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61381
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k.triantaf
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import {Directive, ElementRef, EventEmitter, Input, OnDestroy, OnInit, Output} from '@angular/core';
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import {fromEvent, Subscriber} from 'rxjs';
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import {delay, tap} from 'rxjs/operators';
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@Directive({
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selector: '[click-outside-or-esc]'
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})
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export class ClickOutsideOrEsc implements OnInit, OnDestroy {
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private listening: boolean;
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private subscriptions: any[] = [];
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@Input()
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public targetId = null;
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@Input()
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public escClose = true;
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@Input()
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public clickClose = true;
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@Output('clickOutside') clickOutside: EventEmitter<Object>;
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constructor(private _elRef: ElementRef) {
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this.listening = false;
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this.clickOutside = new EventEmitter();
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}
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ngOnInit() {
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if(typeof document !== 'undefined') {
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this.subscriptions.push(fromEvent(document, 'click').pipe(
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delay(1),
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tap(() => {
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this.listening = true;
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})).subscribe((event: MouseEvent) => {
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this.onGlobalClick(event);
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}));
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this.subscriptions.push(fromEvent(document, 'click').pipe(
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delay(1),
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tap(() => {
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this.listening = true;
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})).subscribe((event: KeyboardEvent) => {
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if (event.keyCode === 27 && this.escClose) {
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this.clickOutside.emit({
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target: (event.target || null),
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value: true
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});
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}
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}));
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}
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}
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ngOnDestroy() {
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if (this.subscriptions) {
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this.subscriptions.forEach((subscription: Subscriber<any>) => {
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subscription.unsubscribe();
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});
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}
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this.subscriptions = [];
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}
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onGlobalClick(event: MouseEvent) {
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if (event instanceof MouseEvent && this.listening === true) {
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let element: HTMLElement = <HTMLElement>event.target;
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while (element) {
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if(element.id === this.targetId) {
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this.clickOutside.emit({
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target: (event.target || null),
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value: false
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});
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return;
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}
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element = element.parentElement;
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}
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if(this.clickClose) {
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this.clickOutside.emit({
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target: (event.target || null),
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value: true
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});
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}
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}
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}
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}
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