diagram-definition/plugins/org.eclipse.papyrus.dd.editor/src-gen/org/eclipse/papyrus/dd/dg/presentation/DGActionBarContributor.java - papyrus/org.eclipse.papyrus-interoperability - Git at Google

 /**
  * Copyright (c) 2014 CEA LIST.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *  CEA LIST - Initial API and implementation
  */
 package org.eclipse.papyrus.dd.dg.presentation;

 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.StringTokenizer;

 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.papyrus.dd.presentation.DDEditorPlugin;
 import org.eclipse.papyrus.dd.presentation.DDModelPage;
 import org.eclipse.ui.IActionBars;
 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.PartInitException;
 import org.eclipse.ui.actions.ActionFactory;

 /**
  * This is the action bar contributor for the DG model editor.
  * <!-- begin-user-doc -->
  * <!-- end-user-doc -->
  *
  * @generated
  */
 public class DGActionBarContributor 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(DDEditorPlugin.INSTANCE.getString("_UI_ShowPropertiesView_menu_item")) {

 		@Override
 		public void run() {
 			try {
 				getPage().showView("org.eclipse.ui.views.PropertySheet");
 			} catch (PartInitException exception) {
 				DDEditorPlugin.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(DDEditorPlugin.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 will contain a map of {@link org.eclipse.emf.edit.ui.action.CreateChildAction}s, keyed by sub-menu text.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	protected Map<String, Collection<IAction>> createChildSubmenuActions;

 	/**
 	 * 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 will contain a map of {@link org.eclipse.emf.edit.ui.action.CreateSiblingAction}s, keyed by submenu text.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	protected Map<String, Collection<IAction>> createSiblingSubmenuActions;

 	/**
 	 * 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 DGActionBarContributor() {
 		super(ADDITIONS_LAST_STYLE);
 		loadResourceAction = new LoadResourceAction();
 		validateAction = new ValidateAction();
 		controlAction = new ControlAction();
 	}

 	/**
 	 * Override to handle the global actions for the model page only Otherwise,
 	 * other controls (e.g., StyledText) are not handled property
 	 */
 	@Override
 	public void setActivePage(IEditorPart part) {
 		IActionBars actionBars = getActionBars();
 		if(part instanceof DDModelPage) {
 			actionBars.setGlobalActionHandler(ActionFactory.DELETE.getId(), deleteAction);
 			actionBars.setGlobalActionHandler(ActionFactory.CUT.getId(), cutAction);
 			actionBars.setGlobalActionHandler(ActionFactory.COPY.getId(), copyAction);
 			actionBars.setGlobalActionHandler(ActionFactory.PASTE.getId(), pasteAction);
 		} else {
 			actionBars.setGlobalActionHandler(ActionFactory.DELETE.getId(), null);
 			actionBars.setGlobalActionHandler(ActionFactory.CUT.getId(), null);
 			actionBars.setGlobalActionHandler(ActionFactory.COPY.getId(), null);
 			actionBars.setGlobalActionHandler(ActionFactory.PASTE.getId(), null);
 		}
 	}

 	/**
 	 * 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("dg-settings"));
 		toolBarManager.add(new Separator("dg-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(DDEditorPlugin.INSTANCE.getString("_UI_DGEditor_menu"), "org.eclipse.papyrus.dd.dgMenuID");
 		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(DDEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
 		submenuManager.insertBefore("additions", createChildMenuManager);
 		// Prepare for CreateSibling item addition or removal.
 		//
 		createSiblingMenuManager = new MenuManager(DDEditorPlugin.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, createChildSubmenuActions);
 			depopulateManager(createChildMenuManager, createChildActions);
 		}
 		if(createSiblingMenuManager != null) {
 			depopulateManager(createSiblingMenuManager, createSiblingSubmenuActions);
 			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);
 		createChildSubmenuActions = extractSubmenuActions(createChildActions);
 		createSiblingActions = generateCreateSiblingActions(newSiblingDescriptors, selection);
 		createSiblingSubmenuActions = extractSubmenuActions(createSiblingActions);
 		if(createChildMenuManager != null) {
 			populateManager(createChildMenuManager, createChildSubmenuActions, null);
 			populateManager(createChildMenuManager, createChildActions, null);
 			createChildMenuManager.update(true);
 		}
 		if(createSiblingMenuManager != null) {
 			populateManager(createSiblingMenuManager, createSiblingSubmenuActions, 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 extracts those actions in the <code>submenuActions</code> collection whose text is qualified and returns
 	 * a map of these actions, keyed by submenu text.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	protected Map<String, Collection<IAction>> extractSubmenuActions(Collection<IAction> createActions) {
 		Map<String, Collection<IAction>> createSubmenuActions = new LinkedHashMap<String, Collection<IAction>>();
 		if(createActions != null) {
 			for(Iterator<IAction> actions = createActions.iterator(); actions.hasNext();) {
 				IAction action = actions.next();
 				StringTokenizer st = new StringTokenizer(action.getText(), "|");
 				if(st.countTokens() == 2) {
 					String text = st.nextToken().trim();
 					Collection<IAction> submenuActions = createSubmenuActions.get(text);
 					if(submenuActions == null) {
 						createSubmenuActions.put(text, submenuActions = new ArrayList<IAction>());
 					}
 					action.setText(st.nextToken().trim());
 					submenuActions.add(action);
 					actions.remove();
 				}
 			}
 		}
 		return createSubmenuActions;
 	}

 	/**
 	 * This populates the specified <code>manager</code> with {@link org.eclipse.jface.action.MenuManager}s containing
 	 * {@link org.eclipse.jface.action.ActionContributionItem}s based on the {@link org.eclipse.jface.action.IAction}s
 	 * contained in the <code>submenuActions</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, Map<String, Collection<IAction>> submenuActions, String contributionID) {
 		if(submenuActions != null) {
 			for(Map.Entry<String, Collection<IAction>> entry : submenuActions.entrySet()) {
 				MenuManager submenuManager = new MenuManager(entry.getKey());
 				if(contributionID != null) {
 					manager.insertBefore(contributionID, submenuManager);
 				} else {
 					manager.add(submenuManager);
 				}
 				populateManager(submenuManager, entry.getValue(), null);
 			}
 		}
 	}

 	/**
 	 * This removes from the specified <code>manager</code> all {@link org.eclipse.jface.action.MenuManager}s and their
 	 * {@link org.eclipse.jface.action.ActionContributionItem}s based on the {@link org.eclipse.jface.action.IAction}s
 	 * contained in the <code>submenuActions</code> map.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated NOT
 	 */
 	protected void depopulateManager(IContributionManager manager, Map<String, Collection<IAction>> submenuActions) {
 		if(submenuActions != null) {
 			IContributionItem[] items = manager.getItems();
 			for(int i = 0; i < items.length; i++) {
 				IContributionItem contributionItem = items[i];
 				if(contributionItem instanceof MenuManager) {
 					MenuManager submenuManager = (MenuManager)contributionItem;
 					if(submenuActions.containsKey(submenuManager.getMenuText())) {
 						depopulateManager(submenuManager, submenuActions.get(contributionItem.toString()));
 						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(DDEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
 		populateManager(submenuManager, createChildSubmenuActions, null);
 		populateManager(submenuManager, createChildActions, null);
 		menuManager.insertBefore("edit", submenuManager);
 		submenuManager = new MenuManager(DDEditorPlugin.INSTANCE.getString("_UI_CreateSibling_menu_item"));
 		populateManager(submenuManager, createSiblingSubmenuActions, null);
 		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) 2014 CEA LIST.
	*
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* CEA LIST - Initial API and implementation
	*/
	package org.eclipse.papyrus.dd.dg.presentation;

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Iterator;
	import java.util.LinkedHashMap;
	import java.util.Map;
	import java.util.StringTokenizer;

	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.papyrus.dd.presentation.DDEditorPlugin;
	import org.eclipse.papyrus.dd.presentation.DDModelPage;
	import org.eclipse.ui.IActionBars;
	import org.eclipse.ui.IEditorPart;
	import org.eclipse.ui.PartInitException;
	import org.eclipse.ui.actions.ActionFactory;

	/**
	* This is the action bar contributor for the DG model editor.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	public class DGActionBarContributor 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(DDEditorPlugin.INSTANCE.getString("_UI_ShowPropertiesView_menu_item")) {

	@Override
	public void run() {
	try {
	getPage().showView("org.eclipse.ui.views.PropertySheet");
	} catch (PartInitException exception) {
	DDEditorPlugin.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(DDEditorPlugin.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 will contain a map of {@link org.eclipse.emf.edit.ui.action.CreateChildAction}s, keyed by sub-menu text.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	protected Map<String, Collection<IAction>> createChildSubmenuActions;

	/**
	* 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 will contain a map of {@link org.eclipse.emf.edit.ui.action.CreateSiblingAction}s, keyed by submenu text.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	protected Map<String, Collection<IAction>> createSiblingSubmenuActions;

	/**
	* 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 DGActionBarContributor() {
	super(ADDITIONS_LAST_STYLE);
	loadResourceAction = new LoadResourceAction();
	validateAction = new ValidateAction();
	controlAction = new ControlAction();
	}

	/**
	* Override to handle the global actions for the model page only Otherwise,
	* other controls (e.g., StyledText) are not handled property
	*/
	@Override
	public void setActivePage(IEditorPart part) {
	IActionBars actionBars = getActionBars();
	if(part instanceof DDModelPage) {
	actionBars.setGlobalActionHandler(ActionFactory.DELETE.getId(), deleteAction);
	actionBars.setGlobalActionHandler(ActionFactory.CUT.getId(), cutAction);
	actionBars.setGlobalActionHandler(ActionFactory.COPY.getId(), copyAction);
	actionBars.setGlobalActionHandler(ActionFactory.PASTE.getId(), pasteAction);
	} else {
	actionBars.setGlobalActionHandler(ActionFactory.DELETE.getId(), null);
	actionBars.setGlobalActionHandler(ActionFactory.CUT.getId(), null);
	actionBars.setGlobalActionHandler(ActionFactory.COPY.getId(), null);
	actionBars.setGlobalActionHandler(ActionFactory.PASTE.getId(), null);
	}
	}

	/**
	* 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("dg-settings"));
	toolBarManager.add(new Separator("dg-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(DDEditorPlugin.INSTANCE.getString("_UI_DGEditor_menu"), "org.eclipse.papyrus.dd.dgMenuID");
	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(DDEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
	submenuManager.insertBefore("additions", createChildMenuManager);
	// Prepare for CreateSibling item addition or removal.
	//
	createSiblingMenuManager = new MenuManager(DDEditorPlugin.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, createChildSubmenuActions);
	depopulateManager(createChildMenuManager, createChildActions);
	}
	if(createSiblingMenuManager != null) {
	depopulateManager(createSiblingMenuManager, createSiblingSubmenuActions);
	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);
	createChildSubmenuActions = extractSubmenuActions(createChildActions);
	createSiblingActions = generateCreateSiblingActions(newSiblingDescriptors, selection);
	createSiblingSubmenuActions = extractSubmenuActions(createSiblingActions);
	if(createChildMenuManager != null) {
	populateManager(createChildMenuManager, createChildSubmenuActions, null);
	populateManager(createChildMenuManager, createChildActions, null);
	createChildMenuManager.update(true);
	}
	if(createSiblingMenuManager != null) {
	populateManager(createSiblingMenuManager, createSiblingSubmenuActions, 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 extracts those actions in the <code>submenuActions</code> collection whose text is qualified and returns
	* a map of these actions, keyed by submenu text.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	protected Map<String, Collection<IAction>> extractSubmenuActions(Collection<IAction> createActions) {
	Map<String, Collection<IAction>> createSubmenuActions = new LinkedHashMap<String, Collection<IAction>>();
	if(createActions != null) {
	for(Iterator<IAction> actions = createActions.iterator(); actions.hasNext();) {
	IAction action = actions.next();
	StringTokenizer st = new StringTokenizer(action.getText(), "\|");
	if(st.countTokens() == 2) {
	String text = st.nextToken().trim();
	Collection<IAction> submenuActions = createSubmenuActions.get(text);
	if(submenuActions == null) {
	createSubmenuActions.put(text, submenuActions = new ArrayList<IAction>());
	}
	action.setText(st.nextToken().trim());
	submenuActions.add(action);
	actions.remove();
	}
	}
	}
	return createSubmenuActions;
	}

	/**
	* This populates the specified <code>manager</code> with {@link org.eclipse.jface.action.MenuManager}s containing
	* {@link org.eclipse.jface.action.ActionContributionItem}s based on the {@link org.eclipse.jface.action.IAction}s
	* contained in the <code>submenuActions</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, Map<String, Collection<IAction>> submenuActions, String contributionID) {
	if(submenuActions != null) {
	for(Map.Entry<String, Collection<IAction>> entry : submenuActions.entrySet()) {
	MenuManager submenuManager = new MenuManager(entry.getKey());
	if(contributionID != null) {
	manager.insertBefore(contributionID, submenuManager);
	} else {
	manager.add(submenuManager);
	}
	populateManager(submenuManager, entry.getValue(), null);
	}
	}
	}

	/**
	* This removes from the specified <code>manager</code> all {@link org.eclipse.jface.action.MenuManager}s and their
	* {@link org.eclipse.jface.action.ActionContributionItem}s based on the {@link org.eclipse.jface.action.IAction}s
	* contained in the <code>submenuActions</code> map.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated NOT
	*/
	protected void depopulateManager(IContributionManager manager, Map<String, Collection<IAction>> submenuActions) {
	if(submenuActions != null) {
	IContributionItem[] items = manager.getItems();
	for(int i = 0; i < items.length; i++) {
	IContributionItem contributionItem = items[i];
	if(contributionItem instanceof MenuManager) {
	MenuManager submenuManager = (MenuManager)contributionItem;
	if(submenuActions.containsKey(submenuManager.getMenuText())) {
	depopulateManager(submenuManager, submenuActions.get(contributionItem.toString()));
	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(DDEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
	populateManager(submenuManager, createChildSubmenuActions, null);
	populateManager(submenuManager, createChildActions, null);
	menuManager.insertBefore("edit", submenuManager);
	submenuManager = new MenuManager(DDEditorPlugin.INSTANCE.getString("_UI_CreateSibling_menu_item"));
	populateManager(submenuManager, createSiblingSubmenuActions, null);
	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;
	}
	}