Method extensionCanDropObject

src/Gui/ViewProviderGroupExtension.cpp:129–151

}

bool ViewProviderGroupExtension::extensionCanDropObject(App::DocumentObject* obj) const
{
#ifdef FC_DEBUG
    Base::Console().log("Check ViewProviderGroupExtension\n");
#endif

    auto extobj = getExtendedViewProvider()->getObject();
    auto group = extobj->getExtensionByType<App::GroupExtension>();

    // we cannot drop thing of this group into it again if it does not allow reorder
    if (group->hasObject(obj) && !getExtendedViewProvider()->acceptReorderingObjects()) {
        return false;
    }

    // Check for possible cyclic dependencies if we allowed to drop the object
    const auto& list = obj->getOutList();
    if (std::ranges::find(list, extobj) != list.end()) {
        Base::Console().warning("Do not add cyclic dependency to %s\n", extobj->Label.getValue());
        return false;
    }

    return group->allowObject(obj);
}

void ViewProviderGroupExtension::extensionDropObject(App::DocumentObject* obj)
{