From f12d36b5ede4898fa8d3fc8a89da79870b6d01f9 Mon Sep 17 00:00:00 2001
From: Nick O'Leary <nick.oleary@gmail.com>
Date: Tue, 1 Nov 2022 10:48:48 +0000
Subject: [PATCH] Locking flows fixes and context menu options

---
 .../editor-client/locales/en-US/editor.json   |   2 +
 .../@node-red/editor-client/src/js/history.js |   6 +-
 .../@node-red/editor-client/src/js/nodes.js   | 107 +++++++++---
 .../editor-client/src/js/ui/clipboard.js      |  50 +++---
 .../editor-client/src/js/ui/contextMenu.js    |  34 ++--
 .../editor-client/src/js/ui/editor.js         |   6 -
 .../src/js/ui/editors/panes/flowProperties.js |   2 -
 .../editor-client/src/js/ui/group.js          |  22 ++-
 .../editor-client/src/js/ui/palette.js        | 164 +++++++++---------
 .../editor-client/src/js/ui/subflow.js        |   5 +-
 .../editor-client/src/js/ui/tab-config.js     |  20 ++-
 .../src/js/ui/tab-info-outliner.js            |   3 +-
 .../editor-client/src/js/ui/view-tools.js     |  47 ++++-
 .../@node-red/editor-client/src/js/ui/view.js | 138 ++++++++++-----
 .../editor-client/src/js/ui/workspaces.js     |  43 ++++-
 .../editor-client/src/sass/flow.scss          |  11 +-
 .../editor-client/src/sass/tab-info.scss      |  10 +-
 17 files changed, 447 insertions(+), 223 deletions(-)

diff --git a/packages/node_modules/@node-red/editor-client/locales/en-US/editor.json b/packages/node_modules/@node-red/editor-client/locales/en-US/editor.json
index 44d370aac..e74dbdbaa 100755
--- a/packages/node_modules/@node-red/editor-client/locales/en-US/editor.json
+++ b/packages/node_modules/@node-red/editor-client/locales/en-US/editor.json
@@ -71,6 +71,8 @@
         "selectNodes": "Click nodes to select",
         "enableFlow": "Enable flow",
         "disableFlow": "Disable flow",
+        "lockFlow": "Lock flow",
+        "unlockFlow": "Unlock flow",
         "moveToStart": "Move flow to start",
         "moveToEnd": "Move flow to end"
     },
diff --git a/packages/node_modules/@node-red/editor-client/src/js/history.js b/packages/node_modules/@node-red/editor-client/src/js/history.js
index b23071239..977ecb187 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/history.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/history.js
@@ -14,7 +14,7 @@
  * limitations under the License.
  **/
 
-/** 
+/**
  * An API for undo / redo history buffer
  * @namespace RED.history
 */
@@ -434,7 +434,9 @@ RED.history = (function() {
 
                 if (ev.node.type === 'tab' && ev.changes.hasOwnProperty('disabled')) {
                     $("#red-ui-tab-"+(ev.node.id.replace(".","-"))).toggleClass('red-ui-workspace-disabled',!!ev.node.disabled);
-                    $("#red-ui-workspace").toggleClass("red-ui-workspace-disabled",!!ev.node.disabled);
+                }
+                if (ev.node.type === 'tab' && ev.changes.hasOwnProperty('locked')) {
+                    $("#red-ui-tab-"+(ev.node.id.replace(".","-"))).toggleClass('red-ui-workspace-locked',!!ev.node.locked);
                 }
                 if (ev.subflow) {
                     inverseEv.subflow = {};
diff --git a/packages/node_modules/@node-red/editor-client/src/js/nodes.js b/packages/node_modules/@node-red/editor-client/src/js/nodes.js
index adbf86741..715ae9c49 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/nodes.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/nodes.js
@@ -19,7 +19,6 @@
  * @namespace RED.nodes
 */
 RED.nodes = (function() {
-
     var PORT_TYPE_INPUT = 1;
     var PORT_TYPE_OUTPUT = 0;
 
@@ -576,8 +575,41 @@ RED.nodes = (function() {
         }
     }
 
+    const nodeProxyHandler = {
+        get(node, prop) {
+            if (prop === '__isProxy__') {
+                return true
+            } else if (prop == '__node__') {
+                return node
+            }
+            return node[prop]
+        },
+        set(node, prop, value) {
+            if (node.z && (RED.nodes.workspace(node.z)?.locked || RED.nodes.subflow(node.z)?.locked)) {
+                if (
+                    node._def.defaults[prop] ||
+                    prop === 'z' ||
+                    prop === 'l' ||
+                    prop === 'd' ||
+                    (prop === 'changed' && !!node.changed !== !!value) ||
+                    ((prop === 'x' || prop === 'y') && !node.resize && node.type !== 'group')
+                ) {
+                    throw new Error(`Cannot modified property '${prop}' of locked object '${node.type}:${node.id}'`)
+                }
+            }
+            node[prop] = value;
+            return true
+        }
+    }
 
     function addNode(n) {
+        let newNode
+        if (!n.__isProxy__) {
+            newNode = new Proxy(n, nodeProxyHandler)
+        } else {
+            newNode = n
+        }
+
         if (n.type.indexOf("subflow") !== 0) {
             n["_"] = n._def._;
         } else {
@@ -601,12 +633,13 @@ RED.nodes = (function() {
                 });
                 n.i = nextId+1;
             }
-            allNodes.addNode(n);
+            allNodes.addNode(newNode);
             if (!nodeLinks[n.id]) {
                 nodeLinks[n.id] = {in:[],out:[]};
             }
         }
-        RED.events.emit('nodes:add',n);
+        RED.events.emit('nodes:add',newNode);
+        return newNode
     }
     function addLink(l) {
         if (nodeLinks[l.source.id]) {
@@ -1335,7 +1368,6 @@ RED.nodes = (function() {
         } else {
             nodeSet = [sf];
         }
-        console.log(nodeSet);
         return createExportableNodeSet(nodeSet);
     }
     /**
@@ -2322,19 +2354,6 @@ RED.nodes = (function() {
             if (n.g && !new_group_set.has(n.g)) {
                 delete n.g;
             }
-            n.nodes = n.nodes.map(function(id) {
-                return node_map[id];
-            })
-            // Just in case the group references a node that doesn't exist for some reason
-            n.nodes = n.nodes.filter(function(v) {
-                if (v) {
-                    // Repair any nodes that have forgotten they are in this group
-                    if (v.g !== n.id) {
-                        v.g = n.id;
-                    }
-                }
-                return !!v
-            });
             if (!n.g) {
                 groupDepthMap[n.id] = 0;
             }
@@ -2357,21 +2376,22 @@ RED.nodes = (function() {
             return groupDepthMap[A.id] - groupDepthMap[B.id];
         });
         for (i=0;i<new_groups.length;i++) {
-            n = new_groups[i];
-            addGroup(n);
+            new_groups[i] = addGroup(new_groups[i]);
+            node_map[new_groups[i].id] = new_groups[i]
         }
 
         for (i=0;i<new_junctions.length;i++) {
-            var junction = new_junctions[i];
-            addJunction(junction);
+            new_junctions[i] = addJunction(new_junctions[i]);
+            node_map[new_junctions[i].id] = new_junctions[i]
         }
 
 
         // Now the nodes have been fully updated, add them.
         for (i=0;i<new_nodes.length;i++) {
-            var node = new_nodes[i];
-            addNode(node);
+            new_nodes[i] = addNode(new_nodes[i])
+            node_map[new_nodes[i].id] = new_nodes[i]
         }
+
         // Finally validate them all.
         // This has to be done after everything is added so that any checks for
         // dependent config nodes will pass
@@ -2379,6 +2399,39 @@ RED.nodes = (function() {
             var node = new_nodes[i];
             RED.editor.validateNode(node);
         }
+        const lookupNode = (id) => {
+            const mappedNode = node_map[id]
+            if (!mappedNode) {
+                return null
+            }
+            if (mappedNode.__isProxy__) {
+                return mappedNode
+            } else {
+                return node_map[mappedNode.id]
+            }
+        }
+        // Update groups to reference proxy node objects
+        for (i=0;i<new_groups.length;i++) {
+            n = new_groups[i];
+            // bypass the proxy in case the flow is locked
+            n.__node__.nodes = n.nodes.map(lookupNode)
+            // Just in case the group references a node that doesn't exist for some reason
+            n.__node__.nodes = n.nodes.filter(function(v) {
+                if (v) {
+                    // Repair any nodes that have forgotten they are in this group
+                    if (v.g !== n.id) {
+                        v.g = n.id;
+                    }
+                }
+                return !!v
+            });
+        }
+
+        // Update links to use proxy node objects
+        for (i=0;i<new_links.length;i++) {
+            new_links[i].source = lookupNode(new_links[i].source.id) || new_links[i].source
+            new_links[i].target = lookupNode(new_links[i].target.id) || new_links[i].target
+        }
 
         RED.workspaces.refresh();
 
@@ -2532,10 +2585,14 @@ RED.nodes = (function() {
     }
 
     function addGroup(group) {
+        if (!group.__isProxy__) {
+            group = new Proxy(group, nodeProxyHandler)
+        }
         groupsByZ[group.z] = groupsByZ[group.z] || [];
         groupsByZ[group.z].push(group);
         groups[group.id] = group;
         RED.events.emit("groups:add",group);
+        return group
     }
     function removeGroup(group) {
         var i = groupsByZ[group.z].indexOf(group);
@@ -2556,6 +2613,9 @@ RED.nodes = (function() {
     }
 
     function addJunction(junction) {
+        if (!junction.__isProxy__) {
+            junction = new Proxy(junction, nodeProxyHandler)
+        }
         junctionsByZ[junction.z] = junctionsByZ[junction.z] || []
         junctionsByZ[junction.z].push(junction)
         junctions[junction.id] = junction;
@@ -2563,6 +2623,7 @@ RED.nodes = (function() {
             nodeLinks[junction.id] = {in:[],out:[]};
         }
         RED.events.emit("junctions:add", junction)
+        return junction
     }
     function removeJunction(junction) {
         var i = junctionsByZ[junction.z].indexOf(junction)
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/clipboard.js b/packages/node_modules/@node-red/editor-client/src/js/ui/clipboard.js
index 61435f6ad..a8bcf9c4a 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/clipboard.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/clipboard.js
@@ -503,7 +503,7 @@ RED.clipboard = (function() {
         $("#red-ui-clipboard-dialog-import-text").on("keyup", validateImport);
         $("#red-ui-clipboard-dialog-import-text").on('paste',function() { setTimeout(validateImport,10)});
 
-        if (RED.workspaces.active() === 0) {
+        if (RED.workspaces.active() === 0 || RED.workspaces.isActiveLocked()) {
             $("#red-ui-clipboard-dialog-import-opt-current").addClass('disabled').removeClass("selected");
             $("#red-ui-clipboard-dialog-import-opt-new").addClass("selected");
         } else {
@@ -1271,15 +1271,17 @@ RED.clipboard = (function() {
             RED.keyboard.add("#red-ui-drop-target", "escape" ,hideDropTarget);
 
             $('#red-ui-workspace-chart').on("dragenter",function(event) {
-                if ($.inArray("text/plain",event.originalEvent.dataTransfer.types) != -1 ||
-                     $.inArray("Files",event.originalEvent.dataTransfer.types) != -1) {
+                if (!RED.workspaces.isActiveLocked() && (
+                    $.inArray("text/plain",event.originalEvent.dataTransfer.types) != -1 ||
+                     $.inArray("Files",event.originalEvent.dataTransfer.types) != -1)) {
                     $("#red-ui-drop-target").css({display:'table'}).focus();
                 }
             });
 
             $('#red-ui-drop-target').on("dragover",function(event) {
                 if ($.inArray("text/plain",event.originalEvent.dataTransfer.types) != -1 ||
-                     $.inArray("Files",event.originalEvent.dataTransfer.types) != -1) {
+                     $.inArray("Files",event.originalEvent.dataTransfer.types) != -1 ||
+                        RED.workspaces.isActiveLocked()) {
                     event.preventDefault();
                 }
             })
@@ -1287,27 +1289,29 @@ RED.clipboard = (function() {
                 hideDropTarget();
             })
             .on("drop",function(event) {
-                try {
-                    if ($.inArray("text/plain",event.originalEvent.dataTransfer.types) != -1) {
-                        var data = event.originalEvent.dataTransfer.getData("text/plain");
-                        data = data.substring(data.indexOf('['),data.lastIndexOf(']')+1);
-                        importNodes(data);
-                    } else if ($.inArray("Files",event.originalEvent.dataTransfer.types) != -1) {
-                        var files = event.originalEvent.dataTransfer.files;
-                        if (files.length === 1) {
-                            var file = files[0];
-                            var reader = new FileReader();
-                            reader.onload = (function(theFile) {
-                                return function(e) {
-                                    importNodes(e.target.result);
-                                };
-                            })(file);
-                            reader.readAsText(file);
+                if (!RED.workspaces.isActiveLocked()) {
+                    try {
+                        if ($.inArray("text/plain",event.originalEvent.dataTransfer.types) != -1) {
+                            var data = event.originalEvent.dataTransfer.getData("text/plain");
+                            data = data.substring(data.indexOf('['),data.lastIndexOf(']')+1);
+                            importNodes(data);
+                        } else if ($.inArray("Files",event.originalEvent.dataTransfer.types) != -1) {
+                            var files = event.originalEvent.dataTransfer.files;
+                            if (files.length === 1) {
+                                var file = files[0];
+                                var reader = new FileReader();
+                                reader.onload = (function(theFile) {
+                                    return function(e) {
+                                        importNodes(e.target.result);
+                                    };
+                                })(file);
+                                reader.readAsText(file);
+                            }
                         }
+                    } catch(err) {
+                        // Ensure any errors throw above doesn't stop the drop target from
+                        // being hidden.
                     }
-                } catch(err) {
-                    // Ensure any errors throw above doesn't stop the drop target from
-                    // being hidden.
                 }
                 hideDropTarget();
                 event.preventDefault();
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/contextMenu.js b/packages/node_modules/@node-red/editor-client/src/js/ui/contextMenu.js
index 8052d561f..f1b95c324 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/contextMenu.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/contextMenu.js
@@ -28,8 +28,9 @@ RED.contextMenu = (function () {
             const isMultipleLinks = !hasSelection && hasLinks && wireLinks.length > 1
             const canDelete = hasSelection || hasLinks
             const isGroup = hasSelection && selection.nodes.length === 1 && selection.nodes[0].type === 'group'
-
+            const canEdit = !RED.workspaces.isActiveLocked()
             const canRemoveFromGroup = hasSelection && !!selection.nodes[0].g
+
             const offset = $("#red-ui-workspace-chart").offset()
 
             let addX = options.x - offset.left + $("#red-ui-workspace-chart").scrollLeft()
@@ -55,12 +56,13 @@ RED.contextMenu = (function () {
                                     splice: isSingleLink ? selection.links[0] : undefined,
                                     // spliceMultiple: isMultipleLinks
                                 })
-                            }
+                            },
+                            disabled: !canEdit
                         },
                         (hasLinks) ? { // has least 1 wire selected
                             label: RED._("contextMenu.junction"),
                             onselect: 'core:split-wires-with-junctions',
-                            disabled: !hasLinks
+                            disabled: !canEdit || !hasLinks
                         } : {
                             label: RED._("contextMenu.junction"),
                             onselect: function () {
@@ -86,41 +88,39 @@ RED.contextMenu = (function () {
                                 RED.nodes.dirty(true);
                                 RED.view.select({nodes: [nn] });
                                 RED.view.redraw(true)
-                            }
+                            },
+                            disabled: !canEdit
                         },
                         {
                             label: RED._("contextMenu.linkNodes"),
                             onselect: 'core:split-wire-with-link-nodes',
-                            disabled: !hasLinks
+                            disabled: !canEdit || !hasLinks
                         }
                     ]
 
 
 
-                }
-            )
-
-            menuItems.push(
+                },
                 null,
                 { onselect: 'core:undo', disabled: RED.history.list().length === 0 },
                 { onselect: 'core:redo', disabled: RED.history.listRedo().length === 0 },
                 null,
-                { onselect: 'core:cut-selection-to-internal-clipboard', label: RED._("keyboard.cutNode"), disabled: !hasSelection },
+                { onselect: 'core:cut-selection-to-internal-clipboard', label: RED._("keyboard.cutNode"), disabled: !canEdit || !hasSelection },
                 { onselect: 'core:copy-selection-to-internal-clipboard', label: RED._("keyboard.copyNode"), disabled: !hasSelection },
-                { onselect: 'core:paste-from-internal-clipboard', label: RED._("keyboard.pasteNode"), disabled: !RED.view.clipboard() },
-                { onselect: 'core:delete-selection', disabled: !canDelete },
+                { onselect: 'core:paste-from-internal-clipboard', label: RED._("keyboard.pasteNode"), disabled: !canEdit || !RED.view.clipboard() },
+                { onselect: 'core:delete-selection', disabled: !canEdit || !canDelete },
                 { onselect: 'core:show-export-dialog', label: RED._("menu.label.export") },
-                { onselect: 'core:select-all-nodes' }
+                { onselect: 'core:select-all-nodes' },
             )
 
-            if (hasSelection) {
+            if (hasSelection && canEdit) {
                 menuItems.push(
                     null,
                     isGroup ?
-                        { onselect: 'core:ungroup-selection', disabled: !isGroup }
-                        : { onselect: 'core:group-selection', disabled: !hasSelection }
+                        { onselect: 'core:ungroup-selection', disabled: !canEdit || !isGroup }
+                        : { onselect: 'core:group-selection', disabled: !canEdit || !hasSelection }
                 )
-                if (canRemoveFromGroup) {
+                if (canRemoveFromGroup && canEdit) {
                     menuItems.push({ onselect: 'core:remove-selection-from-group', label: RED._("menu.label.groupRemoveSelection") })
                 }
 
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/editor.js b/packages/node_modules/@node-red/editor-client/src/js/ui/editor.js
index 0a644ba42..29202a0ab 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/editor.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/editor.js
@@ -1847,9 +1847,6 @@ RED.editor = (function() {
                             workspace.disabled = disabled;
 
                             $("#red-ui-tab-"+(workspace.id.replace(".","-"))).toggleClass('red-ui-workspace-disabled',!!workspace.disabled);
-                            if (workspace.id === RED.workspaces.active()) {
-                                $("#red-ui-workspace").toggleClass("red-ui-workspace-disabled",!!workspace.disabled);
-                            }
                         }
 
                         var locked = $("#node-input-locked").prop("checked");
@@ -1858,9 +1855,6 @@ RED.editor = (function() {
                             editState.changed = true;
                             workspace.locked = locked;
                             $("#red-ui-tab-"+(workspace.id.replace(".","-"))).toggleClass('red-ui-workspace-locked',!!workspace.locked);
-                            // if (workspace.id === RED.workspaces.active()) {
-                            //     $("#red-ui-workspace").toggleClass("red-ui-workspace-locked",!!workspace.locked);
-                            // }
                         }
                         if (editState.changed) {
                             var historyEvent = {
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/editors/panes/flowProperties.js b/packages/node_modules/@node-red/editor-client/src/js/ui/editors/panes/flowProperties.js
index 2db4d0c85..214335f1b 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/editors/panes/flowProperties.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/editors/panes/flowProperties.js
@@ -52,8 +52,6 @@
                     node.info = info;
                 }
                 $("#red-ui-tab-"+(node.id.replace(".","-"))).toggleClass('red-ui-workspace-disabled',!!node.disabled);
-                $("#red-ui-workspace").toggleClass("red-ui-workspace-disabled",!!node.disabled);
-
             }
         }
     });
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/group.js b/packages/node_modules/@node-red/editor-client/src/js/ui/group.js
index add6da6c9..15eda31d5 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/group.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/group.js
@@ -185,6 +185,8 @@ RED.group = (function() {
             var activateMerge = false;
             var activateRemove = false;
             var singleGroupSelected = false;
+            var locked = RED.workspaces.isActiveLocked()
+
             if (activateGroup) {
                 singleGroupSelected = selection.nodes.length === 1 && selection.nodes[0].type === 'group';
                 selection.nodes.forEach(function (n) {
@@ -199,12 +201,12 @@ RED.group = (function() {
                     activateMerge = (selection.nodes.length > 1);
                 }
             }
-            RED.menu.setDisabled("menu-item-group-group", !activateGroup);
-            RED.menu.setDisabled("menu-item-group-ungroup", !activateUngroup);
-            RED.menu.setDisabled("menu-item-group-merge", !activateMerge);
-            RED.menu.setDisabled("menu-item-group-remove", !activateRemove);
+            RED.menu.setDisabled("menu-item-group-group", locked || !activateGroup);
+            RED.menu.setDisabled("menu-item-group-ungroup", locked || !activateUngroup);
+            RED.menu.setDisabled("menu-item-group-merge", locked || !activateMerge);
+            RED.menu.setDisabled("menu-item-group-remove", locked || !activateRemove);
             RED.menu.setDisabled("menu-item-edit-copy-group-style", !singleGroupSelected);
-            RED.menu.setDisabled("menu-item-edit-paste-group-style", !activateUngroup);
+            RED.menu.setDisabled("menu-item-edit-paste-group-style", locked || !activateUngroup);
         });
 
         RED.actions.add("core:group-selection", function() { groupSelection() })
@@ -261,6 +263,7 @@ RED.group = (function() {
         }
     }
     function pasteGroupStyle() {
+        if (RED.workspaces.isActiveLocked()) { return }
         if (RED.view.state() !== RED.state.DEFAULT) { return }
         if (groupStyleClipboard) {
             var selection = RED.view.selection();
@@ -295,6 +298,7 @@ RED.group = (function() {
     }
 
     function groupSelection() {
+        if (RED.workspaces.isActiveLocked()) { return }
         if (RED.view.state() !== RED.state.DEFAULT) { return }
         var selection = RED.view.selection();
         if (selection.nodes) {
@@ -313,6 +317,7 @@ RED.group = (function() {
         }
     }
     function ungroupSelection() {
+        if (RED.workspaces.isActiveLocked()) { return }
         if (RED.view.state() !== RED.state.DEFAULT) { return }
         var selection = RED.view.selection();
         if (selection.nodes) {
@@ -336,6 +341,7 @@ RED.group = (function() {
     }
 
     function ungroup(g) {
+        if (RED.workspaces.isActiveLocked()) { return }
         var nodes = [];
         var parentGroup = RED.nodes.group(g.g);
         g.nodes.forEach(function(n) {
@@ -362,6 +368,7 @@ RED.group = (function() {
     }
 
     function mergeSelection() {
+        if (RED.workspaces.isActiveLocked()) { return }
         if (RED.view.state() !== RED.state.DEFAULT) { return }
         var selection = RED.view.selection();
         if (selection.nodes) {
@@ -431,6 +438,7 @@ RED.group = (function() {
     }
 
     function removeSelection() {
+        if (RED.workspaces.isActiveLocked()) { return }
         if (RED.view.state() !== RED.state.DEFAULT) { return }
         var selection = RED.view.selection();
         if (selection.nodes) {
@@ -458,6 +466,7 @@ RED.group = (function() {
         }
     }
     function createGroup(nodes) {
+        if (RED.workspaces.isActiveLocked()) { return }
         if (nodes.length === 0) {
             return;
         }
@@ -480,7 +489,7 @@ RED.group = (function() {
         }
 
         group.z = nodes[0].z;
-        RED.nodes.addGroup(group);
+        group = RED.nodes.addGroup(group);
 
         try {
             addToGroup(group,nodes);
@@ -563,6 +572,7 @@ RED.group = (function() {
         markDirty(group);
     }
     function removeFromGroup(group, nodes, reparent) {
+        if (RED.workspaces.isActiveLocked()) { return }
         if (!Array.isArray(nodes)) {
             nodes = [nodes];
         }
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/palette.js b/packages/node_modules/@node-red/editor-client/src/js/ui/palette.js
index 9f20cc674..ceaa33775 100755
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/palette.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/palette.js
@@ -282,6 +282,7 @@ RED.palette = (function() {
             var hoverGroup;
             var paletteWidth;
             var paletteTop;
+            var dropEnabled;
             $(d).draggable({
                 helper: 'clone',
                 appendTo: '#red-ui-editor',
@@ -289,6 +290,7 @@ RED.palette = (function() {
                 revertDuration: 200,
                 containment:'#red-ui-main-container',
                 start: function() {
+                    dropEnabled = !RED.nodes.workspace(RED.workspaces.active()).locked;
                     paletteWidth = $("#red-ui-palette").width();
                     paletteTop = $("#red-ui-palette").parent().position().top + $("#red-ui-palette-container").position().top;
                     hoverGroup = null;
@@ -299,96 +301,100 @@ RED.palette = (function() {
                     RED.view.focus();
                 },
                 stop: function() {
-                    d3.select('.red-ui-flow-link-splice').classed('red-ui-flow-link-splice',false);
-                    if (hoverGroup) {
-                        document.getElementById("group_select_"+hoverGroup.id).classList.remove("red-ui-flow-group-hovered");
+                    if (dropEnabled) {
+                        d3.select('.red-ui-flow-link-splice').classed('red-ui-flow-link-splice',false);
+                        if (hoverGroup) {
+                            document.getElementById("group_select_"+hoverGroup.id).classList.remove("red-ui-flow-group-hovered");
+                        }
+                        if (activeGroup) {
+                            document.getElementById("group_select_"+activeGroup.id).classList.remove("red-ui-flow-group-active-hovered");
+                        }
+                        if (spliceTimer) { clearTimeout(spliceTimer); spliceTimer = null; }
+                        if (groupTimer) { clearTimeout(groupTimer); groupTimer = null; }
                     }
-                    if (activeGroup) {
-                        document.getElementById("group_select_"+activeGroup.id).classList.remove("red-ui-flow-group-active-hovered");
-                    }
-                    if (spliceTimer) { clearTimeout(spliceTimer); spliceTimer = null; }
-                    if (groupTimer) { clearTimeout(groupTimer); groupTimer = null; }
                 },
                 drag: function(e,ui) {
                     var paletteNode = getPaletteNode(nt);
                     ui.originalPosition.left = paletteNode.offset().left;
-                    mouseX = ui.position.left - paletteWidth + (ui.helper.width()/2) + chart.scrollLeft();
-                    mouseY = ui.position.top - paletteTop + (ui.helper.height()/2) + chart.scrollTop() + 10;
-                    if (!groupTimer) {
-                        groupTimer = setTimeout(function() {
-                            var mx = mouseX / RED.view.scale();
-                            var my = mouseY / RED.view.scale();
-                            var group = RED.view.getGroupAtPoint(mx,my);
-                            if (group !== hoverGroup) {
-                                if (hoverGroup) {
-                                    document.getElementById("group_select_"+hoverGroup.id).classList.remove("red-ui-flow-group-hovered");
-                                }
-                                if (group) {
-                                    document.getElementById("group_select_"+group.id).classList.add("red-ui-flow-group-hovered");
-                                }
-                                hoverGroup = group;
-                                if (hoverGroup) {
-                                    $(ui.helper).data('group',hoverGroup);
-                                } else {
-                                    $(ui.helper).removeData('group');
-                                }
-                            }
-                            groupTimer = null;
-
-                        },200)
-                    }
-                    if (def.inputs > 0 && def.outputs > 0) {
-                        if (!spliceTimer) {
-                            spliceTimer = setTimeout(function() {
-                                var nodes = [];
-                                var bestDistance = Infinity;
-                                var bestLink = null;
-                                if (chartSVG.getIntersectionList) {
-                                    var svgRect = chartSVG.createSVGRect();
-                                    svgRect.x = mouseX;
-                                    svgRect.y = mouseY;
-                                    svgRect.width = 1;
-                                    svgRect.height = 1;
-                                    nodes = chartSVG.getIntersectionList(svgRect,chartSVG);
-                                } else {
-                                    // Firefox doesn't do getIntersectionList and that
-                                    // makes us sad
-                                    nodes = RED.view.getLinksAtPoint(mouseX,mouseY);
-                                }
+                    if (dropEnabled) {
+                        mouseX = ui.position.left - paletteWidth + (ui.helper.width()/2) + chart.scrollLeft();
+                        mouseY = ui.position.top - paletteTop + (ui.helper.height()/2) + chart.scrollTop() + 10;
+                        if (!groupTimer) {
+                            groupTimer = setTimeout(function() {
                                 var mx = mouseX / RED.view.scale();
                                 var my = mouseY / RED.view.scale();
-                                for (var i=0;i<nodes.length;i++) {
-                                    var node = d3.select(nodes[i]);
-                                    if (node.classed('red-ui-flow-link-background') && !node.classed('red-ui-flow-link-link')) {
-                                        var length = nodes[i].getTotalLength();
-                                        for (var j=0;j<length;j+=10) {
-                                            var p = nodes[i].getPointAtLength(j);
-                                            var d2 = ((p.x-mx)*(p.x-mx))+((p.y-my)*(p.y-my));
-                                            if (d2 < 200 && d2 < bestDistance) {
-                                                bestDistance = d2;
-                                                bestLink = nodes[i];
+                                var group = RED.view.getGroupAtPoint(mx,my);
+                                if (group !== hoverGroup) {
+                                    if (hoverGroup) {
+                                        document.getElementById("group_select_"+hoverGroup.id).classList.remove("red-ui-flow-group-hovered");
+                                    }
+                                    if (group) {
+                                        document.getElementById("group_select_"+group.id).classList.add("red-ui-flow-group-hovered");
+                                    }
+                                    hoverGroup = group;
+                                    if (hoverGroup) {
+                                        $(ui.helper).data('group',hoverGroup);
+                                    } else {
+                                        $(ui.helper).removeData('group');
+                                    }
+                                }
+                                groupTimer = null;
+
+                            },200)
+                        }
+                        if (def.inputs > 0 && def.outputs > 0) {
+                            if (!spliceTimer) {
+                                spliceTimer = setTimeout(function() {
+                                    var nodes = [];
+                                    var bestDistance = Infinity;
+                                    var bestLink = null;
+                                    if (chartSVG.getIntersectionList) {
+                                        var svgRect = chartSVG.createSVGRect();
+                                        svgRect.x = mouseX;
+                                        svgRect.y = mouseY;
+                                        svgRect.width = 1;
+                                        svgRect.height = 1;
+                                        nodes = chartSVG.getIntersectionList(svgRect,chartSVG);
+                                    } else {
+                                        // Firefox doesn't do getIntersectionList and that
+                                        // makes us sad
+                                        nodes = RED.view.getLinksAtPoint(mouseX,mouseY);
+                                    }
+                                    var mx = mouseX / RED.view.scale();
+                                    var my = mouseY / RED.view.scale();
+                                    for (var i=0;i<nodes.length;i++) {
+                                        var node = d3.select(nodes[i]);
+                                        if (node.classed('red-ui-flow-link-background') && !node.classed('red-ui-flow-link-link')) {
+                                            var length = nodes[i].getTotalLength();
+                                            for (var j=0;j<length;j+=10) {
+                                                var p = nodes[i].getPointAtLength(j);
+                                                var d2 = ((p.x-mx)*(p.x-mx))+((p.y-my)*(p.y-my));
+                                                if (d2 < 200 && d2 < bestDistance) {
+                                                    bestDistance = d2;
+                                                    bestLink = nodes[i];
+                                                }
                                             }
                                         }
                                     }
-                                }
-                                if (activeSpliceLink && activeSpliceLink !== bestLink) {
-                                    d3.select(activeSpliceLink.parentNode).classed('red-ui-flow-link-splice',false);
-                                }
-                                if (bestLink) {
-                                    d3.select(bestLink.parentNode).classed('red-ui-flow-link-splice',true)
-                                } else {
-                                    d3.select('.red-ui-flow-link-splice').classed('red-ui-flow-link-splice',false);
-                                }
-                                if (activeSpliceLink !== bestLink) {
-                                    if (bestLink) {
-                                        $(ui.helper).data('splice',d3.select(bestLink).data()[0]);
-                                    } else {
-                                        $(ui.helper).removeData('splice');
+                                    if (activeSpliceLink && activeSpliceLink !== bestLink) {
+                                        d3.select(activeSpliceLink.parentNode).classed('red-ui-flow-link-splice',false);
                                     }
-                                }
-                                activeSpliceLink = bestLink;
-                                spliceTimer = null;
-                            },200);
+                                    if (bestLink) {
+                                        d3.select(bestLink.parentNode).classed('red-ui-flow-link-splice',true)
+                                    } else {
+                                        d3.select('.red-ui-flow-link-splice').classed('red-ui-flow-link-splice',false);
+                                    }
+                                    if (activeSpliceLink !== bestLink) {
+                                        if (bestLink) {
+                                            $(ui.helper).data('splice',d3.select(bestLink).data()[0]);
+                                        } else {
+                                            $(ui.helper).removeData('splice');
+                                        }
+                                    }
+                                    activeSpliceLink = bestLink;
+                                    spliceTimer = null;
+                                },200);
+                            }
                         }
                     }
                 }
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/subflow.js b/packages/node_modules/@node-red/editor-client/src/js/ui/subflow.js
index e979adf65..de987e468 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/subflow.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/subflow.js
@@ -617,6 +617,9 @@ RED.subflow = (function() {
     }
 
     function convertToSubflow() {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         var selection = RED.view.selection();
         if (!selection.nodes) {
             RED.notify(RED._("subflow.errors.noNodesSelected"),"error");
@@ -772,7 +775,7 @@ RED.subflow = (function() {
         }
         subflowInstance._def = RED.nodes.getType(subflowInstance.type);
         RED.editor.validateNode(subflowInstance);
-        RED.nodes.add(subflowInstance);
+        subflowInstance = RED.nodes.add(subflowInstance);
 
         if (containingGroup) {
             RED.group.addToGroup(containingGroup, subflowInstance);
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/tab-config.js b/packages/node_modules/@node-red/editor-client/src/js/ui/tab-config.js
index bb956daa3..e69674b93 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/tab-config.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/tab-config.js
@@ -43,12 +43,15 @@ RED.sidebar.config = (function() {
 
     var categories = {};
 
-    function getOrCreateCategory(name,parent,label) {
+    function getOrCreateCategory(name,parent,label,isLocked) {
         name = name.replace(/\./i,"-");
         if (!categories[name]) {
             var container = $('<div class="red-ui-palette-category red-ui-sidebar-config-category" id="red-ui-sidebar-config-category-'+name+'"></div>').appendTo(parent);
             var header = $('<div class="red-ui-sidebar-config-tray-header red-ui-palette-header"><i class="fa fa-angle-down expanded"></i></div>').appendTo(container);
+            let lockIcon
             if (label) {
+                lockIcon = $('<span style="margin-right: 5px"><i class="fa fa-lock"/></span>').appendTo(header)
+                lockIcon.toggle(!!isLocked)
                 $('<span class="red-ui-palette-node-config-label"/>').text(label).appendTo(header);
             } else {
                 $('<span class="red-ui-palette-node-config-label" data-i18n="sidebar.config.'+name+'">').appendTo(header);
@@ -62,6 +65,7 @@ RED.sidebar.config = (function() {
             var icon = header.find("i");
             var result = {
                 label: label,
+                lockIcon,
                 list: category,
                 size: function() {
                     return result.list.find("li:not(.red-ui-palette-node-config-none)").length
@@ -100,6 +104,9 @@ RED.sidebar.config = (function() {
             });
             categories[name] = result;
         } else {
+            if (isLocked !== undefined && categories[name].lockIcon) {
+                categories[name].lockIcon.toggle(!!isLocked)
+            }
             if (categories[name].label !== label) {
                 categories[name].list.parent().find('.red-ui-palette-node-config-label').text(label);
                 categories[name].label = label;
@@ -216,7 +223,7 @@ RED.sidebar.config = (function() {
 
         RED.nodes.eachWorkspace(function(ws) {
             validList[ws.id.replace(/\./g,"-")] = true;
-            getOrCreateCategory(ws.id,flowCategories,ws.label);
+            getOrCreateCategory(ws.id,flowCategories,ws.label, ws.locked);
         })
         RED.nodes.eachSubflow(function(sf) {
             validList[sf.id.replace(/\./g,"-")] = true;
@@ -274,6 +281,15 @@ RED.sidebar.config = (function() {
                     changes: {},
                     dirty: RED.nodes.dirty()
                 }
+                for (let i = 0; i < selectedNodes.length; i++) {
+                    let node = RED.nodes.node(selectedNodes[i])
+                    if (node.z) {
+                        let ws = RED.nodes.workspace(node.z)
+                        if (ws && ws.locked) {
+                            return
+                        }
+                    }
+                }
                 selectedNodes.forEach(function(id) {
                     var node = RED.nodes.node(id);
                     try {
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/tab-info-outliner.js b/packages/node_modules/@node-red/editor-client/src/js/ui/tab-info-outliner.js
index 20bf627f0..d398cc2d0 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/tab-info-outliner.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/tab-info-outliner.js
@@ -381,7 +381,7 @@ RED.sidebar.info.outliner = (function() {
         objects[ws.id].element.toggleClass("red-ui-info-outline-item-disabled", !!ws.disabled)
         objects[ws.id].treeList.container.toggleClass("red-ui-info-outline-item-disabled", !!ws.disabled)
         objects[ws.id].element.toggleClass("red-ui-info-outline-item-locked", !!ws.locked)
-        // objects[ws.id].treeList.container.toggleClass("red-ui-info-outline-item-disabled", !!ws.disabled)
+        objects[ws.id].treeList.container.toggleClass("red-ui-info-outline-item-locked", !!ws.locked)
         updateSearch();
 
     }
@@ -397,6 +397,7 @@ RED.sidebar.info.outliner = (function() {
         existingObject.element.toggleClass("red-ui-info-outline-item-disabled", !!n.disabled)
         existingObject.treeList.container.toggleClass("red-ui-info-outline-item-disabled", !!n.disabled)
         existingObject.element.toggleClass("red-ui-info-outline-item-locked", !!n.locked)
+        existingObject.treeList.container.toggleClass("red-ui-info-outline-item-locked", !!n.locked)
         updateSearch();
     }
     function onFlowsReorder(order) {
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/view-tools.js b/packages/node_modules/@node-red/editor-client/src/js/ui/view-tools.js
index 1ed5791a6..27d45dcd3 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/view-tools.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/view-tools.js
@@ -15,7 +15,7 @@
  **/
 
 RED.view.tools = (function() {
-
+    'use strict';
     function selectConnected(type) {
         var selection = RED.view.selection();
         var visited = new Set();
@@ -39,6 +39,9 @@ RED.view.tools = (function() {
     }
 
     function alignToGrid() {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         var selection = RED.view.selection();
         if (selection.nodes) {
             var changedNodes = [];
@@ -87,6 +90,9 @@ RED.view.tools = (function() {
     }
 
     function moveSelection(dx,dy) {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         if (moving_set === null) {
             moving_set = [];
             var selection = RED.view.selection();
@@ -153,6 +159,9 @@ RED.view.tools = (function() {
     }
 
     function setSelectedNodeLabelState(labelShown) {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         var selection = RED.view.selection();
         var historyEvents = [];
         var nodes = [];
@@ -439,6 +448,9 @@ RED.view.tools = (function() {
     }
 
     function alignSelectionToEdge(direction) {
+        // if (RED.workspaces.isActiveLocked()) {
+        //     return
+        // }
         var selection = RED.view.selection();
 
         if (selection.nodes && selection.nodes.length > 1) {
@@ -539,8 +551,10 @@ RED.view.tools = (function() {
         }
     }
 
-
     function distributeSelection(direction) {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         var selection = RED.view.selection();
 
         if (selection.nodes && selection.nodes.length > 2) {
@@ -699,6 +713,9 @@ RED.view.tools = (function() {
     }
 
     function reorderSelection(dir) {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         var selection = RED.view.selection();
         if (selection.nodes) {
             var nodesToMove = [];
@@ -734,8 +751,10 @@ RED.view.tools = (function() {
         }
     }
 
-
     function wireSeriesOfNodes() {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         var selection = RED.view.selection();
         if (selection.nodes) {
             if (selection.nodes.length > 1) {
@@ -776,6 +795,9 @@ RED.view.tools = (function() {
     }
 
     function wireNodeToMultiple() {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         var selection = RED.view.selection();
         if (selection.nodes) {
             if (selection.nodes.length > 1) {
@@ -823,6 +845,9 @@ RED.view.tools = (function() {
      * @param {Object || Object[]} wires The wire(s) to split and replace with link-out, link-in nodes.
      */
     function splitWiresWithLinkNodes(wires) {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         let wiresToSplit = wires || (RED.view.selection().links && RED.view.selection().links.filter(e => !e.link));
         if (!wiresToSplit) {
             return
@@ -877,7 +902,6 @@ RED.view.tools = (function() {
             if(!nnLinkOut) {
                 const nLinkOut = RED.view.createNode("link out"); //create link node
                 nnLinkOut = nLinkOut.node;
-                nodeSrcMap[linkOutMapId] = nnLinkOut;
                 let yOffset = 0;
                 if(nSrc.outputs > 1) {
 
@@ -892,7 +916,8 @@ RED.view.tools = (function() {
                     updateNewNodePosXY(nSrc, nnLinkOut, false, RED.view.snapGrid, yOffset);
                 }
                 //add created node
-                RED.nodes.add(nnLinkOut);
+                nnLinkOut = RED.nodes.add(nnLinkOut);
+                nodeSrcMap[linkOutMapId] = nnLinkOut;
                 RED.editor.validateNode(nnLinkOut);
                 history.events.push(nLinkOut.historyEvent);
                 //connect node to link node
@@ -913,10 +938,10 @@ RED.view.tools = (function() {
             if(!nnLinkIn) {
                 const nLinkIn = RED.view.createNode("link in"); //create link node
                 nnLinkIn = nLinkIn.node;
-                nodeTrgMap[nTrg.id] = nnLinkIn;
                 updateNewNodePosXY(nTrg, nnLinkIn, true, RED.view.snapGrid, 0);
                 //add created node
-                RED.nodes.add(nnLinkIn);
+                nnLinkIn = RED.nodes.add(nnLinkIn);
+                nodeTrgMap[nTrg.id] = nnLinkIn;
                 RED.editor.validateNode(nnLinkIn);
                 history.events.push(nLinkIn.historyEvent);
                 //connect node to link node
@@ -991,6 +1016,9 @@ RED.view.tools = (function() {
      * @param {{ renameBlank: boolean, renameClash: boolean, generateHistory: boolean }} options Possible options are `renameBlank`, `renameClash` and `generateHistory`
      */
     function generateNodeNames(node, options) {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         options = Object.assign({
             renameBlank: true,
             renameClash: true,
@@ -1061,6 +1089,9 @@ RED.view.tools = (function() {
     }
 
     function addJunctionsToWires(wires) {
+        if (RED.workspaces.isActiveLocked()) {
+            return
+        }
         let wiresToSplit = wires || (RED.view.selection().links && RED.view.selection().links.filter(e => !e.link));
         if (!wiresToSplit) {
             return
@@ -1131,7 +1162,7 @@ RED.view.tools = (function() {
 
             var nodeGroups = new Set()
 
-            RED.nodes.addJunction(junction)
+            junction = RED.nodes.addJunction(junction)
             addedJunctions.push(junction)
             let newLink
             if (gid === links[0].source.id+":"+links[0].sourcePort) {
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/view.js b/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
index 83215afe4..d783ce941 100755
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/view.js
@@ -54,6 +54,7 @@ RED.view = (function() {
     var spliceTimer;
     var groupHoverTimer;
 
+    var activeFlowLocked = false;
     var activeSubflow = null;
     var activeNodes = [];
     var activeLinks = [];
@@ -411,6 +412,17 @@ RED.view = (function() {
 
             activeSubflow = RED.nodes.subflow(event.workspace);
 
+            if (activeSubflow) {
+                activeFlowLocked = activeSubflow.locked
+            } else {
+                var activeWorkspace = RED.nodes.workspace(event.workspace)
+                if (activeWorkspace) {
+                    activeFlowLocked = activeWorkspace.locked
+                } else {
+                    activeFlowLocked = true
+                }
+            }
+
             RED.menu.setDisabled("menu-item-workspace-edit", activeSubflow || event.workspace === 0);
             RED.menu.setDisabled("menu-item-workspace-delete",event.workspace === 0 || RED.workspaces.count() == 1 || activeSubflow);
 
@@ -439,6 +451,15 @@ RED.view = (function() {
             redraw();
         });
 
+        RED.events.on("flows:change", function(workspace) {
+            if (workspace.id === RED.workspaces.active()) {
+                activeFlowLocked = !!workspace.locked
+                $("#red-ui-workspace").toggleClass("red-ui-workspace-disabled",!!workspace.disabled);
+                $("#red-ui-workspace").toggleClass("red-ui-workspace-locked",!!workspace.locked);
+
+            }
+        })
+
         RED.statusBar.add({
             id: "view-zoom-controls",
             align: "right",
@@ -496,6 +517,9 @@ RED.view = (function() {
         chart.droppable({
             accept:".red-ui-palette-node",
             drop: function( event, ui ) {
+                if (activeFlowLocked) {
+                    return
+                }
                 d3.event = event;
                 var selected_tool = $(ui.draggable[0]).attr("data-palette-type");
                 var result = createNode(selected_tool);
@@ -503,9 +527,7 @@ RED.view = (function() {
                     return;
                 }
                 var historyEvent = result.historyEvent;
-                var nn = result.node;
-
-                RED.nodes.add(nn);
+                var nn = RED.nodes.add(result.node);
 
                 var showLabel = RED.utils.getMessageProperty(RED.settings.get('editor'),"view.view-node-show-label");
                 if (showLabel !== undefined &&  (nn._def.hasOwnProperty("showLabel")?nn._def.showLabel:true) && !nn._def.defaults.hasOwnProperty("l")) {
@@ -632,6 +654,9 @@ RED.view = (function() {
         RED.actions.add("core:copy-selection-to-internal-clipboard",copySelection);
         RED.actions.add("core:cut-selection-to-internal-clipboard",function(){copySelection(true);deleteSelection();});
         RED.actions.add("core:paste-from-internal-clipboard",function(){
+            if (RED.workspaces.isActiveLocked()) {
+                return
+            }
             importNodes(clipboard,{generateIds: clipboardSource === 'copy', generateDefaultNames: clipboardSource === 'copy'});
         });
 
@@ -640,22 +665,27 @@ RED.view = (function() {
         RED.events.on("view:selection-changed", function(selection) {
             var hasSelection = (selection.nodes && selection.nodes.length > 0);
             var hasMultipleSelection = hasSelection && selection.nodes.length > 1;
-            RED.menu.setDisabled("menu-item-edit-cut",!hasSelection);
-            RED.menu.setDisabled("menu-item-edit-copy",!hasSelection);
-            RED.menu.setDisabled("menu-item-edit-select-connected",!hasSelection);
-            RED.menu.setDisabled("menu-item-view-tools-move-to-back",!hasSelection);
-            RED.menu.setDisabled("menu-item-view-tools-move-to-front",!hasSelection);
-            RED.menu.setDisabled("menu-item-view-tools-move-backwards",!hasSelection);
-            RED.menu.setDisabled("menu-item-view-tools-move-forwards",!hasSelection);
+            var hasLinkSelected = selection.links && selection.links.length > 0;
+            var canEdit = !activeFlowLocked && hasSelection
+            var canEditMultiple = !activeFlowLocked && hasMultipleSelection
+            RED.menu.setDisabled("menu-item-edit-cut", !canEdit);
+            RED.menu.setDisabled("menu-item-edit-copy", !hasSelection);
+            RED.menu.setDisabled("menu-item-edit-select-connected", !hasSelection);
+            RED.menu.setDisabled("menu-item-view-tools-move-to-back", !canEdit);
+            RED.menu.setDisabled("menu-item-view-tools-move-to-front", !canEdit);
+            RED.menu.setDisabled("menu-item-view-tools-move-backwards", !canEdit);
+            RED.menu.setDisabled("menu-item-view-tools-move-forwards", !canEdit);
 
-            RED.menu.setDisabled("menu-item-view-tools-align-left",!hasMultipleSelection);
-            RED.menu.setDisabled("menu-item-view-tools-align-center",!hasMultipleSelection);
-            RED.menu.setDisabled("menu-item-view-tools-align-right",!hasMultipleSelection);
-            RED.menu.setDisabled("menu-item-view-tools-align-top",!hasMultipleSelection);
-            RED.menu.setDisabled("menu-item-view-tools-align-middle",!hasMultipleSelection);
-            RED.menu.setDisabled("menu-item-view-tools-align-bottom",!hasMultipleSelection);
-            RED.menu.setDisabled("menu-item-view-tools-distribute-horizontally",!hasMultipleSelection);
-            RED.menu.setDisabled("menu-item-view-tools-distribute-veritcally",!hasMultipleSelection);
+            RED.menu.setDisabled("menu-item-view-tools-align-left", !canEditMultiple);
+            RED.menu.setDisabled("menu-item-view-tools-align-center", !canEditMultiple);
+            RED.menu.setDisabled("menu-item-view-tools-align-right", !canEditMultiple);
+            RED.menu.setDisabled("menu-item-view-tools-align-top", !canEditMultiple);
+            RED.menu.setDisabled("menu-item-view-tools-align-middle", !canEditMultiple);
+            RED.menu.setDisabled("menu-item-view-tools-align-bottom", !canEditMultiple);
+            RED.menu.setDisabled("menu-item-view-tools-distribute-horizontally", !canEditMultiple);
+            RED.menu.setDisabled("menu-item-view-tools-distribute-veritcally", !canEditMultiple);
+
+            RED.menu.setDisabled("menu-item-edit-split-wire-with-links", activeFlowLocked || !hasLinkSelected);
         })
 
         RED.actions.add("core:delete-selection",deleteSelection);
@@ -1045,7 +1075,7 @@ RED.view = (function() {
                             .attr("class", "nr-ui-view-lasso");
                         d3.event.preventDefault();
                     }
-                } else if (d3.event.altKey) {
+                } else if (d3.event.altKey && !activeFlowLocked) {
                     //Alt [+shift] held - Begin slicing
                     clearSelection();
                     mouse_mode = (d3.event.shiftKey) ? RED.state.SLICING_JUNCTION : RED.state.SLICING;
@@ -1059,6 +1089,9 @@ RED.view = (function() {
     }
 
     function showQuickAddDialog(options) {
+        if (activeFlowLocked) {
+            return
+        }
         options = options || {};
         var point = options.position || lastClickPosition;
         var spliceLink = options.splice;
@@ -1238,6 +1271,11 @@ RED.view = (function() {
                 if (showLabel !== undefined && (nn._def.hasOwnProperty("showLabel")?nn._def.showLabel:true) && !nn._def.defaults.hasOwnProperty("l")) {
                     nn.l = showLabel;
                 }
+                if (nn.type === 'junction') {
+                    nn = RED.nodes.addJunction(nn);
+                } else {
+                    nn = RED.nodes.add(nn);
+                }
                 if (quickAddLink) {
                     var drag_line = quickAddLink;
                     var src = null,dst,src_port;
@@ -1340,11 +1378,7 @@ RED.view = (function() {
                         }
                     }
                 }
-                if (nn.type === 'junction') {
-                    RED.nodes.addJunction(nn);
-                } else {
-                    RED.nodes.add(nn);
-                }
+
                 RED.editor.validateNode(nn);
 
                 if (targetGroup) {
@@ -1602,16 +1636,18 @@ RED.view = (function() {
             }
             var d = (mouse_offset[0]-mousePos[0])*(mouse_offset[0]-mousePos[0]) + (mouse_offset[1]-mousePos[1])*(mouse_offset[1]-mousePos[1]);
             if ((d > 3 && !dblClickPrimed) || (dblClickPrimed && d > 10)) {
-                mouse_mode = RED.state.MOVING_ACTIVE;
                 clickElapsed = 0;
-                spliceActive = false;
-                if (movingSet.length() === 1) {
-                    node = movingSet.get(0);
-                    spliceActive = node.n.hasOwnProperty("_def") &&
-                                   ((node.n.hasOwnProperty("inputs") && node.n.inputs > 0) || (!node.n.hasOwnProperty("inputs") && node.n._def.inputs > 0)) &&
-                                   ((node.n.hasOwnProperty("outputs") && node.n.outputs > 0) || (!node.n.hasOwnProperty("outputs") && node.n._def.outputs > 0)) &&
-                                   RED.nodes.filterLinks({ source: node.n }).length === 0 &&
-                                   RED.nodes.filterLinks({ target: node.n }).length === 0;
+                if (!activeFlowLocked) {
+                    mouse_mode = RED.state.MOVING_ACTIVE;
+                    spliceActive = false;
+                    if (movingSet.length() === 1) {
+                        node = movingSet.get(0);
+                        spliceActive = node.n.hasOwnProperty("_def") &&
+                                       ((node.n.hasOwnProperty("inputs") && node.n.inputs > 0) || (!node.n.hasOwnProperty("inputs") && node.n._def.inputs > 0)) &&
+                                       ((node.n.hasOwnProperty("outputs") && node.n.outputs > 0) || (!node.n.hasOwnProperty("outputs") && node.n._def.outputs > 0)) &&
+                                       RED.nodes.filterLinks({ source: node.n }).length === 0 &&
+                                       RED.nodes.filterLinks({ target: node.n }).length === 0;
+                    }
                 }
             }
         } else if (mouse_mode == RED.state.MOVING_ACTIVE || mouse_mode == RED.state.IMPORT_DRAGGING || mouse_mode == RED.state.DETACHED_DRAGGING) {
@@ -2456,6 +2492,7 @@ RED.view = (function() {
     }
 
     function editSelection() {
+        if (RED.workspaces.isActiveLocked()) { return }
         if (movingSet.length() > 0) {
             var node = movingSet.get(0).n;
             if (node.type === "subflow") {
@@ -2471,6 +2508,9 @@ RED.view = (function() {
         if (mouse_mode === RED.state.SELECTING_NODE) {
             return;
         }
+        if (activeFlowLocked) {
+            return
+        }
         if (portLabelHover) {
             portLabelHover.remove();
             portLabelHover = null;
@@ -2786,6 +2826,7 @@ RED.view = (function() {
 
 
     function detachSelectedNodes() {
+        if (RED.workspaces.isActiveLocked()) { return }
         var selection = RED.view.selection();
         if (selection.nodes) {
             const {newLinks, removedLinks} = RED.nodes.detachNodes(selection.nodes);
@@ -2927,7 +2968,7 @@ RED.view = (function() {
         mousedown_node = d;
         mousedown_port_type = portType;
         mousedown_port_index = portIndex || 0;
-        if (mouse_mode !== RED.state.QUICK_JOINING) {
+        if (mouse_mode !== RED.state.QUICK_JOINING && !activeFlowLocked) {
             mouse_mode = RED.state.JOINING;
             document.body.style.cursor = "crosshair";
             if (evt.ctrlKey || evt.metaKey) {
@@ -3367,6 +3408,11 @@ RED.view = (function() {
         }
         if (dblClickPrimed && mousedown_node == d && clickElapsed > 0 && clickElapsed < dblClickInterval) {
             mouse_mode = RED.state.DEFAULT;
+            if (RED.workspaces.isActiveLocked()) {
+                clickElapsed = 0;
+                d3.event.stopPropagation();
+                return
+            }
             if (d.type != "subflow") {
                 if (/^subflow:/.test(d.type) && (d3.event.ctrlKey || d3.event.metaKey)) {
                     RED.workspaces.show(d.type.substring(8));
@@ -3690,7 +3736,6 @@ RED.view = (function() {
             }
             // selectedLinks.clear();
             if (d3.event.button != 2) {
-                mouse_mode = RED.state.MOVING;
                 var mouse = d3.touches(this)[0]||d3.mouse(this);
                 mouse[0] += d.x-d.w/2;
                 mouse[1] += d.y-d.h/2;
@@ -3883,6 +3928,7 @@ RED.view = (function() {
         if (RED.view.DEBUG) {
             console.warn("groupMouseUp", { mouse_mode, event: d3.event });
         }
+        if (RED.workspaces.isActiveLocked()) { return }
         if (dblClickPrimed && mousedown_group == g && clickElapsed > 0 && clickElapsed < dblClickInterval) {
             mouse_mode = RED.state.DEFAULT;
             RED.editor.editGroup(g);
@@ -4053,7 +4099,7 @@ RED.view = (function() {
     function isButtonEnabled(d) {
         var buttonEnabled = true;
         var ws = RED.nodes.workspace(RED.workspaces.active());
-        if (ws && !ws.disabled && !d.d) {
+        if (ws && !ws.disabled && !d.d && !ws.locked) {
             if (d._def.button.hasOwnProperty('enabled')) {
                 if (typeof d._def.button.enabled === "function") {
                     buttonEnabled = d._def.button.enabled.call(d);
@@ -4076,7 +4122,7 @@ RED.view = (function() {
         }
         var activeWorkspace = RED.workspaces.active();
         var ws = RED.nodes.workspace(activeWorkspace);
-        if (ws && !ws.disabled && !d.d) {
+        if (ws && !ws.disabled && !d.d && !ws.locked) {
             if (d._def.button.toggle) {
                 d[d._def.button.toggle] = !d[d._def.button.toggle];
                 d.dirty = true;
@@ -4091,7 +4137,7 @@ RED.view = (function() {
             if (d.dirty) {
                 redraw();
             }
-        } else {
+        } else if (!ws || !ws.locked){
             if (activeSubflow) {
                 RED.notify(RED._("notification.warning", {message:RED._("notification.warnings.nodeActionDisabledSubflow")}),"warning");
             } else {
@@ -4106,14 +4152,15 @@ RED.view = (function() {
     function showTouchMenu(obj,pos) {
         var mdn = mousedown_node;
         var options = [];
-        options.push({name:"delete",disabled:(movingSet.length()===0 && selectedLinks.length() === 0),onselect:function() {deleteSelection();}});
-        options.push({name:"cut",disabled:(movingSet.length()===0),onselect:function() {copySelection(true);deleteSelection();}});
-        options.push({name:"copy",disabled:(movingSet.length()===0),onselect:function() {copySelection();}});
-        options.push({name:"paste",disabled:(clipboard.length===0),onselect:function() {importNodes(clipboard, {generateIds: true, touchImport: true});}});
-        options.push({name:"edit",disabled:(movingSet.length() != 1),onselect:function() { RED.editor.edit(mdn);}});
+        const isActiveLocked = RED.workspaces.isActiveLocked()
+        options.push({name:"delete",disabled:(isActiveLocked || movingSet.length()===0 && selectedLinks.length() === 0),onselect:function() {deleteSelection();}});
+        options.push({name:"cut",disabled:(isActiveLocked || movingSet.length()===0),onselect:function() {copySelection(true);deleteSelection();}});
+        options.push({name:"copy",disabled:(isActiveLocked || movingSet.length()===0),onselect:function() {copySelection();}});
+        options.push({name:"paste",disabled:(isActiveLocked || clipboard.length===0),onselect:function() {importNodes(clipboard, {generateIds: true, touchImport: true});}});
+        options.push({name:"edit",disabled:(isActiveLocked || movingSet.length() != 1),onselect:function() { RED.editor.edit(mdn);}});
         options.push({name:"select",onselect:function() {selectAll();}});
         options.push({name:"undo",disabled:(RED.history.depth() === 0),onselect:function() {RED.history.pop();}});
-        options.push({name:"add",onselect:function() {
+        options.push({name:"add",disabled:isActiveLocked, onselect:function() {
             chartPos = chart.offset();
             showQuickAddDialog({
                 position:[pos[0]-chartPos.left+chart.scrollLeft(),pos[1]-chartPos.top+chart.scrollTop()],
@@ -5811,6 +5858,9 @@ RED.view = (function() {
         if (mouse_mode === RED.state.SELECTING_NODE) {
             return;
         }
+        if (activeFlowLocked) {
+            return
+        }
         var workspaceSelection = RED.workspaces.selection();
         var changed = false;
         if (workspaceSelection.length > 0) {
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/workspaces.js b/packages/node_modules/@node-red/editor-client/src/js/ui/workspaces.js
index 23171fb5a..79f361a39 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/workspaces.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/workspaces.js
@@ -103,6 +103,9 @@ RED.workspaces = (function() {
         if (workspaceTabCount === 1) {
             return;
         }
+        if (ws.locked) {
+            return
+        }
         var workspaceOrder = RED.nodes.getWorkspaceOrder();
         ws._index = workspaceOrder.indexOf(ws.id);
         removeWorkspace(ws);
@@ -123,7 +126,9 @@ RED.workspaces = (function() {
                 RED.editor.editSubflow(subflow);
             }
         } else {
-            RED.editor.editFlow(workspace);
+            if (!workspace.locked) {
+                RED.editor.editFlow(workspace);
+            }
         }
     }
 
@@ -148,6 +153,11 @@ RED.workspaces = (function() {
         let activeWorkspace = tab || RED.nodes.workspace(RED.workspaces.active()) || RED.nodes.subflow(RED.workspaces.active())
         let isFlowDisabled = activeWorkspace ? activeWorkspace.disabled : false
 
+        let isCurrentLocked = RED.workspaces.isActiveLocked()
+        if (tab) {
+            isCurrentLocked = tab.locked
+        }
+
         var menuItems = []
         if (isMenuButton) {
             menuItems.push({
@@ -188,14 +198,30 @@ RED.workspaces = (function() {
                         shortcut: RED.keyboard.getShortcut("core:enable-flow"),
                         onselect: function() {
                             RED.actions.invoke("core:enable-flow", tab?tab.id:undefined)
-                        }
+                        },
+                        disabled: isCurrentLocked
                     } : {
                         label: RED._("workspace.disableFlow"),
                         shortcut: RED.keyboard.getShortcut("core:disable-flow"),
                         onselect: function() {
                             RED.actions.invoke("core:disable-flow", tab?tab.id:undefined)
+                        },
+                        disabled: isCurrentLocked
+                    },
+                    isCurrentLocked? {
+                        label: RED._("workspace.unlockFlow"),
+                        shortcut: RED.keyboard.getShortcut("core:unlock-flow"),
+                        onselect: function() {
+                            RED.actions.invoke('core:unlock-flow', tab?tab.id:undefined)
                         }
-                    }
+                    } : {
+                        label: RED._("workspace.lockFlow"),
+                        shortcut: RED.keyboard.getShortcut("core:lock-flow"),
+                        onselect: function() {
+                            RED.actions.invoke('core:lock-flow', tab?tab.id:undefined)
+                        }
+                    },
+                    null
                 )
             }
             const currentTabs = workspace_tabs.listTabs()
@@ -239,6 +265,7 @@ RED.workspaces = (function() {
                     }
                 }
             )
+
         }
         menuItems.push(
             {
@@ -264,6 +291,7 @@ RED.workspaces = (function() {
                 null,
                 {
                     label: RED._("common.label.delete"),
+                    disabled: isCurrentLocked,
                     onselect: function() {
                         if (tab.type === 'tab') {
                             RED.workspaces.delete(tab)
@@ -302,6 +330,7 @@ RED.workspaces = (function() {
                     activeWorkspace = tab.id;
                     window.location.hash = 'flow/'+tab.id;
                     $("#red-ui-workspace").toggleClass("red-ui-workspace-disabled",!!tab.disabled);
+                    $("#red-ui-workspace").toggleClass("red-ui-workspace-locked",!!tab.locked);
                 } else {
                     $("#red-ui-workspace-chart").hide();
                     activeWorkspace = 0;
@@ -615,7 +644,7 @@ RED.workspaces = (function() {
     }
     function setWorkspaceState(id,disabled) {
         var workspace = RED.nodes.workspace(id||activeWorkspace);
-        if (!workspace) {
+        if (!workspace || workspace.locked) {
             return;
         }
         if (workspace.disabled !== disabled) {
@@ -695,6 +724,8 @@ RED.workspaces = (function() {
     }
 
     function removeWorkspace(ws) {
+        if (ws.locked) { return }
+
         if (!ws) {
             deleteWorkspace(RED.nodes.workspace(activeWorkspace));
         } else {
@@ -792,6 +823,10 @@ RED.workspaces = (function() {
         active: function() {
             return activeWorkspace
         },
+        isActiveLocked: function() {
+            var ws = RED.nodes.workspace(activeWorkspace) || RED.nodes.subflow(activeWorkspace)
+            return ws && ws.locked
+        },
         selection: function() {
             return workspace_tabs.selection();
         },
diff --git a/packages/node_modules/@node-red/editor-client/src/sass/flow.scss b/packages/node_modules/@node-red/editor-client/src/sass/flow.scss
index be8db6c93..3e5be0645 100644
--- a/packages/node_modules/@node-red/editor-client/src/sass/flow.scss
+++ b/packages/node_modules/@node-red/editor-client/src/sass/flow.scss
@@ -68,6 +68,9 @@
     stroke: var(--red-ui-node-border);
     cursor: move;
     stroke-width: 1;
+    .red-ui-workspace-locked & {
+        cursor: pointer;
+    }
 }
 .red-ui-workspace-select-mode {
     g.red-ui-flow-node.red-ui-flow-node-hovered * {
@@ -287,9 +290,11 @@ g.red-ui-flow-node-selected {
     text-anchor:start;
 }
 
-.red-ui-flow-port-hovered {
-    stroke: var(--red-ui-port-selected-color);
-    fill:  var(--red-ui-port-selected-color);
+#red-ui-workspace:not(.red-ui-workspace-locked) {
+    .red-ui-flow-port-hovered {
+        stroke: var(--red-ui-port-selected-color);
+        fill:  var(--red-ui-port-selected-color);
+    }
 }
 
 .red-ui-flow-subflow-port {
diff --git a/packages/node_modules/@node-red/editor-client/src/sass/tab-info.scss b/packages/node_modules/@node-red/editor-client/src/sass/tab-info.scss
index ed526b263..f6bf2473c 100644
--- a/packages/node_modules/@node-red/editor-client/src/sass/tab-info.scss
+++ b/packages/node_modules/@node-red/editor-client/src/sass/tab-info.scss
@@ -514,6 +514,14 @@ div.red-ui-info-table {
             display: none;
         }
     }
+    // If the parent is locked, do not show the display/action buttons when
+    // hovering in the outline
+    .red-ui-info-outline-item-locked .red-ui-info-outline-item & {
+        .red-ui-info-outline-item-control-disable,
+        .red-ui-info-outline-item-control-action {
+            display: none;
+        }
+    }
     button {
         margin-right: 3px
     }
@@ -531,8 +539,6 @@ div.red-ui-info-table {
     }
 }
 
-
-
 .red-ui-icons {
     display: inline-block;
     width: 18px;