You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
3.1 KiB
112 lines
3.1 KiB
/*
|
|
* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
|
|
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
|
|
package javax.swing.filechooser;
|
|
|
|
import java.io.File;
|
|
import javax.swing.*;
|
|
|
|
/**
|
|
* <code>FileView</code> defines an abstract class that can be implemented
|
|
* to provide the filechooser with UI information for a <code>File</code>.
|
|
* Each L&F <code>JFileChooserUI</code> object implements this
|
|
* class to pass back the correct icons and type descriptions specific to
|
|
* that L&F. For example, the Microsoft Windows L&F returns the
|
|
* generic Windows icons for directories and generic files.
|
|
* Additionally, you may want to provide your own <code>FileView</code> to
|
|
* <code>JFileChooser</code> to return different icons or additional
|
|
* information using {@link javax.swing.JFileChooser#setFileView}.
|
|
*
|
|
* <p>
|
|
*
|
|
* <code>JFileChooser</code> first looks to see if there is a user defined
|
|
* <code>FileView</code>, if there is, it gets type information from
|
|
* there first. If <code>FileView</code> returns <code>null</code> for
|
|
* any method, <code>JFileChooser</code> then uses the L&F specific
|
|
* view to get the information.
|
|
* So, for example, if you provide a <code>FileView</code> class that
|
|
* returns an <code>Icon</code> for JPG files, and returns <code>null</code>
|
|
* icons for all other files, the UI's <code>FileView</code> will provide
|
|
* default icons for all other files.
|
|
*
|
|
* <p>
|
|
*
|
|
* For an example implementation of a simple file view, see
|
|
* <code><i>yourJDK</i>/demo/jfc/FileChooserDemo/ExampleFileView.java</code>.
|
|
* For more information and examples see
|
|
* <a
|
|
href="https://docs.oracle.com/javase/tutorial/uiswing/components/filechooser.html">How to Use File Choosers</a>,
|
|
* a section in <em>The Java Tutorial</em>.
|
|
*
|
|
* @see javax.swing.JFileChooser
|
|
*
|
|
* @author Jeff Dinkins
|
|
*
|
|
*/
|
|
public abstract class FileView {
|
|
/**
|
|
* The name of the file. Normally this would be simply
|
|
* <code>f.getName()</code>.
|
|
*/
|
|
public String getName(File f) {
|
|
return null;
|
|
};
|
|
|
|
/**
|
|
* A human readable description of the file. For example,
|
|
* a file named <i>jag.jpg</i> might have a description that read:
|
|
* "A JPEG image file of James Gosling's face".
|
|
*/
|
|
public String getDescription(File f) {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* A human readable description of the type of the file. For
|
|
* example, a <code>jpg</code> file might have a type description of:
|
|
* "A JPEG Compressed Image File"
|
|
*/
|
|
public String getTypeDescription(File f) {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* The icon that represents this file in the <code>JFileChooser</code>.
|
|
*/
|
|
public Icon getIcon(File f) {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Whether the directory is traversable or not. This might be
|
|
* useful, for example, if you want a directory to represent
|
|
* a compound document and don't want the user to descend into it.
|
|
*/
|
|
public Boolean isTraversable(File f) {
|
|
return null;
|
|
}
|
|
|
|
}
|