kde-playground/kdepimlibs/kontactinterface/core.cpp

/*
  This file is part of the KDE Kontact Plugin Interface Library.

  Copyright (c) 2001 Matthias Hoelzer-Kluepfel <mhk@kde.org>
  Copyright (c) 2002-2003 Daniel Molkentin <molkentin@kde.org>
  Copyright (c) 2003 Cornelius Schumacher <schumacher@kde.org>

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

  This library 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
  Library General Public License for more details.

  You should have received a copy of the GNU Library General Public License
  along with this library; see the file COPYING.LIB.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  Boston, MA 02110-1301, USA.
*/

#include "core.h"

#include <kdebug.h>
#include <kparts/part.h>
#include <kparts/componentfactory.h>

#include <QDateTime>
#include <QTimer>

using namespace KontactInterface;

//@cond PRIVATE
class KontactInterface::Core::Private
{
  Core *const q;

  public:
    explicit Private( Core *qq );

    void slotPartDestroyed( QObject * );
    void checkNewDay();

    QString lastErrorMessage;
    QDate mLastDate;
    QMap<QByteArray,KParts::ReadOnlyPart *> mParts;
};

Core::Private::Private( Core *qq )
  : q( qq ), mLastDate( QDate::currentDate() )
{
}
//@endcond

Core::Core( QWidget *parent, Qt::WindowFlags f )
  : KParts::MainWindow( parent, f ), d( new Private( this ) )
{
  QTimer *timer = new QTimer( this );
  connect( timer, SIGNAL(timeout()), SLOT(checkNewDay()) );
  timer->start( 1000 * 60 );
}

Core::~Core()
{
  delete d;
}

KParts::ReadOnlyPart *Core::createPart( const char *libname )
{
  kDebug() << libname;

  QMap<QByteArray,KParts::ReadOnlyPart *>::ConstIterator it;
  it = d->mParts.constFind( libname );
  if ( it != d->mParts.constEnd() ) {
    return it.value();
  }

  kDebug() << "Creating new KPart";

  KPluginLoader loader( QString::fromLatin1(libname) );
  kDebug() << loader.fileName();
  KPluginFactory *factory = loader.factory();
  KParts::ReadOnlyPart *part = 0;
  if ( factory ) {
    part = factory->create<KParts::ReadOnlyPart>( this );
  }

  if ( part ) {
    d->mParts.insert( libname, part );
    QObject::connect( part, SIGNAL(destroyed(QObject*)),
                      SLOT(slotPartDestroyed(QObject*)) );
  } else {
    d->lastErrorMessage = loader.errorString();
    kWarning() << d->lastErrorMessage;
  }

  return part;
}

//@cond PRIVATE
void Core::Private::slotPartDestroyed( QObject *obj )
{
  // the part was deleted, we need to remove it from the part map to not return
  // a dangling pointer in createPart
  QMap<QByteArray, KParts::ReadOnlyPart*>::Iterator end = mParts.end();
  QMap<QByteArray, KParts::ReadOnlyPart*>::Iterator it = mParts.begin();
  for ( ; it != end; ++it ) {
    if ( it.value() == obj ) {
      mParts.erase( it );
      return;
    }
  }
}

void Core::Private::checkNewDay()
{
  if ( mLastDate != QDate::currentDate() ) {
    emit q->dayChanged( QDate::currentDate() );
  }

  mLastDate = QDate::currentDate();
}
//@endcond

QString Core::lastErrorMessage() const
{
  return d->lastErrorMessage;
}

#include "moc_core.cpp"
// vim: sw=2 sts=2 et tw=80