Merge pull request #2452 from jdf/master

Permit Modes to specify different default file extension for auxilliary (not main pde) files created in new tabs.

app/src/processing/app/Mode.java

@@ -1046,6 +1046,18 @@ public abstract class Mode {
   abstract public String getDefaultExtension();
 
 
+  /**
+   * Returns the appropriate file extension to use for auxilliary source files in a sketch.
+   * For example, in a Java-mode sketch, auxilliary files should be name "Foo.java"; in
+   * Python mode, they should be named "foo.py".
+   * 
+   * <p>Modes that do not override this function will get the default behavior of returning the
+   * default extension.
+   */
+  public String getModuleExtension() {
+    return getDefaultExtension();
+  }
+
 
   /**
    * Returns a String[] array of proper extensions.

app/src/processing/app/Sketch.java

@@ -333,9 +333,6 @@ public class Sketch {
   /**
    * This is called upon return from entering a new file name.
    * (that is, from either newCode or renameCode after the prompt)
-   * This code is almost identical for both the newCode and renameCode
-   * cases, so they're kept merged except for right in the middle
-   * where they diverge.
    */
   protected void nameCode(String newName) {
     newName = newName.trim();
@@ -348,7 +345,7 @@ public class Sketch {
 
     // Add the extension here, this simplifies some of the logic below.
     if (newName.indexOf('.') == -1) {
-      newName += "." + mode.getDefaultExtension();
+      newName += "." + (renamingCode ? mode.getDefaultExtension() : mode.getModuleExtension());
     }
 
     // if renaming to the same thing as before, just ignore.