1 /* GTK - The GIMP Toolkit
2 * gtkrecentfilter.h - Filter object for recently used resources
3 * Copyright (C) 2006, Emmanuele Bassi
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library 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 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
24 #include "gtkrecentfilter.h"
26 #include "gtkprivate.h"
31 #define XDG_PREFIX _gtk_xdg
32 #include "xdgmime/xdgmime.h"
35 typedef struct _GtkRecentFilterClass GtkRecentFilterClass;
36 typedef struct _FilterRule FilterRule;
40 FILTER_RULE_DISPLAY_NAME,
41 FILTER_RULE_MIME_TYPE,
42 FILTER_RULE_PIXBUF_FORMATS,
43 FILTER_RULE_APPLICATION,
49 struct _GtkRecentFilter
51 GtkObject parent_instance;
56 GtkRecentFilterFlags needed;
59 struct _GtkRecentFilterClass
61 GtkObjectClass parent_class;
67 GtkRecentFilterFlags needed;
73 GSList *pixbuf_formats;
78 GtkRecentFilterFunc func;
80 GDestroyNotify data_destroy;
85 G_DEFINE_TYPE (GtkRecentFilter, gtk_recent_filter, GTK_TYPE_OBJECT)
89 filter_rule_free (FilterRule *rule)
93 case FILTER_RULE_MIME_TYPE:
94 g_free (rule->u.mime_type);
99 case FILTER_RULE_DISPLAY_NAME:
100 g_free (rule->u.pattern);
102 case FILTER_RULE_PIXBUF_FORMATS:
103 g_slist_free (rule->u.pixbuf_formats);
105 case FILTER_RULE_AGE:
107 case FILTER_RULE_APPLICATION:
108 g_free (rule->u.application);
110 case FILTER_RULE_GROUP:
111 g_free (rule->u.group);
113 case FILTER_RULE_CUSTOM:
114 if (rule->u.custom.data_destroy)
115 rule->u.custom.data_destroy (rule->u.custom.data);
118 g_assert_not_reached ();
126 gtk_recent_filter_finalize (GObject *object)
128 GtkRecentFilter *filter = GTK_RECENT_FILTER (object);
130 g_free (filter->name);
134 g_slist_foreach (filter->rules,
135 (GFunc) filter_rule_free,
137 g_slist_free (filter->rules);
140 G_OBJECT_CLASS (gtk_recent_filter_parent_class)->finalize (object);
144 gtk_recent_filter_class_init (GtkRecentFilterClass *klass)
146 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
148 gobject_class->finalize = gtk_recent_filter_finalize;
152 gtk_recent_filter_init (GtkRecentFilter *filter)
162 * gtk_recent_filter_new:
164 * Creates a new #GtkRecentFilter with no rules added to it.
165 * Such filter does not accept any recently used resources, so is not
166 * particularly useful until you add rules with
167 * gtk_recent_filter_add_pattern(), gtk_recent_filter_add_mime_type(),
168 * gtk_recent_filter_add_application(), gtk_recent_filter_add_age().
169 * To create a filter that accepts any recently used resource, use:
171 * GtkRecentFilter *filter = gtk_recent_filter_new ();
172 * gtk_recent_filter_add_pattern (filter, "*");
175 * Return value: a new #GtkRecentFilter
180 gtk_recent_filter_new (void)
182 return g_object_new (GTK_TYPE_RECENT_FILTER, NULL);
186 * gtk_recent_filter_set_name:
187 * @filter: a #GtkRecentFilter
188 * @name: then human readable name of @filter
190 * Sets the human-readable name of the filter; this is the string
191 * that will be displayed in the recently used resources selector
192 * user interface if there is a selectable list of filters.
197 gtk_recent_filter_set_name (GtkRecentFilter *filter,
200 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
202 g_free (filter->name);
205 filter->name = g_strdup (name);
209 * gtk_recent_filter_get_name:
210 * @filter: a #GtkRecentFilter
212 * Gets the human-readable name for the filter.
213 * See gtk_recent_filter_set_name().
215 * Return value: the name of the filter, or %NULL. The returned string
216 * is owned by the filter object and should not be freed.
220 G_CONST_RETURN gchar *
221 gtk_recent_filter_get_name (GtkRecentFilter *filter)
223 g_return_val_if_fail (GTK_IS_RECENT_FILTER (filter), NULL);
229 * gtk_recent_filter_get_needed:
230 * @filter: a #GtkRecentFilter
232 * Gets the fields that need to be filled in for the structure
233 * passed to gtk_recent_filter_filter()
235 * This function will not typically be used by applications; it
236 * is intended principally for use in the implementation of
239 * Return value: bitfield of flags indicating needed fields when
240 * calling gtk_recent_filter_filter()
245 gtk_recent_filter_get_needed (GtkRecentFilter *filter)
247 return filter->needed;
251 recent_filter_add_rule (GtkRecentFilter *filter,
254 filter->needed |= rule->needed;
255 filter->rules = g_slist_append (filter->rules, rule);
259 * gtk_recent_filter_add_mime_type:
260 * @filter: a #GtkRecentFilter
261 * @mime_type: a MIME type
263 * Adds a rule that allows resources based on their registered MIME type.
268 gtk_recent_filter_add_mime_type (GtkRecentFilter *filter,
269 const gchar *mime_type)
273 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
274 g_return_if_fail (mime_type != NULL);
276 rule = g_new0 (FilterRule, 1);
277 rule->type = FILTER_RULE_MIME_TYPE;
278 rule->needed = GTK_RECENT_FILTER_MIME_TYPE;
279 rule->u.mime_type = g_strdup (mime_type);
281 recent_filter_add_rule (filter, rule);
285 * gtk_recent_filter_add_pattern:
286 * @filter: a #GtkRecentFilter
287 * @pattern: a file pattern
289 * Adds a rule that allows resources based on a pattern matching their
295 gtk_recent_filter_add_pattern (GtkRecentFilter *filter,
296 const gchar *pattern)
300 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
301 g_return_if_fail (pattern != NULL);
303 rule = g_new0 (FilterRule, 1);
304 rule->type = FILTER_RULE_DISPLAY_NAME;
305 rule->needed = GTK_RECENT_FILTER_DISPLAY_NAME;
306 rule->u.pattern = g_strdup (pattern);
308 recent_filter_add_rule (filter, rule);
312 * gtk_recent_filter_add_pixbuf_formats:
313 * @filter: a #GtkRecentFilter
315 * Adds a rule allowing image files in the formats supported
321 gtk_recent_filter_add_pixbuf_formats (GtkRecentFilter *filter)
325 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
327 rule = g_new0 (FilterRule, 1);
328 rule->type = FILTER_RULE_PIXBUF_FORMATS;
329 rule->needed = GTK_RECENT_FILTER_MIME_TYPE;
330 rule->u.pixbuf_formats = gdk_pixbuf_get_formats ();
332 recent_filter_add_rule (filter, rule);
336 * gtk_recent_filter_add_application:
337 * @filter: a #GtkRecentFilter
338 * @application: an application name
340 * Adds a rule that allows resources based on the name of the application
341 * that has registered them.
346 gtk_recent_filter_add_application (GtkRecentFilter *filter,
347 const gchar *application)
351 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
352 g_return_if_fail (application != NULL);
354 rule = g_new0 (FilterRule, 1);
355 rule->type = FILTER_RULE_APPLICATION;
356 rule->needed = GTK_RECENT_FILTER_APPLICATION;
357 rule->u.application = g_strdup (application);
359 recent_filter_add_rule (filter, rule);
363 * gtk_recent_filter_add_group:
364 * @filter: a #GtkRecentFilter
365 * @group: a group name
367 * Adds a rule that allows resources based on the name of the group
368 * to which they belong
373 gtk_recent_filter_add_group (GtkRecentFilter *filter,
378 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
379 g_return_if_fail (group != NULL);
381 rule = g_new0 (FilterRule, 1);
382 rule->type = FILTER_RULE_GROUP;
383 rule->needed = GTK_RECENT_FILTER_GROUP;
384 rule->u.group = g_strdup (group);
386 recent_filter_add_rule (filter, rule);
390 * gtk_recent_filter_add_age:
391 * @filter: a #GtkRecentFilter
392 * @days: number of days
394 * Adds a rule that allows resources based on their age - that is, the number
395 * of days elapsed since they were last modified.
400 gtk_recent_filter_add_age (GtkRecentFilter *filter,
405 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
407 rule = g_new0 (FilterRule, 1);
408 rule->type = FILTER_RULE_AGE;
409 rule->needed = GTK_RECENT_FILTER_AGE;
412 recent_filter_add_rule (filter, rule);
416 * gtk_recent_filter_add_custom:
417 * @filter: a #GtkRecentFilter
418 * @needed: bitfield of flags indicating the information that the custom
419 * filter function needs.
420 * @func: callback function; if the function returns %TRUE, then
421 * the file will be displayed.
422 * @data: data to pass to @func
423 * @data_destroy: function to call to free @data when it is no longer needed.
425 * Adds a rule to a filter that allows resources based on a custom callback
426 * function. The bitfield @needed which is passed in provides information
427 * about what sorts of information that the filter function needs;
428 * this allows GTK+ to avoid retrieving expensive information when
429 * it isn't needed by the filter.
434 gtk_recent_filter_add_custom (GtkRecentFilter *filter,
435 GtkRecentFilterFlags needed,
436 GtkRecentFilterFunc func,
438 GDestroyNotify data_destroy)
442 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
443 g_return_if_fail (func != NULL);
445 rule = g_new0 (FilterRule, 1);
446 rule->type = FILTER_RULE_CUSTOM;
447 rule->needed = needed;
448 rule->u.custom.func = func;
449 rule->u.custom.data = data;
450 rule->u.custom.data_destroy = data_destroy;
452 recent_filter_add_rule (filter, rule);
457 * gtk_recent_filter_filter:
458 * @filter: a #GtkRecentFilter
459 * @filter_info: a #GtkRecentFilterInfo structure containing information
460 * about a recently used resource
462 * Tests whether a file should be displayed according to @filter.
463 * The #GtkRecentFilterInfo structure @filter_info should include
464 * the fields returned from gtk_recent_filter_get_needed().
466 * This function will not typically be used by applications; it
467 * is intended principally for use in the implementation of
470 * Return value: %TRUE if the file should be displayed
475 gtk_recent_filter_filter (GtkRecentFilter *filter,
476 const GtkRecentFilterInfo *filter_info)
480 g_return_val_if_fail (GTK_IS_RECENT_FILTER (filter), FALSE);
481 g_return_val_if_fail (filter_info != NULL, FALSE);
483 for (l = filter->rules; l != NULL; l = l->next)
485 FilterRule *rule = (FilterRule *) l->data;
487 if ((filter_info->contains & rule->needed) != rule->needed)
492 case FILTER_RULE_MIME_TYPE:
493 if ((filter_info->mime_type != NULL)
495 && (xdg_mime_mime_type_subclass (filter_info->mime_type, rule->u.mime_type)))
497 && (strcmp (filter_info->mime_type, rule->u.mime_type) == 0))
501 case FILTER_RULE_APPLICATION:
502 if (filter_info->applications)
506 for (i = 0; filter_info->applications[i] != NULL; i++)
508 if (strcmp (filter_info->applications[i], rule->u.application) == 0)
513 case FILTER_RULE_GROUP:
514 if (filter_info->groups)
518 for (i = 0; filter_info->groups[i] != NULL; i++)
520 if (strcmp (filter_info->groups[i], rule->u.group) == 0)
525 case FILTER_RULE_PIXBUF_FORMATS:
528 if (!filter_info->mime_type)
531 for (list = rule->u.pixbuf_formats; list; list = list->next)
536 mime_types = gdk_pixbuf_format_get_mime_types (list->data);
538 for (i = 0; mime_types[i] != NULL; i++)
540 if (strcmp (mime_types[i], filter_info->mime_type) == 0)
542 g_strfreev (mime_types);
547 g_strfreev (mime_types);
551 case FILTER_RULE_URI:
552 if ((filter_info->uri != NULL) &&
553 _gtk_fnmatch (rule->u.uri, filter_info->uri, FALSE))
556 case FILTER_RULE_DISPLAY_NAME:
557 if ((filter_info->display_name != NULL) &&
558 _gtk_fnmatch (rule->u.pattern, filter_info->display_name, FALSE))
561 case FILTER_RULE_AGE:
562 if ((filter_info->age != -1) &&
563 (filter_info->age < rule->u.age))
566 case FILTER_RULE_CUSTOM:
567 if (rule->u.custom.func (filter_info, rule->u.custom.data))
576 #define __GTK_RECENT_FILTER_C__
577 #include "gtkaliasdef.c"