/*******************************************************************************
 *  Copyright (c) 2000, 2015 IBM Corporation and others.
 *
 *  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:
 *     IBM Corporation - initial API and implementation
 *     Anton Leherbauer (Wind River Systems) - Adapted for CDT
 *******************************************************************************/
package org.eclipse.cdt.ui.actions;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.core.model.ISourceReference;
import org.eclipse.cdt.internal.ui.IContextMenuConstants;
import org.eclipse.cdt.internal.ui.actions.ActionMessages;
import org.eclipse.cdt.internal.ui.actions.CDTQuickMenuCreator;
import org.eclipse.cdt.internal.ui.actions.CopyQualifiedNameAction;
import org.eclipse.cdt.internal.ui.editor.AddIncludeAction;
import org.eclipse.cdt.internal.ui.editor.CEditor;
import org.eclipse.cdt.internal.ui.editor.ICEditorActionDefinitionIds;
import org.eclipse.cdt.internal.ui.editor.OrganizeIncludesAction;
import org.eclipse.cdt.internal.ui.editor.SortLinesAction;
import org.eclipse.cdt.internal.ui.refactoring.overridemethods.OverrideMethodsAction;
import org.eclipse.cdt.ui.refactoring.actions.GettersAndSettersAction;
import org.eclipse.cdt.ui.refactoring.actions.ImplementMethodAction;
import org.eclipse.cdt.ui.refactoring.actions.RefactoringAction;
import org.eclipse.core.commands.IHandler;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
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.ui.IActionBars;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchCommandConstants;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.actions.ActionGroup;
import org.eclipse.ui.actions.AddBookmarkAction;
import org.eclipse.ui.actions.AddTaskAction;
import org.eclipse.ui.handlers.IHandlerActivation;
import org.eclipse.ui.handlers.IHandlerService;
import org.eclipse.ui.ide.IDEActionFactory;
import org.eclipse.ui.part.Page;
import org.eclipse.ui.texteditor.ITextEditorActionConstants;
import org.eclipse.ui.texteditor.IUpdate;

/**
 * Action group that adds the source and generate actions to a part's context
 * menu and installs handlers for the corresponding global menu actions.
 *
 * <p>
 * This class may be instantiated; it is not intended to be subclassed.
 * </p>
 *
 * @noextend This class is not intended to be subclassed by clients.
 * @since 4.0
 */
public class GenerateActionGroup extends ActionGroup implements ISelectionChangedListener {

	/**
	 * Pop-up menu: id of the source sub menu (value <code>org.eclipse.cdt.ui.source.menu</code>).
	 */
	public static final String MENU_ID = "org.eclipse.cdt.ui.source.menu"; //$NON-NLS-1$

	/**
	 * Pop-up menu: id of the organize group of the source sub menu (value
	 * <code>organizeGroup</code>).
	 */
	public static final String GROUP_ORGANIZE = "organizeGroup"; //$NON-NLS-1$

	/**
	 * Pop-up menu: id of the generate group of the source sub menu (value
	 * <code>generateGroup</code>).
	 */
	public static final String GROUP_GENERATE = "generateGroup"; //$NON-NLS-1$

	/**
	 * Pop-up menu: id of the code group of the source sub menu (value
	 * <code>codeGroup</code>).
	 */
	public static final String GROUP_CODE = "codeGroup"; //$NON-NLS-1$

	/**
	 * Pop-up menu: id of the externalize group of the source sub menu (value
	 * <code>externalizeGroup</code>).
	 */
	private static final String GROUP_EXTERNALIZE = "externalizeGroup"; //$NON-NLS-1$

	/**
	 * Pop-up menu: id of the comment group of the source sub menu (value
	 * <code>commentGroup</code>).
	 */
	private static final String GROUP_COMMENT = "commentGroup"; //$NON-NLS-1$

	/**
	 * Pop-up menu: id of the edit group of the source sub menu (value
	 * <code>editGroup</code>).
	 */
	private static final String GROUP_EDIT = "editGroup"; //$NON-NLS-1$

	private CEditor fEditor;
	private IWorkbenchSite fSite;
	private String fGroupName = IContextMenuConstants.GROUP_REORGANIZE;
	private List<ISelectionChangedListener> fRegisteredSelectionListeners;
	private List<RefactoringAction> fRefactorActions = new ArrayList<>();

	private AddIncludeAction fAddInclude;
	private OverrideMethodsAction fOverrideMethods;
	//	private GenerateHashCodeEqualsAction fHashCodeEquals;
	private GettersAndSettersAction fAddGetterSetter;
	private ImplementMethodAction fImplementMethod;
	//	private AddDelegateMethodsAction fAddDelegateMethods;
	//	private AddUnimplementedConstructorsAction fAddUnimplementedConstructors;
	//	private GenerateNewConstructorUsingFieldsAction fGenerateConstructorUsingFields;
	//	private AddJavaDocStubAction fAddCppDocStub;
	private AddBookmarkAction fAddBookmark;
	private AddTaskAction fAddTaskAction;
	//	private ExternalizeStringsAction fExternalizeStrings;
	//	private CleanUpAction fCleanUp;
	//
	private OrganizeIncludesAction fOrganizeIncludes;
	//	private SortMembersAction fSortMembers;
	private SortLinesAction fSortLines;
	private FormatAllAction fFormatAll;
	private CopyQualifiedNameAction fCopyQualifiedNameAction;
	//
	private static final String QUICK_MENU_ID = "org.eclipse.cdt.ui.edit.text.c.source.quickMenu"; //$NON-NLS-1$

	private IHandlerActivation fQuickAccessHandlerActivation;
	private IHandlerService fHandlerService;

	private final ISelectionProvider fSelectionProvider;

	/**
	 * Note: This constructor is for internal use only. Clients should not call this constructor.
	 * @param editor the C editor
	 * @param groupName the group name to add the action to
	 *
	 * @noreference This constructor is not intended to be referenced by clients.
	 */
	public GenerateActionGroup(CEditor editor, String groupName) {
		fSite = editor.getSite();
		fSelectionProvider = fSite.getSelectionProvider();
		fEditor = editor;
		fGroupName = groupName;

		fAddInclude = new AddIncludeAction(editor);
		fAddInclude.setActionDefinitionId(ICEditorActionDefinitionIds.ADD_INCLUDE);
		editor.setAction("AddInclude", fAddInclude); //$NON-NLS-1$

		fOrganizeIncludes = new OrganizeIncludesAction(editor);
		fOrganizeIncludes.setActionDefinitionId(ICEditorActionDefinitionIds.ORGANIZE_INCLUDES);
		editor.setAction("OrganizeIncludes", fOrganizeIncludes); //$NON-NLS-1$

		//		fSortMembers= new SortMembersAction(editor);
		//		fSortMembers.setActionDefinitionId(ICEditorActionDefinitionIds.SORT_MEMBERS);
		//		editor.setAction("SortMembers", fSortMembers); //$NON-NLS-1$

		fSortLines = new SortLinesAction(editor);
		fSortLines.setActionDefinitionId(ICEditorActionDefinitionIds.SORT_LINES);
		editor.setAction("SortLines", fSortLines); //$NON-NLS-1$

		fCopyQualifiedNameAction = new CopyQualifiedNameAction(editor);
		fCopyQualifiedNameAction.setActionDefinitionId(ICEditorActionDefinitionIds.COPY_QUALIFIED_NAME);
		editor.setAction("CopyQualifiedName", fCopyQualifiedNameAction); //$NON-NLS-1$
		editor.markAsSelectionDependentAction("CopyQualifiedName", true); //$NON-NLS-1$
		//
		fOverrideMethods = new OverrideMethodsAction(editor);
		fOverrideMethods.setActionDefinitionId(ICEditorActionDefinitionIds.OVERRIDE_METHODS);
		editor.setAction("OverrideMethods", fOverrideMethods); //$NON-NLS-1$
		//
		fAddGetterSetter = new GettersAndSettersAction(editor);
		fAddGetterSetter.setActionDefinitionId(ICEditorActionDefinitionIds.GETTERS_AND_SETTERS);
		editor.setAction("org.eclipse.cdt.ui.refactor.getters.and.setters", fAddGetterSetter); //$NON-NLS-1$

		fImplementMethod = new ImplementMethodAction(editor);
		fImplementMethod.setActionDefinitionId(ICEditorActionDefinitionIds.IMPLEMENT_METHOD);
		editor.setAction("org.eclipse.cdt.ui.refactor.implement.method", fImplementMethod); //$NON-NLS-1$
		//
		//		fAddDelegateMethods= new AddDelegateMethodsAction(editor);
		//		fAddDelegateMethods.setActionDefinitionId(ICEditorActionDefinitionIds.CREATE_DELEGATE_METHODS);
		//		editor.setAction("AddDelegateMethods", fAddDelegateMethods); //$NON-NLS-1$
		//
		//		fAddUnimplementedConstructors= new AddUnimplementedConstructorsAction(editor);
		//		fAddUnimplementedConstructors.setActionDefinitionId(ICEditorActionDefinitionIds.ADD_UNIMPLEMENTED_CONSTRUCTORS);
		//		editor.setAction("AddUnimplementedConstructors", fAddUnimplementedConstructors); //$NON-NLS-1$
		//
		//		fGenerateConstructorUsingFields= new GenerateNewConstructorUsingFieldsAction(editor);
		//		fGenerateConstructorUsingFields.setActionDefinitionId(ICEditorActionDefinitionIds.GENERATE_CONSTRUCTOR_USING_FIELDS);
		//		editor.setAction("GenerateConstructorUsingFields", fGenerateConstructorUsingFields); //$NON-NLS-1$
		//
		//		fHashCodeEquals= new GenerateHashCodeEqualsAction(editor);
		//		fHashCodeEquals.setActionDefinitionId(ICEditorActionDefinitionIds.GENERATE_HASHCODE_EQUALS);
		//		editor.setAction("GenerateHashCodeEquals", fHashCodeEquals); //$NON-NLS-1$
		//
		//		fAddCppDocStub= new AddJavaDocStubAction(editor);
		//		fAddCppDocStub.setActionDefinitionId(ICEditorActionDefinitionIds.ADD_JAVADOC_COMMENT);
		//		editor.setAction("AddJavadocComment", fAddCppDocStub); //$NON-NLS-1$
		//
		//		fCleanUp= new CleanUpAction(editor);
		//		fCleanUp.setActionDefinitionId(ICEditorActionDefinitionIds.CLEAN_UP);
		//		editor.setAction("CleanUp", fCleanUp); //$NON-NLS-1$
		//
		//		fExternalizeStrings= new ExternalizeStringsAction(editor);
		//		fExternalizeStrings.setActionDefinitionId(ICEditorActionDefinitionIds.EXTERNALIZE_STRINGS);
		//		editor.setAction("ExternalizeStrings", fExternalizeStrings); //$NON-NLS-1$
		//
		installQuickAccessAction();
	}

	/**
	 * Creates a new <code>GenerateActionGroup</code>. The group
	 * requires that the selection provided by the page's selection provider
	 * is of type <code>org.eclipse.jface.viewers.IStructuredSelection</code>.
	 *
	 * @param page the page that owns this action group
	 */
	public GenerateActionGroup(Page page) {
		this(page.getSite(), null);

		installQuickAccessAction();
	}

	/**
	 * Creates a new <code>GenerateActionGroup</code>. The group
	 * requires that the selection provided by the part's selection provider
	 * is of type <code>org.eclipse.jface.viewers.IStructuredSelection</code>.
	 *
	 * @param part the view part that owns this action group
	 */
	public GenerateActionGroup(IViewPart part) {
		this(part.getSite(), null);

		installQuickAccessAction();
	}

	/**
	 * Creates a new <code>GenerateActionGroup</code>. The group requires
	 * that the selection provided by the given selection provider is of type
	 * {@link IStructuredSelection}.
	 *
	 * @param site the site that will own the action group.
	 * @param selectionProvider the selection provider used instead of the
	 *  page selection provider.
	 *
	 * @since 5.4
	 */
	public GenerateActionGroup(IWorkbenchSite site, ISelectionProvider selectionProvider) {
		fSite = site;
		fSelectionProvider = selectionProvider == null ? fSite.getSelectionProvider() : selectionProvider;
		ISelection selection = fSelectionProvider.getSelection();

		fOverrideMethods = new OverrideMethodsAction();
		fOverrideMethods.setActionDefinitionId(ICEditorActionDefinitionIds.OVERRIDE_METHODS);
		fOverrideMethods.setSite(fSite);
		fRefactorActions.add(fOverrideMethods);

		fAddGetterSetter = new GettersAndSettersAction();
		fAddGetterSetter.setActionDefinitionId(ICEditorActionDefinitionIds.GETTERS_AND_SETTERS);
		fAddGetterSetter.setSite(fSite);
		fRefactorActions.add(fAddGetterSetter);

		fImplementMethod = new ImplementMethodAction();
		fImplementMethod.setActionDefinitionId(ICEditorActionDefinitionIds.IMPLEMENT_METHOD);
		fImplementMethod.setSite(fSite);
		fRefactorActions.add(fImplementMethod);

		//		fAddDelegateMethods= new AddDelegateMethodsAction(site);
		//		fAddDelegateMethods.setActionDefinitionId(ICEditorActionDefinitionIds.CREATE_DELEGATE_METHODS);
		//
		//		fAddUnimplementedConstructors= new AddUnimplementedConstructorsAction(site);
		//		fAddUnimplementedConstructors.setActionDefinitionId(ICEditorActionDefinitionIds.ADD_UNIMPLEMENTED_CONSTRUCTORS);
		//
		//		fGenerateConstructorUsingFields= new GenerateNewConstructorUsingFieldsAction(site);
		//		fGenerateConstructorUsingFields.setActionDefinitionId(ICEditorActionDefinitionIds.GENERATE_CONSTRUCTOR_USING_FIELDS);
		//
		//		fHashCodeEquals= new GenerateHashCodeEqualsAction(site);
		//		fHashCodeEquals.setActionDefinitionId(ICEditorActionDefinitionIds.GENERATE_HASHCODE_EQUALS);
		//
		//		fAddCppDocStub= new AddJavaDocStubAction(site);
		//		fAddCppDocStub.setActionDefinitionId(ICEditorActionDefinitionIds.ADD_JAVADOC_COMMENT);

		fAddBookmark = new AddBookmarkAction(site, true);
		fAddBookmark.setActionDefinitionId(IWorkbenchCommandConstants.EDIT_ADD_BOOKMARK);

		fAddTaskAction = new AddTaskAction(site);
		fAddTaskAction.setActionDefinitionId(IWorkbenchCommandConstants.EDIT_ADD_TASK);

		//		fExternalizeStrings= new ExternalizeStringsAction(site);
		//		fExternalizeStrings.setActionDefinitionId(ICEditorActionDefinitionIds.EXTERNALIZE_STRINGS);
		//
		//		fOrganizeIncludes= new OrganizeIncludesAction(site);
		//		fOrganizeIncludes.setActionDefinitionId(ICEditorActionDefinitionIds.ORGANIZE_INCLUDES);
		//
		//		fSortMembers= new SortMembersAction(site);
		//		fSortMembers.setActionDefinitionId(ICEditorActionDefinitionIds.SORT_MEMBERS);
		//
		fFormatAll = new FormatAllAction(site);
		fFormatAll.setActionDefinitionId(ICEditorActionDefinitionIds.FORMAT);
		//      fCopyQualifiedNameAction = new CopyQualifiedNameAction(site);
		//      fCopyQualifiedNameAction.setActionDefinitionId(ICEditorActionDefinitionIds.COPY_QUALIFIED_NAME);
		//
		//		fCleanUp= new CleanUpAction(site);
		//		fCleanUp.setActionDefinitionId(ICEditorActionDefinitionIds.CLEAN_UP);

		//		fAddDelegateMethods.update(selection);
		//		fAddUnimplementedConstructors.update(selection);
		//		fGenerateConstructorUsingFields.update(selection);
		//		fHashCodeEquals.update(selection);
		//		fAddCppDocStub.update(selection);
		//		fExternalizeStrings.update(selection);
		//		fFindNLSProblems.update(selection);
		//		fCleanUp.update(selection);
		//		fOrganizeIncludes.update(selection);
		//		fSortMembers.update(selection);
		fFormatAll.update(selection);
		if (selection instanceof IStructuredSelection) {
			IStructuredSelection ss = (IStructuredSelection) selection;
			fAddBookmark.selectionChanged(ss);
			fAddTaskAction.selectionChanged(ss);
		} else {
			fAddBookmark.setEnabled(false);
			fAddTaskAction.setEnabled(false);
		}

		//		registerSelectionListener(fSelectionProvider, fAddDelegateMethods);
		//		registerSelectionListener(fSelectionProvider, fAddUnimplementedConstructors);
		//		registerSelectionListener(fSelectionProvider, fGenerateConstructorUsingFields);
		//		registerSelectionListener(fSelectionProvider, fHashCodeEquals);
		//		registerSelectionListener(fSelectionProvider, fAddCppDocStub);
		registerSelectionListener(fSelectionProvider, fAddBookmark);
		//		registerSelectionListener(fSelectionProvider, fExternalizeStrings);
		//		registerSelectionListener(fSelectionProvider, fFindNLSProblems);
		//		registerSelectionListener(fSelectionProvider, fOrganizeIncludes);
		registerSelectionListener(fSelectionProvider, fFormatAll);
		//		registerSelectionListener(fSelectionProvider, fSortMembers);
		registerSelectionListener(fSelectionProvider, fAddTaskAction);
		//		registerSelectionListener(fSelectionProvider, fCleanUp);
		//      registerSelectionListener(fSelectionProvider, fCopyQualifiedNameAction);

		selectionChanged(new SelectionChangedEvent(fSelectionProvider, selection));
		registerSelectionListener(fSelectionProvider, this);
	}

	private void installQuickAccessAction() {
		fHandlerService = fSite.getService(IHandlerService.class);
		if (fHandlerService != null) {
			IHandler handler = new CDTQuickMenuCreator(fEditor) {
				@Override
				protected void fillMenu(IMenuManager menu) {
					fillQuickMenu(menu);
				}
			}.createHandler();
			fQuickAccessHandlerActivation = fHandlerService.activateHandler(QUICK_MENU_ID, handler);
		}
	}

	private void registerSelectionListener(ISelectionProvider provider, ISelectionChangedListener listener) {
		if (fRegisteredSelectionListeners == null)
			fRegisteredSelectionListeners = new ArrayList<>(10);
		provider.addSelectionChangedListener(listener);
		fRegisteredSelectionListeners.add(listener);
	}

	/*
	 * The state of the editor owning this action group has changed.
	 * This method does nothing if the group's owner isn't an
	 * editor.
	 */
	/**
	 * Note: This method is for internal use only. Clients should not call this method.
	 */
	public void editorStateChanged() {
		Assert.isTrue(isEditorOwner());
	}

	/*
	 * Method declared in ActionGroup
	 */
	@Override
	public void fillActionBars(IActionBars actionBar) {
		super.fillActionBars(actionBar);
		setGlobalActionHandlers(actionBar);
	}

	/*
	 * Method declared in ActionGroup
	 */
	@Override
	public void fillContextMenu(IMenuManager menu) {
		super.fillContextMenu(menu);
		MenuManager subMenu = new MenuManager(ActionMessages.SourceMenu_label, MENU_ID);
		subMenu.setActionDefinitionId(QUICK_MENU_ID);
		int added = 0;
		if (isEditorOwner()) {
			added = fillEditorSubMenu(subMenu);
		} else {
			added = fillViewSubMenu(subMenu);
		}
		if (added > 0)
			menu.appendToGroup(fGroupName, subMenu);
	}

	private void fillQuickMenu(IMenuManager menu) {
		if (isEditorOwner()) {
			fillEditorSubMenu(menu);
		} else {
			fillViewSubMenu(menu);
		}
	}

	private int fillEditorSubMenu(IMenuManager source) {
		int added = 0;
		source.add(new Separator(GROUP_COMMENT));
		added += addEditorAction(source, "ToggleComment"); //$NON-NLS-1$
		added += addEditorAction(source, "AddBlockComment"); //$NON-NLS-1$
		added += addEditorAction(source, "RemoveBlockComment"); //$NON-NLS-1$
		//		added+= addAction(source, fAddCppDocStub);
		source.add(new Separator(GROUP_EDIT));
		added += addEditorAction(source, ITextEditorActionConstants.SHIFT_RIGHT);
		added += addEditorAction(source, ITextEditorActionConstants.SHIFT_LEFT);
		added += addEditorAction(source, "Indent"); //$NON-NLS-1$
		added += addEditorAction(source, "Format"); //$NON-NLS-1$
		added += addAction(source, fCopyQualifiedNameAction);
		source.add(new Separator(GROUP_ORGANIZE));
		added += addAction(source, fAddInclude);
		added += addAction(source, fOrganizeIncludes);
		//		added+= addAction(source, fSortMembers);
		added += addAction(source, fSortLines);
		//		added+= addAction(source, fCleanUp);
		source.add(new Separator(GROUP_GENERATE));
		added += addAction(source, fOverrideMethods);
		added += addAction(source, fAddGetterSetter);
		added += addAction(source, fImplementMethod);
		//		added+= addAction(source, fAddDelegateMethods);
		//		added+= addAction(source, fHashCodeEquals);
		//		added+= addAction(source, fGenerateConstructorUsingFields);
		//		added+= addAction(source, fAddUnimplementedConstructors);
		source.add(new Separator(GROUP_CODE));
		source.add(new Separator(GROUP_EXTERNALIZE));
		//		added+= addAction(source, fExternalizeStrings);
		return added;
	}

	private int fillViewSubMenu(IMenuManager source) {
		int added = 0;
		source.add(new Separator(GROUP_COMMENT));
		//		added+= addAction(source, fAddCppDocStub);
		source.add(new Separator(GROUP_EDIT));
		added += addAction(source, fFormatAll);
		added += addAction(source, fCopyQualifiedNameAction);
		source.add(new Separator(GROUP_ORGANIZE));
		added += addAction(source, fAddInclude);
		added += addAction(source, fOrganizeIncludes);
		//		added+= addAction(source, fSortMembers);
		//		added+= addAction(source, fCleanUp);
		source.add(new Separator(GROUP_GENERATE));
		added += addAction(source, fOverrideMethods);
		added += addAction(source, fAddGetterSetter);
		added += addAction(source, fImplementMethod);
		//		added+= addAction(source, fAddDelegateMethods);
		//		added+= addAction(source, fHashCodeEquals);
		//		added+= addAction(source, fGenerateConstructorUsingFields);
		//		added+= addAction(source, fAddUnimplementedConstructors);
		source.add(new Separator(GROUP_CODE));
		source.add(new Separator(GROUP_EXTERNALIZE));
		//		added+= addAction(source, fExternalizeStrings);
		//		added+= addAction(source, fFindNLSProblems);
		return added;
	}

	/*
	 * Method declared in ActionGroup
	 */
	@Override
	public void dispose() {
		if (fRegisteredSelectionListeners != null) {
			ISelectionProvider provider = fSelectionProvider;
			for (Iterator<ISelectionChangedListener> iter = fRegisteredSelectionListeners.iterator(); iter.hasNext();) {
				ISelectionChangedListener listener = iter.next();
				provider.removeSelectionChangedListener(listener);
			}
		}
		if (fQuickAccessHandlerActivation != null && fHandlerService != null) {
			fHandlerService.deactivateHandler(fQuickAccessHandlerActivation);
		}
		fEditor = null;
		super.dispose();
	}

	private void setGlobalActionHandlers(IActionBars actionBar) {
		actionBar.setGlobalActionHandler(CdtActionConstants.ADD_INCLUDE, fAddInclude);
		actionBar.setGlobalActionHandler(CdtActionConstants.OVERRIDE_METHODS, fOverrideMethods);
		actionBar.setGlobalActionHandler(CdtActionConstants.GETTERS_AND_SETTERS, fAddGetterSetter);
		actionBar.setGlobalActionHandler(CdtActionConstants.IMPLEMENT_METHOD, fImplementMethod);
		//		actionBar.setGlobalActionHandler(CdtActionConstants.GENERATE_DELEGATE_METHODS, fAddDelegateMethods);
		//		actionBar.setGlobalActionHandler(CdtActionConstants.ADD_CONSTRUCTOR_FROM_SUPERCLASS, fAddUnimplementedConstructors);
		//		actionBar.setGlobalActionHandler(CdtActionConstants.GENERATE_CONSTRUCTOR_USING_FIELDS, fGenerateConstructorUsingFields);
		//		actionBar.setGlobalActionHandler(CdtActionConstants.GENERATE_HASHCODE_EQUALS, fHashCodeEquals);
		//		actionBar.setGlobalActionHandler(CdtActionConstants.ADD_CPP_DOC_COMMENT, fAddCppDocStub);
		//		actionBar.setGlobalActionHandler(CdtActionConstants.EXTERNALIZE_STRINGS, fExternalizeStrings);
		//		actionBar.setGlobalActionHandler(CdtActionConstants.CLEAN_UP, fCleanUp);
		//		TODO: actionBar.setGlobalActionHandler(CdtActionConstants.ORGANIZE_INCLUDES, fOrganizeIncludes);
		//		actionBar.setGlobalActionHandler(CdtActionConstants.SORT_MEMBERS, fSortMembers);
		if (!isEditorOwner()) {
			// editor provides its own implementation of these actions.
			actionBar.setGlobalActionHandler(IDEActionFactory.BOOKMARK.getId(), fAddBookmark);
			actionBar.setGlobalActionHandler(IDEActionFactory.ADD_TASK.getId(), fAddTaskAction);
			actionBar.setGlobalActionHandler(CdtActionConstants.FORMAT, fFormatAll);
		} else {
			actionBar.setGlobalActionHandler(CdtActionConstants.COPY_QUALIFIED_NAME, fCopyQualifiedNameAction);
		}
	}

	private int addAction(IMenuManager menu, IAction action) {
		if (action instanceof IUpdate)
			((IUpdate) action).update();
		if (action != null && action.isEnabled()) {
			menu.add(action);
			return 1;
		}
		return 0;
	}

	private int addEditorAction(IMenuManager menu, String actionID) {
		if (fEditor == null)
			return 0;
		IAction action = fEditor.getAction(actionID);
		if (action == null)
			return 0;
		if (action instanceof IUpdate)
			((IUpdate) action).update();
		if (action.isEnabled()) {
			menu.add(action);
			return 1;
		}
		return 0;
	}

	private boolean isEditorOwner() {
		return fEditor != null;
	}

	private ICElement getCElement(ISelection selection) {
		if (selection instanceof IStructuredSelection) {
			IStructuredSelection ss = (IStructuredSelection) selection;
			if (ss.size() == 1) {
				Object o = ss.getFirstElement();
				if (o instanceof ICElement && o instanceof ISourceReference) {
					return (ICElement) o;
				}
			}
		}
		return null;
	}

	/**
	 * {@inheritDoc}
	 * @since 5.2
	 * @noreference This method is not intended to be referenced by clients.
	 */
	@Override
	public void selectionChanged(SelectionChangedEvent event) {
		ICElement celem = getCElement(event.getSelection());
		for (RefactoringAction action : fRefactorActions) {
			action.updateSelection(celem);
		}
	}
}
