summaryrefslogtreecommitdiff
path: root/xwayland/selection.c
blob: 24bd56df598f82fc609c8c7823a29bd1de86fd51 (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
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
/*
 * Copyright © 2012 Intel Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software and
 * its documentation for any purpose is hereby granted without fee, provided
 * that the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of the copyright holders not be used in
 * advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission.  The copyright holders make
 * no representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>

#include "xwayland.h"

static int
writable_callback(int fd, uint32_t mask, void *data)
{
	struct weston_wm *wm = data;
	unsigned char *property;
	int len, remainder;

	property = xcb_get_property_value(wm->property_reply);
	remainder = xcb_get_property_value_length(wm->property_reply) -
		wm->property_start;

	len = write(fd, property + wm->property_start, remainder);
	if (len == -1) {
		free(wm->property_reply);
		wm->property_reply = NULL;
		if (wm->property_source)
			wl_event_source_remove(wm->property_source);
		wm->property_source = NULL;
		close(fd);
		weston_log("write error to target fd: %m\n");
		return 1;
	}

	weston_log("wrote %d (chunk size %d) of %d bytes\n",
		wm->property_start + len,
		len, xcb_get_property_value_length(wm->property_reply));

	wm->property_start += len;
	if (len == remainder) {
		free(wm->property_reply);
		wm->property_reply = NULL;
		if (wm->property_source)
			wl_event_source_remove(wm->property_source);
		wm->property_source = NULL;

		if (wm->incr) {
			xcb_delete_property(wm->conn,
					    wm->selection_window,
					    wm->atom.wl_selection);
		} else {
			weston_log("transfer complete\n");
			close(fd);
		}
	}

	return 1;
}

static void
weston_wm_write_property(struct weston_wm *wm, xcb_get_property_reply_t *reply)
{
	wm->property_start = 0;
	wm->property_reply = reply;
	writable_callback(wm->data_source_fd, WL_EVENT_WRITABLE, wm);

	if (wm->property_reply)
		wm->property_source =
			wl_event_loop_add_fd(wm->server->loop,
					     wm->data_source_fd,
					     WL_EVENT_WRITABLE,
					     writable_callback, wm);
}

static void
weston_wm_get_incr_chunk(struct weston_wm *wm)
{
	xcb_get_property_cookie_t cookie;
	xcb_get_property_reply_t *reply;

	cookie = xcb_get_property(wm->conn,
				  0, /* delete */
				  wm->selection_window,
				  wm->atom.wl_selection,
				  XCB_GET_PROPERTY_TYPE_ANY,
				  0, /* offset */
				  0x1fffffff /* length */);

	reply = xcb_get_property_reply(wm->conn, cookie, NULL);

	dump_property(wm, wm->atom.wl_selection, reply);

	if (xcb_get_property_value_length(reply) > 0) {
		weston_wm_write_property(wm, reply);
	} else {
		weston_log("transfer complete\n");
		close(wm->data_source_fd);
		free(reply);
	}
}

struct x11_data_source {
	struct weston_data_source base;
	struct weston_wm *wm;
};

static void
data_source_accept(struct weston_data_source *source,
		   uint32_t time, const char *mime_type)
{
}

static void
data_source_send(struct weston_data_source *base,
		 const char *mime_type, int32_t fd)
{
	struct x11_data_source *source = (struct x11_data_source *) base;
	struct weston_wm *wm = source->wm;

	if (strcmp(mime_type, "text/plain;charset=utf-8") == 0) {
		/* Get data for the utf8_string target */
		xcb_convert_selection(wm->conn,
				      wm->selection_window,
				      wm->atom.clipboard,
				      wm->atom.utf8_string,
				      wm->atom.wl_selection,
				      XCB_TIME_CURRENT_TIME);

		xcb_flush(wm->conn);

		fcntl(fd, F_SETFL, O_WRONLY | O_NONBLOCK);
		wm->data_source_fd = fd;
	}
}

static void
data_source_cancel(struct weston_data_source *source)
{
}

static void
weston_wm_get_selection_targets(struct weston_wm *wm)
{
	struct x11_data_source *source;
	struct weston_compositor *compositor;
	struct weston_seat *seat = weston_wm_pick_seat(wm);
	xcb_get_property_cookie_t cookie;
	xcb_get_property_reply_t *reply;
	xcb_atom_t *value;
	char **p;
	uint32_t i;

	cookie = xcb_get_property(wm->conn,
				  1, /* delete */
				  wm->selection_window,
				  wm->atom.wl_selection,
				  XCB_GET_PROPERTY_TYPE_ANY,
				  0, /* offset */
				  4096 /* length */);

	reply = xcb_get_property_reply(wm->conn, cookie, NULL);

	dump_property(wm, wm->atom.wl_selection, reply);

	if (reply->type != XCB_ATOM_ATOM) {
		free(reply);
		return;
	}

	source = malloc(sizeof *source);
	if (source == NULL)
		return;

	wl_signal_init(&source->base.destroy_signal);
	source->base.accept = data_source_accept;
	source->base.send = data_source_send;
	source->base.cancel = data_source_cancel;
	source->wm = wm;

	wl_array_init(&source->base.mime_types);
	value = xcb_get_property_value(reply);
	for (i = 0; i < reply->value_len; i++) {
		if (value[i] == wm->atom.utf8_string) {
			p = wl_array_add(&source->base.mime_types, sizeof *p);
			if (p)
				*p = strdup("text/plain;charset=utf-8");
		}
	}

	compositor = wm->server->compositor;
	weston_seat_set_selection(seat, &source->base,
				  wl_display_next_serial(compositor->wl_display));

	free(reply);
}

static void
weston_wm_get_selection_data(struct weston_wm *wm)
{
	xcb_get_property_cookie_t cookie;
	xcb_get_property_reply_t *reply;

	cookie = xcb_get_property(wm->conn,
				  1, /* delete */
				  wm->selection_window,
				  wm->atom.wl_selection,
				  XCB_GET_PROPERTY_TYPE_ANY,
				  0, /* offset */
				  0x1fffffff /* length */);

	reply = xcb_get_property_reply(wm->conn, cookie, NULL);

	if (reply->type == wm->atom.incr) {
		dump_property(wm, wm->atom.wl_selection, reply);
		wm->incr = 1;
		free(reply);
	} else {
		dump_property(wm, wm->atom.wl_selection, reply);
		wm->incr = 0;
		weston_wm_write_property(wm, reply);
	}
}

static void
weston_wm_handle_selection_notify(struct weston_wm *wm,
				xcb_generic_event_t *event)
{
	xcb_selection_notify_event_t *selection_notify =
		(xcb_selection_notify_event_t *) event;

	if (selection_notify->property == XCB_ATOM_NONE) {
		/* convert selection failed */
	} else if (selection_notify->target == wm->atom.targets) {
		weston_wm_get_selection_targets(wm);
	} else {
		weston_wm_get_selection_data(wm);
	}
}

static const size_t incr_chunk_size = 64 * 1024;

static void
weston_wm_send_selection_notify(struct weston_wm *wm, xcb_atom_t property)
{
	xcb_selection_notify_event_t selection_notify;

	memset(&selection_notify, 0, sizeof selection_notify);
	selection_notify.response_type = XCB_SELECTION_NOTIFY;
	selection_notify.sequence = 0;
	selection_notify.time = wm->selection_request.time;
	selection_notify.requestor = wm->selection_request.requestor;
	selection_notify.selection = wm->selection_request.selection;
	selection_notify.target = wm->selection_request.target;
	selection_notify.property = property;

	xcb_send_event(wm->conn, 0, /* propagate */
		       wm->selection_request.requestor,
		       XCB_EVENT_MASK_NO_EVENT, (char *) &selection_notify);
}

static void
weston_wm_send_targets(struct weston_wm *wm)
{
	xcb_atom_t targets[] = {
		wm->atom.timestamp,
		wm->atom.targets,
		wm->atom.utf8_string,
		/* wm->atom.compound_text, */
		wm->atom.text,
		/* wm->atom.string */
	};

	xcb_change_property(wm->conn,
			    XCB_PROP_MODE_REPLACE,
			    wm->selection_request.requestor,
			    wm->selection_request.property,
			    XCB_ATOM_ATOM,
			    32, /* format */
			    ARRAY_LENGTH(targets), targets);

	weston_wm_send_selection_notify(wm, wm->selection_request.property);
}

static void
weston_wm_send_timestamp(struct weston_wm *wm)
{
	xcb_change_property(wm->conn,
			    XCB_PROP_MODE_REPLACE,
			    wm->selection_request.requestor,
			    wm->selection_request.property,
			    XCB_ATOM_INTEGER,
			    32, /* format */
			    1, &wm->selection_timestamp);

	weston_wm_send_selection_notify(wm, wm->selection_request.property);
}

static int
weston_wm_flush_source_data(struct weston_wm *wm)
{
	int length;

	xcb_change_property(wm->conn,
			    XCB_PROP_MODE_REPLACE,
			    wm->selection_request.requestor,
			    wm->selection_request.property,
			    wm->selection_target,
			    8, /* format */
			    wm->source_data.size,
			    wm->source_data.data);
	wm->selection_property_set = 1;
	length = wm->source_data.size;
	wm->source_data.size = 0;

	return length;
}

static int
weston_wm_read_data_source(int fd, uint32_t mask, void *data)
{
	struct weston_wm *wm = data;
	int len, current, available;
	void *p;

	current = wm->source_data.size;
	if (wm->source_data.size < incr_chunk_size)
		p = wl_array_add(&wm->source_data, incr_chunk_size);
	else
		p = (char *) wm->source_data.data + wm->source_data.size;
	available = wm->source_data.alloc - current;

	len = read(fd, p, available);
	if (len == -1) {
		weston_log("read error from data source: %m\n");
		weston_wm_send_selection_notify(wm, XCB_ATOM_NONE);
		wl_event_source_remove(wm->property_source);
		wm->property_source = NULL;
		close(fd);
		wl_array_release(&wm->source_data);
	}

	weston_log("read %d (available %d, mask 0x%x) bytes: \"%.*s\"\n",
		len, available, mask, len, (char *) p);

	wm->source_data.size = current + len;
	if (wm->source_data.size >= incr_chunk_size) {
		if (!wm->incr) {
			weston_log("got %zu bytes, starting incr\n",
				wm->source_data.size);
			wm->incr = 1;
			xcb_change_property(wm->conn,
					    XCB_PROP_MODE_REPLACE,
					    wm->selection_request.requestor,
					    wm->selection_request.property,
					    wm->atom.incr,
					    32, /* format */
					    1, &incr_chunk_size);
			wm->selection_property_set = 1;
			wm->flush_property_on_delete = 1;
			wl_event_source_remove(wm->property_source);
			wm->property_source = NULL;
			weston_wm_send_selection_notify(wm, wm->selection_request.property);
		} else if (wm->selection_property_set) {
			weston_log("got %zu bytes, waiting for "
				"property delete\n", wm->source_data.size);

			wm->flush_property_on_delete = 1;
			wl_event_source_remove(wm->property_source);
			wm->property_source = NULL;
		} else {
			weston_log("got %zu bytes, "
				"property deleted, seting new property\n",
				wm->source_data.size);
			weston_wm_flush_source_data(wm);
		}
	} else if (len == 0 && !wm->incr) {
		weston_log("non-incr transfer complete\n");
		/* Non-incr transfer all done. */
		weston_wm_flush_source_data(wm);
		weston_wm_send_selection_notify(wm, wm->selection_request.property);
		xcb_flush(wm->conn);
		wl_event_source_remove(wm->property_source);
		wm->property_source = NULL;
		close(fd);
		wl_array_release(&wm->source_data);
		wm->selection_request.requestor = XCB_NONE;
	} else if (len == 0 && wm->incr) {
		weston_log("incr transfer complete\n");

		wm->flush_property_on_delete = 1;
		if (wm->selection_property_set) {
			weston_log("got %zu bytes, waiting for "
				"property delete\n", wm->source_data.size);
		} else {
			weston_log("got %zu bytes, "
				"property deleted, seting new property\n",
				wm->source_data.size);
			weston_wm_flush_source_data(wm);
		}
		xcb_flush(wm->conn);
		wl_event_source_remove(wm->property_source);
		wm->property_source = NULL;
		close(wm->data_source_fd);
		wm->data_source_fd = -1;
		close(fd);
	} else {
		weston_log("nothing happened, buffered the bytes\n");
	}

	return 1;
}

static void
weston_wm_send_data(struct weston_wm *wm, xcb_atom_t target, const char *mime_type)
{
	struct weston_data_source *source;
	struct weston_seat *seat = weston_wm_pick_seat(wm);
	int p[2];

	if (pipe2(p, O_CLOEXEC | O_NONBLOCK) == -1) {
		weston_log("pipe2 failed: %m\n");
		weston_wm_send_selection_notify(wm, XCB_ATOM_NONE);
		return;
	}

	wl_array_init(&wm->source_data);
	wm->selection_target = target;
	wm->data_source_fd = p[0];
	wm->property_source = wl_event_loop_add_fd(wm->server->loop,
						   wm->data_source_fd,
						   WL_EVENT_READABLE,
						   weston_wm_read_data_source,
						   wm);

	source = seat->selection_data_source;
	source->send(source, mime_type, p[1]);
	close(p[1]);
}

static void
weston_wm_send_incr_chunk(struct weston_wm *wm)
{
	int length;

	weston_log("property deleted\n");

	wm->selection_property_set = 0;
	if (wm->flush_property_on_delete) {
		weston_log("setting new property, %zu bytes\n",
			wm->source_data.size);
		wm->flush_property_on_delete = 0;
		length = weston_wm_flush_source_data(wm);

		if (wm->data_source_fd >= 0) {
			wm->property_source =
				wl_event_loop_add_fd(wm->server->loop,
						     wm->data_source_fd,
						     WL_EVENT_READABLE,
						     weston_wm_read_data_source,
						     wm);
		} else if (length > 0) {
			/* Transfer is all done, but queue a flush for
			 * the delete of the last chunk so we can set
			 * the 0 sized propert to signal the end of
			 * the transfer. */
			wm->flush_property_on_delete = 1;
			wl_array_release(&wm->source_data);
		} else {
			wm->selection_request.requestor = XCB_NONE;
		}
	}
}

static int
weston_wm_handle_selection_property_notify(struct weston_wm *wm,
					   xcb_generic_event_t *event)
{
	xcb_property_notify_event_t *property_notify =
		(xcb_property_notify_event_t *) event;

	if (property_notify->window == wm->selection_window) {
		if (property_notify->state == XCB_PROPERTY_NEW_VALUE &&
		    property_notify->atom == wm->atom.wl_selection &&
		    wm->incr)
			weston_wm_get_incr_chunk(wm);
		return 1;
	} else if (property_notify->window == wm->selection_request.requestor) {
		if (property_notify->state == XCB_PROPERTY_DELETE &&
		    property_notify->atom == wm->selection_request.property &&
		    wm->incr)
			weston_wm_send_incr_chunk(wm);
		return 1;
	}

	return 0;
}

static void
weston_wm_handle_selection_request(struct weston_wm *wm,
				 xcb_generic_event_t *event)
{
	xcb_selection_request_event_t *selection_request =
		(xcb_selection_request_event_t *) event;

	weston_log("selection request, %s, ",
		get_atom_name(wm->conn, selection_request->selection));
	weston_log_continue("target %s, ",
		get_atom_name(wm->conn, selection_request->target));
	weston_log_continue("property %s\n",
		get_atom_name(wm->conn, selection_request->property));

	wm->selection_request = *selection_request;
	wm->incr = 0;
	wm->flush_property_on_delete = 0;

	if (selection_request->selection == wm->atom.clipboard_manager) {
		/* The weston clipboard should already have grabbed
		 * the first target, so just send selection notify
		 * now.  This isn't synchronized with the clipboard
		 * finishing getting the data, so there's a race here. */
		weston_wm_send_selection_notify(wm, wm->selection_request.property);
		return;
	}

	if (selection_request->target == wm->atom.targets) {
		weston_wm_send_targets(wm);
	} else if (selection_request->target == wm->atom.timestamp) {
		weston_wm_send_timestamp(wm);
	} else if (selection_request->target == wm->atom.utf8_string ||
		   selection_request->target == wm->atom.text) {
		weston_wm_send_data(wm, wm->atom.utf8_string,
				  "text/plain;charset=utf-8");
	} else {
		weston_log("can only handle UTF8_STRING targets...\n");
		weston_wm_send_selection_notify(wm, XCB_ATOM_NONE);
	}
}

static int
weston_wm_handle_xfixes_selection_notify(struct weston_wm *wm,
				       xcb_generic_event_t *event)
{
	xcb_xfixes_selection_notify_event_t *xfixes_selection_notify =
		(xcb_xfixes_selection_notify_event_t *) event;
	struct weston_compositor *compositor;
	struct weston_seat *seat = weston_wm_pick_seat(wm);
	uint32_t serial;

	if (xfixes_selection_notify->selection != wm->atom.clipboard)
		return 0;

	weston_log("xfixes selection notify event: owner %d\n",
	       xfixes_selection_notify->owner);

	if (xfixes_selection_notify->owner == XCB_WINDOW_NONE) {
		if (wm->selection_owner != wm->selection_window) {
			/* A real X client selection went away, not our
			 * proxy selection.  Clear the wayland selection. */
			compositor = wm->server->compositor;
			serial = wl_display_next_serial(compositor->wl_display);
			weston_seat_set_selection(seat, NULL, serial);
		}

		wm->selection_owner = XCB_WINDOW_NONE;

		return 1;
	}

	wm->selection_owner = xfixes_selection_notify->owner;

	/* We have to use XCB_TIME_CURRENT_TIME when we claim the
	 * selection, so grab the actual timestamp here so we can
	 * answer TIMESTAMP conversion requests correctly. */
	if (xfixes_selection_notify->owner == wm->selection_window) {
		wm->selection_timestamp = xfixes_selection_notify->timestamp;
		weston_log("our window, skipping\n");
		return 1;
	}

	wm->incr = 0;
	xcb_convert_selection(wm->conn, wm->selection_window,
			      wm->atom.clipboard,
			      wm->atom.targets,
			      wm->atom.wl_selection,
			      xfixes_selection_notify->timestamp);

	xcb_flush(wm->conn);

	return 1;
}

int
weston_wm_handle_selection_event(struct weston_wm *wm,
				 xcb_generic_event_t *event)
{
	switch (event->response_type & ~0x80) {
	case XCB_SELECTION_NOTIFY:
		weston_wm_handle_selection_notify(wm, event);
		return 1;
	case XCB_PROPERTY_NOTIFY:
		return weston_wm_handle_selection_property_notify(wm, event);
	case XCB_SELECTION_REQUEST:
		weston_wm_handle_selection_request(wm, event);
		return 1;
	}

	switch (event->response_type - wm->xfixes->first_event) {
	case XCB_XFIXES_SELECTION_NOTIFY:
		return weston_wm_handle_xfixes_selection_notify(wm, event);
	}

	return 0;
}

static void
weston_wm_set_selection(struct wl_listener *listener, void *data)
{
	struct weston_seat *seat = data;
	struct weston_wm *wm =
		container_of(listener, struct weston_wm, selection_listener);
	struct weston_data_source *source = seat->selection_data_source;
	const char **p, **end;
	int has_text_plain = 0;

	if (source == NULL) {
		if (wm->selection_owner == wm->selection_window)
			xcb_set_selection_owner(wm->conn,
						XCB_ATOM_NONE,
						wm->atom.clipboard,
						wm->selection_timestamp);
		return;
	}

	if (source->send == data_source_send)
		return;

	p = source->mime_types.data;
	end = (const char **)
		((char *) source->mime_types.data + source->mime_types.size);
	while (p < end) {
		weston_log("  %s\n", *p);
		if (strcmp(*p, "text/plain") == 0 ||
		    strcmp(*p, "text/plain;charset=utf-8") == 0)
			has_text_plain = 1;
		p++;
	}

	if (has_text_plain) {
		xcb_set_selection_owner(wm->conn,
					wm->selection_window,
					wm->atom.clipboard,
					XCB_TIME_CURRENT_TIME);
	} else {
		xcb_set_selection_owner(wm->conn,
					XCB_ATOM_NONE,
					wm->atom.clipboard,
					XCB_TIME_CURRENT_TIME);
	}
}

void
weston_wm_selection_init(struct weston_wm *wm)
{
	struct weston_seat *seat;
	uint32_t values[1], mask;

	wm->selection_request.requestor = XCB_NONE;

	values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE;
	wm->selection_window = xcb_generate_id(wm->conn);
	xcb_create_window(wm->conn,
			  XCB_COPY_FROM_PARENT,
			  wm->selection_window,
			  wm->screen->root,
			  0, 0,
			  10, 10,
			  0,
			  XCB_WINDOW_CLASS_INPUT_OUTPUT,
			  wm->screen->root_visual,
			  XCB_CW_EVENT_MASK, values);

	xcb_set_selection_owner(wm->conn,
				wm->selection_window,
				wm->atom.clipboard_manager,
				XCB_TIME_CURRENT_TIME);

	mask =
		XCB_XFIXES_SELECTION_EVENT_MASK_SET_SELECTION_OWNER |
		XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_WINDOW_DESTROY |
		XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_CLIENT_CLOSE;
	xcb_xfixes_select_selection_input(wm->conn, wm->selection_window,
					  wm->atom.clipboard, mask);

	seat = weston_wm_pick_seat(wm);
	wm->selection_listener.notify = weston_wm_set_selection;
	wl_signal_add(&seat->selection_signal, &wm->selection_listener);

	weston_wm_set_selection(&wm->selection_listener, seat);
}