org.eclipse.osbp.infogrid.model.editor/src/org/eclipse/osbp/infogrid/model/gridsource/presentation/CxGridSourceActionBarContributor.java - osbp/org.eclipse.osbp.infogrid - Git at Google

 /**
  *
  * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
  */
  package org.eclipse.osbp.infogrid.model.gridsource.presentation;

 import java.util.ArrayList;
 import java.util.Collection;

 import org.eclipse.emf.common.ui.viewer.IViewerProvider;

 import org.eclipse.emf.edit.domain.EditingDomain;
 import org.eclipse.emf.edit.domain.IEditingDomainProvider;

 import org.eclipse.emf.edit.ui.action.ControlAction;
 import org.eclipse.emf.edit.ui.action.CreateChildAction;
 import org.eclipse.emf.edit.ui.action.CreateSiblingAction;
 import org.eclipse.emf.edit.ui.action.EditingDomainActionBarContributor;
 import org.eclipse.emf.edit.ui.action.LoadResourceAction;
 import org.eclipse.emf.edit.ui.action.ValidateAction;

 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.action.ActionContributionItem;
 import org.eclipse.jface.action.IAction;
 import org.eclipse.jface.action.IContributionItem;
 import org.eclipse.jface.action.IContributionManager;
 import org.eclipse.jface.action.IMenuListener;
 import org.eclipse.jface.action.IMenuManager;
 import org.eclipse.jface.action.IToolBarManager;
 import org.eclipse.jface.action.MenuManager;
 import org.eclipse.jface.action.Separator;
 import org.eclipse.jface.action.SubContributionItem;

 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.ISelectionProvider;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.Viewer;

 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.PartInitException;

 /**
  * This is the action bar contributor for the CxGridSource model editor.
  * <!-- begin-user-doc -->
  * <!-- end-user-doc -->
  * @generated
  */
 public class CxGridSourceActionBarContributor
 	extends EditingDomainActionBarContributor
 	implements ISelectionChangedListener {
 	/**
 	 * This keeps track of the active editor.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected IEditorPart activeEditorPart;

 	/**
 	 * This keeps track of the current selection provider.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected ISelectionProvider selectionProvider;

 	/**
 	 * This action opens the Properties view.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected IAction showPropertiesViewAction =
 		new Action(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_ShowPropertiesView_menu_item")) {
 			@Override
 			public void run() {
 				try {
 					getPage().showView("org.eclipse.ui.views.PropertySheet");
 				}
 				catch (PartInitException exception) {
 					CxGridSourceEditorPlugin.INSTANCE.log(exception);
 				}
 			}
 		};

 	/**
 	 * This action refreshes the viewer of the current editor if the editor
 	 * implements {@link org.eclipse.emf.common.ui.viewer.IViewerProvider}.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected IAction refreshViewerAction =
 		new Action(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_RefreshViewer_menu_item")) {
 			@Override
 			public boolean isEnabled() {
 				return activeEditorPart instanceof IViewerProvider;
 			}

 			@Override
 			public void run() {
 				if (activeEditorPart instanceof IViewerProvider) {
 					Viewer viewer = ((IViewerProvider)activeEditorPart).getViewer();
 					if (viewer != null) {
 						viewer.refresh();
 					}
 				}
 			}
 		};

 	/**
 	 * This will contain one {@link org.eclipse.emf.edit.ui.action.CreateChildAction} corresponding to each descriptor
 	 * generated for the current selection by the item provider.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected Collection<IAction> createChildActions;

 	/**
 	 * This is the menu manager into which menu contribution items should be added for CreateChild actions.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected IMenuManager createChildMenuManager;

 	/**
 	 * This will contain one {@link org.eclipse.emf.edit.ui.action.CreateSiblingAction} corresponding to each descriptor
 	 * generated for the current selection by the item provider.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected Collection<IAction> createSiblingActions;

 	/**
 	 * This is the menu manager into which menu contribution items should be added for CreateSibling actions.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected IMenuManager createSiblingMenuManager;

 	/**
 	 * This creates an instance of the contributor.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public CxGridSourceActionBarContributor() {
 		super(ADDITIONS_LAST_STYLE);
 		loadResourceAction = new LoadResourceAction();
 		validateAction = new ValidateAction();
 		controlAction = new ControlAction();
 	}

 	/**
 	 * This adds Separators for editor additions to the tool bar.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public void contributeToToolBar(IToolBarManager toolBarManager) {
 		toolBarManager.add(new Separator("cxgridsource-settings"));
 		toolBarManager.add(new Separator("cxgridsource-additions"));
 	}

 	/**
 	 * This adds to the menu bar a menu and some separators for editor additions,
 	 * as well as the sub-menus for object creation items.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public void contributeToMenu(IMenuManager menuManager) {
 		super.contributeToMenu(menuManager);

 		IMenuManager submenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CxGridSourceEditor_menu"), "org.eclipse.osbp.infogrid.model.gridsourceMenuID");
 		menuManager.insertAfter("additions", submenuManager);
 		submenuManager.add(new Separator("settings"));
 		submenuManager.add(new Separator("actions"));
 		submenuManager.add(new Separator("additions"));
 		submenuManager.add(new Separator("additions-end"));

 		// Prepare for CreateChild item addition or removal.
 		//
 		createChildMenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
 		submenuManager.insertBefore("additions", createChildMenuManager);

 		// Prepare for CreateSibling item addition or removal.
 		//
 		createSiblingMenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CreateSibling_menu_item"));
 		submenuManager.insertBefore("additions", createSiblingMenuManager);

 		// Force an update because Eclipse hides empty menus now.
 		//
 		submenuManager.addMenuListener
 			(new IMenuListener() {
 				 public void menuAboutToShow(IMenuManager menuManager) {
 					 menuManager.updateAll(true);
 				 }
 			 });

 		addGlobalActions(submenuManager);
 	}

 	/**
 	 * When the active editor changes, this remembers the change and registers with it as a selection provider.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public void setActiveEditor(IEditorPart part) {
 		super.setActiveEditor(part);
 		activeEditorPart = part;

 		// Switch to the new selection provider.
 		//
 		if (selectionProvider != null) {
 			selectionProvider.removeSelectionChangedListener(this);
 		}
 		if (part == null) {
 			selectionProvider = null;
 		}
 		else {
 			selectionProvider = part.getSite().getSelectionProvider();
 			selectionProvider.addSelectionChangedListener(this);

 			// Fake a selection changed event to update the menus.
 			//
 			if (selectionProvider.getSelection() != null) {
 				selectionChanged(new SelectionChangedEvent(selectionProvider, selectionProvider.getSelection()));
 			}
 		}
 	}

 	/**
 	 * This implements {@link org.eclipse.jface.viewers.ISelectionChangedListener},
 	 * handling {@link org.eclipse.jface.viewers.SelectionChangedEvent}s by querying for the children and siblings
 	 * that can be added to the selected object and updating the menus accordingly.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void selectionChanged(SelectionChangedEvent event) {
 		// Remove any menu items for old selection.
 		//
 		if (createChildMenuManager != null) {
 			depopulateManager(createChildMenuManager, createChildActions);
 		}
 		if (createSiblingMenuManager != null) {
 			depopulateManager(createSiblingMenuManager, createSiblingActions);
 		}

 		// Query the new selection for appropriate new child/sibling descriptors
 		//
 		Collection<?> newChildDescriptors = null;
 		Collection<?> newSiblingDescriptors = null;

 		ISelection selection = event.getSelection();
 		if (selection instanceof IStructuredSelection && ((IStructuredSelection)selection).size() == 1) {
 			Object object = ((IStructuredSelection)selection).getFirstElement();

 			EditingDomain domain = ((IEditingDomainProvider)activeEditorPart).getEditingDomain();

 			newChildDescriptors = domain.getNewChildDescriptors(object, null);
 			newSiblingDescriptors = domain.getNewChildDescriptors(null, object);
 		}

 		// Generate actions for selection; populate and redraw the menus.
 		//
 		createChildActions = generateCreateChildActions(newChildDescriptors, selection);
 		createSiblingActions = generateCreateSiblingActions(newSiblingDescriptors, selection);

 		if (createChildMenuManager != null) {
 			populateManager(createChildMenuManager, createChildActions, null);
 			createChildMenuManager.update(true);
 		}
 		if (createSiblingMenuManager != null) {
 			populateManager(createSiblingMenuManager, createSiblingActions, null);
 			createSiblingMenuManager.update(true);
 		}
 	}

 	/**
 	 * This generates a {@link org.eclipse.emf.edit.ui.action.CreateChildAction} for each object in <code>descriptors</code>,
 	 * and returns the collection of these actions.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected Collection<IAction> generateCreateChildActions(Collection<?> descriptors, ISelection selection) {
 		Collection<IAction> actions = new ArrayList<IAction>();
 		if (descriptors != null) {
 			for (Object descriptor : descriptors) {
 				actions.add(new CreateChildAction(activeEditorPart, selection, descriptor));
 			}
 		}
 		return actions;
 	}

 	/**
 	 * This generates a {@link org.eclipse.emf.edit.ui.action.CreateSiblingAction} for each object in <code>descriptors</code>,
 	 * and returns the collection of these actions.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected Collection<IAction> generateCreateSiblingActions(Collection<?> descriptors, ISelection selection) {
 		Collection<IAction> actions = new ArrayList<IAction>();
 		if (descriptors != null) {
 			for (Object descriptor : descriptors) {
 				actions.add(new CreateSiblingAction(activeEditorPart, selection, descriptor));
 			}
 		}
 		return actions;
 	}

 	/**
 	 * This populates the specified <code>manager</code> with {@link org.eclipse.jface.action.ActionContributionItem}s
 	 * based on the {@link org.eclipse.jface.action.IAction}s contained in the <code>actions</code> collection,
 	 * by inserting them before the specified contribution item <code>contributionID</code>.
 	 * If <code>contributionID</code> is <code>null</code>, they are simply added.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected void populateManager(IContributionManager manager, Collection<? extends IAction> actions, String contributionID) {
 		if (actions != null) {
 			for (IAction action : actions) {
 				if (contributionID != null) {
 					manager.insertBefore(contributionID, action);
 				}
 				else {
 					manager.add(action);
 				}
 			}
 		}
 	}

 	/**
 	 * This removes from the specified <code>manager</code> all {@link org.eclipse.jface.action.ActionContributionItem}s
 	 * based on the {@link org.eclipse.jface.action.IAction}s contained in the <code>actions</code> collection.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	protected void depopulateManager(IContributionManager manager, Collection<? extends IAction> actions) {
 		if (actions != null) {
 			IContributionItem[] items = manager.getItems();
 			for (int i = 0; i < items.length; i++) {
 				// Look into SubContributionItems
 				//
 				IContributionItem contributionItem = items[i];
 				while (contributionItem instanceof SubContributionItem) {
 					contributionItem = ((SubContributionItem)contributionItem).getInnerItem();
 				}

 				// Delete the ActionContributionItems with matching action.
 				//
 				if (contributionItem instanceof ActionContributionItem) {
 					IAction action = ((ActionContributionItem)contributionItem).getAction();
 					if (actions.contains(action)) {
 						manager.remove(contributionItem);
 					}
 				}
 			}
 		}
 	}

 	/**
 	 * This populates the pop-up menu before it appears.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public void menuAboutToShow(IMenuManager menuManager) {
 		super.menuAboutToShow(menuManager);
 		MenuManager submenuManager = null;

 		submenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
 		populateManager(submenuManager, createChildActions, null);
 		menuManager.insertBefore("edit", submenuManager);

 		submenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CreateSibling_menu_item"));
 		populateManager(submenuManager, createSiblingActions, null);
 		menuManager.insertBefore("edit", submenuManager);
 	}

 	/**
 	 * This inserts global actions before the "additions-end" separator.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	protected void addGlobalActions(IMenuManager menuManager) {
 		menuManager.insertAfter("additions-end", new Separator("ui-actions"));
 		menuManager.insertAfter("ui-actions", showPropertiesViewAction);

 		refreshViewerAction.setEnabled(refreshViewerAction.isEnabled());
 		menuManager.insertAfter("ui-actions", refreshViewerAction);

 		super.addGlobalActions(menuManager);
 	}

 	/**
 	 * This ensures that a delete action will clean up all references to deleted objects.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	protected boolean removeAllReferencesOnDelete() {
 		return true;
 	}

 }
	/**
	*
	* Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
	*
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
	*/
	package org.eclipse.osbp.infogrid.model.gridsource.presentation;

	import java.util.ArrayList;
	import java.util.Collection;

	import org.eclipse.emf.common.ui.viewer.IViewerProvider;

	import org.eclipse.emf.edit.domain.EditingDomain;
	import org.eclipse.emf.edit.domain.IEditingDomainProvider;

	import org.eclipse.emf.edit.ui.action.ControlAction;
	import org.eclipse.emf.edit.ui.action.CreateChildAction;
	import org.eclipse.emf.edit.ui.action.CreateSiblingAction;
	import org.eclipse.emf.edit.ui.action.EditingDomainActionBarContributor;
	import org.eclipse.emf.edit.ui.action.LoadResourceAction;
	import org.eclipse.emf.edit.ui.action.ValidateAction;

	import org.eclipse.jface.action.Action;
	import org.eclipse.jface.action.ActionContributionItem;
	import org.eclipse.jface.action.IAction;
	import org.eclipse.jface.action.IContributionItem;
	import org.eclipse.jface.action.IContributionManager;
	import org.eclipse.jface.action.IMenuListener;
	import org.eclipse.jface.action.IMenuManager;
	import org.eclipse.jface.action.IToolBarManager;
	import org.eclipse.jface.action.MenuManager;
	import org.eclipse.jface.action.Separator;
	import org.eclipse.jface.action.SubContributionItem;

	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.ISelectionProvider;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.Viewer;

	import org.eclipse.ui.IEditorPart;
	import org.eclipse.ui.PartInitException;

	/**
	* This is the action bar contributor for the CxGridSource model editor.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public class CxGridSourceActionBarContributor
	extends EditingDomainActionBarContributor
	implements ISelectionChangedListener {
	/**
	* This keeps track of the active editor.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected IEditorPart activeEditorPart;

	/**
	* This keeps track of the current selection provider.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected ISelectionProvider selectionProvider;

	/**
	* This action opens the Properties view.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected IAction showPropertiesViewAction =
	new Action(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_ShowPropertiesView_menu_item")) {
	@Override
	public void run() {
	try {
	getPage().showView("org.eclipse.ui.views.PropertySheet");
	}
	catch (PartInitException exception) {
	CxGridSourceEditorPlugin.INSTANCE.log(exception);
	}
	}
	};

	/**
	* This action refreshes the viewer of the current editor if the editor
	* implements {@link org.eclipse.emf.common.ui.viewer.IViewerProvider}.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected IAction refreshViewerAction =
	new Action(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_RefreshViewer_menu_item")) {
	@Override
	public boolean isEnabled() {
	return activeEditorPart instanceof IViewerProvider;
	}

	@Override
	public void run() {
	if (activeEditorPart instanceof IViewerProvider) {
	Viewer viewer = ((IViewerProvider)activeEditorPart).getViewer();
	if (viewer != null) {
	viewer.refresh();
	}
	}
	}
	};

	/**
	* This will contain one {@link org.eclipse.emf.edit.ui.action.CreateChildAction} corresponding to each descriptor
	* generated for the current selection by the item provider.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected Collection<IAction> createChildActions;

	/**
	* This is the menu manager into which menu contribution items should be added for CreateChild actions.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected IMenuManager createChildMenuManager;

	/**
	* This will contain one {@link org.eclipse.emf.edit.ui.action.CreateSiblingAction} corresponding to each descriptor
	* generated for the current selection by the item provider.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected Collection<IAction> createSiblingActions;

	/**
	* This is the menu manager into which menu contribution items should be added for CreateSibling actions.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected IMenuManager createSiblingMenuManager;

	/**
	* This creates an instance of the contributor.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public CxGridSourceActionBarContributor() {
	super(ADDITIONS_LAST_STYLE);
	loadResourceAction = new LoadResourceAction();
	validateAction = new ValidateAction();
	controlAction = new ControlAction();
	}

	/**
	* This adds Separators for editor additions to the tool bar.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public void contributeToToolBar(IToolBarManager toolBarManager) {
	toolBarManager.add(new Separator("cxgridsource-settings"));
	toolBarManager.add(new Separator("cxgridsource-additions"));
	}

	/**
	* This adds to the menu bar a menu and some separators for editor additions,
	* as well as the sub-menus for object creation items.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public void contributeToMenu(IMenuManager menuManager) {
	super.contributeToMenu(menuManager);

	IMenuManager submenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CxGridSourceEditor_menu"), "org.eclipse.osbp.infogrid.model.gridsourceMenuID");
	menuManager.insertAfter("additions", submenuManager);
	submenuManager.add(new Separator("settings"));
	submenuManager.add(new Separator("actions"));
	submenuManager.add(new Separator("additions"));
	submenuManager.add(new Separator("additions-end"));

	// Prepare for CreateChild item addition or removal.
	//
	createChildMenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
	submenuManager.insertBefore("additions", createChildMenuManager);

	// Prepare for CreateSibling item addition or removal.
	//
	createSiblingMenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CreateSibling_menu_item"));
	submenuManager.insertBefore("additions", createSiblingMenuManager);

	// Force an update because Eclipse hides empty menus now.
	//
	submenuManager.addMenuListener
	(new IMenuListener() {
	public void menuAboutToShow(IMenuManager menuManager) {
	menuManager.updateAll(true);
	}
	});

	addGlobalActions(submenuManager);
	}

	/**
	* When the active editor changes, this remembers the change and registers with it as a selection provider.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public void setActiveEditor(IEditorPart part) {
	super.setActiveEditor(part);
	activeEditorPart = part;

	// Switch to the new selection provider.
	//
	if (selectionProvider != null) {
	selectionProvider.removeSelectionChangedListener(this);
	}
	if (part == null) {
	selectionProvider = null;
	}
	else {
	selectionProvider = part.getSite().getSelectionProvider();
	selectionProvider.addSelectionChangedListener(this);

	// Fake a selection changed event to update the menus.
	//
	if (selectionProvider.getSelection() != null) {
	selectionChanged(new SelectionChangedEvent(selectionProvider, selectionProvider.getSelection()));
	}
	}
	}

	/**
	* This implements {@link org.eclipse.jface.viewers.ISelectionChangedListener},
	* handling {@link org.eclipse.jface.viewers.SelectionChangedEvent}s by querying for the children and siblings
	* that can be added to the selected object and updating the menus accordingly.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public void selectionChanged(SelectionChangedEvent event) {
	// Remove any menu items for old selection.
	//
	if (createChildMenuManager != null) {
	depopulateManager(createChildMenuManager, createChildActions);
	}
	if (createSiblingMenuManager != null) {
	depopulateManager(createSiblingMenuManager, createSiblingActions);
	}

	// Query the new selection for appropriate new child/sibling descriptors
	//
	Collection<?> newChildDescriptors = null;
	Collection<?> newSiblingDescriptors = null;

	ISelection selection = event.getSelection();
	if (selection instanceof IStructuredSelection && ((IStructuredSelection)selection).size() == 1) {
	Object object = ((IStructuredSelection)selection).getFirstElement();

	EditingDomain domain = ((IEditingDomainProvider)activeEditorPart).getEditingDomain();

	newChildDescriptors = domain.getNewChildDescriptors(object, null);
	newSiblingDescriptors = domain.getNewChildDescriptors(null, object);
	}

	// Generate actions for selection; populate and redraw the menus.
	//
	createChildActions = generateCreateChildActions(newChildDescriptors, selection);
	createSiblingActions = generateCreateSiblingActions(newSiblingDescriptors, selection);

	if (createChildMenuManager != null) {
	populateManager(createChildMenuManager, createChildActions, null);
	createChildMenuManager.update(true);
	}
	if (createSiblingMenuManager != null) {
	populateManager(createSiblingMenuManager, createSiblingActions, null);
	createSiblingMenuManager.update(true);
	}
	}

	/**
	* This generates a {@link org.eclipse.emf.edit.ui.action.CreateChildAction} for each object in <code>descriptors</code>,
	* and returns the collection of these actions.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected Collection<IAction> generateCreateChildActions(Collection<?> descriptors, ISelection selection) {
	Collection<IAction> actions = new ArrayList<IAction>();
	if (descriptors != null) {
	for (Object descriptor : descriptors) {
	actions.add(new CreateChildAction(activeEditorPart, selection, descriptor));
	}
	}
	return actions;
	}

	/**
	* This generates a {@link org.eclipse.emf.edit.ui.action.CreateSiblingAction} for each object in <code>descriptors</code>,
	* and returns the collection of these actions.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected Collection<IAction> generateCreateSiblingActions(Collection<?> descriptors, ISelection selection) {
	Collection<IAction> actions = new ArrayList<IAction>();
	if (descriptors != null) {
	for (Object descriptor : descriptors) {
	actions.add(new CreateSiblingAction(activeEditorPart, selection, descriptor));
	}
	}
	return actions;
	}

	/**
	* This populates the specified <code>manager</code> with {@link org.eclipse.jface.action.ActionContributionItem}s
	* based on the {@link org.eclipse.jface.action.IAction}s contained in the <code>actions</code> collection,
	* by inserting them before the specified contribution item <code>contributionID</code>.
	* If <code>contributionID</code> is <code>null</code>, they are simply added.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected void populateManager(IContributionManager manager, Collection<? extends IAction> actions, String contributionID) {
	if (actions != null) {
	for (IAction action : actions) {
	if (contributionID != null) {
	manager.insertBefore(contributionID, action);
	}
	else {
	manager.add(action);
	}
	}
	}
	}

	/**
	* This removes from the specified <code>manager</code> all {@link org.eclipse.jface.action.ActionContributionItem}s
	* based on the {@link org.eclipse.jface.action.IAction}s contained in the <code>actions</code> collection.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	protected void depopulateManager(IContributionManager manager, Collection<? extends IAction> actions) {
	if (actions != null) {
	IContributionItem[] items = manager.getItems();
	for (int i = 0; i < items.length; i++) {
	// Look into SubContributionItems
	//
	IContributionItem contributionItem = items[i];
	while (contributionItem instanceof SubContributionItem) {
	contributionItem = ((SubContributionItem)contributionItem).getInnerItem();
	}

	// Delete the ActionContributionItems with matching action.
	//
	if (contributionItem instanceof ActionContributionItem) {
	IAction action = ((ActionContributionItem)contributionItem).getAction();
	if (actions.contains(action)) {
	manager.remove(contributionItem);
	}
	}
	}
	}
	}

	/**
	* This populates the pop-up menu before it appears.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public void menuAboutToShow(IMenuManager menuManager) {
	super.menuAboutToShow(menuManager);
	MenuManager submenuManager = null;

	submenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
	populateManager(submenuManager, createChildActions, null);
	menuManager.insertBefore("edit", submenuManager);

	submenuManager = new MenuManager(CxGridSourceEditorPlugin.INSTANCE.getString("_UI_CreateSibling_menu_item"));
	populateManager(submenuManager, createSiblingActions, null);
	menuManager.insertBefore("edit", submenuManager);
	}

	/**
	* This inserts global actions before the "additions-end" separator.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	protected void addGlobalActions(IMenuManager menuManager) {
	menuManager.insertAfter("additions-end", new Separator("ui-actions"));
	menuManager.insertAfter("ui-actions", showPropertiesViewAction);

	refreshViewerAction.setEnabled(refreshViewerAction.isEnabled());
	menuManager.insertAfter("ui-actions", refreshViewerAction);

	super.addGlobalActions(menuManager);
	}

	/**
	* This ensures that a delete action will clean up all references to deleted objects.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	protected boolean removeAllReferencesOnDelete() {
	return true;
	}

	}