2 Support of multiply editors and viewers.
4 Original idea and code: Oleg "Olegarch" Konovalov <olegarch@linuxinside.com>
6 Copyright (c) 2009, 2010, 2011
7 The Free Software Foundation
10 Daniel Borca <dborca@yahoo.com>, 2007
11 Andrew Borodin <aborodin@vmail.ru>, 2010
13 This file is part of the Midnight Commander.
15 The Midnight Commander is free software: you can redistribute it
16 and/or modify it under the terms of the GNU General Public License as
17 published by the Free Software Foundation, either version 3 of the License,
18 or (at your option) any later version.
20 The Midnight Commander is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program. If not, see <http://www.gnu.org/licenses/>.
29 /** \file dialog-switch.c
30 * \brief Source: support of multiply editors and viewers.
35 #include "lib/global.h"
36 #include "lib/tty/tty.h" /* LINES, COLS */
37 #include "lib/tty/color.h" /* tty_set_normal_attrs() */
38 #include "lib/widget.h"
39 #include "lib/event.h"
41 /*** global variables ****************************************************************************/
43 Dlg_head
*midnight_dlg
= NULL
;
45 /*** file scope macro definitions ****************************************************************/
47 /*** file scope type declarations ****************************************************************/
49 /*** file scope variables ************************************************************************/
51 /* List of dialogs: filemanagers, editors, viewers */
52 static GList
*mc_dialogs
= NULL
;
53 /* Currently active dialog */
54 static GList
*mc_current
= NULL
;
55 /* Is there any dialogs that we have to run after returning to the manager from another dialog */
56 static gboolean dialog_switch_pending
= FALSE
;
58 /*** file scope functions ************************************************************************/
59 /* --------------------------------------------------------------------------------------------- */
64 return (n
<= 9) ? '0' + n
: 'a' + n
- 10;
67 /* --------------------------------------------------------------------------------------------- */
70 dialog_switch_suspend (void *data
, void *user_data
)
74 if (data
!= mc_current
->data
)
75 ((Dlg_head
*) data
)->state
= DLG_SUSPENDED
;
78 /* --------------------------------------------------------------------------------------------- */
81 dialog_switch_goto (GList
* dlg
)
83 if (mc_current
!= dlg
)
85 Dlg_head
*old
= (Dlg_head
*) mc_current
->data
;
89 if (old
== midnight_dlg
)
91 /* switch from panels to another dialog (editor, viewer, etc) */
92 dialog_switch_pending
= TRUE
;
93 dialog_switch_process_pending ();
97 /* switch from editor, viewer, etc to another dialog */
98 old
->state
= DLG_SUSPENDED
;
100 if ((Dlg_head
*) dlg
->data
!= midnight_dlg
)
101 /* switch to another editor, viewer, etc */
102 /* return to panels before run the required dialog */
103 dialog_switch_pending
= TRUE
;
106 /* switch to panels */
107 midnight_dlg
->state
= DLG_ACTIVE
;
114 /* --------------------------------------------------------------------------------------------- */
117 dlg_resize_cb (void *data
, void *user_data
)
122 if (d
->state
== DLG_ACTIVE
)
123 d
->callback (d
, NULL
, DLG_RESIZE
, 0, NULL
);
125 d
->winch_pending
= TRUE
;
128 /* --------------------------------------------------------------------------------------------- */
129 /*** public functions ****************************************************************************/
130 /* --------------------------------------------------------------------------------------------- */
133 dialog_switch_add (Dlg_head
* h
)
137 dlg
= g_list_find (mc_dialogs
, h
);
143 mc_dialogs
= g_list_prepend (mc_dialogs
, h
);
144 mc_current
= mc_dialogs
;
147 /* suspend forced all other screens */
148 g_list_foreach (mc_dialogs
, dialog_switch_suspend
, NULL
);
151 /* --------------------------------------------------------------------------------------------- */
154 dialog_switch_remove (Dlg_head
* h
)
158 if ((Dlg_head
*) mc_current
->data
== h
)
161 this = g_list_find (mc_dialogs
, h
);
163 mc_dialogs
= g_list_delete_link (mc_dialogs
, this);
165 /* adjust current dialog */
167 mc_current
= g_list_find (mc_dialogs
, (Dlg_head
*) top_dlg
->data
);
169 mc_current
= mc_dialogs
;
171 /* resume forced the current screen */
172 if (mc_current
!= NULL
)
173 ((Dlg_head
*) mc_current
->data
)->state
= DLG_ACTIVE
;
176 /* --------------------------------------------------------------------------------------------- */
179 dialog_switch_num (void)
181 return g_list_length (mc_dialogs
);
184 /* --------------------------------------------------------------------------------------------- */
187 dialog_switch_next (void)
191 if (mc_global
.midnight_shutdown
|| mc_current
== NULL
)
194 next
= g_list_next (mc_current
);
198 dialog_switch_goto (next
);
201 /* --------------------------------------------------------------------------------------------- */
204 dialog_switch_prev (void)
208 if (mc_global
.midnight_shutdown
|| mc_current
== NULL
)
211 prev
= g_list_previous (mc_current
);
213 prev
= g_list_last (mc_dialogs
);
215 dialog_switch_goto (prev
);
218 /* --------------------------------------------------------------------------------------------- */
221 dialog_switch_list (void)
223 const size_t dlg_num
= g_list_length (mc_dialogs
);
230 if (mc_global
.midnight_shutdown
|| mc_current
== NULL
)
233 lines
= min ((size_t) (LINES
* 2 / 3), dlg_num
);
236 listbox
= create_listbox_window (lines
, cols
, _("Screens"), "[Screen selector]");
238 for (h
= mc_dialogs
; h
!= NULL
; h
= g_list_next (h
))
243 dlg
= (Dlg_head
*) h
->data
;
245 if ((dlg
!= NULL
) && (dlg
->get_title
!= NULL
))
246 title
= dlg
->get_title (dlg
, listbox
->list
->widget
.cols
- 2); /* FIXME! */
248 title
= g_strdup ("");
250 listbox_add_item (listbox
->list
, LISTBOX_APPEND_BEFORE
, get_hotkey (i
++), title
, NULL
);
255 listbox_select_entry (listbox
->list
, dlg_num
- 1 - g_list_position (mc_dialogs
, mc_current
));
256 rv
= run_listbox (listbox
);
260 h
= g_list_nth (mc_dialogs
, dlg_num
- 1 - rv
);
261 dialog_switch_goto (h
);
265 /* --------------------------------------------------------------------------------------------- */
268 dialog_switch_process_pending (void)
272 while (dialog_switch_pending
)
274 Dlg_head
*h
= (Dlg_head
*) mc_current
->data
;
276 dialog_switch_pending
= FALSE
;
277 h
->state
= DLG_SUSPENDED
;
279 if (h
->state
== DLG_CLOSED
)
283 /* return to panels */
284 if (mc_global
.mc_run_mode
== MC_RUN_FULL
)
286 mc_current
= g_list_find (mc_dialogs
, midnight_dlg
);
287 mc_event_raise (MCEVENT_GROUP_FILEMANAGER
, "update_panels", NULL
);
297 /* --------------------------------------------------------------------------------------------- */
300 dialog_switch_got_winch (void)
304 for (dlg
= mc_dialogs
; dlg
!= NULL
; dlg
= g_list_next (dlg
))
305 if (dlg
!= mc_current
)
306 ((Dlg_head
*) dlg
->data
)->winch_pending
= TRUE
;
309 /* --------------------------------------------------------------------------------------------- */
312 dialog_switch_shutdown (void)
314 while (mc_dialogs
!= NULL
)
316 Dlg_head
*dlg
= (Dlg_head
*) mc_dialogs
->data
;
323 /* --------------------------------------------------------------------------------------------- */
328 tty_set_normal_attrs ();
329 tty_fill_region (0, 0, LINES
, COLS
, ' ');
333 /* --------------------------------------------------------------------------------------------- */
336 repaint_screen (void)
342 /* --------------------------------------------------------------------------------------------- */
347 #ifdef ENABLE_BACKGROUND
348 if (mc_global
.we_are_background
)
350 #endif /* ENABLE_BACKGROUND */
351 if (!mc_global
.tty
.winch_flag
)
355 /* if winch was caugth, we should do not only redraw screen, but
356 reposition/resize all */
357 dialog_change_screen_size ();
361 /* --------------------------------------------------------------------------------------------- */
364 dialog_change_screen_size (void)
366 mc_global
.tty
.winch_flag
= FALSE
;
368 tty_change_screen_size ();
370 #ifdef HAVE_SUBSHELL_SUPPORT
371 if (mc_global
.tty
.use_subshell
)
372 tty_resize (mc_global
.tty
.subshell_pty
);
375 /* Inform all suspending dialogs */
376 dialog_switch_got_winch ();
377 /* Inform all running dialogs */
378 g_list_foreach (top_dlg
, (GFunc
) dlg_resize_cb
, NULL
);
380 /* Now, force the redraw */
384 /* --------------------------------------------------------------------------------------------- */