/*
 * citygml4j - The Open Source Java API for CityGML
 * https://github.com/citygml4j
 * 
 * Copyright 2013-2017 Claus Nagel <claus.nagel@gmail.com>
 *
 * 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.citygml4j.model.gml.coverage;

import org.citygml4j.builder.copy.CopyBuilder;

public abstract class AbstractDiscreteCoverage extends AbstractCoverage {
	private CoverageFunction coverageFunction;	

	public CoverageFunction getCoverageFunction() {
		return coverageFunction;
	}

	public boolean isSetCoverageFunction() {
		return coverageFunction != null;
	}

	public void setCoverageFunction(CoverageFunction coverageFunction) {
		if (coverageFunction != null)
			coverageFunction.setParent(this);
		
		this.coverageFunction = coverageFunction;
	}

	public void unsetCoverageFunction() {
		if (isSetCoverageFunction())
			coverageFunction.unsetParent();
		
		coverageFunction = null;
	}

	@Override
	public Object copyTo(Object target, CopyBuilder copyBuilder) {
		if (target == null)
			throw new IllegalArgumentException("Target argument must not be null for abstract copyable classes.");

		AbstractDiscreteCoverage copy = (AbstractDiscreteCoverage)target;
		super.copyTo(copy, copyBuilder);
		
		if (isSetCoverageFunction()) {
			copy.setCoverageFunction((CoverageFunction)copyBuilder.copy(coverageFunction));
			if (copy.getCoverageFunction() == coverageFunction)
				coverageFunction.setParent(this);
		}
		
		return copy;
	}

}