src/textview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999,2000 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/gtktext.h>
  32 #include <gtk/gtksignal.h>
  33 #include <stdio.h>
  34 #include <ctype.h>
  35 #include <string.h>
  36 #include <stdlib.h>
  37
  38 #include "intl.h"
  39 #include "main.h"
  40 #include "summaryview.h"
  41 #include "procheader.h"
  42 #include "prefs_common.h"
  43 #include "codeconv.h"
  44 #include "utils.h"
  45 #include "gtkutils.h"
  46 #include "procmime.h"
  47 #include "html.h"
  48 #include "compose.h"
  49 #include "addressbook.h"
  50 #include "headers_display.h"
  51 #include "prefs_display_headers.h"
  52
  53 #define FONT_LOAD(font, s) \
  54 { \
  55         gchar *fontstr, *p; \
  56  \
  57         Xstrdup_a(fontstr, s, ); \
  58         if ((p = strchr(fontstr, ',')) != NULL) *p = '\0'; \
  59         font = gdk_font_load(fontstr); \
  60 }
  61
  62 typedef struct _RemoteURI       RemoteURI;
  63
  64 struct _RemoteURI
  65 {
  66         gchar *uri;
  67
  68         guint start;
  69         guint end;
  70 };
  71
  72 static GdkColor quote_colors[3] = {
  73         {(gulong)0, (gushort)0, (gushort)0, (gushort)0},
  74         {(gulong)0, (gushort)0, (gushort)0, (gushort)0},
  75         {(gulong)0, (gushort)0, (gushort)0, (gushort)0}
  76 };
  77
  78 static GdkColor uri_color = {
  79         (gulong)0,
  80         (gushort)0,
  81         (gushort)0,
  82         (gushort)0
  83 };
  84
  85 static GdkColor emphasis_color = {
  86         (gulong)0,
  87         (gushort)0,
  88         (gushort)0,
  89         (gushort)0xcfff
  90 };
  91
  92 static GdkColor error_color = {
  93         (gulong)0,
  94         (gushort)0xefff,
  95         (gushort)0,
  96         (gushort)0
  97 };
  98
  99 static GdkFont *spacingfont;
 100
 101 static void textview_show_html          (TextView       *textview,
 102                                          FILE           *fp,
 103                                          CodeConverter  *conv);
 104 static void textview_write_line         (TextView       *textview,
 105                                          const gchar    *str,
 106                                          CodeConverter  *conv);
 107 static GPtrArray *textview_scan_header  (TextView       *textview,
 108                                          FILE           *fp);
 109 static void textview_show_header        (TextView       *textview,
 110                                          GPtrArray      *headers);
 111
 112 static void textview_key_pressed        (GtkWidget      *widget,
 113                                          GdkEventKey    *event,
 114                                          TextView       *textview);
 115 static void textview_button_pressed     (GtkWidget      *widget,
 116                                          GdkEventButton *event,
 117                                          TextView       *textview);
 118
 119 static void textview_uri_list_remove_all(GSList         *uri_list);
 120
 121 static void textview_smooth_scroll_do           (TextView       *textview,
 122                                                  gfloat          old_value,
 123                                                  gfloat          last_value,
 124                                                  gint            step);
 125 static void textview_smooth_scroll_one_line     (TextView       *textview,
 126                                                  gboolean        up);
 127 static gboolean textview_smooth_scroll_page     (TextView       *textview,
 128                                                  gboolean        up);
 129
 130
 131 TextView *textview_create(void)
 132 {
 133         TextView *textview;
 134         GtkWidget *vbox;
 135         GtkWidget *scrolledwin_sb;
 136         GtkWidget *scrolledwin_mb;
 137         GtkWidget *text_sb;
 138         GtkWidget *text_mb;
 139
 140         debug_print(_("Creating text view...\n"));
 141         textview = g_new0(TextView, 1);
 142
 143         scrolledwin_sb = gtk_scrolled_window_new(NULL, NULL);
 144         scrolledwin_mb = gtk_scrolled_window_new(NULL, NULL);
 145         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin_sb),
 146                                        GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 147         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin_mb),
 148                                        GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 149         gtk_widget_set_usize(scrolledwin_sb, prefs_common.mainview_width, -1);
 150         gtk_widget_set_usize(scrolledwin_mb, prefs_common.mainview_width, -1);
 151
 152         /* create GtkText widgets for single-byte and multi-byte character */
 153         text_sb = gtk_text_new(NULL, NULL);
 154         text_mb = gtk_text_new(NULL, NULL);
 155         gtk_widget_show(text_sb);
 156         gtk_widget_show(text_mb);
 157         gtk_text_set_word_wrap(GTK_TEXT(text_sb), TRUE);
 158         gtk_text_set_word_wrap(GTK_TEXT(text_mb), TRUE);
 159         gtk_widget_ensure_style(text_sb);
 160         gtk_widget_ensure_style(text_mb);
 161         if (text_sb->style && text_sb->style->font->type == GDK_FONT_FONTSET) {
 162                 GtkStyle *style;
 163
 164                 style = gtk_style_copy(text_sb->style);
 165                 gdk_font_unref(style->font);
 166                 FONT_LOAD(style->font, NORMAL_FONT);
 167                 gtk_widget_set_style(text_sb, style);
 168         }
 169         if (text_mb->style && text_mb->style->font->type == GDK_FONT_FONT) {
 170                 GtkStyle *style;
 171
 172                 style = gtk_style_copy(text_mb->style);
 173                 gdk_font_unref(style->font);
 174                 style->font = gdk_fontset_load(NORMAL_FONT);
 175                 gtk_widget_set_style(text_mb, style);
 176         }
 177         gtk_widget_ref(scrolledwin_sb);
 178         gtk_widget_ref(scrolledwin_mb);
 179
 180         gtk_container_add(GTK_CONTAINER(scrolledwin_sb), text_sb);
 181         gtk_container_add(GTK_CONTAINER(scrolledwin_mb), text_mb);
 182         gtk_signal_connect(GTK_OBJECT(text_sb), "key_press_event",
 183                            GTK_SIGNAL_FUNC(textview_key_pressed),
 184                            textview);
 185         gtk_signal_connect(GTK_OBJECT(text_sb), "button_press_event",
 186                            GTK_SIGNAL_FUNC(textview_button_pressed),
 187                            textview);
 188         gtk_signal_connect(GTK_OBJECT(text_mb), "key_press_event",
 189                            GTK_SIGNAL_FUNC(textview_key_pressed),
 190                            textview);
 191         gtk_signal_connect(GTK_OBJECT(text_mb), "button_press_event",
 192                            GTK_SIGNAL_FUNC(textview_button_pressed),
 193                            textview);
 194
 195         gtk_widget_show(scrolledwin_sb);
 196         gtk_widget_show(scrolledwin_mb);
 197
 198         vbox = gtk_vbox_new(FALSE, 0);
 199         gtk_box_pack_start(GTK_BOX(vbox), scrolledwin_sb, TRUE, TRUE, 0);
 200
 201         textview->vbox           = vbox;
 202         textview->scrolledwin    = scrolledwin_sb;
 203         textview->scrolledwin_sb = scrolledwin_sb;
 204         textview->scrolledwin_mb = scrolledwin_mb;
 205         textview->text           = text_sb;
 206         textview->text_sb        = text_sb;
 207         textview->text_mb        = text_mb;
 208         textview->text_is_mb     = FALSE;
 209         textview->uri_list       = NULL;
 210
 211         return textview;
 212 }
 213
 214 void textview_init(TextView *textview)
 215 {
 216         gtkut_widget_disable_theme_engine(textview->text_sb);
 217         gtkut_widget_disable_theme_engine(textview->text_mb);
 218         textview_update_message_colors();
 219         textview_set_font(textview, NULL);
 220 }
 221
 222 void textview_update_message_colors(void)
 223 {
 224         GdkColor black = {0, 0, 0, 0};
 225
 226         if (prefs_common.enable_color) {
 227                 /* grab the quote colors, converting from an int to a GdkColor */
 228                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level1_col,
 229                                                &quote_colors[0]);
 230                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level2_col,
 231                                                &quote_colors[1]);
 232                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level3_col,
 233                                                &quote_colors[2]);
 234                 gtkut_convert_int_to_gdk_color(prefs_common.uri_col,
 235                                                &uri_color);
 236         } else {
 237                 quote_colors[0] = quote_colors[1] = quote_colors[2] =
 238                         uri_color = emphasis_color = black;
 239         }
 240 }
 241
 242 void textview_show_message(TextView *textview, MimeInfo *mimeinfo,
 243                            const gchar *file)
 244 {
 245         FILE *fp;
 246
 247         if ((fp = fopen(file, "r")) == NULL) {
 248                 FILE_OP_ERROR(file, "fopen");
 249                 return;
 250         }
 251
 252         textview_show_part(textview, mimeinfo, fp);
 253
 254         fclose(fp);
 255 }
 256
 257 void textview_show_part(TextView *textview, MimeInfo *mimeinfo, FILE *fp)
 258 {
 259         GtkText *text;
 260         gchar buf[BUFFSIZE];
 261         const gchar *boundary = NULL;
 262         gint boundary_len = 0;
 263         const gchar *charset = NULL;
 264         FILE *tmpfp;
 265         GPtrArray *headers = NULL;
 266         CodeConverter *conv;
 267
 268         g_return_if_fail(mimeinfo != NULL);
 269         g_return_if_fail(fp != NULL);
 270
 271         if (mimeinfo->mime_type == MIME_MULTIPART) {
 272                 if (mimeinfo->sub) {
 273                         mimeinfo = mimeinfo->sub;
 274                         if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0) {
 275                                 perror("fseek");
 276                                 return;
 277                         }
 278                 } else
 279                         return;
 280         }
 281         if (mimeinfo->parent && mimeinfo->parent->boundary) {
 282                 boundary = mimeinfo->parent->boundary;
 283                 boundary_len = strlen(boundary);
 284         }
 285
 286         if (!boundary && mimeinfo->mime_type == MIME_TEXT) {
 287                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 288                         perror("fseek");
 289                 headers = textview_scan_header(textview, fp);
 290         } else {
 291                 if (mimeinfo->mime_type == MIME_TEXT && mimeinfo->parent) {
 292                         glong fpos;
 293
 294                         if ((fpos = ftell(fp)) < 0)
 295                                 perror("ftell");
 296                         else if (fseek(fp, mimeinfo->parent->fpos, SEEK_SET)
 297                                  < 0)
 298                                 perror("fseek");
 299                         else {
 300                                 headers = textview_scan_header(textview, fp);
 301                                 if (fseek(fp, fpos, SEEK_SET) < 0)
 302                                         perror("fseek");
 303                         }
 304                 }
 305                 while (fgets(buf, sizeof(buf), fp) != NULL)
 306                         if (buf[0] == '\r' || buf[0] == '\n') break;
 307         }
 308
 309         /* display attached RFC822 single text message */
 310         if (mimeinfo->parent && mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
 311                 if (!mimeinfo->sub || mimeinfo->sub->children) return;
 312                 headers = textview_scan_header(textview, fp);
 313                 mimeinfo = mimeinfo->sub;
 314         } else if (!mimeinfo->parent &&
 315                    mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
 316                 if (!mimeinfo->sub) return;
 317                 headers = textview_scan_header(textview, fp);
 318                 mimeinfo = mimeinfo->sub;
 319         }
 320
 321         if (prefs_common.force_charset)
 322                 charset = prefs_common.force_charset;
 323         else if (mimeinfo->charset)
 324                 charset = mimeinfo->charset;
 325         textview_set_font(textview, charset);
 326
 327         conv = conv_code_converter_new(charset);
 328
 329         textview_clear(textview);
 330         text = GTK_TEXT(textview->text);
 331         gtk_text_freeze(text);
 332
 333         if (headers) {
 334                 gint i;
 335
 336                 textview_show_header(textview, headers);
 337                 for (i = 0; i < headers->len; i++) {
 338                         Header *header = g_ptr_array_index(headers, i);
 339                         g_free(header->body);
 340                         g_free(header->name);
 341                         g_free(header);
 342                 }
 343                 g_ptr_array_free(headers, TRUE);
 344         }
 345
 346         tmpfp = procmime_decode_content(NULL, fp, mimeinfo);
 347         if (tmpfp) {
 348                 if (mimeinfo->mime_type == MIME_TEXT_HTML)
 349                         textview_show_html(textview, tmpfp, conv);
 350                 else
 351                         while (fgets(buf, sizeof(buf), tmpfp) != NULL)
 352                                 textview_write_line(textview, buf, conv);
 353                 fclose(tmpfp);
 354         }
 355
 356         conv_code_converter_destroy(conv);
 357
 358         gtk_text_thaw(text);
 359 }
 360
 361 void textview_show_mime_part(TextView *textview, MimeInfo *partinfo)
 362 {
 363         GtkText *text;
 364
 365         if (!partinfo) return;
 366
 367         textview_set_font(textview, NULL);
 368         text = GTK_TEXT(textview->text);
 369         textview_clear(textview);
 370
 371         gtk_text_freeze(text);
 372
 373         gtk_text_insert
 374                 (text, textview->msgfont, NULL, NULL,
 375                  _("To save this part, pop up the context menu with\n"), -1);
 376         gtk_text_insert
 377                 (text, textview->msgfont, NULL, NULL,
 378                  _("right click and select `Save as...', or press `y' key.\n\n"), -1);
 379
 380         gtk_text_insert
 381                 (text, textview->msgfont, NULL, NULL,
 382                  _("To display this part as a text message, select\n"), -1);
 383         gtk_text_insert
 384                 (text, textview->msgfont, NULL, NULL,
 385                  _("`Display as text', or press `t' key.\n\n"), -1);
 386
 387         gtk_text_insert
 388                 (text, textview->msgfont, NULL, NULL,
 389                  _("To open this part with external program, select `Open',\n"), -1);
 390         gtk_text_insert
 391                 (text, textview->msgfont, NULL, NULL,
 392                  _("or double-click, or click the center button, or press `l' key."), -1);
 393
 394         gtk_text_thaw(text);
 395 }
 396
 397 #if USE_GPGME
 398 void textview_show_signature_part(TextView *textview, MimeInfo *partinfo)
 399 {
 400         GtkText *text;
 401
 402         if (!partinfo) return;
 403
 404         textview_set_font(textview, NULL);
 405         text = GTK_TEXT(textview->text);
 406         textview_clear(textview);
 407
 408         gtk_text_freeze(text);
 409
 410         if (partinfo->sigstatus_full == NULL) {
 411                 gtk_text_insert
 412                         (text, textview->msgfont, NULL, NULL,
 413                          _("This signature has not been checked yet.\n"), -1);
 414                 gtk_text_insert
 415                         (text, textview->msgfont, NULL, NULL,
 416                          _("To check it, pop up the context menu with\n"), -1);
 417                 gtk_text_insert
 418                         (text, textview->msgfont, NULL, NULL,
 419                          _("right click and select `Check signature'.\n"), -1);
 420         } else {
 421                 gtk_text_insert(text, textview->msgfont, NULL, NULL,
 422                                 partinfo->sigstatus_full, -1);
 423         }
 424
 425         gtk_text_thaw(text);
 426 }
 427 #endif /* USE_GPGME */
 428
 429 static void textview_show_html(TextView *textview, FILE *fp,
 430                                CodeConverter *conv)
 431 {
 432         HTMLParser *parser;
 433         gchar *str;
 434
 435         parser = html_parser_new(fp, conv);
 436         g_return_if_fail(parser != NULL);
 437
 438         while ((str = html_parse(parser)) != NULL) {
 439                 textview_write_line(textview, str, NULL);
 440         }
 441         html_parser_destroy(parser);
 442 }
 443
 444 /* get_uri_part() - retrieves a URI starting from scanpos.
 445                     Returns TRUE if succesful */
 446 static gboolean get_uri_part(const gchar *start, const gchar *scanpos,
 447                              const gchar **bp, const gchar **ep)
 448 {
 449         const gchar *ep_;
 450
 451         g_return_val_if_fail(start != NULL, FALSE);
 452         g_return_val_if_fail(scanpos != NULL, FALSE);
 453         g_return_val_if_fail(bp != NULL, FALSE);
 454         g_return_val_if_fail(ep != NULL, FALSE);
 455
 456         *bp = scanpos;
 457
 458         /* find end point of URI */
 459         for (ep_ = scanpos; *ep_ != '\0'; ep_++) {
 460                 if (!isgraph(*ep_) || !isascii(*ep_) || strchr("()<>\"", *ep_))
 461                         break;
 462         }
 463
 464         /* no punctuation at end of string */
 465
 466         /* FIXME: this stripping of trailing punctuations may bite with other URIs.
 467          * should pass some URI type to this function and decide on that whether
 468          * to perform punctuation stripping */
 469
 470 #define IS_REAL_PUNCT(ch) \
 471         (ispunct(ch) && ((ch) != '/'))
 472
 473         for (; ep_ - 1 > scanpos + 1 && IS_REAL_PUNCT(*(ep_ - 1)); ep_--)
 474                 ;
 475
 476 #undef IS_REAL_PUNCT
 477
 478         *ep = ep_;
 479
 480         return TRUE;
 481 }
 482
 483 static gchar *make_uri_string(const gchar *bp, const gchar *ep)
 484 {
 485         return g_strndup(bp, ep - bp);
 486 }
 487
 488 /* valid mail address characters */
 489 #define IS_RFC822_CHAR(ch) \
 490         (isascii(ch) && \
 491          (ch) > 32   && \
 492          (ch) != 127 && \
 493          !isspace(ch) && \
 494          !strchr("()<>\"", (ch)))
 495
 496 /* get_email_part() - retrieves an email address. Returns TRUE if succesful */
 497 static gboolean get_email_part(const gchar *start, const gchar *scanpos,
 498                                const gchar **bp, const gchar **ep)
 499 {
 500         /* more complex than the uri part because we need to scan back and forward starting from
 501          * the scan position. */
 502         gboolean result = FALSE;
 503         const gchar *bp_;
 504         const gchar *ep_;
 505
 506         g_return_val_if_fail(start != NULL, FALSE);
 507         g_return_val_if_fail(scanpos != NULL, FALSE);
 508         g_return_val_if_fail(bp != NULL, FALSE);
 509         g_return_val_if_fail(ep != NULL, FALSE);
 510
 511         /* scan start of address */
 512         for (bp_ = scanpos - 1; bp_ >= start && IS_RFC822_CHAR(*bp_); bp_--)
 513                 ;
 514
 515         /* TODO: should start with an alnum? */
 516         bp_++;
 517         for (; bp_ < scanpos && !isalnum(*bp_); bp_++)
 518                 ;
 519
 520         if (bp_ != scanpos) {
 521                 /* scan end of address */
 522                 for (ep_ = scanpos + 1; *ep_ && IS_RFC822_CHAR(*ep_); ep_++)
 523                         ;
 524
 525                 /* TODO: really should terminate with an alnum? */
 526                 for (; ep_ > scanpos  && !isalnum(*ep_); --ep_)
 527                         ;
 528                 ep_++;
 529
 530                 if (ep_ > scanpos + 1) {
 531                         *ep = ep_;
 532                         *bp = bp_;
 533                         result = TRUE;
 534                 }
 535         }
 536
 537         /* we now have at least the address. now see if this is <bracketed>; in this
 538          * case we also scan for the informative part. we could make this a useful
 539          * function because it tries to parse out an email address backwards. :) */
 540         if (result) {
 541                 if ( ((bp_ - 1 > start) && *(bp_ - 1) == '<') &&  (*ep_ == '>')) {
 542
 543                         /* the informative part of the email address (describing the name
 544                          * of the email address owner) may contain quoted parts. the
 545                          * closure stack stores the last encountered quotes. */
 546                         char    closure_stack[128];
 547                         char   *ptr = closure_stack;
 548 #define FULL_STACK()    ((ptr - closure_stack) >= sizeof closure_stack)
 549 #define IN_STACK()              (ptr > closure_stack)
 550 /* has underrun check */
 551 #define POP_STACK()             if(IN_STACK()) --ptr
 552 /* has overrun check */
 553 #define PUSH_STACK(c)   if(!FULL_STACK()) *ptr++ = (c); else return TRUE
 554 /* has underrun check */
 555 #define PEEK_STACK()    (IN_STACK() ? *(ptr - 1) : 0)
 556
 557                         ep_++;
 558
 559                         /* scan for the informative part. */
 560
 561                         for (bp_ -= 2; bp_ >= start; bp_--) {
 562                                 /* if closure on the stack keep scanning */
 563                                 if (PEEK_STACK() == *bp_) {
 564                                         POP_STACK();
 565                                 }
 566                                 else {
 567                                         if (*bp_ == '\'' || *bp_ == '"')  {
 568                                                 PUSH_STACK(*bp_);
 569                                         }
 570                                         else {
 571                                                 /* if nothing in the closure stack, do the special conditions
 572                                                  * the following if..else expression simply checks whether
 573                                                  * a token is acceptable. if not acceptable, the clause
 574                                                  * should terminate the loop with a 'break' */
 575                                                 if (!PEEK_STACK()) {
 576                                                         if ( *bp_ == '-'
 577                                                         &&   (((bp_ - 1) >= start) && isalnum(*(bp_ - 1)))
 578                                                         &&   (((bp_ + 1) < ep_)    && isalnum(*(bp_ + 1))) ) {
 579                                                                 /* hyphens are allowed, but only in between alnums */
 580                                                         }
 581                                                         else if ( !ispunct(*bp_) ) {
 582                                                                 /* but anything not being a punctiation is ok */
 583                                                         }
 584                                                         else {
 585                                                                 break; /* anything else is rejected */
 586                                                         }
 587                                                 }
 588                                         }
 589                                 }
 590                         }
 591
 592                         bp_++;
 593
 594 #undef PEEK_STACK
 595 #undef PUSH_STACK
 596 #undef POP_STACK
 597 #undef IN_STACK
 598 #undef FULL_STACK
 599
 600                         /* scan forward (should start with an alnum) */
 601                         for (; *bp_ != '<' && isspace(*bp_) && *bp_ != '"'; bp_++)
 602                                 ;
 603
 604                         *ep = ep_;
 605                         *bp = bp_;
 606                 }
 607         }
 608         return result;
 609 }
 610
 611 #undef IS_RFC822_CHAR
 612
 613 static gchar *make_email_string(const gchar *bp, const gchar *ep)
 614 {
 615         /* returns a mailto: URI; mailto: is also used to detect the
 616          * uri type later on in the button_pressed signal handler */
 617         gchar *tmp;
 618         gchar *result;
 619
 620         tmp = g_strndup(bp, ep - bp);
 621         result = g_strconcat("mailto:", tmp, NULL);
 622         g_free(tmp);
 623
 624         return result;
 625 }
 626
 627 #define ADD_TXT_POS(bp_, ep_, pti_) \
 628         if ((last->next = alloca(sizeof(struct txtpos))) != NULL) { \
 629                 last = last->next; \
 630                 last->bp = (bp_); last->ep = (ep_); last->pti = (pti_); \
 631                 last->next = NULL; \
 632         } else { \
 633                 g_warning("alloc error scanning URIs\n"); \
 634                 gtk_text_insert(text, textview->msgfont, fg_color, NULL, \
 635                                 linebuf, -1); \
 636                 return; \
 637         }
 638
 639 /* textview_make_clickable_parts() - colorizes clickable parts */
 640 static void textview_make_clickable_parts(TextView *textview, GtkText *text,
 641                                           GdkFont  *textfont,
 642                                           GdkColor *fg_color,
 643                                           GdkColor *uri_color,
 644                                           const gchar *linebuf)
 645 {
 646         /* parse table - in order of priority */
 647         struct table {
 648                 const gchar *needle; /* token */
 649
 650                 /* token search function */
 651                 gchar    *(*search)     (const gchar *haystack,
 652                                          const gchar *needle);
 653                 /* part parsing function */
 654                 gboolean  (*parse)      (const gchar *start,
 655                                          const gchar *scanpos,
 656                                          const gchar **bp_,
 657                                          const gchar **ep_);
 658                 /* part to URI function */
 659                 gchar    *(*build_uri)  (const gchar *bp,
 660                                          const gchar *ep);
 661         };
 662
 663         static struct table parser[] = {
 664                 {"http://",  strcasestr, get_uri_part,   make_uri_string},
 665                 {"https://", strcasestr, get_uri_part,   make_uri_string},
 666                 {"ftp://",   strcasestr, get_uri_part,   make_uri_string},
 667                 {"mailto:",  strcasestr, get_uri_part,   make_uri_string},
 668                 {"@",        strcasestr, get_email_part, make_email_string}
 669         };
 670         const gint PARSE_ELEMS = sizeof parser / sizeof parser[0];
 671
 672         gint  n;
 673         const gchar *walk, *bp, *ep;
 674
 675         struct txtpos {
 676                 const gchar     *bp, *ep;       /* text position */
 677                 gint             pti;           /* index in parse table */
 678                 struct txtpos   *next;          /* next */
 679         } head = {NULL, NULL, 0,  NULL}, *last = &head;
 680
 681         /* parse for clickable parts, and build a list of begin and end positions  */
 682         for (walk = linebuf, n = 0;;) {
 683                 gint last_index = PARSE_ELEMS;
 684                 gchar *scanpos = NULL;
 685
 686                 /* FIXME: this looks phony. scanning for anything in the parse table */
 687                 for (n = 0; n < PARSE_ELEMS; n++) {
 688                         gchar *tmp;
 689
 690                         tmp = parser[n].search(walk, parser[n].needle);
 691                         if (tmp) {
 692                                 if (scanpos == NULL || tmp < scanpos) {
 693                                         scanpos = tmp;
 694                                         last_index = n;
 695                                 }
 696                         }
 697                 }
 698
 699                 if (scanpos) {
 700                         /* check if URI can be parsed */
 701                         if (parser[last_index].parse(linebuf, scanpos, &bp, &ep)
 702                             && (ep - bp - 1) > strlen(parser[last_index].needle)) {
 703                                         ADD_TXT_POS(bp, ep, last_index);
 704                                         walk = ep;
 705                         } else
 706                                 walk = scanpos +
 707                                         strlen(parser[last_index].needle);
 708                 } else
 709                         break;
 710         }
 711
 712         /* colorize this line */
 713         if (head.next) {
 714                 const gchar *normal_text = linebuf;
 715
 716                 /* insert URIs */
 717                 for (last = head.next; last != NULL;
 718                      normal_text = last->ep, last = last->next) {
 719                         RemoteURI *uri;
 720
 721                         uri = g_new(RemoteURI, 1);
 722                         if (last->bp - normal_text > 0)
 723                                 gtk_text_insert(text, textfont,
 724                                                 fg_color, NULL,
 725                                                 normal_text,
 726                                                 last->bp - normal_text);
 727                         uri->uri = parser[last->pti].build_uri(last->bp, last->ep);
 728                         uri->start = gtk_text_get_point(text);
 729                         gtk_text_insert(text, textfont, uri_color,
 730                                         NULL, last->bp, last->ep - last->bp);
 731                         uri->end = gtk_text_get_point(text);
 732                         textview->uri_list =
 733                                 g_slist_append(textview->uri_list, uri);
 734                 }
 735
 736                 if (*normal_text)
 737                         gtk_text_insert(text, textfont, fg_color,
 738                                         NULL, normal_text, -1);
 739         } else
 740                 gtk_text_insert(text, textfont, fg_color, NULL,
 741                                 linebuf, -1);
 742 }
 743
 744 #undef ADD_TXT_POS
 745
 746 static void textview_write_line(TextView *textview, const gchar *str,
 747                                 CodeConverter *conv)
 748 {
 749         GtkText *text = GTK_TEXT(textview->text);
 750         gchar buf[BUFFSIZE];
 751         size_t len;
 752         GdkColor *fg_color;
 753         gint quotelevel = -1;
 754
 755         if (!conv)
 756                 strncpy2(buf, str, sizeof(buf));
 757         else if (conv_convert(conv, buf, sizeof(buf), str) < 0) {
 758                 gtk_text_insert(text, textview->msgfont,
 759                                 prefs_common.enable_color
 760                                 ? &error_color : NULL, NULL,
 761                                 "*** Warning: code conversion failed ***\n",
 762                                 -1);
 763                 return;
 764         }
 765
 766         len = strlen(buf);
 767         if (len > 1 && buf[len - 1] == '\n' && buf[len - 2] == '\r') {
 768                 buf[len - 2] = '\n';
 769                 buf[len - 1] = '\0';
 770         }
 771         if (prefs_common.conv_mb_alnum) conv_mb_alnum(buf);
 772         fg_color = NULL;
 773
 774         /* change color of quotation
 775            >, foo>, _> ... ok, <foo>, foo bar>, foo-> ... ng
 776            Up to 3 levels of quotations are detected, and each
 777            level is colored using a different color. */
 778         if (prefs_common.enable_color && strchr(buf, '>')) {
 779                 quotelevel = get_quote_level(buf);
 780
 781                 /* set up the correct foreground color */
 782                 if (quotelevel > 2) {
 783                         /* recycle colors */
 784                         if (prefs_common.recycle_quote_colors)
 785                                 quotelevel %= 3;
 786                         else
 787                                 quotelevel = 2;
 788                 }
 789         }
 790
 791         if (quotelevel == -1)
 792                 fg_color = NULL;
 793         else
 794                 fg_color = &quote_colors[quotelevel];
 795
 796         if (prefs_common.head_space && spacingfont && buf[0] != '\n')
 797                 gtk_text_insert(text, spacingfont, NULL, NULL, " ", 1);
 798
 799         if (prefs_common.enable_color)
 800                 textview_make_clickable_parts(textview, text,
 801                                                   textview->msgfont,
 802                                               fg_color, &uri_color, buf);
 803         else
 804                 gtk_text_insert(text, textview->msgfont, fg_color, NULL,
 805                                 buf, -1);
 806 }
 807
 808 void textview_clear(TextView *textview)
 809 {
 810         GtkText *text = GTK_TEXT(textview->text);
 811
 812         gtk_text_freeze(text);
 813         gtk_text_backward_delete(text, gtk_text_get_length(text));
 814         gtk_text_thaw(text);
 815
 816         textview_uri_list_remove_all(textview->uri_list);
 817         textview->uri_list = NULL;
 818 }
 819
 820 void textview_destroy(TextView *textview)
 821 {
 822         textview_uri_list_remove_all(textview->uri_list);
 823         textview->uri_list = NULL;
 824
 825         if (!textview->scrolledwin_sb->parent)
 826                 gtk_widget_destroy(textview->scrolledwin_sb);
 827         if (!textview->scrolledwin_mb->parent)
 828                 gtk_widget_destroy(textview->scrolledwin_mb);
 829
 830         if (textview->msgfont) {
 831                 textview->msgfont->ascent = textview->prev_ascent;
 832                 textview->msgfont->descent = textview->prev_descent;
 833                 gdk_font_unref(textview->msgfont);
 834         }
 835         if (textview->boldfont)
 836                 gdk_font_unref(textview->boldfont);
 837
 838         g_free(textview);
 839 }
 840
 841 void textview_set_font(TextView *textview, const gchar *codeset)
 842 {
 843         gboolean use_fontset = TRUE;
 844
 845         /* In multi-byte mode, GtkText can't display 8bit characters
 846            correctly, so it must be single-byte mode. */
 847         if (MB_CUR_MAX > 1) {
 848                 if (codeset) {
 849                         if (!strncasecmp(codeset, "ISO-8859-", 9) ||
 850                             !strncasecmp(codeset, "KOI8-", 5)     ||
 851                             !strncasecmp(codeset, "CP", 2)        ||
 852                             !strncasecmp(codeset, "WINDOWS-", 8)  ||
 853                             !strcasecmp(codeset, "BALTIC"))
 854                                 use_fontset = FALSE;
 855                 }
 856         } else
 857                 use_fontset = FALSE;
 858
 859         if (textview->text_is_mb && !use_fontset) {
 860                 GtkWidget *parent;
 861
 862                 parent = textview->scrolledwin_mb->parent;
 863                 gtk_editable_select_region
 864                         (GTK_EDITABLE(textview->text_mb), 0, 0);
 865                 gtk_container_remove(GTK_CONTAINER(parent),
 866                                      textview->scrolledwin_mb);
 867                 gtk_container_add(GTK_CONTAINER(parent),
 868                                   textview->scrolledwin_sb);
 869
 870                 textview->text = textview->text_sb;
 871                 textview->text_is_mb = FALSE;
 872         } else if (!textview->text_is_mb && use_fontset) {
 873                 GtkWidget *parent;
 874
 875                 parent = textview->scrolledwin_sb->parent;
 876                 gtk_editable_select_region
 877                         (GTK_EDITABLE(textview->text_sb), 0, 0);
 878                 gtk_container_remove(GTK_CONTAINER(parent),
 879                                      textview->scrolledwin_sb);
 880                 gtk_container_add(GTK_CONTAINER(parent),
 881                                   textview->scrolledwin_mb);
 882
 883                 textview->text = textview->text_mb;
 884                 textview->text_is_mb = TRUE;
 885         }
 886
 887         if (prefs_common.textfont) {
 888                 if (textview->msgfont) {
 889                         textview->msgfont->ascent = textview->prev_ascent;
 890                         textview->msgfont->descent = textview->prev_descent;
 891                         gdk_font_unref(textview->msgfont);
 892                         textview->msgfont = NULL;
 893                 }
 894                 if (use_fontset)
 895                         textview->msgfont =
 896                                 gdk_fontset_load(prefs_common.textfont);
 897                 else {
 898                         if (MB_CUR_MAX > 1) {
 899                                 FONT_LOAD(textview->msgfont,
 900                                           "-*-courier-medium-r-normal--14-*-*-*-*-*-iso8859-1");
 901                         } else {
 902                                 FONT_LOAD(textview->msgfont,
 903                                           prefs_common.textfont);
 904                         }
 905                 }
 906
 907                 if (textview->msgfont) {
 908                         gint ascent, descent;
 909
 910                         textview->prev_ascent = textview->msgfont->ascent;
 911                         textview->prev_descent = textview->msgfont->descent;
 912                         descent = prefs_common.line_space / 2;
 913                         ascent  = prefs_common.line_space - descent;
 914                         textview->msgfont->ascent  += ascent;
 915                         textview->msgfont->descent += descent;
 916                 }
 917         }
 918
 919         if (!textview->boldfont)
 920                 FONT_LOAD(textview->boldfont, BOLD_FONT);
 921         if (!spacingfont)
 922                 spacingfont = gdk_font_load("-*-*-medium-r-normal--6-*");
 923 }
 924
 925 enum
 926 {
 927         H_DATE          = 0,
 928         H_FROM          = 1,
 929         H_TO            = 2,
 930         H_NEWSGROUPS    = 3,
 931         H_SUBJECT       = 4,
 932         H_CC            = 5,
 933         H_REPLY_TO      = 6,
 934         H_FOLLOWUP_TO   = 7,
 935         H_X_MAILER      = 8,
 936         H_X_NEWSREADER  = 9,
 937         H_USER_AGENT    = 10,
 938         H_ORGANIZATION  = 11,
 939 };
 940
 941 static gboolean hdrequal(char * hdr1, char * hdr2)
 942 {
 943         int len1;
 944         int len2;
 945
 946         len1 = strlen(hdr1);
 947         len2 = strlen(hdr2);
 948         if (hdr1[len1 - 1] == ':')
 949                 len1--;
 950         if (hdr2[len2 - 1] == ':')
 951                 len2--;
 952         if (len1 != len2)
 953                 return 0;
 954         return (strncasecmp(hdr1, hdr2, len1) == 0);
 955 }
 956
 957 static GPtrArray *textview_scan_header(TextView *textview, FILE *fp)
 958 {
 959         /*
 960         static HeaderEntry hentry[] = {{"Date:",         NULL, FALSE},
 961                                        {"From:",         NULL, TRUE},
 962                                        {"To:",           NULL, FALSE},
 963                                        {"Newsgroups:",   NULL, FALSE},
 964                                        {"Subject:",      NULL, TRUE},
 965                                        {"Cc:",           NULL, FALSE},
 966                                        {"Reply-To:",     NULL, FALSE},
 967                                        {"Followup-To:",  NULL, FALSE},
 968                                        {"X-Mailer:",     NULL, TRUE},
 969                                        {"X-Newsreader:", NULL, TRUE},
 970                                        {"User-Agent:",   NULL, TRUE},
 971                                        {"Organization:", NULL, TRUE},
 972                                        {NULL,            NULL, FALSE}};
 973         */
 974         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 975         gint hnum;
 976         HeaderEntry *hp;
 977         GPtrArray *headers;
 978         GSList * l;
 979
 980         int i;
 981         GPtrArray *sorted_headers;
 982
 983         g_return_val_if_fail(fp != NULL, NULL);
 984
 985         if (!prefs_common.display_header) {
 986                 while (fgets(buf, sizeof(buf), fp) != NULL)
 987                         if (buf[0] == '\r' || buf[0] == '\n') break;
 988                 return NULL;
 989         }
 990
 991         headers = g_ptr_array_new();
 992
 993         /*
 994         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 995                != -1) {
 996                 Header *header;
 997
 998                 hp = hentry + hnum;
 999
1000                 header = g_new(Header, 1);
1001                 header->name = g_strndup(buf, strlen(hp->name));
1002                 conv_unmime_header(tmp, sizeof(tmp), buf + strlen(hp->name),
1003                                    NULL);
1004                 header->body = g_strdup(tmp);
1005
1006                 g_ptr_array_add(headers, header);
1007         }
1008         */
1009         //      while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
1010         while (procheader_get_one_field(buf, sizeof(buf), fp, NULL) != -1) {
1011                 gchar * p;
1012                 Header *header;
1013
1014                 if (*buf == ':') continue;
1015                 for (p = buf; *p && *p != ' '; p++) {
1016                         if (*p == ':') {
1017                                 header = g_new(Header, 1);
1018                                 header->name = g_strndup(buf, p - buf + 1);
1019                                 p++;
1020                                 /* while (*p == ' ' || *p == '\t') p++; */
1021                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
1022                                 header->body = g_strdup(tmp);
1023
1024                                 g_ptr_array_add(headers, header);
1025                                 break;
1026                         }
1027                 }
1028         }
1029
1030         sorted_headers = g_ptr_array_new();
1031         for(l = prefs_display_headers.headers_list ; l != NULL ;
1032             l = g_slist_next(l)) {
1033                 HeaderDisplayProp * dp = (HeaderDisplayProp *) l->data;
1034                 for(i = 0 ; i < headers->len ; i++) {
1035                         Header * header = g_ptr_array_index(headers, i);
1036                         if (hdrequal(header->name, dp->name)) {
1037                                 if (dp->hidden) {
1038                                         g_ptr_array_remove_index(headers, i);
1039                                         g_free(header->body);
1040                                         g_free(header->name);
1041                                         g_free(header);
1042                                         i--;
1043                                 }
1044                                 else {
1045                                         g_ptr_array_add(sorted_headers,
1046                                                         header);
1047                                         g_ptr_array_remove_index(headers, i);
1048                                         i--;
1049                                 }
1050                         }
1051                 }
1052         }
1053
1054         if (prefs_display_headers.show_other_headers) {
1055                 for(i = 0 ; i < headers->len ; i++) {
1056                         Header * header = g_ptr_array_index(headers, i);
1057                         g_ptr_array_add(sorted_headers, header);
1058                 }
1059         }
1060
1061         g_ptr_array_free(headers, TRUE);
1062
1063         return sorted_headers;
1064 }
1065
1066 static void textview_show_header(TextView *textview, GPtrArray *headers)
1067 {
1068         GtkText *text = GTK_TEXT(textview->text);
1069         Header *header;
1070         gint i;
1071
1072         g_return_if_fail(headers != NULL);
1073
1074         gtk_text_freeze(text);
1075
1076         for (i = 0; i < headers->len; i++) {
1077                 header = g_ptr_array_index(headers, i);
1078                 g_return_if_fail(header->name != NULL);
1079
1080                 gtk_text_insert(text, textview->boldfont, NULL, NULL,
1081                                 header->name, -1);
1082                 if (prefs_common.enable_color &&
1083                     (strncmp(header->name, "X-Mailer", 8) == 0 ||
1084                      strncmp(header->name, "X-Newsreader", 12) == 0) &&
1085                     strstr(header->body, "Sylpheed") != NULL)
1086                         gtk_text_insert(text, NULL, &emphasis_color, NULL,
1087                                         header->body, -1);
1088                 else {
1089                         if (prefs_common.enable_color) {
1090                                 textview_make_clickable_parts(textview, text,
1091                                                                                           NULL,
1092                                                                                           NULL,
1093                                                                                           &uri_color,
1094                                                                                           header->body);
1095                         }
1096                         else {
1097                                 gtk_text_insert(text, NULL, NULL, NULL,
1098                                                 header->body, -1);
1099                         }
1100                 }
1101                 gtk_text_insert(text, textview->msgfont, NULL, NULL, "\n", 1);
1102         }
1103
1104         gtk_text_insert(text, textview->msgfont, NULL, NULL, "\n", 1);
1105         gtk_text_thaw(text);
1106 }
1107
1108 void textview_scroll_one_line(TextView *textview, gboolean up)
1109 {
1110         GtkText *text = GTK_TEXT(textview->text);
1111         gfloat upper;
1112
1113         if (prefs_common.enable_smooth_scroll) {
1114                 textview_smooth_scroll_one_line(textview, up);
1115                 return;
1116         }
1117
1118         if (!up) {
1119                 upper = text->vadj->upper - text->vadj->page_size;
1120                 if (text->vadj->value < upper) {
1121                         text->vadj->value +=
1122                                 text->vadj->step_increment * 4;
1123                         text->vadj->value =
1124                                 MIN(text->vadj->value, upper);
1125                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1126                                                 "value_changed");
1127                 }
1128         } else {
1129                 if (text->vadj->value > 0.0) {
1130                         text->vadj->value -=
1131                                 text->vadj->step_increment * 4;
1132                         text->vadj->value =
1133                                 MAX(text->vadj->value, 0.0);
1134                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1135                                                 "value_changed");
1136                 }
1137         }
1138 }
1139
1140 gboolean textview_scroll_page(TextView *textview, gboolean up)
1141 {
1142         GtkText *text = GTK_TEXT(textview->text);
1143         gfloat upper;
1144         gfloat page_incr;
1145
1146         if (prefs_common.enable_smooth_scroll)
1147                 return textview_smooth_scroll_page(textview, up);
1148
1149         if (prefs_common.scroll_halfpage)
1150                 page_incr = text->vadj->page_increment / 2;
1151         else
1152                 page_incr = text->vadj->page_increment;
1153
1154         if (!up) {
1155                 upper = text->vadj->upper - text->vadj->page_size;
1156                 if (text->vadj->value < upper) {
1157                         text->vadj->value += page_incr;
1158                         text->vadj->value = MIN(text->vadj->value, upper);
1159                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1160                                                 "value_changed");
1161                 } else
1162                         return FALSE;
1163         } else {
1164                 if (text->vadj->value > 0.0) {
1165                         text->vadj->value -= page_incr;
1166                         text->vadj->value = MAX(text->vadj->value, 0.0);
1167                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1168                                                 "value_changed");
1169                 } else
1170                         return FALSE;
1171         }
1172
1173         return TRUE;
1174 }
1175
1176 static void textview_smooth_scroll_do(TextView *textview,
1177                                       gfloat old_value, gfloat last_value,
1178                                       gint step)
1179 {
1180         GtkText *text = GTK_TEXT(textview->text);
1181         gint change_value;
1182         gboolean up;
1183         gint i;
1184
1185         if (old_value < last_value) {
1186                 change_value = last_value - old_value;
1187                 up = FALSE;
1188         } else {
1189                 change_value = old_value - last_value;
1190                 up = TRUE;
1191         }
1192
1193         gdk_key_repeat_disable();
1194
1195         for (i = step; i <= change_value; i += step) {
1196                 text->vadj->value = old_value + (up ? -i : i);
1197                 gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1198                                         "value_changed");
1199         }
1200
1201         text->vadj->value = last_value;
1202         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj), "value_changed");
1203
1204         gdk_key_repeat_restore();
1205 }
1206
1207 static void textview_smooth_scroll_one_line(TextView *textview, gboolean up)
1208 {
1209         GtkText *text = GTK_TEXT(textview->text);
1210         gfloat upper;
1211         gfloat old_value;
1212         gfloat last_value;
1213
1214         if (!up) {
1215                 upper = text->vadj->upper - text->vadj->page_size;
1216                 if (text->vadj->value < upper) {
1217                         old_value = text->vadj->value;
1218                         last_value = text->vadj->value +
1219                                 text->vadj->step_increment * 4;
1220                         last_value = MIN(last_value, upper);
1221
1222                         textview_smooth_scroll_do(textview, old_value,
1223                                                   last_value,
1224                                                   prefs_common.scroll_step);
1225                 }
1226         } else {
1227                 if (text->vadj->value > 0.0) {
1228                         old_value = text->vadj->value;
1229                         last_value = text->vadj->value -
1230                                 text->vadj->step_increment * 4;
1231                         last_value = MAX(last_value, 0.0);
1232
1233                         textview_smooth_scroll_do(textview, old_value,
1234                                                   last_value,
1235                                                   prefs_common.scroll_step);
1236                 }
1237         }
1238 }
1239
1240 static gboolean textview_smooth_scroll_page(TextView *textview, gboolean up)
1241 {
1242         GtkText *text = GTK_TEXT(textview->text);
1243         gfloat upper;
1244         gfloat page_incr;
1245         gfloat old_value;
1246         gfloat last_value;
1247
1248         if (prefs_common.scroll_halfpage)
1249                 page_incr = text->vadj->page_increment / 2;
1250         else
1251                 page_incr = text->vadj->page_increment;
1252
1253         if (!up) {
1254                 upper = text->vadj->upper - text->vadj->page_size;
1255                 if (text->vadj->value < upper) {
1256                         old_value = text->vadj->value;
1257                         last_value = text->vadj->value + page_incr;
1258                         last_value = MIN(last_value, upper);
1259
1260                         textview_smooth_scroll_do(textview, old_value,
1261                                                   last_value,
1262                                                   prefs_common.scroll_step);
1263                 } else
1264                         return FALSE;
1265         } else {
1266                 if (text->vadj->value > 0.0) {
1267                         old_value = text->vadj->value;
1268                         last_value = text->vadj->value - page_incr;
1269                         last_value = MAX(last_value, 0.0);
1270
1271                         textview_smooth_scroll_do(textview, old_value,
1272                                                   last_value,
1273                                                   prefs_common.scroll_step);
1274                 } else
1275                         return FALSE;
1276         }
1277
1278         return TRUE;
1279 }
1280
1281 static void textview_key_pressed(GtkWidget *widget, GdkEventKey *event,
1282                                  TextView *textview)
1283 {
1284         SummaryView *summaryview = NULL;
1285
1286         if (!event) return;
1287         if (textview->messageview->mainwin)
1288                 summaryview = textview->messageview->mainwin->summaryview;
1289
1290         switch (event->keyval) {
1291         case GDK_Tab:
1292         case GDK_Home:
1293         case GDK_Left:
1294         case GDK_Up:
1295         case GDK_Right:
1296         case GDK_Down:
1297         case GDK_Page_Up:
1298         case GDK_Page_Down:
1299         case GDK_End:
1300         case GDK_Control_L:
1301         case GDK_Control_R:
1302                 break;
1303         case GDK_space:
1304                 if (summaryview)
1305                         summary_pass_key_press_event(summaryview, event);
1306                 else
1307                         textview_scroll_page(textview, FALSE);
1308                 break;
1309         case GDK_BackSpace:
1310         case GDK_Delete:
1311                 textview_scroll_page(textview, TRUE);
1312                 break;
1313         case GDK_Return:
1314                 textview_scroll_one_line(textview,
1315                                          (event->state & GDK_MOD1_MASK) != 0);
1316                 break;
1317         default:
1318                 if (summaryview)
1319                         summary_pass_key_press_event(summaryview, event);
1320                 break;
1321         }
1322 }
1323
1324 static void textview_button_pressed(GtkWidget *widget, GdkEventButton *event,
1325                                     TextView *textview)
1326 {
1327         if (event &&
1328             ((event->button == 1 && event->type == GDK_2BUTTON_PRESS)
1329                 || event->button == 2
1330                 || event->button == 3)) {
1331                 GSList *cur;
1332                 guint current_pos;
1333
1334                 current_pos = GTK_EDITABLE(textview->text)->current_pos;
1335
1336                 for (cur = textview->uri_list; cur != NULL; cur = cur->next) {
1337                         RemoteURI *uri = (RemoteURI *)cur->data;
1338
1339                         if (current_pos >= uri->start &&
1340                             current_pos <  uri->end) {
1341                                 if (!strncasecmp(uri->uri, "mailto:", 7)) {
1342                                         compose_new_with_recipient
1343                                                 (NULL, uri->uri + 7);
1344                                 }
1345                                 else
1346                                         open_uri(uri->uri,
1347                                                  prefs_common.uri_cmd);
1348                         }
1349                 }
1350         }
1351 }
1352
1353 static void textview_uri_list_remove_all(GSList *uri_list)
1354 {
1355         GSList *cur;
1356
1357         for (cur = uri_list; cur != NULL; cur = cur->next) {
1358                 if (cur->data) {
1359                         g_free(((RemoteURI *)cur->data)->uri);
1360                         g_free(cur->data);
1361                 }
1362         }
1363
1364         g_slist_free(uri_list);
1365 }