moveatomedit.java

化学图形处理软件

/* $RCSfile$
 * $Author: egonw $
 * $Date: 2007-01-04 18:26:00 +0100 (Thu, 04 Jan 2007) $
 * $Revision: 7634 $
 *
 * Copyright (C) 2005-2007  The Chemistry Development Kit (CDK) project
 *
 * Contact: [e-mail]
 *
 * This program 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 2.1
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package org.openscience.cdk.applications.undoredo;

import java.util.HashMap;

import javax.swing.undo.AbstractUndoableEdit;
import javax.swing.undo.CannotRedoException;
import javax.swing.undo.CannotUndoException;
import javax.vecmath.Point2d;

import org.openscience.cdk.interfaces.IAtom;
import org.openscience.cdk.interfaces.IAtomContainer;

/**
 * @cdk.module control
 */
public class MoveAtomEdit extends AbstractUndoableEdit {

    private static final long serialVersionUID = -2277790465507859547L;

    private IAtomContainer undoRedoContainer;

	private int deltaX;
	
	private int deltaY;
	
	private HashMap renderingCoordinates;

	public MoveAtomEdit(IAtomContainer undoRedoContainer, int deltaX, int deltaY, HashMap renderingCoordinates) {
		this.undoRedoContainer = undoRedoContainer;
		this.deltaX=deltaX;
		this.deltaY=deltaY;
		this.renderingCoordinates=renderingCoordinates;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.swing.undo.UndoableEdit#redo()
	 */
	public void redo() throws CannotRedoException {
		for (int i = 0; i < undoRedoContainer.getAtomCount(); i++) {
			IAtom atom=undoRedoContainer.getAtom(i);
			((Point2d)renderingCoordinates.get(atom)).x+=deltaX;
			((Point2d)renderingCoordinates.get(atom)).y+=deltaY;
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.swing.undo.UndoableEdit#undo()
	 */
	public void undo() throws CannotUndoException {
		for (int i = 0; i < undoRedoContainer.getAtomCount(); i++) {
			IAtom atom=undoRedoContainer.getAtom(i);
			((Point2d)renderingCoordinates.get(atom)).x-=deltaX;
			((Point2d)renderingCoordinates.get(atom)).y-=deltaY;
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.swing.undo.UndoableEdit#canRedo()
	 */
	public boolean canRedo() {
		return true;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.swing.undo.UndoableEdit#canUndo()
	 */
	public boolean canUndo() {
		return true;
	}

}