net.bpelunit.toolsupport.editors.wizards.components.DataCopyComponent.java Source code

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Here is the source code for net.bpelunit.toolsupport.editors.wizards.components.DataCopyComponent.java

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/**
 * This file belongs to the BPELUnit utility and Eclipse plugin set. See enclosed
 * license file for more information.
 * 
 */
package net.bpelunit.toolsupport.editors.wizards.components;

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

import net.bpelunit.framework.client.eclipse.dialog.FieldBasedInputDialog;
import net.bpelunit.framework.client.eclipse.dialog.field.TextField;
import net.bpelunit.framework.xml.suite.XMLCopy;
import net.bpelunit.framework.xml.suite.XMLTwoWayActivity;
import net.bpelunit.toolsupport.editors.formwidgets.HyperlinkField;
import net.bpelunit.toolsupport.editors.formwidgets.HyperlinkField.IHyperLinkFieldListener;
import net.bpelunit.toolsupport.editors.wizards.NamespaceWizard;
import net.bpelunit.toolsupport.editors.wizards.fields.ListDialogField;
import net.bpelunit.toolsupport.util.XPathValidator;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.window.Window;
import org.eclipse.jface.wizard.IWizardPage;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;

/**
 * The DataCopyComponent contains controls for displaying and editing data copy operations, i.e.
 * XPath expressions describing source and destination of a copy operation.
 * 
 * @version $Id$
 * @author Philip Mayer
 * 
 */
public class DataCopyComponent extends StructuredDataComponent implements IHyperLinkFieldListener {

    private static class CopyListLabelProvider implements ITableLabelProvider {

        public Image getColumnImage(Object element, int columnIndex) {
            return null;
        }

        public String getColumnText(Object element, int columnIndex) {
            if (element instanceof XMLCopy) {
                XMLCopy property = (XMLCopy) element;
                switch (columnIndex) {
                case 0:
                    return property.getFrom();
                case 1:
                    return property.getTo();
                }
            }
            return "";
        }

        public void addListener(ILabelProviderListener listener) {
        }

        public void dispose() {
        }

        public boolean isLabelProperty(Object element, String property) {
            return true;
        }

        public void removeListener(ILabelProviderListener listener) {
        }
    }

    private ListDialogField fDataCopyField;
    private XMLTwoWayActivity fParentActivity;

    public DataCopyComponent(IWizardPage wizard, FontMetrics metrics) {
        super(wizard, metrics);
    }

    @Override
    public void handleAddPressed() {

        String[] edit = editCopy(null);
        if (edit != null) {
            XMLCopy xmlCopy = fParentActivity.getMapping().addNewCopy();
            xmlCopy.setFrom(edit[0]);
            xmlCopy.setTo(edit[1]);
            recreateInput();
            enableButtonsForSelection(fDataCopyField, false);
        }
    }

    @Override
    public void handleEditPressed() {

        XMLCopy current = getSelectedCopy();
        if (current == null)
            return;

        String[] edit = editCopy(current);
        if (edit != null) {
            current.setFrom(edit[0]);
            current.setTo(edit[1]);
            recreateInput();
            enableButtonsForSelection(fDataCopyField, false);
        }

    }

    @Override
    public void handleRemovePressed() {
        XMLCopy copy = getSelectedCopy();
        if (copy != null) {
            int index = fParentActivity.getMapping().getCopyList().indexOf(copy);
            if (index != -1) {
                fParentActivity.getMapping().removeCopy(index);
                recreateInput();
                enableButtonsForSelection(fDataCopyField, false);
            }
        }
    }

    private XMLCopy getSelectedCopy() {
        List<Object> selectedElements = fDataCopyField.getSelectedElements();
        if (selectedElements.size() > 0)
            return ((XMLCopy) selectedElements.get(0));
        else
            return null;
    }

    public void recreateInput() {
        List<Object> l = new ArrayList<Object>();
        for (Object o : fParentActivity.getMapping().getCopyList()) {
            l.add(o);
        }
        fDataCopyField.setElements(l);
    }

    private String[] editCopy(XMLCopy currentProperty) {

        FieldBasedInputDialog dialog = new FieldBasedInputDialog(getWizard().getShell(), "Add a copy operation");

        String initialFrom = currentProperty != null ? currentProperty.getFrom() : null;
        String initialTo = currentProperty != null ? currentProperty.getTo() : null;

        TextField fromField = new TextField(dialog, "Source", initialFrom, TextField.Style.MULTI);
        fromField.setValidator(new XPathValidator("source"));
        dialog.addField(fromField);

        TextField toField = new TextField(dialog, "Target", initialTo, TextField.Style.MULTI);
        toField.setValidator(new XPathValidator("target"));
        dialog.addField(toField);

        if (dialog.open() != Window.OK)
            return null;

        String[] s = new String[2];
        s[0] = fromField.getSelection();
        s[1] = toField.getSelection();
        return s;
    }

    // convertHeightInCharsToPixels(6);
    public void init(XMLTwoWayActivity activity) {

        ListFieldListener copyListener = new ListFieldListener();
        fDataCopyField = new ListDialogField(copyListener, fButtons, new CopyListLabelProvider());
        fDataCopyField.setDialogFieldListener(copyListener);
        fDataCopyField.setTableColumns(new ListDialogField.ColumnsDescription(new String[] { "From", "To" }, true));
        fDataCopyField.setLabelText(null);

        if (activity.getMapping() == null)
            activity.addNewMapping();

        fParentActivity = activity;
        List<Object> l = new ArrayList<Object>();
        for (Object o : fParentActivity.getMapping().getCopyList()) {
            l.add(o);
        }
        fDataCopyField.setElements(l);
        enableButtonsForSelection(fDataCopyField, false);
    }

    @Override
    public Composite createControls(Composite composite, int nColumns) {

        Group group = createGroup(composite, "Data Copy Operations", nColumns,
                new GridData(SWT.FILL, SWT.FILL, true, true));
        fDataCopyField.doFillIntoGrid(group, nColumns);

        final TableViewer tableViewer = fDataCopyField.getTableViewer();
        tableViewer.getTable().setHeaderVisible(true);

        GridData gd = (GridData) fDataCopyField.getListControl(null).getLayoutData();
        gd.heightHint = Dialog.convertHeightInCharsToPixels(getFontMetrics(), 6);

        gd.grabExcessVerticalSpace = false;
        gd.widthHint = getMaxFieldWidth();
        gd.grabExcessHorizontalSpace = true;

        HyperlinkField field = new HyperlinkField("Configure Namespace Prefixes...");
        field.setHyperLinkFieldListener(this);
        field.createControl(group, nColumns, GridData.BEGINNING);

        return group;
    }

    public void hyperLinkActivated() {
        WizardDialog d = new WizardDialog(getShell(), new NamespaceWizard(getTestSuite()));
        d.open();
    }

}