WebFileDialog.cpp

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#include "WebFileDialog.h"
 
#ifdef EE_PLATFORM_WEB
 
#include <ImGuiFileDialog/ImGuiFileDialog.h>
 
namespace Elevate
{
    std::string WebFileDialog::ConvertFilters(const std::vector<std::string>& filters) const
    {
        size_t totalSize = 0;
        for (const auto& f : filters)
        {
            totalSize += f.length();
        }
 
        std::string filterString;
        filterString.reserve(totalSize);
 
        for (size_t i = 0; i < filters.size(); ++i)
        {
            filterString += filters[i].substr(1, filters[i].length() - 1); // Remove the leading "*""
            if (i < filters.size() - 1)
            {
                filterString += ",";
            }
        }
 
        return filterString;
    }
 
 
    void WebFileDialog::OpenFile(const std::string& title, const std::string& defaultPathOrFile, const std::vector<std::string>& filters, const std::string& filterDescription, bool allowMultiple)
    {
        IGFD::FileDialogConfig config;
        config.path = defaultPathOrFile;
        config.flags = ImGuiFileDialogFlags_Modal;
        m_titleCache = title;
        ImGuiFileDialog::Instance()->OpenDialog(title, title, ConvertFilters(filters).c_str(), config);
        SetWaitingForFilePath();
    }
 
    void WebFileDialog::SaveFile(const std::string& title, const std::string& defaultPathOrFile, const std::vector<std::string>& filters, const std::string& filterDescription)
    {
        IGFD::FileDialogConfig config;
        config.path = defaultPathOrFile;
        config.flags = ImGuiFileDialogFlags_Modal;
        m_titleCache = title;
        ImGuiFileDialog::Instance()->OpenDialog(title, title, ConvertFilters(filters).c_str(), config);
        SetWaitingForFilePath();
    }
 
    void WebFileDialog::SelectFolder(const std::string& title, const std::string& defaultPath)
    {
        IGFD::FileDialogConfig config;
        config.path = defaultPath;
        config.flags = ImGuiFileDialogFlags_Modal;
        m_titleCache = title;
        ImGuiFileDialog::Instance()->OpenDialog(title, title, "", config);
        SetWaitingForDirPath();
    }
 
    bool WebFileDialog::DisplayAndGetResult(std::string& outPath)
    {
        // Display
        if (ImGuiFileDialog::Instance()->Display(m_titleCache, ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_Modal, ImVec2(600, 400))) {
            if (ImGuiFileDialog::Instance()->IsOk()) { // action if OK
                if (m_waitiingForFilePath)
                {
                    SetResult(ImGuiFileDialog::Instance()->GetFilePathName());
                }
                else if (m_waitingForDirPath)
                {
                    SetResult(ImGuiFileDialog::Instance()->GetCurrentPath());
                }
            }
            // close
            ImGuiFileDialog::Instance()->Close();
        }
 
        // Return result if possible
        if (HasResult())
        {
            m_isActive = false;
            outPath = ConsumeResult();
            return true;
        }
        return false;
    }
 
    void WebFileDialog::SetWaitingForDirPath()
    {
        m_isActive = true;
        m_waitingForDirPath = true;
        m_waitiingForFilePath = false;
    }
 
    void WebFileDialog::SetWaitingForFilePath()
    {
        m_isActive = true;
        m_waitingForDirPath = false;
        m_waitiingForFilePath = true;
    }
}
 
#endif