| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the QtSql module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** This file may be used under the terms of the GNU Lesser General Public |
| ** License version 2.1 as published by the Free Software Foundation and |
| ** appearing in the file LICENSE.LGPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU Lesser |
| ** General Public License version 2.1 requirements will be met: |
| ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
| ** |
| ** In addition, as a special exception, Nokia gives you certain additional |
| ** rights. These rights are described in the Nokia Qt LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
| ** Public License version 3.0 requirements will be met: |
| ** http://www.gnu.org/copyleft/gpl.html. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QSQLRELATIONALDELEGATE_H |
| #define QSQLRELATIONALDELEGATE_H |
| |
| #ifdef QT_GUI_LIB |
| |
| #include <QtGui/qitemdelegate.h> |
| #include <QtGui/qlistview.h> |
| #include <QtGui/qcombobox.h> |
| #include <QtSql/qsqlrelationaltablemodel.h> |
| |
| QT_BEGIN_HEADER |
| |
| QT_BEGIN_NAMESPACE |
| |
| QT_MODULE(Sql) |
| |
| class QSqlRelationalDelegate: public QItemDelegate |
| { |
| public: |
| |
| explicit QSqlRelationalDelegate(QObject *aParent = 0) |
| : QItemDelegate(aParent) |
| {} |
| |
| ~QSqlRelationalDelegate() |
| {} |
| |
| QWidget *createEditor(QWidget *aParent, |
| const QStyleOptionViewItem &option, |
| const QModelIndex &index) const |
| { |
| const QSqlRelationalTableModel *sqlModel = qobject_cast<const QSqlRelationalTableModel *>(index.model()); |
| QSqlTableModel *childModel = sqlModel ? sqlModel->relationModel(index.column()) : 0; |
| if (!childModel) |
| return QItemDelegate::createEditor(aParent, option, index); |
| |
| QComboBox *combo = new QComboBox(aParent); |
| combo->setModel(childModel); |
| combo->setModelColumn(childModel->fieldIndex(sqlModel->relation(index.column()).displayColumn())); |
| combo->installEventFilter(const_cast<QSqlRelationalDelegate *>(this)); |
| |
| return combo; |
| } |
| |
| void setEditorData(QWidget *editor, const QModelIndex &index) const |
| { |
| const QSqlRelationalTableModel *sqlModel = qobject_cast<const QSqlRelationalTableModel *>(index.model()); |
| QComboBox *combo = qobject_cast<QComboBox *>(editor); |
| if (!sqlModel || !combo) { |
| QItemDelegate::setEditorData(editor, index); |
| return; |
| } |
| combo->setCurrentIndex(combo->findText(sqlModel->data(index).toString())); |
| } |
| |
| void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const |
| { |
| if (!index.isValid()) |
| return; |
| |
| QSqlRelationalTableModel *sqlModel = qobject_cast<QSqlRelationalTableModel *>(model); |
| QSqlTableModel *childModel = sqlModel ? sqlModel->relationModel(index.column()) : 0; |
| QComboBox *combo = qobject_cast<QComboBox *>(editor); |
| if (!sqlModel || !childModel || !combo) { |
| QItemDelegate::setModelData(editor, model, index); |
| return; |
| } |
| |
| int currentItem = combo->currentIndex(); |
| int childColIndex = childModel->fieldIndex(sqlModel->relation(index.column()).displayColumn()); |
| int childEditIndex = childModel->fieldIndex(sqlModel->relation(index.column()).indexColumn()); |
| sqlModel->setData(index, |
| childModel->data(childModel->index(currentItem, childColIndex), Qt::DisplayRole), |
| Qt::DisplayRole); |
| sqlModel->setData(index, |
| childModel->data(childModel->index(currentItem, childEditIndex), Qt::EditRole), |
| Qt::EditRole); |
| } |
| |
| }; |
| |
| QT_END_NAMESPACE |
| |
| QT_END_HEADER |
| |
| #endif // QT_GUI_LIB |
| |
| #endif // QSQLRELATIONALDELEGATE_H |