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

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

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Introduction

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

Prototype

public Object getFirstElement();

Source Link

Document

Returns the first element in this selection, or null if the selection is empty.

Usage

From source file:ac.soton.xeventb.internal.ui.XTextConvertHandler.java

License:Open Source License

/**
 * Get the current only selected object. If more than one objects are
 * selected, return <code>null</code>.
 * /*www.j a va 2  s  .c  o  m*/
 * @param event
 *          the execution event
 * @return the only selected object.
 * @throws ExecutionException
 *          if some unexpected error occurs.
 */
private Object getCurrentSelectedObject(final ExecutionEvent event) throws ExecutionException {
    ISelection selection = HandlerUtil.getCurrentSelectionChecked(event);
    if ((selection instanceof IStructuredSelection)) {
        IStructuredSelection ssel = ((IStructuredSelection) selection);
        int _size = ssel.size();
        boolean _tripleEquals = (_size == 1);
        if (_tripleEquals) {
            return ssel.getFirstElement();
        }
    }
    return null;
}

From source file:actions.RenameAction.java

License:Open Source License

public void selectionChanged(IAction action, ISelection selection) {
    selectedObject = null;//w ww.  j  a v  a  2s  .c o m
    selectedNameAttribute = null;
    selectedROAttribute = null;
    if (selection instanceof IStructuredSelection) {
        IStructuredSelection structedSelection = (IStructuredSelection) selection;
        if (structedSelection.size() > 0 && ALLOWED_TYPES != null
                && isSupportedType(structedSelection.getFirstElement())) {
            selectedObject = (EObject) structedSelection.getFirstElement();
        }
    }
    if (selectedObject != null && ALLOWED_TYPES != null && !isObjectReadOnly(selectedObject)) {
        action.setEnabled(true);
    } else
        action.setEnabled(false);

}

From source file:algsymboleditor.wizards.NewFencedWizardPage.java

License:Open Source License

/**
 * Checks the current workbench selection for suitability, and then
 * initializes the wizard page./*from w w  w  . j  av  a2s  .  c om*/
 */
private void initialize() {
    if (selection != null && selection.isEmpty() == false && selection instanceof IStructuredSelection) {
        IStructuredSelection ssel = (IStructuredSelection) selection;
        if (ssel.size() > 1)
            return;
        Object obj = ssel.getFirstElement();
        if (obj instanceof IResource) {
            IContainer container;
            if (obj instanceof IContainer)
                container = (IContainer) obj;
            else
                container = ((IResource) obj).getParent();
            containerText.setText(container.getFullPath().toString());
        }
    }
    fileText.setText("new_file.algfenced");
}

From source file:algsymboleditor.wizards.NewQuotientWizardPage.java

License:Open Source License

/**
 * Checks the current workbench selection for suitability, and then
 * initializes the wizard page./*from  w  w w.j  a  v a 2 s.c o m*/
 */
private void initialize() {
    if (selection != null && selection.isEmpty() == false && selection instanceof IStructuredSelection) {
        IStructuredSelection ssel = (IStructuredSelection) selection;
        if (ssel.size() > 1)
            return;
        Object obj = ssel.getFirstElement();
        if (obj instanceof IResource) {
            IContainer container;
            if (obj instanceof IContainer)
                container = (IContainer) obj;
            else
                container = ((IResource) obj).getParent();
            containerText.setText(container.getFullPath().toString());
        }
    }
    fileText.setText("new_file.algquotient");
}

From source file:algsymboleditor.wizards.NewSymbolWizardPage.java

License:Open Source License

/**
 * Checks the current workbench selection for suitability, and then
 * initializes the wizard page./*from   www  .  ja  v  a  2 s . c o m*/
 */
private void initialize() {
    if (selection != null && selection.isEmpty() == false && selection instanceof IStructuredSelection) {
        IStructuredSelection ssel = (IStructuredSelection) selection;
        if (ssel.size() > 1)
            return;
        Object obj = ssel.getFirstElement();
        if (obj instanceof IResource) {
            IContainer container;
            if (obj instanceof IContainer)
                container = (IContainer) obj;
            else
                container = ((IResource) obj).getParent();
            containerText.setText(container.getFullPath().toString());
        }
    }
    fileText.setText("new_file.algsymbol");
}

From source file:alma.acs.eventbrowser.parts.ChannelTreePart.java

License:Open Source License

/**
 * See http://www.vogella.com/articles/EclipseJFaceTree/article.html
 *///from   w ww .java 2  s  .c  o  m
@PostConstruct
public void postConstruct(Composite parent, final IEclipseContext context, EMenuService menuService,
        IEventBroker eventBroker) {
    try {
        eventModel = EventModel.getInstance();
    } catch (Throwable thr) {
        thr.printStackTrace();
        IStatus someStatus = statusReporter.newStatus(IStatus.ERROR, "Connection with NCs failed.", thr);
        statusReporter.report(someStatus, StatusReporter.SHOW);
        throw new RuntimeException(thr);
    }
    //      eventModel.getLogger().info("ChannelTreePart got EventModel instance.");

    statusLineWriter = new StatusLineWriter(eventBroker);

    viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
    viewer.setContentProvider(new ChannelTreeContentProvider());
    viewer.setLabelProvider(new ChannelTreeLabelProvider());
    // Expand the tree. '2' means to show only the visible top-level nodes.
    viewer.setAutoExpandLevel(2);

    viewer.setComparator(new ServiceViewerComparator());

    // Provide the root node to the ContentProvider
    viewer.setInput(eventModel.getNotifyServicesRoot());

    // Expand with doubleclick
    viewer.addDoubleClickListener(new IDoubleClickListener() {
        @Override
        public void doubleClick(DoubleClickEvent event) {
            IStructuredSelection thisSelection = (IStructuredSelection) event.getSelection();
            Object selectedNode = thisSelection.getFirstElement();
            viewer.setExpandedState(selectedNode, !viewer.getExpandedState(selectedNode));
        }
    });

    // Attach a selection listener to our tree that will post selections to the ESelectionService
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {
        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection selection = (IStructuredSelection) event.getSelection();
            selectionService
                    .setSelection(selection.size() == 1 ? selection.getFirstElement() : selection.toArray());
        }
    });

    // TODO: Take care of help system. Here's the E3 code:
    //      // Create the help context id for the viewer's control
    //      PlatformUI.getWorkbench().getHelpSystem().setHelp(viewer.getControl(), "alma.acs.eventbrowser.viewer");

    hookContextMenu(menuService);

    // TODO: this could be used by handlers etc, currently it's not
    context.set(ChannelTreePart.class, this);
}

From source file:alma.acs.eventbrowser.parts.EventListPart.java

License:Open Source License

/**
 *//*  w  w  w.j a  va  2 s  . co  m*/
@PostConstruct
public void postConstruct(Composite parent, final IEclipseContext context, IEventBroker eventBroker,
        EMenuService menuService) {
    try {
        em = EventModel.getInstance();
    } catch (Throwable thr) {
        thr.printStackTrace();
        IStatus someStatus = statusReporter.newStatus(IStatus.ERROR, "Connection with NCs failed.", thr);
        statusReporter.report(someStatus, StatusReporter.SHOW);
        throw new RuntimeException(thr);
    }

    logger = em.getLogger();

    GridLayout gridLayout = new GridLayout();
    gridLayout.marginHeight = 0;
    gridLayout.marginWidth = 0;
    gridLayout.verticalSpacing = 0;
    parent.setLayout(gridLayout);

    // TODO: We currently have the filter text control in the regular view toolbar.
    //       The e3 eventGUI had a "custom tool bar" inserted here.
    //       We should decide which way it's better.

    viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION);
    Table table = viewer.getTable();
    table.setHeaderVisible(true);
    table.setLinesVisible(true);

    /*
     * "Time "+timeStamp+" "+m_channelName+" "+component+" "+count+"
     * "+channelEventCount+" " +" "+evtTypeName+"
     * "+evtCounter.get(evtTypeName)
     */

    TableViewerColumn tvcol = new TableViewerColumn(viewer, SWT.NONE, 0);
    tvcol.setLabelProvider(new TimeStampLabelProvider());
    TableColumn col = tvcol.getColumn();
    col.setText("Timestamp");
    col.setWidth(180);
    col.setAlignment(SWT.LEFT);

    tvcol = new TableViewerColumn(viewer, SWT.NONE, 1);
    tvcol.setLabelProvider(new EventSourceLabelProvider());
    col = tvcol.getColumn();
    col.setText("Event source");
    col.setWidth(150);
    col.setAlignment(SWT.LEFT);

    tvcol = new TableViewerColumn(viewer, SWT.NONE, 2);
    tvcol.setLabelProvider(new CountLabelProvider());
    col = tvcol.getColumn();
    col.setText("# Events in channel");
    col.setWidth(50);
    col.setAlignment(SWT.LEFT);

    tvcol = new TableViewerColumn(viewer, SWT.NONE, 3);
    tvcol.setLabelProvider(new EventTypeLabelProvider());
    col = tvcol.getColumn();
    col.setText("Event type");
    col.setWidth(150);
    col.setAlignment(SWT.LEFT);

    tvcol = new TableViewerColumn(viewer, SWT.NONE, 4);
    tvcol.setLabelProvider(new EventTypeCountLabelProvider());
    col = tvcol.getColumn();
    col.setText("# Events this type");
    col.setWidth(50);
    col.setAlignment(SWT.LEFT);

    GridDataFactory.fillDefaults().grab(true, true).applyTo(viewer.getTable());

    viewer.setContentProvider(new EventListViewContentProvider(em));

    // Attach a selection listener to our event list that will post the selected event for the event details list
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {
        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection selection = (IStructuredSelection) event.getSelection();
            if (selection.size() == 1) {
                selectionService.setSelection(selection.getFirstElement());
            }
        }
    });

    viewer.setInput(new Object());

    hookContextMenu(menuService);

    pel = new PopulateEventList(logger, viewer, new StatusLineWriter(eventBroker), em.getEventQueue(),
            "NC Events");
    eventListThread = pel.getThreadForEventList();
    eventListThread.start();
}

From source file:applicationWorkbench.actions.PlannerPrintAction.java

License:Open Source License

/**
 * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction,
 *      org.eclipse.jface.viewers.ISelection)
 *///from   ww w . j  ava 2 s. c  o m
public void selectionChanged(IAction action, ISelection selection) {
    if (!(selection instanceof IStructuredSelection))
        return;
    IStructuredSelection sel = (IStructuredSelection) selection;
    if (sel.size() != 1)
        return;
    selectedFile = (IFile) sel.getFirstElement();
    try {
        InputStream is = selectedFile.getContents(false);
        ObjectInputStream ois = new ObjectInputStream(is);
        setContents(ois.readObject());
        ois.close();
    } catch (Exception e) {
        util.Logger.singleton().error(e);
    }

}

From source file:ar.com.tadp.xml.rinzo.core.outline.XMLOutlinePage.java

License:Open Source License

protected void handleDoubleClick(DoubleClickEvent event) {
    IStructuredSelection selection = (IStructuredSelection) event.getSelection();
    Object element = selection.getFirstElement();
    TreeViewer viewer = this.getTreeViewer();
    if (viewer.isExpandable(element)) {
        viewer.setExpandedState(element, !viewer.getExpandedState(element));
    }/*from ww  w. j av a2s.com*/
}

From source file:ar.com.tadp.xml.rinzo.core.RinzoXMLEditor.java

License:Open Source License

public void selectionChanged(SelectionChangedEvent event) {
    IStructuredSelection selection = (IStructuredSelection) event.getSelection();
    if (!selection.isEmpty()) {
        Object element = selection.getFirstElement();
        if (element != null && element instanceof XMLNode) {
            XMLNode node = (XMLNode) element;
            this.selectAndReveal(node.getSelectionOffset(), node.getSelectionLength());
        }/*  w  w w  . j  a  v a2  s  .c  o  m*/
    }
}