Function createButton

source/MRViewer/MRUITestEngine.cpp:194–234

template std::optional<std::string> detail::createValueLow( std::string_view name, std::optional<BoundedValue<std::string>> value, bool consumeValueOverride, const EntryAttributes& attrs );

bool createButton( std::string_view name, const EntryAttributes& attrs )
{
    #if MR_ENABLE_UI_TEST_ENGINE
    checkForNewFrame();

    auto& map = state.stack.back()->elems;
    auto iter = map.find( name ); // I wish I could use `std::try_emplace` here directly...
    if ( iter == map.end() )
    {
        iter = map.try_emplace( std::string( name ) ).first;
    }
    else
    {
        // If you see this assert, you likely have duplicate button names.
        // If you truly have several buttons with the same name in one place, add unique `##...` suffixes to them.
        // If the buttons are in different parts of the application and shouldn't collide,
        // use `UI::TestEngine::pushTree("...")` and `popTree()` to group them into named groups, with unique names in each group.
        assert( !iter->second.visitedOnThisFrame && "Registering the same entry more than once in a single frame!" );
    }

    ButtonEntry* button = std::get_if<ButtonEntry>( &iter->second.value );
    if ( !button )
        button = &iter->second.value.emplace<ButtonEntry>();

    button->disabledReason = effectiveDisabledReason( attrs );

    iter->second.visitedOnThisFrame = true;

    // commented, because it is already logged in MRPythonUiInteraction.cpp/pressButton
    // if ( button->simulateClick )
    //    spdlog::info( "Button {} click simulation", name );

    const bool clicked = std::exchange( button->simulateClick, false );
    if ( clicked )
        state.frameTriggered = true;
    return clicked;
    #else
    (void)attrs;
    return false;
    #endif
}

std::optional<std::string> createValue( std::string_view name, std::string value, bool consumeValueOverride, std::optional<std::vector<std::string>> allowedValues, const EntryAttributes& attrs )
{