ngrx-forms
Version:
Proper integration of forms in Angular 4 applications using ngrx
160 lines • 20.1 kB
JavaScript
import { Directive, forwardRef, Host, HostListener, Input, Optional, } from '@angular/core';
import { NGRX_FORM_VIEW_ADAPTER } from './view-adapter';
import * as i0 from "@angular/core";
// tslint:disable:directive-class-suffix
export class NgrxSelectViewAdapter {
constructor(renderer, elementRef) {
this.renderer = renderer;
this.elementRef = elementRef;
this.optionMap = {};
this.idCounter = 0;
this.selectedId = null;
this.value = undefined;
this.nativeIdWasSet = false;
this.onChangeFn = () => void 0;
this.onTouched = () => void 0;
}
set ngrxFormControlState(value) {
if (!value) {
throw new Error('The control state must not be undefined!');
}
this.state = value;
const nativeId = this.elementRef.nativeElement.id;
const shouldSetNativeId = value.id !== nativeId && this.nativeIdWasSet;
if (shouldSetNativeId) {
this.renderer.setProperty(this.elementRef.nativeElement, 'id', value.id);
}
}
ngAfterViewInit() {
const nativeId = this.elementRef.nativeElement.id;
const shouldSetNativeId = this.state.id !== nativeId && !nativeId;
if (shouldSetNativeId) {
this.renderer.setProperty(this.elementRef.nativeElement, 'id', this.state.id);
this.nativeIdWasSet = true;
}
}
setViewValue(value) {
this.value = value;
this.selectedId = this.getOptionId(value);
if (this.selectedId === null) {
this.renderer.setProperty(this.elementRef.nativeElement, 'selectedIndex', -1);
}
this.renderer.setProperty(this.elementRef.nativeElement, 'value', this.selectedId);
}
onChange({ target }) {
this.selectedId = target.value;
const value = this.optionMap[this.selectedId];
this.value = value;
this.onChangeFn(value);
}
setOnChangeCallback(fn) {
this.onChangeFn = fn;
}
setOnTouchedCallback(fn) {
this.onTouched = fn;
}
setIsDisabled(isDisabled) {
this.renderer.setProperty(this.elementRef.nativeElement, 'disabled', isDisabled);
}
createOptionId() {
const id = this.idCounter.toString();
this.idCounter += 1;
return id;
}
updateOptionValue(id, value) {
this.optionMap[id] = value;
if (this.selectedId === id) {
this.onChangeFn(value);
}
else if (value === this.value) {
this.setViewValue(value);
}
}
deregisterOption(id) {
delete this.optionMap[id];
}
getOptionId(value) {
for (const id of Array.from(Object.keys(this.optionMap))) {
if (this.optionMap[id] === value) {
return id;
}
}
return null;
}
}
NgrxSelectViewAdapter.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.2.13", ngImport: i0, type: NgrxSelectViewAdapter, deps: [{ token: i0.Renderer2 }, { token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Directive });
NgrxSelectViewAdapter.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "12.0.0", version: "12.2.13", type: NgrxSelectViewAdapter, selector: "select:not([multiple])[ngrxFormControlState]", inputs: { ngrxFormControlState: "ngrxFormControlState" }, host: { listeners: { "blur": "onTouched()", "change": "onChange($event)" } }, providers: [{
provide: NGRX_FORM_VIEW_ADAPTER,
useExisting: forwardRef(() => NgrxSelectViewAdapter),
multi: true,
}], ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.2.13", ngImport: i0, type: NgrxSelectViewAdapter, decorators: [{
type: Directive,
args: [{
// tslint:disable-next-line:directive-selector
selector: 'select:not([multiple])[ngrxFormControlState]',
providers: [{
provide: NGRX_FORM_VIEW_ADAPTER,
useExisting: forwardRef(() => NgrxSelectViewAdapter),
multi: true,
}],
}]
}], ctorParameters: function () { return [{ type: i0.Renderer2 }, { type: i0.ElementRef }]; }, propDecorators: { onTouched: [{
type: HostListener,
args: ['blur']
}], ngrxFormControlState: [{
type: Input
}], onChange: [{
type: HostListener,
args: ['change', ['$event']]
}] } });
const NULL_VIEW_ADAPTER = {
createOptionId: () => '',
deregisterOption: () => void 0,
updateOptionValue: () => void 0,
};
const NULL_RENDERER = {
setProperty: () => void 0,
};
export class NgrxSelectOption {
constructor(element, renderer, viewAdapter) {
this.element = element;
this.renderer = renderer;
this.viewAdapter = viewAdapter;
this.isInitialized = false;
this.renderer = viewAdapter ? renderer : NULL_RENDERER;
this.viewAdapter = viewAdapter || NULL_VIEW_ADAPTER;
this.id = this.viewAdapter.createOptionId();
}
set value(value) {
// this cannot be done inside ngOnInit since the value property
// must be already set when the option value is updated in the view
// adapter and the initial binding of 'value' happens before
// ngOnInit runs
if (!this.isInitialized) {
this.isInitialized = true;
this.renderer.setProperty(this.element.nativeElement, 'value', this.id);
}
this.viewAdapter.updateOptionValue(this.id, value);
}
ngOnDestroy() {
this.viewAdapter.deregisterOption(this.id);
}
}
NgrxSelectOption.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.2.13", ngImport: i0, type: NgrxSelectOption, deps: [{ token: i0.ElementRef }, { token: i0.Renderer2 }, { token: NgrxSelectViewAdapter, host: true, optional: true }], target: i0.ɵɵFactoryTarget.Directive });
NgrxSelectOption.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "12.0.0", version: "12.2.13", type: NgrxSelectOption, selector: "option", inputs: { value: "value" }, ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.2.13", ngImport: i0, type: NgrxSelectOption, decorators: [{
type: Directive,
args: [{
// tslint:disable-next-line:directive-selector
selector: 'option',
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.Renderer2 }, { type: NgrxSelectViewAdapter, decorators: [{
type: Host
}, {
type: Optional
}] }]; }, propDecorators: { value: [{
type: Input,
args: ['value']
}] } });
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{\r\n  AfterViewInit,\r\n  Directive,\r\n  ElementRef,\r\n  forwardRef,\r\n  Host,\r\n  HostListener,\r\n  Input,\r\n  OnDestroy,\r\n  Optional,\r\n  Renderer2,\r\n} from '@angular/core';\r\n\r\nimport { FormControlState } from '../state';\r\nimport { FormViewAdapter, NGRX_FORM_VIEW_ADAPTER } from './view-adapter';\r\n\r\n// tslint:disable:directive-class-suffix\r\n\r\n@Directive({\r\n  // tslint:disable-next-line:directive-selector\r\n  selector: 'select:not([multiple])[ngrxFormControlState]',\r\n  providers: [{\r\n    provide: NGRX_FORM_VIEW_ADAPTER,\r\n    useExisting: forwardRef(() => NgrxSelectViewAdapter),\r\n    multi: true,\r\n  }],\r\n})\r\nexport class NgrxSelectViewAdapter implements FormViewAdapter, AfterViewInit {\r\n  private state: FormControlState<any>;\r\n  private optionMap: { [id: string]: any } = {};\r\n  private idCounter = 0;\r\n  private selectedId: string | null = null;\r\n  private value: any = undefined;\r\n  private nativeIdWasSet = false;\r\n\r\n  onChangeFn: (value: any) => void = () => void 0;\r\n\r\n  @HostListener('blur')\r\n  onTouched: () => void = () => void 0\r\n\r\n  @Input() set ngrxFormControlState(value: FormControlState<any>) {\r\n    if (!value) {\r\n      throw new Error('The control state must not be undefined!');\r\n    }\r\n\r\n    this.state = value;\r\n    const nativeId = this.elementRef.nativeElement.id;\r\n    const shouldSetNativeId = value.id !== nativeId && this.nativeIdWasSet;\r\n    if (shouldSetNativeId) {\r\n      this.renderer.setProperty(this.elementRef.nativeElement, 'id', value.id);\r\n    }\r\n  }\r\n\r\n  constructor(private renderer: Renderer2, private elementRef: ElementRef) { }\r\n\r\n  ngAfterViewInit() {\r\n    const nativeId = this.elementRef.nativeElement.id;\r\n    const shouldSetNativeId = this.state.id !== nativeId && !nativeId;\r\n    if (shouldSetNativeId) {\r\n      this.renderer.setProperty(this.elementRef.nativeElement, 'id', this.state.id);\r\n      this.nativeIdWasSet = true;\r\n    }\r\n  }\r\n\r\n  setViewValue(value: any) {\r\n    this.value = value;\r\n    this.selectedId = this.getOptionId(value);\r\n    if (this.selectedId === null) {\r\n      this.renderer.setProperty(this.elementRef.nativeElement, 'selectedIndex', -1);\r\n    }\r\n\r\n    this.renderer.setProperty(this.elementRef.nativeElement, 'value', this.selectedId);\r\n  }\r\n\r\n  @HostListener('change', ['$event'])\r\n  onChange({ target }: { target: HTMLOptionElement }) {\r\n    this.selectedId = target.value;\r\n    const value = this.optionMap[this.selectedId];\r\n    this.value = value;\r\n    this.onChangeFn(value);\r\n  }\r\n\r\n  setOnChangeCallback(fn: (value: any) => void) {\r\n    this.onChangeFn = fn;\r\n  }\r\n\r\n  setOnTouchedCallback(fn: () => void) {\r\n    this.onTouched = fn;\r\n  }\r\n\r\n  setIsDisabled(isDisabled: boolean) {\r\n    this.renderer.setProperty(this.elementRef.nativeElement, 'disabled', isDisabled);\r\n  }\r\n\r\n  createOptionId() {\r\n    const id = this.idCounter.toString();\r\n    this.idCounter += 1;\r\n    return id;\r\n  }\r\n\r\n  updateOptionValue(id: string, value: any) {\r\n    this.optionMap[id] = value;\r\n\r\n    if (this.selectedId === id) {\r\n      this.onChangeFn(value);\r\n    } else if (value === this.value) {\r\n      this.setViewValue(value);\r\n    }\r\n  }\r\n\r\n  deregisterOption(id: string) {\r\n    delete this.optionMap[id];\r\n  }\r\n\r\n  private getOptionId(value: any) {\r\n    for (const id of Array.from(Object.keys(this.optionMap))) {\r\n      if (this.optionMap[id] === value) {\r\n        return id;\r\n      }\r\n    }\r\n\r\n    return null;\r\n  }\r\n}\r\n\r\nconst NULL_VIEW_ADAPTER: NgrxSelectViewAdapter = {\r\n  createOptionId: () => '',\r\n  deregisterOption: () => void 0,\r\n  updateOptionValue: () => void 0,\r\n} as any;\r\n\r\nconst NULL_RENDERER: Renderer2 = {\r\n  setProperty: () => void 0,\r\n} as any;\r\n\r\n@Directive({\r\n  // tslint:disable-next-line:directive-selector\r\n  selector: 'option',\r\n})\r\nexport class NgrxSelectOption implements OnDestroy {\r\n  private isInitialized = false;\r\n  id: string;\r\n\r\n  constructor(\r\n    private element: ElementRef,\r\n    private renderer: Renderer2,\r\n    @Host() @Optional() private viewAdapter: NgrxSelectViewAdapter,\r\n  ) {\r\n    this.renderer = viewAdapter ? renderer : NULL_RENDERER;\r\n    this.viewAdapter = viewAdapter || NULL_VIEW_ADAPTER;\r\n    this.id = this.viewAdapter.createOptionId();\r\n  }\r\n\r\n  @Input('value')\r\n  set value(value: any) {\r\n    // this cannot be done inside ngOnInit since the value property\r\n    // must be already set when the option value is updated in the view\r\n    // adapter and the initial binding of 'value' happens before\r\n    // ngOnInit runs\r\n    if (!this.isInitialized) {\r\n      this.isInitialized = true;\r\n      this.renderer.setProperty(this.element.nativeElement, 'value', this.id);\r\n    }\r\n\r\n    this.viewAdapter.updateOptionValue(this.id, value);\r\n  }\r\n\r\n  ngOnDestroy(): void {\r\n    this.viewAdapter.deregisterOption(this.id);\r\n  }\r\n}\r\n"]}