Method setFocus

src/ui/manager.cpp:688–759

}

void Manager::setFocus(Widget* widget)
{
  if ((focus_widget != widget)
      && (!(widget)
          || (!(widget->hasFlags(DISABLED))
              && !(widget->hasFlags(HIDDEN))
              && !(widget->hasFlags(DECORATIVE))
              && someParentIsFocusStop(widget)))) {
    WidgetsList widget_parents;
    Widget* common_parent = NULL;

    if (widget)
      widget->getParents(false, widget_parents);

    // Fetch the focus
    if (focus_widget) {
      WidgetsList focus_parents;
      focus_widget->getParents(true, focus_parents);

      Message* msg = new Message(kFocusLeaveMessage);

      for (Widget* parent1 : focus_parents) {
        if (widget) {
          for (Widget* parent2 : widget_parents) {
            if (parent1 == parent2) {
              common_parent = parent1;
              break;
            }
          }
          if (common_parent)
            break;
        }

        if (parent1->hasFocus()) {
          parent1->disableFlags(HAS_FOCUS);
          msg->addRecipient(parent1);
        }
      }

      enqueueMessage(msg);
    }

    // Put the focus
    focus_widget = widget;
    if (widget) {
      WidgetsList::iterator it;

      if (common_parent) {
        it = std::find(widget_parents.begin(),
                       widget_parents.end(),
                       common_parent);
        ASSERT(it != widget_parents.end());
        ++it;
      }
      else
        it = widget_parents.begin();

      Message* msg = new Message(kFocusEnterMessage);