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#include <QtCore/QDir>

#include <QtCore/QProcess>

#include <QtCore/QTextStream>

#include <QtCore/QLibraryInfo>

#include <QtGui/QMessageBox>

#include "remotecontrol.h"

RemoteControl::RemoteControl(QWidget *parent, Qt::WFlags flags)

        : QMainWindow(parent, flags)

{

    ui.setupUi(this);

    connect(ui.indexLineEdit, SIGNAL(returnPressed()),

        this, SLOT(on_indexButton_clicked()));

    connect(ui.identifierLineEdit, SIGNAL(returnPressed()),

        this, SLOT(on_identifierButton_clicked()));

    connect(ui.urlLineEdit, SIGNAL(returnPressed()),

        this, SLOT(on_urlButton_clicked()));

    QString rc;

    QTextStream(&rc) << QLatin1String("qthelp://com.trolltech.qt.")

                     << (QT_VERSION >> 16) << ((QT_VERSION >> 8) & 0xFF)

                     << (QT_VERSION & 0xFF)

                     << QLatin1String("/qdoc/index.html");

    ui.startUrlLineEdit->setText(rc);

    process = new QProcess(this);

    connect(process, SIGNAL(finished(int,QProcess::ExitStatus)),

        this, SLOT(helpViewerClosed()));

}

RemoteControl::~RemoteControl()

{

    if (process->state() == QProcess::Running) {

        process->terminate();

        process->waitForFinished(3000);

    }

}

void RemoteControl::on_actionQuit_triggered()

{

    close();

}

void RemoteControl::on_launchButton_clicked()

{

    if (process->state() == QProcess::Running)

        return;

    QString app = QLibraryInfo::location(QLibraryInfo::BinariesPath) + QDir::separator();

#if !defined(Q_OS_MAC)

    app += QLatin1String("assistant");

#else

    app += QLatin1String("Assistant.app/Contents/MacOS/Assistant");

#endif

    ui.contentsCheckBox->setChecked(true);

    ui.indexCheckBox->setChecked(true);

    ui.bookmarksCheckBox->setChecked(true);

    QStringList args;

    args << QLatin1String("-enableRemoteControl");

    process->start(app, args);

    if (!process->waitForStarted()) {

        QMessageBox::critical(this, tr("Remote Control"),

            tr("Could not start Qt Assistant from %1.").arg(app));

        return;

    }

    if (!ui.startUrlLineEdit->text().isEmpty())

        sendCommand(QLatin1String("SetSource ")

            + ui.startUrlLineEdit->text());

    ui.launchButton->setEnabled(false);

    ui.startUrlLineEdit->setEnabled(false);

    ui.actionGroupBox->setEnabled(true);

}

void RemoteControl::sendCommand(const QString &cmd)

{

    if (process->state() != QProcess::Running)

        return;

    process->write(cmd.toLocal8Bit() + '\0');

}

void RemoteControl::on_indexButton_clicked()

{

    sendCommand(QLatin1String("ActivateKeyword ")

        + ui.indexLineEdit->text());

}

void RemoteControl::on_identifierButton_clicked()

{

    sendCommand(QLatin1String("ActivateIdentifier ")

        + ui.identifierLineEdit->text());

}

void RemoteControl::on_urlButton_clicked()

{

    sendCommand(QLatin1String("SetSource ")

        + ui.urlLineEdit->text());

}

void RemoteControl::on_syncContentsButton_clicked()

{

    sendCommand(QLatin1String("SyncContents"));

}

void RemoteControl::on_contentsCheckBox_toggled(bool checked)

{

    sendCommand(checked ?

        QLatin1String("Show Contents") : QLatin1String("Hide Contents"));

}

void RemoteControl::on_indexCheckBox_toggled(bool checked)

{

    sendCommand(checked ?

        QLatin1String("Show Index") : QLatin1String("Hide Index"));

}

void RemoteControl::on_bookmarksCheckBox_toggled(bool checked)

{

    sendCommand(checked ?

        QLatin1String("Show Bookmarks") : QLatin1String("Hide Bookmarks"));

}

void RemoteControl::helpViewerClosed()

{

    ui.launchButton->setEnabled(true);

    ui.startUrlLineEdit->setEnabled(true);

    ui.actionGroupBox->setEnabled(false);

}