MoveRowUpAction.java

/*******************************************************************************
 * Copyright (c) 2004, 2008 John Krasnay and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     John Krasnay - initial API and implementation
 *******************************************************************************/
package net.sf.vex.action;

import java.util.List;

import net.sf.vex.core.IntRange;
import net.sf.vex.widget.IVexWidget;

/**
 * Moves the current table row up above its previous sibling.
 */
public class MoveRowUpAction extends AbstractVexAction {

    public void run(final IVexWidget vexWidget) {

        final ActionUtils.SelectedRows selected = ActionUtils.getSelectedTableRows(vexWidget);
        
        if (selected.getRows() == null || selected.getRowBefore() == null) {
            return;
        }
        
        vexWidget.doWork(true, new Runnable() {
            public void run() {
                IntRange range = ActionUtils.getOuterRange(selected.getRowBefore());
                vexWidget.moveTo(range.getStart());
                vexWidget.moveTo(range.getEnd(), true);
                vexWidget.cutSelection();
                
                List rows = selected.getRows();
                Object lastRow = rows.get(rows.size() - 1);
                vexWidget.moveTo(ActionUtils.getOuterRange(lastRow).getEnd());
                vexWidget.paste();
            }
        });
    }

    public boolean isEnabled(IVexWidget vexWidget) {
        ActionUtils.SelectedRows selected = ActionUtils.getSelectedTableRows(vexWidget);
        return selected.getRows() != null && selected.getRowBefore() != null;
    }
    
}