graflow: subflow polishing

app/assets/html/bzGraflow/nodesEIC.html

@@ -61,8 +61,7 @@
         align-items: center;
         justify-content: center;
     }
-    .bzgf-node[data-nodetype="refnodein"] .body{ background: #0F0; }
+    .bzgf-node[data-nodetype="refnodein"] .body, .bzgf-node[data-nodetype="refnodeout"] .body{ background: var(--eicui-base-color-grey-25); }
-    .bzgf-node[data-nodetype="refnodeout"] .body{ background: #FF0; }
 
     .bzgf-wire{ stroke: var(--eicui-base-color-info); stroke-width: 4px; stroke-dasharray: 10,5; }
 </style>

app/assets/html/bzGraflow/nodesTest1.html

@@ -96,8 +96,18 @@
     .bzgf-node[data-nodetype="input"] .title,
     .bzgf-node[data-nodetype="console"] .title{ background: #555; }
 
-    .bzgf-node[data-nodetype="refnodein"] .body, .bzgf-node[data-nodetype="refnodeout"] body{ 
+    .bzgf-node[data-nodetype="refnodein"], .bzgf-node[data-nodetype="refnodeout"] {
+        width:3em;
+        height:3em;
+        padding: 2px;
+    }
+    .bzgf-node[data-nodetype="refnodein"] .body, .bzgf-node[data-nodetype="refnodeout"] .body{ 
         border-radius: 50%;
+        width: 3em;
+        height: 3em;
+        display: flex;
+        align-items: center;
+        justify-content: center;
     }
     .bzgf-node[data-nodetype="refnodein"] .body{ background: #0F0; }
     .bzgf-node[data-nodetype="refnodeout"] .body{ background: #FF0; }
@@ -181,11 +191,13 @@
 <template>
     <div class="bzgf-node" data-nodetype="refnodein">
             <div class="body">{parentport}</div>
+            <div class="port" data-type="out" data-id="out1" data-direction="e"></div>
         </div>
 </template>
 
 <template>
     <div class="bzgf-node" data-nodetype="refnodeout">
         <div class="body">{parentport}</div>
+        <div class="port" data-type="in" data-id="in1" data-direction="w"></div>
     </div>
 </template>

app/assets/html/test.html

@@ -58,6 +58,9 @@
                 grflw1.addEventListener('subflowLoaded',
                     (evt) => { evt.target.querySelector('.demooptions').style.display = 'none'; }
                 )
+                grflw1.addEventListener('subflowExited',
+                    (evt) => { evt.target.querySelector('.demooptions').style.display = 'block'; }
+                )
                 document.querySelector('[data-trigger="onAutoplace1H"]').addEventListener('click',
                     (evt) => { grflw1.autoPlace('horizontal', 80, 30, 1000, document.querySelector('[data-id="compunet"]').value) }
                 )

app/assets/json/bzGraflow/testFlow1.json

@@ -7,7 +7,8 @@
                 "coords": { "x": 220, "y": 120}
             },
             {   "nodeType": "inc",
-                "subflow": "/app/assets/json/bzGraflow/testFlowEic.json",
+                "subflow": { 
+                    "url": "/app/assets/json/bzGraflow/testFlowEic.json", 
                     "portLinks": [
                         {   "refNodeType": "refnodein", "refnodePort": "out1",
                             "parentPort": "in1", 
@@ -19,7 +20,8 @@
                             "subflowNode":"aze5", "subflowPort": "out1",
                             "direction": "out" 
                         }
-                ],
+                    ]
+                },
                 "id": "aze2",
                 "coords": { "x": 220, "y": 10}
             },

app/assets/json/bzGraflow/testFlowEic.json

@@ -27,7 +27,22 @@
                     "title": "Data mapping",
                     "subtitle": "Associate content variables with attendees data"
                 },
-                "data": { "a": "a3", "b":"b3"}
+                "data": { "a": "a3", "b":"b3"},
+                "subflow": { 
+                    "url": "/app/assets/json/bzGraflow/testFlowICMP.json", 
+                    "portLinks": [
+                        {   "refNodeType": "refnodein", "refnodePort": "out1",
+                            "parentPort": "in1", 
+                            "subflowNode":"cid", "subflowPort": "in3",
+                            "direction": "in"
+                        },
+                        {   "refNodeType": "refnodeout", "refnodePort": "in1", 
+                            "parentPort": "out1", 
+                            "subflowNode":"signature", "subflowPort": "out2",
+                            "direction": "out" 
+                        }
+                    ]
+                }
             },
             {   "nodeType": "eicBasic",
                 "id": "aze4",

app/thirdparty/buildoz/bzGraflow.js

@@ -202,30 +202,25 @@ class BZgraflow extends Buildoz{
         const parentBB = this.getBoundingClientRect()
 
         const flowNode = this.flow?.nodes?.find(n => n.id === id)
-        const flowUrl = flowNode?.subflow 
+        const flowUrl = flowNode.subflow.url
 
         const childEl = document.createElement('bz-graflow')
         childEl.setAttribute('flow', flowUrl)
         childEl.setAttribute('tension', this.getBZAttribute('tension') || '60')
         // Remember which node we "came from" so exitSubflow() can animate back to it.
         childEl.dataset.enterNodeId = id
-        // Match the clicked node's border so the transition feels like we're "expanding" it.
-        const nodeStyle = getComputedStyle(nodeEl)
-        childEl.style.border = nodeStyle.border
-        childEl.style.borderRadius = nodeStyle.borderRadius
-        childEl.style.backgroundColor = nodeStyle.backgroundColor
         const btnExitSubflow = document.createElement('button')
         btnExitSubflow.classList.add('bzgf-zoom-out')
         this.addIcon(btnExitSubflow, 'zoomout')
         btnExitSubflow.addEventListener('click', () => {
             this.exitSubflow(childEl)
         })
-        childEl.appendChild(btnExitSubflow)
         // Put the child in the exact same viewport rect as the parent (fixed overlay)
         this.invade(this, childEl)
+        childEl.hostContainer.appendChild(btnExitSubflow)
 
         childEl.addEventListener('flowLoaded', (e) => {
-            for(const portLink of flowNode.portLinks){
+            for(const portLink of flowNode.subflow.portLinks){
                 const nid = crypto.randomUUID()
                 childEl.addNode({   
                     "nodeType": portLink.refNodeType,
@@ -280,6 +275,12 @@ class BZgraflow extends Buildoz{
         childEl.addEventListener('transitionend', (e) => {
             if(e.propertyName !== 'transform') return
             this.hostContainer.style.visibility = 'hidden'
+            // Important for nested subflows:
+            // A non-'none' transform on this element creates a containing block, which would make
+            // any nested `position:fixed` subflow overlay position relative to this element instead
+            // of the viewport (showing up as an extra offset like 8px).
+            childEl.style.transform = 'none'
+            childEl.style.willChange = ''
             this.dispatchEvent(new CustomEvent('subflowLoaded', {
                 detail: { flowUrl },
                 bubbles: true,
@@ -330,7 +331,14 @@ class BZgraflow extends Buildoz{
         this.hostContainer.style.opacity = '0'
         this.hostContainer.style.transition = `opacity ${durMs}ms ease-in-out`
 
-        // Ensure child animates (it should already have the transform transition set)
+        // Ensure child animates (it may have had transform cleared after enter)
+        childEl.style.transformOrigin = 'top left'
+        childEl.style.willChange = 'transform'
+        childEl.style.transform = 'translate(var(--tx, 0px), var(--ty, 0px)) scale(var(--sx, 1), var(--sy, 1))'
+        childEl.style.setProperty('--tx', '0px')
+        childEl.style.setProperty('--ty', '0px')
+        childEl.style.setProperty('--sx', 1)
+        childEl.style.setProperty('--sy', 1)
         childEl.style.transition = `transform ${durMs}ms ease-in-out`
         childEl.getBoundingClientRect() // flush
 
@@ -350,6 +358,12 @@ class BZgraflow extends Buildoz{
             // Cleanup: ensure parent is fully visible and no longer hidden
             this.hostContainer.style.opacity = '1'
             this.hostContainer.style.visibility = 'visible'
+            childEl.style.willChange = ''
+            this.dispatchEvent(new CustomEvent('subflowExited', {
+                detail: { },
+                bubbles: true,
+                composed: true,
+            }))
         }, { once:true })
     }