2 Support of multiply editors and viewers.
4 Original idea and code: Oleg "Olegarch" Konovalov <olegarch@linuxinside.com>
6 Copyright (C) 2009-2016
7 Free Software Foundation, Inc.
10 Daniel Borca <dborca@yahoo.com>, 2007
11 Andrew Borodin <aborodin@vmail.ru>, 2010, 2013
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 WDialog
*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 DIALOG (data
)->state
= DLG_SUSPENDED
;
78 /* --------------------------------------------------------------------------------------------- */
81 dialog_switch_goto (GList
* dlg
)
83 if (mc_current
!= dlg
)
85 WDialog
*old
= DIALOG (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 (DIALOG (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 send_message (d
, NULL
, MSG_RESIZE
, 0, NULL
);
125 d
->winch_pending
= TRUE
;
128 /* --------------------------------------------------------------------------------------------- */
129 /*** public functions ****************************************************************************/
130 /* --------------------------------------------------------------------------------------------- */
133 dialog_switch_add (WDialog
* 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 (WDialog
* h
)
158 if (DIALOG (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
, DIALOG (top_dlg
->data
));
169 mc_current
= mc_dialogs
;
171 /* resume forced the current screen */
172 if (mc_current
!= NULL
)
173 DIALOG (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
= DIALOG (h
->data
);
245 if ((dlg
!= NULL
) && (dlg
->get_title
!= NULL
))
246 title
= dlg
->get_title (dlg
, WIDGET (listbox
->list
)->cols
- 2);
248 title
= g_strdup ("");
250 listbox_add_item (listbox
->list
, LISTBOX_APPEND_BEFORE
, get_hotkey (i
++), title
, NULL
,
256 listbox_select_entry (listbox
->list
, dlg_num
- 1 - g_list_position (mc_dialogs
, mc_current
));
257 rv
= run_listbox (listbox
);
261 h
= g_list_nth (mc_dialogs
, dlg_num
- 1 - rv
);
262 dialog_switch_goto (h
);
266 /* --------------------------------------------------------------------------------------------- */
269 dialog_switch_process_pending (void)
273 while (dialog_switch_pending
)
275 WDialog
*h
= DIALOG (mc_current
->data
);
277 dialog_switch_pending
= FALSE
;
278 h
->state
= DLG_SUSPENDED
;
280 if (h
->state
== DLG_CLOSED
)
284 /* return to panels */
285 if (mc_global
.mc_run_mode
== MC_RUN_FULL
)
287 mc_current
= g_list_find (mc_dialogs
, midnight_dlg
);
288 mc_event_raise (MCEVENT_GROUP_FILEMANAGER
, "update_panels", NULL
);
298 /* --------------------------------------------------------------------------------------------- */
301 dialog_switch_got_winch (void)
305 for (dlg
= mc_dialogs
; dlg
!= NULL
; dlg
= g_list_next (dlg
))
306 if (dlg
!= mc_current
)
307 DIALOG (dlg
->data
)->winch_pending
= TRUE
;
310 /* --------------------------------------------------------------------------------------------- */
313 dialog_switch_shutdown (void)
315 while (mc_dialogs
!= NULL
)
317 WDialog
*dlg
= DIALOG (mc_dialogs
->data
);
324 /* --------------------------------------------------------------------------------------------- */
329 tty_set_normal_attrs ();
330 tty_fill_region (0, 0, LINES
, COLS
, ' ');
334 /* --------------------------------------------------------------------------------------------- */
337 repaint_screen (void)
343 /* --------------------------------------------------------------------------------------------- */
348 #ifdef ENABLE_BACKGROUND
349 if (mc_global
.we_are_background
)
351 #endif /* ENABLE_BACKGROUND */
352 if (mc_global
.tty
.winch_flag
== 0)
356 /* if winch was caugth, we should do not only redraw screen, but
357 reposition/resize all */
358 dialog_change_screen_size ();
362 /* --------------------------------------------------------------------------------------------- */
365 dialog_change_screen_size (void)
367 mc_global
.tty
.winch_flag
= 0;
369 tty_change_screen_size ();
376 /* Inform all suspending dialogs */
377 dialog_switch_got_winch ();
378 /* Inform all running dialogs */
379 g_list_foreach (top_dlg
, (GFunc
) dlg_resize_cb
, NULL
);
381 /* Now, force the redraw */
385 /* --------------------------------------------------------------------------------------------- */