Refactor: Composable disentangling (#5695)

## Summary

Prerequisite refactor/cleanup to use a global store instead of having
nodes throw up events to a parent component that stores a reference to a
singleton service that itself bootstraps and synchronizes with a
separate service to maintain a partially reactive but not fully reactive
set of states that describe some but not all aspects of the nodes on
either the litegraph, the vue side, or both.

## Changes

- **What**: Refactoring, the behavior should not change.
- **Dependencies**: A type utility to help with Vue component props

## Review Focus

Is there something about the current structure that this could affect
that would not be caught by our tests or using the application?

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5695-Refactor-Composable-disentangling-2746d73d365081e6938ce656932f3e36)
by [Unito](https://www.unito.io)

src/renderer/extensions/vueNodes/components/LGraphNode.vue

@@ -139,12 +139,12 @@
 </template>
 
 <script setup lang="ts">
+import { storeToRefs } from 'pinia'
 import {
   computed,
   inject,
   onErrorCaptured,
   onMounted,
-  provide,
   ref,
   toRef,
   watch
@@ -153,10 +153,11 @@ import {
 import type { VueNodeData } from '@/composables/graph/useGraphNodeManager'
 import { useErrorHandling } from '@/composables/useErrorHandling'
 import { LiteGraph } from '@/lib/litegraph/src/litegraph'
-import { SelectedNodeIdsKey } from '@/renderer/core/canvas/injectionKeys'
+import { useCanvasStore } from '@/renderer/core/canvas/canvasStore'
 import { useCanvasInteractions } from '@/renderer/core/canvas/useCanvasInteractions'
 import { TransformStateKey } from '@/renderer/core/layout/injectionKeys'
-import { layoutStore } from '@/renderer/core/layout/store/layoutStore'
+import { useNodePointerInteractions } from '@/renderer/extensions/vueNodes/composables/useNodePointerInteractions'
+import { useVueElementTracking } from '@/renderer/extensions/vueNodes/composables/useVueNodeResizeTracking'
 import { useNodeExecutionState } from '@/renderer/extensions/vueNodes/execution/useNodeExecutionState'
 import { useNodeLayout } from '@/renderer/extensions/vueNodes/layout/useNodeLayout'
 import { LODLevel, useLOD } from '@/renderer/extensions/vueNodes/lod/useLOD'
@@ -171,7 +172,6 @@ import {
 } from '@/utils/graphTraversalUtil'
 import { cn } from '@/utils/tailwindUtil'
 
-import { useVueElementTracking } from '../composables/useVueNodeResizeTracking'
 import NodeContent from './NodeContent.vue'
 import NodeHeader from './NodeHeader.vue'
 import NodeSlots from './NodeSlots.vue'
@@ -190,8 +190,8 @@ interface LGraphNodeProps {
 
 const {
   nodeData,
-  position,
-  size,
+  position = { x: 0, y: 0 },
+  size = { width: 100, height: 50 },
   error = null,
   readonly = false,
   zoomLevel = 1
@@ -209,20 +209,13 @@ const emit = defineEmits<{
     slotIndex: number,
     isInput: boolean
   ]
-  dragStart: [event: DragEvent, nodeData: VueNodeData]
   'update:collapsed': [nodeId: string, collapsed: boolean]
   'update:title': [nodeId: string, newTitle: string]
 }>()
 
 useVueElementTracking(nodeData.id, 'node')
 
-// Inject selection state from parent
-const selectedNodeIds = inject(SelectedNodeIdsKey)
-if (!selectedNodeIds) {
-  throw new Error(
-    'SelectedNodeIds not provided - LGraphNode must be used within a component that provides selection state'
-  )
-}
+const { selectedNodeIds } = storeToRefs(useCanvasStore())
 
 // Inject transform state for coordinate conversion
 const transformState = inject(TransformStateKey)
@@ -249,12 +242,7 @@ const hasAnyError = computed(
 const bypassed = computed((): boolean => nodeData.mode === 4)
 
 // Use canvas interactions for proper wheel event handling and pointer event capture control
-const {
-  handleWheel,
-  handlePointer,
-  forwardEventToCanvas,
-  shouldHandleNodePointerEvents
-} = useCanvasInteractions()
+const { handleWheel, shouldHandleNodePointerEvents } = useCanvasInteractions()
 
 // LOD (Level of Detail) system based on zoom level
 const zoomRef = toRef(() => zoomLevel)
@@ -280,14 +268,16 @@ onErrorCaptured((error) => {
 })
 
 // Use layout system for node position and dragging
+const { position: layoutPosition, zIndex, resize } = useNodeLayout(nodeData.id)
 const {
-  position: layoutPosition,
-  zIndex,
-  startDrag,
-  handleDrag: handleLayoutDrag,
-  endDrag,
-  resize
-} = useNodeLayout(nodeData.id)
+  handlePointerDown,
+  handlePointerUp,
+  handlePointerMove,
+  isDragging,
+  dragStyle
+} = useNodePointerInteractions(nodeData, (event, nodeData, wasDragging) => {
+  emit('node-click', event, nodeData, wasDragging)
+})
 
 onMounted(() => {
   if (size && transformState?.camera) {
@@ -300,16 +290,6 @@ onMounted(() => {
   }
 })
 
-// Drag state for styling
-const isDragging = ref(false)
-const dragStyle = computed(() => ({
-  cursor: isDragging.value ? 'grabbing' : 'grab'
-}))
-const lastY = ref(0)
-const lastX = ref(0)
-// Treat tiny pointer jitter as a click, not a drag
-const DRAG_THRESHOLD_PX = 4
-
 // Track collapsed state
 const isCollapsed = ref(nodeData.flags?.collapsed ?? false)
 
@@ -375,60 +355,6 @@ const outlineClass = computed(() => {
 })
 
 // Event handlers
-const handlePointerDown = (event: PointerEvent) => {
-  if (!nodeData) {
-    console.warn('LGraphNode: nodeData is null/undefined in handlePointerDown')
-    return
-  }
-
-  // Don't handle pointer events when canvas is in panning mode - forward to canvas instead
-  if (!shouldHandleNodePointerEvents.value) {
-    forwardEventToCanvas(event)
-    return
-  }
-
-  // Start drag using layout system
-  isDragging.value = true
-
-  // Set Vue node dragging state for selection toolbox
-  layoutStore.isDraggingVueNodes.value = true
-
-  startDrag(event)
-  lastY.value = event.clientY
-  lastX.value = event.clientX
-}
-
-const handlePointerMove = (event: PointerEvent) => {
-  // Check if this should be forwarded to canvas (e.g., space panning, middle mouse)
-  handlePointer(event)
-
-  if (isDragging.value) {
-    void handleLayoutDrag(event)
-  }
-}
-
-const handlePointerUp = (event: PointerEvent) => {
-  if (isDragging.value) {
-    isDragging.value = false
-    void endDrag(event)
-
-    // Clear Vue node dragging state for selection toolbox
-    layoutStore.isDraggingVueNodes.value = false
-  }
-
-  // Don't emit node-click when canvas is in panning mode - forward to canvas instead
-  if (!shouldHandleNodePointerEvents.value) {
-    forwardEventToCanvas(event)
-    return
-  }
-
-  // Emit node-click for selection handling in GraphCanvas
-  const dx = event.clientX - lastX.value
-  const dy = event.clientY - lastY.value
-  const wasDragging = Math.hypot(dx, dy) > DRAG_THRESHOLD_PX
-  emit('node-click', event, nodeData, wasDragging)
-}
-
 const handleCollapse = () => {
   isCollapsed.value = !isCollapsed.value
   // Emit event so parent can sync with LiteGraph if needed
@@ -519,11 +445,4 @@ watch(
   },
   { deep: true }
 )
-
-// Template ref for tooltip positioning
-const nodeContainerRef = ref<HTMLElement>()
-
-// Provide nodeImageUrls and tooltip container to child components
-provide('nodeImageUrls', nodeImageUrls)
-provide('tooltipContainer', nodeContainerRef)
 </script>