Introjucer: added checking to avoid duplicate IDs in groups.

extras/Introjucer/Source/Project/jucer_Module.cpp

@@ -590,7 +590,7 @@ static bool exporterTargetMatches (const String& test, String target)
     validTargets.addTokens (target, ",;", "");
     validTargets.trim();
     validTargets.removeEmptyStrings();
-    
+
     if (validTargets.size() == 0)
         return true;
 
@@ -602,7 +602,7 @@ static bool exporterTargetMatches (const String& test, String target)
              || (target.startsWithChar ('!') && test != target.substring (1).trimStart()))
             return true;
     }
-    
+
     return false;
 }
 

extras/Introjucer/Source/Project/jucer_Project.cpp

@@ -707,7 +707,13 @@ Project::Item Project::Item::getOrCreateSubGroup (const String& name)
 
 Project::Item Project::Item::addNewSubGroup (const String& name, int insertIndex)
 {
-    Item group (createGroup (project, name, createGUID (getID() + name + String (getNumChildren()))));
+    String newID (createGUID (getID() + name + String (getNumChildren())));
+
+    int n = 0;
+    while (findItemWithID (newID).isValid())
+        newID = createGUID (newID + String (++n));
+
+    Item group (createGroup (project, name, newID));
 
     jassert (canContain (group));
     addChild (group, insertIndex);