FtpItemProvider.cpp Example File

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    #include "FtpItemProvider.hpp"
    #include "FtpItem.hpp"
    #include "FtpListItem.hpp"

    #include <bb/cascades/Image>
    #include <bb/cascades/ListView>
    #include <bb/cascades/StandardListItem>

    #include <QtCore/QUrl>

    using namespace bb::cascades;

    FtpItemProvider::FtpItemProvider(QObject *parent)
        : ListItemProvider(parent), m_fileImage(QUrl("asset:///images/file.png")), m_folderImage(QUrl("asset:///images/folder.png"))
    {
    }

    bb::cascades::VisualNode* FtpItemProvider::createItem(bb::cascades::ListView*, const QString&)
    {
        // Return an instance of our custom FtpListItem class
        return new FtpListItem();
    }

    /**
     * This methods converts a numeric file/directory size into a human readable string
     * that includes a unit.
     */
    static QString humanReadableFileSize(qint64 size)
    {
        const QStringList units = QStringList() << QObject::tr("KB")
                << QObject::tr("MB")
                << QObject::tr("GB")
                << QObject::tr("TB");
        QString unit(QObject::tr("bytes"));
        QStringListIterator unitIterator(units);

        float num = size;
        while (num >= 1024 && unitIterator.hasNext()) {
            unit = unitIterator.next();
            num /= 1024.0f;
        }
        if (num == size) {
            return QObject::tr("%1 %2", "<size> <unit>").arg(size).arg(unit);
        } else {
            return QObject::tr("%1 %2", "<size> <unit>").arg(QString::number(num, 'f', 2)).arg(unit);
        }
    }

    void FtpItemProvider::updateItem(bb::cascades::ListView*, bb::cascades::VisualNode *control, const QString&,
                                    const QVariantList&, const QVariant &data)
    {
        // Extract the FtpItem object from the model data
        const FtpItem item = data.value<FtpItem>();

        // Cast the generic control to the specific subclass (the one we returned in createItem() above)
        FtpListItem * guiItem = qobject_cast<FtpListItem*>(control);

        // Fill the ListView item with the data from the data model
        guiItem->setTitleText(item.fileName);

        const QString commonAttributes = tr("Owner: %1, Group: %2, Last Modified: %3").arg(item.owner).arg(item.group).arg(item.time.toString());
        if (item.isDirectory) {
            guiItem->setImage(m_folderImage);
            guiItem->setStatusText(commonAttributes);
        } else {
            guiItem->setImage(m_fileImage);
            guiItem->setStatusText(tr("Size: %1, %2)").arg(humanReadableFileSize(item.fileSize)).arg(commonAttributes));
        }
    }