src/textview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 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/gdk.h>
  28 #include <gdk/gdkkeysyms.h>
  29 #include <gtk/gtkvbox.h>
  30 #include <gtk/gtkscrolledwindow.h>
  31 #include <gtk/gtksignal.h>
  32 #include <stdio.h>
  33 #include <ctype.h>
  34 #include <string.h>
  35 #include <stdlib.h>
  36
  37 #include "intl.h"
  38 #include "main.h"
  39 #include "summaryview.h"
  40 #include "procheader.h"
  41 #include "prefs_common.h"
  42 #include "codeconv.h"
  43 #include "gtkstext.h"
  44 #include "utils.h"
  45 #include "gtkutils.h"
  46 #include "procmime.h"
  47 #include "html.h"
  48 #include "enriched.h"
  49 #include "compose.h"
  50 #include "addressbook.h"
  51 #include "displayheader.h"
  52 #include "account.h"
  53 #include "mimeview.h"
  54
  55 typedef struct _RemoteURI       RemoteURI;
  56
  57 struct _RemoteURI
  58 {
  59         gchar *uri;
  60
  61         guint start;
  62         guint end;
  63 };
  64
  65 static GdkColor quote_colors[3] = {
  66         {(gulong)0, (gushort)0, (gushort)0, (gushort)0},
  67         {(gulong)0, (gushort)0, (gushort)0, (gushort)0},
  68         {(gulong)0, (gushort)0, (gushort)0, (gushort)0}
  69 };
  70
  71 static GdkColor signature_color = {
  72         (gulong)0,
  73         (gushort)0x7fff,
  74         (gushort)0x7fff,
  75         (gushort)0x7fff
  76 };
  77
  78 static GdkColor uri_color = {
  79         (gulong)0,
  80         (gushort)0,
  81         (gushort)0,
  82         (gushort)0
  83 };
  84
  85 static GdkColor emphasis_color = {
  86         (gulong)0,
  87         (gushort)0,
  88         (gushort)0,
  89         (gushort)0xcfff
  90 };
  91
  92 #if 0
  93 static GdkColor error_color = {
  94         (gulong)0,
  95         (gushort)0xefff,
  96         (gushort)0,
  97         (gushort)0
  98 };
  99 #endif
 100
 101 static GdkFont *text_sb_font;
 102 static GdkFont *text_mb_font;
 103 static gint text_sb_font_orig_ascent;
 104 static gint text_sb_font_orig_descent;
 105 static gint text_mb_font_orig_ascent;
 106 static gint text_mb_font_orig_descent;
 107 static GdkFont *spacingfont;
 108
 109 static void textview_show_ertf          (TextView       *textview,
 110                                          FILE           *fp,
 111                                          CodeConverter  *conv);
 112 static void textview_add_part           (TextView       *textview,
 113                                          MimeInfo       *mimeinfo,
 114                                          FILE           *fp);
 115 static void textview_add_parts          (TextView       *textview,
 116                                          MimeInfo       *mimeinfo,
 117                                          FILE           *fp);
 118 static void textview_write_body         (TextView       *textview,
 119                                          MimeInfo       *mimeinfo,
 120                                          FILE           *fp,
 121                                          const gchar    *charset);
 122 static void textview_show_html          (TextView       *textview,
 123                                          FILE           *fp,
 124                                          CodeConverter  *conv);
 125 static void textview_write_line         (TextView       *textview,
 126                                          const gchar    *str,
 127                                          CodeConverter  *conv);
 128 static void textview_write_link         (TextView       *textview,
 129                                          const gchar    *url,
 130                                          const gchar    *str,
 131                                          CodeConverter  *conv);
 132 static GPtrArray *textview_scan_header  (TextView       *textview,
 133                                          FILE           *fp);
 134 static void textview_show_header        (TextView       *textview,
 135                                          GPtrArray      *headers);
 136
 137 static gint textview_key_pressed        (GtkWidget      *widget,
 138                                          GdkEventKey    *event,
 139                                          TextView       *textview);
 140 static gint textview_button_pressed     (GtkWidget      *widget,
 141                                          GdkEventButton *event,
 142                                          TextView       *textview);
 143 static gint textview_button_released    (GtkWidget      *widget,
 144                                          GdkEventButton *event,
 145                                          TextView       *textview);
 146
 147 static void textview_uri_list_remove_all(GSList         *uri_list);
 148
 149 static void textview_smooth_scroll_do           (TextView       *textview,
 150                                                  gfloat          old_value,
 151                                                  gfloat          last_value,
 152                                                  gint            step);
 153 static void textview_smooth_scroll_one_line     (TextView       *textview,
 154                                                  gboolean        up);
 155 static gboolean textview_smooth_scroll_page     (TextView       *textview,
 156                                                  gboolean        up);
 157
 158
 159 TextView *textview_create(void)
 160 {
 161         TextView *textview;
 162         GtkWidget *vbox;
 163         GtkWidget *scrolledwin_sb;
 164         GtkWidget *scrolledwin_mb;
 165         GtkWidget *text_sb;
 166         GtkWidget *text_mb;
 167
 168         debug_print("Creating text view...\n");
 169         textview = g_new0(TextView, 1);
 170
 171         scrolledwin_sb = gtk_scrolled_window_new(NULL, NULL);
 172         scrolledwin_mb = gtk_scrolled_window_new(NULL, NULL);
 173         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin_sb),
 174                                        GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 175         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin_mb),
 176                                        GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 177         gtk_widget_set_usize(scrolledwin_sb, prefs_common.mainview_width, -1);
 178         gtk_widget_set_usize(scrolledwin_mb, prefs_common.mainview_width, -1);
 179
 180         /* create GtkSText widgets for single-byte and multi-byte character */
 181         text_sb = gtk_stext_new(NULL, NULL);
 182         text_mb = gtk_stext_new(NULL, NULL);
 183         GTK_STEXT(text_sb)->default_tab_width = 8;
 184         GTK_STEXT(text_mb)->default_tab_width = 8;
 185         gtk_widget_show(text_sb);
 186         gtk_widget_show(text_mb);
 187         gtk_stext_set_word_wrap(GTK_STEXT(text_sb), TRUE);
 188         gtk_stext_set_word_wrap(GTK_STEXT(text_mb), TRUE);
 189         gtk_widget_ensure_style(text_sb);
 190         gtk_widget_ensure_style(text_mb);
 191         if (text_sb->style && text_sb->style->font->type == GDK_FONT_FONTSET) {
 192                 GtkStyle *style;
 193                 GdkFont *font;
 194
 195                 font = gtkut_font_load_from_fontset(prefs_common.normalfont);
 196                 if (font) {
 197                         style = gtk_style_copy(text_sb->style);
 198                         gdk_font_unref(style->font);
 199                         style->font = font;
 200                         gtk_widget_set_style(text_sb, style);
 201                 }
 202         }
 203         if (text_mb->style && text_mb->style->font->type == GDK_FONT_FONT) {
 204                 GtkStyle *style;
 205                 GdkFont *font;
 206
 207                 font = gdk_fontset_load(prefs_common.normalfont);
 208                 if (font) {
 209                         style = gtk_style_copy(text_mb->style);
 210                         gdk_font_unref(style->font);
 211                         style->font = font;
 212                         gtk_widget_set_style(text_mb, style);
 213                 }
 214         }
 215         gtk_widget_ref(scrolledwin_sb);
 216         gtk_widget_ref(scrolledwin_mb);
 217
 218         gtk_container_add(GTK_CONTAINER(scrolledwin_sb), text_sb);
 219         gtk_container_add(GTK_CONTAINER(scrolledwin_mb), text_mb);
 220         gtk_signal_connect(GTK_OBJECT(text_sb), "key_press_event",
 221                            GTK_SIGNAL_FUNC(textview_key_pressed),
 222                            textview);
 223         gtk_signal_connect_after(GTK_OBJECT(text_sb), "button_press_event",
 224                                  GTK_SIGNAL_FUNC(textview_button_pressed),
 225                                  textview);
 226         gtk_signal_connect_after(GTK_OBJECT(text_sb), "button_release_event",
 227                                  GTK_SIGNAL_FUNC(textview_button_released),
 228                                  textview);
 229         gtk_signal_connect(GTK_OBJECT(text_mb), "key_press_event",
 230                            GTK_SIGNAL_FUNC(textview_key_pressed),
 231                            textview);
 232         gtk_signal_connect_after(GTK_OBJECT(text_mb), "button_press_event",
 233                                  GTK_SIGNAL_FUNC(textview_button_pressed),
 234                                  textview);
 235         gtk_signal_connect_after(GTK_OBJECT(text_mb), "button_release_event",
 236                                  GTK_SIGNAL_FUNC(textview_button_released),
 237                                  textview);
 238
 239         gtk_widget_show(scrolledwin_sb);
 240         gtk_widget_show(scrolledwin_mb);
 241
 242         vbox = gtk_vbox_new(FALSE, 0);
 243         gtk_box_pack_start(GTK_BOX(vbox), scrolledwin_sb, TRUE, TRUE, 0);
 244
 245         gtk_widget_show(vbox);
 246
 247         textview->vbox             = vbox;
 248         textview->scrolledwin      = scrolledwin_sb;
 249         textview->scrolledwin_sb   = scrolledwin_sb;
 250         textview->scrolledwin_mb   = scrolledwin_mb;
 251         textview->text             = text_sb;
 252         textview->text_sb          = text_sb;
 253         textview->text_mb          = text_mb;
 254         textview->text_is_mb       = FALSE;
 255         textview->uri_list         = NULL;
 256         textview->body_pos         = 0;
 257         textview->cur_pos          = 0;
 258         textview->show_all_headers = FALSE;
 259         textview->last_buttonpress = GDK_NOTHING;
 260         textview->show_url_msgid   = 0;
 261
 262         return textview;
 263 }
 264
 265 void textview_init(TextView *textview)
 266 {
 267         gtkut_widget_disable_theme_engine(textview->text_sb);
 268         gtkut_widget_disable_theme_engine(textview->text_mb);
 269         textview_update_message_colors();
 270         textview_set_all_headers(textview, FALSE);
 271         textview_set_font(textview, NULL);
 272 }
 273
 274 void textview_update_message_colors(void)
 275 {
 276         GdkColor black = {0, 0, 0, 0};
 277
 278         if (prefs_common.enable_color) {
 279                 /* grab the quote colors, converting from an int to a GdkColor */
 280                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level1_col,
 281                                                &quote_colors[0]);
 282                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level2_col,
 283                                                &quote_colors[1]);
 284                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level3_col,
 285                                                &quote_colors[2]);
 286                 gtkut_convert_int_to_gdk_color(prefs_common.uri_col,
 287                                                &uri_color);
 288                 gtkut_convert_int_to_gdk_color(prefs_common.signature_col,
 289                                                &signature_color);
 290         } else {
 291                 quote_colors[0] = quote_colors[1] = quote_colors[2] =
 292                         uri_color = emphasis_color = signature_color = black;
 293         }
 294 }
 295
 296 void textview_show_message(TextView *textview, MimeInfo *mimeinfo,
 297                            const gchar *file)
 298 {
 299         GtkSText *text;
 300         FILE *fp;
 301         const gchar *charset = NULL;
 302         GPtrArray *headers = NULL;
 303
 304         if ((fp = fopen(file, "rb")) == NULL) {
 305                 FILE_OP_ERROR(file, "fopen");
 306                 return;
 307         }
 308
 309         if (prefs_common.force_charset)
 310                 charset = prefs_common.force_charset;
 311         else if (mimeinfo->charset)
 312                 charset = mimeinfo->charset;
 313         textview_set_font(textview, charset);
 314         textview_clear(textview);
 315
 316         text = GTK_STEXT(textview->text);
 317
 318         gtk_stext_freeze(text);
 319
 320         if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0) perror("fseek");
 321         headers = textview_scan_header(textview, fp);
 322         if (headers) {
 323                 textview_show_header(textview, headers);
 324                 procheader_header_array_destroy(headers);
 325                 textview->body_pos = gtk_stext_get_length(text);
 326         }
 327
 328         textview_add_parts(textview, mimeinfo, fp);
 329
 330         gtk_stext_thaw(text);
 331
 332         fclose(fp);
 333 }
 334
 335 void textview_show_part(TextView *textview, MimeInfo *mimeinfo, FILE *fp)
 336 {
 337         GtkSText *text;
 338         gchar buf[BUFFSIZE];
 339         const gchar *boundary = NULL;
 340         gint boundary_len = 0;
 341         const gchar *charset = NULL;
 342         GPtrArray *headers = NULL;
 343         gboolean is_rfc822_part = FALSE;
 344
 345         g_return_if_fail(mimeinfo != NULL);
 346         g_return_if_fail(fp != NULL);
 347
 348         if (mimeinfo->mime_type == MIME_MULTIPART) {
 349                 textview_clear(textview);
 350                 textview_add_parts(textview, mimeinfo, fp);
 351                 return;
 352         }
 353
 354         if (mimeinfo->parent && mimeinfo->parent->boundary) {
 355                 boundary = mimeinfo->parent->boundary;
 356                 boundary_len = strlen(boundary);
 357         }
 358
 359         if (!boundary && (mimeinfo->mime_type == MIME_TEXT ||
 360                           mimeinfo->mime_type == MIME_TEXT_HTML ||
 361                           mimeinfo->mime_type == MIME_TEXT_ENRICHED)) {
 362
 363                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 364                         perror("fseek");
 365                 headers = textview_scan_header(textview, fp);
 366         } else {
 367                 if (mimeinfo->mime_type == MIME_TEXT && mimeinfo->parent) {
 368                         glong fpos;
 369                         MimeInfo *parent = mimeinfo->parent;
 370
 371                         while (parent->parent) {
 372                                 if (parent->main &&
 373                                     parent->main->mime_type ==
 374                                         MIME_MESSAGE_RFC822)
 375                                         break;
 376                                 parent = parent->parent;
 377                         }
 378
 379                         if ((fpos = ftell(fp)) < 0)
 380                                 perror("ftell");
 381                         else if (fseek(fp, parent->fpos, SEEK_SET) < 0)
 382                                 perror("fseek");
 383                         else {
 384                                 headers = textview_scan_header(textview, fp);
 385                                 if (fseek(fp, fpos, SEEK_SET) < 0)
 386                                         perror("fseek");
 387                         }
 388                 }
 389                 /* skip MIME part headers */
 390                 while (fgets(buf, sizeof(buf), fp) != NULL)
 391                         if (buf[0] == '\r' || buf[0] == '\n') break;
 392         }
 393
 394         /* display attached RFC822 single text message */
 395         if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
 396                 if (headers) procheader_header_array_destroy(headers);
 397                 if (!mimeinfo->sub) {
 398                         textview_clear(textview);
 399                         return;
 400                 }
 401                 headers = textview_scan_header(textview, fp);
 402                 mimeinfo = mimeinfo->sub;
 403                 is_rfc822_part = TRUE;
 404         }
 405
 406         if (prefs_common.force_charset)
 407                 charset = prefs_common.force_charset;
 408         else if (mimeinfo->charset)
 409                 charset = mimeinfo->charset;
 410         textview_set_font(textview, charset);
 411
 412         text = GTK_STEXT(textview->text);
 413
 414         gtk_stext_freeze(text);
 415         textview_clear(textview);
 416
 417         if (headers) {
 418                 textview_show_header(textview, headers);
 419                 procheader_header_array_destroy(headers);
 420                 textview->body_pos = gtk_stext_get_length(text);
 421                 if (!mimeinfo->main)
 422                         gtk_stext_insert(text, NULL, NULL, NULL, "\n", 1);
 423         }
 424
 425         if (mimeinfo->mime_type == MIME_MULTIPART || is_rfc822_part)
 426                 textview_add_parts(textview, mimeinfo, fp);
 427         else
 428                 textview_write_body(textview, mimeinfo, fp, charset);
 429
 430         gtk_stext_thaw(text);
 431 }
 432
 433 static void textview_add_part(TextView *textview, MimeInfo *mimeinfo, FILE *fp)
 434 {
 435         GtkSText *text = GTK_STEXT(textview->text);
 436         gchar buf[BUFFSIZE];
 437         const gchar *boundary = NULL;
 438         gint boundary_len = 0;
 439         const gchar *charset = NULL;
 440         GPtrArray *headers = NULL;
 441
 442         g_return_if_fail(mimeinfo != NULL);
 443         g_return_if_fail(fp != NULL);
 444
 445         if (mimeinfo->mime_type == MIME_MULTIPART) return;
 446
 447         if (!mimeinfo->parent &&
 448             mimeinfo->mime_type != MIME_TEXT &&
 449             mimeinfo->mime_type != MIME_TEXT_HTML &&
 450             mimeinfo->mime_type != MIME_TEXT_ENRICHED)
 451                 return;
 452
 453         if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0) {
 454                 perror("fseek");
 455                 return;
 456         }
 457
 458         if (mimeinfo->parent && mimeinfo->parent->boundary) {
 459                 boundary = mimeinfo->parent->boundary;
 460                 boundary_len = strlen(boundary);
 461         }
 462
 463         while (fgets(buf, sizeof(buf), fp) != NULL)
 464                 if (buf[0] == '\r' || buf[0] == '\n') break;
 465
 466         if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
 467                 headers = textview_scan_header(textview, fp);
 468                 if (headers) {
 469                         gtk_stext_freeze(text);
 470                         gtk_stext_insert(text, NULL, NULL, NULL, "\n", 1);
 471                         textview_show_header(textview, headers);
 472                         procheader_header_array_destroy(headers);
 473                         gtk_stext_thaw(text);
 474                 }
 475                 return;
 476         }
 477
 478         gtk_stext_freeze(text);
 479
 480 #if USE_GPGME
 481         if (mimeinfo->sigstatus)
 482                 g_snprintf(buf, sizeof(buf), "\n[%s (%s)]\n",
 483                            mimeinfo->content_type, mimeinfo->sigstatus);
 484         else
 485 #endif
 486         if (mimeinfo->filename || mimeinfo->name)
 487                 g_snprintf(buf, sizeof(buf), "\n[%s  %s (%d bytes)]\n",
 488                            mimeinfo->filename ? mimeinfo->filename :
 489                            mimeinfo->name,
 490                            mimeinfo->content_type, mimeinfo->size);
 491         else
 492                 g_snprintf(buf, sizeof(buf), "\n[%s (%d bytes)]\n",
 493                            mimeinfo->content_type, mimeinfo->size);
 494
 495 #if USE_GPGME
 496         if (mimeinfo->sigstatus && !mimeinfo->sigstatus_full) {
 497                 gchar *tmp;
 498                 /* use standard font */
 499                 gpointer oldfont = textview->msgfont;
 500                 textview->msgfont = NULL;
 501
 502                 tmp = g_strconcat("pgp: ", _("Check signature"), NULL);
 503                 textview_write_link(textview, tmp, buf, NULL);
 504
 505                 /* put things back */
 506                 textview->msgfont = (GdkFont *)oldfont;
 507                 oldfont = NULL;
 508                 g_free(tmp);
 509         } else
 510 #endif
 511         if (mimeinfo->mime_type != MIME_TEXT &&
 512             mimeinfo->mime_type != MIME_TEXT_HTML &&
 513             mimeinfo->mime_type != MIME_TEXT_ENRICHED) {
 514                 gtk_stext_insert(text, NULL, NULL, NULL, buf, -1);
 515         } else {
 516                 if (!mimeinfo->main &&
 517                     mimeinfo->parent &&
 518                     mimeinfo->parent->children != mimeinfo)
 519                         gtk_stext_insert(text, NULL, NULL, NULL, buf, -1);
 520                 else if (prefs_common.display_header)
 521                         gtk_stext_insert(text, NULL, NULL, NULL, "\n", 1);
 522                 if (prefs_common.force_charset)
 523                         charset = prefs_common.force_charset;
 524                 else if (mimeinfo->charset)
 525                         charset = mimeinfo->charset;
 526                 textview_write_body(textview, mimeinfo, fp, charset);
 527         }
 528
 529         gtk_stext_thaw(text);
 530 }
 531
 532 static void textview_add_parts(TextView *textview, MimeInfo *mimeinfo, FILE *fp)
 533 {
 534         gint level;
 535
 536         g_return_if_fail(mimeinfo != NULL);
 537         g_return_if_fail(fp != NULL);
 538
 539         level = mimeinfo->level;
 540
 541         for (;;) {
 542                 textview_add_part(textview, mimeinfo, fp);
 543                 if (mimeinfo->parent && mimeinfo->parent->content_type &&
 544                     !strcasecmp(mimeinfo->parent->content_type,
 545                                 "multipart/alternative"))
 546                         mimeinfo = mimeinfo->parent->next;
 547                 else
 548                         mimeinfo = procmime_mimeinfo_next(mimeinfo);
 549                 if (!mimeinfo || mimeinfo->level <= level)
 550                         break;
 551         }
 552 }
 553
 554 #define TEXT_INSERT(str) \
 555         gtk_stext_insert(text, textview->msgfont, NULL, NULL, str, -1)
 556
 557 void textview_show_mime_part(TextView *textview, MimeInfo *partinfo)
 558 {
 559         GtkSText *text;
 560
 561         if (!partinfo) return;
 562
 563         textview_set_font(textview, NULL);
 564         text = GTK_STEXT(textview->text);
 565         textview_clear(textview);
 566
 567         gtk_stext_freeze(text);
 568
 569         TEXT_INSERT(_("To save this part, pop up the context menu with "));
 570         TEXT_INSERT(_("right click and select `Save as...', "));
 571         TEXT_INSERT(_("or press `y' key.\n\n"));
 572
 573         TEXT_INSERT(_("To display this part as a text message, select "));
 574         TEXT_INSERT(_("`Display as text', or press `t' key.\n\n"));
 575
 576         TEXT_INSERT(_("To display this part as an image, select "));
 577         TEXT_INSERT(_("`Display image', or press `i' key.\n\n"));
 578
 579         TEXT_INSERT(_("To open this part with external program, select "));
 580         TEXT_INSERT(_("`Open' or `Open with...', "));
 581         TEXT_INSERT(_("or double-click, or click the center button, "));
 582         TEXT_INSERT(_("or press `l' key."));
 583
 584         gtk_stext_thaw(text);
 585 }
 586
 587 #if USE_GPGME
 588 void textview_show_signature_part(TextView *textview, MimeInfo *partinfo)
 589 {
 590         GtkSText *text;
 591
 592         if (!partinfo) return;
 593
 594         textview_set_font(textview, NULL);
 595         text = GTK_STEXT(textview->text);
 596         textview_clear(textview);
 597
 598         gtk_stext_freeze(text);
 599
 600         if (partinfo->sigstatus_full == NULL) {
 601                 TEXT_INSERT(_("This signature has not been checked yet.\n"));
 602                 TEXT_INSERT(_("To check it, pop up the context menu with\n"));
 603                 TEXT_INSERT(_("right click and select `Check signature'.\n"));
 604         } else {
 605                 TEXT_INSERT(partinfo->sigstatus_full);
 606         }
 607
 608         gtk_stext_thaw(text);
 609 }
 610 #endif /* USE_GPGME */
 611
 612 #undef TEXT_INSERT
 613
 614 static void textview_write_body(TextView *textview, MimeInfo *mimeinfo,
 615                                 FILE *fp, const gchar *charset)
 616 {
 617         FILE *tmpfp;
 618         gchar buf[BUFFSIZE];
 619         CodeConverter *conv;
 620
 621         conv = conv_code_converter_new(charset);
 622
 623         tmpfp = procmime_decode_content(NULL, fp, mimeinfo);
 624
 625         textview->is_in_signature = FALSE;
 626
 627         if (tmpfp) {
 628
 629                 if (mimeinfo->mime_type == MIME_TEXT_HTML)
 630                         textview_show_html(textview, tmpfp, conv);
 631                 else if (mimeinfo->mime_type == MIME_TEXT_ENRICHED)
 632                         textview_show_ertf(textview, tmpfp, conv);
 633                 else
 634                         while (fgets(buf, sizeof(buf), tmpfp) != NULL)
 635                                 textview_write_line(textview, buf, conv);
 636                 fclose(tmpfp);
 637         }
 638
 639         conv_code_converter_destroy(conv);
 640 }
 641
 642 static void textview_show_html(TextView *textview, FILE *fp,
 643                                CodeConverter *conv)
 644 {
 645         HTMLParser *parser;
 646         gchar *str;
 647         gchar* url = NULL;
 648
 649         parser = html_parser_new(fp, conv);
 650         g_return_if_fail(parser != NULL);
 651
 652         while ((str = html_parse(parser)) != NULL) {
 653                 if (parser->state == HTML_HREF) {
 654                         /* first time : get and copy the URL */
 655                         if (url == NULL) {
 656                                 /* ALF - the sylpheed html parser returns an empty string,
 657                                  * if still inside an <a>, but already parsed past HREF */
 658                                 str = strtok(str, " ");
 659                                 if (str) {
 660                                         url = strdup(str);
 661                                         /* the URL may (or not) be followed by the
 662                                          * referenced text */
 663                                         str = strtok(NULL, "");
 664                                 }
 665                         }
 666                         if (str != NULL) {
 667                                 textview_write_link(textview, url, str, NULL);
 668                         }
 669                 } else {
 670                         if (url != NULL) {
 671                                 free(url);
 672                                 url = NULL;
 673                         }
 674                         textview_write_line(textview, str, NULL);
 675                 }
 676         }
 677
 678         html_parser_destroy(parser);
 679 }
 680
 681 static void textview_show_ertf(TextView *textview, FILE *fp,
 682                                CodeConverter *conv)
 683 {
 684         ERTFParser *parser;
 685         gchar *str;
 686
 687         parser = ertf_parser_new(fp, conv);
 688         g_return_if_fail(parser != NULL);
 689
 690         while ((str = ertf_parse(parser)) != NULL) {
 691                 textview_write_line(textview, str, NULL);
 692         }
 693
 694         ertf_parser_destroy(parser);
 695 }
 696
 697 /* get_uri_part() - retrieves a URI starting from scanpos.
 698                     Returns TRUE if succesful */
 699 static gboolean get_uri_part(const gchar *start, const gchar *scanpos,
 700                              const gchar **bp, const gchar **ep)
 701 {
 702         const gchar *ep_;
 703
 704         g_return_val_if_fail(start != NULL, FALSE);
 705         g_return_val_if_fail(scanpos != NULL, FALSE);
 706         g_return_val_if_fail(bp != NULL, FALSE);
 707         g_return_val_if_fail(ep != NULL, FALSE);
 708
 709         *bp = scanpos;
 710
 711         /* find end point of URI */
 712         for (ep_ = scanpos; *ep_ != '\0'; ep_++) {
 713                 if (!isgraph(*ep_) || !isascii(*ep_) || strchr("()<>\"", *ep_))
 714                         break;
 715         }
 716
 717         /* no punctuation at end of string */
 718
 719         /* FIXME: this stripping of trailing punctuations may bite with other URIs.
 720          * should pass some URI type to this function and decide on that whether
 721          * to perform punctuation stripping */
 722
 723 #define IS_REAL_PUNCT(ch)       (ispunct(ch) && ((ch) != '/'))
 724
 725         for (; ep_ - 1 > scanpos + 1 && IS_REAL_PUNCT(*(ep_ - 1)); ep_--)
 726                 ;
 727
 728 #undef IS_REAL_PUNCT
 729
 730         *ep = ep_;
 731
 732         return TRUE;
 733 }
 734
 735 static gchar *make_uri_string(const gchar *bp, const gchar *ep)
 736 {
 737         return g_strndup(bp, ep - bp);
 738 }
 739
 740 /* valid mail address characters */
 741 #define IS_RFC822_CHAR(ch) \
 742         (isascii(ch) && \
 743          (ch) > 32   && \
 744          (ch) != 127 && \
 745          !isspace(ch) && \
 746          !strchr("(),;<>\"", (ch)))
 747
 748 /* alphabet and number within 7bit ASCII */
 749 #define IS_ASCII_ALNUM(ch)      (isascii(ch) && isalnum(ch))
 750 #define IS_QUOTE(ch) ((ch) == '\'' || (ch) == '"')
 751
 752 /* get_email_part() - retrieves an email address. Returns TRUE if succesful */
 753 static gboolean get_email_part(const gchar *start, const gchar *scanpos,
 754                                const gchar **bp, const gchar **ep)
 755 {
 756         /* more complex than the uri part because we need to scan back and forward starting from
 757          * the scan position. */
 758         gboolean result = FALSE;
 759         const gchar *bp_ = NULL;
 760         const gchar *ep_ = NULL;
 761
 762         /* the informative part of the email address (describing the name
 763          * of the email address owner) may contain quoted parts. the
 764          * closure stack stores the last encountered quotes. */
 765         gchar closure_stack[128];
 766         gchar *ptr = closure_stack;
 767
 768         g_return_val_if_fail(start != NULL, FALSE);
 769         g_return_val_if_fail(scanpos != NULL, FALSE);
 770         g_return_val_if_fail(bp != NULL, FALSE);
 771         g_return_val_if_fail(ep != NULL, FALSE);
 772
 773         /* scan start of address */
 774         for (bp_ = scanpos - 1; bp_ >= start && IS_RFC822_CHAR(*bp_); bp_--)
 775                 ;
 776
 777         /* TODO: should start with an alnum? */
 778         bp_++;
 779         for (; bp_ < scanpos && !IS_ASCII_ALNUM(*bp_); bp_++)
 780                 ;
 781
 782         if (bp_ != scanpos) {
 783                 /* scan end of address */
 784                 for (ep_ = scanpos + 1; *ep_ && IS_RFC822_CHAR(*ep_); ep_++)
 785                         ;
 786
 787                 /* TODO: really should terminate with an alnum? */
 788                 for (; ep_ > scanpos && !IS_ASCII_ALNUM(*ep_); --ep_)
 789                         ;
 790                 ep_++;
 791
 792                 if (ep_ > scanpos + 1) {
 793                         *ep = ep_;
 794                         *bp = bp_;
 795                         result = TRUE;
 796                 }
 797         }
 798
 799         if (!result) return FALSE;
 800
 801         /* skip if it's between quotes "'alfons@proteus.demon.nl'" <alfons@proteus.demon.nl> */
 802         if (bp_ - 1 > start && IS_QUOTE(*(bp_ - 1)) && IS_QUOTE(*ep_))
 803                 return FALSE;
 804
 805         /* see if this is <bracketed>; in this case we also scan for the informative part. */
 806         if (bp_ - 1 <= start || *(bp_ - 1) != '<' || *ep_ != '>')
 807                 return TRUE;
 808
 809 #define FULL_STACK()    ((size_t) (ptr - closure_stack) >= sizeof closure_stack)
 810 #define IN_STACK()      (ptr > closure_stack)
 811 /* has underrun check */
 812 #define POP_STACK()     if(IN_STACK()) --ptr
 813 /* has overrun check */
 814 #define PUSH_STACK(c)   if(!FULL_STACK()) *ptr++ = (c); else return TRUE
 815 /* has underrun check */
 816 #define PEEK_STACK()    (IN_STACK() ? *(ptr - 1) : 0)
 817
 818         ep_++;
 819
 820         /* scan for the informative part. */
 821         for (bp_ -= 2; bp_ >= start; bp_--) {
 822                 /* if closure on the stack keep scanning */
 823                 if (PEEK_STACK() == *bp_) {
 824                         POP_STACK();
 825                         continue;
 826                 }
 827                 if (*bp_ == '\'' || *bp_ == '"') {
 828                         PUSH_STACK(*bp_);
 829                         continue;
 830                 }
 831
 832                 /* if nothing in the closure stack, do the special conditions
 833                  * the following if..else expression simply checks whether
 834                  * a token is acceptable. if not acceptable, the clause
 835                  * should terminate the loop with a 'break' */
 836                 if (!PEEK_STACK()) {
 837                         if (*bp_ == '-'
 838                         && (((bp_ - 1) >= start) && isalnum(*(bp_ - 1)))
 839                         && (((bp_ + 1) < ep_)    && isalnum(*(bp_ + 1)))) {
 840                                 /* hyphens are allowed, but only in
 841                                    between alnums */
 842                         } else if (!ispunct(*bp_)) {
 843                                 /* but anything not being a punctiation
 844                                    is ok */
 845                         } else {
 846                                 break; /* anything else is rejected */
 847                         }
 848                 }
 849         }
 850
 851         bp_++;
 852
 853 #undef PEEK_STACK
 854 #undef PUSH_STACK
 855 #undef POP_STACK
 856 #undef IN_STACK
 857 #undef FULL_STACK
 858
 859         /* scan forward (should start with an alnum) */
 860         for (; *bp_ != '<' && isspace(*bp_) && *bp_ != '"'; bp_++)
 861                 ;
 862
 863         *ep = ep_;
 864         *bp = bp_;
 865
 866         return result;
 867 }
 868
 869 #undef IS_QUOTE
 870 #undef IS_RFC822_CHAR
 871
 872 static gchar *make_email_string(const gchar *bp, const gchar *ep)
 873 {
 874         /* returns a mailto: URI; mailto: is also used to detect the
 875          * uri type later on in the button_pressed signal handler */
 876         gchar *tmp;
 877         gchar *result;
 878
 879         tmp = g_strndup(bp, ep - bp);
 880         result = g_strconcat("mailto:", tmp, NULL);
 881         g_free(tmp);
 882
 883         return result;
 884 }
 885
 886 #define ADD_TXT_POS(bp_, ep_, pti_) \
 887         if ((last->next = alloca(sizeof(struct txtpos))) != NULL) { \
 888                 last = last->next; \
 889                 last->bp = (bp_); last->ep = (ep_); last->pti = (pti_); \
 890                 last->next = NULL; \
 891         } else { \
 892                 g_warning("alloc error scanning URIs\n"); \
 893                 gtk_stext_insert(text, textview->msgfont, fg_color, NULL, \
 894                                 linebuf, -1); \
 895                 return; \
 896         }
 897
 898 /* textview_make_clickable_parts() - colorizes clickable parts */
 899 static void textview_make_clickable_parts(TextView *textview,
 900                                           GdkFont *font,
 901                                           GdkColor *fg_color,
 902                                           GdkColor *uri_color,
 903                                           const gchar *linebuf)
 904 {
 905         /* parse table - in order of priority */
 906         struct table {
 907                 const gchar *needle; /* token */
 908
 909                 /* token search function */
 910                 gchar    *(*search)     (const gchar *haystack,
 911                                          const gchar *needle);
 912                 /* part parsing function */
 913                 gboolean  (*parse)      (const gchar *start,
 914                                          const gchar *scanpos,
 915                                          const gchar **bp_,
 916                                          const gchar **ep_);
 917                 /* part to URI function */
 918                 gchar    *(*build_uri)  (const gchar *bp,
 919                                          const gchar *ep);
 920         };
 921
 922         static struct table parser[] = {
 923                 {"http://",  strcasestr, get_uri_part,   make_uri_string},
 924                 {"https://", strcasestr, get_uri_part,   make_uri_string},
 925                 {"www.",     strcasestr, get_uri_part,   make_uri_string},
 926                 {"ftp://",   strcasestr, get_uri_part,   make_uri_string},
 927                 {"mailto:",  strcasestr, get_uri_part,   make_uri_string},
 928                 {"@",        strcasestr, get_email_part, make_email_string}
 929         };
 930         const gint PARSE_ELEMS = sizeof parser / sizeof parser[0];
 931
 932         gint  n;
 933         const gchar *walk, *bp, *ep;
 934
 935         struct txtpos {
 936                 const gchar     *bp, *ep;       /* text position */
 937                 gint             pti;           /* index in parse table */
 938                 struct txtpos   *next;          /* next */
 939         } head = {NULL, NULL, 0,  NULL}, *last = &head;
 940
 941         GtkSText *text = GTK_STEXT(textview->text);
 942
 943         /* parse for clickable parts, and build a list of begin and end positions  */
 944         for (walk = linebuf, n = 0;;) {
 945                 gint last_index = PARSE_ELEMS;
 946                 gchar *scanpos = NULL;
 947
 948                 /* FIXME: this looks phony. scanning for anything in the parse table */
 949                 for (n = 0; n < PARSE_ELEMS; n++) {
 950                         gchar *tmp;
 951
 952                         tmp = parser[n].search(walk, parser[n].needle);
 953                         if (tmp) {
 954                                 if (scanpos == NULL || tmp < scanpos) {
 955                                         scanpos = tmp;
 956                                         last_index = n;
 957                                 }
 958                         }
 959                 }
 960
 961                 if (scanpos) {
 962                         /* check if URI can be parsed */
 963                         if (parser[last_index].parse(linebuf, scanpos, &bp, &ep)
 964                             && (size_t) (ep - bp - 1) > strlen(parser[last_index].needle)) {
 965                                         ADD_TXT_POS(bp, ep, last_index);
 966                                         walk = ep;
 967                         } else
 968                                 walk = scanpos +
 969                                         strlen(parser[last_index].needle);
 970                 } else
 971                         break;
 972         }
 973
 974         /* colorize this line */
 975         if (head.next) {
 976                 const gchar *normal_text = linebuf;
 977
 978                 /* insert URIs */
 979                 for (last = head.next; last != NULL;
 980                      normal_text = last->ep, last = last->next) {
 981                         RemoteURI *uri;
 982
 983                         uri = g_new(RemoteURI, 1);
 984                         if (last->bp - normal_text > 0)
 985                                 gtk_stext_insert(text, font,
 986                                                 fg_color, NULL,
 987                                                 normal_text,
 988                                                 last->bp - normal_text);
 989                         uri->uri = parser[last->pti].build_uri(last->bp,
 990                                                                last->ep);
 991                         uri->start = gtk_stext_get_point(text);
 992                         gtk_stext_insert(text, font, uri_color,
 993                                         NULL, last->bp, last->ep - last->bp);
 994                         uri->end = gtk_stext_get_point(text);
 995                         textview->uri_list =
 996                                 g_slist_append(textview->uri_list, uri);
 997                 }
 998
 999                 if (*normal_text)
1000                         gtk_stext_insert(text, font, fg_color,
1001                                         NULL, normal_text, -1);
1002         } else
1003                 gtk_stext_insert(text, font, fg_color, NULL, linebuf, -1);
1004 }
1005
1006 #undef ADD_TXT_POS
1007
1008 /* This function writes str as a double-clickable link with the given url. */
1009 static void textview_write_link(TextView *textview, const gchar *url,
1010                                 const gchar *str, CodeConverter *conv)
1011 {
1012     GdkColor *link_color = NULL;
1013     RemoteURI* uri;
1014     GtkSText *text = GTK_STEXT(textview->text);
1015     gchar buf[BUFFSIZE];
1016
1017     /* this part is taken from textview_write_line. Right now the only place
1018      * that calls this function passes NULL for conv, but you never know. */
1019 #if 0
1020     if (!conv)
1021             strncpy2(buf, str, sizeof(buf));
1022     else if (conv_convert(conv, buf, sizeof(buf), str) < 0) {
1023             gtk_stext_insert(text, textview->msgfont,
1024                             prefs_common.enable_color
1025                             ? &error_color : NULL, NULL,
1026                             "*** Warning: code conversion failed ***\n",
1027                             -1);
1028             return;
1029     }
1030 #endif
1031
1032     if (!conv || conv_convert(conv, buf, sizeof(buf), str) < 0)
1033         strncpy2(buf, str, sizeof(buf));
1034
1035     strcrchomp(buf);
1036     gtk_stext_insert(text, textview->msgfont, NULL, NULL, " ", 1);
1037
1038     /* this part is based on the code in make_clickable_parts */
1039     if (prefs_common.enable_color) {
1040         link_color = &uri_color;
1041     }
1042     uri = g_new(RemoteURI, 1);
1043     uri->uri = g_strdup(url);
1044     uri->start = gtk_stext_get_point(text);
1045     gtk_stext_insert(text, textview->msgfont, link_color, NULL, str,
1046                     strlen(str));
1047     uri->end = gtk_stext_get_point(text);
1048     textview->uri_list = g_slist_append(textview->uri_list, uri);
1049 }
1050
1051 static void textview_write_line(TextView *textview, const gchar *str,
1052                                 CodeConverter *conv)
1053 {
1054         GtkSText *text = GTK_STEXT(textview->text);
1055         gchar buf[BUFFSIZE];
1056         GdkColor *fg_color;
1057         gint quotelevel = -1;
1058
1059 #if 0
1060         if (!conv)
1061                 strncpy2(buf, str, sizeof(buf));
1062         else if (conv_convert(conv, buf, sizeof(buf), str) < 0) {
1063                 gtk_stext_insert(text, textview->msgfont,
1064                                 prefs_common.enable_color
1065                                 ? &error_color : NULL, NULL,
1066                                 "*** Warning: code conversion failed ***\n",
1067                                 -1);
1068                 return;
1069         }
1070 #endif
1071         if (!conv || conv_convert(conv, buf, sizeof(buf), str) < 0)
1072                 strncpy2(buf, str, sizeof(buf));
1073
1074         strcrchomp(buf);
1075         if (prefs_common.conv_mb_alnum) conv_mb_alnum(buf);
1076         fg_color = NULL;
1077
1078         /* change color of quotation
1079            >, foo>, _> ... ok, <foo>, foo bar>, foo-> ... ng
1080            Up to 3 levels of quotations are detected, and each
1081            level is colored using a different color. */
1082         if (prefs_common.enable_color
1083             && line_has_quote_char(buf, prefs_common.quote_chars)) {
1084                 quotelevel = get_quote_level(buf, prefs_common.quote_chars);
1085
1086                 /* set up the correct foreground color */
1087                 if (quotelevel > 2) {
1088                         /* recycle colors */
1089                         if (prefs_common.recycle_quote_colors)
1090                                 quotelevel %= 3;
1091                         else
1092                                 quotelevel = 2;
1093                 }
1094         }
1095
1096         if (quotelevel == -1)
1097                 fg_color = NULL;
1098         else
1099                 fg_color = &quote_colors[quotelevel];
1100
1101         if (prefs_common.enable_color && (strcmp(buf,"-- \n") == 0 || textview->is_in_signature)) {
1102                 fg_color = &signature_color;
1103                 textview->is_in_signature = TRUE;
1104         }
1105
1106         if (prefs_common.head_space && spacingfont && buf[0] != '\n')
1107                 gtk_stext_insert(text, spacingfont, NULL, NULL, " ", 1);
1108
1109         if (prefs_common.enable_color)
1110                 textview_make_clickable_parts(textview, textview->msgfont,
1111                                               fg_color, &uri_color, buf);
1112         else
1113                 textview_make_clickable_parts(textview, textview->msgfont,
1114                                               fg_color, NULL, buf);
1115 }
1116
1117 void textview_clear(TextView *textview)
1118 {
1119         GtkSText *text = GTK_STEXT(textview->text);
1120
1121         gtk_stext_freeze(text);
1122         gtk_stext_set_point(text, 0);
1123         gtk_stext_forward_delete(text, gtk_stext_get_length(text));
1124         gtk_stext_thaw(text);
1125
1126         textview_uri_list_remove_all(textview->uri_list);
1127         textview->uri_list = NULL;
1128
1129         textview->body_pos = 0;
1130         textview->cur_pos  = 0;
1131 }
1132
1133 void textview_destroy(TextView *textview)
1134 {
1135         textview_uri_list_remove_all(textview->uri_list);
1136         textview->uri_list = NULL;
1137
1138         if (!textview->scrolledwin_sb->parent)
1139                 gtk_widget_destroy(textview->scrolledwin_sb);
1140         if (!textview->scrolledwin_mb->parent)
1141                 gtk_widget_destroy(textview->scrolledwin_mb);
1142
1143         if (textview->msgfont)
1144                 gdk_font_unref(textview->msgfont);
1145         if (textview->boldfont)
1146                 gdk_font_unref(textview->boldfont);
1147
1148         g_free(textview);
1149 }
1150
1151 void textview_set_all_headers(TextView *textview, gboolean all_headers)
1152 {
1153         textview->show_all_headers = all_headers;
1154 }
1155
1156 void textview_set_font(TextView *textview, const gchar *codeset)
1157 {
1158         gboolean use_fontset = TRUE;
1159
1160         /* In multi-byte mode, GtkSText can't display 8bit characters
1161            correctly, so it must be single-byte mode. */
1162         if (MB_CUR_MAX > 1) {
1163                 if (codeset) {
1164                         if (!g_strncasecmp(codeset, "ISO-8859-", 9) ||
1165                             !g_strcasecmp(codeset, "BALTIC"))
1166                                 use_fontset = FALSE;
1167                         else if (conv_get_current_charset() != C_EUC_JP &&
1168                                  (!g_strncasecmp(codeset, "KOI8-", 5) ||
1169                                   !g_strncasecmp(codeset, "CP", 2)    ||
1170                                   !g_strncasecmp(codeset, "WINDOWS-", 8)))
1171                                 use_fontset = FALSE;
1172                 }
1173         } else
1174                 use_fontset = FALSE;
1175
1176         if (textview->text_is_mb && !use_fontset) {
1177                 GtkWidget *parent;
1178
1179                 parent = textview->scrolledwin_mb->parent;
1180                 gtkut_container_remove(GTK_CONTAINER(parent),
1181                                        textview->scrolledwin_mb);
1182                 gtk_container_add(GTK_CONTAINER(parent),
1183                                   textview->scrolledwin_sb);
1184
1185                 textview->text = textview->text_sb;
1186                 textview->text_is_mb = FALSE;
1187         } else if (!textview->text_is_mb && use_fontset) {
1188                 GtkWidget *parent;
1189
1190                 parent = textview->scrolledwin_sb->parent;
1191                 gtkut_container_remove(GTK_CONTAINER(parent),
1192                                        textview->scrolledwin_sb);
1193                 gtk_container_add(GTK_CONTAINER(parent),
1194                                   textview->scrolledwin_mb);
1195
1196                 textview->text = textview->text_mb;
1197                 textview->text_is_mb = TRUE;
1198         }
1199
1200         if (prefs_common.textfont) {
1201                 GdkFont *font;
1202
1203                 if (use_fontset) {
1204                         if (text_mb_font) {
1205                                 text_mb_font->ascent = text_mb_font_orig_ascent;
1206                                 text_mb_font->descent = text_mb_font_orig_descent;
1207                         }
1208                         font = gdk_fontset_load(prefs_common.textfont);
1209                         if (font && text_mb_font != font) {
1210                                 if (text_mb_font)
1211                                         gdk_font_unref(text_mb_font);
1212                                 text_mb_font = font;
1213                                 text_mb_font_orig_ascent = font->ascent;
1214                                 text_mb_font_orig_descent = font->descent;
1215                         }
1216                 } else {
1217                         if (text_sb_font) {
1218                                 text_sb_font->ascent = text_sb_font_orig_ascent;
1219                                 text_sb_font->descent = text_sb_font_orig_descent;
1220                         }
1221                         if (MB_CUR_MAX > 1)
1222                                 font = gdk_font_load("-*-courier-medium-r-normal--14-*-*-*-*-*-iso8859-1");
1223                         else
1224                                 font = gtkut_font_load_from_fontset
1225                                         (prefs_common.textfont);
1226                         if (font && text_sb_font != font) {
1227                                 if (text_sb_font)
1228                                         gdk_font_unref(text_sb_font);
1229                                 text_sb_font = font;
1230                                 text_sb_font_orig_ascent = font->ascent;
1231                                 text_sb_font_orig_descent = font->descent;
1232                         }
1233                 }
1234
1235                 if (font) {
1236                         gint ascent, descent;
1237
1238                         descent = prefs_common.line_space / 2;
1239                         ascent  = prefs_common.line_space - descent;
1240                         font->ascent  += ascent;
1241                         font->descent += descent;
1242
1243                         if (textview->msgfont)
1244                                 gdk_font_unref(textview->msgfont);
1245                         textview->msgfont = font;
1246                         gdk_font_ref(font);
1247                 }
1248         }
1249
1250         if (!textview->boldfont && prefs_common.boldfont)
1251                 textview->boldfont = gtkut_font_load(prefs_common.boldfont);
1252         if (!spacingfont)
1253                 spacingfont = gdk_font_load("-*-*-medium-r-normal--6-*");
1254 }
1255
1256 enum
1257 {
1258         H_DATE          = 0,
1259         H_FROM          = 1,
1260         H_TO            = 2,
1261         H_NEWSGROUPS    = 3,
1262         H_SUBJECT       = 4,
1263         H_CC            = 5,
1264         H_REPLY_TO      = 6,
1265         H_FOLLOWUP_TO   = 7,
1266         H_X_MAILER      = 8,
1267         H_X_NEWSREADER  = 9,
1268         H_USER_AGENT    = 10,
1269         H_ORGANIZATION  = 11,
1270 };
1271
1272 void textview_set_position(TextView *textview, gint pos)
1273 {
1274         if (pos < 0) {
1275                 textview->cur_pos =
1276                         gtk_stext_get_length(GTK_STEXT(textview->text));
1277         } else {
1278                 textview->cur_pos = pos;
1279         }
1280 }
1281
1282 static GPtrArray *textview_scan_header(TextView *textview, FILE *fp)
1283 {
1284         gchar buf[BUFFSIZE];
1285         GPtrArray *headers, *sorted_headers;
1286         GSList *disphdr_list;
1287         Header *header;
1288         gint i;
1289
1290         g_return_val_if_fail(fp != NULL, NULL);
1291
1292         if (textview->show_all_headers)
1293                 return procheader_get_header_array_asis(fp);
1294
1295         if (!prefs_common.display_header) {
1296                 while (fgets(buf, sizeof(buf), fp) != NULL)
1297                         if (buf[0] == '\r' || buf[0] == '\n') break;
1298                 return NULL;
1299         }
1300
1301         headers = procheader_get_header_array_asis(fp);
1302
1303         sorted_headers = g_ptr_array_new();
1304
1305         for (disphdr_list = prefs_common.disphdr_list; disphdr_list != NULL;
1306              disphdr_list = disphdr_list->next) {
1307                 DisplayHeaderProp *dp =
1308                         (DisplayHeaderProp *)disphdr_list->data;
1309
1310                 for (i = 0; i < headers->len; i++) {
1311                         header = g_ptr_array_index(headers, i);
1312
1313                         if (procheader_headername_equal(header->name,
1314                                                         dp->name)) {
1315                                 if (dp->hidden)
1316                                         procheader_header_free(header);
1317                                 else
1318                                         g_ptr_array_add(sorted_headers, header);
1319
1320                                 g_ptr_array_remove_index(headers, i);
1321                                 i--;
1322                         }
1323                 }
1324         }
1325
1326         if (prefs_common.show_other_header) {
1327                 for (i = 0; i < headers->len; i++) {
1328                         header = g_ptr_array_index(headers, i);
1329                         g_ptr_array_add(sorted_headers, header);
1330                 }
1331                 g_ptr_array_free(headers, TRUE);
1332         } else
1333                 procheader_header_array_destroy(headers);
1334
1335         return sorted_headers;
1336 }
1337
1338 static void textview_show_header(TextView *textview, GPtrArray *headers)
1339 {
1340         GtkSText *text = GTK_STEXT(textview->text);
1341         Header *header;
1342         gint i;
1343
1344         g_return_if_fail(headers != NULL);
1345
1346         gtk_stext_freeze(text);
1347
1348         for (i = 0; i < headers->len; i++) {
1349                 header = g_ptr_array_index(headers, i);
1350                 g_return_if_fail(header->name != NULL);
1351
1352                 gtk_stext_insert(text, textview->boldfont, NULL, NULL,
1353                                 header->name, -1);
1354                 if (header->name[strlen(header->name) - 1] != ' ')
1355                         gtk_stext_insert(text, textview->boldfont,
1356                                         NULL, NULL, " ", 1);
1357
1358                 if (procheader_headername_equal(header->name, "Subject") ||
1359                     procheader_headername_equal(header->name, "From")    ||
1360                     procheader_headername_equal(header->name, "To")      ||
1361                     procheader_headername_equal(header->name, "Cc"))
1362                         unfold_line(header->body);
1363
1364                 if (prefs_common.enable_color &&
1365                     (procheader_headername_equal(header->name, "X-Mailer") ||
1366                      procheader_headername_equal(header->name,
1367                                                  "X-Newsreader")) &&
1368                     strstr(header->body, "Sylpheed") != NULL)
1369                         gtk_stext_insert(text, NULL, &emphasis_color, NULL,
1370                                         header->body, -1);
1371                 else if (prefs_common.enable_color) {
1372                         textview_make_clickable_parts(textview,
1373                                                       NULL, NULL, &uri_color,
1374                                                       header->body);
1375                 } else {
1376                         textview_make_clickable_parts(textview,
1377                                                       NULL, NULL, NULL,
1378                                                       header->body);
1379                 }
1380                 gtk_stext_insert(text, textview->msgfont, NULL, NULL, "\n", 1);
1381         }
1382
1383         gtk_stext_thaw(text);
1384 }
1385
1386 gboolean textview_search_string(TextView *textview, const gchar *str,
1387                                 gboolean case_sens)
1388 {
1389         GtkSText *text = GTK_STEXT(textview->text);
1390         gint pos;
1391         wchar_t *wcs;
1392         gint len;
1393         gint text_len;
1394         gboolean found = FALSE;
1395
1396         g_return_val_if_fail(str != NULL, FALSE);
1397
1398         wcs = strdup_mbstowcs(str);
1399         g_return_val_if_fail(wcs != NULL, FALSE);
1400         len = wcslen(wcs);
1401         pos = textview->cur_pos;
1402         if (pos < textview->body_pos)
1403                 pos = textview->body_pos;
1404         text_len = gtk_stext_get_length(text);
1405         if (text_len - pos < len) {
1406                 g_free(wcs);
1407                 return FALSE;
1408         }
1409
1410         for (; pos < text_len; pos++) {
1411                 if (text_len - pos < len) break;
1412                 if (gtkut_stext_match_string(text, pos, wcs, len, case_sens)
1413                     == TRUE) {
1414                         gtk_widget_hide(GTK_WIDGET(textview->scrolledwin));
1415                         gtk_editable_set_position(GTK_EDITABLE(text),
1416                                                   pos + len);
1417                         gtk_editable_select_region(GTK_EDITABLE(text),
1418                                                    pos, pos + len);
1419                         gtk_widget_show(GTK_WIDGET(textview->scrolledwin));
1420                         textview_set_position(textview, pos + len);
1421                         found = TRUE;
1422                         break;
1423                 }
1424                 if (text_len - pos == len) break;
1425         }
1426         g_free(wcs);
1427         return found;
1428 }
1429
1430 gboolean textview_search_string_backward(TextView *textview, const gchar *str,
1431                                          gboolean case_sens)
1432 {
1433         GtkSText *text = GTK_STEXT(textview->text);
1434         gint pos;
1435         wchar_t *wcs;
1436         gint len;
1437         gint text_len;
1438         gboolean found = FALSE;
1439
1440         g_return_val_if_fail(str != NULL, FALSE);
1441
1442         wcs = strdup_mbstowcs(str);
1443         g_return_val_if_fail(wcs != NULL, FALSE);
1444         len = wcslen(wcs);
1445         pos = textview->cur_pos;
1446         text_len = gtk_stext_get_length(text);
1447         if (text_len - textview->body_pos < len) {
1448                 g_free(wcs);
1449                 return FALSE;
1450         }
1451         if (pos <= textview->body_pos || text_len - pos < len)
1452                 pos = text_len - len;
1453
1454         for (; pos >= textview->body_pos; pos--) {
1455                 if (gtkut_stext_match_string(text, pos, wcs, len, case_sens)
1456                     == TRUE) {
1457                         gtk_editable_set_position(GTK_EDITABLE(text), pos);
1458                         gtk_editable_select_region(GTK_EDITABLE(text),
1459                                                    pos, pos + len);
1460                         textview_set_position(textview, pos - 1);
1461                         found = TRUE;
1462                         break;
1463                 }
1464                 if (pos == textview->body_pos) break;
1465         }
1466
1467         g_free(wcs);
1468         return found;
1469 }
1470
1471 void textview_scroll_one_line(TextView *textview, gboolean up)
1472 {
1473         GtkSText *text = GTK_STEXT(textview->text);
1474         gfloat upper;
1475
1476         if (prefs_common.enable_smooth_scroll) {
1477                 textview_smooth_scroll_one_line(textview, up);
1478                 return;
1479         }
1480
1481         if (!up) {
1482                 upper = text->vadj->upper - text->vadj->page_size;
1483                 if (text->vadj->value < upper) {
1484                         text->vadj->value +=
1485                                 text->vadj->step_increment * 4;
1486                         text->vadj->value =
1487                                 MIN(text->vadj->value, upper);
1488                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1489                                                 "value_changed");
1490                 }
1491         } else {
1492                 if (text->vadj->value > 0.0) {
1493                         text->vadj->value -=
1494                                 text->vadj->step_increment * 4;
1495                         text->vadj->value =
1496                                 MAX(text->vadj->value, 0.0);
1497                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1498                                                 "value_changed");
1499                 }
1500         }
1501 }
1502
1503 gboolean textview_scroll_page(TextView *textview, gboolean up)
1504 {
1505         GtkSText *text = GTK_STEXT(textview->text);
1506         gfloat upper;
1507         gfloat page_incr;
1508
1509         if (prefs_common.enable_smooth_scroll)
1510                 return textview_smooth_scroll_page(textview, up);
1511
1512         if (prefs_common.scroll_halfpage)
1513                 page_incr = text->vadj->page_increment / 2;
1514         else
1515                 page_incr = text->vadj->page_increment;
1516
1517         if (!up) {
1518                 upper = text->vadj->upper - text->vadj->page_size;
1519                 if (text->vadj->value < upper) {
1520                         text->vadj->value += page_incr;
1521                         text->vadj->value = MIN(text->vadj->value, upper);
1522                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1523                                                 "value_changed");
1524                 } else
1525                         return FALSE;
1526         } else {
1527                 if (text->vadj->value > 0.0) {
1528                         text->vadj->value -= page_incr;
1529                         text->vadj->value = MAX(text->vadj->value, 0.0);
1530                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1531                                                 "value_changed");
1532                 } else
1533                         return FALSE;
1534         }
1535
1536         return TRUE;
1537 }
1538
1539 static void textview_smooth_scroll_do(TextView *textview,
1540                                       gfloat old_value, gfloat last_value,
1541                                       gint step)
1542 {
1543         GtkSText *text = GTK_STEXT(textview->text);
1544         gint change_value;
1545         gboolean up;
1546         gint i;
1547
1548         if (old_value < last_value) {
1549                 change_value = last_value - old_value;
1550                 up = FALSE;
1551         } else {
1552                 change_value = old_value - last_value;
1553                 up = TRUE;
1554         }
1555
1556         gdk_key_repeat_disable();
1557
1558         for (i = step; i <= change_value; i += step) {
1559                 text->vadj->value = old_value + (up ? -i : i);
1560                 gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1561                                         "value_changed");
1562         }
1563
1564         text->vadj->value = last_value;
1565         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj), "value_changed");
1566
1567         gdk_key_repeat_restore();
1568 }
1569
1570 static void textview_smooth_scroll_one_line(TextView *textview, gboolean up)
1571 {
1572         GtkSText *text = GTK_STEXT(textview->text);
1573         gfloat upper;
1574         gfloat old_value;
1575         gfloat last_value;
1576
1577         if (!up) {
1578                 upper = text->vadj->upper - text->vadj->page_size;
1579                 if (text->vadj->value < upper) {
1580                         old_value = text->vadj->value;
1581                         last_value = text->vadj->value +
1582                                 text->vadj->step_increment * 4;
1583                         last_value = MIN(last_value, upper);
1584
1585                         textview_smooth_scroll_do(textview, old_value,
1586                                                   last_value,
1587                                                   prefs_common.scroll_step);
1588                 }
1589         } else {
1590                 if (text->vadj->value > 0.0) {
1591                         old_value = text->vadj->value;
1592                         last_value = text->vadj->value -
1593                                 text->vadj->step_increment * 4;
1594                         last_value = MAX(last_value, 0.0);
1595
1596                         textview_smooth_scroll_do(textview, old_value,
1597                                                   last_value,
1598                                                   prefs_common.scroll_step);
1599                 }
1600         }
1601 }
1602
1603 static gboolean textview_smooth_scroll_page(TextView *textview, gboolean up)
1604 {
1605         GtkSText *text = GTK_STEXT(textview->text);
1606         gfloat upper;
1607         gfloat page_incr;
1608         gfloat old_value;
1609         gfloat last_value;
1610
1611         if (prefs_common.scroll_halfpage)
1612                 page_incr = text->vadj->page_increment / 2;
1613         else
1614                 page_incr = text->vadj->page_increment;
1615
1616         if (!up) {
1617                 upper = text->vadj->upper - text->vadj->page_size;
1618                 if (text->vadj->value < upper) {
1619                         old_value = text->vadj->value;
1620                         last_value = text->vadj->value + page_incr;
1621                         last_value = MIN(last_value, upper);
1622
1623                         textview_smooth_scroll_do(textview, old_value,
1624                                                   last_value,
1625                                                   prefs_common.scroll_step);
1626                 } else
1627                         return FALSE;
1628         } else {
1629                 if (text->vadj->value > 0.0) {
1630                         old_value = text->vadj->value;
1631                         last_value = text->vadj->value - page_incr;
1632                         last_value = MAX(last_value, 0.0);
1633
1634                         textview_smooth_scroll_do(textview, old_value,
1635                                                   last_value,
1636                                                   prefs_common.scroll_step);
1637                 } else
1638                         return FALSE;
1639         }
1640
1641         return TRUE;
1642 }
1643
1644 #define KEY_PRESS_EVENT_STOP() \
1645         if (gtk_signal_n_emissions_by_name \
1646                 (GTK_OBJECT(widget), "key_press_event") > 0) { \
1647                 gtk_signal_emit_stop_by_name(GTK_OBJECT(widget), \
1648                                              "key_press_event"); \
1649         }
1650
1651 static gint textview_key_pressed(GtkWidget *widget, GdkEventKey *event,
1652                                  TextView *textview)
1653 {
1654         SummaryView *summaryview = NULL;
1655         MessageView *messageview = textview->messageview;
1656
1657         if (!event) return FALSE;
1658         if (messageview->mainwin)
1659                 summaryview = messageview->mainwin->summaryview;
1660
1661         switch (event->keyval) {
1662         case GDK_Tab:
1663         case GDK_Home:
1664         case GDK_Left:
1665         case GDK_Up:
1666         case GDK_Right:
1667         case GDK_Down:
1668         case GDK_Page_Up:
1669         case GDK_Page_Down:
1670         case GDK_End:
1671         case GDK_Control_L:
1672         case GDK_Control_R:
1673                 break;
1674         case GDK_space:
1675                 if (summaryview)
1676                         summary_pass_key_press_event(summaryview, event);
1677                 else
1678                         textview_scroll_page(textview, FALSE);
1679                 break;
1680         case GDK_BackSpace:
1681                 textview_scroll_page(textview, TRUE);
1682                 break;
1683         case GDK_Return:
1684                 textview_scroll_one_line(textview,
1685                                          (event->state & GDK_MOD1_MASK) != 0);
1686                 break;
1687         case GDK_Delete:
1688                 if (summaryview)
1689                         summary_pass_key_press_event(summaryview, event);
1690                 break;
1691         case GDK_n:
1692         case GDK_N:
1693         case GDK_p:
1694         case GDK_P:
1695         case GDK_y:
1696         case GDK_t:
1697         case GDK_l:
1698                 if (messageview->type == MVIEW_MIME &&
1699                     textview == messageview->mimeview->textview) {
1700                         KEY_PRESS_EVENT_STOP();
1701                         mimeview_pass_key_press_event(messageview->mimeview,
1702                                                       event);
1703                         break;
1704                 }
1705                 /* fall through */
1706         default:
1707                 if (summaryview &&
1708                     event->window != messageview->mainwin->window->window) {
1709                         GdkEventKey tmpev = *event;
1710
1711                         tmpev.window = messageview->mainwin->window->window;
1712                         KEY_PRESS_EVENT_STOP();
1713                         gtk_widget_event(messageview->mainwin->window,
1714                                          (GdkEvent *)&tmpev);
1715                 }
1716                 break;
1717         }
1718
1719         return TRUE;
1720 }
1721
1722 static gint show_url_timeout_cb(gpointer data)
1723 {
1724         TextView *textview = (TextView *)data;
1725
1726         if (textview->messageview->mainwin)
1727                 if (textview->show_url_msgid)
1728                         gtk_statusbar_remove(GTK_STATUSBAR(
1729                                 textview->messageview->mainwin->statusbar),
1730                                 textview->messageview->mainwin->folderview_cid,
1731                                 textview->show_url_msgid);
1732                 return FALSE;
1733 }
1734
1735 static gint textview_button_pressed(GtkWidget *widget, GdkEventButton *event,
1736                                     TextView *textview)
1737 {
1738         if (event)
1739                 textview->last_buttonpress = event->type;
1740         return FALSE;
1741 }
1742
1743 static gint textview_button_released(GtkWidget *widget, GdkEventButton *event,
1744                                     TextView *textview)
1745 {
1746         textview->cur_pos =
1747                 gtk_editable_get_position(GTK_EDITABLE(textview->text));
1748
1749         if (event &&
1750             ((event->button == 1)
1751              || event->button == 2 || event->button == 3)) {
1752                 GSList *cur;
1753
1754                 /* double click seems to set the cursor after the current
1755                  * word. The cursor position needs fixing, otherwise the
1756                  * last word of a clickable zone will not work */
1757                 if (event->button == 1 && textview->last_buttonpress == GDK_2BUTTON_PRESS) {
1758                         textview->cur_pos--;
1759                 }
1760
1761                 for (cur = textview->uri_list; cur != NULL; cur = cur->next) {
1762                         RemoteURI *uri = (RemoteURI *)cur->data;
1763
1764                         if (textview->cur_pos >= uri->start &&
1765                             textview->cur_pos <  uri->end) {
1766                                 /* single click: display url in statusbar */
1767                                 if (event->button == 1 && textview->last_buttonpress != GDK_2BUTTON_PRESS) {
1768                                         if (textview->messageview->mainwin) {
1769                                                 if (textview->show_url_msgid) {
1770                                                         gtk_timeout_remove(textview->show_url_timeout_tag);
1771                                                         gtk_statusbar_remove(GTK_STATUSBAR(
1772                                                                 textview->messageview->mainwin->statusbar),
1773                                                                 textview->messageview->mainwin->folderview_cid,
1774                                                                 textview->show_url_msgid);
1775                                                         textview->show_url_msgid = 0;
1776                                                 }
1777                                                 textview->show_url_msgid = gtk_statusbar_push(
1778                                                                 GTK_STATUSBAR(textview->messageview->mainwin->statusbar),
1779                                                                 textview->messageview->mainwin->folderview_cid,
1780                                                                 uri->uri);
1781                                                 textview->show_url_timeout_tag = gtk_timeout_add( 4000, show_url_timeout_cb, textview );
1782                                                 gtkut_widget_wait_for_draw(textview->messageview->mainwin->hbox_stat);
1783                                         }
1784                                 } else
1785                                 if (!g_strncasecmp(uri->uri, "mailto:", 7)) {
1786                                         if (event->button == 3) {
1787                                                 gchar *fromname, *fromaddress;
1788
1789                                                 /* extract url */
1790                                                 fromaddress = g_strdup(uri->uri + 7);
1791                                                 /* Hiroyuki: please put this function in utils.c! */
1792                                                 fromname = procheader_get_fromname(fromaddress);
1793                                                 extract_address(fromaddress);
1794                                                 g_message("adding from textview %s <%s>", fromname, fromaddress);
1795                                                 /* Add to address book - Match */
1796                                                 addressbook_add_contact( fromname, fromaddress, NULL );
1797
1798                                                 g_free(fromaddress);
1799                                                 g_free(fromname);
1800                                         } else {
1801                                                 PrefsAccount *account = NULL;
1802                                                 FolderItem   *folder_item;
1803
1804                                                 if (textview->messageview && textview->messageview->mainwin
1805                                                 &&  textview->messageview->mainwin->summaryview
1806                                                 &&  textview->messageview->mainwin->summaryview->folder_item) {
1807                                                         folder_item = textview->messageview->mainwin->summaryview->folder_item;
1808                                                         if (folder_item->prefs && folder_item->prefs->enable_default_account)
1809                                                                 account = account_find_from_id(folder_item->prefs->default_account);
1810                                                 }
1811                                                 compose_new(account, uri->uri + 7, NULL);
1812                                         }
1813                                 } else
1814 #if USE_GPGME
1815                                 if (!g_strncasecmp(uri->uri, "pgp:", 4)) {
1816                                         GtkAdjustment *pos = gtk_scrolled_window_get_vadjustment(
1817                                                                 GTK_SCROLLED_WINDOW(textview->scrolledwin));
1818                                         gfloat vpos = pos->value;
1819                                         mimeview_check_signature(textview->messageview->mimeview);
1820                                         /* scroll back where we were */
1821                                         gtk_adjustment_set_value(pos, vpos);
1822                                 } else
1823 #endif
1824                                 {
1825                                         open_uri(uri->uri,
1826                                                  prefs_common.uri_cmd);
1827                                 }
1828                         }
1829                 }
1830         }
1831         if (event)
1832                 textview->last_buttonpress = event->type;
1833         return FALSE;
1834 }
1835
1836 static void textview_uri_list_remove_all(GSList *uri_list)
1837 {
1838         GSList *cur;
1839
1840         for (cur = uri_list; cur != NULL; cur = cur->next) {
1841                 if (cur->data) {
1842                         g_free(((RemoteURI *)cur->data)->uri);
1843                         g_free(cur->data);
1844                 }
1845         }
1846
1847         g_slist_free(uri_list);
1848 }