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 gboolean icon_list_select_by_number(MimeView     *mimeview,
 138                                            gint          number);
 139 static void mime_toggle_button_cb       (GtkWidget      *button,
 140                                          MimeView       *mimeview);
 141 static void part_button_pressed         (MimeView       *mimeview,
 142                                          GdkEventButton *event,
 143                                          MimeInfo       *partinfo);
 144 static void icon_scroll_size_allocate_cb(GtkWidget      *widget,
 145                                          GtkAllocation  *layout_size,
 146                                          MimeView       *mimeview);
 147
 148 static GtkItemFactoryEntry mimeview_popup_entries[] =
 149 {
 150         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 151         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 152         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 153         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 154         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL}
 155 #if USE_GPGME
 156         ,
 157         {N_("/_Check signature"), NULL, mimeview_check_signature, 0, NULL}
 158 #endif
 159 };
 160
 161 static GtkTargetEntry mimeview_mime_types[] =
 162 {
 163         {"text/uri-list", 0, 0}
 164 };
 165
 166 GSList *mimeviewer_factories;
 167 GSList *mimeviews;
 168
 169 MimeView *mimeview_create(MainWindow *mainwin)
 170 {
 171         MimeView *mimeview;
 172
 173         GtkWidget *notebook;
 174         GtkWidget *vbox;
 175         GtkWidget *paned;
 176         GtkWidget *scrolledwin;
 177         GtkWidget *ctree;
 178         GtkWidget *mime_notebook;
 179         GtkWidget *popupmenu;
 180         GtkWidget *ctree_mainbox;
 181         GtkWidget *mime_toggle;
 182         GtkWidget *icon_mainbox;
 183         GtkWidget *icon_scroll;
 184         GtkWidget *icon_vbox;
 185         GtkWidget *arrow;
 186         GtkWidget *scrollbutton;
 187         GtkWidget *hbox;
 188         GtkTooltips *tooltips;
 189         GtkItemFactory *popupfactory;
 190         gchar *titles[N_MIMEVIEW_COLS];
 191         gint n_entries;
 192         gint i;
 193
 194         debug_print("Creating MIME view...\n");
 195         mimeview = g_new0(MimeView, 1);
 196
 197         titles[COL_MIMETYPE] = _("MIME Type");
 198         titles[COL_SIZE]     = _("Size");
 199         titles[COL_NAME]     = _("Name");
 200
 201         notebook = gtk_notebook_new();
 202         gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE);
 203         gtk_notebook_set_show_tabs(GTK_NOTEBOOK(notebook), FALSE);
 204         gtk_notebook_set_show_border(GTK_NOTEBOOK(notebook), FALSE);
 205
 206         vbox = gtk_vbox_new(FALSE, 0);
 207         gtk_container_add(GTK_CONTAINER(notebook), vbox);
 208
 209         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 210         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 211                                        GTK_POLICY_AUTOMATIC,
 212                                        GTK_POLICY_ALWAYS);
 213
 214         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 215         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 216         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 217         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 218                                            GTK_JUSTIFY_RIGHT);
 219         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 220         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 90);
 221         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 222                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 223                                        GTK_CAN_FOCUS);
 224         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 225
 226         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 227                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 228         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 229                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 230         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 231                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 232         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 233                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 234         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 235                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 236
 237         mime_notebook = gtk_notebook_new();
 238         gtk_widget_show(mime_notebook);
 239         GTK_WIDGET_UNSET_FLAGS(mime_notebook, GTK_CAN_FOCUS);
 240         gtk_notebook_set_show_tabs(GTK_NOTEBOOK(mime_notebook), FALSE);
 241         gtk_notebook_set_show_border(GTK_NOTEBOOK(mime_notebook), FALSE);
 242
 243         gtk_notebook_set_page(GTK_NOTEBOOK(notebook), 0);
 244
 245         icon_vbox = gtk_vbox_new(FALSE, 2);
 246         icon_scroll = gtk_layout_new(NULL, NULL);
 247         gtk_layout_put(GTK_LAYOUT(icon_scroll), icon_vbox, 0, 0);
 248         scrollbutton = gtk_vscrollbutton_new(gtk_layout_get_vadjustment(GTK_LAYOUT(icon_scroll)));
 249
 250         mime_toggle = gtk_toggle_button_new();
 251         arrow = gtk_arrow_new(GTK_ARROW_LEFT, GTK_SHADOW_NONE);
 252         gtk_widget_show(arrow);
 253         gtk_container_add(GTK_CONTAINER(mime_toggle), arrow);
 254         gtk_signal_connect(GTK_OBJECT(mime_toggle), "toggled",
 255                            GTK_SIGNAL_FUNC(mime_toggle_button_cb), mimeview);
 256
 257         icon_mainbox = gtk_vbox_new(FALSE, 0);
 258         gtk_box_pack_start(GTK_BOX(icon_mainbox), mime_toggle, FALSE, FALSE, 0);
 259         gtk_box_pack_start(GTK_BOX(icon_mainbox), icon_scroll, TRUE, TRUE, 3);
 260         gtk_box_pack_end(GTK_BOX(icon_mainbox), scrollbutton, FALSE, FALSE, 0);
 261         gtk_signal_connect(GTK_OBJECT(icon_mainbox), "size_allocate",
 262                         GTK_SIGNAL_FUNC(icon_scroll_size_allocate_cb), mimeview);
 263
 264         ctree_mainbox = gtk_hbox_new(FALSE, 0);
 265         gtk_box_pack_start(GTK_BOX(ctree_mainbox), scrolledwin, TRUE, TRUE, 0);
 266
 267         n_entries = sizeof(mimeview_popup_entries) /
 268                 sizeof(mimeview_popup_entries[0]);
 269         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 270                                       "<MimeView>", &popupfactory, mimeview);
 271         tooltips = gtk_tooltips_new();
 272         gtk_tooltips_set_delay(tooltips, 0);
 273
 274         paned = gtk_vpaned_new();
 275         gtk_paned_set_gutter_size(GTK_PANED(paned), 6);
 276         gtk_paned_pack1(GTK_PANED(paned), ctree_mainbox, FALSE, TRUE);
 277         gtk_paned_pack2(GTK_PANED(paned), mime_notebook, TRUE, TRUE);
 278         gtk_container_add(GTK_CONTAINER(notebook), paned);
 279
 280         hbox = gtk_hbox_new(FALSE, 0);
 281         gtk_box_pack_start(GTK_BOX(hbox), notebook, TRUE, TRUE, 0);
 282         gtk_box_pack_start(GTK_BOX(hbox), icon_mainbox, FALSE, FALSE, 0);
 283
 284         gtk_widget_show_all(hbox);
 285         gtk_widget_hide(ctree_mainbox);
 286
 287         mimeview->notebook      = notebook;
 288         mimeview->vbox          = vbox;
 289         mimeview->hbox          = hbox;
 290         mimeview->paned         = paned;
 291         mimeview->scrolledwin   = scrolledwin;
 292         mimeview->ctree         = ctree;
 293         mimeview->mime_notebook = mime_notebook;
 294         mimeview->popupmenu     = popupmenu;
 295         mimeview->popupfactory  = popupfactory;
 296         mimeview->type          = -1;
 297         mimeview->ctree_mainbox = ctree_mainbox;
 298         mimeview->icon_scroll   = icon_scroll;
 299         mimeview->icon_vbox     = icon_vbox;
 300         mimeview->icon_mainbox  = icon_mainbox;
 301         mimeview->icon_count    = 0;
 302         mimeview->mainwin       = mainwin;
 303         mimeview->tooltips      = tooltips;
 304         mimeview->oldsize       = 60;
 305         mimeview->mime_toggle   = mime_toggle;
 306
 307         mimeview->target_list   = gtk_target_list_new(mimeview_mime_types, 1);
 308
 309         mimeviews = g_slist_prepend(mimeviews, mimeview);
 310
 311         return mimeview;
 312 }
 313
 314 void mimeview_init(MimeView *mimeview)
 315 {
 316         textview_init(mimeview->textview);
 317
 318         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 319                 GTK_WIDGET_PTR(mimeview->textview));
 320 }
 321
 322 /*
 323  * Check whether the message is OpenPGP signed
 324  */
 325 #if USE_GPGME
 326 static gboolean mimeview_is_signed(MimeView *mimeview)
 327 {
 328         MimeInfo *partinfo = NULL;
 329
 330         debug_print("mimeview_is signed of %p\n", mimeview);
 331
 332         if (!mimeview) return FALSE;
 333         if (!mimeview->opened) return FALSE;
 334
 335         debug_print("mimeview_is_signed: open\n" );
 336
 337         if (!mimeview->file) return FALSE;
 338
 339         debug_print("mimeview_is_signed: file\n" );
 340
 341         partinfo = gtk_ctree_node_get_row_data
 342                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 343         g_return_val_if_fail(partinfo != NULL, FALSE);
 344
 345         /* walk the tree and see whether there is a signature somewhere */
 346         do {
 347                 if (rfc2015_has_signature(partinfo))
 348                         return TRUE;
 349         } while ((partinfo = partinfo->parent) != NULL);
 350
 351         debug_print("mimeview_is_signed: FALSE\n" );
 352
 353         return FALSE;
 354 }
 355
 356 static void set_unchecked_signature(MimeInfo *mimeinfo)
 357 {
 358         MimeInfo *sig_partinfo;
 359
 360         sig_partinfo = rfc2015_find_signature(mimeinfo);
 361         if (sig_partinfo == NULL) return;
 362
 363         g_free(sig_partinfo->sigstatus);
 364         sig_partinfo->sigstatus =
 365                 g_strdup(_("Right-click here to verify the signature"));
 366
 367         g_free(sig_partinfo->sigstatus_full);
 368         sig_partinfo->sigstatus_full = NULL;
 369 }
 370 #endif /* USE_GPGME */
 371
 372 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 373                            const gchar *file)
 374 {
 375         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 376         GtkCTreeNode *node;
 377         FILE *fp;
 378
 379         mimeview_clear(mimeview);
 380         textview_clear(mimeview->messageview->textview);
 381
 382         g_return_if_fail(file != NULL);
 383         g_return_if_fail(mimeinfo != NULL);
 384
 385         mimeview->mimeinfo = mimeinfo;
 386
 387         mimeview->file = g_strdup(file);
 388
 389 #if USE_GPGME
 390         if (prefs_common.auto_check_signatures && gpg_started) {
 391                 if ((fp = fopen(file, "rb")) == NULL) {
 392                         FILE_OP_ERROR(file, "fopen");
 393                         return;
 394                 }
 395                 rfc2015_check_signature(mimeinfo, fp);
 396                 fclose(fp);
 397         } else
 398                 set_unchecked_signature(mimeinfo);
 399 #endif
 400
 401         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 402                                          mimeview);
 403
 404         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 405         icon_list_create(mimeview, mimeinfo);
 406
 407         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 408                                            mimeview_selected, mimeview);
 409
 410         /* search first text part */
 411         for (node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 412              node != NULL; node = GTK_CTREE_NODE_NEXT(node)) {
 413                 MimeInfo *partinfo;
 414
 415                 partinfo = gtk_ctree_node_get_row_data(ctree, node);
 416                 if (partinfo &&
 417                     (partinfo->type == MIMETYPE_TEXT))
 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                 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(mimeview->mime_toggle)))
 431                         gtk_widget_grab_focus(mimeview->ctree);
 432         }
 433 }
 434
 435 void mimeview_destroy(MimeView *mimeview)
 436 {
 437         GSList *cur;
 438
 439         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 440                 MimeViewer *viewer = (MimeViewer *) cur->data;
 441                 gtk_container_remove(GTK_CONTAINER(mimeview->mime_notebook),
 442                         GTK_WIDGET(viewer->get_widget(viewer)));
 443                 viewer->destroy_viewer(viewer);
 444         }
 445         g_slist_free(mimeview->viewers);
 446         gtk_target_list_unref(mimeview->target_list);
 447
 448         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 449         g_free(mimeview->file);
 450         g_free(mimeview);
 451
 452         mimeviews = g_slist_remove(mimeviews, mimeview);
 453
 454 }
 455
 456 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 457 {
 458         if (gtk_notebook_get_current_page
 459                 (GTK_NOTEBOOK(mimeview->notebook)) == 0)
 460                 return NULL;
 461
 462         return gtk_ctree_node_get_row_data
 463                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 464 }
 465
 466 static void mimeview_set_multipart_tree(MimeView *mimeview,
 467                                         MimeInfo *mimeinfo,
 468                                         GtkCTreeNode *parent)
 469 {
 470         GtkCTreeNode *node;
 471
 472         g_return_if_fail(mimeinfo != NULL);
 473
 474         while (mimeinfo != NULL) {
 475                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 476
 477                 if (mimeinfo->children)
 478                         mimeview_set_multipart_tree(mimeview, mimeinfo->children, node);
 479                 mimeinfo = mimeinfo->next;
 480         }
 481 }
 482
 483 static gchar *get_part_name(MimeInfo *partinfo)
 484 {
 485         gchar *name;
 486
 487         name = g_hash_table_lookup(partinfo->parameters, "name");
 488         if(name == NULL)
 489                 name = "";
 490
 491         return name;
 492 }
 493
 494 static gchar *get_part_description(MimeInfo *partinfo)
 495 {
 496         if (partinfo->description)
 497                 return partinfo->description;
 498         else if (g_hash_table_lookup(partinfo->parameters, "name") != NULL)
 499                 return g_hash_table_lookup(partinfo->parameters, "name");
 500         else
 501                 return "";
 502 }
 503
 504 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 505                                           MimeInfo *partinfo,
 506                                           GtkCTreeNode *parent)
 507 {
 508         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 509         GtkCTreeNode *node;
 510         static gchar content_type[64];
 511         gchar *str[N_MIMEVIEW_COLS];
 512
 513         if (partinfo->type != MIMETYPE_UNKNOWN && partinfo->subtype) {
 514                 snprintf(content_type, 64, "%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
 515         } else {
 516                 snprintf(content_type, 64, "UNKNOWN");
 517         }
 518
 519         str[COL_MIMETYPE] = content_type;
 520         str[COL_SIZE] = to_human_readable(partinfo->length);
 521         if (prefs_common.attach_desc)
 522                 str[COL_NAME] = get_part_description(partinfo);
 523         else
 524                 str[COL_NAME] = get_part_name(partinfo);
 525
 526         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 527                                      NULL, NULL, NULL, NULL,
 528                                      FALSE, TRUE);
 529         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 530
 531         return node;
 532 }
 533
 534 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 535 {
 536         FILE *fp;
 537         const gchar *fname;
 538
 539         if (!partinfo) return;
 540
 541         fname = mimeview->file;
 542         if (!fname) return;
 543
 544         if ((fp = fopen(fname, "rb")) == NULL) {
 545                 FILE_OP_ERROR(fname, "fopen");
 546                 return;
 547         }
 548
 549         if (fseek(fp, partinfo->offset, SEEK_SET) < 0) {
 550                 FILE_OP_ERROR(mimeview->file, "fseek");
 551                 fclose(fp);
 552                 return;
 553         }
 554
 555         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 556         textview_show_part(mimeview->textview, partinfo, fp);
 557
 558         fclose(fp);
 559 }
 560
 561 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 562 {
 563         GSList *cur;
 564         MimeViewerFactory *factory = NULL;
 565         MimeViewer *viewer = NULL;
 566
 567 /*
 568  * FNM_CASEFOLD is a GNU extension
 569  * if its not defined copy the string to the stack and
 570  * convert the copy to lower case
 571  */
 572 #ifndef FNM_CASEFOLD
 573 #define FNM_CASEFOLD 0
 574         Xstrdup_a(content_type, content_type, return NULL);
 575         g_strdown((gchar *)content_type);
 576 #endif
 577
 578         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 579                 MimeViewerFactory *curfactory = cur->data;
 580                 gint i = 0;
 581
 582                 while (curfactory->content_types[i] != NULL) {
 583                         debug_print("%s\n", curfactory->content_types[i]);
 584                         if(!fnmatch(curfactory->content_types[i], content_type, FNM_CASEFOLD)) {
 585                                 factory = curfactory;
 586                                 break;
 587                         }
 588                         i++;
 589                 }
 590                 if (factory != NULL)
 591                         break;
 592         }
 593         if (factory == NULL)
 594                 return NULL;
 595
 596         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 597                 MimeViewer *curviewer = cur->data;
 598
 599                 if (curviewer->factory == factory)
 600                         return curviewer;
 601         }
 602         viewer = factory->create_viewer();
 603         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 604                 GTK_WIDGET(viewer->get_widget(viewer)));
 605
 606         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 607
 608         return viewer;
 609 }
 610
 611 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 612 {
 613         gchar *content_type = NULL;
 614         MimeViewer *viewer = NULL;
 615
 616         if ((partinfo->type == MIMETYPE_APPLICATION) &&
 617             (g_strcasecmp(partinfo->subtype, "octet-stream")) &&
 618             (partinfo->name != NULL)) {
 619                 content_type = procmime_get_mime_type(partinfo->name);
 620         } else {
 621                 content_type = g_strdup_printf("%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
 622         }
 623
 624         if (content_type != NULL) {
 625                 viewer = get_viewer_for_content_type(mimeview, content_type);
 626                 g_free(content_type);
 627         }
 628
 629         return viewer;
 630 }
 631
 632 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 633 {
 634         MimeViewer *viewer;
 635
 636         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 637         if (viewer == NULL) {
 638                 if (mimeview->mimeviewer != NULL)
 639                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 640                 mimeview->mimeviewer = NULL;
 641                 return FALSE;
 642         }
 643
 644         if (mimeview->mimeviewer != viewer) {
 645                 if (mimeview->mimeviewer != NULL)
 646                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 647                 mimeview->mimeviewer = viewer;
 648                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 649         }
 650         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 651
 652         return TRUE;
 653 }
 654
 655 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 656 {
 657         TextView  *textview  = mimeview->textview;
 658
 659         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 660             (mimeview->type == type)) return;
 661
 662         switch (type) {
 663         case MIMEVIEW_TEXT:
 664                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 665                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 666                         GTK_WIDGET_PTR(textview)));
 667                 break;
 668         case MIMEVIEW_VIEWER:
 669                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 670                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 671                         GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer))));
 672                 break;
 673         default:
 674                 return;
 675         }
 676
 677         mimeview->type = type;
 678 }
 679
 680 static void mimeview_clear(MimeView *mimeview)
 681 {
 682         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 683
 684         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 685         mimeview->mimeinfo = NULL;
 686
 687         gtk_clist_clear(clist);
 688         textview_clear(mimeview->textview);
 689         if (mimeview->mimeviewer != NULL)
 690                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 691
 692         mimeview->opened = NULL;
 693
 694         g_free(mimeview->file);
 695         mimeview->file = NULL;
 696
 697         icon_list_clear(mimeview);
 698
 699         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(mimeview->mime_toggle)))
 700                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0);
 701 }
 702
 703 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 704                               MimeView *mimeview)
 705 {
 706         MimeInfo *partinfo;
 707
 708         if (mimeview->opened == node) return;
 709         mimeview->opened = node;
 710         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 711
 712         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 713         if (!partinfo) return;
 714
 715         /* ungrab the mouse event */
 716         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 717                 gtk_grab_remove(GTK_WIDGET(ctree));
 718                 if (gdk_pointer_is_grabbed())
 719                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 720         }
 721
 722         mimeview->textview->default_text = FALSE;
 723
 724         if (!mimeview_show_part(mimeview, partinfo)) {
 725                 switch (partinfo->type) {
 726                 case MIMETYPE_TEXT:
 727                 case MIMETYPE_MESSAGE:
 728                 case MIMETYPE_MULTIPART:
 729                         mimeview_show_message_part(mimeview, partinfo);
 730
 731                         break;
 732                 default:
 733                         mimeview->textview->default_text = TRUE;
 734                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 735 #if USE_GPGME
 736                         if ((partinfo->type == MIMETYPE_APPLICATION) &&
 737                             !g_strcasecmp(partinfo->subtype, "pgp-signature"))
 738                                 textview_show_signature_part(mimeview->textview,
 739                                                              partinfo);
 740                         else
 741 #endif
 742                                 textview_show_mime_part(mimeview->textview, partinfo);
 743                         break;
 744                 }
 745         }
 746 }
 747
 748 static void mimeview_start_drag(GtkWidget *widget, gint button,
 749                                 GdkEvent *event, MimeView *mimeview)
 750 {
 751         GdkDragContext *context;
 752         MimeInfo *partinfo;
 753
 754         g_return_if_fail(mimeview != NULL);
 755
 756         partinfo = mimeview_get_selected_part(mimeview);
 757         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 758
 759         context = gtk_drag_begin(widget, mimeview->target_list,
 760                                  GDK_ACTION_COPY, button, event);
 761         gtk_drag_set_icon_default(context);
 762 }
 763
 764 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 765                                     MimeView *mimeview)
 766 {
 767         GtkCList *clist = GTK_CLIST(widget);
 768         gint row, column;
 769
 770         if (!event) return FALSE;
 771
 772         if (event->button == 2 || event->button == 3) {
 773                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 774                                                   &row, &column))
 775                         return FALSE;
 776                 gtk_clist_unselect_all(clist);
 777                 gtk_clist_select_row(clist, row, column);
 778                 gtkut_clist_set_focus_row(clist, row);
 779         }
 780         part_button_pressed(mimeview, event, mimeview_get_selected_part(mimeview));
 781
 782         return TRUE;
 783 }
 784
 785 static void part_button_pressed(MimeView *mimeview, GdkEventButton *event,
 786                                 MimeInfo *partinfo)
 787 {
 788         if (event->button == 2 ||
 789             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 790                 /* call external program for image, audio or html */
 791                 mimeview_launch(mimeview);
 792         } else if (event->button == 3) {
 793                 if (partinfo && (partinfo->type == MIMETYPE_TEXT ||
 794                                  partinfo->type == MIMETYPE_MESSAGE ||
 795                                  partinfo->type == MIMETYPE_IMAGE ||
 796                                  partinfo->type == MIMETYPE_MULTIPART))
 797                         menu_set_sensitive(mimeview->popupfactory,
 798                                            "/Display as text", FALSE);
 799                 else
 800                         menu_set_sensitive(mimeview->popupfactory,
 801                                            "/Display as text", TRUE);
 802                 if (partinfo &&
 803                     partinfo->type == MIMETYPE_APPLICATION)
 804                         menu_set_sensitive(mimeview->popupfactory,
 805                                            "/Open", FALSE);
 806                 else
 807                         menu_set_sensitive(mimeview->popupfactory,
 808                                            "/Open", TRUE);
 809
 810 #if USE_GPGME
 811                 menu_set_sensitive(mimeview->popupfactory,
 812                                    "/Check signature",
 813                                    mimeview_is_signed(mimeview));
 814 #endif
 815                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
 816                                     "pop_partinfo", partinfo);
 817
 818                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 819                                NULL, NULL, NULL, NULL,
 820                                event->button, event->time);
 821         }
 822 }
 823
 824
 825 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 826 {
 827         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 828 }
 829
 830 #define BREAK_ON_MODIFIER_KEY() \
 831         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 832
 833 #define KEY_PRESS_EVENT_STOP() \
 834         if (gtk_signal_n_emissions_by_name \
 835                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 836                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 837                                              "key_press_event"); \
 838         }
 839
 840 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 841                                  MimeView *mimeview)
 842 {
 843         SummaryView *summaryview;
 844         GtkCTree *ctree = GTK_CTREE(widget);
 845         GtkCTreeNode *node;
 846
 847         if (!event) return FALSE;
 848         if (!mimeview->opened) return FALSE;
 849
 850         switch (event->keyval) {
 851         case GDK_space:
 852                 if (textview_scroll_page(mimeview->textview, FALSE))
 853                         return TRUE;
 854
 855                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 856                 if (node) {
 857                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 858                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 859                         return TRUE;
 860                 }
 861                 break;
 862         case GDK_BackSpace:
 863                 textview_scroll_page(mimeview->textview, TRUE);
 864                 return TRUE;
 865         case GDK_Return:
 866                 textview_scroll_one_line(mimeview->textview,
 867                                          (event->state & GDK_MOD1_MASK) != 0);
 868                 return TRUE;
 869         case GDK_n:
 870         case GDK_N:
 871                 BREAK_ON_MODIFIER_KEY();
 872                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 873                 KEY_PRESS_EVENT_STOP();
 874
 875                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 876                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 877                 return TRUE;
 878         case GDK_p:
 879         case GDK_P:
 880                 BREAK_ON_MODIFIER_KEY();
 881                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 882                 KEY_PRESS_EVENT_STOP();
 883
 884                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 885                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 886                 return TRUE;
 887         case GDK_y:
 888                 BREAK_ON_MODIFIER_KEY();
 889                 KEY_PRESS_EVENT_STOP();
 890                 mimeview_save_as(mimeview);
 891                 return TRUE;
 892         case GDK_t:
 893                 BREAK_ON_MODIFIER_KEY();
 894                 KEY_PRESS_EVENT_STOP();
 895                 mimeview_display_as_text(mimeview);
 896                 return TRUE;
 897         case GDK_l:
 898                 BREAK_ON_MODIFIER_KEY();
 899                 KEY_PRESS_EVENT_STOP();
 900                 mimeview_launch(mimeview);
 901                 return TRUE;
 902         default:
 903                 break;
 904         }
 905
 906         if (!mimeview->messageview->mainwin) return FALSE;
 907         summaryview = mimeview->messageview->mainwin->summaryview;
 908         summary_pass_key_press_event(summaryview, event);
 909         return TRUE;
 910 }
 911
 912 static void mimeview_drag_data_get(GtkWidget        *widget,
 913                                    GdkDragContext   *drag_context,
 914                                    GtkSelectionData *selection_data,
 915                                    guint             info,
 916                                    guint             time,
 917                                    MimeView         *mimeview)
 918 {
 919         gchar *filename, *uriname;
 920         MimeInfo *partinfo;
 921
 922         if (!mimeview->opened) return;
 923         if (!mimeview->file) return;
 924
 925         partinfo = mimeview_get_selected_part(mimeview);
 926         if (!partinfo) return;
 927         if (!partinfo->filename && !partinfo->name) return;
 928
 929         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 930         filename = g_basename(filename);
 931         if (*filename == '\0') return;
 932
 933         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 934                                filename, NULL);
 935
 936         if (procmime_get_part(filename, partinfo) < 0)
 937                 alertpanel_error
 938                         (_("Can't save the part of multipart message."));
 939
 940         uriname = g_strconcat("file:/", filename, NULL);
 941         gtk_selection_data_set(selection_data, selection_data->target, 8,
 942                                uriname, strlen(uriname));
 943
 944         g_free(uriname);
 945         g_free(filename);
 946 }
 947
 948 static void mimeview_save_all(MimeView *mimeview)
 949 {
 950         gchar *dirname;
 951         gchar *defname = NULL;
 952         MimeInfo *partinfo;
 953         MimeInfo *attachment;
 954         gchar buf[1024];
 955
 956         if (!mimeview->opened) return;
 957         if (!mimeview->file) return;
 958
 959         partinfo = mimeview_get_selected_part(mimeview);
 960         g_return_if_fail(partinfo != NULL);
 961
 962         dirname = filesel_select_file(_("Save as"), defname);
 963         if (!dirname) return;
 964
 965         /* return to first children */
 966         if (!partinfo->parent->children) return;  /* multipart container? */
 967         attachment = partinfo->parent->children->next;
 968         /* for each attachment, extract it in the selected dir. */
 969         while (attachment != NULL) {
 970                 static guint subst_cnt = 1;
 971                 gchar *attachdir;
 972                 gchar *attachname = g_strdup(get_part_name(attachment));
 973                 AlertValue aval = G_ALERTDEFAULT;
 974                 gchar *res;
 975
 976                 if (!attachname || !strlen(attachname))
 977                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 978                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 979                 g_snprintf(buf, sizeof(buf), "%s%s",
 980                            dirname,
 981                            (attachname[0] == G_DIR_SEPARATOR)
 982                            ? &attachname[1]
 983                            : attachname);
 984                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 985                 attachdir = g_dirname(buf);
 986                 make_dir_hier(attachdir);
 987                 g_free(attachdir);
 988
 989                 if (is_file_exist(buf)) {
 990                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 991                                               attachname);
 992                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 993                                           _("Cancel"), NULL);
 994                         g_free(res);
 995                 }
 996                 g_free(attachname);
 997
 998                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, attachment) < 0))
 999                         alertpanel_error(_("Can't save the part of multipart message."));
1000                 attachment = attachment->next;
1001         }
1002 }
1003
1004 static void mimeview_display_as_text(MimeView *mimeview)
1005 {
1006         MimeInfo *partinfo;
1007
1008         if (!mimeview->opened) return;
1009
1010         partinfo = mimeview_get_selected_part(mimeview);
1011         if (!partinfo)  {
1012                 partinfo = (MimeInfo *) gtk_object_get_data
1013                         (GTK_OBJECT(mimeview->popupmenu),
1014                          "pop_partinfo");
1015                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1016                                     "pop_partinfo", NULL);
1017
1018         }
1019         g_return_if_fail(partinfo != NULL);
1020         mimeview_show_message_part(mimeview, partinfo);
1021 }
1022
1023 static void mimeview_save_as(MimeView *mimeview)
1024 {
1025         gchar *filename;
1026         gchar *defname = NULL;
1027         MimeInfo *partinfo;
1028         gchar *res;
1029
1030         if (!mimeview->opened) return;
1031         if (!mimeview->file) return;
1032
1033         partinfo = mimeview_get_selected_part(mimeview);
1034         if (!partinfo) {
1035                 partinfo = (MimeInfo *) gtk_object_get_data
1036                         (GTK_OBJECT(mimeview->popupmenu),
1037                          "pop_partinfo");
1038                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1039                                     "pop_partinfo", NULL);
1040         }
1041         g_return_if_fail(partinfo != NULL);
1042
1043         if (partinfo->filename)
1044                 defname = partinfo->filename;
1045         else if (partinfo->name) {
1046                 Xstrdup_a(defname, partinfo->name, return);
1047                 subst_for_filename(defname);
1048         }
1049
1050         filename = filesel_select_file(_("Save as"), defname);
1051         if (!filename) return;
1052         if (is_file_exist(filename)) {
1053                 AlertValue aval;
1054                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
1055                                       filename);
1056                 aval = alertpanel(_("Overwrite"), res, _("OK"),
1057                                   _("Cancel"), NULL);
1058                 g_free(res);
1059                 if (G_ALERTDEFAULT != aval) return;
1060         }
1061
1062         if (procmime_get_part(filename, partinfo) < 0)
1063                 alertpanel_error
1064                         (_("Can't save the part of multipart message."));
1065 }
1066
1067 static void mimeview_launch(MimeView *mimeview)
1068 {
1069         MimeInfo *partinfo;
1070         gchar *filename;
1071
1072         if (!mimeview->opened) return;
1073         if (!mimeview->file) return;
1074
1075         partinfo = mimeview_get_selected_part(mimeview);
1076         if (!partinfo) {
1077                 partinfo = (MimeInfo *) gtk_object_get_data
1078                         (GTK_OBJECT(mimeview->popupmenu),
1079                          "pop_partinfo");
1080                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1081                                     "pop_partinfo", NULL);
1082         }
1083         g_return_if_fail(partinfo != NULL);
1084
1085         filename = procmime_get_tmp_file_name(partinfo);
1086
1087         if (procmime_get_part(filename, partinfo) < 0)
1088                 alertpanel_error
1089                         (_("Can't save the part of multipart message."));
1090         else
1091                 mimeview_view_file(filename, partinfo, NULL);
1092
1093         g_free(filename);
1094 }
1095
1096 static void mimeview_open_with(MimeView *mimeview)
1097 {
1098         MimeInfo *partinfo;
1099         gchar *filename;
1100         gchar *cmd;
1101
1102         if (!mimeview->opened) return;
1103         if (!mimeview->file) return;
1104
1105         partinfo = mimeview_get_selected_part(mimeview);
1106         if (!partinfo) {
1107                 partinfo = (MimeInfo *) gtk_object_get_data
1108                         (GTK_OBJECT(mimeview->popupmenu),
1109                          "pop_partinfo");
1110                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1111                                     "pop_partinfo", NULL);
1112         }
1113         g_return_if_fail(partinfo != NULL);
1114
1115         filename = procmime_get_tmp_file_name(partinfo);
1116
1117         if (procmime_get_part(filename, partinfo) < 0) {
1118                 alertpanel_error
1119                         (_("Can't save the part of multipart message."));
1120                 g_free(filename);
1121                 return;
1122         }
1123
1124         if (!prefs_common.mime_open_cmd_history)
1125                 prefs_common.mime_open_cmd_history =
1126                         add_history(NULL, prefs_common.mime_open_cmd);
1127
1128         cmd = input_dialog_combo
1129                 (_("Open with"),
1130                  _("Enter the command line to open file:\n"
1131                    "(`%s' will be replaced with file name)"),
1132                  prefs_common.mime_open_cmd,
1133                  prefs_common.mime_open_cmd_history,
1134                  TRUE);
1135         if (cmd) {
1136                 mimeview_view_file(filename, partinfo, cmd);
1137                 g_free(prefs_common.mime_open_cmd);
1138                 prefs_common.mime_open_cmd = cmd;
1139                 prefs_common.mime_open_cmd_history =
1140                         add_history(prefs_common.mime_open_cmd_history, cmd);
1141         }
1142
1143         g_free(filename);
1144 }
1145
1146 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1147                                const gchar *cmdline)
1148 {
1149         static gchar *default_image_cmdline = "display '%s'";
1150         static gchar *default_audio_cmdline = "play '%s'";
1151         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1152         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1153         gchar buf[1024];
1154         gchar m_buf[1024];
1155         const gchar *cmd;
1156         const gchar *def_cmd;
1157         const gchar *p;
1158
1159         if (cmdline) {
1160                 cmd = cmdline;
1161                 def_cmd = NULL;
1162         } else if (MIMETYPE_APPLICATION == partinfo->type) {
1163                 return;
1164         } else if (MIMETYPE_IMAGE == partinfo->type) {
1165                 cmd = prefs_common.mime_image_viewer;
1166                 def_cmd = default_image_cmdline;
1167         } else if (MIMETYPE_AUDIO == partinfo->type) {
1168                 cmd = prefs_common.mime_audio_player;
1169                 def_cmd = default_audio_cmdline;
1170         } else if (MIMETYPE_TEXT == partinfo->type && !strcmp(partinfo->subtype, "html")) {
1171                 cmd = prefs_common.uri_cmd;
1172                 def_cmd = default_html_cmdline;
1173         } else {
1174                 gchar *content_type;
1175
1176                 content_type = g_strdup_printf("%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
1177                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1178                            content_type, "%s");
1179                 g_free(content_type);
1180                 cmd = m_buf;
1181                 def_cmd = NULL;
1182         }
1183
1184         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1185             !strchr(p + 2, '%'))
1186                 g_snprintf(buf, sizeof(buf), cmd, filename);
1187         else {
1188                 if (cmd)
1189                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1190                 if (def_cmd)
1191                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1192                 else
1193                         return;
1194         }
1195
1196         execute_command_line(buf, TRUE);
1197 }
1198
1199 #if USE_GPGME
1200 static void update_node_name(GtkCTree *ctree, GtkCTreeNode *node,
1201                              gpointer data)
1202 {
1203         MimeInfo *partinfo;
1204         gchar *part_name;
1205
1206         partinfo = gtk_ctree_node_get_row_data(ctree, node);
1207         g_return_if_fail(partinfo != NULL);
1208
1209         part_name = get_part_name(partinfo);
1210         gtk_ctree_node_set_text(ctree, node, COL_NAME, part_name);
1211 }
1212
1213 static void mimeview_update_names(MimeView *mimeview)
1214 {
1215         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
1216
1217         gtk_ctree_pre_recursive(ctree, NULL, update_node_name, NULL);
1218 }
1219
1220 static void mimeview_update_signature_info(MimeView *mimeview)
1221 {
1222         MimeInfo *partinfo;
1223
1224         if (!mimeview) return;
1225         if (!mimeview->opened) return;
1226
1227         partinfo = mimeview_get_selected_part(mimeview);
1228         if (!partinfo) return;
1229
1230         if ((partinfo->type == MIMETYPE_APPLICATION) &&
1231             !g_strcasecmp(partinfo->subtype, "application/pgp-signature")) {
1232                 mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1233                 textview_show_signature_part(mimeview->textview, partinfo);
1234         }
1235 }
1236
1237 void mimeview_check_signature(MimeView *mimeview)
1238 {
1239         MimeInfo *mimeinfo;
1240         FILE *fp;
1241
1242         g_return_if_fail (mimeview_is_signed(mimeview));
1243         g_return_if_fail (gpg_started);
1244
1245         mimeinfo = gtk_ctree_node_get_row_data
1246                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
1247         g_return_if_fail(mimeinfo != NULL);
1248         g_return_if_fail(mimeview->file != NULL);
1249
1250         while (mimeinfo->parent)
1251                 mimeinfo = mimeinfo->parent;
1252
1253         if ((fp = fopen(mimeview->file, "rb")) == NULL) {
1254                 FILE_OP_ERROR(mimeview->file, "fopen");
1255                 return;
1256         }
1257
1258         rfc2015_check_signature(mimeinfo, fp);
1259         fclose(fp);
1260
1261         mimeview_update_names(mimeview);
1262         mimeview_update_signature_info(mimeview);
1263
1264         textview_show_message(mimeview->messageview->textview, mimeinfo,
1265                               mimeview->file);
1266
1267         mimeview_update(mimeview);
1268 }
1269 #endif /* USE_GPGME */
1270
1271 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1272 {
1273         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1274 }
1275
1276 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1277 {
1278         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1279 }
1280
1281 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1282 {
1283         GSList *mimeview_list, *viewer_list;
1284
1285         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1286                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1287
1288                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1289                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1290                         mimeview->mimeviewer = NULL;
1291                 }
1292
1293                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1294                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1295
1296                         mimeviewer->destroy_viewer(mimeviewer);
1297                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1298                 }
1299         }
1300
1301         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1302 }
1303
1304 static gboolean icon_clicked_cb (GtkWidget *button, GdkEventButton *event, MimeView *mimeview)
1305 {
1306         gint      num;
1307         MimeInfo *partinfo;
1308
1309         num      = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(button), "icon_number"));
1310         partinfo = gtk_object_get_data(GTK_OBJECT(button), "partinfo");
1311         if (event->button == 1) {
1312                 icon_selected(mimeview, num, partinfo);
1313                 gtk_widget_grab_focus(button);
1314
1315                 if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button)))
1316                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1317                 else
1318                         gtk_signal_emit_stop_by_name(GTK_OBJECT(button), "button_press_event");
1319         }
1320
1321         part_button_pressed(mimeview, event, partinfo);
1322
1323         return TRUE;
1324 }
1325
1326 static void icon_selected (MimeView *mimeview, gint num, MimeInfo *partinfo)
1327 {
1328         if (num == 1 && (partinfo->type == MIMETYPE_TEXT)) {
1329                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 0);
1330                 /* don't set the ctree, as it will unload the plugin, and
1331                  * we want to be able to switch quickly between the text
1332                  * part and the attachment */
1333         } else {
1334                 GtkCTreeNode *node;
1335                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 1);
1336                 node = gtk_ctree_find_by_row_data(GTK_CTREE(mimeview->ctree), NULL, partinfo);
1337                 if (node)
1338                         gtk_ctree_select(GTK_CTREE(mimeview->ctree), node);
1339         }
1340 }
1341
1342 #undef  KEY_PRESS_EVENT_STOP
1343 #define KEY_PRESS_EVENT_STOP() \
1344         if (gtk_signal_n_emissions_by_name \
1345                 (GTK_OBJECT(button), "key_press_event") > 0) { \
1346                 gtk_signal_emit_stop_by_name(GTK_OBJECT(button), \
1347                                              "key_press_event"); \
1348         }
1349 static gint icon_key_pressed(GtkWidget *button, GdkEventKey *event,
1350                              MimeView *mimeview)
1351 {
1352         gint          num;
1353         MimeInfo     *partinfo;
1354         SummaryView  *summaryview;
1355         TextView     *textview;
1356
1357         num      = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(button), "icon_number"));
1358         partinfo = gtk_object_get_data(GTK_OBJECT(button), "partinfo");
1359
1360         if (!event) return FALSE;
1361
1362         if (gtk_notebook_get_current_page(GTK_NOTEBOOK(mimeview->notebook)) == 0)
1363                 textview = mimeview->messageview->textview;
1364         else
1365                 textview = mimeview->textview;
1366
1367         switch (event->keyval) {
1368         case GDK_space:
1369                 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1370                         /* stop the button being untoggled */
1371                         KEY_PRESS_EVENT_STOP();
1372                         if (textview_scroll_page(textview, FALSE))
1373                                 return TRUE;
1374
1375                         if (icon_list_select_by_number(mimeview, num + 1))
1376                                 return TRUE;
1377                 } else {
1378                         icon_selected(mimeview, num, partinfo);
1379                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1380                         return TRUE;
1381                 }
1382
1383                 break;
1384         case GDK_BackSpace:
1385                 textview_scroll_page(textview, TRUE);
1386                 return TRUE;
1387         case GDK_Return:
1388                 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1389                         KEY_PRESS_EVENT_STOP();
1390                         textview_scroll_one_line(textview,
1391                                                  (event->state & GDK_MOD1_MASK) != 0);
1392                         return TRUE;
1393                 } else {
1394                         icon_selected(mimeview, num, partinfo);
1395                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1396                         return TRUE;
1397                 }
1398
1399         case GDK_n:
1400         case GDK_N:
1401                 BREAK_ON_MODIFIER_KEY();
1402                 if (icon_list_select_by_number(mimeview, num + 1))
1403                         KEY_PRESS_EVENT_STOP();
1404                         return TRUE;
1405                 break;
1406
1407         case GDK_p:
1408         case GDK_P:
1409                 BREAK_ON_MODIFIER_KEY();
1410                 if (icon_list_select_by_number(mimeview, num - 1))
1411                         KEY_PRESS_EVENT_STOP();
1412                         return TRUE;
1413                 break;
1414
1415         case GDK_y:
1416                 BREAK_ON_MODIFIER_KEY();
1417                 if (gtk_notebook_get_current_page(GTK_NOTEBOOK(mimeview->notebook)) == 0)
1418                         break;
1419                 KEY_PRESS_EVENT_STOP();
1420                 mimeview_save_as(mimeview);
1421                 return TRUE;
1422         case GDK_t:
1423                 BREAK_ON_MODIFIER_KEY();
1424                 if (gtk_notebook_get_current_page(GTK_NOTEBOOK(mimeview->notebook)) == 0)
1425                         break;
1426                 KEY_PRESS_EVENT_STOP();
1427                 mimeview_display_as_text(mimeview);
1428                 return TRUE;
1429         case GDK_l:
1430                 BREAK_ON_MODIFIER_KEY();
1431                 if (gtk_notebook_get_current_page(GTK_NOTEBOOK(mimeview->notebook)) == 0)
1432                         break;
1433                 KEY_PRESS_EVENT_STOP();
1434                 mimeview_launch(mimeview);
1435                 return TRUE;
1436         default:
1437                 break;
1438         }
1439
1440         if (!mimeview->messageview->mainwin) return FALSE;
1441         summaryview = mimeview->messageview->mainwin->summaryview;
1442         summary_pass_key_press_event(summaryview, event);
1443         return TRUE;
1444 }
1445
1446 static void toggle_icon(GtkToggleButton *button, MimeView *mimeview)
1447 {
1448         GList *child;
1449
1450         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1451         for (; child != NULL; child = g_list_next(child)) {
1452                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1453                     GTK_TOGGLE_BUTTON(child->data) != button &&
1454                     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(child->data)))
1455                         gtk_toggle_button_set_active
1456                                 (GTK_TOGGLE_BUTTON(child->data),
1457                                  FALSE);
1458         }
1459 }
1460
1461 static void icon_list_append_icon (MimeView *mimeview, MimeInfo *mimeinfo)
1462 {
1463         GtkWidget *pixmap;
1464         GtkWidget *vbox;
1465         GtkWidget *button;
1466         gchar *tip;
1467         gchar *desc = NULL;
1468         StockPixmap stockp;
1469
1470         vbox = mimeview->icon_vbox;
1471         mimeview->icon_count++;
1472         button = gtk_toggle_button_new();
1473         gtk_button_set_relief(GTK_BUTTON(button), GTK_RELIEF_NONE);
1474         gtk_object_set_data(GTK_OBJECT(button), "icon_number",
1475                 GINT_TO_POINTER(mimeview->icon_count));
1476         gtk_object_set_data(GTK_OBJECT(button), "partinfo",
1477                 mimeinfo);
1478
1479         switch (mimeinfo->type) {
1480
1481         case MIMETYPE_TEXT:
1482                 if (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "html"))
1483                         stockp = STOCK_PIXMAP_MIME_TEXT_HTML;
1484                 else if  (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "enriched"))
1485                         stockp = STOCK_PIXMAP_MIME_TEXT_ENRICHED;
1486                 else
1487                         stockp = STOCK_PIXMAP_MIME_TEXT_PLAIN;
1488                 break;
1489         case MIMETYPE_MESSAGE:
1490                 stockp = STOCK_PIXMAP_MIME_TEXT_PLAIN;
1491                 break;
1492         case MIMETYPE_APPLICATION:
1493 #ifdef USE_GPGME
1494                 if (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "pgp-signature")) {
1495                         if (mimeinfo->sigstatus_full) {
1496                                 desc = mimeinfo->sigstatus;
1497                                 if (mimeinfo->sig_ok)
1498                                         stockp = STOCK_PIXMAP_MIME_GPG_PASSED;
1499                                 else if (mimeinfo->sig_unknown)
1500                                         stockp = STOCK_PIXMAP_MIME_GPG_UNKNOWN;
1501                                 else if (mimeinfo->sig_expired
1502                                          || mimeinfo->key_expired)
1503                                         stockp = STOCK_PIXMAP_MIME_GPG_EXPIRED;
1504                                 else
1505                                         stockp = STOCK_PIXMAP_MIME_GPG_FAILED;
1506                         } else
1507                                 stockp = STOCK_PIXMAP_MIME_GPG_SIGNED;
1508                 } else
1509
1510 #endif
1511                 if (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "octet-stream"))
1512                         stockp = STOCK_PIXMAP_MIME_APPLICATION_OCTET_STREAM;
1513                 else
1514                         stockp = STOCK_PIXMAP_MIME_APPLICATION;
1515                 break;
1516         case MIMETYPE_IMAGE:
1517                 stockp = STOCK_PIXMAP_MIME_IMAGE;
1518                 break;
1519         case MIMETYPE_AUDIO:
1520                 stockp = STOCK_PIXMAP_MIME_AUDIO;
1521                 break;
1522         default:
1523                 stockp = STOCK_PIXMAP_MIME_UNKNOWN;
1524                 break;
1525         }
1526
1527         pixmap = stock_pixmap_widget(mimeview->mainwin->window, stockp);
1528         gtk_container_add(GTK_CONTAINER(button), pixmap);
1529
1530         if (!desc) {
1531                 if (prefs_common.attach_desc)
1532                         desc = get_part_description(mimeinfo);
1533                 else
1534                         desc = get_part_name(mimeinfo);
1535         }
1536
1537         if (desc && *desc)
1538                 tip = g_strdup_printf("%s\n%s/%s\n%s", desc,
1539                                 procmime_get_type_str(mimeinfo->type),
1540                                 mimeinfo->subtype,
1541                                 to_human_readable(mimeinfo->length));
1542         else
1543                 tip = g_strdup_printf("%s/%s\n%s",
1544                                 procmime_get_type_str(mimeinfo->type),
1545                                 mimeinfo->subtype,
1546                                 to_human_readable(mimeinfo->length));
1547
1548         gtk_tooltips_set_tip(mimeview->tooltips, button, tip, NULL);
1549         g_free(tip);
1550         gtk_widget_show_all(button);
1551         gtk_signal_connect(GTK_OBJECT(button), "button_press_event",
1552                            GTK_SIGNAL_FUNC(icon_clicked_cb), mimeview);
1553         gtk_signal_connect(GTK_OBJECT(button), "key_press_event",
1554                            GTK_SIGNAL_FUNC(icon_key_pressed), mimeview);
1555         gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
1556
1557 }
1558
1559 static void icon_list_clear (MimeView *mimeview)
1560 {
1561         GList     *child;
1562         GtkAdjustment *adj;
1563
1564         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1565         for (; child != NULL; child = g_list_next(child)) {
1566                 gtkut_container_remove(GTK_CONTAINER(mimeview->icon_vbox),
1567                                        GTK_WIDGET(child->data));
1568         }
1569         mimeview->icon_count = 0;
1570         adj  = gtk_layout_get_vadjustment(GTK_LAYOUT(mimeview->icon_scroll));
1571         adj->value = adj->lower;
1572         gtk_signal_emit_by_name(GTK_OBJECT (adj), "value_changed");
1573 }
1574
1575 static void icon_list_toggle_by_mime_info(MimeView      *mimeview,
1576                                           MimeInfo      *mimeinfo)
1577 {
1578         GList *child;
1579
1580         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1581         for (; child != NULL; child = g_list_next(child)) {
1582                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1583                     gtk_object_get_data(GTK_OBJECT(child->data),
1584                                         "partinfo") == (gpointer)mimeinfo) {
1585                         toggle_icon(GTK_TOGGLE_BUTTON(child->data), mimeview);
1586                         gtk_toggle_button_set_active
1587                                 (GTK_TOGGLE_BUTTON(child->data), TRUE);
1588                 }
1589         }
1590 }
1591
1592 /*!
1593  *\brief        Used to 'click' the next or previous icon.
1594  *
1595  *\return       true if the icon 'number' exists and was selected.
1596  */
1597 static gboolean icon_list_select_by_number(MimeView     *mimeview,
1598                                            gint          number)
1599 {
1600         GList *child;
1601
1602         if (number == 0) return FALSE;
1603         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1604         for (; child != NULL; child = g_list_next(child)) {
1605                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1606                     GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(child->data),
1607                                         "icon_number")) == number) {
1608                         icon_selected(mimeview, number,
1609                                       (MimeInfo*)gtk_object_get_data(GTK_OBJECT(child->data),
1610                                                                      "partinfo"));
1611                         toggle_icon(GTK_TOGGLE_BUTTON(child->data), mimeview);
1612                         gtk_toggle_button_set_active
1613                                 (GTK_TOGGLE_BUTTON(child->data), TRUE);
1614                         gtk_widget_grab_focus(GTK_WIDGET(child->data));
1615
1616                         return TRUE;
1617                 }
1618         }
1619         return FALSE;
1620 }
1621
1622 static void icon_scroll_size_allocate_cb(GtkWidget *widget,
1623                                         GtkAllocation *size, MimeView *mimeview)
1624 {
1625         GtkAllocation *mainbox_size;
1626         GtkAllocation *vbox_size;
1627         GtkAllocation *layout_size;
1628         GtkAdjustment *adj;
1629
1630         adj = gtk_layout_get_vadjustment(GTK_LAYOUT(mimeview->icon_scroll));
1631
1632         mainbox_size = &mimeview->icon_mainbox->allocation;
1633         vbox_size = &mimeview->icon_vbox->allocation;
1634         layout_size = &mimeview->icon_scroll->allocation;
1635
1636         /* centralise the vbox */
1637         gtk_layout_move(GTK_LAYOUT(mimeview->icon_scroll), mimeview->icon_vbox,
1638                         (mainbox_size->width - vbox_size->width)/2, 0);
1639
1640         gtk_layout_set_size(GTK_LAYOUT(mimeview->icon_scroll),
1641                             GTK_LAYOUT(mimeview->icon_scroll)->width,
1642                             MAX(vbox_size->height, layout_size->height));
1643         adj->step_increment = 5;
1644 }
1645
1646 static void icon_list_create(MimeView *mimeview, MimeInfo *mimeinfo)
1647 {
1648         GtkRequisition size;
1649         gint           width;
1650         g_return_if_fail(mimeinfo != NULL);
1651
1652         if (mimeinfo->children)
1653                 mimeinfo = mimeinfo->children;
1654
1655         while (mimeinfo != NULL) {
1656                 if (mimeinfo->children)
1657                         icon_list_create(mimeview, mimeinfo);
1658                 else
1659                         icon_list_append_icon(mimeview, mimeinfo);
1660                 mimeinfo = mimeinfo->next;
1661         }
1662         gtk_widget_size_request(mimeview->icon_vbox, &size);
1663         width = size.width + 4;
1664         if (width > mimeview->icon_mainbox->requisition.width) {
1665                 gtk_widget_set_usize(mimeview->icon_mainbox,
1666                                      width, -1);
1667         }
1668
1669 }
1670
1671 static void mime_toggle_button_cb (GtkWidget *button, MimeView *mimeview)
1672 {
1673         gtk_widget_ref(button);
1674
1675         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1676                 gtk_arrow_set(GTK_ARROW(GTK_BIN(button)->child), GTK_ARROW_RIGHT,
1677                                         GTK_SHADOW_NONE);
1678                 gtk_widget_hide(mimeview->icon_mainbox);
1679                 gtk_widget_show(mimeview->ctree_mainbox);
1680                 gtk_paned_set_position(GTK_PANED(mimeview->paned), mimeview->oldsize);
1681
1682                 gtkut_container_remove(GTK_CONTAINER(mimeview->icon_mainbox),
1683                                         button);
1684                 gtk_box_pack_end(GTK_BOX(mimeview->ctree_mainbox),
1685                                    button, FALSE, FALSE, 0);
1686                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->notebook), 1);
1687         } else {
1688                 gtk_arrow_set(GTK_ARROW(GTK_BIN(button)->child), GTK_ARROW_LEFT,
1689                               GTK_SHADOW_NONE);
1690                 mimeview->oldsize = mimeview->ctree_mainbox->allocation.height;
1691                 gtk_widget_hide(mimeview->ctree_mainbox);
1692                 gtk_widget_show(mimeview->icon_mainbox);
1693                 gtk_paned_set_position(GTK_PANED(mimeview->paned), 0);
1694
1695                 gtkut_container_remove(GTK_CONTAINER(mimeview->ctree_mainbox),
1696                                         button);
1697                 gtk_box_pack_start(GTK_BOX(mimeview->icon_mainbox),
1698                                    button, FALSE, FALSE, 0);
1699                 gtk_box_reorder_child(GTK_BOX(button->parent), button, 0);
1700                 if (mimeview->opened)
1701                         icon_list_toggle_by_mime_info
1702                                 (mimeview, gtk_ctree_node_get_row_data(GTK_CTREE(mimeview->ctree),
1703                                                                        mimeview->opened));
1704
1705         }
1706         gtk_widget_grab_focus(button);
1707         gtk_widget_unref(button);
1708
1709 }
1710
1711 void mimeview_update (MimeView *mimeview) {
1712         if (mimeview && mimeview->mimeinfo) {
1713                 icon_list_clear(mimeview);
1714                 icon_list_create(mimeview, mimeview->mimeinfo);
1715         }
1716 }