/*
    *  File: TimeBarViewer.java 
    *  Copyright (c) 2004-2009  Peter Kliem (Peter.Kliem@jaret.de)
    *  A commercial license is available, see http://www.jaret.de.
    *
    *  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, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  package de.jaret.util.ui.timebars.swing;
  
  import java.awt.AlphaComposite;
  import java.awt.BorderLayout;
  import java.awt.Color;
  import java.awt.Component;
  import java.awt.Cursor;
  import java.awt.Dimension;
  import java.awt.Graphics;
  import java.awt.Graphics2D;
  import java.awt.Point;
  import java.awt.Rectangle;
  import java.awt.event.ComponentEvent;
  import java.awt.event.ComponentListener;
  import java.awt.event.MouseEvent;
  import java.awt.event.MouseListener;
  import java.awt.event.MouseMotionListener;
  import java.awt.event.MouseWheelEvent;
  import java.awt.event.MouseWheelListener;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import javax.swing.BoundedRangeModel;
  import javax.swing.JComponent;
  import javax.swing.JPanel;
  import javax.swing.JPopupMenu;
  import javax.swing.JScrollBar;
  import javax.swing.SwingUtilities;
  import javax.swing.event.ChangeEvent;
  import javax.swing.event.ChangeListener;
  
  import de.jaret.util.date.Interval;
  import de.jaret.util.date.JaretDate;
  import de.jaret.util.misc.Pair;
  import de.jaret.util.ui.timebars.TimeBarIntervalFilter;
  import de.jaret.util.ui.timebars.TimeBarMarker;
  import de.jaret.util.ui.timebars.TimeBarRowFilter;
  import de.jaret.util.ui.timebars.TimeBarRowSorter;
  import de.jaret.util.ui.timebars.TimeBarViewerDelegate;
  import de.jaret.util.ui.timebars.TimeBarViewerInterface;
  import de.jaret.util.ui.timebars.mod.IntervalModificator;
  import de.jaret.util.ui.timebars.model.FocussedIntervalListener;
  import de.jaret.util.ui.timebars.model.HierarchicalTimeBarModel;
  import de.jaret.util.ui.timebars.model.HierarchicalViewState;
  import de.jaret.util.ui.timebars.model.IIntervalRelation;
  import de.jaret.util.ui.timebars.model.ISelectionRectListener;
  import de.jaret.util.ui.timebars.model.ITimeBarChangeListener;
  import de.jaret.util.ui.timebars.model.ITimeBarViewState;
  import de.jaret.util.ui.timebars.model.TBRect;
  import de.jaret.util.ui.timebars.model.TimeBarModel;
  import de.jaret.util.ui.timebars.model.TimeBarNode;
  import de.jaret.util.ui.timebars.model.TimeBarRow;
  import de.jaret.util.ui.timebars.model.TimeBarRowHeader;
  import de.jaret.util.ui.timebars.model.TimeBarSelectionModel;
  import de.jaret.util.ui.timebars.strategy.IOverlapStrategy;
  import de.jaret.util.ui.timebars.strategy.ITickProvider;
  import de.jaret.util.ui.timebars.strategy.OverlapInfo;
  import de.jaret.util.ui.timebars.swing.renderer.DefaultGridRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.DefaultHeaderRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.DefaultMarkerRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.DefaultMiscRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.DefaultTimeBarRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.DefaultTimeScaleRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.GridRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.HeaderRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.HierarchyRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.IGlobalAssistantRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.IMarkerRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.IMiscRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.IRelationRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.ITitleRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.TimeBarGapRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.TimeBarRenderer;
  import de.jaret.util.ui.timebars.swing.renderer.TimeScaleRenderer;
  
  /**
   * Viewer for a TimeBarModel (Swing version). Displays the intervals using a renderer. Supports sorting and/or filtering
   * of the rows in the model without affecting the model itself.
  * <p>
  * <b>NOTE: The Swing version is not as complete as the swt version!</b>
  * </p>
  * <p>
  * The implementation depends on the <code>TimeBarViewerDelegate</code> for the operations and calculations that is
  * shared between the Swing and the SWT implementation of the viewer. The delegate is accesible via the method
  * <code>getDelegate()</code>. It supplies additional functionality not delegated by methods in this class (will be done
  * in future releases).
  * </p>
  * <p>
  * 
  * @author Peter Kliem
  * @version $Id: TimeBarViewer.java 1090 2011-10-04 19:41:10Z kliem $
  */
 @SuppressWarnings("serial")
 public class TimeBarViewer extends JPanel implements TimeBarViewerInterface, ChangeListener, ComponentListener {
     /** DEBUGGING OPTION: if set to true the actual paint times will be printed to stdout. */
     private static final boolean SHOWPAINTTIME = false;
 
     /** the preferred height. */
     private static final int PREFHEIGHT = 300;
     /** the preferred width. */
     private static final int PREFWIDTH = 500;
 
     /**
      * The delegate is the heart of the joined implementation between Swing and SWT version of the viewer.
      */
     protected TimeBarViewerDelegate _delegate;
 
     /** renderer used for the stimescale. */
     protected transient TimeScaleRenderer _timeScaleRenderer = new DefaultTimeScaleRenderer();
     /** used to cache the time scale component for static use (tooltips). */
     protected JComponent _timeScaleRendererComponent;
     /** renderer used for rendering the grid/background. */
     protected transient GridRenderer _gridRenderer = new DefaultGridRenderer();
     /** used to cache the grid renderer component. */
     protected JComponent _gridRendererComponent;
     /** gap renderer. */
     protected TimeBarGapRenderer _gapRenderer = null;
     /** renderer for the row headers. */
     protected HeaderRenderer _headerRenderer;
     /** renderer for the hierarchy section. */
     protected HierarchyRenderer _hierarchyRenderer;
     /** Renderer for various elements. */
     protected transient IMiscRenderer _miscRenderer = new DefaultMiscRenderer();
     /** Renderer used to render the title area. null indicates no renderer. */
     protected transient ITitleRenderer _titleRenderer = null;
     /** Relation render. */
     protected transient IRelationRenderer _relationRenderer = null;
     /** marker renderer. */
     protected transient IMarkerRenderer _markerRenderer = new DefaultMarkerRenderer();
     /** gloab assistant renderer. */
     protected transient IGlobalAssistantRenderer _globalAssistantRenderer;
 
     /** horizontal scrollbar if existing. */
     protected JScrollBar _xScrollBar;
 
     /** vertical scrollbar if existing. */
     protected JScrollBar _yScrollBar;
 
     /** the diagram pane itself. */
     public Diagram _diagram;
 
     /** mapping between interval classes and renderers. */
     protected Map<Class<? extends Interval>, TimeBarRenderer> _rendererMap = new HashMap<Class<? extends Interval>, TimeBarRenderer>();
 
     /** map of registered popup menus for intervals. */
     protected Map<Class<? extends Interval>, JPopupMenu> _registeredPopupMenues;
 
     /** context menu for the body of the viewer. */
     protected JPopupMenu _bodyContextMenu;
     /** context menu for the time scale. */
     protected JPopupMenu _timeScaleContextMenu;
     /** context menu for the header. */
     protected JPopupMenu _headerContextMenu;
     /** context menu for the hierarchy area. */
     protected JPopupMenu _hierarchyContextMenu;
     /** context menu for the title area. */
     protected JPopupMenu _titleContextMenu;
 
     /** flag indicating popupTrigger is not set for MouseReleased event. */     
     protected boolean _requiresPopupTriggerCheck; 
 
     /** panel the horizontal scrollbar is placed on. */
     protected JPanel _horizontalScrollPanel;
     /** panel the vertical scrollbar is placed on. */
     protected JPanel _verticalScrollPanel;
 
     protected boolean _useTitleRendererComponentInPlace = false;
 
     /**
      * Constructs a timebar viewer.
      * 
      * @param model TimeBarModel to be used. The model may be <code>null</code>.
      * @param suppressXScroll if true the x scrollbar will not be displayed
      * @param suppressYScroll if true the y scrollbar will not be displayed
      */
     public TimeBarViewer(TimeBarModel model, boolean suppressXScroll, boolean suppressYScroll) {
         _delegate = new TimeBarViewerDelegate(this);
         // store delegate for access from outside (special cases)
         putClientProperty("delegate", _delegate);
 
         setLayout(new BorderLayout());
         // horizontal scrollbar
         _xScrollBar = new JScrollBar(JScrollBar.HORIZONTAL);
         BoundedRangeModel brModelX = _xScrollBar.getModel();
         brModelX.addChangeListener(this);
         _xScrollBar.setUnitIncrement(1);
         if (!suppressXScroll) {
             _horizontalScrollPanel = new JPanel(new BorderLayout());
             add(_horizontalScrollPanel, BorderLayout.SOUTH);
             _horizontalScrollPanel.add(_xScrollBar, BorderLayout.CENTER);
         }
         // vertical scrollbar
         _yScrollBar = new JScrollBar(JScrollBar.VERTICAL);
         BoundedRangeModel brModelY = _yScrollBar.getModel();
         brModelY.addChangeListener(this);
         _yScrollBar.setUnitIncrement(1);
         if (!suppressYScroll) {
             _verticalScrollPanel = new JPanel(new BorderLayout());
             add(_verticalScrollPanel, BorderLayout.EAST);
             _verticalScrollPanel.add(_yScrollBar, BorderLayout.CENTER);
         }
 
         // diagram
         _diagram = new Diagram();
         _diagram._timeBarViewer = this; // parent reference
         add(_diagram, BorderLayout.CENTER);
         // resize listener
         this.addComponentListener(this);
         // set the model if given
         if (model != null) {
             _delegate.setModel(model);
         }
         // default header renderer
         setHeaderRenderer(new DefaultHeaderRenderer());
 
         // register the default renderer for intervals
         registerTimeBarRenderer(Interval.class, new DefaultTimeBarRenderer());
 
         // set the timescale renderer as the tick provider for the defaultgrid renderer
         // heavy knowledge of the default setup here ...
         _gridRenderer.setTickProvider((DefaultTimeScaleRenderer) _timeScaleRenderer);
 
         // check macos
         String osname = System.getProperty("os.name");
         // check if we need to manually check for popup trigger
         if (osname != null) {
             _requiresPopupTriggerCheck = osname.startsWith("Mac") || osname.startsWith("Linux");
         }
 
     }
 
     /**
      * Constructs a timebarviewer with both y and x scrollbars.
      * 
      * @param model timebarmodel to be displayed. The model may be <code>null</code>.
      */
     public TimeBarViewer(TimeBarModel model) {
         this(model, false, false);
     }
 
     /**
      * Constructs a timebarviewer without a model.
      * 
      */
     public TimeBarViewer() {
         this(null);
     }
 
     /**
      * Retrieve the x scroll bar.
      * 
      * @return the x scroll bar or <code>null</code> if the scroll bar has been suppressed
      */
     public JScrollBar getXScrollBar() {
         return _xScrollBar;
     }
 
     /**
      * Retrieve the y scroll bar.
      * 
      * @return the y scroll bar or <code>null</code> if the scroll bar has been suppressed
      */
     public JScrollBar getYScrollBar() {
         return _yScrollBar;
     }
 
     /**
      * {@inheritDoc}
      */
     public synchronized void addMouseListener(MouseListener l) {
         // TODO remove, handling of the other possible listeners
         super.addMouseListener(l);
         _diagram.addMouseListener(l);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setModel(TimeBarModel model) {
         _delegate.setModel(model);
     }
 
     /**
      * {@inheritDoc}
      */
     public TimeBarModel getModel() {
         return _delegate.getModel();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setRowFilter(TimeBarRowFilter rowFilter) {
         _delegate.setRowFilter(rowFilter);
     }
 
     /**
      * {@inheritDoc}
      */
     public TimeBarRowFilter getRowFilter() {
         return _delegate.getRowFilter();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setRowSorter(TimeBarRowSorter rowSorter) {
         _delegate.setRowSorter(rowSorter);
     }
 
     /**
      * {@inheritDoc}
      */
     public TimeBarRowSorter getRowSorter() {
         return _delegate.getRowSorter();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setIntervalFilter(TimeBarIntervalFilter intervalFilter) {
         _delegate.setIntervalFilter(intervalFilter);
     }
 
     /**
      * Set the default renderer to be used for rendering the timebars.
      * 
      * @param renderer the renderer to be used if no other registered renderer is appropriate
      */
     public void setTimeBarRenderer(TimeBarRenderer renderer) {
         registerTimeBarRenderer(Interval.class, renderer);
     }
 
     /**
      * Retrieve the default renderer currently used for rendering intervals (regsitered for Interval.class).
      * 
      * @return the renderer
      */
     public TimeBarRenderer getTimeBarRenderer() {
         return _rendererMap.get(Interval.class);
     }
 
     /**
      * Register a renderer for an interval class or interface. The renderer registered for Interval.class is the default
      * renderer if no other renderer can be found (obviously).
      * 
      * @param intervalClass class of the intervals
      * @param renderer renderer for the given class
      */
     public void registerTimeBarRenderer(Class<? extends Interval> intervalClass, TimeBarRenderer renderer) {
         _rendererMap.put(intervalClass, renderer);
         repaint();
     }
 
     /**
      * Retrieve the complete renderer map. This method's purpose is mainly to feed the TimeBarPrinter.
      * 
      * @return the renderer map
      */
     public Map<Class<? extends Interval>, TimeBarRenderer> getRendererMapping() {
         return _rendererMap;
     }
 
     /**
      * Retrieve a renderer for a given class. Checks all interfaces and all superclasses.
      * 
      * @param clazz class in question
      * @return renderer or null
      */
     protected TimeBarRenderer getRenderer(Class<? extends Interval> clazz) {
         TimeBarRenderer result = null;
         result = _rendererMap.get(clazz);
         if (result != null) {
             return result;
         }
 
         // direct interfaces
         Class<?>[] interfaces = clazz.getInterfaces();
         for (Class<?> c : interfaces) {
             result = _rendererMap.get(c);
             if (result != null) {
                 return result;
             }
         }
 
         // superclasses
         Class<?> sc = clazz.getSuperclass();
 
         while (sc != null) {
             result = _rendererMap.get(sc);
             if (result != null) {
                 return result;
             }
             // interfaces of the superclass
             Class<?>[] scinterfaces = sc.getInterfaces();
             for (Class<?> c : scinterfaces) {
                 result = _rendererMap.get(c);
                 if (result != null) {
                     return result;
                 }
             }
             sc = sc.getSuperclass();
         }
 
         return result;
     }
 
     /**
      * Set the renderer to be used for rendering the row headers.
      * 
      * @param renderer HeaderRenderer to be used or <code>null</code> indicating headers should not be rendered
      */
     public void setHeaderRenderer(HeaderRenderer renderer) {
         _headerRenderer = renderer;
         if (_headerRenderer != null) {
             _delegate.setYAxisWidth(renderer.getWidth());
         } else {
             _delegate.setYAxisWidth(0);
         }
         _diagram.safeRepaint();
     }
 
     /**
      * Set the renderer to be used for rendering the hierarchy area.
      * 
      * @param renderer HierarchyRenderer to be used or <code>null</code> indicating headers should not be rendered
      */
     public void setHierarchyRenderer(HierarchyRenderer renderer) {
         _hierarchyRenderer = renderer;
         if (_hierarchyRenderer != null) {
             _delegate.setHierarchyWidth(renderer.getWidth());
         } else {
             _delegate.setHierarchyWidth(0);
         }
         _diagram.safeRepaint();
     }
 
     /**
      * Sets the scale of the x axis as pixel per second, thus a value of 1000.0 / (24.0 * 60 * 60) will result in
      * displaying one day over 1000 pixel. The property is a bound property and can be listened to by a
      * PropertyChangeListener
      * 
      * @param pixelPerSecond pixel per second
      */
     public void setPixelPerSecond(double pixelPerSecond) {
         _delegate.setPixelPerSecond(pixelPerSecond);
     }
 
     /**
      * {@inheritDoc}
      */
     public double getPixelPerSecond() {
         return _delegate.getPixelPerSecond();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setRowHeight(int rowHeight) {
         _delegate.setRowHeight(rowHeight);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getRowHeight() {
         return _delegate.getTimeBarViewState().getDefaultRowHeight();
     }
 
     /**
      * {@inheritDoc}
      */
     public void updateXScrollBar(int max, int pos, int secondsDisplayed) {
         BoundedRangeModel brModel = _xScrollBar.getModel();
         if (brModel != null) {
             // remove changelistener to avoid cycling
             brModel.removeChangeListener(this);
             brModel.setMinimum(0);
             brModel.setMaximum(max);
             brModel.setExtent(secondsDisplayed);
             brModel.setValue(pos);
             brModel.addChangeListener(this);
             _xScrollBar.setBlockIncrement(secondsDisplayed  * 9 / 10); // TOOD check configurabilty
             _xScrollBar.setUnitIncrement(secondsDisplayed / 10);
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void updateYScrollBar(int max, int pos, int rowsDisplayed) {
         BoundedRangeModel brModel = _yScrollBar.getModel();
         // remove changelistener to avoid cycling
         brModel.removeChangeListener(this);
         brModel.setMinimum(0);
         brModel.setMaximum(max);
         brModel.setExtent(rowsDisplayed);
         brModel.setValue(pos);
         brModel.addChangeListener(this);
         _yScrollBar.setBlockIncrement(rowsDisplayed * 9 / 10); // TODO check configurabilty
         _yScrollBar.setUnitIncrement(getRowHeight() * 3);
 //        _yScrollBar.setBlockIncrement(rowsDisplayed / 10 + 1);
 //        _yScrollBar.setUnitIncrement(rowsDisplayed / 20 + 1);
     }
 
     /**
      * Invoked when one of the scrollbars was moved.
      * 
      * @param e event
      * @see javax.swing.event.ChangeListener#stateChanged(javax.swing.event.ChangeEvent)
      */
     public void stateChanged(ChangeEvent e) {
         if (e.getSource() == _xScrollBar.getModel()) {
             BoundedRangeModel brModel = _xScrollBar.getModel();
             int value = brModel.getValue();
             _delegate.handleHorizontalScroll(value, true);
         } else if (e.getSource() == _yScrollBar.getModel()) {
             BoundedRangeModel brModel = _yScrollBar.getModel();
             int value = brModel.getValue();
             _delegate.handleVerticalScroll(value, true);
             // _diagram.safeRepaint();
         } else {
             throw new RuntimeException("Unknown sender");
         }
     }
 
     // *** ComponentListener for registering resizes
     /**
      * {@inheritDoc}
      */
     public void componentHidden(ComponentEvent e) {
     }
 
     /**
      * {@inheritDoc}
      */
     public void componentMoved(ComponentEvent e) {
     }
 
     /**
      * {@inheritDoc}
      */
     public void componentResized(ComponentEvent e) {
         // _delegate.updateScrollBars();
         _delegate.componentResized();
     }
 
     /**
      * {@inheritDoc}
      */
     public void componentShown(ComponentEvent e) {
     }
 
     // *** End of ComponentListener
 
     /**
      * Retrieve the JComponent for a given row and interval.
      * 
      * @param row row
      * @param interval interval
      * @return JComponent set up for rendering or other tasks (bounds are set)
      */
     protected JComponent getIntervalComponent(TimeBarRow row, Interval interval) {
         Rectangle intervalRect = _delegate.getIntervalBounds(row, interval);
 
         return getIntervalComponent(interval, intervalRect);
     }
 
     /**
      * Retrieve the JComponent for a given row and interval.
      * 
      * @param interval interval
      * @param intervalRect rectangle denoting the area of the interval
      * @return JComponent set up for rendering or other tasks (bounds are set)
      */
     protected JComponent getIntervalComponent(Interval interval, Rectangle intervalRect) {
         boolean overlapping = false;
         OverlapInfo oi = null;
         TimeBarRow row = _delegate.getModel().getRowForInterval(interval);
         if (!_delegate.getTimeBarViewState().getDrawOverlapping(row)) {
             oi = _delegate.getOverlapStrategy().getOverlapInfo(row, interval);
             if (oi != null && (oi.maxOverlapping > 0 || _delegate.getUseUniformHeight())) {
                 overlapping = true;
             }
         }
         return getIntervalComponent(interval, intervalRect, overlapping);
     }
 
     /**
      * Retrieve the JComponent for an interval.
      * 
      * @param interval the interval
      * @param intervalRect rectangle marking the drawing bounds
      * @param overlapping if the interval is overlapping
      * @return the configured JComponent
      */
     protected JComponent getIntervalComponent(Interval interval, Rectangle intervalRect, boolean overlapping) {
         TimeBarRenderer renderer = getRenderer(interval.getClass());
         if (renderer == null) {
             throw new RuntimeException("no suitable renderer registered");
         }
 
         JComponent component = renderer.getTimeBarRendererComponent(this, interval, false, overlapping);
         component.setBounds(intervalRect);
         return component;
     }
 
     /**
      * The component drawing the viewer itself.
      * 
      * @author Peter Kliem
      * @version $Id: TimeBarViewer.java 1090 2011-10-04 19:41:10Z kliem $
      */
     private class Diagram extends JComponent implements MouseListener, MouseMotionListener, MouseWheelListener {
         /** surrounding timebar viewer. */
         protected TimeBarViewer _timeBarViewer;
 
         /**
          * Default constructor.
          */
         public Diagram() {
             // setDoubleBuffered(false);
             // setOpaque(false);
             setBackground(Color.WHITE);
             setToolTipText(""); // set a tooltip since otherwise swing wont ask
             addMouseListener(this);
             addMouseMotionListener(this);
             addMouseWheelListener(this);
         }
 
         /**
          * {@inheritDoc}
          */
         public String getToolTipText(MouseEvent event) {
             int x = event.getX();
             int y = event.getY();
             return _delegate.getToolTipText(x, y);
         }
 
         /**
          * Thread safe repaint (mybe the repaint method is thread safe by itself ... won't hurt)
          */
         public void safeRepaint() {
             Runnable doRepaint = new Runnable() {
                 public void run() {
                     repaint();
                 }
             };
             SwingUtilities.invokeLater(doRepaint);
         }
 
         /**
          * {@inheritDoc} Paint the component. The clipping bounds of the graphics are used to reduce painting to the
          * region that needs update.
          */
         public void paintComponent(Graphics g) {
             long time = System.currentTimeMillis();
             long nanoTime = System.nanoTime();
 
             _delegate.preparePaint(getWidth(), getHeight()); // prepare the geometry
 
             g.setColor(Color.WHITE);
             g.fillRect(g.getClipBounds().x, g.getClipBounds().y, g.getClipBounds().width, g.getClipBounds().height);
             g.setColor(Color.BLACK);
 
             // draw x axis if enabled
             if (_delegate.getTimeScalePosition() != TIMESCALE_POSITION_NONE) {
                 drawXAxis(g);
             }
             drawGrid(g); // draw the grid if enabled
 
             // kick in the global assistant renderer
             if (_globalAssistantRenderer != null) {
                 _globalAssistantRenderer.doRenderingBeforeIntervals(_delegate, g);
             }
 
             // draw rows (including gaps)
             drawRows(g);
             // draw markers
             drawMarkers(g);
 
             // draw selection rectangle
             Rectangle clipSave = g.getClipBounds();
             g.setClip(clipSave.intersection(_delegate.getDiagramRect()));
             drawSelectionRect(g);
             g.setClip(clipSave);
 
             // draw region rect
             clipSave = g.getClipBounds();
             g.setClip(clipSave.intersection(_delegate.getDiagramRect()));
             _miscRenderer.renderRegionRect(g, this._timeBarViewer, _delegate);
             g.setClip(clipSave);
 
             // draw the title if a title renderer has been set
             if (_titleRenderer != null) {
                 JComponent titleComponent = _titleRenderer.getTitleRendererComponent(this._timeBarViewer);
                 if (!_useTitleRendererComponentInPlace) {
                     titleComponent.setBounds(_delegate.getTitleRect());
                     titleComponent.paint(g);
                 } else {
                     if (titleComponent.getParent() == null) {
                         add(titleComponent);
                     }
                     titleComponent.setBounds(_delegate.getTitleRect());
                     titleComponent.doLayout();
                     // no double painting for the title renderer
                     //titleComponent.paintAll(g); 
                 }
             }
 
             // kick in the global assistant renderer
             if (_globalAssistantRenderer != null) {
                 _globalAssistantRenderer.doRenderingLast(_delegate, g);
             }
 
             // primitive debug for monitoring paint time
             if (SHOWPAINTTIME) {
                 System.out.println(_delegate.getName() + " : paintTime " + (System.currentTimeMillis() - time) + " ms "
                         + (System.nanoTime() - nanoTime) + " ns");
             }
         }
 
         /**
          * Draws the selection rectangle if present.
          * 
          * @param g graphics
          */
         private void drawSelectionRect(Graphics g) {
             if (_delegate.getSelectionRect() != null) {
                 // normalize and remember
                 _delegate.setLastSelRect(normalizeRectangle(_delegate.getSelectionRect()));
                 Rectangle lastSelRect = _delegate.getLastSelRect();
                 _miscRenderer.renderSelectionRect(g, this._timeBarViewer, lastSelRect);
             }
 
         }
 
         /**
          * Normalize a rectangle.
          * 
          * @param rect rectangle to normalize
          * @return normalized (pos width nd heigth) rectangle
          */
         private Rectangle normalizeRectangle(Rectangle rect) {
             int x = Math.min(rect.x, rect.x + rect.width);
             int y = Math.min(rect.y, rect.y + rect.height);
             int width = Math.abs(rect.width);
             int height = Math.abs(rect.height);
             return new Rectangle(x, y, width, height);
         }
 
         /**
          * Draws all markers for the diagram. If a marker is not currently displayed it will not be painted.
          * 
          * @param g Graphics to use
          */
         private void drawMarkers(Graphics g) {
             if (_delegate.getMarkers() != null) {
                 for (TimeBarMarker marker : _delegate.getMarkers()) {
                     if (_delegate.isDisplayed(marker.getDate())) {
                         drawMarker(g, marker);
                     }
                 }
             }
         }
 
         /**
          * Draw a single marker.
          * 
          * @param g Graphics to be used
          * @param marker marker to draw
          */
         private void drawMarker(Graphics g, TimeBarMarker marker) {
             if (_markerRenderer != null) {
                 int x = _delegate.xForDate(marker.getDate());
                 boolean dragged = _delegate.getDraggedMarker() == marker;
                 _markerRenderer.renderMarker(_delegate, g, marker, x, dragged);
             }
         }
 
         /**
          * Draws the x axis using the time scale renderer.
          * 
          * @param g Graphics context to use
          */
         private void drawXAxis(Graphics g) {
             if (_timeScaleRenderer != null) {
                 _timeScaleRendererComponent = _timeScaleRenderer.getRendererComponent(_timeBarViewer, _delegate
 
                 .getTimeScalePosition() == TimeBarViewerInterface.TIMESCALE_POSITION_TOP);
                 _timeScaleRendererComponent.setBounds(_delegate.getXAxisRect());
                 Graphics gg = g.create(_delegate.getXAxisRect().x, _delegate.getXAxisRect().y,
                         _delegate.getXAxisRect().width, _delegate.getXAxisRect().height);
                 _timeScaleRendererComponent.paint(gg);
                 gg.dispose();
             }
         }
 
         /**
          * Draws the grid/background using the gridRenderer.
          * 
          * @param g graphics
          */
         private void drawGrid(Graphics g) {
             if (_gridRenderer != null) {
                 _gridRendererComponent = _gridRenderer.getRendererComponent(_timeBarViewer);
                 _gridRendererComponent.setBounds(_delegate.getDiagramRect());
                 Graphics gg = g.create(_delegate.getDiagramRect().x, _delegate.getDiagramRect().y,
                         _delegate.getDiagramRect().width, _delegate.getDiagramRect().height);
                 _gridRendererComponent.paint(gg);
                 gg.dispose();
             }
         }
 
         /**
          * Draw all rows. Rows outside the clipping bounds of the graphics context are not painted.
          * 
          * @param g Graphics to use
          */
         private void drawRows(Graphics g) {
             if (_delegate.getOrientation() == Orientation.HORIZONTAL) {
                 drawRowsHorizontal(g);
             } else {
                 drawRowsVertical(g);
             }
             // relation rendering
             if (_relationRenderer != null) {
                 _relationRenderer.renderRelations(_delegate, g);
             }
             drawGhostIntervals(g);
         }
 
         /**
          * Draw rows for horizontal orientation.
          * 
          * @param g Graphics to use
          */
         private void drawRowsHorizontal(Graphics g) {
             g.setColor(Color.BLACK);
 
             // set the clipping to include only the heigth of the diagram rect
             Rectangle clipSave = g.getClipBounds();
             g.setClip(0, _delegate.getDiagramRect().y, getWidth(), _delegate.getDiagramRect().height);
 
             // separating line to the header
             // MAYBE color configurable
             g.drawLine(_delegate.getDiagramRect().x - 1, 0, _delegate.getDiagramRect().x - 1, getHeight());
             g.drawLine(_delegate.getHierarchyRect().x + _delegate.getHierarchyWidth() - 1, 0,
                     _delegate.getHierarchyRect().x + _delegate.getHierarchyWidth() - 1, getHeight());
 
             int upperYBound = _delegate.getDiagramRect().y;
             int lowerYBound = upperYBound + _delegate.getDiagramRect().height;
             if (g.getClipBounds() != null) {
                 upperYBound = g.getClipBounds().y;
                 lowerYBound = upperYBound + g.getClipBounds().height;
             }
             for (int r = _delegate.getFirstRow(); r <= _delegate.getFirstRow() + _delegate.getRowsDisplayed()
                     && r < _delegate.getRowCount(); r++) {
                 TimeBarRow row = _delegate.getRow(r);
                 int rowHeight = _delegate.getTimeBarViewState().getRowHeight(row);
                 // int y = (r - _delegate.getFirstRow()) * rowHeight + _delegate.getDiagramRect().y
                 // - _delegate.getFirstRowOffset();
                 int y = _delegate.yForRow(row);
                 if (y + rowHeight < 0) {
                     // Bypass rows with the bottom pixel above the drawing area
                     continue;
                 }
 
                 // row is drawn if either the beginning or the end is inside the
                 // clipping rect
                 // or if the upperBound is inside the row rect (clipping rect is
                 // inside the row rect
                 if ((y >= upperYBound && y <= lowerYBound)
                         || (y + rowHeight >= upperYBound && y + rowHeight <= lowerYBound)
                         || (upperYBound > y && upperYBound < y + rowHeight)) {
                     drawRow(g, y, rowHeight, _delegate.getRow(r),
                             _delegate.getSelectionModel().isSelected(_delegate.getRow(r)));
                     // draw gaps if a renderer is set
                     if (_gapRenderer != null) {
                         drawRowGaps(g, y, rowHeight, _delegate.getRow(r),
                                 _delegate.getSelectionModel().isSelected(_delegate.getRow(r)));
                     }
                 }
                 if (y + rowHeight > lowerYBound) {
                     // Omit all further checks if the row would be drawn off the bottom of the screen
                     break;
                 }
             }
             g.setClip(clipSave);
         }
 
         /**
          * Draw rows for vertical orientation.
          * 
          * @param g Graphics to use
          */
         private void drawRowsVertical(Graphics g) {
             g.setColor(Color.BLACK);
 
             // set the clipping to include only the heigth of the diagram rect
             Rectangle clipSave = g.getClipBounds();
             g.setClip(0, _delegate.getDiagramRect().y, getWidth(), _delegate.getDiagramRect().height);
 
             // separating line to the header
             // MAYBE coloro configurable
             g.drawLine(0, _delegate.getDiagramRect().y - 1, getWidth(), _delegate.getDiagramRect().y - 1);
             g.drawLine(0, _delegate.getHierarchyRect().y + _delegate.getHierarchyWidth() - 1, getWidth(),
                     _delegate.getHierarchyRect().y + _delegate.getHierarchyWidth() - 1);
 
             int leftXBound = _delegate.getDiagramRect().x;
             int rightXBound = leftXBound + _delegate.getDiagramRect().width;
             if (g.getClipBounds() != null) {
                 leftXBound = g.getClipBounds().x;
                 rightXBound = leftXBound + g.getClipBounds().width;
             }
 
             for (int r = _delegate.getFirstRow(); r <= _delegate.getFirstRow() + _delegate.getRowsDisplayed()
                     && r < _delegate.getRowCount(); r++) {
                 TimeBarRow row = _delegate.getRow(r);
                 int rowWidth = _delegate.getTimeBarViewState().getRowHeight(row);
                 // int x = (r - _delegate.getFirstRow()) * rowWidth + _delegate.getDiagramRect().x
                 // - _delegate.getFirstRowOffset();
 
                 int x = _delegate.yForRow(row);
                 if (x + rowWidth < 0) {
                     // Bypass columns with the right pixel to the left of the drawing area
                     continue;
                 }
 
                 // row is drawn if either the beginning or the end is inside the
                 // clipping rect
                 // or if the upperBound is inside the row rect (clipping rect is
                 // inside the row rect
                 if ((x >= leftXBound && x <= rightXBound)
                         || (x + rowWidth >= leftXBound && x + rowWidth <= rightXBound)
                         || (leftXBound > x && leftXBound < x + rowWidth)) {
                     drawRowVertical(g, x, rowWidth, _delegate.getRow(r),
                             _delegate.getSelectionModel().isSelected(_delegate.getRow(r)));
                     // draw gaps if a renderer is set
                     if (_gapRenderer != null) {
                         drawRowGapsVertical(g, x, rowWidth, _delegate.getRow(r), _delegate.getSelectionModel()
                                 .isSelected(_delegate.getRow(r)));
                     }
                 }
                 if (x + rowWidth > rightXBound) {
                     // Omit all further checks if the column would be drawn off the right of the screen
                     break;
                 }
             }
             g.setClip(clipSave);
         }
 
         /**
          * Draw a single row (horizontal).
          * 
          * @param g graphics
          * @param y starting pos y
          * @param height height
          * @param row row to draw
          * @param selected true if the row is selected
          */
         private void drawRow(Graphics g, int y, int height, TimeBarRow row, boolean selected) {
             // draw the row header
             drawRowHeader(g, y, height, row.getRowHeader(), selected);
             // draw the hierarchy area
             drawHierarchy(g, y, height, row, selected);
             // draw a line at the bottom of the row if enabled
             Rectangle diagramRect = _delegate.getDiagramRect();
             if (_delegate.getDrawRowGrid()) {
                 _miscRenderer.drawRowGridLine(g, diagramRect.x, y + height - 1, diagramRect.x + diagramRect.width, y
                         + height - 1);
             }
 
             // draw a background if selected or highlighted
             // highlighting is at higher priority than selection
             if (selected || _delegate.getHighlightedRow() == row) {
                 boolean highlighted = _delegate.getHighlightedRow() == row;
                 int markerHeight = height;
                 // calculate height for clipping
                 if (y + markerHeight > diagramRect.y + diagramRect.height) {
                     markerHeight = markerHeight - (y + markerHeight - (diagramRect.y + diagramRect.height));
                 }
                 _miscRenderer.drawRowBackground(g, diagramRect.x, y,
                         getWidth() - _delegate.getYAxisWidth() - _delegate.getHierarchyWidth(), markerHeight, selected,
                         highlighted);
 
             }
             // use the clip bounds (if given) to shorten the region to be
             // painted
             JaretDate start = _delegate.getStartDate();
             JaretDate end = _delegate.getEndDate();
             if (g.getClipBounds() != null) {
                 start = _delegate.dateForCoord(g.getClipBounds().x);
                 end = _delegate.dateForCoord(g.getClipBounds().x + g.getClipBounds().width);
             }
             // List intervals = row.getIntervals(_startDate, _endDate);
             List<Interval> intervals = row.getIntervals(start, end);
             for (Interval i : intervals) {
                 // apply filter on intervals if set
                 if (_delegate.getIntervalFilter() == null || _delegate.getIntervalFilter().isInResult(i)) {
                     if (_delegate.getTimeBarViewState().getDrawOverlapping(row)) {
                         drawInterval(g, y, height, i, _delegate.getSelectionModel().isSelected(i), null, row);
                     } else {
                         drawInterval(g, y, height, i, _delegate.getSelectionModel().isSelected(i), _delegate
                                 .getOverlapStrategy().getOverlapInfo(row, i), row);
                     }
                 }
             }
         }
 
         /**
          * Draw a single row (vertical).
          * 
          * @param g graphics
          * @param x starting pos x
          * @param width width
          * @param row row to draw
          * @param selected true if the row is selected
          */
         private void drawRowVertical(Graphics g, int x, int width, TimeBarRow row, boolean selected) {
             // draw the row header
             drawRowHeaderVertical(g, x, width, row.getRowHeader(), selected);
             // draw the hierarchy area
             drawHierarchyVertical(g, x, width, row, selected);
             // draw a line at the bottom of the row if enabled
             Rectangle diagramRect = _delegate.getDiagramRect();
             if (_delegate.getDrawRowGrid()) {
                 _miscRenderer.drawRowGridLine(g, x + width - 1, diagramRect.y, x + width - 1, diagramRect.y
                         + diagramRect.height);
             }
 
             // draw a background if selected or highlighted
             // highlighting is at higher priority than selection
             if (selected || _delegate.getHighlightedRow() == row) {
                 boolean highlighted = _delegate.getHighlightedRow() == row;
                 int markerWidth = width;
                 // calculate width for clipping
                 if (x + markerWidth > diagramRect.x + diagramRect.width) {
                     markerWidth = markerWidth - (x + markerWidth - (diagramRect.x + diagramRect.width));
                 }
                 _miscRenderer.drawRowBackground(g, x, diagramRect.y, markerWidth,
                         getHeight() - _delegate.getYAxisWidth() - _delegate.getHierarchyWidth(), selected, highlighted);
             }
             // use the clip bounds (if given) to shorten the region to be
             // painted
             JaretDate start = _delegate.getStartDate();
             JaretDate end = _delegate.getEndDate();
             if (g.getClipBounds() != null) {
                 start = _delegate.dateForCoord(g.getClipBounds().y);
                 end = _delegate.dateForCoord(g.getClipBounds().y + g.getClipBounds().height);
             }
             List<Interval> intervals = row.getIntervals(start, end);
             for (Interval i : intervals) {
                 // apply filter on intervals if set
                 if (_delegate.getIntervalFilter() == null || _delegate.getIntervalFilter().isInResult(i)) {
                     if (_delegate.getTimeBarViewState().getDrawOverlapping(row)) {
                         drawIntervalVertical(g, x, width, i, _delegate.getSelectionModel().isSelected(i), null, row);
                     } else {
                         drawIntervalVertical(g, x, width, i, _delegate.getSelectionModel().isSelected(i), _delegate
                                 .getOverlapStrategy().getOverlapInfo(row, i), row);
                     }
                 }
             }
         }
 
         /**
          * Draws the gaps beetwenn intervals (horizontal). The selection of the bordering interval sis done inside this
          * method. TODO maybe move the selection routine out TODO call for edges i.e. one interval is null
          * 
          * @param g Graphics for painting
          * @param y y coordinate
          * @param height rowHeight
          * @param row TimeBarRow to be painted
          * @param selected selection status of the row (not used)
          */
         private void drawRowGaps(Graphics g, int y, int height, TimeBarRow row, boolean selected) {
             // use the clip bounds (if given) to shorten the region to be
             // painted
             JaretDate start = _delegate.getStartDate();
             JaretDate end = _delegate.getEndDate();
             if (g.getClipBounds() != null) {
                 start = _delegate.dateForCoord(g.getClipBounds().x);
                 end = _delegate.dateForCoord(g.getClipBounds().x + g.getClipBounds().width);
             }
             // for the gaps we need a minimum of two intervals
             // those has to be in the displayed intervals, so we apply the
             // filter first (if set) and do the selection
             // ourself. The alogorithm is highly dependet on the ordering of the
             // list! This should be guaranteed by the model
             List<Interval> intervals = new ArrayList<Interval>();
             Interval firstInterval = null;
             for (Interval interval : row.getIntervals()) {
                 if (_delegate.getIntervalFilter() == null || _delegate.getIntervalFilter().isInResult(interval)) {
                     if (interval.getEnd().compareTo(start) < 0) {
                         // before the starting date: remember the nearest
                         // interval
                         if (firstInterval == null
                                 || start.diffSeconds(interval.getEnd()) < start.diffSeconds(firstInterval.getEnd())) {
                             firstInterval = interval;
                         }
                     } else if (interval.contains(start)) {
                         // direct hit
                         firstInterval = interval;
                     } else {
                         // in or after the starting date: copy the intervals
                         // until we have one behind the end date or
                         // a direct hit
                         // First of all, add the firstInterval to the resulting
                         // list once
                         if (firstInterval != null) {
                             intervals.add(firstInterval);
                             firstInterval = null; // we don't need the
                             // reference
                             // and by setting it to null
                             // we do not add it twice
                         }
                         if (interval.contains(end)) {
                             // direct hit
                             intervals.add(interval);
                             break; // finished
                         }
                         if (interval.getBegin().compareTo(end) > 0) {
                             intervals.add(interval);
                             break; // found an interval beginning behind the
                             // end
                             // date
                         } else {
                             // all between: add
                             intervals.add(interval);
                         }
                     }
                 }
             }
             Interval lastInterval = null;
             for (Interval i : intervals) {
                 // draw gap if there is lastInterval
                 if (lastInterval != null) {
                     drawGap(g, row, y, height, lastInterval, i);
                 }
                 // remember last interval for next turn
                 lastInterval = i;
             }
         }
 
         /**
          * Draws the gaps beetwenn intervals (horizontal). The selection of the bordering interval sis done inside this
          * method. TODO maybe move the selection routine out TODO call for edges i.e. one interval is null
          * 
          * @param g Graphics for painting
          * @param x x coordinate
          * @param width rowHeight
          * @param row TimeBarRow to be painted
          * @param selected selection status of the row (not used)
          */
         private void drawRowGapsVertical(Graphics g, int x, int width, TimeBarRow row, boolean selected) {
             // use the clip bounds (if given) to shorten the region to be
             // painted
             JaretDate start = _delegate.getStartDate();
             JaretDate end = _delegate.getEndDate();
             if (g.getClipBounds() != null) {
                 start = _delegate.dateForCoord(g.getClipBounds().y);
                 end = _delegate.dateForCoord(g.getClipBounds().y + g.getClipBounds().height);
             }
             // for the gaps we need a minimum of two intervals
             // those has to be in the displayed intervals, so we apply the
             // filter first (if set) and do the selection
             // ourself. The alogorithm is highly dependet on the ordering of the
             // list! This should be guaranteed by the model
             List<Interval> intervals = new ArrayList<Interval>();
             Interval firstInterval = null;
             for (Interval interval : row.getIntervals()) {
                 if (_delegate.getIntervalFilter() == null || _delegate.getIntervalFilter().isInResult(interval)) {
                     if (interval.getEnd().compareTo(start) < 0) {
                         // before the starting date: remember the nearest
                         // interval
                         if (firstInterval == null
                                 || start.diffSeconds(interval.getEnd()) < start.diffSeconds(firstInterval.getEnd())) {
                             firstInterval = interval;
                         }
                     } else if (interval.contains(start)) {
                         // direct hit
                         firstInterval = interval;
                     } else {
                         // in or after the starting date: copy the intervals
                         // until we have one behind the end date or
                         // a direct hit
                         // First of all, add the firstInterval to the resulting
                         // list once
                         if (firstInterval != null) {
                             intervals.add(firstInterval);
                             firstInterval = null; // we don't need the
                             // reference
                             // and by setting it to null
                             // we do not add it twice
                         }
                         if (interval.contains(end)) {
                             // direct hit
                             intervals.add(interval);
                             break; // finished
                         }
                         if (interval.getBegin().compareTo(end) > 0) {
                             intervals.add(interval);
                             break; // found an interval beginning behind the
                             // end
                             // date
                         } else {
                             // all between: add
                             intervals.add(interval);
                         }
                     }
                 }
             }
             Interval lastInterval = null;
             for (Interval i : intervals) {
                 // draw gap if there is lastInterval
                 if (lastInterval != null) {
                     drawGapVertical(g, row, x, width, lastInterval, i);
                 }
                 // remember last interval for next turn
                 lastInterval = i;
             }
         }
 
         /**
          * Draw a single Interval (horizontal).
          * 
          * @param g Graphics to paint with
          * @param y starting y
          * @param height height for painting
          * @param i interval to be painted
          * @param selected true if the interval should be drawn selecetd
          * @param oiInfo overlap information or <code>null</code> if intervals are drawn overlapping
          * @param row row of the interval
          */
         private void drawInterval(Graphics g, int y, int height, Interval i, boolean selected, OverlapInfo oiInfo,
                 TimeBarRow row) {
             TimeBarRenderer renderer = getRenderer(i.getClass());
             if (renderer == null) {
                 throw new RuntimeException("no suitable renderer registered for " + i.getClass().getName());
             }
 
             boolean overlapping = oiInfo != null && oiInfo.maxOverlapping > 0;
 
                         
             if (oiInfo != null) {
                 float exactHeight;
                 // correct the bounds when overlapping
                 if (!_delegate.getUseUniformHeight()) {
                     exactHeight = 1.0f * _delegate.getTimeBarViewState().getRowHeight(row)
                         / (oiInfo.maxOverlapping + 1);
                 } else {
                     exactHeight = 1.0f * _delegate.getTimeBarViewState().getRowHeight(row)
                         / (_delegate.getOverlapStrategy().getMaxOverlapCount(row));
                 }
                 int yOffset = (int)(oiInfo.pos * exactHeight);
                 y += yOffset;
                 height = (int)((oiInfo.pos + 1) * exactHeight) - yOffset;
             }
             
 // old int code 
             // TODO take the fix (above) to SWT
 //            if (oiInfo != null) {
 //                // correct the bounds when overlapping
 //                if (!_delegate.getUseUniformHeight()) {
 //                    height = _delegate.getTimeBarViewState().getRowHeight(row) / (oiInfo.maxOverlapping + 1);
 //                } else {
 //                    height = _delegate.getTimeBarViewState().getRowHeight(row)
 //                            / (_delegate.getOverlapStrategy().getMaxOverlapCount(row));
 //                }
 //                y = y + oiInfo.pos * height;
 //            }
 
             Component component = renderer.getTimeBarRendererComponent(_timeBarViewer, i, selected, overlapping);
             int x = _delegate.xForDate(i.getBegin());
             int width = _delegate.xForDate(i.getEnd()) - x;
 
             // check preferred drawing bounds
             Rectangle intervalDrawingArea = new Rectangle(x, y, width, height);
             Rectangle drawingArea = renderer.getPreferredDrawingBounds(intervalDrawingArea, _delegate, i, selected,
                     overlapping);
             x = drawingArea.x;
             width = drawingArea.width;
             y = drawingArea.y;
             height = drawingArea.height;
 
             component.setBounds(x, y, width, height);
             Graphics gg = g.create(x, y, width, height);
             // calculate height for clipping
             Rectangle diagramRect = _delegate.getDiagramRect();
             if (y + height > diagramRect.y + diagramRect.height) {
                 height = height - (y + height - (diagramRect.y + diagramRect.height));
             }
             int upperClipBound = 0;
             if (y < diagramRect.y) {
                 upperClipBound = diagramRect.y - y;
             }
 
             if (x + width > diagramRect.x + diagramRect.width) {
                 width = width - (x + width - (diagramRect.x + diagramRect.width));
             }
             // calc x clipping and set clipping rect
 
 //            Rectangle cr = new Rectangle(x < diagramRect.x ? diagramRect.x - x : 0, upperClipBound, diagramRect.width,
 //                    height);
 //
 //            gg.setClip(cr);
 
             int clipX = x < diagramRect.x ? diagramRect.x - x : 0;
             int clipWidth = x < diagramRect.x ? Math.max(0, width - (diagramRect.x - x)) : width;
             gg.setClip(clipX, upperClipBound, clipWidth, height);
             
             component.paint(gg);
             gg.dispose();
         }
 
         /**
          * Draw a single Interval (vertical).
          * 
          * @param g Graphics to paint with
          * @param x starting x
          * @param width width for painting
          * @param i interval to be painted
          * @param selected true if the interval should be drawn selecetd
          * @param oiInfo overlap information or <code>null</code> if intervals are drawn overlapping
          * @param row row of the interval
          */
         private void drawIntervalVertical(Graphics g, int x, int width, Interval i, boolean selected,
                 OverlapInfo oiInfo, TimeBarRow row) {
             TimeBarRenderer renderer = getRenderer(i.getClass());
             if (renderer == null) {
                 throw new RuntimeException("no suitable renderer registered");
             }
 
             boolean overlapping = oiInfo != null && oiInfo.maxOverlapping > 0;
 
             if (oiInfo != null) {
                 // correct the bounds when overlapping
                 if (!_delegate.getUseUniformHeight()) {
                     width = _delegate.getTimeBarViewState().getRowHeight(row) / (oiInfo.maxOverlapping + 1);
                 } else {
                     width = _delegate.getTimeBarViewState().getRowHeight(row)
                             / (_delegate.getOverlapStrategy().getMaxOverlapCount(row));
                 }
                 x = x + oiInfo.pos * width;
             }
 
             Component component = renderer.getTimeBarRendererComponent(_timeBarViewer, i, selected, overlapping);
             int y = _delegate.xForDate(i.getBegin());
             int height = _delegate.xForDate(i.getEnd()) - y;
 
             // check preferred drawing bounds
             Rectangle intervalDrawingArea = new Rectangle(x, y, width, height);
             Rectangle drawingArea = renderer.getPreferredDrawingBounds(intervalDrawingArea, _delegate, i, selected,
                     overlapping);
             x = drawingArea.x;
             width = drawingArea.width;
             y = drawingArea.y;
             height = drawingArea.height;
 
             component.setBounds(x, y, width, height);
             Graphics gg = g.create(x, y, width, height);
             // calculate height for clipping
             Rectangle diagramRect = _delegate.getDiagramRect();
             if (x + width > diagramRect.x + diagramRect.width) {
                 width = width - (x + width - (diagramRect.x + diagramRect.width));
             }
             int upperClipBound = 0;
             if (x < diagramRect.x) {
                 upperClipBound = diagramRect.x - x;
             }
 
             // calculate height for clipping
             if (y + height > diagramRect.y + diagramRect.height) {
                 height = height - (y + height - (diagramRect.y + diagramRect.height));
             }
             // calc x clipping and set clipping rect
 //            Rectangle cr = new Rectangle(upperClipBound, y < diagramRect.y ? diagramRect.y - y : 0, width,
 //                    diagramRect.height);
 //
 //            gg.setClip(cr);
 
             int clipY = y < diagramRect.y ? diagramRect.y - y : 0;
             int clipHeight = y < diagramRect.y ? Math.max(0, height - (diagramRect.y - y)) : height;
             gg.setClip(upperClipBound, clipY, width, clipHeight);
             
             
             
             component.paint(gg);
             gg.dispose();
         }
 
         /**
          * Draw the gap beetween to intervals using a GapRenderer (horizontal).
          * 
          * @param g Graphics for painting
          * @param row TimeBarRow the gap "belongs to"
          * @param y starting ccordinate y
          * @param height height for painting
          * @param i1 earlier interval
          * @param i2 later interval
          */
         private void drawGap(Graphics g, TimeBarRow row, int y, int height, Interval i1, Interval i2) {
             Component component = _gapRenderer.getTimeBarGapRendererComponent(_timeBarViewer, row, i1, i2);
             int x = _delegate.xForDate(i1.getEnd());
             int width = _delegate.xForDate(i2.getBegin()) - x;
             // handle minimum width requirements of the gap renderer
             if (_gapRenderer.getMinimumWidth() > 0) {
                 if (width < _gapRenderer.getMinimumWidth()) {
                     int diff = _gapRenderer.getMinimumWidth() - width;
                     width += diff;
                     x -= diff / 2;
                 }
             }
             // TODO clipping width
             component.setBounds(x, y, width, height);
             Graphics gg = g.create(x, y, width, height);
             // calculate height for clipping
             Rectangle diagramRect = _delegate.getDiagramRect();
             if (y + height > diagramRect.y + diagramRect.height) {
                 height = height - (y + height - (diagramRect.y + diagramRect.height));
             }
             int upperClipBound = 0;
             if (y < diagramRect.y) {
                 upperClipBound = diagramRect.y - y;
             }
 
             // calc x clipping and set clipping rect
             gg.setClip(x < diagramRect.x ? diagramRect.x - x : 0, upperClipBound, width, height);
             component.paint(gg);
             gg.dispose();
         }
 
         /**
          * Draw the gap beetween to intervals using a GapRenderer (vertical).
          * 
          * @param g Graphics for painting
          * @param row TimeBarRow the gap "belongs to"
          * @param x starting cordinate x
          * @param width width for painting
          * @param i1 earlier interval
          * @param i2 later interval
          */
         private void drawGapVertical(Graphics g, TimeBarRow row, int x, int width, Interval i1, Interval i2) {
             Component component = _gapRenderer.getTimeBarGapRendererComponent(_timeBarViewer, row, i1, i2);
             int y = _delegate.xForDate(i1.getEnd());
             int height = _delegate.xForDate(i2.getBegin()) - y;
             // handle minimum width requirements of the gap renderer
             if (_gapRenderer.getMinimumWidth() > 0) {
                 if (height < _gapRenderer.getMinimumWidth()) {
                     int diff = _gapRenderer.getMinimumWidth() - height;
                     height += diff;
                     y -= diff / 2;
                 }
             }
             // TODO clipping width
             component.setBounds(x, y, width, height);
             Graphics gg = g.create(x, y, width, height);
             // calculate height for clipping
             Rectangle diagramRect = _delegate.getDiagramRect();
             if (x + width > diagramRect.x + diagramRect.width) {
                 width = width - (x + width - (diagramRect.x + diagramRect.width));
             }
             int upperClipBound = 0;
             if (x < diagramRect.x) {
                 upperClipBound = diagramRect.x - x;
             }
 
             // calc x clipping and set clipping rect
             gg.setClip(upperClipBound, y < diagramRect.y ? diagramRect.y - y : 0, width, height);
             component.paint(gg);
             gg.dispose();
         }
 
         /**
          * Draw a row header (horizontal). If the header claims a smaller preferred size than the rowheight it is
          * vertically centered.
          * 
          * @param g Graphics
          * @param y upper bound
          * @param height row height
          * @param header the header object
          * @param selected true if the row is selected
          */
         private void drawRowHeader(Graphics g, int y, int height, TimeBarRowHeader header, boolean selected) {
             // draw only if a header renderer is set and the width is >0
             if (_headerRenderer != null && _delegate.getYAxisWidth() > 0) {
                 JComponent component = _headerRenderer.getHeaderRendererComponent(_timeBarViewer, header, selected);
                 int x = _delegate.getYAxisRect().x;
                 int width = _delegate.getYAxisWidth() - 1;
                 Rectangle diagramRect = _delegate.getDiagramRect();
                 Graphics gg;
                 int prefHeight = component.getPreferredSize().height;
                 if (prefHeight < height) {
                     int hCor = (height - prefHeight) / 2;
                     gg = g.create(x, y + hCor, width, prefHeight);
                     component.setBounds(x, y + hCor, width, prefHeight);
                     int upperClipBound = 0;
                     if (y + hCor < diagramRect.y) {
                         upperClipBound = diagramRect.y - y - hCor;
                     }
                     if (y + hCor + height > diagramRect.y + diagramRect.height) {
                         prefHeight = prefHeight - (y + hCor + prefHeight - (diagramRect.y + diagramRect.height));
                     }
                     // calc x clipping and set clipping rect
                     gg.setClip(0, upperClipBound, width, prefHeight);
                 } else {
                     gg = g.create(x, y, width, height);
                     component.setBounds(x, y, width, height);
                     int upperClipBound = 0;
                     if (y < diagramRect.y) {
                         upperClipBound = diagramRect.y - y;
                     }
 
                     if (y + height > diagramRect.y + diagramRect.height) {
                         height = height - (y + height - (diagramRect.y + diagramRect.height));
                     }
                     // calc x clipping and set clipping rect
                     gg.setClip(x, upperClipBound, width, height);
                 }
                 component.paint(gg);
                 gg.dispose();
             }
         }
 
         /**
          * Draw a row header (vertical). If the hedare claims a smaller preferred size than the rowheight it is
          * vertically centered.
          * 
          * @param g Graphics
          * @param x left bound
          * @param width width
          * @param header the header object
          * @param selected true if the row is selected
          */
         private void drawRowHeaderVertical(Graphics g, int x, int width, TimeBarRowHeader header, boolean selected) {
             // draw only if a header renderer is set and the width is >0
             if (_headerRenderer != null && _delegate.getYAxisWidth() > 0) {
                 JComponent component = _headerRenderer.getHeaderRendererComponent(_timeBarViewer, header, selected);
                 int y = _delegate.getYAxisRect().y;
                 int height = _delegate.getYAxisWidth() - 1;
                 Rectangle diagramRect = _delegate.getDiagramRect();
                 Graphics gg;
                 int prefWidth = component.getPreferredSize().width;
                 if (prefWidth < width) {
                     int wCor = (width - prefWidth) / 2;
                     gg = g.create(x + wCor, y, prefWidth, height);
                     component.setBounds(x + wCor, y, prefWidth, height);
                     int upperClipBound = 0;
                     if (x + wCor < diagramRect.x) {
                         upperClipBound = diagramRect.x - x - wCor;
                     }
                     if (x + wCor + width > diagramRect.x + diagramRect.width) {
                         prefWidth = prefWidth - (x + wCor + prefWidth - (diagramRect.x + diagramRect.width));
                     }
                     // calc y clipping and set clipping rect
                     gg.setClip(upperClipBound, 0, prefWidth, height);
                 } else {
                     gg = g.create(x, y, width, height);
                     component.setBounds(x, y, width, height);
                     int upperClipBound = 0;
                     if (x < diagramRect.x) {
                         upperClipBound = diagramRect.x - x;
                     }
 
                     if (x + width > diagramRect.x + diagramRect.width) {
                         width = width - (x + width - (diagramRect.x + diagramRect.width));
                     }
                     // calc y clipping and set clipping rect
                     gg.setClip(upperClipBound, 0, width, height);
                 }
                 component.paint(gg);
                 gg.dispose();
             }
         }
 
         /**
          * Draw the hierachy section for a row/node (horizontal).
          * 
          * @param g graphics
          * @param y begin y
          * @param height height of a row
          * @param row the row
          * @param selected true if the row is selected
          */
         private void drawHierarchy(Graphics g, int y, int height, TimeBarRow row, boolean selected) {
             // draw only if a hierarchy renderer is set and the width is >0
             if (_hierarchyRenderer != null && _delegate.getHierarchyWidth() > 0) {
                 int level = 0;
                 int depth = 0;
                 boolean expanded = false;
                 boolean leaf = true;
                 if (row instanceof TimeBarNode) {
                     TimeBarNode node = (TimeBarNode) row;
                     if (_delegate.getHierarchicalViewState().isExpanded(node)) {
                         expanded = true;
                     }
                     leaf = node.getChildren().size() == 0;
                     level = node.getLevel();
                     depth = _delegate.getHierarchicalModel().getDepth();
                 }
 
                 int x = _delegate.getHierarchyRect().x;
                 int width = _delegate.getHierarchyWidth() - 1;
 
                 JComponent component = _hierarchyRenderer.getHierarchyRendererComponent(_timeBarViewer, row, selected,
                         expanded, leaf, level, depth);
                 Rectangle diagramRect = _delegate.getDiagramRect();
                 Graphics gg;
 
                 gg = g.create(x, y, width, height);
                 component.setBounds(x, y, width, height);
                 if (y + height > diagramRect.y + diagramRect.height) {
                     height = height - (y + height - (diagramRect.y + diagramRect.height));
                 }
                 int upperClipBound = 0;
                 if (y < diagramRect.y) {
                     upperClipBound = diagramRect.y - y;
                 }
                 // calc x clipping and set clipping rect
                 gg.setClip(x, upperClipBound, width, height);
 
                 component.paint(gg);
                 gg.dispose();
             }
 
         }
 
         /**
          * Draw the hierachy section for a row/node (vertical).
          * 
          * @param g graphics
          * @param x begin x
          * @param width width of a col
          * @param row the row
          * @param selected true if the row is selected
          */
         private void drawHierarchyVertical(Graphics g, int x, int width, TimeBarRow row, boolean selected) {
             // draw only if a hierarchy renderer is set and the width is >0
             if (_hierarchyRenderer != null && _delegate.getHierarchyWidth() > 0) {
                 int level = 0;
                 int depth = 0;
                 boolean expanded = false;
                 boolean leaf = true;
                 if (row instanceof TimeBarNode) {
                     TimeBarNode node = (TimeBarNode) row;
                     if (_delegate.getHierarchicalViewState().isExpanded(node)) {
                         expanded = true;
                     }
                     leaf = node.getChildren().size() == 0;
                     level = node.getLevel();
                     depth = _delegate.getHierarchicalModel().getDepth();
                 }
 
                 int y = _delegate.getHierarchyRect().y;
                 int height = _delegate.getHierarchyWidth() - 1;
 
                 JComponent component = _hierarchyRenderer.getHierarchyRendererComponent(_timeBarViewer, row, selected,
                         expanded, leaf, level, depth);
                 Rectangle diagramRect = _delegate.getDiagramRect();
                 Graphics gg;
 
                 gg = g.create(x, y, width, height);
                 component.setBounds(x, y, width, height);
 
                 if (x + width > diagramRect.x + diagramRect.width) {
                     width = width - (x + width - (diagramRect.x + diagramRect.width));
                 }
                 int upperClipBound = 0;
                 if (x < diagramRect.x) {
                     upperClipBound = diagramRect.x - x;
                 }
                 // calc y clipping and set clipping rect
                 gg.setClip(upperClipBound, y, width, height);
 
                 component.paint(gg);
                 gg.dispose();
             }
 
         }
 
         /**
          * {@inheritDoc}
          */
         public Dimension getPreferredSize() {
             return new Dimension(PREFWIDTH, PREFHEIGHT);
         }
 
         // *** MouseListener
         /**
          * {@inheritDoc}
          */
         public void mouseEntered(MouseEvent e) {
         }
 
         /**
          * {@inheritDoc}
          */
         public void mouseExited(MouseEvent e) {
         }
 
         /**
          * {@inheritDoc}
          */
         public void mousePressed(MouseEvent e) {
             _delegate.mousePressed(e.getX(), e.getY(), e.isPopupTrigger(), e.getModifiersEx());
         }
 
         /**
          * {@inheritDoc}
          */
         public void mouseClicked(MouseEvent e) {
         }
 
         /**
          * {@inheritDoc}
          */
         public void mouseReleased(MouseEvent e) {
             boolean popupTrigger = e.isPopupTrigger();
             if (!popupTrigger && _requiresPopupTriggerCheck) {
                 popupTrigger = e.getButton() == MouseEvent.BUTTON3;
             }
 
             _delegate.mouseReleased(e.getX(), e.getY(), popupTrigger, e.getModifiersEx());
         }
 
         // *** End of MouseListener
 
         // *** MouseMotionListener
         /**
          * {@inheritDoc}
          */
         public void mouseDragged(MouseEvent e) {
             _delegate.mouseDragged(e.getX(), e.getY(), e.getModifiersEx());
         }
 
         /**
          * {@inheritDoc}
          */
         public void mouseMoved(MouseEvent e) {
             _delegate.mouseMoved(e.getX(), e.getY());
         }
 
         // *** End of MouseMotionListener
         // *** MouseWheelListener
         /**
          * {@inheritDoc}
          */
         public void mouseWheelMoved(MouseWheelEvent e) {
             if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
                 int val = e.getUnitsToScroll();
                 if (_delegate.getXAxisRect() != null && e.getY() > _delegate.getXAxisRect().y
                         && e.getY() < _delegate.getXAxisRect().y + _delegate.getXAxisRect().height) {
                     // on the xaxis
                     _xScrollBar.setValue(_xScrollBar.getValue() + val * _xScrollBar.getModel().getExtent() / 5);
                 } else {
                     // y axis
                     _yScrollBar.getModel().setValue(_yScrollBar.getModel().getValue() + val * getRowHeight()); // TODO check configurabilty
                 }
             }
         }
         // *** End of MouseWheelListener
     }
 
     /**
      * @return Returns the timeScaleRenderer.
      */
     public TimeScaleRenderer getTimeScaleRenderer() {
         return _timeScaleRenderer;
     }
 
     /**
      * Set a renderer for the x axis. The Height for the x axis will be set to the preferred height of the renderer if
      * the renderer supplies one.
      * 
      * @param timeScaleRenderer The timeScaleRenderer to set.
      */
     public void setTimeScaleRenderer(TimeScaleRenderer timeScaleRenderer) {
         _timeScaleRenderer = timeScaleRenderer;
         if (_timeScaleRenderer != null && _timeScaleRenderer.getHeight() != -1) {
             // if the renderer announces a preferred height, get it and set it
             _delegate.setXAxisHeight(_timeScaleRenderer.getHeight());
         }
         // maybe the new time scale renderer is not a TickProvider ... tell the grid rederer
         if (_gridRenderer != null) {
             _gridRenderer.setTickProvider(null);
         }
         if (_timeScaleRenderer != null && _gridRenderer != null && _timeScaleRenderer instanceof ITickProvider
                 && _delegate.getTimeScalePosition() != TimeBarViewerInterface.TIMESCALE_POSITION_NONE) {
             _gridRenderer.setTickProvider((ITickProvider) _timeScaleRenderer);
         }
         _diagram.safeRepaint();
     }
 
     /**
      * Get the current misc renderer.
      * 
      * @return the misc renderer
      */
     public IMiscRenderer getMiscRenderer() {
         return _miscRenderer;
     }
 
     /**
      * Set the misc renderer to be used for rendering some parts/elements in the viewer.
      * 
      * @param miscRenderer the renderer to use
      */
     public void setMiscRenderer(IMiscRenderer miscRenderer) {
         _miscRenderer = miscRenderer;
         _diagram.safeRepaint();
     }
 
     /**
      * Retrieve the renderer that is currently used to render the title area.
      * 
      * @return the renderer or <code>null</code> if no renderer is set.
      */
     public ITitleRenderer getTitleRenderer() {
         return _titleRenderer;
     }
 
     /**
      * Set the title renderer.
      * 
      * @param titleRenderer the new renderer or <code>null</code> to disable titel rendering.
      */
     public void setTitleRenderer(ITitleRenderer titleRenderer) {
         _titleRenderer = titleRenderer;
         _diagram.safeRepaint();
     }
 
     /**
      * Retrieve the relation renderer currently set.
      * 
      * @return the relation renderer or <code>null</code> if none is set.
      */
     public IRelationRenderer getRelationRenderer() {
         return _relationRenderer;
     }
 
     /**
      * Set the relation renderer to use.
      * 
      * @param relationRenderer the renderer or <code>null</code> to disable relation rendering.
      */
     public void setRelationRenderer(IRelationRenderer relationRenderer) {
         _relationRenderer = relationRenderer;
         _diagram.safeRepaint();
     }
 
     /**
      * Retrieve the configured marker renderer.
      * 
      * @return the marker renderer
      */
     public IMarkerRenderer getMarkerRenderer() {
         return _markerRenderer;
     }
 
     /**
      * Set the marker renderer to be used.
      * 
      * @param markerRenderer the marker renderer to be used.
      */
     public void setMarkerRenderer(IMarkerRenderer markerRenderer) {
         _markerRenderer = markerRenderer;
         _diagram.safeRepaint();
     }
 
     /**
      * Get the current global assistant renderer.
      * 
      * @return the renderer currently in use
      */
     public IGlobalAssistantRenderer getGlobalAssistantRenderer() {
         return _globalAssistantRenderer;
     }
 
     /**
      * Set a gloabl assistant renederer.
      * 
      * @param globalAssistantRenderer the renderer
      */
     public void setGlobalAssistantRenderer(IGlobalAssistantRenderer globalAssistantRenderer) {
         _globalAssistantRenderer = globalAssistantRenderer;
         _diagram.safeRepaint();
     }
 
     /**
      * @return Returns the gridRenderer.
      */
     public GridRenderer getGridRenderer() {
         return _gridRenderer;
     }
 
     /**
      * @param gridRenderer The gridRenderer to set.
      */
     public void setGridRenderer(GridRenderer gridRenderer) {
         _gridRenderer = gridRenderer;
         // set the tick provider on the grid renderer
         if (_gridRenderer != null && _timeScaleRenderer != null && _timeScaleRenderer instanceof ITickProvider) {
             _gridRenderer.setTickProvider((ITickProvider) _timeScaleRenderer);
         }
         _diagram.safeRepaint();
     }
 
     /**
      * @return Returns the gapRenderer.
      */
     public TimeBarGapRenderer getGapRenderer() {
         return _gapRenderer;
     }
 
     /**
      * @param gapRenderer The gapRenderer to set.
      */
     public void setGapRenderer(TimeBarGapRenderer gapRenderer) {
         _gapRenderer = gapRenderer;
         _diagram.safeRepaint();
     }
 
     /**
      * Register a popup menu for a given interval class.
      * 
      * @param clazz class that the menu is for
      * @param popup popup menu to show
      */
     public void registerPopupMenu(Class<? extends Interval> clazz, JPopupMenu popup) {
         if (_registeredPopupMenues == null) {
             _registeredPopupMenues = new HashMap<Class<? extends Interval>, JPopupMenu>();
         }
         _registeredPopupMenues.put(clazz, popup);
     }
 
     /**
      * Retrieve the popup menu registered for a given interval class.
      * 
      * @param clazz class in question
      * @return menu or <code>null</code>
      */
     public JPopupMenu getPopupMenu(Class<? extends Interval> clazz) {
         if (_registeredPopupMenues == null) {
             return null;
         }
         JPopupMenu result = null;
         result = _registeredPopupMenues.get(clazz);
         if (result != null) {
             return result;
         }
 
         // direct interfaces
         Class<?>[] interfaces = clazz.getInterfaces();
         for (Class<?> c : interfaces) {
             result = _registeredPopupMenues.get(c);
             if (result != null) {
                 return result;
             }
         }
 
         // superclasses
         Class<?> sc = clazz.getSuperclass();
 
         while (sc != null) {
             result = _registeredPopupMenues.get(sc);
             if (result != null) {
                 return result;
             }
             // interfaces of the superclass
             Class<?>[] scinterfaces = sc.getInterfaces();
             for (Class<?> c : scinterfaces) {
                 result = _registeredPopupMenues.get(c);
                 if (result != null) {
                     return result;
                 }
             }
             sc = sc.getSuperclass();
         }
 
         return result;
     }
 
     /**
      * {@inheritDoc}
      */
     public void firePropertyChangeX(String propName, Object oldVal, Object newVal) {
         firePropertyChange(propName, oldVal, newVal);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean timeBarContains(Interval interval, Rectangle intervalRect, int x, int y, boolean overlapping) {
         JComponent component = getIntervalComponent(interval, intervalRect, overlapping);
         return component.contains(x, y);
     }
 
     /**
      * {@inheritDoc}
      */
     public Rectangle timeBarContainingRect(Interval interval, Rectangle intervalRect, boolean overlapping) {
         JComponent component = getIntervalComponent(interval, intervalRect);
         // get the containing rect or - if not set by the renderer -
         // use the component bounds
         Rectangle containingRect = (Rectangle) component.getClientProperty(TimeBarRenderer.CONTAINING_RECTANGLE);
         return containingRect;
     }
 
     /**
      * {@inheritDoc}
      */
     public void setCursor(int cursorType) {
         setCursor(Cursor.getPredefinedCursor(cursorType));
     }
 
     /**
      * {@inheritDoc}
      */
     public String getIntervalToolTipText(Interval interval, Rectangle intervalRect, int x, int y) {
         JComponent component = getIntervalComponent(interval, intervalRect);
         // String tooltip = component.getToolTipText(new MouseEvent(this, 0, 0,
         // 0, x - component.getX(), y - component.getY(), 0, false));
         String tooltip = component.getToolTipText(new MouseEvent(this, 0, 0, 0, x, y, 0, false));
         return tooltip;
     }
 
     /**
      * {@inheritDoc}
      */
     public JaretDate getStartDate() {
         return _delegate.getStartDate();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setStartDate(JaretDate startDate) {
         _delegate.setStartDate(startDate);
     }
 
     /**
      * {@inheritDoc}
      */
     public JaretDate getMinDate() {
         return _delegate.getMinDate();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setMinDate(JaretDate minDate) {
         _delegate.setMinDate(minDate);
     }
 
     /**
      * {@inheritDoc}
      */
     public JaretDate getMaxDate() {
         return _delegate.getMaxDate();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setMaxDate(JaretDate maxDate) {
         _delegate.setMaxDate(maxDate);
     }
 
     /**
      * {@inheritDoc}
      */
     public TimeBarSelectionModel getSelectionModel() {
         return _delegate.getSelectionModel();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setSelectionModel(TimeBarSelectionModel selectionModel) {
         _delegate.setSelectionModel(selectionModel);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getFirstRowDisplayed() {
         return _delegate.getFirstRow();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setFirstRowDisplayed(int rowIdx) {
         _delegate.setFirstRow(rowIdx);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setFirstRowDisplayed(TimeBarRow row) {
         _delegate.setFirstRow(row);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setFirstRow(int firstRow, int pixOffset) {
         _delegate.setFirstRow(firstRow, pixOffset);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setLastRow(int index) {
         _delegate.setLastRow(index);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setLastRow(TimeBarRow row) {
         _delegate.setLastRow(row);
     }
 
     /**
      * {@inheritDoc}
      */
     public JaretDate getEndDate() {
         return _delegate.getEndDate();
     }
 
     /**
      * {@inheritDoc}
      */
     public int getFirstRowOffset() {
         return _delegate.getFirstRowOffset();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setFirstRowOffset(int offset) {
         _delegate.setFirstRowOffset(offset);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setTimeScalePosition(int timeScalePosition) {
         if (timeScalePosition == TimeBarViewerInterface.TIMESCALE_POSITION_NONE) {
             if (_gridRenderer != null) {
                 _gridRenderer.setTickProvider(null);
             }
         } else {
             if (_gridRenderer != null && _timeScaleRenderer instanceof ITickProvider) {
                 _gridRenderer.setTickProvider((ITickProvider) _timeScaleRenderer);
             }
         }
         _delegate.setTimeScalePosition(timeScalePosition);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setAdjustMinMaxDatesByModel(boolean adjust) {
         _delegate.setAdjustMinMaxDatesByModel(adjust);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getAdjustMinMaxDatesByModel() {
         return _delegate.getAdjustMinMaxDatesByModel();
     }
 
     /**
      * {@inheritDoc}
      */
     public TimeBarRow rowForY(int y) {
         return _delegate.rowForY(y);
     }
 
     /**
      * {@inheritDoc}
      */
     public JaretDate dateForX(int x) {
         return _delegate.dateForCoord(x);
     }
 
     /**
      * {@inheritDoc}
      */
     public JaretDate dateForXY(int x, int y) {
         return _delegate.dateForCoord(x, y);
     }
 
     /**
      * {@inheritDoc}
      */
     public int xForDate(JaretDate date) {
         return _delegate.xForDate(date);
     }
 
     /**
      * {@inheritDoc}
      */
     public void highlightRow(int y) {
         _delegate.highlightRow(y);
     }
 
     /**
      * {@inheritDoc}
      */
     public void highlightRow(TimeBarRow timeBarRow) {
         _delegate.highlightRow(timeBarRow);
     }
 
     /**
      * {@inheritDoc}
      */
     public void deHighlightRow() {
         _delegate.deHighlightRow();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setDrawRowGrid(boolean drawRowGrid) {
         _delegate.setDrawRowGrid(drawRowGrid);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getDrawRowGrid() {
         return _delegate.getDrawRowGrid();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setYAxisWidth(int width) {
         _delegate.setYAxisWidth(width);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getYAxisWidth() {
         return _delegate.getYAxisWidth();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setHierarchyWidth(int width) {
         _delegate.setHierarchyWidth(width);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getHierarchyWidth() {
         return _delegate.getHierarchyWidth();
     }
 
     /**
      * {@inheritDoc}
      */
     public void addIntervalModificator(IntervalModificator intervalModificator) {
         _delegate.addIntervalModificator(intervalModificator);
     }
 
     /**
      * {@inheritDoc}
      */
     public void remIntervalModificator(IntervalModificator intervalModificator) {
         _delegate.remIntervalModificator(intervalModificator);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setAutoscrollEnabled(boolean enableAutoscroll) {
         _delegate.setAutoscrollEnabled(enableAutoscroll);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isAutoscrollEnabled() {
         return _delegate.isAutoscrollEnabled();
     }
 
     /**
      * {@inheritDoc}
      */
     public String getTimeScaleToolTipText(int x, int y) {
         if (_timeScaleRendererComponent != null) {
             return _timeScaleRendererComponent.getToolTipText(new MouseEvent(this, 0, 0, 0, x
                     - _delegate.getDiagramRect().x, y - _delegate.getXAxisRect().y, 0, false));
         }
         return null;
     }
 
     /**
      * {@inheritDoc}
      */
     public String getHeaderToolTipText(TimeBarRow row, int x, int y) {
         if (_headerRenderer != null && row != null) {
             JComponent component = _headerRenderer.getHeaderRendererComponent(this, row.getRowHeader(), false);
             if (component != null) {
                 component.setBounds(_delegate.getHeaderRect(row));
                 return component.getToolTipText(new MouseEvent(this, 0, 0, 0, x - _delegate.getYAxisRect().x, y
                         - _delegate.getYAxisRect().y, 0, false));
             }
         }
         return null;
     }
 
     /**
      * {@inheritDoc}
      */
     public String getHierarchyToolTipText(TimeBarNode node, int x, int y) {
         if (_hierarchyRenderer != null && node != null) {
             // TODO check additional parameters to be corrrect - maybe these are
             // useful for generating the tooltip
             JComponent component = _hierarchyRenderer.getHierarchyRendererComponent(this, node, false, false, false, 0,
                     1);
             component.setBounds(_delegate.getHierarchyRect(node));
             return component.getToolTipText(new MouseEvent(this, 0, 0, 0, x - _delegate.getHierarchyRect().x, y
                     - _delegate.getHierarchyRect().y, 0, false));
         }
         return null;
     }
 
     /**
      * {@inheritDoc}
      */
     public HierarchicalViewState getHierarchicalViewState() {
         return _delegate.getHierarchicalViewState();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setHierarchicalViewState(HierarchicalViewState hierarchicalViewState) {
         _delegate.setHierarchicalViewState(hierarchicalViewState);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setModel(HierarchicalTimeBarModel hModel) {
         _delegate.setModel(hModel);
     }
 
     /**
      * {@inheritDoc}
      */
     public HierarchicalTimeBarModel getHierarchicalModel() {
         return _delegate.getHierarchicalModel();
     }
 
     /**
      * {@inheritDoc}
      */
     public int getMarkerWidth(TimeBarMarker marker) {
         if (_markerRenderer != null) {
             return _markerRenderer.getMarkerWidth(marker);
         }
         return 0;
     }
 
     /**
      * {@inheritDoc}
      */
     public void setTitle(String title) {
         _delegate.setTitle(title);
     }
 
     /**
      * {@inheritDoc}
      */
     public String getTitle() {
         return _delegate.getTitle();
     }
 
     /**
      * Retrieve the context menu set for the body.
      * 
      * @return the context menu or <code>null</code>
      */
     public JPopupMenu getBodyContextMenu() {
         return _bodyContextMenu;
     }
 
     /**
      * Set the context menu to be used for the body area.
      * 
      * @param bodyContextMenu context menu or <code>null</code> for no context menu
      */
     public void setBodyContextMenu(JPopupMenu bodyContextMenu) {
         _bodyContextMenu = bodyContextMenu;
     }
 
     /**
      * Retrieve the context menu set for the time scale.
      * 
      * @return the context menu or <code>null</code>
      */
     public JPopupMenu getTimeScaleContextMenu() {
         return _timeScaleContextMenu;
     }
 
     /**
      * Set the context menu to be used for the time scale area.
      * 
      * @param timeScaleContextMenu context menu or <code>null</code> for no context menu
      */
     public void setTimeScaleContextMenu(JPopupMenu timeScaleContextMenu) {
         _timeScaleContextMenu = timeScaleContextMenu;
     }
 
     /**
      * Retrieve the context menu set for the header.
      * 
      * @return the context menu or <code>null</code>
      */
 
     public JPopupMenu getHeaderContextMenu() {
         return _headerContextMenu;
     }
 
     /**
      * Set the context menu to be used for the header area.
      * 
      * @param headerContextMenu context menu or <code>null</code> for no context menu
      */
     public void setHeaderContextMenu(JPopupMenu headerContextMenu) {
         _headerContextMenu = headerContextMenu;
     }
 
     /**
      * Retrieve the context menu set for the hierrarchy.
      * 
      * @return the context menu or <code>null</code>
      */
     public JPopupMenu getHierarchyContextMenu() {
         return _hierarchyContextMenu;
     }
 
     /**
      * Set the context menu to be used for the hierarchy area.
      * 
      * @param hierarchyContextMenu context menu or <code>null</code> for no context menu
      */
     public void setHierarchyContextMenu(JPopupMenu hierarchyContextMenu) {
         _hierarchyContextMenu = hierarchyContextMenu;
     }
 
     /**
      * Retrieve the context menu set for the title area.
      * 
      * @return the context menu or <code>null</code>
      */
     public JPopupMenu getTitleContextMenu() {
         return _titleContextMenu;
     }
 
     /**
      * Set the context menu to be used for the titel area.
      * 
      * @param titleContextMenu context menu or <code>null</code> for no context menu
      */
     public void setTitleContextMenu(JPopupMenu titleContextMenu) {
         _titleContextMenu = titleContextMenu;
     }
 
     /**
      * {@inheritDoc}
      */
     public void displayBodyContextMenu(int x, int y) {
         if (_bodyContextMenu != null) {
             _bodyContextMenu.show(_diagram, x, y);
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void displayTimeScaleContextMenu(int x, int y) {
         if (_timeScaleContextMenu != null) {
             _timeScaleContextMenu.show(_diagram, x, y);
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void displayIntervalContextMenu(Interval interval, int x, int y) {
         JPopupMenu menu = getPopupMenu(interval.getClass());
         if (menu != null) {
             menu.show(_diagram, x, y);
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void displayHeaderContextMenu(TimeBarRow row, int x, int y) {
         if (_headerContextMenu != null) {
             _headerContextMenu.show(_diagram, x, y);
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void displayHierarchyContextMenu(TimeBarRow row, int x, int y) {
         if (_hierarchyContextMenu != null) {
             _hierarchyContextMenu.show(_diagram, x, y);
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void displayTitleContextMenu(int x, int y) {
         if (_titleContextMenu != null) {
             _titleContextMenu.show(_diagram, x, y);
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isInToggleArea(TimeBarNode node, int x, int y) {
         return true;
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isInHierarchySelectionArea(TimeBarNode node, int x, int y) {
         return false;
     }
 
     /**
      * Set the drawing mode.
      * 
      * @param drawOverlapping if set to true intervals will be painted on another. If set to false, every interval will
      * only get a fraction of the space corresponding to the count of overlapping intervals.
      */
     public void setDrawOverlapping(boolean drawOverlapping) {
         _delegate.setDrawOverlapping(drawOverlapping);
     }
 
     /**
      * Retrieve the drawing mode.
      * 
      * @return the drawing mode
      */
     public boolean getDrawOverlapping() {
         return _delegate.isDrawOverlapping();
     }
 
     /**
      * {@inheritDoc}
      */
     public void addMarker(TimeBarMarker marker) {
         _delegate.addMarker(marker);
     }
 
     /**
      * {@inheritDoc}
      */
     public void remMarker(TimeBarMarker marker) {
         _delegate.remMarker(marker);
     }
 
     /**
      * {@inheritDoc}
      */
     public List<TimeBarMarker> getMarkers() {
         return _delegate.getMarkers();
     }
 
     /**
      * {@inheritDoc}
      */
     public void addMarkers(List<TimeBarMarker> markers) {
         _delegate.addMarkers(markers);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getSelectionDelta() {
         return _delegate.getSelectionDelta();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setSelectionDelta(int selectionDelta) {
         _delegate.setSelectionDelta(selectionDelta);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isLineDraggingAllowed() {
         return _delegate.isLineDraggingAllowed();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setLineDraggingAllowed(boolean lineDraggingAllowed) {
         _delegate.setLineDraggingAllowed(lineDraggingAllowed);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getYForRow(TimeBarRow row) {
         return _delegate.yForRow(row);
     }
 
     /**
      * {@inheritDoc}. This is the same as rowForY.
      */
     public TimeBarRow getRowForY(int y) {
         return _delegate.rowForY(y);
     }
 
     /**
      * {@inheritDoc}
      */
     public TimeBarRow getRowForXY(int x, int y) {
         return _delegate.rowForXY(x, y);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isMilliAccuracy() {
         return _delegate.isMilliAccuracy();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setMilliAccuracy(boolean milliAccuracy) {
         _delegate.setMilliAccuracy(milliAccuracy);
     }
 
     /**
      * {@inheritDoc}
      */
     public TimeBarNode getPpsRow() {
         return _delegate.getPpsRow();
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean hasVariableXScale() {
         return _delegate.hasVariableXScale();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setVariableXScale(boolean state) {
         _delegate.setVariableXScale(state);
     }
 
     /**
      * {@inheritDoc} Includes the timescale if present.
      */
     public void doScrollHorizontal(int diff) {
         Graphics g = _diagram.getGraphics();
         if (g == null) {
             return;
         }
         if (_delegate.getDiagramRect() == null) {
             return;
         }
 
         Rectangle d = new Rectangle(_delegate.getDiagramRect());
         if (_delegate.getOrientation().equals(Orientation.HORIZONTAL)) {
             if (_delegate.getTimeScalePosition() != TIMESCALE_POSITION_NONE) {
                 if (_delegate.getTimeScalePosition() == TIMESCALE_POSITION_TOP) {
                     d.y = _delegate.getXAxisRect().y;
                 }
                 d.height += _delegate.getXAxisRect().height;
             }
         } else {
             d.y = 0;
             d.height = d.height + _delegate.getHierarchyWidth() + _delegate.getYAxisWidth();
         }
 
         if (diff > 0) {
             // to the right
             g.copyArea(d.x + diff, d.y, d.width - diff, d.height, -diff, 0);
             _diagram.repaint(d.x + d.width - diff, d.y, diff, d.height);
         } else {
             diff = -diff;
             g.copyArea(d.x, d.y, d.width - diff, d.height, diff, 0);
             _diagram.repaint(d.x, d.y, diff, d.height);
         }
         g.dispose();
     }
 
     /**
      * {@inheritDoc} Includes header and/or hierarchy if present.
      */
     public void doScrollVertical(int diff) {
         Graphics g = _diagram.getGraphics();
         if (g == null) {
             return;
         }
 
         if (_delegate.getDiagramRect() == null) {
             return;
         }
 
         Rectangle d = new Rectangle(_delegate.getDiagramRect());
         if (_delegate.getOrientation().equals(Orientation.HORIZONTAL)) {
             d.x = d.x - _delegate.getHierarchyWidth() - _delegate.getYAxisWidth();
             d.width = d.width + _delegate.getHierarchyWidth() + _delegate.getYAxisWidth();
         } else {
             if (_delegate.getTimeScalePosition() == TIMESCALE_POSITION_TOP) {
                 d.x = d.x - _delegate.getXAxisHeight();
             }
             d.width = d.width + _delegate.getXAxisHeight();
         }
         if (diff > 0) {
             // downwards
             g.copyArea(d.x, d.y + diff, d.width, d.height - diff, 0, -diff);
             _diagram.repaint(d.x, d.y + d.height - diff, d.width, diff);
         } else {
             diff = -diff;
             g.copyArea(d.x, d.y, d.width, d.height - diff, 0, diff);
             _diagram.repaint(d.x, d.y, d.width, diff);
         }
         g.dispose();
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getOptimizeScrolling() {
         return _delegate.getOptimizeScrolling();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setOptimizeScrolling(boolean optimizeScrolling) {
         _delegate.setOptimizeScrolling(optimizeScrolling);
     }
 
     /**
      * {@inheritDoc}
      */
     public Orientation getTBOrientation() {
         return _delegate.getOrientation();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setTBOrientation(Orientation orientation) {
         _delegate.setOrientation(orientation);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getAutoScaleRows() {
         return _delegate.getAutoScaleRows();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setAutoScaleRows(int rows) {
         _delegate.setAutoScaleRows(rows);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getXAxisHeight() {
         return _delegate.getXAxisHeight();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setXAxisHeight(int height) {
         _delegate.setXAxisHeight(height);
     }
 
     /**
      * {@inheritDoc}
      */
     public void fireSelectionChanged() {
         // nothing to do in the swing version
     }
 
     /**
      * {@inheritDoc}
      */
     public void addTimeBarChangeListener(ITimeBarChangeListener listener) {
         _delegate.addTimeBarChangeListener(listener);
     }
 
     /**
      * {@inheritDoc}
      */
     public void removeTimeBarChangeListener(ITimeBarChangeListener listener) {
         _delegate.removeTimeBarChangeListener(listener);
     }
 
     /**
      * {@inheritDoc}
      */
     public void addFocussedIntervalListener(FocussedIntervalListener listener) {
         _delegate.addFocussedIntervalListener(listener);
     }
 
     /**
      * {@inheritDoc}
      */
     public void remFocussedIntervalListener(FocussedIntervalListener listener) {
         _delegate.remFocussedIntervalListener(listener);
     }
 
     /**
      * {@inheritDoc}
      */
     public ITimeBarViewState getTimeBarViewState() {
         return _delegate.getTimeBarViewState();
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isRowHeightDragginAllowed() {
         return _delegate.isRowHeightDraggingAllowed();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setRowHeightDraggingAllowed(boolean rowHeightDraggingAllowed) {
         _delegate.setRowHeightDraggingAllowed(rowHeightDraggingAllowed);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean rowLineHit(int x, int y) {
         return _delegate.rowLineHit(x, y);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isInRowAxis(int x, int y) {
         return _delegate.isInRowAxis(x, y);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isInDiagram(int x, int y) {
         return _delegate.isInDiagram(x, y);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getStrictClipTimeCheck() {
         return _delegate.getStrictClipTimeCheck();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setStrictClipTimeCheck(boolean strictClipTimeCheck) {
         _delegate.setStrictClipTimeCheck(strictClipTimeCheck);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getSecondsDisplayed() {
         return _delegate.getSecondsDisplayed();
     }
 
     /**
      * {@inheritDoc}
      */
     public IOverlapStrategy getOverlapStrategy() {
         return _delegate.getOverlapStrategy();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setOverlapStrategy(IOverlapStrategy overlapStrategy) {
         _delegate.setOverlapStrategy(overlapStrategy);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getScrollLookBackMinutes() {
         return _delegate.getScrollLookBackMinutes();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setScrollLookBackMinutes(int scrollLookBackMinutes) {
         _delegate.setScrollLookBackMinutes(scrollLookBackMinutes);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setScrollLookForwardMinutes(int scrollLookForwardMinutes) {
         _delegate.setScrollLookForwardMinutes(scrollLookForwardMinutes);
     }
 
     /**
      * {@inheritDoc}
      */
     public int getScrollLookForwardMinutes() {
         return _delegate.getScrollLookForwardMinutes();
     }
 
     /**
      * {@inheritDoc}
      */
     public String getName() {
         // null check becuase of the gtk plaf that calls getName before the component is fully initialized
         if (_delegate != null) {
             return _delegate.getName();
         } else {
             return null;
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void setName(String name) {
         _delegate.setName(name);
     }
 
     /**
      * {@inheritDoc}
      */
     public TimeBarViewerDelegate getDelegate() {
         return _delegate;
     }
 
     /**
      * {@inheritDoc}
      */
     public int getAutoscrollDelta() {
         return _delegate.getAutoscrollDelta();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setAutoscrollDelta(int autoscrollDelta) {
         _delegate.setAutoscrollDelta(autoscrollDelta);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getDragAllSelectedIntervals() {
         return _delegate.getDragAllSelectedIntervals();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setDragAllSelectedIntervals(boolean dragAllSelectedIntervals) {
         _delegate.setDragAllSelectedIntervals(dragAllSelectedIntervals);
     }
 
     /**
      * {@inheritDoc}
      */
     public List<IIntervalRelation> getRelationsForCoord(int x, int y) {
         if (_relationRenderer != null) {
             return _relationRenderer.getRelationsForCoord(x, y);
         } else {
             return null;
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public String getRelationTooltip(int x, int y) {
         if (_relationRenderer != null) {
             return _relationRenderer.getTooltip(x, y);
         }
         return null;
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getScrollOnFocus() {
         return _delegate.getScrollOnFocus();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setScrollOnFocus(boolean scrollOnFocus) {
         _delegate.setScrollOnFocus(scrollOnFocus);
     }
 
     /**
      * {@inheritDoc}
      */
     public void addSelectionRectListener(ISelectionRectListener listener) {
         _delegate.addSelectionRectListener(listener);
     }
 
     /**
      * {@inheritDoc}
      */
     public void remSelectionRectListener(ISelectionRectListener listener) {
         _delegate.remSelectionRectListener(listener);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getHideRoot() {
         return _delegate.getHideRoot();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setHideRoot(boolean hideRoot) {
         _delegate.setHideRoot(hideRoot);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getMarkerDraggingInDiagramArea() {
         return _delegate.getMarkerDraggingInDiagramArea();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setMarkerDraggingInDiagramArea(boolean allowed) {
         _delegate.setMarkerDraggingInDiagramArea(allowed);
     }
 
     /**
      * {@inheritDoc}
      */
     public void clearRegionRect() {
         _delegate.clearRegionRect();
     }
 
     /**
      * {@inheritDoc}
      */
     public TBRect getRegionRect() {
         return _delegate.getRegionRect();
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getRegionRectEnable() {
         return _delegate.getRegionRectEnable();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setRegionRectEnable(boolean enabled) {
         _delegate.setRegionRectEnable(enabled);
     }
 
     /**
      * {@inheritDoc} Repaint a rectangle. Overridden and extended widht and height by 1.
      */
     public void repaint(Rectangle r) {
         super.repaint(r.x, r.y, r.width + 1, r.height + 1);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean getUseUniformHeight() {
         return _delegate.getUseUniformHeight();
     }
 
     /**
      * {@inheritDoc}
      */
     public void setUseUniformHeight(boolean useUniformHeight) {
         _delegate.setUseUniformHeight(useUniformHeight);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setSecondsDisplayed(int seconds, boolean center) {
         _delegate.setSecondsDisplayed(seconds, center);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setSecondsDisplayed(int seconds, JaretDate centerDate) {
         _delegate.setSecondsDisplayed(seconds, centerDate);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isDisplayed(JaretDate date) {
         return _delegate.isDisplayed(date);
     }
 
     /**
      * {@inheritDoc}
      */
     public void setInitialDisplayRange(JaretDate startDate, int secondsDisplayed) {
         _delegate.setInitialDisplayRange(startDate, secondsDisplayed);
     }
 
     /**
      * Retrieve the panel that the horizontal scroll bar is plcaed on (BorderLayout, CENETER). This can be used to add
      * special extensions in the scroll bar area.
      * 
      * @return th panel or <code>null</code> if the scroll bar has been suppressed
      */
     public JPanel getHorizontalScrollPanel() {
         return _horizontalScrollPanel;
     }
 
     /**
      * Retrieve the panel that the vertical scroll bar is plcaed on (BorderLayout, CENETER). This can be used to add
      * special extensions in the scroll bar area.
      * 
      * @return th panel or <code>null</code> if the scroll bar has been suppressed
      */
     public JPanel getVerticalScrollPanel() {
         return _verticalScrollPanel;
     }
 
     /**
      * {@inheritDoc}
      */
     public Pair<TimeBarRow, JaretDate> getPopUpInformation() {
         return _delegate.getPopUpInformation();
     }
 
     /** list of ghost intervals to be painted. */
     protected List<? extends Interval> _ghostIntervals;
     /** y offsets for the ghost intervals. */
     protected List<Integer> _ghostIntervalYCoordinates;
     /**
      * the origin for painting the ghost intervals/rows. The ghosted elements will paintetd relative to the y
      * coordinate.
      */
     protected Point _ghostOrigin;
     /** list of ghost rows to paint. */
     protected List<TimeBarRow> _ghostRows;
     /** y offsets for the ghost rows. */
     protected List<Integer> _ghostRowYCoordinates;
 
     /**
      * Set the list of ghost intervals to be drawn.
      * 
      * @param intervals list of intervals or <code>null</code> to delete ghosted intervals.
      * @param yCoordinates list of y offsets for the ghost intervals (maybe <code>null</code> when deleting ghost
      * intervals
      */
     public void setGhostIntervals(List<? extends Interval> intervals, List<Integer> yCoordinates) {
         _ghostIntervals = intervals;
         _ghostIntervalYCoordinates = yCoordinates;
         repaint();
     }
 
     /**
      * Draw ghost intervals and rows.
      * 
      * @param gc GC
      */
     private void drawGhosts(Graphics gc) {
         drawGhostIntervals(gc);
         drawGhostRows(gc);
     }
 
     /**
      * Draw ghost intervals. Y positions are dependant from the ghost y offsets and the ghost origin. (Always uses the
      * defaultRowHeight.)
      * 
      * @param gc GC
      */
     private void drawGhostIntervals(Graphics gc) {
         if (_ghostOrigin != null && _ghostIntervals != null) {
             for (int i = 0; i < _ghostIntervals.size(); i++) {
                 Interval interval = _ghostIntervals.get(i);
                 int yoff = _ghostIntervalYCoordinates.get(i);
 
                 Rectangle drawingArea = _delegate.getIntervalBounds(-1, interval);
                 if (_delegate.getOrientation().equals(Orientation.HORIZONTAL)) {
                     drawingArea.y = _ghostOrigin.y + yoff;
                     drawingArea.height = _delegate.getTimeBarViewState().getDefaultRowHeight();
                 } else {
                     drawingArea.x = _ghostOrigin.x + yoff;
                     drawingArea.width = _delegate.getTimeBarViewState().getDefaultRowHeight();
                 }
                 Graphics2D g2 = (Graphics2D) gc;
                 Color color = g2.getColor();
                 g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f));
 
                 TimeBarRenderer renderer = getRenderer(interval.getClass());
                 if (renderer == null) {
                     throw new RuntimeException("no suitable renderer");
                 }
 
                 Component component = renderer.getTimeBarRendererComponent(this, interval, false, false);
 
                 component.setBounds(drawingArea);//
 
                 Graphics2D g22 = (Graphics2D) g2.create(drawingArea.x, drawingArea.y - _delegate.getRowHeight() / 2,
                         drawingArea.width, drawingArea.height);
                 component.paint(g22);
 
                 g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
                 g2.setColor(color);
 
             }
         }
     }
 
     /**
      * Draw ghost rows. Y positions are dependent from the ghost y offsets and the ghost origin.
      * 
      * @param gc GC
      */
     private void drawGhostRows(Graphics gc) {
         if (_ghostOrigin != null && _ghostRows != null) {
 
             Graphics2D g2 = (Graphics2D) gc;
             Color color = g2.getColor();
             g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f));
 
             for (int i = 0; i < _ghostRows.size(); i++) {
                 TimeBarRow row = _ghostRows.get(i);
                 int yoff = _ghostRowYCoordinates.get(i);
 
                 if (_delegate.getOrientation().equals(Orientation.HORIZONTAL)) {
                     int y = _ghostOrigin.y + yoff;
                     int height = _delegate.getRowHeight(); // default height
                     _diagram.drawRow(g2, y, height, row, false);
                 } else {
                     int x = _ghostOrigin.x + yoff;
                     int width = _delegate.getRowHeight(); // default height
                     _diagram.drawRowVertical(g2, x, width, row, false);
                 }
             }
             g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
             g2.setColor(color);
         }
     }
 
     /**
      * Set the origin (current drag position) to shift the ghost elements.
      * 
      * @param x x coordinate
      * @param y y coordniate
      */
     public void setGhostOrigin(int x, int y) {
         _ghostOrigin = new Point(x, y);
         if (_ghostIntervals != null || _ghostRows != null) {
             repaint();
         }
     }
 
     /**
      * If set to true this will cause the title renderer component to be used directly instead of beeing just used to
      * paint.
      * 
      * @param useTitleRendererComponentInPlace true for direct use of the component
      */
     public void setUseTitleRendererComponentInPlace(boolean useTitleRendererComponentInPlace) {
         _useTitleRendererComponentInPlace = useTitleRendererComponentInPlace;
     }
 
     /**
      * {@inheritDoc}
      */
     public int scrollDateToVisible(JaretDate date) {
         return _delegate.scrollDateToVisible(date);
     }
 
     /**
      * {@inheritDoc}
      */
     public void scrollRowToVisible(TimeBarRow row) {
         _delegate.scrollRowToVisible(row);
     }
 
     /**
      * {@inheritDoc}
      */
     public void scrollIntervalToVisible(TimeBarRow row, Interval interval) {
         _delegate.scrollIntervalToVisible(row, interval);
     }
 
 }