fix(accordion): accordions expand when using binding

angular/test/test-app/e2e/src/accordion.spec.ts

@@ -0,0 +1,19 @@
+describe('Accordion', () => {
+  beforeEach(() => {
+    cy.visit('/accordions');
+  });
+
+  it('should correctly expand on multiple modal opens', () => {
+    cy.get('#open-modal').click();
+
+    cy.get('ion-accordion:first-of-type').should('have.class', 'accordion-expanded');
+    cy.get('ion-accordion:last-of-type').should('not.have.class', 'accordion-expanded');
+
+    cy.get('#dismiss').click();
+
+    cy.get('#open-modal').click();
+
+    cy.get('ion-accordion:first-of-type').should('have.class', 'accordion-expanded');
+    cy.get('ion-accordion:last-of-type').should('not.have.class', 'accordion-expanded');
+  });
+});

angular/test/test-app/src/app/accordion/accordion-modal/accordion-modal.component.html

@@ -0,0 +1,17 @@
+<ion-content>
+  <ion-button id="dismiss" (click)="modal.dismiss()">Dismiss Modal</ion-button>
+  <ion-accordion-group [value]="'a'">
+    <ion-accordion value="a">
+      <ion-item slot="header">
+        <ion-label>A</ion-label>
+      </ion-item>
+      <div slot="content">A content</div>
+    </ion-accordion>
+    <ion-accordion value="b">
+      <ion-item slot="header">
+        <ion-label>B</ion-label>
+      </ion-item>
+      <div slot="content">B content</div>
+    </ion-accordion>
+  </ion-accordion-group>
+</ion-content>

angular/test/test-app/src/app/accordion/accordion-modal/accordion-modal.component.ts

@@ -0,0 +1,11 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-accordion-modal',
+  templateUrl: './accordion-modal.component.html',
+})
+export class AccordionModalComponent {
+  modal: HTMLIonModalElement;
+
+  constructor() {}
+}

angular/test/test-app/src/app/accordion/accordion.component.html

@@ -0,0 +1,13 @@
+<ion-header>
+  <ion-toolbar>
+    <ion-buttons>
+      <ion-back-button></ion-back-button>
+    </ion-buttons>
+    <ion-title>
+      Accordion test
+    </ion-title>
+  </ion-toolbar>
+</ion-header>
+<ion-content>
+  <ion-button id="open-modal" (click)="open()">Open Modal</ion-button>
+</ion-content>

angular/test/test-app/src/app/accordion/accordion.component.ts

@@ -0,0 +1,22 @@
+import { Component } from '@angular/core';
+import { ModalController } from '@ionic/angular';
+import { AccordionModalComponent } from './accordion-modal/accordion-modal.component';
+
+@Component({
+  selector: 'app-accordion',
+  templateUrl: './accordion.component.html',
+})
+export class AccordionComponent {
+
+  constructor(
+    private modalCtrl: ModalController
+  ) { }
+
+  async open() {
+    const modal = await this.modalCtrl.create({
+      component: AccordionModalComponent,
+      animated: false,
+    });
+    await modal.present();
+  }
+}

angular/test/test-app/src/app/app-routing.module.ts

@@ -20,9 +20,11 @@ import { NavigationPage1Component } from './navigation-page1/navigation-page1.co
 import { NavigationPage2Component } from './navigation-page2/navigation-page2.component';
 import { NavigationPage3Component } from './navigation-page3/navigation-page3.component';
 import { AlertComponent } from './alert/alert.component';
+import { AccordionComponent } from './accordion/accordion.component';
 
 const routes: Routes = [
   { path: '', component: HomePageComponent },
+  { path: 'accordions', component: AccordionComponent },
   { path: 'alerts', component: AlertComponent },
   { path: 'inputs', component: InputsComponent },
   { path: 'form', component: FormComponent },

angular/test/test-app/src/app/app.module.ts

@@ -30,6 +30,8 @@ import { NavigationPage1Component } from './navigation-page1/navigation-page1.co
 import { NavigationPage2Component } from './navigation-page2/navigation-page2.component';
 import { NavigationPage3Component } from './navigation-page3/navigation-page3.component';
 import { AlertComponent } from './alert/alert.component';
+import { AccordionComponent } from './accordion/accordion.component';
+import { AccordionModalComponent } from './accordion/accordion-modal/accordion-modal.component';
 
 @NgModule({
   declarations: [
@@ -56,7 +58,9 @@ import { AlertComponent } from './alert/alert.component';
     NavigationPage1Component,
     NavigationPage2Component,
     NavigationPage3Component,
-    AlertComponent
+    AlertComponent,
+    AccordionComponent,
+    AccordionModalComponent
   ],
   imports: [
     BrowserModule.withServerTransition({ appId: 'serverApp' }),

angular/test/test-app/src/app/home-page/home-page.component.html

@@ -62,5 +62,10 @@
           Providers
         </ion-label>
       </ion-item>
+      <ion-item routerLink="/accordions">
+        <ion-label>
+          Accordions Test
+        </ion-label>
+      </ion-item>
     </ion-list>
   </ion-content>

core/src/components/accordion/accordion.tsx

@@ -211,7 +211,8 @@ export class Accordion implements ComponentInterface {
   };
 
   private expandAccordion = (initialUpdate = false) => {
-    if (initialUpdate) {
+    const { contentEl, contentElWrapper } = this;
+    if (initialUpdate || contentEl === undefined || contentElWrapper === undefined) {
       this.state = AccordionState.Expanded;
       return;
     }
@@ -220,11 +221,6 @@ export class Accordion implements ComponentInterface {
       return;
     }
 
-    const { contentEl, contentElWrapper } = this;
-    if (contentEl === undefined || contentElWrapper === undefined) {
-      return;
-    }
-
     if (this.currentRaf !== undefined) {
       cancelAnimationFrame(this.currentRaf);
     }
@@ -250,7 +246,8 @@ export class Accordion implements ComponentInterface {
   };
 
   private collapseAccordion = (initialUpdate = false) => {
-    if (initialUpdate) {
+    const { contentEl } = this;
+    if (initialUpdate || contentEl === undefined) {
       this.state = AccordionState.Collapsed;
       return;
     }
@@ -259,11 +256,6 @@ export class Accordion implements ComponentInterface {
       return;
     }
 
-    const { contentEl } = this;
-    if (contentEl === undefined) {
-      return;
-    }
-
     if (this.currentRaf !== undefined) {
       cancelAnimationFrame(this.currentRaf);
     }