HtmlDimensions.java Source code

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Here is the source code for HtmlDimensions.java

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/**
 * 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;
    }
}