util/src/gui/kernel/qclipboard_mac.cpp
changeset 7 f7bc934e204c
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3:41300fa6a67c 7:f7bc934e204c
       
     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtGui module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "qclipboard.h"
       
    43 #include "qapplication.h"
       
    44 #include "qbitmap.h"
       
    45 #include "qdatetime.h"
       
    46 #include "qdebug.h"
       
    47 #include "qapplication_p.h"
       
    48 #include <private/qt_mac_p.h>
       
    49 #include "qevent.h"
       
    50 #include "qurl.h"
       
    51 #include <stdlib.h>
       
    52 #include <string.h>
       
    53 #include "qt_cocoa_helpers_mac_p.h"
       
    54 
       
    55 QT_BEGIN_NAMESPACE
       
    56 
       
    57 QT_USE_NAMESPACE
       
    58 
       
    59 /*****************************************************************************
       
    60   QClipboard debug facilities
       
    61  *****************************************************************************/
       
    62 //#define DEBUG_PASTEBOARD
       
    63 
       
    64 #ifndef QT_NO_CLIPBOARD
       
    65 
       
    66 /*****************************************************************************
       
    67   QClipboard member functions for mac.
       
    68  *****************************************************************************/
       
    69 
       
    70 static QMacPasteboard *qt_mac_pasteboards[2] = {0, 0};
       
    71 
       
    72 static inline QMacPasteboard *qt_mac_pasteboard(QClipboard::Mode mode)
       
    73 {
       
    74     Q_ASSERT(mode == QClipboard::Clipboard || mode == QClipboard::FindBuffer);
       
    75     if (mode == QClipboard::Clipboard)
       
    76         return qt_mac_pasteboards[0];
       
    77     else
       
    78         return qt_mac_pasteboards[1];
       
    79 }
       
    80 
       
    81 static void qt_mac_cleanupPasteboard() {
       
    82     delete qt_mac_pasteboards[0];
       
    83     delete qt_mac_pasteboards[1];
       
    84     qt_mac_pasteboards[0] = 0;
       
    85     qt_mac_pasteboards[1] = 0;
       
    86 }
       
    87 
       
    88 static bool qt_mac_updateScrap(QClipboard::Mode mode)
       
    89 {
       
    90     if(!qt_mac_pasteboards[0]) {
       
    91         qt_mac_pasteboards[0] = new QMacPasteboard(kPasteboardClipboard, QMacPasteboardMime::MIME_CLIP);
       
    92         qt_mac_pasteboards[1] = new QMacPasteboard(kPasteboardFind, QMacPasteboardMime::MIME_CLIP);
       
    93         qAddPostRoutine(qt_mac_cleanupPasteboard);
       
    94         return true;
       
    95     }
       
    96     return qt_mac_pasteboard(mode)->sync();
       
    97 }
       
    98 
       
    99 void QClipboard::clear(Mode mode)
       
   100 {
       
   101     if (!supportsMode(mode))
       
   102         return;
       
   103     qt_mac_updateScrap(mode);
       
   104     qt_mac_pasteboard(mode)->clear();
       
   105     setMimeData(0, mode);
       
   106 }
       
   107 
       
   108 void QClipboard::ownerDestroyed()
       
   109 {
       
   110 }
       
   111 
       
   112 
       
   113 void QClipboard::connectNotify(const char *signal)
       
   114 {
       
   115     Q_UNUSED(signal);
       
   116 }
       
   117 
       
   118 bool QClipboard::event(QEvent *e)
       
   119 {
       
   120     if(e->type() != QEvent::Clipboard)
       
   121         return QObject::event(e);
       
   122 
       
   123     if (qt_mac_updateScrap(QClipboard::Clipboard)) {
       
   124         emitChanged(QClipboard::Clipboard);
       
   125     }
       
   126 
       
   127     if (qt_mac_updateScrap(QClipboard::FindBuffer)) {
       
   128         emitChanged(QClipboard::FindBuffer);
       
   129     }
       
   130 
       
   131     return QObject::event(e);
       
   132 }
       
   133 
       
   134 const QMimeData *QClipboard::mimeData(Mode mode) const
       
   135 {
       
   136     if (!supportsMode(mode))
       
   137         return 0;
       
   138     qt_mac_updateScrap(mode);
       
   139     return qt_mac_pasteboard(mode)->mimeData();
       
   140 }
       
   141 
       
   142 void QClipboard::setMimeData(QMimeData *src, Mode mode)
       
   143 {
       
   144     if (!supportsMode(mode))
       
   145         return;
       
   146     qt_mac_updateScrap(mode);
       
   147     qt_mac_pasteboard(mode)->setMimeData(src);
       
   148     emitChanged(mode);
       
   149 }
       
   150 
       
   151 bool QClipboard::supportsMode(Mode mode) const
       
   152 {
       
   153     return (mode == Clipboard || mode == FindBuffer);
       
   154 }
       
   155 
       
   156 bool QClipboard::ownsMode(Mode mode) const
       
   157 {
       
   158     Q_UNUSED(mode);
       
   159     return false;
       
   160 }
       
   161 
       
   162 #endif // QT_NO_CLIPBOARD
       
   163 
       
   164 /*****************************************************************************
       
   165    QMacPasteboard code
       
   166 *****************************************************************************/
       
   167 
       
   168 QMacPasteboard::QMacPasteboard(PasteboardRef p, uchar mt)
       
   169 {
       
   170     mac_mime_source = false;
       
   171     mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
       
   172     paste = p;
       
   173     CFRetain(paste);
       
   174 }
       
   175 
       
   176 QMacPasteboard::QMacPasteboard(uchar mt)
       
   177 {
       
   178     mac_mime_source = false;
       
   179     mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
       
   180     paste = 0;
       
   181     OSStatus err = PasteboardCreate(0, &paste);
       
   182     if(err == noErr) {
       
   183         PasteboardSetPromiseKeeper(paste, promiseKeeper, this);
       
   184     } else {
       
   185         qDebug("PasteBoard: Error creating pasteboard: [%d]", (int)err);
       
   186     }
       
   187 }
       
   188 
       
   189 QMacPasteboard::QMacPasteboard(CFStringRef name, uchar mt)
       
   190 {
       
   191     mac_mime_source = false;
       
   192     mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
       
   193     paste = 0;
       
   194     OSStatus err = PasteboardCreate(name, &paste);
       
   195     if(err == noErr) {
       
   196         PasteboardSetPromiseKeeper(paste, promiseKeeper, this);
       
   197     } else {
       
   198         qDebug("PasteBoard: Error creating pasteboard: %s [%d]", QCFString::toQString(name).toLatin1().constData(), (int)err);
       
   199     }
       
   200 }
       
   201 
       
   202 QMacPasteboard::~QMacPasteboard()
       
   203 {
       
   204     // commit all promises for paste after exit close
       
   205     for (int i = 0; i < promises.count(); ++i) {
       
   206         const Promise &promise = promises.at(i);
       
   207         QCFString flavor = QCFString(promise.convertor->flavorFor(promise.mime));
       
   208         promiseKeeper(paste, (PasteboardItemID)promise.itemId, flavor, this);
       
   209     }
       
   210 
       
   211     if(paste)
       
   212         CFRelease(paste);
       
   213 }
       
   214 
       
   215 PasteboardRef
       
   216 QMacPasteboard::pasteBoard() const
       
   217 {
       
   218     return paste;
       
   219 }
       
   220 
       
   221 OSStatus QMacPasteboard::promiseKeeper(PasteboardRef paste, PasteboardItemID id, CFStringRef flavor, void *_qpaste)
       
   222 {
       
   223     QMacPasteboard *qpaste = (QMacPasteboard*)_qpaste;
       
   224     const long promise_id = (long)id;
       
   225 
       
   226     // Find the kept promise
       
   227     const QString flavorAsQString = QCFString::toQString(flavor);
       
   228     QMacPasteboard::Promise promise;
       
   229     for (int i = 0; i < qpaste->promises.size(); i++){
       
   230         QMacPasteboard::Promise tmp = qpaste->promises[i];
       
   231         if (tmp.itemId == promise_id && tmp.convertor->canConvert(tmp.mime, flavorAsQString)){
       
   232             promise = tmp;
       
   233             break;
       
   234         }
       
   235     }
       
   236     
       
   237     if (!promise.itemId && flavorAsQString == QLatin1String("com.trolltech.qt.MimeTypeName")) {
       
   238         // we have promised this data, but wont be able to convert, so return null data.
       
   239         // This helps in making the application/x-qt-mime-type-name hidden from normal use.
       
   240         QByteArray ba;
       
   241         QCFType<CFDataRef> data = CFDataCreate(0, (UInt8*)ba.constData(), ba.size());
       
   242         PasteboardPutItemFlavor(paste, id, flavor, data, kPasteboardFlavorNoFlags);
       
   243         return noErr;
       
   244     }
       
   245     
       
   246     if (!promise.itemId) {
       
   247         // There was no promise that could deliver data for the
       
   248         // given id and flavor. This should not happend.
       
   249         qDebug("Pasteboard: %d: Request for %ld, %s, but no promise found!", __LINE__, promise_id, qPrintable(flavorAsQString));
       
   250         return cantGetFlavorErr;
       
   251     }
       
   252 
       
   253 #ifdef DEBUG_PASTEBOARD
       
   254     qDebug("PasteBoard: Calling in promise for %s[%ld] [%s] (%s) [%d]", qPrintable(promise.mime), promise_id,
       
   255            qPrintable(flavorAsQString), qPrintable(promise.convertor->convertorName()), promise.offset);
       
   256 #endif
       
   257 
       
   258     QList<QByteArray> md = promise.convertor->convertFromMime(promise.mime, promise.data, flavorAsQString);
       
   259     if (md.size() <= promise.offset)
       
   260         return cantGetFlavorErr;
       
   261     const QByteArray &ba = md[promise.offset];
       
   262     QCFType<CFDataRef> data = CFDataCreate(0, (UInt8*)ba.constData(), ba.size());
       
   263     PasteboardPutItemFlavor(paste, id, flavor, data, kPasteboardFlavorNoFlags);
       
   264     return noErr;
       
   265 }
       
   266 
       
   267 bool
       
   268 QMacPasteboard::hasOSType(int c_flavor) const
       
   269 {
       
   270     if (!paste)
       
   271         return false;
       
   272 
       
   273     sync();
       
   274 
       
   275     ItemCount cnt = 0;
       
   276     if(PasteboardGetItemCount(paste, &cnt) || !cnt)
       
   277         return false;
       
   278 
       
   279 #ifdef DEBUG_PASTEBOARD
       
   280     qDebug("PasteBoard: hasOSType [%c%c%c%c]", (c_flavor>>24)&0xFF, (c_flavor>>16)&0xFF,
       
   281            (c_flavor>>8)&0xFF, (c_flavor>>0)&0xFF);
       
   282 #endif
       
   283     for(uint index = 1; index <= cnt; ++index) {
       
   284 
       
   285         PasteboardItemID id;
       
   286         if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
       
   287             return false;
       
   288 
       
   289         QCFType<CFArrayRef> types;
       
   290         if(PasteboardCopyItemFlavors(paste, id, &types ) != noErr)
       
   291             return false;
       
   292 
       
   293         const int type_count = CFArrayGetCount(types);
       
   294         for(int i = 0; i < type_count; ++i) {
       
   295             CFStringRef flavor = (CFStringRef)CFArrayGetValueAtIndex(types, i);
       
   296             const int os_flavor = UTGetOSTypeFromString(UTTypeCopyPreferredTagWithClass(flavor, kUTTagClassOSType));
       
   297             if(os_flavor == c_flavor) {
       
   298 #ifdef DEBUG_PASTEBOARD
       
   299                 qDebug("  - Found!");
       
   300 #endif
       
   301                 return true;
       
   302             }
       
   303         }
       
   304     }
       
   305 #ifdef DEBUG_PASTEBOARD
       
   306     qDebug("  - NotFound!");
       
   307 #endif
       
   308     return false;
       
   309 }
       
   310 
       
   311 bool
       
   312 QMacPasteboard::hasFlavor(QString c_flavor) const
       
   313 {
       
   314     if (!paste)
       
   315         return false;
       
   316 
       
   317     sync();
       
   318 
       
   319     ItemCount cnt = 0;
       
   320     if(PasteboardGetItemCount(paste, &cnt) || !cnt)
       
   321         return false;
       
   322 
       
   323 #ifdef DEBUG_PASTEBOARD
       
   324     qDebug("PasteBoard: hasFlavor [%s]", qPrintable(c_flavor));
       
   325 #endif
       
   326     for(uint index = 1; index <= cnt; ++index) {
       
   327 
       
   328         PasteboardItemID id;
       
   329         if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
       
   330             return false;
       
   331 
       
   332         PasteboardFlavorFlags flags;
       
   333         if(PasteboardGetItemFlavorFlags(paste, id, QCFString(c_flavor), &flags) == noErr) {
       
   334 #ifdef DEBUG_PASTEBOARD
       
   335             qDebug("  - Found!");
       
   336 #endif
       
   337             return true;
       
   338         }
       
   339     }
       
   340 #ifdef DEBUG_PASTEBOARD
       
   341     qDebug("  - NotFound!");
       
   342 #endif
       
   343     return false;
       
   344 }
       
   345 
       
   346 class QMacPasteboardMimeSource : public QMimeData {
       
   347     const QMacPasteboard *paste;
       
   348 public:
       
   349     QMacPasteboardMimeSource(const QMacPasteboard *p) : QMimeData(), paste(p) { }
       
   350     ~QMacPasteboardMimeSource() { }
       
   351     virtual QStringList formats() const { return paste->formats(); }
       
   352     virtual QVariant retrieveData(const QString &format, QVariant::Type type) const { return paste->retrieveData(format, type); }
       
   353 };
       
   354 
       
   355 QMimeData
       
   356 *QMacPasteboard::mimeData() const
       
   357 {
       
   358     if(!mime) {
       
   359         mac_mime_source = true;
       
   360         mime = new QMacPasteboardMimeSource(this);
       
   361 
       
   362     }
       
   363     return mime;
       
   364 }
       
   365 
       
   366 class QMacMimeData : public QMimeData
       
   367 {
       
   368 public:
       
   369     QVariant variantData(const QString &mime) { return retrieveData(mime, QVariant::Invalid); }
       
   370 private:
       
   371     QMacMimeData();
       
   372 };
       
   373 
       
   374 void
       
   375 QMacPasteboard::setMimeData(QMimeData *mime_src)
       
   376 {
       
   377     if (!paste)
       
   378         return;
       
   379 
       
   380     if (mime == mime_src || (!mime_src && mime && mac_mime_source))
       
   381         return;
       
   382     mac_mime_source = false;
       
   383     delete mime;
       
   384     mime = mime_src;
       
   385 
       
   386     QList<QMacPasteboardMime*> availableConverters = QMacPasteboardMime::all(mime_type);
       
   387     if (mime != 0) {
       
   388         clear_helper();
       
   389         QStringList formats = mime_src->formats();
       
   390 
       
   391 #ifdef QT_MAC_USE_COCOA
       
   392         // QMimeData sub classes reimplementing the formats() might not expose the
       
   393         // temporary "application/x-qt-mime-type-name" mimetype. So check the existence
       
   394         // of this mime type while doing drag and drop.
       
   395         QString dummyMimeType(QLatin1String("application/x-qt-mime-type-name"));
       
   396         if (!formats.contains(dummyMimeType)) {
       
   397             QByteArray dummyType = mime_src->data(dummyMimeType);
       
   398             if (!dummyType.isEmpty()) {
       
   399                 formats.append(dummyMimeType);
       
   400             }
       
   401         }
       
   402 #endif
       
   403         for(int f = 0; f < formats.size(); ++f) {
       
   404             QString mimeType = formats.at(f);
       
   405             for (QList<QMacPasteboardMime *>::Iterator it = availableConverters.begin(); it != availableConverters.end(); ++it) {
       
   406                 QMacPasteboardMime *c = (*it);
       
   407                 QString flavor(c->flavorFor(mimeType));
       
   408                 if(!flavor.isEmpty()) {
       
   409                     QVariant mimeData = static_cast<QMacMimeData*>(mime_src)->variantData(mimeType);
       
   410 #if 0
       
   411                     //### Grrr, why didn't I put in a virtual int QMacPasteboardMime::count()? --Sam
       
   412                     const int numItems = c->convertFromMime(mimeType, mimeData, flavor).size();
       
   413 #else
       
   414                     int numItems = 1; //this is a hack but it is much faster than allowing conversion above
       
   415                     if(c->convertorName() == QLatin1String("FileURL"))
       
   416                         numItems = mime_src->urls().count();
       
   417 #endif
       
   418                     for(int item = 0; item < numItems; ++item) {
       
   419                         const int itemID = item+1; //id starts at 1
       
   420                         promises.append(QMacPasteboard::Promise(itemID, c, mimeType, mimeData, item));
       
   421                         PasteboardPutItemFlavor(paste, (PasteboardItemID)itemID, QCFString(flavor), 0, kPasteboardFlavorNoFlags);
       
   422 #ifdef DEBUG_PASTEBOARD
       
   423                         qDebug(" -  adding %d %s [%s] <%s> [%d]",
       
   424                                itemID, qPrintable(mimeType), qPrintable(flavor), qPrintable(c->convertorName()), item);
       
   425 #endif
       
   426                     }
       
   427                 }
       
   428             }
       
   429         }
       
   430     }
       
   431 }
       
   432 
       
   433 QStringList
       
   434 QMacPasteboard::formats() const
       
   435 {
       
   436     if (!paste)
       
   437         return QStringList();
       
   438 
       
   439     sync();
       
   440 
       
   441     QStringList ret;
       
   442     ItemCount cnt = 0;
       
   443     if(PasteboardGetItemCount(paste, &cnt) || !cnt)
       
   444         return ret;
       
   445 
       
   446 #ifdef DEBUG_PASTEBOARD
       
   447     qDebug("PasteBoard: Formats [%d]", (int)cnt);
       
   448 #endif
       
   449     for(uint index = 1; index <= cnt; ++index) {
       
   450 
       
   451         PasteboardItemID id;
       
   452         if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
       
   453             continue;
       
   454 
       
   455         QCFType<CFArrayRef> types;
       
   456         if(PasteboardCopyItemFlavors(paste, id, &types ) != noErr)
       
   457             continue;
       
   458 
       
   459         const int type_count = CFArrayGetCount(types);
       
   460         for(int i = 0; i < type_count; ++i) {
       
   461             const QString flavor = QCFString::toQString((CFStringRef)CFArrayGetValueAtIndex(types, i));
       
   462 #ifdef DEBUG_PASTEBOARD
       
   463             qDebug(" -%s", qPrintable(QString(flavor)));
       
   464 #endif
       
   465             QString mimeType = QMacPasteboardMime::flavorToMime(mime_type, flavor);
       
   466             if(!mimeType.isEmpty() && !ret.contains(mimeType)) {
       
   467 #ifdef DEBUG_PASTEBOARD
       
   468                 qDebug("   -<%d> %s [%s]", ret.size(), qPrintable(mimeType), qPrintable(QString(flavor)));
       
   469 #endif
       
   470                 ret << mimeType;
       
   471             }
       
   472         }
       
   473     }
       
   474     return ret;
       
   475 }
       
   476 
       
   477 bool
       
   478 QMacPasteboard::hasFormat(const QString &format) const
       
   479 {
       
   480     if (!paste)
       
   481         return false;
       
   482 
       
   483     sync();
       
   484 
       
   485     ItemCount cnt = 0;
       
   486     if(PasteboardGetItemCount(paste, &cnt) || !cnt)
       
   487         return false;
       
   488 
       
   489 #ifdef DEBUG_PASTEBOARD
       
   490     qDebug("PasteBoard: hasFormat [%s]", qPrintable(format));
       
   491 #endif
       
   492     for(uint index = 1; index <= cnt; ++index) {
       
   493 
       
   494         PasteboardItemID id;
       
   495         if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
       
   496             continue;
       
   497 
       
   498         QCFType<CFArrayRef> types;
       
   499         if(PasteboardCopyItemFlavors(paste, id, &types ) != noErr)
       
   500             continue;
       
   501 
       
   502         const int type_count = CFArrayGetCount(types);
       
   503         for(int i = 0; i < type_count; ++i) {
       
   504             const QString flavor = QCFString::toQString((CFStringRef)CFArrayGetValueAtIndex(types, i));
       
   505 #ifdef DEBUG_PASTEBOARD
       
   506             qDebug(" -%s [0x%x]", qPrintable(QString(flavor)), mime_type);
       
   507 #endif
       
   508             QString mimeType = QMacPasteboardMime::flavorToMime(mime_type, flavor);
       
   509 #ifdef DEBUG_PASTEBOARD
       
   510             if(!mimeType.isEmpty())
       
   511                 qDebug("   - %s", qPrintable(mimeType));
       
   512 #endif
       
   513             if(mimeType == format)
       
   514                 return true;
       
   515         }
       
   516     }
       
   517     return false;
       
   518 }
       
   519 
       
   520 QVariant
       
   521 QMacPasteboard::retrieveData(const QString &format, QVariant::Type) const
       
   522 {
       
   523     if (!paste)
       
   524         return QVariant();
       
   525 
       
   526     sync();
       
   527 
       
   528     ItemCount cnt = 0;
       
   529     if(PasteboardGetItemCount(paste, &cnt) || !cnt)
       
   530         return QByteArray();
       
   531 
       
   532 #ifdef DEBUG_PASTEBOARD
       
   533     qDebug("Pasteboard: retrieveData [%s]", qPrintable(format));
       
   534 #endif
       
   535     const QList<QMacPasteboardMime *> mimes = QMacPasteboardMime::all(mime_type);
       
   536     for(int mime = 0; mime < mimes.size(); ++mime) {
       
   537         QMacPasteboardMime *c = mimes.at(mime);
       
   538         QString c_flavor = c->flavorFor(format);
       
   539         if(!c_flavor.isEmpty()) {
       
   540             // Handle text/plain a little differently. Try handling Unicode first.
       
   541             bool checkForUtf16 = (c_flavor == QLatin1String("com.apple.traditional-mac-plain-text")
       
   542                                   || c_flavor == QLatin1String("public.utf8-plain-text"));
       
   543             if (checkForUtf16 || c_flavor == QLatin1String("public.utf16-plain-text")) {
       
   544                 // Try to get the NSStringPboardType from NSPasteboard, newlines are mapped
       
   545                 // correctly (as '\n') in this data. The 'public.utf16-plain-text' type
       
   546                 // usually maps newlines to '\r' instead.
       
   547                 QString str = qt_mac_get_pasteboardString(paste);
       
   548                 if (!str.isEmpty())
       
   549                     return str;
       
   550             }
       
   551             if (checkForUtf16 && hasFlavor(QLatin1String("public.utf16-plain-text")))
       
   552                 c_flavor = QLatin1String("public.utf16-plain-text");
       
   553 
       
   554             QVariant ret;
       
   555             QList<QByteArray> retList;
       
   556             for(uint index = 1; index <= cnt; ++index) {
       
   557                 PasteboardItemID id;
       
   558                 if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
       
   559                     continue;
       
   560 
       
   561                 QCFType<CFArrayRef> types;
       
   562                 if(PasteboardCopyItemFlavors(paste, id, &types ) != noErr)
       
   563                     continue;
       
   564 
       
   565                 const int type_count = CFArrayGetCount(types);
       
   566                 for(int i = 0; i < type_count; ++i) {
       
   567                     CFStringRef flavor = static_cast<CFStringRef>(CFArrayGetValueAtIndex(types, i));
       
   568                     if(c_flavor == QCFString::toQString(flavor)) {
       
   569                         QCFType<CFDataRef> macBuffer;
       
   570                         if(PasteboardCopyItemFlavorData(paste, id, flavor, &macBuffer) == noErr) {
       
   571                             QByteArray buffer((const char *)CFDataGetBytePtr(macBuffer), CFDataGetLength(macBuffer));
       
   572                             if(!buffer.isEmpty()) {
       
   573 #ifdef DEBUG_PASTEBOARD
       
   574                                 qDebug("  - %s [%s] (%s)", qPrintable(format), qPrintable(QCFString::toQString(flavor)), qPrintable(c->convertorName()));
       
   575 #endif
       
   576                                 buffer.detach(); //detach since we release the macBuffer
       
   577                                 retList.append(buffer);
       
   578                                 break; //skip to next element
       
   579                             }
       
   580                         }
       
   581                     } else {
       
   582 #ifdef DEBUG_PASTEBOARD
       
   583                         qDebug("  - NoMatch %s [%s] (%s)", qPrintable(c_flavor), qPrintable(QCFString::toQString(flavor)), qPrintable(c->convertorName()));
       
   584 #endif
       
   585                     }
       
   586                 }
       
   587             }
       
   588 
       
   589             if (!retList.isEmpty()) {
       
   590                 ret = c->convertToMime(format, retList, c_flavor);
       
   591                 return ret;
       
   592             }
       
   593         }
       
   594     }
       
   595     return QVariant();
       
   596 }
       
   597 
       
   598 void QMacPasteboard::clear_helper()
       
   599 {
       
   600     if (paste)
       
   601         PasteboardClear(paste);
       
   602     promises.clear();
       
   603 }
       
   604 
       
   605 void
       
   606 QMacPasteboard::clear()
       
   607 {
       
   608 #ifdef DEBUG_PASTEBOARD
       
   609     qDebug("PasteBoard: clear!");
       
   610 #endif
       
   611     clear_helper();
       
   612 }
       
   613 
       
   614 bool
       
   615 QMacPasteboard::sync() const
       
   616 {
       
   617     if (!paste)
       
   618         return false;
       
   619     const bool fromGlobal = PasteboardSynchronize(paste) & kPasteboardModified;
       
   620     
       
   621     if (fromGlobal)
       
   622         const_cast<QMacPasteboard *>(this)->setMimeData(0);
       
   623 
       
   624 #ifdef DEBUG_PASTEBOARD
       
   625     if(fromGlobal)
       
   626         qDebug("Pasteboard: Syncronize!");
       
   627 #endif
       
   628     return fromGlobal;
       
   629 }
       
   630 
       
   631 
       
   632 
       
   633 
       
   634 QT_END_NAMESPACE