numericcellrenderer.java

struts 2 核心包 的源码 有错误是难免的

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   NumericCellRenderer.java

package org.apache.struts2.components.table.renderer;

import java.text.DecimalFormat;
import org.apache.struts2.components.table.WebTable;

// Referenced classes of package org.apache.struts2.components.table.renderer:
//			AbstractCellRenderer

public class NumericCellRenderer extends AbstractCellRenderer
{

	DecimalFormat _formater;
	String _formatString;
	String _negativeColor;
	String _positiveColor;

	public NumericCellRenderer()
	{
		_formater = new DecimalFormat();
		_formatString = null;
		_negativeColor = null;
		_positiveColor = null;
	}

	public String getCellValue(WebTable table, Object data, int row, int col)
	{
		StringBuffer retVal = new StringBuffer(128);
		if (data == null)
			return "";
		if (data instanceof Number)
		{
			double cellValue = ((Number)data).doubleValue();
			if (cellValue >= 0.0D)
				processNumber(retVal, _positiveColor, cellValue);
			else
				processNumber(retVal, _negativeColor, cellValue);
			return retVal.toString();
		} else
		{
			return data.toString();
		}
	}

	public void setFormatString(String format)
	{
		_formatString = format;
		_formater.applyPattern(_formatString);
	}

	public void setNegativeColor(String color)
	{
		_negativeColor = color;
	}

	public void setPositiveColor(String color)
	{
		_positiveColor = color;
	}

	protected void processNumber(StringBuffer buf, String color, double cellValue)
	{
		if (color != null)
			buf.append(" <font color='").append(color).append("'>");
		buf.append(_formater.format(cellValue));
		if (color != null)
			buf.append("</font>");
	}
}