| /******************************************************************************* |
| * Copyright (c) 2007, 2008 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.wst.jsdt.web.core.javascript; |
| |
| import org.eclipse.jface.text.DocumentEvent; |
| import org.eclipse.jface.text.IDocumentListener; |
| import org.eclipse.text.edits.DeleteEdit; |
| import org.eclipse.text.edits.InsertEdit; |
| import org.eclipse.text.edits.MultiTextEdit; |
| import org.eclipse.text.edits.ReplaceEdit; |
| |
| /** |
| * |
| |
| * Provisional API: This class/interface is part of an interim API that is still under development and expected to |
| * change significantly before reaching stability. It is being made available at this early stage to solicit feedback |
| * from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken |
| * (repeatedly) as the API evolves. |
| * <br><br> |
| * |
| * this class attaches to a "cloned" document, listens for changes to that document then translates |
| * the changes to text edits. these changes can then be applied back to the original document. |
| * |
| * |
| */ |
| public class DocumentChangeListenerToTextEdit implements IDocumentListener { |
| private MultiTextEdit textEdit; |
| |
| public DocumentChangeListenerToTextEdit() { |
| textEdit = new MultiTextEdit(); |
| } |
| |
| public void documentAboutToBeChanged(DocumentEvent event) { |
| // System.out.println("Unimplemented |
| // method:DocumentChangeListenerToTextEdit.documentAboutToBeChanged"); |
| } |
| |
| public void documentChanged(DocumentEvent event) { |
| int length = event.getLength(); |
| int offset = event.getOffset(); |
| String text = event.getText(); |
| if (length < 0) { |
| return; |
| } |
| if (length == 0) { |
| /* inserting text operation */ |
| InsertEdit edit = new InsertEdit(offset, text); |
| textEdit.addChild(edit); |
| |
| } else if (text == null || text.equals("")) { //$NON-NLS-1$ |
| /* delete operation */ |
| DeleteEdit edit = new DeleteEdit(offset, length); |
| textEdit.addChild(edit); |
| |
| } else if (length > 0) { |
| /* replace text operation */ |
| ReplaceEdit edit = new ReplaceEdit(offset, length, text); |
| textEdit.addChild(edit); |
| |
| } |
| } |
| |
| public MultiTextEdit getTextEdits() { |
| return textEdit; |
| } |
| } |