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ApplicationRef,
ComponentRef,
ElementRef,
EmbeddedViewRef,
Injectable,
Injector,
StaticProvider,
Type,
createComponent,
} from '@angular/core';
import { AlertDialogComponent } from '../../alert-dialog/alert-dialog.component';
import { DynamicHeadingLevelService } from '../../dynamic-heading/dynamic-heading-level.service';
import { ElementInsertionContextService } from '../element-insertion-context.service';
import {
DialogModalOverlayContainerComponent,
DialogOverlayRef,
} from './dialog-modal-overlay-container/dialog-modal-overlay-container';
import {
SidebarOverlayContainerComponent,
SidebarOverlayRef,
} from './sidebar-overlay-container/sidebar-overlay-container.component';
const MODAL_STACK: SidebarOverlayContainerComponent[] = [];
export type ModalType = 'default' | 'error';
export class ModalConfig {
public readonly type: ModalType;
public readonly offsetTop?: number;
public readonly label?: string;
public readonly variant?: string;
constructor(init?: {
type?: ModalType;
offsetTop?: number;
variant?: 'dialog' | 'sidebar' | 'alertdialog';
label?: string;
}) {
this.type = init?.type ?? 'default';
this.offsetTop = init?.offsetTop;
this.label = init?.label;
this.variant = init?.variant;
}
}
@Injectable()
export class ModalOverlayContainerService {
constructor(
private appRef: ApplicationRef,
private injector: Injector,
) {}
public openSidebar<T>(
component: Type<T>,
config?: ModalConfig,
additionalProviders?: StaticProvider[],
): {
overlayRef: SidebarOverlayRef;
componentRef: ComponentRef<T>;
instance: T;
} {
const ref = this.initSidebarOverlay<T>(
component,
config,
additionalProviders,
);
return {
overlayRef: ref.overlayRef,
componentRef: ref.componentRef,
instance: ref.componentRef.instance,
};
}
public openDialog<T>(
component: Type<T>,
config?: ModalConfig,
additionalProviders?: StaticProvider[],
): {
overlayRef: DialogOverlayRef;
componentRef: ComponentRef<T>;
instance: T;
} {
const ref = this.initDialogOverlay<T>(
component,
config,
additionalProviders,
);
return {
overlayRef: ref.overlayRef,
componentRef: ref.componentRef,
instance: ref.componentRef.instance,
};
}
private initDialogOverlay<T>(
component: Type<T>,
config?: ModalConfig,
additionalProviders?: StaticProvider[],
): { componentRef: ComponentRef<T>; overlayRef: DialogOverlayRef } {
const dialogOverlayRef: DialogOverlayRef = new DialogOverlayRef();
const modalProviders: StaticProvider[] = [
{ provide: ModalConfig, useValue: config ?? new ModalConfig() },
];
if (additionalProviders !== undefined) {
modalProviders.push(additionalProviders);
}
const modalComponentInjector = Injector.create({
parent: this.injector,
providers: modalProviders,
});
const createModalComponentOptions = {
environmentInjector: this.appRef.injector,
elementInjector: modalComponentInjector,
};
const modalRef = createComponent(
DialogModalOverlayContainerComponent,
createModalComponentOptions,
);
const dialogElement = modalRef.injector
.get<ElementRef<HTMLElement>>(ElementRef)
.nativeElement.querySelector('dialog');
if (dialogElement === null) {
// HTMLDialogElement always exists in the DialogModalOverlayContainerComponent
throw new Error('unable to find dialog element');
}
const componentProviders: StaticProvider[] = [
{ provide: DialogOverlayRef, useValue: dialogOverlayRef },
{
provide: DynamicHeadingLevelService,
useValue: new DynamicHeadingLevelService(null, {
kind: 'absolute',
start: 2,
}),
},
{
provide: ElementInsertionContextService,
useValue: new ElementInsertionContextService(dialogElement),
},
];
if (additionalProviders !== undefined) {
componentProviders.push(additionalProviders);
}
const componentInjector = Injector.create({
parent: this.injector,
providers: componentProviders,
});
const createComponentOptions = {
environmentInjector: this.appRef.injector,
elementInjector: componentInjector,
};
const componentRef = createComponent(component, createComponentOptions);
modalRef.setInput('component', componentRef);
modalRef.setInput('label', config?.label);
if (componentRef.componentType === AlertDialogComponent) {
const alertDialogComponent =
componentRef.instance as AlertDialogComponent;
modalRef.setInput('describedby', alertDialogComponent._descId);
modalRef.setInput('labelledby', alertDialogComponent._labelId);
}
this.appRef.attachView(modalRef.hostView);
const modalDomElement = (modalRef.hostView as EmbeddedViewRef<never>)
.rootNodes[0] as Node; // NOSONAR - false positive typescript:S4325
const destroy = () => {
this.appRef.detachView(componentRef.hostView);
this.appRef.detachView(modalRef.hostView);
componentRef.destroy();
modalRef.destroy();
};
// Force blurring so that even if nothing is focused later
// the opening control does not have focus anymore
if (document.activeElement) {
(document.activeElement as HTMLElement).blur();
}
document.body.appendChild(modalDomElement);
// listens for elements' native close events
modalRef.instance.onClose.subscribe(destroy);
modalRef.instance.onCancel.subscribe(evt => {
dialogOverlayRef.onCancel.emit(evt);
});
dialogOverlayRef.onClosed.subscribe(destroy);
return { componentRef, overlayRef: dialogOverlayRef };
}
private initSidebarOverlay<T>(
component: Type<T>,
config?: ModalConfig,
additionalProviders?: StaticProvider[],
): { componentRef: ComponentRef<T>; overlayRef: SidebarOverlayRef } {
const sidebarOverlayRef: SidebarOverlayRef = new SidebarOverlayRef();
const providers: StaticProvider[] = [
{ provide: SidebarOverlayRef, useValue: sidebarOverlayRef },
{ provide: ModalConfig, useValue: config ?? new ModalConfig() },
{
provide: DynamicHeadingLevelService,
useValue: new DynamicHeadingLevelService(null, {
kind: 'absolute',
start: 2,
}),
},
];
if (additionalProviders !== undefined) {
providers.push(additionalProviders);
}
const componentInjector = Injector.create({
parent: this.injector,
providers,
});
const createComponentOptions = {
environmentInjector: this.appRef.injector,
elementInjector: componentInjector,
};
const modalRef = createComponent(
SidebarOverlayContainerComponent,
createComponentOptions,
);
if (MODAL_STACK.length > 0) {
MODAL_STACK[MODAL_STACK.length - 1]._inactive = true;
}
MODAL_STACK.push(modalRef.instance);
const componentRef = createComponent(component, createComponentOptions);
this.appRef.attachView(modalRef.hostView);
this.appRef.attachView(componentRef.hostView);
const modalDomElement = (modalRef.hostView as EmbeddedViewRef<never>)
.rootNodes[0] as Node; // NOSONAR - false positive typescript:S4325
const domElem = (componentRef.hostView as EmbeddedViewRef<never>)
.rootNodes[0] as Node; // NOSONAR - false positive typescript:S4325
// Force blurring so that even if nothing is focused later
// the opening control does not have focus anymore
if (document.activeElement) {
(document.activeElement as HTMLElement).blur();
}
modalDomElement.appendChild(domElem);
document.body.appendChild(modalDomElement);
sidebarOverlayRef.onClosed.subscribe(() => {
MODAL_STACK.pop();
if (MODAL_STACK.length > 0) {
MODAL_STACK[MODAL_STACK.length - 1]._inactive = false;
}
this.appRef.detachView(componentRef.hostView);
componentRef.destroy();
this.appRef.detachView(modalRef.hostView);
modalRef.destroy();
});
return { componentRef, overlayRef: sidebarOverlayRef };
}
}
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