| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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.ui.texteditor; |
| |
| import org.eclipse.core.resources.IMarker; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.Position; |
| |
| |
| /** |
| * Updates a marker's positional attributes which are |
| * start position, end position, and line number. |
| */ |
| public final class BasicMarkerUpdater implements IMarkerUpdater { |
| |
| private final static String[] ATTRIBUTES= { |
| IMarker.CHAR_START, |
| IMarker.CHAR_END, |
| IMarker.LINE_NUMBER |
| }; |
| |
| /** |
| * Creates a new basic marker updater. |
| */ |
| public BasicMarkerUpdater() { |
| super(); |
| } |
| |
| /* |
| * @see IMarkerUpdater#getAttribute() |
| */ |
| public String[] getAttribute() { |
| return ATTRIBUTES; |
| } |
| |
| /* |
| * @see IMarkerUpdater#getMarkerType() |
| */ |
| public String getMarkerType() { |
| return null; |
| } |
| |
| /* |
| * @see IMarkerUpdater#updateMarker(IMarker, IDocument, Position) |
| */ |
| public boolean updateMarker(IMarker marker, IDocument document, Position position) { |
| |
| if (position == null) |
| return true; |
| |
| if (position.isDeleted()) |
| return false; |
| |
| boolean offsetsInitialized= false; |
| boolean offsetsChanged= false; |
| int markerStart= MarkerUtilities.getCharStart(marker); |
| int markerEnd= MarkerUtilities.getCharEnd(marker); |
| |
| if (markerStart != -1 && markerEnd != -1) { |
| |
| offsetsInitialized= true; |
| |
| int offset= position.getOffset(); |
| if (markerStart != offset) { |
| MarkerUtilities.setCharStart(marker, offset); |
| offsetsChanged= true; |
| } |
| |
| offset += position.getLength(); |
| if (markerEnd != offset) { |
| MarkerUtilities.setCharEnd(marker, offset); |
| offsetsChanged= true; |
| } |
| } |
| |
| if (!offsetsInitialized || (offsetsChanged && MarkerUtilities.getLineNumber(marker) != -1)) { |
| try { |
| // marker line numbers are 1-based |
| MarkerUtilities.setLineNumber(marker, document.getLineOfOffset(position.getOffset()) + 1); |
| } catch (BadLocationException x) { |
| } |
| } |
| |
| return true; |
| } |
| } |