Source Code : Html Dimensions

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Html Dimensions

 

/**
 * Licensed under the Common Development and Distribution License,
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.sun.com/cddl/
 *   
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
// Revised from ajax4jsf

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.regex.Pattern;

public class HtmlDimensions {
  
  private static final Pattern PATTERN_NUMERIC = Pattern.compile("^[+-]?\d+(\.\d+)?$");
  private static final Pattern PATTERN_PX = Pattern.compile("^[+-]?\d+(\.\d+)?px$");
  private static final Pattern PATTERN_PCT = Pattern.compile("^[+-]?\d+(\.\d+)?%$");
  
  private static final NumberFormat numericFormat = new DecimalFormat();
  private static final DecimalFormat pxFormat = new DecimalFormat();
  private static final NumberFormat pctFormat = NumberFormat.getPercentInstance();
  
  static{
    pxFormat.setPositiveSuffix("px");
    pxFormat.setNegativeSuffix("px");
  }
  public static Double decode(String size){
    // TODO - handle px,ex,pt enc suffixes.
    double d = 0;
    try {
      if(size != null){
        if(PATTERN_NUMERIC.matcher(size).matches()){
          synchronized(numericFormat){
            d = numericFormat.parse(size).doubleValue();
          }
        } else if(PATTERN_PX.matcher(size).matches()){
          synchronized (pxFormat) {
            d = pxFormat.parse(size).doubleValue();
          }
        } else if(PATTERN_PCT.matcher(size).matches()){
          synchronized (pctFormat) {
            d = pctFormat.parse(size).doubleValue();
          }
        }
      }
    } catch (ParseException e) {
      throw new IllegalArgumentException(e.getMessage());
    }
    return new Double(d);
  }
  
  public static String formatPx(Double value){
    return (value.intValue() + "px");
  }
  public static String formatPct(Double value){
    String v = "";
    synchronized (pctFormat) {
      v = pctFormat.format(value.doubleValue());
    }
    return v;
  }
}

   
  

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