Add FileBrowser to PreferencesType enum

Related to issue 1279

Change-Id: I5feb28c328a5cd07f9e95647976cb5777ba047f4
Reviewed-on: http://gerrit.dmdirc.com/868
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

src/com/dmdirc/config/prefs/PreferencesType.java

@@ -23,11 +23,11 @@ package com.dmdirc.config.prefs;
 
 /**
  * Enumerates the possible types of preferences.
- * 
+ *
  * @author chris
  */
 public enum PreferencesType {
-    
+
     /** A free-form text preference. */
     TEXT,
     /** A free-form integer preference. */
@@ -45,6 +45,11 @@ public enum PreferencesType {
     /** A duration specified in milliseconds. */
     DURATION,
     /** Font type. */
-    FONT;
-
+    FONT,
+    /** File-Only browse component */
+    FILE,
+    /** Directory-Only browse component */
+    DIRECTORY,
+    /** File or Directory browse component */
+    FILES_AND_DIRECTORIES;
 }