| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ltk.internal.ui.refactoring; |
| |
| import org.eclipse.core.runtime.CoreException; |
| |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.util.Assert; |
| |
| import org.eclipse.ltk.core.refactoring.Change; |
| import org.eclipse.ltk.core.refactoring.TextChange; |
| import org.eclipse.ltk.core.refactoring.TextEditChangeGroup; |
| import org.eclipse.ltk.ui.refactoring.ChangePreviewViewerInput; |
| import org.eclipse.ltk.ui.refactoring.IChangePreviewViewer; |
| |
| /* package */ class TextEditChangeElement extends ChangeElement { |
| |
| private static final ChangeElement[] fgChildren= new ChangeElement[0]; |
| |
| private TextEditChangeGroup fChangeGroup; |
| |
| public TextEditChangeElement(ChangeElement parent, TextEditChangeGroup changeGroup) { |
| super(parent); |
| fChangeGroup= changeGroup; |
| Assert.isNotNull(fChangeGroup); |
| } |
| |
| /** |
| * Returns the <code>TextEditChange</code> managed by this node. |
| * |
| * @return the <code>TextEditChange</code> |
| */ |
| public TextEditChangeGroup getTextEditChange() { |
| return fChangeGroup; |
| } |
| |
| public Change getChange() { |
| return null; |
| } |
| |
| public ChangePreviewViewerDescriptor getChangePreviewViewerDescriptor() throws CoreException { |
| DefaultChangeElement element= getDefaultChangeElement(); |
| if (element == null) |
| return null; |
| return element.getChangePreviewViewerDescriptor(); |
| } |
| |
| public void feedInput(IChangePreviewViewer viewer) throws CoreException { |
| DefaultChangeElement element= getDefaultChangeElement(); |
| if (element != null) { |
| Change change= element.getChange(); |
| if (change instanceof TextChange) { |
| IRegion range= getTextRange(this); |
| ChangePreviewViewerInput input= null; |
| if (range != null) { |
| input= TextChangePreviewViewer.createInput(change, new TextEditChangeGroup[] {fChangeGroup}, range); |
| } else { |
| input= TextChangePreviewViewer.createInput(change, fChangeGroup, 2); |
| } |
| viewer.setInput(input); |
| } |
| } else { |
| viewer.setInput(null); |
| } |
| } |
| |
| /* non Java-doc |
| * @see ChangeElement#setActive |
| */ |
| public void setActive(boolean active) { |
| fChangeGroup.setEnabled(active); |
| } |
| |
| /* non Java-doc |
| * @see ChangeElement.getActive |
| */ |
| public int getActive() { |
| return fChangeGroup.isEnabled() ? ACTIVE : INACTIVE; |
| } |
| |
| /* non Java-doc |
| * @see ChangeElement.getChildren |
| */ |
| public ChangeElement[] getChildren() { |
| return fgChildren; |
| } |
| |
| private DefaultChangeElement getDefaultChangeElement() { |
| ChangeElement element= getParent(); |
| while(!(element instanceof DefaultChangeElement) && element != null) { |
| element= element.getParent(); |
| } |
| return (DefaultChangeElement)element; |
| } |
| |
| private static IRegion getTextRange(ChangeElement element) throws CoreException { |
| if (element == null) |
| return null; |
| if (element instanceof PseudoJavaChangeElement) { |
| return ((PseudoJavaChangeElement)element).getTextRange(); |
| } else if (element instanceof DefaultChangeElement) { |
| return null; |
| } |
| return getTextRange(element.getParent()); |
| } |
| } |
| |