Add Subgraphs (#3905)

Co-authored-by: github-actions <github-actions@github.com>

src/components/breadcrumb/SubgraphBreadcrumb.vue

@@ -1,8 +1,5 @@
 <template>
-  <div
-    v-if="workflowStore.isSubgraphActive"
-    class="fixed top-[var(--comfy-topbar-height)] left-[var(--sidebar-width)] p-2 subgraph-breadcrumb"
-  >
+  <div v-if="workflowStore.isSubgraphActive" class="p-2 subgraph-breadcrumb">
     <Breadcrumb
       class="bg-transparent"
       :home="home"
@@ -14,28 +11,30 @@
 </template>
 
 <script setup lang="ts">
-import { useEventListener, whenever } from '@vueuse/core'
+import { useEventListener } from '@vueuse/core'
 import Breadcrumb from 'primevue/breadcrumb'
 import type { MenuItem, MenuItemCommandEvent } from 'primevue/menuitem'
 import { computed } from 'vue'
 
-import { useWorkflowService } from '@/services/workflowService'
 import { useCanvasStore } from '@/stores/graphStore'
+import { useSubgraphNavigationStore } from '@/stores/subgraphNavigationStore'
 import { useWorkflowStore } from '@/stores/workflowStore'
 
-const workflowService = useWorkflowService()
 const workflowStore = useWorkflowStore()
+const navigationStore = useSubgraphNavigationStore()
 
 const workflowName = computed(() => workflowStore.activeWorkflow?.filename)
 
 const items = computed(() => {
-  if (!workflowStore.subgraphNamePath.length) return []
+  if (!navigationStore.navigationStack.length) return []
 
-  return workflowStore.subgraphNamePath.map<MenuItem>((name) => ({
-    label: name,
-    command: async () => {
-      const workflow = workflowStore.getWorkflowByPath(name)
-      if (workflow) await workflowService.openWorkflow(workflow)
+  return navigationStore.navigationStack.map<MenuItem>((subgraph) => ({
+    label: subgraph.name,
+    command: () => {
+      const canvas = useCanvasStore().getCanvas()
+      if (!canvas.graph) throw new TypeError('Canvas has no graph')
+
+      canvas.setGraph(subgraph)
     }
   }))
 })
@@ -43,7 +42,7 @@ const items = computed(() => {
 const home = computed(() => ({
   label: workflowName.value,
   icon: 'pi pi-home',
-  command: async () => {
+  command: () => {
     const canvas = useCanvasStore().getCanvas()
     if (!canvas.graph) throw new TypeError('Canvas has no graph')
 
@@ -55,22 +54,32 @@ const handleItemClick = (event: MenuItemCommandEvent) => {
   event.item.command?.(event)
 }
 
-whenever(
-  () => useCanvasStore().canvas,
-  (canvas) => {
-    useEventListener(canvas.canvas, 'litegraph:set-graph', () => {
-      useWorkflowStore().updateActiveGraph()
-    })
+// Escape exits from the current subgraph.
+useEventListener(document, 'keydown', (event) => {
+  if (event.key === 'Escape') {
+    const canvas = useCanvasStore().getCanvas()
+    if (!canvas.graph) throw new TypeError('Canvas has no graph')
+
+    canvas.setGraph(
+      navigationStore.navigationStack.at(-2) ?? canvas.graph.rootGraph
+    )
   }
-)
+})
 </script>
 
 <style>
 .subgraph-breadcrumb {
   .p-breadcrumb-item-link,
   .p-breadcrumb-item-icon {
+    @apply select-none;
+
     color: #d26565;
-    user-select: none;
+    text-shadow:
+      1px 1px 0 #000,
+      -1px -1px 0 #000,
+      1px -1px 0 #000,
+      -1px 1px 0 #000,
+      0 0 0.375rem #000;
   }
 }
 </style>