282 lines
9.2 KiB
C++
282 lines
9.2 KiB
C++
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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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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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtGui>
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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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