handleEventDefault method

@protected void handleEventDefault(EventTarget eventTarget, Event event)

Called by EventTarget when default behavior of an event should occur.

In other words:

• Capturing and bubbling phases of event handling are already done when this method is invoked.
• This method is not invoked if Event.preventDefault was called by an event handler.

The default implementation handles the following events:

• InputElement clicks

Implementation

@protected
void handleEventDefault(EventTarget eventTarget, Event event) {
  switch (event.type) {
    case 'click':
      if (eventTarget is InputElement) {
        final type = eventTarget.type;
        if (type == null) {
          return;
        }
        switch (type.toLowerCase()) {
          case 'file':
            handleFileUploadInputElementClick(eventTarget, event);
            break;

          case 'reset':
            eventTarget.form?.reset();
            break;

          case 'radio':
            final name = eventTarget.name;
            final form = eventTarget.form!;
            final length = form.length!;
            for (var i = 0; i < length; i++) {
              final item = form.item(i);
              if (item is InputElement && item.name == name) {
                item.checked = false;
              }
            }
            eventTarget.checked = true;
            break;

          case 'checkbox':
            eventTarget.checked = !eventTarget.checked!;
            break;

          default:
            eventTarget.focus();
            break;
        }
      }
      break;
  }
}