package com.zhlwish.learngef.part;
 
import org.eclipse.draw2d.IFigure;
import org.eclipse.gef.editparts.AbstractGraphicalEditPart;
 
import com.zhlwish.learngef.figure.NodeFigure;
import com.zhlwish.learngef.model.Node;
 
public class NodePart extends AbstractGraphicalEditPart{
 
	@Override
	protected IFigure createFigure() {
		return new NodeFigure((Node) getModel());
	}
 
	@Override
	protected void createEditPolicies() {
	}
 
}

package com.zhlwish.learngef;
 
import org.eclipse.jface.resource.ColorRegistry;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;
 
/**
 * The activator class controls the plug-in life cycle
 */
public class Activator extends AbstractUIPlugin {
 
	// The plug-in ID
	public static final String PLUGIN_ID = "com.zhlwish.learngef"; //$NON-NLS-1$
 
	// The shared instance
	private static Activator plugin;
 
	private ColorRegistry colorRegistry = new ColorRegistry();
 
	/**
	 * The constructor
	 */
	public Activator() {
	}
 
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
	 */
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
	}
 
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
	 */
	public void stop(BundleContext context) throws Exception {
		plugin = null;
		super.stop(context);
	}
 
	/**
	 * Returns the shared instance
	 *
	 * @return the shared instance
	 */
	public static Activator getDefault() {
		return plugin;
	}
 
	public Color getColor(RGB rgb){
		Color color = colorRegistry.get(rgb.toString());
		if(color == null){
			colorRegistry.put(rgb.toString(), rgb);
		}
		color = colorRegistry.get(rgb.toString());
		return color;
	}
 
}