org.friendularity.jvision.engine.CVChainManager Maven / Gradle / Ivy

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 /*
 *  Copyright 2013 by The Friendularity Project (www.friendularity.org).
 * 
 *  Licensed 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.friendularity.jvision.engine;

import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.Resource;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ButtonGroup;
import org.friendularity.jvision.gui.CVChainControl;
import org.friendularity.jvision.gui.FilterBox;

/**
 * Singleton that acts as a builder for new CVChains and their controls
 * 
 * @see CVChain 
 * for a discussion of CVChains
 * 
 * This is the coordinator for CVChains - it makes sure they have system wide unique names, and 
 * handles wiring up CVChainControl, the FilterBox, and the CVChain model 
 * 
 * @author Annie
 */
public class CVChainManager {
	private static CVChainManager defaultCVManager = null;
	
	private HashMapcvChains = new HashMap();
	
	public static CVChainManager getDefaultManager() {
		if(defaultCVManager == null)
			defaultCVManager = new CVChainManager();
		
		return defaultCVManager;
	}
	
	private CVChainManager() {
		
	}

	/**
	 * Is it OK to make a chain with this name?
	 * 
	 * @param name
	 * @return 
	 */
	public boolean chainExists(String name) {
		return cvChains.containsKey(name);
	}

	/**
	 * try to create a new CVChain with no filters in it, and add a CVChainControl to 
	 * the FilterBox
	 */
	public void buildChain(FilterBox fb, String name, boolean intermediatesVisible, String source) {
		if(chainExists(name)) 
			throw new IllegalArgumentException("Chain " + name + " already exists");
		
		CVChain cvchain = new CVChain(name, intermediatesVisible, source);
		cvChains.put(name, cvchain);
		CVChainControl cvc = new CVChainControl(cvchain, fb);
		
		fb.addCVChainControl(cvc);
	}
	
	public void buildChain(FilterBox fb, Resource cvchainRDF, Model M) {
		CVChain cvchain = new CVChain(M, cvchainRDF);
		cvChains.put(cvchain.getName(), cvchain);
		CVChainControl cvc = new CVChainControl(cvchain, fb);
		fb.addCVChainControl(cvc);
	}
	
	/**
	 *  famulus to FilterBox, the manager takes care of coordinating the pieces
	 *  when user removes a CVChain
	 * 
	 * @param fb the FilterBox we're in
	 * @param cvcc the control to remove
	 */
	public void remove(FilterBox fb, CVChainControl cvcc) {
		if(fb == null || cvcc == null) {
			Logger.getLogger(CVChainManager.class.getName()).log(Level.SEVERE, 
								"evil thing in remove in CVChainManager");
		}
		fb.removeChainControl(cvcc);
		CVChain cvc = cvChains.get(cvcc.getName());
		cvc.unwire();
		cvChains.remove(cvcc.getName());
	}

	
			
}