GroupClassPathImplementation.java

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package org.netbeans.modules.ruby.railsprojects.classpath;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import java.util.List;
import org.netbeans.spi.java.classpath.ClassPathImplementation;
import org.netbeans.spi.java.classpath.PathResourceImplementation;

/**
 * Implementation which lets you merge a set of ClassPathImplementations
 *
 * @author Tor Norbye
 */
public class GroupClassPathImplementation implements ClassPathImplementation, PropertyChangeListener {
    private SourcePathImplementation[] implementations;

    GroupClassPathImplementation(SourcePathImplementation[] implementations) {
        this.implementations = implementations;
    }

    public List<? extends PathResourceImplementation> getResources() {
        List<PathResourceImplementation> combined = new ArrayList<PathResourceImplementation>(20);
        for (SourcePathImplementation implementation : implementations) {
            List<? extends PathResourceImplementation> l = implementation.getResources();
            combined.addAll(l);
        }

        return combined;
    }

    public void addPropertyChangeListener(PropertyChangeListener listener) {
        for (SourcePathImplementation implementation : implementations) {
            implementation.addPropertyChangeListener(listener);
        }
    }

    public void removePropertyChangeListener(PropertyChangeListener listener) {
        for (SourcePathImplementation implementation : implementations) {
            implementation.removePropertyChangeListener(listener);
        }
    }

    public void propertyChange(PropertyChangeEvent evt) {
        for (SourcePathImplementation implementation : implementations) {
            propertyChange(evt);
        }
    }
}