/*
 * (c) Copyright 2010-2011 AgileBirds
 *
 * This file is part of OpenFlexo.
 *
 * OpenFlexo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenFlexo 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openflexo.xml.diff3;

import java.util.Observable;
import java.util.Vector;

import org.jdom2.Element;

public abstract class UnresolvedConflict extends Observable {

	private MergeAction _solveAction;
	private boolean _isManualChoice = false;
	private Vector<MergeAction> _potentialActions;
	private int _conflictIndex;
	private MergeAction _keepYourChangeAction;
	private MergeAction _discardYourChange;
	private XMLDiff3 _merge;

	protected UnresolvedConflict(XMLDiff3 merge, int conflictIndex) {
		super();
		_merge = merge;
		_conflictIndex = conflictIndex;
		_potentialActions = new Vector<MergeAction>();
	}

	public int getConflictIndex() {
		return _conflictIndex;
	}

	public boolean isSolved() {
		return _solveAction != null;
	}

	public void setSolveAction(MergeAction action, boolean isManualChoice) {
		if (isManualChoice) {
			if (_solveAction != null) {
				_solveAction.undo();
			}
		}
		_solveAction = action;
		if (isManualChoice) {
			_solveAction.execute();
		}
		_isManualChoice = isManualChoice;
		_merge.propagateChange();
	}

	public MergeAction getSolveAction() {
		return _solveAction;
	}

	public boolean getIsManualChoice() {
		return _isManualChoice;
	}

	public MergeAction getKeepYourChangeAction() {
		if (_keepYourChangeAction == null) {
			_keepYourChangeAction = buildKeepYourChangeAction();
		}
		return _keepYourChangeAction;
	}

	public MergeAction getDiscardYourChangeAction() {
		if (_discardYourChange == null) {
			_discardYourChange = buildDiscardYourChangeAction();
		}
		return _discardYourChange;
	}

	protected abstract MergeAction buildKeepYourChangeAction();

	protected abstract MergeAction buildDiscardYourChangeAction();

	public void addToPotentialMergeAction(MergeAction action) {
		_potentialActions.add(action);
	}

	public String getXMLStringRepresentation(Element e) {
		return XMLDiff3.getXMLText(e);
	}
}