Drag from sub menu

[reaper]

I have an isc.Menu that is connected to a client side isc.DataSource that has sub menus via each datasource entry having a parentID that associates sub menu items with one of the main menu items.

The DataSource looks like this:

isc.DataSource.create({
  ID: "mainMenuDS",
  clientOnly: true,
  dataFormat: "json",
  sortField: "order",
  fields: {
    name: {
      title: "Menu Item",
      primaryKey: true,
      name: "name",
      required: true,
      type: "text",
      length: 128
    },
    parentID: {
      hidden: true,
      name: "parentID",
      required: true,
      type: "text",
      rootValue: "root",
      foreignKey: "mainMenuDS.name"
    },
    title: {
      title: "Title",
      name: "title"
    }
  }
});

And the menu itself looks like this:

isc.Menu.create({
  dataSource: mainMenuDS,
  loadDataOnDemand: false,
  canSelectParentItems: false,
  selectionType: "single",
  canDragRecordsOut: true,
  dragDataAction: 'copy',
  canAcceptDrop: false,
  dragType: "myDragItem",
  setDragTracker: function() {
    return true;
  },
  dragStart: function() {
    var record, tracker;
    record = this.getSelectedRecord();
    tracker = "";
    tracker += "<div style='text-align:center;'><img src=\"" + record.icon + "\" /><br />";
    tracker += record.title;
    tracker += "</div>";
    return isc.EventHandler.setDragTracker(tracker);
  }
});

The menu itself is working great, and I can drag items out of the main level. The problem is that I can't drag anything out of the sub menus. Using Firebug I have determined that dragStart is never called when attempting to drag a sub item.

I assume that the sub menu is being auto generated from a default isc.Menu class that doesn't have my dragStart code defined in it.

So the questions are: What am I missing? Why can't I drag out sub items? Is it possible to specify the class for the sub menu so that it can pickup my added code?

Any help would be appreciated.

Thanks,
Chris

[Isomorphic]

You can do this via setting menu.submenuConstructor to the name of a subclass of Menu. This wasn't adequately documented - we're adding more docs now.

[reaper]

That worked perfectly!

Thanks!

-Chris