ExampleFileSystemView.java revision 3842
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0N/A
0N/A
0N/Aimport java.io.File;
0N/Aimport java.io.IOException;
0N/Aimport javax.swing.filechooser.FileSystemView;
0N/A
0N/A
0N/A/**
0N/A * This is a simple example that uses the FileSystemView class.
0N/A * You can provide a superclass of the FileSystemView class with your own functionality.
0N/A *
0N/A * @author Pavel Porvatov
*/
public class ExampleFileSystemView extends FileSystemView {
/**
* Creates a new folder with the default name "New folder". This method is invoked
* when the user presses the "New folder" button.
*/
public File createNewFolder(File containingDir) throws IOException {
File result = new File(containingDir, "New folder");
if (result.exists()) {
throw new IOException("Directory 'New folder' exists");
}
if (!result.mkdir()) {
throw new IOException("Cannot create directory");
}
return result;
}
/**
* Returns a list which appears in a drop-down list of the FileChooser component.
* In this implementation only the home directory is returned.
*/
@Override
public File[] getRoots() {
return new File[] { getHomeDirectory() };
}
/**
* Returns a string that represents a directory or a file in the FileChooser component.
* A string with all upper case letters is returned for a directory.
* A string with all lower case letters is returned for a file.
*/
@Override
public String getSystemDisplayName(File f) {
String displayName = super.getSystemDisplayName(f);
return f.isDirectory() ? displayName.toUpperCase() : displayName.
toLowerCase();
}
}