incorporate Mode fix from Joel (issue #2615)

app/src/processing/app/Editor.java

@@ -389,8 +389,13 @@ public abstract class Editor extends JFrame implements RunnerListener {
       JRadioButtonMenuItem item = new JRadioButtonMenuItem(m.getTitle());
       item.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
-          base.changeMode(m);
-          if (sketch.isModified()) {
+          if (!sketch.isModified()) {
+            base.changeMode(m);
+            
+          } else {
+            // Re-select the old checkbox, because it was automatically 
+            // updated by Java, even though the Mode could not be changed.
+            // https://github.com/processing/processing/issues/2615
             for (Component c : modeMenu.getPopupMenu().getComponents()) {
               if (c instanceof JRadioButtonMenuItem) {
                 if (((JRadioButtonMenuItem)c).getText() == mode.getTitle()) {

build/shared/revisions.txt

@@ -63,6 +63,10 @@ in-progress Google Summer of Code projects and others:
 + Add preference to set the present color
   https://github.com/processing/processing/pull/2568
 
++ Fix a problem where mode menu selection would change even if 
+  the change was canceled due to the sketch being modified
+  https://github.com/processing/processing/issues/2615
+
 
 [ more bug fixes ] 
 

todo.txt

@@ -20,6 +20,8 @@ X contrib properties files ignored in favor of contributions.txt from p5.org
 X   https://github.com/processing/processing/issues/2572
 X tweak mode integrated
 X   https://github.com/processing/processing/pull/2624
+X wrong mode selected if sketch is modified (checkbox changes)
+X   https://github.com/processing/processing/issues/2615
 
 pulls
 X Implementation of a list of open sketches in the Sketch menu