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// This is the implementation of the ListWrapper class.
//
// Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of PyQt.
//
// This file may be used under the terms of the GNU General Public
// License versions 2.0 or 3.0 as published by the Free Software
// Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
// included in the packaging of this file. Alternatively you may (at
// your option) use any later version of the GNU General Public
// License if such license has been publicly approved by Riverbank
// Computing Limited (or its successors, if any) and the KDE Free Qt
// Foundation. In addition, as a special exception, Riverbank gives you
// certain additional rights. These rights are described in the Riverbank
// GPL Exception version 1.1, which can be found in the file
// GPL_EXCEPTION.txt in this package.
//
// If you are unsure which license is appropriate for your use, please
// contact the sales department at sales@riverbankcomputing.com.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#include "sipAPIQtDeclarative.h"
#include "qpydeclarative_listwrapper.h"
// Create a wrapper from validated objects.
ListWrapper::ListWrapper(PyObject *py_list, QObject *parent)
: QObject(parent), _py_list(py_list)
{
Py_INCREF(_py_list);
}
// Destroy the wrapper.
ListWrapper::~ListWrapper()
{
Py_DECREF(_py_list);
}
// Get a wrapper after validating any list elements.
ListWrapper *ListWrapper::wrapper(PyObject *py_list, QObject *parent)
{
ListWrapper *lw;
// A wrapper might be created every time the property getter is called, so
// try and reuse an existing one.
const QObjectList &children = parent->children();
for (int i = 0; i < children.count(); ++i)
{
lw = qobject_cast<ListWrapper *>(children.at(i));
if (lw && lw->_py_list == py_list)
return lw;
}
// Create a new one.
lw = new ListWrapper(py_list, parent);
for (SIP_SSIZE_T i = 0; i < PyList_GET_SIZE(py_list); ++i)
{
int iserr = 0;
void *cpp = sipForceConvertToType(PyList_GET_ITEM(py_list, i),
sipType_QObject, 0, SIP_NO_CONVERTORS, 0, &iserr);
if (iserr)
{
delete lw;
return 0;
}
lw->qobject_list.append(reinterpret_cast<QObject *>(cpp));
}
return lw;
}
// Append to the list.
void ListWrapper::append(QObject *qobj, QList<QObject *> *qlist, QObject *el)
{
qlist->append(el);
ListWrapper *lw = findWrapper(qobj, qlist);
if (lw)
{
PyObject *el_obj = sipConvertFromType(el, sipType_QObject, 0);
if (!el_obj || PyList_Append(lw->_py_list, el_obj) < 0)
{
PyErr_Print();
}
Py_XDECREF(el_obj);
}
else
{
PyErr_Print();
}
}
// Clear the list.
void ListWrapper::clear(QObject *qobj, QList<QObject *> *qlist)
{
qlist->clear();
ListWrapper *lw = findWrapper(qobj, qlist);
if (!lw || PyList_SetSlice(lw->_py_list, 0, PyList_GET_SIZE(lw->_py_list), NULL) < 0)
PyErr_Print();
}
// Find the wrapper that handles a given C++ list.
ListWrapper *ListWrapper::findWrapper(QObject *qobj, QList<QObject *> *qlist)
{
const QObjectList &children = qobj->children();
for (int i = 0; i < children.count(); ++i)
{
ListWrapper *lw = qobject_cast<ListWrapper *>(children.at(i));
if (lw && &lw->qobject_list == qlist)
return lw;
}
PyErr_SetString(PyExc_AttributeError, "unable to find list wrapper");
return 0;
}
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