feat(angular, react, vue): add support for autoMountComponent

angular/src/directives/overlays/modal.ts

@@ -54,6 +54,7 @@ export declare interface IonModal extends Components.IonModal {
 @ProxyCmp({
   inputs: [
     'animated',
+    'keepContentsMounted',
     'backdropBreakpoint',
     'backdropDismiss',
     'breakpoints',
@@ -78,9 +79,12 @@ export declare interface IonModal extends Components.IonModal {
 @Component({
   selector: 'ion-modal',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  template: `<div class="ion-page" *ngIf="isCmpOpen"><ng-container [ngTemplateOutlet]="template"></ng-container></div>`,
+  template: `<div class="ion-page" *ngIf="isCmpOpen || keepContentsMounted">
+    <ng-container [ngTemplateOutlet]="template"></ng-container>
+  </div>`,
   inputs: [
     'animated',
+    'keepContentsMounted',
     'backdropBreakpoint',
     'backdropDismiss',
     'breakpoints',

angular/src/directives/overlays/popover.ts

@@ -51,6 +51,7 @@ export declare interface IonPopover extends Components.IonPopover {
     'alignment',
     'animated',
     'arrow',
+    'keepContentsMounted',
     'backdropDismiss',
     'cssClass',
     'dismissOnSelect',
@@ -73,11 +74,12 @@ export declare interface IonPopover extends Components.IonPopover {
 @Component({
   selector: 'ion-popover',
   changeDetection: ChangeDetectionStrategy.OnPush,
-  template: `<ng-container [ngTemplateOutlet]="template" *ngIf="isCmpOpen"></ng-container>`,
+  template: `<ng-container [ngTemplateOutlet]="template" *ngIf="isCmpOpen || keepContentsMounted"></ng-container>`,
   inputs: [
     'alignment',
     'animated',
     'arrow',
+    'keepContentsMounted',
     'backdropDismiss',
     'cssClass',
     'dismissOnSelect',

angular/test/test-app/e2e/src/keep-contents-mounted.spec.ts

@@ -0,0 +1,60 @@
+describe('overlays - keepContentsMounted', () => {
+  describe('modal', () => {
+    it('should not mount component if false', () => {
+      cy.visit('/modal-inline');
+
+      cy.get('ion-modal ion-content').should('not.exist');
+    });
+
+    it('should mount component if true', () => {
+      cy.visit('/keep-contents-mounted');
+
+      cy.get('ion-modal ion-content').should('exist');
+    });
+
+    it('should keep component mounted after dismissing if true', () => {
+      cy.visit('/keep-contents-mounted');
+
+      cy.get('#open-modal').click();
+
+      cy.get('ion-modal ion-content').should('exist');
+
+      cy.get('ion-modal ion-button').click();
+
+      cy.get('ion-modal')
+        .should('not.be.visible')
+        .should('have.class', 'overlay-hidden');
+
+      cy.get('ion-modal ion-content').should('exist');
+    });
+  })
+  describe('popover', () => {
+    it('should not mount component if false', () => {
+      cy.visit('/popover-inline');
+
+      cy.get('ion-popover ion-content').should('not.exist');
+    });
+
+    it('should mount component if true', () => {
+      cy.visit('/keep-contents-mounted');
+
+      cy.get('ion-popover ion-content').should('exist');
+    });
+
+    it('should keep component mounted after dismissing if true', () => {
+      cy.visit('/keep-contents-mounted');
+
+      cy.get('#open-popover').click();
+
+      cy.get('ion-popover ion-content').should('exist');
+
+      cy.get('ion-popover ion-button').click();
+
+      cy.get('ion-popover')
+        .should('not.be.visible')
+        .should('have.class', 'overlay-hidden');
+
+      cy.get('ion-popover ion-content').should('exist');
+    });
+  });
+});

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

@@ -4,10 +4,17 @@ describe('Popovers: Inline', () => {
   });
 
   it('should initially have no items', () => {
+    cy.get('ion-button').click();
+
+    cy.get('ion-popover').should('be.visible');
     cy.get('ion-list ion-item').should('not.exist');
   });
 
   it('should have items after 1500ms', () => {
+    cy.get('ion-button').click();
+
+    cy.get('ion-popover').should('be.visible');
+
     cy.wait(1500);
 
     cy.get('ion-list ion-item:nth-child(1)').should('have.text', 'A');

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

@@ -31,6 +31,7 @@ const routes: Routes = [
   { path: 'modals', component: ModalComponent },
   { path: 'modal-inline', loadChildren: () => import('./modal-inline').then(m => m.ModalInlineModule) },
   { path: 'view-child', component: ViewChildComponent },
+  { path: 'keep-contents-mounted', loadChildren: () => import('./keep-contents-mounted').then(m => m.OverlayAutoMountModule) },
   { path: 'popover-inline', loadChildren: () => import('./popover-inline').then(m => m.PopoverInlineModule) },
   { path: 'providers', component: ProvidersComponent },
   { path: 'router-link', component: RouterLinkComponent },

angular/test/test-app/src/app/keep-contents-mounted/index.ts

@@ -0,0 +1,2 @@
+export * from './keep-contents-mounted.component';
+export * from './keep-contents-mounted.module';

angular/test/test-app/src/app/keep-contents-mounted/keep-contents-mounted-routing.module.ts

@@ -0,0 +1,16 @@
+import { NgModule } from "@angular/core";
+import { RouterModule } from "@angular/router";
+import { OverlayKeepContentsMounted } from ".";
+
+@NgModule({
+  imports: [
+    RouterModule.forChild([
+      {
+        path: '',
+        component: OverlayKeepContentsMounted
+      }
+    ])
+  ],
+  exports: [RouterModule]
+})
+export class OverlayKeepContentsMountedRoutingModule { }

angular/test/test-app/src/app/keep-contents-mounted/keep-contents-mounted.component.html

@@ -0,0 +1,22 @@
+<ion-content>
+  <ion-button id="open-modal" (click)="modal.present()">Open Modal</ion-button>
+  <ion-button id="open-popover" (click)="popover.present()">Open Popover</ion-button>
+
+  <ion-modal [keepContentsMounted]="true" #modal>
+    <ng-template>
+      <ion-content>
+        <ion-button (click)="modal.dismiss()">Dismiss</ion-button>
+        Modal Content
+      </ion-content>
+    </ng-template>
+  </ion-modal>
+
+  <ion-popover [keepContentsMounted]="true" #popover>
+    <ng-template>
+      <ion-content>
+        <ion-button (click)="popover.dismiss()">Dismiss</ion-button>
+        Popover Content
+      </ion-content>
+    </ng-template>
+  </ion-popover>
+</ion-content>

angular/test/test-app/src/app/keep-contents-mounted/keep-contents-mounted.component.ts

@@ -0,0 +1,13 @@
+import { Component } from "@angular/core";
+
+/**
+ * Validates that inline modals correctly mount
+ * inner components when keepContentsMounted is
+ * enabled.
+ */
+@Component({
+  selector: 'app-keep-contents-mounted',
+  templateUrl: 'keep-contents-mounted.component.html'
+})
+export class OverlayKeepContentsMounted {
+}

angular/test/test-app/src/app/keep-contents-mounted/keep-contents-mounted.module.ts

@@ -0,0 +1,12 @@
+import { CommonModule } from "@angular/common";
+import { NgModule } from "@angular/core";
+import { IonicModule } from "@ionic/angular";
+import { OverlayKeepContentsMountedRoutingModule } from "./keep-contents-mounted-routing.module";
+import { OverlayKeepContentsMounted } from "./keep-contents-mounted.component";
+
+@NgModule({
+  imports: [CommonModule, IonicModule, OverlayKeepContentsMountedRoutingModule],
+  declarations: [OverlayKeepContentsMounted],
+  exports: [OverlayKeepContentsMounted]
+})
+export class OverlayAutoMountModule { }

angular/test/test-app/src/app/popover-inline/popover-inline.component.html

@@ -1,4 +1,6 @@
-<ion-popover [isOpen]="true">
+<ion-button (click)="openPopover(popover)">Open Popover</ion-button>
+
+<ion-popover #popover>
   <ng-template>
     <ion-content>
       <ion-list>

angular/test/test-app/src/app/popover-inline/popover-inline.component.ts

@@ -1,4 +1,4 @@
-import { AfterViewInit, Component } from "@angular/core";
+import { Component } from "@angular/core";
 
 /**
  * Validates that inline popovers will correctly display
@@ -9,11 +9,13 @@ import { AfterViewInit, Component } from "@angular/core";
   selector: 'app-popover-inline',
   templateUrl: 'popover-inline.component.html'
 })
-export class PopoverInlineComponent implements AfterViewInit {
+export class PopoverInlineComponent {
 
   items: string[] = [];
 
-  ngAfterViewInit(): void {
+  openPopover(popover: HTMLIonPopoverElement) {
+    popover.present();
+
     setTimeout(() => {
       this.items = ['A', 'B', 'C', 'D'];
     }, 1000);

core/api.txt

@@ -776,6 +776,7 @@ ion-modal,prop,handle,boolean | undefined,undefined,false,false
 ion-modal,prop,htmlAttributes,undefined | { [key: string]: any; },undefined,false,false
 ion-modal,prop,initialBreakpoint,number | undefined,undefined,false,false
 ion-modal,prop,isOpen,boolean,false,false,false
+ion-modal,prop,keepContentsMounted,boolean,false,false,false
 ion-modal,prop,keyboardClose,boolean,true,false,false
 ion-modal,prop,leaveAnimation,((baseEl: any, opts?: any) => Animation) | undefined,undefined,false,false
 ion-modal,prop,mode,"ios" | "md",undefined,false,false
@@ -895,6 +896,7 @@ ion-popover,prop,enterAnimation,((baseEl: any, opts?: any) => Animation) | undef
 ion-popover,prop,event,any,undefined,false,false
 ion-popover,prop,htmlAttributes,undefined | { [key: string]: any; },undefined,false,false
 ion-popover,prop,isOpen,boolean,false,false,false
+ion-popover,prop,keepContentsMounted,boolean,false,false,false
 ion-popover,prop,keyboardClose,boolean,true,false,false
 ion-popover,prop,leaveAnimation,((baseEl: any, opts?: any) => Animation) | undefined,undefined,false,false
 ion-popover,prop,mode,"ios" | "md",undefined,false,false

core/src/components.d.ts

@@ -1571,6 +1571,10 @@ export namespace Components {
           * If `true`, the modal will open. If `false`, the modal will close. Use this if you need finer grained control over presentation, otherwise just use the modalController or the `trigger` property. Note: `isOpen` will not automatically be set back to `false` when the modal dismisses. You will need to do that in your code.
          */
         "isOpen": boolean;
+        /**
+          * If `true`, the component passed into `ion-modal` will automatically be mounted when the modal is created. The component will remain mounted even when the modal is dismissed. However, the component will be destroyed when the modal is destroyed. This property is not reactive and should only be used when initially creating a modal.  Note: This feature only applies to inline modals in JavaScript frameworks such as Angular, React, and Vue.
+         */
+        "keepContentsMounted": boolean;
         /**
           * If `true`, the keyboard will be automatically dismissed when the overlay is presented.
          */
@@ -1936,6 +1940,10 @@ export namespace Components {
           * If `true`, the popover will open. If `false`, the popover will close. Use this if you need finer grained control over presentation, otherwise just use the popoverController or the `trigger` property. Note: `isOpen` will not automatically be set back to `false` when the popover dismisses. You will need to do that in your code.
          */
         "isOpen": boolean;
+        /**
+          * If `true`, the component passed into `ion-popover` will automatically be mounted when the popover is created. The component will remain mounted even when the popover is dismissed. However, the component will be destroyed when the popover is destroyed. This property is not reactive and should only be used when initially creating a popover.  Note: This feature only applies to inline popovers in JavaScript frameworks such as Angular, React, and Vue.
+         */
+        "keepContentsMounted": boolean;
         /**
           * If `true`, the keyboard will be automatically dismissed when the overlay is presented.
          */
@@ -5484,6 +5492,10 @@ declare namespace LocalJSX {
           * If `true`, the modal will open. If `false`, the modal will close. Use this if you need finer grained control over presentation, otherwise just use the modalController or the `trigger` property. Note: `isOpen` will not automatically be set back to `false` when the modal dismisses. You will need to do that in your code.
          */
         "isOpen"?: boolean;
+        /**
+          * If `true`, the component passed into `ion-modal` will automatically be mounted when the modal is created. The component will remain mounted even when the modal is dismissed. However, the component will be destroyed when the modal is destroyed. This property is not reactive and should only be used when initially creating a modal.  Note: This feature only applies to inline modals in JavaScript frameworks such as Angular, React, and Vue.
+         */
+        "keepContentsMounted"?: boolean;
         /**
           * If `true`, the keyboard will be automatically dismissed when the overlay is presented.
          */
@@ -5775,6 +5787,10 @@ declare namespace LocalJSX {
           * If `true`, the popover will open. If `false`, the popover will close. Use this if you need finer grained control over presentation, otherwise just use the popoverController or the `trigger` property. Note: `isOpen` will not automatically be set back to `false` when the popover dismisses. You will need to do that in your code.
          */
         "isOpen"?: boolean;
+        /**
+          * If `true`, the component passed into `ion-popover` will automatically be mounted when the popover is created. The component will remain mounted even when the popover is dismissed. However, the component will be destroyed when the popover is destroyed. This property is not reactive and should only be used when initially creating a popover.  Note: This feature only applies to inline popovers in JavaScript frameworks such as Angular, React, and Vue.
+         */
+        "keepContentsMounted"?: boolean;
         /**
           * If `true`, the keyboard will be automatically dismissed when the overlay is presented.
          */

core/src/components/modal/modal.tsx

@@ -222,6 +222,19 @@ export class Modal implements ComponentInterface, OverlayInterface {
     this.configureTriggerInteraction();
   }
 
+  /**
+   * If `true`, the component passed into `ion-modal` will
+   * automatically be mounted when the modal is created. The
+   * component will remain mounted even when the modal is dismissed.
+   * However, the component will be destroyed when the modal is
+   * destroyed. This property is not reactive and should only be
+   * used when initially creating a modal.
+   *
+   * Note: This feature only applies to inline modals in JavaScript
+   * frameworks such as Angular, React, and Vue.
+   */
+  @Prop() keepContentsMounted = false;
+
   /**
    * TODO (FW-937)
    * This needs to default to true in the next

core/src/components/popover/popover.tsx

@@ -253,6 +253,19 @@ export class Popover implements ComponentInterface, PopoverInterface {
     }
   }
 
+  /**
+   * If `true`, the component passed into `ion-popover` will
+   * automatically be mounted when the popover is created. The
+   * component will remain mounted even when the popover is dismissed.
+   * However, the component will be destroyed when the popover is
+   * destroyed. This property is not reactive and should only be
+   * used when initially creating a popover.
+   *
+   * Note: This feature only applies to inline popovers in JavaScript
+   * frameworks such as Angular, React, and Vue.
+   */
+  @Prop() keepContentsMounted = false;
+
   /**
    * Emitted after the popover has presented.
    */

packages/react/src/components/createInlineOverlayComponent.tsx

@@ -21,6 +21,7 @@ interface IonicReactInternalProps<ElementType> extends React.HTMLAttributes<Elem
   onDidPresent?: (event: CustomEvent<OverlayEventDetail>) => void;
   onWillDismiss?: (event: CustomEvent<OverlayEventDetail>) => void;
   onWillPresent?: (event: CustomEvent<OverlayEventDetail>) => void;
+  keepContentsMounted?: boolean;
 }
 
 export const createInlineOverlayComponent = <PropType, ElementType>(
@@ -128,7 +129,7 @@ export const createInlineOverlayComponent = <PropType, ElementType>(
        * so conditionally render the component
        * based on the isOpen state.
        */
-      return createElement(tagName, newProps, (this.state.isOpen) ?
+      return createElement(tagName, newProps, (this.state.isOpen || this.props.keepContentsMounted) ?
         createElement('div', {
           id: 'ion-react-wrapper',
           ref: this.wrapperRef,