Allow creating custom popup menu presenters which can optionally be disabled

Author: jisedlac

visualvm/core/manifest.mf

@@ -5,5 +5,5 @@ OpenIDE-Module: org.graalvm.visualvm.core/2
 OpenIDE-Module-Layer: org/graalvm/visualvm/core/boot/layer.xml
 OpenIDE-Module-Localizing-Bundle: org/graalvm/visualvm/core/boot/Bundle.properties
 OpenIDE-Module-Install: org/graalvm/visualvm/core/boot/Install.class
-OpenIDE-Module-Specification-Version: 2.0
+OpenIDE-Module-Specification-Version: 2.1
 

visualvm/core/src/org/graalvm/visualvm/core/explorer/ExplorerContextMenuFactory.java

@@ -42,6 +42,7 @@
 import org.openide.filesystems.FileUtil;
 import org.openide.loaders.DataFolder;
 import org.openide.loaders.DataObject;
+import org.openide.util.actions.Presenter;
 
 /**
  * Class responsible for building explorer context menu.
@@ -100,7 +101,7 @@ JPopupMenu createPopupMenu() {
         if (!actions.isEmpty()) {
             for (Action action : actions) {
                 if (action == null) popupMenu.addSeparator();
-                else popupMenu.add(new DataSourceItem(action));
+                else popupMenu.add(createItem(action));
             }
         }
 
@@ -217,6 +218,12 @@ private List<Action> cleanupActions(List<Action> actions) {
     }
 
 
+    private static JMenuItem createItem(Action action) {
+        if (action instanceof Presenter.Popup) return ((Presenter.Popup)action).getPopupPresenter();
+        else return new DataSourceItem(action);
+    }
+    
+    
     private static class DataSourceItem extends JMenuItem {
         public DataSourceItem(Action action) {
             super(action);