Qt Reference Documentation

# spreadsheetdelegate.cpp Example File

demos/spreadsheet/spreadsheetdelegate.cpp

     /****************************************************************************
     **
     ** 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 demonstration applications 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.
     **
     **
     **
     **
     **
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #include "spreadsheetdelegate.h"
     #include <QtGui>

     SpreadSheetDelegate::SpreadSheetDelegate(QObject *parent)
             : QItemDelegate(parent) {}

     QWidget *SpreadSheetDelegate::createEditor(QWidget *parent,
                                               const QStyleOptionViewItem &,
                                               const QModelIndex &index) const
     {
         if (index.column() == 1) {
             QDateTimeEdit *editor = new QDateTimeEdit(parent);
             editor->setDisplayFormat("dd/M/yyyy");
             editor->setCalendarPopup(true);
             return editor;
         }

         QLineEdit *editor = new QLineEdit(parent);

         // create a completer with the strings in the column as model
         QStringList allStrings;
         for (int i = 1; i<index.model()->rowCount(); i++) {
             QString strItem(index.model()->data(index.sibling(i, index.column()),
                 Qt::EditRole).toString());

             if (!allStrings.contains(strItem))
                 allStrings.append(strItem);
         }

         QCompleter *autoComplete = new QCompleter(allStrings);
         editor->setCompleter(autoComplete);
         connect(editor, SIGNAL(editingFinished()),
             this, SLOT(commitAndCloseEditor()));
         return editor;
     }

     void SpreadSheetDelegate::commitAndCloseEditor()
     {
         QLineEdit *editor = qobject_cast<QLineEdit *>(sender());
         emit commitData(editor);
         emit closeEditor(editor);
     }

     void SpreadSheetDelegate::setEditorData(QWidget *editor,
         const QModelIndex &index) const
     {
         QLineEdit *edit = qobject_cast<QLineEdit*>(editor);
         if (edit) {
             edit->setText(index.model()->data(index, Qt::EditRole).toString());
         } else {
             QDateTimeEdit *dateEditor = qobject_cast<QDateTimeEdit *>(editor);
             if (dateEditor) {
                 dateEditor->setDate(QDate::fromString(
                 index.model()->data(index, Qt::EditRole).toString(),
                 "d/M/yyyy"));
             }
         }
     }

     void SpreadSheetDelegate::setModelData(QWidget *editor,
         QAbstractItemModel *model, const QModelIndex &index) const
     {
         QLineEdit *edit = qobject_cast<QLineEdit *>(editor);
         if (edit) {
             model->setData(index, edit->text());
         } else {
             QDateTimeEdit *dateEditor = qobject_cast<QDateTimeEdit *>(editor);
             if (dateEditor) {
                 model->setData(index, dateEditor->date().toString("dd/M/yyyy"));
             }
         }
     }