Method onProcessMessage

src/ui/menu.cpp:365–661

}

bool MenuBox::onProcessMessage(Message* msg)
{
  Menu* menu = MenuBox::getMenu();

  switch (msg->type()) {

    case kMouseMoveMessage:
      if (!get_base(this)->was_clicked)
        break;

      // Fall through

    case kMouseDownMessage:
      if (menu) {
        if (get_base(this)->is_processing)
          break;

        gfx::Point mousePos = static_cast<MouseMessage*>(msg)->position();

        // Here we catch the filtered messages (menu-bar or the
        // popuped menu-box) to detect if the user press outside of
        // the widget
        if (msg->type() == kMouseDownMessage && m_base != NULL) {
          Widget* picked = manager()->pick(mousePos);

          // If one of these conditions are accomplished we have to
          // close all menus (back to menu-bar or close the popuped
          // menubox), this is the place where we control if...
          if (picked == NULL ||         // If the button was clicked nowhere
              picked == this ||         // If the button was clicked in this menubox
              // The picked widget isn't from the same tree of menus
              (get_base_menubox(picked) != this ||
               (this->type() == kMenuBarWidget &&
                picked->type() == kMenuWidget))) {

            // The user click outside all the menu-box/menu-items, close all
            menu->closeAll();
            return true;
          }
        }

        // Get the widget below the mouse cursor
        Widget* picked = menu->pick(mousePos);
        if (picked) {
          if ((picked->type() == kMenuItemWidget) &&
              !(picked->hasFlags(DISABLED))) {
            MenuItem* pickedItem = static_cast<MenuItem*>(picked);

            // If the picked menu-item is not highlighted...
            if (!pickedItem->isHighlighted()) {
              // In menu-bar always open the submenu, in other popup-menus
              // open the submenu only if the user does click
              bool open_submenu =
                (this->type() == kMenuBarWidget) ||
                (msg->type() == kMouseDownMessage);

              menu->highlightItem(pickedItem, false, open_submenu, false);
            }