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/**
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* Copyright (C) 2018 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.format;
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import java.util.LinkedList;
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import java.util.StringTokenizer;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import org.apache.commons.lang3.StringUtils;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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/**
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* @author a.kohlbecker
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* @since Dec 14, 2018
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*/
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public abstract class AbstractEllypsisFormatter<T extends CdmBase> implements EllypsisFormatter<T> {
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protected static final String DELIM = " ";
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protected String MORE = " \u2026";
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@Override
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public String ellypsis(T entity, String preserveString) {
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EllipsisData ed = entityEllypsis(entity, preserveString);
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String label = ed.truncated;
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return label;
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}
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protected abstract EllipsisData entityEllypsis(T entity, String filterString);
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protected String stringEllypsis(String text, int maxCharsVisible, int minNumOfWords) {
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if(text.length() < maxCharsVisible){
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return text;
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}
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String ellipsedText = "";
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StringTokenizer tokenizer = new StringTokenizer(text, DELIM);
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int wordCount = 0;
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while(tokenizer.hasMoreElements()){
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String token = tokenizer.nextToken();
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if(ellipsedText.length() + token.length() + DELIM.length() <= maxCharsVisible || wordCount < minNumOfWords){
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ellipsedText = ellipsedText + (ellipsedText.isEmpty() ? "" : DELIM) + token;
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} else {
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break;
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}
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wordCount++;
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}
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return ellipsedText + MORE;
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}
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protected String preserveString(String preserveString, String text, Pattern pattern, String textEllipsed) {
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String matchingSubstring = null;
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if(!preserveString.isEmpty()){
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Matcher m = pattern.matcher(text);
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if(m.find()){
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matchingSubstring = m.group(1);
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}
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}
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if(matchingSubstring != null && !textEllipsed.toLowerCase().contains(preserveString)){
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textEllipsed += matchingSubstring + MORE;
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}
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return textEllipsed;
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}
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protected boolean isEllypsis(String label) {
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return label.contains(MORE);
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}
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protected String titleCacheOnlyEllypsis(String titleCache, int maxCharsVisible, int minNumOfWords) {
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// tokens = titleCache.split("\\s");
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String head = titleCache.substring(0, Math.round(titleCache.length() / 2));
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String tail = titleCache.substring(Math.round(titleCache.length() / 2), titleCache.length());
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head = stringEllypsis(head, maxCharsVisible, minNumOfWords);
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tail = stringEllypsis(StringUtils.reverse(tail), maxCharsVisible, minNumOfWords).replace(MORE, "");
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return head + StringUtils.reverse(tail);
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}
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public void applyAndSplit(LinkedList<EllipsisData> edList, String textpart, String textpartEllypsis) {
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// apply on last element in list
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EllipsisData last = edList.getLast();
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int pos1 = last.original.indexOf(textpart);
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if(pos1 > -1){
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if(pos1 > 0){
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String textPartBefore = last.original.substring(0, pos1);
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if(textPartBefore.matches(".*\\w+.*")){ // eliminate non word clutter
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edList.add(edList.size() - 1, new EllipsisData(textPartBefore, null)); // to be processed later
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}
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}
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edList.add(edList.size() - 1, new EllipsisData(textpart, textpartEllypsis));
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// replace the original with the part which comes after the matching textpart
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String newOriginal = last.original.substring(pos1 + textpart.length());
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last.original = newOriginal;
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if(StringUtils.isEmpty(last.original)){
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edList.removeLast();
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}
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}
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}
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public static class EllipsisData {
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public String original;
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public String truncated;
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public EllipsisData(String original, String truncated) {
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super();
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this.original = original;
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this.truncated = truncated;
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}
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}
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}
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