content: /*******************************************************************************
   * Copyright 2017 Bstek
   *
   * 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.
   ******************************************************************************/
  package com.bstek.ureport.console.chart;
  
  import com.bstek.ureport.cache.CacheUtils;
  import com.bstek.ureport.chart.ChartData;
  import com.bstek.ureport.console.RenderPageServletAction;
  import com.bstek.ureport.utils.UnitUtils;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.io.IOException;
  
  /**
   * @author
   * @since 6月30日
   */
  public class ChartServletAction extends RenderPageServletAction {
  	@Override
  	public void execute(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  		String method=retriveMethod(req);
  		if(method!=null){
  			invokeMethod(method, req, resp);
  		}
  	}
  
  	public void storeData(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  		String file=req.getParameter("_u");
  		file=decode(file);
  		String chartId=req.getParameter("_chartId");
  		ChartData chartData=CacheUtils.getChartData(chartId);
  		if(chartData==null){
  			return;
  		}
  		String base64Data=req.getParameter("_base64Data");
  		String prefix="data:image/png;base64,";
  		if(base64Data!=null){
  			if(base64Data.startsWith(prefix)){
  				base64Data=base64Data.substring(prefix.length(),base64Data.length());
  			}
  		}
  		chartData.setBase64Data(base64Data);
  		String width=req.getParameter("_width");
  		String height=req.getParameter("_height");
  		chartData.setHeight(UnitUtils.pixelToPoint(Integer.valueOf(height)));
  		chartData.setWidth(UnitUtils.pixelToPoint(Integer.valueOf(width)));
  	}
  
  	@Override
  	public String url() {
  		return "/chart";
  	}
  }
  