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// K-3D
// Copyright (c) 1995-2008, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\author Timothy M. Shead (tshead@k-3d.com)
*/
#include <boost/python.hpp>
#include <k3dsdk/python/ifile_change_notifier_python.h>
#include <k3dsdk/python/iunknown_python.h>
#include <k3dsdk/python/utility_python.h>
#include <k3dsdk/ifile_change_notifier.h>
#include <k3dsdk/path.h>
using namespace boost::python;
namespace k3d
{
namespace python
{
///////////////////////////////////////////////////////////////////////////////////////////////
// file_change_receiver
class file_change_receiver
{
public:
void file_changed(const filesystem::path& Path)
{
changed_files.push_back(Path);
}
boost::python::list changed()
{
boost::python::list result;
for(k3d::uint_t i = 0; i != changed_files.size(); ++i)
result.append(changed_files[i]);
return result;
}
void clear()
{
changed_files.clear();
}
private:
std::vector<filesystem::path> changed_files;
};
///////////////////////////////////////////////////////////////////////////////////////////////
// ifile_change_notifier
static uint_t watch_file(iunknown_wrapper& Self, const filesystem::path& Path, file_change_receiver& Receiver)
{
return Self.wrapped<k3d::ifile_change_notifier>().watch_file(Path, sigc::bind(sigc::mem_fun(Receiver, &file_change_receiver::file_changed), Path));
}
static void unwatch_file(iunknown_wrapper& Self, const uint_t WatchID)
{
Self.wrapped<k3d::ifile_change_notifier>().unwatch_file(WatchID);
}
static void wait_for_changes(iunknown_wrapper& Self)
{
Self.wrapped<k3d::ifile_change_notifier>().wait_for_changes();
}
static uint_t change_count(iunknown_wrapper& Self)
{
return Self.wrapped<k3d::ifile_change_notifier>().change_count();
}
static void signal_change(iunknown_wrapper& Self)
{
Self.wrapped<k3d::ifile_change_notifier>().signal_change();
}
void define_class_file_change_receiver()
{
class_<file_change_receiver>("file_change_receiver",
"Helper class that caches file-change notifications for later retrieval.")
.def("changed", &file_change_receiver::changed,
"Retrieves the list of files that have changed.")
.def("clear", &file_change_receiver::clear,
"Clears the list of files that have changed.")
;
}
void define_methods_ifile_change_notifier(k3d::iunknown& Interface, boost::python::object& Instance)
{
if(!dynamic_cast<k3d::ifile_change_notifier*>(&Interface))
return;
utility::add_method(utility::make_function(&watch_file, "Watch a file for changes.\n\n" "@rtype: integer watch identifier\n"), "watch_file", Instance);
utility::add_method(utility::make_function(&unwatch_file, "Stops watching a file for changes."), "unwatch_file", Instance);
utility::add_method(utility::make_function(&wait_for_changes, "Blocks indefinitely until at least one file change has been received."), "wait_for_changes", Instance);
utility::add_method(utility::make_function(&change_count, "Returns the number of file changes that are pending, ready to be signalled. This method never blocks."), "change_count", Instance);
utility::add_method(utility::make_function(&signal_change, "Signals the next file change that is pending, if any. This method never blocks."), "signal_change", Instance);
}
} // namespace python
} // namespace k3d
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