angular2/es6/prod/src/common/forms/directives/number_value_accessor.js

Angular 2 - a web framework for modern web apps

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};
import { Directive, ElementRef, Renderer, forwardRef, Provider } from 'angular2/core';
import { NG_VALUE_ACCESSOR } from './control_value_accessor';
import { CONST_EXPR, NumberWrapper } from 'angular2/src/facade/lang';
const NUMBER_VALUE_ACCESSOR = CONST_EXPR(new Provider(NG_VALUE_ACCESSOR, { useExisting: forwardRef(() => NumberValueAccessor), multi: true }));
/**
 * The accessor for writing a number value and listening to changes that is used by the
 * {@link NgModel}, {@link NgFormControl}, and {@link NgControlName} directives.
 *
 *  ### Example
 *  ```
 *  <input type="number" [(ngModel)]="age">
 *  ```
 */
export let NumberValueAccessor = class NumberValueAccessor {
    constructor(_renderer, _elementRef) {
        this._renderer = _renderer;
        this._elementRef = _elementRef;
        this.onChange = (_) => { };
        this.onTouched = () => { };
    }
    writeValue(value) {
        this._renderer.setElementProperty(this._elementRef.nativeElement, 'value', value);
    }
    registerOnChange(fn) {
        this.onChange = (value) => { fn(value == '' ? null : NumberWrapper.parseFloat(value)); };
    }
    registerOnTouched(fn) { this.onTouched = fn; }
};
NumberValueAccessor = __decorate([
    Directive({
        selector: 'input[type=number][ngControl],input[type=number][ngFormControl],input[type=number][ngModel]',
        host: {
            '(change)': 'onChange($event.target.value)',
            '(input)': 'onChange($event.target.value)',
            '(blur)': 'onTouched()'
        },
        bindings: [NUMBER_VALUE_ACCESSOR]
    }), 
    __metadata('design:paramtypes', [Renderer, ElementRef])
], NumberValueAccessor);