Examples with SortableTableViewer org.netxms.ui.eclipse.widgets.SortableTableViewer used on opensource projects

Example 41 with SortableTableViewer

use of org.netxms.ui.eclipse.widgets.SortableTableViewer in project netxms by netxms.

the class RuleEvents method createContents.

/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
	 */
@Override
protected Control createContents(Composite parent) {
    session = (NXCSession) ConsoleSharedData.getSession();
    editor = (RuleEditor) getElement().getAdapter(RuleEditor.class);
    rule = editor.getRule();
    Composite dialogArea = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.verticalSpacing = WidgetHelper.OUTER_SPACING;
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    dialogArea.setLayout(layout);
    checkInverted = new Button(dialogArea, SWT.CHECK);
    checkInverted.setText(Messages.get().RuleEvents_InvertedRule);
    checkInverted.setSelection(rule.isEventsInverted());
    final String[] columnNames = { Messages.get().RuleEvents_Event };
    final int[] columnWidths = { 300 };
    viewer = new SortableTableViewer(dialogArea, columnNames, columnWidths, 0, SWT.UP, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);
    viewer.setContentProvider(new ArrayContentProvider());
    viewer.setLabelProvider(new EventObjectLabelProvider());
    viewer.setComparator(new ObjectLabelComparator((ILabelProvider) viewer.getLabelProvider()));
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            int size = ((IStructuredSelection) viewer.getSelection()).size();
            deleteButton.setEnabled(size > 0);
        }
    });
    for (EventObject o : session.findMultipleEventObjects(rule.getEvents().toArray(new Long[0]))) events.put(o.getCode(), o);
    viewer.setInput(events.values().toArray());
    GridData gridData = new GridData();
    gridData.verticalAlignment = GridData.FILL;
    gridData.grabExcessVerticalSpace = true;
    gridData.horizontalAlignment = GridData.FILL;
    gridData.grabExcessHorizontalSpace = true;
    gridData.heightHint = 0;
    viewer.getControl().setLayoutData(gridData);
    Composite buttons = new Composite(dialogArea, SWT.NONE);
    RowLayout buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginLeft = 0;
    buttonLayout.marginRight = 0;
    buttons.setLayout(buttonLayout);
    gridData = new GridData();
    gridData.horizontalAlignment = SWT.RIGHT;
    buttons.setLayoutData(gridData);
    addButton = new Button(buttons, SWT.PUSH);
    addButton.setText(Messages.get().RuleEvents_Add);
    addButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            addEvent();
        }
    });
    RowData rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    addButton.setLayoutData(rd);
    deleteButton = new Button(buttons, SWT.PUSH);
    deleteButton.setText(Messages.get().RuleEvents_Delete);
    deleteButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            deleteEvent();
        }
    });
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    deleteButton.setLayoutData(rd);
    deleteButton.setEnabled(false);
    return dialogArea;
}

Example 42 with SortableTableViewer

use of org.netxms.ui.eclipse.widgets.SortableTableViewer in project netxms by netxms.

the class DataSources method createContents.

/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
	 */
@Override
protected Control createContents(Composite parent) {
    config = (AbstractChartConfig) getElement().getAdapter(AbstractChartConfig.class);
    Composite dialogArea = new Composite(parent, SWT.NONE);
    dciList = new ArrayList<ChartDciConfig>();
    for (ChartDciConfig dci : config.getDciList()) dciList.add(new ChartDciConfig(dci));
    labelProvider = new DciListLabelProvider(dciList);
    labelProvider.resolveDciNames(dciList);
    GridLayout layout = new GridLayout();
    layout.verticalSpacing = WidgetHelper.OUTER_SPACING;
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    layout.numColumns = 2;
    dialogArea.setLayout(layout);
    final String[] columnNames = { Messages.get().DataSources_Pos, Messages.get().DataSources_Node, Messages.get().DataSources_Parameter, Messages.get().DataSources_Label, Messages.get().DataSources_Color };
    final int[] columnWidths = { 40, 130, 200, 150, 50 };
    viewer = new SortableTableViewer(dialogArea, columnNames, columnWidths, 0, SWT.UP, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);
    viewer.setContentProvider(new ArrayContentProvider());
    viewer.setLabelProvider(labelProvider);
    viewer.disableSorting();
    /*
       * SWT.PaintItem is not supported on RAP (yet?)
      viewer.getTable().addListener(SWT.PaintItem, new Listener() {
			@Override
			public void handleEvent(Event event)
			{
				if (event.index == COLUMN_COLOR)
					drawColorCell(event);
			}
		});
		*/
    viewer.setInput(dciList.toArray());
    GridData gridData = new GridData();
    gridData.verticalAlignment = GridData.FILL;
    gridData.grabExcessVerticalSpace = true;
    gridData.horizontalAlignment = GridData.FILL;
    gridData.grabExcessHorizontalSpace = true;
    gridData.heightHint = 0;
    gridData.horizontalSpan = 2;
    viewer.getControl().setLayoutData(gridData);
    /* buttons on left side */
    Composite leftButtons = new Composite(dialogArea, SWT.NONE);
    RowLayout buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginWidth = 0;
    buttonLayout.marginLeft = 0;
    leftButtons.setLayout(buttonLayout);
    gridData = new GridData();
    gridData.horizontalAlignment = SWT.LEFT;
    leftButtons.setLayoutData(gridData);
    upButton = new Button(leftButtons, SWT.PUSH);
    upButton.setText(Messages.get().DataSources_Up);
    RowData rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    upButton.setLayoutData(rd);
    upButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            moveUp();
        }
    });
    upButton.setEnabled(false);
    downButton = new Button(leftButtons, SWT.PUSH);
    downButton.setText(Messages.get().DataSources_Down);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    downButton.setLayoutData(rd);
    downButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            moveDown();
        }
    });
    downButton.setEnabled(false);
    /* buttons on right side */
    Composite rightButtons = new Composite(dialogArea, SWT.NONE);
    buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginWidth = 0;
    buttonLayout.marginRight = 0;
    rightButtons.setLayout(buttonLayout);
    gridData = new GridData();
    gridData.horizontalAlignment = SWT.RIGHT;
    rightButtons.setLayoutData(gridData);
    addButton = new Button(rightButtons, SWT.PUSH);
    addButton.setText(Messages.get().DataSources_Add);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    addButton.setLayoutData(rd);
    addButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            addItem();
        }
    });
    editButton = new Button(rightButtons, SWT.PUSH);
    editButton.setText(Messages.get().DataSources_Modify);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    editButton.setLayoutData(rd);
    editButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            editItem();
        }
    });
    editButton.setEnabled(false);
    deleteButton = new Button(rightButtons, SWT.PUSH);
    deleteButton.setText(Messages.get().DataSources_Delete);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    deleteButton.setLayoutData(rd);
    deleteButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            deleteItems();
        }
    });
    deleteButton.setEnabled(false);
    viewer.addDoubleClickListener(new IDoubleClickListener() {

        @Override
        public void doubleClick(DoubleClickEvent event) {
            editButton.notifyListeners(SWT.Selection, new Event());
        }
    });
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
            editButton.setEnabled(selection.size() == 1);
            deleteButton.setEnabled(selection.size() > 0);
            upButton.setEnabled(selection.size() == 1);
            downButton.setEnabled(selection.size() == 1);
        }
    });
    return dialogArea;
}

Example 43 with SortableTableViewer

use of org.netxms.ui.eclipse.widgets.SortableTableViewer in project netxms by netxms.

the class ClusterTab method createTabContent.

/* (non-Javadoc)
	 * @see org.netxms.ui.eclipse.objectview.objecttabs.ObjectTab#createTabContent(org.eclipse.swt.widgets.Composite)
	 */
@Override
protected void createTabContent(Composite parent) {
    final Composite content = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    content.setLayout(layout);
    clusterMap = new NetworkMapWidget(content, null, SWT.NONE);
    GridData gd = new GridData();
    gd.horizontalAlignment = SWT.FILL;
    gd.verticalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    gd.grabExcessVerticalSpace = true;
    clusterMap.setLayoutData(gd);
    clusterMap.setMapLayout(MapLayoutAlgorithm.VTREE);
    final String[] names = { Messages.get().ClusterTab_Resource, Messages.get().ClusterTab_VirtualIP, Messages.get().ClusterTab_Owner };
    final int[] widths = { 200, 120, 150 };
    resourceList = new SortableTableViewer(content, names, widths, COLUMN_NAME, SWT.UP, SortableTableViewer.DEFAULT_STYLE);
    resourceList.setContentProvider(new ArrayContentProvider());
    resourceList.setLabelProvider(new ClusterResourceListLabelProvider());
    resourceList.setComparator(new ClusterResourceListComparator());
    gd = new GridData();
    gd.horizontalAlignment = SWT.FILL;
    gd.verticalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    gd.grabExcessVerticalSpace = false;
    resourceList.getControl().setLayoutData(gd);
}

Example 44 with SortableTableViewer

use of org.netxms.ui.eclipse.widgets.SortableTableViewer in project netxms by netxms.

the class DCIContainerDataSources method createContents.

/*
    * (non-Javadoc)
    * 
    * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
    */
@Override
protected Control createContents(Composite parent) {
    container = (NetworkMapDCIContainer) getElement().getAdapter(NetworkMapDCIContainer.class);
    dciList = container.getDciAsList();
    Composite dialogArea = new Composite(parent, SWT.NONE);
    labelProvider = new DciListLabelProvider(dciList);
    labelProvider.resolveDciNames(dciList);
    GridLayout layout = new GridLayout();
    layout.verticalSpacing = WidgetHelper.OUTER_SPACING;
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    layout.numColumns = 2;
    dialogArea.setLayout(layout);
    final String[] columnNames = { Messages.get().DCIContainerDataSources_ColPos, Messages.get().DCIContainerDataSources_ColNode, Messages.get().DCIContainerDataSources_ColParameter, Messages.get().DCIContainerDataSources_ColName };
    final int[] columnWidths = { 40, 130, 200, 150 };
    viewer = new SortableTableViewer(dialogArea, columnNames, columnWidths, 0, SWT.UP, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);
    viewer.setContentProvider(new ArrayContentProvider());
    viewer.setLabelProvider(labelProvider);
    viewer.disableSorting();
    viewer.setInput(dciList.toArray());
    GridData gridData = new GridData();
    gridData.verticalAlignment = GridData.FILL;
    gridData.grabExcessVerticalSpace = true;
    gridData.horizontalAlignment = GridData.FILL;
    gridData.grabExcessHorizontalSpace = true;
    gridData.heightHint = 0;
    gridData.horizontalSpan = 2;
    viewer.getControl().setLayoutData(gridData);
    /* buttons on left side */
    Composite leftButtons = new Composite(dialogArea, SWT.NONE);
    RowLayout buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginWidth = 0;
    buttonLayout.marginLeft = 0;
    leftButtons.setLayout(buttonLayout);
    gridData = new GridData();
    gridData.horizontalAlignment = SWT.LEFT;
    leftButtons.setLayoutData(gridData);
    upButton = new Button(leftButtons, SWT.PUSH);
    upButton.setText(Messages.get().DCIContainerDataSources_Up);
    RowData rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    upButton.setLayoutData(rd);
    upButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            moveUp();
        }
    });
    upButton.setEnabled(false);
    downButton = new Button(leftButtons, SWT.PUSH);
    downButton.setText(Messages.get().DCIContainerDataSources_Down);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    downButton.setLayoutData(rd);
    downButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            moveDown();
        }
    });
    downButton.setEnabled(false);
    /* buttons on right side */
    Composite rightButtons = new Composite(dialogArea, SWT.NONE);
    buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginWidth = 0;
    buttonLayout.marginRight = 0;
    rightButtons.setLayout(buttonLayout);
    gridData = new GridData();
    gridData.horizontalAlignment = SWT.RIGHT;
    rightButtons.setLayoutData(gridData);
    addButton = new Button(rightButtons, SWT.PUSH);
    addButton.setText(Messages.get().DCIContainerDataSources_Add);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    addButton.setLayoutData(rd);
    addButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            addItem();
        }
    });
    editButton = new Button(rightButtons, SWT.PUSH);
    editButton.setText(Messages.get().DCIContainerDataSources_Modify);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    editButton.setLayoutData(rd);
    editButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            editItem();
        }
    });
    editButton.setEnabled(false);
    deleteButton = new Button(rightButtons, SWT.PUSH);
    deleteButton.setText(Messages.get().DCIContainerDataSources_Delete);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    deleteButton.setLayoutData(rd);
    deleteButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            deleteItems();
        }
    });
    deleteButton.setEnabled(false);
    viewer.addDoubleClickListener(new IDoubleClickListener() {

        @Override
        public void doubleClick(DoubleClickEvent event) {
            editButton.notifyListeners(SWT.Selection, new Event());
        }
    });
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
            editButton.setEnabled(selection.size() == 1);
            deleteButton.setEnabled(selection.size() > 0);
            upButton.setEnabled(selection.size() == 1);
            downButton.setEnabled(selection.size() == 1);
        }
    });
    return dialogArea;
}

Example 45 with SortableTableViewer

use of org.netxms.ui.eclipse.widgets.SortableTableViewer in project netxms by netxms.

the class LinkDataSources method createContents.

/*
    * (non-Javadoc)
    * 
    * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
    */
@Override
protected Control createContents(Composite parent) {
    link = (LinkEditor) getElement().getAdapter(LinkEditor.class);
    dciList = link.getDciList();
    Composite dialogArea = new Composite(parent, SWT.NONE);
    labelProvider = new DciListLabelProvider(dciList);
    labelProvider.resolveDciNames(dciList);
    GridLayout layout = new GridLayout();
    layout.verticalSpacing = WidgetHelper.OUTER_SPACING;
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    layout.numColumns = 2;
    dialogArea.setLayout(layout);
    final String[] columnNames = { Messages.get().LinkDataSources_ColPos, Messages.get().LinkDataSources_ColNode, Messages.get().LinkDataSources_ColParameter, Messages.get().LinkDataSources_ColName };
    final int[] columnWidths = { 40, 130, 200, 150 };
    viewer = new SortableTableViewer(dialogArea, columnNames, columnWidths, 0, SWT.UP, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);
    viewer.setContentProvider(new ArrayContentProvider());
    viewer.setLabelProvider(labelProvider);
    viewer.disableSorting();
    viewer.setInput(dciList.toArray());
    GridData gridData = new GridData();
    gridData.verticalAlignment = GridData.FILL;
    gridData.grabExcessVerticalSpace = true;
    gridData.horizontalAlignment = GridData.FILL;
    gridData.grabExcessHorizontalSpace = true;
    gridData.heightHint = 0;
    gridData.horizontalSpan = 2;
    viewer.getControl().setLayoutData(gridData);
    /* buttons on left side */
    Composite leftButtons = new Composite(dialogArea, SWT.NONE);
    RowLayout buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginWidth = 0;
    buttonLayout.marginLeft = 0;
    leftButtons.setLayout(buttonLayout);
    gridData = new GridData();
    gridData.horizontalAlignment = SWT.LEFT;
    leftButtons.setLayoutData(gridData);
    upButton = new Button(leftButtons, SWT.PUSH);
    upButton.setText(Messages.get().LinkDataSources_Up);
    RowData rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    upButton.setLayoutData(rd);
    upButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            moveUp();
        }
    });
    upButton.setEnabled(false);
    downButton = new Button(leftButtons, SWT.PUSH);
    downButton.setText(Messages.get().LinkDataSources_Down);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    downButton.setLayoutData(rd);
    downButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            moveDown();
        }
    });
    downButton.setEnabled(false);
    /* buttons on right side */
    Composite rightButtons = new Composite(dialogArea, SWT.NONE);
    buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginWidth = 0;
    buttonLayout.marginRight = 0;
    rightButtons.setLayout(buttonLayout);
    gridData = new GridData();
    gridData.horizontalAlignment = SWT.RIGHT;
    rightButtons.setLayoutData(gridData);
    addButton = new Button(rightButtons, SWT.PUSH);
    addButton.setText(Messages.get().LinkDataSources_Add);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    addButton.setLayoutData(rd);
    addButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            addItem();
        }
    });
    editButton = new Button(rightButtons, SWT.PUSH);
    editButton.setText(Messages.get().LinkDataSources_Modify);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    editButton.setLayoutData(rd);
    editButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            editItem();
        }
    });
    editButton.setEnabled(false);
    deleteButton = new Button(rightButtons, SWT.PUSH);
    deleteButton.setText(Messages.get().LinkDataSources_Delete);
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    deleteButton.setLayoutData(rd);
    deleteButton.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }

        @Override
        public void widgetSelected(SelectionEvent e) {
            deleteItems();
        }
    });
    deleteButton.setEnabled(false);
    viewer.addDoubleClickListener(new IDoubleClickListener() {

        @Override
        public void doubleClick(DoubleClickEvent event) {
            editButton.notifyListeners(SWT.Selection, new Event());
        }
    });
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
            editButton.setEnabled(selection.size() == 1);
            deleteButton.setEnabled(selection.size() > 0);
            upButton.setEnabled(selection.size() == 1);
            downButton.setEnabled(selection.size() == 1);
        }
    });
    return dialogArea;
}