/*
 * (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.foundation.wkf.action;

import java.util.Enumeration;
import java.util.Vector;
import java.util.logging.Logger;

import org.openflexo.foundation.FlexoEditor;
import org.openflexo.foundation.FlexoException;
import org.openflexo.foundation.FlexoModelObject;
import org.openflexo.foundation.action.FlexoActionType;
import org.openflexo.foundation.action.FlexoUndoableAction;
import org.openflexo.foundation.action.SetPropertyAction;
import org.openflexo.foundation.wkf.FlexoProcess;
import org.openflexo.foundation.wkf.WKFObject;

public class MoveFlexoProcess extends FlexoUndoableAction<MoveFlexoProcess, FlexoProcess, WKFObject> {

	@SuppressWarnings("unused")
	private static final Logger logger = Logger.getLogger(MoveFlexoProcess.class.getPackage().getName());

	public static FlexoActionType<MoveFlexoProcess, FlexoProcess, WKFObject> actionType = new FlexoActionType<MoveFlexoProcess, FlexoProcess, WKFObject>(
			"move_process", FlexoActionType.defaultGroup, FlexoActionType.NORMAL_ACTION_TYPE) {

		/**
		 * Factory method
		 */
		@Override
		public MoveFlexoProcess makeNewAction(FlexoProcess focusedObject, Vector<WKFObject> globalSelection, FlexoEditor editor) {
			return new MoveFlexoProcess(focusedObject, globalSelection, editor);
		}

		@Override
		public boolean isVisibleForSelection(FlexoProcess object, Vector<WKFObject> globalSelection) {
			return false;
		}

		@Override
		public boolean isEnabledForSelection(FlexoProcess object, Vector<WKFObject> globalSelection) {
			return object != null && !object.isImported();
		}

	};

	static {
		FlexoModelObject.addActionForClass(MoveFlexoProcess.actionType, FlexoProcess.class);
	}

	private SetPropertyAction _setParentProcessAction;
	private FlexoProcess _newParentProcess;

	private boolean doImmediately = false;

	private boolean performValidate = true;

	MoveFlexoProcess(FlexoProcess focusedObject, Vector<WKFObject> globalSelection, FlexoEditor editor) {
		super(actionType, focusedObject, globalSelection, editor);
	}

	@Override
	protected void doAction(Object context) throws FlexoException {
		Vector<FlexoProcess> potentialRoot = new Vector<FlexoProcess>();
		boolean isMovingRoot = getFocusedObject().isRootProcess();
		if (isMovingRoot) {
			Enumeration<FlexoProcess> en = getFocusedObject().getWorkflow().getAllLocalFlexoProcesses().elements();
			while (en.hasMoreElements()) {
				FlexoProcess candidate = en.nextElement();
				if (candidate != getFocusedObject()) {
					if (candidate.getParentProcess() == null) {
						potentialRoot.add(candidate);
					}
				}
			}

			if (potentialRoot.size() == 0) {
				throw new FlexoException("Sorry, you cannot move Root Process since there is no other potential root process.");
			}
		}
		_setParentProcessAction = SetPropertyAction.actionType.makeNewEmbeddedAction(getFocusedObject(), null, this);
		_setParentProcessAction.setKey("parentProcess");
		_setParentProcessAction.setValue(getNewParentProcess());
		_setParentProcessAction.setPerformValidate(getPerformValidate());
		_setParentProcessAction.doAction();
		if (isMovingRoot) {
			FlexoProcess newRoot = potentialRoot.elementAt(0);
			newRoot.getWorkflow().setRootProcess(newRoot);
		}
	}

	@Override
	protected void undoAction(Object context) throws FlexoException {
		_setParentProcessAction.undoAction();
	}

	@Override
	protected void redoAction(Object context) throws FlexoException {
		_setParentProcessAction.redoAction();
	}

	public FlexoProcess getNewParentProcess() {
		return _newParentProcess;
	}

	public void setNewParentProcess(FlexoProcess newParentProcess) {
		_newParentProcess = newParentProcess;
	}

	public boolean isDoImmediately() {
		return doImmediately;
	}

	public void setDoImmediately(boolean doImmediately) {
		this.doImmediately = doImmediately;
	}

	public boolean getPerformValidate() {
		return performValidate;
	}

	public void setPerformValidate(boolean b) {
		this.performValidate = b;
	}

}