2d81968c3b
Update the treemodelcompleter example to use the new QRegularExpression class in place of the deprecated QRegExp. Change-Id: I9fa91ca6e847603de37019e4ca86fc69a51a3772 Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
258 lines
8.7 KiB
C++
258 lines
8.7 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, you may use this file under the terms of the BSD license
|
|
** as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of The Qt Company Ltd nor the names of its
|
|
** contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include <QtWidgets>
|
|
#include "treemodelcompleter.h"
|
|
#include "mainwindow.h"
|
|
|
|
//! [0]
|
|
MainWindow::MainWindow(QWidget *parent)
|
|
: QMainWindow(parent), completer(0), lineEdit(0)
|
|
{
|
|
createMenu();
|
|
|
|
completer = new TreeModelCompleter(this);
|
|
completer->setModel(modelFromFile(":/resources/treemodel.txt"));
|
|
completer->setSeparator(QLatin1String("."));
|
|
QObject::connect(completer, SIGNAL(highlighted(QModelIndex)),
|
|
this, SLOT(highlight(QModelIndex)));
|
|
|
|
QWidget *centralWidget = new QWidget;
|
|
|
|
QLabel *modelLabel = new QLabel;
|
|
modelLabel->setText(tr("Tree Model<br>(Double click items to edit)"));
|
|
|
|
QLabel *modeLabel = new QLabel;
|
|
modeLabel->setText(tr("Completion Mode"));
|
|
modeCombo = new QComboBox;
|
|
modeCombo->addItem(tr("Inline"));
|
|
modeCombo->addItem(tr("Filtered Popup"));
|
|
modeCombo->addItem(tr("Unfiltered Popup"));
|
|
modeCombo->setCurrentIndex(1);
|
|
|
|
QLabel *caseLabel = new QLabel;
|
|
caseLabel->setText(tr("Case Sensitivity"));
|
|
caseCombo = new QComboBox;
|
|
caseCombo->addItem(tr("Case Insensitive"));
|
|
caseCombo->addItem(tr("Case Sensitive"));
|
|
caseCombo->setCurrentIndex(0);
|
|
//! [0]
|
|
|
|
//! [1]
|
|
QLabel *separatorLabel = new QLabel;
|
|
separatorLabel->setText(tr("Tree Separator"));
|
|
|
|
QLineEdit *separatorLineEdit = new QLineEdit;
|
|
separatorLineEdit->setText(completer->separator());
|
|
connect(separatorLineEdit, SIGNAL(textChanged(QString)),
|
|
completer, SLOT(setSeparator(QString)));
|
|
|
|
QCheckBox *wrapCheckBox = new QCheckBox;
|
|
wrapCheckBox->setText(tr("Wrap around completions"));
|
|
wrapCheckBox->setChecked(completer->wrapAround());
|
|
connect(wrapCheckBox, SIGNAL(clicked(bool)), completer, SLOT(setWrapAround(bool)));
|
|
|
|
contentsLabel = new QLabel;
|
|
contentsLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
|
|
connect(separatorLineEdit, SIGNAL(textChanged(QString)),
|
|
this, SLOT(updateContentsLabel(QString)));
|
|
|
|
treeView = new QTreeView;
|
|
treeView->setModel(completer->model());
|
|
treeView->header()->hide();
|
|
treeView->expandAll();
|
|
//! [1]
|
|
|
|
//! [2]
|
|
connect(modeCombo, SIGNAL(activated(int)), this, SLOT(changeMode(int)));
|
|
connect(caseCombo, SIGNAL(activated(int)), this, SLOT(changeCase(int)));
|
|
|
|
lineEdit = new QLineEdit;
|
|
lineEdit->setCompleter(completer);
|
|
//! [2]
|
|
|
|
//! [3]
|
|
QGridLayout *layout = new QGridLayout;
|
|
layout->addWidget(modelLabel, 0, 0); layout->addWidget(treeView, 0, 1);
|
|
layout->addWidget(modeLabel, 1, 0); layout->addWidget(modeCombo, 1, 1);
|
|
layout->addWidget(caseLabel, 2, 0); layout->addWidget(caseCombo, 2, 1);
|
|
layout->addWidget(separatorLabel, 3, 0); layout->addWidget(separatorLineEdit, 3, 1);
|
|
layout->addWidget(wrapCheckBox, 4, 0);
|
|
layout->addWidget(contentsLabel, 5, 0, 1, 2);
|
|
layout->addWidget(lineEdit, 6, 0, 1, 2);
|
|
centralWidget->setLayout(layout);
|
|
setCentralWidget(centralWidget);
|
|
|
|
changeCase(caseCombo->currentIndex());
|
|
changeMode(modeCombo->currentIndex());
|
|
|
|
setWindowTitle(tr("Tree Model Completer"));
|
|
lineEdit->setFocus();
|
|
}
|
|
//! [3]
|
|
|
|
//! [4]
|
|
void MainWindow::createMenu()
|
|
{
|
|
QAction *exitAction = new QAction(tr("Exit"), this);
|
|
QAction *aboutAct = new QAction(tr("About"), this);
|
|
QAction *aboutQtAct = new QAction(tr("About Qt"), this);
|
|
|
|
connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
|
|
connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
|
|
connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
|
|
|
|
QMenu* fileMenu = menuBar()->addMenu(tr("File"));
|
|
fileMenu->addAction(exitAction);
|
|
|
|
QMenu* helpMenu = menuBar()->addMenu(tr("About"));
|
|
helpMenu->addAction(aboutAct);
|
|
helpMenu->addAction(aboutQtAct);
|
|
}
|
|
//! [4]
|
|
|
|
//! [5]
|
|
void MainWindow::changeMode(int index)
|
|
{
|
|
QCompleter::CompletionMode mode;
|
|
if (index == 0)
|
|
mode = QCompleter::InlineCompletion;
|
|
else if (index == 1)
|
|
mode = QCompleter::PopupCompletion;
|
|
else
|
|
mode = QCompleter::UnfilteredPopupCompletion;
|
|
|
|
completer->setCompletionMode(mode);
|
|
}
|
|
//! [5]
|
|
|
|
QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName)
|
|
{
|
|
QFile file(fileName);
|
|
if (!file.open(QFile::ReadOnly))
|
|
return new QStringListModel(completer);
|
|
|
|
#ifndef QT_NO_CURSOR
|
|
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
|
|
#endif
|
|
QStringList words;
|
|
|
|
QStandardItemModel *model = new QStandardItemModel(completer);
|
|
QVector<QStandardItem *> parents(10);
|
|
parents[0] = model->invisibleRootItem();
|
|
|
|
while (!file.atEnd()) {
|
|
QString line = file.readLine();
|
|
QString trimmedLine = line.trimmed();
|
|
if (line.isEmpty() || trimmedLine.isEmpty())
|
|
continue;
|
|
|
|
QRegularExpression re("^\\s+");
|
|
QRegularExpressionMatch match = re.match(line);
|
|
int nonws = match.capturedStart();
|
|
int level = 0;
|
|
if (nonws == -1) {
|
|
level = 0;
|
|
} else {
|
|
if (line.startsWith("\t")) {
|
|
level = match.capturedLength();
|
|
} else {
|
|
level = match.capturedLength()/4;
|
|
}
|
|
}
|
|
|
|
if (level+1 >= parents.size())
|
|
parents.resize(parents.size()*2);
|
|
|
|
QStandardItem *item = new QStandardItem;
|
|
item->setText(trimmedLine);
|
|
parents[level]->appendRow(item);
|
|
parents[level+1] = item;
|
|
}
|
|
|
|
#ifndef QT_NO_CURSOR
|
|
QApplication::restoreOverrideCursor();
|
|
#endif
|
|
|
|
return model;
|
|
}
|
|
|
|
void MainWindow::highlight(const QModelIndex &index)
|
|
{
|
|
QAbstractItemModel *completionModel = completer->completionModel();
|
|
QAbstractProxyModel *proxy = qobject_cast<QAbstractProxyModel *>(completionModel);
|
|
if (!proxy)
|
|
return;
|
|
QModelIndex sourceIndex = proxy->mapToSource(index);
|
|
treeView->selectionModel()->select(sourceIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
|
|
treeView->scrollTo(index);
|
|
}
|
|
|
|
//! [6]
|
|
void MainWindow::about()
|
|
{
|
|
QMessageBox::about(this, tr("About"), tr("This example demonstrates how "
|
|
"to use a QCompleter with a custom tree model."));
|
|
}
|
|
//! [6]
|
|
|
|
//! [7]
|
|
void MainWindow::changeCase(int cs)
|
|
{
|
|
completer->setCaseSensitivity(cs ? Qt::CaseSensitive : Qt::CaseInsensitive);
|
|
}
|
|
//! [7]
|
|
|
|
void MainWindow::updateContentsLabel(const QString& sep)
|
|
{
|
|
contentsLabel->setText(tr("Type path from model above with items at each level separated by a '%1'").arg(sep));
|
|
}
|
|
|