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