edu.princeton.swing

Class ExtensionFileFilter

java.lang.Object

javax.swing.filechooser.FileFilter

edu.princeton.swing.ExtensionFileFilter

public class ExtensionFileFilter
extends javax.swing.filechooser.FileFilter

ExtensionFileFilter extends FileFilter to provide a generalized extension-based file filter.

Constructor Summary

Constructors

Constructor and Description
ExtensionFileFilter() Creates a new ExtensionFileFilter.
ExtensionFileFilter(java.lang.String baseDescription) Creates a new ExtensionFileFilter.
ExtensionFileFilter(java.lang.String extension, java.lang.String baseDescription) Creates a new ExtensionFileFilter.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	accept(java.io.File file) Extend FileFilter to accept only files with an extension matching one added to the filter.
void	addExtension(java.lang.String extension) Adds an extension to the list of accepted extensions.
void	clearExtensions() Removes all extensions from the list of accepted extensions.
java.lang.String	getDescription() Gets a description of this filter.
java.lang.String	getExtension(int index) Return the extension at a given index.
int	getExtensionCount() Return the number of extensions this filter will accept.
void	setBaseDescription(java.lang.String baseDescription) Sets the base description of this filter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExtensionFileFilter

public ExtensionFileFilter()

Creates a new ExtensionFileFilter.

ExtensionFileFilter

public ExtensionFileFilter(java.lang.String baseDescription)

Creates a new ExtensionFileFilter.

ExtensionFileFilter

public ExtensionFileFilter(java.lang.String extension,
                   java.lang.String baseDescription)

Creates a new ExtensionFileFilter.

Method Detail

accept

public boolean accept(java.io.File file)

Extend FileFilter to accept only files with an extension matching one added to the filter.

Specified by:

accept in class javax.swing.filechooser.FileFilter

getExtensionCount

public int getExtensionCount()

Return the number of extensions this filter will accept.

Returns:

The number of extensions this filter will accept.

getExtension

public java.lang.String getExtension(int index)

Return the extension at a given index.

Parameters:

index - The index of the desired extension. An ArrayIndexOutOfBoundsException will be thrown if the index is invalid.

Returns:

The extension at a given index.

addExtension

public void addExtension(java.lang.String extension)

Adds an extension to the list of accepted extensions.

Parameters:

extension - The new extension to accept. A null value will result in a NullPointerException.

clearExtensions

public void clearExtensions()

Removes all extensions from the list of accepted extensions.

getDescription

public java.lang.String getDescription()

Gets a description of this filter.

Specified by:

getDescription in class javax.swing.filechooser.FileFilter

Returns:

A description of this filter, eg. "Web Image Files (*.jpg;*.jpeg;*.gif;*.png)"

setBaseDescription

public void setBaseDescription(java.lang.String baseDescription)

Sets the base description of this filter.

Parameters:

baseDescription - The base description of this filter, eg. "Web Image Files"