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|
/*
Editor initialisation and callback handler.
Copyright (C) 1996-2023
Free Software Foundation, Inc.
Written by:
Paul Sheer, 1996, 1997
Andrew Borodin <aborodin@vmail.ru> 2012-2022
This file is part of the Midnight Commander.
The Midnight Commander is free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
The Midnight Commander is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* \brief Source: editor initialisation and callback handler
* \author Paul Sheer
* \date 1996, 1997
*/
#include <config.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "lib/global.h"
#include "lib/tty/tty.h" /* LINES, COLS */
#include "lib/tty/key.h" /* is_idle() */
#include "lib/tty/color.h" /* tty_setcolor() */
#include "lib/skin.h"
#include "lib/fileloc.h" /* EDIT_HOME_DIR */
#include "lib/strutil.h" /* str_term_trim() */
#include "lib/util.h" /* mc_build_filename() */
#include "lib/widget.h"
#include "lib/mcconfig.h"
#include "lib/event.h" /* mc_event_raise() */
#ifdef HAVE_CHARSET
#include "lib/charsets.h"
#endif
#include "src/keymap.h" /* keybind_lookup_keymap_command() */
#include "src/setup.h" /* home_dir */
#include "src/execute.h" /* toggle_subshell() */
#include "src/filemanager/cmd.h" /* save_setup_cmd() */
#include "src/learn.h" /* learn_keys() */
#include "src/args.h" /* mcedit_arg_t */
#include "edit-impl.h"
#include "editwidget.h"
#include "editmacros.h" /* edit_execute_macro() */
#ifdef HAVE_ASPELL
#include "spell.h"
#endif
/*** global variables ****************************************************************************/
char *edit_window_state_char = NULL;
char *edit_window_close_char = NULL;
/*** file scope macro definitions ****************************************************************/
#define WINDOW_MIN_LINES (2 + 2)
#define WINDOW_MIN_COLS (2 + LINE_STATE_WIDTH + 2)
/*** file scope type declarations ****************************************************************/
/*** forward declarations (file scope functions) *************************************************/
/*** file scope variables ************************************************************************/
static unsigned int edit_dlg_init_refcounter = 0;
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/**
* Init the 'edit' subsystem
*/
static void
edit_dlg_init (void)
{
edit_dlg_init_refcounter++;
if (edit_dlg_init_refcounter == 1)
{
edit_window_state_char = mc_skin_get ("widget-editor", "window-state-char", "*");
edit_window_close_char = mc_skin_get ("widget-editor", "window-close-char", "X");
#ifdef HAVE_ASPELL
aspell_init ();
#endif
}
}
/* --------------------------------------------------------------------------------------------- */
/**
* Deinit the 'edit' subsystem
*/
static void
edit_dlg_deinit (void)
{
if (edit_dlg_init_refcounter == 1)
{
g_free (edit_window_state_char);
g_free (edit_window_close_char);
#ifdef HAVE_ASPELL
aspell_clean ();
#endif
}
if (edit_dlg_init_refcounter != 0)
edit_dlg_init_refcounter--;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Show info about editor
*/
static void
edit_about (void)
{
char *ver;
ver = g_strdup_printf ("MCEdit %s", mc_global.mc_version);
{
quick_widget_t quick_widgets[] = {
/* *INDENT-OFF* */
QUICK_LABEL (ver, NULL),
QUICK_SEPARATOR (TRUE),
QUICK_LABEL (N_("A user friendly text editor\n"
"written for the Midnight Commander."), NULL),
QUICK_SEPARATOR (FALSE),
QUICK_LABEL (N_("Copyright (C) 1996-2023 the Free Software Foundation"), NULL),
QUICK_START_BUTTONS (TRUE, TRUE),
QUICK_BUTTON (N_("&OK"), B_ENTER, NULL, NULL),
QUICK_END
/* *INDENT-ON* */
};
WRect r = { -1, -1, 0, 40 };
quick_dialog_t qdlg = {
r, N_("About"), "[Internal File Editor]",
quick_widgets, NULL, NULL
};
quick_widgets[0].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
quick_widgets[2].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
quick_widgets[4].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
(void) quick_dialog (&qdlg);
}
g_free (ver);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Show a help window
*/
static void
edit_help (void)
{
ev_help_t event_data = { NULL, "[Internal File Editor]" };
mc_event_raise (MCEVENT_GROUP_CORE, "help", &event_data);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Restore saved window size.
*
* @param edit editor object
*/
static void
edit_restore_size (WEdit * edit)
{
Widget *w = WIDGET (edit);
edit->drag_state = MCEDIT_DRAG_NONE;
w->mouse.forced_capture = FALSE;
widget_set_size_rect (w, &edit->loc_prev);
widget_draw (WIDGET (w->owner));
}
/* --------------------------------------------------------------------------------------------- */
/**
* Move window by one row or column in any direction.
*
* @param edit editor object
* @param command direction (CK_Up, CK_Down, CK_Left, CK_Right)
*/
static void
edit_window_move (WEdit * edit, long command)
{
Widget *we = WIDGET (edit);
Widget *wo = WIDGET (we->owner);
WRect *w = &we->rect;
const WRect *wh = &wo->rect;
switch (command)
{
case CK_Up:
if (w->y > wh->y + 1) /* menubar */
w->y--;
break;
case CK_Down:
if (w->y < wh->y + wh->lines - 2) /* buttonbar */
w->y++;
break;
case CK_Left:
if (w->x + wh->cols > wh->x)
w->x--;
break;
case CK_Right:
if (w->x < wh->x + wh->cols)
w->x++;
break;
default:
return;
}
edit->force |= REDRAW_PAGE;
widget_draw (wo);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Resize window by one row or column in any direction.
*
* @param edit editor object
* @param command direction (CK_Up, CK_Down, CK_Left, CK_Right)
*/
static void
edit_window_resize (WEdit * edit, long command)
{
Widget *we = WIDGET (edit);
Widget *wo = WIDGET (we->owner);
WRect *w = &we->rect;
const WRect *wh = &wo->rect;
switch (command)
{
case CK_Up:
if (w->lines > WINDOW_MIN_LINES)
w->lines--;
break;
case CK_Down:
if (w->y + w->lines < wh->y + wh->lines - 1) /* buttonbar */
w->lines++;
break;
case CK_Left:
if (w->cols > WINDOW_MIN_COLS)
w->cols--;
break;
case CK_Right:
if (w->x + w->cols < wh->x + wh->cols)
w->cols++;
break;
default:
return;
}
edit->force |= REDRAW_COMPLETELY;
widget_draw (wo);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Get hotkey by number.
*
* @param n number
* @return hotkey
*/
static unsigned char
get_hotkey (int n)
{
return (n <= 9) ? '0' + n : 'a' + n - 10;
}
/* --------------------------------------------------------------------------------------------- */
static void
edit_window_list (const WDialog * h)
{
const WGroup *g = CONST_GROUP (h);
const size_t offset = 2; /* skip menu and buttonbar */
const size_t dlg_num = g_list_length (g->widgets) - offset;
int lines, cols;
Listbox *listbox;
GList *w;
WEdit *selected;
int i = 0;
lines = MIN ((size_t) (LINES * 2 / 3), dlg_num);
cols = COLS * 2 / 3;
listbox = listbox_window_new (lines, cols, _("Open files"), "[Open files]");
for (w = g->widgets; w != NULL; w = g_list_next (w))
if (edit_widget_is_editor (CONST_WIDGET (w->data)))
{
WEdit *e = EDIT (w->data);
char *fname;
if (e->filename_vpath == NULL)
fname = g_strdup_printf ("%c [%s]", e->modified ? '*' : ' ', _("NoName"));
else
fname =
g_strdup_printf ("%c%s", e->modified ? '*' : ' ',
vfs_path_as_str (e->filename_vpath));
listbox_add_item (listbox->list, LISTBOX_APPEND_AT_END, get_hotkey (i++),
str_term_trim (fname, WIDGET (listbox->list)->rect.cols - 2), e,
FALSE);
g_free (fname);
}
selected = listbox_run_with_data (listbox, g->current->data);
if (selected != NULL)
widget_select (WIDGET (selected));
}
/* --------------------------------------------------------------------------------------------- */
static char *
edit_get_shortcut (long command)
{
const char *ext_map;
const char *shortcut = NULL;
shortcut = keybind_lookup_keymap_shortcut (editor_map, command);
if (shortcut != NULL)
return g_strdup (shortcut);
ext_map = keybind_lookup_keymap_shortcut (editor_map, CK_ExtendedKeyMap);
if (ext_map != NULL)
shortcut = keybind_lookup_keymap_shortcut (editor_x_map, command);
if (shortcut != NULL)
return g_strdup_printf ("%s %s", ext_map, shortcut);
return NULL;
}
/* --------------------------------------------------------------------------------------------- */
static char *
edit_get_title (const WDialog * h, size_t len)
{
const WEdit *edit;
const char *modified;
const char *file_label;
char *filename;
edit = edit_find_editor (h);
modified = edit->modified ? "(*) " : " ";
len -= 4;
if (edit->filename_vpath == NULL)
filename = g_strdup (_("[NoName]"));
else
filename = g_strdup (vfs_path_as_str (edit->filename_vpath));
file_label = str_term_trim (filename, len - str_term_width1 (_("Edit: ")));
g_free (filename);
return g_strconcat (_("Edit: "), modified, file_label, (char *) NULL);
}
/* --------------------------------------------------------------------------------------------- */
static cb_ret_t
edit_dialog_command_execute (WDialog * h, long command)
{
WGroup *g = GROUP (h);
cb_ret_t ret = MSG_HANDLED;
switch (command)
{
case CK_EditNew:
edit_load_file_from_filename (h, NULL, 0);
break;
case CK_EditFile:
edit_load_cmd (h);
break;
case CK_History:
edit_load_file_from_history (h);
break;
case CK_EditSyntaxFile:
edit_load_syntax_file (h);
break;
case CK_EditUserMenu:
edit_load_menu_file (h);
break;
case CK_Close:
/* if there are no opened files anymore, close MC editor */
if (edit_widget_is_editor (CONST_WIDGET (g->current->data)) &&
edit_close_cmd (EDIT (g->current->data)) && edit_find_editor (h) == NULL)
dlg_close (h);
break;
case CK_Help:
edit_help ();
/* edit->force |= REDRAW_COMPLETELY; */
break;
case CK_Menu:
edit_menu_cmd (h);
break;
case CK_Quit:
case CK_Cancel:
/* don't close editor due to SIGINT, but stop move/resize window */
{
Widget *w = WIDGET (g->current->data);
if (edit_widget_is_editor (w) && EDIT (w)->drag_state != MCEDIT_DRAG_NONE)
edit_restore_size (EDIT (w));
else if (command == CK_Quit)
dlg_close (h);
}
break;
case CK_About:
edit_about ();
break;
case CK_SyntaxOnOff:
edit_syntax_onoff_cmd (h);
break;
case CK_ShowTabTws:
edit_show_tabs_tws_cmd (h);
break;
case CK_ShowMargin:
edit_show_margin_cmd (h);
break;
case CK_ShowNumbers:
edit_show_numbers_cmd (h);
break;
case CK_Refresh:
edit_refresh_cmd ();
break;
case CK_Shell:
toggle_subshell ();
break;
case CK_LearnKeys:
learn_keys ();
break;
case CK_WindowMove:
case CK_WindowResize:
if (edit_widget_is_editor (CONST_WIDGET (g->current->data)))
edit_handle_move_resize (EDIT (g->current->data), command);
break;
case CK_WindowList:
edit_window_list (h);
break;
case CK_WindowNext:
group_select_next_widget (g);
break;
case CK_WindowPrev:
group_select_prev_widget (g);
break;
case CK_Options:
edit_options_dialog (h);
break;
case CK_OptionsSaveMode:
edit_save_mode_cmd ();
break;
case CK_SaveSetup:
save_setup_cmd ();
break;
default:
ret = MSG_NOT_HANDLED;
break;
}
return ret;
}
/* --------------------------------------------------------------------------------------------- */
/*
* Translate the keycode into either 'command' or 'char_for_insertion'.
* 'command' is one of the editor commands from lib/keybind.h.
*/
static gboolean
edit_translate_key (WEdit * edit, long x_key, int *cmd, int *ch)
{
Widget *w = WIDGET (edit);
long command = CK_InsertChar;
int char_for_insertion = -1;
/* an ordinary insertable character */
if (!w->ext_mode && x_key < 256)
{
#ifndef HAVE_CHARSET
if (is_printable (x_key))
{
char_for_insertion = x_key;
goto fin;
}
#else
int c;
if (edit->charpoint >= MB_LEN_MAX)
{
edit->charpoint = 0;
edit->charbuf[edit->charpoint] = '\0';
}
if (edit->charpoint < MB_LEN_MAX)
{
edit->charbuf[edit->charpoint++] = x_key;
edit->charbuf[edit->charpoint] = '\0';
}
/* input from 8-bit locale */
if (!mc_global.utf8_display)
{
/* source is in 8-bit codeset */
c = convert_from_input_c (x_key);
if (is_printable (c))
{
if (!edit->utf8)
char_for_insertion = c;
else
char_for_insertion = convert_from_8bit_to_utf_c2 ((char) x_key);
goto fin;
}
}
else
{
/* UTF-8 locale */
int res;
res = str_is_valid_char (edit->charbuf, edit->charpoint);
if (res < 0 && res != -2)
{
edit->charpoint = 0; /* broken multibyte char, skip */
goto fin;
}
if (edit->utf8)
{
/* source is in UTF-8 codeset */
if (res < 0)
{
char_for_insertion = x_key;
goto fin;
}
edit->charbuf[edit->charpoint] = '\0';
edit->charpoint = 0;
if (g_unichar_isprint (g_utf8_get_char (edit->charbuf)))
{
char_for_insertion = x_key;
goto fin;
}
}
else
{
/* 8-bit source */
if (res < 0)
{
/* not finished multibyte input (we're in the middle of multibyte utf-8 char) */
goto fin;
}
if (g_unichar_isprint (g_utf8_get_char (edit->charbuf)))
{
c = convert_from_utf_to_current (edit->charbuf);
edit->charbuf[0] = '\0';
edit->charpoint = 0;
char_for_insertion = c;
goto fin;
}
/* non-printable utf-8 input, skip it */
edit->charbuf[0] = '\0';
edit->charpoint = 0;
}
}
#endif /* HAVE_CHARSET */
}
/* Commands specific to the key emulation */
command = widget_lookup_key (w, x_key);
if (command == CK_IgnoreKey)
command = CK_InsertChar;
fin:
*cmd = (int) command; /* FIXME */
*ch = char_for_insertion;
return !(command == CK_InsertChar && char_for_insertion == -1);
}
/* --------------------------------------------------------------------------------------------- */
static inline void
edit_quit (WDialog * h)
{
GList *l;
WEdit *e = NULL;
GSList *m = NULL;
GSList *me;
/* don't stop the dialog before final decision */
widget_set_state (WIDGET (h), WST_ACTIVE, TRUE);
/* check window state and get modified files */
for (l = GROUP (h)->widgets; l != NULL; l = g_list_next (l))
if (edit_widget_is_editor (CONST_WIDGET (l->data)))
{
e = EDIT (l->data);
if (e->drag_state != MCEDIT_DRAG_NONE)
{
edit_restore_size (e);
g_slist_free (m);
return;
}
/* create separate list because widget_select()
changes the window position in Z order */
if (e->modified)
m = g_slist_prepend (m, l->data);
}
for (me = m; me != NULL; me = g_slist_next (me))
{
e = EDIT (me->data);
widget_select (WIDGET (e));
if (!edit_ok_to_exit (e))
break;
}
/* if all files were checked, quit editor */
if (me == NULL)
dlg_close (h);
g_slist_free (m);
}
/* --------------------------------------------------------------------------------------------- */
static inline void
edit_set_buttonbar (WEdit * edit, WButtonBar * bb)
{
Widget *w = WIDGET (edit);
buttonbar_set_label (bb, 1, Q_ ("ButtonBar|Help"), w->keymap, NULL);
buttonbar_set_label (bb, 2, Q_ ("ButtonBar|Save"), w->keymap, w);
buttonbar_set_label (bb, 3, Q_ ("ButtonBar|Mark"), w->keymap, w);
buttonbar_set_label (bb, 4, Q_ ("ButtonBar|Replac"), w->keymap, w);
buttonbar_set_label (bb, 5, Q_ ("ButtonBar|Copy"), w->keymap, w);
buttonbar_set_label (bb, 6, Q_ ("ButtonBar|Move"), w->keymap, w);
buttonbar_set_label (bb, 7, Q_ ("ButtonBar|Search"), w->keymap, w);
buttonbar_set_label (bb, 8, Q_ ("ButtonBar|Delete"), w->keymap, w);
buttonbar_set_label (bb, 9, Q_ ("ButtonBar|PullDn"), w->keymap, NULL);
buttonbar_set_label (bb, 10, Q_ ("ButtonBar|Quit"), w->keymap, NULL);
}
/* --------------------------------------------------------------------------------------------- */
static void
edit_total_update (WEdit * edit)
{
edit_find_bracket (edit);
edit->force |= REDRAW_COMPLETELY;
edit_update_curs_row (edit);
edit_update_screen (edit);
}
/* --------------------------------------------------------------------------------------------- */
static gboolean
edit_update_cursor (WEdit * edit, const mouse_event_t * event)
{
int x, y;
gboolean done;
x = event->x - (edit->fullscreen ? 0 : 1);
y = event->y - (edit->fullscreen ? 0 : 1);
if (edit->mark2 != -1 && event->msg == MSG_MOUSE_UP)
return TRUE; /* don't do anything */
if (event->msg == MSG_MOUSE_DOWN || event->msg == MSG_MOUSE_UP)
edit_push_key_press (edit);
if (!edit_options.cursor_beyond_eol)
edit->prev_col = x - edit->start_col - edit_options.line_state_width;
else
{
long line_len;
line_len =
edit_move_forward3 (edit, edit_buffer_get_current_bol (&edit->buffer), 0,
edit_buffer_get_current_eol (&edit->buffer));
if (x > line_len - 1)
{
edit->over_col = x - line_len - edit->start_col - edit_options.line_state_width;
edit->prev_col = line_len;
}
else
{
edit->over_col = 0;
edit->prev_col = x - edit_options.line_state_width - edit->start_col;
}
}
if (y > edit->curs_row)
edit_move_down (edit, y - edit->curs_row, FALSE);
else if (y < edit->curs_row)
edit_move_up (edit, edit->curs_row - y, FALSE);
else
edit_move_to_prev_col (edit, edit_buffer_get_current_bol (&edit->buffer));
if (event->msg == MSG_MOUSE_CLICK)
{
edit_mark_cmd (edit, TRUE); /* reset */
edit->highlight = 0;
}
done = (event->msg != MSG_MOUSE_DRAG);
if (done)
edit_mark_cmd (edit, FALSE);
return done;
}
/* --------------------------------------------------------------------------------------------- */
/** Callback for the edit dialog */
static cb_ret_t
edit_dialog_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
{
WGroup *g = GROUP (w);
WDialog *h = DIALOG (w);
switch (msg)
{
case MSG_INIT:
edit_dlg_init ();
return MSG_HANDLED;
case MSG_RESIZE:
dlg_default_callback (w, NULL, MSG_RESIZE, 0, NULL);
menubar_arrange (menubar_find (h));
return MSG_HANDLED;
case MSG_ACTION:
{
/* Handle shortcuts, menu, and buttonbar. */
cb_ret_t result;
result = edit_dialog_command_execute (h, parm);
/* We forward any commands coming from the menu, and which haven't been
handled by the dialog, to the focused WEdit window. */
if (result == MSG_NOT_HANDLED && sender == WIDGET (menubar_find (h)))
result = send_message (g->current->data, NULL, MSG_ACTION, parm, NULL);
return result;
}
case MSG_KEY:
{
Widget *we = WIDGET (g->current->data);
cb_ret_t ret = MSG_NOT_HANDLED;
if (edit_widget_is_editor (we))
{
gboolean ext_mode;
long command;
/* keep and then extmod flag */
ext_mode = we->ext_mode;
command = widget_lookup_key (we, parm);
we->ext_mode = ext_mode;
if (command == CK_IgnoreKey)
we->ext_mode = FALSE;
else
{
ret = edit_dialog_command_execute (h, command);
/* if command was not handled, keep the extended mode
for the further key processing */
if (ret == MSG_HANDLED)
we->ext_mode = FALSE;
}
}
/*
* Due to the "end of bracket" escape the editor sees input with is_idle() == false
* (expects more characters) and hence doesn't yet refresh the screen, but then
* no further characters arrive (there's only an "end of bracket" which is swallowed
* by tty_get_event()), so you end up with a screen that's not refreshed after pasting.
* So let's trigger an IDLE signal.
*/
if (!is_idle ())
widget_idle (w, TRUE);
return ret;
}
/* hardcoded menu hotkeys (see edit_drop_hotkey_menu) */
case MSG_UNHANDLED_KEY:
return edit_drop_hotkey_menu (h, parm) ? MSG_HANDLED : MSG_NOT_HANDLED;
case MSG_VALIDATE:
edit_quit (h);
return MSG_HANDLED;
case MSG_DESTROY:
edit_dlg_deinit ();
return MSG_HANDLED;
case MSG_IDLE:
widget_idle (w, FALSE);
return send_message (g->current->data, NULL, MSG_IDLE, 0, NULL);
default:
return dlg_default_callback (w, sender, msg, parm, data);
}
}
/* --------------------------------------------------------------------------------------------- */
/**
* Handle mouse events of editor screen.
*
* @param w Widget object (the editor)
* @param msg mouse event message
* @param event mouse event data
*/
static void
edit_dialog_mouse_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
{
gboolean unhandled = TRUE;
if (msg == MSG_MOUSE_DOWN && event->y == 0)
{
WGroup *g = GROUP (w);
WDialog *h = DIALOG (w);
WMenuBar *b;
b = menubar_find (h);
if (!widget_get_state (WIDGET (b), WST_FOCUSED))
{
/* menubar */
GList *l;
GList *top = NULL;
int x;
/* Try find top fullscreen window */
for (l = g->widgets; l != NULL; l = g_list_next (l))
if (edit_widget_is_editor (CONST_WIDGET (l->data)) && EDIT (l->data)->fullscreen)
top = l;
/* Handle fullscreen/close buttons in the top line */
x = w->rect.cols - 6;
if (top != NULL && event->x >= x)
{
WEdit *e = EDIT (top->data);
if (top != g->current)
{
/* Window is not active. Activate it */
widget_select (WIDGET (e));
}
/* Handle buttons */
if (event->x - x <= 2)
edit_toggle_fullscreen (e);
else
send_message (h, NULL, MSG_ACTION, CK_Close, NULL);
unhandled = FALSE;
}
if (unhandled)
menubar_activate (b, drop_menus, -1);
}
}
/* Continue handling of unhandled event in window or menu */
event->result.abort = unhandled;
}
/* --------------------------------------------------------------------------------------------- */
static cb_ret_t
edit_dialog_bg_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
{
switch (msg)
{
case MSG_INIT:
w->rect = WIDGET (w->owner)->rect;
rect_grow (&w->rect, -1, 0);
w->pos_flags |= WPOS_KEEP_ALL;
return MSG_HANDLED;
default:
return background_callback (w, sender, msg, parm, data);
}
}
/* --------------------------------------------------------------------------------------------- */
static cb_ret_t
edit_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
{
WEdit *e = EDIT (w);
switch (msg)
{
case MSG_FOCUS:
edit_set_buttonbar (e, buttonbar_find (DIALOG (w->owner)));
return MSG_HANDLED;
case MSG_DRAW:
e->force |= REDRAW_COMPLETELY;
edit_update_screen (e);
return MSG_HANDLED;
case MSG_KEY:
{
int cmd, ch;
cb_ret_t ret = MSG_NOT_HANDLED;
/* The user may override the access-keys for the menu bar. */
if (macro_index == -1 && edit_execute_macro (e, parm))
{
edit_update_screen (e);
ret = MSG_HANDLED;
}
else if (edit_translate_key (e, parm, &cmd, &ch))
{
edit_execute_key_command (e, cmd, ch);
edit_update_screen (e);
ret = MSG_HANDLED;
}
return ret;
}
case MSG_ACTION:
/* command from menubar or buttonbar */
edit_execute_key_command (e, parm, -1);
edit_update_screen (e);
return MSG_HANDLED;
case MSG_CURSOR:
{
int y, x;
y = (e->fullscreen ? 0 : 1) + EDIT_TEXT_VERTICAL_OFFSET + e->curs_row;
x = (e->fullscreen ? 0 : 1) + EDIT_TEXT_HORIZONTAL_OFFSET +
edit_options.line_state_width + e->curs_col + e->start_col + e->over_col;
widget_gotoyx (w, y, x);
return MSG_HANDLED;
}
case MSG_IDLE:
edit_update_screen (e);
return MSG_HANDLED;
case MSG_DESTROY:
edit_clean (e);
return MSG_HANDLED;
default:
return widget_default_callback (w, sender, msg, parm, data);
}
}
/* --------------------------------------------------------------------------------------------- */
/**
* Handle move/resize mouse events.
*/
static void
edit_mouse_handle_move_resize (Widget * w, mouse_msg_t msg, mouse_event_t * event)
{
WEdit *edit = EDIT (w);
WRect *r = &w->rect;
const WRect *h = &CONST_WIDGET (w->owner)->rect;
int global_x, global_y;
if (msg == MSG_MOUSE_UP)
{
/* Exit move/resize mode. */
edit_execute_cmd (edit, CK_Enter, -1);
edit_update_screen (edit); /* Paint the buttonbar over our possibly overlapping frame. */
return;
}
if (msg != MSG_MOUSE_DRAG)
/**
* We ignore any other events. Specifically, MSG_MOUSE_DOWN.
*
* When the move/resize is initiated by the menu, we let the user
* stop it by clicking with the mouse. Which is why we don't want
* a mouse down to affect the window.
*/
return;
/* Convert point to global coordinates for easier calculations. */
global_x = event->x + r->x;
global_y = event->y + r->y;
/* Clamp the point to the dialog's client area. */
global_y = CLAMP (global_y, h->y + 1, h->y + h->lines - 2); /* Status line, buttonbar */
global_x = CLAMP (global_x, h->x, h->x + h->cols - 1); /* Currently a no-op, as the dialog has no left/right margins. */
if (edit->drag_state == MCEDIT_DRAG_MOVE)
{
r->y = global_y;
r->x = global_x - edit->drag_state_start;
}
else if (edit->drag_state == MCEDIT_DRAG_RESIZE)
{
r->lines = MAX (WINDOW_MIN_LINES, global_y - r->y + 1);
r->cols = MAX (WINDOW_MIN_COLS, global_x - r->x + 1);
}
edit->force |= REDRAW_COMPLETELY; /* Not really needed as WEdit's MSG_DRAW already does this. */
/* We draw the whole dialog because dragging/resizing exposes area beneath. */
widget_draw (WIDGET (w->owner));
}
/* --------------------------------------------------------------------------------------------- */
/**
* Handle mouse events of editor window
*
* @param w Widget object (the editor window)
* @param msg mouse event message
* @param event mouse event data
*/
static void
edit_mouse_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
{
WEdit *edit = EDIT (w);
/* buttons' distance from right edge */
int dx = edit->fullscreen ? 0 : 2;
/* location of 'Close' and 'Toggle fullscreen' pictograms */
int close_x, toggle_fullscreen_x;
close_x = (w->rect.cols - 1) - dx - 1;
toggle_fullscreen_x = close_x - 3;
if (edit->drag_state != MCEDIT_DRAG_NONE)
{
/* window is being resized/moved */
edit_mouse_handle_move_resize (w, msg, event);
return;
}
/* If it's the last line on the screen, we abort the event to make the
* system channel it to the overlapping buttonbar instead. We have to do
* this because a WEdit has the WOP_TOP_SELECT flag, which makes it above
* the buttonbar in Z-order. */
if (msg == MSG_MOUSE_DOWN && (event->y + w->rect.y == LINES - 1))
{
event->result.abort = TRUE;
return;
}
switch (msg)
{
case MSG_MOUSE_DOWN:
widget_select (w);
edit_update_curs_row (edit);
edit_update_curs_col (edit);
if (!edit->fullscreen)
{
if (event->y == 0)
{
if (event->x >= close_x - 1 && event->x <= close_x + 1)
; /* do nothing (see MSG_MOUSE_CLICK) */
else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
; /* do nothing (see MSG_MOUSE_CLICK) */
else
{
/* start window move */
edit_execute_cmd (edit, CK_WindowMove, -1);
edit_update_screen (edit); /* Paint the buttonbar over our possibly overlapping frame. */
edit->drag_state_start = event->x;
}
break;
}
if (event->y == w->rect.lines - 1 && event->x == w->rect.cols - 1)
{
/* bottom-right corner -- start window resize */
edit_execute_cmd (edit, CK_WindowResize, -1);
break;
}
}
MC_FALLTHROUGH; /* to start/stop text selection */
case MSG_MOUSE_UP:
edit_update_cursor (edit, event);
edit_total_update (edit);
break;
case MSG_MOUSE_CLICK:
if (event->y == 0)
{
if (event->x >= close_x - 1 && event->x <= close_x + 1)
send_message (w->owner, NULL, MSG_ACTION, CK_Close, NULL);
else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
edit_toggle_fullscreen (edit);
else if (!edit->fullscreen && event->count == GPM_DOUBLE)
/* double click on top line (toggle fullscreen) */
edit_toggle_fullscreen (edit);
}
else if (event->count == GPM_DOUBLE)
{
/* double click */
edit_mark_current_word_cmd (edit);
edit_total_update (edit);
}
else if (event->count == GPM_TRIPLE)
{
/* triple click: works in GPM only, not in xterm */
edit_mark_current_line_cmd (edit);
edit_total_update (edit);
}
break;
case MSG_MOUSE_DRAG:
edit_update_cursor (edit, event);
edit_total_update (edit);
break;
case MSG_MOUSE_SCROLL_UP:
edit_move_up (edit, 2, TRUE);
edit_total_update (edit);
break;
case MSG_MOUSE_SCROLL_DOWN:
edit_move_down (edit, 2, TRUE);
edit_total_update (edit);
break;
default:
break;
}
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/**
* Edit one file.
*
* @param file_vpath file object
* @param line line number
* @return TRUE if no errors was occurred, FALSE otherwise
*/
gboolean
edit_file (const vfs_path_t * file_vpath, long line)
{
mcedit_arg_t arg = { (vfs_path_t *) file_vpath, line };
GList *files;
gboolean ok;
files = g_list_prepend (NULL, &arg);
ok = edit_files (files);
g_list_free (files);
return ok;
}
/* --------------------------------------------------------------------------------------------- */
gboolean
edit_files (const GList * files)
{
static gboolean made_directory = FALSE;
WDialog *edit_dlg;
WGroup *g;
WMenuBar *menubar;
Widget *w, *wd;
const GList *file;
gboolean ok = FALSE;
if (!made_directory)
{
char *dir;
dir = mc_build_filename (mc_config_get_cache_path (), EDIT_HOME_DIR, (char *) NULL);
made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
g_free (dir);
dir = mc_build_filename (mc_config_get_path (), EDIT_HOME_DIR, (char *) NULL);
made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
g_free (dir);
dir = mc_build_filename (mc_config_get_data_path (), EDIT_HOME_DIR, (char *) NULL);
made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
g_free (dir);
}
/* Create a new dialog and add it widgets to it */
edit_dlg =
dlg_create (FALSE, 0, 0, 1, 1, WPOS_FULLSCREEN, FALSE, NULL, edit_dialog_callback,
edit_dialog_mouse_callback, "[Internal File Editor]", NULL);
wd = WIDGET (edit_dlg);
widget_want_tab (wd, TRUE);
wd->keymap = editor_map;
wd->ext_keymap = editor_x_map;
edit_dlg->get_shortcut = edit_get_shortcut;
edit_dlg->get_title = edit_get_title;
g = GROUP (edit_dlg);
edit_dlg->bg =
WIDGET (background_new
(1, 0, wd->rect.lines - 2, wd->rect.cols, EDITOR_BACKGROUND, ' ',
edit_dialog_bg_callback));
group_add_widget (g, edit_dlg->bg);
menubar = menubar_new (NULL);
w = WIDGET (menubar);
group_add_widget_autopos (g, w, w->pos_flags, NULL);
edit_init_menu (menubar);
w = WIDGET (buttonbar_new ());
group_add_widget_autopos (g, w, w->pos_flags, NULL);
for (file = files; file != NULL; file = g_list_next (file))
{
mcedit_arg_t *f = (mcedit_arg_t *) file->data;
gboolean f_ok;
f_ok = edit_load_file_from_filename (edit_dlg, f->file_vpath, f->line_number);
/* at least one file has been opened succefully */
ok = ok || f_ok;
}
if (ok)
dlg_run (edit_dlg);
if (!ok || widget_get_state (wd, WST_CLOSED))
widget_destroy (wd);
return ok;
}
/* --------------------------------------------------------------------------------------------- */
const char *
edit_get_file_name (const WEdit * edit)
{
return vfs_path_as_str (edit->filename_vpath);
}
/* --------------------------------------------------------------------------------------------- */
WEdit *
edit_find_editor (const WDialog * h)
{
const WGroup *g = CONST_GROUP (h);
if (edit_widget_is_editor (CONST_WIDGET (g->current->data)))
return EDIT (g->current->data);
return EDIT (widget_find_by_type (CONST_WIDGET (h), edit_callback));
}
/* --------------------------------------------------------------------------------------------- */
/**
* Check if widget is an WEdit class.
*
* @param w probably editor object
* @return TRUE if widget is an WEdit class, FALSE otherwise
*/
gboolean
edit_widget_is_editor (const Widget * w)
{
return (w != NULL && w->callback == edit_callback);
}
/* --------------------------------------------------------------------------------------------- */
void
edit_update_screen (WEdit * e)
{
edit_scroll_screen_over_cursor (e);
edit_update_curs_col (e);
edit_status (e, widget_get_state (WIDGET (e), WST_FOCUSED));
/* pop all events for this window for internal handling */
if (!is_idle ())
e->force |= REDRAW_PAGE;
else
{
if ((e->force & REDRAW_COMPLETELY) != 0)
e->force |= REDRAW_PAGE;
edit_render_keypress (e);
}
widget_draw (WIDGET (buttonbar_find (DIALOG (WIDGET (e)->owner))));
}
/* --------------------------------------------------------------------------------------------- */
/**
* Save current window size.
*
* @param edit editor object
*/
void
edit_save_size (WEdit * edit)
{
edit->loc_prev = WIDGET (edit)->rect;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Create new editor window and insert it into editor screen.
*
* @param h editor dialog (screen)
* @param y y coordinate
* @param x x coordinate
* @param lines window height
* @param cols window width
* @param f file object
* @param fline line number in file
* @return TRUE if new window was successfully created and inserted into editor screen,
* FALSE otherwise
*/
gboolean
edit_add_window (WDialog * h, const WRect * r, const vfs_path_t * f, long fline)
{
WEdit *edit;
Widget *w;
edit = edit_init (NULL, r, f, fline);
if (edit == NULL)
return FALSE;
w = WIDGET (edit);
w->callback = edit_callback;
w->mouse_callback = edit_mouse_callback;
group_add_widget_autopos (GROUP (h), w, WPOS_KEEP_ALL, NULL);
edit_set_buttonbar (edit, buttonbar_find (h));
widget_draw (WIDGET (h));
return TRUE;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Handle move/resize events.
*
* @param edit editor object
* @param command action id
* @return TRUE if the action was handled, FALSE otherwise
*/
gboolean
edit_handle_move_resize (WEdit * edit, long command)
{
Widget *w = WIDGET (edit);
gboolean ret = FALSE;
if (edit->fullscreen)
{
edit->drag_state = MCEDIT_DRAG_NONE;
w->mouse.forced_capture = FALSE;
return ret;
}
switch (edit->drag_state)
{
case MCEDIT_DRAG_NONE:
/* possible start move/resize */
switch (command)
{
case CK_WindowMove:
edit->drag_state = MCEDIT_DRAG_MOVE;
edit_save_size (edit);
edit_status (edit, TRUE); /* redraw frame and status */
/**
* If a user initiates a move by the menu, not by the mouse, we
* make a subsequent mouse drag pull the frame from its middle.
* (We can instead choose '0' to pull it from the corner.)
*/
edit->drag_state_start = w->rect.cols / 2;
ret = TRUE;
break;
case CK_WindowResize:
edit->drag_state = MCEDIT_DRAG_RESIZE;
edit_save_size (edit);
edit_status (edit, TRUE); /* redraw frame and status */
ret = TRUE;
break;
default:
break;
}
break;
case MCEDIT_DRAG_MOVE:
switch (command)
{
case CK_WindowResize:
edit->drag_state = MCEDIT_DRAG_RESIZE;
ret = TRUE;
break;
case CK_Up:
case CK_Down:
case CK_Left:
case CK_Right:
edit_window_move (edit, command);
ret = TRUE;
break;
case CK_Enter:
case CK_WindowMove:
edit->drag_state = MCEDIT_DRAG_NONE;
edit_status (edit, TRUE); /* redraw frame and status */
MC_FALLTHROUGH;
default:
ret = TRUE;
break;
}
break;
case MCEDIT_DRAG_RESIZE:
switch (command)
{
case CK_WindowMove:
edit->drag_state = MCEDIT_DRAG_MOVE;
ret = TRUE;
break;
case CK_Up:
case CK_Down:
case CK_Left:
case CK_Right:
edit_window_resize (edit, command);
ret = TRUE;
break;
case CK_Enter:
case CK_WindowResize:
edit->drag_state = MCEDIT_DRAG_NONE;
edit_status (edit, TRUE); /* redraw frame and status */
MC_FALLTHROUGH;
default:
ret = TRUE;
break;
}
break;
default:
break;
}
/**
* - We let the user stop a resize/move operation by clicking with the
* mouse anywhere. ("clicking" = pressing and releasing a button.)
* - We let the user perform a resize/move operation by a mouse drag
* initiated anywhere.
*
* "Anywhere" means: inside or outside the window. We make this happen
* with the 'forced_capture' flag.
*/
w->mouse.forced_capture = (edit->drag_state != MCEDIT_DRAG_NONE);
return ret;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Toggle window fuulscreen mode.
*
* @param edit editor object
*/
void
edit_toggle_fullscreen (WEdit * edit)
{
Widget *w = WIDGET (edit);
edit->fullscreen = !edit->fullscreen;
edit->force = REDRAW_COMPLETELY;
if (!edit->fullscreen)
{
edit_restore_size (edit);
/* do not follow screen size on resize */
w->pos_flags = WPOS_KEEP_DEFAULT;
}
else
{
WRect r;
edit_save_size (edit);
r = WIDGET (w->owner)->rect;
rect_grow (&r, -1, 0);
widget_set_size_rect (w, &r);
/* follow screen size on resize */
w->pos_flags = WPOS_KEEP_ALL;
edit->force |= REDRAW_PAGE;
edit_update_screen (edit);
}
}
/* --------------------------------------------------------------------------------------------- */
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