⚡ enhance keyboard navigation with answers

src/app/pages/answers/answers.component.html

@@ -14,9 +14,11 @@
                 type="text"
                 class="answer"
                 [(ngModel)]="answer.text"
+                (keyup.enter)="addAnswer()"
+                (keyup)="navigateOrDelete($event,i)"
                 placeholder="réponse"
             >
-            <button (click)="config.answers.splice(i,1)">X</button>
+            <button class="btn btn--alert" (click)="config.answers.splice(i,1)">X</button>
         </li>
     </ol>
 

src/app/pages/answers/answers.component.ts

@@ -1,4 +1,4 @@
-import {ChangeDetectorRef, Component, Inject, OnInit} from '@angular/core';
+import {AfterViewInit, ChangeDetectorRef, Component, Inject, OnInit} from '@angular/core';
 import {BaseComponent} from '../base-page/base.component';
 import {ConfigService} from '../../config.service';
 
@@ -9,7 +9,7 @@ import {DOCUMENT} from '@angular/common';
     templateUrl: './answers.component.html',
     styleUrls: ['./answers.component.scss']
 })
-export class AnswersComponent extends BaseComponent implements OnInit {
+export class AnswersComponent extends BaseComponent implements OnInit, AfterViewInit {
 
     private answerList = [];
 
@@ -24,6 +24,10 @@ export class AnswersComponent extends BaseComponent implements OnInit {
     ngOnInit() {
     }
 
+    ngAfterViewInit() {
+        this.focusOnAnswer(0)
+    }
+
     trackFunction(index: number, item: any): number {
         return item.id;
     }
@@ -35,19 +39,30 @@ export class AnswersComponent extends BaseComponent implements OnInit {
                 text: ''
             });
         this.cd.detectChanges(); // to refresh the view before focusing on the new input
+        this.focusOnAnswer(this.config.answers.length - 1)
+    }
+
+    focusOnAnswer(i) {
         const AnswersDomToFocus = this.document.querySelectorAll('.answers .answer');
-        const dom = AnswersDomToFocus[AnswersDomToFocus.length - 1];
+        const dom = AnswersDomToFocus[i];
         if (dom.focus) {
             dom.focus();
         }
+        if (dom.select) {
+            dom.select();
+        }
     }
 
-    // add a new answer on the press of ENTER in an input
-    addWhenEnterKey(event) {
+    navigateOrDelete(event: KeyboardEvent, i) {
         console.log('event', event);
-        if (event.keyCode === 13) {
-            this.addAnswer();
+        if (event.ctrlKey && event.key == "d") {
+            this.config.answers.splice(i, 1)
+        }
+        if (event.key == "ArrowUp" && i > 0) {
+            this.focusOnAnswer(i - 1);
+        }
+        if (event.key == "ArrowDown" && i < this.config.answers.length) {
+            this.focusOnAnswer(i + 1);
         }
-        return;
     }
 }