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package org.eclipse.papyrus.infra.gmfdiag.common.linklf;
import org.eclipse.draw2d.AbstractPointListShape;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.PositionConstants;
import org.eclipse.draw2d.ScalablePolygonShape;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.draw2d.geometry.PrecisionPoint;
import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IBorderItemEditPart;
import org.eclipse.gmf.runtime.draw2d.ui.figures.BaseSlidableAnchor;
import org.eclipse.gmf.runtime.draw2d.ui.figures.IBorderItemLocator;
import org.eclipse.gmf.runtime.gef.ui.figures.DefaultSizeNodeFigure;
public class LinksLFNodeFigure extends DefaultSizeNodeFigure {
private final GraphicalEditPart myHost;
public LinksLFNodeFigure(GraphicalEditPart hostEP, int width, int height) {
super(width, height);
myHost = hostEP;
}
@Override
protected ConnectionAnchor createAnchor(PrecisionPoint p) {
if(p == null) {
// If the old terminal for the connection anchor cannot be resolved (by SlidableAnchor) a null
// PrecisionPoint will passed in - this is handled here
return createDefaultAnchor();
}
SlidableSnapToGridAnchor result = new SlidableSnapToGridAnchor(this, p);
result.setEditPartViewer(myHost.getViewer());
return result;
}
@Override
protected double getSlidableAnchorArea() {
return 0.9;
}
protected ConnectionAnchor createConnectionAnchor(Point p) {
if(p == null) {
return getConnectionAnchor(szAnchor);
} else {
Point temp = p.getCopy();
translateToRelative(temp);
PrecisionPoint pt = BaseSlidableAnchor.getAnchorRelativeLocation(temp, getBounds());
if(isDefaultAnchorArea(pt)) {
return getConnectionAnchor(szAnchor);
}
if (myHost instanceof IBorderItemEditPart) {
IBorderItemLocator locator = ((IBorderItemEditPart) myHost).getBorderItemLocator();
switch (locator.getCurrentSideOfParent()) {
case PositionConstants.WEST:
case PositionConstants.EAST:
pt.setPreciseX(pt.preciseX() > 0.5 ? 1.0 : 0.0);
break;
case PositionConstants.SOUTH:
case PositionConstants.NORTH:
pt.setPreciseY(pt.preciseY() > 0.5 ? 1.0 : 0.0);
break;
}
}
return createAnchor(pt);
}
}
@Override
public PointList getPolygonPoints() {
if(getChildren().size() == 1) {
IFigure primaryShape = (IFigure)getChildren().get(0);
if(primaryShape instanceof ScalablePolygonShape) {
ScalablePolygonShape scalable = (ScalablePolygonShape)primaryShape;
PointList result = scalable.getScaledPoints().getCopy();
result.translate(scalable.getLocation());
return result;
}
if(primaryShape instanceof AbstractPointListShape) {
return ((AbstractPointListShape)primaryShape).getPoints().getCopy();
}
}
return super.getPolygonPoints();
}
}
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