/**
 * @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 { Directive, Input, Optional, ElementRef, } from '@angular/core';
import { MatDialog } from './dialog';
import { _closeDialogVia, MatDialogRef } from './dialog-ref';
/** Counter used to generate unique IDs for dialog elements. */
let dialogElementUid = 0;
/**
 * Button that will close the current dialog.
 */
export class MatDialogClose {
    constructor(
    /**
     * Reference to the containing dialog.
     * @deprecated `dialogRef` property to become private.
     * @breaking-change 13.0.0
     */
    // The dialog title directive is always used in combination with a `MatDialogRef`.
    // tslint:disable-next-line: lightweight-tokens
    dialogRef, _elementRef, _dialog) {
        this.dialogRef = dialogRef;
        this._elementRef = _elementRef;
        this._dialog = _dialog;
        /** Default to "button" to prevents accidental form submits. */
        this.type = 'button';
    }
    ngOnInit() {
        if (!this.dialogRef) {
            // When this directive is included in a dialog via TemplateRef (rather than being
            // in a Component), the DialogRef isn't available via injection because embedded
            // views cannot be given a custom injector. Instead, we look up the DialogRef by
            // ID. This must occur in `onInit`, as the ID binding for the dialog container won't
            // be resolved at constructor time.
            this.dialogRef = getClosestDialog(this._elementRef, this._dialog.openDialogs);
        }
    }
    ngOnChanges(changes) {
        const proxiedChange = changes['_matDialogClose'] || changes['_matDialogCloseResult'];
        if (proxiedChange) {
            this.dialogResult = proxiedChange.currentValue;
        }
    }
    _onButtonClick(event) {
        // Determinate the focus origin using the click event, because using the FocusMonitor will
        // result in incorrect origins. Most of the time, close buttons will be auto focused in the
        // dialog, and therefore clicking the button won't result in a focus change. This means that
        // the FocusMonitor won't detect any origin change, and will always output `program`.
        _closeDialogVia(this.dialogRef, event.screenX === 0 && event.screenY === 0 ? 'keyboard' : 'mouse', this.dialogResult);
    }
}
MatDialogClose.decorators = [
    { type: Directive, args: [{
                selector: '[mat-dialog-close], [matDialogClose]',
                exportAs: 'matDialogClose',
                host: {
                    '(click)': '_onButtonClick($event)',
                    '[attr.aria-label]': 'ariaLabel || null',
                    '[attr.type]': 'type',
                }
            },] }
];
MatDialogClose.ctorParameters = () => [
    { type: MatDialogRef, decorators: [{ type: Optional }] },
    { type: ElementRef },
    { type: MatDialog }
];
MatDialogClose.propDecorators = {
    ariaLabel: [{ type: Input, args: ['aria-label',] }],
    type: [{ type: Input }],
    dialogResult: [{ type: Input, args: ['mat-dialog-close',] }],
    _matDialogClose: [{ type: Input, args: ['matDialogClose',] }]
};
/**
 * Title of a dialog element. Stays fixed to the top of the dialog when scrolling.
 */
export class MatDialogTitle {
    constructor(
    // The dialog title directive is always used in combination with a `MatDialogRef`.
    // tslint:disable-next-line: lightweight-tokens
    _dialogRef, _elementRef, _dialog) {
        this._dialogRef = _dialogRef;
        this._elementRef = _elementRef;
        this._dialog = _dialog;
        /** Unique id for the dialog title. If none is supplied, it will be auto-generated. */
        this.id = `mat-dialog-title-${dialogElementUid++}`;
    }
    ngOnInit() {
        if (!this._dialogRef) {
            this._dialogRef = getClosestDialog(this._elementRef, this._dialog.openDialogs);
        }
        if (this._dialogRef) {
            Promise.resolve().then(() => {
                const container = this._dialogRef._containerInstance;
                if (container && !container._ariaLabelledBy) {
                    container._ariaLabelledBy = this.id;
                }
            });
        }
    }
}
MatDialogTitle.decorators = [
    { type: Directive, args: [{
                selector: '[mat-dialog-title], [matDialogTitle]',
                exportAs: 'matDialogTitle',
                host: {
                    'class': 'mat-dialog-title',
                    '[id]': 'id',
                },
            },] }
];
MatDialogTitle.ctorParameters = () => [
    { type: MatDialogRef, decorators: [{ type: Optional }] },
    { type: ElementRef },
    { type: MatDialog }
];
MatDialogTitle.propDecorators = {
    id: [{ type: Input }]
};
/**
 * Scrollable content container of a dialog.
 */
export class MatDialogContent {
}
MatDialogContent.decorators = [
    { type: Directive, args: [{
                selector: `[mat-dialog-content], mat-dialog-content, [matDialogContent]`,
                host: { 'class': 'mat-dialog-content' }
            },] }
];
/**
 * Container for the bottom action buttons in a dialog.
 * Stays fixed to the bottom when scrolling.
 */
export class MatDialogActions {
}
MatDialogActions.decorators = [
    { type: Directive, args: [{
                selector: `[mat-dialog-actions], mat-dialog-actions, [matDialogActions]`,
                host: { 'class': 'mat-dialog-actions' }
            },] }
];
/**
 * Finds the closest MatDialogRef to an element by looking at the DOM.
 * @param element Element relative to which to look for a dialog.
 * @param openDialogs References to the currently-open dialogs.
 */
function getClosestDialog(element, openDialogs) {
    let parent = element.nativeElement.parentElement;
    while (parent && !parent.classList.contains('mat-dialog-container')) {
        parent = parent.parentElement;
    }
    return parent ? openDialogs.find(dialog => dialog.id === parent.id) : null;
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {\n  Directive,\n  Input,\n  OnChanges,\n  OnInit,\n  Optional,\n  SimpleChanges,\n  ElementRef,\n} from '@angular/core';\nimport {MatDialog} from './dialog';\nimport {_closeDialogVia, MatDialogRef} from './dialog-ref';\n\n/** Counter used to generate unique IDs for dialog elements. */\nlet dialogElementUid = 0;\n\n/**\n * Button that will close the current dialog.\n */\n@Directive({\n  selector: '[mat-dialog-close], [matDialogClose]',\n  exportAs: 'matDialogClose',\n  host: {\n    '(click)': '_onButtonClick($event)',\n    '[attr.aria-label]': 'ariaLabel || null',\n    '[attr.type]': 'type',\n  }\n})\nexport class MatDialogClose implements OnInit, OnChanges {\n  /** Screenreader label for the button. */\n  @Input('aria-label') ariaLabel: string;\n\n  /** Default to \"button\" to prevents accidental form submits. */\n  @Input() type: 'submit' | 'button' | 'reset' = 'button';\n\n  /** Dialog close input. */\n  @Input('mat-dialog-close') dialogResult: any;\n\n  @Input('matDialogClose') _matDialogClose: any;\n\n  constructor(\n\n    /**\n     * Reference to the containing dialog.\n     * @deprecated `dialogRef` property to become private.\n     * @breaking-change 13.0.0\n     */\n    // The dialog title directive is always used in combination with a `MatDialogRef`.\n    // tslint:disable-next-line: lightweight-tokens\n    @Optional() public dialogRef: MatDialogRef<any>,\n    private _elementRef: ElementRef<HTMLElement>,\n    private _dialog: MatDialog) {}\n\n  ngOnInit() {\n    if (!this.dialogRef) {\n      // When this directive is included in a dialog via TemplateRef (rather than being\n      // in a Component), the DialogRef isn't available via injection because embedded\n      // views cannot be given a custom injector. Instead, we look up the DialogRef by\n      // ID. This must occur in `onInit`, as the ID binding for the dialog container won't\n      // be resolved at constructor time.\n      this.dialogRef = getClosestDialog(this._elementRef, this._dialog.openDialogs)!;\n    }\n  }\n\n  ngOnChanges(changes: SimpleChanges) {\n    const proxiedChange = changes['_matDialogClose'] || changes['_matDialogCloseResult'];\n\n    if (proxiedChange) {\n      this.dialogResult = proxiedChange.currentValue;\n    }\n  }\n\n  _onButtonClick(event: MouseEvent) {\n    // Determinate the focus origin using the click event, because using the FocusMonitor will\n    // result in incorrect origins. Most of the time, close buttons will be auto focused in the\n    // dialog, and therefore clicking the button won't result in a focus change. This means that\n    // the FocusMonitor won't detect any origin change, and will always output `program`.\n    _closeDialogVia(this.dialogRef,\n        event.screenX === 0 && event.screenY === 0 ? 'keyboard' : 'mouse', this.dialogResult);\n  }\n}\n\n/**\n * Title of a dialog element. Stays fixed to the top of the dialog when scrolling.\n */\n@Directive({\n  selector: '[mat-dialog-title], [matDialogTitle]',\n  exportAs: 'matDialogTitle',\n  host: {\n    'class': 'mat-dialog-title',\n    '[id]': 'id',\n  },\n})\nexport class MatDialogTitle implements OnInit {\n  /** Unique id for the dialog title. If none is supplied, it will be auto-generated. */\n  @Input() id: string = `mat-dialog-title-${dialogElementUid++}`;\n\n  constructor(\n      // The dialog title directive is always used in combination with a `MatDialogRef`.\n      // tslint:disable-next-line: lightweight-tokens\n      @Optional() private _dialogRef: MatDialogRef<any>,\n      private _elementRef: ElementRef<HTMLElement>,\n      private _dialog: MatDialog) {}\n\n  ngOnInit() {\n    if (!this._dialogRef) {\n      this._dialogRef = getClosestDialog(this._elementRef, this._dialog.openDialogs)!;\n    }\n\n    if (this._dialogRef) {\n      Promise.resolve().then(() => {\n        const container = this._dialogRef._containerInstance;\n\n        if (container && !container._ariaLabelledBy) {\n          container._ariaLabelledBy = this.id;\n        }\n      });\n    }\n  }\n}\n\n\n/**\n * Scrollable content container of a dialog.\n */\n@Directive({\n  selector: `[mat-dialog-content], mat-dialog-content, [matDialogContent]`,\n  host: {'class': 'mat-dialog-content'}\n})\nexport class MatDialogContent {}\n\n\n/**\n * Container for the bottom action buttons in a dialog.\n * Stays fixed to the bottom when scrolling.\n */\n@Directive({\n  selector: `[mat-dialog-actions], mat-dialog-actions, [matDialogActions]`,\n  host: {'class': 'mat-dialog-actions'}\n})\nexport class MatDialogActions {}\n\n\n/**\n * Finds the closest MatDialogRef to an element by looking at the DOM.\n * @param element Element relative to which to look for a dialog.\n * @param openDialogs References to the currently-open dialogs.\n */\nfunction getClosestDialog(element: ElementRef<HTMLElement>, openDialogs: MatDialogRef<any>[]) {\n  let parent: HTMLElement | null = element.nativeElement.parentElement;\n\n  while (parent && !parent.classList.contains('mat-dialog-container')) {\n    parent = parent.parentElement;\n  }\n\n  return parent ? openDialogs.find(dialog => dialog.id === parent!.id) : null;\n}\n"]}