Detect a click outside of an element - ionic-framework

Question

There is some components in Ionic that do not provide an event that is emitted when focus is lost.
For example ion-input provides ionBlur. On the other hand there is other elements like ion-content where I need to detect an outside click, but without knowing which event to use.
Is there a way to achieve that without being limited to the proposed events in the documentation?

Answer 1

I found this article that shows a way to use a custom directive to detect an outside click:
import {Directive, ElementRef, Output, EventEmitter, HostListener} from '#angular/core';
#Directive({
selector: '[clickOutside]'
})
export class ClickOutsideDirective {
constructor(private _elementRef : ElementRef) {
}
#Output()
public clickOutside = new EventEmitter();
#HostListener('document:click', ['$event.target'])
public onClick(targetElement) {
const clickedInside = this._elementRef.nativeElement.contains(targetElement);
if (!clickedInside) {
this.clickOutside.emit(null);
}
}
}
The directive can then be used this way, after declaring it in the concerned module:
<!-- HTML Template -->
<ion-content (clickOutside)="handleOutsideClick()"><!-- ... --></ion-content>
<!-- Typescript code -->
handleOutsideClick() {
//Handle My outside Click
}

Answer 2

Yeah, It's been 7 months since asked.
Stucked with the same issue; this solved the issue
TS
#ViewChild('content') content: ElementRef
#HostListener('document:click', ['$event'])
andClickEvent(event) {
if (!this.content.nativeElement.contains(event.target)) {
if (!this.navCtrl.isTransitioning() && this.navCtrl.getActive()) {
this.close()
}
}
}
HTML
<ion-content #content>