0.8.11claws49
[claws.git] / src / mimeview.c
1 /*
2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3  * Copyright (C) 1999-2002 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 <gdk/gdkkeysyms.h>
28 #include <gtk/gtknotebook.h>
29 #include <gtk/gtkscrolledwindow.h>
30 #include <gtk/gtkctree.h>
31 #include <gtk/gtkvbox.h>
32 #include <gtk/gtkvpaned.h>
33 #include <gtk/gtktext.h>
34 #include <gtk/gtksignal.h>
35 #include <gtk/gtkmenu.h>
36 #include <gtk/gtkdnd.h>
37 #include <gtk/gtkselection.h>
38 #include <stdio.h>
39 #include <unistd.h>
40 #include <fnmatch.h>
41  
42 #include "intl.h"
43 #include "main.h"
44 #include "mimeview.h"
45 #include "textview.h"
46 #include "procmime.h"
47 #include "summaryview.h"
48 #include "menu.h"
49 #include "filesel.h"
50 #include "alertpanel.h"
51 #include "inputdialog.h"
52 #include "utils.h"
53 #include "gtkutils.h"
54 #include "prefs_common.h"
55 #include "rfc2015.h"
56 #include "pgptext.h"
57
58 typedef enum
59 {
60         COL_MIMETYPE = 0,
61         COL_SIZE     = 1,
62         COL_NAME     = 2
63 } MimeViewColumnPos;
64
65 #define N_MIMEVIEW_COLS 3
66
67 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
68                                                  MimeInfo       *mimeinfo,
69                                                  GtkCTreeNode   *parent);
70 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
71                                                  MimeInfo       *partinfo,
72                                                  GtkCTreeNode   *parent);
73 static void mimeview_show_message_part          (MimeView       *mimeview,
74                                                  MimeInfo       *partinfo);
75 static void mimeview_change_view_type           (MimeView       *mimeview,
76                                                  MimeViewType    type);
77 static void mimeview_clear                      (MimeView       *mimeview);
78
79 static void mimeview_selected           (GtkCTree       *ctree,
80                                          GtkCTreeNode   *node,
81                                          gint            column,
82                                          MimeView       *mimeview);
83 static void mimeview_start_drag         (GtkWidget      *widget,
84                                          gint            button,
85                                          GdkEvent       *event,
86                                          MimeView       *mimeview);
87 static gint mimeview_button_pressed     (GtkWidget      *widget,
88                                          GdkEventButton *event,
89                                          MimeView       *mimeview);
90 static gint mimeview_key_pressed        (GtkWidget      *widget,
91                                          GdkEventKey    *event,
92                                          MimeView       *mimeview);
93
94 static void mimeview_drag_data_get      (GtkWidget        *widget,
95                                          GdkDragContext   *drag_context,
96                                          GtkSelectionData *selection_data,
97                                          guint             info,
98                                          guint             time,
99                                          MimeView         *mimeview);
100
101 static void mimeview_display_as_text    (MimeView       *mimeview);
102 static void mimeview_save_as            (MimeView       *mimeview);
103 static void mimeview_save_all           (MimeView       *mimeview);
104 static void mimeview_launch             (MimeView       *mimeview);
105 static void mimeview_open_with          (MimeView       *mimeview);
106 static void mimeview_view_file          (const gchar    *filename,
107                                          MimeInfo       *partinfo,
108                                          const gchar    *cmdline);
109
110 static GtkItemFactoryEntry mimeview_popup_entries[] =
111 {
112         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
113         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
114         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
115         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
116         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
117 #if USE_GPGME
118         ,
119         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
120 #endif
121 };
122
123 static GtkTargetEntry mimeview_mime_types[] =
124 {
125         {"text/uri-list", 0, 0}
126 };
127
128 GSList *mimeviewer_factories;
129 GSList *mimeviews;
130
131 MimeView *mimeview_create(void)
132 {
133         MimeView *mimeview;
134
135         GtkWidget *notebook;
136         GtkWidget *vbox;
137         GtkWidget *paned;
138         GtkWidget *scrolledwin;
139         GtkWidget *ctree;
140         GtkWidget *mime_vbox;
141         GtkWidget *popupmenu;
142         GtkItemFactory *popupfactory;
143         gchar *titles[N_MIMEVIEW_COLS];
144         gint n_entries;
145         gint i;
146
147         debug_print("Creating MIME view...\n");
148         mimeview = g_new0(MimeView, 1);
149
150         titles[COL_MIMETYPE] = _("MIME Type");
151         titles[COL_SIZE]     = _("Size");
152         titles[COL_NAME]     = _("Name");
153
154         notebook = gtk_notebook_new();
155         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
156
157         vbox = gtk_vbox_new(FALSE, 0);
158         gtk_container_add(GTK_CONTAINER(notebook), vbox);
159         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), vbox,
160                                         _("Text"));
161
162         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
163         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
164                                        GTK_POLICY_AUTOMATIC,
165                                        GTK_POLICY_ALWAYS);
166         gtk_widget_set_usize(scrolledwin, -1, 80);
167
168         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
169         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
170         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
171         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
172                                            GTK_JUSTIFY_RIGHT);
173         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
174         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 64);
175         for (i = 0; i < N_MIMEVIEW_COLS; i++)
176                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
177                                        GTK_CAN_FOCUS);
178         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
179
180         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
181                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
182         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
183                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
184         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
185                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
186         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
187                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
188         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
189                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
190     
191         mime_vbox = gtk_vbox_new(FALSE, 0);
192
193         paned = gtk_vpaned_new();
194         gtk_paned_add1(GTK_PANED(paned), scrolledwin);
195         gtk_paned_add2(GTK_PANED(paned), mime_vbox);
196         gtk_container_add(GTK_CONTAINER(notebook), paned);
197         gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), paned,
198                                         _("Attachments"));
199
200         gtk_widget_show_all(notebook);
201
202         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
203
204         n_entries = sizeof(mimeview_popup_entries) /
205                 sizeof(mimeview_popup_entries[0]);
206         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
207                                       "<MimeView>", &popupfactory, mimeview);
208
209         mimeview->notebook     = notebook;
210         mimeview->vbox         = vbox;
211         mimeview->paned        = paned;
212         mimeview->scrolledwin  = scrolledwin;
213         mimeview->ctree        = ctree;
214         mimeview->mime_vbox    = mime_vbox;
215         mimeview->popupmenu    = popupmenu;
216         mimeview->popupfactory = popupfactory;
217         mimeview->type         = -1;
218
219         mimeviews = g_slist_prepend(mimeviews, mimeview);
220
221         return mimeview;
222 }
223
224 void mimeview_init(MimeView *mimeview)
225 {
226 }
227
228 /* 
229  * Check whether the message is OpenPGP signed
230  */
231 #if USE_GPGME
232 static gboolean mimeview_is_signed(MimeView *mimeview)
233 {
234         MimeInfo *partinfo = NULL;
235
236         debug_print("mimeview_is signed of %p\n", mimeview);
237
238         if (!mimeview) return FALSE;
239         if (!mimeview->opened) return FALSE;
240
241         debug_print("mimeview_is_signed: open\n" );
242
243         if (!mimeview->file) return FALSE;
244
245         debug_print("mimeview_is_signed: file\n" );
246
247         partinfo = gtk_ctree_node_get_row_data
248                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
249         g_return_val_if_fail(partinfo != NULL, FALSE);
250
251         /* walk the tree and see whether there is a signature somewhere */
252         do {
253                 if (rfc2015_has_signature(partinfo))
254                         return TRUE;
255         } while ((partinfo = partinfo->parent) != NULL);
256
257         debug_print("mimeview_is_signed: FALSE\n" );
258
259         return FALSE;
260 }
261
262 static void set_unchecked_signature(MimeInfo *mimeinfo)
263 {
264         MimeInfo *sig_partinfo;
265
266         sig_partinfo = rfc2015_find_signature(mimeinfo);
267         if (sig_partinfo == NULL) return;
268
269         g_free(sig_partinfo->sigstatus);
270         sig_partinfo->sigstatus =
271                 g_strdup(_("Select \"Check signature\" to check"));
272
273         g_free(sig_partinfo->sigstatus_full);
274         sig_partinfo->sigstatus_full = NULL;
275 }
276 #endif /* USE_GPGME */
277
278 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
279                            const gchar *file)
280 {
281         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
282         GtkCTreeNode *node;
283         gchar buf[BUFFSIZE];
284         FILE *fp;
285
286         mimeview_clear(mimeview);
287         textview_clear(mimeview->messageview->textview);
288
289         g_return_if_fail(file != NULL);
290         g_return_if_fail(mimeinfo != NULL);
291
292         mimeview->mimeinfo = mimeinfo;
293
294         if ((fp = fopen(file, "rb")) == NULL) {
295                 FILE_OP_ERROR(file, "fopen");
296                 return;
297         }
298         mimeview->file = g_strdup(file);
299
300         /* skip MIME part headers */
301         if (mimeinfo->mime_type == MIME_MULTIPART) {
302                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
303                         perror("fseek");
304                 while (fgets(buf, sizeof(buf), fp) != NULL)
305                         if (buf[0] == '\r' || buf[0] == '\n') break;
306         }
307
308         procmime_scan_multipart_message(mimeinfo, fp);
309 #if USE_GPGME
310         if ((prefs_common.auto_check_signatures)
311             && (gpg_started))
312                 rfc2015_check_signature(mimeinfo, fp);
313         else
314                 set_unchecked_signature(mimeinfo);
315 #endif
316
317         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
318                                          mimeview);
319
320         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
321
322         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
323                                            mimeview_selected, mimeview);
324
325         /* search first text part */
326         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
327              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
328                 MimeInfo *partinfo;
329
330                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
331                 if (partinfo &&
332                     (partinfo->mime_type == MIME_TEXT ||
333                      partinfo->mime_type == MIME_TEXT_HTML))
334                         break;
335         }
336         fclose(fp);
337         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
338
339         if (!node)
340                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
341
342         if (node) {
343                 gtk_ctree_select(ctree, node);
344                 gtkut_ctree_set_focus_row(ctree, node);
345                 gtk_widget_grab_focus(mimeview->ctree);
346         }
347 }
348
349 void mimeview_destroy(MimeView *mimeview)
350 {
351         GSList *cur;
352         
353         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
354                 MimeViewer *viewer = (MimeViewer *) cur->data;
355                 viewer->destroy_viewer(viewer);
356         }
357         g_slist_free(mimeview->viewers);
358
359         procmime_mimeinfo_free_all(mimeview->mimeinfo);
360         g_free(mimeview->file);
361         g_free(mimeview);
362
363         mimeviews = g_slist_remove(mimeviews, mimeview);
364 }
365
366 static void mimeview_set_multipart_tree(MimeView *mimeview,
367                                         MimeInfo *mimeinfo,
368                                         GtkCTreeNode *parent)
369 {
370         GtkCTreeNode *current = parent;
371
372         g_return_if_fail(mimeinfo != NULL);
373
374         if (!mimeinfo->sub && mimeinfo->parent)
375                 current = mimeview_append_part(mimeview, mimeinfo, parent);
376         if (mimeinfo->sub && !mimeinfo->sub->children &&
377             mimeinfo->sub->mime_type != MIME_TEXT &&
378             mimeinfo->sub->mime_type != MIME_TEXT_HTML) {
379                 mimeview_append_part(mimeview, mimeinfo->sub, parent);
380                 return;
381         }
382
383         if (mimeinfo->sub)
384                 mimeview_set_multipart_tree(mimeview, mimeinfo->sub, current);
385
386         if (mimeinfo->children)
387                 mimeview_set_multipart_tree(mimeview, mimeinfo->children, current);
388
389         if (mimeinfo->next)
390                 mimeview_set_multipart_tree(mimeview, mimeinfo->next, parent);
391 }
392
393 static gchar *get_part_name(MimeInfo *partinfo)
394 {
395 #if USE_GPGME
396         if (partinfo->sigstatus)
397                 return partinfo->sigstatus;
398         else
399 #endif
400         if (partinfo->name)
401                 return partinfo->name;
402         else if (partinfo->filename)
403                 return partinfo->filename;
404         else if (partinfo->description)
405                 return partinfo->description;
406         else
407                 return "";
408 }
409
410 static gchar *get_part_description(MimeInfo *partinfo)
411 {
412         if (partinfo->description)
413                 return partinfo->description;
414         else if (partinfo->name)
415                 return partinfo->name;
416         else if (partinfo->filename)
417                 return partinfo->filename;
418         else
419                 return "";
420 }
421
422 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
423                                           MimeInfo *partinfo,
424                                           GtkCTreeNode *parent)
425 {
426         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
427         GtkCTreeNode *node;
428         gchar *str[N_MIMEVIEW_COLS];
429
430         str[COL_MIMETYPE] =
431                 partinfo->content_type ? partinfo->content_type : "";
432         str[COL_SIZE] = to_human_readable(partinfo->size);
433         if (prefs_common.attach_desc)
434                 str[COL_NAME] = get_part_description(partinfo);
435         else
436                 str[COL_NAME] = get_part_name(partinfo);
437
438         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
439                                      NULL, NULL, NULL, NULL,
440                                      FALSE, TRUE);
441         gtk_ctree_node_set_row_data(ctree, node, partinfo);
442
443         return node;
444 }
445
446 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
447 {
448         FILE *fp;
449         const gchar *fname;
450 #if USE_GPGME
451         MimeInfo *pi;
452 #endif
453
454         if (!partinfo) return;
455
456 #if USE_GPGME
457         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
458                 ;
459         fname = pi ? pi->plaintextfile : mimeview->file;
460 #else
461         fname = mimeview->file;
462 #endif /* USE_GPGME */
463         if (!fname) return;
464
465         if ((fp = fopen(fname, "rb")) == NULL) {
466                 FILE_OP_ERROR(fname, "fopen");
467                 return;
468         }
469
470         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
471                 FILE_OP_ERROR(mimeview->file, "fseek");
472                 fclose(fp);
473                 return;
474         }
475
476         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
477         textview_show_part(mimeview->textview, partinfo, fp);
478
479         fclose(fp);
480 }
481
482 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
483 {
484         GSList *cur;
485         MimeViewerFactory *factory = NULL;
486         MimeViewer *viewer = NULL;
487         
488         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
489                 MimeViewerFactory *curfactory = cur->data;
490
491                 if(!fnmatch(curfactory->content_type, content_type, 0)) {
492                         factory = curfactory;
493                         break;
494                 }
495         }
496         if (factory == NULL)
497                 return NULL;
498
499         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
500                 MimeViewer *curviewer = cur->data;
501                 
502                 if (curviewer->factory == factory)
503                         return curviewer;
504         }
505         viewer = factory->create_viewer();
506         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
507
508         return viewer;
509 }
510
511 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
512 {
513         gchar *content_type = NULL;
514         MimeViewer *viewer = NULL;
515
516         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
517             (partinfo->name != NULL)) {
518                 content_type = procmime_get_mime_type(partinfo->name);
519         } else {
520                 content_type = g_strdup(partinfo->content_type);
521         }
522
523         if (content_type != NULL) {
524                 viewer = get_viewer_for_content_type(mimeview, content_type);
525                 g_free(content_type);
526         }
527
528         return viewer;
529 }
530
531 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
532 {
533         MimeViewer *viewer;
534         
535         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
536         if (viewer == NULL) {
537                 if (mimeview->mimeviewer != NULL)
538                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
539                 mimeview->mimeviewer = NULL;
540                 return FALSE;
541         }
542
543         if (mimeview->mimeviewer != viewer) {
544                 if (mimeview->mimeviewer != NULL)
545                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
546                 mimeview->mimeviewer = viewer;
547                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
548         }
549         viewer->show_mimepart(viewer, mimeview->file, partinfo);
550
551         return TRUE;
552 }
553
554 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
555 {
556         TextView  *textview  = mimeview->textview;
557         GList *children;
558
559         if ((mimeview->type != MIMEVIEW_VIEWER) && 
560             (mimeview->type == type)) return;
561
562         children = gtk_container_children(GTK_CONTAINER(mimeview->mime_vbox));
563         if (children) {
564                 gtkut_container_remove(GTK_CONTAINER(mimeview->mime_vbox),
565                                        GTK_WIDGET(children->data));
566                 g_list_free(children);
567         }
568
569         switch (type) {
570         case MIMEVIEW_TEXT:
571                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
572                                   GTK_WIDGET_PTR(textview));
573                 break;
574         case MIMEVIEW_VIEWER:
575                 gtk_container_add(GTK_CONTAINER(mimeview->mime_vbox),
576                                   GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer)));
577                 break;
578         default:
579                 return;
580         }
581
582         mimeview->type = type;
583 }
584
585 static void mimeview_clear(MimeView *mimeview)
586 {
587         GtkCList *clist = GTK_CLIST(mimeview->ctree);
588
589         procmime_mimeinfo_free_all(mimeview->mimeinfo);
590         mimeview->mimeinfo = NULL;
591
592         gtk_clist_clear(clist);
593         textview_clear(mimeview->textview);
594         if (mimeview->mimeviewer != NULL)
595                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
596
597         mimeview->opened = NULL;
598
599         g_free(mimeview->file);
600         mimeview->file = NULL;
601
602         /* gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0); */
603 }
604
605 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
606                               MimeView *mimeview)
607 {
608         MimeInfo *partinfo;
609
610         if (mimeview->opened == node) return;
611         mimeview->opened = node;
612         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
613
614         partinfo = gtk_ctree_node_get_row_data(ctree, node);
615         if (!partinfo) return;
616
617         /* ungrab the mouse event */
618         if (GTK_WIDGET_HAS_GRAB(ctree)) {
619                 gtk_grab_remove(GTK_WIDGET(ctree));
620                 if (gdk_pointer_is_grabbed())
621                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
622         }
623         
624         mimeview->textview->default_text = FALSE;
625         
626         if (!mimeview_show_part(mimeview, partinfo)) {
627                 switch (partinfo->mime_type) {
628                 case MIME_TEXT:
629                 case MIME_TEXT_HTML:
630                 case MIME_TEXT_ENRICHED:
631                 case MIME_MESSAGE_RFC822:
632                 case MIME_MULTIPART:
633                         mimeview_show_message_part(mimeview, partinfo);
634                 
635                         break;
636                 default:
637                         mimeview->textview->default_text = TRUE;        
638                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
639 #if USE_GPGME
640                         if (g_strcasecmp(partinfo->content_type,
641                                          "application/pgp-signature") == 0)
642                                 textview_show_signature_part(mimeview->textview,
643                                                              partinfo);
644                         else
645 #endif
646                                 textview_show_mime_part(mimeview->textview, partinfo);
647                         break;
648                 }
649         }
650 }
651
652 static void mimeview_start_drag(GtkWidget *widget, gint button,
653                                 GdkEvent *event, MimeView *mimeview)
654 {
655         GtkTargetList *list;
656         GdkDragContext *context;
657         MimeInfo *partinfo;
658         GtkCTree *ctree;
659
660         g_return_if_fail(mimeview != NULL);
661         ctree = GTK_CTREE(mimeview->ctree);
662         partinfo = gtk_ctree_node_get_row_data(ctree, mimeview->opened);
663         if (partinfo->filename == NULL && partinfo->name == NULL) return;
664
665         list = gtk_target_list_new(mimeview_mime_types, 1);
666         context = gtk_drag_begin(widget, list,
667                                  GDK_ACTION_COPY, button, event);
668         gtk_drag_set_icon_default(context);
669 }
670
671 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
672                                     MimeView *mimeview)
673 {
674         GtkCList *clist = GTK_CLIST(widget);
675         MimeInfo *partinfo;
676         gint row, column;
677
678         if (!event) return FALSE;
679
680         if (event->button == 2 || event->button == 3) {
681                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
682                                                   &row, &column))
683                         return FALSE;
684                 gtk_clist_unselect_all(clist);
685                 gtk_clist_select_row(clist, row, column);
686                 gtkut_clist_set_focus_row(clist, row);
687         }
688
689         if (event->button == 2 ||
690             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
691                 /* call external program for image, audio or html */
692                 mimeview_launch(mimeview);
693         } else if (event->button == 3) {
694                 partinfo = gtk_ctree_node_get_row_data
695                         (GTK_CTREE(mimeview->ctree), mimeview->opened);
696                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
697                                  partinfo->mime_type == MIME_TEXT_HTML ||
698                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
699                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
700                                  partinfo->mime_type == MIME_IMAGE ||
701                                  partinfo->mime_type == MIME_MULTIPART))
702                         menu_set_sensitive(mimeview->popupfactory,
703                                            "/Display as text", FALSE);
704                 else
705                         menu_set_sensitive(mimeview->popupfactory,
706                                            "/Display as text", TRUE);
707                 if (partinfo &&
708                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
709                         menu_set_sensitive(mimeview->popupfactory,
710                                            "/Open", FALSE);
711                 else
712                         menu_set_sensitive(mimeview->popupfactory,
713                                            "/Open", TRUE);
714
715 #if USE_GPGME
716                 menu_set_sensitive(mimeview->popupfactory,
717                                    "/Check signature",
718                                    mimeview_is_signed(mimeview));
719 #endif
720
721                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
722                                NULL, NULL, NULL, NULL,
723                                event->button, event->time);
724         }
725
726         return TRUE;
727 }
728
729 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
730 {
731         mimeview_key_pressed(mimeview->ctree, event, mimeview);
732 }
733
734 #define BREAK_ON_MODIFIER_KEY() \
735         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
736
737 #define KEY_PRESS_EVENT_STOP() \
738         if (gtk_signal_n_emissions_by_name \
739                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
740                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
741                                              "key_press_event"); \
742         }
743
744 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
745                                  MimeView *mimeview)
746 {
747         SummaryView *summaryview;
748         GtkCTree *ctree = GTK_CTREE(widget);
749         GtkCTreeNode *node;
750
751         if (!event) return FALSE;
752         if (!mimeview->opened) return FALSE;
753
754         switch (event->keyval) {
755         case GDK_space:
756                 if (textview_scroll_page(mimeview->textview, FALSE))
757                         return TRUE;
758
759                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
760                 if (node) {
761                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
762                         gtk_sctree_select(GTK_SCTREE(ctree), node);
763                         return TRUE;
764                 }
765                 break;
766         case GDK_BackSpace:
767                 textview_scroll_page(mimeview->textview, TRUE);
768                 return TRUE;
769         case GDK_Return:
770                 textview_scroll_one_line(mimeview->textview,
771                                          (event->state & GDK_MOD1_MASK) != 0);
772                 return TRUE;
773         case GDK_n:
774         case GDK_N:
775                 BREAK_ON_MODIFIER_KEY();
776                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
777                 KEY_PRESS_EVENT_STOP();
778
779                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
780                                         GTK_SCROLL_STEP_FORWARD, 0.0);
781                 return TRUE;
782         case GDK_p:
783         case GDK_P:
784                 BREAK_ON_MODIFIER_KEY();
785                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
786                 KEY_PRESS_EVENT_STOP();
787
788                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
789                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
790                 return TRUE;
791         case GDK_y:
792                 BREAK_ON_MODIFIER_KEY();
793                 KEY_PRESS_EVENT_STOP();
794                 mimeview_save_as(mimeview);
795                 return TRUE;
796         case GDK_t:
797                 BREAK_ON_MODIFIER_KEY();
798                 KEY_PRESS_EVENT_STOP();
799                 mimeview_display_as_text(mimeview);
800                 return TRUE;    
801         case GDK_l:
802                 BREAK_ON_MODIFIER_KEY();
803                 KEY_PRESS_EVENT_STOP();
804                 mimeview_launch(mimeview);
805                 return TRUE;
806         default:
807                 break;
808         }
809
810         if (!mimeview->messageview->mainwin) return FALSE;
811         summaryview = mimeview->messageview->mainwin->summaryview;
812         summary_pass_key_press_event(summaryview, event);
813         return TRUE;
814 }
815
816 static void mimeview_drag_data_get(GtkWidget        *widget,
817                                    GdkDragContext   *drag_context,
818                                    GtkSelectionData *selection_data,
819                                    guint             info,
820                                    guint             time,
821                                    MimeView         *mimeview)
822 {
823         gchar *filename, *uriname;
824         MimeInfo *partinfo;
825
826         if (!mimeview->opened) return;
827         if (!mimeview->file) return;
828
829         partinfo = gtk_ctree_node_get_row_data
830                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
831         if (!partinfo) return;
832         if (!partinfo->filename && !partinfo->name) return;
833
834         filename = partinfo->filename ? partinfo->filename : partinfo->name;
835         filename = g_basename(filename);
836         if (*filename == '\0') return;
837
838         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
839                                filename, NULL);
840
841         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
842                 alertpanel_error
843                         (_("Can't save the part of multipart message."));
844
845         uriname = g_strconcat("file:/", filename, NULL);
846         gtk_selection_data_set(selection_data, selection_data->target, 8,
847                                uriname, strlen(uriname));
848
849         g_free(uriname);
850         g_free(filename);
851 }
852
853 static void mimeview_save_all(MimeView *mimeview)
854 {
855         gchar *dirname;
856         gchar *defname = NULL;
857         MimeInfo *partinfo;
858         MimeInfo *attachment;
859         gchar buf[1024];
860
861         if (!mimeview->opened) return;
862         if (!mimeview->file) return;
863
864         partinfo = gtk_ctree_node_get_row_data
865                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
866         g_return_if_fail(partinfo != NULL);
867
868         dirname = filesel_select_file(_("Save as"), defname);
869         if (!dirname) return;
870
871         /* return to first children */
872         if (!partinfo->parent->children) return;  /* multipart container? */
873         attachment = partinfo->parent->children->next;
874         /* for each attachment, extract it in the selected dir. */
875         while (attachment != NULL) {
876                 static guint subst_cnt = 1;
877                 gchar *attachdir;
878                 gchar *attachname = g_strdup(get_part_name(attachment));
879                 AlertValue aval = G_ALERTDEFAULT;
880                 gchar *res;
881
882                 if (!attachname || !strlen(attachname))
883                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
884                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
885                 g_snprintf(buf, sizeof(buf), "%s%s",
886                            dirname,
887                            (attachname[0] == G_DIR_SEPARATOR)
888                            ? &attachname[1]
889                            : attachname);
890                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
891                 attachdir = g_dirname(buf);
892                 make_dir_hier(attachdir);
893                 g_free(attachdir);
894
895                 if (is_file_exist(buf)) {
896                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
897                                               attachname);
898                         aval = alertpanel(_("Overwrite"), res, _("OK"), 
899                                           _("Cancel"), NULL);
900                         g_free(res);                                      
901                 }
902                 g_free(attachname);
903
904                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
905                         alertpanel_error(_("Can't save the part of multipart message."));
906                 attachment = attachment->next;
907         }
908 }
909
910 static void mimeview_display_as_text(MimeView *mimeview)
911 {
912         MimeInfo *partinfo;
913
914         if (!mimeview->opened) return;
915
916         partinfo = gtk_ctree_node_get_row_data
917                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
918         mimeview_show_message_part(mimeview, partinfo);
919 }
920
921 static void mimeview_save_as(MimeView *mimeview)
922 {
923         gchar *filename;
924         gchar *defname = NULL;
925         MimeInfo *partinfo;
926         gchar *res;
927
928         if (!mimeview->opened) return;
929         if (!mimeview->file) return;
930
931         partinfo = gtk_ctree_node_get_row_data
932                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
933         g_return_if_fail(partinfo != NULL);
934
935         if (partinfo->filename)
936                 defname = partinfo->filename;
937         else if (partinfo->name) {
938                 Xstrdup_a(defname, partinfo->name, return);
939                 subst_for_filename(defname);
940         }
941
942         filename = filesel_select_file(_("Save as"), defname);
943         if (!filename) return;
944         if (is_file_exist(filename)) {
945                 AlertValue aval;
946                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
947                                       filename);
948                 aval = alertpanel(_("Overwrite"), res, _("OK"), 
949                                   _("Cancel"), NULL);
950                 g_free(res);                                      
951                 if (G_ALERTDEFAULT != aval) return;
952         }
953
954         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
955                 alertpanel_error
956                         (_("Can't save the part of multipart message."));
957 }
958
959 static void mimeview_launch(MimeView *mimeview)
960 {
961         MimeInfo *partinfo;
962         gchar *filename;
963
964         if (!mimeview->opened) return;
965         if (!mimeview->file) return;
966
967         partinfo = gtk_ctree_node_get_row_data
968                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
969         g_return_if_fail(partinfo != NULL);
970
971         filename = procmime_get_tmp_file_name(partinfo);
972
973         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
974                 alertpanel_error
975                         (_("Can't save the part of multipart message."));
976         else
977                 mimeview_view_file(filename, partinfo, NULL);
978
979         g_free(filename);
980 }
981
982 static void mimeview_open_with(MimeView *mimeview)
983 {
984         MimeInfo *partinfo;
985         gchar *filename;
986         gchar *cmd;
987
988         if (!mimeview->opened) return;
989         if (!mimeview->file) return;
990
991         partinfo = gtk_ctree_node_get_row_data
992                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
993         g_return_if_fail(partinfo != NULL);
994
995         filename = procmime_get_tmp_file_name(partinfo);
996
997         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
998                 alertpanel_error
999                         (_("Can't save the part of multipart message."));
1000                 g_free(filename);
1001                 return;
1002         }
1003
1004         if (!prefs_common.mime_open_cmd_history)
1005                 prefs_common.mime_open_cmd_history =
1006                         add_history(NULL, prefs_common.mime_open_cmd);
1007
1008         cmd = input_dialog_combo
1009                 (_("Open with"),
1010                  _("Enter the command line to open file:\n"
1011                    "(`%s' will be replaced with file name)"),
1012                  prefs_common.mime_open_cmd,
1013                  prefs_common.mime_open_cmd_history,
1014                  TRUE);
1015         if (cmd) {
1016                 mimeview_view_file(filename, partinfo, cmd);
1017                 g_free(prefs_common.mime_open_cmd);
1018                 prefs_common.mime_open_cmd = cmd;
1019                 prefs_common.mime_open_cmd_history =
1020                         add_history(prefs_common.mime_open_cmd_history, cmd);
1021         }
1022
1023         g_free(filename);
1024 }
1025
1026 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1027                                const gchar *cmdline)
1028 {
1029         static gchar *default_image_cmdline = "display '%s'";
1030         static gchar *default_audio_cmdline = "play '%s'";
1031         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1032         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1033         gchar buf[1024];
1034         gchar m_buf[1024];
1035         const gchar *cmd;
1036         const gchar *def_cmd;
1037         const gchar *p;
1038
1039         if (cmdline) {
1040                 cmd = cmdline;
1041                 def_cmd = NULL;
1042         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1043                 return;
1044         } else if (MIME_IMAGE == partinfo->mime_type) {
1045                 cmd = prefs_common.mime_image_viewer;
1046                 def_cmd = default_image_cmdline;
1047         } else if (MIME_AUDIO == partinfo->mime_type) {
1048                 cmd = prefs_common.mime_audio_player;
1049                 def_cmd = default_audio_cmdline;
1050         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1051                 cmd = prefs_common.uri_cmd;
1052                 def_cmd = default_html_cmdline;
1053         } else {
1054                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1055                            partinfo->content_type, "%s");
1056                 cmd = m_buf;
1057                 def_cmd = NULL;
1058         }
1059
1060         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1061             !strchr(p + 2, '%'))
1062                 g_snprintf(buf, sizeof(buf), cmd, filename);
1063         else {
1064                 if (cmd)
1065                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1066                 if (def_cmd)
1067                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1068                 else
1069                         return;
1070         }
1071
1072         execute_command_line(buf, TRUE);
1073 }
1074
1075 #if USE_GPGME
1076 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1077                              gpointer data)
1078 {
1079         MimeInfo *partinfo;
1080         gchar *part_name;
1081
1082         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1083         g_return_if_fail(partinfo != NULL);
1084
1085         part_name = get_part_name(partinfo);
1086         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1087 }
1088
1089 static void mimeview_update_names(MimeView *mimeview)
1090 {
1091         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1092
1093         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1094 }
1095
1096 static void mimeview_update_signature_info(MimeView *mimeview)
1097 {
1098         MimeInfo *partinfo;
1099
1100         if (!mimeview) return;
1101         if (!mimeview->opened) return;
1102
1103         partinfo = gtk_ctree_node_get_row_data
1104                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1105         if (!partinfo) return;
1106
1107         if (g_strcasecmp(partinfo->content_type,
1108                          "application/pgp-signature") == 0) {
1109                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1110                 textview_show_signature_part(mimeview->textview, partinfo);
1111         }
1112 }
1113
1114 void mimeview_check_signature(MimeView *mimeview)
1115 {
1116         MimeInfo *mimeinfo;
1117         FILE *fp;
1118
1119         g_return_if_fail (mimeview_is_signed(mimeview));
1120         g_return_if_fail (gpg_started);
1121
1122         mimeinfo = gtk_ctree_node_get_row_data
1123                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1124         g_return_if_fail(mimeinfo != NULL);
1125         g_return_if_fail(mimeview->file != NULL);
1126
1127         while (mimeinfo->parent)
1128                 mimeinfo = mimeinfo->parent;
1129
1130         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1131                 FILE_OP_ERROR(mimeview->file, "fopen");
1132                 return;
1133         }
1134
1135         rfc2015_check_signature(mimeinfo, fp);
1136         fclose(fp);
1137
1138         mimeview_update_names(mimeview);
1139         mimeview_update_signature_info(mimeview);
1140
1141         textview_show_message(mimeview->messageview->textview, mimeinfo,
1142                               mimeview->file);
1143 }
1144 #endif /* USE_GPGME */
1145
1146 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1147 {
1148         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1149 }
1150
1151 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1152 {
1153         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1154 }
1155
1156 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1157 {
1158         GSList *mimeview_list, *viewer_list;
1159
1160         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1161                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1162                 
1163                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1164                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1165                         mimeview->mimeviewer = NULL;
1166                 }
1167
1168                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1169                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1170
1171                         mimeviewer->destroy_viewer(mimeviewer);
1172                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1173                 }
1174         }
1175
1176         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1177 }