| /******************************************************************************* |
| * Copyright (c) 2000, 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.jface.text; |
| |
| import org.eclipse.core.runtime.Assert; |
| |
| |
| /** |
| * Specification of changes applied to documents. All changes are represented as |
| * replace commands, i.e. specifying a document range whose text gets replaced |
| * with different text. In addition to this information, the event also contains |
| * the changed document. |
| * |
| * @see org.eclipse.jface.text.IDocument |
| */ |
| public class DocumentEvent { |
| |
| /** |
| * Debug option for asserting that text is not null. |
| * If the <code>org.eclipse.text/debug/DocumentEvent/assertTextNotNull</code> |
| * system property is <code>true</code> |
| * |
| * @since 3.3 |
| */ |
| private static final boolean ASSERT_TEXT_NOT_NULL= Boolean.getBoolean("org.eclipse.text/debug/DocumentEvent/assertTextNotNull"); //$NON-NLS-1$ |
| |
| /** The changed document */ |
| public IDocument fDocument; |
| /** The document offset */ |
| public int fOffset; |
| /** Length of the replaced document text */ |
| public int fLength; |
| /** Text inserted into the document */ |
| public String fText= ""; //$NON-NLS-1$ |
| /** |
| * The modification stamp of the document when firing this event. |
| * @since 3.1 and public since 3.3 |
| */ |
| public long fModificationStamp; |
| |
| /** |
| * Creates a new document event. |
| * |
| * @param doc the changed document |
| * @param offset the offset of the replaced text |
| * @param length the length of the replaced text |
| * @param text the substitution text |
| */ |
| public DocumentEvent(IDocument doc, int offset, int length, String text) { |
| |
| Assert.isNotNull(doc); |
| Assert.isTrue(offset >= 0); |
| Assert.isTrue(length >= 0); |
| |
| if (ASSERT_TEXT_NOT_NULL) |
| Assert.isNotNull(text); |
| |
| fDocument= doc; |
| fOffset= offset; |
| fLength= length; |
| fText= text; |
| |
| if (fDocument instanceof IDocumentExtension4) |
| fModificationStamp= ((IDocumentExtension4)fDocument).getModificationStamp(); |
| else |
| fModificationStamp= IDocumentExtension4.UNKNOWN_MODIFICATION_STAMP; |
| } |
| |
| /** |
| * Creates a new, not initialized document event. |
| */ |
| public DocumentEvent() { |
| } |
| |
| /** |
| * Returns the changed document. |
| * |
| * @return the changed document |
| */ |
| public IDocument getDocument() { |
| return fDocument; |
| } |
| |
| /** |
| * Returns the offset of the change. |
| * |
| * @return the offset of the change |
| */ |
| public int getOffset() { |
| return fOffset; |
| } |
| |
| /** |
| * Returns the length of the replaced text. |
| * |
| * @return the length of the replaced text |
| */ |
| public int getLength() { |
| return fLength; |
| } |
| |
| /** |
| * Returns the text that has been inserted. |
| * |
| * @return the text that has been inserted |
| */ |
| public String getText() { |
| return fText; |
| } |
| |
| /** |
| * Returns the document's modification stamp at the |
| * time when this event was sent. |
| * |
| * @return the modification stamp or {@link IDocumentExtension4#UNKNOWN_MODIFICATION_STAMP}. |
| * @see IDocumentExtension4#getModificationStamp() |
| * @since 3.1 |
| */ |
| public long getModificationStamp() { |
| return fModificationStamp; |
| } |
| |
| /* |
| * @see java.lang.Object#toString() |
| * @since 3.4 |
| */ |
| public String toString() { |
| StringBuffer buffer= new StringBuffer(); |
| buffer.append("offset: " ); //$NON-NLS-1$ |
| buffer.append(fOffset); |
| buffer.append(", length: " ); //$NON-NLS-1$ |
| buffer.append(fLength); |
| buffer.append(", timestamp: " ); //$NON-NLS-1$ |
| buffer.append(fModificationStamp); |
| buffer.append("\ntext:>" ); //$NON-NLS-1$ |
| buffer.append(fText); |
| buffer.append("<\n" ); //$NON-NLS-1$ |
| return buffer.toString(); |
| } |
| } |