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<title>Qt 4.2: window.cpp Example File (itemviews/basicsortfiltermodel/window.cpp)</title>
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<pre> /****************************************************************************
**
** Copyright (C) 2006-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
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** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
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#include <QtGui>
#include "window.h"
Window::Window()
{
proxyModel = new QSortFilterProxyModel;
proxyModel->setDynamicSortFilter(true);
sourceGroupBox = new QGroupBox(tr("Original Model"));
proxyGroupBox = new QGroupBox(tr("Sorted/Filtered Model"));
sourceView = new QTreeView;
sourceView->setRootIsDecorated(false);
sourceView->setAlternatingRowColors(true);
proxyView = new QTreeView;
proxyView->setRootIsDecorated(false);
proxyView->setAlternatingRowColors(true);
proxyView->setModel(proxyModel);
proxyView->setSortingEnabled(true);
sortCaseSensitivityCheckBox = new QCheckBox(tr("Case sensitive sorting"));
filterCaseSensitivityCheckBox = new QCheckBox(tr("Case sensitive filter"));
filterPatternLineEdit = new QLineEdit;
filterPatternLabel = new QLabel(tr("&Filter pattern:"));
filterPatternLabel->setBuddy(filterPatternLineEdit);
filterSyntaxComboBox = new QComboBox;
filterSyntaxComboBox->addItem(tr("Regular expression"), QRegExp::RegExp);
filterSyntaxComboBox->addItem(tr("Wildcard"), QRegExp::Wildcard);
filterSyntaxComboBox->addItem(tr("Fixed string"), QRegExp::FixedString);
filterSyntaxLabel = new QLabel(tr("Filter &syntax:"));
filterSyntaxLabel->setBuddy(filterSyntaxComboBox);
filterColumnComboBox = new QComboBox;
filterColumnComboBox->addItem(tr("Subject"));
filterColumnComboBox->addItem(tr("Sender"));
filterColumnComboBox->addItem(tr("Date"));
filterColumnLabel = new QLabel(tr("Filter &column:"));
filterColumnLabel->setBuddy(filterColumnComboBox);
connect(filterPatternLineEdit, SIGNAL(textChanged(const QString &)),
this, SLOT(filterRegExpChanged()));
connect(filterSyntaxComboBox, SIGNAL(currentIndexChanged(int)),
this, SLOT(filterRegExpChanged()));
connect(filterColumnComboBox, SIGNAL(currentIndexChanged(int)),
this, SLOT(filterColumnChanged()));
connect(filterCaseSensitivityCheckBox, SIGNAL(toggled(bool)),
this, SLOT(filterRegExpChanged()));
connect(sortCaseSensitivityCheckBox, SIGNAL(toggled(bool)),
this, SLOT(sortChanged()));
QHBoxLayout *sourceLayout = new QHBoxLayout;
sourceLayout->addWidget(sourceView);
sourceGroupBox->setLayout(sourceLayout);
QGridLayout *proxyLayout = new QGridLayout;
proxyLayout->addWidget(proxyView, 0, 0, 1, 3);
proxyLayout->addWidget(filterPatternLabel, 1, 0);
proxyLayout->addWidget(filterPatternLineEdit, 1, 1, 1, 2);
proxyLayout->addWidget(filterSyntaxLabel, 2, 0);
proxyLayout->addWidget(filterSyntaxComboBox, 2, 1, 1, 2);
proxyLayout->addWidget(filterColumnLabel, 3, 0);
proxyLayout->addWidget(filterColumnComboBox, 3, 1, 1, 2);
proxyLayout->addWidget(filterCaseSensitivityCheckBox, 4, 0, 1, 2);
proxyLayout->addWidget(sortCaseSensitivityCheckBox, 4, 2);
proxyGroupBox->setLayout(proxyLayout);
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(sourceGroupBox);
mainLayout->addWidget(proxyGroupBox);
setLayout(mainLayout);
setWindowTitle(tr("Basic Sort/Filter Model"));
resize(500, 450);
proxyView->sortByColumn(1, Qt::AscendingOrder);
filterColumnComboBox->setCurrentIndex(1);
filterPatternLineEdit->setText("Andy|Grace");
filterCaseSensitivityCheckBox->setChecked(true);
sortCaseSensitivityCheckBox->setChecked(true);
}
void Window::setSourceModel(QAbstractItemModel *model)
{
proxyModel->setSourceModel(model);
sourceView->setModel(model);
}
void Window::filterRegExpChanged()
{
QRegExp::PatternSyntax syntax =
QRegExp::PatternSyntax(filterSyntaxComboBox->itemData(
filterSyntaxComboBox->currentIndex()).toInt());
Qt::CaseSensitivity caseSensitivity =
filterCaseSensitivityCheckBox->isChecked() ? Qt::CaseSensitive
: Qt::CaseInsensitive;
QRegExp regExp(filterPatternLineEdit->text(), caseSensitivity, syntax);
proxyModel->setFilterRegExp(regExp);
}
void Window::filterColumnChanged()
{
proxyModel->setFilterKeyColumn(filterColumnComboBox->currentIndex());
}
void Window::sortChanged()
{
proxyModel->setSortCaseSensitivity(
sortCaseSensitivityCheckBox->isChecked() ? Qt::CaseSensitive
: Qt::CaseInsensitive);
}</pre>
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