javax.swing.JFileChooser#setDragEnabled ( )源码实例Demo

/**
    * Creates the file chooser.
    *
    * @return the j file chooser
    */
   public JFileChooser createFileChooser() {
// create a filechooser
JFileChooser fc = new JFileChooser();
       if (getSwingSet2() != null && getSwingSet2().isDragEnabled()) {
           fc.setDragEnabled(true);
       }

// set the current directory to be the images directory
File swingFile = new File("resources/images/About.jpg");
if(swingFile.exists()) {
    fc.setCurrentDirectory(swingFile);
    fc.setSelectedFile(swingFile);
}

return fc;
   }
 

public static File selectFileForSave(final Component parent, final FileFilter fileFiltere, final String title, final File initFile) {
  final JFileChooser chooser = new JFileChooser();
  chooser.setMultiSelectionEnabled(false);
  chooser.setDragEnabled(false);
  chooser.setControlButtonsAreShown(true);
  chooser.setDialogType(JFileChooser.SAVE_DIALOG);
  chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
  chooser.setFileFilter(fileFiltere);
  chooser.setDialogTitle(title);
  chooser.setAcceptAllFileFilterUsed(false);

  if (initFile != null) {
    chooser.setSelectedFile(initFile);
  }

  if (chooser.showDialog(parent, "Save") == JFileChooser.APPROVE_OPTION) {
    final File file = chooser.getSelectedFile();
    return file;
  } else {
    return null;
  }
}
 

/**
 * Create and configure a UI to select a DB file
 * @return a instance of a JFileChooser ready to use
 */
static JFileChooser createDBFileChooser() {
    JFileChooser customStoreFileNameFileChooser = new JFileChooser();
    customStoreFileNameFileChooser.setDialogTitle("Select the DB file to use...");
    customStoreFileNameFileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
    customStoreFileNameFileChooser.setDialogType(JFileChooser.SAVE_DIALOG);
    customStoreFileNameFileChooser.setDragEnabled(false);
    customStoreFileNameFileChooser.setMultiSelectionEnabled(false);
    customStoreFileNameFileChooser.setAcceptAllFileFilterUsed(false);
    customStoreFileNameFileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
    customStoreFileNameFileChooser.setFileHidingEnabled(true);
    return customStoreFileNameFileChooser;
}
 

public static File selectFileForOpen(final Component parent, final FileFilter[] fileFilters, final String title, final FileFilter[] selectedFilters, final File initFile) {
  JFileChooser chooser = new JFileChooser();
  chooser.setMultiSelectionEnabled(false);
  chooser.setDragEnabled(false);
  chooser.setControlButtonsAreShown(true);
  chooser.setDialogType(JFileChooser.OPEN_DIALOG);
  chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);

  for (final FileFilter fileFilter : fileFilters) {
    chooser.addChoosableFileFilter(fileFilter);
  }

  chooser.setDialogTitle(title);
  chooser.setAcceptAllFileFilterUsed(false);

  if (initFile != null) {
    chooser.setCurrentDirectory(initFile);
    chooser.setName(initFile.getName());
  }

  int returnVal = chooser.showDialog(parent, "Open");
  selectedFilters[0] = chooser.getFileFilter();

  if (returnVal == JFileChooser.APPROVE_OPTION) {
    File p_file = chooser.getSelectedFile();
    return p_file;
  } else {
    return null;
  }

}