LabelExtended.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package  org.turro.zkoss.label;
 
import java.util.Date;
import org.turro.elephant.util.DateFormats;
import org.turro.elephant.util.DecimalFormats;
import org.turro.i18n.I_;
import org.zkoss.zul.Label;
 
public class LabelExtended extends Label {
 
  private boolean showTooltip = false;
  private int maxChars = 0, wordWrap = 0;
  private String format;
 
//  @Override
//  public String getEncodedText() {
//    String value = super.getValue();
//    setValue(Application.getString(value));
//    return super.getEncodedText();
//  }
 
  public LabelExtended setFormat(String format) {
    this.format = format;
    return this;
  }
 
  public int getMaxChars() {
    return maxChars;
  }
 
  public LabelExtended setCSS(String style) {
    setStyle(style);
    return this;
  }
 
  public LabelExtended setMaxChars(int maxChars) {
    this.maxChars = maxChars;
    return this;
  }
 
  public LabelExtended setString(String value) {
    setValue(value);
    return this;
  }
  
  public LabelExtended setResourceValue(String resourceValue) {
    if(resourceValue.startsWith("#")) {
      // LabelBundle legacy
      setValue(I_.get(resourceValue.substring(1)));
    } else {
      setValue(I_.get(resourceValue));
    }
    return this;
  }
 
  public LabelExtended setEnum(Enum e) {
    if(e != null) {
      setValue(I_.byKey(e.toString()));
    }
    return this;
  }
 
  public LabelExtended setDate(Date date) {
    if(date != null) {
      setValue(DateFormats.format(date, true));
    }
    return this;
  }
 
  public LabelExtended setDateTime(Date date) {
    if(date != null) {
      setValue(DateFormats.format(date, false));
    }
    return this;
  }
 
  public LabelExtended setBoolean(boolean value) {
    setBoolean(Boolean.toString(value));
    return this;
  }
 
  public LabelExtended setBoolean(String value) {
    setValue(I_.get(value));
    return this;
  }
 
  public LabelExtended setDouble(double value) {
    setValue(format == null ? DecimalFormats.format(value) :
            DecimalFormats.format(value, format));
    return this;
  }
 
  public LabelExtended setLong(long value) {
    setValue(format == null ? DecimalFormats.format(value) :
            DecimalFormats.format(value, format));
    return this;
  }
  
  public boolean isShowTooltip() {
    return showTooltip;
  }
 
  public LabelExtended setShowTooltip(boolean showTooltip) {
    this.showTooltip = showTooltip;
    return this;
  }
 
  public int getWordWrap() {
    return wordWrap;
  }
 
  public LabelExtended setWordWrap(int wordWrap) {
    this.wordWrap = wordWrap;
    return this;
  }
 
  @Override
  public void setValue(String value) {
    if(value != null) {
      if(maxChars > 0 && value.length() > maxChars) {
        if(showTooltip) {
          setTooltiptext(value);
        }
        value = value.substring(0, lastIndexOfWhiteChar(value, maxChars)) + "...";
      }
      if(wordWrap > 0) {
        if(isPre()) {
          value = insertLF(value, wordWrap);
        }
      }
    }
    super.setValue(value);
  }
 
  private String insertLF(String s, int from) {
    StringBuffer sb = new StringBuffer(s);
    int p = 0, c = 0;
    while(p < sb.length() - 1) {
      p++; c++;
      if(c > from && sb.charAt(p) == ' ') {
        sb.setCharAt(p, '\n');
        c = 0;
      }
      else if(sb.charAt(p) == '\n')
        c = 0;
    }
    return sb.toString();
  }
 
  private int lastIndexOfWhiteChar(String value, int maxChars) {
    int maxLast = 0, last;
    last = value.lastIndexOf(' ', maxChars);
    if(last > maxLast) maxLast = last;
    last = value.lastIndexOf('\n', maxChars);
    if(last > maxLast) maxLast = last;
    last = value.lastIndexOf('.', maxChars);
    if(last > maxLast) maxLast = last;
    last = value.lastIndexOf(',', maxChars);
    if(last > maxLast) maxLast = last;
    return maxLast;
  }
 
}