Incorporating Angular 2 Templates: Exploring how to bind keydown.arrow event to the entire div rather than just specific

I am currently working on a simple navigator component that includes buttons and a date-picker subcomponent. My goal is to be able to bind keydown.arrowleft etc. for the entire div, which has a CSS style of 100% height and width. Below is the template structure:

<div id="ck-navigator" (keydown.arrowleft)="decrementDate(); 
    $event.preventDefault()" (keydown.arrowright)="incrementDate(); 
$event.preventDefault()">
    <button (click)="decrementDate()" class="fa fa-2x fa-chevron-left">
    </button>
    <ck-date-picker [date]="date" (dateChange)="changeDate($event)">
    </ck-date-picker>
    <button (click)="incrementDate()" class="fa fa-2x fa-chevron-right"></button>
</div>

The actual code of the component is not relevant to this question. The keybindings work when I actively select a button or the date-picker beforehand. Is there a way to extend the keybinding to cover the entire div (i.e., even if I just click anywhere on the site)? I appreciate any guidance in understanding the DOM better. Thank you.

Answer №1

The issue lies in the fact that your div is not currently set to be focusable, thus it is not responding to the keybindings. To rectify this, consider adding the attribute tabindex="0" to the div element.

Answer №2

If you're looking to capture key events across the entire page, one approach is to incorporate @HostListener into your component. This allows you to handle events occurring on the whole window or page.

Let's walk through an example.

import { Component, HostListener } from '@angular/core';

[your @Component details here.....]

@HostListener("window:keydown", ['$event'])

onKeyDown(event: KeyboardEvent) {
    console.log(`You pressed ${event.key}!`);
}

Additionally, if you need to target specific elements, you can utilize ElementRef and ViewChild by importing them from angular/core. This way, you can manipulate DOM components like so:

@ViewChild('DOM_Id') element: ElementRef;

I hope this clarifies things for you. Best wishes!

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