| /******************************************************************************* |
| * Copyright (c) 2001, 2004 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 |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.sse.core.internal.provisional.events; |
| |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument; |
| |
| /** |
| * This event is sent if, after analysis, it is found there is no reason to |
| * change the structuredDocument. This might occur, for example, if someone |
| * pastes in the exact same text that they are replacing, or if someone tries |
| * to change a read-only region. |
| * |
| * This might be important, for example, if some state variables are set on an |
| * "about the change" event. then if there is no change (i.e.no other event is |
| * fired), those state variables could reset, or whatever, upon receiving this |
| * event. |
| * |
| * @plannedfor 1.0 |
| */ |
| public class NoChangeEvent extends StructuredDocumentEvent { |
| /** |
| * NO_CONTENT_CHANGE means that a some text was requested to be replaced |
| * with identical text, so no change is actually done. |
| */ |
| public final static int NO_CONTENT_CHANGE = 2; |
| /** |
| * NO_EVENT is used in rare error conditions, when, basically, a request |
| * to change the document is made before the previous request has |
| * completed. This event to used so aboutToChange/Changed cycles can |
| * complete as required, but the document is most likely not modified as |
| * expected. |
| */ |
| public final static int NO_EVENT = 8; |
| /** |
| * READ_ONLY_STATE_CHANGE means that the "read only" state of the text was |
| * changed, not the content itself. |
| */ |
| public final static int READ_ONLY_STATE_CHANGE = 4; |
| |
| /** |
| * set to one of the above detailed reasons for why no change was done. |
| */ |
| public int reason = 0; |
| |
| /** |
| * NoChangeEvent constructor. This event can occur if there was a request |
| * to modify a document or its properties, but there as not really is no |
| * change to a document's content. |
| * |
| * @param source |
| * @param originalSource |
| * java.lang.Object |
| * @param changes |
| * java.lang.String |
| * @param offset |
| * int |
| * @param lengthToReplace |
| * int |
| */ |
| public NoChangeEvent(IStructuredDocument source, Object originalSource, String changes, int offset, int lengthToReplace) { |
| super(source, originalSource, changes, offset, lengthToReplace); |
| } |
| } |