src/mimeview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 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/gtkhbox.h>
  33 #include <gtk/gtkvpaned.h>
  34 #include <gtk/gtktext.h>
  35 #include <gtk/gtksignal.h>
  36 #include <gtk/gtkmenu.h>
  37 #include <gtk/gtkdnd.h>
  38 #include <gtk/gtkselection.h>
  39 #include <gtk/gtktooltips.h>
  40 #include <gtk/gtkcontainer.h>
  41 #include <gtk/gtkbutton.h>
  42 #include <stdio.h>
  43
  44 #ifndef HAVE_APACHE_FNMATCH
  45 /* kludge: apache's fnmatch clashes with <regex.h>, don't include
  46  * fnmatch.h */
  47 #include <fnmatch.h>
  48 #endif
  49
  50 #include "intl.h"
  51 #include "main.h"
  52 #include "mimeview.h"
  53 #include "textview.h"
  54 #include "procmime.h"
  55 #include "summaryview.h"
  56 #include "menu.h"
  57 #include "filesel.h"
  58 #include "alertpanel.h"
  59 #include "inputdialog.h"
  60 #include "utils.h"
  61 #include "gtkutils.h"
  62 #include "prefs_common.h"
  63 #include "rfc2015.h"
  64 #include "stock_pixmap.h"
  65 #include "gtk/gtkvscrollbutton.h"
  66
  67
  68 typedef enum
  69 {
  70         COL_MIMETYPE = 0,
  71         COL_SIZE     = 1,
  72         COL_NAME     = 2
  73 } MimeViewColumnPos;
  74
  75 #define N_MIMEVIEW_COLS 3
  76
  77 static void mimeview_set_multipart_tree         (MimeView       *mimeview,
  78                                                  MimeInfo       *mimeinfo,
  79                                                  GtkCTreeNode   *parent);
  80 static GtkCTreeNode *mimeview_append_part       (MimeView       *mimeview,
  81                                                  MimeInfo       *partinfo,
  82                                                  GtkCTreeNode   *parent);
  83 static void mimeview_show_message_part          (MimeView       *mimeview,
  84                                                  MimeInfo       *partinfo);
  85 static void mimeview_change_view_type           (MimeView       *mimeview,
  86                                                  MimeViewType    type);
  87 static void mimeview_clear                      (MimeView       *mimeview);
  88
  89 static void mimeview_selected           (GtkCTree       *ctree,
  90                                          GtkCTreeNode   *node,
  91                                          gint            column,
  92                                          MimeView       *mimeview);
  93 static void mimeview_start_drag         (GtkWidget      *widget,
  94                                          gint            button,
  95                                          GdkEvent       *event,
  96                                          MimeView       *mimeview);
  97 static gint mimeview_button_pressed     (GtkWidget      *widget,
  98                                          GdkEventButton *event,
  99                                          MimeView       *mimeview);
 100 static gint mimeview_key_pressed        (GtkWidget      *widget,
 101                                          GdkEventKey    *event,
 102                                          MimeView       *mimeview);
 103
 104 static void mimeview_drag_data_get      (GtkWidget        *widget,
 105                                          GdkDragContext   *drag_context,
 106                                          GtkSelectionData *selection_data,
 107                                          guint             info,
 108                                          guint             time,
 109                                          MimeView         *mimeview);
 110
 111 static void mimeview_display_as_text    (MimeView       *mimeview);
 112 static void mimeview_save_as            (MimeView       *mimeview);
 113 static void mimeview_save_all           (MimeView       *mimeview);
 114 static void mimeview_launch             (MimeView       *mimeview);
 115 static void mimeview_open_with          (MimeView       *mimeview);
 116 static void mimeview_view_file          (const gchar    *filename,
 117                                          MimeInfo       *partinfo,
 118                                          const gchar    *cmdline);
 119 static gboolean icon_clicked_cb         (GtkWidget      *button,
 120                                          GdkEventButton *event,
 121                                          MimeView       *mimeview);
 122 static void icon_selected               (MimeView       *mimeview,
 123                                          gint            num,
 124                                          MimeInfo       *partinfo);
 125 static gint icon_key_pressed            (GtkWidget      *button,
 126                                          GdkEventKey    *event,
 127                                          MimeView       *mimeview);
 128 static void toggle_icon                 (GtkToggleButton *button,
 129                                          MimeView       *mimeview);
 130 static void icon_list_append_icon       (MimeView       *mimeview,
 131                                          MimeInfo       *mimeinfo);
 132 static void icon_list_create            (MimeView       *mimeview,
 133                                          MimeInfo       *mimeinfo);
 134 static void icon_list_clear             (MimeView       *mimeview);
 135 static void icon_list_toggle_by_mime_info (MimeView     *mimeview,
 136                                            MimeInfo     *mimeinfo);
 137 static void mime_toggle_button_cb       (GtkWidget      *button,
 138                                          MimeView       *mimeview);
 139 static void part_button_pressed         (MimeView       *mimeview,
 140                                          GdkEventButton *event,
 141                                          MimeInfo       *partinfo);
 142 static void icon_scroll_size_allocate_cb(GtkWidget      *widget,
 143                                          GtkAllocation  *layout_size,
 144                                          MimeView       *mimeview);
 145
 146 static GtkItemFactoryEntry mimeview_popup_entries[] =
 147 {
 148         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 149         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 150         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 151         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 152         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
 153 #if USE_GPGME
 154         ,
 155         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 156 #endif
 157 };
 158
 159 static GtkTargetEntry mimeview_mime_types[] =
 160 {
 161         {"text/uri-list", 0, 0}
 162 };
 163
 164 GSList *mimeviewer_factories;
 165 GSList *mimeviews;
 166
 167 MimeView *mimeview_create(MainWindow *mainwin)
 168 {
 169         MimeView *mimeview;
 170
 171         GtkWidget *notebook;
 172         GtkWidget *vbox;
 173         GtkWidget *paned;
 174         GtkWidget *scrolledwin;
 175         GtkWidget *ctree;
 176         GtkWidget *mime_notebook;
 177         GtkWidget *popupmenu;
 178         GtkWidget *ctree_mainbox;
 179         GtkWidget *mime_toggle;
 180         GtkWidget *icon_mainbox;
 181         GtkWidget *icon_scroll;
 182         GtkWidget *icon_vbox;
 183         GtkWidget *arrow;
 184         GtkWidget *scrollbutton;
 185         GtkWidget *hbox;
 186         GtkTooltips *tooltips;
 187         GtkItemFactory *popupfactory;
 188         gchar *titles[N_MIMEVIEW_COLS];
 189         gint n_entries;
 190         gint i;
 191
 192         debug_print("Creating MIME view...\n");
 193         mimeview = g_new0(MimeView, 1);
 194
 195         titles[COL_MIMETYPE] = _("MIME Type");
 196         titles[COL_SIZE]     = _("Size");
 197         titles[COL_NAME]     = _("Name");
 198
 199         notebook = gtk_notebook_new();
 200         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 201         gtk_notebook_set_show_tabs(GTK_NOTEBOOK(notebook), FALSE);
 202         gtk_notebook_set_show_border(GTK_NOTEBOOK(notebook), FALSE);
 203
 204         vbox = gtk_vbox_new(FALSE, 0);
 205         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 206
 207         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 208         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 209                                        GTK_POLICY_AUTOMATIC,
 210                                        GTK_POLICY_ALWAYS);
 211
 212         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 213         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 214         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 215         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 216                                            GTK_JUSTIFY_RIGHT);
 217         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 218         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 90);
 219         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 220                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 221                                        GTK_CAN_FOCUS);
 222         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 223
 224         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 225                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 226         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 227                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 228         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 229                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 230         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 231                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 232         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 233                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 234
 235         mime_notebook = gtk_notebook_new();
 236         gtk_widget_show(mime_notebook);
 237         GTK_WIDGET_UNSET_FLAGS(mime_notebook, GTK_CAN_FOCUS);
 238         gtk_notebook_set_show_tabs(GTK_NOTEBOOK(mime_notebook), FALSE);
 239         gtk_notebook_set_show_border(GTK_NOTEBOOK(mime_notebook), FALSE);
 240
 241         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 242
 243         icon_vbox = gtk_vbox_new(FALSE,0);
 244         icon_scroll = gtk_layout_new(NULL, NULL);
 245         gtk_layout_put(GTK_LAYOUT(icon_scroll), icon_vbox, 0, 0);
 246         scrollbutton = gtk_vscrollbutton_new(gtk_layout_get_vadjustment(GTK_LAYOUT(icon_scroll)));
 247
 248         mime_toggle = gtk_toggle_button_new();
 249         arrow = gtk_arrow_new(GTK_ARROW_LEFT, GTK_SHADOW_NONE);
 250         gtk_widget_show(arrow);
 251         gtk_container_add(GTK_CONTAINER(mime_toggle), arrow);
 252         gtk_signal_connect(GTK_OBJECT(mime_toggle), "toggled",
 253                            GTK_SIGNAL_FUNC(mime_toggle_button_cb), mimeview);
 254
 255         icon_mainbox = gtk_vbox_new(FALSE, 0);
 256         gtk_box_pack_start(GTK_BOX(icon_mainbox), mime_toggle, FALSE, FALSE, 0);
 257         gtk_box_pack_start(GTK_BOX(icon_mainbox), icon_scroll, TRUE, TRUE, 3);
 258         gtk_box_pack_end(GTK_BOX(icon_mainbox), scrollbutton, FALSE, FALSE, 0);
 259         gtk_signal_connect(GTK_OBJECT(icon_mainbox), "size_allocate",
 260                         GTK_SIGNAL_FUNC(icon_scroll_size_allocate_cb), mimeview);
 261
 262         ctree_mainbox = gtk_hbox_new(FALSE, 0);
 263         gtk_box_pack_start(GTK_BOX(ctree_mainbox), scrolledwin, TRUE, TRUE, 0);
 264
 265         n_entries = sizeof(mimeview_popup_entries) /
 266                 sizeof(mimeview_popup_entries[0]);
 267         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 268                                       "<MimeView>", &popupfactory, mimeview);
 269         tooltips = gtk_tooltips_new();
 270         gtk_tooltips_set_delay(tooltips, 0);
 271
 272         paned = gtk_vpaned_new();
 273         gtk_paned_set_gutter_size(GTK_PANED(paned), 6);
 274         gtk_paned_pack1(GTK_PANED(paned), ctree_mainbox, FALSE, TRUE);
 275         gtk_paned_pack2(GTK_PANED(paned), mime_notebook, TRUE, TRUE);
 276         gtk_container_add(GTK_CONTAINER(notebook), paned);
 277
 278         hbox = gtk_hbox_new(FALSE, 0);
 279         gtk_box_pack_start(GTK_BOX(hbox), notebook, TRUE, TRUE, 0);
 280         gtk_box_pack_start(GTK_BOX(hbox), icon_mainbox, FALSE, FALSE, 0);
 281
 282         gtk_widget_show_all(hbox);
 283         gtk_widget_hide(ctree_mainbox);
 284
 285         mimeview->notebook      = notebook;
 286         mimeview->vbox          = vbox;
 287         mimeview->hbox          = hbox;
 288         mimeview->paned         = paned;
 289         mimeview->scrolledwin   = scrolledwin;
 290         mimeview->ctree         = ctree;
 291         mimeview->mime_notebook = mime_notebook;
 292         mimeview->popupmenu     = popupmenu;
 293         mimeview->popupfactory  = popupfactory;
 294         mimeview->type          = -1;
 295         mimeview->ctree_mainbox = ctree_mainbox;
 296         mimeview->icon_scroll   = icon_scroll;
 297         mimeview->icon_vbox     = icon_vbox;
 298         mimeview->icon_mainbox  = icon_mainbox;
 299         mimeview->icon_count    = 0;
 300         mimeview->mainwin       = mainwin;
 301         mimeview->tooltips      = tooltips;
 302         mimeview->oldsize       = 60;
 303         mimeview->mime_toggle   = mime_toggle;
 304         mimeview->scroll_button = scrollbutton;
 305
 306         mimeview->target_list   = gtk_target_list_new(mimeview_mime_types, 1);
 307
 308         mimeviews = g_slist_prepend(mimeviews, mimeview);
 309
 310         return mimeview;
 311 }
 312
 313 void mimeview_init(MimeView *mimeview)
 314 {
 315         textview_init(mimeview->textview);
 316
 317         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 318                 GTK_WIDGET_PTR(mimeview->textview));
 319 }
 320
 321 /*
 322  * Check whether the message is OpenPGP signed
 323  */
 324 #if USE_GPGME
 325 static gboolean mimeview_is_signed(MimeView *mimeview)
 326 {
 327         MimeInfo *partinfo = NULL;
 328
 329         debug_print("mimeview_is signed of %p\n", mimeview);
 330
 331         if (!mimeview) return FALSE;
 332         if (!mimeview->opened) return FALSE;
 333
 334         debug_print("mimeview_is_signed: open\n" );
 335
 336         if (!mimeview->file) return FALSE;
 337
 338         debug_print("mimeview_is_signed: file\n" );
 339
 340         partinfo = gtk_ctree_node_get_row_data
 341                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 342         g_return_val_if_fail(partinfo != NULL, FALSE);
 343
 344         /* walk the tree and see whether there is a signature somewhere */
 345         do {
 346                 if (rfc2015_has_signature(partinfo))
 347                         return TRUE;
 348         } while ((partinfo = partinfo->parent) != NULL);
 349
 350         debug_print("mimeview_is_signed: FALSE\n" );
 351
 352         return FALSE;
 353 }
 354
 355 static void set_unchecked_signature(MimeInfo *mimeinfo)
 356 {
 357         MimeInfo *sig_partinfo;
 358
 359         sig_partinfo = rfc2015_find_signature(mimeinfo);
 360         if (sig_partinfo == NULL) return;
 361
 362         g_free(sig_partinfo->sigstatus);
 363         sig_partinfo->sigstatus =
 364                 g_strdup(_("Right-click here to verify the signature"));
 365
 366         g_free(sig_partinfo->sigstatus_full);
 367         sig_partinfo->sigstatus_full = NULL;
 368 }
 369 #endif /* USE_GPGME */
 370
 371 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 372                            const gchar *file)
 373 {
 374         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 375         GtkCTreeNode *node;
 376         FILE *fp;
 377
 378         mimeview_clear(mimeview);
 379         textview_clear(mimeview->messageview->textview);
 380
 381         g_return_if_fail(file != NULL);
 382         g_return_if_fail(mimeinfo != NULL);
 383
 384         mimeview->mimeinfo = mimeinfo;
 385
 386         mimeview->file = g_strdup(file);
 387
 388 #if USE_GPGME
 389         if (prefs_common.auto_check_signatures && gpg_started) {
 390                 if ((fp = fopen(file, "rb")) == NULL) {
 391                         FILE_OP_ERROR(file, "fopen");
 392                         return;
 393                 }
 394                 rfc2015_check_signature(mimeinfo, fp);
 395                 fclose(fp);
 396         } else
 397                 set_unchecked_signature(mimeinfo);
 398 #endif
 399
 400         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 401                                          mimeview);
 402
 403         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 404         icon_list_create(mimeview, mimeinfo);
 405
 406         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 407                                            mimeview_selected, mimeview);
 408
 409         /* search first text part */
 410         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 411              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 412                 MimeInfo *partinfo;
 413
 414                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 415                 if (partinfo &&
 416                     (partinfo->mime_type == MIME_TEXT ||
 417                      partinfo->mime_type == MIME_TEXT_HTML))
 418                         break;
 419         }
 420         textview_show_message(mimeview->messageview->textview, mimeinfo, file);
 421
 422         if (!node)
 423                 node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 424
 425         if (node) {
 426                 gtk_ctree_select(ctree, node);
 427                 icon_list_toggle_by_mime_info
 428                         (mimeview, gtk_ctree_node_get_row_data(ctree, node));
 429                 gtkut_ctree_set_focus_row(ctree, node);
 430                 gtk_widget_grab_focus(mimeview->ctree);
 431         }
 432 }
 433
 434 void mimeview_destroy(MimeView *mimeview)
 435 {
 436         GSList *cur;
 437
 438         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 439                 MimeViewer *viewer = (MimeViewer *) cur->data;
 440                 gtk_container_remove(GTK_CONTAINER(mimeview->mime_notebook),
 441                         GTK_WIDGET(viewer->get_widget(viewer)));
 442                 viewer->destroy_viewer(viewer);
 443         }
 444         g_slist_free(mimeview->viewers);
 445         gtk_target_list_unref(mimeview->target_list);
 446
 447         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 448         g_free(mimeview->file);
 449         g_free(mimeview);
 450
 451         mimeviews = g_slist_remove(mimeviews, mimeview);
 452
 453 }
 454
 455 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 456 {
 457         if (gtk_notebook_get_current_page
 458                 (GTK_NOTEBOOK(mimeview->notebook)) == 0)
 459                 return NULL;
 460
 461         return gtk_ctree_node_get_row_data
 462                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 463 }
 464
 465 static void mimeview_set_multipart_tree(MimeView *mimeview,
 466                                         MimeInfo *mimeinfo,
 467                                         GtkCTreeNode *parent)
 468 {
 469         GtkCTreeNode *node;
 470
 471         g_return_if_fail(mimeinfo != NULL);
 472
 473         if (mimeinfo->children)
 474                 mimeinfo = mimeinfo->children;
 475
 476         while (mimeinfo != NULL) {
 477                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 478
 479                 if (mimeinfo->children)
 480                         mimeview_set_multipart_tree(mimeview, mimeinfo, node);
 481                 else if (mimeinfo->sub &&
 482                          mimeinfo->sub->mime_type != MIME_TEXT &&
 483                          mimeinfo->sub->mime_type != MIME_TEXT_HTML)
 484                         mimeview_set_multipart_tree(mimeview, mimeinfo->sub,
 485                                                     node);
 486                 mimeinfo = mimeinfo->next;
 487         }
 488 }
 489
 490 static gchar *get_part_name(MimeInfo *partinfo)
 491 {
 492 #if USE_GPGME
 493         if (partinfo->sigstatus)
 494                 return partinfo->sigstatus;
 495         else
 496 #endif
 497         if (partinfo->name)
 498                 return partinfo->name;
 499         else if (partinfo->filename)
 500                 return partinfo->filename;
 501         else if (partinfo->description)
 502                 return partinfo->description;
 503         else
 504                 return "";
 505 }
 506
 507 static gchar *get_part_description(MimeInfo *partinfo)
 508 {
 509         if (partinfo->description)
 510                 return partinfo->description;
 511         else if (partinfo->name)
 512                 return partinfo->name;
 513         else if (partinfo->filename)
 514                 return partinfo->filename;
 515         else
 516                 return "";
 517 }
 518
 519 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 520                                           MimeInfo *partinfo,
 521                                           GtkCTreeNode *parent)
 522 {
 523         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 524         GtkCTreeNode *node;
 525         gchar *str[N_MIMEVIEW_COLS];
 526
 527         str[COL_MIMETYPE] =
 528                 partinfo->content_type ? partinfo->content_type : "";
 529         str[COL_SIZE] = to_human_readable(partinfo->size);
 530         if (prefs_common.attach_desc)
 531                 str[COL_NAME] = get_part_description(partinfo);
 532         else
 533                 str[COL_NAME] = get_part_name(partinfo);
 534
 535         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 536                                      NULL, NULL, NULL, NULL,
 537                                      FALSE, TRUE);
 538         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 539
 540         return node;
 541 }
 542
 543 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 544 {
 545         FILE *fp;
 546         const gchar *fname;
 547 #if USE_GPGME
 548         MimeInfo *pi;
 549 #endif
 550
 551         if (!partinfo) return;
 552
 553 #if USE_GPGME
 554         for (pi = partinfo; pi && !pi->plaintextfile ; pi = pi->parent)
 555                 ;
 556         fname = pi ? pi->plaintextfile : mimeview->file;
 557 #else
 558         fname = mimeview->file;
 559 #endif /* USE_GPGME */
 560         if (!fname) return;
 561
 562         if ((fp = fopen(fname, "rb")) == NULL) {
 563                 FILE_OP_ERROR(fname, "fopen");
 564                 return;
 565         }
 566
 567         if (fseek(fp, partinfo->fpos, SEEK_SET) < 0) {
 568                 FILE_OP_ERROR(mimeview->file, "fseek");
 569                 fclose(fp);
 570                 return;
 571         }
 572
 573         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 574         textview_show_part(mimeview->textview, partinfo, fp);
 575
 576         fclose(fp);
 577 }
 578
 579 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 580 {
 581         GSList *cur;
 582         MimeViewerFactory *factory = NULL;
 583         MimeViewer *viewer = NULL;
 584
 585 /*
 586  * FNM_CASEFOLD is a GNU extension
 587  * if its not defined copy the string to the stack and
 588  * convert the copy to lower case
 589  */
 590 #ifndef FNM_CASEFOLD
 591 #define FNM_CASEFOLD 0
 592         Xstrdup_a(content_type, content_type, return NULL);
 593         g_strdown((gchar *)content_type);
 594 #endif
 595
 596         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 597                 MimeViewerFactory *curfactory = cur->data;
 598                 gint i = 0;
 599
 600                 while (curfactory->content_types[i] != NULL) {
 601                         debug_print("%s\n", curfactory->content_types[i]);
 602                         if(!fnmatch(curfactory->content_types[i], content_type, FNM_CASEFOLD)) {
 603                                 factory = curfactory;
 604                                 break;
 605                         }
 606                         i++;
 607                 }
 608                 if (factory != NULL)
 609                         break;
 610         }
 611         if (factory == NULL)
 612                 return NULL;
 613
 614         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 615                 MimeViewer *curviewer = cur->data;
 616
 617                 if (curviewer->factory == factory)
 618                         return curviewer;
 619         }
 620         viewer = factory->create_viewer();
 621         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 622                 GTK_WIDGET(viewer->get_widget(viewer)));
 623
 624         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 625
 626         return viewer;
 627 }
 628
 629 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 630 {
 631         gchar *content_type = NULL;
 632         MimeViewer *viewer = NULL;
 633
 634         if ((partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM) &&
 635             (partinfo->name != NULL)) {
 636                 content_type = procmime_get_mime_type(partinfo->name);
 637         } else {
 638                 content_type = g_strdup(partinfo->content_type);
 639         }
 640
 641         if (content_type != NULL) {
 642                 viewer = get_viewer_for_content_type(mimeview, content_type);
 643                 g_free(content_type);
 644         }
 645
 646         return viewer;
 647 }
 648
 649 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 650 {
 651         MimeViewer *viewer;
 652
 653         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 654         if (viewer == NULL) {
 655                 if (mimeview->mimeviewer != NULL)
 656                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 657                 mimeview->mimeviewer = NULL;
 658                 return FALSE;
 659         }
 660
 661         if (mimeview->mimeviewer != viewer) {
 662                 if (mimeview->mimeviewer != NULL)
 663                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 664                 mimeview->mimeviewer = viewer;
 665                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 666         }
 667         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 668
 669         return TRUE;
 670 }
 671
 672 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 673 {
 674         TextView  *textview  = mimeview->textview;
 675
 676         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 677             (mimeview->type == type)) return;
 678
 679         switch (type) {
 680         case MIMEVIEW_TEXT:
 681                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 682                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 683                         GTK_WIDGET_PTR(textview)));
 684                 break;
 685         case MIMEVIEW_VIEWER:
 686                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 687                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 688                         GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer))));
 689                 break;
 690         default:
 691                 return;
 692         }
 693
 694         mimeview->type = type;
 695 }
 696
 697 static void mimeview_clear(MimeView *mimeview)
 698 {
 699         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 700
 701         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 702         mimeview->mimeinfo = NULL;
 703
 704         gtk_clist_clear(clist);
 705         textview_clear(mimeview->textview);
 706         if (mimeview->mimeviewer != NULL)
 707                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 708
 709         mimeview->opened = NULL;
 710
 711         g_free(mimeview->file);
 712         mimeview->file = NULL;
 713
 714         gtk_vscrollbutton_reset(GTK_VSCROLLBUTTON(mimeview->scroll_button));
 715         icon_list_clear(mimeview);
 716
 717         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(mimeview->mime_toggle)))
 718                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0);
 719 }
 720
 721 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 722                               MimeView *mimeview)
 723 {
 724         MimeInfo *partinfo;
 725
 726         if (mimeview->opened == node) return;
 727         mimeview->opened = node;
 728         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 729
 730         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 731         if (!partinfo) return;
 732
 733         /* ungrab the mouse event */
 734         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 735                 gtk_grab_remove(GTK_WIDGET(ctree));
 736                 if (gdk_pointer_is_grabbed())
 737                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 738         }
 739
 740         mimeview->textview->default_text = FALSE;
 741
 742         if (!mimeview_show_part(mimeview, partinfo)) {
 743                 switch (partinfo->mime_type) {
 744                 case MIME_TEXT:
 745                 case MIME_TEXT_HTML:
 746                 case MIME_TEXT_ENRICHED:
 747                 case MIME_MESSAGE_RFC822:
 748                 case MIME_MULTIPART:
 749                         mimeview_show_message_part(mimeview, partinfo);
 750
 751                         break;
 752                 default:
 753                         mimeview->textview->default_text = TRUE;
 754                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 755 #if USE_GPGME
 756                         if (g_strcasecmp(partinfo->content_type,
 757                                          "application/pgp-signature") == 0)
 758                                 textview_show_signature_part(mimeview->textview,
 759                                                              partinfo);
 760                         else
 761 #endif
 762                                 textview_show_mime_part(mimeview->textview, partinfo);
 763                         break;
 764                 }
 765         }
 766 }
 767
 768 static void mimeview_start_drag(GtkWidget *widget, gint button,
 769                                 GdkEvent *event, MimeView *mimeview)
 770 {
 771         GdkDragContext *context;
 772         MimeInfo *partinfo;
 773
 774         g_return_if_fail(mimeview != NULL);
 775
 776         partinfo = mimeview_get_selected_part(mimeview);
 777         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 778
 779         context = gtk_drag_begin(widget, mimeview->target_list,
 780                                  GDK_ACTION_COPY, button, event);
 781         gtk_drag_set_icon_default(context);
 782 }
 783
 784 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 785                                     MimeView *mimeview)
 786 {
 787         GtkCList *clist = GTK_CLIST(widget);
 788         gint row, column;
 789
 790         if (!event) return FALSE;
 791
 792         if (event->button == 2 || event->button == 3) {
 793                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 794                                                   &row, &column))
 795                         return FALSE;
 796                 gtk_clist_unselect_all(clist);
 797                 gtk_clist_select_row(clist, row, column);
 798                 gtkut_clist_set_focus_row(clist, row);
 799         }
 800         part_button_pressed(mimeview, event, mimeview_get_selected_part(mimeview));
 801
 802         return TRUE;
 803 }
 804
 805 static void part_button_pressed(MimeView *mimeview, GdkEventButton *event,
 806                                 MimeInfo *partinfo)
 807 {
 808         if (event->button == 2 ||
 809             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 810                 /* call external program for image, audio or html */
 811                 mimeview_launch(mimeview);
 812         } else if (event->button == 3) {
 813                 if (partinfo && (partinfo->mime_type == MIME_TEXT ||
 814                                  partinfo->mime_type == MIME_TEXT_HTML ||
 815                                  partinfo->mime_type == MIME_TEXT_ENRICHED ||
 816                                  partinfo->mime_type == MIME_MESSAGE_RFC822 ||
 817                                  partinfo->mime_type == MIME_IMAGE ||
 818                                  partinfo->mime_type == MIME_MULTIPART))
 819                         menu_set_sensitive(mimeview->popupfactory,
 820                                            "/Display as text", FALSE);
 821                 else
 822                         menu_set_sensitive(mimeview->popupfactory,
 823                                            "/Display as text", TRUE);
 824                 if (partinfo &&
 825                     partinfo->mime_type == MIME_APPLICATION_OCTET_STREAM)
 826                         menu_set_sensitive(mimeview->popupfactory,
 827                                            "/Open", FALSE);
 828                 else
 829                         menu_set_sensitive(mimeview->popupfactory,
 830                                            "/Open", TRUE);
 831
 832 #if USE_GPGME
 833                 menu_set_sensitive(mimeview->popupfactory,
 834                                    "/Check signature",
 835                                    mimeview_is_signed(mimeview));
 836 #endif
 837
 838                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 839                                NULL, NULL, NULL, NULL,
 840                                event->button, event->time);
 841         }
 842
 843 }
 844
 845
 846 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 847 {
 848         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 849 }
 850
 851 #define BREAK_ON_MODIFIER_KEY() \
 852         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 853
 854 #define KEY_PRESS_EVENT_STOP() \
 855         if (gtk_signal_n_emissions_by_name \
 856                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 857                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 858                                              "key_press_event"); \
 859         }
 860
 861 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 862                                  MimeView *mimeview)
 863 {
 864         SummaryView *summaryview;
 865         GtkCTree *ctree = GTK_CTREE(widget);
 866         GtkCTreeNode *node;
 867
 868         if (!event) return FALSE;
 869         if (!mimeview->opened) return FALSE;
 870
 871         switch (event->keyval) {
 872         case GDK_space:
 873                 if (textview_scroll_page(mimeview->textview, FALSE))
 874                         return TRUE;
 875
 876                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 877                 if (node) {
 878                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 879                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 880                         return TRUE;
 881                 }
 882                 break;
 883         case GDK_BackSpace:
 884                 textview_scroll_page(mimeview->textview, TRUE);
 885                 return TRUE;
 886         case GDK_Return:
 887                 textview_scroll_one_line(mimeview->textview,
 888                                          (event->state & GDK_MOD1_MASK) != 0);
 889                 return TRUE;
 890         case GDK_n:
 891         case GDK_N:
 892                 BREAK_ON_MODIFIER_KEY();
 893                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 894                 KEY_PRESS_EVENT_STOP();
 895
 896                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 897                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 898                 return TRUE;
 899         case GDK_p:
 900         case GDK_P:
 901                 BREAK_ON_MODIFIER_KEY();
 902                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 903                 KEY_PRESS_EVENT_STOP();
 904
 905                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 906                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 907                 return TRUE;
 908         case GDK_y:
 909                 BREAK_ON_MODIFIER_KEY();
 910                 KEY_PRESS_EVENT_STOP();
 911                 mimeview_save_as(mimeview);
 912                 return TRUE;
 913         case GDK_t:
 914                 BREAK_ON_MODIFIER_KEY();
 915                 KEY_PRESS_EVENT_STOP();
 916                 mimeview_display_as_text(mimeview);
 917                 return TRUE;
 918         case GDK_l:
 919                 BREAK_ON_MODIFIER_KEY();
 920                 KEY_PRESS_EVENT_STOP();
 921                 mimeview_launch(mimeview);
 922                 return TRUE;
 923         default:
 924                 break;
 925         }
 926
 927         if (!mimeview->messageview->mainwin) return FALSE;
 928         summaryview = mimeview->messageview->mainwin->summaryview;
 929         summary_pass_key_press_event(summaryview, event);
 930         return TRUE;
 931 }
 932
 933 static void mimeview_drag_data_get(GtkWidget        *widget,
 934                                    GdkDragContext   *drag_context,
 935                                    GtkSelectionData *selection_data,
 936                                    guint             info,
 937                                    guint             time,
 938                                    MimeView         *mimeview)
 939 {
 940         gchar *filename, *uriname;
 941         MimeInfo *partinfo;
 942
 943         if (!mimeview->opened) return;
 944         if (!mimeview->file) return;
 945
 946         partinfo = mimeview_get_selected_part(mimeview);
 947         if (!partinfo) return;
 948         if (!partinfo->filename && !partinfo->name) return;
 949
 950         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 951         filename = g_basename(filename);
 952         if (*filename == '\0') return;
 953
 954         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 955                                filename, NULL);
 956
 957         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
 958                 alertpanel_error
 959                         (_("Can't save the part of multipart message."));
 960
 961         uriname = g_strconcat("file:/", filename, NULL);
 962         gtk_selection_data_set(selection_data, selection_data->target, 8,
 963                                uriname, strlen(uriname));
 964
 965         g_free(uriname);
 966         g_free(filename);
 967 }
 968
 969 static void mimeview_save_all(MimeView *mimeview)
 970 {
 971         gchar *dirname;
 972         gchar *defname = NULL;
 973         MimeInfo *partinfo;
 974         MimeInfo *attachment;
 975         gchar buf[1024];
 976
 977         if (!mimeview->opened) return;
 978         if (!mimeview->file) return;
 979
 980         partinfo = mimeview_get_selected_part(mimeview);
 981         g_return_if_fail(partinfo != NULL);
 982
 983         dirname = filesel_select_file(_("Save as"), defname);
 984         if (!dirname) return;
 985
 986         /* return to first children */
 987         if (!partinfo->parent->children) return;  /* multipart container? */
 988         attachment = partinfo->parent->children->next;
 989         /* for each attachment, extract it in the selected dir. */
 990         while (attachment != NULL) {
 991                 static guint subst_cnt = 1;
 992                 gchar *attachdir;
 993                 gchar *attachname = g_strdup(get_part_name(attachment));
 994                 AlertValue aval = G_ALERTDEFAULT;
 995                 gchar *res;
 996
 997                 if (!attachname || !strlen(attachname))
 998                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 999                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
1000                 g_snprintf(buf, sizeof(buf), "%s%s",
1001                            dirname,
1002                            (attachname[0] == G_DIR_SEPARATOR)
1003                            ? &attachname[1]
1004                            : attachname);
1005                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
1006                 attachdir = g_dirname(buf);
1007                 make_dir_hier(attachdir);
1008                 g_free(attachdir);
1009
1010                 if (is_file_exist(buf)) {
1011                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
1012                                               attachname);
1013                         aval = alertpanel(_("Overwrite"), res, _("OK"),
1014                                           _("Cancel"), NULL);
1015                         g_free(res);
1016                 }
1017                 g_free(attachname);
1018
1019                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, mimeview->file, attachment) < 0))
1020                         alertpanel_error(_("Can't save the part of multipart message."));
1021                 attachment = attachment->next;
1022         }
1023 }
1024
1025 static void mimeview_display_as_text(MimeView *mimeview)
1026 {
1027         MimeInfo *partinfo;
1028
1029         if (!mimeview->opened) return;
1030
1031         partinfo = mimeview_get_selected_part(mimeview);
1032         g_return_if_fail(partinfo != NULL);
1033         mimeview_show_message_part(mimeview, partinfo);
1034 }
1035
1036 static void mimeview_save_as(MimeView *mimeview)
1037 {
1038         gchar *filename;
1039         gchar *defname = NULL;
1040         MimeInfo *partinfo;
1041         gchar *res;
1042
1043         if (!mimeview->opened) return;
1044         if (!mimeview->file) return;
1045
1046         partinfo = mimeview_get_selected_part(mimeview);
1047         g_return_if_fail(partinfo != NULL);
1048
1049         if (partinfo->filename)
1050                 defname = partinfo->filename;
1051         else if (partinfo->name) {
1052                 Xstrdup_a(defname, partinfo->name, return);
1053                 subst_for_filename(defname);
1054         }
1055
1056         filename = filesel_select_file(_("Save as"), defname);
1057         if (!filename) return;
1058         if (is_file_exist(filename)) {
1059                 AlertValue aval;
1060                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
1061                                       filename);
1062                 aval = alertpanel(_("Overwrite"), res, _("OK"),
1063                                   _("Cancel"), NULL);
1064                 g_free(res);
1065                 if (G_ALERTDEFAULT != aval) return;
1066         }
1067
1068         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
1069                 alertpanel_error
1070                         (_("Can't save the part of multipart message."));
1071 }
1072
1073 static void mimeview_launch(MimeView *mimeview)
1074 {
1075         MimeInfo *partinfo;
1076         gchar *filename;
1077
1078         if (!mimeview->opened) return;
1079         if (!mimeview->file) return;
1080
1081         partinfo = mimeview_get_selected_part(mimeview);
1082         g_return_if_fail(partinfo != NULL);
1083
1084         filename = procmime_get_tmp_file_name(partinfo);
1085
1086         if (procmime_get_part(filename, mimeview->file, partinfo) < 0)
1087                 alertpanel_error
1088                         (_("Can't save the part of multipart message."));
1089         else
1090                 mimeview_view_file(filename, partinfo, NULL);
1091
1092         g_free(filename);
1093 }
1094
1095 static void mimeview_open_with(MimeView *mimeview)
1096 {
1097         MimeInfo *partinfo;
1098         gchar *filename;
1099         gchar *cmd;
1100
1101         if (!mimeview->opened) return;
1102         if (!mimeview->file) return;
1103
1104         partinfo = mimeview_get_selected_part(mimeview);
1105         g_return_if_fail(partinfo != NULL);
1106
1107         filename = procmime_get_tmp_file_name(partinfo);
1108
1109         if (procmime_get_part(filename, mimeview->file, partinfo) < 0) {
1110                 alertpanel_error
1111                         (_("Can't save the part of multipart message."));
1112                 g_free(filename);
1113                 return;
1114         }
1115
1116         if (!prefs_common.mime_open_cmd_history)
1117                 prefs_common.mime_open_cmd_history =
1118                         add_history(NULL, prefs_common.mime_open_cmd);
1119
1120         cmd = input_dialog_combo
1121                 (_("Open with"),
1122                  _("Enter the command line to open file:\n"
1123                    "(`%s' will be replaced with file name)"),
1124                  prefs_common.mime_open_cmd,
1125                  prefs_common.mime_open_cmd_history,
1126                  TRUE);
1127         if (cmd) {
1128                 mimeview_view_file(filename, partinfo, cmd);
1129                 g_free(prefs_common.mime_open_cmd);
1130                 prefs_common.mime_open_cmd = cmd;
1131                 prefs_common.mime_open_cmd_history =
1132                         add_history(prefs_common.mime_open_cmd_history, cmd);
1133         }
1134
1135         g_free(filename);
1136 }
1137
1138 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1139                                const gchar *cmdline)
1140 {
1141         static gchar *default_image_cmdline = "display '%s'";
1142         static gchar *default_audio_cmdline = "play '%s'";
1143         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1144         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1145         gchar buf[1024];
1146         gchar m_buf[1024];
1147         const gchar *cmd;
1148         const gchar *def_cmd;
1149         const gchar *p;
1150
1151         if (cmdline) {
1152                 cmd = cmdline;
1153                 def_cmd = NULL;
1154         } else if (MIME_APPLICATION_OCTET_STREAM == partinfo->mime_type) {
1155                 return;
1156         } else if (MIME_IMAGE == partinfo->mime_type) {
1157                 cmd = prefs_common.mime_image_viewer;
1158                 def_cmd = default_image_cmdline;
1159         } else if (MIME_AUDIO == partinfo->mime_type) {
1160                 cmd = prefs_common.mime_audio_player;
1161                 def_cmd = default_audio_cmdline;
1162         } else if (MIME_TEXT_HTML == partinfo->mime_type) {
1163                 cmd = prefs_common.uri_cmd;
1164                 def_cmd = default_html_cmdline;
1165         } else {
1166                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1167                            partinfo->content_type, "%s");
1168                 cmd = m_buf;
1169                 def_cmd = NULL;
1170         }
1171
1172         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1173             !strchr(p + 2, '%'))
1174                 g_snprintf(buf, sizeof(buf), cmd, filename);
1175         else {
1176                 if (cmd)
1177                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1178                 if (def_cmd)
1179                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1180                 else
1181                         return;
1182         }
1183
1184         execute_command_line(buf, TRUE);
1185 }
1186
1187 #if USE_GPGME
1188 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1189                              gpointer data)
1190 {
1191         MimeInfo *partinfo;
1192         gchar *part_name;
1193
1194         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1195         g_return_if_fail(partinfo != NULL);
1196
1197         part_name = get_part_name(partinfo);
1198         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1199 }
1200
1201 static void mimeview_update_names(MimeView *mimeview)
1202 {
1203         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1204
1205         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1206 }
1207
1208 static void mimeview_update_signature_info(MimeView *mimeview)
1209 {
1210         MimeInfo *partinfo;
1211
1212         if (!mimeview) return;
1213         if (!mimeview->opened) return;
1214
1215         partinfo = mimeview_get_selected_part(mimeview);
1216         if (!partinfo) return;
1217
1218         if (g_strcasecmp(partinfo->content_type,
1219                          "application/pgp-signature") == 0) {
1220                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1221                 textview_show_signature_part(mimeview->textview, partinfo);
1222         }
1223 }
1224
1225 void mimeview_check_signature(MimeView *mimeview)
1226 {
1227         MimeInfo *mimeinfo;
1228         FILE *fp;
1229
1230         g_return_if_fail (mimeview_is_signed(mimeview));
1231         g_return_if_fail (gpg_started);
1232
1233         mimeinfo = gtk_ctree_node_get_row_data
1234                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1235         g_return_if_fail(mimeinfo != NULL);
1236         g_return_if_fail(mimeview->file != NULL);
1237
1238         while (mimeinfo->parent)
1239                 mimeinfo = mimeinfo->parent;
1240
1241         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1242                 FILE_OP_ERROR(mimeview->file, "fopen");
1243                 return;
1244         }
1245
1246         rfc2015_check_signature(mimeinfo, fp);
1247         fclose(fp);
1248
1249         mimeview_update_names(mimeview);
1250         mimeview_update_signature_info(mimeview);
1251
1252         textview_show_message(mimeview->messageview->textview, mimeinfo,
1253                               mimeview->file);
1254
1255         mimeview_update(mimeview);
1256 }
1257 #endif /* USE_GPGME */
1258
1259 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1260 {
1261         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1262 }
1263
1264 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1265 {
1266         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1267 }
1268
1269 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1270 {
1271         GSList *mimeview_list, *viewer_list;
1272
1273         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1274                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1275
1276                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1277                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1278                         mimeview->mimeviewer = NULL;
1279                 }
1280
1281                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1282                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1283
1284                         mimeviewer->destroy_viewer(mimeviewer);
1285                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1286                 }
1287         }
1288
1289         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1290 }
1291
1292 static gboolean icon_clicked_cb (GtkWidget *button, GdkEventButton *event, MimeView *mimeview)
1293 {
1294         gint      num;
1295         MimeInfo *partinfo;
1296
1297         num      = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(button), "icon_number"));
1298         partinfo = gtk_object_get_data(GTK_OBJECT(button), "partinfo");
1299         if (event->button == 1) {
1300                 icon_selected(mimeview, num, partinfo);
1301
1302                 if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button)))
1303                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1304                 else
1305                         gtk_signal_emit_stop_by_name(GTK_OBJECT(button), "button_press_event");
1306         }
1307
1308         part_button_pressed(mimeview, event, partinfo);
1309
1310         return TRUE;
1311 }
1312
1313 static void icon_selected (MimeView *mimeview, gint num, MimeInfo *partinfo)
1314 {
1315         if (num == 1 && (partinfo->mime_type == MIME_TEXT ||
1316                          partinfo->mime_type == MIME_TEXT_HTML))  {
1317                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0);
1318                 /* don't set the ctree, as it will unload the plugin, and
1319                  * we want to be able to switch quickly between the text
1320                  * part and the attachment */
1321         } else {
1322                 GtkCTreeNode *node;
1323                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 1);
1324                 node = gtk_ctree_find_by_row_data(GTK_CTREE(mimeview->ctree), NULL, partinfo);
1325                 if (node)
1326                         gtk_ctree_select(GTK_CTREE(mimeview->ctree), node);
1327         }
1328 }
1329
1330 static gint icon_key_pressed(GtkWidget *button, GdkEventKey *event,
1331                              MimeView *mimeview)
1332 {
1333         gint      num;
1334         MimeInfo *partinfo;
1335
1336         num      = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(button), "icon_number"));
1337         partinfo = gtk_object_get_data(GTK_OBJECT(button), "partinfo");
1338
1339         if (!event) return FALSE;
1340
1341         switch (event->keyval) {
1342         case GDK_Return:
1343                 icon_selected(mimeview, num, partinfo);
1344                 return TRUE;
1345                 break;
1346         default:
1347                 break;
1348         }
1349         return FALSE;
1350 }
1351
1352 static void toggle_icon(GtkToggleButton *button, MimeView *mimeview)
1353 {
1354         GList *child;
1355
1356         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1357         for (; child != NULL; child = g_list_next(child)) {
1358                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1359                     GTK_TOGGLE_BUTTON(child->data) != button &&
1360                     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(child->data)))
1361                         gtk_toggle_button_set_active
1362                                 (GTK_TOGGLE_BUTTON(child->data),
1363                                  FALSE);
1364         }
1365 }
1366
1367 static void icon_list_append_icon (MimeView *mimeview, MimeInfo *mimeinfo)
1368 {
1369         GtkWidget *pixmap;
1370         GtkWidget *vbox;
1371         GtkWidget *button;
1372         GtkWidget *sep;
1373         gchar *tip;
1374         gchar *desc = NULL;
1375         StockPixmap stockp;
1376
1377         vbox = mimeview->icon_vbox;
1378         mimeview->icon_count++;
1379         if (mimeview->icon_count > 1) {
1380                 sep = gtk_hseparator_new();
1381                 gtk_widget_show(sep);
1382                 gtk_box_pack_start(GTK_BOX(vbox), sep, TRUE, TRUE, 3);
1383         }
1384         button = gtk_toggle_button_new();
1385         gtk_button_set_relief(GTK_BUTTON(button), GTK_RELIEF_NONE);
1386         gtk_object_set_data(GTK_OBJECT(button), "icon_number",
1387                 GINT_TO_POINTER(mimeview->icon_count));
1388         gtk_object_set_data(GTK_OBJECT(button), "partinfo",
1389                 mimeinfo);
1390
1391         switch (mimeinfo->mime_type) {
1392
1393         case MIME_TEXT:
1394         case MIME_MESSAGE_RFC822:
1395                 stockp = STOCK_PIXMAP_MIME_TEXT_PLAIN;
1396                 break;
1397         case MIME_TEXT_HTML:
1398                 stockp = STOCK_PIXMAP_MIME_TEXT_HTML;
1399                 break;
1400         case MIME_APPLICATION:
1401 #ifdef USE_GPGME
1402                 if (mimeinfo->content_type
1403                         &&  g_strcasecmp(mimeinfo->content_type,
1404                                          "application/pgp-signature")  == 0) {
1405                         if (mimeinfo->sigstatus_full) {
1406                                 desc = mimeinfo->sigstatus;
1407                                 if (mimeinfo->sig_ok)
1408                                         stockp = STOCK_PIXMAP_MIME_GPG_PASSED;
1409                                 else if (mimeinfo->sig_unknown)
1410                                         stockp = STOCK_PIXMAP_MIME_GPG_UNKNOWN;
1411                                 else if (mimeinfo->sig_expired
1412                                          || mimeinfo->key_expired)
1413                                         stockp = STOCK_PIXMAP_MIME_GPG_EXPIRED;
1414                                 else
1415                                         stockp = STOCK_PIXMAP_MIME_GPG_FAILED;
1416                         } else
1417                                 stockp = STOCK_PIXMAP_MIME_GPG_SIGNED;
1418                 } else
1419 #endif
1420                         stockp = STOCK_PIXMAP_MIME_APPLICATION;
1421                 break;
1422         case MIME_APPLICATION_OCTET_STREAM:
1423                 stockp = STOCK_PIXMAP_MIME_APPLICATION_OCTET_STREAM;
1424                 break;
1425         case MIME_IMAGE:
1426                 stockp = STOCK_PIXMAP_MIME_IMAGE;
1427                 break;
1428         case MIME_AUDIO:
1429                 stockp = STOCK_PIXMAP_MIME_AUDIO;
1430                 break;
1431         case MIME_TEXT_ENRICHED:
1432                 stockp = STOCK_PIXMAP_MIME_TEXT_ENRICHED;
1433                 break;
1434         default:
1435                 stockp = STOCK_PIXMAP_MIME_UNKNOWN;
1436                 break;
1437         }
1438
1439         pixmap = stock_pixmap_widget(mimeview->mainwin->window, stockp);
1440         gtk_container_add(GTK_CONTAINER(button), pixmap);
1441
1442         if (!desc) {
1443                 if (prefs_common.attach_desc)
1444                         desc = get_part_description(mimeinfo);
1445                 else
1446                         desc = get_part_name(mimeinfo);
1447         }
1448         if (desc && *desc)
1449                 tip = g_strdup_printf("%s\n%s\n%s", desc, mimeinfo->content_type,
1450                                 to_human_readable(mimeinfo->size));
1451         else
1452                 tip = g_strdup_printf("%s\n%s", mimeinfo->content_type,
1453                                 to_human_readable(mimeinfo->size));
1454
1455         gtk_tooltips_set_tip(mimeview->tooltips, button, tip, NULL);
1456         g_free(tip);
1457         gtk_widget_show_all(button);
1458         gtk_signal_connect(GTK_OBJECT(button), "button_press_event",
1459                            GTK_SIGNAL_FUNC(icon_clicked_cb), mimeview);
1460         gtk_signal_connect(GTK_OBJECT(button), "key_press_event",
1461                            GTK_SIGNAL_FUNC(icon_key_pressed), mimeview);
1462         gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
1463
1464 }
1465
1466 static void icon_list_clear (MimeView *mimeview)
1467 {
1468         GList     *child;
1469         GtkAdjustment *adj;
1470
1471         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1472         for (; child != NULL; child = g_list_next(child)) {
1473                 gtkut_container_remove(GTK_CONTAINER(mimeview->icon_vbox),
1474                                        GTK_WIDGET(child->data));
1475         }
1476         mimeview->icon_count = 0;
1477         adj  = gtk_layout_get_vadjustment(GTK_LAYOUT(mimeview->icon_scroll));
1478         adj->value = 0;
1479 }
1480
1481 static void icon_list_toggle_by_mime_info(MimeView      *mimeview,
1482                                           MimeInfo      *mimeinfo)
1483 {
1484         GList *child;
1485
1486         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1487         for (; child != NULL; child = g_list_next(child)) {
1488                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1489                     gtk_object_get_data(GTK_OBJECT(child->data),
1490                                         "partinfo") == (gpointer)mimeinfo) {
1491                         gtk_toggle_button_set_active
1492                                 (GTK_TOGGLE_BUTTON(child->data), TRUE);
1493                 }
1494         }
1495 }
1496
1497 static void icon_scroll_size_allocate_cb(GtkWidget *widget,
1498                                         GtkAllocation *size, MimeView *mimeview)
1499 {
1500         GtkAllocation *mainbox_size;
1501         GtkAllocation *vbox_size;
1502         GtkAllocation *layout_size;
1503         GtkAdjustment *adj;
1504
1505         adj = gtk_layout_get_vadjustment(GTK_LAYOUT(mimeview->icon_scroll));
1506
1507         mainbox_size = &mimeview->icon_mainbox->allocation;
1508         vbox_size = &mimeview->icon_vbox->allocation;
1509         layout_size = &mimeview->icon_scroll->allocation;
1510
1511         /* centralise the vbox */
1512         gtk_layout_move(GTK_LAYOUT(mimeview->icon_scroll), mimeview->icon_vbox,
1513                         (mainbox_size->width - vbox_size->width)/2, 0);
1514
1515         gtk_layout_set_size(GTK_LAYOUT(mimeview->icon_scroll),
1516                             GTK_LAYOUT(mimeview->icon_scroll)->width,
1517                             MAX(vbox_size->height, layout_size->height));
1518         adj->step_increment = 5;
1519 }
1520
1521 static void icon_list_create(MimeView *mimeview, MimeInfo *mimeinfo)
1522 {
1523         GtkRequisition size;
1524         gint           width;
1525         g_return_if_fail(mimeinfo != NULL);
1526
1527         if (mimeinfo->children)
1528                 mimeinfo = mimeinfo->children;
1529
1530         while (mimeinfo != NULL) {
1531                 if (mimeinfo->children)
1532                         icon_list_create(mimeview, mimeinfo);
1533                 else if (mimeinfo->sub &&
1534                          mimeinfo->sub->mime_type != MIME_TEXT &&
1535                          mimeinfo->sub->mime_type != MIME_TEXT_HTML)
1536                         icon_list_create(mimeview, mimeinfo->sub);
1537                 else
1538                         icon_list_append_icon(mimeview, mimeinfo);
1539                 mimeinfo = mimeinfo->next;
1540         }
1541         gtk_widget_size_request(mimeview->icon_vbox, &size);
1542         width = size.width + 4;
1543         if (width > mimeview->icon_mainbox->requisition.width) {
1544                 gtk_widget_set_usize(mimeview->icon_mainbox,
1545                                      width, -1);
1546         }
1547
1548 }
1549
1550 static void mime_toggle_button_cb (GtkWidget *button, MimeView *mimeview)
1551 {
1552         gtk_widget_ref(button);
1553
1554         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1555                 gtk_arrow_set(GTK_ARROW(GTK_BIN(button)->child), GTK_ARROW_RIGHT,
1556                                         GTK_SHADOW_NONE);
1557                 gtk_widget_hide(mimeview->icon_mainbox);
1558                 gtk_widget_show(mimeview->ctree_mainbox);
1559                 gtk_paned_set_position(GTK_PANED(mimeview->paned), mimeview->oldsize);
1560
1561                 gtkut_container_remove(GTK_CONTAINER(mimeview->icon_mainbox),
1562                                         button);
1563                 gtk_box_pack_end(GTK_BOX(mimeview->ctree_mainbox),
1564                                    button, FALSE, FALSE, 0);
1565                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 1);
1566         } else {
1567                 gtk_arrow_set(GTK_ARROW(GTK_BIN(button)->child), GTK_ARROW_LEFT,
1568                               GTK_SHADOW_NONE);
1569                 mimeview->oldsize = mimeview->ctree_mainbox->allocation.height;
1570                 gtk_widget_hide(mimeview->ctree_mainbox);
1571                 gtk_widget_show(mimeview->icon_mainbox);
1572                 gtk_paned_set_position(GTK_PANED(mimeview->paned), 0);
1573
1574                 gtkut_container_remove(GTK_CONTAINER(mimeview->ctree_mainbox),
1575                                         button);
1576                 gtk_box_pack_start(GTK_BOX(mimeview->icon_mainbox),
1577                                    button, FALSE, FALSE, 0);
1578                 gtk_box_reorder_child(GTK_BOX(button->parent), button, 0);
1579                 if (mimeview->opened)
1580                         icon_list_toggle_by_mime_info
1581                                 (mimeview, gtk_ctree_node_get_row_data(GTK_CTREE(mimeview->ctree),
1582                                                                        mimeview->opened));
1583
1584         }
1585         gtk_widget_grab_focus(button);
1586         gtk_widget_unref(button);
1587
1588 }
1589
1590 void mimeview_update (MimeView *mimeview) {
1591         if (mimeview && mimeview->mimeinfo) {
1592                 icon_list_clear(mimeview);
1593                 icon_list_create(mimeview, mimeview->mimeinfo);
1594         }
1595 }