qt-creator/doc/example/textfinder/textfinder.cpp

/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact:  Qt Software Information (qt-info@nokia.com)
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** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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#include "textfinder.h"

#include <QtCore/QFile>
#include <QtCore/QTextStream>
#include <QtGui/QMessageBox>

TextFinder::TextFinder(QWidget *parent, Qt::WFlags flags)
    : QWidget(parent, flags)
{
    ui.setupUi(this);
    loadTextFile();
    isFirstTime = true;
}

TextFinder::~TextFinder()
{
}

void TextFinder::loadTextFile()
{
    QFile inputFile(":/input.txt");
    inputFile.open(QIODevice::ReadOnly);

    QTextStream in(&inputFile);
    QString line = in.readAll();
    inputFile.close();

    ui.textEdit->setPlainText(line);
    QTextCursor cursor = ui.textEdit->textCursor();
    cursor.movePosition(QTextCursor::Start, QTextCursor::MoveAnchor, 1);
}

void TextFinder::on_findButton_clicked()
{
    QString searchString = ui.lineEdit->text();
    QTextDocument *document = ui.textEdit->document();

    bool found = false;

    ui.textEdit->find(searchString, QTextDocument::FindWholeWords);
    QTextCursor cursor = ui.textEdit->textCursor();
    if (!cursor.isNull())
        found = true;
}