formattednumberrenderer.java

一个用java写的地震分析软件(无源码)-used to write a seismic analysis software (without source)

package org.trinet.util.graphics.table;
import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;
import java.util.*;
import java.text.*;
import java.math.*;
import org.trinet.jdbc.datatypes.*;

public class FormattedNumberRenderer extends DefaultTableCellRenderer {
  DecimalFormat df;
  int fontSize = 12;
  Font font;

  public FormattedNumberRenderer() { 
    super();
    NumberFormat nf = NumberFormat.getNumberInstance();
    this.font  = new Font("Monospaced", Font.PLAIN, fontSize);
    if (nf instanceof DecimalFormat) {
      df = (DecimalFormat) nf;
      df.setGroupingUsed(false);
      df.setDecimalSeparatorAlwaysShown(false);
    }
    this.setFont(font);
    this.setHorizontalAlignment(JLabel.RIGHT);
//    this.setToolTipText("Value in cell must be a number");
  }

  public FormattedNumberRenderer(Font font) { 
    super();
    if (font != null) this.font = font;
    else this.font  = new Font("Monospaced", Font.PLAIN, fontSize);
    NumberFormat nf = NumberFormat.getNumberInstance();
    if (nf instanceof DecimalFormat) {
      df = (DecimalFormat) nf;
      df.setGroupingUsed(false);
      df.setDecimalSeparatorAlwaysShown(false);
    }
    this.setFont(font);
    this.setHorizontalAlignment(JLabel.RIGHT);
//    this.setToolTipText("Value in cell must be a number");
  }

  public FormattedNumberRenderer(String pattern) {
    this();
    df.applyPattern(pattern);
  }

  public FormattedNumberRenderer(String pattern, Font font) {
    this(font);
    df.applyPattern(pattern);
  }

  public int getFontSize() {
    return fontSize;
  }

  public void setFontSize(int fontSize) {
    if (fontSize > 0) this.fontSize = fontSize;
    font = font.deriveFont((float) fontSize);
    this.setFont(font);
  }

// overide protected setValue(Object value) method of super class
// which is called by the super class method getTableCellRendererComponent
    public void setValue(Object value) {
//	Debug.println("FormattedNumberRenderer setValue" + value.getClass().getName());
	if (value == null) {
	    super.setValue("null");
	}
	else if (value instanceof Number) {
	    if (value instanceof Double) {
		if ( ((Double) value).isNaN() ) super.setValue("NaN");
		else super.setValue(df.format(value));
	    }
	    else if (value instanceof Float) {
		if ( ((Float) value).isNaN() ) super.setValue("NaN");
		else super.setValue(df.format(value));
	    }
/*
	    else if value instanceof Long) {
//		if (value.longValue() == Long.MAX_VALUE) super.setValue("");
		else super.setValue(df.format(value));
	    }
	    else if value instanceof Integer) {
//		if (value.intValue() == Integer.MAX_VALUE) super.setValue("");
		else super.setValue(df.format(value));
	    }
*/
	    else super.setValue(df.format(value));
	}
	else if (value instanceof DataObject) {
	    if (value instanceof DataDouble) {
		if ( ((DataDouble) value).isNull() ) super.setValue("null");
		else super.setValue(df.format(((DataDouble) value).doubleValue()));
	    }
	    else if (value instanceof DataFloat) {
		if ( ((DataFloat) value).isNull() ) super.setValue("null");
		else super.setValue(df.format(((DataFloat) value).doubleValue()));
	    }
	    else if (value instanceof DataLong) {
		if (((DataLong)value).isNull() ) super.setValue("null");
		else super.setValue(df.format(((DataLong) value).longValue()));
	    }
/*
	    else if value instanceof DataInteger) {
		if (((DataInteger)value).isNull() ) super.setValue("null");
		else super.setValue(df.format(((DataInteger) value).longValue()));
	    }
*/
	    else super.setValue(df.format(((DataObject) value).longValue()));
	}
	else {
	    super.setValue(value);
	}
    }

    public static String getNumberFormatPattern(int scale) {
      StringBuffer pattern = new StringBuffer("#0");
      if (scale > 0) {
	char [] frac = new char[scale];
	Arrays.fill(frac, '0');
	pattern.append('.');
	pattern.append(frac);
      }
      return pattern.toString();
    }

}