5635823e17
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I311e001373776812699d6efc045b5f742890c689 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
282 lines
9.1 KiB
C++
282 lines
9.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include "fsmodel.h"
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#include "mainwindow.h"
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//! [0]
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MainWindow::MainWindow(QWidget *parent)
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: QMainWindow(parent), completer(0), lineEdit(0)
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{
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createMenu();
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QWidget *centralWidget = new QWidget;
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QLabel *modelLabel = new QLabel;
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modelLabel->setText(tr("Model"));
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modelCombo = new QComboBox;
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modelCombo->addItem(tr("QFileSytemModel"));
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modelCombo->addItem(tr("QFileSytemModel that shows full path"));
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modelCombo->addItem(tr("Country list"));
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modelCombo->addItem(tr("Word list"));
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modelCombo->setCurrentIndex(0);
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QLabel *modeLabel = new QLabel;
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modeLabel->setText(tr("Completion Mode"));
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modeCombo = new QComboBox;
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modeCombo->addItem(tr("Inline"));
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modeCombo->addItem(tr("Filtered Popup"));
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modeCombo->addItem(tr("Unfiltered Popup"));
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modeCombo->setCurrentIndex(1);
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QLabel *caseLabel = new QLabel;
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caseLabel->setText(tr("Case Sensitivity"));
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caseCombo = new QComboBox;
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caseCombo->addItem(tr("Case Insensitive"));
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caseCombo->addItem(tr("Case Sensitive"));
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caseCombo->setCurrentIndex(0);
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//! [0]
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//! [1]
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QLabel *maxVisibleLabel = new QLabel;
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maxVisibleLabel->setText(tr("Max Visible Items"));
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maxVisibleSpinBox = new QSpinBox;
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maxVisibleSpinBox->setRange(3,25);
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maxVisibleSpinBox->setValue(10);
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wrapCheckBox = new QCheckBox;
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wrapCheckBox->setText(tr("Wrap around completions"));
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wrapCheckBox->setChecked(true);
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//! [1]
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//! [2]
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contentsLabel = new QLabel;
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contentsLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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connect(modelCombo, SIGNAL(activated(int)), this, SLOT(changeModel()));
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connect(modeCombo, SIGNAL(activated(int)), this, SLOT(changeMode(int)));
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connect(caseCombo, SIGNAL(activated(int)), this, SLOT(changeCase(int)));
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connect(maxVisibleSpinBox, SIGNAL(valueChanged(int)), this, SLOT(changeMaxVisible(int)));
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//! [2]
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//! [3]
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lineEdit = new QLineEdit;
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QGridLayout *layout = new QGridLayout;
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layout->addWidget(modelLabel, 0, 0); layout->addWidget(modelCombo, 0, 1);
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layout->addWidget(modeLabel, 1, 0); layout->addWidget(modeCombo, 1, 1);
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layout->addWidget(caseLabel, 2, 0); layout->addWidget(caseCombo, 2, 1);
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layout->addWidget(maxVisibleLabel, 3, 0); layout->addWidget(maxVisibleSpinBox, 3, 1);
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layout->addWidget(wrapCheckBox, 4, 0);
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layout->addWidget(contentsLabel, 5, 0, 1, 2);
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layout->addWidget(lineEdit, 6, 0, 1, 2);
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centralWidget->setLayout(layout);
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setCentralWidget(centralWidget);
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changeModel();
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setWindowTitle(tr("Completer"));
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lineEdit->setFocus();
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}
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//! [3]
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//! [4]
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void MainWindow::createMenu()
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{
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QAction *exitAction = new QAction(tr("Exit"), this);
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QAction *aboutAct = new QAction(tr("About"), this);
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QAction *aboutQtAct = new QAction(tr("About Qt"), this);
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connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
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connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
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connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
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QMenu* fileMenu = menuBar()->addMenu(tr("File"));
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fileMenu->addAction(exitAction);
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QMenu* helpMenu = menuBar()->addMenu(tr("About"));
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helpMenu->addAction(aboutAct);
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helpMenu->addAction(aboutQtAct);
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}
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//! [4]
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//! [5]
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QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName)
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{
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QFile file(fileName);
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if (!file.open(QFile::ReadOnly))
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return new QStringListModel(completer);
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//! [5]
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//! [6]
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#ifndef QT_NO_CURSOR
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QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
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#endif
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QStringList words;
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while (!file.atEnd()) {
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QByteArray line = file.readLine();
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if (!line.isEmpty())
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words << line.trimmed();
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}
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#ifndef QT_NO_CURSOR
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QApplication::restoreOverrideCursor();
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#endif
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//! [6]
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//! [7]
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if (!fileName.contains(QLatin1String("countries.txt")))
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return new QStringListModel(words, completer);
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//! [7]
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// The last two chars of the countries.txt file indicate the country
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// symbol. We put that in column 2 of a standard item model
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//! [8]
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QStandardItemModel *m = new QStandardItemModel(words.count(), 2, completer);
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//! [8] //! [9]
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for (int i = 0; i < words.count(); ++i) {
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QModelIndex countryIdx = m->index(i, 0);
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QModelIndex symbolIdx = m->index(i, 1);
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QString country = words[i].mid(0, words[i].length() - 2).trimmed();
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QString symbol = words[i].right(2);
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m->setData(countryIdx, country);
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m->setData(symbolIdx, symbol);
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}
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return m;
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}
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//! [9]
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//! [10]
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void MainWindow::changeMode(int index)
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{
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QCompleter::CompletionMode mode;
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if (index == 0)
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mode = QCompleter::InlineCompletion;
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else if (index == 1)
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mode = QCompleter::PopupCompletion;
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else
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mode = QCompleter::UnfilteredPopupCompletion;
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completer->setCompletionMode(mode);
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}
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//! [10]
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void MainWindow::changeCase(int cs)
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{
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completer->setCaseSensitivity(cs ? Qt::CaseSensitive : Qt::CaseInsensitive);
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}
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//! [11]
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void MainWindow::changeModel()
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{
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delete completer;
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completer = new QCompleter(this);
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completer->setMaxVisibleItems(maxVisibleSpinBox->value());
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switch (modelCombo->currentIndex()) {
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default:
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case 0:
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{ // Unsorted QFileSystemModel
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QFileSystemModel *fsModel = new QFileSystemModel(completer);
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fsModel->setRootPath("");
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completer->setModel(fsModel);
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contentsLabel->setText(tr("Enter file path"));
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}
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break;
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//! [11] //! [12]
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case 1:
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{ // FileSystemModel that shows full paths
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FileSystemModel *fsModel = new FileSystemModel(completer);
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completer->setModel(fsModel);
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fsModel->setRootPath("");
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contentsLabel->setText(tr("Enter file path"));
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}
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break;
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//! [12] //! [13]
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case 2:
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{ // Country List
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completer->setModel(modelFromFile(":/resources/countries.txt"));
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QTreeView *treeView = new QTreeView;
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completer->setPopup(treeView);
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treeView->setRootIsDecorated(false);
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treeView->header()->hide();
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treeView->header()->setStretchLastSection(false);
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treeView->header()->setResizeMode(0, QHeaderView::Stretch);
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treeView->header()->setResizeMode(1, QHeaderView::ResizeToContents);
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contentsLabel->setText(tr("Enter name of your country"));
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}
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break;
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//! [13] //! [14]
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case 3:
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{ // Word list
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completer->setModel(modelFromFile(":/resources/wordlist.txt"));
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completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);
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contentsLabel->setText(tr("Enter a word"));
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}
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break;
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}
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changeMode(modeCombo->currentIndex());
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changeCase(caseCombo->currentIndex());
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completer->setWrapAround(wrapCheckBox->isChecked());
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lineEdit->setCompleter(completer);
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connect(wrapCheckBox, SIGNAL(clicked(bool)), completer, SLOT(setWrapAround(bool)));
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}
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//! [14]
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//! [15]
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void MainWindow::changeMaxVisible(int max)
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{
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completer->setMaxVisibleItems(max);
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}
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//! [15]
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//! [16]
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void MainWindow::about()
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{
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QMessageBox::about(this, tr("About"), tr("This example demonstrates the "
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"different features of the QCompleter class."));
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}
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//! [16]
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