summaryrefslogtreecommitdiff
path: root/nautilus-desktop/nautilus-desktop-directory-file.c
blob: 08c98c7b7719b381668bd0875ccaf1ebfbf8a242 (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
/*
   nautilus-desktop-directory-file.c: Subclass of NautilusFile to help implement the
   virtual desktop.
 
   Copyright (C) 2003 Red Hat, Inc.
  
   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.
  
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.
  
   You should have received a copy of the GNU General Public
   License along with this program; if not, see <http://www.gnu.org/licenses/>.
  
   Author: Alexander Larsson <alexl@redhat.com>
*/

#include <config.h>
#include "nautilus-desktop-directory-file.h"
#include "nautilus-desktop-metadata.h"
#include "nautilus-desktop-directory.h"

#include <src/nautilus-directory-notify.h>
#include <src/nautilus-directory-private.h>
#include <src/nautilus-file-attributes.h>
#include <src/nautilus-file-private.h>
#include <src/nautilus-file-utilities.h>
#include <src/nautilus-metadata.h>

#include <eel/eel-glib-extensions.h>
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <string.h>

struct NautilusDesktopDirectoryFileDetails {
	NautilusDesktopDirectory *desktop_directory;

  	NautilusFile *real_dir_file;

	GHashTable *callbacks;
	GHashTable *monitors;
};

typedef struct {
	NautilusDesktopDirectoryFile *desktop_file;
	NautilusFileCallback callback;
	gpointer callback_data;

	NautilusFileAttributes delegated_attributes;
	NautilusFileAttributes non_delegated_attributes;

	GList *non_ready_files;

	gboolean initializing;
} DesktopCallback;

typedef struct {
	NautilusDesktopDirectoryFile *desktop_file;

	NautilusFileAttributes delegated_attributes;
	NautilusFileAttributes non_delegated_attributes;
} DesktopMonitor;

G_DEFINE_TYPE (NautilusDesktopDirectoryFile, nautilus_desktop_directory_file,
	       NAUTILUS_TYPE_FILE);

static guint
desktop_callback_hash (gconstpointer desktop_callback_as_pointer)
{
	const DesktopCallback *desktop_callback;

	desktop_callback = desktop_callback_as_pointer;
	return GPOINTER_TO_UINT (desktop_callback->callback)
		^ GPOINTER_TO_UINT (desktop_callback->callback_data);
}

static gboolean
desktop_callback_equal (gconstpointer desktop_callback_as_pointer,
		      gconstpointer desktop_callback_as_pointer_2)
{
	const DesktopCallback *desktop_callback, *desktop_callback_2;

	desktop_callback = desktop_callback_as_pointer;
	desktop_callback_2 = desktop_callback_as_pointer_2;

	return desktop_callback->callback == desktop_callback_2->callback
		&& desktop_callback->callback_data == desktop_callback_2->callback_data;
}

     
static void
real_file_changed_callback (NautilusFile *real_file,
			    gpointer callback_data)
{
	NautilusDesktopDirectoryFile *desktop_file;
	
	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (callback_data);
	nautilus_file_changed (NAUTILUS_FILE (desktop_file));
}

static NautilusFileAttributes 
get_delegated_attributes_mask (void)
{
	return NAUTILUS_FILE_ATTRIBUTE_DEEP_COUNTS |
		NAUTILUS_FILE_ATTRIBUTE_DIRECTORY_ITEM_COUNT |
		NAUTILUS_FILE_ATTRIBUTE_DIRECTORY_ITEM_MIME_TYPES |
                NAUTILUS_FILE_ATTRIBUTE_INFO;
}

static void
partition_attributes (NautilusFileAttributes attributes,
		      NautilusFileAttributes *delegated_attributes,
		      NautilusFileAttributes *non_delegated_attributes)
{
	NautilusFileAttributes mask;

	mask = get_delegated_attributes_mask ();

	*delegated_attributes = attributes & mask;
	*non_delegated_attributes = attributes & ~mask;
}

static void
desktop_directory_file_monitor_add (NautilusFile *file,
				    gconstpointer client,
				    NautilusFileAttributes attributes)
{
	NautilusDesktopDirectoryFile *desktop_file;
	DesktopMonitor *monitor;

	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file);

	/* Map the client to a unique value so this doesn't interfere
	 * with direct monitoring of the file by the same client.
	 */
	monitor = g_hash_table_lookup (desktop_file->details->monitors, client);
	if (monitor != NULL) {
		g_assert (monitor->desktop_file == desktop_file);
	} else {
		monitor = g_new0 (DesktopMonitor, 1);
		monitor->desktop_file = desktop_file;
		g_hash_table_insert (desktop_file->details->monitors,
				     (gpointer) client, monitor);
	}

	partition_attributes (attributes,
			      &monitor->delegated_attributes,
			      &monitor->non_delegated_attributes);

	/* Pawn off partioned attributes to real dir file */
	nautilus_file_monitor_add (desktop_file->details->real_dir_file,
				   monitor, monitor->delegated_attributes);

	/* Do the rest ourself */
	nautilus_directory_monitor_add_internal
		(file->details->directory, file,
		 client, TRUE,
		 monitor->non_delegated_attributes,
		 NULL, NULL);
}

static void
desktop_directory_file_monitor_remove (NautilusFile *file,
				       gconstpointer client)
{
	NautilusDesktopDirectoryFile *desktop_file;
	DesktopMonitor *monitor;
	
	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file);
	
	/* Map the client to the value used by the earlier add call. */
        monitor = g_hash_table_lookup (desktop_file->details->monitors, client);
	if (monitor == NULL) {
		return;
	}

	/* Call through to the real file remove calls. */
	g_hash_table_remove (desktop_file->details->monitors, client);

	/* Remove the locally handled parts */
	nautilus_directory_monitor_remove_internal
		(file->details->directory, file, client);
}

static void
desktop_callback_destroy (DesktopCallback *desktop_callback)
{
	g_assert (desktop_callback != NULL);
	g_assert (NAUTILUS_IS_DESKTOP_DIRECTORY_FILE (desktop_callback->desktop_file));

	nautilus_file_unref (NAUTILUS_FILE (desktop_callback->desktop_file));
	g_list_free (desktop_callback->non_ready_files);
	g_free (desktop_callback);
}

static void
desktop_callback_check_done (DesktopCallback *desktop_callback)
{
	/* Check if we are ready. */
	if (desktop_callback->initializing ||
	    desktop_callback->non_ready_files != NULL) {
		return;
	}

	/* Ensure our metadata is updated before calling back */
	nautilus_desktop_update_metadata_from_keyfile (NAUTILUS_FILE (desktop_callback->desktop_file), "directory");

	/* Remove from the hash table before sending it. */
	g_hash_table_remove (desktop_callback->desktop_file->details->callbacks,
			     desktop_callback);

	/* We are ready, so do the real callback. */
	(* desktop_callback->callback) (NAUTILUS_FILE (desktop_callback->desktop_file),
					desktop_callback->callback_data);

	/* And we are done. */
	desktop_callback_destroy (desktop_callback);
}

static void
desktop_callback_remove_file (DesktopCallback *desktop_callback,
			      NautilusFile *file)
{
	desktop_callback->non_ready_files = g_list_remove
		(desktop_callback->non_ready_files, file);
	desktop_callback_check_done (desktop_callback);
}

static void
ready_callback (NautilusFile *file,
		gpointer callback_data)
{
	DesktopCallback *desktop_callback;

	g_assert (NAUTILUS_IS_FILE (file));
	g_assert (callback_data != NULL);

	desktop_callback = callback_data;
	g_assert (g_list_find (desktop_callback->non_ready_files, file) != NULL);

	desktop_callback_remove_file (desktop_callback, file);
}

static void
desktop_directory_file_call_when_ready (NautilusFile *file,
					NautilusFileAttributes attributes,
					NautilusFileCallback callback,
					gpointer callback_data)

{
	NautilusDesktopDirectoryFile *desktop_file;
	DesktopCallback search_key, *desktop_callback;

	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file);

	/* Check to be sure we aren't overwriting. */
	search_key.callback = callback;
	search_key.callback_data = callback_data;
	if (g_hash_table_lookup (desktop_file->details->callbacks, &search_key) != NULL) {
		g_warning ("tried to add a new callback while an old one was pending");
		return;
	}

	/* Create a desktop_callback record. */
	desktop_callback = g_new0 (DesktopCallback, 1);
	nautilus_file_ref (file);
	desktop_callback->desktop_file = desktop_file;
	desktop_callback->callback = callback;
	desktop_callback->callback_data = callback_data;
	desktop_callback->initializing = TRUE;

	partition_attributes (attributes,
			      &desktop_callback->delegated_attributes,
			      &desktop_callback->non_delegated_attributes);

	desktop_callback->non_ready_files = g_list_prepend
		(desktop_callback->non_ready_files, file);
	desktop_callback->non_ready_files = g_list_prepend
		(desktop_callback->non_ready_files, desktop_file->details->real_dir_file);
	
	/* Put it in the hash table. */
	g_hash_table_insert (desktop_file->details->callbacks,
			     desktop_callback, desktop_callback);

	/* Now connect to each file's call_when_ready. */
	nautilus_directory_call_when_ready_internal
		(file->details->directory, file,
		 desktop_callback->non_delegated_attributes,
		 FALSE, NULL, ready_callback, desktop_callback);
	nautilus_file_call_when_ready
			(desktop_file->details->real_dir_file,
			 desktop_callback->delegated_attributes,
			 ready_callback, desktop_callback);

	desktop_callback->initializing = FALSE;

	/* Check if any files became read while we were connecting up
	 * the call_when_ready callbacks (also handles the pathological
	 * case where there are no files at all).
	 */
	desktop_callback_check_done (desktop_callback);

}

static void
desktop_directory_file_cancel_call_when_ready (NautilusFile *file,
					       NautilusFileCallback callback,
					       gpointer callback_data)
{
	NautilusDesktopDirectoryFile *desktop_file;
	DesktopCallback search_key, *desktop_callback;

	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file);

	/* Find the entry in the table. */
	search_key.callback = callback;
	search_key.callback_data = callback_data;
	desktop_callback = g_hash_table_lookup (desktop_file->details->callbacks, &search_key);
	if (desktop_callback == NULL) {
		return;
	}

	/* Remove from the hash table before working with it. */
	g_hash_table_remove (desktop_callback->desktop_file->details->callbacks, desktop_callback);

	/* Tell the real directory to cancel the call. */
	nautilus_directory_cancel_callback_internal
		(file->details->directory, file,
		 NULL, ready_callback, desktop_callback);
	
	nautilus_file_cancel_call_when_ready
		(desktop_file->details->real_dir_file,
		 ready_callback, desktop_callback);
	
	desktop_callback_destroy (desktop_callback);
}

static gboolean
real_check_if_ready (NautilusFile *file,
		     NautilusFileAttributes attributes)
{
	return nautilus_directory_check_if_ready_internal
		(file->details->directory, file,
		 attributes);
}

static gboolean
desktop_directory_file_check_if_ready (NautilusFile *file,
				       NautilusFileAttributes attributes)
{
	NautilusFileAttributes delegated_attributes, non_delegated_attributes;
	NautilusDesktopDirectoryFile *desktop_file;

	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file);

	partition_attributes (attributes,
			      &delegated_attributes,
			      &non_delegated_attributes);

	return real_check_if_ready (file, non_delegated_attributes) &&
		nautilus_file_check_if_ready (desktop_file->details->real_dir_file,
					      delegated_attributes);
}

static gboolean
desktop_directory_file_get_item_count (NautilusFile *file, 
				       guint *count,
				       gboolean *count_unreadable)
{
	NautilusDesktopDirectoryFile *desktop_file;
	gboolean got_count;
	
	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file);
	
	got_count = nautilus_file_get_directory_item_count (desktop_file->details->real_dir_file,
							    count,
							    count_unreadable);

	if (count) {
		*count += g_list_length (file->details->directory->details->file_list);
	}
	
	return got_count;
}

static NautilusRequestStatus
desktop_directory_file_get_deep_counts (NautilusFile *file,
					guint *directory_count,
					guint *file_count,
					guint *unreadable_directory_count,
					goffset *total_size)
{
	NautilusDesktopDirectoryFile *desktop_file;
	NautilusRequestStatus status;

	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file);
	
	status = nautilus_file_get_deep_counts (desktop_file->details->real_dir_file,
						directory_count,
						file_count,
						unreadable_directory_count,
						total_size,
						TRUE);

	if (file_count) {
		*file_count += g_list_length (file->details->directory->details->file_list);
	}
	
	return status;
}

static gboolean
desktop_directory_file_get_date (NautilusFile *file,
				 NautilusDateType date_type,
				 time_t *date)
{
	NautilusDesktopDirectoryFile *desktop_file;

	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file);

	return nautilus_file_get_date (desktop_file->details->real_dir_file,
				       date_type,
				       date);
}

static char *
desktop_directory_file_get_where_string (NautilusFile *file)
{
	return g_strdup (_("on the desktop"));
}


static void
monitor_destroy (gpointer data)
{
	DesktopMonitor *monitor = data;
	
	nautilus_file_monitor_remove
		(NAUTILUS_FILE (monitor->desktop_file->details->real_dir_file), monitor);
	g_free (monitor);
}

static void
nautilus_desktop_directory_file_set_metadata (NautilusFile           *file,
					      const char             *key,
					      const char             *value)
{
	nautilus_desktop_set_metadata_string (file, "directory", key, value);
}

static void
nautilus_desktop_directory_file_set_metadata_as_list (NautilusFile           *file,
						      const char             *key,
						      char                  **value)
{
	nautilus_desktop_set_metadata_stringv (file, "directory", key, (const gchar **) value);
}

static void
nautilus_desktop_directory_file_init (NautilusDesktopDirectoryFile *desktop_file)
{
	NautilusDesktopDirectory *desktop_directory;
	NautilusDirectory *real_dir;
	NautilusFile *real_dir_file;

	desktop_file->details = G_TYPE_INSTANCE_GET_PRIVATE (desktop_file,
							     NAUTILUS_TYPE_DESKTOP_DIRECTORY_FILE,
							     NautilusDesktopDirectoryFileDetails);

	desktop_directory = NAUTILUS_DESKTOP_DIRECTORY (nautilus_directory_get_by_uri (EEL_DESKTOP_URI));
	desktop_file->details->desktop_directory = desktop_directory;

	desktop_file->details->callbacks = g_hash_table_new
		(desktop_callback_hash, desktop_callback_equal);
	desktop_file->details->monitors = g_hash_table_new_full (NULL, NULL,
								 NULL, monitor_destroy);

	real_dir = nautilus_desktop_directory_get_real_directory (desktop_directory);
	real_dir_file = nautilus_directory_get_corresponding_file (real_dir);
	nautilus_directory_unref (real_dir);
	
	desktop_file->details->real_dir_file = real_dir_file;
	g_signal_connect_object (real_dir_file, "changed",
				 G_CALLBACK (real_file_changed_callback), desktop_file, 0);
}


static void
desktop_callback_remove_file_cover (gpointer key,
				    gpointer value,
				    gpointer callback_data)
{
	desktop_callback_remove_file
		(value, NAUTILUS_FILE (callback_data));
}


static void
desktop_finalize (GObject *object)
{
	NautilusDesktopDirectoryFile *desktop_file;
	NautilusDesktopDirectory *desktop_directory;

	desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (object);
	desktop_directory = desktop_file->details->desktop_directory;

	/* Todo: ghash now safe? */
	eel_g_hash_table_safe_for_each
		(desktop_file->details->callbacks,
		 desktop_callback_remove_file_cover,
		 desktop_file->details->real_dir_file);
	
	if (g_hash_table_size (desktop_file->details->callbacks) != 0) {
		g_warning ("call_when_ready still pending when desktop virtual file is destroyed");
	}

	g_hash_table_destroy (desktop_file->details->callbacks);
	g_hash_table_destroy (desktop_file->details->monitors);

	nautilus_file_unref (desktop_file->details->real_dir_file);
	nautilus_directory_unref (NAUTILUS_DIRECTORY (desktop_directory));

	G_OBJECT_CLASS (nautilus_desktop_directory_file_parent_class)->finalize (object);
}

static void
nautilus_desktop_directory_file_class_init (NautilusDesktopDirectoryFileClass *klass)
{
	GObjectClass *object_class;
	NautilusFileClass *file_class;

	object_class = G_OBJECT_CLASS (klass);
	file_class = NAUTILUS_FILE_CLASS (klass);
	
	object_class->finalize = desktop_finalize;

	file_class->default_file_type = G_FILE_TYPE_DIRECTORY;
	
	file_class->monitor_add = desktop_directory_file_monitor_add;
	file_class->monitor_remove = desktop_directory_file_monitor_remove;
	file_class->call_when_ready = desktop_directory_file_call_when_ready;
	file_class->cancel_call_when_ready = desktop_directory_file_cancel_call_when_ready;
	file_class->check_if_ready = desktop_directory_file_check_if_ready;
	file_class->get_item_count = desktop_directory_file_get_item_count;
	file_class->get_deep_counts = desktop_directory_file_get_deep_counts;
	file_class->get_date = desktop_directory_file_get_date;
	file_class->get_where_string = desktop_directory_file_get_where_string;
	file_class->set_metadata = nautilus_desktop_directory_file_set_metadata;
	file_class->set_metadata_as_list = nautilus_desktop_directory_file_set_metadata_as_list;

	g_type_class_add_private (klass, sizeof (NautilusDesktopDirectoryFileDetails));
}