| /******************************************************************************* |
| * Copyright (c) 2005, 2006 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.ltk.ui.refactoring.model; |
| |
| import org.eclipse.team.core.diff.IDiff; |
| import org.eclipse.team.core.diff.IThreeWayDiff; |
| import org.eclipse.team.ui.mapping.SynchronizationLabelProvider; |
| |
| import org.eclipse.ltk.core.refactoring.RefactoringDescriptorProxy; |
| import org.eclipse.ltk.core.refactoring.history.RefactoringHistory; |
| |
| import org.eclipse.ltk.internal.ui.refactoring.model.RefactoringDescriptorDiff; |
| import org.eclipse.ltk.internal.ui.refactoring.model.RefactoringDescriptorSynchronizationProxy; |
| import org.eclipse.ltk.internal.ui.refactoring.model.RefactoringHistoryDiff; |
| |
| /** |
| * Partial implementation of a refactoring-aware synchronization label provider. |
| * <p> |
| * This class overrides several methods from |
| * {@link SynchronizationLabelProvider} to customize the rendering of |
| * refactoring history objects in team synchronization views. |
| * </p> |
| * <p> |
| * Note: this class is designed to be extended by clients. Programming language |
| * implementers who need refactoring support in a synchronization label provider |
| * used in team synchronization views may use this class as a basis for |
| * refactoring-aware synchronization label providers. |
| * </p> |
| * |
| * @see org.eclipse.team.ui.mapping.SynchronizationLabelProvider |
| * |
| * @since 3.2 |
| */ |
| public abstract class AbstractSynchronizationLabelProvider extends SynchronizationLabelProvider { |
| |
| /** |
| * {@inheritDoc} |
| */ |
| protected String decorateText(final String base, final Object element) { |
| if (element instanceof RefactoringDescriptorProxy) |
| return base; |
| return super.decorateText(base, element); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| protected IDiff getDiff(final Object element) { |
| if (element instanceof RefactoringDescriptorProxy) |
| return new RefactoringDescriptorDiff((RefactoringDescriptorProxy) element, getKind(element), getDirection(element)); |
| else if (element instanceof RefactoringHistory) |
| return new RefactoringHistoryDiff((RefactoringHistory) element, getKind(element), getDirection(element)); |
| return super.getDiff(element); |
| } |
| |
| /** |
| * Returns the direction of the difference of the specified refactoring |
| * history object. |
| * <p> |
| * The result of this method is used to compose an icon which reflects the |
| * direction of the difference between the two or three versions of the |
| * refactoring history object. |
| * </p> |
| * |
| * @param element |
| * the refactoring history object |
| * @return the direction of the difference |
| * |
| * @see IThreeWayDiff#getDirection() |
| */ |
| protected int getDirection(Object element) { |
| if (element instanceof RefactoringHistory) { |
| final RefactoringHistory history= (RefactoringHistory) element; |
| final RefactoringDescriptorProxy[] descriptors= history.getDescriptors(); |
| int direction= 0; |
| if (descriptors.length > 0) { |
| if (descriptors[0] instanceof RefactoringDescriptorSynchronizationProxy) { |
| final RefactoringDescriptorSynchronizationProxy proxy= (RefactoringDescriptorSynchronizationProxy) descriptors[0]; |
| direction= proxy.getDirection(); |
| } |
| } |
| for (int index= 1; index < descriptors.length; index++) { |
| if (descriptors[index] instanceof RefactoringDescriptorSynchronizationProxy) { |
| final RefactoringDescriptorSynchronizationProxy proxy= (RefactoringDescriptorSynchronizationProxy) descriptors[index]; |
| if (proxy.getDirection() != direction) |
| return IThreeWayDiff.CONFLICTING; |
| } |
| } |
| return IDiff.NO_CHANGE; |
| } else if (element instanceof RefactoringDescriptorSynchronizationProxy) { |
| final RefactoringDescriptorSynchronizationProxy proxy= (RefactoringDescriptorSynchronizationProxy) element; |
| return proxy.getDirection(); |
| } |
| return IThreeWayDiff.CONFLICTING; |
| } |
| |
| /** |
| * Returns the kind of difference between the three sides ancestor, left and |
| * right of the specified refactoring history object. |
| * <p> |
| * The result of this method is used to compose an icon which reflects the |
| * kind of difference between the two or three versions of the refactoring |
| * history object. |
| * </p> |
| * |
| * @param element |
| * the refactoring history object |
| * @return the kind of difference |
| * |
| * @see IDiff#getKind() |
| */ |
| protected int getKind(Object element) { |
| if (element instanceof RefactoringHistory) |
| return IDiff.CHANGE; |
| return IDiff.ADD; |
| } |
| } |