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         if (result) {
 538                 /* we now have at least the address. now see if this is <bracketed>; in this
 539                  * case we also scan for the informative part. we could make this a useful
 540                  * function because it tries to parse out an email address backwards. :) */
 541                 if ( ((bp_ - 1 > start) && *(bp_ - 1) == '<') &&  (*ep_ == '>')) {
 542                         char    closure_stack[128];
 543                         char   *ptr = closure_stack;
 544 #define FULL_STACK()    ((ptr - closure_stack) >= sizeof closure_stack)
 545 #define IN_STACK()              (ptr > closure_stack)
 546 /* has underrun check */
 547 #define POP_STACK()             if(IN_STACK()) --ptr
 548 /* has overrun check */
 549 #define PUSH_STACK(c)   if(!FULL_STACK()) *ptr++ = (c); else return TRUE
 550 /* has underrun check */
 551 #define PEEK_STACK()    (IN_STACK() ? *(ptr - 1) : 0)
 552
 553                         ep_++;
 554
 555                         /* scan for the informative part */
 556                         for (bp_ -= 2; bp_ >= start; bp_--) {
 557                                 /* if closure on the stack keep scanning */
 558                                 if (PEEK_STACK() == *bp_) {
 559                                         POP_STACK();
 560                                 }
 561                                 else {
 562                                         if (*bp_ == '\'' || *bp_ == '"')  {
 563                                                 PUSH_STACK(*bp_);
 564                                         }
 565                                         else {
 566                                                 if (!PEEK_STACK()) {
 567                                                         /* if nothing in the closure stack, do the special conditions
 568                                                          * the following if..else expression simply checks whether
 569                                                          * a token is acceptable. if not acceptable, the clause
 570                                                          * should terminate the loop with a 'break' */
 571                                                         if ( *bp_ == '-'
 572                                                         &&   (((bp_ - 1) >= start) && isalnum(*(bp_ - 1)))
 573                                                         &&   (((bp_ + 1) < ep_)    && isalnum(*(bp_ + 1))) ) {
 574                                                                 /* hyphens are allowed, but only in between alnums */
 575                                                         }
 576                                                         else if ( !ispunct(*bp_) ) {
 577                                                                 /* but anything not being a punctiation is ok */
 578                                                         }
 579                                                         else {
 580                                                                 break; /* anything else is rejected */
 581                                                         }
 582                                                 }
 583                                         }
 584                                 }
 585                         }
 586
 587                         bp_++;
 588
 589 #undef PEEK_STACK
 590 #undef PUSH_STACK
 591 #undef POP_STACK
 592 #undef IN_STACK
 593 #undef FULL_STACK
 594
 595                         /* scan forward (should start with an alnum) */
 596                         for (; *bp_ != '<' && isspace(*bp_) && *bp_ != '"'; bp_++)
 597                                 ;
 598
 599                         *ep = ep_;
 600                         *bp = bp_;
 601                 }
 602         }
 603         return result;
 604 }
 605
 606 #undef IS_RFC822_CHAR
 607
 608 static gchar *make_email_string(const gchar *bp, const gchar *ep)
 609 {
 610         /* returns a mailto: URI; mailto: is also used to detect the
 611          * uri type later on in the button_pressed signal handler */
 612         gchar *tmp;
 613         gchar *result;
 614
 615         tmp = g_strndup(bp, ep - bp);
 616         result = g_strconcat("mailto:", tmp, NULL);
 617         g_free(tmp);
 618
 619         return result;
 620 }
 621
 622 #define ADD_TXT_POS(bp_, ep_, pti_) \
 623         if ((last->next = alloca(sizeof(struct txtpos))) != NULL) { \
 624                 last = last->next; \
 625                 last->bp = (bp_); last->ep = (ep_); last->pti = (pti_); \
 626                 last->next = NULL; \
 627         } else { \
 628                 g_warning("alloc error scanning URIs\n"); \
 629                 gtk_text_insert(text, textview->msgfont, fg_color, NULL, \
 630                                 linebuf, -1); \
 631                 return; \
 632         }
 633
 634 /* textview_make_clickable_parts() - colorizes clickable parts */
 635 static void textview_make_clickable_parts(TextView *textview, GtkText *text,
 636                                           GdkFont  *textfont,
 637                                           GdkColor *fg_color,
 638                                           GdkColor *uri_color,
 639                                           const gchar *linebuf)
 640 {
 641         /* parse table - in order of priority */
 642         struct table {
 643                 const gchar *needle; /* token */
 644
 645                 /* token search function */
 646                 gchar    *(*search)     (const gchar *haystack,
 647                                          const gchar *needle);
 648                 /* part parsing function */
 649                 gboolean  (*parse)      (const gchar *start,
 650                                          const gchar *scanpos,
 651                                          const gchar **bp_,
 652                                          const gchar **ep_);
 653                 /* part to URI function */
 654                 gchar    *(*build_uri)  (const gchar *bp,
 655                                          const gchar *ep);
 656         };
 657
 658         static struct table parser[] = {
 659                 {"http://",  strcasestr, get_uri_part,   make_uri_string},
 660                 {"https://", strcasestr, get_uri_part,   make_uri_string},
 661                 {"ftp://",   strcasestr, get_uri_part,   make_uri_string},
 662                 {"mailto:",  strcasestr, get_uri_part,   make_uri_string},
 663                 {"@",        strcasestr, get_email_part, make_email_string}
 664         };
 665         const gint PARSE_ELEMS = sizeof parser / sizeof parser[0];
 666
 667         gint  n;
 668         const gchar *walk, *bp, *ep;
 669
 670         struct txtpos {
 671                 const gchar     *bp, *ep;       /* text position */
 672                 gint             pti;           /* index in parse table */
 673                 struct txtpos   *next;          /* next */
 674         } head = {NULL, NULL, 0,  NULL}, *last = &head;
 675
 676         /* parse for clickable parts, and build a list of begin and end positions  */
 677         for (walk = linebuf, n = 0;;) {
 678                 gint last_index = PARSE_ELEMS;
 679                 gchar *scanpos = NULL;
 680
 681                 /* FIXME: this looks phony. scanning for anything in the parse table */
 682                 for (n = 0; n < PARSE_ELEMS; n++) {
 683                         gchar *tmp;
 684
 685                         tmp = parser[n].search(walk, parser[n].needle);
 686                         if (tmp) {
 687                                 if (scanpos == NULL || tmp < scanpos) {
 688                                         scanpos = tmp;
 689                                         last_index = n;
 690                                 }
 691                         }
 692                 }
 693
 694                 if (scanpos) {
 695                         /* check if URI can be parsed */
 696                         if (parser[last_index].parse(linebuf, scanpos, &bp, &ep)
 697                             && (ep - bp - 1) > strlen(parser[last_index].needle)) {
 698                                         ADD_TXT_POS(bp, ep, last_index);
 699                                         walk = ep;
 700                         } else
 701                                 walk = scanpos +
 702                                         strlen(parser[last_index].needle);
 703                 } else
 704                         break;
 705         }
 706
 707         /* colorize this line */
 708         if (head.next) {
 709                 const gchar *normal_text = linebuf;
 710
 711                 /* insert URIs */
 712                 for (last = head.next; last != NULL;
 713                      normal_text = last->ep, last = last->next) {
 714                         RemoteURI *uri;
 715
 716                         uri = g_new(RemoteURI, 1);
 717                         if (last->bp - normal_text > 0)
 718                                 gtk_text_insert(text, textfont,
 719                                                 fg_color, NULL,
 720                                                 normal_text,
 721                                                 last->bp - normal_text);
 722                         uri->uri = parser[last->pti].build_uri(last->bp, last->ep);
 723                         uri->start = gtk_text_get_point(text);
 724                         gtk_text_insert(text, textfont, uri_color,
 725                                         NULL, last->bp, last->ep - last->bp);
 726                         uri->end = gtk_text_get_point(text);
 727                         textview->uri_list =
 728                                 g_slist_append(textview->uri_list, uri);
 729                 }
 730
 731                 if (*normal_text)
 732                         gtk_text_insert(text, textfont, fg_color,
 733                                         NULL, normal_text, -1);
 734         } else
 735                 gtk_text_insert(text, textfont, fg_color, NULL,
 736                                 linebuf, -1);
 737 }
 738
 739 #undef ADD_TXT_POS
 740
 741 static void textview_write_line(TextView *textview, const gchar *str,
 742                                 CodeConverter *conv)
 743 {
 744         GtkText *text = GTK_TEXT(textview->text);
 745         gchar buf[BUFFSIZE];
 746         size_t len;
 747         GdkColor *fg_color;
 748         gint quotelevel = -1;
 749
 750         if (!conv)
 751                 strncpy2(buf, str, sizeof(buf));
 752         else if (conv_convert(conv, buf, sizeof(buf), str) < 0) {
 753                 gtk_text_insert(text, textview->msgfont,
 754                                 prefs_common.enable_color
 755                                 ? &error_color : NULL, NULL,
 756                                 "*** Warning: code conversion failed ***\n",
 757                                 -1);
 758                 return;
 759         }
 760
 761         len = strlen(buf);
 762         if (len > 1 && buf[len - 1] == '\n' && buf[len - 2] == '\r') {
 763                 buf[len - 2] = '\n';
 764                 buf[len - 1] = '\0';
 765         }
 766         if (prefs_common.conv_mb_alnum) conv_mb_alnum(buf);
 767         fg_color = NULL;
 768
 769         /* change color of quotation
 770            >, foo>, _> ... ok, <foo>, foo bar>, foo-> ... ng
 771            Up to 3 levels of quotations are detected, and each
 772            level is colored using a different color. */
 773         if (prefs_common.enable_color && strchr(buf, '>')) {
 774                 quotelevel = get_quote_level(buf);
 775
 776                 /* set up the correct foreground color */
 777                 if (quotelevel > 2) {
 778                         /* recycle colors */
 779                         if (prefs_common.recycle_quote_colors)
 780                                 quotelevel %= 3;
 781                         else
 782                                 quotelevel = 2;
 783                 }
 784         }
 785
 786         if (quotelevel == -1)
 787                 fg_color = NULL;
 788         else
 789                 fg_color = &quote_colors[quotelevel];
 790
 791         if (prefs_common.head_space && spacingfont && buf[0] != '\n')
 792                 gtk_text_insert(text, spacingfont, NULL, NULL, " ", 1);
 793
 794         if (prefs_common.enable_color)
 795                 textview_make_clickable_parts(textview, text,
 796                                                   textview->msgfont,
 797                                               fg_color, &uri_color, buf);
 798         else
 799                 gtk_text_insert(text, textview->msgfont, fg_color, NULL,
 800                                 buf, -1);
 801 }
 802
 803 void textview_clear(TextView *textview)
 804 {
 805         GtkText *text = GTK_TEXT(textview->text);
 806
 807         gtk_text_freeze(text);
 808         gtk_text_backward_delete(text, gtk_text_get_length(text));
 809         gtk_text_thaw(text);
 810
 811         textview_uri_list_remove_all(textview->uri_list);
 812         textview->uri_list = NULL;
 813 }
 814
 815 void textview_destroy(TextView *textview)
 816 {
 817         textview_uri_list_remove_all(textview->uri_list);
 818         textview->uri_list = NULL;
 819
 820         if (!textview->scrolledwin_sb->parent)
 821                 gtk_widget_destroy(textview->scrolledwin_sb);
 822         if (!textview->scrolledwin_mb->parent)
 823                 gtk_widget_destroy(textview->scrolledwin_mb);
 824
 825         if (textview->msgfont) {
 826                 textview->msgfont->ascent = textview->prev_ascent;
 827                 textview->msgfont->descent = textview->prev_descent;
 828                 gdk_font_unref(textview->msgfont);
 829         }
 830         if (textview->boldfont)
 831                 gdk_font_unref(textview->boldfont);
 832
 833         g_free(textview);
 834 }
 835
 836 void textview_set_font(TextView *textview, const gchar *codeset)
 837 {
 838         gboolean use_fontset = TRUE;
 839
 840         /* In multi-byte mode, GtkText can't display 8bit characters
 841            correctly, so it must be single-byte mode. */
 842         if (MB_CUR_MAX > 1) {
 843                 if (codeset) {
 844                         if (!strncasecmp(codeset, "ISO-8859-", 9) ||
 845                             !strncasecmp(codeset, "KOI8-", 5)     ||
 846                             !strncasecmp(codeset, "CP", 2)        ||
 847                             !strncasecmp(codeset, "WINDOWS-", 8)  ||
 848                             !strcasecmp(codeset, "BALTIC"))
 849                                 use_fontset = FALSE;
 850                 }
 851         } else
 852                 use_fontset = FALSE;
 853
 854         if (textview->text_is_mb && !use_fontset) {
 855                 GtkWidget *parent;
 856
 857                 parent = textview->scrolledwin_mb->parent;
 858                 gtk_editable_select_region
 859                         (GTK_EDITABLE(textview->text_mb), 0, 0);
 860                 gtk_container_remove(GTK_CONTAINER(parent),
 861                                      textview->scrolledwin_mb);
 862                 gtk_container_add(GTK_CONTAINER(parent),
 863                                   textview->scrolledwin_sb);
 864
 865                 textview->text = textview->text_sb;
 866                 textview->text_is_mb = FALSE;
 867         } else if (!textview->text_is_mb && use_fontset) {
 868                 GtkWidget *parent;
 869
 870                 parent = textview->scrolledwin_sb->parent;
 871                 gtk_editable_select_region
 872                         (GTK_EDITABLE(textview->text_sb), 0, 0);
 873                 gtk_container_remove(GTK_CONTAINER(parent),
 874                                      textview->scrolledwin_sb);
 875                 gtk_container_add(GTK_CONTAINER(parent),
 876                                   textview->scrolledwin_mb);
 877
 878                 textview->text = textview->text_mb;
 879                 textview->text_is_mb = TRUE;
 880         }
 881
 882         if (prefs_common.textfont) {
 883                 if (textview->msgfont) {
 884                         textview->msgfont->ascent = textview->prev_ascent;
 885                         textview->msgfont->descent = textview->prev_descent;
 886                         gdk_font_unref(textview->msgfont);
 887                         textview->msgfont = NULL;
 888                 }
 889                 if (use_fontset)
 890                         textview->msgfont =
 891                                 gdk_fontset_load(prefs_common.textfont);
 892                 else {
 893                         if (MB_CUR_MAX > 1) {
 894                                 FONT_LOAD(textview->msgfont,
 895                                           "-*-courier-medium-r-normal--14-*-*-*-*-*-iso8859-1");
 896                         } else {
 897                                 FONT_LOAD(textview->msgfont,
 898                                           prefs_common.textfont);
 899                         }
 900                 }
 901
 902                 if (textview->msgfont) {
 903                         gint ascent, descent;
 904
 905                         textview->prev_ascent = textview->msgfont->ascent;
 906                         textview->prev_descent = textview->msgfont->descent;
 907                         descent = prefs_common.line_space / 2;
 908                         ascent  = prefs_common.line_space - descent;
 909                         textview->msgfont->ascent  += ascent;
 910                         textview->msgfont->descent += descent;
 911                 }
 912         }
 913
 914         if (!textview->boldfont)
 915                 FONT_LOAD(textview->boldfont, BOLD_FONT);
 916         if (!spacingfont)
 917                 spacingfont = gdk_font_load("-*-*-medium-r-normal--6-*");
 918 }
 919
 920 enum
 921 {
 922         H_DATE          = 0,
 923         H_FROM          = 1,
 924         H_TO            = 2,
 925         H_NEWSGROUPS    = 3,
 926         H_SUBJECT       = 4,
 927         H_CC            = 5,
 928         H_REPLY_TO      = 6,
 929         H_FOLLOWUP_TO   = 7,
 930         H_X_MAILER      = 8,
 931         H_X_NEWSREADER  = 9,
 932         H_USER_AGENT    = 10,
 933         H_ORGANIZATION  = 11,
 934 };
 935
 936 static gboolean hdrequal(char * hdr1, char * hdr2)
 937 {
 938         int len1;
 939         int len2;
 940
 941         len1 = strlen(hdr1);
 942         len2 = strlen(hdr2);
 943         if (hdr1[len1 - 1] == ':')
 944                 len1--;
 945         if (hdr2[len2 - 1] == ':')
 946                 len2--;
 947         if (len1 != len2)
 948                 return 0;
 949         return (strncasecmp(hdr1, hdr2, len1) == 0);
 950 }
 951
 952 static GPtrArray *textview_scan_header(TextView *textview, FILE *fp)
 953 {
 954         /*
 955         static HeaderEntry hentry[] = {{"Date:",         NULL, FALSE},
 956                                        {"From:",         NULL, TRUE},
 957                                        {"To:",           NULL, FALSE},
 958                                        {"Newsgroups:",   NULL, FALSE},
 959                                        {"Subject:",      NULL, TRUE},
 960                                        {"Cc:",           NULL, FALSE},
 961                                        {"Reply-To:",     NULL, FALSE},
 962                                        {"Followup-To:",  NULL, FALSE},
 963                                        {"X-Mailer:",     NULL, TRUE},
 964                                        {"X-Newsreader:", NULL, TRUE},
 965                                        {"User-Agent:",   NULL, TRUE},
 966                                        {"Organization:", NULL, TRUE},
 967                                        {NULL,            NULL, FALSE}};
 968         */
 969         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 970         gint hnum;
 971         HeaderEntry *hp;
 972         GPtrArray *headers;
 973         GSList * l;
 974
 975         int i;
 976         GPtrArray *sorted_headers;
 977
 978         g_return_val_if_fail(fp != NULL, NULL);
 979
 980         if (!prefs_common.display_header) {
 981                 while (fgets(buf, sizeof(buf), fp) != NULL)
 982                         if (buf[0] == '\r' || buf[0] == '\n') break;
 983                 return NULL;
 984         }
 985
 986         headers = g_ptr_array_new();
 987
 988         /*
 989         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 990                != -1) {
 991                 Header *header;
 992
 993                 hp = hentry + hnum;
 994
 995                 header = g_new(Header, 1);
 996                 header->name = g_strndup(buf, strlen(hp->name));
 997                 conv_unmime_header(tmp, sizeof(tmp), buf + strlen(hp->name),
 998                                    NULL);
 999                 header->body = g_strdup(tmp);
1000
1001                 g_ptr_array_add(headers, header);
1002         }
1003         */
1004         //      while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
1005         while (procheader_get_one_field(buf, sizeof(buf), fp, NULL) != -1) {
1006                 gchar * p;
1007                 Header *header;
1008
1009                 if (*buf == ':') continue;
1010                 for (p = buf; *p && *p != ' '; p++) {
1011                         if (*p == ':') {
1012                                 header = g_new(Header, 1);
1013                                 header->name = g_strndup(buf, p - buf + 1);
1014                                 p++;
1015                                 /* while (*p == ' ' || *p == '\t') p++; */
1016                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
1017                                 header->body = g_strdup(tmp);
1018
1019                                 g_ptr_array_add(headers, header);
1020                                 break;
1021                         }
1022                 }
1023         }
1024
1025         sorted_headers = g_ptr_array_new();
1026         for(l = prefs_display_headers ; l != NULL ; l = g_slist_next(l)) {
1027                 HeaderDisplayProp * dp = (HeaderDisplayProp *) l->data;
1028                 for(i = 0 ; i < headers->len ; i++) {
1029                         Header * header = g_ptr_array_index(headers, i);
1030                         if (hdrequal(header->name, dp->name)) {
1031                                 if (dp->hidden) {
1032                                         g_ptr_array_remove_index(headers, i);
1033                                         g_free(header->body);
1034                                         g_free(header->name);
1035                                         g_free(header);
1036                                         i--;
1037                                 }
1038                                 else {
1039                                         g_ptr_array_add(sorted_headers,
1040                                                         header);
1041                                         g_ptr_array_remove_index(headers, i);
1042                                         i--;
1043                                 }
1044                         }
1045                 }
1046         }
1047
1048         for(i = 0 ; i < headers->len ; i++) {
1049                 Header * header = g_ptr_array_index(headers, i);
1050                 g_ptr_array_add(sorted_headers, header);
1051         }
1052
1053         g_ptr_array_free(headers, TRUE);
1054
1055         return sorted_headers;
1056 }
1057
1058 static void textview_show_header(TextView *textview, GPtrArray *headers)
1059 {
1060         GtkText *text = GTK_TEXT(textview->text);
1061         Header *header;
1062         gint i;
1063
1064         g_return_if_fail(headers != NULL);
1065
1066         gtk_text_freeze(text);
1067
1068         for (i = 0; i < headers->len; i++) {
1069                 header = g_ptr_array_index(headers, i);
1070                 g_return_if_fail(header->name != NULL);
1071
1072                 gtk_text_insert(text, textview->boldfont, NULL, NULL,
1073                                 header->name, -1);
1074                 if (prefs_common.enable_color &&
1075                     (strncmp(header->name, "X-Mailer", 8) == 0 ||
1076                      strncmp(header->name, "X-Newsreader", 12) == 0) &&
1077                     strstr(header->body, "Sylpheed") != NULL)
1078                         gtk_text_insert(text, NULL, &emphasis_color, NULL,
1079                                         header->body, -1);
1080                 else {
1081                         if (prefs_common.enable_color) {
1082                                 textview_make_clickable_parts(textview, text,
1083                                                                                           NULL,
1084                                                                                           NULL,
1085                                                                                           &uri_color,
1086                                                                                           header->body);
1087                         }
1088                         else {
1089                                 gtk_text_insert(text, NULL, NULL, NULL,
1090                                                 header->body, -1);
1091                         }
1092                 }
1093                 gtk_text_insert(text, textview->msgfont, NULL, NULL, "\n", 1);
1094         }
1095
1096         gtk_text_insert(text, textview->msgfont, NULL, NULL, "\n", 1);
1097         gtk_text_thaw(text);
1098 }
1099
1100 void textview_scroll_one_line(TextView *textview, gboolean up)
1101 {
1102         GtkText *text = GTK_TEXT(textview->text);
1103         gfloat upper;
1104
1105         if (prefs_common.enable_smooth_scroll) {
1106                 textview_smooth_scroll_one_line(textview, up);
1107                 return;
1108         }
1109
1110         if (!up) {
1111                 upper = text->vadj->upper - text->vadj->page_size;
1112                 if (text->vadj->value < upper) {
1113                         text->vadj->value +=
1114                                 text->vadj->step_increment * 4;
1115                         text->vadj->value =
1116                                 MIN(text->vadj->value, upper);
1117                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1118                                                 "value_changed");
1119                 }
1120         } else {
1121                 if (text->vadj->value > 0.0) {
1122                         text->vadj->value -=
1123                                 text->vadj->step_increment * 4;
1124                         text->vadj->value =
1125                                 MAX(text->vadj->value, 0.0);
1126                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1127                                                 "value_changed");
1128                 }
1129         }
1130 }
1131
1132 gboolean textview_scroll_page(TextView *textview, gboolean up)
1133 {
1134         GtkText *text = GTK_TEXT(textview->text);
1135         gfloat upper;
1136         gfloat page_incr;
1137
1138         if (prefs_common.enable_smooth_scroll)
1139                 return textview_smooth_scroll_page(textview, up);
1140
1141         if (prefs_common.scroll_halfpage)
1142                 page_incr = text->vadj->page_increment / 2;
1143         else
1144                 page_incr = text->vadj->page_increment;
1145
1146         if (!up) {
1147                 upper = text->vadj->upper - text->vadj->page_size;
1148                 if (text->vadj->value < upper) {
1149                         text->vadj->value += page_incr;
1150                         text->vadj->value = MIN(text->vadj->value, upper);
1151                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1152                                                 "value_changed");
1153                 } else
1154                         return FALSE;
1155         } else {
1156                 if (text->vadj->value > 0.0) {
1157                         text->vadj->value -= page_incr;
1158                         text->vadj->value = MAX(text->vadj->value, 0.0);
1159                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1160                                                 "value_changed");
1161                 } else
1162                         return FALSE;
1163         }
1164
1165         return TRUE;
1166 }
1167
1168 static void textview_smooth_scroll_do(TextView *textview,
1169                                       gfloat old_value, gfloat last_value,
1170                                       gint step)
1171 {
1172         GtkText *text = GTK_TEXT(textview->text);
1173         gint change_value;
1174         gboolean up;
1175         gint i;
1176
1177         if (old_value < last_value) {
1178                 change_value = last_value - old_value;
1179                 up = FALSE;
1180         } else {
1181                 change_value = old_value - last_value;
1182                 up = TRUE;
1183         }
1184
1185         gdk_key_repeat_disable();
1186
1187         for (i = step; i <= change_value; i += step) {
1188                 text->vadj->value = old_value + (up ? -i : i);
1189                 gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1190                                         "value_changed");
1191         }
1192
1193         text->vadj->value = last_value;
1194         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj), "value_changed");
1195
1196         gdk_key_repeat_restore();
1197 }
1198
1199 static void textview_smooth_scroll_one_line(TextView *textview, gboolean up)
1200 {
1201         GtkText *text = GTK_TEXT(textview->text);
1202         gfloat upper;
1203         gfloat old_value;
1204         gfloat last_value;
1205
1206         if (!up) {
1207                 upper = text->vadj->upper - text->vadj->page_size;
1208                 if (text->vadj->value < upper) {
1209                         old_value = text->vadj->value;
1210                         last_value = text->vadj->value +
1211                                 text->vadj->step_increment * 4;
1212                         last_value = MIN(last_value, upper);
1213
1214                         textview_smooth_scroll_do(textview, old_value,
1215                                                   last_value,
1216                                                   prefs_common.scroll_step);
1217                 }
1218         } else {
1219                 if (text->vadj->value > 0.0) {
1220                         old_value = text->vadj->value;
1221                         last_value = text->vadj->value -
1222                                 text->vadj->step_increment * 4;
1223                         last_value = MAX(last_value, 0.0);
1224
1225                         textview_smooth_scroll_do(textview, old_value,
1226                                                   last_value,
1227                                                   prefs_common.scroll_step);
1228                 }
1229         }
1230 }
1231
1232 static gboolean textview_smooth_scroll_page(TextView *textview, gboolean up)
1233 {
1234         GtkText *text = GTK_TEXT(textview->text);
1235         gfloat upper;
1236         gfloat page_incr;
1237         gfloat old_value;
1238         gfloat last_value;
1239
1240         if (prefs_common.scroll_halfpage)
1241                 page_incr = text->vadj->page_increment / 2;
1242         else
1243                 page_incr = text->vadj->page_increment;
1244
1245         if (!up) {
1246                 upper = text->vadj->upper - text->vadj->page_size;
1247                 if (text->vadj->value < upper) {
1248                         old_value = text->vadj->value;
1249                         last_value = text->vadj->value + page_incr;
1250                         last_value = MIN(last_value, upper);
1251
1252                         textview_smooth_scroll_do(textview, old_value,
1253                                                   last_value,
1254                                                   prefs_common.scroll_step);
1255                 } else
1256                         return FALSE;
1257         } else {
1258                 if (text->vadj->value > 0.0) {
1259                         old_value = text->vadj->value;
1260                         last_value = text->vadj->value - page_incr;
1261                         last_value = MAX(last_value, 0.0);
1262
1263                         textview_smooth_scroll_do(textview, old_value,
1264                                                   last_value,
1265                                                   prefs_common.scroll_step);
1266                 } else
1267                         return FALSE;
1268         }
1269
1270         return TRUE;
1271 }
1272
1273 static void textview_key_pressed(GtkWidget *widget, GdkEventKey *event,
1274                                  TextView *textview)
1275 {
1276         SummaryView *summaryview = NULL;
1277
1278         if (!event) return;
1279         if (textview->messageview->mainwin)
1280                 summaryview = textview->messageview->mainwin->summaryview;
1281
1282         switch (event->keyval) {
1283         case GDK_Tab:
1284         case GDK_Home:
1285         case GDK_Left:
1286         case GDK_Up:
1287         case GDK_Right:
1288         case GDK_Down:
1289         case GDK_Page_Up:
1290         case GDK_Page_Down:
1291         case GDK_End:
1292         case GDK_Control_L:
1293         case GDK_Control_R:
1294                 break;
1295         case GDK_space:
1296                 if (summaryview)
1297                         summary_pass_key_press_event(summaryview, event);
1298                 else
1299                         textview_scroll_page(textview, FALSE);
1300                 break;
1301         case GDK_BackSpace:
1302         case GDK_Delete:
1303                 textview_scroll_page(textview, TRUE);
1304                 break;
1305         case GDK_Return:
1306                 textview_scroll_one_line(textview,
1307                                          (event->state & GDK_MOD1_MASK) != 0);
1308                 break;
1309         default:
1310                 if (summaryview)
1311                         summary_pass_key_press_event(summaryview, event);
1312                 break;
1313         }
1314 }
1315
1316 static void textview_button_pressed(GtkWidget *widget, GdkEventButton *event,
1317                                     TextView *textview)
1318 {
1319         if (event &&
1320             ((event->button == 1 && event->type == GDK_2BUTTON_PRESS)
1321                 || event->button == 2
1322                 || event->button == 3)) {
1323                 GSList *cur;
1324                 guint current_pos;
1325
1326                 current_pos = GTK_EDITABLE(textview->text)->current_pos;
1327
1328                 for (cur = textview->uri_list; cur != NULL; cur = cur->next) {
1329                         RemoteURI *uri = (RemoteURI *)cur->data;
1330
1331                         if (current_pos >= uri->start &&
1332                             current_pos <  uri->end) {
1333                                 if (!strncasecmp(uri->uri, "mailto:", 7)) {
1334                                         compose_new_with_recipient
1335                                                 (NULL, uri->uri + 7);
1336                                 }
1337                                 else
1338                                         open_uri(uri->uri,
1339                                                  prefs_common.uri_cmd);
1340                         }
1341                 }
1342         }
1343 }
1344
1345 static void textview_uri_list_remove_all(GSList *uri_list)
1346 {
1347         GSList *cur;
1348
1349         for (cur = uri_list; cur != NULL; cur = cur->next) {
1350                 if (cur->data) {
1351                         g_free(((RemoteURI *)cur->data)->uri);
1352                         g_free(cur->data);
1353                 }
1354         }
1355
1356         g_slist_free(uri_list);
1357 }