Method webViewMessageCallback

distrho/src/DistrhoUI.cpp:243–319

#if DISTRHO_UI_USE_WEB_VIEW
void UI::PrivateData::webViewMessageCallback(void* const arg, char* const msg)
{
    UI::PrivateData* const uiData = static_cast<UI::PrivateData*>(arg);

    if (std::strncmp(msg, "setparam ", 9) == 0)
    {
        const char* const strindex = msg + 9;
        char* strvalue = nullptr;
        const ulong index = std::strtoul(strindex, &strvalue, 10);
        DISTRHO_SAFE_ASSERT_RETURN(strvalue != nullptr && strindex != strvalue,);

        float value;
        {
            const ScopedSafeLocale ssl;
            value = std::atof(strvalue);
        }
        uiData->setParamCallback(index + uiData->parameterOffset, value);
        return;
    }

    if (std::strncmp(msg, "editparam ", 10) == 0)
    {
        const char* const strindex = msg + 10;
        char* strvalue = nullptr;
        const ulong index = std::strtoul(strindex, &strvalue, 10);
        DISTRHO_SAFE_ASSERT_RETURN(strvalue != nullptr && strindex != strvalue,);

        const bool started = strvalue[0] != '0';
        uiData->editParamCallback(index + uiData->parameterOffset, started);
        return;
    }

   #if DISTRHO_PLUGIN_WANT_STATE
    if (std::strncmp(msg, "setstate ", 9) == 0)
    {
        char* const key = msg + 9;
        char* const sep = std::strchr(key, ' ');
        DISTRHO_SAFE_ASSERT_RETURN(sep != nullptr,);
        *sep = '\0';
        char* const value = sep + 1;

        uiData->setStateCallback(key, value);
        return;
    }

    if (std::strncmp(msg, "reqstatefile ", 13) == 0)
    {
        const char* const key = msg + 13;
        uiData->fileRequestCallback(key);
        return;
    }
   #endif

   #if DISTRHO_PLUGIN_WANT_MIDI_INPUT
    if (std::strncmp(msg, "sendnote ", 9) == 0)
    {
        const char* const strchannel = msg + 9;
        char* strnote = nullptr;