fuse-angular/src/app/modules/admin/apps/file-manager/details/details.component.ts

import {
    ChangeDetectionStrategy,
    ChangeDetectorRef,
    Component,
    OnDestroy,
    OnInit,
    ViewEncapsulation,
} from '@angular/core';
import { MatButtonModule } from '@angular/material/button';
import { MatIconModule } from '@angular/material/icon';
import { MatDrawerToggleResult } from '@angular/material/sidenav';
import { RouterLink } from '@angular/router';
import { FileManagerService } from 'app/modules/admin/apps/file-manager/file-manager.service';
import { Item } from 'app/modules/admin/apps/file-manager/file-manager.types';
import { FileManagerListComponent } from 'app/modules/admin/apps/file-manager/list/list.component';
import { Subject, takeUntil } from 'rxjs';

@Component({
    selector: 'file-manager-details',
    templateUrl: './details.component.html',
    encapsulation: ViewEncapsulation.None,
    changeDetection: ChangeDetectionStrategy.OnPush,
    imports: [MatButtonModule, RouterLink, MatIconModule],
})
export class FileManagerDetailsComponent implements OnInit, OnDestroy {
    item: Item;
    private _unsubscribeAll: Subject<any> = new Subject<any>();

    /**
     * Constructor
     */
    constructor(
        private _changeDetectorRef: ChangeDetectorRef,
        private _fileManagerListComponent: FileManagerListComponent,
        private _fileManagerService: FileManagerService
    ) {}

    // -----------------------------------------------------------------------------------------------------
    // @ Lifecycle hooks
    // -----------------------------------------------------------------------------------------------------

    /**
     * On init
     */
    ngOnInit(): void {
        // Open the drawer
        this._fileManagerListComponent.matDrawer.open();

        // Get the item
        this._fileManagerService.item$
            .pipe(takeUntil(this._unsubscribeAll))
            .subscribe((item: Item) => {
                // Open the drawer in case it is closed
                this._fileManagerListComponent.matDrawer.open();

                // Get the item
                this.item = item;

                // Mark for check
                this._changeDetectorRef.markForCheck();
            });
    }

    /**
     * On destroy
     */
    ngOnDestroy(): void {
        // Unsubscribe from all subscriptions
        this._unsubscribeAll.next(null);
        this._unsubscribeAll.complete();
    }

    // -----------------------------------------------------------------------------------------------------
    // @ Public methods
    // -----------------------------------------------------------------------------------------------------

    /**
     * Close the drawer
     */
    closeDrawer(): Promise<MatDrawerToggleResult> {
        return this._fileManagerListComponent.matDrawer.close();
    }

    /**
     * Track by function for ngFor loops
     *
     * @param index
     * @param item
     */
    trackByFn(index: number, item: any): any {
        return item.id || index;
    }
}