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+/****************************************************************************
+**
+** 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 "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;
+
+ QRegExp re("^\\s+");
+ int nonws = re.indexIn(line);
+ int level = 0;
+ if (nonws == -1) {
+ level = 0;
+ } else {
+ if (line.startsWith("\t")) {
+ level = re.cap(0).length();
+ } else {
+ level = re.cap(0).length()/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));
+}
+
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