| /******************************************************************************* |
| * Copyright (c) 2001, 2006 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.ui.internal.taginfo; |
| |
| |
| |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextHover; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.ITypedRegion; |
| |
| /** |
| * Provides debug hover help |
| * |
| * @see org.eclipse.jface.text.ITextHover |
| */ |
| public class DebugInfoHoverProcessor extends AbstractHoverProcessor { |
| public static final String TRACEFILTER = "debuginfohover"; //$NON-NLS-1$ |
| protected IPreferenceStore fPreferenceStore = null; |
| |
| public DebugInfoHoverProcessor() { |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.text.ITextHover#getHoverInfo(org.eclipse.jface.text.ITextViewer, |
| * org.eclipse.jface.text.IRegion) |
| */ |
| public String getHoverInfo(ITextViewer viewer, IRegion hoverRegion) { |
| String displayText = null; |
| if ((hoverRegion == null) || (viewer == null) || (viewer.getDocument() == null)) { |
| displayText = null; |
| } |
| else { |
| int offset = hoverRegion.getOffset(); |
| |
| ITypedRegion region; |
| try { |
| region = viewer.getDocument().getPartition(offset); |
| if (region != null) { |
| displayText = region.getType(); |
| } |
| else { |
| displayText = "Null Region was returned?!"; //$NON-NLS-1$ |
| } |
| } |
| catch (BadLocationException e) { |
| displayText = "BadLocationException Occurred!?"; //$NON-NLS-1$ |
| } |
| |
| } |
| return displayText; |
| } |
| |
| /** |
| * Returns the region to hover the text over based on the offset. |
| * |
| * @param textViewer |
| * @param offset |
| * |
| * @return IRegion region to hover over if offset is not over invalid |
| * whitespace. otherwise, returns <code>null</code> |
| * |
| * @see ITextHover#getHoverRegion(ITextViewer, int) |
| */ |
| public IRegion getHoverRegion(ITextViewer textViewer, int offset) { |
| ITypedRegion region = null; |
| if ((textViewer == null) || (textViewer.getDocument() == null)) { |
| region = null; |
| } |
| else { |
| |
| try { |
| region = textViewer.getDocument().getPartition(offset); |
| } |
| catch (BadLocationException e) { |
| region = null; |
| } |
| } |
| return region; |
| } |
| } |