package com.finance.system.handler;

import com.alibaba.excel.write.handler.SheetWriteHandler;
import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;
import com.alibaba.excel.write.metadata.holder.WriteWorkbookHolder;
import java.util.Map;
import lombok.Data;
import org.apache.poi.ss.usermodel.DataValidation;
import org.apache.poi.ss.usermodel.DataValidationConstraint;
import org.apache.poi.ss.usermodel.DataValidationHelper;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.xssf.usermodel.XSSFDataValidation;

@Data
public class SelectedSheetWriteHandler implements SheetWriteHandler {

    private Map<Integer, String[]> selectedMap;
    private int rows;

    public SelectedSheetWriteHandler(Map<Integer, String[]> selectedMap, int rows) {
        this.selectedMap = selectedMap;
        this.rows = rows;
    }

    @Override
    public void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder,
            WriteSheetHolder writeSheetHolder) {
        //获取sheet页
        Sheet sheet = writeSheetHolder.getSheet();
        int firstRow = writeSheetHolder.getHead().get(0).size() + 1;
        int lastRow = writeSheetHolder.getHead().get(0).size() + rows;
        ///开始设置下拉框
        DataValidationHelper helper = sheet.getDataValidationHelper();
        for (Map.Entry<Integer, String[]> entry : selectedMap.entrySet()) {
            /***起始行、终止行、起始列、终止列**/
            CellRangeAddressList addressList = new CellRangeAddressList(firstRow, lastRow,
                    entry.getKey(), entry.getKey());
            /***设置下拉框数据**/
            DataValidationConstraint constraint = helper.createExplicitListConstraint(
                    entry.getValue());
            DataValidation dataValidation = helper.createValidation(constraint, addressList);
            /***处理Excel兼容性问题**/
            if (dataValidation instanceof XSSFDataValidation) {
                dataValidation.setSuppressDropDownArrow(true);
                dataValidation.setShowErrorBox(true);
            } else {
                dataValidation.setSuppressDropDownArrow(false);
            }
            sheet.addValidationData(dataValidation);
        }
    }
}