/**
 * This software was developed and / or modified by Raytheon Company,
 * pursuant to Contract DG133W-05-CQ-1067 with the US Government.
 * 
 * U.S. EXPORT CONTROLLED TECHNICAL DATA
 * This software product contains export-restricted data whose
 * export/transfer/disclosure is restricted by U.S. law. Dissemination
 * to non-U.S. persons whether in the United States or abroad requires
 * an export license or other authorization.
 * 
 * Contractor Name:        Raytheon Company
 * Contractor Address:     6825 Pine Street, Suite 340
 *                         Mail Stop B8
 *                         Omaha, NE 68106
 *                         402.291.0100
 * 
 * See the AWIPS II Master Rights File ("Master Rights File.pdf") for
 * further licensing information.
 **/
package com.raytheon.viz.gfe.actions;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;

import com.raytheon.uf.common.status.IUFStatusHandler;
import com.raytheon.uf.common.status.UFStatus;
import com.raytheon.viz.gfe.core.DataManager;
import com.raytheon.viz.gfe.dialogs.CopyGridsDialog;

/**
 * Action for launching CopyGrids dialog.
 * 
 * <pre>
 * SOFTWARE HISTORY
 * Date         Ticket#    Engineer    Description
 * ------------ ---------- ----------- --------------------------
 * 	Feb 27, 2008					Eric Babin Initial Creation
 * Oct 23, 2012 1287       rferrel     Changes for non-blocking CopyGridsDialog.
 * 
 * </pre>
 * 
 * @author ebabin
 * @version 1.0
 */

public class ShowCopyGridsDialog extends AbstractHandler {

    private IUFStatusHandler statusHandler = UFStatus
            .getHandler(ShowCopyGridsDialog.class);

    /**
     * The active dialog. This assumes the dialog is modal. If the dialog is not
     * modal then the current logic will bring the active dialog back to the top
     * no matter which option is selected.
     */
    private CopyGridsDialog dialog;

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands
     * .ExecutionEvent)
     */
    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        DataManager dm = DataManager.getCurrentInstance();
        if (dm == null) {
            return null;
        }

        if (dialog == null || dialog.getShell() == null || dialog.isDisposed()) {
            Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow()
                    .getShell();

            boolean isSelected;
            String selectedOrAll = event.getParameter("selectedOrAll");
            if ("selected".equalsIgnoreCase(selectedOrAll)) {
                isSelected = true;
            } else if ("all".equalsIgnoreCase(selectedOrAll)) {
                isSelected = false;
            } else {
                statusHandler
                        .error("Invalid parmeter \""
                                + selectedOrAll
                                + "\" in ShowCopyGridsDialog. Value must be \"selected\" or \"all\".");
                dialog = null;
                return null;
            }

            dialog = new CopyGridsDialog(shell, dm, isSelected);
            dialog.setBlockOnOpen(false);
            dialog.open();
        } else {
            dialog.bringToTop();
        }

        return null;
    }

}