DeleteSheetAction.java

/* ******************************************************************************
 * Copyright (c) 2006-2012 XMind Ltd. and others.
 * 
 * This file is a part of XMind 3. XMind releases 3 and
 * above are dual-licensed under the Eclipse Public License (EPL),
 * which is available at http://www.eclipse.org/legal/epl-v10.html
 * and the GNU Lesser General Public License (LGPL), 
 * which is available at http://www.gnu.org/licenses/lgpl.html
 * See http://www.xmind.net/license.html for details.
 * 
 * Contributors:
 *     XMind Ltd. - initial API and implementation
 *******************************************************************************/
package org.xmind.ui.internal.actions;

import java.util.ArrayList;
import java.util.List;

import org.xmind.core.ISheet;
import org.xmind.gef.command.Command;
import org.xmind.gef.command.CompoundCommand;
import org.xmind.gef.ui.actions.EditorAction;
import org.xmind.gef.ui.editor.IGraphicalEditor;
import org.xmind.gef.ui.editor.IGraphicalEditorPage;
import org.xmind.ui.actions.MindMapActionFactory;
import org.xmind.ui.commands.CommandMessages;
import org.xmind.ui.commands.DeleteSheetCommand;

public class DeleteSheetAction extends EditorAction {

    public DeleteSheetAction(IGraphicalEditor editor) {
        super(MindMapActionFactory.DELETE_SHEET.getId(), editor);
    }

    public void run() {
        if (isDisposed())
            return;

        IGraphicalEditorPage page = getActivePage();
        if (page != null) {
            ISheet sheet = (ISheet) page.getAdapter(ISheet.class);

            if (sheet == null) {
                Object input = page.getInput();
                if (input instanceof ISheet) {
                    sheet = (ISheet) input;
                }
            }

            if (sheet != null && sheet.getParent().getSheets().size() > 1) {
                saveAndRunDeleteSheetCommand(sheet);
            }
        }
    }

    protected void saveAndRunDeleteSheetCommand(ISheet sheet) {
        List<Command> commands = new ArrayList<Command>();
        DeleteSheetCommand command = new DeleteSheetCommand(sheet);
        command.setLabel(CommandMessages.Command_DeleteSheet);
        commands.add(command);

        saveAndRun(new CompoundCommand(CommandMessages.Command_DeleteSheet,
                commands));
    }

}