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#include "qwaylandclipboard_p.h"
#include "qwaylanddisplay_p.h"
#include "qwaylandinputdevice_p.h"
#include "qwaylanddataoffer_p.h"
#include "qwaylanddatasource_p.h"
#include "qwaylanddatadevice_p.h"

QT_BEGIN_NAMESPACE

namespace QtWaylandClient {

QWaylandClipboard::QWaylandClipboard(QWaylandDisplay *display)
    : mDisplay(display)
{
}

QWaylandClipboard::~QWaylandClipboard()
{
}

QMimeData *QWaylandClipboard::mimeData(QClipboard::Mode mode)
{
    if (mode != QClipboard::Clipboard)
        return &m_emptyData;

    QWaylandInputDevice *inputDevice = mDisplay->currentInputDevice();
    if (!inputDevice || !inputDevice->dataDevice())
        return &m_emptyData;

    QWaylandDataSource *source = inputDevice->dataDevice()->selectionSource();
    if (source) {
        return source->mimeData();
    }

    if (inputDevice->dataDevice()->selectionOffer())
        return inputDevice->dataDevice()->selectionOffer()->mimeData();

    return &m_emptyData;
}

void QWaylandClipboard::setMimeData(QMimeData *data, QClipboard::Mode mode)
{
    if (mode != QClipboard::Clipboard)
        return;

    QWaylandInputDevice *inputDevice = mDisplay->currentInputDevice();
    if (!inputDevice || !inputDevice->dataDevice())
        return;

    static const QString plain = QStringLiteral("text/plain");
    static const QString utf8 = QStringLiteral("text/plain;charset=utf-8");
    if (data && data->hasFormat(plain) && !data->hasFormat(utf8))
        data->setData(utf8, data->data(plain));
    inputDevice->dataDevice()->setSelectionSource(data ? new QWaylandDataSource(mDisplay->dndSelectionHandler(), data) : nullptr);

    emitChanged(mode);
}

bool QWaylandClipboard::supportsMode(QClipboard::Mode mode) const
{
    return mode == QClipboard::Clipboard;
}

bool QWaylandClipboard::ownsMode(QClipboard::Mode mode) const
{
    if (mode != QClipboard::Clipboard)
        return false;

    QWaylandInputDevice *inputDevice = mDisplay->currentInputDevice();
    if (!inputDevice || !inputDevice->dataDevice())
        return false;

    return inputDevice->dataDevice()->selectionSource() != nullptr;
}

}

QT_END_NAMESPACE