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* Copyright (c) Siemens 2016 - 2025
* SPDX-License-Identifier: MIT
*/
import { Overlay, OverlayRef } from '@angular/cdk/overlay';
import { ComponentPortal } from '@angular/cdk/portal';
import {
booleanAttribute,
ComponentRef,
computed,
Directive,
ElementRef,
HostListener,
inject,
input,
OnDestroy,
OnInit,
output,
TemplateRef
} from '@angular/core';
import { getOverlay, getPositionStrategy, hasTrigger, positions } from '@siemens/element-ng/common';
import { Subject, takeUntil } from 'rxjs';
import { PopoverComponent } from './si-popover.component';
/**
* @deprecated Use {@link SiPopoverDirective} instead.
*/
@Directive({
selector: '[siPopoverLegacy]',
exportAs: 'si-popover'
})
export class SiPopoverLegacyDirective implements OnInit, OnDestroy {
/**
* The popover text to be displayed
*/
readonly siPopoverLegacy = input<string | TemplateRef<any>>();
/**
* The placement of the popover. One of 'top', 'start', end', 'bottom'
*
* @defaultValue 'auto'
*/
readonly placement = input<keyof typeof positions>('auto');
readonly placementInternal = computed(() => {
if (
this.placement() !== 'top' &&
this.placement() !== 'bottom' &&
this.placement() !== 'start' &&
this.placement() !== 'end'
) {
return 'auto';
} else E{
return this.placement();
}
});
/**
* The trigger event(s) on which the popover shall be displayed.
* Applications can pass multiple triggers separated by space.
* Supported events are 'click', 'hover' and 'focus'.
*
* **Limitations:**
* Safari browsers do not raise a 'focus' event on host element click and 'focus'
* on tab key has to be enabled in the advanced browser settings.
*
* @defaultValue 'click'
*/
readonly triggers = input('click');
/**
* The title to be displayed on top for the popover
*
* @defaultValue ''
*/
readonly popoverTitle = input('');
/**
* The class that will be applied to container of the popover
*
* @defaultValue ''
*/
readonly containerClass = input('');
/**
* The flag determines whether to close popover on clicking outside
*
* @defaultValue true
*/
readonly outsideClick = input(true, { transform: booleanAttribute });
/**
* The icon to be displayed besides popover title
*/
readonly icon = input<string>();
/**
* Specify whether or not the popover is currently shown
*
* @defaultValue false
*/
readonly isOpen = input<boolean | undefined, unknown>(false, { transform: booleanAttribute });
/**
* The context for the attached template
*/
readonly popoverContext = input<unknown>();
/**
* Emits an event when the popover is shown
*/
readonly shown = output<void>();
/**
* Emits an event when the popover is hidden
*/
readonly hidden = output<void>();
private overlayref?: OverlayRef;
private overlay = inject(Overlay);
private elementRef = inject(ElementRef);
private destroyer = new Subject<void>();
ngOnInit(): void {
Iif (this.isOpen()) {
this.show();
}
}
ngOnDestroy(): void {
this.overlayref?.dispose();
this.destroyer.next();
this.destroyer.complete();
}
/**
* Displays popover and emits 'shown' event.
*/
show(): void {
if (!this.overlayref?.hasAttached()) {
const triggers = this.triggers();
const backdrop =
this.outsideClick() && !hasTrigger('focus', triggers) && !hasTrigger('hover', triggers);
this.overlayref = getOverlay(
this.elementRef,
this.overlay,
backdrop,
this.placementInternal()
);
if (backdrop) {
this.overlayref
.backdropClick()
.pipe(takeUntil(this.destroyer))
.subscribe(() => this.hide());
}
}
Iif (this.overlayref.hasAttached()) {
return;
}
const popoverPortal = new ComponentPortal(PopoverComponent);
const popoverRef: ComponentRef<PopoverComponent> = this.overlayref.attach(popoverPortal);
popoverRef.setInput('popover', this.siPopoverLegacy());
popoverRef.setInput('popoverTitle', this.popoverTitle());
popoverRef.setInput('icon', this.icon());
popoverRef.setInput('containerClass', this.containerClass());
popoverRef.setInput('popoverContext', this.popoverContext());
const positionStrategy = getPositionStrategy(this.overlayref);
positionStrategy?.positionChanges
.pipe(takeUntil(this.destroyer))
.subscribe(change => popoverRef.instance.updateArrow(change, this.elementRef));
this.shown.emit();
}
/**
* Hides the popover and emits 'hidden' event.
*/
hide(): void {
if (this.overlayref?.hasAttached()) {
this.overlayref?.detach();
this.hidden.emit();
this.destroyer.next();
}
}
/**
* Updates the position of the popover based on the position strategy.
*/
updatePosition(): void {
this.overlayref?.updatePosition();
}
@HostListener('mouseenter', ['"hover"'])
@HostListener('mouseleave', ['"hover"'])
@HostListener('focus', ['"focus"'])
@HostListener('click', ['"click"'])
protected onTrigger(trigger: string): void {
if (hasTrigger(trigger, this.triggers())) {
if (this.overlayref?.hasAttached()) {
this.hide();
} else {
this.show();
}
}
}
@HostListener('touchstart')
@HostListener('focusout')
protected focusOut(): void {
if (hasTrigger('focus', this.triggers())) {
if (this.outsideClick()) {
this.hide();
}
}
}
}
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