summaryrefslogtreecommitdiff
path: root/vcl/unx/gtk3/gtk3gtkinst.cxx
blob: a3f30683cbdbc3ad5aab1103dea5d58e60140623 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#include "../gtk/gtkinst.cxx"

#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include "com/sun/star/lang/XServiceInfo.hpp"
#include "com/sun/star/lang/XSingleServiceFactory.hpp"
#include "com/sun/star/lang/XInitialization.hpp"
#include "com/sun/star/datatransfer/XTransferable.hpp"
#include "com/sun/star/datatransfer/clipboard/XClipboard.hpp"
#include "com/sun/star/datatransfer/clipboard/XClipboardEx.hpp"
#include "com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp"
#include "com/sun/star/datatransfer/clipboard/XClipboardListener.hpp"
#include "com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp"
#include "com/sun/star/datatransfer/clipboard/XSystemClipboard.hpp"
#include "com/sun/star/datatransfer/dnd/XDragSource.hpp"
#include "com/sun/star/datatransfer/dnd/XDropTarget.hpp"
#include "com/sun/star/datatransfer/dnd/DNDConstants.hpp"
#include <comphelper/processfactory.hxx>
#include <comphelper/sequence.hxx>
#include "cppuhelper/compbase.hxx"
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>

using namespace com::sun::star;
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;

namespace
{
    struct TypeEntry
    {
        const char*     pNativeType;        // string corresponding to nAtom for the case of nAtom being uninitialized
        const char*     pType;              // Mime encoding on our side
    };

    static const TypeEntry aConversionTab[] =
    {
        { "ISO10646-1", "text/plain;charset=utf-16" },
        { "UTF8_STRING", "text/plain;charset=utf-8" },
        { "UTF-8", "text/plain;charset=utf-8" },
        { "text/plain;charset=UTF-8", "text/plain;charset=utf-8" },
        // ISO encodings
        { "ISO8859-2", "text/plain;charset=iso8859-2" },
        { "ISO8859-3", "text/plain;charset=iso8859-3" },
        { "ISO8859-4", "text/plain;charset=iso8859-4" },
        { "ISO8859-5", "text/plain;charset=iso8859-5" },
        { "ISO8859-6", "text/plain;charset=iso8859-6" },
        { "ISO8859-7", "text/plain;charset=iso8859-7" },
        { "ISO8859-8", "text/plain;charset=iso8859-8" },
        { "ISO8859-9", "text/plain;charset=iso8859-9" },
        { "ISO8859-10", "text/plain;charset=iso8859-10" },
        { "ISO8859-13", "text/plain;charset=iso8859-13" },
        { "ISO8859-14", "text/plain;charset=iso8859-14" },
        { "ISO8859-15", "text/plain;charset=iso8859-15" },
        // asian encodings
        { "JISX0201.1976-0", "text/plain;charset=jisx0201.1976-0" },
        { "JISX0208.1983-0", "text/plain;charset=jisx0208.1983-0" },
        { "JISX0208.1990-0", "text/plain;charset=jisx0208.1990-0" },
        { "JISX0212.1990-0", "text/plain;charset=jisx0212.1990-0" },
        { "GB2312.1980-0", "text/plain;charset=gb2312.1980-0" },
        { "KSC5601.1992-0", "text/plain;charset=ksc5601.1992-0" },
        // eastern european encodings
        { "KOI8-R", "text/plain;charset=koi8-r" },
        { "KOI8-U", "text/plain;charset=koi8-u" },
        // String (== iso8859-1)
        { "STRING", "text/plain;charset=iso8859-1" },
        // special for compound text
        { "COMPOUND_TEXT", "text/plain;charset=compound_text" },

        // PIXMAP
        { "PIXMAP", "image/bmp" }
    };

    class DataFlavorEq : public std::unary_function<const css::datatransfer::DataFlavor&, bool>
    {
    private:
        const css::datatransfer::DataFlavor& m_rData;
    public:
        explicit DataFlavorEq(const css::datatransfer::DataFlavor& rData) : m_rData(rData) {}
        bool operator() (const css::datatransfer::DataFlavor& rData) const
        {
            return rData.MimeType == m_rData.MimeType &&
                   rData.DataType  == m_rData.DataType;
        }
    };
}

class GtkTransferable : public ::cppu::WeakImplHelper <
    css::datatransfer::XTransferable >
{
private:
    GdkAtom m_nSelection;
    std::map<OUString, GdkAtom> m_aMimeTypeToAtom;
public:

    explicit GtkTransferable(GdkAtom nSelection)
        : m_nSelection(nSelection)
    {
    }

    /*
     * XTransferable
     */

    virtual css::uno::Any SAL_CALL getTransferData(const css::datatransfer::DataFlavor& rFlavor)
        throw(css::datatransfer::UnsupportedFlavorException,
              css::io::IOException,
              css::uno::RuntimeException, std::exception
              ) override
    {
        GtkClipboard* clipboard = gtk_clipboard_get(m_nSelection);
        if (rFlavor.MimeType == "text/plain;charset=utf-16")
        {
            OUString aStr;
            gchar *pText = gtk_clipboard_wait_for_text(clipboard);
            if (pText)
                aStr = OUString(pText, rtl_str_getLength(pText), RTL_TEXTENCODING_UTF8);
            g_free(pText);
            css::uno::Any aRet;
            aRet <<= aStr.replaceAll("\r\n", "\n");
            return aRet;
        }

        auto it = m_aMimeTypeToAtom.find(rFlavor.MimeType);
        if (it == m_aMimeTypeToAtom.end())
            return css::uno::Any();

        css::uno::Any aRet;
        GtkSelectionData* data = gtk_clipboard_wait_for_contents(clipboard,
                                                                 it->second);
        gint length;
        const guchar *rawdata = gtk_selection_data_get_data_with_length(data,
                                                                        &length);
        Sequence<sal_Int8> aSeq(reinterpret_cast<const sal_Int8*>(rawdata), length);
        gtk_selection_data_free(data);
        aRet <<= aSeq;
        return aRet;
    }

    std::vector<css::datatransfer::DataFlavor> getTransferDataFlavorsAsVector()
    {
        std::vector<css::datatransfer::DataFlavor> aVector;

        GtkClipboard* clipboard = gtk_clipboard_get(m_nSelection);

        GdkAtom *targets;
        gint n_targets;
        if (gtk_clipboard_wait_for_targets(clipboard, &targets, &n_targets))
        {
            bool bHaveText = false, bHaveUTF16 = false;

            for (gint i = 0; i < n_targets; ++i)
            {
                gchar* pName = gdk_atom_name(targets[i]);
                const char* pFinalName = pName;
                css::datatransfer::DataFlavor aFlavor;

                for (size_t j = 0; j < SAL_N_ELEMENTS(aConversionTab); ++j)
                {
                    if (rtl_str_compare(pName, aConversionTab[j].pNativeType) == 0)
                    {
                        pFinalName = aConversionTab[j].pType;
                        break;
                    }
                }

                aFlavor.MimeType = OUString(pFinalName,
                                            rtl_str_getLength(pFinalName),
                                            RTL_TEXTENCODING_UTF8);

                m_aMimeTypeToAtom[aFlavor.MimeType] = targets[i];

                aFlavor.DataType = cppu::UnoType<Sequence< sal_Int8 >>::get();

                sal_Int32 nIndex(0);
                if (aFlavor.MimeType.getToken(0, ';', nIndex) == "text/plain")
                {
                    bHaveText = true;
                    OUString aToken(aFlavor.MimeType.getToken(0, ';', nIndex));
                    if (aToken == "charset=utf-16")
                    {
                        bHaveUTF16 = true;
                        aFlavor.DataType = cppu::UnoType<OUString>::get();
                    }
                }
                aVector.push_back(aFlavor);
                g_free(pName);
            }

            g_free(targets);

            //If we have text, but no UTF-16 format which is basically the only
            //text-format LibreOffice supports for cnp then claim we do and we
            //will convert on demand
            if (bHaveText && !bHaveUTF16)
            {
                css::datatransfer::DataFlavor aFlavor;
                aFlavor.MimeType = "text/plain;charset=utf-16";
                aFlavor.DataType = cppu::UnoType<OUString>::get();
                aVector.push_back(aFlavor);
            }
        }

        return aVector;
    }

    virtual css::uno::Sequence<css::datatransfer::DataFlavor> SAL_CALL getTransferDataFlavors()
        throw(css::uno::RuntimeException, std::exception) override
    {
        return comphelper::containerToSequence(getTransferDataFlavorsAsVector());
    }

    virtual sal_Bool SAL_CALL isDataFlavorSupported(const css::datatransfer::DataFlavor& rFlavor)
        throw(css::uno::RuntimeException, std::exception) override
    {
        const std::vector<css::datatransfer::DataFlavor> aAll =
            getTransferDataFlavorsAsVector();

        return std::find_if(aAll.begin(), aAll.end(), DataFlavorEq(rFlavor)) != aAll.end();
    }
};

//We want to use gtk_clipboard_get_owner own owner-change to distinguish between
//us gaining the clipboard ownership vs losing it. To do that we need to use
//gtk_clipboard_set_with_owner and to do that we need a GObject, so define
//one here for that purpose and just give it a VclGtkClipboard* member
class VclGtkClipboard;

typedef struct _ClipboardOwner ClipboardOwner;
typedef struct _ClipboardOwnerClass ClipboardOwnerClass;

struct _ClipboardOwner
{
    GObject parent_instance;

    /* instance members */
    VclGtkClipboard* m_pThis;
};

struct _ClipboardOwnerClass
{
  GObjectClass parent_class;

  /* class members */
};

#define CLIPBOARD_OWNER_OBJECT           (clipboard_owner_get_type ())
#define CLIPBOARD_OWNER(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLIPBOARD_OWNER_OBJECT, ClipboardOwner))

#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-function"
#endif
G_DEFINE_TYPE(ClipboardOwner, clipboard_owner, G_TYPE_OBJECT);
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif

static void clipboard_owner_class_init (ClipboardOwnerClass *)
{
}

static void clipboard_owner_init(ClipboardOwner *)
{
}

class VclGtkClipboard :
        public cppu::WeakComponentImplHelper<
        datatransfer::clipboard::XSystemClipboard,
        datatransfer::clipboard::XFlushableClipboard,
        XServiceInfo>
{
    GdkAtom                                                  m_nSelection;
    osl::Mutex                                               m_aMutex;
    ClipboardOwner*                                          m_pOwner;
    gulong                                                   m_nOwnerChangedSignalId;
    Reference<css::datatransfer::XTransferable>              m_aContents;
    Reference<css::datatransfer::clipboard::XClipboardOwner> m_aOwner;
    std::list< Reference<css::datatransfer::clipboard::XClipboardListener> > m_aListeners;
    std::vector<GtkTargetEntry> m_aGtkTargets;
    std::vector<css::datatransfer::DataFlavor> m_aInfoToFlavor;

public:

    explicit VclGtkClipboard(GdkAtom nSelection);
    virtual ~VclGtkClipboard();

    /*
     * XServiceInfo
     */

    virtual OUString SAL_CALL getImplementationName() throw( RuntimeException, std::exception ) override;
    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) throw( RuntimeException, std::exception ) override;
    virtual Sequence< OUString > SAL_CALL getSupportedServiceNames() throw( RuntimeException, std::exception ) override;

    static OUString getImplementationName_static();
    static Sequence< OUString > getSupportedServiceNames_static();

    /*
     * XClipboard
     */

    virtual Reference< css::datatransfer::XTransferable > SAL_CALL getContents()
        throw(RuntimeException, std::exception) override;

    virtual void SAL_CALL setContents(
        const Reference< css::datatransfer::XTransferable >& xTrans,
        const Reference< css::datatransfer::clipboard::XClipboardOwner >& xClipboardOwner )
        throw(RuntimeException, std::exception) override;

    virtual OUString SAL_CALL getName()
        throw(RuntimeException, std::exception) override;

    /*
     * XClipboardEx
     */

    virtual sal_Int8 SAL_CALL getRenderingCapabilities()
        throw(RuntimeException, std::exception) override;

    /*
     * XFlushableClipboard
     */
    virtual void SAL_CALL flushClipboard()
        throw(RuntimeException, std::exception) override;

    /*
     * XClipboardNotifier
     */
    virtual void SAL_CALL addClipboardListener(
        const Reference< css::datatransfer::clipboard::XClipboardListener >& listener )
        throw(RuntimeException, std::exception) override;

    virtual void SAL_CALL removeClipboardListener(
        const Reference< css::datatransfer::clipboard::XClipboardListener >& listener )
        throw(RuntimeException, std::exception) override;

    void ClipboardGet(GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info);
    void ClipboardClear(GtkClipboard *clipboard);
    void OwnerChanged(GtkClipboard *clipboard, GdkEvent *event);
private:
    GtkTargetEntry makeGtkTargetEntry(const css::datatransfer::DataFlavor& rFlavor);
};

OUString VclGtkClipboard::getImplementationName_static()
{
    return OUString( "com.sun.star.datatransfer.VclGtkClipboard"  );
}

Sequence< OUString > VclGtkClipboard::getSupportedServiceNames_static()
{
    Sequence< OUString > aRet { "com.sun.star.datatransfer.clipboard.SystemClipboard" };
    return aRet;
}

OUString VclGtkClipboard::getImplementationName() throw( RuntimeException, std::exception )
{
    return getImplementationName_static();
}

Sequence< OUString > VclGtkClipboard::getSupportedServiceNames() throw( RuntimeException, std::exception )
{
    return getSupportedServiceNames_static();
}

sal_Bool VclGtkClipboard::supportsService( const OUString& ServiceName ) throw( RuntimeException, std::exception )
{
    return cppu::supportsService(this, ServiceName);
}

Reference< css::datatransfer::XTransferable > VclGtkClipboard::getContents() throw( RuntimeException, std::exception )
{
    if (G_OBJECT(m_pOwner) != gtk_clipboard_get_owner(gtk_clipboard_get(m_nSelection)) &&
        !m_aContents.is())
    {
        //tdf#93887 This is the system clipboard/selection. We fetch it when we are not
        //the owner of the clipboard and have not already fetched it.
        m_aContents = new GtkTransferable(m_nSelection);
    }
    return m_aContents;
}

void VclGtkClipboard::ClipboardGet(GtkClipboard* /*clipboard*/, GtkSelectionData *selection_data,
                                   guint info)
{
    if (!m_aContents.is())
        return;

    GdkAtom type(gdk_atom_intern(OUStringToOString(m_aInfoToFlavor[info].MimeType,
                                                   RTL_TEXTENCODING_UTF8).getStr(),
                                 false));

    css::datatransfer::DataFlavor aFlavor(m_aInfoToFlavor[info]);
    if (aFlavor.MimeType == "UTF8_STRING" || aFlavor.MimeType == "STRING")
        aFlavor.MimeType = "text/plain;charset=utf-8";

    Sequence<sal_Int8> aData;
    Any aValue;

    try
    {
        aValue = m_aContents->getTransferData(aFlavor);
    }
    catch(...)
    {
    }

    if (aValue.getValueTypeClass() == TypeClass_STRING)
    {
        OUString aString;
        aValue >>= aString;
        aData = Sequence< sal_Int8 >( reinterpret_cast<sal_Int8 const *>(aString.getStr()), aString.getLength() * sizeof( sal_Unicode ) );
    }
    else if (aValue.getValueType() == cppu::UnoType<Sequence< sal_Int8 >>::get())
    {
        aValue >>= aData;
    }
    else if (aFlavor.MimeType == "text/plain;charset=utf-8")
    {
        //didn't have utf-8, try utf-16 and convert
        aFlavor.MimeType = "text/plain;charset=utf-16";
        aFlavor.DataType = cppu::UnoType<OUString>::get();
        try
        {
            aValue = m_aContents->getTransferData(aFlavor);
        }
        catch(...)
        {
        }
        OUString aString;
        aValue >>= aString;
        OString aUTF8String(OUStringToOString(aString, RTL_TEXTENCODING_UTF8));
        gtk_selection_data_set(selection_data, type, 8,
                               reinterpret_cast<const guchar *>(aUTF8String.getStr()),
                               aUTF8String.getLength());
        return;
    }

    gtk_selection_data_set(selection_data, type, 8,
                           reinterpret_cast<const guchar *>(aData.getArray()),
                           aData.getLength());
}

void VclGtkClipboard::OwnerChanged(GtkClipboard* clipboard, GdkEvent* /*event*/)
{
    if (G_OBJECT(m_pOwner) != gtk_clipboard_get_owner(clipboard))
    {
        //null out m_aContents to return control to the system-one which
        //will be retrieved if getContents is called again
        setContents(Reference<css::datatransfer::XTransferable>(),
                    Reference<css::datatransfer::clipboard::XClipboardOwner>());
    }
}

void VclGtkClipboard::ClipboardClear(GtkClipboard * /*clipboard*/)
{
    for (auto &a : m_aGtkTargets)
        g_free(a.target);
    m_aGtkTargets.clear();
}

GtkTargetEntry VclGtkClipboard::makeGtkTargetEntry(const css::datatransfer::DataFlavor& rFlavor)
{
    GtkTargetEntry aEntry;
    aEntry.target =
        g_strdup(OUStringToOString(rFlavor.MimeType, RTL_TEXTENCODING_UTF8).getStr());
    aEntry.flags = 0;
    auto it = std::find_if(m_aInfoToFlavor.begin(), m_aInfoToFlavor.end(),
                        DataFlavorEq(rFlavor));
    if (it != m_aInfoToFlavor.end())
        aEntry.info = std::distance(m_aInfoToFlavor.begin(), it);
    else
    {
        aEntry.info = m_aInfoToFlavor.size();
        m_aInfoToFlavor.push_back(rFlavor);
    }
    return aEntry;
}

namespace
{
    void ClipboardGetFunc(GtkClipboard *clipboard, GtkSelectionData *selection_data,
                          guint info,
                          gpointer user_data_or_owner)
    {
        VclGtkClipboard* pThis = CLIPBOARD_OWNER(user_data_or_owner)->m_pThis;
        pThis->ClipboardGet(clipboard, selection_data, info);
    }

    void ClipboardClearFunc(GtkClipboard *clipboard, gpointer user_data_or_owner)
    {
        VclGtkClipboard* pThis = CLIPBOARD_OWNER(user_data_or_owner)->m_pThis;
        pThis->ClipboardClear(clipboard);
    }

    void handle_owner_change(GtkClipboard *clipboard, GdkEvent *event, gpointer user_data)
    {
        VclGtkClipboard* pThis = static_cast<VclGtkClipboard*>(user_data);
        pThis->OwnerChanged(clipboard, event);
    }
}

VclGtkClipboard::VclGtkClipboard(GdkAtom nSelection)
    : cppu::WeakComponentImplHelper<datatransfer::clipboard::XSystemClipboard,
                                    datatransfer::clipboard::XFlushableClipboard, XServiceInfo>
        (m_aMutex)
    , m_nSelection(nSelection)
{
    GtkClipboard* clipboard = gtk_clipboard_get(m_nSelection);
    m_nOwnerChangedSignalId = g_signal_connect(clipboard, "owner-change",
                                               G_CALLBACK(handle_owner_change), this);
    m_pOwner = CLIPBOARD_OWNER(g_object_new(CLIPBOARD_OWNER_OBJECT, nullptr));
    m_pOwner->m_pThis = this;
}

void VclGtkClipboard::flushClipboard()
  throw (RuntimeException, std::exception)
{
    if (GDK_SELECTION_CLIPBOARD != m_nSelection)
        return;

    GtkClipboard* clipboard = gtk_clipboard_get(m_nSelection);
    gtk_clipboard_store(clipboard);
}

VclGtkClipboard::~VclGtkClipboard()
{
    GtkClipboard* clipboard = gtk_clipboard_get(m_nSelection);
    g_signal_handler_disconnect(clipboard, m_nOwnerChangedSignalId);
    g_object_unref(m_pOwner);
    ClipboardClear(nullptr);
}

void VclGtkClipboard::setContents(
        const Reference< css::datatransfer::XTransferable >& xTrans,
        const Reference< css::datatransfer::clipboard::XClipboardOwner >& xClipboardOwner )
    throw(RuntimeException, std::exception)
{
    osl::ClearableMutexGuard aGuard( m_aMutex );
    Reference< datatransfer::clipboard::XClipboardOwner > xOldOwner( m_aOwner );
    Reference< datatransfer::XTransferable > xOldContents( m_aContents );
    m_aContents = xTrans;
    m_aOwner = xClipboardOwner;

    std::list< Reference< datatransfer::clipboard::XClipboardListener > > xListeners( m_aListeners );
    datatransfer::clipboard::ClipboardEvent aEv;

    if (m_aContents.is())
    {
        css::uno::Sequence<css::datatransfer::DataFlavor> aFormats = xTrans->getTransferDataFlavors();
        std::vector<GtkTargetEntry> aGtkTargets;
        bool bHaveText(false), bHaveUTF8(false);
        for (int i = 0; i < aFormats.getLength(); ++i)
        {
            const css::datatransfer::DataFlavor& rFlavor = aFormats[i];

            sal_Int32 nIndex(0);
            if (rFlavor.MimeType.getToken(0, ';', nIndex) == "text/plain")
            {
                bHaveText = true;
                OUString aToken(rFlavor.MimeType.getToken(0, ';', nIndex));
                if (aToken == "charset=utf-8")
                {
                    bHaveUTF8 = true;
                }
            }
            GtkTargetEntry aEntry(makeGtkTargetEntry(rFlavor));
            aGtkTargets.push_back(aEntry);
        }

        if (bHaveText)
        {
            css::datatransfer::DataFlavor aFlavor;
            aFlavor.DataType = cppu::UnoType<Sequence< sal_Int8 >>::get();
            if (!bHaveUTF8)
            {
                aFlavor.MimeType = "text/plain;charset=utf-8";
                aGtkTargets.push_back(makeGtkTargetEntry(aFlavor));
            }
            aFlavor.MimeType = "UTF8_STRING";
            aGtkTargets.push_back(makeGtkTargetEntry(aFlavor));
            aFlavor.MimeType = "STRING";
            aGtkTargets.push_back(makeGtkTargetEntry(aFlavor));
        }

        if (!aGtkTargets.empty())
        {
            //if there was a previous gtk_clipboard_set_with_data call then
            //ClipboardClearFunc will be called now
            GtkClipboard* clipboard = gtk_clipboard_get(m_nSelection);
            if(G_OBJECT(m_pOwner) == gtk_clipboard_get_owner(clipboard))
                gtk_clipboard_clear(clipboard);
            //use with_owner with m_pOwner so we can distinguish in handle_owner_change
            //if we have gained or lost ownership of the clipboard
            gtk_clipboard_set_with_owner(clipboard, aGtkTargets.data(), aGtkTargets.size(),
                                        ClipboardGetFunc, ClipboardClearFunc, G_OBJECT(m_pOwner));
            gtk_clipboard_set_can_store(clipboard, aGtkTargets.data(), aGtkTargets.size());
        }
        m_aGtkTargets = aGtkTargets;
    }

    aEv.Contents = getContents();

    aGuard.clear();

    if( xOldOwner.is() && xOldOwner != xClipboardOwner )
        xOldOwner->lostOwnership( this, xOldContents );
    for( std::list< Reference< datatransfer::clipboard::XClipboardListener > >::iterator it =
         xListeners.begin(); it != xListeners.end() ; ++it )
    {
        (*it)->changedContents( aEv );
    }
}

OUString VclGtkClipboard::getName() throw( RuntimeException, std::exception )
{
    return (m_nSelection == GDK_SELECTION_CLIPBOARD) ? OUString("CLIPBOARD") : OUString("PRIMARY");
}

sal_Int8 VclGtkClipboard::getRenderingCapabilities() throw( RuntimeException, std::exception )
{
    return 0;
}

void VclGtkClipboard::addClipboardListener( const Reference< datatransfer::clipboard::XClipboardListener >& listener )
    throw( RuntimeException, std::exception )
{
    osl::ClearableMutexGuard aGuard( m_aMutex );

    m_aListeners.push_back( listener );
}

void VclGtkClipboard::removeClipboardListener( const Reference< datatransfer::clipboard::XClipboardListener >& listener )
    throw( RuntimeException, std::exception )
{
    osl::ClearableMutexGuard aGuard( m_aMutex );

    m_aListeners.remove( listener );
}

Reference< XInterface > GtkInstance::CreateClipboard(const Sequence< Any >& arguments)
{
    OUString sel;
    if (arguments.getLength() == 0) {
        sel = "CLIPBOARD";
    } else if (arguments.getLength() != 1 || !(arguments[0] >>= sel)) {
        throw css::lang::IllegalArgumentException(
            "bad GtkInstance::CreateClipboard arguments",
            css::uno::Reference<css::uno::XInterface>(), -1);
    }

    GdkAtom nSelection = (sel == "CLIPBOARD") ? GDK_SELECTION_CLIPBOARD : GDK_SELECTION_PRIMARY;

    return Reference< XInterface >( static_cast<cppu::OWeakObject *>(new VclGtkClipboard(nSelection)) );
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */