Example usage for org.eclipse.jface.viewers IStructuredSelection isEmpty

List of usage examples for org.eclipse.jface.viewers IStructuredSelection isEmpty

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Introduction

In this page you can find the example usage for org.eclipse.jface.viewers IStructuredSelection isEmpty.

Prototype

public boolean isEmpty();

Source Link

Document

Returns whether this selection is empty.

Usage

From source file:com.vectrace.MercurialEclipse.history.MercurialHistoryPage.java

License:Open Source License

private void createTableHistory(Composite parent) {
    Composite composite = new Composite(parent, SWT.NONE);
    GridLayout layout0 = new GridLayout();
    layout0.marginHeight = 0;//from  ww  w . j a  v a  2 s  . co  m
    layout0.marginWidth = 0;
    composite.setLayout(layout0);
    GridData data = new GridData(GridData.FILL_BOTH);
    data.grabExcessVerticalSpace = true;
    composite.setLayoutData(data);

    viewer = new GraphLogTableViewer(composite,
            SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.VIRTUAL, this);
    Table changeLogTable = viewer.getTable();

    changeLogTable.setLinesVisible(true);
    changeLogTable.setHeaderVisible(true);

    GridData gridData = new GridData(GridData.FILL_BOTH);
    changeLogTable.setLayoutData(gridData);

    IPreferenceStore store = MercurialEclipsePlugin.getDefault().getPreferenceStore();
    if (layout == null) {
        layout = new TableLayout();

        // Get the user-defined column widths from the preferences.
        int[] preferredWidths = getColumnWidthsFromPrefsIfEnabled();

        // We set default widths when there's no widths in the preferences or the user is not
        // interested in having their custom widths saved.
        if (preferredWidths == null) {
            layout.addColumnData(new ColumnWeightData(7, true));
            layout.addColumnData(new ColumnWeightData(15, true));
            layout.addColumnData(new ColumnWeightData(10, true));
            layout.addColumnData(new ColumnWeightData(10, true));
            layout.addColumnData(new ColumnWeightData(12, true));
            layout.addColumnData(new ColumnWeightData(12, true));
            layout.addColumnData(new ColumnWeightData(25, true));
        } else {
            // We found column widths in the preference store. We use them.
            for (int colIdx = 0; colIdx < NUMBER_OF_COLUMNS; colIdx++) {
                layout.addColumnData(new ColumnPixelData(preferredWidths[colIdx], true));
            }
        }
    }

    changeLogTable.setLayout(layout);
    for (int i = 0; i < NUMBER_OF_COLUMNS; i++) {
        TableColumn column = new TableColumn(changeLogTable, i == 0 ? SWT.CENTER : SWT.LEFT);
        switch (i) {
        case 0:
            column.setText(Messages.getString("MercurialHistoryPage.columnHeader.graph")); //$NON-NLS-1$
            break;
        case 1:
            column.setText(Messages.getString("MercurialHistoryPage.columnHeader.changeset")); //$NON-NLS-1$
            break;
        case 2:
            column.setText(Messages.getString("MercurialHistoryPage.columnHeader.tag")); //$NON-NLS-1$
            break;
        case 3:
            column.setText(Messages.getString("MercurialHistoryPage.columnHeader.branch")); //$NON-NLS-1$
            break;
        case 4:
            column.setText(Messages.getString("MercurialHistoryPage.columnHeader.user")); //$NON-NLS-1$
            break;
        case 5:
            column.setText(Messages.getString("MercurialHistoryPage.columnHeader.date")); //$NON-NLS-1$
            break;
        case 6:
            column.setText(Messages.getString("MercurialHistoryPage.columnHeader.summary")); //$NON-NLS-1$
            break;
        default:
            // If this shows up in the view, then there was a programming error: please update
            // the number of columns constant.
            column.setText("ERROR!!!"); //$NON-NLS-1$
            break;
        }
        //
        // Listener to be notified of changes in the column width.
        if (store.getBoolean(PREF_HISTORY_COLUMN_PERSISTENCE)) {
            column.addControlListener(new ControlListener() {

                public void controlResized(ControlEvent e) {
                    persistColumnWidths();
                }

                public void controlMoved(ControlEvent e) {
                    // We have no interest in this: the columns aren't defined as moveable.
                }
            });
        }
    }
    viewer.setLabelProvider(new ChangeSetLabelProvider());
    viewer.setContentProvider(new ChangeLogContentProvider());
    viewer.addDoubleClickListener(new IDoubleClickListener() {
        public void doubleClick(DoubleClickEvent event) {
            getCompareWithPreviousAction();
            updateActionEnablement();
            if (compareWithPrevAction.isEnabled()) {
                compareWithPrevAction.run();
            }
        }
    });
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {

        public void selectionChanged(SelectionChangedEvent event) {
            if (!gotoText.isVisible()) {
                return;
            }
            IStructuredSelection selection = getSelection();
            if (selection.isEmpty()) {
                return;
            }
            gotoText.setText(((MercurialRevision) selection.getFirstElement()).getChangeSet().toString());
            gotoText.selectAll();
        }
    });

    viewer.getControl().addFocusListener(new FocusAdapter() {
        @Override
        public void focusGained(FocusEvent e) {
            setSelectionProvider(viewer);
        }
    });
    contributeActions();
}

From source file:com.vectrace.MercurialEclipse.history.MercurialHistoryPage.java

License:Open Source License

public BaseSelectionListenerAction getRevertAction() {
    if (revertAction == null) {
        final String replaceString = Messages.getString("MercurialHistoryPage.replaceCurrentWithSelected");
        final String restoreString = Messages.getString("MercurialHistoryPage.restoreDeletedFile");
        final String undoMoveString = Messages.getString("MercurialHistoryPage.undoMove");
        revertAction = new BaseSelectionListenerAction(replaceString) {
            @Override//  w w  w  . ja  va 2s.  c  o  m
            public void run() {
                IStructuredSelection selection = getStructuredSelection();
                if (selection.isEmpty()) {
                    return;
                }
                ActionRevert revert = new ActionRevert();
                MercurialRevision revision = (MercurialRevision) selection.getFirstElement();
                IResource selectedElement = revision.getResource();
                MercurialStatusCache cache = MercurialStatusCache.getInstance();
                if (!cache.isUnknown(selectedElement) && !cache.isClean(selectedElement)
                        && !MessageDialog.openQuestion(getControl().getShell(),
                                Messages.getString("MercurialHistoryPage.UncommittedChanges"), //$NON-NLS-1$
                                Messages.getString("MercurialHistoryPage.file") + selectedElement.getName() //$NON-NLS-1$
                                        + Messages.getString("MercurialHistoryPage.hasUncommittedChanges"))) { //$NON-NLS-1$
                    return;
                }
                selection = new StructuredSelection(selectedElement);
                revert.setChangesetToRevert(revision.getChangeSet());
                revert.selectionChanged(this, selection);
                revert.run(this);
            }

            @Override
            protected boolean updateSelection(IStructuredSelection sSelection) {
                if (sSelection.size() != 1) {
                    return false;
                }
                if (sSelection.size() == 1) {
                    Object element = sSelection.getFirstElement();
                    if (element instanceof MercurialRevision) {
                        MercurialRevision rev = (MercurialRevision) element;
                        if (rev.getResource() instanceof IFile) {
                            if (rev.getChangeSet().isRemoved(rev.getResource())) {
                                setText(restoreString);
                            } else if (rev.getChangeSet().isMoved(rev.getResource())) {
                                setText(undoMoveString);
                            } else {
                                setText(replaceString);
                            }
                            return true;
                        }
                    }
                }
                return false;
            }
        };
        revertAction.setImageDescriptor(MercurialEclipsePlugin.getImageDescriptor("actions/revert.gif")); //$NON-NLS-1$
    }
    return revertAction;
}

From source file:com.vectrace.MercurialEclipse.repository.RepositoriesView.java

License:Open Source License

/**
 * Contribute actions to the view// w ww .j  av a 2  s .  c  o m
 */
protected void contributeActions() {

    final Shell shell = getShell();

    // Create actions

    // New Repository (popup)
    newAction = new Action(Messages.getString("RepositoriesView.createRepo"), MercurialEclipsePlugin //$NON-NLS-1$
            .getImageDescriptor("wizards/newlocation_wiz.gif")) { //$NON-NLS-1$
        @Override
        public void run() {
            NewLocationWizard wizard = new NewLocationWizard();
            WizardDialog dialog = new WizardDialog(shell, wizard);
            dialog.open();
        }
    };

    // Clone Repository (popup)
    cloneAction = new Action(Messages.getString("RepositoriesView.cloneRepo"), MercurialEclipsePlugin //$NON-NLS-1$
            .getImageDescriptor("clone_repo.gif")) { //$NON-NLS-1$
        @Override
        public void run() {
            IStructuredSelection selection = (IStructuredSelection) treeViewer.getSelection();
            CloneRepoWizard wizard = new CloneRepoWizard();
            wizard.init(PlatformUI.getWorkbench(), selection);
            WizardDialog dialog = new WizardDialog(shell, wizard);
            dialog.open();
        }
    };

    // Init Repository (popup)
    initAction = new InitAction(Messages.getString("RepositoriesView.initRepo"), MercurialEclipsePlugin //$NON-NLS-1$
            .getImageDescriptor("release_rls.gif"), shell);

    // Import project (popup)
    importAction = new Action(Messages.getString("RepositoriesView.importProject"),
            MercurialEclipsePlugin.getImageDescriptor("import_project.gif")) { //$NON-NLS-1$
        @Override
        public void run() {
            IStructuredSelection selection = (IStructuredSelection) treeViewer.getSelection();

            ImportProjectsFromRepoWizard wizard = new ImportProjectsFromRepoWizard();
            wizard.init(PlatformUI.getWorkbench(), selection);
            WizardDialog dialog = new WizardDialog(shell, wizard);
            dialog.open();
        }
    };

    // Properties
    propertiesAction = new SelectionProviderAction(treeViewer, "Properties") {
        @Override
        public void run() {
            IStructuredSelection selection = (IStructuredSelection) treeViewer.getSelection();
            if (selection.isEmpty()) {
                return;
            }
            Object firstElement = selection.getFirstElement();
            PreferenceDialog dialog = createDialog(firstElement);
            if (dialog != null) {
                dialog.open();
            }
            if (!selection.isEmpty()) {
                treeViewer.refresh(firstElement);
            }
        }

        public PreferenceDialog createDialog(Object element) {
            String initialPageId = null;
            if (element instanceof IProject) {
                initialPageId = HgProjectPropertyPage.ID;
            }
            return PropertyDialog.createDialogOn(shell, initialPageId, element);
        }
    };

    IActionBars bars = getViewSite().getActionBars();
    bars.setGlobalActionHandler(ActionFactory.PROPERTIES.getId(), propertiesAction);
    IStructuredSelection selection = (IStructuredSelection) getViewer().getSelection();
    if (selection.size() == 1) {
        propertiesAction.setEnabled(true);
    } else {
        propertiesAction.setEnabled(false);
    }

    getViewer().addSelectionChangedListener(new ISelectionChangedListener() {
        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection ss = (IStructuredSelection) event.getSelection();
            propertiesAction.setEnabled(ss.size() == 1);
        }
    });

    // Remove Root
    removeRootAction = new RemoveRootAction(treeViewer.getControl().getShell());
    removeRootAction.selectionChanged((IStructuredSelection) null);

    bars.setGlobalActionHandler(ActionFactory.DELETE.getId(), removeRootAction);

    // Refresh action (toolbar)
    refreshAction = new Action(Messages.getString("RepositoriesView.refreshRepos"), //$NON-NLS-1$
            MercurialEclipsePlugin.getImageDescriptor("elcl16/refresh.gif")) { //$NON-NLS-1$
        @Override
        public void run() {
            refreshViewer(null, true);
        }
    };
    refreshAction.setToolTipText(Messages.getString("RepositoriesView.refresh")); //$NON-NLS-1$
    refreshAction.setDisabledImageDescriptor(MercurialEclipsePlugin.getImageDescriptor("dlcl16/refresh.gif")); //$NON-NLS-1$
    refreshAction.setHoverImageDescriptor(MercurialEclipsePlugin.getImageDescriptor("clcl16/refresh.gif")); //$NON-NLS-1$
    getViewSite().getActionBars().setGlobalActionHandler(ActionFactory.REFRESH.getId(), refreshAction);

    refreshPopupAction = new Action(Messages.getString("RepositoriesView.refresh"), MercurialEclipsePlugin //$NON-NLS-1$
            .getImageDescriptor("clcl16/refresh.gif")) { //$NON-NLS-1$
        @Override
        public void run() {
            refreshViewerNode();
        }
    };

    // Collapse action
    collapseAllAction = new Action(Messages.getString("RepositoriesView.collapseAll"), //$NON-NLS-1$
            MercurialEclipsePlugin.getImageDescriptor("elcl16/collapseall.gif")) { //$NON-NLS-1$
        @Override
        public void run() {
            collapseAll();
        }
    };
    collapseAllAction.setToolTipText(Messages.getString("RepositoriesView.collapseAll")); //$NON-NLS-1$
    collapseAllAction
            .setHoverImageDescriptor(MercurialEclipsePlugin.getImageDescriptor("clcl16/collapseall.gif")); //$NON-NLS-1$

    // Create the popup menu
    MenuManager menuMgr = new MenuManager();
    Tree tree = treeViewer.getTree();
    Menu menu = menuMgr.createContextMenu(tree);
    menuMgr.addMenuListener(new IMenuListener() {
        public void menuAboutToShow(IMenuManager manager) {
            addWorkbenchActions(manager);
        }

    });
    menuMgr.setRemoveAllWhenShown(true);
    tree.setMenu(menu);
    getSite().registerContextMenu(menuMgr, treeViewer);

    // Create the local tool bar
    IToolBarManager tbm = bars.getToolBarManager();
    IMenuManager mm = bars.getMenuManager();
    drillPart.addNavigationActions(tbm);
    drillPart.addNavigationActions(mm);
    tbm.add(new Separator());
    mm.add(new Separator());
    tbm.add(newAction);
    mm.add(newAction);
    tbm.add(refreshAction);
    mm.add(refreshAction);
    tbm.add(new Separator());
    mm.add(new Separator());
    tbm.add(collapseAllAction);
    mm.add(collapseAllAction);
    tbm.update(false);
    mm.update(false);

    bars.updateActionBars();
}

From source file:com.vectrace.MercurialEclipse.views.PatchQueueView.java

License:Open Source License

protected void updateEnablement(IStructuredSelection selection) {
    assert hgRoot != null;

    boolean isTopSelected = false;
    boolean selectionHasApplied = false;
    for (Iterator<Patch> i = selection.iterator(); i.hasNext();) {
        Patch p = i.next();//from  w ww  .  j a  v  a 2  s  . c o  m
        if (p.equals(topmostAppliedPatch)) {
            isTopSelected = true;
        }

        selectionHasApplied |= p.isApplied();
    }

    boolean isAllApplied = true;
    boolean isAllUnapplied = true;
    for (Patch patch : (List<Patch>) table.getTableViewer().getInput()) {
        if (patch.isApplied()) {
            isAllUnapplied = false;
        } else {
            isAllApplied = false;
        }
    }

    qNewAction.setEnabled(true);
    qRefreshAction.setEnabled(true);
    qImportAction.setEnabled(true);
    qDeleteAction.setEnabled(true);
    qGotoAction.setEnabled(selection.size() == 1 && !isTopSelected);
    qPushAllAction.setEnabled(!isAllApplied);
    qPopAllAction.setEnabled(!isAllUnapplied);
    qFoldAction.setEnabled(!selectionHasApplied && !selection.isEmpty());
    qFinishAction.setEnabled(selectionHasApplied || selection.isEmpty());
    stripAction.setEnabled(true);
}

From source file:com.vectrace.MercurialEclipse.wizards.CloneRepoWizard.java

License:Open Source License

public void init(IWorkbench workbench, IStructuredSelection selection) {
    setWindowTitle(Messages.getString("CloneRepoWizard.title")); //$NON-NLS-1$

    if (!selection.isEmpty()) {
        Object firstElement = selection.getFirstElement();
        if (firstElement instanceof IHgRepositoryLocation) {
            IHgRepositoryLocation repo = (IHgRepositoryLocation) firstElement;
            setDefaultLocation(repo);/*from   www  .  j ava 2 s.  c  om*/
        }
    }
    if (getDefaultLocation() != null) {
        clonePage.setInitialRepo(getDefaultLocation());
    }
}

From source file:com.vectrace.MercurialEclipse.wizards.ImportProjectsFromRepoWizard.java

License:Open Source License

public void init(IWorkbench workbench, IStructuredSelection selection) {
    setWindowTitle("Import Projects from Mercurial repository");
    setNeedsProgressMonitor(true);/*from  w  w w . jav a2s  . co m*/

    if (!selection.isEmpty()) {
        Object firstElement = selection.getFirstElement();
        HgPath path = MercurialEclipsePlugin.getAdapter(firstElement, HgPath.class);
        if (path != null) {
            setInitialData(path);
        } else {
            IResource resource = MercurialEclipsePlugin.getAdapter(firstElement, IResource.class);
            if (resource != null) {
                IPath iPath = ResourceUtils.getPath(resource);
                if (iPath != null && !iPath.isEmpty()) {
                    try {
                        setInitialData(new HgPath(iPath.toOSString()));
                    } catch (IOException e) {
                        MercurialEclipsePlugin.logError(e);
                    }
                }
            }
        }
    }

    importPage = new ProjectsImportPage("ProjectsImportPage");
    importPage.setDestinationSelectionEnabled(true);
    addPage(importPage);
}

From source file:com.vectrace.MercurialEclipse.wizards.MercurialParticipantSynchronizeWizard.java

License:Open Source License

public void init(IWorkbench workbench, IStructuredSelection selection) {
    if (selection != null && !selection.isEmpty()) {
        Object[] array = selection.toArray();
        Set<IProject> roots = new HashSet<IProject>();
        List<IProject> managed = MercurialTeamProvider.getKnownHgProjects();
        for (Object object : array) {
            IResource iResource = ResourceUtils.getResource(object);
            if (iResource != null) {
                IProject another = iResource.getProject();
                for (IProject project : managed) {
                    if (project.equals(another)) {
                        // add project as a root of resource
                        roots.add(project);
                    }/*from w  w w .  j  a  va  2  s .c  o m*/
                }
                if (roots.isEmpty()) {
                    roots.add((IProject) iResource);
                }
            }
        }
        projects = roots.toArray(new IProject[roots.size()]);
    }
}

From source file:com.xyz.article.wizards.HolidayWizard.java

License:Open Source License

/**
 * @see IWorkbenchWizard#init(IWorkbench, IStructuredSelection)
 *//*from   w ww  .j  av a  2s .  c o m*/
public void init(IWorkbench workbench, IStructuredSelection selection) {
    this.workbench = workbench;
    this.selection = selection;
    if (selection != null && !selection.isEmpty()) {
        Object obj = selection.getFirstElement();
        if (obj instanceof IFolder) {
            IFolder folder = (IFolder) obj;
            if (folder.getName().equals("Discounts"))
                model.discounted = true;
        }
    }
}

From source file:crosswalk.diagram.navigator.CrosswalkNavigatorLinkHelper.java

License:Apache License

/**
 * @generated/*w  w  w.  j  a v  a 2  s .  c om*/
 */
public void activateEditor(IWorkbenchPage aPage, IStructuredSelection aSelection) {
    if (aSelection == null || aSelection.isEmpty()) {
        return;
    }
    if (false == aSelection.getFirstElement() instanceof CrosswalkAbstractNavigatorItem) {
        return;
    }

    CrosswalkAbstractNavigatorItem abstractNavigatorItem = (CrosswalkAbstractNavigatorItem) aSelection
            .getFirstElement();
    View navigatorView = null;
    if (abstractNavigatorItem instanceof CrosswalkNavigatorItem) {
        navigatorView = ((CrosswalkNavigatorItem) abstractNavigatorItem).getView();
    } else if (abstractNavigatorItem instanceof CrosswalkNavigatorGroup) {
        CrosswalkNavigatorGroup navigatorGroup = (CrosswalkNavigatorGroup) abstractNavigatorItem;
        if (navigatorGroup.getParent() instanceof CrosswalkNavigatorItem) {
            navigatorView = ((CrosswalkNavigatorItem) navigatorGroup.getParent()).getView();
        }
    }
    if (navigatorView == null) {
        return;
    }
    IEditorInput editorInput = getEditorInput(navigatorView.getDiagram());
    IEditorPart editor = aPage.findEditor(editorInput);
    if (editor == null) {
        return;
    }
    aPage.bringToTop(editor);
    if (editor instanceof DiagramEditor) {
        DiagramEditor diagramEditor = (DiagramEditor) editor;
        ResourceSet diagramEditorResourceSet = diagramEditor.getEditingDomain().getResourceSet();
        EObject selectedView = diagramEditorResourceSet.getEObject(EcoreUtil.getURI(navigatorView), true);
        if (selectedView == null) {
            return;
        }
        GraphicalViewer graphicalViewer = (GraphicalViewer) diagramEditor.getAdapter(GraphicalViewer.class);
        EditPart selectedEditPart = (EditPart) graphicalViewer.getEditPartRegistry().get(selectedView);
        if (selectedEditPart != null) {
            graphicalViewer.select(selectedEditPart);
        }
    }
}

From source file:de.anbos.eclipse.logviewer.plugin.preferences.rule.RulePreferencePage.java

License:Apache License

protected Control createContents(Composite parent) {
    Font font = parent.getFont();
    // define default grid
    Composite pageComponent = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.numColumns = 2;//from   ww  w  . j ava 2  s.com
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    pageComponent.setLayout(layout);

    // list
    GridData data = new GridData(GridData.FILL_BOTH);
    // create table
    table = new Table(pageComponent, SWT.MULTI | SWT.CHECK | SWT.FULL_SELECTION);
    table.setHeaderVisible(true);
    table.setLinesVisible(true);
    table.setFont(parent.getFont());

    TableColumn column1 = new TableColumn(table, SWT.LEFT);
    column1.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.table.header.column0.title")); //$NON-NLS-1$
    column1.setResizable(false);

    TableColumn column2 = new TableColumn(table, SWT.LEFT);
    column2.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.table.header.column1.title")); //$NON-NLS-1$
    column2.setResizable(false);

    int availableRows = availableRows(pageComponent);
    data.heightHint = table.getItemHeight() * (availableRows / 8);
    data.widthHint = TABLE_WIDTH;
    table.setLayoutData(data);

    @SuppressWarnings("unused")
    TableItemColorController tableItemColorController = new TableItemColorController(table);
    //tableItemColorController.notifyAll();

    tableViewer = new CheckboxTableViewer(table);
    tableViewer.setLabelProvider(new RuleLabelProvider());
    tableViewer.setContentProvider(new RuleContentProvider());
    store = new RuleStore(LogViewerPlugin.getDefault().getPreferenceStore());
    store.load();
    tableViewer.setInput(store);
    tableViewer.setAllChecked(false);
    tableViewer.setCheckedElements(store.getAllCheckedRuleDetails());

    tableViewer.addDoubleClickListener(new IDoubleClickListener() {
        public void doubleClick(DoubleClickEvent e) {
            edit();
        }
    });

    tableViewer.addCheckStateListener(new ICheckStateListener() {
        public void checkStateChanged(CheckStateChangedEvent event) {
            RulePreferenceData data = (RulePreferenceData) event.getElement();
            data.setEnabled(event.getChecked());
        }
    });

    tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {

        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection selection = (IStructuredSelection) tableViewer.getSelection();
            boolean selected = !selection.isEmpty();
            editButton.setEnabled(selected);
            removeButton.setEnabled(selected);
            upButton.setEnabled(selected);
            downButton.setEnabled(selected);
            exportSelectedButton.setEnabled(selected);
        }
    });

    tableViewer.setSorter(new ViewerSorter() {
        public int compare(Viewer viewer, Object object1, Object object2) {
            if (!(object1 instanceof RulePreferenceData) || !(object2 instanceof RulePreferenceData)) {
                return super.compare(viewer, object1, object2);
            }
            RulePreferenceData data1 = (RulePreferenceData) object1;
            RulePreferenceData data2 = (RulePreferenceData) object2;
            if (data1.getPosition() > data2.getPosition()) {
                return 1;
            }
            if (data1.getPosition() < data2.getPosition()) {
                return -1;
            }
            if (data1.getPosition() == data2.getPosition()) {
                return 0;
            }
            return super.compare(viewer, object1, object2);
        }

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

    itemMover = new ItemMover(table, store);

    // button pageComponent
    Composite groupComponent = new Composite(pageComponent, SWT.NULL);
    GridLayout groupLayout = new GridLayout();
    groupLayout.marginWidth = 0;
    groupLayout.marginHeight = 0;
    groupComponent.setLayout(groupLayout);
    data = new GridData();
    data.verticalAlignment = GridData.FILL;
    data.horizontalAlignment = GridData.FILL;
    groupComponent.setLayoutData(data);
    groupComponent.setFont(font);

    // buttons
    addButton = new Button(groupComponent, SWT.PUSH);
    addButton.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.button.add")); //$NON-NLS-1$
    addButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            add();
        }
    });
    addButton.setLayoutData(data);
    addButton.setFont(font);
    setButtonLayoutData(addButton);

    editButton = new Button(groupComponent, SWT.PUSH);
    editButton.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.button.edit")); //$NON-NLS-1$
    editButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            edit();
        }
    });
    editButton.setLayoutData(data);
    editButton.setFont(font);
    setButtonLayoutData(editButton);

    removeButton = new Button(groupComponent, SWT.PUSH);
    removeButton.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.button.remove")); //$NON-NLS-1$
    removeButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            remove();
        }
    });
    removeButton.setFont(font);
    setButtonLayoutData(removeButton);

    upButton = new Button(groupComponent, SWT.PUSH);
    upButton.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.button.up")); //$NON-NLS-1$
    upButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            up();
        }
    });
    upButton.setFont(font);
    setButtonLayoutData(upButton);

    downButton = new Button(groupComponent, SWT.PUSH);
    downButton.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.button.down")); //$NON-NLS-1$
    downButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            down();
        }
    });
    downButton.setFont(font);
    setButtonLayoutData(downButton);

    exportSelectedButton = new Button(groupComponent, SWT.PUSH);
    exportSelectedButton
            .setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.button.export.selected")); //$NON-NLS-1$
    exportSelectedButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            exportSelected();
        }
    });
    exportSelectedButton.setFont(font);
    setButtonLayoutData(exportSelectedButton);

    exportAllButton = new Button(groupComponent, SWT.PUSH);
    exportAllButton.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.button.export.all")); //$NON-NLS-1$
    exportAllButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            exportAll();
        }
    });
    exportAllButton.setFont(font);
    setButtonLayoutData(exportAllButton);

    importButton = new Button(groupComponent, SWT.PUSH);
    importButton.setText(LogViewerPlugin.getResourceString("preferences.ruleseditor.button.import")); //$NON-NLS-1$
    importButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            inport();
        }
    });
    importButton.setFont(font);
    setButtonLayoutData(importButton);

    configureTableResizing(table);

    Dialog.applyDialogFont(pageComponent);
    // trigger the resize
    table.getHorizontalBar().setVisible(true);

    // send event to refresh tableViewer
    Event event = new Event();
    event.item = null;
    tableViewer.getTable().notifyListeners(SWT.Selection, event);
    //tableViewer.getControl().setEnabled(true);

    return pageComponent;
}