PropertyFilter.java

package org.csstudio.sds.ui.internal.editor.newproperties;

import org.csstudio.sds.model.AbstractWidgetModel;
import org.csstudio.sds.model.WidgetProperty;
import org.eclipse.gef.EditPart;
import org.eclipse.jface.viewers.IFilter;

/**
 * Filter implementation that selects {@link EditPart} instances which control
 * an {@link AbstractWidgetModel} that has a certain {@link WidgetProperty}
 * which is identified by its id.
 * 
 * Can be
 * 
 * @author Sven Wende
 * 
 */
public class PropertyFilter implements IFilter {

	private String propertyId;

	public PropertyFilter() {
	}

	public PropertyFilter(String propertyId) {
		this.propertyId = propertyId;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public final boolean select(Object o) {
		boolean result = false;

		if (o instanceof EditPart) {
			EditPart ep = (EditPart) o;

			if (ep.getModel() instanceof AbstractWidgetModel) {
				AbstractWidgetModel widget = (AbstractWidgetModel) ep.getModel();

				result = widget.hasProperty(propertyId);
			}
		}

		return result;
	}

}