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                 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(mimeview->mime_toggle)))
 351                         gtk_widget_grab_focus(mimeview->ctree);
 352         }
 353 }
 354
 355 void mimeview_destroy(MimeView *mimeview)
 356 {
 357         GSList *cur;
 358
 359         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 360                 MimeViewer *viewer = (MimeViewer *) cur->data;
 361                 gtk_container_remove(GTK_CONTAINER(mimeview->mime_notebook),
 362                         GTK_WIDGET(viewer->get_widget(viewer)));
 363                 viewer->destroy_viewer(viewer);
 364         }
 365         g_slist_free(mimeview->viewers);
 366         gtk_target_list_unref(mimeview->target_list);
 367
 368         procmime_mimeinfo_free_all(mimeview->mimeinfo);
 369         g_free(mimeview->file);
 370         g_free(mimeview);
 371
 372         mimeviews = g_slist_remove(mimeviews, mimeview);
 373
 374 }
 375
 376 MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
 377 {
 378         return gtk_ctree_node_get_row_data
 379                 (GTK_CTREE(mimeview->ctree), mimeview->opened);
 380 }
 381
 382 static void mimeview_set_multipart_tree(MimeView *mimeview,
 383                                         MimeInfo *mimeinfo,
 384                                         GtkCTreeNode *parent)
 385 {
 386         GtkCTreeNode *node;
 387
 388         g_return_if_fail(mimeinfo != NULL);
 389
 390         while (mimeinfo != NULL) {
 391                 node = mimeview_append_part(mimeview, mimeinfo, parent);
 392
 393                 if (mimeinfo->node->children)
 394                         mimeview_set_multipart_tree(mimeview, (MimeInfo *) mimeinfo->node->children->data, node);
 395                 mimeinfo = mimeinfo->node->next != NULL ? (MimeInfo *) mimeinfo->node->next->data : NULL;
 396         }
 397 }
 398
 399 static gchar *get_part_name(MimeInfo *partinfo)
 400 {
 401         gchar *name;
 402
 403         name = g_hash_table_lookup(partinfo->parameters, "name");
 404         if(name == NULL)
 405                 name = "";
 406
 407         return name;
 408 }
 409
 410 static gchar *get_part_description(MimeInfo *partinfo)
 411 {
 412         if (partinfo->description)
 413                 return partinfo->description;
 414         else if (g_hash_table_lookup(partinfo->parameters, "name") != NULL)
 415                 return g_hash_table_lookup(partinfo->parameters, "name");
 416         else
 417                 return "";
 418 }
 419
 420 static GtkCTreeNode *mimeview_append_part(MimeView *mimeview,
 421                                           MimeInfo *partinfo,
 422                                           GtkCTreeNode *parent)
 423 {
 424         GtkCTree *ctree = GTK_CTREE(mimeview->ctree);
 425         GtkCTreeNode *node;
 426         static gchar content_type[64];
 427         gchar *str[N_MIMEVIEW_COLS];
 428
 429         if (partinfo->type != MIMETYPE_UNKNOWN && partinfo->subtype) {
 430                 g_snprintf(content_type, 64, "%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
 431         } else {
 432                 g_snprintf(content_type, 64, "UNKNOWN");
 433         }
 434
 435         str[COL_MIMETYPE] = content_type;
 436         str[COL_SIZE] = to_human_readable(partinfo->length);
 437         if (prefs_common.attach_desc)
 438                 str[COL_NAME] = get_part_description(partinfo);
 439         else
 440                 str[COL_NAME] = get_part_name(partinfo);
 441
 442         node = gtk_ctree_insert_node(ctree, parent, NULL, str, 0,
 443                                      NULL, NULL, NULL, NULL,
 444                                      FALSE, TRUE);
 445         gtk_ctree_node_set_row_data(ctree, node, partinfo);
 446
 447         return node;
 448 }
 449
 450 static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
 451 {
 452         FILE *fp;
 453         const gchar *fname;
 454
 455         if (!partinfo) return;
 456
 457         fname = mimeview->file;
 458         if (!fname) return;
 459
 460         if ((fp = fopen(fname, "rb")) == NULL) {
 461                 FILE_OP_ERROR(fname, "fopen");
 462                 return;
 463         }
 464
 465         if (fseek(fp, partinfo->offset, SEEK_SET) < 0) {
 466                 FILE_OP_ERROR(mimeview->file, "fseek");
 467                 fclose(fp);
 468                 return;
 469         }
 470
 471         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 472         textview_show_part(mimeview->textview, partinfo, fp);
 473
 474         fclose(fp);
 475 }
 476
 477 static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
 478 {
 479         GSList *cur;
 480         MimeViewerFactory *factory = NULL;
 481         MimeViewer *viewer = NULL;
 482
 483 /*
 484  * FNM_CASEFOLD is a GNU extension
 485  * if its not defined copy the string to the stack and
 486  * convert the copy to lower case
 487  */
 488 #ifndef FNM_CASEFOLD
 489 #define FNM_CASEFOLD 0
 490         Xstrdup_a(content_type, content_type, return NULL);
 491         g_strdown((gchar *)content_type);
 492 #endif
 493
 494         for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
 495                 MimeViewerFactory *curfactory = cur->data;
 496                 gint i = 0;
 497
 498                 while (curfactory->content_types[i] != NULL) {
 499                         debug_print("%s\n", curfactory->content_types[i]);
 500                         if(!fnmatch(curfactory->content_types[i], content_type, FNM_CASEFOLD)) {
 501                                 factory = curfactory;
 502                                 break;
 503                         }
 504                         i++;
 505                 }
 506                 if (factory != NULL)
 507                         break;
 508         }
 509         if (factory == NULL)
 510                 return NULL;
 511
 512         for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
 513                 MimeViewer *curviewer = cur->data;
 514
 515                 if (curviewer->factory == factory)
 516                         return curviewer;
 517         }
 518         viewer = factory->create_viewer();
 519         gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
 520                 GTK_WIDGET(viewer->get_widget(viewer)));
 521
 522         mimeview->viewers = g_slist_append(mimeview->viewers, viewer);
 523
 524         return viewer;
 525 }
 526
 527 static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
 528 {
 529         gchar *content_type = NULL;
 530         MimeViewer *viewer = NULL;
 531
 532         if ((partinfo->type == MIMETYPE_APPLICATION) &&
 533             (g_strcasecmp(partinfo->subtype, "octet-stream")) &&
 534             (partinfo->name != NULL)) {
 535                 content_type = procmime_get_mime_type(partinfo->name);
 536         } else {
 537                 content_type = g_strdup_printf("%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
 538         }
 539
 540         if (content_type != NULL) {
 541                 viewer = get_viewer_for_content_type(mimeview, content_type);
 542                 g_free(content_type);
 543         }
 544
 545         return viewer;
 546 }
 547
 548 static gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
 549 {
 550         MimeViewer *viewer;
 551
 552         viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
 553         if (viewer == NULL) {
 554                 if (mimeview->mimeviewer != NULL)
 555                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 556                 mimeview->mimeviewer = NULL;
 557                 return FALSE;
 558         }
 559
 560         if (mimeview->mimeviewer != viewer) {
 561                 if (mimeview->mimeviewer != NULL)
 562                         mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 563                 mimeview->mimeviewer = viewer;
 564                 mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
 565         }
 566         viewer->show_mimepart(viewer, mimeview->file, partinfo);
 567
 568         return TRUE;
 569 }
 570
 571 static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
 572 {
 573         TextView  *textview  = mimeview->textview;
 574
 575         if ((mimeview->type != MIMEVIEW_VIEWER) &&
 576             (mimeview->type == type)) return;
 577
 578         switch (type) {
 579         case MIMEVIEW_TEXT:
 580                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 581                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 582                         GTK_WIDGET_PTR(textview)));
 583                 break;
 584         case MIMEVIEW_VIEWER:
 585                 gtk_notebook_set_page(GTK_NOTEBOOK(mimeview->mime_notebook),
 586                         gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook),
 587                         GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer))));
 588                 break;
 589         default:
 590                 return;
 591         }
 592
 593         mimeview->type = type;
 594 }
 595
 596 void mimeview_clear(MimeView *mimeview)
 597 {
 598         GtkCList *clist = GTK_CLIST(mimeview->ctree);
 599
 600         noticeview_hide(mimeview->siginfoview);
 601
 602         gtk_clist_clear(clist);
 603         textview_clear(mimeview->textview);
 604         if (mimeview->mimeviewer != NULL)
 605                 mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
 606
 607         if (mimeview->mimeinfo != NULL)
 608                 procmime_mimeinfo_free_all(mimeview->mimeinfo);
 609         mimeview->mimeinfo = NULL;
 610
 611         mimeview->opened = NULL;
 612
 613         g_free(mimeview->file);
 614         mimeview->file = NULL;
 615
 616         icon_list_clear(mimeview);
 617 }
 618
 619 static void check_signature_cb(GtkWidget *widget, gpointer user_data);
 620
 621 static void update_signature_noticeview(MimeView *mimeview, MimeInfo *mimeinfo)
 622 {
 623         if (privacy_mimeinfo_is_signed(mimeinfo)) {
 624                 gchar *text = NULL, *button_text = NULL;
 625                 GtkSignalFunc func = NULL;
 626
 627                 switch (privacy_mimeinfo_get_sig_status(mimeinfo)) {
 628                 case SIGNATURE_UNCHECKED:
 629                         text = _("This part of the message has been signed");
 630                         button_text = _("Check");
 631                         func = check_signature_cb;
 632                         break;
 633                 case SIGNATURE_OK:
 634                 case SIGNATURE_WARN:
 635                         text = _("Signature is ok");
 636                         break;
 637                 case SIGNATURE_INVALID:
 638                         text = _("The signature of this part is invalid");
 639                         break;
 640                 case SIGNATURE_CHECK_FAILED:
 641                         text = _("Checking the signature failed");
 642                         button_text = _("Check again");
 643                         func = check_signature_cb;
 644                 default:
 645                         break;
 646                 }
 647                 noticeview_set_text(mimeview->siginfoview, text);
 648                 noticeview_set_button_text(mimeview->siginfoview, button_text);
 649                 noticeview_set_button_press_callback(
 650                         mimeview->siginfoview,
 651                         func,
 652                         (gpointer) mimeview);
 653                 noticeview_show(mimeview->siginfoview);
 654         } else {
 655                 noticeview_hide(mimeview->siginfoview);
 656         }
 657 }
 658
 659 static void check_signature_cb(GtkWidget *widget, gpointer user_data)
 660 {
 661         MimeView *mimeview = (MimeView *) user_data;
 662         MimeInfo *mimeinfo = mimeview_get_selected_part(mimeview);
 663
 664         privacy_mimeinfo_check_signature(mimeinfo);
 665         update_signature_noticeview(mimeview, mimeinfo);
 666 }
 667
 668 static void mimeview_selected(GtkCTree *ctree, GtkCTreeNode *node, gint column,
 669                               MimeView *mimeview)
 670 {
 671         MimeInfo *partinfo;
 672
 673         if (mimeview->opened == node) return;
 674         mimeview->opened = node;
 675         gtk_ctree_node_moveto(ctree, node, -1, 0.5, 0);
 676
 677         partinfo = gtk_ctree_node_get_row_data(ctree, node);
 678         if (!partinfo) return;
 679
 680         /* ungrab the mouse event */
 681         if (GTK_WIDGET_HAS_GRAB(ctree)) {
 682                 gtk_grab_remove(GTK_WIDGET(ctree));
 683                 if (gdk_pointer_is_grabbed())
 684                         gdk_pointer_ungrab(GDK_CURRENT_TIME);
 685         }
 686
 687         mimeview->textview->default_text = FALSE;
 688
 689         update_signature_noticeview(mimeview, partinfo);
 690
 691         if (!mimeview_show_part(mimeview, partinfo)) {
 692                 switch (partinfo->type) {
 693                 case MIMETYPE_TEXT:
 694                 case MIMETYPE_MESSAGE:
 695                 case MIMETYPE_MULTIPART:
 696                         mimeview_show_message_part(mimeview, partinfo);
 697
 698                         break;
 699                 default:
 700                         mimeview->textview->default_text = TRUE;
 701                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
 702                         textview_show_mime_part(mimeview->textview, partinfo);
 703                         break;
 704                 }
 705         }
 706 }
 707
 708 static void mimeview_start_drag(GtkWidget *widget, gint button,
 709                                 GdkEvent *event, MimeView *mimeview)
 710 {
 711         GdkDragContext *context;
 712         MimeInfo *partinfo;
 713
 714         g_return_if_fail(mimeview != NULL);
 715
 716         partinfo = mimeview_get_selected_part(mimeview);
 717         if (partinfo->filename == NULL && partinfo->name == NULL) return;
 718
 719         context = gtk_drag_begin(widget, mimeview->target_list,
 720                                  GDK_ACTION_COPY, button, event);
 721         gtk_drag_set_icon_default(context);
 722 }
 723
 724 static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
 725                                     MimeView *mimeview)
 726 {
 727         GtkCList *clist = GTK_CLIST(widget);
 728         gint row, column;
 729
 730         if (!event) return FALSE;
 731
 732         if (event->button == 2 || event->button == 3) {
 733                 if (!gtk_clist_get_selection_info(clist, event->x, event->y,
 734                                                   &row, &column))
 735                         return FALSE;
 736                 gtk_clist_unselect_all(clist);
 737                 gtk_clist_select_row(clist, row, column);
 738                 gtkut_clist_set_focus_row(clist, row);
 739         }
 740         part_button_pressed(mimeview, event, mimeview_get_selected_part(mimeview));
 741
 742         return TRUE;
 743 }
 744
 745 static void part_button_pressed(MimeView *mimeview, GdkEventButton *event,
 746                                 MimeInfo *partinfo)
 747 {
 748         if (event->button == 2 ||
 749             (event->button == 1 && event->type == GDK_2BUTTON_PRESS)) {
 750                 /* call external program for image, audio or html */
 751                 mimeview_launch(mimeview);
 752         } else if (event->button == 3) {
 753                 if (partinfo && (partinfo->type == MIMETYPE_TEXT ||
 754                                  partinfo->type == MIMETYPE_MESSAGE ||
 755                                  partinfo->type == MIMETYPE_IMAGE ||
 756                                  partinfo->type == MIMETYPE_MULTIPART))
 757                         menu_set_sensitive(mimeview->popupfactory,
 758                                            "/Display as text", FALSE);
 759                 else
 760                         menu_set_sensitive(mimeview->popupfactory,
 761                                            "/Display as text", TRUE);
 762                 if (partinfo &&
 763                     partinfo->type == MIMETYPE_APPLICATION)
 764                         menu_set_sensitive(mimeview->popupfactory,
 765                                            "/Open", FALSE);
 766                 else
 767                         menu_set_sensitive(mimeview->popupfactory,
 768                                            "/Open", TRUE);
 769
 770                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
 771                                     "pop_partinfo", partinfo);
 772
 773                 gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
 774                                NULL, NULL, NULL, NULL,
 775                                event->button, event->time);
 776         }
 777 }
 778
 779
 780 void mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
 781 {
 782         mimeview_key_pressed(mimeview->ctree, event, mimeview);
 783 }
 784
 785 #define BREAK_ON_MODIFIER_KEY() \
 786         if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break
 787
 788 #define KEY_PRESS_EVENT_STOP() \
 789         if (gtk_signal_n_emissions_by_name \
 790                 (GTK_OBJECT(ctree), "key_press_event") > 0) { \
 791                 gtk_signal_emit_stop_by_name(GTK_OBJECT(ctree), \
 792                                              "key_press_event"); \
 793         }
 794
 795 static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
 796                                  MimeView *mimeview)
 797 {
 798         SummaryView *summaryview;
 799         GtkCTree *ctree = GTK_CTREE(widget);
 800         GtkCTreeNode *node;
 801
 802         if (!event) return FALSE;
 803         if (!mimeview->opened) return FALSE;
 804
 805         switch (event->keyval) {
 806         case GDK_space:
 807                 if (textview_scroll_page(mimeview->textview, FALSE))
 808                         return TRUE;
 809
 810                 node = GTK_CTREE_NODE_NEXT(mimeview->opened);
 811                 if (node) {
 812                         gtk_sctree_unselect_all(GTK_SCTREE(ctree));
 813                         gtk_sctree_select(GTK_SCTREE(ctree), node);
 814                         return TRUE;
 815                 }
 816                 break;
 817         case GDK_BackSpace:
 818                 textview_scroll_page(mimeview->textview, TRUE);
 819                 return TRUE;
 820         case GDK_Return:
 821                 textview_scroll_one_line(mimeview->textview,
 822                                          (event->state & GDK_MOD1_MASK) != 0);
 823                 return TRUE;
 824         case GDK_n:
 825         case GDK_N:
 826                 BREAK_ON_MODIFIER_KEY();
 827                 if (!GTK_CTREE_NODE_NEXT(mimeview->opened)) break;
 828                 KEY_PRESS_EVENT_STOP();
 829
 830                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 831                                         GTK_SCROLL_STEP_FORWARD, 0.0);
 832                 return TRUE;
 833         case GDK_p:
 834         case GDK_P:
 835                 BREAK_ON_MODIFIER_KEY();
 836                 if (!GTK_CTREE_NODE_PREV(mimeview->opened)) break;
 837                 KEY_PRESS_EVENT_STOP();
 838
 839                 gtk_signal_emit_by_name(GTK_OBJECT(ctree), "scroll_vertical",
 840                                         GTK_SCROLL_STEP_BACKWARD, 0.0);
 841                 return TRUE;
 842         case GDK_y:
 843                 BREAK_ON_MODIFIER_KEY();
 844                 KEY_PRESS_EVENT_STOP();
 845                 mimeview_save_as(mimeview);
 846                 return TRUE;
 847         case GDK_t:
 848                 BREAK_ON_MODIFIER_KEY();
 849                 KEY_PRESS_EVENT_STOP();
 850                 mimeview_display_as_text(mimeview);
 851                 return TRUE;
 852         case GDK_l:
 853                 BREAK_ON_MODIFIER_KEY();
 854                 KEY_PRESS_EVENT_STOP();
 855                 mimeview_launch(mimeview);
 856                 return TRUE;
 857         default:
 858                 break;
 859         }
 860
 861         if (!mimeview->messageview->mainwin) return FALSE;
 862         summaryview = mimeview->messageview->mainwin->summaryview;
 863         summary_pass_key_press_event(summaryview, event);
 864         return TRUE;
 865 }
 866
 867 static void mimeview_drag_data_get(GtkWidget        *widget,
 868                                    GdkDragContext   *drag_context,
 869                                    GtkSelectionData *selection_data,
 870                                    guint             info,
 871                                    guint             time,
 872                                    MimeView         *mimeview)
 873 {
 874         gchar *filename, *uriname;
 875         MimeInfo *partinfo;
 876
 877         if (!mimeview->opened) return;
 878         if (!mimeview->file) return;
 879
 880         partinfo = mimeview_get_selected_part(mimeview);
 881         if (!partinfo) return;
 882         if (!partinfo->filename && !partinfo->name) return;
 883
 884         filename = partinfo->filename ? partinfo->filename : partinfo->name;
 885         filename = g_basename(filename);
 886         if (*filename == '\0') return;
 887
 888         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
 889                                filename, NULL);
 890
 891         if (procmime_get_part(filename, partinfo) < 0)
 892                 alertpanel_error
 893                         (_("Can't save the part of multipart message."));
 894
 895         uriname = g_strconcat("file:/", filename, NULL);
 896         gtk_selection_data_set(selection_data, selection_data->target, 8,
 897                                uriname, strlen(uriname));
 898
 899         g_free(uriname);
 900         g_free(filename);
 901 }
 902
 903 static void mimeview_save_all(MimeView *mimeview)
 904 {
 905         gchar *dirname;
 906         gchar *defname = NULL;
 907         MimeInfo *partinfo;
 908         MimeInfo *attachment;
 909         gchar buf[1024];
 910
 911         if (!mimeview->opened) return;
 912         if (!mimeview->file) return;
 913
 914         partinfo = mimeview_get_selected_part(mimeview);
 915         g_return_if_fail(partinfo != NULL);
 916
 917         dirname = filesel_select_file(_("Save as"), defname);
 918         if (!dirname) return;
 919
 920         if (!is_dir_exist (dirname)) {
 921                 alertpanel_error(_("`%s' is not a directory."),
 922                                  dirname);
 923                 g_free (dirname);
 924                 return;
 925         }
 926
 927         { /* add a / after the dirname, in case the user didn't */
 928                 gchar *dirname_tmp = NULL;
 929                 int dirname_last_char = strlen (dirname) - 1;
 930
 931                 if (dirname[dirname_last_char] != G_DIR_SEPARATOR) {
 932                         dirname_tmp = g_strconcat (dirname, G_DIR_SEPARATOR_S, NULL);
 933                         g_free (dirname);
 934                         dirname = dirname_tmp;
 935                 }
 936         }
 937
 938         /* return to first children */
 939         if (partinfo->node->parent->children == NULL) return;  /* multipart container? */
 940         attachment = partinfo->node->parent->children->next != NULL ?
 941             (MimeInfo *) partinfo->node->parent->children->next->data : NULL;
 942         /* for each attachment, extract it in the selected dir. */
 943         while (attachment != NULL) {
 944                 static guint subst_cnt = 1;
 945                 gchar *attachdir;
 946                 gchar *attachname = g_strdup(get_part_name(attachment));
 947                 AlertValue aval = G_ALERTDEFAULT;
 948                 gchar *res;
 949
 950                 if (!attachname || !strlen(attachname))
 951                         attachname = g_strdup_printf("noname.%d",subst_cnt++);
 952                 subst_chars(attachname, ":?*&|<>\t\r\n", '_');
 953                 g_snprintf(buf, sizeof(buf), "%s%s",
 954                            dirname,
 955                            (attachname[0] == G_DIR_SEPARATOR)
 956                            ? &attachname[1]
 957                            : attachname);
 958                 subst_chars(buf, "/\\", G_DIR_SEPARATOR);
 959                 attachdir = g_dirname(buf);
 960                 make_dir_hier(attachdir);
 961                 g_free(attachdir);
 962
 963                 if (is_file_exist(buf)) {
 964                         res = g_strdup_printf(_("Overwrite existing file '%s'?"),
 965                                               attachname);
 966                         aval = alertpanel(_("Overwrite"), res, _("OK"),
 967                                           _("Cancel"), NULL);
 968                         g_free(res);
 969                 }
 970                 g_free(attachname);
 971
 972                 if ((G_ALERTDEFAULT != aval) || (procmime_get_part(buf, attachment) < 0))
 973                         alertpanel_error(_("Can't save the part of multipart message."));
 974                 attachment = attachment->node->next != NULL ? (MimeInfo *) attachment->node->next->data : NULL;
 975         }
 976 }
 977
 978 static void mimeview_display_as_text(MimeView *mimeview)
 979 {
 980         MimeInfo *partinfo;
 981
 982         if (!mimeview->opened) return;
 983
 984         partinfo = mimeview_get_selected_part(mimeview);
 985         if (!partinfo)  {
 986                 partinfo = (MimeInfo *) gtk_object_get_data
 987                         (GTK_OBJECT(mimeview->popupmenu),
 988                          "pop_partinfo");
 989                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
 990                                     "pop_partinfo", NULL);
 991
 992         }
 993         g_return_if_fail(partinfo != NULL);
 994         mimeview_show_message_part(mimeview, partinfo);
 995 }
 996
 997 static void mimeview_save_as(MimeView *mimeview)
 998 {
 999         gchar *filename;
1000         gchar *defname = NULL;
1001         MimeInfo *partinfo;
1002         gchar *res;
1003
1004         if (!mimeview->opened) return;
1005         if (!mimeview->file) return;
1006
1007         partinfo = mimeview_get_selected_part(mimeview);
1008         if (!partinfo) {
1009                 partinfo = (MimeInfo *) gtk_object_get_data
1010                         (GTK_OBJECT(mimeview->popupmenu),
1011                          "pop_partinfo");
1012                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1013                                     "pop_partinfo", NULL);
1014         }
1015         g_return_if_fail(partinfo != NULL);
1016
1017         if (partinfo->filename)
1018                 defname = partinfo->filename;
1019         else if (partinfo->name) {
1020                 Xstrdup_a(defname, partinfo->name, return);
1021                 subst_for_filename(defname);
1022         }
1023
1024         filename = filesel_select_file(_("Save as"), defname);
1025         if (!filename) return;
1026         if (is_file_exist(filename)) {
1027                 AlertValue aval;
1028                 res = g_strdup_printf(_("Overwrite existing file '%s'?"),
1029                                       filename);
1030                 aval = alertpanel(_("Overwrite"), res, _("OK"),
1031                                   _("Cancel"), NULL);
1032                 g_free(res);
1033                 if (G_ALERTDEFAULT != aval) return;
1034         }
1035
1036         if (procmime_get_part(filename, partinfo) < 0)
1037                 alertpanel_error
1038                         (_("Can't save the part of multipart message."));
1039 }
1040
1041 static void mimeview_launch(MimeView *mimeview)
1042 {
1043         MimeInfo *partinfo;
1044         gchar *filename;
1045
1046         if (!mimeview->opened) return;
1047         if (!mimeview->file) return;
1048
1049         partinfo = mimeview_get_selected_part(mimeview);
1050         if (!partinfo) {
1051                 partinfo = (MimeInfo *) gtk_object_get_data
1052                         (GTK_OBJECT(mimeview->popupmenu),
1053                          "pop_partinfo");
1054                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1055                                     "pop_partinfo", NULL);
1056         }
1057         g_return_if_fail(partinfo != NULL);
1058
1059         filename = procmime_get_tmp_file_name(partinfo);
1060
1061         if (procmime_get_part(filename, partinfo) < 0)
1062                 alertpanel_error
1063                         (_("Can't save the part of multipart message."));
1064         else
1065                 mimeview_view_file(filename, partinfo, NULL);
1066
1067         g_free(filename);
1068 }
1069
1070 static void mimeview_open_with(MimeView *mimeview)
1071 {
1072         MimeInfo *partinfo;
1073         gchar *filename;
1074         gchar *cmd;
1075
1076         if (!mimeview->opened) return;
1077         if (!mimeview->file) return;
1078
1079         partinfo = mimeview_get_selected_part(mimeview);
1080         if (!partinfo) {
1081                 partinfo = (MimeInfo *) gtk_object_get_data
1082                         (GTK_OBJECT(mimeview->popupmenu),
1083                          "pop_partinfo");
1084                 gtk_object_set_data(GTK_OBJECT(mimeview->popupmenu),
1085                                     "pop_partinfo", NULL);
1086         }
1087         g_return_if_fail(partinfo != NULL);
1088
1089         filename = procmime_get_tmp_file_name(partinfo);
1090
1091         if (procmime_get_part(filename, partinfo) < 0) {
1092                 alertpanel_error
1093                         (_("Can't save the part of multipart message."));
1094                 g_free(filename);
1095                 return;
1096         }
1097
1098         if (!prefs_common.mime_open_cmd_history)
1099                 prefs_common.mime_open_cmd_history =
1100                         add_history(NULL, prefs_common.mime_open_cmd);
1101
1102         cmd = input_dialog_combo
1103                 (_("Open with"),
1104                  _("Enter the command line to open file:\n"
1105                    "(`%s' will be replaced with file name)"),
1106                  prefs_common.mime_open_cmd,
1107                  prefs_common.mime_open_cmd_history,
1108                  TRUE);
1109         if (cmd) {
1110                 mimeview_view_file(filename, partinfo, cmd);
1111                 g_free(prefs_common.mime_open_cmd);
1112                 prefs_common.mime_open_cmd = cmd;
1113                 prefs_common.mime_open_cmd_history =
1114                         add_history(prefs_common.mime_open_cmd_history, cmd);
1115         }
1116
1117         g_free(filename);
1118 }
1119
1120 static void mimeview_view_file(const gchar *filename, MimeInfo *partinfo,
1121                                const gchar *cmdline)
1122 {
1123         static gchar *default_image_cmdline = "display '%s'";
1124         static gchar *default_audio_cmdline = "play '%s'";
1125         static gchar *default_html_cmdline = DEFAULT_BROWSER_CMD;
1126         static gchar *mime_cmdline = "metamail -d -b -x -c %s '%s'";
1127         gchar buf[1024];
1128         gchar m_buf[1024];
1129         const gchar *cmd;
1130         const gchar *def_cmd;
1131         const gchar *p;
1132
1133         if (cmdline) {
1134                 cmd = cmdline;
1135                 def_cmd = NULL;
1136         } else if (MIMETYPE_APPLICATION == partinfo->type) {
1137                 return;
1138         } else if (MIMETYPE_IMAGE == partinfo->type) {
1139                 cmd = prefs_common.mime_image_viewer;
1140                 def_cmd = default_image_cmdline;
1141         } else if (MIMETYPE_AUDIO == partinfo->type) {
1142                 cmd = prefs_common.mime_audio_player;
1143                 def_cmd = default_audio_cmdline;
1144         } else if (MIMETYPE_TEXT == partinfo->type && !strcmp(partinfo->subtype, "html")) {
1145                 cmd = prefs_common.uri_cmd;
1146                 def_cmd = default_html_cmdline;
1147         } else {
1148                 gchar *content_type;
1149
1150                 content_type = g_strdup_printf("%s/%s", procmime_get_type_str(partinfo->type), partinfo->subtype);
1151                 g_snprintf(m_buf, sizeof(m_buf), mime_cmdline,
1152                            content_type, "%s");
1153                 g_free(content_type);
1154                 cmd = m_buf;
1155                 def_cmd = NULL;
1156         }
1157
1158         if (cmd && (p = strchr(cmd, '%')) && *(p + 1) == 's' &&
1159             !strchr(p + 2, '%'))
1160                 g_snprintf(buf, sizeof(buf), cmd, filename);
1161         else {
1162                 if (cmd)
1163                         g_warning("MIME viewer command line is invalid: `%s'", cmd);
1164                 if (def_cmd)
1165                         g_snprintf(buf, sizeof(buf), def_cmd, filename);
1166                 else
1167                         return;
1168         }
1169
1170         execute_command_line(buf, TRUE);
1171 }
1172
1173 void mimeview_register_viewer_factory(MimeViewerFactory *factory)
1174 {
1175         mimeviewer_factories = g_slist_append(mimeviewer_factories, factory);
1176 }
1177
1178 static gint cmp_viewer_by_factroy(gconstpointer a, gconstpointer b)
1179 {
1180         return ((MimeViewer *) a)->factory == (MimeViewerFactory *) b ? 0 : -1;
1181 }
1182
1183 void mimeview_unregister_viewer_factory(MimeViewerFactory *factory)
1184 {
1185         GSList *mimeview_list, *viewer_list;
1186
1187         for (mimeview_list = mimeviews; mimeview_list != NULL; mimeview_list = g_slist_next(mimeview_list)) {
1188                 MimeView *mimeview = (MimeView *) mimeview_list->data;
1189
1190                 if (mimeview->mimeviewer && mimeview->mimeviewer->factory == factory) {
1191                         mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
1192                         mimeview->mimeviewer = NULL;
1193                 }
1194
1195                 while ((viewer_list = g_slist_find_custom(mimeview->viewers, factory, cmp_viewer_by_factroy)) != NULL) {
1196                         MimeViewer *mimeviewer = (MimeViewer *) viewer_list->data;
1197
1198                         mimeviewer->destroy_viewer(mimeviewer);
1199                         mimeview->viewers = g_slist_remove(mimeview->viewers, mimeviewer);
1200                 }
1201         }
1202
1203         mimeviewer_factories = g_slist_remove(mimeviewer_factories, factory);
1204 }
1205
1206 static gboolean icon_clicked_cb (GtkWidget *button, GdkEventButton *event, MimeView *mimeview)
1207 {
1208         gint      num;
1209         MimeInfo *partinfo;
1210
1211         num      = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(button), "icon_number"));
1212         partinfo = gtk_object_get_data(GTK_OBJECT(button), "partinfo");
1213         if (event->button == 1) {
1214                 icon_selected(mimeview, num, partinfo);
1215                 gtk_widget_grab_focus(button);
1216
1217                 if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button)))
1218                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1219                 else
1220                         gtk_signal_emit_stop_by_name(GTK_OBJECT(button), "button_press_event");
1221         }
1222
1223         part_button_pressed(mimeview, event, partinfo);
1224
1225         return TRUE;
1226 }
1227
1228 static void icon_selected (MimeView *mimeview, gint num, MimeInfo *partinfo)
1229 {
1230         GtkCTreeNode *node;
1231         node = gtk_ctree_find_by_row_data(GTK_CTREE(mimeview->ctree), NULL, partinfo);
1232         if (node)
1233                 gtk_ctree_select(GTK_CTREE(mimeview->ctree), node);
1234 }
1235
1236 #undef  KEY_PRESS_EVENT_STOP
1237 #define KEY_PRESS_EVENT_STOP() \
1238         if (gtk_signal_n_emissions_by_name \
1239                 (GTK_OBJECT(button), "key_press_event") > 0) { \
1240                 gtk_signal_emit_stop_by_name(GTK_OBJECT(button), \
1241                                              "key_press_event"); \
1242         }
1243 static gint icon_key_pressed(GtkWidget *button, GdkEventKey *event,
1244                              MimeView *mimeview)
1245 {
1246         gint          num;
1247         MimeInfo     *partinfo;
1248         SummaryView  *summaryview;
1249         TextView     *textview;
1250
1251         num      = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(button), "icon_number"));
1252         partinfo = gtk_object_get_data(GTK_OBJECT(button), "partinfo");
1253
1254         if (!event) return FALSE;
1255
1256         textview = mimeview->textview;
1257
1258         switch (event->keyval) {
1259         case GDK_space:
1260                 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1261                         /* stop the button being untoggled */
1262                         KEY_PRESS_EVENT_STOP();
1263                         if (textview_scroll_page(textview, FALSE))
1264                                 return TRUE;
1265
1266                         if (icon_list_select_by_number(mimeview, num + 1))
1267                                 return TRUE;
1268                 } else {
1269                         icon_selected(mimeview, num, partinfo);
1270                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1271                         return TRUE;
1272                 }
1273
1274                 break;
1275         case GDK_BackSpace:
1276                 textview_scroll_page(textview, TRUE);
1277                 return TRUE;
1278         case GDK_Return:
1279                 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1280                         KEY_PRESS_EVENT_STOP();
1281                         textview_scroll_one_line(textview,
1282                                                  (event->state & GDK_MOD1_MASK) != 0);
1283                         return TRUE;
1284                 } else {
1285                         icon_selected(mimeview, num, partinfo);
1286                         toggle_icon(GTK_TOGGLE_BUTTON(button), mimeview);
1287                         return TRUE;
1288                 }
1289
1290         case GDK_n:
1291         case GDK_N:
1292                 BREAK_ON_MODIFIER_KEY();
1293                 if (icon_list_select_by_number(mimeview, num + 1)) {
1294                         KEY_PRESS_EVENT_STOP();
1295                         return TRUE;
1296                 }
1297                 break;
1298
1299         case GDK_p:
1300         case GDK_P:
1301                 BREAK_ON_MODIFIER_KEY();
1302                 if (icon_list_select_by_number(mimeview, num - 1)) {
1303                         KEY_PRESS_EVENT_STOP();
1304                         return TRUE;
1305                 }
1306                 break;
1307
1308         case GDK_y:
1309                 BREAK_ON_MODIFIER_KEY();
1310                 KEY_PRESS_EVENT_STOP();
1311                 mimeview_save_as(mimeview);
1312                 return TRUE;
1313         case GDK_t:
1314                 BREAK_ON_MODIFIER_KEY();
1315                 KEY_PRESS_EVENT_STOP();
1316                 mimeview_display_as_text(mimeview);
1317                 return TRUE;
1318         case GDK_l:
1319                 BREAK_ON_MODIFIER_KEY();
1320                 KEY_PRESS_EVENT_STOP();
1321                 mimeview_launch(mimeview);
1322                 return TRUE;
1323         default:
1324                 break;
1325         }
1326
1327         if (!mimeview->messageview->mainwin) return FALSE;
1328         summaryview = mimeview->messageview->mainwin->summaryview;
1329         summary_pass_key_press_event(summaryview, event);
1330         return TRUE;
1331 }
1332
1333 static void toggle_icon(GtkToggleButton *button, MimeView *mimeview)
1334 {
1335         GList *child;
1336
1337         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1338         for (; child != NULL; child = g_list_next(child)) {
1339                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1340                     GTK_TOGGLE_BUTTON(child->data) != button &&
1341                     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(child->data)))
1342                         gtk_toggle_button_set_active
1343                                 (GTK_TOGGLE_BUTTON(child->data),
1344                                  FALSE);
1345         }
1346 }
1347
1348 static void icon_list_append_icon (MimeView *mimeview, MimeInfo *mimeinfo)
1349 {
1350         GtkWidget *pixmap;
1351         GtkWidget *vbox;
1352         GtkWidget *button;
1353         gchar *tip;
1354         gchar *desc = NULL;
1355         StockPixmap stockp;
1356
1357         vbox = mimeview->icon_vbox;
1358         mimeview->icon_count++;
1359         button = gtk_toggle_button_new();
1360         gtk_button_set_relief(GTK_BUTTON(button), GTK_RELIEF_NONE);
1361         gtk_object_set_data(GTK_OBJECT(button), "icon_number",
1362                 GINT_TO_POINTER(mimeview->icon_count));
1363         gtk_object_set_data(GTK_OBJECT(button), "partinfo",
1364                 mimeinfo);
1365
1366         switch (mimeinfo->type) {
1367
1368         case MIMETYPE_TEXT:
1369                 if (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "html"))
1370                         stockp = STOCK_PIXMAP_MIME_TEXT_HTML;
1371                 else if  (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "enriched"))
1372                         stockp = STOCK_PIXMAP_MIME_TEXT_ENRICHED;
1373                 else
1374                         stockp = STOCK_PIXMAP_MIME_TEXT_PLAIN;
1375                 break;
1376         case MIMETYPE_MESSAGE:
1377                 stockp = STOCK_PIXMAP_MIME_MESSAGE;
1378                 break;
1379         case MIMETYPE_APPLICATION:
1380                 if (mimeinfo->subtype && !g_strcasecmp(mimeinfo->subtype, "octet-stream"))
1381                         stockp = STOCK_PIXMAP_MIME_APPLICATION_OCTET_STREAM;
1382                 else
1383                         stockp = STOCK_PIXMAP_MIME_APPLICATION;
1384                 break;
1385         case MIMETYPE_IMAGE:
1386                 stockp = STOCK_PIXMAP_MIME_IMAGE;
1387                 break;
1388         case MIMETYPE_AUDIO:
1389                 stockp = STOCK_PIXMAP_MIME_AUDIO;
1390                 break;
1391         default:
1392                 stockp = STOCK_PIXMAP_MIME_UNKNOWN;
1393                 break;
1394         }
1395
1396         pixmap = stock_pixmap_widget(mimeview->mainwin->window, stockp);
1397         gtk_container_add(GTK_CONTAINER(button), pixmap);
1398
1399         if (!desc) {
1400                 if (prefs_common.attach_desc)
1401                         desc = get_part_description(mimeinfo);
1402                 else
1403                         desc = get_part_name(mimeinfo);
1404         }
1405
1406         if (desc && *desc)
1407                 tip = g_strdup_printf("%s\n%s/%s\n%s", desc,
1408                                 procmime_get_type_str(mimeinfo->type),
1409                                 mimeinfo->subtype,
1410                                 to_human_readable(mimeinfo->length));
1411         else
1412                 tip = g_strdup_printf("%s/%s\n%s",
1413                                 procmime_get_type_str(mimeinfo->type),
1414                                 mimeinfo->subtype,
1415                                 to_human_readable(mimeinfo->length));
1416
1417         gtk_tooltips_set_tip(mimeview->tooltips, button, tip, NULL);
1418         g_free(tip);
1419         gtk_widget_show_all(button);
1420         gtk_signal_connect(GTK_OBJECT(button), "button_press_event",
1421                            GTK_SIGNAL_FUNC(icon_clicked_cb), mimeview);
1422         gtk_signal_connect(GTK_OBJECT(button), "key_press_event",
1423                            GTK_SIGNAL_FUNC(icon_key_pressed), mimeview);
1424         gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
1425
1426 }
1427
1428 static void icon_list_clear (MimeView *mimeview)
1429 {
1430         GList     *child;
1431         GtkAdjustment *adj;
1432
1433         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1434         for (; child != NULL; child = g_list_next(child)) {
1435                 gtkut_container_remove(GTK_CONTAINER(mimeview->icon_vbox),
1436                                        GTK_WIDGET(child->data));
1437         }
1438         mimeview->icon_count = 0;
1439         adj  = gtk_layout_get_vadjustment(GTK_LAYOUT(mimeview->icon_scroll));
1440         adj->value = adj->lower;
1441         gtk_signal_emit_by_name(GTK_OBJECT (adj), "value_changed");
1442 }
1443
1444 static void icon_list_toggle_by_mime_info(MimeView      *mimeview,
1445                                           MimeInfo      *mimeinfo)
1446 {
1447         GList *child;
1448
1449         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1450         for (; child != NULL; child = g_list_next(child)) {
1451                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1452                     gtk_object_get_data(GTK_OBJECT(child->data),
1453                                         "partinfo") == (gpointer)mimeinfo) {
1454                         toggle_icon(GTK_TOGGLE_BUTTON(child->data), mimeview);
1455                         gtk_toggle_button_set_active
1456                                 (GTK_TOGGLE_BUTTON(child->data), TRUE);
1457                 }
1458         }
1459 }
1460
1461 /*!
1462  *\brief        Used to 'click' the next or previous icon.
1463  *
1464  *\return       true if the icon 'number' exists and was selected.
1465  */
1466 static gboolean icon_list_select_by_number(MimeView     *mimeview,
1467                                            gint          number)
1468 {
1469         GList *child;
1470
1471         if (number == 0) return FALSE;
1472         child = gtk_container_children(GTK_CONTAINER(mimeview->icon_vbox));
1473         for (; child != NULL; child = g_list_next(child)) {
1474                 if (GTK_IS_TOGGLE_BUTTON(child->data) &&
1475                     GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(child->data),
1476                                         "icon_number")) == number) {
1477                         icon_selected(mimeview, number,
1478                                       (MimeInfo*)gtk_object_get_data(GTK_OBJECT(child->data),
1479                                                                      "partinfo"));
1480                         toggle_icon(GTK_TOGGLE_BUTTON(child->data), mimeview);
1481                         gtk_toggle_button_set_active
1482                                 (GTK_TOGGLE_BUTTON(child->data), TRUE);
1483                         gtk_widget_grab_focus(GTK_WIDGET(child->data));
1484
1485                         return TRUE;
1486                 }
1487         }
1488         return FALSE;
1489 }
1490
1491 static void icon_scroll_size_allocate_cb(GtkWidget *widget,
1492                                         GtkAllocation *size, MimeView *mimeview)
1493 {
1494         GtkAllocation *mainbox_size;
1495         GtkAllocation *vbox_size;
1496         GtkAllocation *layout_size;
1497         GtkAdjustment *adj;
1498
1499         adj = gtk_layout_get_vadjustment(GTK_LAYOUT(mimeview->icon_scroll));
1500
1501         mainbox_size = &mimeview->icon_mainbox->allocation;
1502         vbox_size = &mimeview->icon_vbox->allocation;
1503         layout_size = &mimeview->icon_scroll->allocation;
1504
1505         /* centralise the vbox */
1506         gtk_layout_move(GTK_LAYOUT(mimeview->icon_scroll), mimeview->icon_vbox,
1507                         (mainbox_size->width - vbox_size->width)/2, 0);
1508
1509         gtk_layout_set_size(GTK_LAYOUT(mimeview->icon_scroll),
1510                             GTK_LAYOUT(mimeview->icon_scroll)->width,
1511                             MAX(vbox_size->height, layout_size->height));
1512         adj->step_increment = 5;
1513 }
1514
1515 static void icon_list_create(MimeView *mimeview, MimeInfo *mimeinfo)
1516 {
1517         GtkRequisition size;
1518         gint           width;
1519         g_return_if_fail(mimeinfo != NULL);
1520
1521         while (mimeinfo != NULL) {
1522                 if (mimeinfo->type != MIMETYPE_MULTIPART)
1523                         icon_list_append_icon(mimeview, mimeinfo);
1524                 if (mimeinfo->node->children != NULL)
1525                         icon_list_create(mimeview, (MimeInfo *) mimeinfo->node->children->data);
1526                 mimeinfo = mimeinfo->node->next != NULL ? (MimeInfo *) mimeinfo->node->next->data : NULL;
1527         }
1528         gtk_widget_size_request(mimeview->icon_vbox, &size);
1529         width = size.width + 4;
1530         if (width > mimeview->icon_mainbox->requisition.width) {
1531                 gtk_widget_set_usize(mimeview->icon_mainbox,
1532                                      width, -1);
1533         }
1534
1535 }
1536
1537 static void mime_toggle_button_cb (GtkWidget *button, MimeView *mimeview)
1538 {
1539         gtk_widget_ref(button);
1540
1541         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
1542                 gtk_arrow_set(GTK_ARROW(GTK_BIN(button)->child), GTK_ARROW_RIGHT,
1543                                         GTK_SHADOW_NONE);
1544                 gtk_widget_hide(mimeview->icon_mainbox);
1545                 gtk_widget_show(mimeview->ctree_mainbox);
1546                 gtk_paned_set_position(GTK_PANED(mimeview->paned), mimeview->oldsize);
1547
1548                 gtkut_container_remove(GTK_CONTAINER(mimeview->icon_mainbox),
1549                                         button);
1550                 gtk_box_pack_end(GTK_BOX(mimeview->ctree_mainbox),
1551                                    button, FALSE, FALSE, 0);
1552                 gtk_paned_set_gutter_size(GTK_PANED(mimeview->paned), 6);
1553         } else {
1554                 gtk_arrow_set(GTK_ARROW(GTK_BIN(button)->child), GTK_ARROW_LEFT,
1555                               GTK_SHADOW_NONE);
1556                 mimeview->oldsize = mimeview->ctree_mainbox->allocation.height;
1557                 gtk_widget_hide(mimeview->ctree_mainbox);
1558                 gtk_widget_show(mimeview->icon_mainbox);
1559                 gtk_paned_set_position(GTK_PANED(mimeview->paned), 0);
1560
1561                 gtkut_container_remove(GTK_CONTAINER(mimeview->ctree_mainbox),
1562                                         button);
1563                 gtk_box_pack_start(GTK_BOX(mimeview->icon_mainbox),
1564                                    button, FALSE, FALSE, 0);
1565                 gtk_box_reorder_child(GTK_BOX(button->parent), button, 0);
1566                 if (mimeview->opened)
1567                         icon_list_toggle_by_mime_info
1568                                 (mimeview, gtk_ctree_node_get_row_data(GTK_CTREE(mimeview->ctree),
1569                                                                        mimeview->opened));
1570
1571                 gtk_paned_set_gutter_size(GTK_PANED(mimeview->paned), 0);
1572         }
1573         gtk_widget_grab_focus(button);
1574         gtk_widget_unref(button);
1575
1576 }
1577
1578 void mimeview_update (MimeView *mimeview) {
1579         if (mimeview && mimeview->mimeinfo) {
1580                 icon_list_clear(mimeview);
1581                 icon_list_create(mimeview, mimeview->mimeinfo);
1582         }
1583 }