Examples with RowData org.eclipse.swt.layout.RowData used on opensource projects

Example 31 with RowData

use of org.eclipse.swt.layout.RowData in project BiglyBT by BiglySoftware.

the class Legend method createLegendComposite.

public static Composite createLegendComposite(final Composite panel, final Color[] blockColors, final String[] keys, final String[] key_texts, Object layoutData, boolean horizontal, final LegendListener listener) {
    final ConfigurationManager config = ConfigurationManager.getInstance();
    if (blockColors.length != keys.length)
        return null;
    final Color[] defaultColors = new Color[blockColors.length];
    final ParameterListener[] paramListeners = new ParameterListener[keys.length];
    System.arraycopy(blockColors, 0, defaultColors, 0, blockColors.length);
    Composite legend = new Composite(panel, SWT.NONE);
    if (layoutData != null)
        legend.setLayoutData(layoutData);
    RowLayout layout = new RowLayout(horizontal ? SWT.HORIZONTAL : SWT.VERTICAL);
    layout.wrap = true;
    layout.marginBottom = 0;
    layout.marginTop = 0;
    layout.marginLeft = 0;
    layout.marginRight = 0;
    layout.spacing = 0;
    legend.setLayout(layout);
    RowData data;
    final int[] hover_state = { -1, 0 };
    for (int i = 0; i < blockColors.length; i++) {
        int r = config.getIntParameter(keys[i] + ".red", -1);
        if (r >= 0) {
            int g = config.getIntParameter(keys[i] + ".green");
            int b = config.getIntParameter(keys[i] + ".blue");
            Color color = ColorCache.getColor(panel.getDisplay(), r, g, b);
            blockColors[i] = color;
        }
        Composite colorSet = new Composite(legend, SWT.NONE);
        Utils.setLayout(colorSet, new RowLayout(SWT.HORIZONTAL));
        final Canvas cColor = new Canvas(colorSet, SWT.BORDER);
        cColor.setData("Index", new Integer(i));
        Messages.setLanguageTooltip(cColor, "label.click.to.change.tooltip");
        // XXX Use paint instead of setBackgrond, because OSX does translucent
        // crap
        cColor.addPaintListener(new PaintListener() {

            @Override
            public void paintControl(PaintEvent e) {
                int i = ((Integer) cColor.getData("Index")).intValue();
                e.gc.setBackground(blockColors[i]);
                e.gc.fillRectangle(e.x, e.y, e.width, e.height);
            }
        });
        cColor.addMouseListener(new MouseAdapter() {

            @Override
            public void mouseUp(MouseEvent e) {
                Integer iIndex = (Integer) cColor.getData("Index");
                if (iIndex == null)
                    return;
                int index = iIndex.intValue();
                if (e.button == 1) {
                    RGB rgb = Utils.showColorDialog(panel, blockColors[index].getRGB());
                    if (rgb != null) {
                        config.setRGBParameter(keys[index], rgb.red, rgb.green, rgb.blue);
                    }
                } else {
                    config.removeRGBParameter(keys[index]);
                }
            }
        });
        final Label lblDesc = new Label(colorSet, SWT.NULL);
        if (key_texts == null) {
            Messages.setLanguageText(lblDesc, keys[i]);
        } else {
            lblDesc.setText(key_texts[i]);
        }
        if (listener != null) {
            Messages.setLanguageTooltip(lblDesc, "label.click.to.showhide.tooltip");
            final int f_i = i;
            lblDesc.addMouseListener(new MouseAdapter() {

                @Override
                public void mouseUp(MouseEvent e) {
                    boolean vis = !config.getBooleanParameter(keys[f_i] + ".vis", true);
                    config.setParameter(keys[f_i] + ".vis", vis);
                    listener.visibilityChange(vis, f_i);
                    lblDesc.setForeground(vis ? Colors.getSystemColor(lblDesc.getDisplay(), SWT.COLOR_BLACK) : Colors.grey);
                }
            });
            boolean vis = config.getBooleanParameter(keys[f_i] + ".vis", true);
            if (!vis) {
                listener.visibilityChange(vis, i);
                lblDesc.setForeground(Colors.grey);
            }
        }
        data = new RowData();
        data.width = 20;
        data.height = lblDesc.computeSize(SWT.DEFAULT, SWT.DEFAULT).y - 3;
        cColor.setLayoutData(data);
        // If color changes, update our legend
        config.addParameterListener(keys[i], paramListeners[i] = new ParameterListener() {

            @Override
            public void parameterChanged(String parameterName) {
                for (int j = 0; j < keys.length; j++) {
                    if (keys[j].equals(parameterName)) {
                        final int index = j;
                        final int r = config.getIntParameter(keys[j] + ".red", -1);
                        if (r >= 0) {
                            final int g = config.getIntParameter(keys[j] + ".green");
                            final int b = config.getIntParameter(keys[j] + ".blue");
                            Utils.execSWTThread(new AERunnable() {

                                @Override
                                public void runSupport() {
                                    if (panel == null || panel.isDisposed())
                                        return;
                                    Color color = ColorCache.getColor(panel.getDisplay(), r, g, b);
                                    blockColors[index] = color;
                                    cColor.redraw();
                                }
                            });
                        } else {
                            Utils.execSWTThread(new AERunnable() {

                                @Override
                                public void runSupport() {
                                    if (panel == null || panel.isDisposed())
                                        return;
                                    blockColors[index] = defaultColors[index];
                                    cColor.redraw();
                                }
                            });
                        }
                    }
                }
            }
        });
        if (listener != null) {
            final int f_i = i;
            Control[] controls = { colorSet, cColor, lblDesc };
            MouseTrackListener ml = new MouseTrackListener() {

                @Override
                public void mouseEnter(MouseEvent e) {
                    handleHover(listener, true, f_i, hover_state);
                }

                @Override
                public void mouseExit(MouseEvent e) {
                    handleHover(listener, false, f_i, hover_state);
                }

                @Override
                public void mouseHover(MouseEvent e) {
                }
            };
            for (Control c : controls) {
                c.addMouseTrackListener(ml);
            }
        }
    }
    legend.addDisposeListener(new DisposeListener() {

        @Override
        public void widgetDisposed(DisposeEvent e) {
            // We don't want to give them disposed colors
            // Restore defaults in case blockColors is a static or is used
            // afterwards, or if the view wants to dispose of the old colors.
            System.arraycopy(defaultColors, 0, blockColors, 0, blockColors.length);
            for (int i = 0; i < keys.length; i++) config.removeParameterListener(keys[i], paramListeners[i]);
        }
    });
    return legend;
}

Example 32 with RowData

use of org.eclipse.swt.layout.RowData in project netxms by netxms.

the class DciSummaryTable method createContents.

/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
	 */
@Override
protected Control createContents(Composite parent) {
    config = (DciSummaryTableConfig) getElement().getAdapter(DciSummaryTableConfig.class);
    Composite dialogArea = new Composite(parent, SWT.NONE);
    currSortingList = config.getSortingColumnList();
    GridLayout layout = new GridLayout();
    dialogArea.setLayout(layout);
    objectSelector = new ObjectSelector(dialogArea, SWT.NONE, true);
    objectSelector.setLabel(Messages.get().DciSummaryTable_BaseObject);
    objectSelector.setObjectClass(AbstractObject.class);
    objectSelector.setObjectId(config.getBaseObjectId());
    GridData gd = new GridData();
    gd.horizontalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    objectSelector.setLayoutData(gd);
    tableSelector = new SummaryTableSelector(dialogArea, SWT.NONE, AbstractSelector.SHOW_CLEAR_BUTTON);
    tableSelector.setLabel(Messages.get().DciSummaryTable_SummaryTable);
    tableSelector.setTableId(config.getTableId());
    gd = new GridData();
    gd.horizontalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    tableSelector.setLayoutData(gd);
    gd = new GridData();
    gd.verticalAlignment = SWT.TOP;
    gd.horizontalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    refreshInterval = WidgetHelper.createLabeledSpinner(dialogArea, SWT.BORDER, Messages.get().DciSummaryTable_RefreshInterval, 0, 10000, gd);
    refreshInterval.setSelection(config.getRefreshInterval());
    gd = new GridData();
    gd.verticalAlignment = SWT.TOP;
    gd.horizontalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    checkShowSortAndLimitFields = new Button(dialogArea, SWT.CHECK);
    checkShowSortAndLimitFields.setText("Show top N nodes");
    checkShowSortAndLimitFields.setSelection(config.isEnableSortingAndLineLimit());
    checkShowSortAndLimitFields.setLayoutData(gd);
    checkShowSortAndLimitFields.addSelectionListener(new SelectionListener() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            if (checkShowSortAndLimitFields.getSelection()) {
                sortTables.setSelection(null);
                buttonAdd.setEnabled(true);
                numRowsShow.setEnabled(true);
            } else {
                buttonUp.setEnabled(false);
                buttonDown.setEnabled(false);
                buttonEdit.setEnabled(false);
                buttonRemove.setEnabled(false);
                buttonAdd.setEnabled(false);
                numRowsShow.setEnabled(false);
            }
        }

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
        }
    });
    Composite showTopNNodes = new Composite(dialogArea, SWT.BORDER);
    layout = new GridLayout();
    showTopNNodes.setLayout(layout);
    gd = new GridData();
    gd.verticalAlignment = SWT.TOP;
    gd.horizontalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    numRowsShow = WidgetHelper.createLabeledSpinner(showTopNNodes, SWT.BORDER, "Number of lines to show", 0, 10000, gd);
    numRowsShow.setSelection(config.getNumRowShown());
    numRowsShow.setEnabled(config.isEnableSortingAndLineLimit());
    Label label = new Label(showTopNNodes, SWT.NONE);
    label.setText("Sort by columns");
    final String[] columnNames = { "Name", "Sort order" };
    final int[] columnWidths = { 320, 120 };
    sortTables = new SortableTableViewer(showTopNNodes, columnNames, columnWidths, 0, 0, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);
    gd = new GridData();
    gd.horizontalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    gd.verticalAlignment = SWT.FILL;
    gd.grabExcessVerticalSpace = true;
    gd.verticalSpan = 2;
    gd.heightHint = 150;
    sortTables.getTable().setLayoutData(gd);
    sortTables.setContentProvider(new ArrayContentProvider());
    sortTables.setLabelProvider(new SortColumnTableLabelProvider());
    sortTables.setInput(currSortingList);
    sortTables.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            if (checkShowSortAndLimitFields.getSelection()) {
                IStructuredSelection selection = (IStructuredSelection) event.getSelection();
                int index = currSortingList.indexOf(selection.getFirstElement());
                buttonUp.setEnabled((selection.size() == 1) && (index > 0));
                buttonDown.setEnabled((selection.size() == 1) && (index >= 0) && (index < currSortingList.size() - 1));
                buttonEdit.setEnabled(selection.size() == 1);
                buttonRemove.setEnabled(selection.size() > 0);
            } else {
                buttonUp.setEnabled(false);
                buttonDown.setEnabled(false);
                buttonEdit.setEnabled(false);
                buttonRemove.setEnabled(false);
            }
        }
    });
    sortTables.addDoubleClickListener(new IDoubleClickListener() {

        @Override
        public void doubleClick(DoubleClickEvent event) {
            buttonEdit.notifyListeners(SWT.Selection, new Event());
        }
    });
    Composite buttons = new Composite(showTopNNodes, SWT.NONE);
    gd = new GridData();
    gd.horizontalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    buttons.setLayoutData(gd);
    RowLayout buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginWidth = 0;
    buttons.setLayout(buttonLayout);
    buttonUp = new Button(buttons, SWT.PUSH);
    buttonUp.setText("UP");
    buttonUp.addSelectionListener(new SelectionListener() {

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

        @Override
        public void widgetSelected(SelectionEvent e) {
            moveUp();
        }
    });
    RowData rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    buttonUp.setLayoutData(rd);
    buttonUp.setEnabled(false);
    buttonDown = new Button(buttons, SWT.PUSH);
    buttonDown.setText("Down");
    buttonDown.addSelectionListener(new SelectionListener() {

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

        @Override
        public void widgetSelected(SelectionEvent e) {
            moveDown();
        }
    });
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    buttonDown.setLayoutData(rd);
    buttonDown.setEnabled(false);
    gd = new GridData();
    gd.horizontalAlignment = SWT.RIGHT;
    gd.verticalIndent = WidgetHelper.OUTER_SPACING - WidgetHelper.INNER_SPACING;
    buttons.setLayoutData(gd);
    buttonAdd = new Button(buttons, SWT.PUSH);
    buttonAdd.setText("Add");
    buttonAdd.addSelectionListener(new SelectionListener() {

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

        @Override
        public void widgetSelected(SelectionEvent e) {
            add();
        }
    });
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    buttonAdd.setLayoutData(rd);
    buttonAdd.setEnabled(config.isEnableSortingAndLineLimit());
    buttonEdit = new Button(buttons, SWT.PUSH);
    buttonEdit.setText("Edit");
    buttonEdit.addSelectionListener(new SelectionListener() {

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

        @Override
        public void widgetSelected(SelectionEvent e) {
            edit();
        }
    });
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    buttonEdit.setLayoutData(rd);
    buttonEdit.setEnabled(false);
    buttonRemove = new Button(buttons, SWT.PUSH);
    buttonRemove.setText("Delete");
    buttonRemove.addSelectionListener(new SelectionListener() {

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

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

Example 33 with RowData

use of org.eclipse.swt.layout.RowData in project netxms by netxms.

the class IntegerConditionEditor method createContent.

/* (non-Javadoc)
	 * @see org.netxms.ui.eclipse.logviewer.widgets.ConditionEditor#createContent(org.eclipse.swt.widgets.Composite)
	 */
@Override
protected void createContent(Composite parent, ColumnFilter initialFilter) {
    Composite group = new Composite(this, SWT.NONE);
    RowLayout layout = new RowLayout();
    layout.type = SWT.HORIZONTAL;
    layout.marginBottom = 0;
    layout.marginTop = 0;
    layout.marginLeft = 0;
    layout.marginRight = 0;
    group.setLayout(layout);
    GridData gd = new GridData();
    gd.horizontalAlignment = SWT.FILL;
    gd.grabExcessHorizontalSpace = true;
    group.setLayoutData(gd);
    // $NON-NLS-1$
    value1 = toolkit.createText(group, "0");
    RowData rd = new RowData();
    rd.width = 90;
    value1.setLayoutData(rd);
    andLabel = toolkit.createLabel(group, Messages.get().IntegerConditionEditor_And);
    andLabel.setVisible(false);
    // $NON-NLS-1$
    value2 = toolkit.createText(group, "0");
    rd = new RowData();
    rd.width = 90;
    value2.setLayoutData(rd);
    value2.setVisible(false);
    if (initialFilter != null) {
        switch(initialFilter.getType()) {
            case EQUALS:
                setSelectedOperation(initialFilter.isNegated() ? 1 : 0);
                value1.setText(Long.toString(initialFilter.getNumericValue()));
                break;
            case GREATER:
                setSelectedOperation(initialFilter.isNegated() ? 3 : 5);
                value1.setText(Long.toString(initialFilter.getNumericValue()));
                break;
            case LESS:
                setSelectedOperation(initialFilter.isNegated() ? 4 : 2);
                value1.setText(Long.toString(initialFilter.getNumericValue()));
                break;
            case RANGE:
                setSelectedOperation(6);
                andLabel.setVisible(true);
                value2.setVisible(true);
                value1.setText(Long.toString(initialFilter.getRangeFrom()));
                value2.setText(Long.toString(initialFilter.getRangeTo()));
                break;
            default:
                break;
        }
    }
}

Example 34 with RowData

use of org.eclipse.swt.layout.RowData in project netxms by netxms.

the class RulePStorage method createContents.

/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
	 */
@Override
protected Control createContents(Composite parent) {
    editor = (RuleEditor) getElement().getAdapter(RuleEditor.class);
    rule = editor.getRule();
    pStorageDelete.addAll(rule.getPStorageDelete());
    Composite dialogArea = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.verticalSpacing = WidgetHelper.INNER_SPACING;
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    dialogArea.setLayout(layout);
    final int vInd = WidgetHelper.OUTER_SPACING - WidgetHelper.INNER_SPACING;
    Label label = new Label(dialogArea, SWT.NONE);
    label.setText("Set persistent storage values");
    GridData gd = new GridData();
    gd.verticalIndent = vInd;
    label.setLayoutData(gd);
    sEditor = new SetEditor(dialogArea, SWT.NONE);
    sEditor.putAll(rule.getPStorageSet());
    gd = new GridData();
    gd.verticalIndent = vInd;
    gd.verticalAlignment = GridData.FILL;
    gd.grabExcessVerticalSpace = true;
    gd.horizontalAlignment = GridData.FILL;
    gd.grabExcessHorizontalSpace = true;
    sEditor.setLayoutData(gd);
    label = new Label(dialogArea, SWT.NONE);
    label.setText("Delete persistent storage entries");
    gd = new GridData();
    gd.verticalIndent = vInd;
    label.setLayoutData(gd);
    final String[] deleteColumnNames = { "Key" };
    final int[] deleteColumnWidths = { 150 };
    viewerDeleteValue = new SortableTableViewer(dialogArea, deleteColumnNames, deleteColumnWidths, 0, SWT.UP, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);
    viewerDeleteValue.setContentProvider(new ArrayContentProvider());
    viewerDeleteValue.setComparator(new ObjectLabelComparator((ILabelProvider) viewerDeleteValue.getLabelProvider()));
    viewerDeleteValue.setInput(pStorageDelete.toArray());
    viewerDeleteValue.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            int size = ((IStructuredSelection) viewerDeleteValue.getSelection()).size();
            editDeleteValueButton.setEnabled(size == 1);
            removeDeleteValueButton.setEnabled(size > 0);
        }
    });
    gd = new GridData();
    gd.verticalAlignment = GridData.FILL;
    gd.grabExcessVerticalSpace = true;
    gd.horizontalAlignment = GridData.FILL;
    gd.grabExcessHorizontalSpace = true;
    viewerDeleteValue.getControl().setLayoutData(gd);
    Composite buttonsDeleteValue = new Composite(dialogArea, SWT.NONE);
    RowLayout buttonLayout = new RowLayout();
    buttonLayout.type = SWT.HORIZONTAL;
    buttonLayout.pack = false;
    buttonLayout.marginLeft = 0;
    buttonLayout.marginRight = 0;
    buttonsDeleteValue.setLayout(buttonLayout);
    gd = new GridData();
    gd.horizontalAlignment = SWT.RIGHT;
    buttonsDeleteValue.setLayoutData(gd);
    addDeleteValueButton = new Button(buttonsDeleteValue, SWT.PUSH);
    addDeleteValueButton.setText("Add");
    addDeleteValueButton.addSelectionListener(new SelectionListener() {

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

        @Override
        public void widgetSelected(SelectionEvent e) {
            addPStorageDeleteAction();
        }
    });
    RowData rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    addDeleteValueButton.setLayoutData(rd);
    editDeleteValueButton = new Button(buttonsDeleteValue, SWT.PUSH);
    editDeleteValueButton.setText("Edit");
    editDeleteValueButton.addSelectionListener(new SelectionListener() {

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

        @Override
        public void widgetSelected(SelectionEvent e) {
            editPStorageDeleteAction();
        }
    });
    rd = new RowData();
    rd.width = WidgetHelper.BUTTON_WIDTH_HINT;
    editDeleteValueButton.setLayoutData(rd);
    editDeleteValueButton.setEnabled(false);
    removeDeleteValueButton = new Button(buttonsDeleteValue, SWT.PUSH);
    removeDeleteValueButton.setText("Delete");
    removeDeleteValueButton.addSelectionListener(new SelectionListener() {

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

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

Example 35 with RowData

use of org.eclipse.swt.layout.RowData 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;
}