Update tooltip to close on tab

Author: youda97

src/dialog/dialog.directive.ts

@@ -122,6 +122,9 @@ export class DialogDirective implements OnInit, OnDestroy, OnChanges {
 		if (event.key === "Escape") {
 			this.close();
 		}
+		if (event.target === this.dialogConfig.parentRef.nativeElement && (event.key === "Tab" || event.key === "Tab" && event.shiftKey)) {
+			this.close();
+		}
 	}
 
 	ngOnChanges() {

src/dialog/dialog.service.ts

@@ -143,7 +143,7 @@ export class DialogService {
 	 * @param {any} [evt]
 	 * @memberof DialogService
 	 */
-	close(viewContainer: ViewContainerRef, focusPreviouslyFocusedElement = true) {
+	close(viewContainer: ViewContainerRef) {
 		this.isClosed.emit(true);
 
 		if (this.dialogRef) {
@@ -155,9 +155,7 @@ export class DialogService {
 			}
 			this.dialogRef = null;
 			this.isOpen = false;
-			if (focusPreviouslyFocusedElement) {
 				elementToFocus.focus();
-			}
 
 			if (this.dialogSubscription) {
 				this.dialogSubscription.unsubscribe();

src/dialog/tooltip/tooltip.directive.ts

@@ -81,9 +81,4 @@ export class TooltipDirective extends DialogDirective {
 		this.dialogConfig.content = this.ibmTooltip;
 		this.dialogConfig.type = this.tooltipType;
 	}
-
-	close() {
-		this.dialogService.close(this.viewContainerRef, false);
-		this.expanded = false;
-	}
 }