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#include <QtGui>

#include "mainwindow.h"

#include "textedit.h"

//! [0]

MainWindow::MainWindow(QWidget *parent)

    : QMainWindow(parent), completer(0)

{

    createMenu();

    completingTextEdit = new TextEdit;

    completer = new QCompleter(this);

    completer->setModel(modelFromFile(":/resources/wordlist.txt"));

    completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);

    completer->setCaseSensitivity(Qt::CaseInsensitive);

    completer->setWrapAround(false);

    completingTextEdit->setCompleter(completer);

    setCentralWidget(completingTextEdit);

    resize(500, 300);

    setWindowTitle(tr("Completer"));

}

//! [0]

//! [1]

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);

}

//! [1]

//! [2]

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;

    while (!file.atEnd()) {

        QByteArray line = file.readLine();

        if (!line.isEmpty())

            words << line.trimmed();

    }

#ifndef QT_NO_CURSOR

    QApplication::restoreOverrideCursor();

#endif

    return new QStringListModel(words, completer);

}

//! [2]

//! [3]

void MainWindow::about()

{

    QMessageBox::about(this, tr("About"), tr("This example demonstrates the "

        "different features of the QCompleter class."));

}

//! [3]