From 0cdb36f73d0d13c310653a5fa71b4c8c6f1c8d17 Mon Sep 17 00:00:00 2001
From: Steve-Mcl <sdmclaughlin@gmail.com>
Date: Fri, 1 Mar 2024 11:08:50 +0000
Subject: [PATCH] support constrained items in editable list

---
 .../src/js/ui/common/editableList.js          | 40 ++++++++++++++++++-
 1 file changed, 38 insertions(+), 2 deletions(-)

diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/common/editableList.js b/packages/node_modules/@node-red/editor-client/src/js/ui/common/editableList.js
index 8ee1f0e29..29cf3172c 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/common/editableList.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/common/editableList.js
@@ -174,12 +174,24 @@
                 this.uiContainer.width(m[1]);
             }
             if (this.options.sortable) {
+                var isCanceled = false; // Flag to track if an item has been canceled from being dropped into a different list
+                var noDrop = false; // Flag to track if an item is being dragged into a different list
                 var handle = (typeof this.options.sortable === 'string')?
                                 this.options.sortable :
                                 ".red-ui-editableList-item-handle";
                 var sortOptions = {
                     axis: "y",
                     update: function( event, ui ) {
+                        // dont trigger update if the item is being canceled
+                        const targetList = $(event.target);
+                        const draggedItem = ui.item;
+                        const draggedItemParent = draggedItem.parent();
+                        if (!targetList.is(draggedItemParent) && draggedItem.hasClass("red-ui-editabelList-item-constrained")) {
+                            noDrop = true;
+                        }
+                        if (isCanceled || noDrop) {
+                            return;
+                        }
                         if (that.options.sortItems) {
                             that.options.sortItems(that.items());
                         }
@@ -189,8 +201,32 @@
                     tolerance: "pointer",
                     forcePlaceholderSize:true,
                     placeholder: "red-ui-editabelList-item-placeholder",
-                    start: function(e, ui){
-                        ui.placeholder.height(ui.item.height()-4);
+                    start: function (event, ui) {
+                        isCanceled = false;
+                        ui.placeholder.height(ui.item.height() - 4);
+                        ui.item.css('cursor', 'grabbing'); // TODO: this doesn't seem to work, use a class instead?
+                    },
+                    stop: function (event, ui) {
+                        ui.item.css('cursor', 'auto');
+                    },
+                    receive: function (event, ui) {
+                        if (ui.item.hasClass("red-ui-editabelList-item-constrained")) {
+                            isCanceled = true;
+                            $(ui.sender).sortable('cancel');
+                        }
+                    },
+                    over: function (event, ui) {
+                        // if the dragged item is constrained, prevent it from being dropped into a different list
+                        const targetList = $(event.target);
+                        const draggedItem = ui.item;
+                        const draggedItemParent = draggedItem.parent();
+                        if (!targetList.is(draggedItemParent) && draggedItem.hasClass("red-ui-editabelList-item-constrained")) {
+                            noDrop = true;
+                            draggedItem.css('cursor', 'no-drop'); // TODO: this doesn't seem to work, use a class instead?
+                        } else {
+                            noDrop = false;
+                            draggedItem.css('cursor', 'grabbing'); // TODO: this doesn't seem to work, use a class instead?
+                        }
                     }
                 };
                 if (this.options.connectWith) {