graflow: source grooming + demo panels subflow compatible

bzGraflow.js

@@ -288,7 +288,7 @@ class BZgraflow extends Buildoz{
             childEl.style.transform = 'none'
             childEl.style.willChange = ''
             this.dispatchEvent(new CustomEvent('subflowLoaded', {
-                detail: { flowUrl },
+                detail: { subflow: childEl },
                 bubbles: true,
                 composed: true,
             }))
@@ -366,7 +366,7 @@ class BZgraflow extends Buildoz{
             this.hostContainer.style.visibility = 'visible'
             childEl.style.willChange = ''
             this.dispatchEvent(new CustomEvent('subflowExited', {
-                detail: { },
+                detail: { subflow: childEl },
                 bubbles: true,
                 composed: true,
             }))
@@ -611,11 +611,14 @@ class BZgraflow extends Buildoz{
 
         // Compute indexes for each layer (int part) & add sub-index for ports
         // Also compute max width/height for each layer
-        let maxHeight = 0; let maxWidth = 0
-        const layerHeights = []; const layerWidths = []; 
+        let maxHeight = 0
+        let maxWidth = 0
+        const layerHeights = []
+        const layerWidths = []
         const indexes = {} // indexes[nid] = { base: <int>, ports: { [portId]: <float in [0,1)> } }
         for(const layer of layers){
-            let totHeight = 0; let totWidth = 0
+            let totHeight = 0
+            let totWidth = 0
             for(const [idx, nid] of layer.entries()){
                 // Use offset* (not impacted by CSS transforms) to keep autoPlace stable during zoom animations.
                 const bb = this.stagedNodes[nid].getBoundingClientRect()
@@ -938,7 +941,7 @@ class BZgraflow extends Buildoz{
         if(links.some(l => l.from[0] === l.to[0])) return(true) // self-loops
         
         const { adj } = this.buildGraphStructures(nodes, links) 
-        const visiting = new Set(); 
+        const visiting = new Set()
         const visited = new Set()
         const dfs = (nid) => {
             if(visiting.has(nid)) {
@@ -961,7 +964,8 @@ class BZgraflow extends Buildoz{
     
     findBackEdges(nodes, links) {
         const { adj } = this.buildGraphStructures(nodes, links, true)
-        const color = {}; nodes.forEach(n => color[n.id] = 'white')        
+        const color = {}
+        nodes.forEach(n => color[n.id] = 'white')        
         const backEdges = []
         
         function dfs(u) {