ConditionsConverter.java

/**
 * eAdventure (formerly <e-Adventure> and <e-Game>) is a research project of the
 *    <e-UCM> research group.
 *
 *    Copyright 2005-2010 <e-UCM> research group.
 *
 *    You can access a list of all the contributors to eAdventure at:
 *          http://e-adventure.e-ucm.es/contributors
 *
 *    <e-UCM> is a research group of the Department of Software Engineering
 *          and Artificial Intelligence at the Complutense University of Madrid
 *          (School of Computer Science).
 *
 *          C Profesor Jose Garcia Santesmases sn,
 *          28040 Madrid (Madrid), Spain.
 *
 *          For more info please visit:  <http://e-adventure.e-ucm.es> or
 *          <http://www.e-ucm.es>
 *
 * ****************************************************************************
 *
 *  This file is part of eAdventure, version 2.0
 *
 *      eAdventure is free software: you can redistribute it and/or modify
 *      it under the terms of the GNU Lesser General Public License as published by
 *      the Free Software Foundation, either version 3 of the License, or
 *      (at your option) any later version.
 *
 *      eAdventure is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU Lesser General Public License for more details.
 *
 *      You should have received a copy of the GNU Lesser General Public License
 *      along with eAdventure.  If not, see <http://www.gnu.org/licenses/>.
 */

package es.eucm.ead.importer.subconverters.conditions;

import com.google.inject.Inject;
import com.google.inject.Singleton;
import es.eucm.ead.importer.ModelQuerier;
import es.eucm.ead.model.elements.conditions.*;
import es.eucm.ead.model.elements.operations.ElementField;
import es.eucm.eadventure.common.data.chapter.conditions.Conditions;
import es.eucm.eadventure.common.data.chapter.conditions.FlagCondition;
import es.eucm.eadventure.common.data.chapter.conditions.VarCondition;

import java.util.ArrayList;
import java.util.List;

@Singleton
public class ConditionsConverter {

	private FlagConditionConverter flagConditionConverter;
	private VarConditionConverter varConditionConverter;
	private ModelQuerier modelQuerier;

	/**
	 * A list with the fields contained by the last condition converted
	 */
	private List<ElementField> fieldsInLastCond;

	@Inject
	public ConditionsConverter(FlagConditionConverter flagConditionConverter,
			VarConditionConverter varConditionConverter,
			ModelQuerier modelQuerier) {
		this.flagConditionConverter = flagConditionConverter;
		this.varConditionConverter = varConditionConverter;
		this.modelQuerier = modelQuerier;
		this.fieldsInLastCond = new ArrayList<ElementField>();
		modelQuerier.setConditionConverter(this);
	}

	/**
	 * Converts a condition
	 * @param oldObject
	 * @return
	 */
	public Condition convert(Conditions oldObject) {
		fieldsInLastCond.clear();

		// [COND - AndOr]
		ANDCond newCondition = new ANDCond();

		if (oldObject.getSimpleConditions().size() == 0
				&& oldObject.getEitherConditionsBlockCount() == 0) {
			return EmptyCond.TRUE;
		}

		for (es.eucm.eadventure.common.data.chapter.conditions.Condition c : oldObject
				.getSimpleConditions()) {
			Condition newC = getSimpleCondition(c);
			if (newC != null) {
				newCondition.addCondition(newC);
			}

		}

		for (int i = 0; i < oldObject.getEitherConditionsBlockCount(); i++) {
			ORCond orCondition = new ORCond();
			Conditions conditions = oldObject.getEitherBlock(i);
			for (es.eucm.eadventure.common.data.chapter.conditions.Condition c : conditions
					.getSimpleConditions()) {
				Condition cond = this.getSimpleCondition(c);
				if (cond != null) {
					orCondition.addCondition(cond);
				}
			}
			if (orCondition.getConditions().size() > 0) {
				newCondition.addCondition(orCondition);
			}
		}

		return newCondition;
	}

	private Condition getSimpleCondition(
			es.eucm.eadventure.common.data.chapter.conditions.Condition c) {
		if (c.getType() == es.eucm.eadventure.common.data.chapter.conditions.Condition.FLAG_CONDITION) {
			OperationCond cond = flagConditionConverter
					.convert((FlagCondition) c);
			fieldsInLastCond.add((ElementField) cond.getOp1());
			return cond;
		} else if (c.getType() == es.eucm.eadventure.common.data.chapter.conditions.Condition.VAR_CONDITION) {
			OperationCond cond = varConditionConverter
					.convert((VarCondition) c);
			fieldsInLastCond.add((ElementField) cond.getOp1());
			return cond;
		} else if (c.getType() == es.eucm.eadventure.common.data.chapter.conditions.Condition.GLOBAL_STATE_CONDITION) {
			// [COND - State]
			Condition cond = modelQuerier.getGlobalState(c.getId());
			cond.extractFields(fieldsInLastCond);
			return cond;
		}
		return null;
	}

	public List<ElementField> getFieldsLastCondition() {
		return fieldsInLastCond;
	}

}