| /******************************************************************************* |
| * Copyright (c) 2005, 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 |
| * |
| *******************************************************************************/ |
| |
| package org.eclipse.wst.xml.ui.internal.selection; |
| |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.text.Region; |
| import org.eclipse.jface.text.TextSelection; |
| import org.eclipse.wst.sse.core.internal.provisional.IndexedRegion; |
| import org.eclipse.wst.sse.ui.internal.selection.StructuredSelectActionDelegate; |
| import org.eclipse.wst.xml.ui.internal.XMLUIMessages; |
| import org.w3c.dom.Node; |
| |
| public class StructuredSelectPreviousXMLActionDelegate extends StructuredSelectActionDelegate { |
| |
| protected IndexedRegion getCursorIndexedRegion(IDocument document, ITextSelection textSelection) { |
| IndexedRegion indexedRegion = null; |
| |
| indexedRegion = getIndexedRegion(document, textSelection.getOffset()); |
| |
| return indexedRegion; |
| } |
| |
| protected Region getNewSelectionRegion(IndexedRegion indexedRegion, ITextSelection textSelection) { |
| Region newRegion = null; |
| if (indexedRegion instanceof Node) { |
| Node cursorNode = (Node) indexedRegion; |
| |
| // use parent node for empty text node |
| if ((cursorNode.getNodeType() == Node.TEXT_NODE) && (cursorNode.getNodeValue().trim().length() == 0)) { |
| cursorNode = cursorNode.getParentNode(); |
| |
| if (cursorNode instanceof IndexedRegion) { |
| indexedRegion = (IndexedRegion) cursorNode; |
| } |
| } |
| |
| Region cursorNodeRegion = new Region(indexedRegion.getStartOffset(), indexedRegion.getEndOffset() - indexedRegion.getStartOffset()); |
| |
| if ((cursorNodeRegion.getOffset() >= textSelection.getOffset()) && (cursorNodeRegion.getOffset() <= textSelection.getOffset() + textSelection.getLength()) && (cursorNodeRegion.getOffset() + cursorNodeRegion.getLength() >= textSelection.getOffset()) && (cursorNodeRegion.getOffset() + cursorNodeRegion.getLength() <= textSelection.getOffset() + textSelection.getLength())) { |
| Node newNode = cursorNode.getPreviousSibling(); |
| if (newNode == null) { |
| newNode = cursorNode.getParentNode(); |
| |
| if (newNode instanceof IndexedRegion) { |
| IndexedRegion newIndexedRegion = (IndexedRegion) newNode; |
| newRegion = new Region(newIndexedRegion.getStartOffset(), newIndexedRegion.getEndOffset() - newIndexedRegion.getStartOffset()); |
| } |
| } |
| else { |
| if (newNode instanceof IndexedRegion) { |
| IndexedRegion newIndexedRegion = (IndexedRegion) newNode; |
| newRegion = new Region(newIndexedRegion.getStartOffset(), textSelection.getOffset() + textSelection.getLength() - newIndexedRegion.getStartOffset()); |
| |
| if (newNode.getNodeType() == Node.TEXT_NODE) { |
| newRegion = getNewSelectionRegion(newIndexedRegion, new TextSelection(newRegion.getOffset(), newRegion.getLength())); |
| } |
| } |
| } |
| |
| } |
| else { |
| newRegion = cursorNodeRegion; |
| } |
| } |
| return newRegion; |
| } |
| |
| public void init(IAction action) { |
| if (action != null) { |
| action.setText(XMLUIMessages.StructureSelectPrevious_label); |
| action.setToolTipText(XMLUIMessages.StructureSelectPrevious_tooltip); |
| action.setDescription(XMLUIMessages.StructureSelectPrevious_description); |
| } |
| } |
| |
| } |