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/*
Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
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.
*/
#ifndef DCPOMATIC_MULTIPLE_WIDGET_H
#define DCPOMATIC_MULTIPLE_WIDGET_H
#include <vector>
#include <wx/wx.h>
#include <wx/gbsizer.h>
#include <boost/function.hpp>
#include "wx_util.h"
template <class T>
class MultipleWidget
{
public:
MultipleWidget (wxWindow* parent, T* wrapped)
: _wrapped (wrapped)
, _sizer (0)
, _button (new wxButton (parent, wxID_ANY, _("Multiple values")))
{
_button->SetToolTip (_("Click the button to set all selections to the same value"));
_button->Hide ();
_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&MultipleWidget::button_clicked, this));
}
T* wrapped () const
{
return _wrapped;
}
void add (wxGridBagSizer* sizer, wxGBPosition position)
{
_sizer = sizer;
_position = position;
_sizer->Add (_wrapped, _position);
}
void set_single ()
{
if (_wrapped->IsShown ()) {
return;
}
_sizer->Detach (_button);
_button->Hide ();
_sizer->Add (_wrapped, _position);
_wrapped->Show ();
_sizer->Layout ();
}
void set_multiple ()
{
if (_button->IsShown ()) {
return;
}
_wrapped->Hide ();
_sizer->Detach (_wrapped);
_button->Show ();
_sizer->Add (_button, _position);
_sizer->Layout ();
}
boost::signals2::signal<void (void)> SetAllSame;
private:
void button_clicked ()
{
SetAllSame ();
}
T* _wrapped;
wxGridBagSizer* _sizer;
wxGBPosition _position;
wxButton* _button;
};
/** Set up some MultipleWidget<SpinCtrl> using a (possibly) multiple selection of objects of type T.
* The value is obtained from the T objects using getter.
*/
template <class T>
void
set_multiple (std::vector<boost::shared_ptr<T> > data, MultipleWidget<wxSpinCtrl>* widget, boost::function<int (T*)> getter)
{
if (data.empty ()) {
widget->set_single ();
widget->wrapped()->SetValue (0);
return;
}
typename std::vector<boost::shared_ptr<T> >::iterator i = data.begin();
int first = boost::bind (getter, data.front().get()) ();
while (i != data.end() && boost::bind (getter, i->get())() == first) {
++i;
}
if (i == data.end ()) {
/* All values are the same */
widget->set_single ();
checked_set (widget->wrapped(), first);
} else {
/* At least one different value */
widget->set_multiple ();
}
}
#endif
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