sigil/org.cauldron.sigil.ui/src/org/cauldron/sigil/ui/views/resolution/BundleGraphViewFilter.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.cauldron.sigil.ui.views.resolution;

import org.cauldron.sigil.model.eclipse.ISigilBundle;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;

public class BundleGraphViewFilter extends ViewerFilter {

	private BundleResolverView view;
	
	public BundleGraphViewFilter(BundleResolverView view) {
		this.view = view;
	}

	@Override
	public boolean select(Viewer viewer, Object parentElement, Object element) {
		if ( !view.isDisplayed(BundleResolverView.LOCAL_LINKS) ) {
			if ( element instanceof Link ) {
				Link l = (Link) element;
				return l.getSource() != l.getTarget();
			}
		}
		if ( !view.isDisplayed(BundleResolverView.SATISFIED) ) {
			if ( element instanceof Link ) {
				Link l = (Link) element;
				return !l.isSatisfied();
			}
			else if ( element instanceof ISigilBundle ) {
				ISigilBundle bundle = (ISigilBundle) element;
				for ( Link l : view.getBundlegraph().getLinks(bundle)) {
					if ( !l.isSatisfied() ) {
						return true;
					}
				}
				return false;
			}
		}
		
		if ( !view.isDisplayed(BundleResolverView.UNSATISFIED) ) {
			if ( element instanceof Link ) {
				Link l = (Link) element;
				return l.isSatisfied();
			}
			else if ( element instanceof Link.Unsatisfied ) {
				return false;
			}
		}
		return true;
	}

}