Example usage for javax.swing JFileChooser removeAll

Introduction

In this page you can find the example usage for javax.swing JFileChooser removeAll.

Prototype

public void removeAll() 

Source Link

Document

Removes all the components from this container.

Usage

From source file:SwingUtil.java

/**
 * Get a file selection using the FileChooser dialog.
 *
 * @param owner/*from w w w.  j  av  a2 s . co m*/
 * The parent of this modal dialog.
 * @param defaultSelection
 * The default file selection as a file.
 * @param filter
 * An extension filter
 * @param title
 * The caption for the dialog.
 *
 * @return
 * A selected file or null if no selection is made.
 */
public static File getFileChoice(Component owner, File defaultSelection, FileFilter filter, String title) {
    //
    // There is apparently a bug in the native Windows FileSystem class that
    // occurs when you use a file chooser and there is a security manager
    // active. An error dialog is displayed indicating there is no disk in
    // Drive A:. To avoid this, the security manager is temporarily set to
    // null and then reset after the file chooser is closed.
    //
    SecurityManager sm = null;
    File choice = null;
    JFileChooser chooser = null;

    sm = System.getSecurityManager();
    System.setSecurityManager(null);

    chooser = new JFileChooser();
    if (defaultSelection.isDirectory()) {
        chooser.setCurrentDirectory(defaultSelection);
    } else {
        chooser.setSelectedFile(defaultSelection);
    }
    chooser.setFileFilter(filter);
    chooser.setDialogTitle(title);
    chooser.setApproveButtonText("OK");
    int v = chooser.showOpenDialog(owner);

    owner.requestFocus();
    switch (v) {
    case JFileChooser.APPROVE_OPTION:
        if (chooser.getSelectedFile() != null) {
            choice = chooser.getSelectedFile();
        }
        break;
    case JFileChooser.CANCEL_OPTION:
    case JFileChooser.ERROR_OPTION:
    }
    chooser.removeAll();
    chooser = null;
    System.setSecurityManager(sm);
    return choice;
}

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From source file:SwingUtil.java

/**
 * Open a JFileChooser dialog for selecting a directory and return the
 * selected directory./* w w  w .  jav  a 2 s.c om*/
 *
 *
 * @param owner
 * The frame or dialog that controls the invokation of this dialog.
 * @param defaultDir
 * The directory to show when the dialog opens.
 * @param title
 * Tile for the dialog.
 *
 * @return
 * The selected directory as a File. Null if user cancels dialog without
 * a selection.
 *
 */
public static File getDirectoryChoice(Component owner, File defaultDir, String title) {
    //
    // There is apparently a bug in the native Windows FileSystem class that
    // occurs when you use a file chooser and there is a security manager
    // active. An error dialog is displayed indicating there is no disk in
    // Drive A:. To avoid this, the security manager is temporarily set to
    // null and then reset after the file chooser is closed.
    //
    SecurityManager sm = null;
    JFileChooser chooser = null;
    File choice = null;

    sm = System.getSecurityManager();
    System.setSecurityManager(null);
    chooser = new JFileChooser();
    chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
    if ((defaultDir != null) && defaultDir.exists() && defaultDir.isDirectory()) {
        chooser.setCurrentDirectory(defaultDir);
        chooser.setSelectedFile(defaultDir);
    }
    chooser.setDialogTitle(title);
    chooser.setApproveButtonText("OK");
    int v = chooser.showOpenDialog(owner);

    owner.requestFocus();
    switch (v) {
    case JFileChooser.APPROVE_OPTION:
        if (chooser.getSelectedFile() != null) {
            if (chooser.getSelectedFile().exists()) {
                choice = chooser.getSelectedFile();
            } else {
                File parentFile = new File(chooser.getSelectedFile().getParent());

                choice = parentFile;
            }
        }
        break;
    case JFileChooser.CANCEL_OPTION:
    case JFileChooser.ERROR_OPTION:
    }
    chooser.removeAll();
    chooser = null;
    System.setSecurityManager(sm);
    return choice;
}

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