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org.jfree.chart.labels
Class AbstractCategoryItemLabelGenerator

java.lang.Object
  extended by org.jfree.chart.labels.AbstractCategoryItemLabelGenerator
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, org.jfree.util.PublicCloneable
Direct Known Subclasses:
StandardCategoryItemLabelGenerator, StandardCategoryToolTipGenerator

public abstract class AbstractCategoryItemLabelGenerator
extends java.lang.Object
implements org.jfree.util.PublicCloneable, java.lang.Cloneable, java.io.Serializable

A base class that can be used to create a label or tooltip generator that can be assigned to a CategoryItemRenderer.

See Also:
Serialized Form

Constructor Summary
protected AbstractCategoryItemLabelGenerator(java.lang.String labelFormat, java.text.DateFormat formatter)
          Creates a label generator with the specified date formatter.
protected AbstractCategoryItemLabelGenerator(java.lang.String labelFormat, java.text.NumberFormat formatter)
          Creates a label generator with the specified number formatter.
protected AbstractCategoryItemLabelGenerator(java.lang.String labelFormat, java.text.NumberFormat formatter, java.text.NumberFormat percentFormatter)
          Creates a label generator with the specified number formatter.
 
Method Summary
 java.lang.Object clone()
          Returns an independent copy of the generator.
protected  java.lang.Object[] createItemArray(CategoryDataset dataset, int row, int column)
          Creates the array of items that can be passed to the MessageFormat class for creating labels.
 boolean equals(java.lang.Object obj)
          Tests this object for equality with an arbitrary object.
 java.lang.String generateColumnLabel(CategoryDataset dataset, int column)
          Generates a label for the specified row.
protected  java.lang.String generateLabelString(CategoryDataset dataset, int row, int column)
          Generates a for the specified item.
 java.lang.String generateRowLabel(CategoryDataset dataset, int row)
          Generates a label for the specified row.
 java.text.DateFormat getDateFormat()
          Returns the date formatter.
 java.lang.String getLabelFormat()
          Returns the label format string.
 java.text.NumberFormat getNumberFormat()
          Returns the number formatter.
 int hashCode()
          Returns a hash code for this instance.
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AbstractCategoryItemLabelGenerator

protected AbstractCategoryItemLabelGenerator(java.lang.String labelFormat,
                                             java.text.NumberFormat formatter)
Creates a label generator with the specified number formatter.

Parameters:
labelFormat - the label format string (null not permitted).
formatter - the number formatter (null not permitted).

AbstractCategoryItemLabelGenerator

protected AbstractCategoryItemLabelGenerator(java.lang.String labelFormat,
                                             java.text.NumberFormat formatter,
                                             java.text.NumberFormat percentFormatter)
Creates a label generator with the specified number formatter.

Parameters:
labelFormat - the label format string (null not permitted).
formatter - the number formatter (null not permitted).
percentFormatter - the percent formatter (null not permitted).
Since:
1.0.2

AbstractCategoryItemLabelGenerator

protected AbstractCategoryItemLabelGenerator(java.lang.String labelFormat,
                                             java.text.DateFormat formatter)
Creates a label generator with the specified date formatter.

Parameters:
labelFormat - the label format string (null not permitted).
formatter - the date formatter (null not permitted).
Method Detail

generateRowLabel

public java.lang.String generateRowLabel(CategoryDataset dataset,
                                         int row)
Generates a label for the specified row.

Parameters:
dataset - the dataset (null not permitted).
row - the row index (zero-based).
Returns:
The label.

generateColumnLabel

public java.lang.String generateColumnLabel(CategoryDataset dataset,
                                            int column)
Generates a label for the specified row.

Parameters:
dataset - the dataset (null not permitted).
column - the column index (zero-based).
Returns:
The label.

getLabelFormat

public java.lang.String getLabelFormat()
Returns the label format string.

Returns:
The label format string (never null).

getNumberFormat

public java.text.NumberFormat getNumberFormat()
Returns the number formatter.

Returns:
The number formatter (possibly null).

getDateFormat

public java.text.DateFormat getDateFormat()
Returns the date formatter.

Returns:
The date formatter (possibly null).

generateLabelString

protected java.lang.String generateLabelString(CategoryDataset dataset,
                                               int row,
                                               int column)
Generates a for the specified item.

Parameters:
dataset - the dataset (null not permitted).
row - the row index (zero-based).
column - the column index (zero-based).
Returns:
The label (possibly null).

createItemArray

protected java.lang.Object[] createItemArray(CategoryDataset dataset,
                                             int row,
                                             int column)
Creates the array of items that can be passed to the MessageFormat class for creating labels.

Parameters:
dataset - the dataset (null not permitted).
row - the row index (zero-based).
column - the column index (zero-based).
Returns:
The items (never null).

equals

public boolean equals(java.lang.Object obj)
Tests this object for equality with an arbitrary object.

Overrides:
equals in class java.lang.Object
Parameters:
obj - the other object (null permitted).
Returns:
A boolean.

hashCode

public int hashCode()
Returns a hash code for this instance.

Overrides:
hashCode in class java.lang.Object
Returns:
A hash code.

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException
Returns an independent copy of the generator.

Specified by:
clone in interface org.jfree.util.PublicCloneable
Overrides:
clone in class java.lang.Object
Returns:
A clone.
Throws:
java.lang.CloneNotSupportedException - should not happen.

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