Examples with IPropertyChangeListener org.eclipse.jface.util.IPropertyChangeListener used on opensource projects

Example 31 with IPropertyChangeListener

use of org.eclipse.jface.util.IPropertyChangeListener in project epp.mpc by eclipse.

the class MarketplacePage method createControl.

@Override
public void createControl(final Composite parent) {
    currentBranding = getDefaultBranding();
    boolean needSwitchMarketplaceControl = configuration.getCatalogDescriptors().size() > 1;
    Composite pageContent = new Composite(parent, SWT.NULL);
    GridLayoutFactory.fillDefaults().numColumns(1).spacing(0, 5).applyTo(pageContent);
    tabFolder = new TabFolder(pageContent, SWT.TOP);
    GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).grab(true, true).applyTo(tabFolder);
    super.createControl(tabFolder);
    tabContent = getControl();
    searchTabItem = createCatalogTab(-1, ContentType.SEARCH, WIDGET_ID_TAB_SEARCH, currentBranding.getSearchTabName());
    recentTabItem = createCatalogTab(-1, ContentType.RECENT, WIDGET_ID_TAB_RECENT, currentBranding.getRecentTabName());
    popularTabItem = createCatalogTab(-1, ContentType.POPULAR, WIDGET_ID_TAB_POPULAR, currentBranding.getPopularTabName());
    favoritedTabItem = createCatalogTab(-1, ContentType.FAVORITES, WIDGET_ID_TAB_FAVORITES, getFavoritedTabName(currentBranding));
    installedTabItem = createCatalogTab(-1, ContentType.INSTALLED, WIDGET_ID_TAB_INSTALLED, Messages.MarketplacePage_installed);
    updateNewsTab();
    searchTabItem.setControl(tabContent);
    tabFolder.setSelection(searchTabItem);
    tabFolder.addSelectionListener(new SelectionListener() {

        public void widgetSelected(SelectionEvent e) {
            if (e.item.isDisposed()) {
                return;
            }
            setActiveTab((TabItem) e.item);
        }

        public void widgetDefaultSelected(SelectionEvent e) {
            widgetSelected(e);
        }
    });
    {
        // TODO id
        contentListLinks = new Link(pageContent, SWT.NULL);
        contentListLinks.setToolTipText(Messages.MarketplacePage_showSelection);
        contentListLinks.addSelectionListener(new SelectionListener() {

            public void widgetSelected(SelectionEvent e) {
                String actionId = e.text;
                ActionLink actionLink = actions.get(actionId);
                if (actionLink != null) {
                    actionLink.selected();
                }
            }

            public void widgetDefaultSelected(SelectionEvent e) {
                widgetSelected(e);
            }
        });
        GridDataFactory.swtDefaults().align(SWT.CENTER, SWT.CENTER).applyTo(contentListLinks);
        updateSelectionLink();
    }
    if (needSwitchMarketplaceControl) {
        createMarketplaceSwitcher(pageContent);
    }
    updateBranding();
    // bug 312411: a selection listener so that we can streamline install of single product
    getViewer().addSelectionChangedListener(new ISelectionChangedListener() {

        private int previousSelectionSize = 0;

        public void selectionChanged(SelectionChangedEvent event) {
            if (!isCurrentPage()) {
                return;
            }
            SelectionModel selectionModel = getWizard().getSelectionModel();
            int newSelectionSize = selectionModel.getItemToSelectedOperation().size();
            // sets the empty selection whenever the catalog is updated.
            if (!event.getSelection().isEmpty()) {
                if (previousSelectionSize == 0 && newSelectionSize > 0 && selectionModel.computeProvisioningOperationViableForFeatureSelection()) {
                    showNextPage();
                }
            }
            previousSelectionSize = newSelectionSize;
        }
    });
    getViewer().addPropertyChangeListener(new IPropertyChangeListener() {

        public void propertyChange(PropertyChangeEvent event) {
            if (event.getProperty().equals(MarketplaceViewer.CONTENT_TYPE_PROPERTY) && event.getNewValue() != null) {
                setActiveTab((ContentType) event.getNewValue());
            }
        }
    });
    setControl(pageContent);
    if (!tabContent.isDisposed()) {
        // bug 473031 - no clue how this can happen during createControl...
        MarketplaceClientUi.setDefaultHelp(tabContent);
    }
}

Example 32 with IPropertyChangeListener

use of org.eclipse.jface.util.IPropertyChangeListener in project epp.mpc by eclipse.

the class MarketplaceWizardCommand method createConfiguration.

@Override
protected MarketplaceCatalogConfiguration createConfiguration(final MarketplaceCatalog catalog, ExecutionEvent event) {
    MarketplaceCatalogConfiguration configuration = super.createConfiguration(catalog, event);
    if (configuration == null) {
        // errors have already been logged, just return
        return null;
    }
    configuration.getFilters().clear();
    final ComboTagFilter marketFilter = new ComboTagFilter() {

        @Override
        public void catalogUpdated(boolean wasCancelled) {
            List<Tag> choices = new ArrayList<Tag>();
            List<IMarket> markets = catalog.getMarkets();
            for (IMarket market : markets) {
                Tag marketTag = new Tag(IMarket.class, market.getId(), market.getName());
                marketTag.setData(market);
                choices.add(marketTag);
            }
            setChoices(choices);
        }
    };
    marketFilter.setSelectAllOnNoSelection(true);
    marketFilter.setNoSelectionLabel(Messages.MarketplaceWizardCommand_allMarkets);
    marketFilter.setTagClassification(ICategory.class);
    marketFilter.setChoices(new ArrayList<Tag>());
    final ComboTagFilter marketCategoryTagFilter = new ComboTagFilter() {

        @Override
        public void catalogUpdated(boolean wasCancelled) {
            updateCategoryChoices(this, marketFilter);
        }
    };
    marketCategoryTagFilter.setSelectAllOnNoSelection(true);
    marketCategoryTagFilter.setNoSelectionLabel(Messages.MarketplaceWizardCommand_allCategories);
    marketCategoryTagFilter.setTagClassification(ICategory.class);
    marketCategoryTagFilter.setChoices(new ArrayList<Tag>());
    final IPropertyChangeListener marketListener = new IPropertyChangeListener() {

        public void propertyChange(PropertyChangeEvent event) {
            final String property = event.getProperty();
            if (AbstractTagFilter.PROP_SELECTED.equals(property)) {
                updateCategoryChoices(marketCategoryTagFilter, marketFilter);
            }
        }
    };
    marketFilter.addPropertyChangeListener(marketListener);
    configuration.getFilters().add(marketFilter);
    configuration.getFilters().add(marketCategoryTagFilter);
    configuration.setInitialState(wizardState);
    if (operations != null && !operations.isEmpty()) {
        configuration.setInitialOperations(operations);
    }
    for (CatalogFilter filter : configuration.getFilters()) {
        ((MarketplaceFilter) filter).setCatalog(catalog);
    }
    return configuration;
}

Example 33 with IPropertyChangeListener

use of org.eclipse.jface.util.IPropertyChangeListener in project polymap4-core by Polymap4.

the class CommonNavigatorActionGroup method makeActions.

/**
 */
private void makeActions() {
    FrameList frameList = commonViewer.getFrameList();
    backAction = new BackAction(frameList);
    forwardAction = new ForwardAction(frameList);
    upAction = new UpAction(frameList);
    frameList.addPropertyChangeListener(new IPropertyChangeListener() {

        public void propertyChange(PropertyChangeEvent event) {
            if (event.getProperty().equals(FrameList.P_RESET)) {
                upAction.setEnabled(false);
                backAction.setEnabled(false);
                forwardAction.setEnabled(false);
            }
            commonNavigator.updateTitle();
            IActionBars actionBars = commonNavigator.getViewSite().getActionBars();
            updateToolBar(actionBars.getToolBarManager());
        }
    });
    IHandlerService service = (IHandlerService) commonNavigator.getSite().getService(IHandlerService.class);
    INavigatorViewerDescriptor viewerDescriptor = commonViewer.getNavigatorContentService().getViewerDescriptor();
    boolean hideLinkWithEditorAction = viewerDescriptor.getBooleanConfigProperty(INavigatorViewerDescriptor.PROP_HIDE_LINK_WITH_EDITOR_ACTION);
    if (!hideLinkWithEditorAction) {
        toggleLinkingAction = new LinkEditorAction(commonNavigator, commonViewer, linkHelperService);
        // $NON-NLS-1$
        ImageDescriptor syncIcon = getImageDescriptor("elcl16/synced.gif");
        toggleLinkingAction.setImageDescriptor(syncIcon);
        toggleLinkingAction.setHoverImageDescriptor(syncIcon);
        service.activateHandler(toggleLinkingAction.getActionDefinitionId(), new ActionHandler(toggleLinkingAction));
    }
    boolean hideCollapseAllAction = viewerDescriptor.getBooleanConfigProperty(INavigatorViewerDescriptor.PROP_HIDE_COLLAPSE_ALL_ACTION);
    if (!hideCollapseAllAction) {
        collapseAllAction = new CollapseAllAction(commonViewer);
        // $NON-NLS-1$
        ImageDescriptor collapseAllIcon = getImageDescriptor("elcl16/collapseall.gif");
        collapseAllAction.setImageDescriptor(collapseAllIcon);
        collapseAllAction.setHoverImageDescriptor(collapseAllIcon);
        collapseAllHandler = new CollapseAllHandler(commonViewer);
        service.activateHandler(CollapseAllHandler.COMMAND_ID, collapseAllHandler);
    }
    filterGroup = new FilterActionGroup(commonViewer);
}

Example 34 with IPropertyChangeListener

use of org.eclipse.jface.util.IPropertyChangeListener in project netxms by netxms.

the class AlarmTab 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 IDialogSettings settings = Activator.getDefault().getDialogSettings();
    initShowFilter = settings.getBoolean("AlarmTab.showFilter");
    alarmList = new AlarmList(getViewPart(), parent, SWT.NONE, getConfigPrefix(), new VisibilityValidator() {

        @Override
        public boolean isVisible() {
            return isActive();
        }
    });
    alarmList.addDisposeListener(new DisposeListener() {

        @Override
        public void widgetDisposed(DisposeEvent e) {
            settings.put("AlarmTab.showFilter", alarmList.isFilterEnabled());
        }
    });
    // Force update of "show colors" menu item in object tabbed view
    // when settings changes in any alarm viewer
    propertyChangeListener = new IPropertyChangeListener() {

        @Override
        public void propertyChange(PropertyChangeEvent event) {
            if (// $NON-NLS-1$
            event.getProperty().equals("SHOW_ALARM_STATUS_COLORS")) {
                ICommandService service = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class);
                service.refreshElements("org.netxms.ui.eclipse.alarmviewer.commands.show_status_colors", null);
            }
        }
    };
    Activator.getDefault().getPreferenceStore().addPropertyChangeListener(propertyChangeListener);
    alarmList.setFilterCloseAction(new Action() {

        @Override
        public void run() {
            alarmList.enableFilter(false);
            ICommandService service = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class);
            // $NON-NLS-1$
            Command command = service.getCommand("org.netxms.ui.eclipse.alarmviewer.commands.show_filter_alarm_list");
            // $NON-NLS-1$
            State state = command.getState("org.netxms.ui.eclipse.alarmviewer.commands.show_filter_alarm_list.state");
            state.setValue(false);
            service.refreshElements(command.getId(), null);
        }
    });
    alarmList.enableFilter(initShowFilter);
}

Example 35 with IPropertyChangeListener

use of org.eclipse.jface.util.IPropertyChangeListener in project webtools.sourceediting by eclipse.

the class HTMLSyntaxColoringPage method createContents.

protected Control createContents(final Composite parent) {
    initializeDialogUnits(parent);
    fDefaultForeground = parent.getDisplay().getSystemColor(SWT.COLOR_LIST_FOREGROUND);
    fDefaultBackground = parent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND);
    Composite pageComponent = createComposite(parent, 2);
    PlatformUI.getWorkbench().getHelpSystem().setHelp(pageComponent, IHelpContextIds.HTML_PREFWEBX_STYLES_HELPID);
    Link link = new Link(pageComponent, SWT.WRAP);
    link.setText(SSEUIMessages.SyntaxColoring_Link);
    link.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent e) {
            PreferencesUtil.createPreferenceDialogOn(parent.getShell(), e.text, null, null);
        }
    });
    GridData linkData = new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1);
    // only expand further if anyone else requires it
    linkData.widthHint = 150;
    link.setLayoutData(linkData);
    new Label(pageComponent, SWT.NONE).setLayoutData(new GridData());
    new Label(pageComponent, SWT.NONE).setLayoutData(new GridData());
    SashForm editor = new SashForm(pageComponent, SWT.VERTICAL);
    GridData gridData2 = new GridData(SWT.FILL, SWT.FILL, true, true);
    gridData2.horizontalSpan = 2;
    editor.setLayoutData(gridData2);
    SashForm top = new SashForm(editor, SWT.HORIZONTAL);
    Composite styleEditor = createComposite(top, 1);
    ((GridLayout) styleEditor.getLayout()).marginRight = 5;
    ((GridLayout) styleEditor.getLayout()).marginLeft = 0;
    createLabel(styleEditor, HTMLUIMessages.SyntaxColoringPage_0);
    fStylesViewer = createStylesViewer(styleEditor);
    GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true);
    gridData.horizontalIndent = 0;
    Iterator iterator = fStyleToDescriptionMap.values().iterator();
    while (iterator.hasNext()) {
        gridData.widthHint = Math.max(gridData.widthHint, convertWidthInCharsToPixels(iterator.next().toString().length()));
    }
    gridData.heightHint = convertHeightInCharsToPixels(5);
    fStylesViewer.getControl().setLayoutData(gridData);
    Composite editingComposite = createComposite(top, 1);
    ((GridLayout) styleEditor.getLayout()).marginLeft = 5;
    // $NON-NLS-1$
    createLabel(editingComposite, "");
    Button enabler = createCheckbox(editingComposite, HTMLUIMessages.SyntaxColoringPage_2);
    enabler.setEnabled(false);
    enabler.setSelection(true);
    Composite editControls = createComposite(editingComposite, 2);
    ((GridLayout) editControls.getLayout()).marginLeft = 20;
    fForegroundLabel = createLabel(editControls, SSEUIMessages.Foreground_UI_);
    ((GridData) fForegroundLabel.getLayoutData()).verticalAlignment = SWT.CENTER;
    fForegroundLabel.setEnabled(false);
    fForegroundColorEditor = new ColorSelector(editControls);
    Button fForegroundColor = fForegroundColorEditor.getButton();
    GridData gd = new GridData(SWT.BEGINNING, SWT.FILL, false, false);
    fForegroundColor.setLayoutData(gd);
    fForegroundColorEditor.setEnabled(false);
    fForegroundColorEditor.getButton().getAccessible().addAccessibleListener(new AccessibleAdapter() {

        public void getName(final AccessibleEvent e) {
            e.result = SSEUIMessages.Foreground_Color_Selector_Button;
        }
    });
    fBackgroundLabel = createLabel(editControls, SSEUIMessages.Background_UI_);
    ((GridData) fBackgroundLabel.getLayoutData()).verticalAlignment = SWT.CENTER;
    fBackgroundLabel.setEnabled(false);
    fBackgroundColorEditor = new ColorSelector(editControls);
    Button fBackgroundColor = fBackgroundColorEditor.getButton();
    gd = new GridData(SWT.BEGINNING, SWT.FILL, false, false);
    fBackgroundColor.setLayoutData(gd);
    fBackgroundColorEditor.setEnabled(false);
    fBackgroundColorEditor.getButton().getAccessible().addAccessibleListener(new AccessibleAdapter() {

        public void getName(final AccessibleEvent e) {
            e.result = SSEUIMessages.Background_Color_Selector_Button;
        }
    });
    fBold = createCheckbox(editControls, HTMLUIMessages.SyntaxColoringPage_3);
    fBold.setEnabled(false);
    ((GridData) fBold.getLayoutData()).horizontalSpan = 2;
    fItalic = createCheckbox(editControls, HTMLUIMessages.SyntaxColoringPage_4);
    fItalic.setEnabled(false);
    ((GridData) fItalic.getLayoutData()).horizontalSpan = 2;
    fStrike = createCheckbox(editControls, HTMLUIMessages.SyntaxColoringPage_5);
    fStrike.setEnabled(false);
    ((GridData) fStrike.getLayoutData()).horizontalSpan = 2;
    fUnderline = createCheckbox(editControls, HTMLUIMessages.SyntaxColoringPage_6);
    fUnderline.setEnabled(false);
    ((GridData) fUnderline.getLayoutData()).horizontalSpan = 2;
    fClearStyle = new Button(editingComposite, SWT.PUSH);
    // $NON-NLS-1$ = "Restore Default"
    fClearStyle.setText(SSEUIMessages.Restore_Default_UI_);
    fClearStyle.setLayoutData(new GridData(SWT.BEGINNING));
    ((GridData) fClearStyle.getLayoutData()).horizontalIndent = 20;
    fClearStyle.setEnabled(false);
    Composite sampleArea = createComposite(editor, 1);
    ((GridLayout) sampleArea.getLayout()).marginLeft = 5;
    ((GridLayout) sampleArea.getLayout()).marginTop = 5;
    // $NON-NLS-1$ = "&Sample text:"
    createLabel(sampleArea, SSEUIMessages.Sample_text__UI_);
    fPreviewViewer = new SourceViewer(sampleArea, null, SWT.BORDER | SWT.LEFT_TO_RIGHT | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL | SWT.READ_ONLY);
    fText = fPreviewViewer.getTextWidget();
    GridData gridData3 = new GridData(SWT.FILL, SWT.FILL, true, true);
    gridData3.widthHint = convertWidthInCharsToPixels(20);
    gridData3.heightHint = convertHeightInCharsToPixels(5);
    gridData3.horizontalSpan = 2;
    fText.setLayoutData(gridData3);
    fText.setEditable(false);
    // $NON-NLS-1$
    fText.setFont(JFaceResources.getFont("org.eclipse.wst.sse.ui.textfont"));
    fText.addKeyListener(getTextKeyListener());
    fText.addSelectionListener(getTextSelectionListener());
    fText.addMouseListener(getTextMouseListener());
    fText.addTraverseListener(getTraverseListener());
    setAccessible(fText, SSEUIMessages.Sample_text__UI_);
    fDocument = StructuredModelManager.getModelManager().createStructuredDocumentFor(ContentTypeIdForHTML.ContentTypeID_HTML);
    fDocument.set(getExampleText());
    initializeSourcePreviewColors(fPreviewViewer);
    fPreviewViewer.setDocument(fDocument);
    top.setWeights(new int[] { 1, 1 });
    editor.setWeights(new int[] { 1, 1 });
    PlatformUI.getWorkbench().getHelpSystem().setHelp(pageComponent, IHelpContextIds.HTML_PREFWEBX_STYLES_HELPID);
    fStylesViewer.setInput(getStylePreferenceKeys());
    applyStyles();
    fStylesViewer.addSelectionChangedListener(new ISelectionChangedListener() {

        public void selectionChanged(SelectionChangedEvent event) {
            if (!event.getSelection().isEmpty()) {
                Object o = ((IStructuredSelection) event.getSelection()).getFirstElement();
                String namedStyle = o.toString();
                activate(namedStyle);
                if (namedStyle == null)
                    return;
            }
        }
    });
    fForegroundColorEditor.addListener(new IPropertyChangeListener() {

        public void propertyChange(PropertyChangeEvent event) {
            if (event.getProperty().equals(ColorSelector.PROP_COLORCHANGE)) {
                Object o = ((IStructuredSelection) fStylesViewer.getSelection()).getFirstElement();
                String namedStyle = o.toString();
                String prefString = getOverlayStore().getString(namedStyle);
                String[] stylePrefs = ColorHelper.unpackStylePreferences(prefString);
                if (stylePrefs != null) {
                    String oldValue = stylePrefs[0];
                    // open color dialog to get new color
                    String newValue = ColorHelper.toRGBString(fForegroundColorEditor.getColorValue());
                    if (!newValue.equals(oldValue)) {
                        stylePrefs[0] = newValue;
                        String newPrefString = ColorHelper.packStylePreferences(stylePrefs);
                        getOverlayStore().setValue(namedStyle, newPrefString);
                        applyStyles();
                        fText.redraw();
                    }
                }
            }
        }
    });
    fBackgroundColorEditor.addListener(new IPropertyChangeListener() {

        public void propertyChange(PropertyChangeEvent event) {
            if (event.getProperty().equals(ColorSelector.PROP_COLORCHANGE)) {
                Object o = ((IStructuredSelection) fStylesViewer.getSelection()).getFirstElement();
                String namedStyle = o.toString();
                String prefString = getOverlayStore().getString(namedStyle);
                String[] stylePrefs = ColorHelper.unpackStylePreferences(prefString);
                if (stylePrefs != null) {
                    String oldValue = stylePrefs[1];
                    // open color dialog to get new color
                    String newValue = ColorHelper.toRGBString(fBackgroundColorEditor.getColorValue());
                    if (!newValue.equals(oldValue)) {
                        stylePrefs[1] = newValue;
                        String newPrefString = ColorHelper.packStylePreferences(stylePrefs);
                        getOverlayStore().setValue(namedStyle, newPrefString);
                        applyStyles();
                        fText.redraw();
                        activate(namedStyle);
                    }
                }
            }
        }
    });
    fBold.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent e) {
            super.widgetSelected(e);
            // get current (newly old) style
            Object o = ((IStructuredSelection) fStylesViewer.getSelection()).getFirstElement();
            String namedStyle = o.toString();
            String prefString = getOverlayStore().getString(namedStyle);
            String[] stylePrefs = ColorHelper.unpackStylePreferences(prefString);
            if (stylePrefs != null) {
                String oldValue = stylePrefs[2];
                String newValue = String.valueOf(fBold.getSelection());
                if (!newValue.equals(oldValue)) {
                    stylePrefs[2] = newValue;
                    String newPrefString = ColorHelper.packStylePreferences(stylePrefs);
                    getOverlayStore().setValue(namedStyle, newPrefString);
                    applyStyles();
                    fText.redraw();
                }
            }
        }
    });
    fItalic.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent e) {
            super.widgetSelected(e);
            // get current (newly old) style
            Object o = ((IStructuredSelection) fStylesViewer.getSelection()).getFirstElement();
            String namedStyle = o.toString();
            String prefString = getOverlayStore().getString(namedStyle);
            String[] stylePrefs = ColorHelper.unpackStylePreferences(prefString);
            if (stylePrefs != null) {
                String oldValue = stylePrefs[3];
                String newValue = String.valueOf(fItalic.getSelection());
                if (!newValue.equals(oldValue)) {
                    stylePrefs[3] = newValue;
                    String newPrefString = ColorHelper.packStylePreferences(stylePrefs);
                    getOverlayStore().setValue(namedStyle, newPrefString);
                    applyStyles();
                    fText.redraw();
                }
            }
        }
    });
    fStrike.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent e) {
            super.widgetSelected(e);
            // get current (newly old) style
            Object o = ((IStructuredSelection) fStylesViewer.getSelection()).getFirstElement();
            String namedStyle = o.toString();
            String prefString = getOverlayStore().getString(namedStyle);
            String[] stylePrefs = ColorHelper.unpackStylePreferences(prefString);
            if (stylePrefs != null) {
                String oldValue = stylePrefs[4];
                String newValue = String.valueOf(fStrike.getSelection());
                if (!newValue.equals(oldValue)) {
                    stylePrefs[4] = newValue;
                    String newPrefString = ColorHelper.packStylePreferences(stylePrefs);
                    getOverlayStore().setValue(namedStyle, newPrefString);
                    applyStyles();
                    fText.redraw();
                }
            }
        }
    });
    fUnderline.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent e) {
            super.widgetSelected(e);
            // get current (newly old) style
            Object o = ((IStructuredSelection) fStylesViewer.getSelection()).getFirstElement();
            String namedStyle = o.toString();
            String prefString = getOverlayStore().getString(namedStyle);
            String[] stylePrefs = ColorHelper.unpackStylePreferences(prefString);
            if (stylePrefs != null) {
                String oldValue = stylePrefs[5];
                String newValue = String.valueOf(fUnderline.getSelection());
                if (!newValue.equals(oldValue)) {
                    stylePrefs[5] = newValue;
                    String newPrefString = ColorHelper.packStylePreferences(stylePrefs);
                    getOverlayStore().setValue(namedStyle, newPrefString);
                    applyStyles();
                    fText.redraw();
                }
            }
        }
    });
    fClearStyle.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent e) {
            if (fStylesViewer.getSelection().isEmpty())
                return;
            String namedStyle = ((IStructuredSelection) fStylesViewer.getSelection()).getFirstElement().toString();
            getOverlayStore().setToDefault(namedStyle);
            applyStyles();
            fText.redraw();
            activate(namedStyle);
        }
    });
    return pageComponent;
}