nautilus-3.6.3/libnautilus-private/nautilus-search-directory.c

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  1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
  2 /*
  3    Copyright (C) 2005 Novell, Inc
  4   
  5    This program is free software; you can redistribute it and/or
  6    modify it under the terms of the GNU General Public License as
  7    published by the Free Software Foundation; either version 2 of the
  8    License, or (at your option) any later version.
  9   
 10    This program is distributed in the hope that it will be useful,
 11    but WITHOUT ANY WARRANTY; without even the implied warranty of
 12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 13    General Public License for more details.
 14   
 15    You should have received a copy of the GNU General Public
 16    License along with this program; if not, write to the
 17    Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 18    Boston, MA 02111-1307, USA.
 19   
 20    Author: Anders Carlsson <andersca@imendio.com>
 21 */
 22 
 23 #include <config.h>
 24 #include "nautilus-search-directory.h"
 25 #include "nautilus-search-directory-file.h"
 26 
 27 #include "nautilus-directory-private.h"
 28 #include "nautilus-file.h"
 29 #include "nautilus-file-private.h"
 30 #include "nautilus-file-utilities.h"
 31 #include "nautilus-search-provider.h"
 32 #include "nautilus-search-engine.h"
 33 #include "nautilus-search-engine-model.h"
 34 
 35 #include <eel/eel-glib-extensions.h>
 36 #include <gtk/gtk.h>
 37 #include <gio/gio.h>
 38 #include <string.h>
 39 #include <sys/time.h>
 40 
 41 struct NautilusSearchDirectoryDetails {
 42 	NautilusQuery *query;
 43 	char *saved_search_uri;
 44 	gboolean modified;
 45 
 46 	NautilusSearchEngine *engine;
 47 
 48 	gboolean search_running;
 49 	gboolean search_finished;
 50 
 51 	GList *files;
 52 	GHashTable *files_hash;
 53 
 54 	GList *monitor_list;
 55 	GList *callback_list;
 56 	GList *pending_callback_list;
 57 
 58 	NautilusDirectory *base_model;
 59 };
 60 
 61 typedef struct {
 62 	gboolean monitor_hidden_files;
 63 	NautilusFileAttributes monitor_attributes;
 64 
 65 	gconstpointer client;
 66 } SearchMonitor;
 67 
 68 typedef struct {
 69 	NautilusSearchDirectory *search_directory;
 70 
 71 	NautilusDirectoryCallback callback;
 72 	gpointer callback_data;
 73 
 74 	NautilusFileAttributes wait_for_attributes;
 75 	gboolean wait_for_file_list;
 76 	GList *file_list;
 77 	GHashTable *non_ready_hash;
 78 } SearchCallback;
 79 
 80 enum {
 81 	PROP_0,
 82 	PROP_BASE_MODEL,
 83 	PROP_QUERY,
 84 	NUM_PROPERTIES
 85 };
 86 
 87 G_DEFINE_TYPE (NautilusSearchDirectory, nautilus_search_directory,
 88 	       NAUTILUS_TYPE_DIRECTORY);
 89 
 90 static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
 91 
 92 static void search_engine_hits_added (NautilusSearchEngine *engine, GList *hits, NautilusSearchDirectory *search);
 93 static void search_engine_finished (NautilusSearchEngine *engine, NautilusSearchDirectory *search);
 94 static void search_engine_error (NautilusSearchEngine *engine, const char *error, NautilusSearchDirectory *search);
 95 static void search_callback_file_ready_callback (NautilusFile *file, gpointer data);
 96 static void file_changed (NautilusFile *file, NautilusSearchDirectory *search);
 97 
 98 static void
 99 reset_file_list (NautilusSearchDirectory *search)
100 {
101 	GList *list, *monitor_list;
102 	NautilusFile *file;
103 	SearchMonitor *monitor;
104 
105 	/* Remove file connections */
106 	for (list = search->details->files; list != NULL; list = list->next) {
107 		file = list->data;
108 
109 		/* Disconnect change handler */
110 		g_signal_handlers_disconnect_by_func (file, file_changed, search);
111 
112 		/* Remove monitors */
113 		for (monitor_list = search->details->monitor_list; monitor_list; 
114 		     monitor_list = monitor_list->next) {
115 			monitor = monitor_list->data;
116 			nautilus_file_monitor_remove (file, monitor);
117 		}
118 	}
119 	
120 	nautilus_file_list_free (search->details->files);
121 	search->details->files = NULL;
122 
123 	g_hash_table_remove_all (search->details->files_hash);
124 }
125 
126 static void
127 set_hidden_files (NautilusSearchDirectory *search)
128 {
129 	GList *l;
130 	SearchMonitor *monitor;
131 	gboolean monitor_hidden = FALSE;
132 
133 	for (l = search->details->monitor_list; l != NULL; l = l->next) {
134 		monitor = l->data;
135 		monitor_hidden |= monitor->monitor_hidden_files;
136 
137 		if (monitor_hidden) {
138 			break;
139 		}
140 	}
141 
142 	nautilus_query_set_show_hidden_files (search->details->query, monitor_hidden);
143 }
144 
145 static void
146 start_search (NautilusSearchDirectory *search)
147 {
148 	NautilusSearchEngineModel *model_provider;
149 
150 	if (!search->details->query) {
151 		return;
152 	}
153 
154 	if (search->details->search_running) {
155 		return;
156 	}
157 
158 	if (!search->details->monitor_list && !search->details->pending_callback_list) {
159 		return;
160 	}
161 
162 	/* We need to start the search engine */
163 	search->details->search_running = TRUE;
164 	search->details->search_finished = FALSE;
165 
166 	set_hidden_files (search);
167 	nautilus_search_provider_set_query (NAUTILUS_SEARCH_PROVIDER (search->details->engine),
168 					    search->details->query);
169 
170 	model_provider = nautilus_search_engine_get_model_provider (search->details->engine);
171 	nautilus_search_engine_model_set_model (model_provider, search->details->base_model);
172 
173 	reset_file_list (search);
174 
175 	nautilus_search_provider_start (NAUTILUS_SEARCH_PROVIDER (search->details->engine));
176 }
177 
178 static void
179 stop_search (NautilusSearchDirectory *search)
180 {
181 	if (!search->details->search_running) {
182 		return;
183 	}
184 
185 	search->details->search_running = FALSE;
186 	nautilus_search_provider_stop (NAUTILUS_SEARCH_PROVIDER (search->details->engine));
187 
188 	reset_file_list (search);
189 }
190 
191 static void
192 file_changed (NautilusFile *file, NautilusSearchDirectory *search)
193 {
194 	GList list;
195 
196 	list.data = file;
197 	list.next = NULL;
198 
199 	nautilus_directory_emit_files_changed (NAUTILUS_DIRECTORY (search), &list);
200 }
201 
202 static void
203 search_monitor_add (NautilusDirectory *directory,
204 		    gconstpointer client,
205 		    gboolean monitor_hidden_files,
206 		    NautilusFileAttributes file_attributes,
207 		    NautilusDirectoryCallback callback,
208 		    gpointer callback_data)
209 {
210 	GList *list;
211 	SearchMonitor *monitor;
212 	NautilusSearchDirectory *search;
213 	NautilusFile *file;
214 
215 	search = NAUTILUS_SEARCH_DIRECTORY (directory);
216 
217 	monitor = g_new0 (SearchMonitor, 1);
218 	monitor->monitor_hidden_files = monitor_hidden_files;
219 	monitor->monitor_attributes = file_attributes;
220 	monitor->client = client;
221 
222 	search->details->monitor_list = g_list_prepend (search->details->monitor_list, monitor);
223 	
224 	if (callback != NULL) {
225 		(* callback) (directory, search->details->files, callback_data);
226 	}
227 	
228 	for (list = search->details->files; list != NULL; list = list->next) {
229 		file = list->data;
230 
231 		/* Add monitors */
232 		nautilus_file_monitor_add (file, monitor, file_attributes);
233 	}
234 
235 	start_search (search);
236 }
237 
238 static void
239 search_monitor_remove_file_monitors (SearchMonitor *monitor, NautilusSearchDirectory *search)
240 {
241 	GList *list;
242 	NautilusFile *file;
243 	
244 	for (list = search->details->files; list != NULL; list = list->next) {
245 		file = list->data;
246 
247 		nautilus_file_monitor_remove (file, monitor);
248 	}
249 }
250 
251 static void
252 search_monitor_destroy (SearchMonitor *monitor, NautilusSearchDirectory *search)
253 {
254 	search_monitor_remove_file_monitors (monitor, search);
255 
256 	g_free (monitor);
257 }
258 
259 static void
260 search_monitor_remove (NautilusDirectory *directory,
261 		       gconstpointer client)
262 {
263 	NautilusSearchDirectory *search;
264 	SearchMonitor *monitor;
265 	GList *list;
266 
267 	search = NAUTILUS_SEARCH_DIRECTORY (directory);
268 
269 	for (list = search->details->monitor_list; list != NULL; list = list->next) {
270 		monitor = list->data;
271 
272 		if (monitor->client == client) {
273 			search->details->monitor_list = g_list_delete_link (search->details->monitor_list, list);
274 
275 			search_monitor_destroy (monitor, search);
276 
277 			break;
278 		}
279 	}
280 
281 	if (!search->details->monitor_list) {
282 		stop_search (search);
283 	}
284 }
285 
286 static void
287 cancel_call_when_ready (gpointer key, gpointer value, gpointer user_data)
288 {
289 	SearchCallback *search_callback;
290 	NautilusFile *file;
291 
292 	file = key;
293 	search_callback = user_data;
294 
295 	nautilus_file_cancel_call_when_ready (file, search_callback_file_ready_callback,
296 					      search_callback);
297 }
298 
299 static void
300 search_callback_destroy (SearchCallback *search_callback)
301 {
302 	if (search_callback->non_ready_hash) {
303 		g_hash_table_foreach (search_callback->non_ready_hash, cancel_call_when_ready, search_callback);
304 		g_hash_table_destroy (search_callback->non_ready_hash);
305 	}
306 
307 	nautilus_file_list_free (search_callback->file_list);
308 
309 	g_free (search_callback);
310 }
311 
312 static void
313 search_callback_invoke_and_destroy (SearchCallback *search_callback)
314 {
315 	search_callback->callback (NAUTILUS_DIRECTORY (search_callback->search_directory),
316 				   search_callback->file_list,
317 				   search_callback->callback_data);
318 
319 	search_callback->search_directory->details->callback_list = 
320 		g_list_remove (search_callback->search_directory->details->callback_list, search_callback);
321 
322 	search_callback_destroy (search_callback);
323 }
324 
325 static void
326 search_callback_file_ready_callback (NautilusFile *file, gpointer data)
327 {
328 	SearchCallback *search_callback = data;
329 	
330 	g_hash_table_remove (search_callback->non_ready_hash, file);
331 
332 	if (g_hash_table_size (search_callback->non_ready_hash) == 0) {
333 		search_callback_invoke_and_destroy (search_callback);
334 	}
335 }
336 
337 static void
338 search_callback_add_file_callbacks (SearchCallback *callback)
339 {
340 	GList *file_list_copy, *list;
341 	NautilusFile *file;
342 
343 	file_list_copy = g_list_copy (callback->file_list);
344 
345 	for (list = file_list_copy; list != NULL; list = list->next) {
346 		file = list->data;
347 
348 		nautilus_file_call_when_ready (file,
349 					       callback->wait_for_attributes,
350 					       search_callback_file_ready_callback,
351 					       callback);
352 	}
353 	g_list_free (file_list_copy);
354 }
355 	 
356 static SearchCallback *
357 search_callback_find (NautilusSearchDirectory *search, NautilusDirectoryCallback callback, gpointer callback_data)
358 {
359 	SearchCallback *search_callback;
360 	GList *list;
361 
362 	for (list = search->details->callback_list; list != NULL; list = list->next) {
363 		search_callback = list->data;
364 
365 		if (search_callback->callback == callback &&
366 		    search_callback->callback_data == callback_data) {
367 			return search_callback;
368 		}
369 	}
370 	
371 	return NULL;
372 }
373 
374 static SearchCallback *
375 search_callback_find_pending (NautilusSearchDirectory *search, NautilusDirectoryCallback callback, gpointer callback_data)
376 {
377 	SearchCallback *search_callback;
378 	GList *list;
379 
380 	for (list = search->details->pending_callback_list; list != NULL; list = list->next) {
381 		search_callback = list->data;
382 
383 		if (search_callback->callback == callback &&
384 		    search_callback->callback_data == callback_data) {
385 			return search_callback;
386 		}
387 	}
388 	
389 	return NULL;
390 }
391 
392 static GHashTable *
393 file_list_to_hash_table (GList *file_list)
394 {
395 	GList *list;
396 	GHashTable *table;
397 
398 	if (!file_list)
399 		return NULL;
400 
401 	table = g_hash_table_new (NULL, NULL);
402 
403 	for (list = file_list; list != NULL; list = list->next) {
404 		g_hash_table_insert (table, list->data, list->data);
405 	}
406 
407 	return table;
408 }
409 
410 static void
411 search_call_when_ready (NautilusDirectory *directory,
412 			NautilusFileAttributes file_attributes,
413 			gboolean wait_for_file_list,
414 			NautilusDirectoryCallback callback,
415 			gpointer callback_data)
416 {
417 	NautilusSearchDirectory *search;
418 	SearchCallback *search_callback;
419 
420 	search = NAUTILUS_SEARCH_DIRECTORY (directory);
421 
422 	search_callback = search_callback_find (search, callback, callback_data);
423 	if (search_callback == NULL) {
424 		search_callback = search_callback_find_pending (search, callback, callback_data);
425 	}
426 	
427 	if (search_callback) {
428 		g_warning ("tried to add a new callback while an old one was pending");
429 		return;
430 	}
431 
432 	search_callback = g_new0 (SearchCallback, 1);
433 	search_callback->search_directory = search;
434 	search_callback->callback = callback;
435 	search_callback->callback_data = callback_data;
436 	search_callback->wait_for_attributes = file_attributes;
437 	search_callback->wait_for_file_list = wait_for_file_list;
438 
439 	if (wait_for_file_list && !search->details->search_finished) {
440 		/* Add it to the pending callback list, which will be
441 		 * processed when the directory has finished loading
442 		 */
443 		search->details->pending_callback_list = 
444 			g_list_prepend (search->details->pending_callback_list, search_callback);
445 
446 		/* We might need to start the search engine */
447 		start_search (search);
448 	} else {
449 		search_callback->file_list = nautilus_file_list_copy (search->details->files);
450 		search_callback->non_ready_hash = file_list_to_hash_table (search->details->files);
451 
452 		if (!search_callback->non_ready_hash) {
453 			/* If there are no ready files, we invoke the callback
454 			   with an empty list.
455 			*/
456 			search_callback_invoke_and_destroy (search_callback);
457 		} else {
458 			search->details->callback_list = g_list_prepend (search->details->callback_list, search_callback);
459 			search_callback_add_file_callbacks (search_callback);
460 		}
461 	}
462 }
463 
464 static void
465 search_cancel_callback (NautilusDirectory *directory,
466 			NautilusDirectoryCallback callback,
467 			gpointer callback_data)
468 {
469 	NautilusSearchDirectory *search;
470 	SearchCallback *search_callback;
471 
472 	search = NAUTILUS_SEARCH_DIRECTORY (directory);
473 	search_callback = search_callback_find (search, callback, callback_data);
474 	
475 	if (search_callback) {
476 		search->details->callback_list = g_list_remove (search->details->callback_list, search_callback);
477 		
478 		search_callback_destroy (search_callback);
479 		
480 		return;
481 	} 
482 
483 	/* Check for a pending callback */
484 	search_callback = search_callback_find_pending (search, callback, callback_data);
485 
486 	if (search_callback) {
487 		search->details->pending_callback_list = g_list_remove (search->details->pending_callback_list, search_callback);
488 
489 		search_callback_destroy (search_callback);
490 
491 		if (!search->details->pending_callback_list) {
492 			stop_search (search);
493 		}
494 	}
495 }
496 
497 
498 static void
499 search_engine_hits_added (NautilusSearchEngine *engine, GList *hits, 
500 			  NautilusSearchDirectory *search)
501 {
502 	GList *hit_list;
503 	GList *file_list;
504 	NautilusFile *file;
505 	SearchMonitor *monitor;
506 	GList *monitor_list;
507 
508 	file_list = NULL;
509 
510 	for (hit_list = hits; hit_list != NULL; hit_list = hit_list->next) {
511 		NautilusSearchHit *hit = hit_list->data;
512 		const char *uri;
513 
514 		uri = nautilus_search_hit_get_uri (hit);
515 		if (g_str_has_suffix (uri, NAUTILUS_SAVED_SEARCH_EXTENSION)) {
516 			/* Never return saved searches themselves as hits */
517 			continue;
518 		}
519 
520 		nautilus_search_hit_compute_scores (hit, search->details->query);
521 
522 		file = nautilus_file_get_by_uri (uri);
523 		nautilus_file_set_search_relevance (file, nautilus_search_hit_get_relevance (hit));
524 
525 		for (monitor_list = search->details->monitor_list; monitor_list; monitor_list = monitor_list->next) {
526 			monitor = monitor_list->data;
527 
528 			/* Add monitors */
529 			nautilus_file_monitor_add (file, monitor, monitor->monitor_attributes);
530 		}
531 
532 		g_signal_connect (file, "changed", G_CALLBACK (file_changed), search),
533 
534 		file_list = g_list_prepend (file_list, file);
535 		g_hash_table_add (search->details->files_hash, file);
536 	}
537 	
538 	search->details->files = g_list_concat (search->details->files, file_list);
539 
540 	nautilus_directory_emit_files_added (NAUTILUS_DIRECTORY (search), file_list);
541 
542 	file = nautilus_directory_get_corresponding_file (NAUTILUS_DIRECTORY (search));
543 	nautilus_file_emit_changed (file);
544 	nautilus_file_unref (file);
545 }
546 
547 static void
548 search_callback_add_pending_file_callbacks (SearchCallback *callback)
549 {
550 	callback->file_list = nautilus_file_list_copy (callback->search_directory->details->files);
551 	callback->non_ready_hash = file_list_to_hash_table (callback->search_directory->details->files);
552 
553 	search_callback_add_file_callbacks (callback);
554 }
555 
556 static void
557 search_engine_error (NautilusSearchEngine *engine, const char *error_message, NautilusSearchDirectory *search)
558 {
559 	GError *error;
560 
561 	error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_FAILED,
562 				     error_message);
563 	nautilus_directory_emit_load_error (NAUTILUS_DIRECTORY (search),
564 					    error);
565 	g_error_free (error);
566 }
567 
568 static void
569 search_engine_finished (NautilusSearchEngine *engine, NautilusSearchDirectory *search)
570 {
571 	search->details->search_finished = TRUE;
572 
573 	nautilus_directory_emit_done_loading (NAUTILUS_DIRECTORY (search));
574 
575 	/* Add all file callbacks */
576 	g_list_foreach (search->details->pending_callback_list, 
577 			(GFunc)search_callback_add_pending_file_callbacks, NULL);
578 	search->details->callback_list = g_list_concat (search->details->callback_list,
579 							search->details->pending_callback_list);
580 
581 	g_list_free (search->details->pending_callback_list);
582 	search->details->pending_callback_list = NULL;
583 }
584 
585 static void
586 search_force_reload (NautilusDirectory *directory)
587 {
588 	NautilusSearchDirectory *search;
589 
590 	search = NAUTILUS_SEARCH_DIRECTORY (directory);
591 
592 	if (!search->details->query) {
593 		return;
594 	}
595 	
596 	search->details->search_finished = FALSE;
597 
598 	/* Remove file monitors */
599 	reset_file_list (search);
600 	stop_search (search);
601 }
602 
603 static gboolean
604 search_are_all_files_seen (NautilusDirectory *directory)
605 {
606 	NautilusSearchDirectory *search;
607 
608 	search = NAUTILUS_SEARCH_DIRECTORY (directory);
609 
610 	return (!search->details->query ||
611 		search->details->search_finished);
612 }
613 
614 static gboolean
615 search_contains_file (NautilusDirectory *directory,
616 		      NautilusFile *file)
617 {
618 	NautilusSearchDirectory *search;
619 
620 	search = NAUTILUS_SEARCH_DIRECTORY (directory);
621 	return (g_hash_table_lookup (search->details->files_hash, file) != NULL);
622 }
623 
624 static GList *
625 search_get_file_list (NautilusDirectory *directory)
626 {
627 	NautilusSearchDirectory *search;
628 
629 	search = NAUTILUS_SEARCH_DIRECTORY (directory);
630 
631 	return nautilus_file_list_copy (search->details->files);
632 }
633 
634 
635 static gboolean
636 search_is_editable (NautilusDirectory *directory)
637 {
638 	return FALSE;
639 }
640 
641 static void
642 search_set_property (GObject *object,
643 		     guint property_id,
644 		     const GValue *value,
645 		     GParamSpec *pspec)
646 {
647 	NautilusSearchDirectory *search = NAUTILUS_SEARCH_DIRECTORY (object);
648 
649 	switch (property_id) {
650 	case PROP_BASE_MODEL:
651 		nautilus_search_directory_set_base_model (search, g_value_get_object (value));
652 		break;
653 	case PROP_QUERY:
654 		nautilus_search_directory_set_query (search, g_value_get_object (value));
655 		break;
656 	default:
657 		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
658 		break;
659 	}
660 }
661 
662 static void
663 search_get_property (GObject *object,
664 		     guint property_id,
665 		     GValue *value,
666 		     GParamSpec *pspec)
667 {
668 	NautilusSearchDirectory *search = NAUTILUS_SEARCH_DIRECTORY (object);
669 
670 	switch (property_id) {
671 	case PROP_BASE_MODEL:
672 		g_value_set_object (value, nautilus_search_directory_get_base_model (search));
673 		break;
674 	case PROP_QUERY:
675 		g_value_take_object (value, nautilus_search_directory_get_query (search));
676 		break;
677 	default:
678 		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
679 		break;
680 	}
681 }
682 
683 static void
684 clear_base_model (NautilusSearchDirectory *search)
685 {
686 	if (search->details->base_model != NULL) {
687 		nautilus_directory_file_monitor_remove (search->details->base_model,
688 							&search->details->base_model);
689 		g_clear_object (&search->details->base_model);
690 	}
691 }
692 
693 static void
694 search_dispose (GObject *object)
695 {
696 	NautilusSearchDirectory *search;
697 	GList *list;
698 
699 	search = NAUTILUS_SEARCH_DIRECTORY (object);
700 
701 	clear_base_model (search);
702 
703 	/* Remove search monitors */
704 	if (search->details->monitor_list) {
705 		for (list = search->details->monitor_list; list != NULL; list = list->next) {
706 			search_monitor_destroy ((SearchMonitor *)list->data, search);
707 		}
708 
709 		g_list_free (search->details->monitor_list);
710 		search->details->monitor_list = NULL;
711 	}
712 
713 	reset_file_list (search);
714 	
715 	if (search->details->callback_list) {
716 		/* Remove callbacks */
717 		g_list_foreach (search->details->callback_list,
718 				(GFunc)search_callback_destroy, NULL);
719 		g_list_free (search->details->callback_list);
720 		search->details->callback_list = NULL;
721 	}
722 
723 	if (search->details->pending_callback_list) {
724 		g_list_foreach (search->details->pending_callback_list,
725 				(GFunc)search_callback_destroy, NULL);
726 		g_list_free (search->details->pending_callback_list);
727 		search->details->pending_callback_list = NULL;
728 	}
729 
730 	g_clear_object (&search->details->query);
731 	stop_search (search);
732 
733 	g_clear_object (&search->details->engine);
734 	
735 	G_OBJECT_CLASS (nautilus_search_directory_parent_class)->dispose (object);
736 }
737 
738 static void
739 search_finalize (GObject *object)
740 {
741 	NautilusSearchDirectory *search;
742 
743 	search = NAUTILUS_SEARCH_DIRECTORY (object);
744 	g_free (search->details->saved_search_uri);
745 
746 	g_hash_table_destroy (search->details->files_hash);
747 
748 	G_OBJECT_CLASS (nautilus_search_directory_parent_class)->finalize (object);
749 }
750 
751 static void
752 nautilus_search_directory_init (NautilusSearchDirectory *search)
753 {
754 	search->details = G_TYPE_INSTANCE_GET_PRIVATE (search, NAUTILUS_TYPE_SEARCH_DIRECTORY,
755 						       NautilusSearchDirectoryDetails);
756 
757 	search->details->files_hash = g_hash_table_new (g_direct_hash, g_direct_equal);
758 
759 	search->details->engine = nautilus_search_engine_new ();
760 	g_signal_connect (search->details->engine, "hits-added",
761 			  G_CALLBACK (search_engine_hits_added),
762 			  search);
763 	g_signal_connect (search->details->engine, "finished",
764 			  G_CALLBACK (search_engine_finished),
765 			  search);
766 	g_signal_connect (search->details->engine, "error",
767 			  G_CALLBACK (search_engine_error),
768 			  search);
769 }
770 
771 static void
772 nautilus_search_directory_class_init (NautilusSearchDirectoryClass *class)
773 {
774 	NautilusDirectoryClass *directory_class = NAUTILUS_DIRECTORY_CLASS (class);
775 	GObjectClass *oclass = G_OBJECT_CLASS (class);
776 
777 	oclass->dispose = search_dispose;
778 	oclass->finalize = search_finalize;
779 	oclass->get_property = search_get_property;
780 	oclass->set_property = search_set_property;
781 
782  	directory_class->are_all_files_seen = search_are_all_files_seen;
783 	directory_class->contains_file = search_contains_file;
784 	directory_class->force_reload = search_force_reload;
785 	directory_class->call_when_ready = search_call_when_ready;
786 	directory_class->cancel_callback = search_cancel_callback;
787 
788 	directory_class->file_monitor_add = search_monitor_add;
789 	directory_class->file_monitor_remove = search_monitor_remove;
790 	
791 	directory_class->get_file_list = search_get_file_list;
792 	directory_class->is_editable = search_is_editable;
793 
794 	properties[PROP_BASE_MODEL] =
795 		g_param_spec_object ("base-model",
796 				     "The base model",
797 				     "The base directory model for this directory",
798 				     NAUTILUS_TYPE_DIRECTORY,
799 				     G_PARAM_READWRITE);
800 	properties[PROP_QUERY] =
801 		g_param_spec_object ("query",
802 				     "The query",
803 				     "The query for this search directory",
804 				     NAUTILUS_TYPE_QUERY,
805 				     G_PARAM_READWRITE);
806 
807 	g_object_class_install_properties (oclass, NUM_PROPERTIES, properties);
808 	g_type_class_add_private (class, sizeof (NautilusSearchDirectoryDetails));
809 }
810 
811 void
812 nautilus_search_directory_set_base_model (NautilusSearchDirectory *search,
813 					  NautilusDirectory *base_model)
814 {
815 	if (search->details->base_model == base_model) {
816 		return;
817 	}
818 
819 	if (search->details->query != NULL) {
820 		gchar *uri;
821 		GFile *query_location, *model_location;
822 		gboolean is_equal;
823 
824 		uri = nautilus_query_get_location (search->details->query);
825 		query_location = g_file_new_for_uri (uri);
826 		model_location = nautilus_directory_get_location (base_model);
827 
828 		is_equal = g_file_equal (model_location, query_location);
829 
830 		g_object_unref (model_location);
831 		g_object_unref (query_location);
832 		g_free (uri);
833 
834 		if (!is_equal) {
835 			return;
836 		}
837 	}
838 
839 	clear_base_model (search);
840 	search->details->base_model = nautilus_directory_ref (base_model);
841 
842 	if (search->details->base_model != NULL) {
843 		nautilus_directory_file_monitor_add (base_model, &search->details->base_model,
844 						     TRUE, NAUTILUS_FILE_ATTRIBUTE_INFO,
845 						     NULL, NULL);
846 	}
847 
848 	g_object_notify_by_pspec (G_OBJECT (search), properties[PROP_BASE_MODEL]);
849 }
850 
851 NautilusDirectory *
852 nautilus_search_directory_get_base_model (NautilusSearchDirectory *search)
853 {
854 	return search->details->base_model;
855 }
856 
857 char *
858 nautilus_search_directory_generate_new_uri (void)
859 {
860 	static int counter = 0;
861 	char *uri;
862 
863 	uri = g_strdup_printf (EEL_SEARCH_URI"//%d/", counter++);
864 
865 	return uri;
866 }
867 
868 void
869 nautilus_search_directory_set_query (NautilusSearchDirectory *search,
870 				     NautilusQuery *query)
871 {
872 	NautilusFile *file;
873 
874 	if (search->details->query != query) {
875 		search->details->modified = TRUE;
876 
877 		g_object_ref (query);
878 		g_clear_object (&search->details->query);
879 		search->details->query = query;
880 
881 		g_object_notify_by_pspec (G_OBJECT (search), properties[PROP_QUERY]);
882 	}
883 
884 	file = nautilus_directory_get_existing_corresponding_file (NAUTILUS_DIRECTORY (search));
885 	if ((file != NULL) && (search->details->saved_search_uri == NULL)) {
886 		nautilus_search_directory_file_update_display_name (NAUTILUS_SEARCH_DIRECTORY_FILE (file));
887 	}
888 	nautilus_file_unref (file);
889 }
890 
891 NautilusQuery *
892 nautilus_search_directory_get_query (NautilusSearchDirectory *search)
893 {
894 	if (search->details->query != NULL) {
895 		return g_object_ref (search->details->query);
896 	}
897 					   
898 	return NULL;
899 }
900 
901 void
902 nautilus_search_directory_set_saved_search (NautilusSearchDirectory *search,
903 					    GFile *saved_search)
904 {
905 	NautilusQuery *query;
906 	char *file;
907 
908 	search->details->saved_search_uri = g_file_get_uri (saved_search);
909 	file = g_file_get_path (saved_search);
910 
911 	if (file != NULL) {
912 		query = nautilus_query_load (file);
913 		if (query != NULL) {
914 			nautilus_search_directory_set_query (search, query);
915 			g_object_unref (query);
916 		}
917 		g_free (file);
918 	} else {
919 		g_warning ("Non-local saved searches not supported");
920 	}
921 
922 	search->details->modified = FALSE;
923 }
924 
925 gboolean
926 nautilus_search_directory_is_saved_search (NautilusSearchDirectory *search)
927 {
928 	return search->details->saved_search_uri != NULL;
929 }
930 
931 gboolean
932 nautilus_search_directory_is_modified (NautilusSearchDirectory *search)
933 {
934 	return search->details->modified;
935 }
936 
937 void
938 nautilus_search_directory_save_to_file (NautilusSearchDirectory *search,
939 					const char              *save_file_uri)
940 {
941 	char *file;
942 	
943 	file = g_filename_from_uri (save_file_uri, NULL, NULL);
944 	if (file == NULL) {
945 		return;
946 	}
947 
948 	if (search->details->query != NULL) {
949 		nautilus_query_save (search->details->query, file);
950 	}
951 	
952 	g_free (file);
953 }
954 
955 void
956 nautilus_search_directory_save_search (NautilusSearchDirectory *search)
957 {
958 	if (search->details->saved_search_uri == NULL) {
959 		return;
960 	}
961 
962 	nautilus_search_directory_save_to_file (search,
963 						search->details->saved_search_uri);
964 	search->details->modified = FALSE;
965 }