| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.gef.examples.logicdesigner.edit; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.gef.EditPolicy; |
| import org.eclipse.gef.GraphicalEditPart; |
| import org.eclipse.gef.RequestConstants; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.requests.ChangeBoundsRequest; |
| import org.eclipse.gef.requests.CreateRequest; |
| |
| import org.eclipse.gef.examples.logicdesigner.model.LogicDiagram; |
| import org.eclipse.gef.examples.logicdesigner.model.LogicFlowContainer; |
| import org.eclipse.gef.examples.logicdesigner.model.LogicSubpart; |
| import org.eclipse.gef.examples.logicdesigner.model.commands.AddCommand; |
| import org.eclipse.gef.examples.logicdesigner.model.commands.CloneCommand; |
| import org.eclipse.gef.examples.logicdesigner.model.commands.CreateCommand; |
| import org.eclipse.gef.examples.logicdesigner.model.commands.ReorderPartCommand; |
| |
| public class LogicFlowEditPolicy extends |
| org.eclipse.gef.editpolicies.FlowLayoutEditPolicy { |
| |
| /** |
| * Override to return the <code>Command</code> to perform an |
| * {@link RequestConstants#REQ_CLONE CLONE}. By default, <code>null</code> |
| * is returned. |
| * |
| * @param request |
| * the Clone Request |
| * @return A command to perform the Clone. |
| */ |
| protected Command getCloneCommand(ChangeBoundsRequest request) { |
| CloneCommand clone = new CloneCommand(); |
| clone.setParent((LogicDiagram) getHost().getModel()); |
| |
| EditPart after = getInsertionReference(request); |
| int index = getHost().getChildren().indexOf(after); |
| |
| Iterator i = request.getEditParts().iterator(); |
| GraphicalEditPart currPart = null; |
| |
| while (i.hasNext()) { |
| currPart = (GraphicalEditPart) i.next(); |
| clone.addPart((LogicSubpart) currPart.getModel(), index++); |
| } |
| |
| return clone; |
| } |
| |
| protected Command createAddCommand(EditPart child, EditPart after) { |
| AddCommand command = new AddCommand(); |
| command.setChild((LogicSubpart) child.getModel()); |
| command.setParent((LogicFlowContainer) getHost().getModel()); |
| int index = getHost().getChildren().indexOf(after); |
| command.setIndex(index); |
| return command; |
| } |
| |
| /** |
| * @see org.eclipse.gef.editpolicies.LayoutEditPolicy#createChildEditPolicy(org.eclipse.gef.EditPart) |
| */ |
| protected EditPolicy createChildEditPolicy(EditPart child) { |
| LogicResizableEditPolicy policy = new LogicResizableEditPolicy(); |
| policy.setResizeDirections(0); |
| return policy; |
| } |
| |
| protected Command createMoveChildCommand(EditPart child, EditPart after) { |
| LogicSubpart childModel = (LogicSubpart) child.getModel(); |
| LogicDiagram parentModel = (LogicDiagram) getHost().getModel(); |
| int oldIndex = getHost().getChildren().indexOf(child); |
| int newIndex = getHost().getChildren().indexOf(after); |
| if (newIndex > oldIndex) |
| newIndex--; |
| ReorderPartCommand command = new ReorderPartCommand(childModel, |
| parentModel, newIndex); |
| return command; |
| } |
| |
| protected Command getCreateCommand(CreateRequest request) { |
| CreateCommand command = new CreateCommand(); |
| EditPart after = getInsertionReference(request); |
| command.setChild((LogicSubpart) request.getNewObject()); |
| command.setParent((LogicFlowContainer) getHost().getModel()); |
| int index = getHost().getChildren().indexOf(after); |
| command.setIndex(index); |
| return command; |
| } |
| |
| } |