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.chart.dataset.impl.category;
  
  import com.bstek.ureport.build.Context;
  import com.bstek.ureport.model.Cell;
  
  import java.util.List;
  import java.util.Map;
  
  /**
   * @author
   * @since 6月8日
   */
  public class PolarDataset extends CategoryDataset {
  	@Override
  	public String buildDataJson(Context context, Cell cell) {
  		String datasetJson=buildDatasetJson(context, cell,null);
  		StringBuilder sb=new StringBuilder();
  		sb.append("{");
  		String labels=getLabels();
  		sb.append("\"labels\":"+labels+",");
  		sb.append("\"datasets\":["+datasetJson+"]");
  		sb.append("}");
  		return sb.toString();
  	}
  
  	@Override
  	protected String buildDatasets(Map<Object,Map<Object,List<Object>>> map,String props){
  		StringBuilder sb=new StringBuilder();
  		int i=0;
  		for(Object series:map.keySet()){
  			if(i>0){
  				sb.append(",");
  			}
  			sb.append("{");
  			sb.append("\"label\":\""+series+"\",");
  			Map<Object,List<Object>> categoryMap=map.get(series);
  			sb.append("\"backgroundColor\":"+buildBackgroundColor(i, categoryMap.size())+",");
  			sb.append("\"data\":"+buildData(categoryMap));
  			if(props!=null){
  				sb.append(","+props);
  			}
  			sb.append("}");
  			i++;
  		}
  		return sb.toString();
  	}
  
  	private String buildBackgroundColor(int start,int size){
  		StringBuilder sb=new StringBuilder();
  		sb.append("[");
  		for(int i=start;i<size;i++){
  			String color=getRgbColor(i);
  			if(sb.length()>1){
  				sb.append(",");
  			}
  			sb.append("\"rgb("+color+")\"");
  		}
  		sb.append("]");
  		return sb.toString();
  	}
  
  	@Override
  	public String getType() {
  		return "polarArea";
  	}
  }
  