angular2
Version:
Angular 2 - a web framework for modern web apps
116 lines • 14.8 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { Directive, ElementRef, Renderer, forwardRef, Provider, Input, Injector, Injectable } from 'angular2/core';
import { NG_VALUE_ACCESSOR } from 'angular2/src/common/forms/directives/control_value_accessor';
import { NgControl } from 'angular2/src/common/forms/directives/ng_control';
import { CONST_EXPR, isPresent } from 'angular2/src/facade/lang';
import { ListWrapper } from 'angular2/src/facade/collection';
const RADIO_VALUE_ACCESSOR = CONST_EXPR(new Provider(NG_VALUE_ACCESSOR, { useExisting: forwardRef(() => RadioControlValueAccessor), multi: true }));
/**
* Internal class used by Angular to uncheck radio buttons with the matching name.
*/
export let RadioControlRegistry = class {
constructor() {
this._accessors = [];
}
add(control, accessor) {
this._accessors.push([control, accessor]);
}
remove(accessor) {
var indexToRemove = -1;
for (var i = 0; i < this._accessors.length; ++i) {
if (this._accessors[i][1] === accessor) {
indexToRemove = i;
}
}
ListWrapper.removeAt(this._accessors, indexToRemove);
}
select(accessor) {
this._accessors.forEach((c) => {
if (c[0].control.root === accessor._control.control.root && c[1] !== accessor) {
c[1].fireUncheck();
}
});
}
};
RadioControlRegistry = __decorate([
Injectable(),
__metadata('design:paramtypes', [])
], RadioControlRegistry);
/**
* The value provided by the forms API for radio buttons.
*/
export class RadioButtonState {
constructor(checked, value) {
this.checked = checked;
this.value = value;
}
}
/**
* The accessor for writing a radio control value and listening to changes that is used by the
* {@link NgModel}, {@link NgFormControl}, and {@link NgControlName} directives.
*
* ### Example
* ```
* @Component({
* template: `
* <input type="radio" name="food" [(ngModel)]="foodChicken">
* <input type="radio" name="food" [(ngModel)]="foodFish">
* `
* })
* class FoodCmp {
* foodChicken = new RadioButtonState(true, "chicken");
* foodFish = new RadioButtonState(false, "fish");
* }
* ```
*/
export let RadioControlValueAccessor = class {
constructor(_renderer, _elementRef, _registry, _injector) {
this._renderer = _renderer;
this._elementRef = _elementRef;
this._registry = _registry;
this._injector = _injector;
this.onChange = () => { };
this.onTouched = () => { };
}
ngOnInit() {
this._control = this._injector.get(NgControl);
this._registry.add(this._control, this);
}
ngOnDestroy() { this._registry.remove(this); }
writeValue(value) {
this._state = value;
if (isPresent(value) && value.checked) {
this._renderer.setElementProperty(this._elementRef.nativeElement, 'checked', true);
}
}
registerOnChange(fn) {
this._fn = fn;
this.onChange = () => {
fn(new RadioButtonState(true, this._state.value));
this._registry.select(this);
};
}
fireUncheck() { this._fn(new RadioButtonState(false, this._state.value)); }
registerOnTouched(fn) { this.onTouched = fn; }
};
__decorate([
Input(),
__metadata('design:type', String)
], RadioControlValueAccessor.prototype, "name", void 0);
RadioControlValueAccessor = __decorate([
Directive({
selector: 'input[type=radio][ngControl],input[type=radio][ngFormControl],input[type=radio][ngModel]',
host: { '(change)': 'onChange()', '(blur)': 'onTouched()' },
providers: [RADIO_VALUE_ACCESSOR]
}),
__metadata('design:paramtypes', [Renderer, ElementRef, RadioControlRegistry, Injector])
], RadioControlValueAccessor);
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{\n  Directive,\n  ElementRef,\n  Renderer,\n  Self,\n  forwardRef,\n  Provider,\n  Attribute,\n  Input,\n  OnInit,\n  OnDestroy,\n  Injector,\n  Injectable\n} from 'angular2/core';\nimport {\n  NG_VALUE_ACCESSOR,\n  ControlValueAccessor\n} from 'angular2/src/common/forms/directives/control_value_accessor';\nimport {NgControl} from 'angular2/src/common/forms/directives/ng_control';\nimport {CONST_EXPR, looseIdentical, isPresent} from 'angular2/src/facade/lang';\nimport {ListWrapper} from 'angular2/src/facade/collection';\n\nconst RADIO_VALUE_ACCESSOR = CONST_EXPR(new Provider(\n    NG_VALUE_ACCESSOR, {useExisting: forwardRef(() => RadioControlValueAccessor), multi: true}));\n\n\n/**\n * Internal class used by Angular to uncheck radio buttons with the matching name.\n */\n@Injectable()\nexport class RadioControlRegistry {\n  private _accessors: any[] = [];\n\n  add(control: NgControl, accessor: RadioControlValueAccessor) {\n    this._accessors.push([control, accessor]);\n  }\n\n  remove(accessor: RadioControlValueAccessor) {\n    var indexToRemove = -1;\n    for (var i = 0; i < this._accessors.length; ++i) {\n      if (this._accessors[i][1] === accessor) {\n        indexToRemove = i;\n      }\n    }\n    ListWrapper.removeAt(this._accessors, indexToRemove);\n  }\n\n  select(accessor: RadioControlValueAccessor) {\n    this._accessors.forEach((c) => {\n      if (c[0].control.root === accessor._control.control.root && c[1] !== accessor) {\n        c[1].fireUncheck();\n      }\n    });\n  }\n}\n\n/**\n * The value provided by the forms API for radio buttons.\n */\nexport class RadioButtonState {\n  constructor(public checked: boolean, public value: string) {}\n}\n\n\n/**\n * The accessor for writing a radio control value and listening to changes that is used by the\n * {@link NgModel}, {@link NgFormControl}, and {@link NgControlName} directives.\n *\n *  ### Example\n *  ```\n *  @Component({\n *    template: `\n *      <input type=\"radio\" name=\"food\" [(ngModel)]=\"foodChicken\">\n *      <input type=\"radio\" name=\"food\" [(ngModel)]=\"foodFish\">\n *    `\n *  })\n *  class FoodCmp {\n *    foodChicken = new RadioButtonState(true, \"chicken\");\n *    foodFish = new RadioButtonState(false, \"fish\");\n *  }\n *  ```\n */\n@Directive({\n  selector:\n      'input[type=radio][ngControl],input[type=radio][ngFormControl],input[type=radio][ngModel]',\n  host: {'(change)': 'onChange()', '(blur)': 'onTouched()'},\n  providers: [RADIO_VALUE_ACCESSOR]\n})\nexport class RadioControlValueAccessor implements ControlValueAccessor,\n    OnDestroy, OnInit {\n  _state: RadioButtonState;\n  _control: NgControl;\n  @Input() name: string;\n  _fn: Function;\n  onChange = () => {};\n  onTouched = () => {};\n\n  constructor(private _renderer: Renderer, private _elementRef: ElementRef,\n              private _registry: RadioControlRegistry, private _injector: Injector) {}\n\n  ngOnInit(): void {\n    this._control = this._injector.get(NgControl);\n    this._registry.add(this._control, this);\n  }\n\n  ngOnDestroy(): void { this._registry.remove(this); }\n\n  writeValue(value: any): void {\n    this._state = value;\n    if (isPresent(value) && value.checked) {\n      this._renderer.setElementProperty(this._elementRef.nativeElement, 'checked', true);\n    }\n  }\n\n  registerOnChange(fn: (_: any) => {}): void {\n    this._fn = fn;\n    this.onChange = () => {\n      fn(new RadioButtonState(true, this._state.value));\n      this._registry.select(this);\n    };\n  }\n\n  fireUncheck(): void { this._fn(new RadioButtonState(false, this._state.value)); }\n\n  registerOnTouched(fn: () => {}): void { this.onTouched = fn; }\n}\n"]}