/****************************************************************************
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** this package.
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****************************************************************************/

#include "qclipboard.h"

#ifndef QT_NO_CLIPBOARD

#include "qmimedata.h"
#include "qapplication.h"

QT_BEGIN_NAMESPACE

QT_USE_NAMESPACE


class QClipboardData
{
public:
    QClipboardData();
   ~QClipboardData();

    void setSource(QMimeData* s)
    {
        if (s == src)
            return;
        delete src;
        src = s;
    }
    QMimeData* source()
        { return src; }

    void clear();

private:
    QMimeData* src;
};

QClipboardData::QClipboardData()
{
    src = 0;
}

QClipboardData::~QClipboardData()
{
    delete src;
}

void QClipboardData::clear()
{
    delete src;
    src = 0;
}


static QClipboardData *internalCbData = 0;

static void cleanupClipboardData()
{
    delete internalCbData;
    internalCbData = 0;
}

static QClipboardData *clipboardData()
{
    if (internalCbData == 0) {
        internalCbData = new QClipboardData;
        qAddPostRoutine(cleanupClipboardData);
    }
    return internalCbData;
}


void QClipboard::clear(Mode mode)
{
    setText(QString(), mode);
}


bool QClipboard::event(QEvent *e)
{
    return QObject::event(e);
}

const QMimeData* QClipboard::mimeData(Mode mode) const
{
    if (mode != Clipboard) return 0;

    QClipboardData *d = clipboardData();
    return d->source();
}

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

    QClipboardData *d = clipboardData();

    d->setSource(src);

    emitChanged(QClipboard::Clipboard);
}

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

bool QClipboard::ownsMode(Mode mode) const
{
    if (mode == Clipboard)
        qWarning("QClipboard::ownsClipboard: UNIMPLEMENTED!");
    return false;
}

void QClipboard::connectNotify( const char * )
{
}

void QClipboard::ownerDestroyed()
{
}

#endif // QT_NO_CLIPBOARD

QT_END_NAMESPACE