Application: gvSIG desktop » gvSIG Document Layout

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * This program 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 2

 * 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.app.extension;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.app.project.documents.layout.gui.LayoutPanel;

import org.gvsig.tools.undo.UndoException;

public class LayoutUndoExtension extends Extension {

    public void initialize() {

        registerIcons();

    }

    private void registerIcons() {

        IconThemeHelper.registerIcon("action", "edit-undo", this);

    }

    public void execute(String actionCommand) {

        LayoutPanel layout =

            (LayoutPanel) PluginServices.getMDIManager().getActiveWindow();

        if (actionCommand.equals("edit-undo-layout")) {

            try {

                layout.getLayoutContext().getFrameCommandsRecord().undo();

            } catch (UndoException e) {

                NotificationManager.showMessageError("Undo layout", e);

            }

            layout.getLayoutContext().updateFFrames();

            layout.getLayoutControl().refresh();

            layout.getDocument().setModified(true);

        }

    }

    public boolean isEnabled() {

        if (PluginServices.getMDIManager().getActiveWindow() instanceof LayoutPanel) {

            LayoutPanel layout =

                (LayoutPanel) PluginServices.getMDIManager().getActiveWindow();

            if (layout.getLayoutContext().getFrameCommandsRecord().canUndo()

                && layout.getLayoutContext().isEditable())

                return true;

        }

        return false;

    }

    public boolean isVisible() {

        if (PluginServices.getMDIManager().getActiveWindow() instanceof LayoutPanel) {

            return true;

        }

        return false;

    }

}