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assistant.cpp

/*
 * Copyright (C) 2009  Lorenzo Bettini <http://www.lorenzobettini.it>
 * See COPYING file that comes with this distribution
 */


/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the example classes of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file COPYING included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtCore/QByteArray>
#include <QtCore/QDir>
#include <QtCore/QLibraryInfo>
#include <QtCore/QProcess>

#include <QtGui/QMessageBox>

#include <QDebug>

#include "assistant.h"

Assistant::Assistant(const QString &dir)
    : helpFileDir(dir), proc(0)
{
}

Assistant::~Assistant()
{
    if (proc && proc->state() == QProcess::Running) {
        proc->terminate();
        proc->waitForFinished(3000);
    }
    delete proc;
}

bool Assistant::showDocumentation(const QString &page)
{
    if (!startAssistant())
        return false;

    QByteArray ba("SetSource ");
    ba.append("qthelp://net.sf.qsrchilite/doc/");
    
    proc->write(ba + page.toLocal8Bit() + '\0');

    return true;
}

bool Assistant::startAssistant()
{
    if (!proc)
        proc = new QProcess();

    if (proc->state() != QProcess::Running) {
        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

        QStringList args;
        args << QLatin1String("-collectionFile")
            << helpFileDir
            + QLatin1String("/qsource-highlight.qhc")
            << QLatin1String("-enableRemoteControl");

        qDebug() << "assistant args: " << args;

        proc->start(app, args);

        if (!proc->waitForStarted()) {
            // don't show anything: we'll use the custom help browser anyway
            //QMessageBox::critical(0, QObject::tr("QSource-Highlight"),
            //    QObject::tr("Unable to launch Qt Assistant (%1)").arg(app));
            return false;
        }    
    }
    return true;
}


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