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Diffstat (limited to 'examples/tools/completer/mainwindow.cpp')
| -rw-r--r-- | examples/tools/completer/mainwindow.cpp | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/examples/tools/completer/mainwindow.cpp b/examples/tools/completer/mainwindow.cpp new file mode 100644 index 0000000000..8c848615dc --- /dev/null +++ b/examples/tools/completer/mainwindow.cpp @@ -0,0 +1,281 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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 <QtGui> +#include "fsmodel.h" +#include "mainwindow.h" + +//! [0] +MainWindow::MainWindow(QWidget *parent) + : QMainWindow(parent), completer(0), lineEdit(0) +{ + createMenu(); + + QWidget *centralWidget = new QWidget; + + QLabel *modelLabel = new QLabel; + modelLabel->setText(tr("Model")); + + modelCombo = new QComboBox; + modelCombo->addItem(tr("QFileSytemModel")); + modelCombo->addItem(tr("QFileSytemModel that shows full path")); + modelCombo->addItem(tr("Country list")); + modelCombo->addItem(tr("Word list")); + modelCombo->setCurrentIndex(0); + + 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 *maxVisibleLabel = new QLabel; + maxVisibleLabel->setText(tr("Max Visible Items")); + maxVisibleSpinBox = new QSpinBox; + maxVisibleSpinBox->setRange(3,25); + maxVisibleSpinBox->setValue(10); + + wrapCheckBox = new QCheckBox; + wrapCheckBox->setText(tr("Wrap around completions")); + wrapCheckBox->setChecked(true); +//! [1] + +//! [2] + contentsLabel = new QLabel; + contentsLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); + + connect(modelCombo, SIGNAL(activated(int)), this, SLOT(changeModel())); + connect(modeCombo, SIGNAL(activated(int)), this, SLOT(changeMode(int))); + connect(caseCombo, SIGNAL(activated(int)), this, SLOT(changeCase(int))); + connect(maxVisibleSpinBox, SIGNAL(valueChanged(int)), this, SLOT(changeMaxVisible(int))); +//! [2] + +//! [3] + lineEdit = new QLineEdit; + + QGridLayout *layout = new QGridLayout; + layout->addWidget(modelLabel, 0, 0); layout->addWidget(modelCombo, 0, 1); + layout->addWidget(modeLabel, 1, 0); layout->addWidget(modeCombo, 1, 1); + layout->addWidget(caseLabel, 2, 0); layout->addWidget(caseCombo, 2, 1); + layout->addWidget(maxVisibleLabel, 3, 0); layout->addWidget(maxVisibleSpinBox, 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); + + changeModel(); + + setWindowTitle(tr("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] +QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName) +{ + QFile file(fileName); + if (!file.open(QFile::ReadOnly)) + return new QStringListModel(completer); +//! [5] + +//! [6] +#ifndef QT_NO_CURSOR + QApplication::setOverrideCursor(QCursor(Qt::WaitCursor)); +#endif + QStringList words; + + while (!file.atEnd()) { + QByteArray line = file.readLine(); + if (!line.isEmpty()) + words << line.trimmed(); + } + +#ifndef QT_NO_CURSOR + QApplication::restoreOverrideCursor(); +#endif +//! [6] + +//! [7] + if (!fileName.contains(QLatin1String("countries.txt"))) + return new QStringListModel(words, completer); +//! [7] + + // The last two chars of the countries.txt file indicate the country + // symbol. We put that in column 2 of a standard item model +//! [8] + QStandardItemModel *m = new QStandardItemModel(words.count(), 2, completer); +//! [8] //! [9] + for (int i = 0; i < words.count(); ++i) { + QModelIndex countryIdx = m->index(i, 0); + QModelIndex symbolIdx = m->index(i, 1); + QString country = words[i].mid(0, words[i].length() - 2).trimmed(); + QString symbol = words[i].right(2); + m->setData(countryIdx, country); + m->setData(symbolIdx, symbol); + } + + return m; +} +//! [9] + +//! [10] +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); +} +//! [10] + +void MainWindow::changeCase(int cs) +{ + completer->setCaseSensitivity(cs ? Qt::CaseSensitive : Qt::CaseInsensitive); +} + +//! [11] +void MainWindow::changeModel() +{ + delete completer; + completer = new QCompleter(this); + completer->setMaxVisibleItems(maxVisibleSpinBox->value()); + + switch (modelCombo->currentIndex()) { + default: + case 0: + { // Unsorted QFileSystemModel + QFileSystemModel *fsModel = new QFileSystemModel(completer); + fsModel->setRootPath(""); + completer->setModel(fsModel); + contentsLabel->setText(tr("Enter file path")); + } + break; +//! [11] //! [12] + case 1: + { // FileSystemModel that shows full paths + FileSystemModel *fsModel = new FileSystemModel(completer); + completer->setModel(fsModel); + fsModel->setRootPath(""); + contentsLabel->setText(tr("Enter file path")); + } + break; +//! [12] //! [13] + case 2: + { // Country List + completer->setModel(modelFromFile(":/resources/countries.txt")); + QTreeView *treeView = new QTreeView; + completer->setPopup(treeView); + treeView->setRootIsDecorated(false); + treeView->header()->hide(); + treeView->header()->setStretchLastSection(false); + treeView->header()->setResizeMode(0, QHeaderView::Stretch); + treeView->header()->setResizeMode(1, QHeaderView::ResizeToContents); + contentsLabel->setText(tr("Enter name of your country")); + } + break; +//! [13] //! [14] + case 3: + { // Word list + completer->setModel(modelFromFile(":/resources/wordlist.txt")); + completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel); + contentsLabel->setText(tr("Enter a word")); + } + break; + } + + changeMode(modeCombo->currentIndex()); + changeCase(caseCombo->currentIndex()); + completer->setWrapAround(wrapCheckBox->isChecked()); + lineEdit->setCompleter(completer); + connect(wrapCheckBox, SIGNAL(clicked(bool)), completer, SLOT(setWrapAround(bool))); +} +//! [14] + +//! [15] +void MainWindow::changeMaxVisible(int max) +{ + completer->setMaxVisibleItems(max); +} +//! [15] + +//! [16] +void MainWindow::about() +{ + QMessageBox::about(this, tr("About"), tr("This example demonstrates the " + "different features of the QCompleter class.")); +} +//! [16] |