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