prefs: Show custom layout names if provided

Show the name of custom layouts in the list if it's provided using the
`name` attribute.
This should make managing several custom layouts easier.

srcs/juloo.keyboard2/Config.java

@@ -430,7 +430,7 @@ final class Config
           l.add(migrate_layout(snd_layout));
         String custom_layout = prefs.getString("custom_layout", "");
         if (custom_layout != null && !custom_layout.equals(""))
-          l.add(new LayoutsPreference.CustomLayout(custom_layout));
+          l.add(LayoutsPreference.CustomLayout.parse(custom_layout));
         LayoutsPreference.save_to_preferences(e, l);
       case 1:
       default: break;

srcs/juloo.keyboard2/KeyboardData.java

@@ -27,6 +27,8 @@ class KeyboardData
   public final String script;
   /** Might be different from [script]. Might be null. */
   public final String numpad_script;
+  /** The [name] attribute. Might be null.  */
+  public final String name;
   /** Position of every keys on the layout, see [getKeys()]. */
   private Map<KeyValue, KeyPos> _key_pos = null;
 
@@ -229,6 +231,7 @@ class KeyboardData
     String numpad_script = parser.getAttributeValue(null, "numpad_script");
     if (numpad_script == null)
       numpad_script = script;
+    String name = parser.getAttributeValue(null, "name");
     ArrayList<Row> rows = new ArrayList<Row>();
     Modmap modmap = null;
     while (next_tag(parser))
@@ -248,7 +251,7 @@ class KeyboardData
     float kw = (specified_kw != 0f) ? specified_kw : compute_max_width(rows);
     if (add_bottom_row)
       rows.add(bottom_row.updateWidth(kw));
-    return new KeyboardData(rows, kw, modmap, script, numpad_script);
+    return new KeyboardData(rows, kw, modmap, script, numpad_script, name);
   }
 
   private static float compute_max_width(List<Row> rows)
@@ -266,7 +269,8 @@ class KeyboardData
     return Row.parse(parser);
   }
 
-  protected KeyboardData(List<Row> rows_, float kw, Modmap mm, String sc, String npsc)
+  protected KeyboardData(List<Row> rows_, float kw, Modmap mm, String sc,
+      String npsc, String name_)
   {
     float kh = 0.f;
     for (Row r : rows_)
@@ -275,6 +279,7 @@ class KeyboardData
     modmap = mm;
     script = sc;
     numpad_script = npsc;
+    name = name_;
     keysWidth = kw;
     keysHeight = kh;
   }
@@ -282,7 +287,8 @@ class KeyboardData
   /** Copies the fields of an other keyboard, with rows changed. */
   protected KeyboardData(KeyboardData src, List<Row> rows)
   {
-    this(rows, compute_max_width(rows), src.modmap, src.script, src.numpad_script);
+    this(rows, compute_max_width(rows), src.modmap, src.script,
+        src.numpad_script, src.name);
   }
 
   public static class Row

srcs/juloo.keyboard2/LayoutsPreference.java

@@ -67,7 +67,7 @@ public class LayoutsPreference extends ListGroupPreference<LayoutsPreference.Lay
       if (l instanceof NamedLayout)
         layouts.add(layout_of_string(res, ((NamedLayout)l).name));
       else if (l instanceof CustomLayout)
-        layouts.add(KeyboardData.load_string(((CustomLayout)l).xml));
+        layouts.add(((CustomLayout)l).parsed);
       else // instanceof SystemLayout
         layouts.add(null);
     }
@@ -106,7 +106,15 @@ public class LayoutsPreference extends ListGroupPreference<LayoutsPreference.Lay
       return value_i < 0 ? lname : _layout_display_names[value_i];
     }
     else if (l instanceof CustomLayout)
-      return getContext().getString(R.string.pref_layout_e_custom);
+    {
+      // Use the layout's name if possible
+      CustomLayout cl = (CustomLayout)l;
+      if (cl.parsed != null && cl.parsed.name != null
+          && !cl.parsed.name.equals(""))
+        return cl.parsed.name;
+      else
+        return getContext().getString(R.string.pref_layout_e_custom);
+    }
     else // instanceof SystemLayout
       return getContext().getString(R.string.pref_layout_e_system);
   }
@@ -175,7 +183,7 @@ public class LayoutsPreference extends ListGroupPreference<LayoutsPreference.Lay
             if (text == null)
               callback.select(null);
             else
-              callback.select(new CustomLayout(text));
+              callback.select(CustomLayout.parse(text));
           }
 
           public String validate(String text)
@@ -247,7 +255,16 @@ public class LayoutsPreference extends ListGroupPreference<LayoutsPreference.Lay
   static final class CustomLayout implements Layout
   {
     public final String xml;
-    public CustomLayout(String c) { xml = c; }
+    /** Might be null. */
+    public final KeyboardData parsed;
+    public CustomLayout(String xml_, KeyboardData k) { xml = xml_; parsed = k; }
+    public static CustomLayout parse(String xml)
+    {
+      KeyboardData parsed = null;
+      try { parsed = KeyboardData.load_string_exn(xml); }
+      catch (Exception e) {}
+      return new CustomLayout(xml, parsed);
+    }
   }
 
   /** Named layouts are serialized to strings and custom layouts to JSON
@@ -266,7 +283,7 @@ public class LayoutsPreference extends ListGroupPreference<LayoutsPreference.Lay
       JSONObject obj_ = (JSONObject)obj;
       switch (obj_.getString("kind"))
       {
-        case "custom": return new CustomLayout(obj_.getString("xml"));
+        case "custom": return CustomLayout.parse(obj_.getString("xml"));
         case "system": default: return new SystemLayout();
       }
     }