Bug 73769 [Dialogs] Open Resource dialog has OK enabled when entry invalid
3.0.1 RC2 - Ctrl+Shift+R - type: WorkbenchWino (note the missing d) and hit Enter - the dialog is dismissed with no action Should disable OK if there is no match.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/ResourceListSelectionDialog.java
/**
     * @see org.eclipse.jface.dialogs.Dialog#cancelPressed()
     */
    protected void cancelPressed() {
        setResult(null);
        super.cancelPressed();
    }
    /**
     * @see org.eclipse.jface.window.Window#close()
     */
    public boolean close() {
        boolean result = super.close();
        labelProvider.dispose();
        return result;
    }
    /**
     * @see org.eclipse.jface.window.Window#create()
     */
    public void create() {
        super.create();
        pattern.setFocus();
    }
    /**
     * Creates the contents of this dialog, initializes the
     * listener and the update thread.
     * 
     * @param parent parent to create the dialog widgets in
     */
    protected Control createDialogArea(Composite parent) {
        Composite dialogArea = (Composite) super.createDialogArea(parent);