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/*
Widgets for the Midnight Commander
Copyright (C) 1994-2024
Free Software Foundation, Inc.
Authors:
Radek Doulik, 1994, 1995
Miguel de Icaza, 1994, 1995
Jakub Jelinek, 1995
Andrej Borsenkow, 1996
Norbert Warmuth, 1997
Andrew Borodin <aborodin@vmail.ru>, 2009-2022
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 button.c
* \brief Source: WButton widget
*/
#include <config.h>
#include <stdlib.h>
#include "lib/global.h"
#include "lib/tty/tty.h"
#include "lib/strutil.h"
#include "lib/widget.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
cb_ret_t
button_default_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
{
WButton *b = BUTTON (w);
WGroup *g = w->owner;
WDialog *h = DIALOG (g);
int off = 0;
switch (msg)
{
case MSG_HOTKEY:
/*
* Don't let the default button steal Enter from the current
* button. This is a workaround for the flawed event model
* when hotkeys are sent to all widgets before the key is
* handled by the current widget.
*/
if (parm == '\n' && WIDGET (g->current->data) == w)
{
send_message (w, sender, MSG_KEY, ' ', data);
return MSG_HANDLED;
}
if (parm == '\n' && b->flags == DEFPUSH_BUTTON)
{
send_message (w, sender, MSG_KEY, ' ', data);
return MSG_HANDLED;
}
if (b->text.hotkey != NULL && g_ascii_tolower ((gchar) b->text.hotkey[0]) == parm)
{
send_message (w, sender, MSG_KEY, ' ', data);
return MSG_HANDLED;
}
return MSG_NOT_HANDLED;
case MSG_KEY:
if (parm != ' ' && parm != '\n')
return MSG_NOT_HANDLED;
h->ret_value = b->action;
if (b->callback == NULL || b->callback (b, b->action) != 0)
dlg_close (h);
return MSG_HANDLED;
case MSG_CURSOR:
switch (b->flags)
{
case DEFPUSH_BUTTON:
off = 3;
break;
case NORMAL_BUTTON:
off = 2;
break;
case NARROW_BUTTON:
off = 1;
break;
case HIDDEN_BUTTON:
default:
off = 0;
break;
}
widget_gotoyx (w, 0, b->hotpos + off);
return MSG_HANDLED;
case MSG_DRAW:
{
gboolean focused;
focused = widget_get_state (w, WST_FOCUSED);
widget_selectcolor (w, focused, FALSE);
widget_gotoyx (w, 0, 0);
switch (b->flags)
{
case DEFPUSH_BUTTON:
tty_print_string ("[< ");
break;
case NORMAL_BUTTON:
tty_print_string ("[ ");
break;
case NARROW_BUTTON:
tty_print_string ("[");
break;
case HIDDEN_BUTTON:
default:
return MSG_HANDLED;
}
hotkey_draw (w, b->text, focused);
switch (b->flags)
{
case DEFPUSH_BUTTON:
tty_print_string (" >]");
break;
case NORMAL_BUTTON:
tty_print_string (" ]");
break;
case NARROW_BUTTON:
tty_print_string ("]");
break;
default:
break;
}
return MSG_HANDLED;
}
case MSG_DESTROY:
hotkey_free (b->text);
return MSG_HANDLED;
default:
return widget_default_callback (w, sender, msg, parm, data);
}
}
/* --------------------------------------------------------------------------------------------- */
void
button_mouse_default_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
{
(void) event;
switch (msg)
{
case MSG_MOUSE_DOWN:
widget_select (w);
break;
case MSG_MOUSE_CLICK:
send_message (w, NULL, MSG_KEY, ' ', NULL);
send_message (w->owner, w, MSG_POST_KEY, ' ', NULL);
break;
default:
break;
}
}
/* --------------------------------------------------------------------------------------------- */
WButton *
button_new (int y, int x, int action, button_flags_t flags, const char *text, bcback_fn callback)
{
WRect r = { y, x, 1, 1 };
WButton *b;
Widget *w;
b = g_new (WButton, 1);
w = WIDGET (b);
b->action = action;
b->flags = flags;
b->text = hotkey_new (text);
r.cols = button_get_len (b);
widget_init (w, &r, button_default_callback, button_mouse_default_callback);
w->options |= WOP_SELECTABLE | WOP_WANT_CURSOR | WOP_WANT_HOTKEY;
b->callback = callback;
b->hotpos = (b->text.hotkey != NULL) ? str_term_width1 (b->text.start) : -1;
return b;
}
/* --------------------------------------------------------------------------------------------- */
char *
button_get_text (const WButton * b)
{
return hotkey_get_text (b->text);
}
/* --------------------------------------------------------------------------------------------- */
void
button_set_text (WButton * b, const char *text)
{
Widget *w = WIDGET (b);
hotkey_t hk;
hk = hotkey_new (text);
if (hotkey_equal (b->text, hk))
{
hotkey_free (hk);
return;
}
hotkey_free (b->text);
b->text = hk;
b->hotpos = (b->text.hotkey != NULL) ? str_term_width1 (b->text.start) : -1;
w->rect.cols = button_get_len (b);
widget_draw (w);
}
/* --------------------------------------------------------------------------------------------- */
int
button_get_len (const WButton * b)
{
int ret = hotkey_width (b->text);
switch (b->flags)
{
case DEFPUSH_BUTTON:
ret += 6;
break;
case NORMAL_BUTTON:
ret += 4;
break;
case NARROW_BUTTON:
ret += 2;
break;
case HIDDEN_BUTTON:
default:
return 0;
}
return ret;
}
/* --------------------------------------------------------------------------------------------- */
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