Function onHtmlInputKeyDown_

packages/blockly/core/field_input.ts:601–652

* Handle key down to the editor. * * @param e Keyboard event.

(e: KeyboardEvent)

   * @param e Keyboard event.
   */
  protected onHtmlInputKeyDown_(e: KeyboardEvent) {
    if (e.key === 'Enter') {
      WidgetDiv.hideIfOwner(this);
      dropDownDiv.hideWithoutAnimation();
      // Prevent this from also being handled by the Enter keyboard shortcut,
      // which can re-show the field editor after we just dismissed it.
      e.stopPropagation();
    } else if (e.key === 'Escape') {
      this.setValue(
        this.htmlInput_!.getAttribute('data-untyped-default-value'),
        false,
      );
      WidgetDiv.hideIfOwner(this);
      dropDownDiv.hideWithoutAnimation();
    } else if (e.key === 'Tab') {
      e.preventDefault();
      const navigator = this.workspace_?.getNavigator();

      const isValidDestination = (node: IFocusableNode | null) =>
        (node instanceof FieldInput ||
          (node instanceof BlockSvg && node.isSimpleReporter())) &&
        node !== this.getSourceBlock();

      // eslint-disable-next-line @typescript-eslint/no-this-alias
      let target: IFocusableNode | null | undefined = this;
      do {
        target = e.shiftKey
          ? navigator?.getOutNode(target)
          : navigator?.getInNode(target);
      } while (target && !isValidDestination(target));
      target =
        target instanceof BlockSvg && target.isSimpleReporter()
          ? target.getFields().next().value
          : target;

      if (target instanceof FieldInput) {
        WidgetDiv.hideIfOwner(this);
        dropDownDiv.hideWithoutAnimation();
        const targetSourceBlock = target.getSourceBlock();
        if (
          target.isFullBlockField() &&
          targetSourceBlock &&
          targetSourceBlock instanceof BlockSvg
        ) {
          getFocusManager().focusNode(targetSourceBlock);
        } else {
          getFocusManager().focusNode(target);
        }
        target.showEditor();
      }
    }
  }

  /**
   * Handle a change to the editor.