@nebular/theme
Version:
@nebular/theme
185 lines • 6.25 kB
JavaScript
import { ComponentFactoryResolver, Injectable, NgZone } from '@angular/core';
import { filter, takeUntil, distinctUntilChanged } from 'rxjs/operators';
import { Subject, BehaviorSubject, merge } from 'rxjs';
import { createContainer, NbOverlayService, patch } from '../overlay-service';
import { NbOverlayContainer } from '../mapping';
export class NbDynamicOverlay {
constructor(overlay, componentFactoryResolver, zone, overlayContainer) {
this.overlay = overlay;
this.componentFactoryResolver = componentFactoryResolver;
this.zone = zone;
this.overlayContainer = overlayContainer;
this.context = {};
this.overlayConfig = {};
this.positionStrategyChange$ = new Subject();
this.isShown$ = new BehaviorSubject(false);
this.destroy$ = new Subject();
this.overlayDestroy$ = new Subject();
}
get isAttached() {
return this.ref && this.ref.hasAttached();
}
get isShown() {
return this.isShown$.pipe(distinctUntilChanged());
}
create(componentType, content, context, positionStrategy, overlayConfig = {}) {
this.setContentAndContext(content, context);
this.setComponent(componentType);
this.setPositionStrategy(positionStrategy);
this.setOverlayConfig(overlayConfig);
return this;
}
setContent(content) {
this.content = content;
if (this.container) {
this.updateContext();
}
this.updatePosition();
}
setContext(context) {
this.context = context;
if (this.container) {
this.updateContext();
}
this.updatePosition();
}
setContentAndContext(content, context) {
this.content = content;
this.context = context;
if (this.container) {
this.updateContext();
}
this.updatePosition();
}
setComponent(componentType) {
this.componentType = componentType;
// in case the component is shown we recreate it and show it back
const wasAttached = this.isAttached;
this.disposeOverlayRef();
if (wasAttached) {
this.show();
}
}
setPositionStrategy(positionStrategy) {
this.positionStrategyChange$.next();
this.positionStrategy = positionStrategy;
this.positionStrategy.positionChange
.pipe(filter(() => !!this.container), takeUntil(merge(this.positionStrategyChange$, this.destroy$)))
.subscribe((position) => {
this.lastAppliedPosition = position;
patch(this.container, { position });
});
if (this.ref) {
this.ref.updatePositionStrategy(this.positionStrategy);
}
}
setOverlayConfig(overlayConfig) {
this.overlayConfig = overlayConfig;
const wasAttached = this.isAttached;
this.disposeOverlayRef();
if (wasAttached) {
this.show();
}
}
show() {
if (!this.ref) {
this.createOverlay();
}
this.renderContainer();
if (!this.hasOverlayInContainer()) {
// Dispose overlay ref as it refers to the old overlay container and create new by calling `show`
this.disposeOverlayRef();
return this.show();
}
this.isShown$.next(true);
}
hide() {
if (!this.ref) {
return;
}
this.ref.detach();
this.container = null;
this.isShown$.next(false);
}
toggle() {
if (this.isAttached) {
this.hide();
}
else {
this.show();
}
}
dispose() {
this.destroy$.next();
this.destroy$.complete();
this.hide();
this.disposeOverlayRef();
this.isShown$.complete();
this.positionStrategyChange$.complete();
this.overlayDestroy$.complete();
}
getContainer() {
return this.container;
}
createOverlay() {
this.ref = this.overlay.create(Object.assign({ positionStrategy: this.positionStrategy, scrollStrategy: this.overlay.scrollStrategies.reposition() }, this.overlayConfig));
this.updatePositionWhenStable(this.ref);
}
renderContainer() {
const containerContext = this.createContainerContext();
if (!this.container) {
this.container = createContainer(this.ref, this.componentType, containerContext, this.componentFactoryResolver);
}
this.container.instance.renderContent();
}
updateContext() {
const containerContext = this.createContainerContext();
Object.assign(this.container.instance, containerContext);
this.container.instance.renderContent();
this.container.changeDetectorRef.detectChanges();
}
createContainerContext() {
return {
content: this.content,
context: this.context,
cfr: this.componentFactoryResolver,
position: this.lastAppliedPosition,
};
}
/**
* Dimensions of the container may change after content update. So we listen to zone.stable event to
* reposition the container.
*/
updatePositionWhenStable(overlay) {
const overlayDestroy$ = this.overlayDestroy$.pipe(filter((destroyedOverlay) => destroyedOverlay === overlay));
this.zone.onStable
.pipe(takeUntil(merge(this.destroy$, overlayDestroy$)))
.subscribe(() => this.updatePosition());
}
updatePosition() {
if (this.ref) {
this.ref.updatePosition();
}
}
hasOverlayInContainer() {
return this.overlayContainer.getContainerElement().contains(this.ref.hostElement);
}
disposeOverlayRef() {
if (this.ref) {
this.ref.dispose();
this.overlayDestroy$.next(this.ref);
this.ref = null;
this.container = null;
}
}
}
NbDynamicOverlay.decorators = [
{ type: Injectable }
];
NbDynamicOverlay.ctorParameters = () => [
{ type: NbOverlayService },
{ type: ComponentFactoryResolver },
{ type: NgZone },
{ type: NbOverlayContainer }
];
//# sourceMappingURL=dynamic-overlay.js.map