@ux-aspects/ux-aspects
Version:
Open source user interface framework for building modern, responsive, mobile big data applications
126 lines • 20.2 kB
JavaScript
import { Injectable } from '@angular/core';
import * as i0 from "@angular/core";
export class OverlayPlacementService {
/** Updates the position of the current menu. */
updatePosition(overlayRef, placement, alignment, customFallbackPlacement) {
const position = overlayRef.getConfig().positionStrategy;
const origin = this.getOrigin(placement, alignment);
const overlay = this.getOverlayPosition(placement, alignment);
position.withPositions(this.addPositions(origin, overlay, customFallbackPlacement));
}
/** Apply position to position strategy */
addPositions(origin, overlay, customFallbackPlacement) {
if (customFallbackPlacement) {
return [
{ ...origin.main, ...overlay.main },
this.getFallbackPosition(customFallbackPlacement),
];
}
else {
return [
{ ...origin.main, ...overlay.main },
{ ...origin.fallback, ...overlay.fallback },
{ ...{ originX: origin.main.originX, originY: this.invertHorizontalPosition(origin.main.originY) }, ...{ overlayX: overlay.main.overlayX, overlayY: this.invertHorizontalPosition(overlay.main.overlayY) } },
{ ...{ originX: origin.fallback.originX, originY: this.invertHorizontalPosition(origin.fallback.originY) }, ...{ overlayX: overlay.fallback.overlayX, overlayY: this.invertHorizontalPosition(overlay.fallback.overlayY) } }
];
}
}
/** Get the origin position based on the specified tooltip placement */
getOrigin(initialPlacement, alignment) {
// ensure placement is defined
const placement = initialPlacement || 'bottom';
let originPosition;
if (placement === 'top' || placement === 'bottom') {
originPosition = { originX: alignment, originY: placement };
}
if (placement === 'left') {
originPosition = { originX: 'start', originY: this.getVerticalAlignment(alignment) };
}
if (placement === 'right') {
originPosition = { originX: 'end', originY: this.getVerticalAlignment(alignment) };
}
const { x, y } = this.invertPosition(placement, originPosition.originX, originPosition.originY);
return {
main: originPosition,
fallback: { originX: x, originY: y },
};
}
/** Calculate the overlay position based on the specified tooltip placement */
getOverlayPosition(initialPlacement, alignment) {
// ensure placement is defined
const placement = initialPlacement || 'top';
let overlayPosition;
if (placement === 'top') {
overlayPosition = { overlayX: alignment, overlayY: 'bottom' };
}
if (placement === 'bottom') {
overlayPosition = { overlayX: alignment, overlayY: 'top' };
}
if (placement === 'left') {
overlayPosition = { overlayX: 'end', overlayY: this.getVerticalAlignment(alignment) };
}
if (placement === 'right') {
overlayPosition = { overlayX: 'start', overlayY: this.getVerticalAlignment(alignment) };
}
const { x, y } = this.invertPosition(placement, overlayPosition.overlayX, overlayPosition.overlayY);
return {
main: overlayPosition,
fallback: { overlayX: x, overlayY: y },
};
}
/** Convert the alignment property to a valid CDK alignment value */
getVerticalAlignment(alignment) {
switch (alignment) {
case 'start':
return 'top';
case 'end':
return 'bottom';
default:
return alignment;
}
}
/** Inverts an overlay position. */
invertPosition(placement, x, y) {
if (placement === 'top' || placement === 'bottom') {
if (y === 'top') {
y = 'bottom';
}
else if (y === 'bottom') {
y = 'top';
}
}
else {
if (x === 'end') {
x = 'start';
}
else if (x === 'start') {
x = 'end';
}
}
return { x, y };
}
invertHorizontalPosition(y) {
return y === 'top' ? 'bottom' : 'top';
}
getFallbackPosition(fallbackPlacement) {
switch (fallbackPlacement) {
case 'left':
return { originX: 'start', originY: 'center', overlayX: 'end', overlayY: 'center' };
case 'right':
return { originX: 'end', originY: 'center', overlayX: 'start', overlayY: 'center' };
case 'top':
return { originX: 'center', originY: 'top', overlayX: 'center', overlayY: 'bottom' };
case 'bottom':
return { originX: 'center', originY: 'bottom', overlayX: 'center', overlayY: 'top' };
}
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: OverlayPlacementService, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: OverlayPlacementService, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: OverlayPlacementService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root',
}]
}] });
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{\n    ConnectedPosition,\n    FlexibleConnectedPositionStrategy,\n    HorizontalConnectionPos,\n    OriginConnectionPosition,\n    OverlayConnectionPosition,\n    OverlayRef,\n    VerticalConnectionPos\n} from '@angular/cdk/overlay';\nimport { Injectable } from '@angular/core';\nimport { AnchorPlacement } from '../../common/overlay/index';\n\n@Injectable({\n    providedIn: 'root',\n})\nexport class OverlayPlacementService {\n\n    /** Updates the position of the current menu. */\n    updatePosition(\n        overlayRef: OverlayRef,\n        placement: string,\n        alignment: string,\n        customFallbackPlacement?: AnchorPlacement,\n    ): void {\n        const position = overlayRef.getConfig().positionStrategy as FlexibleConnectedPositionStrategy;\n        const origin = this.getOrigin(placement, alignment);\n        const overlay = this.getOverlayPosition(placement, alignment);\n\n        position.withPositions(this.addPositions(origin, overlay, customFallbackPlacement));\n    }\n\n    /** Apply position to position strategy */\n    private addPositions(\n        origin: OriginConnectedPositions,\n        overlay: OverlayConnectedPositions,\n        customFallbackPlacement: AnchorPlacement\n    ): ConnectedPosition[] {\n        if (customFallbackPlacement) {\n            return [\n                { ...origin.main, ...overlay.main },\n                this.getFallbackPosition(customFallbackPlacement),\n            ];\n        } else {\n            return [\n                { ...origin.main, ...overlay.main },\n                { ...origin.fallback, ...overlay.fallback },\n                { ...{ originX: origin.main.originX, originY: this.invertHorizontalPosition(origin.main.originY) }, ...{ overlayX: overlay.main.overlayX, overlayY: this.invertHorizontalPosition(overlay.main.overlayY) } },\n                { ...{ originX: origin.fallback.originX, originY: this.invertHorizontalPosition(origin.fallback.originY) }, ...{ overlayX: overlay.fallback.overlayX, overlayY: this.invertHorizontalPosition(overlay.fallback.overlayY) } }\n            ];\n        }\n    }\n\n    /** Get the origin position based on the specified tooltip placement */\n    private getOrigin(\n        initialPlacement: string,\n        alignment: string\n    ): OriginConnectedPositions {\n        // ensure placement is defined\n        const placement = initialPlacement || 'bottom';\n        let originPosition: OriginConnectionPosition;\n\n        if (placement === 'top' || placement === 'bottom') {\n            originPosition = { originX: alignment as HorizontalConnectionPos, originY: placement };\n        }\n\n        if (placement === 'left') {\n            originPosition = { originX: 'start', originY: this.getVerticalAlignment(alignment) };\n        }\n\n        if (placement === 'right') {\n            originPosition = { originX: 'end', originY: this.getVerticalAlignment(alignment) };\n        }\n\n        const { x, y } = this.invertPosition(placement, originPosition!.originX, originPosition!.originY);\n\n        return {\n            main: originPosition,\n            fallback: { originX: x, originY: y },\n        };\n    }\n\n    /** Calculate the overlay position based on the specified tooltip placement */\n    private getOverlayPosition(\n        initialPlacement: string,\n        alignment: string\n    ): OverlayConnectedPositions {\n        // ensure placement is defined\n        const placement = initialPlacement || 'top';\n        let overlayPosition: OverlayConnectionPosition;\n\n        if (placement === 'top') {\n            overlayPosition = { overlayX: alignment as HorizontalConnectionPos, overlayY: 'bottom' };\n        }\n\n        if (placement === 'bottom') {\n            overlayPosition = { overlayX: alignment as HorizontalConnectionPos, overlayY: 'top' };\n        }\n\n        if (placement === 'left') {\n            overlayPosition = { overlayX: 'end', overlayY: this.getVerticalAlignment(alignment) };\n        }\n\n        if (placement === 'right') {\n            overlayPosition = { overlayX: 'start', overlayY: this.getVerticalAlignment(alignment) };\n        }\n\n        const { x, y } = this.invertPosition(placement, overlayPosition!.overlayX, overlayPosition!.overlayY);\n\n        return {\n            main: overlayPosition!,\n            fallback: { overlayX: x, overlayY: y },\n        };\n    }\n\n    /** Convert the alignment property to a valid CDK alignment value */\n    private getVerticalAlignment(alignment: string): VerticalConnectionPos {\n        switch (alignment) {\n            case 'start':\n                return 'top';\n\n            case 'end':\n                return 'bottom';\n\n            default:\n                return alignment as VerticalConnectionPos;\n        }\n    }\n\n    /** Inverts an overlay position. */\n    private invertPosition(placement: string, x: HorizontalConnectionPos, y: VerticalConnectionPos) {\n        if (placement === 'top' || placement === 'bottom') {\n            if (y === 'top') {\n                y = 'bottom';\n            } else if (y === 'bottom') {\n                y = 'top';\n            }\n        } else {\n            if (x === 'end') {\n                x = 'start';\n            } else if (x === 'start') {\n                x = 'end';\n            }\n        }\n\n        return { x, y };\n    }\n\n    invertHorizontalPosition(y: string): 'top' | 'center' | 'bottom' {\n        return y === 'top' ? 'bottom' : 'top';\n    }\n\n    private getFallbackPosition(fallbackPlacement: string): ConnectedPosition {\n        switch (fallbackPlacement) {\n            case 'left':\n                return { originX: 'start', originY: 'center', overlayX: 'end', overlayY: 'center' };\n            case 'right':\n                return { originX: 'end', originY: 'center', overlayX: 'start', overlayY: 'center' };\n            case 'top':\n                return { originX: 'center', originY: 'top', overlayX: 'center', overlayY: 'bottom' };\n            case 'bottom':\n                return { originX: 'center', originY: 'bottom', overlayX: 'center', overlayY: 'top' };\n        }\n    }\n}\n\ninterface OriginConnectedPositions {\n    main: OriginConnectionPosition;\n    fallback: OriginConnectionPosition;\n}\n\ninterface OverlayConnectedPositions {\n    main: OverlayConnectionPosition;\n    fallback: OverlayConnectionPosition;\n}"]}