/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:BSD$+
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** You may use this file under the terms of the BSD license as follows:+
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**+
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** "Redistribution and use in source and binary forms, with or without+
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** modification, are permitted provided that the following conditions are+
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** met:+
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**   * Redistributions of source code must retain the above copyright+
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**     notice, this list of conditions and the following disclaimer.+
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**   * Redistributions in binary form must reproduce the above copyright+
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**     notice, this list of conditions and the following disclaimer in+
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**     the documentation and/or other materials provided with the+
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**     distribution.+
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**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor+
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**     the names of its contributors may be used to endorse or promote+
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**     products derived from this software without specific prior written+
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**     permission.+
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**+
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include <QtCore/QByteArray>+
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#include <QtCore/QDir>+
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#include <QtCore/QLibraryInfo>+
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#include <QtCore/QProcess>+
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+
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#include <QtGui/QMessageBox>+
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+
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#include "assistant.h"+
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+
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Assistant::Assistant()+
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    : proc(0)+
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{+
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}+
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+
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//! [0]+
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Assistant::~Assistant()+
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{+
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    if (proc && proc->state() == QProcess::Running) {+
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        proc->terminate();+
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        proc->waitForFinished(3000);+
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    }+
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    delete proc;+
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}+
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//! [0]+
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+
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//! [1]+
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void Assistant::showDocumentation(const QString &page)+
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{+
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    if (!startAssistant())+
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        return;+
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+
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    QByteArray ba("SetSource ");+
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    ba.append("qthelp://com.trolltech.examples.simpletextviewer/doc/");+
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    +
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    proc->write(ba + page.toLocal8Bit() + '\n');+
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}+
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//! [1]+
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+
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//! [2]+
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bool Assistant::startAssistant()+
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{+
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    if (!proc)+
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        proc = new QProcess();+
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+
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    if (proc->state() != QProcess::Running) {+
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        QString app = QLibraryInfo::location(QLibraryInfo::BinariesPath) + QDir::separator();+
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#if !defined(Q_OS_MAC)+
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        app += QLatin1String("assistant");+
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#else+
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        app += QLatin1String("Assistant.app/Contents/MacOS/Assistant");    +
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#endif+
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+
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        QStringList args;+
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        args << QLatin1String("-collectionFile")+
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            << QLibraryInfo::location(QLibraryInfo::ExamplesPath)+
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            + QLatin1String("/help/simpletextviewer/documentation/simpletextviewer.qhc")+
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            << QLatin1String("-enableRemoteControl");+
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+
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        proc->start(app, args);+
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+
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        if (!proc->waitForStarted()) {+
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            QMessageBox::critical(0, QObject::tr("Simple Text Viewer"),+
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                QObject::tr("Unable to launch Qt Assistant (%1)").arg(app));+
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            return false;+
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        }    +
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    }+
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    return true;+
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}+
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//! [2]+
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