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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include "window.h"
static inline QColor textColor(const QPalette &palette)
{
return palette.color(QPalette::Active, QPalette::Text);
}
static void setTextColor(QWidget *w, const QColor &c)
{
auto palette = w->palette();
if (textColor(palette) != c) {
palette.setColor(QPalette::Active, QPalette::Text, c);
w->setPalette(palette);
}
}
Window::Window()
{
proxyModel = new QSortFilterProxyModel;
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;
filterPatternLineEdit->setClearButtonEnabled(true);
filterPatternLabel = new QLabel(tr("&Filter pattern:"));
filterPatternLabel->setBuddy(filterPatternLineEdit);
filterSyntaxComboBox = new QComboBox;
filterSyntaxComboBox->addItem(tr("Regular expression"), RegularExpression);
filterSyntaxComboBox->addItem(tr("Wildcard"), Wildcard);
filterSyntaxComboBox->addItem(tr("Fixed string"), 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, &QLineEdit::textChanged,
this, &Window::filterRegularExpressionChanged);
connect(filterSyntaxComboBox, &QComboBox::currentIndexChanged,
this, &Window::filterRegularExpressionChanged);
connect(filterColumnComboBox, &QComboBox::currentIndexChanged,
this, &Window::filterColumnChanged);
connect(filterCaseSensitivityCheckBox, &QAbstractButton::toggled,
this, &Window::filterRegularExpressionChanged);
connect(sortCaseSensitivityCheckBox, &QAbstractButton::toggled,
this, &Window::sortChanged);
sourceGroupBox = new QGroupBox(tr("Original Model"));
proxyGroupBox = new QGroupBox(tr("Sorted/Filtered Model"));
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::filterRegularExpressionChanged()
{
Syntax s = Syntax(filterSyntaxComboBox->itemData(filterSyntaxComboBox->currentIndex()).toInt());
QString pattern = filterPatternLineEdit->text();
switch (s) {
case Wildcard:
pattern = QRegularExpression::wildcardToRegularExpression(pattern);
break;
case FixedString:
pattern = QRegularExpression::escape(pattern);
break;
default:
break;
}
QRegularExpression::PatternOptions options = QRegularExpression::NoPatternOption;
if (!filterCaseSensitivityCheckBox->isChecked())
options |= QRegularExpression::CaseInsensitiveOption;
QRegularExpression regularExpression(pattern, options);
if (regularExpression.isValid()) {
filterPatternLineEdit->setToolTip(QString());
proxyModel->setFilterRegularExpression(regularExpression);
setTextColor(filterPatternLineEdit, textColor(style()->standardPalette()));
} else {
filterPatternLineEdit->setToolTip(regularExpression.errorString());
proxyModel->setFilterRegularExpression(QRegularExpression());
setTextColor(filterPatternLineEdit, Qt::red);
}
}
void Window::filterColumnChanged()
{
proxyModel->setFilterKeyColumn(filterColumnComboBox->currentIndex());
}
void Window::sortChanged()
{
proxyModel->setSortCaseSensitivity(
sortCaseSensitivityCheckBox->isChecked() ? Qt::CaseSensitive
: Qt::CaseInsensitive);
}
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