src/main.cpp

#if WIN32
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#undef min
#undef max
#undef MessageBox
#endif
#if defined(__APPLE__)
#include <mach-o/dyld.h>
#endif
#include <imgui.h>
#include <imgui_internal.h>
#include <misc/cpp/imgui_stdlib.h>
#include <IconsFontAwesome6.h>
//#include <misc/fonts/IconsMaterialDesign.h>
#include <backends/imgui_impl_glfw.h>
#include <backends/imgui_impl_opengl3.h>
#include <iostream>
#include <fstream>
#include <string>
#if defined(IMGUI_IMPL_OPENGL_ES2)
#include <GLES2/gl2.h>
#endif
#include <GLFW/glfw3.h> // Will drag system OpenGL headers
#include <nfd.h>

#include "glfw_cursor.h"
#include "node_standard.h"
#include "cppgen.h"
#include "utils.h"
#include "ui_new_field.h"
#include "ui_message_box.h"
#include "ui_error_box.h"
#include "ui_class_wizard.h"
#include "ui_table_cols.h"
#include "ui_about_dlg.h"
#include "ui_binding.h"
#include "ui_combo_dlg.h"
#include "ui_horiz_layout.h"
#include "ui_input_name.h"
#include "ui_settings_dlg.h"
#include "ui_explorer.h"

#include "SimpleLayout.h"

#include "ImGuiColorTextEdit/TextEditor.h"
#include "nlohmann_json/json.hpp"
#include "MD5/quickdigest5.h"
#include "Constant.h"
#include "global.h"

using json = nlohmann::json;

//must come last
#define STB_IMAGE_IMPLEMENTATION
#include <stb_image.h>

#include <d3d11.h>

//#pragma comment(lib, "E:\\huggingface\\ColorTextEditorV2\\build\\bin\\opencv_core4120.lib")
//#pragma comment(lib, "E:\\huggingface\\ColorTextEditorV2\\build\\bin\\opencv_highgui4120.lib")

std::filesystem::path g_currPath;
HINSTANCE   g_wechatocr_dll = NULL;
typedef const char* (_cdecl* FunctionPtr) (const char* pth_img);
FunctionPtr rec;

std::pair<std::filesystem::path, std::filesystem::path> get_img_json_pth(const std::string& m5) {
#ifdef _DEBUG
    // 这是工作目录
    auto pth_img = g_currPath.parent_path().parent_path() / std::filesystem::path("data/img") / std::format("{}.txt", m5);
    auto pth_json = g_currPath.parent_path().parent_path() / std::filesystem::path("data/json") / std::format("{}.json", m5);
#else
    // 这是工作目录
    auto pth_img = g_currPath / std::filesystem::path("data/img") / std::format("{}.txt", m5); // .parent_path().parent_path()
    auto pth_json = g_currPath / std::filesystem::path("data/json") / std::format("{}.json", m5); // .parent_path().parent_path()
    //// 这是可执行文件所在目录 
    //auto pth_img = g_currPath / std::filesystem::path("data/img") / std::format("{}.txt", m5);
    //auto pth_json = g_currPath / std::filesystem::path("data/json") / std::format("{}.json", m5);
#endif // DEBUG

    pth_img = pth_img.lexically_normal();
    pth_json = pth_json.lexically_normal();

    std::pair<std::filesystem::path, std::filesystem::path> pth_pair{ pth_img, pth_json };

	return pth_pair;
}


std::string readFileToString(const std::string& filePath) {
    std::ifstream file(filePath, std::ios::binary);
    if (!file) return "";
    std::ostringstream buffer;
    buffer << file.rdbuf(); // 将文件流缓冲区内容写入字符串流
    return buffer.str();
}

static void glfw_error_callback(int error, const char* description)
{
    std::cerr << "Glfw Error: " << description;
}

const float TB_SIZE = 40;
const float TAB_SIZE = 25; //todo examine
const std::string UNTITLED = "Untitled";
const std::string DEFAULT_STYLE = "Dark";
const std::string DEFAULT_UNIT = "px";
const char* INI_FILE_NAME = "imgui.ini";

struct File
{
    std::string fname;
    CppGen codeGen;
    std::unique_ptr<TopWindow> rootNode;
    bool modified = false;
    fs::file_time_type time[2];
    std::string styleName;
    std::string unit;
};

enum ProgramState { Run, Init, Shutdown };
ProgramState programState;
std::string rootPath;
std::string initErrors, showError;
std::string uiFontName = "Roboto-Regular.ttf";
std::string pgFontName = "Roboto-Regular.ttf";
std::string pgbFontName = "Roboto-Bold.ttf";
float uiFontSize = 19;
float pgFontSize = 20;
UIContext ctx;
std::unique_ptr<Widget> newNode;
std::vector<File> fileTabs;
int activeTab = -1;
std::vector<std::pair<std::string, std::string>> styleNames; //name, path
std::string styleName;
bool reloadStyle = true;
GLFWwindow* window = nullptr;
int addInputCharacter = 0;
std::string lastPropName;
std::string activeButton = "";
std::vector<std::unique_ptr<Widget>> clipboard;
GLFWcursor* curCross = nullptr;
GLFWcursor* curWait = nullptr;
float pgHeight = 0, pgeHeight = 0;
ImRad::IOUserData ioUserData;

struct TB_Button
{
    std::string label;
    std::string name;
};
std::vector<std::pair<std::string, std::vector<TB_Button>>> tbButtons{
    { "Standard", {
        { ICON_FA_ARROW_POINTER, "" },
        { ICON_FA_FONT, "Text" },
        { ICON_FA_AUDIO_DESCRIPTION, "Selectable" },
        { ICON_FA_CIRCLE_PLAY, "Button" }, //ICON_FA_SQUARE_PLUS
        { "[a_]", "Input" }, //ICON_FA_CLOSED_CAPTIONING
        { ICON_FA_SQUARE_CHECK, "CheckBox" },
        { ICON_FA_CIRCLE_DOT, "RadioButton" },
        { ICON_FA_SQUARE_CARET_DOWN, "Combo" },
        { ICON_FA_SLIDERS, "Slider" },
        { ICON_FA_CIRCLE_HALF_STROKE, "ColorEdit" },
        { ICON_FA_BATTERY_HALF, "ProgressBar" },
        { ICON_FA_IMAGE, "Image" },
        { ICON_FA_LEFT_RIGHT, "Spacer" },
        { ICON_FA_MINUS, "Separator" },
        { ICON_FA_EXPAND, "CustomWidget" },
    }},
    { "Containers", {
        { ICON_FA_SQUARE_FULL, "Child" },
        { ICON_FA_TABLE_CELLS_LARGE, "Table" },
        { ICON_FA_ARROW_DOWN_WIDE_SHORT, "CollapsingHeader" },
        { ICON_FA_FOLDER_CLOSED, "TabBar" },
        { ICON_FA_SITEMAP, "TreeNode" },
        { ICON_FA_TABLE_COLUMNS, "Splitter" }, //ICON_FA_ARROWS_LEFT_RIGHT_TO_LINE
        //{ ICON_FA_CLAPPERBOARD /*ELLIPSIS*/, "MenuBar" },
        { ICON_FA_TABLE, "DockSpace" },
        { ICON_FA_MESSAGE /*RECEIPT*/, "ContextMenu" },
    }},
};

//CancelShutdown identifier is used in winuser.h
void DoCancelShutdown()
{
    if (programState != Shutdown)
        return;

    glfwSetWindowShouldClose(window, false);
    programState = Run;
    ImGui::GetIO().IniFilename = INI_FILE_NAME;
}

void DoReloadFile()
{
    if (activeTab < 0)
        return;
    auto& tab = fileTabs[activeTab];
    if (tab.fname == "" || !fs::is_regular_file(u8path(tab.fname)))
        return;

    std::map<std::string, std::string> params;
    std::string error;
    tab.rootNode = tab.codeGen.Import(tab.fname, params, error);
    auto pit = params.find("style");
    tab.styleName = pit == params.end() ? DEFAULT_STYLE : pit->second;
    pit = params.find("unit");
    tab.unit = pit == params.end() ? DEFAULT_UNIT : pit->second;
    bool styleFound = stx::count_if(styleNames, [&](const auto& st) {
        return st.first == tab.styleName;
        });
    if (!styleFound) {
        error = "Unknown style \"" + tab.styleName + "\" used\n" + error;
        tab.styleName = DEFAULT_STYLE;
    }
    tab.modified = false;
    ctx.mode = UIContext::NormalSelection;
    ctx.selected = { tab.rootNode.get() };

    if (error != "" && programState != Shutdown)
    {
        errorBox.title = "Reload";
        errorBox.message = "Errors occured";
        errorBox.error = error;
        errorBox.OpenPopup();
    }
}

void ReloadFile()
{
    if (activeTab < 0)
        return;
    auto& tab = fileTabs[activeTab];
    if (tab.fname == "" || !fs::is_regular_file(u8path(tab.fname)))
        return;
    auto time1 = fs::last_write_time(u8path(tab.fname));
    std::error_code err;
    auto time2 = fs::last_write_time(u8path(tab.codeGen.AltFName(tab.fname)), err);
    if (time1 == tab.time[0] && time2 == tab.time[1])
        return;
    tab.time[0] = time1;
    tab.time[1] = time2;

    if (programState != Shutdown)
    {
        std::string fn = u8string(u8path(tab.fname).filename());
        messageBox.title = "Reload";
        messageBox.message = "File content of '" + fn + "' has changed. Reload?";
        messageBox.buttons = ImRad::Yes | ImRad::No;

        messageBox.OpenPopup([&](ImRad::ModalResult mr) {
            if (mr == ImRad::Yes)
                DoReloadFile();
            });
    }
    else {
        DoReloadFile();
    }
}

void ActivateTab(int i)
{
    /*doesn't work when activeTab is closed
    std::string lastStyle;
    if (activeTab >= 0)
        lastStyle = fileTabs[activeTab].styleName;*/
    if (i >= fileTabs.size())
        i = (int)fileTabs.size() - 1;
    if (i < 0) {
        activeTab = -1;
        ctx.selected.clear();
        ctx.codeGen = nullptr;
        return;
    }
    activeTab = i;
    auto& tab = fileTabs[i];
    ctx.selected = { tab.rootNode.get() };
    ctx.codeGen = &tab.codeGen;
    ReloadFile();

    if (fileTabs[activeTab].styleName != styleName)
        reloadStyle = true;
}

void NewFile(TopWindow::Kind k)
{
    ctx.kind = k;
    auto top = std::make_unique<TopWindow>(ctx);
    File file;
    file.rootNode = std::move(top);
    file.styleName = DEFAULT_STYLE;
    file.unit = k == TopWindow::Activity ? "dp" : DEFAULT_UNIT;
    file.modified = true;
    fileTabs.push_back(std::move(file));
    ActivateTab((int)fileTabs.size() - 1);
}

void CopyFileReplace(const std::string& from, const std::string& to, std::vector<std::pair<std::string, std::string>>& repl)
{
    std::ifstream fin(u8path(from));
    if (!fin)
        throw std::runtime_error("can't read from " + from);
    std::ofstream fout(u8path(to));
    if (!fout)
        throw std::runtime_error("can't write to " + to);

    std::string line;
    while (std::getline(fin, line))
    {
        size_t i = 0;
        while (true)
        {
            i = line.find("${", i);
            if (i == std::string::npos)
                break;
            size_t j = line.find("}", i);
            if (j == std::string::npos)
                break;
            for (const auto& r : repl)
                if (!line.compare(i + 2, j - i - 2, r.first)) {
                    line.replace(line.begin() + i, line.begin() + j + 1, r.second);
                    j = i + r.second.size();
                    break;
                }
            i = j;
        }
        fout << line << "\n";
    }
}

void DoNewTemplate(int type, const std::string& name)
{
    nfdchar_t *outPath = NULL;
    nfdfilteritem_t filterItem[1] = { { (const nfdchar_t *)"Source code", (const nfdchar_t *)"cpp" } };
    nfdresult_t result = NFD_SaveDialog(&outPath, filterItem, 1, nullptr, "main.cpp");
    if (result != NFD_OKAY)
        return;
    fs::path p = u8path(outPath);
    NFD_FreePath(outPath);
    if (!p.has_extension())
        p.replace_extension(".cpp");

    try {
        switch (type)
        {
        case 0:
            fs::copy_file(u8path(rootPath + "/template/glfw/main.cpp"), p, fs::copy_options::overwrite_existing);
            break;
        case 1: {
            std::string jni = name;
            stx::replace(jni, '.', '_');
            if (name.find('.') == std::string::npos)
                throw std::runtime_error("invalid package name");
            std::string lib = name.substr(name.rfind('.') + 1);

            std::vector<std::pair<std::string, std::string>> repl{
                { "JAVA_PACKAGE", name },
                { "JNI_PACKAGE", jni },
                { "LIB_NAME", lib },
                { "IMRAD_INCLUDE", rootPath + "/include" },
            };
            CopyFileReplace(rootPath + "/template/android/main.cpp", u8string(p), repl);
            CopyFileReplace(rootPath + "/template/android/CMakeLists.txt", u8string(p.replace_filename("CMakeLists.txt")), repl);
            CopyFileReplace(rootPath + "/template/android/MainActivity.java", u8string(p.replace_filename("MainActivity.java")), repl);
            CopyFileReplace(rootPath + "/template/android/AndroidManifest.xml", u8string(p.replace_filename("AndroidManifest.xml")), repl);
            break;
        }
        }
    }
    catch (std::exception& e) {
        messageBox.title = "error";
        messageBox.message = e.what();
        messageBox.buttons = ImRad::Ok;
        messageBox.OpenPopup();
    }
}

void NewTemplate(int type)
{
    if (type == 1)
    {
        //android template
        inputName.title = "Java package name";
        inputName.hint = "com.example.test";
        inputName.OpenPopup([type](ImRad::ModalResult mr) {
            DoNewTemplate(type, inputName.name);
            });
    }
    else
        DoNewTemplate(type, "");
}

bool DoOpenFile(const std::string& path, std::string* errs = nullptr)
{
    File file;
    file.fname = path;
    if (u8string(u8path(file.fname).extension()).compare(0, 2, ".h")) {
        file.fname = file.codeGen.AltFName(file.fname);
    }
    if (!fs::is_regular_file(u8path(path))) {
        if (errs)
            *errs += "Can't read '" + path + "'\n";
        else {
            messageBox.title = "ImRAD";
            messageBox.message = "Can't read '" + path + "'";
            messageBox.buttons = ImRad::Ok;
            messageBox.OpenPopup();
        }
        return false;
    }

    std::error_code err;
    file.time[0] = fs::last_write_time(u8path(file.fname), err);
    file.time[1] = fs::last_write_time(u8path(file.codeGen.AltFName(file.fname)), err);
    std::map<std::string, std::string> params;
    std::string error;
    file.rootNode = file.codeGen.Import(file.fname, params, error);
    auto pit = params.find("style");
    file.styleName = pit == params.end() ? DEFAULT_STYLE : pit->second;
    pit = params.find("unit");
    file.unit = pit == params.end() ? DEFAULT_UNIT : pit->second;
    if (!file.rootNode) {
        if (errs)
            *errs += "Unsuccessful import of '" + path + "'\n";
        else {
            errorBox.title = "CodeGen";
            errorBox.message = "Unsuccessful import because of errors";
            errorBox.error = error;
            errorBox.OpenPopup();
        }
        return false;
    }

    bool styleFound = stx::count_if(styleNames, [&](const auto& st) {
        return st.first == file.styleName;
        });
    if (!styleFound) {
        if (errs)
            *errs += "Uknown style \"" + file.styleName + "\" used\n";
        else
            error = "Unknown style \"" + file.styleName + "\" used\n" + error;
        file.styleName = DEFAULT_STYLE;
    }

    auto it = stx::find_if(fileTabs, [&](const File& f) { return f.fname == file.fname; });
    if (it == fileTabs.end()) {
        fileTabs.push_back({});
        it = fileTabs.begin() + fileTabs.size() - 1;
    }
    int idx = int(it - fileTabs.begin());
    fileTabs[idx] = std::move(file);
    ActivateTab(idx);

    if (error != "") {
        if (errs)
            *errs += error;
        else {
            errorBox.title = "CodeGen";
            errorBox.message = "Import finished with errors";
            errorBox.error = error;
            errorBox.OpenPopup();
        }
    }
    return true;
}

void OpenFile()
{
    nfdchar_t *outPath = NULL;
    nfdfilteritem_t filterItem[1] = { { "Headers", "h,hpp" } };
    nfdresult_t result = NFD_OpenDialog(&outPath, filterItem, 1, nullptr);
    if (result != NFD_OKAY)
        return;

    ctx.mode = UIContext::NormalSelection;
    ctx.selected.clear();
    auto it = stx::find_if(fileTabs, [&](const File& f) { return f.fname == outPath; });
    if (it != fileTabs.end())
    {
        ActivateTab(int(it - fileTabs.begin()));
        if (it->modified) {
            messageBox.title = "Open File";
            messageBox.message = "Reload and lose unsaved changes?";
            messageBox.buttons = ImRad::Yes | ImRad::No;
            messageBox.OpenPopup([=](ImRad::ModalResult mr) {
                if (mr == ImRad::Yes)
                    DoOpenFile(outPath);
                });
        }
        else {
            DoOpenFile(outPath);
        }
    }
    else {
        DoOpenFile(outPath);
    }
    NFD_FreePath(outPath);
}

enum {
    CLOSE_ACTIVE = 0x1,
    CLOSE_ALL = 0x2,
    CLOSE_ALL_BUT_PREVIOUS = 0x4,
};
void CloseFile(int flags = CLOSE_ACTIVE);
bool SaveFile(int flags = 0);
bool SaveFileAs(int flags = 0);

void DoCloseFile(int flags)
{
    if (activeTab < 0)
        return;

    ctx.root = nullptr;
    ctx.selected.clear();
    fileTabs.erase(fileTabs.begin() + activeTab);

    if ((flags & CLOSE_ALL_BUT_PREVIOUS) && fileTabs.size() >= 2) {
        ActivateTab(activeTab >= fileTabs.size() ? 0 : activeTab); //cycle from first tab
        CloseFile(flags);
    }
    else if (flags & CLOSE_ALL) {
        ActivateTab(activeTab);
        CloseFile(flags);
    }
    else {
        ActivateTab(activeTab);
    }
}

void CloseFile(int flags)
{
    if (activeTab < 0)
        return;
    if (fileTabs[activeTab].modified) {
        messageBox.title = "Confirmation";
        std::string fname = u8string(u8path(fileTabs[activeTab].fname).filename());
        if (fname.empty())
            fname = UNTITLED;
        messageBox.message = "Save changes to " + fname + "?";
        messageBox.buttons = ImRad::Yes | ImRad::No | ImRad::Cancel;
        messageBox.OpenPopup([=](ImRad::ModalResult mr) {
            if (mr == ImRad::Yes)
                SaveFile(flags);
            else if (mr == ImRad::No)
                DoCloseFile(flags);
            else
                DoCancelShutdown();
            });
    }
    else {
        DoCloseFile(flags);
    }
}

void DoSaveFile(int flags)
{
    auto& tab = fileTabs[activeTab];
    std::map<std::string, std::string> params{
        { "style", tab.styleName },
        { "unit", tab.unit },
    };
    std::string error;
    if (!tab.codeGen.ExportUpdate(tab.fname, tab.rootNode.get(), params, error))
    {
        DoCancelShutdown();
        errorBox.title = "CodeGen";
        errorBox.message = "Unsuccessful export due to errors";
        errorBox.error = error;
        errorBox.OpenPopup();
        return;
    }

    std::error_code err;
    tab.modified = false;
    tab.time[0] = fs::last_write_time(u8path(tab.fname), err);
    tab.time[1] = fs::last_write_time(u8path(tab.codeGen.AltFName(tab.fname)), err);
    if (error != "" && programState != Shutdown)
    {
        errorBox.title = "CodeGen";
        errorBox.message = "Export finished with errors";
        errorBox.error = error;
        errorBox.OpenPopup([=](ImRad::ModalResult) {
            if (flags)
                DoCloseFile(flags);
            });
        return;
    }

    if (flags)
        DoCloseFile(flags);
}

bool SaveFileAs(int flags)
{
    nfdchar_t *outPath = NULL;
    nfdfilteritem_t filterItem[1] = { { (const nfdchar_t *)"Header File", (const nfdchar_t *)"h,hpp" } };
    nfdresult_t result = NFD_SaveDialog(&outPath, filterItem, 1, nullptr, nullptr);
    if (result != NFD_OKAY) {
        DoCancelShutdown();
        return false;
    }
    auto& tab = fileTabs[activeTab];
    fs::path oldName = u8path(tab.fname);
    fs::path newName = u8path(outPath).replace_extension(".h");
    NFD_FreePath(outPath);
    if (newName == oldName) {
        DoSaveFile(flags);
        return true;
    }

    try {
        if (oldName != "") {
            //copy files first so CppGen can parse it and preserve user content as with Save
            fs::copy_file(oldName, newName, fs::copy_options::overwrite_existing);
            fs::copy_file(
                oldName.replace_extension(".cpp"),
                newName.replace_extension(".cpp"),
                fs::copy_options::overwrite_existing);
        }
        else {
            fs::remove(newName);
            fs::remove(newName.replace_extension(".cpp"));
        }
    }
    catch (std::exception& e)
    {
        DoCancelShutdown();
        messageBox.title = "error";
        messageBox.message = e.what();
        messageBox.buttons = ImRad::Ok;
        messageBox.OpenPopup();
        return false;
    }

    if (oldName == "") {
        tab.codeGen.SetNamesFromId(u8string(newName.stem()));
        tab.fname = u8string(newName.replace_extension(".h"));
        DoSaveFile(flags);
    }
    else {
        messageBox.title = "codegen";
        messageBox.message = "Rename window class?";
        messageBox.buttons = ImRad::Yes | ImRad::No | ImRad::Cancel;
        messageBox.OpenPopup([&tab,newName,flags](ImRad::ModalResult mr) mutable {
            if (mr == ImRad::ModalResult::Cancel)
                return;
            if (mr == ImRad::ModalResult::Yes)
                tab.codeGen.SetNamesFromId(u8string(newName.stem()));
            tab.fname = u8string(newName.replace_extension(".h"));
            DoSaveFile(flags);
            });
    }
    return true;
}

bool SaveFile(int flags)
{
    auto& tab = fileTabs[activeTab];
    if (tab.fname == "") {
        return SaveFileAs(flags);
    }
    else {
        DoSaveFile(flags);
        return true;
    }
}

//todo: dangerous because of no reloading
void SaveAll()
{
    int tmp = activeTab;
    for (activeTab = 0; activeTab < fileTabs.size(); ++activeTab)
    {
        if (!SaveFile())
            break;
    }
    activeTab = tmp;
}

void ShowCode()
{
    if (activeTab < 0)
        return;
    fs::path path = fs::temp_directory_path() / "imrad-preview.cpp";
    std::ofstream fout(path);
    fout << "// NOTE: This is just a preview of the Draw() method. To see the complete code\n"
         << "// including class definition and event handlers inspect generated .h/cpp files\n\n";
    ctx.ind = "";
    auto* root = fileTabs[activeTab].rootNode.get();
    root->Export(fout, ctx);

    if (ctx.errors.size()) {
        fout << "\n// Export finished with errors:\n";
        for (const std::string& e : ctx.errors)
            fout << "// " << e <<  "\n";
    }
    fout.close();
    ShellExec(u8string(path));
}

void NewWidget(const std::string& name)
{
    if (name == "")
    {
        activeButton = "";
        ctx.selected.clear();
        ctx.mode = UIContext::NormalSelection;
    }
    else if (name == "MenuBar")
    {
        if (ctx.root->children.empty() ||
            !dynamic_cast<MenuBar*>(ctx.root->children[0].get()))
        {
            dynamic_cast<TopWindow*>(ctx.root)->flags |= ImGuiWindowFlags_MenuBar;
            ctx.root->children.insert(ctx.root->children.begin(), std::make_unique<MenuBar>(ctx));
            ctx.selected = { ctx.root->children[0]->children[0].get() };
        }
        ctx.mode = UIContext::NormalSelection;
    }
    else if (name == "ContextMenu")
    {
        activeButton = "";
        auto popup = std::make_unique<ContextMenu>(ctx);
        auto item = std::make_unique<MenuIt>(ctx);
        item->label = "Item";
        popup->children.push_back(std::move(item));
        size_t i = 0;
        for (; i < ctx.root->children.size(); ++i)
        {
            if (ctx.root->children[i]->Behavior() & Widget::SnapSides)
                break;
        }
        popup->label = "ContextMenu" + std::to_string(i + 1);
        ctx.root->children.insert(ctx.root->children.begin() + i, std::move(popup));
        ctx.mode = UIContext::NormalSelection;
        ctx.selected = { ctx.root->children[i]->children[0].get() };
    }
    else
    {
        activeButton = name;
        ctx.selected.clear();
        ctx.mode = UIContext::SnapInsert;
        newNode = Widget::Create(name, ctx);
    }
}

void StyleColors()
{
    ImGui::StyleColorsLight();
    ImGuiStyle& style = ImGui::GetStyle();

    style.Alpha = 1.0f;
    style.FrameRounding = 3.0f;
    style.WindowRounding = 3.f;
    style.Colors[ImGuiCol_Text] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    style.Colors[ImGuiCol_TextDisabled] = ImVec4(0.40f, 0.40f, 0.40f, 1.00f);
    style.Colors[ImGuiCol_WindowBg] = ImVec4(0.94f, 0.94f, 0.94f, 0.94f);
    style.Colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    style.Colors[ImGuiCol_PopupBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.94f);
    style.Colors[ImGuiCol_Border] = ImVec4(0.00f, 0.00f, 0.00f, 0.39f);
    style.Colors[ImGuiCol_BorderShadow] = ImVec4(1.00f, 1.00f, 1.00f, 0.10f);
    style.Colors[ImGuiCol_FrameBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.94f);
    style.Colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
    style.Colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
    style.Colors[ImGuiCol_TitleBg] = ImVec4(0.96f, 0.96f, 0.96f, 1.00f);
    style.Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(1.00f, 1.00f, 1.00f, 0.51f);
    style.Colors[ImGuiCol_TitleBgActive] = ImVec4(0.82f, 0.82f, 0.82f, 1.00f);
    style.Colors[ImGuiCol_MenuBarBg] = ImVec4(0.86f, 0.86f, 0.86f, 1.00f);
    style.Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.98f, 0.98f, 0.98f, 0.53f);
    style.Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.69f, 0.69f, 0.69f, 1.00f);
    style.Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.59f, 0.59f, 0.59f, 1.00f);
    style.Colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.49f, 0.49f, 0.49f, 1.00f);
    style.Colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    style.Colors[ImGuiCol_SliderGrab] = ImVec4(0.24f, 0.52f, 0.88f, 1.00f);
    style.Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    style.Colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
    style.Colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
    style.Colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    style.Colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);
    style.Colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.50f);
    style.Colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
    style.Colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
    style.Colors[ImGuiCol_Button] = ImVec4(0.59f, 0.59f, 0.59f, 0.50f);
    style.Colors[ImGuiCol_ButtonHovered] = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
    style.Colors[ImGuiCol_ButtonActive] = ImVec4(0.86f, 0.59f, 0.59f, 1.00f);
    style.Colors[ImGuiCol_PlotLines] = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
    style.Colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
    style.Colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
    style.Colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
    style.Colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
    style.Colors[ImGuiCol_TabSelectedOverline].w = 0;
    style.Colors[ImGuiCol_TabDimmedSelectedOverline].w = 0;
    style.Colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);

    float alpha_ = 0.95f;
    if (false) //dark
    {
        for (int i = 0; i < ImGuiCol_COUNT; i++)
        {
            ImVec4& col = style.Colors[i];
            float H, S, V;
            ImGui::ColorConvertRGBtoHSV(col.x, col.y, col.z, H, S, V);

            if (S < 0.1f)
            {
                V = 1.0f - V;
            }
            ImGui::ColorConvertHSVtoRGB(H, S, V, col.x, col.y, col.z);
            if (col.w < 1.00f)
            {
                col.w *= alpha_;
            }
        }
    }
    else
    {
        for (int i = 0; i < ImGuiCol_COUNT; i++)
        {
            ImVec4& col = style.Colors[i];
            if (col.w < 1.00f)
            {
                col.x *= alpha_;
                col.y *= alpha_;
                col.z *= alpha_;
                col.w *= alpha_;
            }
        }
    }

    //ImRad::SaveStyle(rootPath + "/style/debug.ini");
}

void GetStyles()
{
    styleNames = {
        { "Classic", "" },
        { "Light", "" },
        { "Dark", "" }
    };
    for (fs::directory_iterator it(u8path(rootPath + "/style/")); it != fs::directory_iterator(); ++it)
    {
        if (it->path().extension() != ".ini")
            continue;
        styleNames.push_back({ u8string(it->path().stem()), u8string(it->path()) });
    }
}

const std::array<ImU32, UIContext::Color::COUNT>&
GetCtxColors(const std::string& styleName)
{
    static const std::array<ImU32, UIContext::Color::COUNT> classic{
        IM_COL32(255, 255, 0, 128),
        IM_COL32(255, 0, 0, 255),
        IM_COL32(128, 128, 255, 255),
        IM_COL32(255, 0, 255, 255),
        IM_COL32(0, 255, 255, 255),
        IM_COL32(0, 255, 0, 255),
    };
    static const std::array<ImU32, UIContext::Color::COUNT> light {
        IM_COL32(0, 0, 255, 128),
        IM_COL32(255, 96, 96, 255),
        IM_COL32(128, 128, 255, 255),
        IM_COL32(255, 0, 255, 255),
        IM_COL32(0, 128, 128, 255),
        IM_COL32(0, 255, 0, 255),
    };
    static const std::array<ImU32, UIContext::Color::COUNT> dark{
        IM_COL32(255, 255, 0, 128),
        IM_COL32(255, 0, 0, 255),
        IM_COL32(128, 128, 255, 255),
        IM_COL32(255, 0, 255, 255),
        IM_COL32(0, 255, 255, 255),
        IM_COL32(0, 255, 0, 255),
    };

    if (styleName == "Light")
        return light;
    else if (styleName == "Dark")
        return dark;
    else
        return classic;
}

void LoadStyle()
{
    if (!reloadStyle)
        return;

    reloadStyle = false;
    auto& io = ImGui::GetIO();
    std::string stylePath = rootPath + "/style/";

    glfwSetCursor(window, curWait);
    io.Fonts->Clear();

    //reload ImRAD UI first
    StyleColors();
    io.Fonts->AddFontFromFileTTF((stylePath + uiFontName).c_str(), uiFontSize);
    static ImWchar icons_ranges[] = { ICON_MIN_FA, ICON_MAX_16_FA, 0 };
    ImFontConfig cfg;
    cfg.MergeMode = true;
    //icons_config.PixelSnapH = true;
    const float faSize = uiFontSize * 18.f / 20.f;
    io.Fonts->AddFontFromFileTTF((stylePath + FONT_ICON_FILE_NAME_FAR).c_str(), faSize, &cfg, icons_ranges);
    io.Fonts->AddFontFromFileTTF((stylePath + FONT_ICON_FILE_NAME_FAS).c_str(), faSize, &cfg, icons_ranges);
    cfg.MergeMode = false;
    strcpy(cfg.Name, "imrad.H1");
    io.Fonts->AddFontFromFileTTF((stylePath + uiFontName).c_str(), uiFontSize * 1.5f, &cfg);
    strcpy(cfg.Name, "imrad.H3");
    io.Fonts->AddFontFromFileTTF((stylePath + uiFontName).c_str(), uiFontSize * 1.1f, &cfg);

    strcpy(cfg.Name, "imrad.pg");
    ctx.pgFont = io.Fonts->AddFontFromFileTTF((stylePath + pgFontName).c_str(), pgFontSize, &cfg);
    strcpy(cfg.Name, "imrad.pgb");
    ctx.pgbFont = io.Fonts->AddFontFromFileTTF((stylePath + pgbFontName).c_str(), pgFontSize, &cfg);
    strcpy(cfg.Name, "imrad.explorer");
    io.Fonts->AddFontFromFileTTF((stylePath + "Roboto-Regular.ttf").c_str(), uiFontSize, &cfg);

    cfg.MergeMode = false;
    strcpy(cfg.Name, "simhei");
    ImFont *font = io.Fonts->AddFontFromFileTTF("c:/windows/fonts/simhei.ttf", 23.0f, &cfg, io.Fonts->GetGlyphRangesChineseFull());
    IM_ASSERT(font != nullptr);

	// io.FontDefault = font;  // 设置默认字体，成功显示中文

    //ImGui::PushFont(font);

    ctx.defaultStyleFont = nullptr;
    ctx.fontNames.clear();
    stx::fill(ctx.colors, IM_COL32(0, 0, 0, 255));
    ctx.style = ImGuiStyle();

    if (activeTab >= 0)
    {
        std::string styleName = fileTabs[activeTab].styleName;
        std::string defaultFont = stylePath + "Roboto-Regular.ttf";
        if (styleName == "Classic")
        {
            ImGui::StyleColorsClassic(&ctx.style);
            ctx.defaultStyleFont = io.Fonts->AddFontFromFileTTF(defaultFont.c_str(), uiFontSize);
            ctx.defaultStyleFont->FallbackChar = '#';
            ctx.fontNames = { "" };
            ctx.colors = GetCtxColors(styleName);
        }
        else if (styleName == "Light")
        {
            ImGui::StyleColorsLight(&ctx.style);
            ctx.defaultStyleFont = io.Fonts->AddFontFromFileTTF(defaultFont.c_str(), uiFontSize);
            ctx.defaultStyleFont->FallbackChar = '#';
            ctx.fontNames = { "" };
            ctx.colors = GetCtxColors(styleName);
        }
        else if (styleName == "Dark")
        {
            ImGui::StyleColorsDark(&ctx.style);
            ctx.defaultStyleFont = io.Fonts->AddFontFromFileTTF(defaultFont.c_str(), uiFontSize);
            ctx.defaultStyleFont->FallbackChar = '#';
            ctx.fontNames = { "" };
            ctx.colors = GetCtxColors(styleName);
        }
        else
        {
            std::map<std::string, ImFont*> fontMap;
            std::map<std::string, std::string> extra;
            try {
                auto it = stx::find_if(styleNames, [&](const auto& s) { return s.first == styleName; });
                ImRad::LoadStyle(it->second, 1.f, &ctx.style, &fontMap, &extra);

                ctx.defaultStyleFont = fontMap[""];
                for (const auto& f : fontMap) {
                    ctx.fontNames.push_back(f.first);
                }
                for (const auto& ex : extra) {
                    if (ex.first.compare(0, 13, "imrad.colors."))
                        continue;
                    std::istringstream is(ex.second);
                    int r, g, b, a;
                    is >> r >> g >> b >> a;
                    auto clr = IM_COL32(r, g, b, a);
                    std::string key = ex.first.substr(13);

    #define SET_CLR(a) if (key == #a) ctx.colors[UIContext::a] = clr;
                    SET_CLR(Selected);
                    SET_CLR(Hovered);
                    SET_CLR(Snap1);
                    SET_CLR(Snap2);
                    SET_CLR(Snap3);
                    SET_CLR(Snap4);
                    SET_CLR(Snap5);
    #undef SET_CLR
                }
            }
            catch (std::exception& e)
            {
                //can't OpenPopup here, there is no window parent
                showError = e.what();
            }
        }
    }
    ImGui_ImplOpenGL3_DestroyFontsTexture();
    ImGui_ImplOpenGL3_CreateFontsTexture();
}

void DoCloneStyle(const std::string& name)
{
    auto FormatClr = [](ImU32 c) {
        std::ostringstream os;
        os << (c & 0xff) << " " <<
            ((c >> 8) & 0xff) << " " <<
            ((c >> 16) & 0xff) << " " <<
            ((c >> 24) & 0xff);
        return os.str();
    };

    std::string from = fileTabs[activeTab].styleName;
    std::string path = rootPath + "/style/" + name + ".ini";
    try
    {
        if (from == "Classic" || from == "Dark" || from == "Light")
        {
            ImGuiStyle style;
            if (from == "Dark")
                ImGui::StyleColorsDark(&style);
            else if (from == "Light")
                ImGui::StyleColorsLight(&style);
            else
                ImGui::StyleColorsClassic(&style);

            std::map<std::string, std::string> extra;
            const auto& colors = GetCtxColors(from);
#define SET_CLR(a) extra[std::string("imrad.colors.") + #a] = FormatClr(colors[UIContext::Color::a]);
            SET_CLR(Selected);
            SET_CLR(Hovered);
            SET_CLR(Snap1);
            SET_CLR(Snap2);
            SET_CLR(Snap3);
            SET_CLR(Snap4);
            SET_CLR(Snap5);
#undef SET_CLR
            ImRad::SaveStyle(path, &style, extra);
        }
        else
        {
            fs::copy_file(u8path(rootPath + "/style/" + from + ".ini"), u8path(path), fs::copy_options::overwrite_existing);
        }

        fileTabs[activeTab].styleName = name;
        if (!stx::count_if(styleNames, [&](const auto& s) { return s.first == name; }))
            styleNames.push_back({ name, path });

        messageBox.title = "Style saved";
        messageBox.message = "New style was saved as '" + path + "'";
        messageBox.buttons = ImRad::Ok;
        messageBox.OpenPopup();
    }
    catch (std::exception& e)
    {
        messageBox.title = "error";
        messageBox.message = e.what();
        messageBox.buttons = ImRad::Ok;
        messageBox.OpenPopup();
    }
}

void CloneStyle()
{
    inputName.title = "Clone Style";
    inputName.hint = "Enter new style name";
    inputName.OpenPopup([](ImRad::ModalResult mr)
        {
            std::string path = rootPath + "/style/" + inputName.name + ".ini";
            if (fs::exists(u8string(path))) {
                messageBox.title = "Confirmation";
                messageBox.message = "Overwrite existing style?";
                messageBox.buttons = ImRad::Yes | ImRad::No;
                messageBox.OpenPopup([=](ImRad::ModalResult mr) {
                    if (mr == ImRad::Yes)
                        DoCloneStyle(inputName.name);
                    });
            }
            else
                DoCloneStyle(inputName.name);
        });
}

void DockspaceUI()
{
    // We are using the ImGuiWindowFlags_NoDocking flag to make the parent window not dockable into,
    // because it would be confusing to have two docking targets within each others.
    ImGuiWindowFlags window_flags = /*ImGuiWindowFlags_MenuBar |*/ ImGuiWindowFlags_NoDocking;
    ImGuiViewport* viewport = ImGui::GetMainViewport();
    ImGui::SetNextWindowPos(viewport->Pos + ImVec2(0, TB_SIZE + 0));
    ImGui::SetNextWindowSize(viewport->Size - ImVec2(0, TB_SIZE + 0));
    ImGui::SetNextWindowViewport(viewport->ID);
    ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
    ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
    window_flags |= ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove;
    window_flags |= ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNavFocus;
    window_flags |= ImGuiWindowFlags_NoBackground;

    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
    ImGui::Begin("DockSpace", nullptr, window_flags);
    ImGui::PopStyleVar();
    ImGui::PopStyleVar(2);

    ImGuiID dockspace_id = ImGui::GetID("MyDockSpace");
    ImGui::DockSpace(dockspace_id, ImVec2(0.0f, 0.0f), ImGuiDockNodeFlags_PassthruCentralNode | ImGuiDockNodeFlags_NoDockingOverCentralNode);
    if (programState == Init)
    {
        ImGui::DockBuilderRemoveNode(dockspace_id); // clear any previous layout
        ImGui::DockBuilderAddNode(dockspace_id, ImGuiDockNodeFlags_PassthruCentralNode | ImGuiDockNodeFlags_DockSpace);
        ImGui::DockBuilderSetNodeSize(dockspace_id, viewport->Size);
        ImGuiID dock_id_right = ImGui::DockBuilderSplitNode(dockspace_id, ImGuiDir_Right, 350.f / viewport->Size.x, nullptr, &dockspace_id);
        ImGuiID dock_id_left = ImGui::DockBuilderSplitNode(dockspace_id, ImGuiDir_Left, 300.f / (viewport->Size.x - 350), nullptr, &dockspace_id);
        ImGuiID dock_id_right1, dock_id_right2;
        ImGui::DockBuilderSplitNode(dock_id_right, ImGuiDir_Up, 230.f / (viewport->Size.y - TB_SIZE), &dock_id_right1, &dock_id_right2);
        float vh = viewport->Size.y - TB_SIZE;
        ImGuiID dock_id_top = ImGui::DockBuilderSplitNode(dockspace_id, ImGuiDir_Up, TAB_SIZE / vh, nullptr, &dockspace_id);

        ImGui::DockBuilderDockWindow("FileTabs", dock_id_top);
        ImGui::DockBuilderDockWindow("Hierarchy", dock_id_left);
        ImGui::DockBuilderDockWindow("Explorer", dock_id_left);
        ImGui::DockBuilderDockWindow("Widgets", dock_id_right1);
        ImGui::DockBuilderDockWindow("Properties", dock_id_right2);
        ImGui::DockBuilderDockWindow("Events", dock_id_right2);
        ImGui::DockBuilderFinish(dockspace_id);
    }

    ImGuiDockNode* cn = ImGui::DockBuilderGetCentralNode(dockspace_id);
    ctx.designAreaMin = cn->Pos;
    ctx.designAreaMax = cn->Pos + cn->Size;

    if (fileTabs.empty())
    {
        std::pair<std::string, std::string> help[]{
            { "Create a New File", "Ctrl+N" },
            { "Open File", "Ctrl+O" }
        };
        float lh = 2 * ImGui::GetTextLineHeight();
        for (size_t i = 0; i < std::size(help); ++i)
        {
            ImVec2 size = ImGui::CalcTextSize((help[i].first + help[i].second).c_str());
            ImGui::SetCursorScreenPos({
                viewport->WorkSize.x / 2.5f,
                (viewport->WorkSize.y - (std::size(help) - 1) * lh) / 2 + i * lh
                });
            ImVec4 clr = ImGui::GetStyleColorVec4(ImGuiCol_Text);
            clr.w = 0.75f;
            ImGui::PushStyleColor(ImGuiCol_Text, clr);
            ImGui::Selectable(help[i].first.c_str(), false, 0, { 150, 0 });
            ImGui::PopStyleColor();
            clr.w = 1.f;
            ImGui::PushStyleColor(ImGuiCol_Text, clr);
            for (size_t c = 0; c < help[i].second.size(); )
            {
                bool first = !c;
                std::string sub;
                size_t j = help[i].second.find('+', c);
                if (j != std::string::npos) {
                    sub = help[i].second.substr(c, j - c);
                    c = j + 1;
                }
                else {
                    sub = help[i].second.substr(c);
                    c = j;
                }
                ImGui::SameLine(0, 0);
                if (!first) {
                    ImGui::Text(" + ");
                    ImGui::SameLine(0, 0);
                }
                ImGui::Selectable(sub.c_str(), true, 0, { ImGui::CalcTextSize(sub.c_str()).x, 0 });
            }
            ImGui::PopStyleColor();
        }
    }
    else
    {
        float sp = ImGui::GetStyle().ItemSpacing.x;
        ImGui::SetCursorScreenPos({
            ctx.designAreaMin.x + sp,
            ctx.designAreaMax.y - ImGui::GetTextLineHeight() - sp
            });
        ImVec4 clr = ImGui::GetStyleColorVec4(ImGuiCol_Text);
        clr.w = 0.5f;
        ImGui::PushStyleColor(ImGuiCol_Text, clr);
        ImGui::Text("Zoom: %d%%", (int)(ctx.zoomFactor * 100));
        ImGui::PopStyleColor();
    }

    ImGui::End();
}

void ToolbarUI()
{
    ImGuiViewport* viewport = ImGui::GetMainViewport();
    ImGui::SetNextWindowPos(ImVec2(viewport->Pos.x, viewport->Pos.y + 0));
    ImGui::SetNextWindowSize(ImVec2(viewport->Size.x, TB_SIZE));
    ImGui::SetNextWindowViewport(viewport->ID);

    ImGuiWindowFlags window_flags = 0
        | ImGuiWindowFlags_NoDocking
        | ImGuiWindowFlags_NoTitleBar
        | ImGuiWindowFlags_NoResize
        | ImGuiWindowFlags_NoMove
        | ImGuiWindowFlags_NoScrollbar
        | ImGuiWindowFlags_NoNavInputs
        | ImGuiWindowFlags_NoSavedSettings
        ;
    ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0);
    ImGui::Begin("TOOLBAR", nullptr, window_flags);
    ImGui::PopStyleVar();

    const float BTN_SIZE = 30;
    const auto& io = ImGui::GetIO();
    if (ImGui::Button(ICON_FA_FILE " " ICON_FA_CARET_DOWN) ||
        ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_N, ImGuiInputFlags_RouteGlobal))
        ImGui::OpenPopup("NewMenu");
    if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
        ImGui::SetTooltip("New File (Ctrl+N)");
    ImGui::SetNextWindowPos(ImGui::GetCursorPos());
    ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, { 0, 10 });
    if (ImGui::BeginPopup("NewMenu"))
    {
        if (ImGui::MenuItem(ICON_FA_TV " Main Window", "\tGLFW"))
            NewFile(TopWindow::MainWindow);
        if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
            ImGui::SetTooltip("ImGui window integrated into OS window (GLFW)");
        if (ImGui::MenuItem(ICON_FA_WINDOW_MAXIMIZE "  Window", ""))
            NewFile(TopWindow::Window);
        if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
            ImGui::SetTooltip("Floating ImGui window");
        if (ImGui::MenuItem(ICON_FA_CLONE "  Popup", ""))
            NewFile(TopWindow::Popup);
        if (ImGui::MenuItem(ICON_FA_WINDOW_RESTORE "  Modal Popup", ""))
            NewFile(TopWindow::ModalPopup);
        if (ImGui::MenuItem(ICON_FA_MOBILE_SCREEN "  Activity", "\tAndroid"))
            NewFile(TopWindow::Activity);

        ImGui::Separator();
        if (ImGui::MenuItem(ICON_FA_FILE_PEN "  main.cpp", "\tGLFW"))
            NewTemplate(0);
        if (ImGui::MenuItem(ICON_FA_FILE_PEN "  main+java+manifest", "\tAndroid"))
            NewTemplate(1);

        ImGui::EndPopup();
    }
    ImGui::PopStyleVar();

    ImGui::SameLine();
    if (ImGui::Button(ICON_FA_FOLDER_OPEN) ||
        ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_O, ImGuiInputFlags_RouteGlobal))
        OpenFile();
    if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
        ImGui::SetTooltip("Open File (Ctrl+O)");

    ImGui::BeginDisabled(activeTab < 0);

    ImGui::SameLine();
    float cx = ImGui::GetCursorPosX();
    //ImGui::BeginDisabled(activeTab >= 0 && !fileTabs[activeTab].modified);
    if (ImGui::Button(ICON_FA_FLOPPY_DISK) ||
        ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_S, ImGuiInputFlags_RouteGlobal))
        SaveFile();
    //ImGui::EndDisabled();
    if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
        ImGui::SetTooltip("Save File (Ctrl+S)");

    ImGui::SameLine(0, 0);
    ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical);
    ImGui::SameLine(0, 0);
    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, { 2, ImGui::GetStyle().FramePadding.y });
    if (ImGui::Button(ICON_FA_CARET_DOWN))
        ImGui::OpenPopup("SaveMenu");
    ImGui::PopStyleVar();
    ImGui::SetNextWindowPos({ cx, ImGui::GetCursorPosY() });
    ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, { 0, 10 });
    if (ImGui::BeginPopup("SaveMenu"))
    {
        if (ImGui::MenuItem("Save As..."))
            SaveFileAs();
        if (ImGui::MenuItem("Save All", "\tCtrl+Shift+S"))
            SaveAll();
        ImGui::EndPopup();
    }
    ImGui::PopStyleVar();
    if (ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiMod_Shift | ImGuiKey_S, ImGuiInputFlags_RouteGlobal))
        SaveAll();

    ImGui::SameLine();
    ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical);
    ImGui::SameLine();
    ImGui::Text("Style");
    ImGui::SameLine();
    ImGui::SetNextItemWidth(100);
    styleName = "";
    if (activeTab >= 0)
        styleName = fileTabs[activeTab].styleName;
    if (ImGui::BeginCombo("##style", styleName.c_str()))
    {
        for (size_t i = 0; i < styleNames.size(); ++i)
        {
            if (ImGui::Selectable(styleNames[i].first.c_str(), styleNames[i].first == styleName))
            {
                reloadStyle = true;
                assert(activeTab >= 0);
                fileTabs[activeTab].modified = true;
                fileTabs[activeTab].styleName = styleNames[i].first;
            }
            if (i == 2 && i + 1 < styleNames.size())
                ImGui::Separator();
        }
        ImGui::EndCombo();
    }
    ImGui::SameLine();
    if (ImGui::Button(ICON_FA_CLONE))
        CloneStyle();
    if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
        ImGui::SetTooltip("Clone Style");
    ImGui::SameLine();
    ImGui::Text("Units");
    ImGui::SameLine();
    ImGui::SetNextItemWidth(100);
    const std::string unit = activeTab >= 0 ? fileTabs[activeTab].unit : "";
    std::array<const char*, 2> UNITS{ "px", /*"fs",*/ "dp" };
    int usel = 0;
    if (unit != "")
        usel = (int)(stx::find(UNITS, unit) - UNITS.begin());
    if (ImGui::Combo("##units", &usel, stx::join(UNITS, std::string_view("\0", 1)).c_str())) // "px\0fs\0dp\0"))
    {
        auto& tab = fileTabs[activeTab];
        tab.unit = UNITS[usel];
        tab.modified = true;
    }
    ImGui::SameLine();
    ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical);

    ImGui::SameLine();
    ImGui::BeginDisabled(activeTab < 0);
    if (ImGui::Button(ICON_FA_BOLT) || // ICON_FA_BOLT, ICON_FA_RIGHT_TO_BRACKET) ||
        ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_P, ImGuiInputFlags_RouteGlobal))
        ShowCode();
    if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
        ImGui::SetTooltip("Preview Code (Ctrl+P)");
    ImGui::EndDisabled();

    ImGui::SameLine();
    if (ImGui::Button(ICON_FA_CUBES))
    {
        classWizard.codeGen = ctx.codeGen;
        classWizard.root = fileTabs[activeTab].rootNode.get();
        classWizard.modified = &fileTabs[activeTab].modified;
        classWizard.OpenPopup();
    }
    if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
        ImGui::SetTooltip("Class Wizard");

    ImGui::SameLine();
    bool showHelper = activeTab >= 0 &&
        ctx.selected.size() >= 1 &&
        (ctx.selected[0]->Behavior() & UINode::SnapSides);
    if (showHelper)
    {
        auto pinfo = ctx.root->FindChild(ctx.selected[0]);
        if (!pinfo || (pinfo->first->Behavior() & UINode::SnapItemInterior))
            showHelper = false;
    }
    ImGui::BeginDisabled(!showHelper);
    if (ImGui::Button(ICON_FA_BORDER_NONE))
    {
        horizLayout.root = fileTabs[activeTab].rootNode.get();
        HorizLayout::ExpandSelection(ctx.selected, horizLayout.root);
        horizLayout.selected = ctx.selected;
        horizLayout.ctx = &ctx;
        horizLayout.OpenPopup();
    }
    ImGui::EndDisabled();
    if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal))
        ImGui::SetTooltip("Table Layout Helper");
    ImGui::SameLine();

    ImGui::EndDisabled();

    ImGui::SameLine();
    ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical);

    ImGui::SameLine();
    if (ImGui::Button(ICON_FA_GEAR))
    {
        std::vector<std::string> fontNames;
        for (const auto& entry : fs::directory_iterator(u8path(rootPath + "/style/")))
        {
            if (entry.is_regular_file() && entry.path().extension() == ".ttf")
                fontNames.push_back(u8string(entry.path().stem()));
        }
        settingsDlg.fontNames = std::move(fontNames);
        settingsDlg.uiFontName = uiFontName.substr(0, uiFontName.size() - 4);
        settingsDlg.uiFontSize = std::to_string((int)uiFontSize);
        settingsDlg.pgFontName = pgFontName.substr(0, pgFontName.size() - 4);
        settingsDlg.pgbFontName = pgbFontName.substr(0, pgbFontName.size() - 4);
        settingsDlg.pgFontSize = std::to_string((int)pgFontSize);
        settingsDlg.OpenPopup([](ImRad::ModalResult)
        {
            uiFontName = settingsDlg.uiFontName + ".ttf";
            uiFontSize = std::stof(settingsDlg.uiFontSize);
            pgFontName = settingsDlg.pgFontName + ".ttf";
            pgbFontName = settingsDlg.pgbFontName + ".ttf";
            pgFontSize = std::stof(settingsDlg.pgFontSize);

            ImGui::SaveIniSettingsToDisk(ImGui::GetIO().IniFilename);
            reloadStyle = true;
        });
    }

    ImGui::SameLine();
    float defHeight = ImGui::GetFrameHeightWithSpacing();
    ImGui::Dummy(ImGui::CalcItemSize({ -defHeight, 1 }, 0, 0));
    ImGui::SameLine();
    if (ImGui::Button(ICON_FA_CIRCLE_INFO))
    {
        aboutDlg.OpenPopup();
    }

    ImGui::End();

    float sp = ImGui::GetStyle().ItemSpacing.x;
    ImGui::SetNextWindowPos({ viewport->Size.x - 520, 100 }, ImGuiCond_FirstUseEver);
    ImGui::SetNextWindowSize({ 140, 260 }, ImGuiCond_FirstUseEver);
    ImGui::Begin("Widgets", nullptr, ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoScrollbar);
    int n = (int)std::max(1.f, ImGui::GetContentRegionAvail().x / (BTN_SIZE + sp));
    ImGui::PushStyleVar(ImGuiStyleVar_SelectableTextAlign, { 0.5f, 0.5f });
    for (const auto& cat : tbButtons)
    {
        ImGui::SetNextItemOpen(true, ImGuiCond_Appearing);
        if (ImGui::CollapsingHeader(cat.first.c_str()))
        {
            int rows = (stx::ssize(cat.second) + n - 1) / n;
            float h = rows * BTN_SIZE + (rows - 1) * 5;
            ImGui::BeginChild(("cat" + cat.first).c_str(), { 0, h }, ImGuiChildFlags_NavFlattened, 0);
            ImGui::Columns(n, nullptr, false);
            for (const auto& tb : cat.second)
            {
                if (ImGui::Selectable(tb.label.c_str(), activeButton == tb.name, 0, ImVec2(BTN_SIZE, BTN_SIZE)))
                    NewWidget(tb.name);
                if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal) && tb.name != "")
                    ImGui::SetTooltip("%s", tb.name.c_str());

                ImGui::NextColumn();
            }
            ImGui::EndChild();
        }
    }
    ImGui::PopStyleVar();
    ImGui::End();
}

void TabsUI()
{
    ImGuiWindowFlags window_flags = 0
        //| ImGuiWindowFlags_NoDocking
        | ImGuiWindowFlags_NoTitleBar
        | ImGuiWindowFlags_NoResize
        | ImGuiWindowFlags_NoCollapse
        | ImGuiWindowFlags_NoMove
        | ImGuiWindowFlags_NoScrollbar
        //| ImGuiWindowFlags_NoSavedSettings
        ;
    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(4, 0.0f));
    ImGuiWindowClass window_class;
    window_class.DockNodeFlagsOverrideSet = ImGuiDockNodeFlags_NoTabBar | ImGuiDockNodeFlags_NoResize;
    ImGui::SetNextWindowClass(&window_class);
    ImGui::Begin("FileTabs", 0, window_flags);
    if (ImGui::BeginTabBar(".Tabs", ImGuiTabBarFlags_NoTabListScrollingButtons | ImGuiTabBarFlags_Reorderable))
    {
        ImGui::PopStyleVar();
        int untitled = 0;
        for (int i = 0; i < (int)fileTabs.size(); ++i)
        {
            ImGui::PushID(i);
            const auto& tab = fileTabs[i];
            std::string fname = u8string(u8path(tab.fname).filename());
            if (fname == "")
                fname = UNTITLED + std::to_string(++untitled);
            if (tab.modified)
                fname += " *";
            bool notClosed = true;

            if (ImGui::BeginTabItem(fname.c_str(), &notClosed, i == activeTab ? ImGuiTabItemFlags_SetSelected : 0))
                ImGui::EndTabItem();
            if (ImGui::IsItemHovered(ImGuiHoveredFlags_DelayNormal) && tab.fname != "")
                ImGui::SetTooltip("%s", tab.fname.c_str());

            std::string popupId = "TabPopup" + std::to_string(i);
            ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, { 0, 10 });
            if (ImGui::BeginPopup(popupId.c_str()))
            {
                /*if (ImGui::MenuItem("Save", "Ctrl+S"))
                {
                    ActivateTab(i);
                    SaveFile();
                }*/
                if (ImGui::MenuItem("Close", "Ctrl+F4"))
                {
                    ActivateTab(i);
                    CloseFile();
                }
                if (ImGui::MenuItem("Close All"))
                    CloseFile(CLOSE_ALL);
                if (ImGui::MenuItem("Close All But This") && fileTabs.size() >= 2) {
                    ActivateTab(i + 1 == fileTabs.size() ? 0 : i + 1); //cycle from beginning
                    CloseFile(CLOSE_ALL_BUT_PREVIOUS);
                }
                ImGui::Separator();
                if (ImGui::MenuItem("Copy Full Path"))
                    ImGui::SetClipboardText(("\"" + tab.fname + "\"").c_str());
                if (ImGui::MenuItem("Open Containing Folder"))
                    ShellExec(u8string(u8path(tab.fname).parent_path()));

                ImGui::EndPopup();
            }
            ImGui::PopStyleVar();

            if (!notClosed ||
                (i == activeTab && ImGui::Shortcut(ImGuiKey_F4 | ImGuiMod_Ctrl, ImGuiInputFlags_RouteGlobal))) //ImGui::IsKeyPressed(ImGuiKey_F4, false) && ImGui::GetIO().KeyCtrl))
            {
                ActivateTab(i);
                CloseFile();
            }
            else if (ImGui::IsItemActivated() && i != activeTab)
            {
                ActivateTab(i);
            }
            else if (ImRad::IsItemContextMenuClicked())
            {
                ActivateTab(i);
                ImGui::OpenPopup(popupId.c_str());
            }

            ImGui::PopID();
        }
        ImGui::EndTabBar();
    }
    else
        ImGui::PopStyleVar();
    ImGui::End();
}

void HierarchyUI()
{
    //ImGui::PushFont(ctx.defaultFont); icons are FA
    ImGui::PushStyleVarX(ImGuiStyleVar_WindowPadding, 0);
    ImGui::Begin("Hierarchy");
    if (activeTab >= 0 && fileTabs[activeTab].rootNode)
        fileTabs[activeTab].rootNode->TreeUI(ctx);
    ImGui::End();
    ImGui::PopStyleVar();
}

void ExplorerUI(TextEditor* editor)
{
    ExplorerUI(*ctx.codeGen, [&editor](const std::string& fpath) {

        auto m5 = QuickDigest5::fileToHash(fpath);



        auto [pth_img, pth_json] = get_img_json_pth(m5);

        if (!std::filesystem::exists(pth_json)) {
           // 文件不存在，调用 wechat ocr 识别

            std::string result = rec(fpath.c_str());

            std::string b64_str = base64_encode(fpath);

            std::ofstream f_json(pth_json, std::ios::out | std::ios::binary);
            f_json.write(result.c_str(), result.size());
			f_json.close();

            std::ofstream f_b64(pth_img, std::ios::out | std::ios::binary);
            f_b64.write(b64_str.c_str(), b64_str.size());
            f_b64.close();

            json jsn = json::parse(result);
            std::string jsn_str = jsn.dump(4);

            if (!std::filesystem::exists(pth_json) || !std::filesystem::exists(pth_img)) {
                return 1;
            }
        }

        std::ifstream f(pth_json);
        if (!f.is_open()) {
            return 1;
        }
        json jsn = json::parse(f);

        editor->SetText(jsn, m5);

        //DoOpenFile(fpath);
    });
}

bool BeginPropGroup(const std::string& cat, bool forceOpen, bool& forceSameRow)
{
    bool topLevel = cat.find('.') == std::string::npos;
    forceSameRow = !topLevel;
    ImVec2 pad = ImGui::GetStyle().FramePadding;
    ImGui::TableNextRow();
    ImGui::TableSetColumnIndex(0);
    ImGui::AlignTextToFramePadding();
    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, { 0.0f, pad.y });
    ImGui::PushFont(topLevel ? ctx.pgbFont : ctx.pgFont);
    int flags = ImGuiTreeNodeFlags_SpanAllColumns /*| ImGuiTreeNodeFlags_NoNavFocus*/;
    std::string str;
    if (topLevel)
    {
        ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0,
            ImGui::ColorConvertFloat4ToU32(ImGui::GetStyleColorVec4(ImGuiCol_TableBorderLight)));
        str = std::string(1, std::toupper(cat[0])) + cat.substr(1);
        if (str != "Appearance" & str != "Common")
            flags |= ImGuiTreeNodeFlags_DefaultOpen;
    }
    else
    {
        size_t i1 = cat.rfind('.');
        if (i1 == std::string::npos || i1 + 1 == cat.size())
            str = cat;
        else
            str = cat.substr(i1 + 1);
    }
    if (!topLevel)
        ImGui::Unindent();
    ImGui::SetNextItemAllowOverlap();
    if (forceOpen)
        ImGui::SetNextItemOpen(true);
    //see https://github.com/ocornut/imgui/issues/8551
    //ImGui::PushItemFlag(ImGuiItemFlags_NoNav, true);
    bool open;
    if (!forceSameRow)
        open = ImGui::TreeNodeEx(str.c_str(), flags);
    else {
        open = ImGui::TreeNodeEx(("###TreeNode." + cat).c_str(), flags);
        ImGui::SameLine(0, 0);
    }
    //ImGui::PopItemFlag();
    if (!topLevel && !forceSameRow)
        ImGui::Indent();
    ImGui::PopFont();
    ImGui::PopStyleVar();
    if (!open && !forceSameRow)
        ImGui::TableNextColumn();
    return open;
}

void EndPropGroup(const std::string& cat, bool open)
{
    bool topLevel = cat.find('.') == std::string::npos;
    if (open)
        ImGui::TreePop();
}

std::vector<std::string_view> GetCat(std::string_view pname)
{
    std::vector<std::string_view> cat;
    size_t i1 = 0;
    while (1) {
        size_t i2 = pname.find_first_of(".#", i1);
        if (i2 == std::string::npos || pname[i2] == '#')
            break;
        cat.push_back(pname.substr(i1, i2 - i1));
        i1 = i2 + 1;
    }
    return cat;
}

void PropertyRowsUI(bool pr)
{
    int keyPressed = 0;
    if (addInputCharacter)
    {
        //select all text when activating
        auto* g = ImGui::GetCurrentContext();
        g->NavNextActivateFlags &= ~ImGuiActivateFlags_TryToPreserveState;
        g->NavActivateFlags &= ~ImGuiActivateFlags_TryToPreserveState;
        //and send a character to overwrite it
        ImGui::GetIO().AddInputCharacter(addInputCharacter);
        addInputCharacter = 0;
    }
    //detect keypress when Input is inactive
    if (!ImGui::GetIO().WantTextInput &&
        !(ImGui::GetIO().KeyMods & ~ImGuiMod_Shift) &&
        !ImGui::GetTopMostPopupModal()) //TopMostAndVisible doesn't work with ClassWizard open??
    {
        for (int key = ImGuiKey_A; key <= ImGuiKey_Z; ++key)
            if (ImGui::IsKeyPressed((ImGuiKey)key)) {
                keyPressed = key - ImGuiKey_A + (ImGui::GetIO().KeyShift ? 'A' : 'a');
                break;
            }
        for (int key = ImGuiKey_Keypad0; key <= ImGuiKey_Keypad9; ++key)
            if (ImGui::IsKeyPressed((ImGuiKey)key)) {
                keyPressed = key - ImGuiKey_Keypad0 + '0';
                break;
            }
        if (ImGui::IsKeyPressed(ImGuiKey_KeypadSubtract))
            keyPressed = '-';
        if (ImGui::IsKeyPressed(ImGuiKey_KeypadDecimal))
            keyPressed = '.';
    }

    //header
    /*if (pr)
    {
        std::string header;
        if (ctx.selected.size() == 1)
            header = ctx.selected[0]->GetTypeName();
        else
            header = std::to_string(ctx.selected.size()) + " selected";
        ImGui::PushStyleColor(ImGuiCol_ChildBg, 0xffeafafa); // ImGui::GetStyleColorVec4(ImGuiCol_TabUnfocusedActive)); // 0xffc0c0c0);
        ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, { 10, 4 });
        if (ImGui::BeginChild("##typeChld", { -1, 0 }, ImGuiChildFlags_AlwaysAutoResize | ImGuiChildFlags_AutoResizeY | ImGuiChildFlags_AlwaysUseWindowPadding, 0)) {
            ImGui::Text("%s", header.c_str());
            ImGui::EndChild();
        }
        ImGui::PopStyleVar();
        ImGui::PopStyleColor();
        ImGui::SetCursorPosY(ImGui::GetCursorPosY() - ImGui::GetStyle().ItemSpacing.y);
    }*/
    //clear bg
    ImVec2 pgMin = ImGui::GetCursorScreenPos();
    ImGui::GetWindowDrawList()->AddRectFilled(
        { pgMin.x + ImGui::GetStyle().IndentSpacing + 1, pgMin.y },
        ImGui::GetCurrentWindow()->InnerRect.Max,
        0xfffafafa
    );
    ImGui::GetWindowDrawList()->AddRectFilled(
        { pgMin.x, pgMin.y + (pr ? pgHeight : pgeHeight) },
        { pgMin.x + ImGui::GetStyle().IndentSpacing + 1, ImGui::GetCurrentWindow()->InnerRect.Max.y },
        0xfffafafa
    );
    ImGui::PushItemFlag(ImGuiItemFlags_NoNav, true); //ImGuiChildFlags_NavFlattened emulation
    ImGuiTableFlags flags = ImGuiTableFlags_BordersOuter | ImGuiTableFlags_BordersInnerH | ImGuiTableFlags_Resizable | ImGuiTableFlags_ScrollY;
    if (ImGui::BeginTable(pr ? "pg" : "pge", 2, flags))
    {
        ImGui::TableSetupColumn("name", ImGuiTableColumnFlags_WidthStretch);
        ImGui::TableSetupColumn("value", ImGuiTableColumnFlags_WidthStretch);
        ImGui::PushItemFlag(ImGuiItemFlags_NoNav, false); //Pop+Push doesn't work here

        //find parents for widget::PropertyUI and BindingButton
        if (ctx.selected.size() && ctx.root) {
            UINode* cur = ctx.selected[0];
            ctx.parents = { cur };
            while (auto pinfo = ctx.root->FindChild(cur)) {
                cur = pinfo->first;
                ctx.parents.insert(ctx.parents.begin(), cur);
            }
        }
        //determine common properties for a selection set
        //todo: remember to clear out differing values
        //todo: combine enabled state
        std::vector<std::string_view> pnames;
        for (auto* node : ctx.selected)
        {
            std::vector<std::string_view> pn;
            auto props = pr ? node->Properties() : node->Events();
            for (auto& p : props) {
                if (ctx.selected.size() == 1 ||
                    (p.name.size() > 3 && p.name.compare(p.name.size() - 3, 3, "##1")))
                {
                    pn.push_back(p.name);
                }
            }
            stx::sort(pn);
            if (node == ctx.selected[0])
                pnames = std::move(pn);
            else {
                std::vector<std::string_view> pres;
                stx::set_intersection(pnames, pn, std::back_inserter(pres));
                pnames = std::move(pres);
            }
        }
        std::vector<std::string_view> forceCatOpen;
        if (pr && keyPressed)
        {
            if (stx::count(pnames, lastPropName))
                forceCatOpen = GetCat(lastPropName);
        }

        ImGui::PushFont(ctx.pgFont);
        ImVec2 framePad = ImGui::GetStyle().FramePadding;
        ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, { framePad.x * 0.5f, framePad.y * 0.5f });
        //when selecting other widget of same kind from Tree, value from previous widget
        //wants to be sent to the new widget because input IDs are the same
        //PushID widget ptr to prevent it
        //We PopID/PushID before a category treeNode to keep them open/close across all widgets
        //having same property
        ImGui::PushID(ctx.selected[0]);
        //edit first widget
        auto props = pr ? ctx.selected[0]->Properties() : ctx.selected[0]->Events();
        std::string pval;
        std::vector<std::string_view> lastCat;
        std::vector<bool> catOpen;
        for (int i = 0; i < (int)props.size(); ++i)
        {
            const auto& prop = props[i];
            if (!stx::count(pnames, prop.name))
                continue;
            std::vector<std::string_view> cat = GetCat(prop.name);
            bool forceSameRow = false;
            if (cat != lastCat)
            {
                while (lastCat.size() &&
                    (lastCat.size() > cat.size() ||
                        !std::equal(lastCat.begin(), lastCat.end(), cat.begin(), cat.begin() + lastCat.size())))
                {
                    EndPropGroup(stx::join(lastCat, "."), catOpen.back());
                    lastCat.pop_back();
                    catOpen.pop_back();
                }
                bool forceOpen = cat.size() <= forceCatOpen.size() &&
                    std::equal(cat.begin(), cat.end(), forceCatOpen.begin(), forceCatOpen.begin() + cat.size());
                while (lastCat.size() < cat.size())
                {
                    lastCat.push_back(cat[lastCat.size()]);
                    bool open = false;
                    if (!stx::count(catOpen, false))
                    {
                        ImGui::PopID();
                        open = BeginPropGroup(stx::join(lastCat, "."), forceOpen, forceSameRow);
                        ImGui::PushID(ctx.selected[0]);
                    }
                    catOpen.push_back(open);
                }
            }
            if (lastCat.size() && stx::count(catOpen, false) && !forceSameRow)
                continue;
            if (keyPressed && props[i].name == lastPropName) {
                //todo: don't if property is disabled
                addInputCharacter = keyPressed;
                ImGui::SetKeyboardFocusHere();
            }
            if (!forceSameRow) {
                ImGui::TableNextRow();
                ImGui::TableSetColumnIndex(0);
                ImGui::AlignTextToFramePadding();
            }
            bool change = pr ? ctx.selected[0]->PropertyUI(i, ctx) : ctx.selected[0]->EventUI(i, ctx);
            if (change) {
                fileTabs[activeTab].modified = true;
                if (props[i].property) {
                    lastPropName = props[i].name; //todo: set lastPropName upon input focus as well
                    pval = props[i].property->to_arg();
                }
            }
            if (forceSameRow) {
                ImGui::TableSetColumnIndex(0);
                ImGui::Indent();
                ImGui::TableNextColumn();
            }
        }
        while (lastCat.size())
        {
            EndPropGroup(stx::join(lastCat, "."), catOpen.back());
            lastCat.pop_back();
            catOpen.pop_back();
        }

        ImGui::PopItemFlag();
        ImGui::PopID();
        ImGui::PopFont();
        ImGui::PopStyleVar();
        ImGui::EndTable();

        if (pr)
            pgHeight = ImGui::GetItemRectSize().y;
        else
            pgeHeight = ImGui::GetItemRectSize().y;

        if (props.empty()) {
            ImGui::Spacing();
            ImGui::Indent();
            ImGui::TextDisabled("%s", "Not available");
        }

        //copy changes to other widgets
        for (size_t i = 1; i < ctx.selected.size(); ++i)
        {
            auto props = pr ? ctx.selected[i]->Properties() : ctx.selected[i]->Events();
            for (auto& p : props)
            {
                if (p.name == lastPropName) {
                    auto prop = const_cast<property_base*>(p.property);
                    prop->set_from_arg(pval);
                }
            }
        }
    }
    ImGui::PopItemFlag();
}

void PropertyUI()
{
    ImGui::PushStyleColor(ImGuiCol_TableBorderLight, 0xffe5e5e5);
    ImGui::PushStyleColor(ImGuiCol_TableBorderStrong, 0xfffafafa);
    ImVec4 clr = ImGui::GetStyleColorVec4(ImGuiCol_Button);
    clr.w *= 0.5f;
    ImGui::PushStyleColor(ImGuiCol_Button, clr);
    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, { 0, 0 });

    ImGui::Begin("Events");
    if (!ctx.selected.empty())
    {
        PropertyRowsUI(0);
    }
    ImGui::End();

    ImGui::Begin("Properties");
    if (!ctx.selected.empty())
    {
        PropertyRowsUI(1);
    }
    ImGui::End();

    ImGui::PopStyleVar();
    ImGui::PopStyleColor(3);
}

void PopupUI()
{
    newFieldPopup.Draw();

    tableCols.Draw();

    comboDlg.Draw();

    messageBox.Draw();

    errorBox.Draw();

    classWizard.Draw();

    settingsDlg.Draw();

    aboutDlg.Draw();

    bindingDlg.Draw();

    horizLayout.Draw();

    inputName.Draw();
}

void Draw()
{
    if (activeTab < 0 || !fileTabs[activeTab].rootNode)
        return;
    if (reloadStyle) //eliminates flicker
        return;

    auto& tab = fileTabs[activeTab];
    auto tmpStyle = ImGui::GetStyle();
    ImGui::GetStyle() = ctx.style;
    ImGui::GetStyle().Colors[ImGuiCol_TitleBg] = ImGui::GetStyle().Colors[ImGuiCol_TitleBgActive];
    ImGui::GetStyle().ScaleAllSizes(ctx.zoomFactor);
    ImGui::PushFont(ctx.defaultStyleFont);

    ctx.appStyle = &tmpStyle;
    ctx.workingDir = u8string(u8path(tab.fname).parent_path());
    ctx.unit = tab.unit;
    ctx.modified = &tab.modified;
    tab.rootNode->Draw(ctx);

    if (ctx.isAutoSize && ctx.layoutHash != ctx.prevLayoutHash)
    {
        ctx.root->ResetLayout();
        if (ctx.rootWin)
            ctx.rootWin->HiddenFramesCannotSkipItems = 2; //flicker removal
    }

    ImGui::PopFont();
    ImGui::GetStyle() = tmpStyle;
}

std::vector<UINode*> SortSelection(const std::vector<UINode*>& sel)
{
    auto& tab = fileTabs[activeTab];
    std::vector<UINode*> allNodes = tab.rootNode->GetAllChildren();
    std::vector<UINode*> children;
    for (UINode* node : sel)
    {
        if (node == tab.rootNode.get())
            continue;
        auto it = stx::find(allNodes, node);
        if (it == allNodes.end())
            continue;
        auto ch = node->GetAllChildren();
        assert(ch.size() && ch[0] == node);
        children.insert(children.end(), ch.begin() + 1, ch.end());
    }
    std::vector<std::pair<int, UINode*>> sortedSel;
    for (UINode* node : sel)
    {
        if (node == tab.rootNode.get())
            continue;
        auto it = stx::find(allNodes, node);
        if (it == allNodes.end() || stx::find(children, node) != children.end())
            continue;
        sortedSel.push_back({ int(it - allNodes.begin()), node });
        auto ch = node->GetAllChildren();
        children.insert(children.end(), ch.begin(), ch.end());
    }

    stx::sort(sortedSel);
    allNodes.clear();
    for (const auto& sel : sortedSel)
        allNodes.push_back(sel.second);
    return allNodes;
}

//discarding result will delete widgets permanently
std::vector<std::unique_ptr<Widget>>
RemoveSelected()
{
    auto& tab = fileTabs[activeTab];
    std::vector<UINode*> sortedSel = SortSelection(ctx.selected);
    if (sortedSel.empty())
        return {};

    std::vector<std::unique_ptr<Widget>> remove;
    tab.modified = true;
    auto pi1 = tab.rootNode->FindChild(sortedSel[0]);
    for (UINode* node : sortedSel)
    {
        auto pi = tab.rootNode->FindChild(node);
        UINode* parent = pi->first;
        remove.push_back(std::move(parent->children[pi->second]));
        parent->children.erase(parent->children.begin() + pi->second);
        if (pi->second < parent->children.size() &&
            !stx::count(ctx.selected, parent->children[pi->second].get()) &&
            (parent->children[pi->second]->Behavior() & UINode::SnapSides))
        {
            Widget* child = dynamic_cast<Widget*>(remove.back().get());
            Widget* next = dynamic_cast<Widget*>(parent->children[pi->second].get());
            if (!child->sameLine && !next->nextColumn) {
                next->sameLine = false;
                next->spacing = child->spacing;
                next->indent = child->indent;
            }
            next->nextColumn += child->nextColumn;
        }
    }
    //move selection. Useful for things like menu items
    if (sortedSel.size() == 1 && pi1)
    {
        UINode* parent1 = pi1->first;
        if (pi1->second < parent1->children.size())
            ctx.selected = { parent1->children[pi1->second].get() };
        else if (pi1->second)
            ctx.selected = { parent1->children[pi1->second - 1].get() };
        else
            ctx.selected = { parent1 };
    }
    else
    {
        ctx.selected.clear();
    }

    return remove;
}

void Work()
{
    if (ImGui::GetTopMostAndVisiblePopupModal())
        return;

    if (initErrors != "")
    {
        errorBox.title = "Startup";
        errorBox.message = "Errors occured";
        errorBox.error = initErrors;
        errorBox.OpenPopup();
        initErrors = "";
    }
    else if (showError != "")
    {
        messageBox.title = "Error";
        messageBox.message = showError;
        messageBox.buttons = ImRad::Ok;
        messageBox.OpenPopup();
        showError = "";
    }

    if (programState == Shutdown)
    {
        CloseFile();
    }

    if (ctx.mode == UIContext::PickPoint)
    {
        ImGui::SetMouseCursor(ImGuiMouseCursor_Hand);
        glfwSetCursor(window, curCross);
        if (ImGui::IsKeyPressed(ImGuiKey_Escape))
        {
            ctx.mode = UIContext::NormalSelection;
            activeButton = "";
        }
        else if (!ImGui::GetIO().KeyCtrl)
        {
            ctx.mode = UIContext::SnapInsert;
        }
        else if (ImGui::IsMouseReleased(ImGuiMouseButton_Left) &&
            ctx.snapParent)
        {
            if (activeButton == "") {
                newNode = std::move(clipboard.back());
                clipboard.pop_back();
            }

            newNode->hasPos = 0;
            ImVec2 pos = ImGui::GetMousePos() - ctx.snapParent->cached_pos;
            if (pos.x < ctx.snapParent->cached_size.x / 2) {
                newNode->hasPos |= ImRad::AlignLeft;
                newNode->pos_x = pos.x / ctx.zoomFactor;
            }
            else {
                newNode->hasPos |= ImRad::AlignRight;
                newNode->pos_x = (pos.x - ctx.snapParent->cached_size.x) / ctx.zoomFactor;
            }
            if (pos.y < ctx.snapParent->cached_size.y / 2) {
                newNode->hasPos |= ImRad::AlignTop;
                newNode->pos_y = pos.y / ctx.zoomFactor;
            }
            else {
                newNode->hasPos |= ImRad::AlignBottom;
                newNode->pos_y = (pos.y - ctx.snapParent->cached_size.y) / ctx.zoomFactor;
            }
            ctx.selected = { newNode.get() };
            ctx.snapParent->children.push_back(std::move(newNode));
            ctx.mode = UIContext::NormalSelection;

            if (activeButton == "") {
                //push pasted widget copy to clipboard (vars may change)
                auto clone = ctx.snapParent->children.back()->Clone(ctx);
                clipboard.push_back(std::move(clone));
            }
            activeButton = "";
            fileTabs[activeTab].modified = true;
            ImGui::GetIO().MouseReleased[ImGuiMouseButton_Left] = false; //eat event
        }
    }
    else if (ctx.mode == UIContext::SnapInsert || ctx.mode == UIContext::SnapMove)
    {
        if (ImGui::IsKeyPressed(ImGuiKey_Escape))
        {
            ctx.mode = UIContext::NormalSelection;
            activeButton = "";
        }
        else if (ctx.mode == UIContext::SnapInsert && //todo: SnapMove
            ImGui::GetIO().KeyCtrl &&
            (activeButton == "" || (newNode->Behavior() & UINode::SnapSides)))
        {
            ctx.mode = UIContext::PickPoint;
        }
        else if (ImGui::IsMouseReleased(ImGuiMouseButton_Left))  //MouseReleased to avoid confusing RectSelection
        {
            if (!ctx.snapParent && ctx.mode == UIContext::SnapMove)
            {
                ctx.mode = UIContext::NormalSelection;
                ImGui::GetIO().MouseReleased[ImGuiMouseButton_Left] = false; //eat event
                return;
            }
            else if (!ctx.snapParent)
            {
                return;
            }

            int n;
            std::unique_ptr<Widget>* newNodes;
            std::vector<std::unique_ptr<Widget>> tmpMoved;
            if (ctx.mode == UIContext::SnapMove)
            {
                assert(ctx.selected.size() == 1);
                auto pinfo = fileTabs[activeTab].rootNode->FindChild(ctx.selected[0]);
                auto chinfo = ctx.selected[0]->FindChild(ctx.snapParent);
                if (chinfo) {
                    //disallow moving into its child
                    ctx.mode = UIContext::NormalSelection;
                    ImGui::GetIO().MouseReleased[ImGuiMouseButton_Left] = false; //eat event
                    return;
                }
                if (pinfo->first == ctx.snapParent && ctx.snapIndex > pinfo->second) {
                    //compensate removeSelected operation
                    --ctx.snapIndex;
                }
                tmpMoved = RemoveSelected();
                n = (int)tmpMoved.size();
                newNodes = tmpMoved.data();
            }
            else if (activeButton != "")
            {
                n = 1;
                newNodes = &newNode;
            }
            else
            {
                n = (int)clipboard.size();
                newNodes = clipboard.data();
            }

            if (n)
            {
                bool firstItem = true;
                for (size_t i = 0; i < ctx.snapIndex; ++i)
                {
                    auto* ch = ctx.snapParent->children[i].get();
                    if (!ch->hasPos && (ch->Behavior() & UINode::SnapSides))
                        firstItem = false;
                }
                newNodes[0]->sameLine = ctx.snapSameLine;
                newNodes[0]->spacing = firstItem ? 0 : 1;
                newNodes[0]->nextColumn = ctx.snapNextColumn;
                //reset hasPos, nextColumn
                for (size_t i = 0; i < n; ++i)
                {
                    newNodes[i]->hasPos = ImRad::AlignNone;
                }
                if (ctx.snapParent->ColumnCount(ctx) <= 1)
                {
                    for (size_t i = 1; i < n; ++i)
                        newNodes[i]->nextColumn = 0;
                }
            }
            if (ctx.snapIndex < ctx.snapParent->children.size())
            {
                auto& next = ctx.snapParent->children[ctx.snapIndex];
                if (ctx.snapUseNextSpacing) {
                    newNodes[0]->nextColumn = next->nextColumn;
                    newNodes[0]->spacing = next->spacing;
                    newNodes[0]->indent = next->indent;
                    next->nextColumn = 0;
                    next->spacing = 1;
                    next->indent = 0;
                }
                if (ctx.snapSetNextSameLine) {
                    next->sameLine = true;
                }
                if (next->sameLine)
                    next->indent = 0; //otherwise creates widgets overlaps
            }
            ctx.selected.clear();
            if (ctx.mode == UIContext::SnapMove || activeButton != "")
            {
                ctx.selected.push_back(newNodes[0].get());
                ctx.snapParent->children.insert(ctx.snapParent->children.begin() + ctx.snapIndex, std::move(newNodes[0]));
            }
            else
            {
                for (int i = 0; i < n; ++i)
                {
                    //paste original widgets and push cloned widgets back to the clipboard
                    //so original variables will be used in a pasted widget
                    auto wdg = newNodes[i]->Clone(ctx);
                    ctx.selected.push_back(newNodes[i].get());
                    ctx.snapParent->children.insert(ctx.snapParent->children.begin() + ctx.snapIndex + i, std::move(newNodes[i]));
                    newNodes[i] = std::move(wdg);
                }
            }
            ctx.mode = UIContext::NormalSelection;
            activeButton = "";
            fileTabs[activeTab].modified = true;
            ImGui::GetIO().MouseReleased[ImGuiMouseButton_Left] = false; //eat event
        }
    }
    else
    {
        if (ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_KeypadAdd, ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_Repeat) ||
            ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_Equal, ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_Repeat))
        {
            if (ctx.zoomFactor < 2)
                ctx.zoomFactor *= 1.2f;
        }
        if (ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_KeypadSubtract, ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_Repeat) ||
            ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_Minus, ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_Repeat))
        {
            if (ctx.zoomFactor > 0.5)
                ctx.zoomFactor /= 1.2f;
        }
        if (!ImGui::GetIO().WantTextInput)
        {
            if (ImGui::IsKeyPressed(ImGuiKey_Delete))
            {
                RemoveSelected();
            }
            if (ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_C, ImGuiInputFlags_RouteGlobal) &&
                !ctx.selected.empty() &&
                ctx.selected[0] != fileTabs[activeTab].rootNode.get())
            {
                clipboard.clear();
                bool tmp = ctx.createVars;
                ctx.createVars = false;
                auto sortedSel = SortSelection(ctx.selected);
                for (UINode* node : sortedSel)
                {
                    auto* wdg = dynamic_cast<Widget*>(node);
                    clipboard.push_back(wdg->Clone(ctx));
                }
                ctx.createVars = tmp;
            }
            if (ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_X, ImGuiInputFlags_RouteGlobal) &&
                !ctx.selected.empty() &&
                ctx.selected[0] != fileTabs[activeTab].rootNode.get())
            {
                clipboard = RemoveSelected();
            }
            if (ImGui::Shortcut(ImGuiMod_Ctrl | ImGuiKey_V, ImGuiInputFlags_RouteGlobal) &&
                clipboard.size())
            {
                activeButton = "";
                ctx.mode = UIContext::SnapInsert;
                ctx.selected = {};
            }
            if (ImGui::Shortcut(ImGuiMod_Alt | ImGuiKey_LeftArrow, ImGuiInputFlags_RouteGlobal) &&
                ctx.selected.size() == 1 &&
                (ctx.selected[0]->Behavior() & UINode::SnapSides))
            {
                auto pos = ctx.root->FindChild(ctx.selected[0]);
                if (!pos)
                    return;
                UINode* parent = pos->first;
                auto* child = parent->children[pos->second].get();
                auto* left = pos->second ? parent->children[pos->second - 1].get() : nullptr;
                auto* right = pos->second + 1 < parent->children.size() ? parent->children[pos->second + 1].get() : nullptr;
                int ncols = parent->ColumnCount(ctx);
                int col = 0;
                if (ncols >= 2) {
                    for (size_t j = 0; j <= pos->second; ++j)
                        col = (col + parent->children[j]->nextColumn) % ncols;
                }
                if (left && (left->Behavior() & UINode::SnapSides))
                {
                    if (ncols >= 2 && child->nextColumn) {
                        --child->nextColumn;
                        if (right) {
                            ++right->nextColumn;
                            right->sameLine = false;
                            right->spacing = child->spacing;
                        }
                        if (!child->nextColumn) {
                            child->sameLine = false;
                            child->spacing = 1;
                        }
                    }
                    else if (!child->sameLine) { //move to the end of previous row (same pos)
                        if (right && (ncols < 2 || !right->nextColumn)) {
                            right->sameLine = false;
                            right->spacing = child->spacing;
                        }
                        child->sameLine = true;
                        child->spacing = 1;
                    }
                    else {
                        if (ncols >= 2 && left->nextColumn) {
                            child->nextColumn = left->nextColumn;
                            child->spacing = left->spacing;
                            child->sameLine = false;
                            left->nextColumn = 0;
                            left->spacing = 1;
                            left->sameLine = true;
                        }
                        else if (!left->sameLine) {
                            child->spacing = left->spacing;
                            left->spacing = 1;
                            std::swap(child->sameLine, left->sameLine);
                        }
                        else {
                            std::swap(child->sameLine, left->sameLine);
                        }
                        auto mv = std::move(parent->children[pos->second]);
                        parent->children.erase(parent->children.begin() + pos->second);
                        parent->children.insert(parent->children.begin() + pos->second - 1, std::move(mv));
                    }
                }
            }
            if (ImGui::Shortcut(ImGuiMod_Alt | ImGuiKey_RightArrow, ImGuiInputFlags_RouteGlobal) &&
                ctx.selected.size() == 1 &&
                (ctx.selected[0]->Behavior() & UINode::SnapSides))
            {
                auto pos = ctx.root->FindChild(ctx.selected[0]);
                if (!pos)
                    return;
                UINode* parent = pos->first;
                auto* child = parent->children[pos->second].get();
                auto* right = pos->second + 1 < parent->children.size() ? parent->children[pos->second + 1].get() : nullptr;
                int ncols = parent->ColumnCount(ctx);
                int col = 0;
                if (ncols >= 2) {
                    for (size_t j = 0; j <= pos->second; ++j)
                        col = (col + parent->children[j]->nextColumn) % ncols;
                }
                if (!right || !(right->Behavior() & UINode::SnapSides))
                {
                    //just ensure a new row
                    if (child->sameLine) {
                        child->spacing = 1;
                        child->sameLine = false;
                    }
                    else if (col + 1 < ncols) {
                        child->sameLine = false;
                        child->spacing = 0;
                        ++child->nextColumn;
                    }
                }
                else
                {
                    if (child->sameLine && (ncols >= 2 && right->nextColumn)) {
                        //move to the beginning of next row (same pos)
                        child->sameLine = false;
                        child->spacing = 1;
                    }
                    else if (ncols >= 2 && right->nextColumn) {
                        ++child->nextColumn;
                        child->sameLine = false;
                        if (child->nextColumn == right->nextColumn) {
                            child->spacing = right->spacing;
                            right->spacing = 1;
                            right->sameLine = true;
                            right->nextColumn = 0;
                        }
                        else {
                            child->spacing = 0;
                            --right->nextColumn;
                        }
                    }
                    else {
                        if (ncols >= 2 && child->nextColumn) {
                            right->nextColumn = child->nextColumn;
                            right->sameLine = false;
                            right->spacing = child->spacing;
                            child->nextColumn = 0;
                            child->sameLine = true;
                            child->spacing = 1;
                        }
                        else if (!child->sameLine) {
                            right->sameLine = false;
                            right->spacing = child->spacing;
                            child->sameLine = true;
                            child->spacing = 1;
                        }
                        else {
                            right->sameLine = child->sameLine;
                            child->sameLine = true;
                        }
                        auto mv = std::move(parent->children[pos->second]);
                        parent->children.erase(parent->children.begin() + pos->second);
                        parent->children.insert(parent->children.begin() + pos->second + 1, std::move(mv));
                    }
                }
            }
        }
    }
    if (ImGui::Shortcut(ImGuiKey_F1, ImGuiInputFlags_RouteGlobal))
    {
        ShellExec(GITHUB_URL + "/wiki");
    }
}

//This writes and reads records from [Recent] section
void AddINIHandler()
{
    ImGuiSettingsHandler ini_handler;
    ini_handler.TypeName = "ImRAD";
    ini_handler.TypeHash = ImHashStr("ImRAD");
    ini_handler.ReadOpenFn = [](ImGuiContext* ctx, ImGuiSettingsHandler* handler, const char* name) -> void*
        {
            return (void*)name;
        };
    ini_handler.ReadLineFn = [](ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
        {
            if (programState != Init)
                return;
            if (!strcmp((const char*)entry, "Recent")) {
                int i;
                if (sscanf(line, "File%d=", &i) == 1) {
                    std::string fname = line + std::string_view(line).find('=') + 1;
                    if (i == 1) {
                        fileTabs.clear();
                        ActivateTab(-1);
                    }
                    std::string err;
                    DoOpenFile(fname, &err);
                    if (err != "") {
                        initErrors += u8string(u8path(fname).filename()) + "\n\t";
                        initErrors += Replace(Trim(err), "\n", "\n\t");
                        initErrors += "\n";
                    }
                }
                else if (sscanf(line, "ActiveTab=%d", &i) == 1) {
                    ActivateTab(i);
                }
            }
            else if (!strcmp((const char*)entry, "Explorer")) {
                int tmp;
                if (!strncmp(line, "Path=", 5))
                    explorerPath = line + 5;
                else if (sscanf(line, "Filter=%d", &explorerFilter) == 1)
                    line;
                else if (sscanf(line, "SortColumn=%hd", &explorerSorting.ColumnIndex) == 1)
                    line;
                else if (sscanf(line, "SortDir=%d", &tmp) == 1)
                    explorerSorting.SortDirection = (ImGuiSortDirection)tmp;
            }
            else if (!strcmp((const char*)entry, "UI")) {
                if (!strncmp(line, "FontName=", 9))
                    uiFontName = line + 9;
                else if (!strncmp(line, "FontSize=", 9))
                    uiFontSize = (float)std::atof(line + 9);
                else if (!strncmp(line, "PgFontName=", 11))
                    pgFontName = line + 11;
                else if (!strncmp(line, "PgbFontName=", 12))
                    pgbFontName = line + 12;
                else if (!strncmp(line, "PgFontSize=", 11))
                    pgFontSize = (float)std::atof(line + 11);
            }
        };
    ini_handler.ApplyAllFn = nullptr;
    ini_handler.WriteAllFn = [](ImGuiContext* ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
        {
            buf->append("[ImRAD][Recent]\n");
            int active = activeTab;
            int count = 0;
            for (int i = 0; i < fileTabs.size(); ++i) {
                if (fileTabs[i].fname != "") {
                    buf->appendf("File%d=%s\n", i + 1, fileTabs[i].fname.c_str());
                    ++count;
                }
                else if (i < active)
                    --active;
            }
            if (active == count)
                active = count - 1;
            buf->appendf("ActiveTab=%d\n", active);
            buf->append("\n");

            buf->append("[ImRAD][Explorer]\n");
            buf->appendf("Path=%s\n", explorerPath.c_str());
            buf->appendf("Filter=%d\n", explorerFilter);
            buf->appendf("SortColumn=%d\n", explorerSorting.ColumnIndex);
            buf->appendf("SortDir=%d\n", explorerSorting.SortDirection);
            buf->append("\n");

            buf->append("[ImRAD][UI]\n");
            buf->appendf("FontName=%s\n", uiFontName.c_str());
            buf->appendf("FontSize=%f\n", uiFontSize);
            buf->appendf("PgFontName=%s\n", pgFontName.c_str());
            buf->appendf("PgbFontName=%s\n", pgbFontName.c_str());
            buf->appendf("PgFontSize=%f\n", pgFontSize);
            buf->append("\n");
        };
    ImGui::GetCurrentContext()->SettingsHandlers.push_back(ini_handler);
}

std::string GetRootPath()
{
#ifdef WIN32
    wchar_t tmp[1024];
    int n = GetModuleFileNameW(NULL, tmp, (int)std::size(tmp));
    return generic_u8string(fs::path(tmp).parent_path()); //need generic for CMake template path substitutions
    //test utf8 path: return u8string(L"c:/work/de�o/latest");
#elif __APPLE__
    char executablePath[PATH_MAX];
    uint32_t len = PATH_MAX;
    if (_NSGetExecutablePath(executablePath, &len) != 0) {
        std::cerr << "Error: _NSGetExecutablePath failed, fallback to current directory\n";
        return u8string(fs::current_path());
    }
    try {
        fs::path pexe = fs::canonical(u8path(executablePath));
        return u8string(pexe.parent_path());
    } catch (const std::exception& e) {
        std::cerr << "Error: fs::canonical failed: " << e.what() << ", fallback to current directory\n";
        return u8string(fs::current_path());
    }
#else
    fs::path pexe = fs::canonical("/proc/self/exe");
    return u8string(pexe.parent_path());
#endif
}

#if (WIN32) && !(__MINGW32__)
int WINAPI wWinMain(
    HINSTANCE   hInstance,
    HINSTANCE   hPrevInstance,
    PWSTR       lpCmdLine,
    int         nCmdShow
)
{
#else
int main(int argc, const char* argv[])
{
#endif
    rootPath = GetRootPath();

#ifdef _DEBUG
    std::filesystem::path currPath = std::filesystem::current_path(); // 注意：这是工作目录
    //auto pth_img = currPath.parent_path().parent_path() / std::filesystem::path("data/img") / std::format("{}.txt", m5);
    //auto pth_json = currPath.parent_path().parent_path() / std::filesystem::path("data/json") / std::format("{}.json", m5);
#else
    std::filesystem::path currPath = std::filesystem::current_path(); // 注意：这是可执行文件所在目录
#endif // DEBUG

    SetConsoleCP(CP_UTF8);
    SetConsoleOutputCP(CP_UTF8);
    setlocale(LC_ALL, "en_US.UTF-8");

    g_currPath = currPath;


    //E:\huggingface\ColorTextEditorV2\build\x64\Release\WeChatOcrCpp.dll

    

    
    g_wechatocr_dll = LoadLibrary(Constant::pth_wechatocr_dll.wstring().c_str()); // "E:\\huggingface\\ColorTextEditorV2\\build\\x64\\Release\\WeChatOcrCpp.dll"

    rec = (FunctionPtr)GetProcAddress(g_wechatocr_dll, "rec");

    std::string result = rec("E:\\huggingface\\imradv3\\data\\t2.jpg");

    json jsn = json::parse(result);
    std::string jsn_str = jsn.dump(4);

    // Setup window
    glfwSetErrorCallback(glfw_error_callback);
    if (!glfwInit())
        return 1;

    // Decide GL+GLSL versions
#if defined(IMGUI_IMPL_OPENGL_ES2)
    // GL ES 2.0 + GLSL 100
    const char* glsl_version = "#version 100";
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
    glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
#elif defined(__APPLE__)
    // GL 3.2 + GLSL 150
    const char* glsl_version = "#version 150";
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // Required on Mac
#else
    // GL 3.0 + GLSL 130
    const char* glsl_version = "#version 130";
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
    //glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
    //glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // 3.0+ only
#endif

    // Initialize the native file dialog
    NFD_Init();

    // Create window with graphics context
    window = glfwCreateWindow(1280, 720, VER_STR.c_str(), NULL, NULL);
    if (window == NULL)
        return 1;
    GLFWimage icons[2];
    icons[0].pixels = stbi_load((rootPath + "/style/icon-40.png").c_str(), &icons[0].width, &icons[0].height, 0, 4);
    icons[1].pixels = stbi_load((rootPath + "/style/icon-100.png").c_str(), &icons[1].width, &icons[1].height, 0, 4);
    if (icons[0].pixels && icons[1].pixels)
        glfwSetWindowIcon(window, 2, icons);
    stbi_image_free(icons[0].pixels);
    stbi_image_free(icons[1].pixels);
    glfwMakeContextCurrent(window);
    glfwSwapInterval(1); // Enable vsync
    glfwMaximizeWindow(window);
    curCross = glfwCreateStandardCursor(GLFW_CROSSHAIR_CURSOR);
    //curWait = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
    curWait = glfwCreateCursor(CUSTOM_BUSY_CURSOR);

    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    auto& g = *ImGui::GetCurrentContext();
    g.ConfigNavWindowingKeyNext = g.ConfigNavWindowingKeyPrev = ImGuiKey_None; //disable imgui ctrl+tab menu
    ImGui::GetIO().IniFilename = INI_FILE_NAME;
    AddINIHandler();
    ImGuiIO& io = ImGui::GetIO();
    io.UserData = &ioUserData;
    io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls

    // Setup Platform/Renderer backends
    ImGui_ImplGlfw_InitForOpenGL(window, true);
    ImGui_ImplOpenGL3_Init(glsl_version);
    const ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    ctx.dashTexId = ImRad::LoadTextureFromFile(
        (rootPath + "/style/dash.png").c_str(), GL_NEAREST, GL_NEAREST, GL_REPEAT, GL_REPEAT).id;

    GetStyles();
    programState = (ProgramState)-1;
    bool lastVisible = true;


    // 创建布局，初始分割比例为0.5（中间）
    SimpleLayout leftRightLayout(0.2f);

    TextEditor editorr;
    std::string s("A.磷酸戊糖位于螺旋外侧，碱基位于内侧");
    //editorr.SetText(s);


    while (true)
    {
        if (programState == -1)
        {
            programState = Init;
        }
        else if (programState == Init)
        {
            programState = Run;
        }
        else if (programState == Shutdown)
        {
            if (fileTabs.empty()) //Work() will close the tabs
                break;
        }
        else if (programState == Run && glfwWindowShouldClose(window))
        {
            if (ImGui::GetTopMostAndVisiblePopupModal())
            {
                glfwSetWindowShouldClose(window, false);
            }
            else
            {
                programState = Shutdown;
                ctx.mode = UIContext::NormalSelection;
                //save state before files close
                ImGui::SaveIniSettingsToDisk(ImGui::GetIO().IniFilename);
                ImGui::GetIO().IniFilename = nullptr;
            }
        }

        //font loading must be called before NewFrame
        LoadStyle();

        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        glfwPollEvents();

        // Start the Dear ImGui frame
        ImGui_ImplOpenGL3_NewFrame();
        ImGui_ImplGlfw_NewFrame();
        ImGui::NewFrame();

        bool visible = glfwGetWindowAttrib(window, GLFW_FOCUSED);
        if (visible && !lastVisible)
            ReloadFile();
        lastVisible = visible;


        // 设置左右窗口的内容
        leftRightLayout.SetLeftWindow([&editorr]() {
            //ImGui::Text("这是左窗口");
            ExplorerUI(&editorr);
        });

        leftRightLayout.SetRightWindow([&editorr]() {
            ImFont* font = NULL;
            ImFontAtlas* atlas = ImGui::GetIO().Fonts;
            for (ImFont* ft : atlas->Fonts) {
                // font->ConfigData ? font->ConfigData[0].Name : "", font->FontSize, font->Glyphs.Size, font->ConfigDataCount
                const char* fontName = ft->ConfigData ? ft->ConfigData[0].Name : "";
                if (strcmp(fontName, "simhei") == 0) {
                    font = ft;
                    break;
                }
            }
            ImGui::Button("\xef\x8b\xb9" "##ego");  // 默认是图标字体
            ImGui::PushFont(font);    // 切换中文字体
            editorr.Render("Editor");
            ImGui::PopFont();
        });

        leftRightLayout.Draw();

        //DockspaceUI();
        //ToolbarUI();
        //TabsUI();
        //HierarchyUI();
        //ExplorerUI();
        //PropertyUI();
        //PopupUI();
        //Work();
        Draw(); //last

        //ImGui::ShowDemoWindow();

        // Rendering
        ImGui::Render();
        int display_w, display_h;
        glfwGetFramebufferSize(window, &display_w, &display_h);
        glViewport(0, 0, display_w, display_h);
        glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
        glClear(GL_COLOR_BUFFER_BIT);
        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
        glfwSwapBuffers(window);
    }

    // Cleanup
    NFD_Quit();

    ImGui_ImplOpenGL3_Shutdown();
    ImGui_ImplGlfw_Shutdown();
    ImGui::DestroyContext();

    glfwDestroyCursor(curCross);
    glfwDestroyCursor(curWait);
    glfwDestroyWindow(window);
    glfwTerminate();

    return 0;
}