| /******************************************************************************* |
| * 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.List; |
| |
| import org.eclipse.draw2d.geometry.Dimension; |
| import org.eclipse.draw2d.geometry.Rectangle; |
| |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.commands.CompoundCommand; |
| import org.eclipse.gef.commands.UnexecutableCommand; |
| import org.eclipse.gef.editpolicies.TreeContainerEditPolicy; |
| 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.LogicSubpart; |
| import org.eclipse.gef.examples.logicdesigner.model.commands.CreateCommand; |
| import org.eclipse.gef.examples.logicdesigner.model.commands.ReorderPartCommand; |
| |
| public class LogicTreeContainerEditPolicy extends TreeContainerEditPolicy { |
| |
| protected Command createCreateCommand(LogicSubpart child, Rectangle r, |
| int index, String label) { |
| CreateCommand cmd = new CreateCommand(); |
| Rectangle rect; |
| if (r == null) { |
| rect = new Rectangle(); |
| rect.setSize(new Dimension(-1, -1)); |
| } else { |
| rect = r; |
| } |
| cmd.setLocation(rect); |
| cmd.setParent((LogicDiagram) getHost().getModel()); |
| cmd.setChild(child); |
| cmd.setLabel(label); |
| if (index >= 0) |
| cmd.setIndex(index); |
| return cmd; |
| } |
| |
| protected Command getAddCommand(ChangeBoundsRequest request) { |
| CompoundCommand command = new CompoundCommand(); |
| command.setDebugLabel("Add in LogicTreeContainerEditPolicy");//$NON-NLS-1$ |
| List editparts = request.getEditParts(); |
| int index = findIndexOfTreeItemAt(request.getLocation()); |
| |
| for (int i = 0; i < editparts.size(); i++) { |
| EditPart child = (EditPart) editparts.get(i); |
| if (isAncestor(child, getHost())) |
| command.add(UnexecutableCommand.INSTANCE); |
| else { |
| LogicSubpart childModel = (LogicSubpart) child.getModel(); |
| command.add(createCreateCommand(childModel, |
| new Rectangle(new org.eclipse.draw2d.geometry.Point(), |
| childModel.getSize()), index, |
| "Reparent LogicSubpart"));//$NON-NLS-1$ |
| } |
| } |
| return command; |
| } |
| |
| protected Command getCreateCommand(CreateRequest request) { |
| LogicSubpart child = (LogicSubpart) request.getNewObject(); |
| int index = findIndexOfTreeItemAt(request.getLocation()); |
| return createCreateCommand(child, null, index, "Create LogicSubpart");//$NON-NLS-1$ |
| } |
| |
| protected Command getMoveChildrenCommand(ChangeBoundsRequest request) { |
| CompoundCommand command = new CompoundCommand(); |
| List editparts = request.getEditParts(); |
| List children = getHost().getChildren(); |
| int newIndex = findIndexOfTreeItemAt(request.getLocation()); |
| |
| for (int i = 0; i < editparts.size(); i++) { |
| EditPart child = (EditPart) editparts.get(i); |
| int tempIndex = newIndex; |
| int oldIndex = children.indexOf(child); |
| if (oldIndex == tempIndex || oldIndex + 1 == tempIndex) { |
| command.add(UnexecutableCommand.INSTANCE); |
| return command; |
| } else if (oldIndex <= tempIndex) { |
| tempIndex--; |
| } |
| command.add(new ReorderPartCommand((LogicSubpart) child.getModel(), |
| (LogicDiagram) getHost().getModel(), tempIndex)); |
| } |
| return command; |
| } |
| |
| protected boolean isAncestor(EditPart source, EditPart target) { |
| if (source == target) |
| return true; |
| if (target.getParent() != null) |
| return isAncestor(source, target.getParent()); |
| return false; |
| } |
| |
| } |