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"
28 typedef struct _GtkRecentFilterClass GtkRecentFilterClass;
29 typedef struct _FilterRule FilterRule;
33 FILTER_RULE_DISPLAY_NAME,
34 FILTER_RULE_MIME_TYPE,
35 FILTER_RULE_PIXBUF_FORMATS,
36 FILTER_RULE_APPLICATION,
42 struct _GtkRecentFilter
44 GtkObject parent_instance;
49 GtkRecentFilterFlags needed;
52 struct _GtkRecentFilterClass
54 GtkObjectClass parent_class;
60 GtkRecentFilterFlags needed;
66 GSList *pixbuf_formats;
71 GtkRecentFilterFunc func;
73 GDestroyNotify data_destroy;
78 G_DEFINE_TYPE (GtkRecentFilter, gtk_recent_filter, GTK_TYPE_OBJECT)
82 filter_rule_free (FilterRule *rule)
86 case FILTER_RULE_MIME_TYPE:
87 g_free (rule->u.mime_type);
92 case FILTER_RULE_DISPLAY_NAME:
93 g_free (rule->u.pattern);
95 case FILTER_RULE_PIXBUF_FORMATS:
96 g_slist_free (rule->u.pixbuf_formats);
100 case FILTER_RULE_APPLICATION:
101 g_free (rule->u.application);
103 case FILTER_RULE_GROUP:
104 g_free (rule->u.group);
106 case FILTER_RULE_CUSTOM:
107 if (rule->u.custom.data_destroy)
108 rule->u.custom.data_destroy (rule->u.custom.data);
111 g_assert_not_reached ();
119 gtk_recent_filter_finalize (GObject *object)
121 GtkRecentFilter *filter = GTK_RECENT_FILTER (object);
123 g_free (filter->name);
127 g_slist_foreach (filter->rules,
128 (GFunc) filter_rule_free,
130 g_slist_free (filter->rules);
133 G_OBJECT_CLASS (gtk_recent_filter_parent_class)->finalize (object);
137 gtk_recent_filter_class_init (GtkRecentFilterClass *klass)
139 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
141 gobject_class->finalize = gtk_recent_filter_finalize;
145 gtk_recent_filter_init (GtkRecentFilter *filter)
155 * gtk_recent_filter_new:
157 * Creates a new #GtkRecentFilter with no rules added to it.
158 * Such filter does not accept any recently used resources, so is not
159 * particularly useful until you add rules with
160 * gtk_recent_filter_add_pattern(), gtk_recent_filter_add_mime_type(),
161 * gtk_recent_filter_add_application(), gtk_recent_filter_add_age().
162 * To create a filter that accepts any recently used resource, use:
164 * GtkRecentFilter *filter = gtk_recent_filter_new ();
165 * gtk_recent_filter_add_pattern (filter, "*");
168 * Return value: a new #GtkRecentFilter
173 gtk_recent_filter_new (void)
175 return g_object_new (GTK_TYPE_RECENT_FILTER, NULL);
179 * gtk_recent_filter_set_name:
180 * @filter: a #GtkRecentFilter
181 * @name: then human readable name of @filter
183 * Sets the human-readable name of the filter; this is the string
184 * that will be displayed in the recently used resources selector
185 * user interface if there is a selectable list of filters.
190 gtk_recent_filter_set_name (GtkRecentFilter *filter,
193 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
195 g_free (filter->name);
198 filter->name = g_strdup (name);
202 * gtk_recent_filter_get_name:
203 * @filter: a #GtkRecentFilter
205 * Gets the human-readable name for the filter.
206 * See gtk_recent_filter_set_name().
208 * Return value: the name of the filter, or %NULL. The returned string
209 * is owned by the filter object and should not be freed.
213 G_CONST_RETURN gchar *
214 gtk_recent_filter_get_name (GtkRecentFilter *filter)
216 g_return_val_if_fail (GTK_IS_RECENT_FILTER (filter), NULL);
222 * gtk_recent_filter_get_needed:
223 * @filter: a #GtkRecentFilter
225 * Gets the fields that need to be filled in for the structure
226 * passed to gtk_recent_filter_filter()
228 * This function will not typically be used by applications; it
229 * is intended principally for use in the implementation of
232 * Return value: bitfield of flags indicating needed fields when
233 * calling gtk_recent_filter_filter()
238 gtk_recent_filter_get_needed (GtkRecentFilter *filter)
240 return filter->needed;
244 recent_filter_add_rule (GtkRecentFilter *filter,
247 filter->needed |= rule->needed;
248 filter->rules = g_slist_append (filter->rules, rule);
252 * gtk_recent_filter_add_mime_type:
253 * @filter: a #GtkRecentFilter
254 * @mime_type: a MIME type
256 * Adds a rule that allows resources based on their registered MIME type.
261 gtk_recent_filter_add_mime_type (GtkRecentFilter *filter,
262 const gchar *mime_type)
266 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
267 g_return_if_fail (mime_type != NULL);
269 rule = g_new0 (FilterRule, 1);
270 rule->type = FILTER_RULE_MIME_TYPE;
271 rule->needed = GTK_RECENT_FILTER_MIME_TYPE;
272 rule->u.mime_type = g_strdup (mime_type);
274 recent_filter_add_rule (filter, rule);
278 * gtk_recent_filter_add_pattern:
279 * @filter: a #GtkRecentFilter
280 * @pattern: a file pattern
282 * Adds a rule that allows resources based on a pattern matching their
288 gtk_recent_filter_add_pattern (GtkRecentFilter *filter,
289 const gchar *pattern)
293 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
294 g_return_if_fail (pattern != NULL);
296 rule = g_new0 (FilterRule, 1);
297 rule->type = FILTER_RULE_DISPLAY_NAME;
298 rule->needed = GTK_RECENT_FILTER_DISPLAY_NAME;
299 rule->u.pattern = g_strdup (pattern);
301 recent_filter_add_rule (filter, rule);
305 * gtk_recent_filter_add_pixbuf_formats:
306 * @filter: a #GtkRecentFilter
308 * Adds a rule allowing image files in the formats supported
314 gtk_recent_filter_add_pixbuf_formats (GtkRecentFilter *filter)
318 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
320 rule = g_new0 (FilterRule, 1);
321 rule->type = FILTER_RULE_PIXBUF_FORMATS;
322 rule->needed = GTK_RECENT_FILTER_MIME_TYPE;
323 rule->u.pixbuf_formats = gdk_pixbuf_get_formats ();
325 recent_filter_add_rule (filter, rule);
329 * gtk_recent_filter_add_application:
330 * @filter: a #GtkRecentFilter
331 * @application: an application name
333 * Adds a rule that allows resources based on the name of the application
334 * that has registered them.
339 gtk_recent_filter_add_application (GtkRecentFilter *filter,
340 const gchar *application)
344 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
345 g_return_if_fail (application != NULL);
347 rule = g_new0 (FilterRule, 1);
348 rule->type = FILTER_RULE_APPLICATION;
349 rule->needed = GTK_RECENT_FILTER_APPLICATION;
350 rule->u.application = g_strdup (application);
352 recent_filter_add_rule (filter, rule);
356 * gtk_recent_filter_add_group:
357 * @filter: a #GtkRecentFilter
358 * @group: a group name
360 * Adds a rule that allows resources based on the name of the group
361 * to which they belong
366 gtk_recent_filter_add_group (GtkRecentFilter *filter,
371 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
372 g_return_if_fail (group != NULL);
374 rule = g_new0 (FilterRule, 1);
375 rule->type = FILTER_RULE_GROUP;
376 rule->needed = GTK_RECENT_FILTER_GROUP;
377 rule->u.group = g_strdup (group);
379 recent_filter_add_rule (filter, rule);
383 * gtk_recent_filter_add_age:
384 * @filter: a #GtkRecentFilter
385 * @days: number of days
387 * Adds a rule that allows resources based on their age - that is, the number
388 * of days elapsed since they were last modified.
393 gtk_recent_filter_add_age (GtkRecentFilter *filter,
398 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
400 rule = g_new0 (FilterRule, 1);
401 rule->type = FILTER_RULE_AGE;
402 rule->needed = GTK_RECENT_FILTER_AGE;
405 recent_filter_add_rule (filter, rule);
409 * gtk_recent_filter_add_custom:
410 * @filter: a #GtkRecentFilter
411 * @needed: bitfield of flags indicating the information that the custom
412 * filter function needs.
413 * @func: callback function; if the function returns %TRUE, then
414 * the file will be displayed.
415 * @data: data to pass to @func
416 * @data_destroy: function to call to free @data when it is no longer needed.
418 * Adds a rule to a filter that allows resources based on a custom callback
419 * function. The bitfield @needed which is passed in provides information
420 * about what sorts of information that the filter function needs;
421 * this allows GTK+ to avoid retrieving expensive information when
422 * it isn't needed by the filter.
427 gtk_recent_filter_add_custom (GtkRecentFilter *filter,
428 GtkRecentFilterFlags needed,
429 GtkRecentFilterFunc func,
431 GDestroyNotify data_destroy)
435 g_return_if_fail (GTK_IS_RECENT_FILTER (filter));
436 g_return_if_fail (func != NULL);
438 rule = g_new0 (FilterRule, 1);
439 rule->type = FILTER_RULE_CUSTOM;
440 rule->needed = needed;
441 rule->u.custom.func = func;
442 rule->u.custom.data = data;
443 rule->u.custom.data_destroy = data_destroy;
445 recent_filter_add_rule (filter, rule);
450 * gtk_recent_filter_filter:
451 * @filter: a #GtkRecentFilter
452 * @filter_info: a #GtkRecentFilterInfo structure containing information
453 * about a recently used resource
455 * Tests whether a file should be displayed according to @filter.
456 * The #GtkRecentFilterInfo structure @filter_info should include
457 * the fields returned from gtk_recent_filter_get_needed().
459 * This function will not typically be used by applications; it
460 * is intended principally for use in the implementation of
463 * Return value: %TRUE if the file should be displayed
468 gtk_recent_filter_filter (GtkRecentFilter *filter,
469 const GtkRecentFilterInfo *filter_info)
473 g_return_val_if_fail (GTK_IS_RECENT_FILTER (filter), FALSE);
474 g_return_val_if_fail (filter_info != NULL, FALSE);
476 for (l = filter->rules; l != NULL; l = l->next)
478 FilterRule *rule = (FilterRule *) l->data;
480 if ((filter_info->contains & rule->needed) != rule->needed)
485 case FILTER_RULE_MIME_TYPE:
486 if (filter_info->mime_type != NULL &&
487 g_content_type_is_a (filter_info->mime_type, rule->u.mime_type))
490 case FILTER_RULE_APPLICATION:
491 if (filter_info->applications)
495 for (i = 0; filter_info->applications[i] != NULL; i++)
497 if (strcmp (filter_info->applications[i], rule->u.application) == 0)
502 case FILTER_RULE_GROUP:
503 if (filter_info->groups)
507 for (i = 0; filter_info->groups[i] != NULL; i++)
509 if (strcmp (filter_info->groups[i], rule->u.group) == 0)
514 case FILTER_RULE_PIXBUF_FORMATS:
517 if (!filter_info->mime_type)
520 for (list = rule->u.pixbuf_formats; list; list = list->next)
525 mime_types = gdk_pixbuf_format_get_mime_types (list->data);
527 for (i = 0; mime_types[i] != NULL; i++)
529 if (strcmp (mime_types[i], filter_info->mime_type) == 0)
531 g_strfreev (mime_types);
536 g_strfreev (mime_types);
540 case FILTER_RULE_URI:
541 if ((filter_info->uri != NULL) &&
542 _gtk_fnmatch (rule->u.uri, filter_info->uri, FALSE))
545 case FILTER_RULE_DISPLAY_NAME:
546 if ((filter_info->display_name != NULL) &&
547 _gtk_fnmatch (rule->u.pattern, filter_info->display_name, FALSE))
550 case FILTER_RULE_AGE:
551 if ((filter_info->age != -1) &&
552 (filter_info->age < rule->u.age))
555 case FILTER_RULE_CUSTOM:
556 if (rule->u.custom.func (filter_info, rule->u.custom.data))