source: trunk/src/gui/kernel/qclipboard_mac.cpp@ 451

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information ([email protected])
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qclipboard.h"
#include "qapplication.h"
#include "qbitmap.h"
#include "qdatetime.h"
#include "qdebug.h"
#include "qapplication_p.h"
#include <private/qt_mac_p.h>
#include "qevent.h"
#include "qurl.h"
#include <stdlib.h>
#include <string.h>

QT_BEGIN_NAMESPACE

QT_USE_NAMESPACE

/*****************************************************************************
  QClipboard debug facilities
 *****************************************************************************/
//#define DEBUG_PASTEBOARD

#ifndef QT_NO_CLIPBOARD

/*****************************************************************************
  QClipboard member functions for mac.
 *****************************************************************************/

static QMacPasteboard *qt_mac_pasteboards[2] = {0, 0};

static inline QMacPasteboard *qt_mac_pasteboard(QClipboard::Mode mode)
{
    Q_ASSERT(mode == QClipboard::Clipboard || mode == QClipboard::FindBuffer);
    if (mode == QClipboard::Clipboard)
        return qt_mac_pasteboards[0];
    else
        return qt_mac_pasteboards[1];
}

static void qt_mac_cleanupPasteboard() {
    delete qt_mac_pasteboards[0];
    delete qt_mac_pasteboards[1];
    qt_mac_pasteboards[0] = 0;
    qt_mac_pasteboards[1] = 0;
}

static bool qt_mac_updateScrap(QClipboard::Mode mode)
{
    if(!qt_mac_pasteboards[0]) {
        qt_mac_pasteboards[0] = new QMacPasteboard(kPasteboardClipboard, QMacPasteboardMime::MIME_CLIP);
        qt_mac_pasteboards[1] = new QMacPasteboard(kPasteboardFind, QMacPasteboardMime::MIME_CLIP);
        qAddPostRoutine(qt_mac_cleanupPasteboard);
        return true;
    }
    return qt_mac_pasteboard(mode)->sync();
}

void QClipboard::clear(Mode mode)
{
    if (!supportsMode(mode))
        return;
    qt_mac_updateScrap(mode);
    qt_mac_pasteboard(mode)->clear();
    setMimeData(0, mode);
}

void QClipboard::ownerDestroyed()
{
}


void QClipboard::connectNotify(const char *signal)
{
    Q_UNUSED(signal);
}

bool QClipboard::event(QEvent *e)
{
    if(e->type() != QEvent::Clipboard)
        return QObject::event(e);

    if (qt_mac_updateScrap(QClipboard::Clipboard)) {
        emitChanged(QClipboard::Clipboard);
    }

    if (qt_mac_updateScrap(QClipboard::FindBuffer)) {
        emitChanged(QClipboard::FindBuffer);
    }

    return QObject::event(e);
}

const QMimeData *QClipboard::mimeData(Mode mode) const
{
    if (!supportsMode(mode))
        return 0;
    qt_mac_updateScrap(mode);
    return qt_mac_pasteboard(mode)->mimeData();
}

void QClipboard::setMimeData(QMimeData *src, Mode mode)
{
    if (!supportsMode(mode))
        return;
    qt_mac_updateScrap(mode);
    qt_mac_pasteboard(mode)->setMimeData(src);
    emitChanged(mode);
}

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

bool QClipboard::ownsMode(Mode mode) const
{
    Q_UNUSED(mode);
    return false;
}

#endif // QT_NO_CLIPBOARD

/*****************************************************************************
   QMacPasteboard code
*****************************************************************************/

QMacPasteboard::QMacPasteboard(PasteboardRef p, uchar mt)
{
    mac_mime_source = false;
    mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
    paste = p;
    CFRetain(paste);
}

QMacPasteboard::QMacPasteboard(uchar mt)
{
    mac_mime_source = false;
    mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
    paste = 0;
    OSStatus err = PasteboardCreate(0, &paste);
    if(err == noErr) {
        PasteboardSetPromiseKeeper(paste, promiseKeeper, this);
    } else {
        qDebug("PasteBoard: Error creating pasteboard: [%d]", (int)err);
    }
}

QMacPasteboard::QMacPasteboard(CFStringRef name, uchar mt)
{
    mac_mime_source = false;
    mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
    paste = 0;
    OSStatus err = PasteboardCreate(name, &paste);
    if(err == noErr) {
        PasteboardSetPromiseKeeper(paste, promiseKeeper, this);