[groups] add basic group functionality to editor

packages/node_modules/@node-red/editor-client/src/js/nodes.js

@@ -27,6 +27,9 @@ RED.nodes = (function() {
     var subflows = {};
     var loadedFlowVersion = null;
 
+    var groups = {};
+    var groupsByZ = {};
+
     var initialLoad;
 
     var dirty = false;
@@ -1444,6 +1447,14 @@ RED.nodes = (function() {
         // var loadedFlowVersion = null;
     }
 
+    function addGroup(group) {
+        groupsByZ[group.z] = groupsByZ[group.z] || [];
+        groupsByZ[group.z].push(group);
+        groups[group.id] = group;
+    }
+
+
+
     return {
         init: function() {
             RED.events.on("registry:node-type-added",function(type) {
@@ -1539,6 +1550,10 @@ RED.nodes = (function() {
         subflow: getSubflow,
         subflowContains: subflowContains,
 
+        addGroup: addGroup,
+        group: function(id) { return groups[id] },
+        groups: function(z) { return groupsByZ[z] },
+
         eachNode: function(cb) {
             for (var n=0;n<nodes.length;n++) {
                 if (cb(nodes[n]) === false) {