libRocket/Source/Controls/Python/SelectOptionProxy.cpp

/*
 * This source file is part of libRocket, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://www.librocket.com
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#include "precompiled.h"
#include "SelectOptionProxy.h"
#include "../../../Include/Rocket/Core/Element.h"

namespace Rocket {
namespace Controls {
namespace Python {

SelectOptionProxy::SelectOptionProxy(ElementFormControlSelect* _element)
{
	element = _element;

	// Update the element to force it to evaluate its options if necessary.
	element->Update();
}

SelectOptionProxy::~SelectOptionProxy()
{
}

void SelectOptionProxy::InitialisePythonInterface()
{
	python::class_< SelectOption >("SelectOption", python::no_init)
		.add_property("element", python::make_function(&SelectOption::GetElement, python::return_value_policy< python::return_by_value >()))
		.add_property("value", python::make_function(&SelectOption::GetValue, python::return_value_policy< python::return_by_value >()))
		;

	python::class_< SelectOptionProxy >("SelectOptionProxy", python::no_init)
		.def("__len__", &SelectOptionProxy::Len)
		.def("__getitem__", &SelectOptionProxy::GetItem, python::return_value_policy< python::return_by_value >())
		;
}

int SelectOptionProxy::Len()
{
	return element->GetNumOptions();
}

SelectOption SelectOptionProxy::GetItem(int index)
{
	// Support indexing from both ends.
	if (index < 0)
		index = element->GetNumAttributes() + index;

	// Throw an exception if we're out of range. This is required to support Python iteration.
	if (index >= element->GetNumOptions())
	{
		PyErr_SetString(PyExc_IndexError, "Index out of range.");
		python::throw_error_already_set();
	}

	return *element->GetOption(index);
}

}
}
}