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mc/lib/widget/dialog.c
Andrew Borodin e83409b6d7 Ticket #3766: add_widget_autopos() doesn't remove focus from the previously focused widget. 
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
2017-02-09 17:49:34 +02:00

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/*
Dialog box features module for the Midnight Commander
Copyright (C) 1994-2017
Free Software Foundation, Inc.
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 dialog.c
* \brief Source: dialog box features module
*/
#include <config.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "lib/global.h"
#include "lib/tty/tty.h"
#include "lib/skin.h"
#include "lib/tty/key.h"
#include "lib/strutil.h"
#include "lib/fileloc.h" /* MC_HISTORY_FILE */
#include "lib/event.h" /* mc_event_raise() */
#include "lib/widget.h"
#include "lib/widget/mouse.h"
/*** global variables ****************************************************************************/
/* Color styles for normal and error dialogs */
dlg_colors_t dialog_colors;
dlg_colors_t alarm_colors;
dlg_colors_t listbox_colors;
/* Primitive way to check if the the current dialog is our dialog */
/* This is needed by async routines like load_prompt */
GList *top_dlg = NULL;
/* A hook list for idle events */
hook_t *idle_hook = NULL;
/* If set then dialogs just clean the screen when refreshing, else */
/* they do a complete refresh, refreshing all the parts of the program */
gboolean fast_refresh = FALSE;
/* left click outside of dialog closes it */
gboolean mouse_close_dialog = FALSE;
const global_keymap_t *dialog_map = NULL;
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/* Control widget positions in dialog */
typedef struct
{
int shift_x;
int scale_x;
int shift_y;
int scale_y;
} widget_shift_scale_t;
/*** file scope variables ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
static GList *
dlg_get_next_or_prev_of (const GList * list, gboolean next)
{
GList *l = NULL;
if (list != NULL && list->data != NULL)
{
const WDialog *owner = CONST_WIDGET (list->data)->owner;
if (owner != NULL)
{
if (next)
{
l = g_list_next (list);
if (l == NULL)
l = owner->widgets;
}
else
{
l = g_list_previous (list);
if (l == NULL)
l = g_list_last (owner->widgets);
}
}
}
return l;
}
/* --------------------------------------------------------------------------------------------- */
static void
dlg_select_next_or_prev (WDialog * h, gboolean next)
{
if (h->widgets != NULL && h->current != NULL)
{
GList *l = h->current;
Widget *w;
do
{
l = dlg_get_next_or_prev_of (l, next);
w = WIDGET (l->data);
}
while ((widget_get_state (w, WST_DISABLED) || !widget_get_options (w, WOP_SELECTABLE))
&& l != h->current);
widget_select (l->data);
}
}
/* --------------------------------------------------------------------------------------------- */
/**
* broadcast a message to all the widgets in a dialog that have
* the options set to flags. If flags is zero, the message is sent
* to all widgets.
*/
static void
dlg_broadcast_msg_to (WDialog * h, widget_msg_t msg, gboolean reverse, widget_options_t flags)
{
GList *p, *first;
if (h->widgets == NULL)
return;
if (h->current == NULL)
h->current = h->widgets;
p = dlg_get_next_or_prev_of (h->current, !reverse);
first = p;
do
{
Widget *w = WIDGET (p->data);
p = dlg_get_next_or_prev_of (p, !reverse);
if ((flags == 0) || ((flags & w->options) != 0))
send_message (w, NULL, msg, 0, NULL);
}
while (first != p);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Read histories from the ${XDG_CACHE_HOME}/mc/history file
*/
static void
dlg_read_history (WDialog * h)
{
char *profile;
ev_history_load_save_t event_data;
if (num_history_items_recorded == 0) /* this is how to disable */
return;
profile = mc_config_get_full_path (MC_HISTORY_FILE);
event_data.cfg = mc_config_init (profile, TRUE);
event_data.receiver = NULL;
/* create all histories in dialog */
mc_event_raise (h->event_group, MCEVENT_HISTORY_LOAD, &event_data);
mc_config_deinit (event_data.cfg);
g_free (profile);
}
/* --------------------------------------------------------------------------------------------- */
static int
dlg_find_widget_callback (const void *a, const void *b)
{
const Widget *w = CONST_WIDGET (a);
const widget_cb_fn f = b;
return (w->callback == f) ? 0 : 1;
}
/* --------------------------------------------------------------------------------------------- */
static void
refresh_cmd (void)
{
#ifdef HAVE_SLANG
tty_touch_screen ();
mc_refresh ();
#else
/* Use this if the refreshes fail */
clr_scr ();
repaint_screen ();
#endif /* HAVE_SLANG */
}
/* --------------------------------------------------------------------------------------------- */
static cb_ret_t
dlg_execute_cmd (WDialog * h, long command)
{
cb_ret_t ret = MSG_HANDLED;
switch (command)
{
case CK_Ok:
h->ret_value = B_ENTER;
dlg_stop (h);
break;
case CK_Cancel:
h->ret_value = B_CANCEL;
dlg_stop (h);
break;
case CK_Up:
case CK_Left:
dlg_select_prev_widget (h);
break;
case CK_Down:
case CK_Right:
dlg_select_next_widget (h);
break;
case CK_Help:
{
ev_help_t event_data = { NULL, h->help_ctx };
mc_event_raise (MCEVENT_GROUP_CORE, "help", &event_data);
}
break;
case CK_Suspend:
mc_event_raise (MCEVENT_GROUP_CORE, "suspend", NULL);
refresh_cmd ();
break;
case CK_Refresh:
refresh_cmd ();
break;
case CK_ScreenList:
if (!widget_get_state (WIDGET (h), WST_MODAL))
dialog_switch_list ();
else
ret = MSG_NOT_HANDLED;
break;
case CK_ScreenNext:
if (!widget_get_state (WIDGET (h), WST_MODAL))
dialog_switch_next ();
else
ret = MSG_NOT_HANDLED;
break;
case CK_ScreenPrev:
if (!widget_get_state (WIDGET (h), WST_MODAL))
dialog_switch_prev ();
else
ret = MSG_NOT_HANDLED;
break;
default:
ret = MSG_NOT_HANDLED;
}
return ret;
}
/* --------------------------------------------------------------------------------------------- */
static cb_ret_t
dlg_handle_key (WDialog * h, int d_key)
{
long command;
command = keybind_lookup_keymap_command (dialog_map, d_key);
if (command == CK_IgnoreKey)
return MSG_NOT_HANDLED;
if (send_message (h, NULL, MSG_ACTION, command, NULL) == MSG_HANDLED
|| dlg_execute_cmd (h, command) == MSG_HANDLED)
return MSG_HANDLED;
return MSG_NOT_HANDLED;
}
/* --------------------------------------------------------------------------------------------- */
/**
* This is the low-level mouse handler.
* It receives a Gpm_Event event and translates it into a higher level protocol.
*/
static int
dlg_mouse_translator (Gpm_Event * event, Widget * w)
{
mouse_event_t me;
me = mouse_translate_event (w, event);
return mouse_process_event (w, &me);
}
/* --------------------------------------------------------------------------------------------- */
static int
dlg_mouse_event (WDialog * h, Gpm_Event * event)
{
Widget *wh = WIDGET (h);
GList *p;
/* close the dialog by mouse left click out of dialog area */
if (mouse_close_dialog && (wh->pos_flags & WPOS_FULLSCREEN) == 0
&& ((event->buttons & GPM_B_LEFT) != 0) && ((event->type & GPM_DOWN) != 0)
&& !mouse_global_in_widget (event, wh))
{
h->ret_value = B_CANCEL;
dlg_stop (h);
return MOU_NORMAL;
}
if (wh->mouse_callback != NULL)
{
int mou;
mou = dlg_mouse_translator (event, wh);
if (mou != MOU_UNHANDLED)
return mou;
}
/* send the event to widgets in reverse Z-order */
p = g_list_last (h->widgets);
do
{
Widget *w = WIDGET (p->data);
if (!widget_get_state (w, WST_DISABLED) && w->mouse_callback != NULL)
{
/* put global cursor position to the widget */
int ret;
ret = dlg_mouse_translator (event, w);
if (ret != MOU_UNHANDLED)
return ret;
}
p = g_list_previous (p);
}
while (p != NULL);
return MOU_UNHANDLED;
}
/* --------------------------------------------------------------------------------------------- */
static cb_ret_t
dlg_try_hotkey (WDialog * h, int d_key)
{
GList *hot_cur;
Widget *current;
cb_ret_t handled;
int c;
if (h->widgets == NULL)
return MSG_NOT_HANDLED;
if (h->current == NULL)
h->current = h->widgets;
/*
* Explanation: we don't send letter hotkeys to other widgets if
* the currently selected widget is an input line
*/
current = WIDGET (h->current->data);
if (widget_get_state (current, WST_DISABLED))
return MSG_NOT_HANDLED;
if (widget_get_options (current, WOP_IS_INPUT))
{
/* skip ascii control characters, anything else can valid character in
* some encoding */
if (d_key >= 32 && d_key < 256)
return MSG_NOT_HANDLED;
}
/* If it's an alt key, send the message */
c = d_key & ~ALT (0);
if (d_key & ALT (0) && g_ascii_isalpha (c))
d_key = g_ascii_tolower (c);
handled = MSG_NOT_HANDLED;
if (widget_get_options (current, WOP_WANT_HOTKEY))
handled = send_message (current, NULL, MSG_HOTKEY, d_key, NULL);
/* If not used, send hotkey to other widgets */
if (handled == MSG_HANDLED)
return MSG_HANDLED;
hot_cur = dlg_get_widget_next_of (h->current);
/* send it to all widgets */
while (h->current != hot_cur && handled == MSG_NOT_HANDLED)
{
current = WIDGET (hot_cur->data);
if (widget_get_options (current, WOP_WANT_HOTKEY)
&& !widget_get_state (current, WST_DISABLED))
handled = send_message (current, NULL, MSG_HOTKEY, d_key, NULL);
if (handled == MSG_NOT_HANDLED)
hot_cur = dlg_get_widget_next_of (hot_cur);
}
if (handled == MSG_HANDLED)
widget_select (WIDGET (hot_cur->data));
return handled;
}
/* --------------------------------------------------------------------------------------------- */
static void
dlg_key_event (WDialog * h, int d_key)
{
cb_ret_t handled;
if (h->widgets == NULL)
return;
if (h->current == NULL)
h->current = h->widgets;
/* TAB used to cycle */
if (!widget_get_options (WIDGET (h), WOP_WANT_TAB))
{
if (d_key == '\t')
{
dlg_select_next_widget (h);
return;
}
else if ((d_key & ~(KEY_M_SHIFT | KEY_M_CTRL)) == '\t')
{
dlg_select_prev_widget (h);
return;
}
}
/* first can dlg_callback handle the key */
handled = send_message (h, NULL, MSG_KEY, d_key, NULL);
/* next try the hotkey */
if (handled == MSG_NOT_HANDLED)
handled = dlg_try_hotkey (h, d_key);
if (handled == MSG_HANDLED)
send_message (h, NULL, MSG_HOTKEY_HANDLED, 0, NULL);
else
/* not used - then try widget_callback */
handled = send_message (h->current->data, NULL, MSG_KEY, d_key, NULL);
/* not used- try to use the unhandled case */
if (handled == MSG_NOT_HANDLED)
handled = send_message (h, NULL, MSG_UNHANDLED_KEY, d_key, NULL);
if (handled == MSG_NOT_HANDLED)
handled = dlg_handle_key (h, d_key);
(void) handled;
send_message (h, NULL, MSG_POST_KEY, d_key, NULL);
}
/* --------------------------------------------------------------------------------------------- */
static void
frontend_dlg_run (WDialog * h)
{
Widget *wh = WIDGET (h);
Gpm_Event event;
event.x = -1;
/* close opened editors, viewers, etc */
if (!widget_get_state (wh, WST_MODAL) && mc_global.midnight_shutdown)
{
send_message (h, NULL, MSG_VALIDATE, 0, NULL);
return;
}
while (widget_get_state (wh, WST_ACTIVE))
{
int d_key;
if (mc_global.tty.winch_flag != 0)
dialog_change_screen_size ();
if (is_idle ())
{
if (idle_hook)
execute_hooks (idle_hook);
while (widget_get_state (wh, WST_IDLE) && is_idle ())
send_message (wh, NULL, MSG_IDLE, 0, NULL);
/* Allow terminating the dialog from the idle handler */
if (!widget_get_state (wh, WST_ACTIVE))
break;
}
update_cursor (h);
/* Clear interrupt flag */
tty_got_interrupt ();
d_key = tty_get_event (&event, h->mouse_status == MOU_REPEAT, TRUE);
dlg_process_event (h, d_key, &event);
if (widget_get_state (wh, WST_CLOSED))
send_message (h, NULL, MSG_VALIDATE, 0, NULL);
}
}
/* --------------------------------------------------------------------------------------------- */
static int
dlg_find_widget_by_id (gconstpointer a, gconstpointer b)
{
const Widget *w = CONST_WIDGET (a);
unsigned long id = GPOINTER_TO_UINT (b);
return w->id == id ? 0 : 1;
}
/* --------------------------------------------------------------------------------------------- */
static void
dlg_widget_set_position (gpointer data, gpointer user_data)
{
/* there are, mainly, 2 generally possible situations:
* 1. control sticks to one side - it should be moved
* 2. control sticks to two sides of one direction - it should be sized
*/
Widget *c = WIDGET (data);
Widget *wh = WIDGET (c->owner);
const widget_shift_scale_t *wss = (const widget_shift_scale_t *) user_data;
int x = c->x;
int y = c->y;
int cols = c->cols;
int lines = c->lines;
if ((c->pos_flags & WPOS_CENTER_HORZ) != 0)
x = wh->x + (wh->cols - c->cols) / 2;
else if ((c->pos_flags & WPOS_KEEP_LEFT) != 0 && (c->pos_flags & WPOS_KEEP_RIGHT) != 0)
{
x += wss->shift_x;
cols += wss->scale_x;
}
else if ((c->pos_flags & WPOS_KEEP_LEFT) != 0)
x += wss->shift_x;
else if ((c->pos_flags & WPOS_KEEP_RIGHT) != 0)
x += wss->shift_x + wss->scale_x;
if ((c->pos_flags & WPOS_CENTER_VERT) != 0)
y = wh->y + (wh->lines - c->lines) / 2;
else if ((c->pos_flags & WPOS_KEEP_TOP) != 0 && (c->pos_flags & WPOS_KEEP_BOTTOM) != 0)
{
y += wss->shift_y;
lines += wss->scale_y;
}
else if ((c->pos_flags & WPOS_KEEP_TOP) != 0)
y += wss->shift_y;
else if ((c->pos_flags & WPOS_KEEP_BOTTOM) != 0)
y += wss->shift_y + wss->scale_y;
widget_set_size (c, y, x, lines, cols);
}
/* --------------------------------------------------------------------------------------------- */
static void
dlg_adjust_position (widget_pos_flags_t pos_flags, int *y, int *x, int *lines, int *cols)
{
if ((pos_flags & WPOS_FULLSCREEN) != 0)
{
*y = 0;
*x = 0;
*lines = LINES;
*cols = COLS;
}
else
{
if ((pos_flags & WPOS_CENTER_HORZ) != 0)
*x = (COLS - *cols) / 2;
if ((pos_flags & WPOS_CENTER_VERT) != 0)
*y = (LINES - *lines) / 2;
if ((pos_flags & WPOS_TRYUP) != 0)
{
if (*y > 3)
*y -= 2;
else if (*y == 3)
*y = 2;
}
}
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/** Clean the dialog area, draw the frame and the title */
void
dlg_default_repaint (WDialog * h)
{
Widget *wh = WIDGET (h);
int space;
if (!widget_get_state (wh, WST_ACTIVE))
return;
space = h->compact ? 0 : 1;
tty_setcolor (h->color[DLG_COLOR_NORMAL]);
dlg_erase (h);
tty_draw_box (wh->y + space, wh->x + space, wh->lines - 2 * space, wh->cols - 2 * space, FALSE);
if (h->title != NULL)
{
tty_setcolor (h->color[DLG_COLOR_TITLE]);
widget_move (h, space, (wh->cols - str_term_width1 (h->title)) / 2);
tty_print_string (h->title);
}
}
/* --------------------------------------------------------------------------------------------- */
/** this function allows to set dialog position */
void
dlg_set_position (WDialog * h, int y, int x, int lines, int cols)
{
Widget *wh = WIDGET (h);
widget_shift_scale_t wss;
/* save old positions, will be used to reposition childs */
int ox, oy, oc, ol;
/* save old positions, will be used to reposition childs */
ox = wh->x;
oy = wh->y;
oc = wh->cols;
ol = wh->lines;
wh->x = x;
wh->y = y;
wh->lines = lines;
wh->cols = cols;
/* dialog is empty */
if (h->widgets == NULL)
return;
if (h->current == NULL)
h->current = h->widgets;
/* values by which controls should be moved */
wss.shift_x = wh->x - ox;
wss.scale_x = wh->cols - oc;
wss.shift_y = wh->y - oy;
wss.scale_y = wh->lines - ol;
if (wss.shift_x != 0 || wss.shift_y != 0 || wss.scale_x != 0 || wss.scale_y != 0)
g_list_foreach (h->widgets, dlg_widget_set_position, &wss);
}
/* --------------------------------------------------------------------------------------------- */
/** Set dialog size and position */
void
dlg_set_size (WDialog * h, int lines, int cols)
{
int x = 0, y = 0;
dlg_adjust_position (WIDGET (h)->pos_flags, &y, &x, &lines, &cols);
dlg_set_position (h, y, x, lines, cols);
}
/* --------------------------------------------------------------------------------------------- */
/** Default dialog callback */
cb_ret_t
dlg_default_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
{
WDialog *h = DIALOG (w);
(void) sender;
(void) parm;
(void) data;
switch (msg)
{
case MSG_DRAW:
if (h->color != NULL)
{
dlg_default_repaint (h);
return MSG_HANDLED;
}
return MSG_NOT_HANDLED;
case MSG_IDLE:
/* we don't want endless loop */
widget_idle (w, FALSE);
return MSG_HANDLED;
case MSG_RESIZE:
/* this is default resizing mechanism */
/* the main idea of this code is to resize dialog
according to flags (if any of flags require automatic
resizing, like WPOS_CENTER, end after that reposition
controls in dialog according to flags of widget) */
dlg_set_size (h, w->lines, w->cols);
return MSG_HANDLED;
default:
break;
}
return MSG_NOT_HANDLED;
}
/* --------------------------------------------------------------------------------------------- */
WDialog *
dlg_create (gboolean modal, int y1, int x1, int lines, int cols, widget_pos_flags_t pos_flags,
gboolean compact, const int *colors, widget_cb_fn callback,
widget_mouse_cb_fn mouse_callback, const char *help_ctx, const char *title)
{
WDialog *new_d;
Widget *w;
new_d = g_new0 (WDialog, 1);
w = WIDGET (new_d);
dlg_adjust_position (pos_flags, &y1, &x1, &lines, &cols);
widget_init (w, y1, x1, lines, cols, (callback != NULL) ? callback : dlg_default_callback,
mouse_callback);
w->pos_flags = pos_flags;
w->options |= WOP_SELECTABLE | WOP_TOP_SELECT;
w->state |= WST_CONSTRUCT | WST_FOCUSED;
if (modal)
w->state |= WST_MODAL;
new_d->color = colors;
new_d->help_ctx = help_ctx;
new_d->compact = compact;
new_d->data = NULL;
new_d->mouse_status = MOU_UNHANDLED;
/* Strip existing spaces, add one space before and after the title */
if (title != NULL && *title != '\0')
{
char *t;
t = g_strstrip (g_strdup (title));
if (*t != '\0')
new_d->title = g_strdup_printf (" %s ", t);
g_free (t);
}
/* unique name of event group for this dialog */
new_d->event_group = g_strdup_printf ("%s_%p", MCEVENT_GROUP_DIALOG, (void *) new_d);
return new_d;
}
/* --------------------------------------------------------------------------------------------- */
void
dlg_set_default_colors (void)
{
dialog_colors[DLG_COLOR_NORMAL] = COLOR_NORMAL;
dialog_colors[DLG_COLOR_FOCUS] = COLOR_FOCUS;
dialog_colors[DLG_COLOR_HOT_NORMAL] = COLOR_HOT_NORMAL;
dialog_colors[DLG_COLOR_HOT_FOCUS] = COLOR_HOT_FOCUS;
dialog_colors[DLG_COLOR_TITLE] = COLOR_TITLE;
alarm_colors[DLG_COLOR_NORMAL] = ERROR_COLOR;
alarm_colors[DLG_COLOR_FOCUS] = ERROR_FOCUS;
alarm_colors[DLG_COLOR_HOT_NORMAL] = ERROR_HOT_NORMAL;
alarm_colors[DLG_COLOR_HOT_FOCUS] = ERROR_HOT_FOCUS;
alarm_colors[DLG_COLOR_TITLE] = ERROR_TITLE;
listbox_colors[DLG_COLOR_NORMAL] = PMENU_ENTRY_COLOR;
listbox_colors[DLG_COLOR_FOCUS] = PMENU_SELECTED_COLOR;
listbox_colors[DLG_COLOR_HOT_NORMAL] = PMENU_ENTRY_COLOR;
listbox_colors[DLG_COLOR_HOT_FOCUS] = PMENU_SELECTED_COLOR;
listbox_colors[DLG_COLOR_TITLE] = PMENU_TITLE_COLOR;
}
/* --------------------------------------------------------------------------------------------- */
void
dlg_erase (WDialog * h)
{
Widget *wh = WIDGET (h);
if (wh != NULL && widget_get_state (wh, WST_ACTIVE))
tty_fill_region (wh->y, wh->x, wh->lines, wh->cols, ' ');
}
/* --------------------------------------------------------------------------------------------- */
/**
* Insert widget to dialog before requested widget. Make the widget current. Return widget ID.
*/
unsigned long
add_widget_autopos (WDialog * h, void *w, widget_pos_flags_t pos_flags, const void *before)
{
Widget *wh = WIDGET (h);
Widget *widget;
GList *new_current;
/* Don't accept 0 widgets */
if (w == NULL)
abort ();
widget = WIDGET (w);
if ((pos_flags & WPOS_CENTER_HORZ) != 0)
widget->x = (wh->cols - widget->cols) / 2;
widget->x += wh->x;
if ((pos_flags & WPOS_CENTER_VERT) != 0)
widget->y = (wh->lines - widget->lines) / 2;
widget->y += wh->y;
widget->owner = h;
widget->pos_flags = pos_flags;
widget->id = h->widget_id++;
if (h->widgets == NULL || before == NULL)
{
h->widgets = g_list_append (h->widgets, widget);
new_current = g_list_last (h->widgets);
}
else
{
GList *b;
b = g_list_find (h->widgets, before);
/* don't accept widget not from dialog. This shouldn't happen */
if (b == NULL)
abort ();
b = g_list_next (b);
h->widgets = g_list_insert_before (h->widgets, b, widget);
if (b != NULL)
new_current = g_list_previous (b);
else
new_current = g_list_last (h->widgets);
}
/* widget has been added at runtime */
if (widget_get_state (wh, WST_ACTIVE))
{
send_message (widget, NULL, MSG_INIT, 0, NULL);
widget_select (widget);
}
else
h->current = new_current;
return widget->id;
}
/* --------------------------------------------------------------------------------------------- */
/** wrapper to simply add lefttop positioned controls */
unsigned long
add_widget (WDialog * h, void *w)
{
return add_widget_autopos (h, w, WPOS_KEEP_DEFAULT,
h->current != NULL ? h->current->data : NULL);
}
/* --------------------------------------------------------------------------------------------- */
unsigned long
add_widget_before (WDialog * h, void *w, void *before)
{
return add_widget_autopos (h, w, WPOS_KEEP_DEFAULT, before);
}
/* --------------------------------------------------------------------------------------------- */
/** delete widget from dialog */
void
del_widget (void *w)
{
WDialog *h;
GList *d;
/* Don't accept NULL widget. This shouldn't happen */
if (w == NULL)
abort ();
h = WIDGET (w)->owner;
d = g_list_find (h->widgets, w);
if (d == h->current)
dlg_set_current_widget_next (h);
h->widgets = g_list_remove_link (h->widgets, d);
if (h->widgets == NULL)
h->current = NULL;
send_message (d->data, NULL, MSG_DESTROY, 0, NULL);
g_free (d->data);
g_list_free_1 (d);
/* widget has been deleted in runtime */
if (widget_get_state (WIDGET (h), WST_ACTIVE))
{
dlg_redraw (h);
dlg_select_current_widget (h);
}
}
/* --------------------------------------------------------------------------------------------- */
void
do_refresh (void)
{
GList *d = top_dlg;
if (fast_refresh)
{
if ((d != NULL) && (d->data != NULL))
dlg_redraw (DIALOG (d->data));
}
else
{
/* Search first fullscreen dialog */
for (; d != NULL; d = g_list_next (d))
if (d->data != NULL && (WIDGET (d->data)->pos_flags & WPOS_FULLSCREEN) != 0)
break;
/* back to top dialog */
for (; d != NULL; d = g_list_previous (d))
if (d->data != NULL)
dlg_redraw (DIALOG (d->data));
}
}
/* --------------------------------------------------------------------------------------------- */
/** broadcast a message to all the widgets in a dialog */
void
dlg_broadcast_msg (WDialog * h, widget_msg_t msg)
{
dlg_broadcast_msg_to (h, msg, FALSE, 0);
}
/* --------------------------------------------------------------------------------------------- */
/** Find the widget with the given callback in the dialog h */
Widget *
find_widget_type (const WDialog * h, widget_cb_fn callback)
{
GList *w;
w = g_list_find_custom (h->widgets, (gconstpointer) callback, dlg_find_widget_callback);
return (w == NULL) ? NULL : WIDGET (w->data);
}
/* --------------------------------------------------------------------------------------------- */
GList *
dlg_find (const WDialog * h, const Widget * w)
{
return (w->owner == NULL || w->owner != h) ? NULL : g_list_find (h->widgets, w);
}
/* --------------------------------------------------------------------------------------------- */
/** Find the widget with the given id */
Widget *
dlg_find_by_id (const WDialog * h, unsigned long id)
{
GList *w;
w = g_list_find_custom (h->widgets, GUINT_TO_POINTER (id), dlg_find_widget_by_id);
return w != NULL ? WIDGET (w->data) : NULL;
}
/* --------------------------------------------------------------------------------------------- */
/** Find the widget with the given id in the dialog h and select it */
void
dlg_select_by_id (const WDialog * h, unsigned long id)
{
Widget *w;
w = dlg_find_by_id (h, id);
if (w != NULL)
widget_select (w);
}
/* --------------------------------------------------------------------------------------------- */
/** Try to select previous widget in the tab order */
void
dlg_select_prev_widget (WDialog * h)
{
dlg_select_next_or_prev (h, FALSE);
}
/* --------------------------------------------------------------------------------------------- */
/** Try to select next widget in the tab order */
void
dlg_select_next_widget (WDialog * h)
{
dlg_select_next_or_prev (h, TRUE);
}
/* --------------------------------------------------------------------------------------------- */
void
update_cursor (WDialog * h)
{
GList *p = h->current;
if (p != NULL && widget_get_state (WIDGET (h), WST_ACTIVE))
{
Widget *w;
w = WIDGET (p->data);
if (!widget_get_state (w, WST_DISABLED) && widget_get_options (w, WOP_WANT_CURSOR))
send_message (w, NULL, MSG_CURSOR, 0, NULL);
else
do
{
p = dlg_get_widget_next_of (p);
if (p == h->current)
break;
w = WIDGET (p->data);
if (!widget_get_state (w, WST_DISABLED) && widget_get_options (w, WOP_WANT_CURSOR)
&& send_message (w, NULL, MSG_CURSOR, 0, NULL) == MSG_HANDLED)
break;
}
while (TRUE);
}
}
/* --------------------------------------------------------------------------------------------- */
/**
* Redraw the widgets in reverse order, leaving the current widget
* as the last one
*/
void
dlg_redraw (WDialog * h)
{
if (!widget_get_state (WIDGET (h), WST_ACTIVE))
return;
if (h->winch_pending)
{
h->winch_pending = FALSE;
send_message (h, NULL, MSG_RESIZE, 0, NULL);
}
send_message (h, NULL, MSG_DRAW, 0, NULL);
dlg_broadcast_msg (h, MSG_DRAW);
update_cursor (h);
}
/* --------------------------------------------------------------------------------------------- */
void
dlg_stop (WDialog * h)
{
widget_set_state (WIDGET (h), WST_CLOSED, TRUE);
}
/* --------------------------------------------------------------------------------------------- */
/** Init the process */
void
dlg_init (WDialog * h)
{
Widget *wh = WIDGET (h);
if (top_dlg != NULL && widget_get_state (WIDGET (top_dlg->data), WST_MODAL))
widget_set_state (wh, WST_MODAL, TRUE);
/* add dialog to the stack */
top_dlg = g_list_prepend (top_dlg, h);
/* Initialize dialog manager and widgets */
if (widget_get_state (wh, WST_CONSTRUCT))
{
if (!widget_get_state (wh, WST_MODAL))
dialog_switch_add (h);
send_message (h, NULL, MSG_INIT, 0, NULL);
dlg_broadcast_msg (h, MSG_INIT);
dlg_read_history (h);
}
/* Select the first widget that takes focus */
while (h->current != NULL && !widget_get_options (WIDGET (h->current->data), WOP_SELECTABLE)
&& !widget_get_state (WIDGET (h->current->data), WST_DISABLED))
dlg_set_current_widget_next (h);
widget_set_state (wh, WST_ACTIVE, TRUE);
dlg_redraw (h);
/* focus found widget */
widget_set_state (WIDGET (h->current->data), WST_FOCUSED, TRUE);
h->ret_value = 0;
}
/* --------------------------------------------------------------------------------------------- */
void
dlg_process_event (WDialog * h, int key, Gpm_Event * event)
{
if (key == EV_NONE)
{
if (tty_got_interrupt ())
if (send_message (h, NULL, MSG_ACTION, CK_Cancel, NULL) != MSG_HANDLED)
dlg_execute_cmd (h, CK_Cancel);
}
else if (key == EV_MOUSE)
h->mouse_status = dlg_mouse_event (h, event);
else
dlg_key_event (h, key);
}
/* --------------------------------------------------------------------------------------------- */
/** Shutdown the dlg_run */
void
dlg_run_done (WDialog * h)
{
top_dlg = g_list_remove (top_dlg, h);
if (widget_get_state (WIDGET (h), WST_CLOSED))
{
send_message (h, h->current->data, MSG_END, 0, NULL);
if (!widget_get_state (WIDGET (h), WST_MODAL))
dialog_switch_remove (h);
}
}
/* --------------------------------------------------------------------------------------------- */
/**
* Standard run dialog routine
* We have to keep this routine small so that we can duplicate it's
* behavior on complex routines like the file routines, this way,
* they can call the dlg_process_event without rewriting all the code
*/
int
dlg_run (WDialog * h)
{
dlg_init (h);
frontend_dlg_run (h);
dlg_run_done (h);
return h->ret_value;
}
/* --------------------------------------------------------------------------------------------- */
void
dlg_destroy (WDialog * h)
{
/* if some widgets have history, save all history at one moment here */
dlg_save_history (h);
dlg_broadcast_msg (h, MSG_DESTROY);
g_list_free_full (h->widgets, g_free);
mc_event_group_del (h->event_group);
g_free (h->event_group);
g_free (h->title);
g_free (h);
do_refresh ();
}
/* --------------------------------------------------------------------------------------------- */
/**
* Write history to the ${XDG_CACHE_HOME}/mc/history file
*/
void
dlg_save_history (WDialog * h)
{
char *profile;
int i;
if (num_history_items_recorded == 0) /* this is how to disable */
return;
profile = mc_config_get_full_path (MC_HISTORY_FILE);
i = open (profile, O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
if (i != -1)
close (i);
/* Make sure the history is only readable by the user */
if (chmod (profile, S_IRUSR | S_IWUSR) != -1 || errno == ENOENT)
{
ev_history_load_save_t event_data;
event_data.cfg = mc_config_init (profile, FALSE);
event_data.receiver = NULL;
/* get all histories in dialog */
mc_event_raise (h->event_group, MCEVENT_HISTORY_SAVE, &event_data);
mc_config_save_file (event_data.cfg, NULL);
mc_config_deinit (event_data.cfg);
}
g_free (profile);
}
/* --------------------------------------------------------------------------------------------- */
char *
dlg_get_title (const WDialog * h, size_t len)
{
char *t;
if (h == NULL)
abort ();
if (h->get_title != NULL)
t = h->get_title (h, len);
else
t = g_strdup ("");
return t;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Switch current widget to widget after current in dialog.
*
* @param h WDialog widget
*/
void
dlg_set_current_widget_next (WDialog * h)
{
h->current = dlg_get_next_or_prev_of (h->current, TRUE);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Switch current widget to widget before current in dialog.
*
* @param h WDialog widget
*/
void
dlg_set_current_widget_prev (WDialog * h)
{
h->current = dlg_get_next_or_prev_of (h->current, FALSE);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Get widget that is after specified widget in dialog.
*
* @param w widget holder
*
* @return widget that is after "w" or NULL if "w" is NULL or widget doesn't have owner
*/
GList *
dlg_get_widget_next_of (GList * w)
{
return dlg_get_next_or_prev_of (w, TRUE);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Get widget that is before specified widget in dialog.
*
* @param w widget holder
*
* @return widget that is before "w" or NULL if "w" is NULL or widget doesn't have owner
*/
GList *
dlg_get_widget_prev_of (GList * w)
{
return dlg_get_next_or_prev_of (w, FALSE);
}
/* --------------------------------------------------------------------------------------------- */
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