/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {ViewContainerRef} from '@angular/core';
import {Direction} from '@angular/cdk/bidi';

/** Valid ARIA roles for a dialog element. */
export type DialogRole = 'dialog' | 'alertdialog';

/** Possible overrides for a dialog's position. */
export interface DialogPosition {
  /** Override for the dialog's top position. */
  top?: string;

  /** Override for the dialog's bottom position. */
  bottom?: string;

  /** Override for the dialog's left position. */
  left?: string;

  /** Override for the dialog's right position. */
  right?: string;
}

/**
 * Configuration for opening a modal dialog with the MatDialog service.
 */
export class MatDialogConfig<D = any> {

  /**
   * Where the attached component should live in Angular's *logical* component tree.
   * This affects what is available for injection and the change detection order for the
   * component instantiated inside of the dialog. This does not affect where the dialog
   * content will be rendered.
   */
  viewContainerRef?: ViewContainerRef;

  /** ID for the dialog. If omitted, a unique one will be generated. */
  id?: string;

  /** The ARIA role of the dialog element. */
  role?: DialogRole = 'dialog';

  /** Custom class for the overlay pane. */
  panelClass?: string | string[] = '';

  /** Whether the dialog has a backdrop. */
  hasBackdrop?: boolean = true;

  /** Custom class for the backdrop, */
  backdropClass?: string = '';

  /** Whether the user can use escape or clicking outside to close a modal. */
  disableClose?: boolean = false;

  /** Width of the dialog. */
  width?: string = '';

  /** Height of the dialog. */
  height?: string = '';

  /** Min-width of the dialog. If a number is provided, pixel units are assumed. */
  minWidth?: number | string;

  /** Min-height of the dialog. If a number is provided, pixel units are assumed. */
  minHeight?: number | string;

  /** Max-width of the dialog. If a number is provided, pixel units are assumed. Defaults to 80vw */
  maxWidth?: number | string = '80vw';

  /** Max-height of the dialog. If a number is provided, pixel units are assumed. */
  maxHeight?: number | string;

  /** Position overrides. */
  position?: DialogPosition;

  /** Data being injected into the child component. */
  data?: D | null = null;

  /** Layout direction for the dialog's content. */
  direction?: Direction = 'ltr';

  /** ID of the element that describes the dialog.  */
  ariaDescribedBy?: string | null = null;

  /** Aria label to assign to the dialog element */
  ariaLabel?: string | null = null;

  /** Whether the dialog should focus the first focusable element on open. */
  autoFocus?: boolean = true;

  // TODO(jelbourn): add configuration for lifecycle hooks, ARIA labelling.
}