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