Method QueryContextMenu

PathCopyCopy/src/PathCopyCopyContextMenuExt.cpp:297–526

IContextMenu::QueryContextMenu Invoked by the shell to populate a contextual menu. We need to use this opportunity to add our menu items. @param p_hMenu Handle to the contextual menu to populate. @param p_Index Index in the menu where to add items. @param p_FirstCmdId First available command ID for our commands. @param p_LastCmdId Last available command ID for our commands. @param p_Flags Flags

//         used, plus one; otherwise, an error code.
//
[[gsl::suppress(c.128)]]
STDMETHODIMP CPathCopyCopyContextMenuExt::QueryContextMenu(
    HMENU p_hMenu,
    UINT p_Index,
    UINT p_FirstCmdId,
    UINT p_LastCmdId,
    UINT p_Flags)
{
    HRESULT hRes = S_OK;

    try {
        if (p_hMenu == nullptr) {
            hRes = E_INVALIDARG;
        } else {
            // Make sure this menu hasn't been modified by another instance.
            CPathCopyCopyContextMenuExt* pOtherInstance = nullptr;
            {
                std::lock_guard<std::mutex> lock(s_ExtToMenusLock);
                auto it = std::find_if(s_vExtToMenus.begin(), s_vExtToMenus.end(), [&](const auto& extToMenu) {
                    return extToMenu.second == p_hMenu;
                });
                if (it != s_vExtToMenus.end()) {
                    pOtherInstance = it->first;
                }
            }

            // Do not add items if the default action is chosen, if we have no files,
            // if menu has been modified by another instance or if this is a menu for
            // a shortcut (.lnk) file and we want to copy true .lnk paths (in such a
            // case, another instance is coming after us to do the job).
            bool skipBecauseOfLnk = false;
            if ((p_Flags & CMF_VERBSONLY) != 0) {
                skipBecauseOfLnk = GetSettings().GetTrueLnkPaths();
            }
            if (m_vFiles.empty() || (p_Flags & CMF_DEFAULTONLY) != 0 || pOtherInstance != nullptr || skipBecauseOfLnk) {
                hRes = E_FAIL;
            } else {
                UINT cmdId = p_FirstCmdId;
                UINT position = p_Index;

                // Fetch reference to settings.
                PCC::Settings& rSettings = GetSettings();

                // Get all plugins in default order. Do not include temp pipeline plugins.
                m_vspPluginsInDefaultOrder = PCC::PluginsRegistry::GetPluginsInDefaultOrder(
                    &rSettings, &rSettings, PCC::PipelinePluginsOptions::FetchPipelinePlugins);

                // Get set of all plugins from the above vector.
                m_sspAllPlugins.insert(m_vspPluginsInDefaultOrder.cbegin(), m_vspPluginsInDefaultOrder.cend());

                // Create plugin provider object wrapping our set of all plugins.
                m_spPluginProvider = std::make_shared<PCC::AllPluginsProvider>(m_sspAllPlugins);

                // Provide each plugin with settings object and plugin provider, since some require this to work.
                for (const PCC::PluginSP& spPlugin : m_sspAllPlugins) {
                    spPlugin->SetSettings(&rSettings);
                    spPlugin->SetPluginProvider(m_spPluginProvider.get());
                }