A class to process whatever happening on the keyboard

yafitsv/views/olqv_keyboardevents.ejs

+<script>
+class KeyCodeProcessor {
+
+  static enter(what) {
+    console.group(this.name + "." + what);
+  }
+
+  static exit() {
+    console.groupEnd();
+  }
+
+  constructor (sliceViewer) {
+    KeyCodeProcessor.enter(this.constructor.name);
+    this.sliceViewer = sliceViewer;
+    KeyCodeProcessor.exit()
+  }
+
+  open() {
+    KeyCodeProcessor.enter(this.open.name);
+    document.addEventListener('keydown', this.process.bind(this), false);
+    KeyCodeProcessor.exit();
+  }
+
+  process(event) {
+    KeyCodeProcessor.enter(this.process.name);
+    let ctrlKey = event.ctrlKey;
+    let keyCode = event.keyCode;
+    console.log(event);
+    console.log(ctrlKey);
+    console.log(keyCode);
+    KeyCodeProcessor.exit();
+  }
+}
+</script>