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Visualization components for the Morpheus data science library
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/**
* Copyright (C) 2014-2017 Xavier Witdouck
*
* 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.zavtech.morpheus.viz.table;
import java.awt.Font;
import java.text.DecimalFormat;
import java.text.Format;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* One line summary here...
*
* @author Xavier Witdouck
*
* This is open source software released under the Apache 2.0 License
*/
public class DataFrameCellFormat {
private static final Logger LOG = Logger.getLogger(DataFrameCellFormat.class.getName());
public static final int DECIMAL = 0;
public static final int PERCENT = 1;
public static final int BASIS_POINTS = 2;
public static final int SCIENTIFIC = 3;
private static final List decimalFormatList = new ArrayList();
private static final List percentFormatList = new ArrayList();
private static final List scientificFormatList = new ArrayList();
private static final List basisPointsFormatList = new ArrayList();
private static final Map dateFormatMap = new HashMap();
private Font font;
private int precision = 4;
private int numberType = DECIMAL;
private int alignment = -1;
private String datePattern = "dd-MMM-yyyy";
private Object background;
private Object foreground;
/**
* Static initializer
*/
static {
try {
createDecimalFormats("#,##0;-#,##0", 30, 1, decimalFormatList);
createDecimalFormats("0E00;-0E00", 30, 1, scientificFormatList);
createDecimalFormats("#,##0'%';-#,##0'%'", 30, 100, percentFormatList);
createDecimalFormats("#,##0' bps';-#,##0' bps'", 30, 10000, basisPointsFormatList);
} catch (Throwable t) {
LOG.log(Level.SEVERE, t.getMessage(), t);
}
}
/**
* Constructor
*/
public DataFrameCellFormat() {
super();
}
/**
* Returns the font for this format
* @return the font
*/
public Font getFont() {
return font;
}
/**
* Returns the alignment for this cell format
* @param defaultAlignment the default alignment if none defined
* @return the alignment
*/
public int getAlignment(int defaultAlignment) {
return alignment >= 0 ? alignment : defaultAlignment;
}
/**
* Returns the number type for this format
* @return the number type
*/
public int getNumberType() {
return numberType;
}
/**
* Returns the precision for this format
* @return the precision
*/
public int getPrecision() {
return precision;
}
/**
* Returns the date pattern for this format
* @return the date pattern
*/
public String getDatePattern() {
return datePattern;
}
/**
* Returns the background for this format
* @return the background
*/
public Object getBackground() {
return background;
}
/**
* Returns the foreground for this format
* @return the forground
*/
public Object getForeground() {
return foreground;
}
/**
* Sets the font for this format
* @param font the font
*/
public void setFont(Font font) {
this.font = font;
}
/**
* Sets the alignment for this format
* @param alignment the alignment
*/
public void setAlignment(int alignment) {
this.alignment = alignment;
}
/**
* Sets the precision for this format
* @param precision the precision
*/
public void setPrecision(int precision) {
this.precision = precision;
}
/**
* Sets the number type for this format
* @param numberType the number type
*/
public void setNumberType(int numberType) {
this.numberType = numberType;
}
/**
* Sets the date pattern for this format
* @param datePattern the date pattern
*/
public void setDatePattern(String datePattern) {
this.datePattern = datePattern;
}
/**
* Sets the background for this format
* @param background the background
*/
public void setBackground(Object background) {
this.background = background;
}
/**
* Sets the foreground for this pattern
* @param foreground the foreground
*/
public void setForeground(Object foreground) {
this.foreground = foreground;
}
/**
* Formats the value of a cell in a readable text
* @param value the value to format
* @return the formatted text
*/
public String format(Object value) {
if (value == null) return null;
else if (value instanceof Date) return formatDate((Date)value);
else if (value instanceof Number) return formatDecimal((Number)value);
else return value.toString();
}
/**
* Called to increase the decimal precision
*/
public final void increasePrecision() {
this.precision++;
}
/**
* Called to decrease the decimal precision
*/
public final void decreasePrecision() {
this.precision--;
}
/**
* Returns a formatted date string for the row and column coordinates
* @param date the date value
* @return the formatted string
*/
protected synchronized String formatDate(Date date) {
final String pattern = this.getDatePattern();
Format dateFormat = dateFormatMap.get(pattern);
if (dateFormat == null) {
dateFormat = new SimpleDateFormat(pattern);
dateFormatMap.put(pattern, dateFormat);
}
return dateFormat.format(date);
}
/**
* Returns a formatted decimal string for cell value specified
* @param value the actual value to render
* @return the formatted decimal string
*/
protected synchronized String formatDecimal(Number value) {
final int precision = this.getPrecision();
final int type = this.getNumberType();
switch (type) {
case DataFrameCellFormat.DECIMAL:
return decimalFormatList.get(precision).format(value);
case DataFrameCellFormat.PERCENT:
return percentFormatList.get(precision).format(value);
case DataFrameCellFormat.SCIENTIFIC:
return scientificFormatList.get(precision).format(value);
case DataFrameCellFormat.BASIS_POINTS:
return basisPointsFormatList.get(precision).format(value);
default:
return decimalFormatList.get(precision).format(value);
}
}
/**
* A routine to ofInts a sequence of decimal formats for various precisions
* @param template the pattern template
* @param count the number for formatters to ofInts each of increasing precision
* @param multiplier the multiplier to accept to format
* @param formats the list of formats to populate
*/
private static void createDecimalFormats(String template, int count, int multiplier, List formats) {
try {
for (int i=0; i 0 ? "." : "");
for (int j=0; j", zeros.toString());
final DecimalFormat format = new DecimalFormat(pattern);
format.setMultiplier(multiplier);
formats.add(format);
}
} catch (Throwable t) {
LOG.log(Level.SEVERE, t.getMessage(), t);
}
}
}