list:hover {
  background-color: #eff2f6 !important;
  color: #212121 !important;
}

.lf-dropdown .ui-dropdown-item {
  border-radius: 0px !important;
}

.lf-dropdown .ui-inputtext.ui-state-focus,
.ui-inputtext:focus {
  box-shadow: none !important;
}

.lf-dropdown .ui-dropdown-panel:not(.ui-state-highlight).ui-dropdown-item:hover {
  color: #212121 !important;
  background: #eff2f6 !important;
}

.lf-dropdown .ui-dropdown-items.ui-dropdown-list {
  font-weight: 400;
  font-size: 13px;
  color: #212121;
  line-height: 18px;
  padding: 0px;
}

.ui-state-active,
.ui-state-highlight {
  background-color: #dee5ec !important;
}

.lf-dropdown .ui-widget-header.ui-state-highlight,
.ui-widget-content.ui-state-highlight,
.ui-state-highlight.ui-widget-header.ui-state-highlight,
.ui-widget-content.ui-state-highlight,
.ui-state-highlight {
  /*background-color: #F00 !important;*/
  /*background-color: #dee5ec !important;*/
  color: #205081 !important;
  background: transparent !important;
  font-weight: 700 !important;
}
.lf-dropdown .ui-dropdown-panel .ui-dropdown-item{
  padding-left: 5px !important;
  display: block;
}
.lf-dropdown li.ui-dropdown-item{
  line-height: 40px;
}
/*.ui-dropdown-item .ui-state-highlight{*/
/*  background: none;*/
/*  color: #205081 !important;*/
/*  background-color: none !important;*/
/*}*/
.lf-dropdown li.ui-dropdown-item.ui-corner-all.ui-state-highlight{
  background-color: transparent !important;
  color: #205081 !important;
}
.lf-dropdown li.ui-dropdown-item.ui-corner-all.ui-state-highlight: hover{
  background-color: #eff2f6 !important;
}
.ui-shadow{
  box-shadow: none;
}
.lf-dropdown .ui-inputtext:focus{
  box-shadow: none !important;
}
.lf-dropdown .ui-inputtext.ui-state-focus, .ui-inputtext:focus{
  box-shadow: none !important;
}
.lf-dropdown .ui-dropdown-panel.ui-widget-content{
  /*top:25px !important;*/
  top: 38px;
}
.ui-inputtext.ui-state-focus, .ui-inputtext:focus{
  box-shadow:none;
}

/* End of p-dropdown as per LF UI Standards */
<!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@4.2.1/resources/themes/bootstrap/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/primeng@4.2.1/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@0.8.4?main=browser"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.8"></script>
    <script src="https://unpkg.com/systemjs@0.19.39/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": "commonjs",
      "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
    map: {
      // our app is within the app folder
      app: 'app',

     // angular bundles
      '@angular/animations': 'npm:@angular/animations@4.0.0/bundles/animations.umd.js',
      '@angular/animations/browser': 'npm:@angular/animations@4.0.0/bundles/animations-browser.umd.js',
      '@angular/core': 'npm:@angular/core@4.0.0/bundles/core.umd.js',
      '@angular/common': 'npm:@angular/common@4.0.0/bundles/common.umd.js',
      '@angular/compiler': 'npm:@angular/compiler@4.0.0/bundles/compiler.umd.js',
      '@angular/platform-browser': 'npm:@angular/platform-browser@4.0.0/bundles/platform-browser.umd.js',
      '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@4.0.0/bundles/platform-browser-dynamic.umd.js',
      '@angular/platform-browser/animations': 'npm:@angular/platform-browser@4.0.0/bundles/platform-browser-animations.umd.js',
      '@angular/http': 'npm:@angular/http@4.0.0/bundles/http.umd.js',
      '@angular/router': 'npm:@angular/router@4.0.0/bundles/router.umd.js',
      '@angular/forms': 'npm:@angular/forms@4.0.0/bundles/forms.umd.js',
      '@angular/upgrade': 'npm:@angular/upgrade@4.0.0/bundles/upgrade.umd.js',
      '@angular/upgrade/static': 'npm:@angular/upgrade@4.0.0/bundles/upgrade-static.umd.js',

      // other libraries
      'rxjs':                      'npm:rxjs',
      '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@2.0.3/lib/typescript.js',
      'primeng':                   'npm:primeng@4.3.0'

    },
    // 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);

  
<form #f1="ngForm">
  <h3>p-dropdown As per LF UI Standards</h3>
    <p-dropdown class="lf-dropdown" [options]="parents" [(ngModel)]="model.parentId2"   #ddEditor="ngModel"
required (ngModelChange)="onSelectType($event)" name="dd1" #dd1="ngModel"
  ></p-dropdown>
  

  
  <div *ngIf="dd1.invalid && (dd1.dirty || dd1.touched)"
     class="alert alert-danger">

</div>


  <hr/>
  <h3>p-Autocomplete Dropdown As per LF UI Standards</h3>
  <p-autoComplete id="lf-autocomplete-dropdown"
  name="autocomplete"
  [(ngModel)]="selectedParent" 
  [suggestions]="filteredParents" 
  (completeMethod)="filterParents($event)" 
  field="label" 
  dropdown="true" 
  required 
  forceSelection="true"
  (onDropdownClick)="handleDropdown($event)" 
    (onSelect)="selectedParentChanged($event)"
    (onClear)="selectedParentClear($event)"
    (onBlur)="selectedParentBlur($event)"
    ></p-autoComplete>
    
</form>

# PrimeNG Dropdown & autocomplete tests