    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    }