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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 4x 8x 1x 10x 8x | /**
* Copyright (c) Siemens 2016 - 2025
* SPDX-License-Identifier: MIT
*/
import { Overlay, OverlayRef } from '@angular/cdk/overlay';
import { ComponentPortal } from '@angular/cdk/portal';
import {
ComponentRef,
ElementRef,
inject,
Injectable,
Injector,
TemplateRef,
Type
} from '@angular/core';
import { getOverlay, getPositionStrategy, positions } from '@siemens/element-ng/common';
import { TranslatableString } from '@siemens/element-translate-ng/translate';
import { TooltipComponent } from './si-tooltip.component';
/**
* TooltipRef is attached to a specific element.
* Use it to show or hide a tooltip for that element.
*
* @internal
*/
class TooltipRef {
constructor(
private overlayRef: OverlayRef,
private element: ElementRef,
private describedBy: string,
private injector?: Injector
) {}
show(content: TranslatableString | TemplateRef<any> | Type<any>, tooltipContext?: unknown): void {
Iif (this.overlayRef.hasAttached()) {
return;
}
const toolTipPortal = new ComponentPortal(TooltipComponent, undefined, this.injector);
const tooltipRef: ComponentRef<TooltipComponent> = this.overlayRef.attach(toolTipPortal);
tooltipRef.setInput('tooltip', content);
tooltipRef.setInput('id', this.describedBy);
tooltipRef.setInput('tooltipContext', tooltipContext);
const positionStrategy = getPositionStrategy(this.overlayRef);
positionStrategy?.positionChanges.subscribe(change =>
tooltipRef.instance.updateTooltipPosition(change, this.element)
);
}
hide(): void {
this.overlayRef.detach();
}
destroy(): void {
this.overlayRef.dispose();
}
}
/**
* A service to create tooltips for specific elements.
* Use this if the tooltip directive is not suitable.
* Must not be used outside element-ng.
*
* @internal
*/
// We cannot provide this in root, as people may override the cdk overlay creation.
@Injectable()
export class SiTooltipService {
private overlay = inject(Overlay);
createTooltip(config: {
describedBy: string;
element: ElementRef;
placement: keyof typeof positions;
injector?: Injector;
}): TooltipRef {
return new TooltipRef(
getOverlay(config.element, this.overlay, false, config.placement),
config.element,
config.describedBy,
config.injector
);
}
}
export type { TooltipRef };
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