diff --git a/outputview/outputmodel.cpp b/outputview/outputmodel.cpp
index aadda7ad29..8c59479f7d 100644
--- a/outputview/outputmodel.cpp
+++ b/outputview/outputmodel.cpp
@@ -1,390 +1,392 @@
 /***************************************************************************
  *   This file is part of KDevelop                                         *
  *   Copyright 2007 Andreas Pakulat <apaku@gmx.de>                         *
  *   Copyright 2010 Aleix Pol Gonzalez <aleixpol@kde.org>                  *
  *   Copyright (C) 2012  Morten Danielsen Volden mvolden2@gmail.com        *
  *                                                                         *
  *   This program 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 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 Library General Public     *
  *   License along with this program; if not, write to the                 *
  *   Free Software Foundation, Inc.,                                       *
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  ***************************************************************************/
 
 #include "outputmodel.h"
 #include "filtereditem.h"
 #include "outputfilteringstrategies.h"
 
 #include <interfaces/icore.h>
 #include <interfaces/idocumentcontroller.h>
 
 #include <QtCore/QStringList>
 #include <QtCore/QTimer>
 #include <QThread>
 #include <QFont>
 #include <QApplication>
 
 #include <KDebug>
 #include <KGlobalSettings>
 
 
 #include <set>
 
 Q_DECLARE_METATYPE(QVector<KDevelop::FilteredItem>)
 Q_DECLARE_METATYPE(KDevelop::IFilterStrategy*)
 
 namespace KDevelop
 {
 
 /**
  * Number of lines that are processed in one go before we notify the GUI thread
  * about the result. It is generally faster to add multiple items to a model
  * in one go compared to adding each item independently.
  */
 static const int BATCH_SIZE = 50;
 
 /**
  * Time in ms that we wait in the parse worker for new incoming lines before
  * actually processing them. If we already have enough for one batch though
  * we process immediately.
  */
 static const int BATCH_AGGREGATE_TIME_DELAY = 50;
 
 class ParseWorker : public QObject
 {
     Q_OBJECT
 public:
     ParseWorker()
         : QObject(0)
         , m_filter( new NoFilterStrategy )
         , m_timer(new QTimer(this))
     {
         m_timer->setInterval(BATCH_AGGREGATE_TIME_DELAY);
         m_timer->setSingleShot(true);
         connect(m_timer, SIGNAL(timeout()), SLOT(process()));
     }
 
 public slots:
     void changeFilterStrategy( KDevelop::IFilterStrategy* newFilterStrategy )
     {
         m_filter = QSharedPointer<IFilterStrategy>( newFilterStrategy );
     }
 
     void addLines( const QStringList& lines )
     {
         m_cachedLines << lines;
 
         if (m_cachedLines.size() >= BATCH_SIZE) {
             // if enough lines were added, process immediately
             m_timer->stop();
             process();
         } else if (!m_timer->isActive()) {
             m_timer->start();
         }
     }
 
 signals:
     void parsedBatch(const QVector<KDevelop::FilteredItem>& filteredItems);
 
 private slots:
     /**
      * Process *all* cached lines, emit parsedBatch for each batch
      */
     void process()
     {
         QVector<KDevelop::FilteredItem> filteredItems;
         filteredItems.reserve(qMin(BATCH_SIZE, m_cachedLines.size()));
 
         foreach(const QString& line, m_cachedLines) {
             FilteredItem item = m_filter->errorInLine(line);
             if( item.type == FilteredItem::InvalidItem ) {
                 item = m_filter->actionInLine(line);
             }
 
             filteredItems << item;
 
             if( filteredItems.size() == BATCH_SIZE ) {
                 emit parsedBatch(filteredItems);
                 filteredItems.clear();
                 filteredItems.reserve(qMin(BATCH_SIZE, m_cachedLines.size()));
             }
         }
 
         // Make sure to emit the rest as well
         if( !filteredItems.isEmpty() ) {
             emit parsedBatch(filteredItems);
         }
         m_cachedLines.clear();
     }
 
 private:
     QSharedPointer<IFilterStrategy> m_filter;
     QStringList m_cachedLines;
 
     QTimer* m_timer;
 };
 
 class ParsingThread
 {
 public:
     ParsingThread()
     {
         m_thread.setObjectName("ParsingThread");
     }
     virtual ~ParsingThread()
     {
         if (m_thread.isRunning()) {
             m_thread.quit();
             m_thread.wait();
         }
     }
     void addWorker(ParseWorker* worker)
     {
         if (!m_thread.isRunning()) {
             m_thread.start();
         }
         worker->moveToThread(&m_thread);
     }
 private:
     QThread m_thread;
 };
 
 K_GLOBAL_STATIC(ParsingThread, s_parsingThread);
 
 struct OutputModelPrivate
 {
     OutputModelPrivate( OutputModel* model, const KUrl& builddir = KUrl() );
     ~OutputModelPrivate();
     bool isValidIndex( const QModelIndex&, int currentRowCount ) const;
 
     OutputModel* model;
     ParseWorker* worker;
 
     QVector<FilteredItem> m_filteredItems;
     // We use std::set because that is ordered
     std::set<int> m_errorItems; // Indices of all items that we want to move to using previous and next
     KUrl m_buildDir;
 
     void linesParsed(const QVector<KDevelop::FilteredItem>& items)
     {
         model->beginInsertRows( QModelIndex(), model->rowCount(), model->rowCount() + items.size() -  1);
 
         foreach( const FilteredItem& item, items ) {
             if( item.type == FilteredItem::ErrorItem ) {
                 m_errorItems.insert(m_filteredItems.size());
             }
             m_filteredItems << item;
         }
 
         model->endInsertRows();
     }
 };
 
 OutputModelPrivate::OutputModelPrivate( OutputModel* model_, const KUrl& builddir)
 : model(model_)
 , worker(new ParseWorker )
 , m_buildDir( builddir )
 {
     qRegisterMetaType<QVector<KDevelop::FilteredItem> >();
     qRegisterMetaType<KDevelop::IFilterStrategy*>();
     s_parsingThread->addWorker(worker);
     model->connect(worker, SIGNAL(parsedBatch(QVector<KDevelop::FilteredItem>)),
                    model, SLOT(linesParsed(QVector<KDevelop::FilteredItem>)));
 }
 
 bool OutputModelPrivate::isValidIndex( const QModelIndex& idx, int currentRowCount ) const
 {
     return ( idx.isValid() && idx.row() >= 0 && idx.row() < currentRowCount && idx.column() == 0 );
 }
 
 OutputModelPrivate::~OutputModelPrivate()
 {
     worker->deleteLater();
 }
 
 OutputModel::OutputModel( const KUrl& builddir, QObject* parent )
 : QAbstractListModel(parent)
 , d( new OutputModelPrivate( this, builddir ) )
 {
 }
 
 OutputModel::OutputModel( QObject* parent )
     : QAbstractListModel(parent)
 , d( new OutputModelPrivate( this ) )
 {
 }
 
 OutputModel::~OutputModel()
 {
     delete d;
 }
 
 QVariant OutputModel::data(const QModelIndex& idx , int role ) const
 {
     if( d->isValidIndex(idx, rowCount()) )
     {
         switch( role )
         {
             case Qt::DisplayRole:
                 return d->m_filteredItems.at( idx.row() ).shortenedText;
                 break;
             case OutputModel::OutputItemTypeRole:
                 return static_cast<int>(d->m_filteredItems.at( idx.row() ).type);
                 break;
             case Qt::FontRole:
                 return KGlobalSettings::fixedFont();
                 break;
             default:
                 break;
         }
     }
     return QVariant();
 }
 
 int OutputModel::rowCount( const QModelIndex& parent ) const
 {
     if( !parent.isValid() )
         return d->m_filteredItems.count();
     return 0;
 }
 
 QVariant OutputModel::headerData( int, Qt::Orientation, int ) const
 {
     return QVariant();
 }
 
 void OutputModel::activate( const QModelIndex& index )
 {
     if( index.model() != this || !d->isValidIndex(index, rowCount()) )
     {
         return;
     }
     kDebug() << "Model activated" << index.row();
 
 
     FilteredItem item = d->m_filteredItems.at( index.row() );
     if( item.isActivatable )
     {
         kDebug() << "activating:" << item.lineNo << item.url;
         KTextEditor::Cursor range( item.lineNo, item.columnNo );
         KDevelop::IDocumentController *docCtrl = KDevelop::ICore::self()->documentController();
         KUrl url = item.url;
         if(url.isRelative()) {
             url = KUrl(d->m_buildDir, url.path());
         }
         docCtrl->openDocument( url, range );
     } else {
         kDebug() << "not an activateable item";
     }
 }
 
 QModelIndex OutputModel::nextHighlightIndex( const QModelIndex &currentIdx )
 {
     int startrow = d->isValidIndex(currentIdx, rowCount()) ? currentIdx.row() + 1 : 0;
 
     if( !d->m_errorItems.empty() )
     {
         kDebug() << "searching next error";
         // Jump to the next error item
         std::set< int >::const_iterator next = d->m_errorItems.lower_bound( startrow );
         if( next == d->m_errorItems.end() )
             next = d->m_errorItems.begin();
 
         return index( *next, 0, QModelIndex() );
     }
 
     for( int row = 0; row < rowCount(); ++row ) 
     {
         int currow = (startrow + row) % rowCount();
         if( d->m_filteredItems.at( currow ).isActivatable )
         {
             return index( currow, 0, QModelIndex() );
         }
     }
     return QModelIndex();
 }
 
 QModelIndex OutputModel::previousHighlightIndex( const QModelIndex &currentIdx )
 {
     //We have to ensure that startrow is >= rowCount - 1 to get a positive value from the % operation.
     int startrow = rowCount() + (d->isValidIndex(currentIdx, rowCount()) ? currentIdx.row() : rowCount()) - 1;
 
     if(!d->m_errorItems.empty())
     {
         kDebug() << "searching previous error";
 
         // Jump to the previous error item
         std::set< int >::const_iterator previous = d->m_errorItems.lower_bound( currentIdx.row() );
 
         if( previous == d->m_errorItems.begin() )
             previous = d->m_errorItems.end();
 
         --previous;
 
         return index( *previous, 0, QModelIndex() );
     }
 
     for ( int row = 0; row < rowCount(); ++row )
     {
         int currow = (startrow - row) % rowCount();
         if( d->m_filteredItems.at( currow ).isActivatable )
         {
             return index( currow, 0, QModelIndex() );
         }
     }
     return QModelIndex();
 }
 
 void OutputModel::setFilteringStrategy(const OutputFilterStrategy& currentStrategy)
 {
     IFilterStrategy* filter = 0;
     switch( currentStrategy )
     {
         case NoFilter:
             filter = new NoFilterStrategy;
             break;
         case CompilerFilter:
             filter = new CompilerFilterStrategy( d->m_buildDir );
             break;
         case ScriptErrorFilter:
             filter = new ScriptErrorFilterStrategy;
             break;
         case StaticAnalysisFilter:
             filter = new StaticAnalysisFilterStrategy;
             break;
         default:
             // assert(false);
             filter = new NoFilterStrategy;
             break;
     }
     Q_ASSERT(filter);
 
-    d->worker->changeFilterStrategy(filter);
+    QMetaObject::invokeMethod(d->worker, "changeFilterStrategy",
+                              Q_ARG(KDevelop::IFilterStrategy*, filter));
 }
 
 void OutputModel::appendLines( const QStringList& lines )
 {
     if( lines.isEmpty() )
         return;
 
-    d->worker->addLines(lines);
+    QMetaObject::invokeMethod(d->worker, "addLines",
+                              Q_ARG(QStringList, lines));
 }
 
 void OutputModel::appendLine( const QString& l )
 {
     appendLines( QStringList() << l );
 }
 
 }
 
 #include "outputmodel.moc"
 #include "moc_outputmodel.cpp"