package org.nchc.incident;

import java.text.DecimalFormat;

import org.zkoss.pivot.Calculator;
import org.zkoss.pivot.PivotField;
import org.zkoss.pivot.PivotHeaderContext;
import org.zkoss.pivot.PivotRenderer;
import org.zkoss.pivot.Pivottable;
import org.zkoss.pivot.impl.util.Texts;

public class CustomPivotRenderer implements PivotRenderer {

	private DecimalFormat _nnf = new DecimalFormat("##,###");
	
	@Override
	public int getColumnSize(Pivottable table, PivotHeaderContext columnContext, PivotField field) {
		int columnSize = 100; // 所有欄位預設欄寬
		if (columnContext.isGrandTotal() && field != null) {
			columnSize = 200;
		} else {
			if ("Pointer".equals(field.getTitle()))
				columnSize = 50;
		}
		return columnSize;
	}

	@Override
	public int getRowSize(Pivottable table, PivotHeaderContext rowContext, PivotField field) {
		return 25;
	}

	@Override
	public String renderCell(Object data, Pivottable table, PivotHeaderContext rowContext, PivotHeaderContext columnContext, PivotField field) {
		String result = data != null ? _nnf.format(data) : _nnf.format(0);
		return result;
	}

	@Override
	public String renderField(Object data, Pivottable table, PivotField field) {
		return field.getType() == PivotField.Type.DATA ?
				field.getTitle() : data == null ? "(null)" : String.valueOf(data);
	}

	@Override
	public String renderGrandTotalField(Pivottable table, PivotField field) {
		String result;
		if (field == null)
			result = "Grand Total";
		else
			result = "Grand Total of " + field.getTitle();
		return result;
	}

	@Override
	public String renderSubtotalField(Object data, Pivottable table, PivotField field, Calculator calculator) {
		String calLabel;
		if ("sum".equals(calculator.getType())) {
			calLabel = "Subtotal";
		} else if ("count".equals(calculator.getType())) {
			calLabel = "Subtotal";
		} else {
			calLabel = Texts.capitalize(calculator.getType());
		}
		String dataLabel = data != null ? data.toString() : "Null";
		String result = (new StringBuilder(String.valueOf(dataLabel))).append(" ").append(calLabel).toString();
		return result;
	}

}