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 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership.
 * 
 * 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 hr.fer.zemris.vhdllab.applets.editor.schema2.model.commands;

import hr.fer.zemris.vhdllab.applets.editor.schema2.enums.EPropertyChange;
import hr.fer.zemris.vhdllab.applets.editor.schema2.exceptions.InvalidCommandOperationException;
import hr.fer.zemris.vhdllab.applets.editor.schema2.interfaces.ICommand;
import hr.fer.zemris.vhdllab.applets.editor.schema2.interfaces.ICommandResponse;
import hr.fer.zemris.vhdllab.applets.editor.schema2.interfaces.ISchemaInfo;
import hr.fer.zemris.vhdllab.applets.editor.schema2.misc.ChangeTuple;
import hr.fer.zemris.vhdllab.applets.editor.schema2.model.CommandResponse;



/**
 * Sluzi za updateanje.
 * 
 * @author Axel
 *
 */
public class EmptyCommand implements ICommand {	

	/* static fields */
	public static final String COMMAND_NAME = EmptyCommand.class.getSimpleName();

	/* private fields */
	private EPropertyChange proptrig;
	

	/* ctors */
	
	public EmptyCommand(EPropertyChange propertyTrigger) {
		proptrig = propertyTrigger;
	}
	
	

	/* methods */
	
	public String getCommandName() {
		return COMMAND_NAME;
	}

	public boolean isUndoable() {
		return true;
	}

	public ICommandResponse performCommand(ISchemaInfo info) {
		return new CommandResponse(new ChangeTuple(proptrig));
	}

	public ICommandResponse undoCommand(ISchemaInfo info) throws InvalidCommandOperationException {
		return new CommandResponse(true);
	}

}