Application: gvSIG desktop

package org.gvsig.app.gui.command;

import javax.swing.table.AbstractTableModel;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.tools.undo.RedoException;

import org.gvsig.tools.undo.UndoException;

import org.gvsig.tools.undo.UndoRedoStack;

import org.gvsig.tools.undo.command.Command;

@SuppressWarnings("serial")

public class CommandTableModel extends AbstractTableModel{

    private static final Logger LOG = 

        LoggerFactory.getLogger(CommandTableModel.class);

    private UndoRedoStack undoRedoStack;

    public CommandTableModel(UndoRedoStack undoRedoStack) {

        this.undoRedoStack = undoRedoStack;

        }

        public int getPos() {

                if ((undoRedoStack == null) || undoRedoStack.getUndoInfos() == null){

                    return 0;

                }

            return undoRedoStack.getUndoInfos().size() - 1;

        }

        public int getColumnCount() {

                return 1;

        }

        public int getRowCount() {

                if ((undoRedoStack == null) || undoRedoStack.getUndoInfos() == null || undoRedoStack.getRedoInfos() == null){

                    return 0;

                }

                return undoRedoStack.getRedoInfos().size() + undoRedoStack.getUndoInfos().size();

        }

        @SuppressWarnings("unchecked")

    public Object getValueAt(int i, int j) {

                Command[] undos=(Command[])undoRedoStack.getUndoInfos().toArray(new Command[0]);

                Command[] redos=(Command[])undoRedoStack.getRedoInfos().toArray(new Command[0]);

                if (i<undos.length){

                        //System.out.println("undo i=" + i + " index=" + (undos.length-1-i));

                        return undos[undos.length-1-i];

                }else{

                        //System.out.println("redo i=" + i + " index=" + (i-undos.length));

                        return redos[i-undos.length];

                }

        }

        public void setPos(int newpos) {

                try {

                    int currentPos = getPos();

                        if (newpos > currentPos) {

                                undoRedoStack.redo(newpos - currentPos);

                        }else if (newpos < getPos()) {

                                undoRedoStack.undo(currentPos - newpos);

                        }

                } catch (RedoException e) {

                        LOG.error("Error executing the command", e);

                } catch (UndoException e) {

                    LOG.error("Error executing the command", e);

                }

        }

}