com.jstatcom.io
Class ExtensionFileFilter

java.lang.Object
  javax.swing.filechooser.FileFilter
      com.jstatcom.io.ExtensionFileFilter

public final class ExtensionFileFilter
extends javax.swing.filechooser.FileFilter

A convenience implementation of FileFilter that filters out all files except for those type extensions that it knows about. Extensions are of the type ".foo", which is typically found on Windows and Unix boxes, but not on Macinthosh. Case is ignored. Example - create a new filter that filerts out all files but gif and jpg image files: JFileChooser chooser = new JFileChooser(); ExampleFileFilter filter = new ExampleFileFilter( new String{"gif", "jpg"}, "JPEG & GIF Images") chooser.addChoosableFileFilter(filter); chooser.showOpenDialog(this);

Version:

1.8 08/26/98

Author:

Jeff Dinkins

Constructor Summary

ExtensionFileFilter()
Creates a file filter.

ExtensionFileFilter(java.lang.String extension)
Creates a file filter that accepts files with the given extension.

ExtensionFileFilter(java.lang.String[] filters)
Creates a file filter from the given string array.

ExtensionFileFilter(java.lang.String[] filters, java.lang.String description)
Creates a file filter from the given string array and description.

ExtensionFileFilter(java.lang.String extension, java.lang.String description)
Creates a file filter that accepts the given file type.

ExtensionFileFilter(java.lang.String extension, java.lang.String description, DataHandlerTypes type)
Creates a file filter that accepts the given file type.

Method Summary

boolean	accept(java.io.File f) Return true if this file should be shown in the directory pane, false if it shouldn't.
void	addExtension(java.lang.String extension) Adds a filetype "dot" extension to filter against.
java.lang.String	getDescription() Returns the human readable description of this filter.
java.lang.String	getExtension(java.io.File f) Return the extension portion of the file's name .
DataHandlerTypes	getHandlerType() Gets the handler type or null if none has been set.
boolean	isExtensionListInDescription() Returns whether the extension list (.jpg, .gif, etc) should show up in the human readable description.
void	setDescription(java.lang.String description) Sets the human readable description of this filter.
void	setExtensionListInDescription(boolean b) Determines whether the extension list (.jpg, .gif, etc) should show up in the human readable description.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtensionFileFilter

public ExtensionFileFilter()

Creates a file filter. If no filters are added, then all files are accepted.

See Also:

addExtension(java.lang.String)

ExtensionFileFilter

public ExtensionFileFilter(java.lang.String[] filters)

Creates a file filter from the given string array. Example: new ExampleFileFilter(String {"gif", "jpg"}); Note that the "." before the extension is not needed adn will be ignored.

See Also:

addExtension(java.lang.String)

ExtensionFileFilter

public ExtensionFileFilter(java.lang.String[] filters,
                           java.lang.String description)

Creates a file filter from the given string array and description. Example: new ExampleFileFilter(String {"gif", "jpg"}, "Gif and JPG Images"); Note that the "." before the extension is not needed and will be ignored.

See Also:

addExtension(java.lang.String)

ExtensionFileFilter

public ExtensionFileFilter(java.lang.String extension)

Creates a file filter that accepts files with the given extension. Example: new ExampleFileFilter("jpg");

See Also:

addExtension(java.lang.String)

ExtensionFileFilter

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

Creates a file filter that accepts the given file type. Example: new ExampleFileFilter("jpg", "JPEG Image Images"); Note that the "." before the extension is not needed. If provided, it will be ignored.

See Also:

addExtension(java.lang.String)

ExtensionFileFilter

public ExtensionFileFilter(java.lang.String extension,
                           java.lang.String description,
                           DataHandlerTypes type)

Creates a file filter that accepts the given file type. Example: new ExampleFileFilter("jpg", "JPEG Image Images"); Note that the "." before the extension is not needed. If provided, it will be ignored.

See Also:

addExtension(java.lang.String)

Method Detail

accept

public boolean accept(java.io.File f)

Return true if this file should be shown in the directory pane, false if it shouldn't. Files that begin with "." are ignored.

Specified by:

accept in class javax.swing.filechooser.FileFilter

See Also:

getExtension(java.io.File)

addExtension

public void addExtension(java.lang.String extension)

Adds a filetype "dot" extension to filter against. For example: the following code will create a filter that filters out all files except those that end in ".jpg" and ".tif": ExampleFileFilter filter = new ExampleFileFilter(); filter.addExtension("jpg"); filter.addExtension("tif"); Note that the "." before the extension is not needed and will be ignored.

getDescription

public java.lang.String getDescription()

Returns the human readable description of this filter. For example: "JPEG and GIF Image Files (*.jpg, *.gif)"

Specified by:

getDescription in class javax.swing.filechooser.FileFilter

See Also:

setDescription(java.lang.String), setExtensionListInDescription(boolean), isExtensionListInDescription(), FileFilter.getDescription()

getExtension

public java.lang.String getExtension(java.io.File f)

Return the extension portion of the file's name .

See Also:

getExtension(java.io.File), FileFilter.accept(java.io.File)

isExtensionListInDescription

public boolean isExtensionListInDescription()

Returns whether the extension list (.jpg, .gif, etc) should show up in the human readable description. Only relevent if a description was provided in the constructor or using setDescription();

See Also:

getDescription(), setDescription(java.lang.String), setExtensionListInDescription(boolean)

setDescription

public void setDescription(java.lang.String description)

Sets the human readable description of this filter. For example: filter.setDescription("Gif and JPG Images");

See Also:

setDescription(java.lang.String), setExtensionListInDescription(boolean), isExtensionListInDescription()

setExtensionListInDescription

public void setExtensionListInDescription(boolean b)

Determines whether the extension list (.jpg, .gif, etc) should show up in the human readable description. Only relevent if a description was provided in the constructor or using setDescription();

See Also:

getDescription(), setDescription(java.lang.String), isExtensionListInDescription()

getHandlerType

public DataHandlerTypes getHandlerType()

Gets the handler type or null if none has been set.

Returns:

handler type