2005-08-18 [martin] 1.9.13cvs36
[claws.git] / src / grouplistdialog.c
1 /*
2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3  * Copyright (C) 1999-2005 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 2 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, write to the Free Software
17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18  */
19
20 #ifdef HAVE_CONFIG_H
21 #  include "config.h"
22 #endif
23
24 #include "defs.h"
25
26 #include <glib.h>
27 #include <glib/gi18n.h>
28 #include <gdk/gdkkeysyms.h>
29 #include <gtk/gtkmain.h>
30 #include <gtk/gtkwidget.h>
31 #include <gtk/gtkdialog.h>
32 #include <gtk/gtkwindow.h>
33 #include <gtk/gtksignal.h>
34 #include <gtk/gtkvbox.h>
35 #include <gtk/gtkhbox.h>
36 #include <gtk/gtklabel.h>
37 #include <gtk/gtkentry.h>
38 #include <gtk/gtkctree.h>
39 #include <gtk/gtkscrolledwindow.h>
40 #include <gtk/gtkbutton.h>
41 #include <gtk/gtkhbbox.h>
42 #include <gtk/gtkstock.h>
43 #include <string.h>
44
45 #include "grouplistdialog.h"
46 #include "manage_window.h"
47 #include "gtkutils.h"
48 #include "utils.h"
49 #include "news.h"
50 #include "folder.h"
51 #include "alertpanel.h"
52 #include "recv.h"
53 #include "socket.h"
54
55 #define GROUPLIST_DIALOG_WIDTH          450
56 #define GROUPLIST_DIALOG_HEIGHT         400
57 #define GROUPLIST_COL_NAME_WIDTH        250
58
59 static gboolean ack;
60 static gboolean locked;
61
62 static GtkWidget *dialog;
63 static GtkWidget *entry;
64 static GtkWidget *ctree;
65 static GtkWidget *status_label;
66 static GtkWidget *ok_button;
67 static GSList *group_list;
68 static Folder *news_folder;
69
70 static GSList *subscribed;
71
72 static void grouplist_dialog_create     (void);
73 static void grouplist_dialog_set_list   (const gchar    *pattern,
74                                          gboolean        refresh);
75 static void grouplist_search            (void);
76 static void grouplist_clear             (void);
77 static gboolean grouplist_recv_func     (SockInfo       *sock,
78                                          gint            count,
79                                          gint            read_bytes,
80                                          gpointer        data);
81
82 static gint window_deleted      (GtkWidget      *widget,
83                                  GdkEventAny    *event,
84                                  gpointer        data);
85 static void ok_clicked          (GtkWidget      *widget,
86                                  gpointer        data);
87 static void cancel_clicked      (GtkWidget      *widget,
88                                  gpointer        data);
89 static void refresh_clicked     (GtkWidget      *widget,
90                                  gpointer        data);
91 static gboolean key_pressed     (GtkWidget      *widget,
92                                  GdkEventKey    *event,
93                                  gpointer        data);
94 static gboolean button_press_cb (GtkCTree       *ctree,
95                                  GdkEventButton *button,
96                                  gpointer        data);
97 static void entry_activated     (GtkEditable    *editable);
98 static void search_clicked      (GtkWidget      *widget,
99                                  gpointer        data);
100
101 GSList *grouplist_dialog(Folder *folder)
102 {
103         GNode *node;
104         FolderItem *item;
105
106         if (dialog && GTK_WIDGET_VISIBLE(dialog)) return NULL;
107
108         if (!dialog)
109                 grouplist_dialog_create();
110
111         news_folder = folder;
112
113         gtk_widget_show(dialog);
114         gtk_window_set_modal(GTK_WINDOW(dialog), TRUE);
115         manage_window_set_transient(GTK_WINDOW(dialog));
116         gtk_widget_grab_focus(ok_button);
117         gtk_widget_grab_focus(ctree);
118         GTK_EVENTS_FLUSH();
119
120         subscribed = NULL;
121         for (node = folder->node->children; node != NULL; node = node->next) {
122                 item = FOLDER_ITEM(node->data);
123                 subscribed = g_slist_append(subscribed, g_strdup(item->path));
124         }
125
126         grouplist_dialog_set_list(NULL, TRUE);
127
128         if (ack) gtk_main();
129
130         manage_window_focus_out(dialog, NULL, NULL);
131         gtk_widget_hide(dialog);
132
133         if (!ack) {
134                 slist_free_strings(subscribed);
135                 g_slist_free(subscribed);
136                 subscribed = NULL;
137
138                 for (node = folder->node->children; node != NULL;
139                      node = node->next) {
140                         item = FOLDER_ITEM(node->data);
141                         subscribed = g_slist_append(subscribed,
142                                                     g_strdup(item->path));
143                 }
144         }
145
146         grouplist_clear();
147
148         return subscribed;
149 }
150
151 static void grouplist_dialog_create(void)
152 {
153         GtkWidget *vbox;
154         GtkWidget *hbox;
155         GtkWidget *msg_label;
156         GtkWidget *search_button;
157         GtkWidget *confirm_area;
158         GtkWidget *cancel_button;       
159         GtkWidget *refresh_button;      
160         GtkWidget *scrolledwin;
161         gchar *titles[3];
162         gint i;
163
164         dialog = gtk_dialog_new();
165         gtk_window_set_resizable(GTK_WINDOW(dialog), TRUE);
166         gtk_widget_set_size_request(dialog,
167                                     GROUPLIST_DIALOG_WIDTH,
168                                     GROUPLIST_DIALOG_HEIGHT);
169         gtk_container_set_border_width
170                 (GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), 5);
171         gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
172         gtk_window_set_title(GTK_WINDOW(dialog), _("Newsgroup subscription"));
173         g_signal_connect(G_OBJECT(dialog), "delete_event",
174                          G_CALLBACK(window_deleted), NULL);
175         g_signal_connect(G_OBJECT(dialog), "key_press_event",
176                          G_CALLBACK(key_pressed), NULL);
177         MANAGE_WINDOW_SIGNALS_CONNECT(dialog);
178
179         gtk_widget_realize(dialog);
180
181         vbox = gtk_vbox_new(FALSE, 8);
182         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), vbox);
183         gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
184
185         hbox = gtk_hbox_new(FALSE, 0);
186         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
187
188         msg_label = gtk_label_new(_("Select newsgroups for subscription:"));
189         gtk_box_pack_start(GTK_BOX(hbox), msg_label, FALSE, FALSE, 0);
190
191         hbox = gtk_hbox_new(FALSE, 8);
192         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
193
194         msg_label = gtk_label_new(_("Find groups:"));
195         gtk_box_pack_start(GTK_BOX(hbox), msg_label, FALSE, FALSE, 0);
196
197         entry = gtk_entry_new();
198         gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
199         g_signal_connect(G_OBJECT(entry), "activate",
200                          G_CALLBACK(entry_activated), NULL);
201
202         search_button = gtk_button_new_with_label(_(" Search "));
203         gtk_box_pack_start(GTK_BOX(hbox), search_button, FALSE, FALSE, 0);
204
205         g_signal_connect(G_OBJECT(search_button), "clicked",
206                          G_CALLBACK(search_clicked), NULL);
207
208         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
209         gtk_box_pack_start(GTK_BOX (vbox), scrolledwin, TRUE, TRUE, 0);
210         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW (scrolledwin),
211                                        GTK_POLICY_ALWAYS,
212                                        GTK_POLICY_ALWAYS);
213
214         titles[0] = _("Newsgroup name");
215         titles[1] = _("Messages");
216         titles[2] = _("Type");
217         ctree = gtk_ctree_new_with_titles(3, 0, titles);
218         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
219         gtk_clist_set_column_width
220                 (GTK_CLIST(ctree), 0, GROUPLIST_COL_NAME_WIDTH);
221         gtk_clist_set_column_auto_resize(GTK_CLIST(ctree), 0, TRUE);
222         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_MULTIPLE);
223         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_DOTTED);
224         gtk_ctree_set_expander_style(GTK_CTREE(ctree),
225                                      GTK_CTREE_EXPANDER_SQUARE);
226         for (i = 0; i < 3; i++)
227                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
228                                        GTK_CAN_FOCUS);
229         g_signal_connect(G_OBJECT(ctree), "button-press-event",
230                          G_CALLBACK(button_press_cb), NULL);
231
232         hbox = gtk_hbox_new(FALSE, 0);
233         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
234
235         status_label = gtk_label_new("");
236         gtk_box_pack_start(GTK_BOX(hbox), status_label, FALSE, FALSE, 0);
237
238         gtkut_stock_button_set_create(&confirm_area,
239                                       &ok_button, GTK_STOCK_OK,
240                                       &cancel_button, GTK_STOCK_CANCEL,
241                                       &refresh_button, GTK_STOCK_REFRESH);
242         gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->action_area),
243                           confirm_area);
244         gtk_widget_grab_default(ok_button);
245
246         g_signal_connect(G_OBJECT(ok_button), "clicked",
247                          G_CALLBACK(ok_clicked), NULL);
248         g_signal_connect(G_OBJECT(cancel_button), "clicked",
249                          G_CALLBACK(cancel_clicked), NULL);
250         g_signal_connect(G_OBJECT(refresh_button), "clicked",
251                          G_CALLBACK(refresh_clicked), NULL);
252
253         gtk_widget_show_all(GTK_DIALOG(dialog)->vbox);
254 }
255
256 static GHashTable *branch_node_table;
257
258 static void grouplist_hash_init(void)
259 {
260         branch_node_table = g_hash_table_new(g_str_hash, g_str_equal);
261 }
262
263 static void grouplist_hash_done(void)
264 {
265         hash_free_strings(branch_node_table);
266         g_hash_table_destroy(branch_node_table);
267 }
268
269 static GtkCTreeNode *grouplist_hash_get_branch_node(const gchar *name)
270 {
271         return g_hash_table_lookup(branch_node_table, name);
272 }
273
274 static void grouplist_hash_set_branch_node(const gchar *name,
275                                            GtkCTreeNode *node)
276 {
277         g_hash_table_insert(branch_node_table, g_strdup(name), node);
278 }
279
280 static gchar *grouplist_get_parent_name(const gchar *name)
281 {
282         gchar *p;
283
284         p = strrchr(name, '.');
285         if (!p)
286                 return g_strdup("");
287         return g_strndup(name, p - name);
288 }
289
290 static GtkCTreeNode *grouplist_create_parent(const gchar *name,
291                                              const gchar *pattern)
292 {
293         GtkCTreeNode *parent;
294         GtkCTreeNode *node;
295         gchar *cols[3];
296         gchar *parent_name;
297
298         if (*name == '\0') return NULL;
299         node = grouplist_hash_get_branch_node(name);
300         if (node != NULL) return node;
301
302         cols[0] = (gchar *)name;
303         cols[1] = cols[2] = "";
304
305         parent_name = grouplist_get_parent_name(name);
306         parent = grouplist_create_parent(parent_name, pattern);
307
308         node = parent ? GTK_CTREE_ROW(parent)->children
309                 : GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
310         node = gtk_ctree_insert_node(GTK_CTREE(ctree), parent, node,
311                                      cols, 0, NULL, NULL, NULL, NULL,
312                                      FALSE, FALSE);
313         if (parent && g_pattern_match_simple(pattern, parent_name) == FALSE)
314                 gtk_ctree_expand(GTK_CTREE(ctree), parent);
315         gtk_ctree_node_set_selectable(GTK_CTREE(ctree), node, FALSE);
316
317         grouplist_hash_set_branch_node(name, node);
318
319         g_free(parent_name);
320
321         return node;
322 }
323
324 static GtkCTreeNode *grouplist_create_branch(NewsGroupInfo *ginfo,
325                                              const gchar *pattern)
326 {
327         GtkCTreeNode *node;
328         GtkCTreeNode *parent;
329         gchar *name = (gchar *)ginfo->name;
330         gchar *parent_name;
331         gchar *count_str;
332         gchar *cols[3];
333         gint count;
334
335         count = ginfo->last - ginfo->first;
336         if (count < 0)
337                 count = 0;
338         count_str = itos(count);
339
340         cols[0] = ginfo->name;
341         cols[1] = count_str;
342         if (ginfo->type == 'y')
343                 cols[2] = "";
344         else if (ginfo->type == 'm')
345                 cols[2] = _("moderated");
346         else if (ginfo->type == 'n')
347                 cols[2] = _("readonly");
348         else
349                 cols[2] = _("unknown");
350
351         parent_name = grouplist_get_parent_name(name);
352         parent = grouplist_create_parent(parent_name, pattern);
353         node = grouplist_hash_get_branch_node(name);
354         if (node) {
355                 gtk_ctree_set_node_info(GTK_CTREE(ctree), node, cols[0], 0,
356                                         NULL, NULL, NULL, NULL, FALSE, FALSE);
357                 gtk_ctree_node_set_text(GTK_CTREE(ctree), node, 1, cols[1]);
358                 gtk_ctree_node_set_text(GTK_CTREE(ctree), node, 2, cols[2]);
359         } else {
360                 node = parent ? GTK_CTREE_ROW(parent)->children
361                         : GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
362                 node = gtk_ctree_insert_node(GTK_CTREE(ctree), parent, node,
363                                              cols, 0, NULL, NULL, NULL, NULL,
364                                              TRUE, FALSE);
365                 if (parent &&
366                     g_pattern_match_simple(pattern, parent_name) == FALSE)
367                         gtk_ctree_expand(GTK_CTREE(ctree), parent);
368         }
369         gtk_ctree_node_set_selectable(GTK_CTREE(ctree), node, TRUE);
370         if (node)
371                 gtk_ctree_node_set_row_data(GTK_CTREE(ctree), node, ginfo);
372
373         g_free(parent_name);
374
375         return node;
376 }
377
378 static void grouplist_expand_upwards(GtkCTree *ctree, const gchar *name) {
379         const gchar *ptr;
380         gchar *newname=g_malloc0(strlen(name));
381
382         for (ptr=name; *ptr; ptr++) {
383                 if (*ptr == '.')
384                         gtk_ctree_expand(ctree, 
385                                 grouplist_hash_get_branch_node(newname));
386                 newname[ptr-name] = *ptr;
387         }
388         g_free(newname);
389 }
390
391 static void grouplist_dialog_set_list(const gchar *pattern, gboolean refresh)
392 {
393         GSList *cur;
394         GtkCTreeNode *node;
395         GPatternSpec *pspec;
396
397         if (locked) return;
398         locked = TRUE;
399
400         if (!pattern || *pattern == '\0')
401                 pattern = "*";
402
403         if (refresh) {
404                 ack = TRUE;
405                 grouplist_clear();
406                 recv_set_ui_func(grouplist_recv_func, NULL);
407                 group_list = news_get_group_list(news_folder);
408                 group_list = g_slist_reverse(group_list);
409                 recv_set_ui_func(NULL, NULL);
410                 if (group_list == NULL && ack == TRUE) {
411                         alertpanel_error(_("Can't retrieve newsgroup list."));
412                         locked = FALSE;
413                         return;
414                 }
415         } else
416                 gtk_clist_clear(GTK_CLIST(ctree));
417
418         gtk_entry_set_text(GTK_ENTRY(entry), pattern);
419
420         grouplist_hash_init();
421
422         gtk_clist_freeze(GTK_CLIST(ctree));
423
424         pspec = g_pattern_spec_new(pattern);
425
426         for (cur = group_list; cur != NULL ; cur = cur->next) {
427                 NewsGroupInfo *ginfo = (NewsGroupInfo *)cur->data;
428
429                 if (g_pattern_match_string(pspec, ginfo->name)) {
430                         node = grouplist_create_branch(ginfo, pattern);
431                         if (g_slist_find_custom(subscribed, ginfo->name,
432                                                 (GCompareFunc)g_ascii_strcasecmp)
433                             != NULL)
434                                 gtk_ctree_select(GTK_CTREE(ctree), node);
435                 }
436         }
437         for (cur = subscribed; cur; cur = g_slist_next(cur))
438                 grouplist_expand_upwards(GTK_CTREE(ctree), (gchar *)cur->data);
439
440         g_pattern_spec_free(pspec);
441
442         gtk_clist_thaw(GTK_CLIST(ctree));
443
444         grouplist_hash_done();
445
446         gtk_label_set_text(GTK_LABEL(status_label), _("Done."));
447
448         locked = FALSE;
449 }
450
451 static void grouplist_search(void)
452 {
453         gchar *str;
454
455         if (locked) return;
456
457         str = gtk_editable_get_chars(GTK_EDITABLE(entry), 0, -1);
458         grouplist_dialog_set_list(str, FALSE);
459         g_free(str);
460 }
461
462 static void grouplist_clear(void)
463 {
464         gtk_clist_clear(GTK_CLIST(ctree));
465         gtk_entry_set_text(GTK_ENTRY(entry), "");
466         news_group_list_free(group_list);
467         group_list = NULL;
468 }
469
470 static gboolean grouplist_recv_func(SockInfo *sock, gint count, gint read_bytes,
471                                     gpointer data)
472 {
473         gchar buf[BUFFSIZE];
474
475         g_snprintf(buf, sizeof(buf),
476                    _("%d newsgroups received (%s read)"),
477                    count, to_human_readable(read_bytes));
478         gtk_label_set_text(GTK_LABEL(status_label), buf);
479         GTK_EVENTS_FLUSH();
480         if (ack == FALSE)
481                 return FALSE;
482         else
483                 return TRUE;
484 }
485
486 static gint window_deleted(GtkWidget *widget, GdkEventAny *event, gpointer data)
487 {
488         ack = FALSE;
489         if (gtk_main_level() > 1)
490                 gtk_main_quit();
491
492         return TRUE;
493 }
494
495 static void ok_clicked(GtkWidget *widget, gpointer data)
496 {
497         ack = TRUE;
498         if (gtk_main_level() > 1)
499                 gtk_main_quit();
500 }
501
502 static void cancel_clicked(GtkWidget *widget, gpointer data)
503 {
504         ack = FALSE;
505         if (gtk_main_level() > 1)
506                 gtk_main_quit();
507 }
508
509 static void refresh_clicked(GtkWidget *widget, gpointer data)
510
511         gchar *str;
512
513         if (locked) return;
514
515         news_remove_group_list_cache(news_folder);
516
517         str = gtk_editable_get_chars(GTK_EDITABLE(entry), 0, -1);
518         grouplist_dialog_set_list(str, TRUE);
519         g_free(str);
520 }
521
522 static gboolean key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
523 {
524         if (event && event->keyval == GDK_Escape)
525                 cancel_clicked(NULL, NULL);
526         return FALSE;
527 }
528
529 /* clist/ctree clear old selection on click (gtk2 only)
530  * - intercept all button clicks (always return TRUE)
531  * - only allow left button single click
532  * - handle click on expander
533  * - update "subscribed" list and un-/select row
534  */
535 static gboolean button_press_cb(GtkCTree *ctree, GdkEventButton *button,
536                                 gpointer data)
537 {
538         gint row, col;
539         GtkCTreeNode *node;
540         NewsGroupInfo *ginfo;
541         GSList *list;
542
543         if (button->type != GDK_BUTTON_PRESS) return TRUE;
544         if (button->button != 1) return TRUE;
545
546         gtk_clist_get_selection_info(GTK_CLIST(ctree), 
547                                      button->x, button->y, &row, &col);
548         node = gtk_ctree_node_nth(ctree, row);
549         if (!node) return TRUE;
550
551         if (gtk_ctree_is_hot_spot(ctree, button->x, button->y)) {
552                 gtk_ctree_toggle_expansion(ctree, node);
553                 return TRUE;
554         }
555
556         ginfo = gtk_ctree_node_get_row_data(ctree, node);
557         if (!ginfo) return TRUE;
558
559         list = g_slist_find_custom(subscribed, ginfo->name,
560                                    (GCompareFunc)g_ascii_strcasecmp);
561         if (list) {
562                 g_free(list->data);
563                 subscribed = g_slist_remove(subscribed, list->data);
564                 gtk_clist_unselect_row(GTK_CLIST(ctree), row, 0);
565         } else {
566                 subscribed = g_slist_append(subscribed, g_strdup(ginfo->name));
567                 gtk_clist_select_row(GTK_CLIST(ctree), row, 0);
568         }
569
570         return TRUE;
571 }
572
573 static void entry_activated(GtkEditable *editable)
574 {
575         grouplist_search();
576 }
577
578 static void search_clicked(GtkWidget *widget, gpointer data)
579 {
580         grouplist_search();
581 }