combobox in angulardart

combobox.dart

import 'dart:html';
import 'package:angular2/angular2.dart';
import 'package:logging/logging.dart';

@Component(selector: 'combobox-control',
    template: """

               <select [(ngModel)]="selectedValue" >

        <option  *ngFor="let obj of source"  [ngValue]="obj">{{displayGetter(obj)}}</option>

    </select>

 """)
class ComboboxControl  implements OnInit {

  final Logger log = new Logger('ComboboxControl');


  @Input()
  DisplayValueGetter displayGetter = (dynamic o)=> o?.toString();

  List _source = [new Object()];

  List get source => _source;

  String placeholder = '';


  int currentIndex = 0;


  @Input()
  void set source(List sourceValues){
    _source = sourceValues;
  }


  List filteredValues = [];


  @Output()
  EventEmitter selectedValueChange = new EventEmitter<dynamic>();


  Object _selectedValue;

  Object get selectedValue => _selectedValue;


  @Input()
  void set selectedValue(Object newVal){
    if(newVal != selectedValue ){
      _selectedValue = newVal;
     selectedValueChange.emit(_selectedValue);
    }
  }


  @override
  ngOnInit() {
    // TODO: implement ngOnInit
  }
}

typedef String DisplayValueGetter(dynamic o);