com.netsteadfast.greenstep.struts2.dispatcher.CustomJFreeChartResult.java Source code

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Here is the source code for com.netsteadfast.greenstep.struts2.dispatcher.CustomJFreeChartResult.java

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/* 
 * Copyright 2012-2016 bambooCORE, greenstep of copyright Chen Xin Nien
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * 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.
 * 
 * -----------------------------------------------------------------------
 * 
 * author:    Chen Xin Nien
 * contact: chen.xin.nien@gmail.com
 * 
 */
package com.netsteadfast.greenstep.struts2.dispatcher;

import org.apache.commons.lang3.math.NumberUtils;
import org.apache.log4j.Logger;
import org.apache.struts2.dispatcher.ChartResult;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;

public class CustomJFreeChartResult extends ChartResult {
    protected Logger logger = Logger.getLogger(CustomJFreeChartResult.class);
    private static final long serialVersionUID = -8295368376627015016L;
    private static final int MAX_WIDTH = 1024;
    private static final int MAX_HEIGHT = 1024;
    private static final int MIN_WIDTH = 96;
    private static final int MIN_HEIGHT = 96;

    @Override
    public void doExecute(String finalLocation, ActionInvocation invocation) throws Exception {
        Object newWidth = ActionContext.getContext().getValueStack().findValue("width");
        Object newHeight = ActionContext.getContext().getValueStack().findValue("height");
        if (NumberUtils.isNumber(String.valueOf(newWidth)) && NumberUtils.isNumber(String.valueOf(newHeight))) {
            int w = NumberUtils.toInt(String.valueOf(newWidth));
            int h = NumberUtils.toInt(String.valueOf(newHeight));
            if (w > MAX_WIDTH) {
                w = MAX_WIDTH;
            }
            if (h > MAX_HEIGHT) {
                h = MAX_HEIGHT;
            }
            if (w < MIN_WIDTH) {
                w = MIN_WIDTH;
            }
            if (h < MIN_HEIGHT) {
                h = MIN_HEIGHT;
            }
            super.setWidth(String.valueOf(w));
            super.setHeight(String.valueOf(h));
            logger.info("reset chart width=" + w + " , heigh=" + h);
        }
        super.doExecute(finalLocation, invocation);
    }

}