WFileWidget.cpp

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#include "WFileWidget.h"
 
WFileWidget::WFileWidget(dyno::FBase* field)
{
    layout = this->setLayout(std::make_unique<Wt::WVBoxLayout>());
    layout->setContentsMargins(0, 0, 0, 0);
    //layout->setSpacing(0);
 
    setValue(field);
    mfield = field;
 
    upload = layout->addWidget(std::make_unique<Wt::WFileUpload>());
    //uploadButton = layout->addWidget(std::make_unique<Wt::WPushButton>("Upload"));
 
    upload->setMultiple(true);
 
    mfilename->changed().connect(this, &WFileWidget::updateField);
    //uploadButton->checked().connect(upload, &Wt::WFileUpload::upload);
    //uploadButton->checked().connect(uploadButton, &Wt::WPushButton::disable);
    upload->changed().connect(upload, &Wt::WFileUpload::upload);
    upload->uploaded().connect(this, &WFileWidget::uploadFile);
    upload->fileTooLarge().connect(this, &WFileWidget::fileTooLarge);
}
 
WFileWidget::~WFileWidget()
{
}
 
void WFileWidget::uploadFile()
{
    if (upload->uploadedFiles().size() > 0)
    {
        for (const auto& file : upload->uploadedFiles())
        {
            Wt::log("info") << file.spoolFileName();
            std::string savePath = getAssetPath() + "WebUploadFiles/" + file.clientFileName();
            std::string tempFilePath = file.spoolFileName();
            std::ifstream src(tempFilePath, std::ios::binary);
            std::ofstream dst(savePath, std::ios::binary);
 
            dst << src.rdbuf();
 
            if (dst)
            {
                Wt::WMessageBox::show("Success", "File save path WebUploadFiles/.", Wt::StandardButton::Ok);
            }
            else
            {
                Wt::WMessageBox::show("Error", "File save failure.", Wt::StandardButton::Ok);
            }
 
            src.close();
            dst.close();
        }
    }
}
 
void WFileWidget::fileTooLarge()
{
    Wt::WMessageBox::show("Error", "File Too Large!", Wt::StandardButton::Ok);
}
 
std::string WFileWidget::shortFilePath(std::string str)
{
    std::string removeStr = getAssetPath();
    size_t pos = str.find(removeStr);
    while (pos != std::string::npos)
    {
        str.erase(pos, removeStr.length());
        pos = str.find(removeStr);
    }
    return str;
}
 
bool WFileWidget::hasFile(std::string path)
{
    if (std::filesystem::exists(path) && std::filesystem::is_regular_file(path))
    {
        return true;
    }
    else
    {
        return false;
    }
    return false;
}
 
void WFileWidget::setValue(dyno::FBase* field)
{
    dyno::FVar<dyno::FilePath>* f = TypeInfo::cast<dyno::FVar<dyno::FilePath>>(field);
    if (f == nullptr)
        return;
 
    mfilename = layout->addWidget(std::make_unique<Wt::WLineEdit>());
    std::string filepath = shortFilePath(f->getValue().string());
    mfilename->setText(filepath);
}
 
void WFileWidget::updateField()
{
    auto f = TypeInfo::cast<dyno::FVar<dyno::FilePath>>(mfield);
    if (f == nullptr)
    {
        return;
    }
    auto path = f->getValue();
    std::string filePath = getAssetPath() + mfilename->text().toUTF8();
    if (hasFile(filePath))
    {
        path.set_path(filePath);
        f->setValue(path);
        f->update();
        changeValue_.emit(1);
    }
    else
    {
        Wt::WMessageBox::show("Error", "file does not exist!", Wt::StandardButton::Ok);
        return;
    }
 
}