Java Code Examples for org.eclipse.jface.viewers.TreeSelection#getFirstElement()

/**
 * fillContextMenu
 * 
 * @param manager
 */
private void fillContextMenu(IMenuManager manager)
{
	ISelection selection = treeViewer.getSelection();

	if (selection instanceof TreeSelection)
	{
		TreeSelection treeSelection = (TreeSelection) selection;
		Object item = treeSelection.getFirstElement();

		if (item instanceof BaseNode)
		{
			BaseNode<?> node = (BaseNode<?>) item;
			Action[] actions = node.getActions();

			if (actions != null)
			{
				for (Action action : actions)
				{
					manager.add(action);
				}
			}
		}
	}
}
 

/**
 * fillContextMenu
 * 
 * @param manager
 */
private void fillContextMenu(IMenuManager manager)
{
	ISelection selection = treeViewer.getSelection();

	if (selection instanceof TreeSelection)
	{
		TreeSelection treeSelection = (TreeSelection) selection;
		Object item = treeSelection.getFirstElement();

		if (item != null)
		{
			IAction[] actions = actionProvider.getActions(this, item);

			if (actions != null)
			{
				for (IAction action : actions)
				{
					manager.add(action);
				}
			}
		}
	}
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	ISelection selection = HandlerUtil.getActiveWorkbenchWindow(event)
            .getActivePage().getSelection();
	if(selection instanceof TreeSelection) {
		TreeSelection treeSelection = (TreeSelection) selection;
		if(treeSelection.getFirstElement() instanceof File) {
			File file = (File) treeSelection.getFirstElement();
			if(file.getFileExtension().equals("bib")){
				WorkspaceBibTexEntry entry = wm.getWorkspaceBibTexEntryByUri(file.getLocationURI());
				if(entry != null) {
					if(entry.getMendeleyFolder() != null) {
						// by setting the MendeleyFolder of a WorkspaceBibTexEntry to null, the connection will be removed
						entry.setMendeleyFolder(null);
						decoratorManager.update("de.tudresden.slr.model.mendeley.decorators.MendeleyOverlayDecorator");
					}
				}
			}
		}
	}
	return null;
}
 

@Override
public void selectionChanged(IAction action, ISelection selection) {
	if (selection instanceof TreeSelection) {
		TreeSelection treeSelection = (TreeSelection) selection;
		if (treeSelection.getFirstElement() instanceof IProject) {
			IProject project = (IProject) treeSelection.getFirstElement();
			action.setEnabled(project.isOpen());
			this.project = project;
			mavenProjectFile = project.getFile("pom.xml");
			if (mavenProjectFile.exists()) {
				action.setText("Upgrade Plugin Versions in pom.xml");
			}
		} else {
			action.setEnabled(false);
		}
	}

}
 

public void selectionChanged(IAction arg0, ISelection arg1) {
	if (arg1 instanceof TreeSelection) {
		TreeSelection treeSelection = (TreeSelection) arg1;
		if (treeSelection.getFirstElement() instanceof IProject) {
			IProject project = (IProject) treeSelection.getFirstElement();
			arg0.setEnabled(project.isOpen());
			this.project = project;
			mavenProjectFile = project.getFile("pom.xml");
			if (mavenProjectFile.exists()) {
				arg0.setText("Sync Project Dependencies with pom.xml");
			}
		} else {
			arg0.setEnabled(false);
		}
	}
}
 

/**
 * Refresh the selected project elements. This is useful after XML files
 * importing/deletion/enabling/disabling.
 *
 * @param elements
 *            the elements to re-open
 */
private static void refreshProject(Collection<TmfCommonProjectElement> elements) {
    // Check if we are closing down
    IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return;
    }

    // Get the selection
    IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return;
    }
    ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return;
    }
    ISelection selection = selectionProvider.getSelection();

    if (selection instanceof TreeSelection) {
        TreeSelection sel = (TreeSelection) selection;
        // There should be only one item selected as per the plugin.xml
        Object element = sel.getFirstElement();
        if (element instanceof TmfProjectModelElement) {
            ((TmfProjectModelElement) element).getProject().refresh();
        }
    }

    // Re-open given elements
    elements.forEach(TmfOpenTraceHelper::openFromElement);
}
 

@Override
public boolean isEnabled() {

    // Check if we are closing down
    IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return false;
    }

    // Get the selection
    IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return false;
    }
    ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return false;
    }
    ISelection selection = selectionProvider.getSelection();

    // Make sure there is only selection and that it is an experiment
    fExperiment = null;
    if (selection instanceof TreeSelection) {
        TreeSelection sel = (TreeSelection) selection;
        Object element = sel.getFirstElement();
        if (element instanceof TmfExperimentElement) {
            fExperiment = (TmfExperimentElement) element;
        }
    }

    return (fExperiment != null);
}
 

@Override
public boolean isEnabled() {
    /* Check if we are closing down */
    final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return false;
    }

    /* Get the selection */
    final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    final IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return false;
    }
    final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return false;
    }
    final ISelection selection = selectionProvider.getSelection();

    /* Make sure there is only one selection and that it is an analysis output */
    fAnalysisElement = null;
    if (selection instanceof TreeSelection) {
        final TreeSelection sel = (TreeSelection) selection;
        // There should be only one item selected as per the plugin.xml
        final Object element = sel.getFirstElement();
        if (element instanceof TmfAnalysisElement) {
            fAnalysisElement = (TmfAnalysisElement) element;
        }
    }

    return (fAnalysisElement != null);
}
 

@Override
public boolean isEnabled() {

    // Check if we are closing down
    final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return false;
    }

    // Get the selection
    final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    final IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return false;
    }
    final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return false;
    }
    final ISelection selection = selectionProvider.getSelection();

    // Make sure there is only one selection and that it is an experiment
    fExperiment = null;
    if (selection instanceof TreeSelection) {
        final TreeSelection sel = (TreeSelection) selection;
        // There should be only one item selected as per the plugin.xml
        final Object element = sel.getFirstElement();
        if (element instanceof TmfExperimentElement) {
            fExperiment = (TmfExperimentElement) element;
        }
    }

    // We only enable opening from the Traces folder for now
    return ((fExperiment != null) && (!fExperiment.getTraces().isEmpty()));
}
 

@Override
public boolean isEnabled() {
    /* Check if we are closing down */
    final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return false;
    }

    /* Get the selection */
    final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    final IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return false;
    }
    final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return false;
    }
    final ISelection selection = selectionProvider.getSelection();

    /* Make sure there is only one selection and that it is an analysis output */
    fOutputElement = null;
    if (selection instanceof TreeSelection) {
        final TreeSelection sel = (TreeSelection) selection;
        // There should be only one item selected as per the plugin.xml
        final Object element = sel.getFirstElement();
        if (element instanceof TmfAnalysisOutputElement) {
            fOutputElement = (TmfAnalysisOutputElement) element;
        }
    }

    return (fOutputElement != null);
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {

    // Check if we are closing down
    IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return null;
    }

    // Get the selection
    IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return Boolean.FALSE;
    }
    ISelection selection = part.getSite().getSelectionProvider().getSelection();
    TmfExperimentFolder experimentFolder = null;
    if (selection instanceof TreeSelection) {
        TreeSelection sel = (TreeSelection) selection;
        Object element = sel.getFirstElement();
        if (element instanceof TmfExperimentFolder) {
            experimentFolder = (TmfExperimentFolder) element;
        }
    }
    if (experimentFolder == null) {
        return null;
    }

    // Fire the New Experiment dialog
    Shell shell = window.getShell();
    NewExperimentDialog dialog = new NewExperimentDialog(shell, experimentFolder);
    dialog.open();

    return null;
}
 

@Override
public boolean isEnabled() {
    // Check if we are closing down
    final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return false;
    }

    // Get the selection
    final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    final IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return false;
    }
    final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return false;
    }
    final ISelection selection = selectionProvider.getSelection();

    // Make sure there is only one selection and that it is a trace
    fAnalysis = null;
    if (selection instanceof TreeSelection) {
        final TreeSelection sel = (TreeSelection) selection;
        // There should be only one item selected as per the plugin.xml
        final Object element = sel.getFirstElement();
        if (element instanceof TmfAnalysisElement) {
            fAnalysis = (TmfAnalysisElement) element;
        }
    }

    return (fAnalysis != null);
}
 

@Override
public boolean isEnabled() {

    // Check if we are closing down
    final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return false;
    }

    // Get the selection
    final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    final IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return false;
    }
    final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return false;
    }
    final ISelection selection = selectionProvider.getSelection();

    // Make sure there is only one selection and that it is a trace
    fTrace = null;
    if (selection instanceof TreeSelection) {
        final TreeSelection sel = (TreeSelection) selection;
        // There should be only one item selected as per the plugin.xml
        final Object element = sel.getFirstElement();
        if (element instanceof TmfTraceElement) {
            fTrace = (TmfTraceElement) element;
        }
    }

    // We only enable opening from the Traces folder for now
    return (fTrace != null);
}
 

@Override
public boolean isEnabled() {

    // Check if we are closing down
    IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return false;
    }

    // Get the selection
    IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return false;
    }
    ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return false;
    }
    ISelection selection = selectionProvider.getSelection();

    // Make sure there is only one selection and that it is an experiment
    fExperiment = null;
    if (selection instanceof TreeSelection) {
        TreeSelection sel = (TreeSelection) selection;
        // There should be only one item selected as per the plugin.xml
        Object element = sel.getFirstElement();
        if (element instanceof TmfExperimentElement) {
            fExperiment = (TmfExperimentElement) element;
        }
    }

    return (fExperiment != null);
}
 

/**
 * Get the current selected UI element. Can be used instead of
 * {@link org.eclipse.ui.handlers.HandlerUtil#getCurrentSelection} when an
 * ExecutionEvent is not available.
 *
 * @return The element consisting of the selection
 */
public static @Nullable Object getSelectedModelElement() {
    // Check if we are closing down
    final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    if (window == null) {
        return null;
    }

    // Get the selection
    final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
    final IWorkbenchPart part = page.getActivePart();
    if (part == null) {
        return null;
    }
    final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
    if (selectionProvider == null) {
        return null;
    }
    final ISelection selection = selectionProvider.getSelection();

    if (selection instanceof TreeSelection) {
        final TreeSelection sel = (TreeSelection) selection;
        // There should be only one item selected as per the plugin.xml
        return sel.getFirstElement();
    }

    return null;
}