Reorder tabs when a new file is inserted/renamed

Fixes #5402

Author: facchinm

app/src/processing/app/Editor.java

@@ -1691,6 +1691,24 @@ public void createTabs() {
     selectTab(0);
   }
 
+  private static final Comparator<EditorTab> CODE_DOCS_COMPARATOR = new Comparator<EditorTab>() {
+    @Override
+    public int compare(EditorTab x, EditorTab y) {
+      if (x.getSketchFile().isPrimary() && !y.getSketchFile().isPrimary())
+        return -1;
+      if (y.getSketchFile().isPrimary() && !x.getSketchFile().isPrimary())
+        return 1;
+      return x.getSketchFile().getFileName().compareTo(y.getSketchFile().getFileName());
+    }
+  };
+
+  /**
+   * Reorders tabs as per current sketch's files order
+   */
+  public void reorderTabs() {
+    Collections.sort(tabs, CODE_DOCS_COMPARATOR);
+  }
+
   /**
    * Add a new tab.
    *

app/src/processing/app/EditorHeader.java

@@ -323,6 +323,7 @@ public void rebuildMenu() {
     if (sketch != null) {
       menu.addSeparator();
 
+      editor.reorderTabs();
       int i = 0;
       for (EditorTab tab : editor.getTabs()) {
         SketchFile file = tab.getSketchFile();