| /******************************************************************************* |
| * Copyright (c) 2000, 2011 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.jdt.internal.ui.text.java; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.Region; |
| |
| |
| /** |
| * Provides the inherited double click behavior and allows <code>@identifier</code> to be selected. |
| * |
| * @since 3.1 |
| */ |
| public class JavadocDoubleClickStrategy extends PartitionDoubleClickSelector { |
| |
| |
| public JavadocDoubleClickStrategy(String partitioning) { |
| super(partitioning, 0, 0); |
| } |
| |
| /** |
| * Returns a region describing the word around <code>position</code>. |
| * |
| * @param document the document |
| * @param position the offset around which to return the word |
| * @return the word's region, or <code>null</code> for no selection |
| */ |
| @Override |
| protected IRegion findExtendedDoubleClickSelection(IDocument document, int position) { |
| try { |
| IRegion match= super.findExtendedDoubleClickSelection(document, position); |
| if (match != null) |
| return match; |
| |
| IRegion word= findWord(document, position); |
| |
| IRegion line= document.getLineInformationOfOffset(position); |
| if (position == line.getOffset() + line.getLength()) |
| return null; |
| |
| int start= word.getOffset(); |
| int end= start + word.getLength(); |
| |
| if (start > 0 && document.getChar(start - 1) == '@' && Character.isJavaIdentifierPart(document.getChar(start)) |
| && (start == 1 || Character.isWhitespace(document.getChar(start - 2)) || document.getChar(start - 2) == '{')) { |
| // double click after @ident |
| start--; |
| } else if (end == position && end == start + 1 && end < line.getOffset() + line.getLength() && document.getChar(end) == '@') { |
| // double click before " @ident" |
| return findExtendedDoubleClickSelection(document, position + 1); |
| } |
| |
| if (start == end) |
| return null; |
| return new Region(start, end - start); |
| |
| } catch (BadLocationException x) { |
| return null; |
| } |
| } |
| |
| } |