src/editor/editwidget.c

   1 /*
   2    Editor initialisation and callback handler.
   3
   4    Copyright (C) 1996-2018
   5    Free Software Foundation, Inc.
   6
   7    Written by:
   8    Paul Sheer, 1996, 1997
   9    Andrew Borodin <aborodin@vmail.ru> 2012, 2013
  10
  11    This file is part of the Midnight Commander.
  12
  13    The Midnight Commander is free software: you can redistribute it
  14    and/or modify it under the terms of the GNU General Public License as
  15    published by the Free Software Foundation, either version 3 of the License,
  16    or (at your option) any later version.
  17
  18    The Midnight Commander is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25  */
  26
  27 /** \file
  28  *  \brief Source: editor initialisation and callback handler
  29  *  \author Paul Sheer
  30  *  \date 1996, 1997
  31  */
  32
  33 #include <config.h>
  34
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <sys/types.h>
  40 #include <unistd.h>
  41
  42 #include "lib/global.h"
  43
  44 #include "lib/tty/tty.h"        /* LINES, COLS */
  45 #include "lib/tty/key.h"        /* is_idle() */
  46 #include "lib/tty/color.h"      /* tty_setcolor() */
  47 #include "lib/skin.h"
  48 #include "lib/fileloc.h"        /* EDIT_DIR */
  49 #include "lib/strutil.h"        /* str_term_trim() */
  50 #include "lib/util.h"           /* mc_build_filename() */
  51 #include "lib/widget.h"
  52 #include "lib/mcconfig.h"
  53 #include "lib/event.h"          /* mc_event_raise() */
  54 #ifdef HAVE_CHARSET
  55 #include "lib/charsets.h"
  56 #endif
  57
  58 #include "src/keybind-defaults.h"       /* keybind_lookup_keymap_command() */
  59 #include "src/setup.h"          /* home_dir */
  60 #include "src/filemanager/cmd.h"        /* view_other_cmd(), save_setup_cmd()  */
  61 #include "src/learn.h"          /* learn_keys() */
  62 #include "src/args.h"           /* mcedit_arg_t */
  63
  64 #include "edit-impl.h"
  65 #include "editwidget.h"
  66 #ifdef HAVE_ASPELL
  67 #include "spell.h"
  68 #endif
  69
  70 /*** global variables ****************************************************************************/
  71
  72 char *edit_window_state_char = NULL;
  73 char *edit_window_close_char = NULL;
  74
  75 /*** file scope macro definitions ****************************************************************/
  76
  77 #define WINDOW_MIN_LINES (2 + 2)
  78 #define WINDOW_MIN_COLS (2 + LINE_STATE_WIDTH + 2)
  79
  80 /*** file scope type declarations ****************************************************************/
  81
  82 /*** file scope variables ************************************************************************/
  83 static unsigned int edit_dlg_init_refcounter = 0;
  84
  85 /*** file scope functions ************************************************************************/
  86
  87 static cb_ret_t edit_dialog_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm,
  88                                       void *data);
  89
  90 /* --------------------------------------------------------------------------------------------- */
  91 /**
  92  * Init the 'edit' subsystem
  93  */
  94
  95 static void
  96 edit_dlg_init (void)
  97 {
  98     if (edit_dlg_init_refcounter == 0)
  99     {
 100         edit_window_state_char = mc_skin_get ("widget-editor", "window-state-char", "*");
 101         edit_window_close_char = mc_skin_get ("widget-editor", "window-close-char", "X");
 102
 103 #ifdef HAVE_ASPELL
 104         aspell_init ();
 105 #endif
 106     }
 107
 108     edit_dlg_init_refcounter++;
 109 }
 110
 111 /* --------------------------------------------------------------------------------------------- */
 112 /**
 113  * Deinit the 'edit' subsystem
 114  */
 115
 116 static void
 117 edit_dlg_deinit (void)
 118 {
 119     if (edit_dlg_init_refcounter != 0)
 120         edit_dlg_init_refcounter--;
 121
 122     if (edit_dlg_init_refcounter == 0)
 123     {
 124         g_free (edit_window_state_char);
 125         g_free (edit_window_close_char);
 126
 127 #ifdef HAVE_ASPELL
 128         aspell_clean ();
 129 #endif
 130     }
 131 }
 132
 133 /* --------------------------------------------------------------------------------------------- */
 134 /**
 135  * Show info about editor
 136  */
 137
 138 static void
 139 edit_about (void)
 140 {
 141     quick_widget_t quick_widgets[] = {
 142         /* *INDENT-OFF* */
 143         QUICK_LABEL ("MCEdit " VERSION, NULL),
 144         QUICK_SEPARATOR (TRUE),
 145         QUICK_LABEL (N_("A user friendly text editor\n"
 146                         "written for the Midnight Commander."), NULL),
 147         QUICK_SEPARATOR (FALSE),
 148         QUICK_LABEL (N_("Copyright (C) 1996-2018 the Free Software Foundation"), NULL),
 149         QUICK_START_BUTTONS (TRUE, TRUE),
 150             QUICK_BUTTON (N_("&OK"), B_ENTER, NULL, NULL),
 151         QUICK_END
 152         /* *INDENT-ON* */
 153     };
 154
 155     quick_dialog_t qdlg = {
 156         -1, -1, 40,
 157         N_("About"), "[Internal File Editor]",
 158         quick_widgets, NULL, NULL
 159     };
 160
 161     quick_widgets[0].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 162     quick_widgets[2].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 163     quick_widgets[4].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 164
 165     (void) quick_dialog (&qdlg);
 166 }
 167
 168 /* --------------------------------------------------------------------------------------------- */
 169 /**
 170  * Show a help window
 171  */
 172
 173 static void
 174 edit_help (void)
 175 {
 176     ev_help_t event_data = { NULL, "[Internal File Editor]" };
 177     mc_event_raise (MCEVENT_GROUP_CORE, "help", &event_data);
 178 }
 179
 180 /* --------------------------------------------------------------------------------------------- */
 181 /**
 182  * Callback for the iteration of objects in the 'editors' array.
 183  * Resize the editor window.
 184  *
 185  * @param data      probably WEdit object
 186  * @param user_data unused
 187  */
 188
 189 static void
 190 edit_dialog_resize_cb (void *data, void *user_data)
 191 {
 192     Widget *w = WIDGET (data);
 193
 194     (void) user_data;
 195
 196     if (edit_widget_is_editor (w) && ((WEdit *) w)->fullscreen)
 197     {
 198         Widget *wh = WIDGET (w->owner);
 199
 200         w->lines = wh->lines - 2;
 201         w->cols = wh->cols;
 202     }
 203 }
 204
 205 /* --------------------------------------------------------------------------------------------- */
 206 /**
 207  * Restore saved window size.
 208  *
 209  * @param edit editor object
 210  */
 211
 212 static void
 213 edit_restore_size (WEdit * edit)
 214 {
 215     Widget *w = WIDGET (edit);
 216
 217     edit->drag_state = MCEDIT_DRAG_NONE;
 218     w->mouse.forced_capture = FALSE;
 219     widget_set_size (w, edit->y_prev, edit->x_prev, edit->lines_prev, edit->cols_prev);
 220     dlg_redraw (w->owner);
 221 }
 222
 223 /* --------------------------------------------------------------------------------------------- */
 224 /**
 225  * Move window by one row or column in any direction.
 226  *
 227  * @param edit    editor object
 228  * @param command direction (CK_Up, CK_Down, CK_Left, CK_Right)
 229  */
 230
 231 static void
 232 edit_window_move (WEdit * edit, long command)
 233 {
 234     Widget *w = WIDGET (edit);
 235     Widget *wh = WIDGET (w->owner);
 236
 237     switch (command)
 238     {
 239     case CK_Up:
 240         if (w->y > wh->y + 1)   /* menubar */
 241             w->y--;
 242         break;
 243     case CK_Down:
 244         if (w->y < wh->y + wh->lines - 2)       /* buttonbar */
 245             w->y++;
 246         break;
 247     case CK_Left:
 248         if (w->x + w->cols > wh->x)
 249             w->x--;
 250         break;
 251     case CK_Right:
 252         if (w->x < wh->x + wh->cols)
 253             w->x++;
 254         break;
 255     default:
 256         return;
 257     }
 258
 259     edit->force |= REDRAW_PAGE;
 260     dlg_redraw (w->owner);
 261 }
 262
 263 /* --------------------------------------------------------------------------------------------- */
 264 /**
 265  * Resize window by one row or column in any direction.
 266  *
 267  * @param edit    editor object
 268  * @param command direction (CK_Up, CK_Down, CK_Left, CK_Right)
 269  */
 270
 271 static void
 272 edit_window_resize (WEdit * edit, long command)
 273 {
 274     Widget *w = WIDGET (edit);
 275     Widget *wh = WIDGET (w->owner);
 276
 277     switch (command)
 278     {
 279     case CK_Up:
 280         if (w->lines > WINDOW_MIN_LINES)
 281             w->lines--;
 282         break;
 283     case CK_Down:
 284         if (w->y + w->lines < wh->y + wh->lines - 1)    /* buttonbar */
 285             w->lines++;
 286         break;
 287     case CK_Left:
 288         if (w->cols > WINDOW_MIN_COLS)
 289             w->cols--;
 290         break;
 291     case CK_Right:
 292         if (w->x + w->cols < wh->x + wh->cols)
 293             w->cols++;
 294         break;
 295     default:
 296         return;
 297     }
 298
 299     edit->force |= REDRAW_COMPLETELY;
 300     dlg_redraw (w->owner);
 301 }
 302
 303 /* --------------------------------------------------------------------------------------------- */
 304 /**
 305  * Get hotkey by number.
 306  *
 307  * @param n number
 308  * @return hotkey
 309  */
 310
 311 static unsigned char
 312 get_hotkey (int n)
 313 {
 314     return (n <= 9) ? '0' + n : 'a' + n - 10;
 315 }
 316
 317 /* --------------------------------------------------------------------------------------------- */
 318
 319 static void
 320 edit_window_list (const WDialog * h)
 321 {
 322     const size_t dlg_num = g_list_length (h->widgets) - 2;      /* 2 = skip menu and buttonbar */
 323     int lines, cols;
 324     Listbox *listbox;
 325     GList *w;
 326     WEdit *selected;
 327     int i = 0;
 328
 329     lines = MIN ((size_t) (LINES * 2 / 3), dlg_num);
 330     cols = COLS * 2 / 3;
 331
 332     listbox = create_listbox_window (lines, cols, _("Open files"), "[Open files]");
 333
 334     for (w = h->widgets; w != NULL; w = g_list_next (w))
 335         if (edit_widget_is_editor (CONST_WIDGET (w->data)))
 336         {
 337             WEdit *e = (WEdit *) w->data;
 338             char *fname;
 339
 340             if (e->filename_vpath == NULL)
 341                 fname = g_strdup_printf ("%c [%s]", e->modified ? '*' : ' ', _("NoName"));
 342             else
 343                 fname =
 344                     g_strdup_printf ("%c%s", e->modified ? '*' : ' ',
 345                                      vfs_path_as_str (e->filename_vpath));
 346
 347             listbox_add_item (listbox->list, LISTBOX_APPEND_AT_END, get_hotkey (i++),
 348                               str_term_trim (fname, WIDGET (listbox->list)->cols - 2), e, FALSE);
 349             g_free (fname);
 350         }
 351
 352     selected = run_listbox_with_data (listbox, h->current->data);
 353     if (selected != NULL)
 354         widget_select (WIDGET (selected));
 355 }
 356
 357 /* --------------------------------------------------------------------------------------------- */
 358
 359 static char *
 360 edit_get_shortcut (long command)
 361 {
 362     const char *ext_map;
 363     const char *shortcut = NULL;
 364
 365     shortcut = keybind_lookup_keymap_shortcut (editor_map, command);
 366     if (shortcut != NULL)
 367         return g_strdup (shortcut);
 368
 369     ext_map = keybind_lookup_keymap_shortcut (editor_map, CK_ExtendedKeyMap);
 370     if (ext_map != NULL)
 371         shortcut = keybind_lookup_keymap_shortcut (editor_x_map, command);
 372     if (shortcut != NULL)
 373         return g_strdup_printf ("%s %s", ext_map, shortcut);
 374
 375     return NULL;
 376 }
 377
 378 /* --------------------------------------------------------------------------------------------- */
 379
 380 static char *
 381 edit_get_title (const WDialog * h, size_t len)
 382 {
 383     const WEdit *edit = find_editor (h);
 384     const char *modified = edit->modified ? "(*) " : "    ";
 385     const char *file_label;
 386     char *filename;
 387
 388     len -= 4;
 389
 390     if (edit->filename_vpath == NULL)
 391         filename = g_strdup (_("[NoName]"));
 392     else
 393         filename = g_strdup (vfs_path_as_str (edit->filename_vpath));
 394
 395     file_label = str_term_trim (filename, len - str_term_width1 (_("Edit: ")));
 396     g_free (filename);
 397
 398     return g_strconcat (_("Edit: "), modified, file_label, (char *) NULL);
 399 }
 400
 401 /* --------------------------------------------------------------------------------------------- */
 402
 403 static cb_ret_t
 404 edit_dialog_command_execute (WDialog * h, long command)
 405 {
 406     Widget *wh = WIDGET (h);
 407     cb_ret_t ret = MSG_HANDLED;
 408
 409     switch (command)
 410     {
 411     case CK_EditNew:
 412         edit_add_window (h, wh->y + 1, wh->x, wh->lines - 2, wh->cols, NULL, 0);
 413         break;
 414     case CK_EditFile:
 415         edit_load_cmd (h);
 416         break;
 417     case CK_EditSyntaxFile:
 418         edit_load_syntax_file (h);
 419         break;
 420     case CK_EditUserMenu:
 421         edit_load_menu_file (h);
 422         break;
 423     case CK_Close:
 424         /* if there are no opened files anymore, close MC editor */
 425         if (edit_widget_is_editor (CONST_WIDGET (h->current->data)) &&
 426             edit_close_cmd ((WEdit *) h->current->data) && find_editor (h) == NULL)
 427             dlg_stop (h);
 428         break;
 429     case CK_Help:
 430         edit_help ();
 431         /* edit->force |= REDRAW_COMPLETELY; */
 432         break;
 433     case CK_Menu:
 434         edit_menu_cmd (h);
 435         break;
 436     case CK_Quit:
 437     case CK_Cancel:
 438         /* don't close editor due to SIGINT, but stop move/resize window */
 439         {
 440             Widget *w = WIDGET (h->current->data);
 441
 442             if (edit_widget_is_editor (w) && ((WEdit *) w)->drag_state != MCEDIT_DRAG_NONE)
 443                 edit_restore_size ((WEdit *) w);
 444             else if (command == CK_Quit)
 445                 dlg_stop (h);
 446         }
 447         break;
 448     case CK_About:
 449         edit_about ();
 450         break;
 451     case CK_SyntaxOnOff:
 452         edit_syntax_onoff_cmd (h);
 453         break;
 454     case CK_ShowTabTws:
 455         edit_show_tabs_tws_cmd (h);
 456         break;
 457     case CK_ShowMargin:
 458         edit_show_margin_cmd (h);
 459         break;
 460     case CK_ShowNumbers:
 461         edit_show_numbers_cmd (h);
 462         break;
 463     case CK_Refresh:
 464         edit_refresh_cmd ();
 465         break;
 466     case CK_Shell:
 467         view_other_cmd ();
 468         break;
 469     case CK_LearnKeys:
 470         learn_keys ();
 471         break;
 472     case CK_WindowMove:
 473     case CK_WindowResize:
 474         if (edit_widget_is_editor (CONST_WIDGET (h->current->data)))
 475             edit_handle_move_resize ((WEdit *) h->current->data, command);
 476         break;
 477     case CK_WindowList:
 478         edit_window_list (h);
 479         break;
 480     case CK_WindowNext:
 481         dlg_select_next_widget (h);
 482         break;
 483     case CK_WindowPrev:
 484         dlg_select_prev_widget (h);
 485         break;
 486     case CK_Options:
 487         edit_options_dialog (h);
 488         break;
 489     case CK_OptionsSaveMode:
 490         edit_save_mode_cmd ();
 491         break;
 492     case CK_SaveSetup:
 493         save_setup_cmd ();
 494         break;
 495     default:
 496         ret = MSG_NOT_HANDLED;
 497         break;
 498     }
 499
 500     return ret;
 501 }
 502
 503 /* --------------------------------------------------------------------------------------------- */
 504 /*
 505  * Translate the keycode into either 'command' or 'char_for_insertion'.
 506  * 'command' is one of the editor commands from cmddef.h.
 507  */
 508
 509 static gboolean
 510 edit_translate_key (WEdit * edit, long x_key, int *cmd, int *ch)
 511 {
 512     long command = CK_InsertChar;
 513     int char_for_insertion = -1;
 514
 515     /* an ordinary insertable character */
 516     if (!edit->extmod && x_key < 256)
 517     {
 518 #ifndef HAVE_CHARSET
 519         if (is_printable (x_key))
 520         {
 521             char_for_insertion = x_key;
 522             goto fin;
 523         }
 524 #else
 525         int c;
 526
 527         if (edit->charpoint >= 4)
 528         {
 529             edit->charpoint = 0;
 530             edit->charbuf[edit->charpoint] = '\0';
 531         }
 532         if (edit->charpoint < 4)
 533         {
 534             edit->charbuf[edit->charpoint++] = x_key;
 535             edit->charbuf[edit->charpoint] = '\0';
 536         }
 537
 538         /* input from 8-bit locale */
 539         if (!mc_global.utf8_display)
 540         {
 541             /* source in 8-bit codeset */
 542             c = convert_from_input_c (x_key);
 543
 544             if (is_printable (c))
 545             {
 546                 if (!edit->utf8)
 547                     char_for_insertion = c;
 548                 else
 549                     char_for_insertion = convert_from_8bit_to_utf_c2 ((char) x_key);
 550                 goto fin;
 551             }
 552         }
 553         else
 554         {
 555             /* UTF-8 locale */
 556             int res;
 557
 558             res = str_is_valid_char (edit->charbuf, edit->charpoint);
 559             if (res < 0 && res != -2)
 560             {
 561                 edit->charpoint = 0;    /* broken multibyte char, skip */
 562                 goto fin;
 563             }
 564
 565             if (edit->utf8)
 566             {
 567                 /* source in UTF-8 codeset */
 568                 if (res < 0)
 569                 {
 570                     char_for_insertion = x_key;
 571                     goto fin;
 572                 }
 573
 574                 edit->charbuf[edit->charpoint] = '\0';
 575                 edit->charpoint = 0;
 576                 if (g_unichar_isprint (g_utf8_get_char (edit->charbuf)))
 577                 {
 578                     char_for_insertion = x_key;
 579                     goto fin;
 580                 }
 581             }
 582             else
 583             {
 584                 /* 8-bit source */
 585                 if (res < 0)
 586                 {
 587                     /* not finised multibyte input (in meddle multibyte utf-8 char) */
 588                     goto fin;
 589                 }
 590
 591                 if (g_unichar_isprint (g_utf8_get_char (edit->charbuf)))
 592                 {
 593                     c = convert_from_utf_to_current (edit->charbuf);
 594                     edit->charbuf[0] = '\0';
 595                     edit->charpoint = 0;
 596                     char_for_insertion = c;
 597                     goto fin;
 598                 }
 599
 600                 /* unprinteble utf input, skip it */
 601                 edit->charbuf[0] = '\0';
 602                 edit->charpoint = 0;
 603             }
 604         }
 605 #endif /* HAVE_CHARSET */
 606     }
 607
 608     /* Commands specific to the key emulation */
 609     if (edit->extmod)
 610     {
 611         edit->extmod = FALSE;
 612         command = keybind_lookup_keymap_command (editor_x_map, x_key);
 613     }
 614     else
 615         command = keybind_lookup_keymap_command (editor_map, x_key);
 616
 617     if (command == CK_IgnoreKey)
 618         command = CK_InsertChar;
 619
 620   fin:
 621     *cmd = (int) command;       /* FIXME */
 622     *ch = char_for_insertion;
 623
 624     return !(command == CK_InsertChar && char_for_insertion == -1);
 625 }
 626
 627
 628 /* --------------------------------------------------------------------------------------------- */
 629
 630 static inline void
 631 edit_quit (WDialog * h)
 632 {
 633     GList *l;
 634     WEdit *e = NULL;
 635
 636     /* don't stop the dialog before final decision */
 637     widget_set_state (WIDGET (h), WST_ACTIVE, TRUE);
 638
 639     for (l = h->widgets; l != NULL; l = g_list_next (l))
 640         if (edit_widget_is_editor (CONST_WIDGET (l->data)))
 641         {
 642             e = (WEdit *) l->data;
 643
 644             if (e->drag_state != MCEDIT_DRAG_NONE)
 645             {
 646                 edit_restore_size (e);
 647                 return;
 648             }
 649
 650             if (e->modified)
 651             {
 652                 widget_select (WIDGET (e));
 653
 654                 if (!edit_ok_to_exit (e))
 655                     return;
 656             }
 657         }
 658
 659     /* no editors in dialog at all or no any file required to be saved */
 660     if (e == NULL || l == NULL)
 661         dlg_stop (h);
 662 }
 663
 664 /* --------------------------------------------------------------------------------------------- */
 665
 666 static inline void
 667 edit_set_buttonbar (WEdit * edit, WButtonBar * bb)
 668 {
 669     buttonbar_set_label (bb, 1, Q_ ("ButtonBar|Help"), editor_map, NULL);
 670     buttonbar_set_label (bb, 2, Q_ ("ButtonBar|Save"), editor_map, WIDGET (edit));
 671     buttonbar_set_label (bb, 3, Q_ ("ButtonBar|Mark"), editor_map, WIDGET (edit));
 672     buttonbar_set_label (bb, 4, Q_ ("ButtonBar|Replac"), editor_map, WIDGET (edit));
 673     buttonbar_set_label (bb, 5, Q_ ("ButtonBar|Copy"), editor_map, WIDGET (edit));
 674     buttonbar_set_label (bb, 6, Q_ ("ButtonBar|Move"), editor_map, WIDGET (edit));
 675     buttonbar_set_label (bb, 7, Q_ ("ButtonBar|Search"), editor_map, WIDGET (edit));
 676     buttonbar_set_label (bb, 8, Q_ ("ButtonBar|Delete"), editor_map, WIDGET (edit));
 677     buttonbar_set_label (bb, 9, Q_ ("ButtonBar|PullDn"), editor_map, NULL);
 678     buttonbar_set_label (bb, 10, Q_ ("ButtonBar|Quit"), editor_map, NULL);
 679 }
 680
 681 /* --------------------------------------------------------------------------------------------- */
 682
 683 static void
 684 edit_total_update (WEdit * edit)
 685 {
 686     edit_find_bracket (edit);
 687     edit->force |= REDRAW_COMPLETELY;
 688     edit_update_curs_row (edit);
 689     edit_update_screen (edit);
 690 }
 691
 692 /* --------------------------------------------------------------------------------------------- */
 693
 694 static gboolean
 695 edit_update_cursor (WEdit * edit, const mouse_event_t * event)
 696 {
 697     int x, y;
 698     gboolean done;
 699
 700     x = event->x - (edit->fullscreen ? 0 : 1);
 701     y = event->y - (edit->fullscreen ? 0 : 1);
 702
 703     if (edit->mark2 != -1 && event->msg == MSG_MOUSE_UP)
 704         return TRUE;            /* don't do anything */
 705
 706     if (event->msg == MSG_MOUSE_DOWN || event->msg == MSG_MOUSE_UP)
 707         edit_push_key_press (edit);
 708
 709     if (!option_cursor_beyond_eol)
 710         edit->prev_col = x - edit->start_col - option_line_state_width;
 711     else
 712     {
 713         long line_len;
 714
 715         line_len =
 716             edit_move_forward3 (edit, edit_buffer_get_current_bol (&edit->buffer), 0,
 717                                 edit_buffer_get_current_eol (&edit->buffer));
 718
 719         if (x > line_len - 1)
 720         {
 721             edit->over_col = x - line_len - edit->start_col - option_line_state_width;
 722             edit->prev_col = line_len;
 723         }
 724         else
 725         {
 726             edit->over_col = 0;
 727             edit->prev_col = x - option_line_state_width - edit->start_col;
 728         }
 729     }
 730
 731     if (y > edit->curs_row)
 732         edit_move_down (edit, y - edit->curs_row, FALSE);
 733     else if (y < edit->curs_row)
 734         edit_move_up (edit, edit->curs_row - y, FALSE);
 735     else
 736         edit_move_to_prev_col (edit, edit_buffer_get_current_bol (&edit->buffer));
 737
 738     if (event->msg == MSG_MOUSE_CLICK)
 739     {
 740         edit_mark_cmd (edit, TRUE);     /* reset */
 741         edit->highlight = 0;
 742     }
 743
 744     done = (event->msg != MSG_MOUSE_DRAG);
 745     if (done)
 746         edit_mark_cmd (edit, FALSE);
 747
 748     return done;
 749 }
 750
 751 /* --------------------------------------------------------------------------------------------- */
 752 /** Callback for the edit dialog */
 753
 754 static cb_ret_t
 755 edit_dialog_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
 756 {
 757     WMenuBar *menubar;
 758     WButtonBar *buttonbar;
 759     WDialog *h = DIALOG (w);
 760
 761     switch (msg)
 762     {
 763     case MSG_INIT:
 764         edit_dlg_init ();
 765         return MSG_HANDLED;
 766
 767     case MSG_DRAW:
 768         /* don't use dlg_default_repaint() -- we don't need a frame */
 769         tty_setcolor (EDITOR_BACKGROUND);
 770         dlg_erase (h);
 771         return MSG_HANDLED;
 772
 773     case MSG_RESIZE:
 774         menubar = find_menubar (h);
 775         buttonbar = find_buttonbar (h);
 776         /* dlg_set_size() is surplus for this case */
 777         w->lines = LINES;
 778         w->cols = COLS;
 779         widget_set_size (WIDGET (buttonbar), w->lines - 1, w->x, 1, w->cols);
 780         widget_set_size (WIDGET (menubar), w->y, w->x, 1, w->cols);
 781         menubar_arrange (menubar);
 782         g_list_foreach (h->widgets, (GFunc) edit_dialog_resize_cb, NULL);
 783         return MSG_HANDLED;
 784
 785     case MSG_ACTION:
 786         {
 787             /* Handle shortcuts, menu, and buttonbar. */
 788
 789             cb_ret_t result;
 790
 791             result = edit_dialog_command_execute (h, parm);
 792
 793             /* We forward any commands coming from the menu, and which haven't been
 794                handled by the dialog, to the focused WEdit window. */
 795             if (result == MSG_NOT_HANDLED && sender == WIDGET (find_menubar (h)))
 796                 result = send_message (h->current->data, NULL, MSG_ACTION, parm, NULL);
 797
 798             return result;
 799         }
 800
 801     case MSG_KEY:
 802         {
 803             Widget *we = WIDGET (h->current->data);
 804             cb_ret_t ret = MSG_NOT_HANDLED;
 805
 806             if (edit_widget_is_editor (we))
 807             {
 808                 WEdit *e = (WEdit *) we;
 809                 long command;
 810
 811                 if (!e->extmod)
 812                     command = keybind_lookup_keymap_command (editor_map, parm);
 813                 else
 814                     command = keybind_lookup_keymap_command (editor_x_map, parm);
 815
 816                 if (command == CK_IgnoreKey)
 817                     e->extmod = FALSE;
 818                 else
 819                 {
 820                     ret = edit_dialog_command_execute (h, command);
 821                     /* if command was not handled, keep the extended mode
 822                        for the further key processing */
 823                     if (ret == MSG_HANDLED)
 824                         e->extmod = FALSE;
 825                 }
 826             }
 827
 828             /*
 829              * Due to the "end of bracket" escape the editor sees input with is_idle() == false
 830              * (expects more characters) and hence doesn't yet refresh the screen, but then
 831              * no further characters arrive (there's only an "end of bracket" which is swallowed
 832              * by tty_get_event()), so you end up with a screen that's not refreshed after pasting.
 833              * So let's trigger an IDLE signal.
 834              */
 835             if (!is_idle ())
 836                 widget_idle (w, TRUE);
 837             return ret;
 838         }
 839
 840         /* hardcoded menu hotkeys (see edit_drop_hotkey_menu) */
 841     case MSG_UNHANDLED_KEY:
 842         return edit_drop_hotkey_menu (h, parm) ? MSG_HANDLED : MSG_NOT_HANDLED;
 843
 844     case MSG_VALIDATE:
 845         edit_quit (h);
 846         return MSG_HANDLED;
 847
 848     case MSG_END:
 849         edit_dlg_deinit ();
 850         return MSG_HANDLED;
 851
 852     case MSG_IDLE:
 853         widget_idle (w, FALSE);
 854         return send_message (h->current->data, NULL, MSG_IDLE, 0, NULL);
 855
 856     default:
 857         return dlg_default_callback (w, sender, msg, parm, data);
 858     }
 859 }
 860
 861 /* --------------------------------------------------------------------------------------------- */
 862
 863 /**
 864  * Handle mouse events of editor screen.
 865  *
 866  * @param w Widget object (the editor)
 867  * @param msg mouse event message
 868  * @param event mouse event data
 869  */
 870 static void
 871 edit_dialog_mouse_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
 872 {
 873     gboolean unhandled = TRUE;
 874
 875     if (msg == MSG_MOUSE_DOWN && event->y == 0)
 876     {
 877         WDialog *h = DIALOG (w);
 878         WMenuBar *b;
 879
 880         b = find_menubar (h);
 881
 882         if (!widget_get_state (WIDGET (b), WST_FOCUSED))
 883         {
 884             /* menubar */
 885
 886             GList *l;
 887             GList *top = NULL;
 888             int x;
 889
 890             /* Try find top fullscreen window */
 891             for (l = h->widgets; l != NULL; l = g_list_next (l))
 892                 if (edit_widget_is_editor (CONST_WIDGET (l->data))
 893                     && ((WEdit *) l->data)->fullscreen)
 894                     top = l;
 895
 896             /* Handle fullscreen/close buttons in the top line */
 897             x = w->cols - 6;
 898
 899             if (top != NULL && event->x >= x)
 900             {
 901                 WEdit *e = (WEdit *) top->data;
 902
 903                 if (top != h->current)
 904                 {
 905                     /* Window is not active. Activate it */
 906                     widget_select (WIDGET (e));
 907                 }
 908
 909                 /* Handle buttons */
 910                 if (event->x - x <= 2)
 911                     edit_toggle_fullscreen (e);
 912                 else
 913                     send_message (h, NULL, MSG_ACTION, CK_Close, NULL);
 914
 915                 unhandled = FALSE;
 916             }
 917
 918             if (unhandled)
 919                 menubar_activate (b, drop_menus, -1);
 920         }
 921     }
 922
 923     /* Continue handling of unhandled event in window or menu */
 924     event->result.abort = unhandled;
 925 }
 926
 927 /* --------------------------------------------------------------------------------------------- */
 928
 929 static cb_ret_t
 930 edit_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
 931 {
 932     WEdit *e = (WEdit *) w;
 933
 934     switch (msg)
 935     {
 936     case MSG_FOCUS:
 937         edit_set_buttonbar (e, find_buttonbar (w->owner));
 938         return MSG_HANDLED;
 939
 940     case MSG_DRAW:
 941         e->force |= REDRAW_COMPLETELY;
 942         edit_update_screen (e);
 943         return MSG_HANDLED;
 944
 945     case MSG_KEY:
 946         {
 947             int cmd, ch;
 948             cb_ret_t ret = MSG_NOT_HANDLED;
 949
 950             /* The user may override the access-keys for the menu bar. */
 951             if (macro_index == -1 && edit_execute_macro (e, parm))
 952             {
 953                 edit_update_screen (e);
 954                 ret = MSG_HANDLED;
 955             }
 956             else if (edit_translate_key (e, parm, &cmd, &ch))
 957             {
 958                 edit_execute_key_command (e, cmd, ch);
 959                 edit_update_screen (e);
 960                 ret = MSG_HANDLED;
 961             }
 962
 963             return ret;
 964         }
 965
 966     case MSG_ACTION:
 967         /* command from menubar or buttonbar */
 968         edit_execute_key_command (e, parm, -1);
 969         edit_update_screen (e);
 970         return MSG_HANDLED;
 971
 972     case MSG_CURSOR:
 973         {
 974             int y, x;
 975
 976             y = (e->fullscreen ? 0 : 1) + EDIT_TEXT_VERTICAL_OFFSET + e->curs_row;
 977             x = (e->fullscreen ? 0 : 1) + EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width +
 978                 e->curs_col + e->start_col + e->over_col;
 979
 980             widget_move (w, y, x);
 981             return MSG_HANDLED;
 982         }
 983
 984     case MSG_IDLE:
 985         edit_update_screen (e);
 986         return MSG_HANDLED;
 987
 988     case MSG_DESTROY:
 989         edit_clean (e);
 990         return MSG_HANDLED;
 991
 992     default:
 993         return widget_default_callback (w, sender, msg, parm, data);
 994     }
 995 }
 996
 997 /* --------------------------------------------------------------------------------------------- */
 998
 999 /**
1000  * Handle move/resize mouse events.
1001  */
1002 static void
1003 edit_mouse_handle_move_resize (Widget * w, mouse_msg_t msg, mouse_event_t * event)
1004 {
1005     WEdit *edit = (WEdit *) (w);
1006     Widget *h = WIDGET (w->owner);
1007     int global_x, global_y;
1008
1009     if (msg == MSG_MOUSE_UP)
1010     {
1011         /* Exit move/resize mode. */
1012         edit_execute_cmd (edit, CK_Enter, -1);
1013         edit_update_screen (edit);      /* Paint the buttonbar over our possibly overlapping frame. */
1014         return;
1015     }
1016
1017     if (msg != MSG_MOUSE_DRAG)
1018         /**
1019          * We ignore any other events. Specifically, MSG_MOUSE_DOWN.
1020          *
1021          * When the move/resize is initiated by the menu, we let the user
1022          * stop it by clicking with the mouse. Which is why we don't want
1023          * a mouse down to affect the window.
1024          */
1025         return;
1026
1027     /* Convert point to global coordinates for easier calculations. */
1028     global_x = event->x + w->x;
1029     global_y = event->y + w->y;
1030
1031     /* Clamp the point to the dialog's client area. */
1032     global_y = CLAMP (global_y, h->y + 1, h->y + h->lines - 2); /* Status line, buttonbar */
1033     global_x = CLAMP (global_x, h->x, h->x + h->cols - 1);      /* Currently a no-op, as the dialog has no left/right margins. */
1034
1035     if (edit->drag_state == MCEDIT_DRAG_MOVE)
1036     {
1037         w->y = global_y;
1038         w->x = global_x - edit->drag_state_start;
1039     }
1040     else if (edit->drag_state == MCEDIT_DRAG_RESIZE)
1041     {
1042         w->lines = MAX (WINDOW_MIN_LINES, global_y - w->y + 1);
1043         w->cols = MAX (WINDOW_MIN_COLS, global_x - w->x + 1);
1044     }
1045
1046     edit->force |= REDRAW_COMPLETELY;   /* Not really needed as WEdit's MSG_DRAW already does this. */
1047
1048     /* We draw the whole dialog because dragging/resizing exposes area beneath. */
1049     dlg_redraw (w->owner);
1050 }
1051
1052 /* --------------------------------------------------------------------------------------------- */
1053
1054 /**
1055  * Handle mouse events of editor window
1056  *
1057  * @param w Widget object (the editor window)
1058  * @param msg mouse event message
1059  * @param event mouse event data
1060  */
1061 static void
1062 edit_mouse_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
1063 {
1064     WEdit *edit = (WEdit *) w;
1065     /* buttons' distance from right edge */
1066     int dx = edit->fullscreen ? 0 : 2;
1067     /* location of 'Close' and 'Toggle fullscreen' pictograms */
1068     int close_x, toggle_fullscreen_x;
1069
1070     close_x = (w->cols - 1) - dx - 1;
1071     toggle_fullscreen_x = close_x - 3;
1072
1073     if (edit->drag_state != MCEDIT_DRAG_NONE)
1074     {
1075         /* window is being resized/moved */
1076         edit_mouse_handle_move_resize (w, msg, event);
1077         return;
1078     }
1079
1080     /* If it's the last line on the screen, we abort the event to make the
1081      * system channel it to the overlapping buttonbar instead. We have to do
1082      * this because a WEdit has the WOP_TOP_SELECT flag, which makes it above
1083      * the buttonbar in Z-order. */
1084     if (msg == MSG_MOUSE_DOWN && (event->y + w->y == LINES - 1))
1085     {
1086         event->result.abort = TRUE;
1087         return;
1088     }
1089
1090     switch (msg)
1091     {
1092     case MSG_MOUSE_DOWN:
1093         widget_select (w);
1094         edit_update_curs_row (edit);
1095         edit_update_curs_col (edit);
1096
1097         if (!edit->fullscreen)
1098         {
1099             if (event->y == 0)
1100             {
1101                 if (event->x >= close_x - 1 && event->x <= close_x + 1)
1102                     ;           /* do nothing (see MSG_MOUSE_CLICK) */
1103                 else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
1104                     ;           /* do nothing (see MSG_MOUSE_CLICK) */
1105                 else
1106                 {
1107                     /* start window move */
1108                     edit_execute_cmd (edit, CK_WindowMove, -1);
1109                     edit_update_screen (edit);  /* Paint the buttonbar over our possibly overlapping frame. */
1110                     edit->drag_state_start = event->x;
1111                 }
1112                 break;
1113             }
1114
1115             if (event->y == w->lines - 1 && event->x == w->cols - 1)
1116             {
1117                 /* bottom-right corner -- start window resize */
1118                 edit_execute_cmd (edit, CK_WindowResize, -1);
1119                 break;
1120             }
1121         }
1122
1123         MC_FALLTHROUGH;         /* to start/stop text selection */
1124
1125     case MSG_MOUSE_UP:
1126         edit_update_cursor (edit, event);
1127         edit_total_update (edit);
1128         break;
1129
1130     case MSG_MOUSE_CLICK:
1131         if (event->y == 0)
1132         {
1133             if (event->x >= close_x - 1 && event->x <= close_x + 1)
1134                 send_message (w->owner, NULL, MSG_ACTION, CK_Close, NULL);
1135             else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
1136                 edit_toggle_fullscreen (edit);
1137             else if (!edit->fullscreen && event->count == GPM_DOUBLE)
1138                 /* double click on top line (toggle fullscreen) */
1139                 edit_toggle_fullscreen (edit);
1140         }
1141         else if (event->count == GPM_DOUBLE)
1142         {
1143             /* double click */
1144             edit_mark_current_word_cmd (edit);
1145             edit_total_update (edit);
1146         }
1147         else if (event->count == GPM_TRIPLE)
1148         {
1149             /* triple click: works in GPM only, not in xterm */
1150             edit_mark_current_line_cmd (edit);
1151             edit_total_update (edit);
1152         }
1153         break;
1154
1155     case MSG_MOUSE_DRAG:
1156         edit_update_cursor (edit, event);
1157         edit_total_update (edit);
1158         break;
1159
1160     case MSG_MOUSE_SCROLL_UP:
1161         edit_move_up (edit, 2, TRUE);
1162         edit_total_update (edit);
1163         break;
1164
1165     case MSG_MOUSE_SCROLL_DOWN:
1166         edit_move_down (edit, 2, TRUE);
1167         edit_total_update (edit);
1168         break;
1169
1170     default:
1171         break;
1172     }
1173 }
1174
1175 /* --------------------------------------------------------------------------------------------- */
1176 /*** public functions ****************************************************************************/
1177 /* --------------------------------------------------------------------------------------------- */
1178 /**
1179  * Edit one file.
1180  *
1181  * @param file_vpath file object
1182  * @param line       line number
1183  * @return TRUE if no errors was occurred, FALSE otherwise
1184  */
1185
1186 gboolean
1187 edit_file (const vfs_path_t * file_vpath, long line)
1188 {
1189     mcedit_arg_t arg = { (vfs_path_t *) file_vpath, line };
1190     GList *files;
1191     gboolean ok;
1192
1193     files = g_list_prepend (NULL, &arg);
1194     ok = edit_files (files);
1195     g_list_free (files);
1196
1197     return ok;
1198 }
1199
1200 /* --------------------------------------------------------------------------------------------- */
1201
1202 gboolean
1203 edit_files (const GList * files)
1204 {
1205     static gboolean made_directory = FALSE;
1206     WDialog *edit_dlg;
1207     WMenuBar *menubar;
1208     const GList *file;
1209     gboolean ok = FALSE;
1210
1211     if (!made_directory)
1212     {
1213         char *dir;
1214
1215         dir = mc_build_filename (mc_config_get_cache_path (), EDIT_DIR, (char *) NULL);
1216         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1217         g_free (dir);
1218
1219         dir = mc_build_filename (mc_config_get_path (), EDIT_DIR, (char *) NULL);
1220         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1221         g_free (dir);
1222
1223         dir = mc_build_filename (mc_config_get_data_path (), EDIT_DIR, (char *) NULL);
1224         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1225         g_free (dir);
1226     }
1227
1228     /* Create a new dialog and add it widgets to it */
1229     edit_dlg =
1230         dlg_create (FALSE, 0, 0, 1, 1, WPOS_FULLSCREEN, FALSE, NULL, edit_dialog_callback,
1231                     edit_dialog_mouse_callback, "[Internal File Editor]", NULL);
1232     widget_want_tab (WIDGET (edit_dlg), TRUE);
1233
1234     edit_dlg->get_shortcut = edit_get_shortcut;
1235     edit_dlg->get_title = edit_get_title;
1236
1237     menubar = menubar_new (0, 0, COLS, NULL, TRUE);
1238     add_widget (edit_dlg, menubar);
1239     edit_init_menu (menubar);
1240
1241     add_widget (edit_dlg, buttonbar_new (TRUE));
1242
1243     for (file = files; file != NULL; file = g_list_next (file))
1244     {
1245         Widget *w = WIDGET (edit_dlg);
1246         mcedit_arg_t *f = (mcedit_arg_t *) file->data;
1247         gboolean f_ok;
1248
1249         f_ok = edit_add_window (edit_dlg, w->y + 1, w->x, w->lines - 2, w->cols, f->file_vpath,
1250                                 f->line_number);
1251         /* at least one file has been opened succefully */
1252         ok = ok || f_ok;
1253     }
1254
1255     if (ok)
1256         dlg_run (edit_dlg);
1257
1258     if (!ok || widget_get_state (WIDGET (edit_dlg), WST_CLOSED))
1259         dlg_destroy (edit_dlg);
1260
1261     return ok;
1262 }
1263
1264 /* --------------------------------------------------------------------------------------------- */
1265
1266 const char *
1267 edit_get_file_name (const WEdit * edit)
1268 {
1269     return vfs_path_as_str (edit->filename_vpath);
1270 }
1271
1272 /* --------------------------------------------------------------------------------------------- */
1273
1274 WEdit *
1275 find_editor (const WDialog * h)
1276 {
1277     if (edit_widget_is_editor (CONST_WIDGET (h->current->data)))
1278         return (WEdit *) h->current->data;
1279     return (WEdit *) find_widget_type (h, edit_callback);
1280 }
1281
1282 /* --------------------------------------------------------------------------------------------- */
1283 /**
1284  * Check if widget is an WEdit class.
1285  *
1286  * @param w probably editor object
1287  * @return TRUE if widget is an WEdit class, FALSE otherwise
1288  */
1289
1290 gboolean
1291 edit_widget_is_editor (const Widget * w)
1292 {
1293     return (w != NULL && w->callback == edit_callback);
1294 }
1295
1296 /* --------------------------------------------------------------------------------------------- */
1297
1298 void
1299 edit_update_screen (WEdit * e)
1300 {
1301     WDialog *h = WIDGET (e)->owner;
1302
1303     edit_scroll_screen_over_cursor (e);
1304     edit_update_curs_col (e);
1305     edit_status (e, widget_get_state (WIDGET (e), WST_FOCUSED));
1306
1307     /* pop all events for this window for internal handling */
1308     if (!is_idle ())
1309         e->force |= REDRAW_PAGE;
1310     else
1311     {
1312         if ((e->force & REDRAW_COMPLETELY) != 0)
1313             e->force |= REDRAW_PAGE;
1314         edit_render_keypress (e);
1315     }
1316
1317     widget_redraw (WIDGET (find_buttonbar (h)));
1318 }
1319
1320 /* --------------------------------------------------------------------------------------------- */
1321 /**
1322  * Save current window size.
1323  *
1324  * @param edit editor object
1325  */
1326
1327 void
1328 edit_save_size (WEdit * edit)
1329 {
1330     Widget *w = WIDGET (edit);
1331
1332     edit->y_prev = w->y;
1333     edit->x_prev = w->x;
1334     edit->lines_prev = w->lines;
1335     edit->cols_prev = w->cols;
1336 }
1337
1338 /* --------------------------------------------------------------------------------------------- */
1339 /**
1340  * Create new editor window and insert it into editor screen.
1341  *
1342  * @param h     editor dialog (screen)
1343  * @param y     y coordinate
1344  * @param x     x coordinate
1345  * @param lines window height
1346  * @param cols  window width
1347  * @param f     file object
1348  * @param fline line number in file
1349  * @return TRUE if new window was successfully created and inserted into editor screen,
1350  *         FALSE otherwise
1351  */
1352
1353 gboolean
1354 edit_add_window (WDialog * h, int y, int x, int lines, int cols, const vfs_path_t * f, long fline)
1355 {
1356     WEdit *edit;
1357     Widget *w;
1358
1359     edit = edit_init (NULL, y, x, lines, cols, f, fline);
1360     if (edit == NULL)
1361         return FALSE;
1362
1363     w = WIDGET (edit);
1364     w->callback = edit_callback;
1365     w->mouse_callback = edit_mouse_callback;
1366
1367     add_widget (h, w);
1368     edit_set_buttonbar (edit, find_buttonbar (h));
1369     dlg_redraw (h);
1370
1371     return TRUE;
1372 }
1373
1374 /* --------------------------------------------------------------------------------------------- */
1375 /**
1376  * Handle move/resize events.
1377  *
1378  * @param edit    editor object
1379  * @param command action id
1380  * @return TRUE if the action was handled, FALSE otherwise
1381  */
1382
1383 gboolean
1384 edit_handle_move_resize (WEdit * edit, long command)
1385 {
1386     Widget *w = WIDGET (edit);
1387     gboolean ret = FALSE;
1388
1389     if (edit->fullscreen)
1390     {
1391         edit->drag_state = MCEDIT_DRAG_NONE;
1392         w->mouse.forced_capture = FALSE;
1393         return ret;
1394     }
1395
1396     switch (edit->drag_state)
1397     {
1398     case MCEDIT_DRAG_NONE:
1399         /* possible start move/resize */
1400         switch (command)
1401         {
1402         case CK_WindowMove:
1403             edit->drag_state = MCEDIT_DRAG_MOVE;
1404             edit_save_size (edit);
1405             edit_status (edit, TRUE);   /* redraw frame and status */
1406             /**
1407              * If a user initiates a move by the menu, not by the mouse, we
1408              * make a subsequent mouse drag pull the frame from its middle.
1409              * (We can instead choose '0' to pull it from the corner.)
1410              */
1411             edit->drag_state_start = w->cols / 2;
1412             ret = TRUE;
1413             break;
1414         case CK_WindowResize:
1415             edit->drag_state = MCEDIT_DRAG_RESIZE;
1416             edit_save_size (edit);
1417             edit_status (edit, TRUE);   /* redraw frame and status */
1418             ret = TRUE;
1419             break;
1420         default:
1421             break;
1422         }
1423         break;
1424
1425     case MCEDIT_DRAG_MOVE:
1426         switch (command)
1427         {
1428         case CK_WindowResize:
1429             edit->drag_state = MCEDIT_DRAG_RESIZE;
1430             ret = TRUE;
1431             break;
1432         case CK_Up:
1433         case CK_Down:
1434         case CK_Left:
1435         case CK_Right:
1436             edit_window_move (edit, command);
1437             ret = TRUE;
1438             break;
1439         case CK_Enter:
1440         case CK_WindowMove:
1441             edit->drag_state = MCEDIT_DRAG_NONE;
1442             edit_status (edit, TRUE);   /* redraw frame and status */
1443             MC_FALLTHROUGH;
1444         default:
1445             ret = TRUE;
1446             break;
1447         }
1448         break;
1449
1450     case MCEDIT_DRAG_RESIZE:
1451         switch (command)
1452         {
1453         case CK_WindowMove:
1454             edit->drag_state = MCEDIT_DRAG_MOVE;
1455             ret = TRUE;
1456             break;
1457         case CK_Up:
1458         case CK_Down:
1459         case CK_Left:
1460         case CK_Right:
1461             edit_window_resize (edit, command);
1462             ret = TRUE;
1463             break;
1464         case CK_Enter:
1465         case CK_WindowResize:
1466             edit->drag_state = MCEDIT_DRAG_NONE;
1467             edit_status (edit, TRUE);   /* redraw frame and status */
1468             MC_FALLTHROUGH;
1469         default:
1470             ret = TRUE;
1471             break;
1472         }
1473         break;
1474
1475     default:
1476         break;
1477     }
1478
1479     /**
1480      * - We let the user stop a resize/move operation by clicking with the
1481      *   mouse anywhere. ("clicking" = pressing and releasing a button.)
1482      * - We let the user perform a resize/move operation by a mouse drag
1483      *   initiated anywhere.
1484      *
1485      * "Anywhere" means: inside or outside the window. We make this happen
1486      * with the 'forced_capture' flag.
1487      */
1488     w->mouse.forced_capture = (edit->drag_state != MCEDIT_DRAG_NONE);
1489
1490     return ret;
1491 }
1492
1493 /* --------------------------------------------------------------------------------------------- */
1494 /**
1495  * Toggle window fuulscreen mode.
1496  *
1497  * @param edit editor object
1498  */
1499
1500 void
1501 edit_toggle_fullscreen (WEdit * edit)
1502 {
1503     edit->fullscreen = !edit->fullscreen;
1504     edit->force = REDRAW_COMPLETELY;
1505
1506     if (!edit->fullscreen)
1507         edit_restore_size (edit);
1508     else
1509     {
1510         Widget *w = WIDGET (edit);
1511         Widget *h = WIDGET (w->owner);
1512
1513         edit_save_size (edit);
1514         widget_set_size (w, h->y + 1, h->x, h->lines - 2, h->cols);
1515         edit->force |= REDRAW_PAGE;
1516         edit_update_screen (edit);
1517     }
1518 }
1519
1520 /* --------------------------------------------------------------------------------------------- */