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
  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_selected               (MimeView       *mimeview,
 122                                          gint            num,
 123                                          MimeInfo       *partinfo);
 124 static gint icon_key_pressed            (GtkWidget      *button,
 125                                          GdkEventKey    *event,
 126                                          MimeView       *mimeview);
 127 static void toggle_icon                 (GtkToggleButton *button,
 128                                          MimeView       *mimeview);
 129 static void icon_list_append_icon       (MimeView       *mimeview,
 130                                          MimeInfo       *mimeinfo);
 131 static void icon_list_create            (MimeView       *mimeview,
 132                                          MimeInfo       *mimeinfo);
 133 static void icon_list_clear             (MimeView       *mimeview);
 134 static void icon_list_toggle_by_mime_info (MimeView     *mimeview,
 135                                            MimeInfo     *mimeinfo);
 136 static gboolean icon_list_select_by_number(MimeView     *mimeview,
 137                                            gint          number);
 138 static void mime_toggle_button_cb       (GtkWidget      *button,
 139                                          MimeView       *mimeview);
 140 static void part_button_pressed         (MimeView       *mimeview,
 141                                          GdkEventButton *event,
 142                                          MimeInfo       *partinfo);
 143 static void icon_scroll_size_allocate_cb(GtkWidget      *widget,
 144                                          GtkAllocation  *layout_size,
 145                                          MimeView       *mimeview);
 146
 147 static GtkItemFactoryEntry mimeview_popup_entries[] =
 148 {
 149         {N_("/_Open"),            NULL, mimeview_launch,          0, NULL},
 150         {N_("/Open _with..."),    NULL, mimeview_open_with,       0, NULL},
 151         {N_("/_Display as text"), NULL, mimeview_display_as_text, 0, NULL},
 152         {N_("/_Save as..."),      NULL, mimeview_save_as,         0, NULL},
 153         {N_("/Save _all..."),     NULL, mimeview_save_all,        0, NULL},
 154 };
 155
 156 static GtkTargetEntry mimeview_mime_types[] =
 157 {
 158         {"text/uri-list", 0, 0}
 159 };
 160
 161 GSList *mimeviewer_factories;
 162 GSList *mimeviews;
 163
 164 MimeView *mimeview_create(MainWindow *mainwin)
 165 {
 166         MimeView *mimeview;
 167
 168         GtkWidget *paned;
 169         GtkWidget *scrolledwin;
 170         GtkWidget *ctree;
 171         GtkWidget *mime_notebook;
 172         GtkWidget *popupmenu;
 173         GtkWidget *ctree_mainbox;
 174         GtkWidget *vbox;
 175         GtkWidget *mime_toggle;
 176         GtkWidget *icon_mainbox;
 177         GtkWidget *icon_scroll;
 178         GtkWidget *icon_vbox;
 179         GtkWidget *arrow;
 180         GtkWidget *scrollbutton;
 181         GtkWidget *hbox;
 182         GtkTooltips *tooltips;
 183         GtkItemFactory *popupfactory;
 184         NoticeView *siginfoview;
 185         gchar *titles[N_MIMEVIEW_COLS];
 186         gint n_entries;
 187         gint i;
 188
 189         debug_print("Creating MIME view...\n");
 190         mimeview = g_new0(MimeView, 1);
 191
 192         titles[COL_MIMETYPE] = _("MIME Type");
 193         titles[COL_SIZE]     = _("Size");
 194         titles[COL_NAME]     = _("Name");
 195
 196         scrolledwin = gtk_scrolled_window_new(NULL, NULL);
 197         gtk_widget_show(scrolledwin);
 198         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
 199                                        GTK_POLICY_AUTOMATIC,
 200                                        GTK_POLICY_ALWAYS);
 201
 202         ctree = gtk_sctree_new_with_titles(N_MIMEVIEW_COLS, 0, titles);
 203         gtk_widget_show(ctree);
 204         gtk_clist_set_selection_mode(GTK_CLIST(ctree), GTK_SELECTION_BROWSE);
 205         gtk_ctree_set_line_style(GTK_CTREE(ctree), GTK_CTREE_LINES_NONE);
 206         gtk_clist_set_column_justification(GTK_CLIST(ctree), COL_SIZE,
 207                                            GTK_JUSTIFY_RIGHT);
 208         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_MIMETYPE, 240);
 209         gtk_clist_set_column_width(GTK_CLIST(ctree), COL_SIZE, 90);
 210         for (i = 0; i < N_MIMEVIEW_COLS; i++)
 211                 GTK_WIDGET_UNSET_FLAGS(GTK_CLIST(ctree)->column[i].button,
 212                                        GTK_CAN_FOCUS);
 213         gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
 214
 215         gtk_signal_connect(GTK_OBJECT(ctree), "tree_select_row",
 216                            GTK_SIGNAL_FUNC(mimeview_selected), mimeview);
 217         gtk_signal_connect(GTK_OBJECT(ctree), "button_press_event",
 218                            GTK_SIGNAL_FUNC(mimeview_button_pressed), mimeview);
 219         gtk_signal_connect(GTK_OBJECT(ctree), "key_press_event",
 220                            GTK_SIGNAL_FUNC(mimeview_key_pressed), mimeview);
 221         gtk_signal_connect(GTK_OBJECT (ctree),"start_drag",
 222                            GTK_SIGNAL_FUNC (mimeview_start_drag), mimeview);
 223         gtk_signal_connect(GTK_OBJECT(ctree), "drag_data_get",
 224                            GTK_SIGNAL_FUNC(mimeview_drag_data_get), mimeview);
 225
 226         mime_notebook = gtk_notebook_new();
 227         gtk_widget_show(mime_notebook);
 228         GTK_WIDGET_UNSET_FLAGS(mime_notebook, GTK_CAN_FOCUS);
 229         gtk_notebook_set_show_tabs(GTK_NOTEBOOK(mime_notebook), FALSE);
 230         gtk_notebook_set_show_border(GTK_NOTEBOOK(mime_notebook), FALSE);
 231
 232         icon_vbox = gtk_vbox_new(FALSE, 2);
 233         gtk_widget_show(icon_vbox);
 234         icon_scroll = gtk_layout_new(NULL, NULL);
 235         gtk_widget_show(icon_scroll);
 236         gtk_layout_put(GTK_LAYOUT(icon_scroll), icon_vbox, 0, 0);
 237         scrollbutton = gtk_vscrollbutton_new(gtk_layout_get_vadjustment(GTK_LAYOUT(icon_scroll)));
 238         gtk_widget_show(scrollbutton);
 239
 240         mime_toggle = gtk_toggle_button_new();
 241         gtk_widget_show(mime_toggle);
 242         arrow = gtk_arrow_new(GTK_ARROW_LEFT, GTK_SHADOW_NONE);
 243         gtk_widget_show(arrow);
 244         gtk_container_add(GTK_CONTAINER(mime_toggle), arrow);
 245         gtk_signal_connect(GTK_OBJECT(mime_toggle), "toggled",
 246                            GTK_SIGNAL_FUNC(mime_toggle_button_cb), mimeview);
 247
 248         icon_mainbox = gtk_vbox_new(FALSE, 0);
 249         gtk_widget_show(icon_mainbox);
 250         gtk_box_pack_start(GTK_BOX(icon_mainbox), mime_toggle, FALSE, FALSE, 0);
 251         gtk_box_pack_start(GTK_BOX(icon_mainbox), icon_scroll, TRUE, TRUE, 3);
 252         gtk_box_pack_end(GTK_BOX(icon_mainbox), scrollbutton, FALSE, FALSE, 0);
 253         gtk_signal_connect(GTK_OBJECT(icon_mainbox), "size_allocate",
 254                         GTK_SIGNAL_FUNC(icon_scroll_size_allocate_cb), mimeview);
 255
 256         ctree_mainbox = gtk_hbox_new(FALSE, 0);
 257         gtk_box_pack_start(GTK_BOX(ctree_mainbox), scrolledwin, TRUE, TRUE, 0);
 258
 259         n_entries = sizeof(mimeview_popup_entries) /
 260                 sizeof(mimeview_popup_entries[0]);
 261         popupmenu = menu_create_items(mimeview_popup_entries, n_entries,
 262                                       "<MimeView>", &popupfactory, mimeview);
 263         tooltips = gtk_tooltips_new();
 264         gtk_tooltips_set_delay(tooltips, 0);
 265
 266         vbox = gtk_vbox_new(FALSE, 0);
 267         gtk_widget_show(vbox);
 268         siginfoview = noticeview_create(mainwin);
 269         noticeview_hide(siginfoview);
 270         gtk_box_pack_start(GTK_BOX(vbox), mime_notebook, TRUE, TRUE, 0);
 271         gtk_box_pack_end(GTK_BOX(vbox), GTK_WIDGET_PTR(siginfoview), FALSE, FALSE, 0);
 272
 273         paned = gtk_vpaned_new();
 274         gtk_widget_show(paned);
 275         gtk_paned_set_gutter_size(GTK_PANED(paned), 0);
 276         gtk_paned_pack1(GTK_PANED(paned), ctree_mainbox, FALSE, TRUE);
 277         gtk_paned_pack2(GTK_PANED(paned), vbox, TRUE, TRUE);
 278
 279         hbox = gtk_hbox_new(FALSE, 0);
 280         gtk_box_pack_start(GTK_BOX(hbox), paned, TRUE, TRUE, 0);
 281         gtk_box_pack_start(GTK_BOX(hbox), icon_mainbox, FALSE, FALSE, 0);
 282
 283         gtk_widget_show(hbox);
 284         gtk_widget_hide(ctree_mainbox);
 285
 286         mimeview->hbox          = hbox;
 287         mimeview->paned         = paned;
 288         mimeview->scrolledwin   = scrolledwin;
 289         mimeview->ctree         = ctree;
 290         mimeview->mime_notebook = mime_notebook;
 291         mimeview->popupmenu     = popupmenu;
 292         mimeview->popupfactory  = popupfactory;
 293         mimeview->type          = -1;
 294         mimeview->ctree_mainbox = ctree_mainbox;
 295         mimeview->icon_scroll   = icon_scroll;
 296         mimeview->icon_vbox     = icon_vbox;
 297         mimeview->icon_mainbox  = icon_mainbox;
 298         mimeview->icon_count    = 0;
 299         mimeview->mainwin       = mainwin;
 300         mimeview->tooltips      = tooltips;
 301         mimeview->oldsize       = 60;
 302         mimeview->mime_toggle   = mime_toggle;
 303         mimeview->siginfoview   = siginfoview;
 304
 305         mimeview->target_list   = gtk_target_list_new(mimeview_mime_types, 1);
 306
 307         mimeviews = g_slist_prepend(mimeviews, mimeview);
 308
 309         return mimeview;
 310 }
 311
 312 void mimeview_init(MimeView *mimeview)
 313 {
 314         textview_init(mimeview->textview);
 315
 316         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 317                 GTK_WIDGET_PTR(mimeview->textview));
 318 }
 319
 320 void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
 321                            const gchar *file)
 322 {
 323         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 324         GtkCTreeNode *node;
 325
 326         mimeview_clear(mimeview);
 327
 328         g_return_if_fail(file != NULL);
 329         g_return_if_fail(mimeinfo != NULL);
 330
 331         mimeview->mimeinfo = mimeinfo;
 332
 333         mimeview->file = g_strdup(file);
 334
 335         gtk_signal_handler_block_by_func(GTK_OBJECT(ctree), mimeview_selected,
 336                                          mimeview);
 337
 338         mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
 339         icon_list_create(mimeview, mimeinfo);
 340
 341         gtk_signal_handler_unblock_by_func(GTK_OBJECT(ctree),
 342                                            mimeview_selected, mimeview);
 343
 344         node = GTK_CTREE_NODE(GTK_CLIST(ctree)->row_list);
 345         if (node) {
 346                 gtk_ctree_select(ctree, node);
 347                 icon_list_toggle_by_mime_info
 348                         (mimeview, gtk_ctree_node_get_row_data(ctree, node));
 349                 gtkut_ctree_set_focus_row(ctree, node);
 350         }
 351 }
 352
 353 void mimeview_destroy(MimeView *mimeview)
 354 {
 355         GSList *cur;
 356
 357         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 358                 MimeViewer *viewer = (MimeViewer *) cur->data;
 359                 gtk_container_remove(GTK_CONTAINER(mimeview->mime_notebook),
 360                         GTK_WIDGET(viewer->get_widget(viewer)));
 361                 viewer->destroy_viewer(viewer);
 362         }
 363         g_slist_free(mimeview->viewers);
 364         gtk_target_list_unref(mimeview->target_list);
 365
 366         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 367         g_free(mimeview->file);
 368         g_free(mimeview);
 369
 370         mimeviews = g_slist_remove(mimeviews, mimeview);
 371
 372 }
 373
 374 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 375 {
 376         return gtk_ctree_node_get_row_data
 377                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 378 }
 379
 380 static void mimeview_set_multipart_tree(MimeView *mimeview,
 381                                         MimeInfo *mimeinfo,
 382                                         GtkCTreeNode *parent)
 383 {
 384         GtkCTreeNode *node;
 385
 386         g_return_if_fail(mimeinfo != NULL);
 387
 388         while (mimeinfo != NULL) {
 389                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 390
 391                 if (mimeinfo->node->children)
 392                         mimeview_set_multipart_tree(mimeview, (MimeInfo *) mimeinfo->node->children->data, node);
 393                 mimeinfo = mimeinfo->node->next != NULL ? (MimeInfo *) mimeinfo->node->next->data : NULL;
 394         }
 395 }
 396
 397 static gchar *get_part_name(MimeInfo *partinfo)
 398 {
 399         gchar *name;
 400
 401         name = g_hash_table_lookup(partinfo->parameters, "name");
 402         if(name == NULL)
 403                 name = "";
 404
 405         return name;
 406 }
 407
 408 static gchar *get_part_description(MimeInfo *partinfo)
 409 {
 410         if (partinfo->description)
 411                 return partinfo->description;
 412         else if (g_hash_table_lookup(partinfo->parameters, "name") != NULL)
 413                 return g_hash_table_lookup(partinfo->parameters, "name");
 414         else
 415                 return "";
 416 }
 417
 418 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 419                                           MimeInfo *partinfo,
 420                                           GtkCTreeNode *parent)
 421 {
 422         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 423         GtkCTreeNode *node;
 424         static gchar content_type[64];
 425         gchar *str[N_MIMEVIEW_COLS];
 426
 427         if (partinfo->type != MIMETYPE_UNKNOWN && partinfo->subtype) {
 428                 g_snprintf(content_type, 64, "%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
 429         } else {
 430                 g_snprintf(content_type, 64, "UNKNOWN");
 431         }
 432
 433         str[COL_MIMETYPE] = content_type;
 434         str[COL_SIZE] = to_human_readable(partinfo->length);
 435         if (prefs_common.attach_desc)
 436                 str[COL_NAME] = get_part_description(partinfo);
 437         else
 438                 str[COL_NAME] = get_part_name(partinfo);
 439
 440         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 441                                      NULL, NULL, NULL, NULL,
 442                                      FALSE, TRUE);
 443         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 444
 445         return node;
 446 }
 447
 448 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 449 {
 450         FILE *fp;
 451         const gchar *fname;
 452
 453         if (!partinfo) return;
 454
 455         fname = mimeview->file;
 456         if (!fname) return;
 457
 458         if ((fp = fopen(fname, "rb")) == NULL) {
 459                 FILE_OP_ERROR(fname, "fopen");
 460                 return;
 461         }
 462
 463         if (fseek(fp, partinfo->offset, SEEK_SET) < 0) {
 464                 FILE_OP_ERROR(mimeview->file, "fseek");
 465                 fclose(fp);
 466                 return;
 467         }
 468
 469         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 470         textview_show_part(mimeview->textview, partinfo, fp);
 471
 472         fclose(fp);
 473 }
 474
 475 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 476 {
 477         GSList *cur;
 478         MimeViewerFactory *factory = NULL;
 479         MimeViewer *viewer = NULL;
 480
 481 /*
 482  * FNM_CASEFOLD is a GNU extension
 483  * if its not defined copy the string to the stack and
 484  * convert the copy to lower case
 485  */
 486 #ifndef FNM_CASEFOLD
 487 #define FNM_CASEFOLD 0
 488         Xstrdup_a(content_type, content_type, return NULL);
 489         g_strdown((gchar *)content_type);
 490 #endif
 491
 492         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 493                 MimeViewerFactory *curfactory = cur->data;
 494                 gint i = 0;
 495
 496                 while (curfactory->content_types[i] != NULL) {
 497                         if(!fnmatch(curfactory->content_types[i], content_type, FNM_CASEFOLD)) {
 498                                 debug_print("%s\n", curfactory->content_types[i]);
 499                                 factory = curfactory;
 500                                 break;
 501                         }
 502                         i++;
 503                 }
 504                 if (factory != NULL)
 505                         break;
 506         }
 507         if (factory == NULL)
 508                 return NULL;
 509
 510         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 511                 MimeViewer *curviewer = cur->data;
 512
 513                 if (curviewer->factory == factory)
 514                         return curviewer;
 515         }
 516         viewer = factory->create_viewer();
 517         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 518                 GTK_WIDGET(viewer->get_widget(viewer)));
 519
 520         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 521
 522         return viewer;
 523 }
 524
 525 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 526 {
 527         gchar *content_type = NULL;
 528         MimeViewer *viewer = NULL;
 529
 530         if ((partinfo->type == MIMETYPE_APPLICATION) &&
 531             (!g_strcasecmp(partinfo->subtype, "octet-stream"))) {
 532                 const gchar *filename;
 533
 534                 filename = procmime_mimeinfo_get_parameter(partinfo, "name");
 535                 if (filename != NULL)
 536                         content_type = procmime_get_mime_type(filename);
 537         } else {
 538                 content_type = g_strdup_printf("%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
 539         }
 540
 541         if (content_type != NULL) {
 542                 viewer = get_viewer_for_content_type(mimeview, content_type);
 543                 g_free(content_type);
 544         }
 545
 546         return viewer;
 547 }
 548
 549 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 550 {
 551         MimeViewer *viewer;
 552
 553         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 554         if (viewer == NULL) {
 555                 if (mimeview->mimeviewer != NULL)
 556                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 557                 mimeview->mimeviewer = NULL;
 558                 return FALSE;
 559         }
 560
 561         if (mimeview->mimeviewer != viewer) {
 562                 if (mimeview->mimeviewer != NULL)
 563                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 564                 mimeview->mimeviewer = viewer;
 565                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 566         }
 567         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 568
 569         return TRUE;
 570 }
 571
 572 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 573 {
 574         TextView  *textview  = mimeview->textview;
 575
 576         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 577             (mimeview->type == type)) return;
 578
 579         switch (type) {
 580         case MIMEVIEW_TEXT:
 581                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 582                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 583                         GTK_WIDGET_PTR(textview)));
 584                 break;
 585         case MIMEVIEW_VIEWER:
 586                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 587                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 588                         GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer))));
 589                 break;
 590         default:
 591                 return;
 592         }
 593
 594         mimeview->type = type;
 595 }
 596
 597 void mimeview_clear(MimeView *mimeview)
 598 {
 599         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 600
 601         noticeview_hide(mimeview->siginfoview);
 602
 603         gtk_clist_clear(clist);
 604         textview_clear(mimeview->textview);
 605         if (mimeview->mimeviewer != NULL)
 606                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 607
 608         if (mimeview->mimeinfo != NULL)
 609                 procmime_mimeinfo_free_all(mimeview->mimeinfo);
 610         mimeview->mimeinfo = NULL;
 611
 612         mimeview->opened = NULL;
 613
 614         g_free(mimeview->file);
 615         mimeview->file = NULL;
 616
 617         icon_list_clear(mimeview);
 618 }
 619
 620 static void check_signature_cb(GtkWidget *widget, gpointer user_data);
 621 static void display_full_info_cb(GtkWidget *widget, gpointer user_data);
 622
 623 static void update_signature_noticeview(MimeView *mimeview, MimeInfo *mimeinfo)
 624 {
 625         gchar *text = NULL, *button_text = NULL;
 626         GtkSignalFunc func = NULL;
 627         StockPixmap icon = STOCK_PIXMAP_PRIVACY_SIGNED;
 628
 629         g_return_if_fail(mimeview != NULL);
 630         g_return_if_fail(mimeinfo != NULL);
 631
 632         switch (privacy_mimeinfo_get_sig_status(mimeinfo)) {
 633         case SIGNATURE_UNCHECKED:
 634                 button_text = _("Check");
 635                 func = check_signature_cb;
 636                 icon = STOCK_PIXMAP_PRIVACY_SIGNED;
 637                 break;
 638         case SIGNATURE_OK:
 639                 button_text = _("Full info");
 640                 func = display_full_info_cb;
 641                 icon = STOCK_PIXMAP_PRIVACY_PASSED;
 642                 break;
 643         case SIGNATURE_WARN:
 644                 button_text = _("Full info");
 645                 func = display_full_info_cb;
 646                 icon = STOCK_PIXMAP_PRIVACY_WARN;
 647                 break;
 648         case SIGNATURE_INVALID:
 649                 button_text = _("Full info");
 650                 func = display_full_info_cb;
 651                 icon = STOCK_PIXMAP_PRIVACY_FAILED;
 652                 break;
 653         case SIGNATURE_CHECK_FAILED:
 654                 button_text = _("Check again");
 655                 func = check_signature_cb;
 656                 icon = STOCK_PIXMAP_PRIVACY_UNKNOWN;
 657         default:
 658                 break;
 659         }
 660         text = privacy_mimeinfo_sig_info_short(mimeinfo);
 661         noticeview_set_text(mimeview->siginfoview, text);
 662         g_free(text);
 663         noticeview_set_button_text(mimeview->siginfoview, button_text);
 664         noticeview_set_button_press_callback(
 665                 mimeview->siginfoview,
 666                 func,
 667                 (gpointer) mimeview);
 668         noticeview_set_icon(mimeview->siginfoview, icon);
 669 }
 670
 671 static void check_signature_cb(GtkWidget *widget, gpointer user_data)
 672 {
 673         MimeView *mimeview = (MimeView *) user_data;
 674         MimeInfo *mimeinfo = mimeview->siginfo;
 675
 676         privacy_mimeinfo_check_signature(mimeinfo);
 677         update_signature_noticeview(mimeview, mimeview->siginfo);
 678 }
 679
 680 static void display_full_info_cb(GtkWidget *widget, gpointer user_data)
 681 {
 682         MimeView *mimeview = (MimeView *) user_data;
 683         gchar *siginfo;
 684
 685         siginfo = privacy_mimeinfo_sig_info_full(mimeview->siginfo);
 686         textview_set_text(mimeview->textview, siginfo);
 687         g_free(siginfo);
 688         noticeview_set_button_text(mimeview->siginfoview, NULL);
 689 }
 690
 691 static void update_signature_info(MimeView *mimeview, MimeInfo *selected)
 692 {
 693         MimeInfo *siginfo;
 694
 695         g_return_if_fail(mimeview != NULL);
 696         g_return_if_fail(selected != NULL);
 697
 698         siginfo = selected;
 699         while (siginfo != NULL) {
 700                 if (privacy_mimeinfo_is_signed(siginfo))
 701                         break;
 702                 siginfo = procmime_mimeinfo_parent(siginfo);
 703         }
 704         mimeview->siginfo = siginfo;
 705
 706         if (siginfo == NULL) {
 707                 noticeview_hide(mimeview->siginfoview);
 708                 return;
 709         }
 710
 711         update_signature_noticeview(mimeview, siginfo);
 712         noticeview_show(mimeview->siginfoview);
 713 }
 714
 715 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 716                               MimeView *mimeview)
 717 {
 718         MimeInfo *partinfo;
 719
 720         if (mimeview->opened == node) return;
 721         mimeview->opened = node;
 722         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 723
 724         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 725         if (!partinfo) return;
 726
 727         /* ungrab the mouse event */
 728         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 729                 gtk_grab_remove(GTK_WIDGET(ctree));
 730                 if (gdk_pointer_is_grabbed())
 731                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 732         }
 733
 734         mimeview->textview->default_text = FALSE;
 735
 736         update_signature_info(mimeview, partinfo);
 737
 738         if (!mimeview_show_part(mimeview, partinfo)) {
 739                 switch (partinfo->type) {
 740                 case MIMETYPE_TEXT:
 741                 case MIMETYPE_MESSAGE:
 742                 case MIMETYPE_MULTIPART:
 743                         mimeview_show_message_part(mimeview, partinfo);
 744
 745                         break;
 746                 default:
 747                         mimeview->textview->default_text = TRUE;
 748                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 749                         textview_show_mime_part(mimeview->textview, partinfo);
 750                         break;
 751                 }
 752         }
 753 }
 754
 755 static void mimeview_start_drag(GtkWidget *widget, gint button,
 756                                 GdkEvent *event, MimeView *mimeview)
 757 {
 758         GdkDragContext *context;
 759         MimeInfo *partinfo;
 760
 761         g_return_if_fail(mimeview != NULL);
 762
 763         partinfo = mimeview_get_selected_part(mimeview);
 764         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 765
 766         context = gtk_drag_begin(widget, mimeview->target_list,
 767                                  GDK_ACTION_COPY, button, event);
 768         gtk_drag_set_icon_default(context);
 769 }
 770
 771 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 772                                     MimeView *mimeview)
 773 {
 774         GtkCList *clist = GTK_CLIST(widget);
 775         gint row, column;
 776
 777         if (!event) return FALSE;
 778
 779         if (event->button == 2 || event->button == 3) {
 780                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 781                                                   &row, &column))
 782                         return FALSE;
 783                 gtk_clist_unselect_all(clist);
 784                 gtk_clist_select_row(clist, row, column);
 785                 gtkut_clist_set_focus_row(clist, row);
 786         }
 787         part_button_pressed(mimeview, event, mimeview_get_selected_part(mimeview));
 788
 789         return TRUE;
 790 }
 791
 792 static void part_button_pressed(MimeView *mimeview, GdkEventButton *event,
 793                                 MimeInfo *partinfo)
 794 {
 795         if (event->button == 2 ||
 796             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 797                 /* call external program for image, audio or html */
 798                 mimeview_launch(mimeview);
 799         } else if (event->button == 3) {
 800                 if (partinfo && (partinfo->type == MIMETYPE_TEXT ||
 801                                  partinfo->type == MIMETYPE_MESSAGE ||
 802                                  partinfo->type == MIMETYPE_IMAGE ||
 803                                  partinfo->type == MIMETYPE_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->type == MIMETYPE_APPLICATION &&
 811                     !g_strcasecmp(partinfo->subtype, "octet-stream"))
 812                         menu_set_sensitive(mimeview->popupfactory,
 813                                            "/Open", FALSE);
 814                 else
 815                         menu_set_sensitive(mimeview->popupfactory,
 816                                            "/Open", TRUE);
 817
 818                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
 819                                     "pop_partinfo", partinfo);
 820
 821                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 822                                NULL, NULL, NULL, NULL,
 823                                event->button, event->time);
 824         }
 825 }
 826
 827
 828 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 829 {
 830         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 831 }
 832
 833 #define BREAK_ON_MODIFIER_KEY() \
 834         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 835
 836 #define KEY_PRESS_EVENT_STOP() \
 837         if (gtk_signal_n_emissions_by_name \
 838                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 839                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 840                                              "key_press_event"); \
 841         }
 842
 843 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 844                                  MimeView *mimeview)
 845 {
 846         SummaryView *summaryview;
 847         GtkCTree *ctree = GTK_CTREE(widget);
 848         GtkCTreeNode *node;
 849
 850         if (!event) return FALSE;
 851         if (!mimeview->opened) return FALSE;
 852
 853         switch (event->keyval) {
 854         case GDK_space:
 855                 if (textview_scroll_page(mimeview->textview, FALSE))
 856                         return TRUE;
 857
 858                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 859                 if (node) {
 860                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 861                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 862                         return TRUE;
 863                 }
 864                 break;
 865         case GDK_BackSpace:
 866                 textview_scroll_page(mimeview->textview, TRUE);
 867                 return TRUE;
 868         case GDK_Return:
 869                 textview_scroll_one_line(mimeview->textview,
 870                                          (event->state & GDK_MOD1_MASK) != 0);
 871                 return TRUE;
 872         case GDK_n:
 873         case GDK_N:
 874                 BREAK_ON_MODIFIER_KEY();
 875                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 876                 KEY_PRESS_EVENT_STOP();
 877
 878                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 879                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 880                 return TRUE;
 881         case GDK_p:
 882         case GDK_P:
 883                 BREAK_ON_MODIFIER_KEY();
 884                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 885                 KEY_PRESS_EVENT_STOP();
 886
 887                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 888                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 889                 return TRUE;
 890         case GDK_y:
 891                 BREAK_ON_MODIFIER_KEY();
 892                 KEY_PRESS_EVENT_STOP();
 893                 mimeview_save_as(mimeview);
 894                 return TRUE;
 895         case GDK_t:
 896                 BREAK_ON_MODIFIER_KEY();
 897                 KEY_PRESS_EVENT_STOP();
 898                 mimeview_display_as_text(mimeview);
 899                 return TRUE;
 900         case GDK_l:
 901                 BREAK_ON_MODIFIER_KEY();
 902                 KEY_PRESS_EVENT_STOP();
 903                 mimeview_launch(mimeview);
 904                 return TRUE;
 905         default:
 906                 break;
 907         }
 908
 909         if (!mimeview->messageview->mainwin) return FALSE;
 910         summaryview = mimeview->messageview->mainwin->summaryview;
 911         summary_pass_key_press_event(summaryview, event);
 912         return TRUE;
 913 }
 914
 915 static void mimeview_drag_data_get(GtkWidget        *widget,
 916                                    GdkDragContext   *drag_context,
 917                                    GtkSelectionData *selection_data,
 918                                    guint             info,
 919                                    guint             time,
 920                                    MimeView         *mimeview)
 921 {
 922         gchar *filename, *uriname;
 923         MimeInfo *partinfo;
 924
 925         if (!mimeview->opened) return;
 926         if (!mimeview->file) return;
 927
 928         partinfo = mimeview_get_selected_part(mimeview);
 929         if (!partinfo) return;
 930         if (!partinfo->filename && !partinfo->name) return;
 931
 932         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 933         filename = g_basename(filename);
 934         if (*filename == '\0') return;
 935
 936         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 937                                filename, NULL);
 938
 939         if (procmime_get_part(filename, partinfo) < 0)
 940                 alertpanel_error
 941                         (_("Can't save the part of multipart message."));
 942
 943         uriname = g_strconcat("file:/", filename, NULL);
 944         gtk_selection_data_set(selection_data, selection_data->target, 8,
 945                                uriname, strlen(uriname));
 946
 947         g_free(uriname);
 948         g_free(filename);
 949 }
 950
 951 static void mimeview_save_all(MimeView *mimeview)
 952 {
 953         gchar *dirname;
 954         gchar *defname = NULL;
 955         MimeInfo *attachment;
 956         gchar buf[1024];
 957
 958         if (!mimeview->opened) return;
 959         if (!mimeview->file) return;
 960
 961         attachment = mimeview->mimeinfo;
 962         g_return_if_fail(attachment != NULL);
 963
 964         dirname = filesel_select_file(_("Save as"), defname);
 965         if (!dirname) return;
 966
 967         if (!is_dir_exist (dirname)) {
 968                 alertpanel_error(_("`%s' is not a directory."),
 969                                  dirname);
 970                 g_free (dirname);
 971                 return;
 972         }
 973
 974         { /* add a / after the dirname, in case the user didn't */
 975                 gchar *dirname_tmp = NULL;
 976                 int dirname_last_char = strlen (dirname) - 1;
 977
 978                 if (dirname[dirname_last_char] != G_DIR_SEPARATOR) {
 979                         dirname_tmp = g_strconcat (dirname, G_DIR_SEPARATOR_S, NULL);
 980                         g_free (dirname);
 981                         dirname = dirname_tmp;
 982                 }
 983         }
 984
 985         /* for each attachment, extract it in the selected dir. */
 986         while (attachment != NULL) {
 987                 if (attachment->type != MIMETYPE_MESSAGE &&
 988                     attachment->type != MIMETYPE_MULTIPART &&
 989                     (procmime_mimeinfo_get_parameter(attachment, "name") ||
 990                      procmime_mimeinfo_get_parameter(attachment, "filename"))) {
 991                         static guint subst_cnt = 1;
 992                         gchar *attachdir;
 993                         gchar *attachname = g_strdup(get_part_name(attachment));
 994                         AlertValue aval = G_ALERTDEFAULT;
 995                         gchar *res;
 996
 997                         if (!attachname || !strlen(attachname))
 998                                 attachname = g_strdup_printf("noname.%d",subst_cnt++);
 999                         subst_chars(attachname, ":?*&|<>\t\r\n", '_');
1000                         g_snprintf(buf, sizeof(buf), "%s%s",
1001                                    dirname,
1002                                    (attachname[0] == G_DIR_SEPARATOR)
1003                                    ? &attachname[1]
1004                                    : attachname);
1005                         subst_chars(buf, "/\\", G_DIR_SEPARATOR);
1006                         attachdir = g_dirname(buf);
1007                         make_dir_hier(attachdir);
1008                         g_free(attachdir);
1009
1010                         if (is_file_exist(buf)) {
1011                                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
1012                                                       attachname);
1013                                 aval = alertpanel(_("Overwrite"), res, _("OK"),
1014                                                   _("Cancel"), NULL);
1015                                 g_free(res);
1016                         }
1017                         g_free(attachname);
1018
1019                         if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, attachment) < 0))
1020                                 alertpanel_error(_("Can't save the part of multipart message."));
1021                 }
1022                 attachment = procmime_mimeinfo_next(attachment);
1023         }
1024 }
1025
1026 static void mimeview_display_as_text(MimeView *mimeview)
1027 {
1028         MimeInfo *partinfo;
1029
1030         if (!mimeview->opened) return;
1031
1032         partinfo = mimeview_get_selected_part(mimeview);
1033         if (!partinfo)  {
1034                 partinfo = (MimeInfo *) gtk_object_get_data
1035                         (GTK_OBJECT(mimeview->popupmenu),
1036                          "pop_partinfo");
1037                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1038                                     "pop_partinfo", NULL);
1039
1040         }
1041         g_return_if_fail(partinfo != NULL);
1042         mimeview_show_message_part(mimeview, partinfo);
1043 }
1044
1045 static void mimeview_save_as(MimeView *mimeview)
1046 {
1047         gchar *filename;
1048         gchar *defname = NULL;
1049         MimeInfo *partinfo;
1050         gchar *res;
1051         const gchar *partname = NULL;
1052
1053         if (!mimeview->opened) return;
1054         if (!mimeview->file) return;
1055
1056         partinfo = mimeview_get_selected_part(mimeview);
1057         if (!partinfo) {
1058                 partinfo = (MimeInfo *) gtk_object_get_data
1059                         (GTK_OBJECT(mimeview->popupmenu),
1060                          "pop_partinfo");
1061                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1062                                     "pop_partinfo", NULL);
1063         }
1064         g_return_if_fail(partinfo != NULL);
1065
1066         if ((partname = procmime_mimeinfo_get_parameter(partinfo, "name")) != NULL) {
1067                 Xstrdup_a(defname, partname, return);
1068                 subst_for_filename(defname);
1069         }
1070
1071         filename = filesel_select_file(_("Save as"), defname);
1072         if (!filename) return;
1073         if (is_file_exist(filename)) {
1074                 AlertValue aval;
1075                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
1076                                       filename);
1077                 aval = alertpanel(_("Overwrite"), res, _("OK"),
1078                                   _("Cancel"), NULL);
1079                 g_free(res);
1080                 if (G_ALERTDEFAULT != aval) return;
1081         }
1082
1083         if (procmime_get_part(filename, partinfo) < 0)
1084                 alertpanel_error
1085                         (_("Can't save the part of multipart message."));
1086 }
1087
1088 static void mimeview_launch(MimeView *mimeview)
1089 {
1090         MimeInfo *partinfo;
1091         gchar *filename;
1092
1093         if (!mimeview->opened) return;
1094         if (!mimeview->file) return;
1095
1096         partinfo = mimeview_get_selected_part(mimeview);
1097         if (!partinfo) {
1098                 partinfo = (MimeInfo *) gtk_object_get_data
1099                         (GTK_OBJECT(mimeview->popupmenu),
1100                          "pop_partinfo");
1101                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1102                                     "pop_partinfo", NULL);
1103         }
1104         g_return_if_fail(partinfo != NULL);
1105
1106         filename = procmime_get_tmp_file_name(partinfo);
1107
1108         if (procmime_get_part(filename, partinfo) < 0)
1109                 alertpanel_error
1110                         (_("Can't save the part of multipart message."));
1111         else
1112                 mimeview_view_file(filename, partinfo, NULL);
1113
1114         g_free(filename);
1115 }
1116
1117 static void mimeview_open_with(MimeView *mimeview)
1118 {
1119         MimeInfo *partinfo;
1120         gchar *filename;
1121         gchar *cmd;
1122
1123         if (!mimeview->opened) return;
1124         if (!mimeview->file) return;
1125
1126         partinfo = mimeview_get_selected_part(mimeview);
1127         if (!partinfo) {
1128                 partinfo = (MimeInfo *) gtk_object_get_data
1129                         (GTK_OBJECT(mimeview->popupmenu),
1130                          "pop_partinfo");
1131                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1132                                     "pop_partinfo", NULL);
1133         }
1134         g_return_if_fail(partinfo != NULL);
1135
1136         filename = procmime_get_tmp_file_name(partinfo);
1137
1138         if (procmime_get_part(filename, partinfo) < 0) {
1139                 alertpanel_error
1140                         (_("Can't save the part of multipart message."));
1141                 g_free(filename);
1142                 return;
1143         }
1144
1145         if (!prefs_common.mime_open_cmd_history)
1146                 prefs_common.mime_open_cmd_history =
1147                         add_history(NULL, prefs_common.mime_open_cmd);
1148
1149         cmd = input_dialog_combo
1150                 (_("Open with"),
1151                  _("Enter the command line to open file:\n"
1152                    "(`%s' will be replaced with file name)"),
1153                  prefs_common.mime_open_cmd,
1154                  prefs_common.mime_open_cmd_history,
1155                  TRUE);
1156         if (cmd) {
1157                 mimeview_view_file(filename, partinfo, cmd);
1158                 g_free(prefs_common.mime_open_cmd);
1159                 prefs_common.mime_open_cmd = cmd;
1160                 prefs_common.mime_open_cmd_history =
1161                         add_history(prefs_common.mime_open_cmd_history, cmd);
1162         }
1163
1164         g_free(filename);
1165 }
1166
1167 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1168                                const gchar *cmdline)
1169 {
1170         static gchar *default_image_cmdline = "display '%s'";
1171         static gchar *default_audio_cmdline = "play '%s'";
1172         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1173         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1174         gchar buf[1024];
1175         gchar m_buf[1024];
1176         const gchar *cmd;
1177         const gchar *def_cmd;
1178         const gchar *p;
1179
1180         if (cmdline) {
1181                 cmd = cmdline;
1182                 def_cmd = NULL;
1183         } else if (MIMETYPE_APPLICATION == partinfo->type &&
1184                    !g_strcasecmp(partinfo->subtype, "octet-stream")) {
1185                 return;
1186         } else if (MIMETYPE_IMAGE == partinfo->type) {
1187                 cmd = prefs_common.mime_image_viewer;
1188                 def_cmd = default_image_cmdline;
1189         } else if (MIMETYPE_AUDIO == partinfo->type) {
1190                 cmd = prefs_common.mime_audio_player;
1191                 def_cmd = default_audio_cmdline;
1192         } else if (MIMETYPE_TEXT == partinfo->type && !strcmp(partinfo->subtype, "html")) {
1193                 cmd = prefs_common.uri_cmd;
1194                 def_cmd = default_html_cmdline;
1195         } else {
1196                 gchar *content_type;
1197
1198                 content_type = g_strdup_printf("%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
1199                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1200                            content_type, "%s");
1201                 g_free(content_type);
1202                 cmd = m_buf;
1203                 def_cmd = NULL;
1204         }
1205
1206         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1207             !strchr(p + 2, '%'))
1208                 g_snprintf(buf, sizeof(buf), cmd, filename);
1209         else {
1210                 if (cmd)
1211                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1212                 if (def_cmd)
1213                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1214                 else
1215                         return;
1216         }
1217
1218         execute_command_line(buf, TRUE);
1219 }
1220
1221 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1222 {
1223         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1224 }
1225
1226 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1227 {
1228         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1229 }
1230
1231 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1232 {
1233         GSList *mimeview_list, *viewer_list;
1234
1235         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1236                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1237
1238                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1239                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1240                         mimeview->mimeviewer = NULL;
1241                 }
1242
1243                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1244                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1245
1246                         mimeviewer->destroy_viewer(mimeviewer);
1247                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1248                 }
1249         }
1250
1251         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1252 }
1253
1254 static gboolean icon_clicked_cb (GtkWidget *button, GdkEventButton *event, MimeView *mimeview)
1255 {
1256         gint      num;
1257         MimeInfo *partinfo;
1258
1259         num      = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(button), "icon_number"));
1260         partinfo = gtk_object_get_data(GTK_OBJECT(button), "partinfo");
1261
1262         icon_selected(mimeview, num, partinfo);
1263         gtk_widget_grab_focus(button);
1264         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1265                 toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1266                 if (event->button == 2 || event->button == 3)
1267                         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(button),
1268                                                      TRUE);
1269         } else {
1270                 gtk_signal_emit_stop_by_name(GTK_OBJECT(button), "button_press_event");
1271         }
1272
1273         part_button_pressed(mimeview, event, partinfo);
1274
1275         return TRUE;
1276 }
1277
1278 static void icon_selected (MimeView *mimeview, gint num, MimeInfo *partinfo)
1279 {
1280         GtkCTreeNode *node;
1281         node = gtk_ctree_find_by_row_data(GTK_CTREE(mimeview->ctree), NULL, partinfo);
1282         if (node)
1283                 gtk_ctree_select(GTK_CTREE(mimeview->ctree), node);
1284 }
1285
1286 #undef  KEY_PRESS_EVENT_STOP
1287 #define KEY_PRESS_EVENT_STOP() \
1288         if (gtk_signal_n_emissions_by_name \
1289                 (GTK_OBJECT(button), "key_press_event") > 0) { \
1290                 gtk_signal_emit_stop_by_name(GTK_OBJECT(button), \
1291                                              "key_press_event"); \
1292         }
1293 static gint icon_key_pressed(GtkWidget *button, GdkEventKey *event,
1294                              MimeView *mimeview)
1295 {
1296         gint          num;
1297         MimeInfo     *partinfo;
1298         SummaryView  *summaryview;
1299         TextView     *textview;
1300
1301         num      = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(button), "icon_number"));
1302         partinfo = gtk_object_get_data(GTK_OBJECT(button), "partinfo");
1303
1304         if (!event) return FALSE;
1305
1306         textview = mimeview->textview;
1307
1308         switch (event->keyval) {
1309         case GDK_space:
1310                 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1311                         /* stop the button being untoggled */
1312                         KEY_PRESS_EVENT_STOP();
1313                         if (textview_scroll_page(textview, FALSE))
1314                                 return TRUE;
1315
1316                         if (icon_list_select_by_number(mimeview, num + 1))
1317                                 return TRUE;
1318                 } else {
1319                         icon_selected(mimeview, num, partinfo);
1320                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1321                         return TRUE;
1322                 }
1323
1324                 break;
1325         case GDK_BackSpace:
1326                 textview_scroll_page(textview, TRUE);
1327                 return TRUE;
1328         case GDK_Return:
1329                 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1330                         KEY_PRESS_EVENT_STOP();
1331                         textview_scroll_one_line(textview,
1332                                                  (event->state & GDK_MOD1_MASK) != 0);
1333                         return TRUE;
1334                 } else {
1335                         icon_selected(mimeview, num, partinfo);
1336                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1337                         return TRUE;
1338                 }
1339
1340         case GDK_n:
1341         case GDK_N:
1342                 BREAK_ON_MODIFIER_KEY();
1343                 if (icon_list_select_by_number(mimeview, num + 1)) {
1344                         KEY_PRESS_EVENT_STOP();
1345                         return TRUE;
1346                 }
1347                 break;
1348
1349         case GDK_p:
1350         case GDK_P:
1351                 BREAK_ON_MODIFIER_KEY();
1352                 if (icon_list_select_by_number(mimeview, num - 1)) {
1353                         KEY_PRESS_EVENT_STOP();
1354                         return TRUE;
1355                 }
1356                 break;
1357
1358         case GDK_y:
1359                 BREAK_ON_MODIFIER_KEY();
1360                 KEY_PRESS_EVENT_STOP();
1361                 mimeview_save_as(mimeview);
1362                 return TRUE;
1363         case GDK_t:
1364                 BREAK_ON_MODIFIER_KEY();
1365                 KEY_PRESS_EVENT_STOP();
1366                 mimeview_display_as_text(mimeview);
1367                 return TRUE;
1368         case GDK_l:
1369                 BREAK_ON_MODIFIER_KEY();
1370                 KEY_PRESS_EVENT_STOP();
1371                 mimeview_launch(mimeview);
1372                 return TRUE;
1373         default:
1374                 break;
1375         }
1376
1377         if (!mimeview->messageview->mainwin) return FALSE;
1378         summaryview = mimeview->messageview->mainwin->summaryview;
1379         summary_pass_key_press_event(summaryview, event);
1380         return TRUE;
1381 }
1382
1383 static void toggle_icon(GtkToggleButton *button, MimeView *mimeview)
1384 {
1385         GList *child;
1386
1387         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1388         for (; child != NULL; child = g_list_next(child)) {
1389                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1390                     GTK_TOGGLE_BUTTON(child->data) != button &&
1391                     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(child->data)))
1392                         gtk_toggle_button_set_active
1393                                 (GTK_TOGGLE_BUTTON(child->data),
1394                                  FALSE);
1395         }
1396 }
1397
1398 static void icon_list_append_icon (MimeView *mimeview, MimeInfo *mimeinfo)
1399 {
1400         GtkWidget *pixmap;
1401         GtkWidget *vbox;
1402         GtkWidget *button;
1403         gchar *tip;
1404         gchar *desc = NULL;
1405         StockPixmap stockp;
1406
1407         vbox = mimeview->icon_vbox;
1408         mimeview->icon_count++;
1409         button = gtk_toggle_button_new();
1410         gtk_button_set_relief(GTK_BUTTON(button), GTK_RELIEF_NONE);
1411         gtk_object_set_data(GTK_OBJECT(button), "icon_number",
1412                 GINT_TO_POINTER(mimeview->icon_count));
1413         gtk_object_set_data(GTK_OBJECT(button), "partinfo",
1414                 mimeinfo);
1415
1416         switch (mimeinfo->type) {
1417
1418         case MIMETYPE_TEXT:
1419                 if (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "html"))
1420                         stockp = STOCK_PIXMAP_MIME_TEXT_HTML;
1421                 else if  (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "enriched"))
1422                         stockp = STOCK_PIXMAP_MIME_TEXT_ENRICHED;
1423                 else
1424                         stockp = STOCK_PIXMAP_MIME_TEXT_PLAIN;
1425                 break;
1426         case MIMETYPE_MESSAGE:
1427                 stockp = STOCK_PIXMAP_MIME_MESSAGE;
1428                 break;
1429         case MIMETYPE_APPLICATION:
1430                 stockp = STOCK_PIXMAP_MIME_APPLICATION;
1431                 break;
1432         case MIMETYPE_IMAGE:
1433                 stockp = STOCK_PIXMAP_MIME_IMAGE;
1434                 break;
1435         case MIMETYPE_AUDIO:
1436                 stockp = STOCK_PIXMAP_MIME_AUDIO;
1437                 break;
1438         default:
1439                 stockp = STOCK_PIXMAP_MIME_UNKNOWN;
1440                 break;
1441         }
1442
1443         pixmap = stock_pixmap_widget(mimeview->mainwin->window, stockp);
1444         gtk_container_add(GTK_CONTAINER(button), pixmap);
1445
1446         if (!desc) {
1447                 if (prefs_common.attach_desc)
1448                         desc = get_part_description(mimeinfo);
1449                 else
1450                         desc = get_part_name(mimeinfo);
1451         }
1452
1453         if (desc && *desc)
1454                 tip = g_strdup_printf("%s\n%s/%s\n%s", desc,
1455                                 procmime_get_type_str(mimeinfo->type),
1456                                 mimeinfo->subtype,
1457                                 to_human_readable(mimeinfo->length));
1458         else
1459                 tip = g_strdup_printf("%s/%s\n%s",
1460                                 procmime_get_type_str(mimeinfo->type),
1461                                 mimeinfo->subtype,
1462                                 to_human_readable(mimeinfo->length));
1463
1464         gtk_tooltips_set_tip(mimeview->tooltips, button, tip, NULL);
1465         g_free(tip);
1466         gtk_widget_show_all(button);
1467         gtk_signal_connect(GTK_OBJECT(button), "button_press_event",
1468                            GTK_SIGNAL_FUNC(icon_clicked_cb), mimeview);
1469         gtk_signal_connect(GTK_OBJECT(button), "key_press_event",
1470                            GTK_SIGNAL_FUNC(icon_key_pressed), mimeview);
1471         gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
1472
1473 }
1474
1475 static void icon_list_clear (MimeView *mimeview)
1476 {
1477         GList     *child;
1478         GtkAdjustment *adj;
1479
1480         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1481         for (; child != NULL; child = g_list_next(child)) {
1482                 gtkut_container_remove(GTK_CONTAINER(mimeview->icon_vbox),
1483                                        GTK_WIDGET(child->data));
1484         }
1485         mimeview->icon_count = 0;
1486         adj  = gtk_layout_get_vadjustment(GTK_LAYOUT(mimeview->icon_scroll));
1487         adj->value = adj->lower;
1488         gtk_signal_emit_by_name(GTK_OBJECT (adj), "value_changed");
1489 }
1490
1491 static void icon_list_toggle_by_mime_info(MimeView      *mimeview,
1492                                           MimeInfo      *mimeinfo)
1493 {
1494         GList *child;
1495
1496         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1497         for (; child != NULL; child = g_list_next(child)) {
1498                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1499                     gtk_object_get_data(GTK_OBJECT(child->data),
1500                                         "partinfo") == (gpointer)mimeinfo) {
1501                         toggle_icon(GTK_TOGGLE_BUTTON(child->data), mimeview);
1502                         gtk_toggle_button_set_active
1503                                 (GTK_TOGGLE_BUTTON(child->data), TRUE);
1504                 }
1505         }
1506 }
1507
1508 /*!
1509  *\brief        Used to 'click' the next or previous icon.
1510  *
1511  *\return       true if the icon 'number' exists and was selected.
1512  */
1513 static gboolean icon_list_select_by_number(MimeView     *mimeview,
1514                                            gint          number)
1515 {
1516         GList *child;
1517
1518         if (number == 0) return FALSE;
1519         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1520         for (; child != NULL; child = g_list_next(child)) {
1521                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1522                     GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(child->data),
1523                                         "icon_number")) == number) {
1524                         icon_selected(mimeview, number,
1525                                       (MimeInfo*)gtk_object_get_data(GTK_OBJECT(child->data),
1526                                                                      "partinfo"));
1527                         toggle_icon(GTK_TOGGLE_BUTTON(child->data), mimeview);
1528                         gtk_toggle_button_set_active
1529                                 (GTK_TOGGLE_BUTTON(child->data), TRUE);
1530                         gtk_widget_grab_focus(GTK_WIDGET(child->data));
1531
1532                         return TRUE;
1533                 }
1534         }
1535         return FALSE;
1536 }
1537
1538 static void icon_scroll_size_allocate_cb(GtkWidget *widget,
1539                                         GtkAllocation *size, MimeView *mimeview)
1540 {
1541         GtkAllocation *mainbox_size;
1542         GtkAllocation *vbox_size;
1543         GtkAllocation *layout_size;
1544         GtkAdjustment *adj;
1545
1546         adj = gtk_layout_get_vadjustment(GTK_LAYOUT(mimeview->icon_scroll));
1547
1548         mainbox_size = &mimeview->icon_mainbox->allocation;
1549         vbox_size = &mimeview->icon_vbox->allocation;
1550         layout_size = &mimeview->icon_scroll->allocation;
1551
1552         /* centralise the vbox */
1553         gtk_layout_move(GTK_LAYOUT(mimeview->icon_scroll), mimeview->icon_vbox,
1554                         (mainbox_size->width - vbox_size->width)/2, 0);
1555
1556         gtk_layout_set_size(GTK_LAYOUT(mimeview->icon_scroll),
1557                             GTK_LAYOUT(mimeview->icon_scroll)->width,
1558                             MAX(vbox_size->height, layout_size->height));
1559         adj->step_increment = 5;
1560 }
1561
1562 static void icon_list_create(MimeView *mimeview, MimeInfo *mimeinfo)
1563 {
1564         GtkRequisition size;
1565         gint           width;
1566         g_return_if_fail(mimeinfo != NULL);
1567
1568         while (mimeinfo != NULL) {
1569                 if (mimeinfo->type != MIMETYPE_MULTIPART)
1570                         icon_list_append_icon(mimeview, mimeinfo);
1571                 if (mimeinfo->node->children != NULL)
1572                         icon_list_create(mimeview, (MimeInfo *) mimeinfo->node->children->data);
1573                 mimeinfo = mimeinfo->node->next != NULL ? (MimeInfo *) mimeinfo->node->next->data : NULL;
1574         }
1575         gtk_widget_size_request(mimeview->icon_vbox, &size);
1576         width = size.width + 4;
1577         if (width > mimeview->icon_mainbox->requisition.width) {
1578                 gtk_widget_set_usize(mimeview->icon_mainbox,
1579                                      width, -1);
1580         }
1581
1582 }
1583
1584 static void mime_toggle_button_cb (GtkWidget *button, MimeView *mimeview)
1585 {
1586         gtk_widget_ref(button);
1587
1588         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1589                 gtk_arrow_set(GTK_ARROW(GTK_BIN(button)->child), GTK_ARROW_RIGHT,
1590                                         GTK_SHADOW_NONE);
1591                 gtk_widget_hide(mimeview->icon_mainbox);
1592                 gtk_widget_show(mimeview->ctree_mainbox);
1593                 gtk_paned_set_position(GTK_PANED(mimeview->paned), mimeview->oldsize);
1594
1595                 gtkut_container_remove(GTK_CONTAINER(mimeview->icon_mainbox),
1596                                         button);
1597                 gtk_box_pack_end(GTK_BOX(mimeview->ctree_mainbox),
1598                                    button, FALSE, FALSE, 0);
1599                 gtk_paned_set_gutter_size(GTK_PANED(mimeview->paned), 6);
1600         } else {
1601                 gtk_arrow_set(GTK_ARROW(GTK_BIN(button)->child), GTK_ARROW_LEFT,
1602                               GTK_SHADOW_NONE);
1603                 mimeview->oldsize = mimeview->ctree_mainbox->allocation.height;
1604                 gtk_widget_hide(mimeview->ctree_mainbox);
1605                 gtk_widget_show(mimeview->icon_mainbox);
1606                 gtk_paned_set_position(GTK_PANED(mimeview->paned), 0);
1607
1608                 gtkut_container_remove(GTK_CONTAINER(mimeview->ctree_mainbox),
1609                                         button);
1610                 gtk_box_pack_start(GTK_BOX(mimeview->icon_mainbox),
1611                                    button, FALSE, FALSE, 0);
1612                 gtk_box_reorder_child(GTK_BOX(button->parent), button, 0);
1613                 if (mimeview->opened)
1614                         icon_list_toggle_by_mime_info
1615                                 (mimeview, gtk_ctree_node_get_row_data(GTK_CTREE(mimeview->ctree),
1616                                                                        mimeview->opened));
1617
1618                 gtk_paned_set_gutter_size(GTK_PANED(mimeview->paned), 0);
1619         }
1620         gtk_widget_grab_focus(button);
1621         gtk_widget_unref(button);
1622
1623 }
1624
1625 void mimeview_update (MimeView *mimeview) {
1626         if (mimeview && mimeview->mimeinfo) {
1627                 icon_list_clear(mimeview);
1628                 icon_list_create(mimeview, mimeview->mimeinfo);
1629         }
1630 }