imgui-stl

#include "imgui-STL.h"
#include <imgui.h>

namespace ImGui
{

// well, at least it is possible..
static auto vector_getter = [](void* vec, int idx, const char** out_text)
{
    auto& vector = *reinterpret_cast<std::vector<std::string>*>(vec);
    if (idx < 0 || idx >= static_cast<int>(vector.size())) { return false; }
    *out_text = vector.at(idx).c_str();
    return true;
};

bool Combo(const char* label, int* currIndex, std::vector<std::string>& values)
{
    if (values.empty()) { return false; }
    return Combo(label, currIndex, vector_getter, reinterpret_cast<void*>(&values), values.size());
}

bool ListBox(const char* label, int* currIndex, std::vector<std::string>& values)
{
    if (values.empty()) { return false; }
    return ListBox(label, currIndex, vector_getter, reinterpret_cast<void*>(&values), values.size());
}

bool InputText(const char* label, std::string& str, size_t maxInputSize,
    ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data)
{
    if (str.size() > maxInputSize) { // too large for editing
        ImGui::Text(str.c_str());
        return false;
    }

    std::string buffer(str);
    buffer.resize(maxInputSize);
    bool changed = ImGui::InputText(label, &buffer[0], maxInputSize, flags, callback, user_data);
    // using string as char array
    if (changed) {
        auto i = buffer.find_first_of('\0');
        str = buffer.substr(0u, i);
    }
    return changed;
}

} // end of namespace ImGui