summaryrefslogtreecommitdiff
path: root/gtk/gtkrecentchooserutils.c
blob: 54f0ff5ce5e3889b101acacfec22f02d2ee7403a (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
/* gtkrecentchooserutils.h - Private utility functions for implementing a
 *                           GtkRecentChooser interface
 *
 * Copyright (C) 2006 Emmanuele Bassi
 *
 * All rights reserved
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Based on gtkfilechooserutils.c:
 *	Copyright (C) 2003 Red Hat, Inc.
 */

#include "config.h"

#include "gtkrecentchooserutils.h"

/* Methods */
static void      delegate_set_sort_func              (GtkRecentChooser  *chooser,
						      GtkRecentSortFunc  sort_func,
						      gpointer           sort_data,
						      GDestroyNotify     data_destroy);
static void      delegate_add_filter                 (GtkRecentChooser  *chooser,
						      GtkRecentFilter   *filter);
static void      delegate_remove_filter              (GtkRecentChooser  *chooser,
						      GtkRecentFilter   *filter);
static GSList   *delegate_list_filters               (GtkRecentChooser  *chooser);
static gboolean  delegate_select_uri                 (GtkRecentChooser  *chooser,
						      const gchar       *uri,
						      GError           **error);
static void      delegate_unselect_uri               (GtkRecentChooser  *chooser,
						      const gchar       *uri);
static GList    *delegate_get_items                  (GtkRecentChooser  *chooser);
static GtkRecentManager *delegate_get_recent_manager (GtkRecentChooser  *chooser);
static void      delegate_select_all                 (GtkRecentChooser  *chooser);
static void      delegate_unselect_all               (GtkRecentChooser  *chooser);
static gboolean  delegate_set_current_uri            (GtkRecentChooser  *chooser,
						      const gchar       *uri,
						      GError           **error);
static gchar *   delegate_get_current_uri            (GtkRecentChooser  *chooser);

/* Signals */
static void      delegate_notify            (GObject          *object,
					     GParamSpec       *pspec,
					     gpointer          user_data);
static void      delegate_selection_changed (GtkRecentChooser *receiver,
					     gpointer          user_data);
static void      delegate_item_activated    (GtkRecentChooser *receiver,
					     gpointer          user_data);

/**
 * _gtk_recent_chooser_install_properties:
 * @klass: the class structure for a type deriving from #GObject
 *
 * Installs the necessary properties for a class implementing
 * #GtkRecentChooser. A #GtkParamSpecOverride property is installed
 * for each property, using the values from the #GtkRecentChooserProp
 * enumeration. The caller must make sure itself that the enumeration
 * values don't collide with some other property values they
 * are using.
 */
void
_gtk_recent_chooser_install_properties (GObjectClass *klass)
{
  g_object_class_override_property (klass,
  				    GTK_RECENT_CHOOSER_PROP_RECENT_MANAGER,
  				    "recent-manager");  				    
  g_object_class_override_property (klass,
  				    GTK_RECENT_CHOOSER_PROP_SHOW_PRIVATE,
  				    "show-private");
  g_object_class_override_property (klass,
  				    GTK_RECENT_CHOOSER_PROP_SHOW_TIPS,
  				    "show-tips");
  g_object_class_override_property (klass,
  				    GTK_RECENT_CHOOSER_PROP_SHOW_ICONS,
  				    "show-icons");
  g_object_class_override_property (klass,
  				    GTK_RECENT_CHOOSER_PROP_SHOW_NOT_FOUND,
  				    "show-not-found");
  g_object_class_override_property (klass,
  				    GTK_RECENT_CHOOSER_PROP_SELECT_MULTIPLE,
  				    "select-multiple");
  g_object_class_override_property (klass,
  				    GTK_RECENT_CHOOSER_PROP_LIMIT,
  				    "limit");
  g_object_class_override_property (klass,
		  		    GTK_RECENT_CHOOSER_PROP_LOCAL_ONLY,
				    "local-only");
  g_object_class_override_property (klass,
		  		    GTK_RECENT_CHOOSER_PROP_SORT_TYPE,
				    "sort-type");
  g_object_class_override_property (klass,
  				    GTK_RECENT_CHOOSER_PROP_FILTER,
  				    "filter");
}

/**
 * _gtk_recent_chooser_delegate_iface_init:
 * @iface: a #GtkRecentChooserIface
 *
 * An interface-initialization function for use in cases where
 * an object is simply delegating the methods, signals of
 * the #GtkRecentChooser interface to another object.
 * _gtk_recent_chooser_set_delegate() must be called on each
 * instance of the object so that the delegate object can
 * be found.
 */
void
_gtk_recent_chooser_delegate_iface_init (GtkRecentChooserIface *iface)
{
  iface->set_current_uri = delegate_set_current_uri;
  iface->get_current_uri = delegate_get_current_uri;
  iface->select_uri = delegate_select_uri;
  iface->unselect_uri = delegate_unselect_uri;
  iface->select_all = delegate_select_all;
  iface->unselect_all = delegate_unselect_all;
  iface->get_items = delegate_get_items;
  iface->get_recent_manager = delegate_get_recent_manager;
  iface->set_sort_func = delegate_set_sort_func;
  iface->add_filter = delegate_add_filter;
  iface->remove_filter = delegate_remove_filter;
  iface->list_filters = delegate_list_filters;
}

/**
 * _gtk_recent_chooser_set_delegate:
 * @receiver: a #GObject implementing #GtkRecentChooser
 * @delegate: another #GObject implementing #GtkRecentChooser
 *
 * Establishes that calls on @receiver for #GtkRecentChooser
 * methods should be delegated to @delegate, and that
 * #GtkRecentChooser signals emitted on @delegate should be
 * forwarded to @receiver. Must be used in conjunction with
 * _gtk_recent_chooser_delegate_iface_init().
 */
void
_gtk_recent_chooser_set_delegate (GtkRecentChooser *receiver,
				  GtkRecentChooser *delegate)
{
  g_return_if_fail (GTK_IS_RECENT_CHOOSER (receiver));
  g_return_if_fail (GTK_IS_RECENT_CHOOSER (delegate));
  
  g_object_set_data (G_OBJECT (receiver),
  		    "gtk-recent-chooser-delegate", delegate);
  
  g_signal_connect (delegate, "notify",
  		    G_CALLBACK (delegate_notify), receiver);
  g_signal_connect (delegate, "selection-changed",
  		    G_CALLBACK (delegate_selection_changed), receiver);
  g_signal_connect (delegate, "item-activated",
  		    G_CALLBACK (delegate_item_activated), receiver);
}

GQuark
_gtk_recent_chooser_delegate_get_quark (void)
{
  static GQuark quark = 0;
  
  if (G_UNLIKELY (quark == 0))
    quark = g_quark_from_static_string ("gtk-recent-chooser-delegate");
  
  return quark;
}

static GtkRecentChooser *
get_delegate (GtkRecentChooser *receiver)
{
  return g_object_get_qdata (G_OBJECT (receiver),
  			     GTK_RECENT_CHOOSER_DELEGATE_QUARK);
}

static void
delegate_set_sort_func (GtkRecentChooser  *chooser,
			GtkRecentSortFunc  sort_func,
			gpointer           sort_data,
			GDestroyNotify     data_destroy)
{
  gtk_recent_chooser_set_sort_func (get_delegate (chooser),
		  		    sort_func,
				    sort_data,
				    data_destroy);
}

static void
delegate_add_filter (GtkRecentChooser *chooser,
		     GtkRecentFilter  *filter)
{
  gtk_recent_chooser_add_filter (get_delegate (chooser), filter);
}

static void
delegate_remove_filter (GtkRecentChooser *chooser,
			GtkRecentFilter  *filter)
{
  gtk_recent_chooser_remove_filter (get_delegate (chooser), filter);
}

static GSList *
delegate_list_filters (GtkRecentChooser *chooser)
{
  return gtk_recent_chooser_list_filters (get_delegate (chooser));
}

static gboolean
delegate_select_uri (GtkRecentChooser  *chooser,
		     const gchar       *uri,
		     GError           **error)
{
  return gtk_recent_chooser_select_uri (get_delegate (chooser), uri, error);
}

static void
delegate_unselect_uri (GtkRecentChooser *chooser,
		       const gchar      *uri)
{
 gtk_recent_chooser_unselect_uri (get_delegate (chooser), uri);
}

static GList *
delegate_get_items (GtkRecentChooser *chooser)
{
  return gtk_recent_chooser_get_items (get_delegate (chooser));
}

static GtkRecentManager *
delegate_get_recent_manager (GtkRecentChooser *chooser)
{
  return _gtk_recent_chooser_get_recent_manager (get_delegate (chooser));
}

static void
delegate_select_all (GtkRecentChooser *chooser)
{
  gtk_recent_chooser_select_all (get_delegate (chooser));
}

static void
delegate_unselect_all (GtkRecentChooser *chooser)
{
  gtk_recent_chooser_unselect_all (get_delegate (chooser));
}

static gboolean
delegate_set_current_uri (GtkRecentChooser  *chooser,
			  const gchar       *uri,
			  GError           **error)
{
  return gtk_recent_chooser_set_current_uri (get_delegate (chooser), uri, error);
}

static gchar *
delegate_get_current_uri (GtkRecentChooser *chooser)
{
  return gtk_recent_chooser_get_current_uri (get_delegate (chooser));
}

static void
delegate_notify (GObject    *object,
		 GParamSpec *pspec,
		 gpointer    user_data)
{
  gpointer iface;

  iface = g_type_interface_peek (g_type_class_peek (G_OBJECT_TYPE (object)),
				 gtk_recent_chooser_get_type ());
  if (g_object_interface_find_property (iface, pspec->name))
    g_object_notify (user_data, pspec->name);
}

static void
delegate_selection_changed (GtkRecentChooser *receiver,
			    gpointer          user_data)
{
  _gtk_recent_chooser_selection_changed (GTK_RECENT_CHOOSER (user_data));
}

static void
delegate_item_activated (GtkRecentChooser *receiver,
			 gpointer          user_data)
{
  _gtk_recent_chooser_item_activated (GTK_RECENT_CHOOSER (user_data));
}

static gint
sort_recent_items_mru (GtkRecentInfo *a,
		       GtkRecentInfo *b,
		       gpointer       unused)
{
  g_assert (a != NULL && b != NULL);
  
  return gtk_recent_info_get_modified (b) - gtk_recent_info_get_modified (a);
}

static gint
sort_recent_items_lru (GtkRecentInfo *a,
		       GtkRecentInfo *b,
		       gpointer       unused)
{
  g_assert (a != NULL && b != NULL);
  
  return -1 * (gtk_recent_info_get_modified (b) - gtk_recent_info_get_modified (a));
}

typedef struct
{
  GtkRecentSortFunc func;
  gpointer data;
} SortRecentData;

/* our proxy sorting function */
static gint
sort_recent_items_proxy (gpointer *a,
                         gpointer *b,
                         gpointer  user_data)
{
  GtkRecentInfo *info_a = (GtkRecentInfo *) a;
  GtkRecentInfo *info_b = (GtkRecentInfo *) b;
  SortRecentData *sort_recent = user_data;

  if (sort_recent->func)
    return (* sort_recent->func) (info_a, info_b, sort_recent->data);
  
  /* fallback */
  return 0;
}

static gboolean
get_is_recent_filtered (GtkRecentFilter *filter,
			GtkRecentInfo   *info)
{
  GtkRecentFilterInfo filter_info;
  GtkRecentFilterFlags needed;
  gboolean retval;

  g_assert (info != NULL);
  
  needed = gtk_recent_filter_get_needed (filter);
  
  filter_info.contains = GTK_RECENT_FILTER_URI | GTK_RECENT_FILTER_MIME_TYPE;
  
  filter_info.uri = gtk_recent_info_get_uri (info);
  filter_info.mime_type = gtk_recent_info_get_mime_type (info);
  
  if (needed & GTK_RECENT_FILTER_DISPLAY_NAME)
    {
      filter_info.display_name = gtk_recent_info_get_display_name (info);
      filter_info.contains |= GTK_RECENT_FILTER_DISPLAY_NAME;
    }
  else
    filter_info.uri = NULL;
  
  if (needed & GTK_RECENT_FILTER_APPLICATION)
    {
      filter_info.applications = (const gchar **) gtk_recent_info_get_applications (info, NULL);
      filter_info.contains |= GTK_RECENT_FILTER_APPLICATION;
    }
  else
    filter_info.applications = NULL;

  if (needed & GTK_RECENT_FILTER_GROUP)
    {
      filter_info.groups = (const gchar **) gtk_recent_info_get_groups (info, NULL);
      filter_info.contains |= GTK_RECENT_FILTER_GROUP;
    }
  else
    filter_info.groups = NULL;

  if (needed & GTK_RECENT_FILTER_AGE)
    {
      filter_info.age = gtk_recent_info_get_age (info);
      filter_info.contains |= GTK_RECENT_FILTER_AGE;
    }
  else
    filter_info.age = -1;
  
  retval = gtk_recent_filter_filter (filter, &filter_info);
  
  /* these we own */
  if (filter_info.applications)
    g_strfreev ((gchar **) filter_info.applications);
  if (filter_info.groups)
    g_strfreev ((gchar **) filter_info.groups);
  
  return !retval;
}

/*
 * _gtk_recent_chooser_get_items:
 * @chooser: a #GtkRecentChooser
 * @filter: a #GtkRecentFilter
 * @sort_func: (allow-none): sorting function, or %NULL
 * @sort_data: (allow-none): sorting function data, or %NULL
 *
 * Default implementation for getting the filtered, sorted and
 * clamped list of recently used resources from a #GtkRecentChooser.
 * This function should be used by implementations of the
 * #GtkRecentChooser interface inside the GtkRecentChooser::get_items
 * vfunc.
 *
 * Return value: a list of #GtkRecentInfo objects
 */
GList *
_gtk_recent_chooser_get_items (GtkRecentChooser  *chooser,
                               GtkRecentFilter   *filter,
                               GtkRecentSortFunc  sort_func,
                               gpointer           sort_data)
{
  GtkRecentManager *manager;
  gint limit;
  GtkRecentSortType sort_type;
  GList *items;
  GCompareDataFunc compare_func;
  gint length;

  g_return_val_if_fail (GTK_IS_RECENT_CHOOSER (chooser), NULL);

  manager = _gtk_recent_chooser_get_recent_manager (chooser);
  if (!manager)
    return NULL;

  items = gtk_recent_manager_get_items (manager);
  if (!items)
    return NULL;

  limit = gtk_recent_chooser_get_limit (chooser);
  if (limit == 0)
    return NULL;

  if (filter)
    {
      GList *filter_items, *l;
      gboolean local_only = FALSE;
      gboolean show_private = FALSE;
      gboolean show_not_found = FALSE;

      g_object_get (G_OBJECT (chooser),
                    "local-only", &local_only,
                    "show-private", &show_private,
                    "show-not-found", &show_not_found,
                    NULL);

      filter_items = NULL;
      for (l = items; l != NULL; l = l->next)
        {
          GtkRecentInfo *info = l->data;
          gboolean remove_item = FALSE;

          if (get_is_recent_filtered (filter, info))
            remove_item = TRUE;
          
          if (local_only && !gtk_recent_info_is_local (info))
            remove_item = TRUE;

          if (!show_private && gtk_recent_info_get_private_hint (info))
            remove_item = TRUE;

          if (!show_not_found && !gtk_recent_info_exists (info))
            remove_item = TRUE;
          
          if (!remove_item)
            filter_items = g_list_prepend (filter_items, info);
          else
            gtk_recent_info_unref (info);
        }
      
      g_list_free (items);
      items = filter_items;
    }

  if (!items)
    return NULL;

  sort_type = gtk_recent_chooser_get_sort_type (chooser);
  switch (sort_type)
    {
    case GTK_RECENT_SORT_NONE:
      compare_func = NULL;
      break;
    case GTK_RECENT_SORT_MRU:
      compare_func = (GCompareDataFunc) sort_recent_items_mru;
      break;
    case GTK_RECENT_SORT_LRU:
      compare_func = (GCompareDataFunc) sort_recent_items_lru;
      break;
    case GTK_RECENT_SORT_CUSTOM:
      compare_func = (GCompareDataFunc) sort_recent_items_proxy;
      break;
    default:
      g_assert_not_reached ();
      break;
    }

  if (compare_func)
    {
      SortRecentData sort_recent;

      sort_recent.func = sort_func;
      sort_recent.data = sort_data;

      items = g_list_sort_with_data (items, compare_func, &sort_recent);
    }
  
  length = g_list_length (items);
  if ((limit != -1) && (length > limit))
    {
      GList *clamp, *l;
      
      clamp = g_list_nth (items, limit - 1);
      if (!clamp)
        return items;
      
      l = clamp->next;
      clamp->next = NULL;
    
      g_list_foreach (l, (GFunc) gtk_recent_info_unref, NULL);
      g_list_free (l);
    }

  return items;
}