net.bioclipse.metaprint2d.ui.actions.MetaPrint2DBatchHandler.java Source code

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Here is the source code for net.bioclipse.metaprint2d.ui.actions.MetaPrint2DBatchHandler.java

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/*******************************************************************************
 * Copyright (c) 2009 Ola Spjuth.
 * 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:
 *     Ola Spjuth - initial API and implementation
 ******************************************************************************/
package net.bioclipse.metaprint2d.ui.actions;

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

import net.bioclipse.metaprint2d.ui.Activator;
import net.bioclipse.metaprint2d.ui.business.IMetaPrint2DManager;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;

public class MetaPrint2DBatchHandler extends AbstractHandler {

    //   private ISelection selection;

    public Object execute(ExecutionEvent event) throws ExecutionException {

        ISelection selection = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService()
                .getSelection();
        if (selection == null) {
            showError("Selection is empty");
            return null;
        }

        if (!(selection instanceof IStructuredSelection)) {
            showError("Selection does not contain an SDF or CML file.");
            return null;
        }

        IStructuredSelection ssel = (IStructuredSelection) selection;

        IMetaPrint2DManager m2d = Activator.getDefault().getMetaPrint2DManager();

        List<String> errors = new ArrayList<String>();

        for (Object obj : ssel.toList()) {
            if (obj instanceof IFile) {
                IFile file = (IFile) obj;
                try {
                    m2d.calculate(file, true);
                } catch (Exception e) {
                    e.printStackTrace();
                    errors.add(" Error calculating file: '" + file + "': " + e.getMessage());
                }
            }
        }

        if (errors.size() > 0) {
            String emsg = "Metaprint2D calculation experienced the following errors:\n";
            for (String er : errors) {
                emsg = emsg + "\n - " + er;
            }
            showError(emsg);
        }

        return null;

    }

    private void showError(String emsg) {

        MessageDialog.openError(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), "Error", emsg);

    }

    //   public void selectionChanged(IWorkbenchPart part, ISelection selection) {
    //      this.selection=selection;
    //   }

}