Added support for a global message bundle to which other bundles fall back

if they can't find a message in their own list of strings.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1876 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/util/MessageBundle.java

@@ -1,5 +1,5 @@
 //
-// $Id: MessageBundle.java,v 1.13 2002/08/16 19:31:39 mdb Exp $
+// $Id: MessageBundle.java,v 1.14 2002/11/01 00:01:37 mdb Exp $
 
 package com.threerings.util;
 
@@ -23,10 +23,11 @@ public class MessageBundle
      * from the supplied resource bundle. The path is provided purely for
      * reporting purposes.
      */
-    public void init (String path, ResourceBundle bundle)
+    public void init (String path, ResourceBundle bundle, MessageBundle parent)
     {
         _path = path;
         _bundle = bundle;
+        _parent = parent;
     }
 
     /**
@@ -72,6 +73,15 @@ public class MessageBundle
             }
 
         } catch (MissingResourceException mre) {
+            // if we have a parent, try getting the string from them
+            if (_parent != null) {
+                String value = _parent.getResourceString(key, false);
+                if (value != null) {
+                    return value;
+                }
+                // if we didn't find it in our parent, we want to fall
+                // through and report missing appropriately
+            }
             if (reportMissing) {
                 Log.warning("Missing translation message " +
                             "[bundle=" + _path + ", key=" + key + "].");
@@ -325,6 +335,9 @@ public class MessageBundle
     /** The resource bundle from which we obtain our messages. */
     protected ResourceBundle _bundle;
 
+    /** Our parent bundle if we're not the global bundle. */
+    protected MessageBundle _parent;
+
     /** Text prefixed by this character will be considered tainted when
      * doing recursive translations and won't be translated. */
     protected static final String TAINT_CHAR = "~";

src/java/com/threerings/util/MessageManager.java

@@ -1,5 +1,5 @@
 //
-// $Id: MessageManager.java,v 1.4 2002/05/01 02:47:18 mdb Exp $
+// $Id: MessageManager.java,v 1.5 2002/11/01 00:01:37 mdb Exp $
 
 package com.threerings.util;
 
@@ -24,6 +24,12 @@ import com.samskivert.util.StringUtil;
  */
 public class MessageManager
 {
+    /** The name of the global resource bundle (which other bundles revert
+     * to if they can't locate a message within themselves). It must be
+     * named <code>global.properties</code> and live at the top of the
+     * bundle hierarchy. */
+    public static final String GLOBAL_BUNDLE = "global";
+
     /**
      * Constructs a message manager with the supplied resource prefix and
      * the default locale. The prefix will be prepended to the path of all
@@ -51,6 +57,9 @@ public class MessageManager
         if (!_prefix.endsWith(".")) {
             _prefix += ".";
         }
+
+        // load up the global bundle
+        _global = getBundle(GLOBAL_BUNDLE);
     }
 
     /**
@@ -121,7 +130,7 @@ public class MessageManager
         // initialize our message bundle, cache it and return it (if we
         // couldn't resolve the bundle, the message bundle will cope with
         // it's null resource bundle)
-        bundle.init(path, rbundle);
+        bundle.init(path, rbundle, _global);
         _cache.put(path, bundle);
         return bundle;
     }
@@ -135,6 +144,10 @@ public class MessageManager
     /** A cache of instantiated message bundles. */
     protected HashMap _cache = new HashMap();
 
+    /** Our top-level message bundle, from which others obtain messages if
+     * they can't find them within themselves. */
+    protected MessageBundle _global;
+
     /** A key that can contain the classname of a custom message bundle
      * class to be used to handle messages for a particular bundle. */
     protected static final String MBUNDLE_CLASS_KEY = "msgbundle_class";