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.expression.model.expr.set;
  
  import com.bstek.ureport.Utils;
  import com.bstek.ureport.build.Context;
  import com.bstek.ureport.expression.model.data.ExpressionData;
  import com.bstek.ureport.expression.model.data.NoneExpressionData;
  import com.bstek.ureport.expression.model.data.ObjectExpressionData;
  import com.bstek.ureport.expression.model.data.ObjectListExpressionData;
  import com.bstek.ureport.expression.model.expr.BaseExpression;
  import com.bstek.ureport.model.Cell;
  import com.bstek.ureport.model.Column;
  import com.bstek.ureport.model.Row;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  /**
   * @author
   * @since 1月1日
   */
  public class CellExpression extends BaseExpression {
  	private static final long serialVersionUID = 8376298136905903019L;
  	protected String cellName;
  	public CellExpression(String cellName) {
  		this.cellName=cellName;
  	}
  	public boolean supportPaging(){
  		return true;
  	}
  	@Override
  	protected ExpressionData<?> compute(Cell cell,Cell currentCell,Context context) {
  		List<Cell> targetCells=Utils.fetchTargetCells(cell, context, cellName);
  		if(targetCells.size()>1){
  			List<Object> list=new ArrayList<Object>();
  			for(Cell targetCell:targetCells){
  				list.add(targetCell.getData());
  			}
  			return new ObjectListExpressionData(list);
  		}else if(targetCells.size()==1){
  			return new ObjectExpressionData(targetCells.get(0).getData());
  		}else{
  			return new NoneExpressionData();
  		}
  	}
  
  	public ExpressionData<?> computePageCells(Cell cell,Cell currentCell,Context context) {
  		int pageIndex=cell.getRow().getPageIndex();
  		if(pageIndex==0)pageIndex=1;
  		List<Row> pageRows=context.getCurrentPageRows(pageIndex);
  		List<Object> list=new ArrayList<Object>();
  		Map<Row, Map<Column, Cell>> cellMap=context.getReport().getRowColCellMap();
  		List<Column> columns=context.getReport().getColumns();
  		for(Row row:pageRows){
  			Map<Column, Cell> map=cellMap.get(row);
  			if(map==null){
  				continue;
  			}
  			for(Column col:columns){
  				Cell targetCell=map.get(col);
  				if(targetCell==null || !targetCell.getName().equals(cellName)){
  					continue;
  				}
  				list.add(targetCell.getData());
  			}
  		}
  		return new ObjectListExpressionData(list);
  	}
  
  	protected List<Cell> fetchPageCells(Cell cell,Cell currentCell,Context context){
  		int pageIndex=cell.getRow().getPageIndex();
  		if(pageIndex==0)pageIndex=1;
  		List<Row> pageRows=context.getCurrentPageRows(pageIndex);
  		Map<Row, Map<Column, Cell>> cellMap=context.getReport().getRowColCellMap();
  		List<Column> columns=context.getReport().getColumns();
  		List<Cell> list=new ArrayList<Cell>();
  		for(Row row:pageRows){
  			Map<Column, Cell> map=cellMap.get(row);
  			if(map==null){
  				continue;
  			}
  			for(Column col:columns){
  				Cell targetCell=map.get(col);
  				if(targetCell==null || !targetCell.getName().equals(cellName)){
  					continue;
  				}
  				list.add(targetCell);
  			}
  		}
  		return list;
  	}
  }
  