INT-2974: Support OnPush change detection (#368)

* INT-2974: Now uses OnPush change detection

* INT-2974: Added a story to show support for OnPush change detection form/parent element

* INT-2974: Added changelog entry

* INT-2974: Update CHANGELOG.md

Co-authored-by: Andrew Herron <thespyder@programmer.net>

---------

Co-authored-by: Andrew Herron <thespyder@programmer.net>

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Usage of RxJS deprecated operators. #INT-3274
 ### Added
 - Support for Angular 15, 16 & 17. #INT-3274
+- Support for the OnPush change detection strategy. #INT-2974
 ### Improved
 - Updated Storybook to v8, as well as now using CSFv3 components. #INT-3274
 

stories/Editor.stories.ts

@@ -5,6 +5,7 @@ import { FormsModule, ReactiveFormsModule } from '@angular/forms';
 import { EventBindingComponent } from './event-binding/EventBinding.component';
 import { EventForwardingComponent } from './event-forwarding/EventForwarding.component';
 import { FormControlComponent } from './form-control/FormControl.component';
+import { FormWithOnPushComponent } from './form-with-on-push/form-with-on-push.component';
 import { BlogComponent } from './formvalidation/FormValidation.component';
 import { DisablingComponent } from './disable/Disable.component';
 import { ViewQueryComponent } from './viewquery/Viewquery.component';
@@ -97,6 +98,17 @@ export const FormControlStory: StoryObj<EditorComponent> = {
   }
 };
 
+export const FormStateStory: StoryObj<EditorComponent> = {
+  name: 'Form with on-push change detection',
+  render: () => ({
+    moduleMetadata: {
+      imports: [ ReactiveFormsModule, FormsModule ],
+      declarations: [ FormWithOnPushComponent ],
+    },
+    template: `<form-with-on-push apiKey="${apiKey}"/>`
+  }),
+};
+
 export const FormValidationStory: StoryObj<EditorComponent> = {
   name: 'Form Validation',
   render: () => ({

stories/form-with-on-push/form-with-on-push.component.ts

@@ -0,0 +1,31 @@
+/* eslint-disable @typescript-eslint/unbound-method */
+/* eslint-disable @typescript-eslint/no-parameter-properties */
+import {
+  Component,
+  ChangeDetectionStrategy,
+  Input,
+} from '@angular/core';
+import { FormControl, FormGroup, Validators } from '@angular/forms';
+import type { EditorComponent } from '../../tinymce-angular-component/src/main/ts/public_api';
+
+@Component({
+  selector: 'form-with-on-push',
+  templateUrl: './form-with-on-push.html',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class FormWithOnPushComponent {
+  @Input() public apiKey = '';
+  public readonly initialValue = '';
+  public readonly init: EditorComponent['init'] = {
+    plugins: [ 'help' ],
+  };
+  public readonly form = new FormGroup({
+    tiny: new FormControl('', {
+      validators: Validators.compose([
+        Validators.required,
+        Validators.minLength(10)
+      ]),
+    }),
+    regular: new FormControl(''),
+  });
+}

stories/form-with-on-push/form-with-on-push.html

@@ -0,0 +1,24 @@
+<form [formGroup]="form" style="display: flex; gap: 0.2em; flex-direction: column;">
+  <editor
+    formControlName="tiny"
+    plugins="table"
+    init="{ width: '200px', }"
+  />
+  <br />
+  <label>
+    <span>Regular input</span>
+    <br />
+    <input type="text" formControlName="regular" />
+  </label>
+  <br />
+  <button type="reset" style="width: 200px">Reset form</button>
+  <button [disabled]="form.invalid" type="submit" style="width: 200px">Submit form</button>
+</form>
+<br />
+<pre>
+Pristine: {{ form.pristine }}
+Touched: {{ form.touched }}
+Dirty: {{ form.dirty }}
+Valid: {{ form.valid }}
+Data: {{ form.value | json }}
+</pre>

tinymce-angular-component/src/main/ts/editor/editor.component.ts

@@ -1,6 +1,20 @@
 /* eslint-disable @typescript-eslint/no-parameter-properties */
 import { isPlatformBrowser, CommonModule } from '@angular/common';
-import { AfterViewInit, Component, ElementRef, forwardRef, Inject, Input, NgZone, OnDestroy, PLATFORM_ID, InjectionToken, Optional } from '@angular/core';
+import {
+  AfterViewInit,
+  Component,
+  ElementRef,
+  forwardRef,
+  Inject,
+  Input,
+  NgZone,
+  OnDestroy,
+  PLATFORM_ID,
+  InjectionToken,
+  Optional,
+  ChangeDetectorRef,
+  ChangeDetectionStrategy
+} from '@angular/core';
 import { FormsModule, ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';
 import { Subject, takeUntil } from 'rxjs';
 import { getTinymce } from '../TinyMCE';
@@ -25,7 +39,8 @@ const EDITOR_COMPONENT_VALUE_ACCESSOR = {
   styles: [ ':host { display: block; }' ],
   providers: [ EDITOR_COMPONENT_VALUE_ACCESSOR ],
   standalone: true,
-  imports: [ CommonModule, FormsModule ]
+  imports: [ CommonModule, FormsModule ],
+  changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class EditorComponent extends Events implements AfterViewInit, ControlValueAccessor, OnDestroy {
 
@@ -77,6 +92,7 @@ export class EditorComponent extends Events implements AfterViewInit, ControlVal
   public constructor(
     elementRef: ElementRef,
     ngZone: NgZone,
+    private cdRef: ChangeDetectorRef,
     @Inject(PLATFORM_ID) private platformId: Object,
     @Optional() @Inject(TINYMCE_SCRIPT_SRC) private tinymceScriptSrc?: string
   ) {
@@ -187,10 +203,12 @@ export class EditorComponent extends Events implements AfterViewInit, ControlVal
 
   private initEditor(editor: TinyMCEEditor) {
     listenTinyMCEEvent(editor, 'blur', this.destroy$).subscribe(() => {
+      this.cdRef.markForCheck();
       this.ngZone.run(() => this.onTouchedCallback());
     });
 
     listenTinyMCEEvent(editor, this.modelEvents, this.destroy$).subscribe(() => {
+      this.cdRef.markForCheck();
       this.ngZone.run(() => this.emitOnChange(editor));
     });