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#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, SIGNAL(clicked()),

        signalMapper, SLOT (map()));

    connect(accountFileButton, SIGNAL(clicked()),

        signalMapper, SLOT (map()));

    connect(reportFileButton, SIGNAL(clicked()),

        signalMapper, SLOT (map()));

//! [0]

//! [1]

    connect(signalMapper, SIGNAL(mapped(const QString &)),

        this, SLOT(readFile(const QString &)));

//! [1]

    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());

}