EDIT

import info.bioinfweb.jphyloio.events.type.EventContentType;

import info.bioinfweb.jphyloio.factory.JPhyloIOReaderWriterFactory;

import info.bioinfweb.jphyloio.formatinfo.JPhyloIOFormatInfo;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import org.eclipse.swt.widgets.Combo;

import org.eclipse.swt.widgets.Label;

    private static JPhyloIOReaderWriterFactory factory = new JPhyloIOReaderWriterFactory();

    private static List<JPhyloIOFormatInfo> formats = createFormatInfoList();

    private Text fileTextField;

    private Combo formatComboBox;

    private static List<JPhyloIOFormatInfo> createFormatInfoList() {

        List<JPhyloIOFormatInfo> result = new ArrayList<JPhyloIOFormatInfo>();

        for (String formatID : factory.getFormatIDsSet()) {

            JPhyloIOFormatInfo info = factory.getFormatInfo(formatID);

            if (info.isElementModeled(EventContentType.ALIGNMENT, false)) {  // Check if the current format allows to write alignments.

                result.add(info);

            }

        }

        return Collections.unmodifiableList(result);

    }

        fd_exportConsensusSequenceCB.left = new FormAttachment(0, 10);

        fd_consensusSequenceNameTextField.right = new FormAttachment(100, -10);

        fd_consensusSequenceNameTextField.top = new FormAttachment(exportConsensusSequenceCB, 6);

        fd_consensusSequenceNameTextField.bottom = new FormAttachment(30, 26);

        Label lblFormat = new Label(container, SWT.NONE);

        FormData fd_lblFormat = new FormData();

        fd_lblFormat.top = new FormAttachment(consensusSequenceNameTextField, 25);

        fd_lblFormat.left = new FormAttachment(exportSingleReadsCB, 0, SWT.LEFT);

        lblFormat.setLayoutData(fd_lblFormat);

        lblFormat.setText("Select the export format:");

        Label lblSelectTheData = new Label(container, SWT.NONE);

        fd_exportSingleReadsCB.top = new FormAttachment(lblSelectTheData, 6);

        FormData fd_lblSelectTheData = new FormData();

        fd_lblSelectTheData.left = new FormAttachment(0, 10);

        fd_lblSelectTheData.top = new FormAttachment(0, 10);

        lblSelectTheData.setLayoutData(fd_lblSelectTheData);

        lblSelectTheData.setText("Select the data to export:");

        Label lblSelectTheExport = new Label(container, SWT.NONE);

        FormData fd_lblSelectTheExport = new FormData();

        fd_lblSelectTheExport.top = new FormAttachment(lblFormat, 57);

        fd_lblSelectTheExport.left = new FormAttachment(exportSingleReadsCB, 0, SWT.LEFT);

        lblSelectTheExport.setLayoutData(fd_lblSelectTheExport);

        lblSelectTheExport.setText("Select the export destination:");

        Label lblAlignmentFile = new Label(container, SWT.NONE);

        FormData fd_lblAlignmentFile = new FormData();

        fd_lblAlignmentFile.top = new FormAttachment(lblSelectTheExport, 9);

        fd_lblAlignmentFile.left = new FormAttachment(exportSingleReadsCB, 0, SWT.LEFT);

        lblAlignmentFile.setLayoutData(fd_lblAlignmentFile);

        lblAlignmentFile.setText("Alignment file:");

        fileTextField = new Text(container, SWT.BORDER);

        FormData fd_text = new FormData();

        fd_text.left = new FormAttachment(lblAlignmentFile, 6);

        fd_text.top = new FormAttachment(lblSelectTheExport, 6);

        fileTextField.setLayoutData(fd_text);

        Button btnBrowse = new Button(container, SWT.NONE);

        fd_text.right = new FormAttachment(100, -134);

        FormData fd_btnBrowse = new FormData();

        fd_btnBrowse.left = new FormAttachment(fileTextField, 6);

        fd_btnBrowse.top = new FormAttachment(lblAlignmentFile, -5, SWT.TOP);

        fd_btnBrowse.right = new FormAttachment(100, -10);

        btnBrowse.setLayoutData(fd_btnBrowse);

        btnBrowse.setText("Browse...");

        formatComboBox = new Combo(container, SWT.NONE);

        for (JPhyloIOFormatInfo formatInfo : formats) {

            formatComboBox.add(formatInfo.getFormatName());

        }

        FormData fd_formatComboBox = new FormData();

        fd_formatComboBox.right = new FormAttachment(consensusSequenceNameTextField, 0, SWT.RIGHT);

        fd_formatComboBox.top = new FormAttachment(lblFormat, 6);

        fd_formatComboBox.left = new FormAttachment(exportSingleReadsCB, 0, SWT.LEFT);

        formatComboBox.setLayoutData(fd_formatComboBox);

    }

    /**

     * Returns the <i>JPhyloIO</i> format ID to be used for exporting.

     *

     * @return the format ID or {@code null}, if none was yet selected

     */

    public String getSelectedFormat() {

        if (formatComboBox != null) {

            int index = formatComboBox.getSelectionIndex();

            if (index > -1) {

                formats.get(index).getFormatID();

            }

        }

        return null;