Hi!

Maybe there is a better way to do this but it worked for me:

define("alloy/widget/CollapsedContentSelector", [
// dojo
    "dojo/_base/array",
    "dojo/_base/declare",
    "dojo/_base/lang",

    "epi-cms/widget/ContentSelector"
],

function (
// dojo
    array,
    declare,
    lang,

    ContentSelector
) {

    return declare([ContentSelector], {
        _getDialog: function () {
            var dialog = this.inherited(arguments);

            // At this stage, the dialog has been created in base class. Override _expandRootNodes method.
            this.contentSelectorDialog.multiRootsMode = true;

            this.contentSelectorDialog.tree._expandRootNodes = function () {
                return Promise.resolve();
            };

            return dialog;
        }
    });
});

And in your editor descriptor or property attribute:

extendedMetadata.ClientEditingClass = "alloy/widget/CollapsedContentSelector";

For this example, ~/module.config looks like this:

<?xml version="1.0" encoding="utf-8"?>
<module>
  <dojoModules>
    <add name="alloy" path="Scripts" />
  </dojoModules>
</module>

Yes, this solution makes all nodes stay collapsed as I wanted. An unexpected side effect though, was that one of my parent nodes is a block folder and that node suddenly lost its plus sign icon so it could not be expanded at all. When I added a subfolder the plus sign reappeared, but I can't expect all block folders to contain empty folders for this reason.

However, this fix made it possible for me to implement my original idea of adding all content of my Type1 and Type2 directly as root nodes, without episerver trying to expand them every time the dialog opens so it actually works really well for my purpose. Thank you!

Hi! So the block folder had children but no expand icon?

It has child blocks yes. The expand icon only appears if I add a child folder.