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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the config.tests 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 Digia Plc 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 "filereader.h"


FileReader::FileReader(QWidget *parent)
    : QWidget(parent)
{
    textEdit = new QTextEdit;

    taxFileButton = new QPushButton("Tax File");
    accountFileButton = new QPushButton("Accounts File");
    reportFileButton = new QPushButton("Report File");

//! [0]
    signalMapper = new QSignalMapper(this);
    signalMapper->setMapping(taxFileButton, QString("taxfile.txt"));
    signalMapper->setMapping(accountFileButton, QString("accountsfile.txt"));
    signalMapper->setMapping(reportFileButton, QString("reportfile.txt"));

    connect(taxFileButton, &QPushButton::clicked,
        signalMapper, &QSignalMapper::map);
    connect(accountFileButton, &QPushButton::clicked,
        signalMapper, &QSignalMapper::map);
    connect(reportFileButton, &QPushButton::clicked,
        signalMapper, &QSignalMapper::map);
//! [0]

//! [1]
    connect(signalMapper, SIGNAL(mapped(QString)),
        this, SLOT(readFile(QString)));
//! [1]

/*
//! [2]
    //slower due to signature normalization at runtime
    
    connect(signalMapper, SIGNAL(mapped(const QString &)),
        this, SLOT(readFile(const QString &)));
//! [2]
*/
    QHBoxLayout *buttonLayout = new QHBoxLayout;
    buttonLayout->addWidget(taxFileButton);
    buttonLayout->addWidget(accountFileButton);
    buttonLayout->addWidget(reportFileButton);

    QVBoxLayout *mainLayout = new QVBoxLayout;
    mainLayout->addWidget(textEdit);
    mainLayout->addLayout(buttonLayout);

    setLayout(mainLayout);
}

void FileReader::readFile(const QString &filename)
{
    QFile file(filename);
    
    if (!file.open(QIODevice::ReadOnly)) {
        QMessageBox::information(this, tr("Unable to open file"),
            file.errorString());
        return;
    }


    QTextStream in(&file);
    textEdit->setPlainText(in.readAll());
}