ShowFileDialog.java Source code

Introduction

Here is the source code for ShowFileDialog.java

Source

//Send questions, comments, bug reports, etc. to the authors:

//Rob Warner (rwarner@interspatial.com)
//Robert Harris (rbrt_harris@yahoo.com)

import java.io.File;
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

/**
 * This class demonstrates FileDialog
 */
public class ShowFileDialog {
    // These filter names are displayed to the user in the file dialog. Note that
    // the inclusion of the actual extension in parentheses is optional, and
    // doesn't have any effect on which files are displayed.
    private static final String[] FILTER_NAMES = { "OpenOffice.org Spreadsheet Files (*.sxc)",
            "Microsoft Excel Spreadsheet Files (*.xls)", "Comma Separated Values Files (*.csv)",
            "All Files (*.*)" };

    // These filter extensions are used to filter which files are displayed.
    private static final String[] FILTER_EXTS = { "*.sxc", "*.xls", "*.csv", "*.*" };

    /**
     * Runs the application
     */
    public void run() {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("File Dialog");
        createContents(shell);
        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();
    }

    /**
     * Creates the contents for the window
     * 
     * @param shell the parent shell
     */
    public void createContents(final Shell shell) {
        shell.setLayout(new GridLayout(5, true));

        new Label(shell, SWT.NONE).setText("File Name:");

        final Text fileName = new Text(shell, SWT.BORDER);
        GridData data = new GridData(GridData.FILL_HORIZONTAL);
        data.horizontalSpan = 4;
        fileName.setLayoutData(data);

        Button multi = new Button(shell, SWT.PUSH);
        multi.setText("Open Multiple...");
        multi.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                // User has selected to open multiple files
                FileDialog dlg = new FileDialog(shell, SWT.MULTI);
                dlg.setFilterNames(FILTER_NAMES);
                dlg.setFilterExtensions(FILTER_EXTS);
                String fn = dlg.open();
                if (fn != null) {
                    // Append all the selected files. Since getFileNames() returns only 
                    // the names, and not the path, prepend the path, normalizing
                    // if necessary
                    StringBuffer buf = new StringBuffer();
                    String[] files = dlg.getFileNames();
                    for (int i = 0, n = files.length; i < n; i++) {
                        buf.append(dlg.getFilterPath());
                        if (buf.charAt(buf.length() - 1) != File.separatorChar) {
                            buf.append(File.separatorChar);
                        }
                        buf.append(files[i]);
                        buf.append(" ");
                    }
                    fileName.setText(buf.toString());
                }
            }
        });

        Button open = new Button(shell, SWT.PUSH);
        open.setText("Open...");
        open.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                // User has selected to open a single file
                FileDialog dlg = new FileDialog(shell, SWT.OPEN);
                dlg.setFilterNames(FILTER_NAMES);
                dlg.setFilterExtensions(FILTER_EXTS);
                String fn = dlg.open();
                if (fn != null) {
                    fileName.setText(fn);
                }
            }
        });

        Button save = new Button(shell, SWT.PUSH);
        save.setText("Save...");
        save.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                // User has selected to save a file
                FileDialog dlg = new FileDialog(shell, SWT.SAVE);
                dlg.setFilterNames(FILTER_NAMES);
                dlg.setFilterExtensions(FILTER_EXTS);
                String fn = dlg.open();
                if (fn != null) {
                    fileName.setText(fn);
                }
            }
        });
    }

    /**
     * The application entry point
     * 
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new ShowFileDialog().run();
    }
}