menus.cpp

// SPDX-FileCopyrightText: Copyright (C) 2013 swift Project Community / Contributors
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
 
 
#include "menus.h"
 
#include <algorithm>
#include <cassert>
#include <string>
#include <type_traits>
 
namespace XSwiftBus
{
    template <typename T>
    void *voidptr_cast(T i)
    {
        static_assert(std::is_integral_v<T>, "voidptr_cast expects an integer");
        using intptr_type = std::conditional_t<std::is_signed_v<T>, intptr_t, uintptr_t>;
        return reinterpret_cast<void *>(static_cast<intptr_type>(i));
    }
 
    template <typename T>
    T intptr_cast(void *p)
    {
        static_assert(std::is_integral<T>::value, "voidptr_cast returns an integer");
        using intptr_type = std::conditional_t<std::is_signed_v<T>, intptr_t, uintptr_t>;
        return static_cast<T>(reinterpret_cast<intptr_type>(p));
    }
 
    CMenu::CMenu(XPLMMenuID id, bool isMainMenu, std::unique_ptr<ItemList> items)
        : m_data(std::make_shared<Data>(id, isMainMenu, std::move(items)))
    {}
 
    CMenu::Data::~Data()
    {
        if (!isMainMenu) { XPLMDestroyMenu(id); }
    }
 
    CMenu CMenu::mainMenu() { return { XPLMFindPluginsMenu(), true, nullptr }; }
 
    CMenuItem CMenu::item(const std::string &name, std::function<void()> callback)
    {
        assert(!name.empty());
        m_data->items->emplace_back(CMenuItem { m_data->id, 0, false, [callback](bool) { callback(); } });
        auto &menuItem = m_data->items->back();
        menuItem.setIndex(XPLMAppendMenuItem(m_data->id, name.c_str(), &menuItem, false));
        return menuItem;
    }
 
    CMenuItem CMenu::checkableItem(const std::string &name, bool checked, std::function<void(bool)> callback)
    {
        assert(!name.empty());
        m_data->items->emplace_back(CMenuItem { m_data->id, 0, true, callback });
        auto &menuItem = m_data->items->back();
        menuItem.setIndex(XPLMAppendMenuItem(m_data->id, name.c_str(), &menuItem, false));
        menuItem.setChecked(checked);
        return menuItem;
    }
 
    void CMenu::removeItem(const CMenuItem &item)
    {
        auto it = std::find_if(m_data->items->begin(), m_data->items->end(),
                               [=](const auto &i) { return i.m_data->index == item.m_data->index; });
 
        XPLMRemoveMenuItem(m_data->id, it->m_data->index);
        it = m_data->items->erase(it);
 
        // Decrement the index of all below menu items
        while (it != m_data->items->end())
        {
            it->m_data->index--;
            ++it;
        }
    }
 
    void CMenu::sep() { XPLMAppendMenuSeparator(m_data->id); }
 
    CMenu CMenu::subMenu(const std::string &name)
    {
        assert(!name.empty());
        // auto items = std::make_unique<ItemList>();
        auto items = std::make_unique<ItemList>();
        auto itemsVoidPtr = static_cast<void *>(&*items);
        return { XPLMCreateMenu(name.c_str(), m_data->id, XPLMAppendMenuItem(m_data->id, name.c_str(), nullptr, false),
                                handler, itemsVoidPtr),
                 false, std::move(items) };
    }
 
    // cppcheck-suppress constParameter
    void CMenu::handler(void *menuRef, void *itemRef)
    {
        if (menuRef && itemRef)
        {
            CMenuItem *menuItem = static_cast<CMenuItem *>(itemRef);
            menuItem->m_data->callback(menuItem->getChecked());
        }
    }
 
    CMenuItem::CMenuItem(XPLMMenuID parent, int item, bool checkable, std::function<void(bool)> callback)
        : m_data(std::make_shared<Data>(parent, item, checkable, callback))
    {}
 
    bool CMenuItem::getChecked() const
    {
        XPLMMenuCheck check = xplm_Menu_NoCheck;
        XPLMCheckMenuItemState(m_data->parent, m_data->index, &check);
        return check == xplm_Menu_Checked;
    }
 
    void CMenuItem::setChecked(bool checked)
    {
        XPLMCheckMenuItem(m_data->parent, m_data->index, checked ? xplm_Menu_Checked : xplm_Menu_Unchecked);
    }
 
    void CMenuItem::setEnabled(bool enabled) { XPLMEnableMenuItem(m_data->parent, m_data->index, enabled); }
 
} // namespace XSwiftBus