SWT: FileDialog

By using DirectoryDialog widget, user can able to navigate through the file system and select a file.

Ex:

String[] filterExtensions = { "*.txt", "*.doc", "*.*"};

FileDialog fileDialog = new FileDialog(shell, SWT.OPEN);

fileDialog.setText("FileDialog Demo");

fileDialog.setFilterPath("C:/");

fileDialog.setFilterExtensions(filterExtensions);

String selectedFile = fileDialog.open();

Following is the complete working application.

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Shell;

public class Test {

 private static void addWidgetsToShell(Display display, Shell shell) {
  String[] filterExtensions = { "*.txt", "*.doc", "*.*"};
  FileDialog fileDialog = new FileDialog(shell, SWT.OPEN);
  fileDialog.setText("FileDialog Demo");
  fileDialog.setFilterPath("C:/");
  fileDialog.setFilterExtensions(filterExtensions);
  String selectedFile = fileDialog.open();

  System.out.println("User selected : " + selectedFile);
  shell.dispose();
 }

 public static void main(String[] args) {

  /* Instantiate Display object, it represents SWT session */
  Display display = new Display();

  /*
   * Define Shell, it represent a window, You can add more than one shell
   * to Display
   */
  Shell shell = new Shell(display);
  shell.setSize(500, 500);
  addWidgetsToShell(display, shell);

  /*
   * Run the event dispatching loop until an exit condition occurs, which
   * is typically when the main shell window is closed by the user.
   */

  while (!shell.isDisposed()) {
   if (!display.readAndDispatch()) {
    display.sleep();
   }
  }

  /* Dispose the display */
  display.dispose();

 }
}

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