ionic-framework/ionic/components/search-bar/search-bar.js

import {ElementRef, Pipe} from 'angular2/angular2'
import {Component, Directive} from 'angular2/src/core/annotations_impl/annotations';
import {View} from 'angular2/src/core/annotations_impl/view';

import {ControlGroup, ControlDirective} from 'angular2/forms'

import {IonicComponent} from 'ionic/config/component'

@Component({
  selector: 'ion-search-bar',
  properties: {
    cancelText: 'cancel-text',
    placeholderText: 'placeholder-text',
    list: 'list',
    query: 'query'
  }
})
@View({
  template: `<div class="search-bar-input-container">
             <input (input)="inputChanged($event)" class="search-bar-input" type="search" [attr.placeholder]="placeholderText">
           </div>
           <button class="button search-bar-cancel">{{ cancelText }}</button>`
})
export class SearchBar {
  constructor(
    elementRef: ElementRef,
    cd:ControlDirective
  ) {
    this.domElement = elementRef.domElement
    this.config = SearchBar.config.invoke(this)
    this.controlDirective = cd;
    cd.valueAccessor = this; //ControlDirective should inject CheckboxControlDirective

    setTimeout(() => {
      console.log('Search bar for list', this.list);
      this.query = 'Cats';
    })
  }

  /**
   * Much like ngModel, this is called from our valueAccessor for the attached
   * ControlDirective to update the value internally.
   */
  writeValue(value) {
    this.value = value;
  }

  inputChanged(event) {
    this.value = event.target.value;
    console.log('Search changed', this.value);
    // TODO: Better way to do this?
    this.controlDirective._control().updateValue(event.target.value);
  }
}

/*
export class SearchPipe extends Pipe {
  constructor() {
    super();
    this.state = 0;
  }

  supports(newValue) {
    return true;
  }

  transform(value, ...args) {
    console.log('Transforming', value, args);
    return value;
    //return `${value} state:${this.state ++}`;
  }

  create(cdRef) {
    console.log('REF', cdRef);
    return new SearchPipe(cdRef);
  }
}
*/

new IonicComponent(SearchBar, {
  properties: {
    cancelText: {
      defaults: {
        ios: 'Cancel',
        android: 'Cancel',
        core: 'Cancel'
      }
    },
    placeholderText: {
      defaults: {
        ios: 'Search',
        android: 'Search',
        core: 'Search'
      }
    }
  }
})