com.bluexml.side.form.presentation.FormActionBarContributor.java Source code

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/*
Copyright (C) 2007-2011  BlueXML - www.bluexml.com
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
    
*/

/**
 * <copyright>
 * </copyright>
 *
 * $Id$
 */
package com.bluexml.side.form.presentation;

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

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.resource.ImageDescriptor;
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.TreeSelection;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.PartInitException;

import com.bluexml.side.clazz.Clazz;
import com.bluexml.side.form.Field;
import com.bluexml.side.form.FormClass;
import com.bluexml.side.form.FormCollection;
import com.bluexml.side.form.FormContainer;
import com.bluexml.side.form.FormElement;
import com.bluexml.side.form.FormSearch;
import com.bluexml.side.form.FormWorkflow;
import com.bluexml.side.form.ModelChoiceField;
import com.bluexml.side.form.Reference;
import com.bluexml.side.form.SearchFormCollection;
import com.bluexml.side.form.WorkflowFormCollection;
import com.bluexml.side.form.clazz.AddRefAction;
import com.bluexml.side.form.clazz.CollapseReferenceAction;
import com.bluexml.side.form.clazz.ExpandModelChoice;
import com.bluexml.side.form.clazz.InitializeFormClassAction;
import com.bluexml.side.form.clazz.ShowLinkedClassAction;
import com.bluexml.side.form.clazz.SynchonizeWithClassDiagramAction;
import com.bluexml.side.form.clazz.utils.ClassDiagramUtils;
import com.bluexml.side.form.common.CopyFormAction;
import com.bluexml.side.form.common.GroupAttributeAction;
import com.bluexml.side.form.common.RefreshOutlineAction;
import com.bluexml.side.form.common.RestoreFormElementAction;
import com.bluexml.side.form.common.TransformFieldAction;
import com.bluexml.side.form.common.utils.FieldTransformation;
import com.bluexml.side.form.common.utils.FormDiagramUtils;
import com.bluexml.side.form.search.InitializeFormSearchAction;
import com.bluexml.side.form.workflow.InitializeFormWorkflowAction;
import com.bluexml.side.form.workflow.ShowLinkedTaskAction;
import com.bluexml.side.form.workflow.SynchonizeWithWorkflowDiagramAction;

/**
 * This is the action bar contributor for the Form model editor.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public class FormActionBarContributor 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(
            FormsEditorPlugin.INSTANCE.getString("_UI_ShowPropertiesView_menu_item")) {
        @Override
        public void run() {
            try {
                getPage().showView("org.eclipse.ui.views.PropertySheet");
            } catch (PartInitException exception) {
                FormsEditorPlugin.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(
            FormsEditorPlugin.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();
                }
            }
        }
    };

    protected GroupAttributeAction groupAttributeAction = new GroupAttributeAction();
    protected InitializeFormClassAction initializeFormClassAction = new InitializeFormClassAction();
    protected InitializeFormWorkflowAction initializeFormWorkflowAction = new InitializeFormWorkflowAction();
    protected InitializeFormSearchAction initializeFormSearchAction = new InitializeFormSearchAction();
    protected ShowLinkedTaskAction showLinkedTaskAction = new ShowLinkedTaskAction();
    protected ShowLinkedClassAction showLinkedClassAction = new ShowLinkedClassAction();
    protected RefreshOutlineAction refreshOutlineAction = new RefreshOutlineAction();
    protected CollapseReferenceAction collapseReferenceAction = new CollapseReferenceAction();
    protected CopyFormAction copyFormAction = new CopyFormAction();
    protected SynchonizeWithClassDiagramAction synchronizeWithClassDiagram = new SynchonizeWithClassDiagramAction();
    protected SynchonizeWithWorkflowDiagramAction synchronizeWithWorkflowDiagram = new SynchonizeWithWorkflowDiagramAction();

    /**
     * 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 FormActionBarContributor() {
        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("form-settings"));
        toolBarManager.add(new Separator("form-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(FormsEditorPlugin.INSTANCE.getString("_UI_FormEditor_menu"),
                "com.bluexml.side.formMenuID");
        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(FormsEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
        submenuManager.insertBefore("additions", createChildMenuManager);

        // Prepare for CreateSibling item addition or removal.
        //
        createSiblingMenuManager = new MenuManager(
                FormsEditorPlugin.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(FormsEditorPlugin.INSTANCE.getString("_UI_CreateChild_menu_item"));
        populateManager(submenuManager, createChildActions, null);
        menuManager.insertBefore("edit", submenuManager);

        submenuManager = new MenuManager(FormsEditorPlugin.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) {
        Object o = ((this.selectionProvider != null && this.selectionProvider.getSelection() != null)
                ? ((TreeSelection) this.selectionProvider.getSelection()).getFirstElement()
                : null);

        menuManager.insertAfter("additions-end", new Separator("ui-actions"));
        menuManager.insertAfter("ui-actions", showPropertiesViewAction);

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

        menuManager.insertAfter("ui-actions", new Separator("ui-commonActions"));
        if (o != null) {
            // Addition of ImageDescriptor isn't available in current jface version.
            if (o instanceof ModelChoiceField) {
                MenuManager refMenu = new MenuManager("Relation", "relation");
                collapseReferenceAction.setImageDescriptor(
                        ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/collapse.gif"));
                refMenu.add(collapseReferenceAction);

                // ---- Expand Menu
                IMenuManager expandMenu = new MenuManager("Expand to", "expand");
                expandMenu.setRemoveAllWhenShown(true);
                if (this.selectionProvider != null && this.selectionProvider.getSelection() != null
                        && ((TreeSelection) this.selectionProvider.getSelection()).size() == 1
                        && ((TreeSelection) this.selectionProvider.getSelection())
                                .getFirstElement() instanceof ModelChoiceField) {
                    expandMenu.add(new Action("never shown entry") {
                    });//needed if it's a submenu
                    IMenuListener expandListener = new IMenuListener() {
                        public void menuAboutToShow(IMenuManager m) {
                            fillExpandContextMenu(m);
                        }
                    };
                    expandMenu.addMenuListener(expandListener);
                }
                refMenu.add(expandMenu);

                // ---- Add Menu
                IMenuManager addRefMenu = new MenuManager("Add reference", "addRef");
                addRefMenu.setRemoveAllWhenShown(true);
                if (this.selectionProvider != null && this.selectionProvider.getSelection() != null
                        && ((TreeSelection) this.selectionProvider.getSelection()).size() == 1
                        && ((TreeSelection) this.selectionProvider.getSelection())
                                .getFirstElement() instanceof Reference) {
                    Reference ref = ((Reference) ((TreeSelection) this.selectionProvider.getSelection())
                            .getFirstElement());
                    if (ref.getMax_bound() == -1 || ref.getMax_bound() > ref.getTarget().size()) {
                        addRefMenu.add(new Action("never shown entry") {
                        });//needed if it's a submenu
                        IMenuListener expandListener = new IMenuListener() {
                            public void menuAboutToShow(IMenuManager m) {
                                fillAddRefContextMenu(m);
                            }
                        };
                        addRefMenu.addMenuListener(expandListener);
                    }
                }
                refMenu.add(addRefMenu);
                menuManager.insertAfter("ui-actions", refMenu);
            }
            // ---- Transform Menu
            if (o instanceof Field) {
                IMenuManager transformMenu = new MenuManager("Transform", "transform");
                transformMenu.add(new Action("never shown entry") {
                }); //needed if it's a submenu
                transformMenu.setRemoveAllWhenShown(true);
                IMenuListener transformListener = new IMenuListener() {
                    public void menuAboutToShow(IMenuManager m) {
                        fillTransformContextMenu(m);
                    }
                };
                transformMenu.addMenuListener(transformListener);
                menuManager.insertAfter("ui-actions", transformMenu);
            }

            if (o instanceof FormContainer) {
                copyFormAction.setImageDescriptor(
                        ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/copy.png"));
                menuManager.insertAfter("ui-actions", copyFormAction);
            }

            if (((TreeSelection) this.selectionProvider.getSelection()).size() == 1
                    || haveSameFormContainer((TreeSelection) this.selectionProvider.getSelection())) {
                groupAttributeAction.setImageDescriptor(
                        ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/group.png"));
                menuManager.insertAfter("ui-actions", groupAttributeAction);
            }

            if (o instanceof FormClass) {
                initializeFormClassAction.setImageDescriptor(
                        ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/initializeFromClass.png"));
                menuManager.insertAfter("ui-actions", initializeFormClassAction);
            }

            if (o instanceof WorkflowFormCollection) {
                initializeFormWorkflowAction.setImageDescriptor(
                        ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/initializeFromClass.png"));
                menuManager.insertAfter("ui-actions", initializeFormWorkflowAction);
            }

            if (o instanceof FormSearch) {
                initializeFormSearchAction.setImageDescriptor(
                        ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/initializeFromClass.png"));
                menuManager.insertAfter("ui-actions", initializeFormSearchAction);
            }

            if (o instanceof FormWorkflow) {
                showLinkedTaskAction.setImageDescriptor(
                        ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/show_link.png"));
                menuManager.insertAfter("ui-actions", showLinkedTaskAction);
            }

            if (o instanceof FormClass) {
                showLinkedClassAction.setImageDescriptor(
                        ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/show_link.png"));
                menuManager.insertAfter("ui-actions", showLinkedClassAction);
            }

            if (o instanceof FormContainer) {
                MenuManager restoreMenu = new MenuManager("Restore", "restore");
                if (((FormContainer) o).getDisabled().size() > 0) {
                    restoreMenu.add(new Action("never shown entry") {
                    });
                    restoreMenu.setRemoveAllWhenShown(true);
                    IMenuListener restoreListener = new IMenuListener() {
                        public void menuAboutToShow(IMenuManager m) {
                            fillRestoreContextMenu(m);
                        }
                    };
                    restoreMenu.addMenuListener(restoreListener);
                }
                menuManager.insertAfter("ui-actions", restoreMenu);
            }

            refreshOutlineAction.setImageDescriptor(
                    ImageDescriptor.createFromFile(this.getClass(), "/icons/menu/refreshOutline.png"));
            menuManager.insertAfter("ui-actions", refreshOutlineAction);

            if (o instanceof FormCollection) {
                if (o instanceof WorkflowFormCollection) {
                    synchronizeWithWorkflowDiagram.setImageDescriptor(ImageDescriptor
                            .createFromFile(this.getClass(), "/icons/menu/synchronizeWithClassDiagram.png"));
                    menuManager.insertAfter("ui-actions", synchronizeWithWorkflowDiagram);
                } else {
                    synchronizeWithClassDiagram.setImageDescriptor(ImageDescriptor.createFromFile(this.getClass(),
                            "/icons/menu/synchronizeWithClassDiagram.png"));
                    menuManager.insertAfter("ui-actions", synchronizeWithClassDiagram);
                }
            }
        }

        super.addGlobalActions(menuManager);
    }

    /**
     * Take a TreeSelection and return true if all have the same FormContainer as parent
     * @param selection
     * @return
     */
    private boolean haveSameFormContainer(TreeSelection selection) {
        Object o = selection.getFirstElement();
        boolean result = true;
        FormContainer parent = null;
        if (o instanceof FormElement) {
            parent = FormDiagramUtils.getParentForm((FormElement) o);
        }
        if (parent != null) {
            for (Iterator<Object> iterator = selection.iterator(); iterator.hasNext();) {
                Object s = (Object) iterator.next();
                if (s instanceof FormElement) {
                    FormContainer sParent = FormDiagramUtils.getParentForm((FormElement) s);
                    if (!parent.equals(sParent)) {
                        result = false;
                    }
                }

            }
        }
        return result;
    }

    private void fillTransformContextMenu(IMenuManager mgr) {
        Object o = ((TreeSelection) this.selectionProvider.getSelection()).getFirstElement();
        if (o instanceof Field) {
            Field f = (Field) o;
            List<String> list = FieldTransformation.getAvailableTransformation(f);
            for (String fieldName : list) {
                if (fieldName != null && fieldName.length() > 0) {
                    TransformFieldAction tfa = new TransformFieldAction(fieldName, f);
                    tfa.setActiveWorkbenchPart(activeEditor);
                    selectionProvider.addSelectionChangedListener((ISelectionChangedListener) tfa);
                    mgr.add(tfa);
                }
            }
        }
    }

    private void fillRestoreContextMenu(IMenuManager mgr) {
        Object o = ((TreeSelection) this.selectionProvider.getSelection()).getFirstElement();
        if (o instanceof FormClass) {
            FormClass fc = (FormClass) o;
            for (FormElement fe : fc.getDisabled()) {
                RestoreFormElementAction rfa = new RestoreFormElementAction(fe, fc);
                rfa.setActiveWorkbenchPart(activeEditor);
                selectionProvider.addSelectionChangedListener((ISelectionChangedListener) rfa);
                mgr.add(rfa);
            }
        }
    }

    protected void fillExpandContextMenu(IMenuManager mgr) {
        Object o = ((TreeSelection) this.selectionProvider.getSelection()).getFirstElement();
        if (o instanceof ModelChoiceField && !(o instanceof Reference)) {
            ModelChoiceField mcf = (ModelChoiceField) o;
            Set<Clazz> classes = ClassDiagramUtils.getDescendantClazzs(mcf.getReal_class());
            for (Clazz c : classes) {
                ExpandModelChoice emc = new ExpandModelChoice(c, mcf);
                emc.setActiveWorkbenchPart(activeEditor);
                selectionProvider.addSelectionChangedListener((ISelectionChangedListener) emc);
                mgr.add(emc);
            }
        }
    }

    protected void fillAddRefContextMenu(IMenuManager mgr) {
        Object o = ((TreeSelection) this.selectionProvider.getSelection()).getFirstElement();
        if (o instanceof Reference) {
            Reference ref = (Reference) o;
            Set<Clazz> classes = ClassDiagramUtils.getDescendantClazzs(ref.getReal_class());
            for (Clazz c : classes) {
                AddRefAction ara = new AddRefAction(c, ref);
                ara.setActiveWorkbenchPart(activeEditor);
                selectionProvider.addSelectionChangedListener((ISelectionChangedListener) ara);
                mgr.add(ara);
            }
        }
    }

    /**
     * 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;
    }

    @Override
    public void activate() {
        super.activate();
        groupAttributeAction.setActiveWorkbenchPart(activeEditor);
        initializeFormClassAction.setActiveWorkbenchPart(activeEditor);
        initializeFormWorkflowAction.setActiveWorkbenchPart(activeEditor);
        initializeFormSearchAction.setActiveWorkbenchPart(activeEditor);
        collapseReferenceAction.setActiveWorkbenchPart(activeEditor);
        copyFormAction.setActiveWorkbenchPart(activeEditor);
        synchronizeWithClassDiagram.setActiveWorkbenchPart(activeEditor);
        synchronizeWithWorkflowDiagram.setActiveWorkbenchPart(activeEditor);

        ISelectionProvider selectionProvider = activeEditor instanceof ISelectionProvider
                ? (ISelectionProvider) activeEditor
                : activeEditor.getEditorSite().getSelectionProvider();
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) groupAttributeAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) initializeFormClassAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) initializeFormWorkflowAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) initializeFormSearchAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) showLinkedTaskAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) showLinkedClassAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) refreshOutlineAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) collapseReferenceAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) copyFormAction);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) synchronizeWithClassDiagram);
        selectionProvider.addSelectionChangedListener((ISelectionChangedListener) synchronizeWithWorkflowDiagram);
    }
}