Adding focus to the input after the reset button is clicked

Author: Andrea-Guevara

src/app/shared/form/vocabulary-treeview/vocabulary-treeview.component.html

@@ -2,7 +2,7 @@
 <div class="treeview-header row mb-1">
   <div class="col-12">
     <div class="input-group">
-      <input type="text" class="form-control" [(ngModel)]="searchText" (keyup.enter)="search()"
+      <input #searchInput type="text" class="form-control" [(ngModel)]="searchText" (keyup.enter)="search()"
              [attr.aria-label]="'vocabulary-treeview.search.form.search-placeholder' | translate"
              [placeholder]="'vocabulary-treeview.search.form.search-placeholder' | translate">
       <div class="input-group-append" id="button-addon4">

src/app/shared/form/vocabulary-treeview/vocabulary-treeview.component.ts

@@ -1,5 +1,5 @@
 import { FlatTreeControl } from '@angular/cdk/tree';
-import { Component, EventEmitter, Input, OnDestroy, OnInit, Output, OnChanges, SimpleChanges } from '@angular/core';
+import { Component, ElementRef, EventEmitter, Input, OnDestroy, OnInit, Output, OnChanges, SimpleChanges, ViewChild } from '@angular/core';
 
 import { Observable, Subscription } from 'rxjs';
 import { Store } from '@ngrx/store';
@@ -29,6 +29,11 @@ import { AlertType } from '../../alert/alert-type';
 })
 export class VocabularyTreeviewComponent implements OnDestroy, OnInit, OnChanges {
 
+  /**
+   * Implemented to manage focus on input
+   */
+  @ViewChild('searchInput') searchInput: ElementRef;
+
   /**
    * The {@link VocabularyOptions} object
    */
@@ -294,6 +299,7 @@ export class VocabularyTreeviewComponent implements OnDestroy, OnInit, OnChanges
       this.storedNodeMap = new Map<string, TreeviewFlatNode>();
       this.vocabularyTreeviewService.restoreNodes();
     }
+    this.searchInput.nativeElement.focus();
   }
 
   add() {