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

Angular 2 - a web framework for modern web apps

'use strict';var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
    switch (arguments.length) {
        case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
        case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
        case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
    }
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var metadata_1 = require('angular2/src/core/metadata');
var linker_1 = require('angular2/src/core/linker');
var render_1 = require('angular2/src/core/render');
var di_1 = require('angular2/src/core/di');
var control_value_accessor_1 = require('./control_value_accessor');
var lang_1 = require('angular2/src/facade/lang');
var shared_1 = require('./shared');
var NUMBER_VALUE_ACCESSOR = lang_1.CONST_EXPR(new di_1.Provider(control_value_accessor_1.NG_VALUE_ACCESSOR, { useExisting: di_1.forwardRef(function () { return 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" [(ng-model)]="age">
 *  ```
 */
var NumberValueAccessor = (function () {
    function NumberValueAccessor(_renderer, _elementRef) {
        this._renderer = _renderer;
        this._elementRef = _elementRef;
        this.onChange = function (_) { };
        this.onTouched = function () { };
    }
    NumberValueAccessor.prototype.writeValue = function (value) { shared_1.setProperty(this._renderer, this._elementRef, 'value', value); };
    NumberValueAccessor.prototype.registerOnChange = function (fn) {
        this.onChange = function (value) { fn(lang_1.NumberWrapper.parseFloat(value)); };
    };
    NumberValueAccessor.prototype.registerOnTouched = function (fn) { this.onTouched = fn; };
    NumberValueAccessor = __decorate([
        metadata_1.Directive({
            selector: 'input[type=number][ng-control],input[type=number][ng-form-control],input[type=number][ng-model]',
            host: {
                '(change)': 'onChange($event.target.value)',
                '(input)': 'onChange($event.target.value)',
                '(blur)': 'onTouched()'
            },
            bindings: [NUMBER_VALUE_ACCESSOR]
        }), 
        __metadata('design:paramtypes', [render_1.Renderer, linker_1.ElementRef])
    ], NumberValueAccessor);
    return NumberValueAccessor;
})();
exports.NumberValueAccessor = NumberValueAccessor;
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