Adding a custom action to a callout in SharePoint 2013

This article has been VERY useful. But I wanted something lightly different: I wanted to add a custom action, but also have the « EDIT » button (but not the « SHARE »), and to use the current item info for my custom action.

Here is the result:

// source: https://www.eliostruyf.com/adding-a-custom-action-to-a-callout-in-sharepoint-2013/
// add a special callout action for our library
SP.SOD.executeFunc("callout.js", "Callout", function () {
  var itemCtx = {};
  itemCtx.Templates = {};
  itemCtx.BaseViewID = 'Callout';
  // Define the list template type
  itemCtx.ListTemplateType = 101;
  itemCtx.Templates.Footer = function (itemCtx) {
    // context, custom action function, show the ECB menu (boolean)
    return CalloutRenderFooterTemplate(itemCtx, AddCustomAction, true);
  };
  SPClientTemplates.TemplateManager.RegisterTemplateOverrides(itemCtx);
});

function AddCustomAction (renderCtx, calloutActionMenu) {
  var itemIndex = renderCtx.CurrentItemIdx
  // Add your custom action
  calloutActionMenu.addAction(new CalloutAction ({
    text: "Custom Action",
    tooltip: 'This is your custom action',
    onClickCallback: function() {
      // all the data related to your item are into `renderCtx.ListData.Row[itemIndex]`
      console.log('Callback from custom action');
    }
  }));
  // re-add EDIT action
  calloutActionMenu.addAction(new CalloutAction ({
    text: "Edit",
    onClickCallback: function(event) {
      // use the default action we have when clicking on the filename into the library
      // or call the EditForm if it's a list item and not a library
      DispEx(this, event,'TRUE','FALSE','FALSE','SharePoint.OpenDocuments.3','1','SharePoint.OpenDocuments','','1https://your.sharepoint.com/_layouts/15/WopiFrame.aspx?sourcedoc='+renderCtx.ListData.Row[itemIndex].FileRef+'&action=default','','1','0','0','0x7fffffffffffffff')
    }
  }));
}