EPiServer - Extending “All properties” view

ProdcutDetailsUiDescriptor & ProductFormEditing

using EPiServer.Cms.Shell.UI.UIDescriptors.ViewConfigurations;
using EPiServer.ServiceLocation;
using EPiServer.Shell;
using EpiServerThumbnail.Models.Pages;

namespace EpiServerThumbnail.Business.EditorDescriptors
{
    [UIDescriptorRegistration]
    public class ProdcutDetailsUiDescriptor : UIDescriptor<ProductPage>
    {
        public ProdcutDetailsUiDescriptor()
            : base(ContentTypeCssClassNames.Page)
        {
            this.DefaultView = "extended-formedit";
            AddDisabledView(CmsViewNames.AllPropertiesView);
        }
    }

    [ServiceConfiguration(typeof(ViewConfiguration))]
    public class ProductFormEditing : FormEditing
    {
        public ProductFormEditing()
        {
            Key = "extended-formedit";
            ForType = typeof (ProductPage);
            ViewType = "alloy.productFormEditing";
        }
    }
}

Dojo widget

define([
        "dojo/_base/declare",
        "dojo/_base/lang",
        "epi-cms/contentediting/FormEditing"
    ],
    function(
        declare,
        lang,
        FormEditing
    ) {
        return declare("alloy.productFormEditing", [FormEditing], {
            widgetsList: {},

            onSetupEditModeComplete: function() {
                this.inherited(arguments);
                this._initMaintenanceMessage();
            },

            _initMaintenanceMessage: function() {
                // get widgets
                var textWidget = this.widgetsList["maintenanceMessage"];
                var checkboxWidget = this.widgetsList["showMaintenanceMessage"];

                this.own(checkboxWidget.on("change", lang.hitch(this, function(value) {
                    if (checkboxWidget.checkbox.get("readOnly")) {
                        return;
                    }
                    textWidget.set("readOnly", !value);
                })));

                if (checkboxWidget.checkbox.get("value") == false) {
                    textWidget.set("readOnly", true);
                }
            },

            onFieldCreated: function(fieldName, widget) {
                this.inherited(arguments);
                this.widgetsList[fieldName] = widget;
            }
        });
    });