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9x 9x 9x 499x 409x 409x 409x 409x 463x 36x 36x 36x 36x 54x 529x 24x 24x 24x 24x 830x 830x 1x 1x 1x 208x 208x 208x 208x 208x 208x 208x 208x 6x 202x 202x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 4x 4x 208x 208x 208x 1x 1x 1x 132x 132x 132x 132x 132x 1x 1x 1x 1x 1x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 60x 60x 60x 60x 770x 770x 770x 545x 770x 770x 770x 12x 12x 12x 12x 12x 12x 758x 758x 758x 758x 758x 758x 758x 758x 239x 12x 12x 12x 12x 12x 12x 746x 746x 830x 830x 830x 830x 830x 1x 1x 1x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 1x 1x 1x 1x 1x 1x 60x 60x 60x 60x 60x 24x 24x 36x 36x 36x 60x 60x 1x 1x 1x 2635x 2635x 2635x 1740x 1310x 8x 8x 8x 2635x 2635x 1x | import {
ChangeDetectorRef,
Component,
ElementRef,
EventEmitter,
HostBinding,
Input,
NgZone,
OnDestroy,
Optional,
Output,
ViewChild,
} from '@angular/core';
import {
observeElementOutsideAngular,
observeElementSize,
scrollIntoViewWithSpacingSmooth,
waitForRender,
} from '../../utils/internal-utils';
import { Callback } from '../../utils/util.types';
import { ElementInsertionContextService } from '../element-insertion-context.service';
type StaticAlignment =
| 'start' // Popup starts at anker left-position
| 'end' // Popup end at anker right-position
| 'fill' // Popup starts and anker left-position and ends at anker right-position
| 'middle' // Middle of popup is aligned to left position of anker
| 'right' // Popup starts at anker-right position
| 'left' // Popup ends at anker-left position
| 'max-right'; // Popup is aligned to the right position of window
export type Alignment =
| StaticAlignment
| 'auto' // Sets the alignment to start or end depending on the available space
| 'submenu'; // Sets the alignment to right-inline, left-inline or max-right and the vertical alignment depending on the available space
export type VAlignment =
| 'top' // Popup ends at the top-position of the anker
| 'bottom' // Popup starts at the bottom-position of the anker
| 'inline'; //Popup starts the at top-position of the anker
export type VerticalFlipComputer = (above: number, below: number) => boolean;
export type VerticalFlipStrategy = 'auto' | 'none' | VerticalFlipComputer;
export type OverlayLocation = `${StaticAlignment}-${VAlignment}`;
function toPosition(
alignment: StaticAlignment,
vAlignment: VAlignment,
): OverlayLocation {
return (alignment + '-' + vAlignment) as OverlayLocation;
}
@Component({
selector: 'gc-overlay-container',
templateUrl: './overlay-container.component.html',
styleUrls: ['./overlay-container.component.css'],
})
export class OverlayContainerComponent implements OnDestroy {
@Input()
public offset = 0;
@Input()
public margin = 0;
@Output()
public readonly onVisible: EventEmitter<void> = new EventEmitter<void>();
@Output()
public readonly onDetectHide: EventEmitter<void> = new EventEmitter<void>();
@Output()
public readonly onLocationChange: EventEmitter<OverlayLocation> =
new EventEmitter<OverlayLocation>();
@ViewChild('container')
public containerElement?: ElementRef<HTMLDivElement>;
@HostBinding('style.--gc-extended-scroll-container-height.px')
public extendedScrollContainerHeight = 0;
@HostBinding('style.--gc-extended-scroll-container-top.px')
public extendedScrollContainerTop = 0;
/**
* Minimum space which is guaranteed to the overlay container to be available
* below the `anker` (or `scrollTargetElement` if one is set)
*/
@Input()
public minBottomOffset = 0;
/**
* Decides how much the overlay container will be offset horizontally from the anker.
* Supports positive and negative numbers.
*/
@Input()
public horizontalOffset = 0;
/**
* Decides if the overlay container is allowed to be "detached" from the anker
* if not enough space is available to position it relative to the anker.
* The overlay container is then positioned absolutely to the start of the document.
*/
@Input()
public unboundWhenConstrained = false;
/**
* When set to `menu` there is a different scroll strategy, when `minBottomOffset` is set and the page height gets automatically extended,
* if there is not enough space to show the full menu
*/
@Input()
public responsiveStrategy: 'default' | 'menu' = 'default';
@Input()
public verticalFlipStrategy: VerticalFlipStrategy = 'auto';
/**
* Space left between the popup element and the viewPort bounding box
*/
@Input()
public viewPortOffset = 10;
/**
* Show the popup
*/
@Input()
public set visible(value: boolean) {
const mutObserverOptions: MutationObserverInit = {
attributes: true,
characterData: true,
subtree: true,
childList: true,
};
if (value) {
this._visible = value;
window.addEventListener('scroll', this.scrollHandler, true);
window.addEventListener('resize', this.resizeHandler);
this.mutationObserver = observeElementOutsideAngular(
document.documentElement,
mutObserverOptions,
this.zone,
this.mutationObserverCallback.bind(this),
);
} else {
this._positioned = false;
this._top = 0;
this._left = 0;
this._visible = value;
window.removeEventListener('scroll', this.scrollHandler, true);
window.removeEventListener('resize', this.resizeHandler);
this.updateMaxHeightCssProperty(undefined);
if (this.mutationObserver) {
this.mutationObserver();
}
if (this.extendedScrollContainerHeight > 0) {
this.extendedScrollContainerHeight = 0;
}
}
}
public get visible(): boolean {
return this._visible;
}
/**
* The anker the popup is positioned relative to
*/
@Input()
public set anker(value: ElementRef<HTMLElement> | HTMLElement | undefined) {
this._anker = value instanceof ElementRef ? value.nativeElement : value;
}
public get anker(): ElementRef<HTMLElement> | HTMLElement | undefined {
return this._anker;
}
/**
* To what edge of the element the item is aligned to
*/
@Input()
public set alignment(value: Alignment) {
this._alignment = value;
}
public get alignment(): Alignment {
return this._alignment;
}
/**
* Define the node minBottomOffset is computed against, in case of undefined it it the anker
*/
@Input()
public set scrollTargetElement(value: ElementRef<HTMLElement> | undefined) {
this._scrollTargetElement = value;
}
public get scrollTargetElement(): ElementRef<HTMLElement> | undefined {
return this._scrollTargetElement;
}
/**
* @ignore
*/
public _top = 0;
/**
* @ignore
*/
public _left = 0;
/** @ignore */
public _width?: number = undefined;
/**
* @ignore
*/
public _positioned = false;
/**
* @ignore
*/
private _visible = false;
/**
* @ignore
*/
private _anker?: HTMLElement;
/** @ignore */
private _ankerPositionTop = 0;
/**
* @ignore
*/
private _alignment: Alignment = 'start';
private popupResizeObserverCleanup?: Callback;
/**
* @ignore
*/
private _scrollTargetElement?: ElementRef<HTMLElement>;
private scrollHandler = this.onscroll.bind(this);
private resizeHandler = this.onresize.bind(this);
private mutationObserver?: Callback;
private parentElement: HTMLElement;
constructor(
private elementRef: ElementRef<HTMLElement>,
private zone: NgZone,
private cdr: ChangeDetectorRef,
@Optional() eic: ElementInsertionContextService | null,
) {
this.parentElement = eic?.parent ?? document.body;
this.parentElement.appendChild(elementRef.nativeElement);
}
/**
* @ignore
*/
ngOnDestroy(): void {
this.parentElement.removeChild(this.elementRef.nativeElement);
window.removeEventListener('scroll', this.scrollHandler, true);
window.removeEventListener('resize', this.resizeHandler);
this.popupResizeObserverCleanup?.();
}
/** @ignore */
public _leftVal(): string {
const hOffset =
this._alignment === 'end'
? this.horizontalOffset * -1
: this.horizontalOffset;
return Math.ceil(this._left + hOffset).toString() + 'px';
}
/** @ignore */
public _widthVal(): string {
if (this._width != undefined) {
return Math.ceil(this._width).toString() + 'px';
} else {
return 'auto';
}
}
/**
* @ignore
*/
public async _handleAttach() {
this.popupResizeObserverCleanup?.();
const popupNode = this.elementRef.nativeElement.firstElementChild;
const el = this._anker;
await waitForRender();
if (popupNode && el) {
this.popupResizeObserverCleanup = observeElementSize(
popupNode,
this.zone,
() => this.updatePopupPosition(),
);
if (this.minBottomOffset >= 0) {
await this.scrollIntoView(popupNode, el);
}
this._positioned = this.updatePopupPosition() !== undefined;
if (this._positioned) {
if (this.responsiveStrategy === 'menu') {
this.resizeScrollContainer(popupNode);
}
this.onVisible.next();
}
}
}
/**
* @ignore
*/
public updateMaxHeightCssProperty(value: number | undefined) {
if (value !== undefined) {
this.elementRef.nativeElement.style.setProperty(
'--gc-overlay-max-height',
`${value.toFixed(0)}px`,
);
} else {
this.elementRef.nativeElement.style.removeProperty(
'--gc-overlay-max-height',
);
}
}
private onscroll(event: Event): void {
if (!this._positioned) {
return;
}
const target = event.target as HTMLElement;
if (this._anker && target.contains(this._anker)) {
this.updatePopupPosition();
}
}
private onresize(): void {
if (!this._positioned) {
return;
}
this.updatePopupPosition();
this.onDetectHide.next();
}
private resizeScrollContainer(popupNode: Element) {
const totalPageHeight = document.documentElement.scrollHeight;
const scrollTopHeight = document.documentElement.scrollTop;
if (
totalPageHeight - this._top - scrollTopHeight <
popupNode.clientHeight
) {
this.extendedScrollContainerTop = this._top + scrollTopHeight;
this.extendedScrollContainerHeight = popupNode.clientHeight + 16;
}
}
private async scrollIntoView(popupNode: Element, anker: HTMLElement) {
let bottomOffset = 0;
let verticalAlignment = undefined;
const prefHeight = Math.ceil(popupNode.getBoundingClientRect().height);
if (this.responsiveStrategy === 'default') {
bottomOffset =
Math.min(this.minBottomOffset, prefHeight) + this.viewPortOffset;
} else {
const pageHeight = document.documentElement.clientHeight;
/**
* updatePopupPosition() is needed, because menu needs its correct top position and the vertical alignment to calculate scroll amount
*/
verticalAlignment = this.updatePopupPosition();
if (
verticalAlignment === 'top' &&
this._top < 0 &&
this._top + prefHeight < this.minBottomOffset
) {
bottomOffset = Math.max(
this.viewPortOffset,
pageHeight -
(prefHeight +
anker.getBoundingClientRect().height +
this.offset +
this.viewPortOffset),
);
} else if (
pageHeight - this._top < prefHeight &&
pageHeight - this._top < this.minBottomOffset
) {
bottomOffset = Math.min(
pageHeight -
anker.getBoundingClientRect().height -
this.viewPortOffset,
prefHeight -
anker.getBoundingClientRect().bottom +
this._top +
this.viewPortOffset,
);
}
}
if (bottomOffset > 0) {
const negativeScroll = verticalAlignment === 'top';
if (this.scrollTargetElement) {
await scrollIntoViewWithSpacingSmooth(
this.scrollTargetElement.nativeElement,
bottomOffset,
negativeScroll,
);
} else {
await scrollIntoViewWithSpacingSmooth(
anker,
bottomOffset,
negativeScroll,
);
}
}
}
/**
* @ignore
*/
private updatePopupPosition(): VAlignment | undefined {
const ankerNode = this._anker;
if (ankerNode === undefined) {
return undefined;
}
const ankerBounds = ankerNode.getBoundingClientRect();
const popupNodes = this.elementRef.nativeElement.children;
if (popupNodes.length === 0) {
return undefined;
}
const popupNode = popupNodes[0] as HTMLElement;
const staticAlignment: StaticAlignment =
this._alignment === 'auto' || this._alignment === 'submenu'
? this.autoPosition(ankerBounds, popupNode)
: this._alignment;
const verticalPosition = this.computeVerticalAlignment(
ankerBounds,
popupNode,
staticAlignment,
);
this._ankerPositionTop = ankerNode.offsetTop;
const positioned = this.computeAlignment(
ankerBounds,
popupNode,
verticalPosition,
staticAlignment,
);
return positioned ? verticalPosition : undefined;
}
/**
* @ignore
*/
private autoPosition(
ankerBounds: DOMRect,
popupNode: HTMLElement,
): StaticAlignment {
const popupWidth = popupNode.clientWidth + this.margin;
const documentRightEdge =
document.documentElement.getBoundingClientRect().right;
const ankerLeftEdge = ankerBounds.left;
const innerMargin = 4;
const outerMargin = 16;
const submenuMinWidth = 140;
if (this._alignment === 'submenu') {
if (
documentRightEdge - ankerBounds.right - innerMargin >
submenuMinWidth + outerMargin
) {
return 'right';
} else if (
ankerBounds.left + innerMargin >
submenuMinWidth + outerMargin
) {
return 'left';
} else {
return 'max-right';
}
} else if (popupWidth + ankerLeftEdge > documentRightEdge) {
return 'end';
} else {
return 'start';
}
}
/**
* @ignore
*/
private computeAlignment(
ankerBounds: DOMRect,
popupNode: HTMLElement,
verticalPosition: VAlignment,
alignment: StaticAlignment,
): boolean {
const popupWidth = popupNode.clientWidth;
switch (alignment) {
case 'end':
this.calculateLeftForEndAlignment(ankerBounds, popupNode, popupWidth);
this._width = undefined;
this.onLocationChange.emit(toPosition(alignment, verticalPosition));
return true;
case 'start':
if (
this.unboundWhenConstrained &&
window.innerWidth - ankerBounds.right >= popupWidth
) {
this._left = ankerBounds.left;
} else {
this.computeStartAlignment(ankerBounds);
}
this._width = undefined;
this.onLocationChange.emit(toPosition(alignment, verticalPosition));
return true;
case 'middle':
this._left = ankerBounds.left - popupWidth / 2;
this._width = undefined;
this.onLocationChange.emit(toPosition(alignment, verticalPosition));
return true;
case 'fill':
this._left = ankerBounds.left;
this._width = ankerBounds.width;
this.onLocationChange.emit(toPosition(alignment, verticalPosition));
return true;
case 'right':
this._left = ankerBounds.left + ankerBounds.width;
this._width = undefined;
this.onLocationChange.emit(toPosition(alignment, verticalPosition));
return true;
case 'left':
this._left = ankerBounds.left - popupNode.clientWidth;
this._width = undefined;
if (this._left <= 0) {
this._left = 0;
this._width = ankerBounds.left;
}
this.onLocationChange.emit(toPosition(alignment, verticalPosition));
return true;
case 'max-right':
this._left = window.innerWidth - popupNode.clientWidth;
this._width = undefined;
this.onLocationChange.emit(toPosition(alignment, verticalPosition));
return true;
}
}
/** @ignore */
private calculateLeftForEndAlignment(
ankerBounds: DOMRect,
popupNode: HTMLElement,
popupWidth: number,
): void {
const innerMargin = 4;
const calculateLeft = () => {
if (ankerBounds.right + innerMargin > window.innerWidth) {
this._left = window.innerWidth - popupWidth - innerMargin;
} else {
this._left = ankerBounds.left + ankerBounds.width - popupWidth;
}
};
if (this.unboundWhenConstrained) {
// do only if there is not enough space
if (window.innerWidth < popupNode.offsetLeft + popupNode.clientWidth) {
calculateLeft();
}
} else {
calculateLeft();
}
if (this._left < 0) {
if (window.innerWidth >= popupNode.offsetLeft + popupNode.clientWidth) {
this._left = this.horizontalOffset + this.margin;
} else {
this._left = this.margin / 2;
}
}
}
/** @ignore */
private computeStartAlignment(ankerBounds: DOMRect) {
if (this.unboundWhenConstrained) {
this._left = this.horizontalOffset + this.margin;
} else {
this._left = ankerBounds.left;
}
}
/**
* @ignore
*/
private computeVerticalAlignment(
ankerBounds: DOMRect,
popupNode: HTMLElement,
staticAlignment: StaticAlignment,
): VAlignment {
let verticalPosition: VAlignment = 'bottom';
this._top = this.offset + ankerBounds.top + ankerBounds.height;
const below =
document.documentElement.clientHeight - this._top - this.margin;
const above = this._top + this.margin;
if (this._alignment === 'submenu') {
verticalPosition = this.computeVerticalAlignmentForSubmenu(
staticAlignment,
ankerBounds,
verticalPosition,
);
} else if (
this.verticalFlipStrategy !== 'auto' &&
this.verticalFlipStrategy !== 'none'
) {
verticalPosition = this.computeVerticalAlignmentUsingFlipComputer(
above,
below,
verticalPosition,
ankerBounds,
popupNode,
);
} else {
if (this.unboundWhenConstrained) {
verticalPosition = this.computeVerticalAlignmentWhenUnbound(
popupNode,
below,
above,
ankerBounds,
verticalPosition,
);
} else {
/**
* There must be enough space available on top of the anker, because the page is only allowed to extend to the bottom if needed
* And there should be some space between the top of the current window and the anker to ensure scrollIntoView() is working correctly
*/
if (
this.verticalFlipStrategy === 'auto' &&
popupNode.clientHeight > below &&
above + document.documentElement.scrollTop > popupNode.clientHeight &&
ankerBounds.top > this.viewPortOffset
) {
verticalPosition = 'top';
this._top = ankerBounds.top - popupNode.clientHeight - this.offset;
this.updateMaxHeightCssProperty(above);
} else {
this.updateMaxHeightCssProperty(below);
}
}
}
return verticalPosition;
}
/** @ignore */
private computeVerticalAlignmentWhenUnbound(
popupNode: HTMLElement,
below: number,
above: number,
ankerBounds: DOMRect,
verticalPosition: VAlignment,
): VAlignment {
if (
this.verticalFlipStrategy === 'auto' &&
popupNode.clientHeight > below &&
above + document.documentElement.scrollTop > popupNode.clientHeight &&
ankerBounds.top > this.viewPortOffset
) {
this._top = ankerBounds.top - popupNode.clientHeight - this.offset;
return 'top';
} else if (popupNode.clientHeight > below) {
this._top = this.margin;
return verticalPosition;
} else {
return verticalPosition;
}
}
/** @ignore */
private computeVerticalAlignmentUsingFlipComputer(
above: number,
below: number,
verticalPosition: VAlignment,
ankerBounds: DOMRect,
popupNode: HTMLElement,
): VAlignment {
if (
typeof this.verticalFlipStrategy !== 'string' &&
this.verticalFlipStrategy(above, below)
) {
this._top = ankerBounds.top - popupNode.clientHeight;
this.updateMaxHeightCssProperty(above);
return 'top';
} else {
this.updateMaxHeightCssProperty(below);
return verticalPosition;
}
}
/** @ignore */
private computeVerticalAlignmentForSubmenu(
staticAlignment: string,
ankerBounds: DOMRect,
verticalPosition: VAlignment,
): VAlignment {
if (staticAlignment === 'max-right') {
this._top = ankerBounds.top + ankerBounds.height;
return verticalPosition;
} else {
this._top = ankerBounds.top;
return 'inline';
}
}
/** @ignore */
private mutationObserverCallback() {
// only update popup position if anker element has moved from previous position
if (
this._positioned &&
this._ankerPositionTop !== 0 &&
this._anker?.offsetTop !== this._ankerPositionTop
) {
this.updatePopupPosition();
this.cdr.detectChanges();
}
}
}
|