proxytoolfactory.cpp

/*
  proxytoolfactory.cpp

  This file is part of GammaRay, the Qt application inspection and
  manipulation tool.

  Copyright (C) 2011 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
  Author: Volker Krause <volker.krause@kdab.com>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "proxytoolfactory.h"

#include <qpluginloader.h>
#include <qsettings.h>
#include <qfileinfo.h>
#include <qdir.h>
#include <QLabel>

#include <iostream>

using namespace GammaRay;

ProxyToolFactory::ProxyToolFactory(const QString &path, QObject *parent)
  : QObject(parent), m_factory(0)
{
  const QFileInfo pluginInfo(path);
  m_id = pluginInfo.baseName();

  QSettings desktopFile(path, QSettings::IniFormat);
  desktopFile.beginGroup(QLatin1String("Desktop Entry"));
  m_name = desktopFile.value(QLatin1String("Name")).toString();
  m_supportedTypes =
    desktopFile.value(
      QLatin1String("X-GammaRay-Types")).toString().split(QLatin1Char(';'),
                                                          QString::SkipEmptyParts);
  m_pluginPath =
    pluginInfo.dir().absoluteFilePath(desktopFile.value(QLatin1String("Exec")).toString());

  const QString dllBaseName = desktopFile.value(QLatin1String("Exec")).toString();
  if (dllBaseName.isEmpty()) {
    return;
  }

  foreach (const QString &entry,
           pluginInfo.dir().entryList(QStringList(dllBaseName + QLatin1Char('*')), QDir::Files)) {
    const QString path = pluginInfo.dir().absoluteFilePath(entry);
    if (QLibrary::isLibrary(path)) {
      m_pluginPath = path;
      break;
    }
  }
}

bool ProxyToolFactory::isValid() const
{
  return
    !m_id.isEmpty() &&
    !m_name.isEmpty() &&
    !m_pluginPath.isEmpty() &&
    !m_supportedTypes.isEmpty();
}

QString ProxyToolFactory::id() const
{
  return m_id;
}

QString ProxyToolFactory::name() const
{
  return m_name;
}

QStringList ProxyToolFactory::supportedTypes() const
{
  return m_supportedTypes;
}

void ProxyToolFactory::init(ProbeInterface *probe)
{
  QPluginLoader loader(m_pluginPath, this);
  m_factory = qobject_cast<ToolFactory*>(loader.instance());
  if (!m_factory) {
    std::cerr << "error loading plugin " << qPrintable(m_pluginPath)
              << ": " << qPrintable(loader.errorString()) << std::endl;
    return;
  }
  Q_ASSERT(m_factory);
  m_factory->init(probe);
}

QWidget *ProxyToolFactory::createWidget(ProbeInterface *probe, QWidget *parentWidget)
{
  if (!m_factory) {
    return new QLabel(tr("Plugin '%1' could not be loaded.").arg(m_pluginPath), parentWidget);
  }
  Q_ASSERT(m_factory);
  return m_factory->createWidget(probe, parentWidget);
}

#include "proxytoolfactory.moc"