001 // This file is part of the Attempto Java Packages. 002 // Copyright 2008, Attempto Group, University of Zurich (see http://attempto.ifi.uzh.ch). 003 // 004 // The Attempto Java Packages is free software: you can redistribute it and/or modify it under the 005 // terms of the GNU Lesser General Public License as published by the Free Software Foundation, 006 // either version 3 of the License, or (at your option) any later version. 007 // 008 // The Attempto Java Packages is distributed in the hope that it will be useful, but WITHOUT ANY 009 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 010 // PURPOSE. See the GNU Lesser General Public License for more details. 011 // 012 // You should have received a copy of the GNU Lesser General Public License along with the Attempto 013 // Java Packages. If not, see http://www.gnu.org/licenses/. 014 015 package ch.uzh.ifi.attempto.preditor.text; 016 017 /** 018 * This class represents a text element that is a reference to a preceding text element. 019 * 020 * @see RefableTextElement 021 * @author Tobias Kuhn 022 */ 023 public class RefTextElement implements TextElement { 024 025 private RefableTextElement refableTextElement; 026 private String category; 027 private boolean sentenceInitial = false; 028 029 /** 030 * Creates a new reference text element that refers to the given referenceable text element. 031 * 032 * @param refableTextElement The referenceable text element occurring earlier in the text. 033 * @param category The category of the reference text element. 034 */ 035 public RefTextElement(RefableTextElement refableTextElement, String category) { 036 this.refableTextElement = refableTextElement; 037 this.category = category; 038 } 039 040 public String getText() { 041 String t = refableTextElement.getReferenceText(); 042 if (sentenceInitial) { 043 return t.substring(0, 1).toUpperCase() + t.substring(1); 044 } else { 045 return t; 046 } 047 } 048 049 public String getCategory() { 050 return category; 051 } 052 053 public void checkNeighborTextElements(TextElement precedingTextElement, TextElement nextTextElement) { 054 sentenceInitial = (precedingTextElement == null || precedingTextElement.getText().matches("(\\.|\\?|\\!)")); 055 } 056 057 public boolean equals(Object obj) { 058 if (obj instanceof RefTextElement) { 059 RefTextElement other = (RefTextElement) obj; 060 return (this.refableTextElement == other.refableTextElement); 061 } 062 return false; 063 } 064 065 }