001/* 002 * (C) Copyright 2006-2008 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Alexandre Russel 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.ecm.platform.annotations.gwt.client.view.annotater; 021 022import org.nuxeo.ecm.platform.annotations.gwt.client.controler.AnnotationController; 023import org.nuxeo.ecm.platform.annotations.gwt.client.model.Annotation; 024import org.nuxeo.ecm.platform.annotations.gwt.client.model.Container; 025import org.nuxeo.ecm.platform.annotations.gwt.client.util.Range; 026import org.nuxeo.ecm.platform.annotations.gwt.client.util.Utils; 027import org.nuxeo.ecm.platform.annotations.gwt.client.util.XPathUtil; 028import org.nuxeo.ecm.platform.annotations.gwt.client.view.NewAnnotationPopup; 029 030import com.allen_sauer.gwt.log.client.Log; 031import com.google.gwt.dom.client.Document; 032import com.google.gwt.dom.client.Element; 033import com.google.gwt.dom.client.Node; 034import com.google.gwt.dom.client.Text; 035import com.google.gwt.user.client.Event; 036 037/** 038 * @author <a href="mailto:arussel@nuxeo.com">Alexandre Russel</a> 039 */ 040public class TextAnnotater extends AbstractAnnotater { 041 042 private final XPathUtil xpathUtil = new XPathUtil(); 043 044 public TextAnnotater(AnnotationController controller) { 045 super(controller, false); 046 } 047 048 @Override 049 public void onMouseUp(Event event) { 050 Log.debug("TextAnnotater#onMouseUp; eventId= " + event.getType() + "; source: " + event.getCurrentTarget()); 051 Range currentRange = Utils.getCurrentRange(Document.get()); 052 if (currentRange != null && currentRange.getSelectedText().length() != 0) { 053 Element startElement = Element.as(currentRange.getStartContainer()); 054 String pointer = xpathUtil.getSelectionXPointer(currentRange); 055 controller.createNewAnnotation(pointer); 056 057 Container startContainer = getStartContainer(currentRange); 058 Container endContainer = getEndContainer(currentRange); 059 060 Annotation annotation = controller.getNewAnnotation(); 061 annotation.setStartContainer(startContainer); 062 annotation.setEndContainer(endContainer); 063 064 NewAnnotationPopup popup = new NewAnnotationPopup(startElement, controller, false, "local"); 065 controller.setNewAnnotationPopup(popup); 066 addAnnotationPopup(); 067 } else { 068 controller.setNewAnnotationPopup(null); 069 } 070 071 super.onMouseUp(event); 072 } 073 074 private Container getStartContainer(Range range) { 075 Node startNode = range.getStartContainer(); 076 int startOffset = range.getStartOffset(); 077 // Window.alert("startOffset: " + startOffset); 078 startOffset = computeNewOffset(startNode, startOffset); 079 // Window.alert("startOffset after compute: " + startOffset); 080 081 if (startNode.getNodeType() == Node.TEXT_NODE) { 082 return getCustomContainer(startNode, startOffset); 083 } 084 return new Container(xpathUtil.getXPath(startNode), startOffset); 085 } 086 087 private Container getCustomContainer(Node node, int currentOffset) { 088 int offset = 0; 089 Node n = node.getPreviousSibling(); 090 while (n != null) { 091 if (n.getNodeType() == Node.TEXT_NODE) { 092 Text text = (Text) n; 093 offset += text.getLength(); 094 } else if (n.getNodeType() == Node.ELEMENT_NODE) { 095 Element ele = (Element) n; 096 offset += ele.getInnerText().length(); 097 } 098 n = n.getPreviousSibling(); 099 } 100 node = node.getParentNode(); 101 currentOffset += offset; 102 return new Container(xpathUtil.getXPath(node), currentOffset); 103 } 104 105 private static int computeNewOffset(Node node, int currentOffset) { 106 if (currentOffset <= 0) { 107 return currentOffset; 108 } 109 int difference = 0; 110 String text = node.getNodeValue(); 111 if (text != null) { 112 text = text.substring(0, currentOffset); 113 String processedText = Utils.removeWhitespaces(text, node, true); 114 difference = text.length() - processedText.length(); 115 } 116 return currentOffset - difference; 117 } 118 119 private Container getEndContainer(Range range) { 120 Node endNode = range.getEndContainer(); 121 int endOffset = range.getEndOffset(); 122 endOffset = computeNewOffset(endNode, endOffset); 123 124 if (endNode.getNodeType() == Node.TEXT_NODE) { 125 return getCustomContainer(endNode, endOffset); 126 } 127 128 return new Container(xpathUtil.getXPath(endNode), endOffset); 129 } 130 131}