/home/ythoma/docs/math2mat/svn/wp1/framework/m2mGUI/src/m2m/frontend/dynamicview/commands/OperationChangeLayoutCommand.java

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package m2m.frontend.dynamicview.commands;

import m2m.frontend.dynamicview.ThreadRouteConnections;
import m2m.frontend.dynamicview.model.GraphicOperation;
import m2m.frontend.dynamicview.model.Node;

import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.swt.widgets.Display;


public class OperationChangeLayoutCommand extends AbstractLayoutCommand 
{
        private GraphicOperation model;
        private Rectangle layoutOutPut = new Rectangle();

  
        
        public void execute() 
        {
                // Set the layout of the model
            model.setLayout(getLayout());
            
            /* Set the layout of the output connection point */
                if(model.getOutputPointConnection() != null)
                        model.getOutputPointConnection().setLayout(layoutOutPut);       
                
                // Route connections
                Display.getCurrent().asyncExec(new ThreadRouteConnections());
        }
        
        
        public boolean canExecute() 
        {
                /* Check if we can set the layout of the model */
        if(model.CanSetLayout(getLayout()))
        {                       
                /* Check i we can set the layout of the output connection point */
                if(model.getOutputPointConnection() == null)
                        return true;
                layoutOutPut.x = getLayout().x -  model.getLayout().x +  model.getOutputPointConnection().getLayout().x;
                layoutOutPut.y = getLayout().y -  model.getLayout().y +  model.getOutputPointConnection().getLayout().y;
                layoutOutPut.height = 10;
                layoutOutPut.width = 10;
            return model.getOutputPointConnection().CanSetLayout(layoutOutPut);
        }
        
        return false;
        }  
                  
          
        public void setModel(Node model) 
        {
                this.model = (GraphicOperation)model;
        }
}