eedfd03e3204cb386b55d04f1608db908e3d81fb
[claws.git] / src / foldersel.c
1 /*
2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3  * Copyright (C) 1999-2020 the Claws Mail team and Hiroyuki Yamamoto
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 3 of the License, or
8  * (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
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
17  */
18
19 #include "defs.h"
20
21 #include <glib.h>
22 #include <glib/gi18n.h>
23 #include <gdk/gdkkeysyms.h>
24 #include <gtk/gtk.h>
25 #include <stdio.h>
26 #include <unistd.h>
27 #include <string.h>
28 #include <sys/stat.h>
29 #include <sys/types.h>
30 #include <fcntl.h>
31 #include <errno.h>
32
33 #include "main.h"
34 #include "utils.h"
35 #include "gtkutils.h"
36 #include "stock_pixmap.h"
37 #include "foldersel.h"
38 #include "alertpanel.h"
39 #include "manage_window.h"
40 #include "folderview.h"
41 #include "inputdialog.h"
42 #include "folder.h"
43 #include "prefs_common.h"
44
45 enum {
46         FOLDERSEL_FOLDERNAME,
47         FOLDERSEL_FOLDERITEM,
48         FOLDERSEL_PIXBUF,
49         FOLDERSEL_PIXBUF_OPEN,
50         FOLDERSEL_FOREGROUND,
51         FOLDERSEL_BOLD,
52         N_FOLDERSEL_COLUMNS
53 };
54
55 typedef struct _FolderItemSearch        FolderItemSearch;
56
57 struct _FolderItemSearch
58 {
59         FolderItem *item;
60         GtkTreePath *path;
61         GtkTreeIter iter;
62 };
63
64 static GdkPixbuf *folder_pixbuf = NULL;
65 static GdkPixbuf *folderopen_pixbuf = NULL;
66 static GdkPixbuf *foldernoselect_pixbuf = NULL;
67 static GdkPixbuf *foldernoselectopen_pixbuf = NULL;
68
69 static GtkWidget *window;
70 static GtkWidget *treeview;
71 static GtkWidget *statusbar;
72 static gint statusbar_cid;
73 static GtkWidget *ok_button;
74 static GtkWidget *cancel_button;
75 static GtkWidget *new_button;
76 static gboolean   root_selectable;
77
78 static FolderItem *folder_item;
79 static FolderItem *selected_item;
80
81 static GtkTreeStore *tree_store;
82
83 static gboolean cancelled;
84 static gboolean finished;
85
86 static void foldersel_create            (const gchar *title);
87 static void foldersel_init              (void);
88
89 static void foldersel_append_item       (GtkTreeStore   *store,
90                                          FolderItem     *item,
91                                          GtkTreeIter    *iter,
92                                          GtkTreeIter    *parent);
93
94 static void foldersel_set_tree          (Folder                 *cur_folder,
95                                          FolderSelectionType     type);
96
97 static gboolean foldersel_selected      (GtkTreeSelection *selection,
98                                          GtkTreeModel     *model,
99                                          GtkTreePath      *path,
100                                          gboolean          currently_selected,
101                                          gpointer          data);
102
103 static void foldersel_ok                (GtkButton      *button,
104                                          gpointer        data);
105 static void foldersel_cancel            (GtkButton      *button,
106                                          gpointer        data);
107 static void foldersel_new_folder        (GtkButton      *button,
108                                          gpointer        data);
109
110 static void foldersel_entry_activated   (GtkEntry       *entry,
111                                          gpointer        data);
112
113 static void foldersel_tree_activated    (GtkTreeView            *treeview,
114                                          GtkTreePath            *path,
115                                          GtkTreeViewColumn      *column,
116                                          gpointer                data);
117
118 static gint delete_event                (GtkWidget      *widget,
119                                          GdkEventAny    *event,
120                                          gpointer        data);
121 static gboolean key_pressed             (GtkWidget      *widget,
122                                          GdkEventKey    *event,
123                                          gpointer        data);
124
125 static gint foldersel_folder_name_compare       (GtkTreeModel   *model,
126                                                  GtkTreeIter    *a,
127                                                  GtkTreeIter    *b,
128                                                  gpointer        context);
129
130 static gboolean tree_view_folder_item_func      (GtkTreeModel     *model,
131                                                  GtkTreePath      *path,
132                                                  GtkTreeIter      *iter,
133                                                  FolderItemSearch *data);
134
135 FolderItem *foldersel_folder_sel(Folder *cur_folder, FolderSelectionType type,
136                                  const gchar *default_folder, gboolean can_sel_mailbox,
137                                  const gchar *title)
138 {
139         selected_item = NULL;
140         root_selectable = can_sel_mailbox;
141
142         if (!window) {
143                 foldersel_create(title);
144                 foldersel_init();
145         }
146
147         foldersel_set_tree(cur_folder, type);
148
149         /* select current */
150         if (folder_item) {
151                 FolderItemSearch fis;
152
153                 fis.item = folder_item;
154                 fis.path = NULL;
155
156                 /* find matching model entry */
157                 gtk_tree_model_foreach
158                         (GTK_TREE_MODEL(tree_store),
159                          (GtkTreeModelForeachFunc)tree_view_folder_item_func,
160                          &fis);
161
162                 if (fis.path) {
163                         GtkTreeSelection *selection;
164
165                         selection = gtk_tree_view_get_selection
166                                 (GTK_TREE_VIEW(treeview));
167                         gtk_tree_selection_select_iter(selection, &fis.iter);
168                         gtk_tree_view_set_cursor(GTK_TREE_VIEW(treeview),
169                                                  fis.path, NULL, FALSE);
170                         gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(treeview),
171                                                      fis.path,
172                                                      NULL, TRUE, 0.5, 0.0);
173                         gtk_tree_path_free(fis.path);
174                 } else
175                         gtk_tree_view_scroll_to_point
176                                 (GTK_TREE_VIEW(treeview), 0, 0);
177         } else
178                 gtk_tree_view_scroll_to_point(GTK_TREE_VIEW(treeview), 0, 0);
179
180         gtk_widget_grab_focus(ok_button);
181         gtk_widget_grab_focus(treeview);
182
183         gtk_window_present(GTK_WINDOW(window));
184         manage_window_set_transient(GTK_WINDOW(window));
185         gtk_window_set_modal(GTK_WINDOW(window), TRUE);
186
187         cancelled = finished = FALSE;
188
189         while (finished == FALSE)
190                 gtk_main_iteration();
191
192         gtk_widget_destroy(window);
193         window = NULL;
194
195         if (!cancelled &&
196             selected_item && (selected_item->path || root_selectable)) {
197                 folder_item = selected_item;
198                 return folder_item;
199         } else
200                 return NULL;
201 }
202
203 static gboolean foldersel_search_name_func(GtkTreeModel *model, gint column,
204                 const gchar *key, GtkTreeIter *iter, gpointer search_data)
205 {
206         gchar *store_string = NULL;
207         FolderItem *item;
208         gboolean retval;
209
210         if (column == FOLDERSEL_FOLDERNAME) {
211                 /* get the name of the FolderItem, not the displayed string */
212                 gtk_tree_model_get(model, iter,
213                            FOLDERSEL_FOLDERITEM, &item, -1);
214                 store_string = folder_item_get_name(item);
215         } else {
216                 gtk_tree_model_get(model, iter, column, &store_string, -1);
217         }
218
219         if (!store_string || !key)
220                 return FALSE;
221
222         retval = (strcasestr(store_string, key) == NULL);
223
224         g_free(store_string);
225
226         return retval;
227 }
228
229 static void foldersel_size_allocate_cb(GtkWidget *widget,
230                                          GtkAllocation *allocation)
231 {
232         cm_return_if_fail(allocation != NULL);
233
234         prefs_common.folderselwin_width = allocation->width;
235         prefs_common.folderselwin_height = allocation->height;
236 }
237
238 static void foldersel_create(const gchar *title)
239 {
240         GtkWidget *vbox;
241         GtkWidget *scrolledwin;
242         GtkWidget *confirm_area;
243         GtkWidget *label;
244         GtkTreeViewColumn *column;
245         GtkCellRenderer *renderer;
246         GtkTreeSelection *selection;
247         static GdkGeometry geometry;
248
249         window = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "foldersel");
250         gtk_window_set_title(GTK_WINDOW(window),_("Select folder"));
251         gtk_container_set_border_width(GTK_CONTAINER(window), 4);
252         gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
253         gtk_window_set_resizable(GTK_WINDOW(window), TRUE);
254         gtk_window_set_type_hint(GTK_WINDOW(window), GDK_WINDOW_TYPE_HINT_DIALOG);
255
256         gtk_widget_realize(window);
257         g_signal_connect(G_OBJECT(window), "delete_event",
258                          G_CALLBACK(delete_event), NULL);
259         g_signal_connect(G_OBJECT(window), "key_press_event",
260                          G_CALLBACK(key_pressed), NULL);
261         g_signal_connect(G_OBJECT(window), "size_allocate",
262                          G_CALLBACK(foldersel_size_allocate_cb), NULL);
263         MANAGE_WINDOW_SIGNALS_CONNECT(window);
264
265         vbox = gtk_vbox_new(FALSE, 4);
266         gtk_container_add(GTK_CONTAINER(window), vbox);
267
268         if (title != NULL) {
269                 label = gtk_label_new(title);
270                 gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
271                 gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);
272         }
273
274         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
275         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
276                                        GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
277         gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolledwin),
278                                             GTK_SHADOW_IN);
279         gtk_box_pack_start(GTK_BOX(vbox), scrolledwin, TRUE, TRUE, 0);
280
281         tree_store = gtk_tree_store_new(N_FOLDERSEL_COLUMNS,
282                                         G_TYPE_STRING,
283                                         G_TYPE_POINTER,
284                                         GDK_TYPE_PIXBUF,
285                                         GDK_TYPE_PIXBUF,
286                                         GDK_TYPE_COLOR,
287                                         G_TYPE_INT);
288         gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(tree_store),
289                                         FOLDERSEL_FOLDERNAME,
290                                         foldersel_folder_name_compare,
291                                         NULL, NULL);
292
293         treeview = gtk_tree_view_new_with_model(GTK_TREE_MODEL(tree_store));
294         g_object_unref(G_OBJECT(tree_store));
295         gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(treeview), FALSE);
296         gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(treeview),
297                                      prefs_common.use_stripes_everywhere);
298         gtk_tree_view_set_enable_tree_lines(GTK_TREE_VIEW(treeview), FALSE);
299         gtk_tree_view_set_search_column(GTK_TREE_VIEW(treeview),
300                                         FOLDERSEL_FOLDERNAME);
301         if (prefs_common.folder_search_wildcard)
302                 gtk_tree_view_set_search_equal_func(GTK_TREE_VIEW(treeview),
303                                 foldersel_search_name_func, NULL, NULL);
304
305         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));
306         gtk_tree_selection_set_mode(selection, GTK_SELECTION_BROWSE);
307         gtk_tree_selection_set_select_function(selection, foldersel_selected,
308                                                NULL, NULL);
309
310         g_signal_connect(G_OBJECT(treeview), "row-activated",
311                          G_CALLBACK(foldersel_tree_activated), NULL);
312         gtk_container_add(GTK_CONTAINER(scrolledwin), treeview);
313
314         column = gtk_tree_view_column_new();
315         gtk_tree_view_column_set_spacing(column, 2);
316         renderer = gtk_cell_renderer_pixbuf_new();
317         gtk_tree_view_column_pack_start(column, renderer, FALSE);
318         gtk_tree_view_column_set_attributes
319                 (column, renderer,
320                  "pixbuf", FOLDERSEL_PIXBUF,
321                  "pixbuf-expander-open", FOLDERSEL_PIXBUF_OPEN,
322                  "pixbuf-expander-closed", FOLDERSEL_PIXBUF,
323                  NULL);
324
325         /* create text renderer */
326         renderer = gtk_cell_renderer_text_new();
327         gtk_cell_renderer_set_padding(renderer, 0, 0);
328         gtk_tree_view_column_pack_start(column, renderer, TRUE);
329         gtk_tree_view_column_set_attributes
330                 (column, renderer,
331                  "text", FOLDERSEL_FOLDERNAME,
332                  "foreground-gdk", FOLDERSEL_FOREGROUND,
333                  "weight", FOLDERSEL_BOLD,
334                  NULL);
335         g_object_set(G_OBJECT(renderer), "weight", PANGO_WEIGHT_BOLD, NULL);
336         gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
337
338         gtk_tree_view_append_column(GTK_TREE_VIEW(treeview), column);
339
340         statusbar = gtk_statusbar_new();
341         statusbar_cid = gtk_statusbar_get_context_id(
342                         GTK_STATUSBAR(statusbar), "Select Folder Dialog" );
343         gtk_box_pack_start(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
344         g_signal_connect(G_OBJECT(statusbar), "activate",
345                          G_CALLBACK(foldersel_entry_activated), NULL);
346
347         gtkut_stock_button_set_create(&confirm_area,
348                                       &new_button,    GTK_STOCK_NEW,
349                                       &cancel_button, GTK_STOCK_CANCEL,
350                                       &ok_button,     GTK_STOCK_OK);
351
352         gtk_box_pack_end(GTK_BOX(vbox), confirm_area, FALSE, FALSE, 0);
353         gtk_widget_grab_default(ok_button);
354
355         g_signal_connect(G_OBJECT(ok_button), "clicked",
356                          G_CALLBACK(foldersel_ok), NULL);
357         g_signal_connect(G_OBJECT(cancel_button), "clicked",
358                          G_CALLBACK(foldersel_cancel), NULL);
359         g_signal_connect(G_OBJECT(new_button), "clicked",
360                          G_CALLBACK(foldersel_new_folder), NULL);
361
362         if (!geometry.min_height) {
363                 geometry.min_width = 300;
364                 geometry.min_height = 360;
365         }
366
367         gtk_window_set_geometry_hints(GTK_WINDOW(window), NULL, &geometry,
368                                       GDK_HINT_MIN_SIZE);
369         gtk_widget_set_size_request(window, prefs_common.folderselwin_width,
370                                     prefs_common.folderselwin_height);
371
372         gtk_widget_show_all(vbox);
373 }
374
375 static void foldersel_init(void)
376 {
377         stock_pixbuf_gdk(STOCK_PIXMAP_DIR_CLOSE, &folder_pixbuf);
378         stock_pixbuf_gdk(STOCK_PIXMAP_DIR_OPEN, &folderopen_pixbuf);
379         stock_pixbuf_gdk(STOCK_PIXMAP_DIR_NOSELECT_CLOSE, &foldernoselect_pixbuf);
380         stock_pixbuf_gdk(STOCK_PIXMAP_DIR_NOSELECT_OPEN, &foldernoselectopen_pixbuf);
381 }
382
383 void foldersel_reflect_prefs_pixmap_theme(void)
384 {
385         if (folder_pixbuf)
386                 g_object_unref(folder_pixbuf);
387         if (folderopen_pixbuf)
388                 g_object_unref(folderopen_pixbuf);
389         if (foldernoselect_pixbuf)
390                 g_object_unref(foldernoselect_pixbuf);
391         if (foldernoselectopen_pixbuf)
392                 g_object_unref(foldernoselectopen_pixbuf);
393         foldersel_init();
394 }
395
396 static void foldersel_append_item(GtkTreeStore *store, FolderItem *item,
397                                   GtkTreeIter *iter, GtkTreeIter *parent)
398 {
399         gchar *name, *tmpname;
400         GdkPixbuf *pixbuf, *pixbuf_open;
401         gboolean use_color;
402         PangoWeight weight = PANGO_WEIGHT_NORMAL;
403         GdkColor *foreground = NULL;
404         static GdkColor color_noselect = {0, COLOR_DIM, COLOR_DIM, COLOR_DIM};
405         static GdkColor color_new;
406
407         gtkut_convert_int_to_gdk_color(prefs_common.color[COL_NEW], &color_new);
408
409         name = folder_item_get_name(item);
410
411         if (folder_has_parent_of_type(item, F_QUEUE) && item->total_msgs > 0) {
412                 tmpname = g_strdup_printf("%s (%d)", name, item->total_msgs);
413         } else if (item->unread_msgs > 0) {
414                 tmpname = g_strdup_printf("%s (%d)", name, item->unread_msgs);
415         } else
416                 tmpname = g_strdup(name);
417
418         g_free(name);
419         name = tmpname;
420
421         pixbuf = item->no_select ? foldernoselect_pixbuf : folder_pixbuf;
422         pixbuf_open =
423                 item->no_select ? foldernoselectopen_pixbuf : folderopen_pixbuf;
424
425         if (folder_has_parent_of_type(item, F_DRAFT) ||
426             folder_has_parent_of_type(item, F_OUTBOX) ||
427             folder_has_parent_of_type(item, F_TRASH)) {
428                 use_color = FALSE;
429         } else if (folder_has_parent_of_type(item, F_QUEUE)) {
430                 use_color = (item->total_msgs > 0);
431                 if (item->total_msgs > 0)
432                         weight = PANGO_WEIGHT_BOLD;
433         } else {
434                 if (item->unread_msgs > 0)
435                         weight = PANGO_WEIGHT_BOLD;
436                 use_color = (item->new_msgs > 0);
437         }
438
439         if (item->no_select)
440                 foreground = &color_noselect;
441         else if (use_color)
442                 foreground = &color_new;
443
444         /* insert this node */
445         gtk_tree_store_append(store, iter, parent);
446         gtk_tree_store_set(store, iter,
447                            FOLDERSEL_FOLDERNAME, name,
448                            FOLDERSEL_FOLDERITEM, item,
449                            FOLDERSEL_PIXBUF, pixbuf,
450                            FOLDERSEL_PIXBUF_OPEN, pixbuf_open,
451                            FOLDERSEL_FOREGROUND, foreground,
452                            FOLDERSEL_BOLD, weight,
453                            -1);
454         
455         g_free(name);
456 }
457
458 static void foldersel_insert_gnode_in_store(GtkTreeStore *store, GNode *node,
459                                             GtkTreeIter *parent)
460 {
461         FolderItem *item;
462         GtkTreeIter child;
463         GNode *iter;
464
465         cm_return_if_fail(node != NULL);
466         cm_return_if_fail(node->data != NULL);
467         cm_return_if_fail(store != NULL);
468
469         item = FOLDER_ITEM(node->data);
470         foldersel_append_item(store, item, &child, parent);
471
472         /* insert its children (this node as parent) */
473         for (iter = node->children; iter != NULL; iter = iter->next)
474                 foldersel_insert_gnode_in_store(store, iter, &child);
475 }
476
477 static void foldersel_set_tree(Folder *cur_folder, FolderSelectionType type)
478 {
479         Folder *folder;
480         GList *list;
481
482         for (list = folder_get_list(); list != NULL; list = list->next) {
483                 folder = FOLDER(list->data);
484                 cm_return_if_fail(folder != NULL);
485
486                 if (type != FOLDER_SEL_ALL) {
487                         if (FOLDER_TYPE(folder) == F_NEWS)
488                                 continue;
489                 }
490                 
491                 if (cur_folder && (cur_folder->klass != folder->klass
492                     && g_strcmp0(cur_folder->name, folder->name) != 0))
493                     continue;
494                 
495                 foldersel_insert_gnode_in_store(tree_store, folder->node, NULL);
496         }
497
498         gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(tree_store),
499                                              FOLDERSEL_FOLDERNAME,
500                                              GTK_SORT_ASCENDING);
501
502         gtk_tree_view_expand_all(GTK_TREE_VIEW(treeview));
503 }
504
505 #include "localfolder.h"
506 static gboolean foldersel_selected(GtkTreeSelection *selection,
507                                    GtkTreeModel *model, GtkTreePath *path,
508                                    gboolean currently_selected, gpointer data)
509 {
510         GtkTreeIter iter;
511         FolderItem *item = NULL;
512
513         if (currently_selected)
514                 return TRUE;
515
516         if (!gtk_tree_model_get_iter(GTK_TREE_MODEL(model), &iter, path))
517                 return TRUE;
518
519         gtk_tree_model_get(GTK_TREE_MODEL(tree_store), &iter,
520                            FOLDERSEL_FOLDERITEM, &item, -1);
521
522         selected_item = item;
523         if (selected_item && selected_item->path) {
524                 gchar *id;
525                 id = folder_item_get_identifier(selected_item);
526                 gtk_statusbar_push(GTK_STATUSBAR(statusbar), statusbar_cid, id);
527                 g_free(id);
528         } else if (root_selectable && selected_item && selected_item->folder &&
529                    (FOLDER_TYPE(selected_item->folder) == F_MH ||
530                     FOLDER_TYPE(selected_item->folder) == F_MBOX ||
531                     FOLDER_TYPE(selected_item->folder) == F_IMAP)) {
532                 gchar *id = folder_get_identifier(selected_item->folder);
533                 gtk_statusbar_push(GTK_STATUSBAR(statusbar), statusbar_cid,  id);
534                 g_free(id);
535         } else
536                 gtk_statusbar_push(GTK_STATUSBAR(statusbar), statusbar_cid, "");
537
538         return TRUE;
539 }
540
541 static void foldersel_ok(GtkButton *button, gpointer data)
542 {
543         finished = TRUE;
544 }
545
546 static void foldersel_cancel(GtkButton *button, gpointer data)
547 {
548         cancelled = TRUE;
549         finished = TRUE;
550 }
551
552 static void foldersel_new_folder(GtkButton *button, gpointer data)
553 {
554         FolderItem *new_item;
555         gchar *new_folder;
556         gchar *disp_name;
557         gchar *p;
558         GtkTreeIter selected, new_child;
559         GtkTreePath *selected_p, *new_child_p;
560         GtkTreeStore *store;
561         GtkTreeModel *model;
562         GtkTreeSelection *selection;
563
564         if (!selected_item || FOLDER_TYPE(selected_item->folder) == F_NEWS)
565                 return;
566
567         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));
568         if (!gtk_tree_selection_get_selected(selection, &model, &selected))
569                 return;
570         store = GTK_TREE_STORE(model);
571
572         new_folder = input_dialog(_("New folder"),
573                                   _("Input the name of new folder:"),
574                                   _("NewFolder"));
575         if (!new_folder) return;
576         AUTORELEASE_STR(new_folder, {g_free(new_folder); return;});
577
578         p = strchr(new_folder, G_DIR_SEPARATOR);
579         if ((p && FOLDER_TYPE(selected_item->folder) != F_IMAP) ||
580             (p && FOLDER_TYPE(selected_item->folder) == F_IMAP &&
581              *(p + 1) != '\0')) {
582                 alertpanel_error(_("'%c' can't be included in folder name."),
583                                 G_DIR_SEPARATOR);
584                 return;
585         }
586
587         if (FOLDER_TYPE(selected_item->folder) != F_IMAP &&
588                         FOLDER_TYPE(selected_item->folder) != F_NEWS &&
589                         !folder_local_name_ok(new_folder))
590                 return;
591
592         disp_name = trim_string(new_folder, 32);
593         AUTORELEASE_STR(disp_name, {g_free(disp_name); return;});
594
595         /* find whether the directory already exists */
596         if (folder_find_child_item_by_name(selected_item, new_folder)) {
597                 alertpanel_error(_("The folder '%s' already exists."),
598                                  disp_name);
599                 return;
600         }
601
602         new_item = folder_create_folder(selected_item, new_folder);
603         if (!new_item) {
604                 alertpanel_error(_("Can't create the folder '%s'."), disp_name);
605                 return;
606         }
607
608         /* add new child */
609         foldersel_append_item(store, new_item, &new_child, &selected);
610         
611         selected_p = gtk_tree_model_get_path(GTK_TREE_MODEL(store), &selected);
612         new_child_p = gtk_tree_model_get_path(GTK_TREE_MODEL(store),
613                                               &new_child);
614
615         gtk_tree_view_expand_row(GTK_TREE_VIEW(treeview), selected_p, FALSE);
616         gtk_tree_selection_select_iter(selection, &new_child);
617         gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(treeview), new_child_p,
618                                      NULL, TRUE, 0.5, 0.0);
619         gtk_tree_path_free(new_child_p);
620         gtk_tree_path_free(selected_p);
621
622         folder_write_list();
623 }
624
625 static void foldersel_entry_activated(GtkEntry *entry, gpointer data)
626 {
627         gtk_button_clicked(GTK_BUTTON(ok_button));
628 }
629
630 static void foldersel_tree_activated(GtkTreeView *treeview, GtkTreePath *path,
631                                      GtkTreeViewColumn *column, gpointer data)
632 {
633         gtk_button_clicked(GTK_BUTTON(ok_button));
634 }
635
636 static gint delete_event(GtkWidget *widget, GdkEventAny *event, gpointer data)
637 {
638         foldersel_cancel(NULL, NULL);
639         return TRUE;
640 }
641
642 static gboolean key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
643 {
644         if (!event)
645                 return FALSE;
646
647         if (event->keyval == GDK_KEY_Escape) {
648                 foldersel_cancel(NULL, NULL);
649                 return TRUE;
650         }
651
652         GtkTreePath *path = NULL;
653         gtk_tree_view_get_cursor(GTK_TREE_VIEW(treeview), &path, NULL);
654         if (path == NULL)
655                 return FALSE;
656
657         switch (event->keyval) {
658                 case GDK_KEY_Left:
659                         if (gtk_tree_view_row_expanded(GTK_TREE_VIEW(treeview), path)) {
660                                 gtk_tree_view_collapse_row(GTK_TREE_VIEW(treeview), path);
661                         } else {
662                                 gtk_tree_path_up(path);
663                                 gtk_tree_view_set_cursor(GTK_TREE_VIEW(treeview), path, NULL, FALSE);
664                         }
665                         return TRUE;
666                         break;
667                 case GDK_KEY_Right:
668                         if (!gtk_tree_view_row_expanded(GTK_TREE_VIEW(treeview), path)) {
669                                 gtk_tree_view_expand_row(GTK_TREE_VIEW(treeview), path, FALSE);
670                         } else {
671                                 gtk_tree_path_down(path);
672                                 gtk_tree_view_set_cursor(GTK_TREE_VIEW(treeview), path, NULL, FALSE);
673                         }
674                         return TRUE;
675                         break;
676         }
677
678         gtk_tree_path_free(path);
679
680         return FALSE;
681 }
682
683 static gint foldersel_folder_name_compare(GtkTreeModel *model, GtkTreeIter *a,
684                                           GtkTreeIter *b, gpointer context)
685 {
686         gchar *str_a = NULL, *str_b = NULL;
687         gint val = 0;
688         FolderItem *item_a = NULL, *item_b = NULL;
689         GtkTreeIter parent;
690
691         gtk_tree_model_get(model, a, FOLDERSEL_FOLDERITEM, &item_a, -1);
692         gtk_tree_model_get(model, b, FOLDERSEL_FOLDERITEM, &item_b, -1);
693
694         /* no sort for root folder */
695         if (!gtk_tree_model_iter_parent(GTK_TREE_MODEL(model), &parent, a))
696                 return 0;
697
698         /* if both a and b are special folders, sort them according to
699          * their types (which is in-order). Note that this assumes that
700          * there are no multiple folders of a special type. */
701         if (item_a->stype != F_NORMAL && item_b->stype != F_NORMAL)
702                 return item_a->stype - item_b->stype;
703
704         /* if b is normal folder, and a is not, b is smaller (ends up
705          * lower in the list) */
706         if (item_a->stype != F_NORMAL && item_b->stype == F_NORMAL)
707                 return item_b->stype - item_a->stype;
708
709         /* if b is special folder, and a is not, b is larger (ends up
710          * higher in the list) */
711         if (item_a->stype == F_NORMAL && item_b->stype != F_NORMAL)
712                 return item_b->stype - item_a->stype;
713
714         /* XXX g_utf8_collate_key() comparisons may speed things
715          * up when having large lists of folders */
716         gtk_tree_model_get(model, a, FOLDERSEL_FOLDERNAME, &str_a, -1);
717         gtk_tree_model_get(model, b, FOLDERSEL_FOLDERNAME, &str_b, -1);
718
719         /* otherwise just compare the folder names */
720         val = g_utf8_collate(str_a, str_b);
721
722         g_free(str_a);
723         g_free(str_b);
724
725         return val;
726 }
727
728 static gboolean tree_view_folder_item_func(GtkTreeModel *model,
729                                            GtkTreePath *path,
730                                            GtkTreeIter *iter,
731                                            FolderItemSearch *data)
732 {
733         FolderItem *item = NULL;
734
735         gtk_tree_model_get(model, iter, FOLDERSEL_FOLDERITEM, &item, -1);
736
737         if (data->item == item) {
738                 data->path = gtk_tree_path_copy(path);
739                 data->iter = *iter;
740                 return TRUE;
741         }
742
743         return FALSE;
744 }