From 15c968cfd6617f43fa80ac146e34f66f87320704 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=A1=E8=89=B2?= <cipchk@qq.com>
Date: Sat, 30 Dec 2017 13:56:23 +0800
Subject: [PATCH] feat(module:radio): use nz-radio components alone (#825)

---
 src/components/radio/nz-radio.component.ts    | 58 ++++++++++++++++---
 .../nz-demo-radio-group-disabled.component.ts |  6 ++
 .../nz-demo-radio-group.component.ts          |  6 ++
 3 files changed, 62 insertions(+), 8 deletions(-)

diff --git a/src/components/radio/nz-radio.component.ts b/src/components/radio/nz-radio.component.ts
index 402efeb1983..7f07d24749f 100644
--- a/src/components/radio/nz-radio.component.ts
+++ b/src/components/radio/nz-radio.component.ts
@@ -1,13 +1,16 @@
 import {
+  forwardRef,
   Component,
   ElementRef,
   HostBinding,
   HostListener,
   Input,
   OnInit,
+  Optional,
   Renderer2,
-  ViewEncapsulation,
+  ViewEncapsulation
 } from '@angular/core';
+import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';
 
 import { toBoolean } from '../util/convert';
 import { NzRadioGroupComponent } from './nz-radio-group.component';
@@ -24,9 +27,16 @@ import { NzRadioGroupComponent } from './nz-radio-group.component';
   `,
   styleUrls    : [
     './style/index.less'
+  ],
+  providers    : [
+    {
+      provide    : NG_VALUE_ACCESSOR,
+      useExisting: forwardRef(() => NzRadioComponent),
+      multi      : true
+    }
   ]
 })
-export class NzRadioComponent implements OnInit {
+export class NzRadioComponent implements OnInit, ControlValueAccessor {
   private _checked = false;
   private _disabled = false;
   private _focused = false;
@@ -36,6 +46,9 @@ export class NzRadioComponent implements OnInit {
   _prefixCls = 'ant-radio';
   _innerPrefixCls = `${this._prefixCls}-inner`;
   _inputPrefixCls = `${this._prefixCls}-input`;
+  // ngModel Access
+  onChange: (_: boolean) => void = () => null;
+  onTouched: () => void = () => null;
 
   @Input()
   @HostBinding('class.ant-radio-wrapper-checked')
@@ -75,9 +88,13 @@ export class NzRadioComponent implements OnInit {
   onClick(e: MouseEvent): void {
     e.preventDefault();
     if (!this._disabled) {
-      this._checked = true;
-      this.setClassMap();
-      this._nzRadioGroup.selectRadio(this);
+      if (this._nzRadioGroup) {
+        this._checked = true;
+        this.setClassMap();
+        this._nzRadioGroup.selectRadio(this);
+      } else {
+        this.updateValue(!this._checked);
+      }
     }
   }
 
@@ -89,7 +106,7 @@ export class NzRadioComponent implements OnInit {
   nzBlur(): void {
     this._focused = false;
     this.setClassMap();
-    this._nzRadioGroup.onTouched();
+    if (this._nzRadioGroup) this._nzRadioGroup.onTouched();
   }
 
   setClassMap(): void {
@@ -101,13 +118,38 @@ export class NzRadioComponent implements OnInit {
     };
   }
 
-  constructor(private _elementRef: ElementRef, public _renderer: Renderer2, public _nzRadioGroup: NzRadioGroupComponent) {
+  constructor(private _elementRef: ElementRef, public _renderer: Renderer2, @Optional() public _nzRadioGroup: NzRadioGroupComponent) {
     this._el = this._elementRef.nativeElement;
   }
 
   ngOnInit(): void {
-    this._nzRadioGroup.addRadio(this);
+    if (this._nzRadioGroup) this._nzRadioGroup.addRadio(this);
     this._renderer.addClass(this._el, `${this._prefixCls}-wrapper`);
     this.setClassMap();
   }
+
+  // region: value accessor
+  updateValue(value: boolean): void {
+    if (value === this._checked) {
+      return;
+    }
+    this.onChange(value);
+    this._focused = false;
+    this._checked = value;
+    this.setClassMap();
+  }
+
+  writeValue(value: boolean): void {
+      this._checked = value;
+      this.setClassMap();
+  }
+
+  registerOnChange(fn: (_: boolean) => {}): void {
+      this.onChange = fn;
+  }
+
+  registerOnTouched(fn: () => {}): void {
+      this.onTouched = fn;
+  }
+  // endregion
 }
diff --git a/src/showcase/nz-demo-radio/nz-demo-radio-group-disabled.component.ts b/src/showcase/nz-demo-radio/nz-demo-radio-group-disabled.component.ts
index 91868837e4c..255551f6234 100644
--- a/src/showcase/nz-demo-radio/nz-demo-radio-group-disabled.component.ts
+++ b/src/showcase/nz-demo-radio/nz-demo-radio-group-disabled.component.ts
@@ -3,6 +3,11 @@ import { Component, OnInit } from '@angular/core';
 @Component({
   selector: 'nz-demo-radio-group-disabled',
   template: `
+    <div>
+      <label nz-radio [(ngModel)]="singleValue" [nzDisabled]="isDisabled">
+        <span>独立使用 {{ singleValue }}</span>
+      </label>
+    </div>
     <nz-radio-group [(ngModel)]="radioValue">
       <label nz-radio [nzValue]="'A'">
         <span>A</span>
@@ -25,6 +30,7 @@ import { Component, OnInit } from '@angular/core';
 })
 export class NzDemoRadioGroupDisabledComponent {
   radioValue = 'A';
+  singleValue = false;
   isDisabled = true;
   toggleDisabled = () => {
     this.isDisabled = !this.isDisabled;
diff --git a/src/showcase/nz-demo-radio/nz-demo-radio-group.component.ts b/src/showcase/nz-demo-radio/nz-demo-radio-group.component.ts
index 1c4cae23c83..b39fc718d44 100644
--- a/src/showcase/nz-demo-radio/nz-demo-radio-group.component.ts
+++ b/src/showcase/nz-demo-radio/nz-demo-radio-group.component.ts
@@ -3,6 +3,11 @@ import { Component, OnInit } from '@angular/core';
 @Component({
   selector: 'nz-demo-radio-group',
   template: `
+    <div>
+      <label nz-radio [(ngModel)]="singleValue">
+        <span>独立使用 {{ singleValue }}</span>
+      </label>
+    </div>
     <nz-radio-group [(ngModel)]="radioValue">
       <label nz-radio [nzValue]="'A'">
         <span>A</span>
@@ -21,4 +26,5 @@ import { Component, OnInit } from '@angular/core';
 })
 export class NzDemoRadioGroupComponent {
   radioValue = 'A';
+  singleValue = true;
 }