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/*
Copyright (C) 2001 Paul Davis
This program 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 2 of the License, or
(at your option) any later version.
This program 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <gtkmm.h>
#include <gtkmm2ext/grouped_buttons.h>
using namespace std;
GroupedButtons::GroupedButtons (vector<Gtk::ToggleButton *>& buttonset)
{
uint32_t n = 0;
buttons = buttonset;
for (vector<Gtk::ToggleButton *>::iterator i = buttons.begin(); i != buttons.end(); ++i, ++n) {
if ((*i)->get_active()) {
current_active = n;
}
(*i)->signal_clicked().connect (sigc::bind (mem_fun (*this, &GroupedButtons::one_clicked), n));
}
}
GroupedButtons::GroupedButtons (uint32_t nbuttons, uint32_t first_active)
{
buttons.reserve (nbuttons);
current_active = first_active;
for (uint32_t n = 0; n < nbuttons; ++n) {
Gtk::ToggleButton *button;
button = manage (new (Gtk::ToggleButton));
if (n == current_active) {
button->set_active (true);
}
button->signal_clicked().connect (sigc::bind (mem_fun (*this, &GroupedButtons::one_clicked), n));
buttons.push_back (button);
}
}
static gint
reactivate_button (void *arg)
{
Gtk::ToggleButton *b = (Gtk::ToggleButton *) arg;
b->set_active (true);
return FALSE;
}
void
GroupedButtons::one_clicked (uint32_t which)
{
if (buttons[which]->get_active()) {
if (which != current_active) {
uint32_t old = current_active;
current_active = which;
buttons[old]->set_active (false);
}
} else if (which == current_active) {
/* Someobody tried to unset the current active
button by clicking on it. This caused
set_active (false) to be called. We don't
allow that, so just reactivate it.
Don't try this right here, because of some
design glitches with GTK+ toggle buttons.
Setting the button back to active from
within the signal emission that marked
it as inactive causes a segfault ...
*/
g_idle_add (reactivate_button, buttons[which]);
}
}
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