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