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Class gui.ExtensionFileFilter

gui.ExtensionFileFilter

public class ExtensionFileFilter
extends javax.swing.filechooser.FileFilter
Sun's FileFilter example, renamed
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 Macintosh. Case is ignored.
Example - create a new filter that filters out all files but gif and jpg image files:

     JFileChooser chooser = new JFileChooser();
     ExtensionFileFilter filter = new ExtensionFileFilter(
                   new String{"gif", "jpg"}, "JPEG & GIF Images")
     chooser.addChoosableFileFilter(filter);
     chooser.showOpenDialog(this);
 

Version:
1.1 10/14/99
Author:
Jeff Dinkins

Constructor Index

 o ExtensionFileFilter()
Creates a file filter.
 o ExtensionFileFilter(String)
Creates a file filter that accepts files with the given extension.
 o ExtensionFileFilter(String, String)
Creates a file filter that accepts the given file type.
 o ExtensionFileFilter(String[])
Creates a file filter from the given string array.
 o ExtensionFileFilter(String[], String)
Creates a file filter from the given string array and description.

Method Index

 o accept(File)
Return true if this file should be shown in the directory pane, false if it shouldn't.
 o addExtension(String)
Adds a filetype "dot" extension to filter against.
 o getDescription()
Returns the human readable description of this filter.
 o getExtension(File)
Return the extension portion of the file's name .
 o isExtensionListInDescription()
Returns whether the extension list (.jpg, .gif, etc) should show up in the human readable description.
 o setDescription(String)
Sets the human readable description of this filter.
 o setExtensionListInDescription(boolean)
Determines whether the extension list (.jpg, .gif, etc) should show up in the human readable description.

Constructors

 o ExtensionFileFilter
 public ExtensionFileFilter()
Creates a file filter. If no filters are added, then all files are accepted.

 o ExtensionFileFilter
 public ExtensionFileFilter(java.lang.String extension)
Creates a file filter that accepts files with the given extension.
Example: new ExtensionFileFilter("jpg");

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

 o ExtensionFileFilter
 public ExtensionFileFilter(java.lang.String filters[])
Creates a file filter from the given string array.
Example: new ExtensionFileFilter(String {"gif", "jpg"});
Note that the "." before the extension is not needed adn will be ignored.

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

Methods

 o 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.

 o getExtension
 public java.lang.String getExtension(java.io.File f)
Return the extension portion of the file's name .

 o 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":
   ExtensionFileFilter filter = new ExtensionFileFilter();
   filter.addExtension("jpg");
   filter.addExtension("tif");
 
Note that the "." before the extension is not needed and will be ignored.

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

 o setDescription
 public void setDescription(java.lang.String description)
Sets the human readable description of this filter. For example: filter.setDescription("Gif and JPG Images");

 o setExtensionListInDescription
 public void setExtensionListInDescription(boolean b)
Determines whether the extension list (.jpg, .gif, etc) should show up in the human readable description.
Only relevant if a description was provided in the constructor or using setDescription();

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


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