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

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package m2m.frontend.dynamicview.commands;

import m2m.frontend.dynamicview.ThreadRouteConnections;
import m2m.frontend.dynamicview.model.GraphicFunction;
import m2m.frontend.dynamicview.model.Node;
import m2m.frontend.dynamicview.model.PointConnection;

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


public class FunctionChangeLayoutCommand extends AbstractLayoutCommand 
{
    private GraphicFunction model;
    private Rectangle layoutOutPut = new Rectangle();
    
    
    public void execute() 
    {   
        /* Set the layout of output connection points */
                for(PointConnection pc :  model.getOutputPointsConnection())
                {
                layoutOutPut.x = getLayout().x -  model.getLayout().x +  pc.getLayout().x;
                layoutOutPut.y = getLayout().y -  model.getLayout().y +  pc.getLayout().y;
                layoutOutPut.height = pc.getLayout().height;
                layoutOutPut.width = pc.getLayout().width;
                pc.setLayout(new Rectangle(layoutOutPut));   
                }
                
                // Set the layout of the model
                model.setLayout(getLayout());
                
                // 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 if we can set the layout of output connection points */
                for(PointConnection pc : model.getOutputPointsConnection())
                {
                        layoutOutPut.x = getLayout().x -  model.getLayout().x +  pc.getLayout().x;
                        layoutOutPut.y = getLayout().y -  model.getLayout().y +  pc.getLayout().y;
                        layoutOutPut.height = pc.getLayout().height;
                        layoutOutPut.width = pc.getLayout().width;
                        if(!pc.CanSetLayout(layoutOutPut))
                                return false;
                }
                return true;
        }
        return false;
    }
   
    
    public void setModel(Node model) 
    {
        this.model = (GraphicFunction)model;
    }
}