| /****************************************************************************** |
| * Copyright (c) 2004, 2007 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| ****************************************************************************/ |
| |
| |
| package org.eclipse.gmf.runtime.diagram.ui.internal.actions; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.emf.transaction.TransactionalEditingDomain; |
| import org.eclipse.emf.workspace.AbstractEMFOperation; |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.gef.RequestConstants; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.commands.CompoundCommand; |
| import org.eclipse.gef.ui.actions.DeleteAction; |
| import org.eclipse.gmf.runtime.common.core.command.CommandResult; |
| import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil; |
| import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy; |
| import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy; |
| import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart; |
| import org.eclipse.gmf.runtime.diagram.ui.internal.DiagramUIPlugin; |
| import org.eclipse.gmf.runtime.diagram.ui.l10n.DiagramUIMessages; |
| import org.eclipse.gmf.runtime.diagram.ui.preferences.IPreferenceConstants; |
| import org.eclipse.gmf.runtime.diagram.ui.requests.GroupRequestViaKeyboard; |
| import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand; |
| import org.eclipse.gmf.runtime.notation.View; |
| import org.eclipse.ui.IWorkbenchPart; |
| |
| |
| /** |
| * Delete Action originating via keyboard using the 'Delete' hot/shortcut key |
| * |
| * @author bagrodia |
| * @canBeSeenBy org.eclipse.gmf.runtime.diagram.ui.* |
| * Created on Jun 30, 2004 |
| */ |
| public class PromptingDeleteAction |
| extends DeleteAction { |
| |
| |
| /** |
| * Constructs a <code>PromptingDeleteAction</code> using the specified part. |
| * @param part The part for this action |
| */ |
| public PromptingDeleteAction(IWorkbenchPart part) { |
| super(part); |
| } |
| |
| |
| |
| /** |
| * create a command for the passed list of objects |
| * @param objects objects to associate with the command |
| * @return <code>Command</code> |
| */ |
| |
| public Command createCommand(List objects) { |
| |
| if(objects.isEmpty()) return null; |
| |
| |
| /* Create the delete request */ |
| GroupRequestViaKeyboard deleteReq = |
| new GroupRequestViaKeyboard(RequestConstants.REQ_DELETE); |
| |
| deleteReq.setShowInformationDialog(DiagramUIPlugin.getInstance() |
| .getPreferenceStore().getBoolean( |
| IPreferenceConstants.PREF_PROMPT_ON_DEL_FROM_DIAGRAM)); |
| |
| CompoundCommand deleteCC = |
| new CompoundCommand(DiagramUIMessages.DeleteCommand_Label); |
| |
| |
| deleteReq.setShowInformationDialog(false); |
| boolean containsSemanticElement = false; |
| CompositeTransactionalCommand command = null; |
| TransactionalEditingDomain editingDomain = null; |
| for (int i = 0; i < objects.size(); i++) { |
| if(objects.get(i) instanceof EditPart){ |
| /* Get the next part */ |
| EditPart editPart = (EditPart) objects.get(i); |
| if (editPart instanceof IGraphicalEditPart){ |
| if (editingDomain == null) { |
| editingDomain = ((IGraphicalEditPart) editPart).getEditingDomain(); |
| } |
| if (!containsSemanticElement&& |
| ViewUtil.resolveSemanticElement((View)editPart.getModel()) != null){ |
| containsSemanticElement = true; |
| deleteReq.setShowInformationDialog(true); |
| } |
| } |
| |
| /* Send the request to the edit part */ |
| Command command2 = editPart.getCommand(deleteReq); |
| if (command2 != null && editingDomain != null) { |
| if (command == null) |
| command = new CompositeTransactionalCommand(editingDomain, command2.getLabel()); |
| command.compose(new CommandProxy(command2)); |
| } |
| } |
| } |
| |
| |
| if ((command != null)&&(command.size() > 0)) |
| deleteCC.add(new ICommandProxy(command)); |
| return deleteCC; |
| } |
| |
| |
| |
| /** |
| * This is by purpose set to true since there is no need to go to editpart |
| * and obtain commands. |
| * @see org.eclipse.gef.ui.actions.DeleteAction#calculateEnabled() |
| * |
| */ |
| protected boolean calculateEnabled() { |
| return true; |
| } |
| |
| public void run() { |
| TransactionalEditingDomain editingDomain = null; |
| for (Iterator iterator = getSelectedObjects().iterator(); iterator |
| .hasNext();) { |
| EditPart editPart = (EditPart) iterator.next(); |
| if (editPart instanceof IGraphicalEditPart) { |
| editingDomain = ((IGraphicalEditPart) editPart) |
| .getEditingDomain(); |
| break; |
| } |
| } |
| final Command command[] = new Command[1]; |
| AbstractEMFOperation operation = new AbstractEMFOperation( |
| editingDomain, DiagramUIMessages.DeleteCommand_Label) { |
| |
| protected IStatus doExecute(IProgressMonitor monitor, |
| IAdaptable info) |
| throws ExecutionException { |
| command[0] = createCommand(getSelectedObjects()); |
| return CommandResult.newOKCommandResult().getStatus(); |
| |
| } |
| |
| }; |
| try { |
| operation.execute(null, null); |
| } catch (ExecutionException e) { |
| // do nothing |
| } |
| |
| if (command[0] != null) |
| execute(command[0]); |
| } |
| |
| |
| } |