overlay-position.ts

/**
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
 */

import { ConnectedOverlayPositionChange, ConnectionPositionPair } from '@angular/cdk/overlay';

export const POSITION_MAP = {
  top: new ConnectionPositionPair({ originX: 'center', originY: 'top' }, { overlayX: 'center', overlayY: 'bottom' }),
  topCenter: new ConnectionPositionPair(
    { originX: 'center', originY: 'top' },
    { overlayX: 'center', overlayY: 'bottom' }
  ),
  topLeft: new ConnectionPositionPair({ originX: 'start', originY: 'top' }, { overlayX: 'start', overlayY: 'bottom' }),
  topRight: new ConnectionPositionPair({ originX: 'end', originY: 'top' }, { overlayX: 'end', overlayY: 'bottom' }),
  right: new ConnectionPositionPair({ originX: 'end', originY: 'center' }, { overlayX: 'start', overlayY: 'center' }),
  rightTop: new ConnectionPositionPair({ originX: 'end', originY: 'top' }, { overlayX: 'start', overlayY: 'top' }),
  rightBottom: new ConnectionPositionPair(
    { originX: 'end', originY: 'bottom' },
    { overlayX: 'start', overlayY: 'bottom' }
  ),
  bottom: new ConnectionPositionPair({ originX: 'center', originY: 'bottom' }, { overlayX: 'center', overlayY: 'top' }),
  bottomCenter: new ConnectionPositionPair(
    { originX: 'center', originY: 'bottom' },
    { overlayX: 'center', overlayY: 'top' }
  ),
  bottomLeft: new ConnectionPositionPair(
    { originX: 'start', originY: 'bottom' },
    { overlayX: 'start', overlayY: 'top' }
  ),
  bottomRight: new ConnectionPositionPair({ originX: 'end', originY: 'bottom' }, { overlayX: 'end', overlayY: 'top' }),
  left: new ConnectionPositionPair({ originX: 'start', originY: 'center' }, { overlayX: 'end', overlayY: 'center' }),
  leftTop: new ConnectionPositionPair({ originX: 'start', originY: 'top' }, { overlayX: 'end', overlayY: 'top' }),
  leftBottom: new ConnectionPositionPair(
    { originX: 'start', originY: 'bottom' },
    { overlayX: 'end', overlayY: 'bottom' }
  )
};
export type POSITION_TYPE = keyof typeof POSITION_MAP;
export type POSITION_TYPE_HORIZONTAL = Extract<
  POSITION_TYPE,
  'bottomLeft' | 'bottomCenter' | 'bottomRight' | 'topLeft' | 'topCenter' | 'topRight'
>;

export const DEFAULT_TOOLTIP_POSITIONS = [POSITION_MAP.top, POSITION_MAP.right, POSITION_MAP.bottom, POSITION_MAP.left];

export const DEFAULT_CASCADER_POSITIONS = [
  POSITION_MAP.bottomLeft,
  POSITION_MAP.bottomRight,
  POSITION_MAP.topLeft,
  POSITION_MAP.topRight,
  POSITION_MAP.topCenter,
  POSITION_MAP.bottomCenter
];

export const DEFAULT_MENTION_TOP_POSITIONS = [
  new ConnectionPositionPair({ originX: 'start', originY: 'bottom' }, { overlayX: 'start', overlayY: 'bottom' }),
  new ConnectionPositionPair({ originX: 'start', originY: 'bottom' }, { overlayX: 'end', overlayY: 'bottom' })
];

export const DEFAULT_MENTION_BOTTOM_POSITIONS = [
  POSITION_MAP.bottomLeft,
  new ConnectionPositionPair({ originX: 'start', originY: 'bottom' }, { overlayX: 'end', overlayY: 'top' })
];

export function getPlacementName(position: ConnectedOverlayPositionChange): string | undefined {
  for (const placement in POSITION_MAP) {
    if (
      position.connectionPair.originX === POSITION_MAP[placement as POSITION_TYPE].originX &&
      position.connectionPair.originY === POSITION_MAP[placement as POSITION_TYPE].originY &&
      position.connectionPair.overlayX === POSITION_MAP[placement as POSITION_TYPE].overlayX &&
      position.connectionPair.overlayY === POSITION_MAP[placement as POSITION_TYPE].overlayY
    ) {
      return placement;
    }
  }
  return undefined;
}