FileDialog doesn't call FilenameFilter.accept()

Name: mc57594 Date: 02/10/97


Windows NT 4.0, Service Pack 2
Pentium 120

Add a System.out.println to the accept method of Main.java
Compile the example (from Java Class examples (from 1.0.2, in which the bug also manifests itself)).
Run using java Main
Put any filter in you wish, the accept method is never called, and the list is
not filtered.
  

Code for Main.java follows:

import java.awt.*;
import java.io.*;
class Main extends Frame implements FilenameFilter {
    FileDialog fd;
    TextField tfDirectory = new TextField();
    TextField tfFile = new TextField();
    TextField tfFilter = new TextField();

    Main() {
        super("FileDialog Example");
        add("West", new Button("Load"));
        add("East", new Button("Save"));

        Panel p = new Panel();
        p.setLayout(new GridBagLayout());
        addRow(p, new Label("directory:", Label.RIGHT), tfDirectory);
        addRow(p, new Label("file:", Label.RIGHT), tfFile);
        addRow(p, new Label("filter:", Label.RIGHT), tfFilter);

        add("South", p);
        pack();
        show();
    }

    // Adds a row in a gridbag layout where the c2 is stretchy
    // and c1 is not.
    void addRow(Container cont, Component c1, Component c2) {
        GridBagLayout gbl = (GridBagLayout)cont.getLayout();
        GridBagConstraints c = new GridBagConstraints();
        Component comp;

        c.fill = GridBagConstraints.BOTH;
        cont.add(c1);
        gbl.setConstraints(c1, c);

        c.gridwidth = GridBagConstraints.REMAINDER;
        c.weightx = 1.0;
        cont.add(c2);
        gbl.setConstraints(c2, c);
    }

    public boolean accept(File dir, String name) {
System.out.println("File "+dir+" String "+name);
        if (fd.getMode() == FileDialog.LOAD) {
            return name.lastIndexOf(tfFilter.getText()) > 0;
        }
        return true;
    }

    public boolean action(Event evt, Object what) {
        boolean load = "Load".equals(what);

        if (load || "Save".equals(what)) {
            fd = new FileDialog(this, null,
                load ? FileDialog.LOAD : FileDialog.SAVE);
            fd.setDirectory(tfDirectory.getText());
            fd.setFile(tfFile.getText());
            fd.setFilenameFilter(this);
            fd.show();
            tfDirectory.setText(fd.getDirectory());
            tfFile.setText(fd.getFile());
            
            // Filter must be the same
            if (fd.getFilenameFilter() != this) {
                throw new RuntimeException("Internal error");
            }
            return true;
        }
        return false;
    }

    static public void main(String[] args) {
        new Main();
    }

}


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