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b663f86c9ebda47c77c663ec698f3c709c860e8a
ComfyUI_frontend/src/LGraphNode.ts
Chenlei Hu b663f86c9e Serialize to node pos/size to plain array (#273)
2024-11-04 14:08:09 -05:00

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import type { Dictionary, IContextMenuValue, IFoundSlot, INodeFlags, INodeInputSlot, INodeOutputSlot, IOptionalSlotData, ISlotType, Point, Positionable, ReadOnlyRect, Rect, Size } from "./interfaces"
import type { LGraph } from "./LGraph"
import type { IWidget, TWidgetValue } from "./types/widgets"
import type { ISerialisedNode } from "./types/serialisation"
import type { LGraphCanvas } from "./LGraphCanvas"
import type { CanvasMouseEvent } from "./types/events"
import type { DragAndScale } from "./DragAndScale"
import { LGraphEventMode, NodeSlotType, TitleMode, RenderShape } from "./types/globalEnums"
import { BadgePosition, LGraphBadge } from "./LGraphBadge"
import { type LGraphNodeConstructor, LiteGraph } from "./litegraph"
import { isInsideRectangle, isXyInRectangle } from "./measure"
import { LLink } from "./LLink"
export type NodeId = number | string
export interface INodePropertyInfo {
name: string
type: string
default_value: unknown
}
export type INodeProperties = Dictionary<unknown> & {
horizontal?: boolean
}
interface IMouseOverData {
inputId: number | null
outputId: number | null
overWidget: IWidget | null
}
interface ConnectByTypeOptions {
/** @deprecated Events */
createEventInCase?: boolean
/** Allow our wildcard slot to connect to typed slots on remote node. Default: true */
wildcardToTyped?: boolean
/** Allow our typed slot to connect to wildcard slots on remote node. Default: true */
typedToWildcard?: boolean
}
/** Internal type used for type safety when implementing generic checks for inputs & outputs */
interface IGenericLinkOrLinks {
links?: INodeOutputSlot["links"]
link?: INodeInputSlot["link"]
}
interface FindFreeSlotOptions {
/** Slots matching these types will be ignored. Default: [] */
typesNotAccepted?: ISlotType[]
/** If true, the slot itself is returned instead of the index. Default: false */
returnObj?: boolean
}
/*
title: string
pos: [x,y]
size: [x,y]
input|output: every connection
+ { name:string, type:string, pos: [x,y]=Optional, direction: "input"|"output", links: Array });
general properties:
+ clip_area: if you render outside the node, it will be clipped
+ unsafe_execution: not allowed for safe execution
+ skip_repeated_outputs: when adding new outputs, it wont show if there is one already connected
+ resizable: if set to false it wont be resizable with the mouse
+ horizontal: slots are distributed horizontally
+ widgets_start_y: widgets start at y distance from the top of the node
flags object:
+ collapsed: if it is collapsed
supported callbacks:
+ onAdded: when added to graph (warning: this is called BEFORE the node is configured when loading)
+ onRemoved: when removed from graph
+ onStart: when the graph starts playing
+ onStop: when the graph stops playing
+ onDrawForeground: render the inside widgets inside the node
+ onDrawBackground: render the background area inside the node (only in edit mode)
+ onMouseDown
+ onMouseMove
+ onMouseUp
+ onMouseEnter
+ onMouseLeave
+ onExecute: execute the node
+ onPropertyChanged: when a property is changed in the panel (return true to skip default behaviour)
+ onGetInputs: returns an array of possible inputs
+ onGetOutputs: returns an array of possible outputs
+ onBounding: in case this node has a bigger bounding than the node itself (the callback receives the bounding as [x,y,w,h])
+ onDblClick: double clicked in the node
+ onNodeTitleDblClick: double clicked in the node title
+ onInputDblClick: input slot double clicked (can be used to automatically create a node connected)
+ onOutputDblClick: output slot double clicked (can be used to automatically create a node connected)
+ onConfigure: called after the node has been configured
+ onSerialize: to add extra info when serializing (the callback receives the object that should be filled with the data)
+ onSelected
+ onDeselected
+ onDropItem : DOM item dropped over the node
+ onDropFile : file dropped over the node
+ onConnectInput : if returns false the incoming connection will be canceled
+ onConnectionsChange : a connection changed (new one or removed) (NodeSlotType.INPUT or NodeSlotType.OUTPUT, slot, true if connected, link_info, input_info )
+ onAction: action slot triggered
+ getExtraMenuOptions: to add option to context menu
*/
export interface LGraphNode {
constructor: LGraphNodeConstructor
}
/**
* Base Class for all the node type classes
* @param {String} name a name for the node
*/
export class LGraphNode implements Positionable {
// Static properties used by dynamic child classes
static title?: string
static MAX_CONSOLE?: number
static type?: string
static category?: string
static supported_extensions?: string[]
static filter?: string
static skip_list?: boolean
title: string
graph: LGraph | null = null
id: NodeId
type: string | null = null
inputs: INodeInputSlot[] = []
outputs: INodeOutputSlot[] = []
// Not used
connections: unknown[] = []
properties: INodeProperties = {}
properties_info: INodePropertyInfo[] = []
flags: INodeFlags = {}
widgets?: IWidget[]
locked?: boolean
// Execution order, automatically computed during run
order?: number
mode: LGraphEventMode
last_serialization?: ISerialisedNode
serialize_widgets?: boolean
color: string
bgcolor: string
boxcolor: string
exec_version: number
action_call?: string
execute_triggered: number
action_triggered: number
widgets_up?: boolean
widgets_start_y?: number
lostFocusAt?: number
gotFocusAt?: number
badges: (LGraphBadge | (() => LGraphBadge))[] = []
badgePosition: BadgePosition = BadgePosition.TopLeft
onOutputRemoved?(this: LGraphNode, slot: number): void
onInputRemoved?(this: LGraphNode, slot: number, input: INodeInputSlot): void
_collapsed_width: number
/** Called once at the start of every frame. Caller may change the values in {@link out}, which will be reflected in {@link boundingRect}. */
onBounding?(this: LGraphNode, out: Rect): void
horizontal?: boolean
console?: string[]
_level: number
_shape?: RenderShape
subgraph?: LGraph
skip_subgraph_button?: boolean
mouseOver?: IMouseOverData
redraw_on_mouse?: boolean
// Appears unused
optional_inputs?
// Appears unused
optional_outputs?
resizable?: boolean
clonable?: boolean
_relative_id?: number
clip_area?: boolean
ignore_remove?: boolean
has_errors?: boolean
removable?: boolean
block_delete?: boolean
selected?: boolean
showAdvanced?: boolean
/** @inheritdoc {@link renderArea} */
#renderArea: Float32Array = new Float32Array(4)
/**
* Rect describing the node area, including shadows and any protrusions.
* Determines if the node is visible. Calculated once at the start of every frame.
*/
get renderArea(): ReadOnlyRect {
return this.#renderArea
}
/** @inheritdoc {@link boundingRect} */
#boundingRect: Float32Array = new Float32Array(4)
/**
* Cached node position & area as `x, y, width, height`. Includes changes made by {@link onBounding}, if present.
*
* Determines the node hitbox and other rendering effects. Calculated once at the start of every frame.
*/
get boundingRect(): ReadOnlyRect {
return this.#boundingRect
}
/** {@link pos} and {@link size} values are backed by this {@link Rect}. */
_posSize: Float32Array = new Float32Array(4)
_pos: Point = this._posSize.subarray(0, 2)
_size: Size = this._posSize.subarray(2, 4)
public get pos() {
return this._pos
}
public set pos(value) {
if (!value || value.length < 2) return
this._pos[0] = value[0]
this._pos[1] = value[1]
}
public get size() {
return this._size
}
public set size(value) {
if (!value || value.length < 2) return
this._size[0] = value[0]
this._size[1] = value[1]
}
get shape(): RenderShape {
return this._shape
}
set shape(v: RenderShape | "default" | "box" | "round" | "circle" | "card") {
switch (v) {
case "default":
delete this._shape
break
case "box":
this._shape = RenderShape.BOX
break
case "round":
this._shape = RenderShape.ROUND
break
case "circle":
this._shape = RenderShape.CIRCLE
break
case "card":
this._shape = RenderShape.CARD
break
default:
this._shape = v
}
}
public get is_selected(): boolean {
return this.selected
}
public set is_selected(value: boolean) {
this.selected = value
}
// Used in group node
setInnerNodes?(this: LGraphNode, nodes: LGraphNode[]): void
onConnectInput?(this: LGraphNode, target_slot: number, type: unknown, output: INodeOutputSlot, node: LGraphNode, slot: number): boolean
onConnectOutput?(this: LGraphNode, slot: number, type: unknown, input: INodeInputSlot, target_node: number | LGraphNode, target_slot: number): boolean
onResize?(this: LGraphNode, size: Size): void
onPropertyChanged?(this: LGraphNode, name: string, value: unknown, prev_value?: unknown): boolean
onConnectionsChange?(this: LGraphNode, type: ISlotType, index: number, isConnected: boolean, link_info: LLink, inputOrOutput: INodeInputSlot | INodeOutputSlot): void
onInputAdded?(this: LGraphNode, input: INodeInputSlot): void
onOutputAdded?(this: LGraphNode, output: INodeOutputSlot): void
onConfigure?(this: LGraphNode, serialisedNode: ISerialisedNode): void
onSerialize?(this: LGraphNode, serialised: ISerialisedNode): any
onExecute?(this: LGraphNode, param?: unknown, options?: { action_call?: any }): void
onAction?(this: LGraphNode, action: string, param: unknown, options: { action_call?: string }): void
onDrawBackground?(this: LGraphNode, ctx: CanvasRenderingContext2D, canvas: LGraphCanvas, canvasElement: HTMLCanvasElement, mousePosition: Point): void
onNodeCreated?(this: LGraphNode): void
/**
* Callback invoked by {@link connect} to override the target slot index. Its return value overrides the target index selection.
* @param target_slot The current input slot index
* @param requested_slot The originally requested slot index - could be negative, or if using (deprecated) name search, a string
* @returns {number | null} If a number is returned, the connection will be made to that input index.
* If an invalid index or non-number (false, null, NaN etc) is returned, the connection will be cancelled.
*/
onBeforeConnectInput?(this: LGraphNode, target_slot: number, requested_slot?: number | string): number | false | null
onShowCustomPanelInfo?(this: LGraphNode, panel: any): void
onAddPropertyToPanel?(this: LGraphNode, pName: string, panel: any): boolean
onWidgetChanged?(this: LGraphNode, name: string, value: unknown, old_value: unknown, w: IWidget): void
onDeselected?(this: LGraphNode): void
onKeyUp?(this: LGraphNode, e: KeyboardEvent): void
onKeyDown?(this: LGraphNode, e: KeyboardEvent): void
onSelected?(this: LGraphNode): void
getExtraMenuOptions?(this: LGraphNode, canvas: LGraphCanvas, options: IContextMenuValue[]): IContextMenuValue[]
getMenuOptions?(this: LGraphNode, canvas: LGraphCanvas): IContextMenuValue[]
onAdded?(this: LGraphNode, graph: LGraph): void
onDrawCollapsed?(this: LGraphNode, ctx: CanvasRenderingContext2D, cavnas: LGraphCanvas): boolean
onDrawForeground?(this: LGraphNode, ctx: CanvasRenderingContext2D, canvas: LGraphCanvas, canvasElement: HTMLCanvasElement): void
onMouseLeave?(this: LGraphNode, e: CanvasMouseEvent): void
getSlotMenuOptions?(this: LGraphNode, slot: IFoundSlot): IContextMenuValue[]
// FIXME: Re-typing
onDropItem?(this: LGraphNode, event: Event): boolean
onDropData?(this: LGraphNode, data: string | ArrayBuffer, filename: any, file: any): void
onDropFile?(this: LGraphNode, file: any): void
onInputClick?(this: LGraphNode, index: number, e: CanvasMouseEvent): void
onInputDblClick?(this: LGraphNode, index: number, e: CanvasMouseEvent): void
onOutputClick?(this: LGraphNode, index: number, e: CanvasMouseEvent): void
onOutputDblClick?(this: LGraphNode, index: number, e: CanvasMouseEvent): void
// TODO: Return type
onGetPropertyInfo?(this: LGraphNode, property: string): any
onNodeOutputAdd?(this: LGraphNode, value): void
onNodeInputAdd?(this: LGraphNode, value): void
onMenuNodeInputs?(this: LGraphNode, entries: IOptionalSlotData<INodeInputSlot>[]): IOptionalSlotData<INodeInputSlot>[]
onMenuNodeOutputs?(this: LGraphNode, entries: IOptionalSlotData<INodeOutputSlot>[]): IOptionalSlotData<INodeOutputSlot>[]
onGetInputs?(this: LGraphNode): INodeInputSlot[]
onGetOutputs?(this: LGraphNode): INodeOutputSlot[]
onMouseUp?(this: LGraphNode, e: CanvasMouseEvent, pos: Point): void
onMouseEnter?(this: LGraphNode, e: CanvasMouseEvent): void
onMouseDown?(this: LGraphNode, e: CanvasMouseEvent, pos: Point, canvas: LGraphCanvas): boolean
onDblClick?(this: LGraphNode, e: CanvasMouseEvent, pos: Point, canvas: LGraphCanvas): void
onNodeTitleDblClick?(this: LGraphNode, e: CanvasMouseEvent, pos: Point, canvas: LGraphCanvas): void
onDrawTitle?(this: LGraphNode, ctx: CanvasRenderingContext2D): void
onDrawTitleText?(this: LGraphNode, ctx: CanvasRenderingContext2D, title_height: number, size: Size, scale: number, title_text_font: string, selected: boolean): void
onDrawTitleBox?(this: LGraphNode, ctx: CanvasRenderingContext2D, title_height: number, size: Size, scale: number): void
onDrawTitleBar?(this: LGraphNode, ctx: CanvasRenderingContext2D, title_height: number, size: Size, scale: number, fgcolor: any): void
onRemoved?(this: LGraphNode): void
onMouseMove?(this: LGraphNode, e: MouseEvent, pos: Point, arg2: LGraphCanvas): void
onPropertyChange?(this: LGraphNode): void
updateOutputData?(this: LGraphNode, origin_slot: number): void
isValidWidgetLink?(slot_index: number, node: LGraphNode, overWidget: IWidget): boolean | undefined
constructor(title: string) {
this.id = LiteGraph.use_uuids ? LiteGraph.uuidv4() : -1
this.title = title || "Unnamed"
this.size = [LiteGraph.NODE_WIDTH, 60]
this.pos = [10, 10]
}
/**
* configure a node from an object containing the serialized info
*/
configure(info: ISerialisedNode): void {
if (this.graph) {
this.graph._version++
}
for (const j in info) {
if (j == "properties") {
//i don't want to clone properties, I want to reuse the old container
for (const k in info.properties) {
this.properties[k] = info.properties[k]
this.onPropertyChanged?.(k, info.properties[k])
}
continue
}
if (info[j] == null) {
continue
} else if (typeof info[j] == "object") {
//object
if (this[j]?.configure) {
this[j]?.configure(info[j])
} else {
this[j] = LiteGraph.cloneObject(info[j], this[j])
}
} //value
else {
this[j] = info[j]
}
}
if (!info.title) {
this.title = this.constructor.title
}
if (this.inputs) {
for (let i = 0; i < this.inputs.length; ++i) {
const input = this.inputs[i]
const link = this.graph ? this.graph._links.get(input.link) : null
this.onConnectionsChange?.(NodeSlotType.INPUT, i, true, link, input)
this.onInputAdded?.(input)
}
}
if (this.outputs) {
for (let i = 0; i < this.outputs.length; ++i) {
const output = this.outputs[i]
if (!output.links) {
continue
}
for (let j = 0; j < output.links.length; ++j) {
const link = this.graph ? this.graph._links.get(output.links[j]) : null
this.onConnectionsChange?.(NodeSlotType.OUTPUT, i, true, link, output)
}
this.onOutputAdded?.(output)
}
}
if (this.widgets) {
for (let i = 0; i < this.widgets.length; ++i) {
const w = this.widgets[i]
if (!w)
continue
if (w.options?.property && (this.properties[w.options.property] != undefined))
w.value = JSON.parse(JSON.stringify(this.properties[w.options.property]))
}
if (info.widgets_values) {
for (let i = 0; i < info.widgets_values.length; ++i) {
if (this.widgets[i]) {
this.widgets[i].value = info.widgets_values[i]
}
}
}
}
// Sync the state of this.resizable.
if (this.pinned) this.pin(true)
this.onConfigure?.(info)
}
/**
* serialize the content
*/
serialize(): ISerialisedNode {
//create serialization object
const o: ISerialisedNode = {
id: this.id,
type: this.type,
pos: [this.pos[0], this.pos[1]],
size: [this.size[0], this.size[1]],
flags: LiteGraph.cloneObject(this.flags),
order: this.order,
mode: this.mode,
showAdvanced: this.showAdvanced
}
//special case for when there were errors
if (this.constructor === LGraphNode && this.last_serialization)
return this.last_serialization
if (this.inputs) o.inputs = this.inputs
if (this.outputs) {
//clear outputs last data (because data in connections is never serialized but stored inside the outputs info)
for (let i = 0; i < this.outputs.length; i++) {
delete this.outputs[i]._data
}
o.outputs = this.outputs
}
if (this.title && this.title != this.constructor.title) o.title = this.title
if (this.properties) o.properties = LiteGraph.cloneObject(this.properties)
if (this.widgets && this.serialize_widgets) {
o.widgets_values = []
for (let i = 0; i < this.widgets.length; ++i) {
if (this.widgets[i])
o.widgets_values[i] = this.widgets[i].value
else
o.widgets_values[i] = null
}
}
if (!o.type) o.type = this.constructor.type
if (this.color) o.color = this.color
if (this.bgcolor) o.bgcolor = this.bgcolor
if (this.boxcolor) o.boxcolor = this.boxcolor
if (this.shape) o.shape = this.shape
if (this.onSerialize?.(o)) console.warn("node onSerialize shouldnt return anything, data should be stored in the object pass in the first parameter")
return o
}
/* Creates a clone of this node */
clone(): LGraphNode {
const node = LiteGraph.createNode(this.type)
if (!node) return null
//we clone it because serialize returns shared containers
const data = LiteGraph.cloneObject(this.serialize())
//remove links
if (data.inputs) {
for (let i = 0; i < data.inputs.length; ++i) {
data.inputs[i].link = null
}
}
if (data.outputs) {
for (let i = 0; i < data.outputs.length; ++i) {
if (data.outputs[i].links) {
data.outputs[i].links.length = 0
}
}
}
delete data.id
if (LiteGraph.use_uuids) data.id = LiteGraph.uuidv4()
//remove links
node.configure(data)
return node
}
/**
* serialize and stringify
*/
toString(): string {
return JSON.stringify(this.serialize())
}
/**
* get the title string
*/
getTitle(): string {
return this.title || this.constructor.title
}
/**
* sets the value of a property
* @param {String} name
* @param {*} value
*/
setProperty(name: string, value: TWidgetValue): void {
this.properties ||= {}
if (value === this.properties[name])
return
const prev_value = this.properties[name]
this.properties[name] = value
//abort change
if (this.onPropertyChanged?.(name, value, prev_value) === false)
this.properties[name] = prev_value
if (this.widgets) //widgets could be linked to properties
for (let i = 0; i < this.widgets.length; ++i) {
const w = this.widgets[i]
if (!w)
continue
if (w.options.property == name) {
w.value = value
break
}
}
}
/**
* sets the output data
* @param {number} slot
* @param {*} data
*/
setOutputData(slot: number, data: unknown): void {
if (!this.outputs) return
//this maybe slow and a niche case
//if(slot && slot.constructor === String)
// slot = this.findOutputSlot(slot);
if (slot == -1 || slot >= this.outputs.length) return
const output_info = this.outputs[slot]
if (!output_info) return
//store data in the output itself in case we want to debug
output_info._data = data
//if there are connections, pass the data to the connections
if (this.outputs[slot].links) {
for (let i = 0; i < this.outputs[slot].links.length; i++) {
const link_id = this.outputs[slot].links[i]
const link = this.graph._links.get(link_id)
if (link)
link.data = data
}
}
}
/**
* sets the output data type, useful when you want to be able to overwrite the data type
* @param {number} slot
* @param {String} datatype
*/
setOutputDataType(slot: number, type: ISlotType): void {
if (!this.outputs) return
if (slot == -1 || slot >= this.outputs.length) return
const output_info = this.outputs[slot]
if (!output_info) return
//store data in the output itself in case we want to debug
output_info.type = type
//if there are connections, pass the data to the connections
if (this.outputs[slot].links) {
for (let i = 0; i < this.outputs[slot].links.length; i++) {
const link_id = this.outputs[slot].links[i]
this.graph._links.get(link_id).type = type
}
}
}
/**
* Retrieves the input data (data traveling through the connection) from one slot
* @param {number} slot
* @param {boolean} force_update if set to true it will force the connected node of this slot to output data into this link
* @return {*} data or if it is not connected returns undefined
*/
getInputData(slot: number, force_update?: boolean): unknown {
if (!this.inputs) return
if (slot >= this.inputs.length || this.inputs[slot].link == null) return
const link_id = this.inputs[slot].link
const link = this.graph._links.get(link_id)
//bug: weird case but it happens sometimes
if (!link) return null
if (!force_update) return link.data
//special case: used to extract data from the incoming connection before the graph has been executed
const node = this.graph.getNodeById(link.origin_id)
if (!node) return link.data
if (node.updateOutputData) {
node.updateOutputData(link.origin_slot)
} else {
node.onExecute?.()
}
return link.data
}
/**
* Retrieves the input data type (in case this supports multiple input types)
* @param {number} slot
* @return {String} datatype in string format
*/
getInputDataType(slot: number): ISlotType {
if (!this.inputs) return null
if (slot >= this.inputs.length || this.inputs[slot].link == null) return null
const link_id = this.inputs[slot].link
const link = this.graph._links.get(link_id)
//bug: weird case but it happens sometimes
if (!link) return null
const node = this.graph.getNodeById(link.origin_id)
if (!node) return link.type
const output_info = node.outputs[link.origin_slot]
return output_info
? output_info.type
: null
}
/**
* Retrieves the input data from one slot using its name instead of slot number
* @param {String} slot_name
* @param {boolean} force_update if set to true it will force the connected node of this slot to output data into this link
* @return {*} data or if it is not connected returns null
*/
getInputDataByName(slot_name: string, force_update: boolean): unknown {
const slot = this.findInputSlot(slot_name)
return slot == -1
? null
: this.getInputData(slot, force_update)
}
/**
* tells you if there is a connection in one input slot
* @param {number} slot
* @return {boolean}
*/
isInputConnected(slot: number): boolean {
if (!this.inputs) return false
return slot < this.inputs.length && this.inputs[slot].link != null
}
/**
* tells you info about an input connection (which node, type, etc)
* @param {number} slot
* @return {Object} object or null { link: id, name: string, type: string or 0 }
*/
getInputInfo(slot: number): INodeInputSlot {
return !this.inputs || !(slot < this.inputs.length)
? null
: this.inputs[slot]
}
/**
* Returns the link info in the connection of an input slot
* @param {number} slot
* @return {LLink} object or null
*/
getInputLink(slot: number): LLink | null {
if (!this.inputs) return null
if (slot < this.inputs.length) {
const slot_info = this.inputs[slot]
return this.graph._links.get(slot_info.link)
}
return null
}
/**
* returns the node connected in the input slot
* @param {number} slot
* @return {LGraphNode} node or null
*/
getInputNode(slot: number): LGraphNode {
if (!this.inputs) return null
if (slot >= this.inputs.length) return null
const input = this.inputs[slot]
if (!input || input.link === null) return null
const link_info = this.graph._links.get(input.link)
if (!link_info) return null
return this.graph.getNodeById(link_info.origin_id)
}
/**
* returns the value of an input with this name, otherwise checks if there is a property with that name
* @param {string} name
* @return {*} value
*/
getInputOrProperty(name: string): unknown {
if (!this.inputs || !this.inputs.length) {
return this.properties ? this.properties[name] : null
}
for (let i = 0, l = this.inputs.length; i < l; ++i) {
const input_info = this.inputs[i]
if (name == input_info.name && input_info.link != null) {
const link = this.graph._links.get(input_info.link)
if (link) return link.data
}
}
return this.properties[name]
}
/**
* tells you the last output data that went in that slot
* @param {number} slot
* @return {Object} object or null
*/
getOutputData(slot: number): unknown {
if (!this.outputs) return null
if (slot >= this.outputs.length) return null
const info = this.outputs[slot]
return info._data
}
/**
* tells you info about an output connection (which node, type, etc)
* @param {number} slot
* @return {Object} object or null { name: string, type: string, links: [ ids of links in number ] }
*/
getOutputInfo(slot: number): INodeOutputSlot {
return !this.outputs || !(slot < this.outputs.length)
? null
: this.outputs[slot]
}
/**
* tells you if there is a connection in one output slot
* @param {number} slot
* @return {boolean}
*/
isOutputConnected(slot: number): boolean {
if (!this.outputs) return false
return slot < this.outputs.length && this.outputs[slot].links?.length > 0
}
/**
* tells you if there is any connection in the output slots
* @return {boolean}
*/
isAnyOutputConnected(): boolean {
if (!this.outputs) return false
for (let i = 0; i < this.outputs.length; ++i) {
if (this.outputs[i].links && this.outputs[i].links.length) {
return true
}
}
return false
}
/**
* retrieves all the nodes connected to this output slot
* @param {number} slot
* @return {array}
*/
getOutputNodes(slot: number): LGraphNode[] {
if (!this.outputs || this.outputs.length == 0) return null
if (slot >= this.outputs.length) return null
const output = this.outputs[slot]
if (!output.links || output.links.length == 0) return null
const r: LGraphNode[] = []
for (let i = 0; i < output.links.length; i++) {
const link_id = output.links[i]
const link = this.graph._links.get(link_id)
if (link) {
const target_node = this.graph.getNodeById(link.target_id)
if (target_node) {
r.push(target_node)
}
}
}
return r
}
addOnTriggerInput(): number {
const trigS = this.findInputSlot("onTrigger")
if (trigS == -1) { //!trigS ||
const input = this.addInput("onTrigger", LiteGraph.EVENT, { optional: true, nameLocked: true })
return this.findInputSlot("onTrigger")
}
return trigS
}
addOnExecutedOutput(): number {
const trigS = this.findOutputSlot("onExecuted")
if (trigS == -1) { //!trigS ||
const output = this.addOutput("onExecuted", LiteGraph.ACTION, { optional: true, nameLocked: true })
return this.findOutputSlot("onExecuted")
}
return trigS
}
onAfterExecuteNode(param: unknown, options?: { action_call?: any }) {
const trigS = this.findOutputSlot("onExecuted")
if (trigS != -1) {
//console.debug(this.id+":"+this.order+" triggering slot onAfterExecute");
//console.debug(param);
//console.debug(options);
this.triggerSlot(trigS, param, null, options)
}
}
changeMode(modeTo: number): boolean {
switch (modeTo) {
case LGraphEventMode.ON_EVENT:
// this.addOnExecutedOutput();
break
case LGraphEventMode.ON_TRIGGER:
this.addOnTriggerInput()
this.addOnExecutedOutput()
break
case LGraphEventMode.NEVER:
break
case LGraphEventMode.ALWAYS:
break
// @ts-expect-error Not impl.
case LiteGraph.ON_REQUEST:
break
default:
return false
break
}
this.mode = modeTo
return true
}
/**
* Triggers the node code execution, place a boolean/counter to mark the node as being executed
* @param {*} param
* @param {*} options
*/
doExecute(param?: unknown, options?: { action_call?: any }): void {
options = options || {}
if (this.onExecute) {
// enable this to give the event an ID
options.action_call ||= this.id + "_exec_" + Math.floor(Math.random() * 9999)
this.graph.nodes_executing[this.id] = true //.push(this.id);
this.onExecute(param, options)
this.graph.nodes_executing[this.id] = false //.pop();
// save execution/action ref
this.exec_version = this.graph.iteration
if (options?.action_call) {
this.action_call = options.action_call // if (param)
this.graph.nodes_executedAction[this.id] = options.action_call
}
}
this.execute_triggered = 2 // the nFrames it will be used (-- each step), means "how old" is the event
this.onAfterExecuteNode?.(param, options) // callback
}
/**
* Triggers an action, wrapped by logics to control execution flow
* @param {String} action name
* @param {*} param
*/
actionDo(action: string, param: unknown, options: { action_call?: string }): void {
options = options || {}
if (this.onAction) {
// enable this to give the event an ID
options.action_call ||= this.id + "_" + (action ? action : "action") + "_" + Math.floor(Math.random() * 9999)
this.graph.nodes_actioning[this.id] = (action ? action : "actioning") //.push(this.id);
this.onAction(action, param, options)
this.graph.nodes_actioning[this.id] = false //.pop();
// save execution/action ref
if (options?.action_call) {
this.action_call = options.action_call // if (param)
this.graph.nodes_executedAction[this.id] = options.action_call
}
}
this.action_triggered = 2 // the nFrames it will be used (-- each step), means "how old" is the event
this.onAfterExecuteNode?.(param, options)
}
/**
* Triggers an event in this node, this will trigger any output with the same name
* @param {String} event name ( "on_play", ... ) if action is equivalent to false then the event is send to all
* @param {*} param
*/
trigger(action: string, param: unknown, options: { action_call?: any }): void {
if (!this.outputs || !this.outputs.length) {
return
}
if (this.graph)
this.graph._last_trigger_time = LiteGraph.getTime()
for (let i = 0; i < this.outputs.length; ++i) {
const output = this.outputs[i]
if (!output || output.type !== LiteGraph.EVENT || (action && output.name != action))
continue
this.triggerSlot(i, param, null, options)
}
}
/**
* Triggers a slot event in this node: cycle output slots and launch execute/action on connected nodes
* @param {Number} slot the index of the output slot
* @param {*} param
* @param {Number} link_id [optional] in case you want to trigger and specific output link in a slot
*/
triggerSlot(slot: number, param: unknown, link_id: number, options: { action_call?: any }): void {
options = options || {}
if (!this.outputs) return
if (slot == null) {
console.error("slot must be a number")
return
}
if (typeof slot !== "number")
console.warn("slot must be a number, use node.trigger('name') if you want to use a string")
const output = this.outputs[slot]
if (!output) return
const links = output.links
if (!links || !links.length) return
if (this.graph)
this.graph._last_trigger_time = LiteGraph.getTime()
//for every link attached here
for (let k = 0; k < links.length; ++k) {
const id = links[k]
//to skip links
if (link_id != null && link_id != id) continue
const link_info = this.graph._links.get(id)
//not connected
if (!link_info) continue
link_info._last_time = LiteGraph.getTime()
const node = this.graph.getNodeById(link_info.target_id)
//node not found?
if (!node) continue
if (node.mode === LGraphEventMode.ON_TRIGGER) {
// generate unique trigger ID if not present
if (!options.action_call) options.action_call = this.id + "_trigg_" + Math.floor(Math.random() * 9999)
// -- wrapping node.onExecute(param); --
node.doExecute?.(param, options)
}
else if (node.onAction) {
// generate unique action ID if not present
if (!options.action_call) options.action_call = this.id + "_act_" + Math.floor(Math.random() * 9999)
//pass the action name
const target_connection = node.inputs[link_info.target_slot]
// wrap node.onAction(target_connection.name, param);
node.actionDo(target_connection.name, param, options)
}
}
}
/**
* clears the trigger slot animation
* @param {Number} slot the index of the output slot
* @param {Number} link_id [optional] in case you want to trigger and specific output link in a slot
*/
clearTriggeredSlot(slot: number, link_id: number): void {
if (!this.outputs) return
const output = this.outputs[slot]
if (!output) return
const links = output.links
if (!links || !links.length) return
//for every link attached here
for (let k = 0; k < links.length; ++k) {
const id = links[k]
//to skip links
if (link_id != null && link_id != id) continue
const link_info = this.graph._links.get(id)
//not connected
if (!link_info) continue
link_info._last_time = 0
}
}
/**
* changes node size and triggers callback
* @param {vec2} size
*/
setSize(size: Size): void {
this.size = size
this.onResize?.(this.size)
}
/**
* add a new property to this node
* @param {string} name
* @param {*} default_value
* @param {string} type string defining the output type ("vec3","number",...)
* @param {Object} extra_info this can be used to have special properties of the property (like values, etc)
*/
addProperty(name: string,
default_value: unknown,
type?: string,
extra_info?: Dictionary<unknown>): INodePropertyInfo {
const o: INodePropertyInfo = { name: name, type: type, default_value: default_value }
if (extra_info) {
for (const i in extra_info) {
o[i] = extra_info[i]
}
}
this.properties_info ||= []
this.properties_info.push(o)
this.properties ||= {}
this.properties[name] = default_value
return o
}
/**
* add a new output slot to use in this node
* @param {string} name
* @param {string} type string defining the output type ("vec3","number",...)
* @param {Object} extra_info this can be used to have special properties of an output (label, special color, position, etc)
*/
addOutput(name?: string, type?: ISlotType, extra_info?: object): INodeOutputSlot {
const output = { name: name, type: type, links: null }
if (extra_info) {
for (const i in extra_info) {
output[i] = extra_info[i]
}
}
this.outputs ||= []
this.outputs.push(output)
this.onOutputAdded?.(output)
if (LiteGraph.auto_load_slot_types) LiteGraph.registerNodeAndSlotType(this, type, true)
this.setSize(this.computeSize())
this.setDirtyCanvas(true, true)
return output
}
/**
* add a new output slot to use in this node
* @param {Array} array of triplets like [[name,type,extra_info],[...]]
*/
addOutputs(array: [string, ISlotType, Record<string, unknown>][]): void {
for (let i = 0; i < array.length; ++i) {
const info = array[i]
const o = { name: info[0], type: info[1], links: null }
if (array[2]) {
for (const j in info[2]) {
o[j] = info[2][j]
}
}
this.outputs ||= []
this.outputs.push(o)
this.onOutputAdded?.(o)
if (LiteGraph.auto_load_slot_types) LiteGraph.registerNodeAndSlotType(this, info[1], true)
}
this.setSize(this.computeSize())
this.setDirtyCanvas(true, true)
}
/**
* remove an existing output slot
* @param {number} slot
*/
removeOutput(slot: number): void {
this.disconnectOutput(slot)
this.outputs.splice(slot, 1)
for (let i = slot; i < this.outputs.length; ++i) {
if (!this.outputs[i] || !this.outputs[i].links)
continue
const links = this.outputs[i].links
for (let j = 0; j < links.length; ++j) {
const link = this.graph._links.get(links[j])
if (!link) continue
link.origin_slot -= 1
}
}
this.setSize(this.computeSize())
this.onOutputRemoved?.(slot)
this.setDirtyCanvas(true, true)
}
/**
* add a new input slot to use in this node
* @param {string} name
* @param {string} type string defining the input type ("vec3","number",...), it its a generic one use 0
* @param {Object} extra_info this can be used to have special properties of an input (label, color, position, etc)
*/
addInput(name: string, type: ISlotType, extra_info?: object): INodeInputSlot {
type = type || 0
const input: INodeInputSlot = { name: name, type: type, link: null }
if (extra_info) {
for (const i in extra_info) {
input[i] = extra_info[i]
}
}
this.inputs ||= []
this.inputs.push(input)
this.setSize(this.computeSize())
this.onInputAdded?.(input)
LiteGraph.registerNodeAndSlotType(this, type)
this.setDirtyCanvas(true, true)
return input
}
/**
* add several new input slots in this node
* @param {Array} array of triplets like [[name,type,extra_info],[...]]
*/
addInputs(array: [string, ISlotType, Record<string, unknown>][]): void {
for (let i = 0; i < array.length; ++i) {
const info = array[i]
const o: INodeInputSlot = { name: info[0], type: info[1], link: null }
// TODO: Checking the wrong variable here - confirm no downstream consumers, then remove.
if (array[2]) {
for (const j in info[2]) {
o[j] = info[2][j]
}
}
this.inputs ||= []
this.inputs.push(o)
this.onInputAdded?.(o)
LiteGraph.registerNodeAndSlotType(this, info[1])
}
this.setSize(this.computeSize())
this.setDirtyCanvas(true, true)
}
/**
* remove an existing input slot
* @param {number} slot
*/
removeInput(slot: number): void {
this.disconnectInput(slot)
const slot_info = this.inputs.splice(slot, 1)
for (let i = slot; i < this.inputs.length; ++i) {
if (!this.inputs[i]) continue
const link = this.graph._links.get(this.inputs[i].link)
if (!link) continue
link.target_slot -= 1
}
this.setSize(this.computeSize())
this.onInputRemoved?.(slot, slot_info[0])
this.setDirtyCanvas(true, true)
}
/**
* add an special connection to this node (used for special kinds of graphs)
* @param {string} name
* @param {string} type string defining the input type ("vec3","number",...)
* @param {[x,y]} pos position of the connection inside the node
* @param {string} direction if is input or output
*/
addConnection(name: string, type: string, pos: Point, direction: string) {
const o = {
name: name,
type: type,
pos: pos,
direction: direction,
links: null
}
this.connections.push(o)
return o
}
/**
* computes the minimum size of a node according to its inputs and output slots
* @param out
* @return the total size
*/
computeSize(out?: Size): Size {
const ctorSize = this.constructor.size
if (ctorSize) return [ctorSize[0], ctorSize[1]]
let rows = Math.max(
this.inputs ? this.inputs.length : 1,
this.outputs ? this.outputs.length : 1
)
const size = out || new Float32Array([0, 0])
rows = Math.max(rows, 1)
const font_size = LiteGraph.NODE_TEXT_SIZE //although it should be graphcanvas.inner_text_font size
const title_width = compute_text_size(this.title)
let input_width = 0
let output_width = 0
if (this.inputs) {
for (let i = 0, l = this.inputs.length; i < l; ++i) {
const input = this.inputs[i]
const text = input.label || input.name || ""
const text_width = compute_text_size(text)
if (input_width < text_width)
input_width = text_width
}
}
if (this.outputs) {
for (let i = 0, l = this.outputs.length; i < l; ++i) {
const output = this.outputs[i]
const text = output.label || output.name || ""
const text_width = compute_text_size(text)
if (output_width < text_width)
output_width = text_width
}
}
size[0] = Math.max(input_width + output_width + 10, title_width)
size[0] = Math.max(size[0], LiteGraph.NODE_WIDTH)
if (this.widgets?.length)
size[0] = Math.max(size[0], LiteGraph.NODE_WIDTH * 1.5)
size[1] = (this.constructor.slot_start_y || 0) + rows * LiteGraph.NODE_SLOT_HEIGHT
let widgets_height = 0
if (this.widgets?.length) {
for (let i = 0, l = this.widgets.length; i < l; ++i) {
const widget = this.widgets[i]
if (widget.hidden || (widget.advanced && !this.showAdvanced)) continue;
widgets_height += widget.computeSize
? widget.computeSize(size[0])[1] + 4
: LiteGraph.NODE_WIDGET_HEIGHT + 4
}
widgets_height += 8
}
//compute height using widgets height
if (this.widgets_up)
size[1] = Math.max(size[1], widgets_height)
else if (this.widgets_start_y != null)
size[1] = Math.max(size[1], widgets_height + this.widgets_start_y)
else
size[1] += widgets_height
function compute_text_size(text: string) {
return text
? font_size * text.length * 0.6
: 0
}
if (this.constructor.min_height && size[1] < this.constructor.min_height) {
size[1] = this.constructor.min_height
}
//margin
size[1] += 6
return size
}
inResizeCorner(canvasX: number, canvasY: number): boolean {
const rows = this.outputs ? this.outputs.length : 1
const outputs_offset = (this.constructor.slot_start_y || 0) + rows * LiteGraph.NODE_SLOT_HEIGHT
return isInsideRectangle(canvasX,
canvasY,
this.pos[0] + this.size[0] - 15,
this.pos[1] + Math.max(this.size[1] - 15, outputs_offset),
20,
20
)
}
/**
* returns all the info available about a property of this node.
*
* @param {String} property name of the property
* @return {Object} the object with all the available info
*/
getPropertyInfo(property: string) {
let info = null
//there are several ways to define info about a property
//legacy mode
if (this.properties_info) {
for (let i = 0; i < this.properties_info.length; ++i) {
if (this.properties_info[i].name == property) {
info = this.properties_info[i]
break
}
}
}
//litescene mode using the constructor
if (this.constructor["@" + property])
info = this.constructor["@" + property]
if (this.constructor.widgets_info?.[property])
info = this.constructor.widgets_info[property]
//litescene mode using the constructor
if (!info && this.onGetPropertyInfo) {
info = this.onGetPropertyInfo(property)
}
info ||= {}
info.type ||= typeof this.properties[property]
if (info.widget == "combo")
info.type = "enum"
return info
}
/**
* Defines a widget inside the node, it will be rendered on top of the node, you can control lots of properties
*
* @param {String} type the widget type (could be "number","string","combo"
* @param {String} name the text to show on the widget
* @param {String} value the default value
* @param {Function|String} callback function to call when it changes (optionally, it can be the name of the property to modify)
* @param {Object} options the object that contains special properties of this widget
* @return {Object} the created widget object
*/
addWidget(type: string, name: string, value: any, callback: IWidget["callback"], options?: any): IWidget {
this.widgets ||= []
if (!options && callback && typeof callback === "object") {
options = callback
callback = null
}
//options can be the property name
if (options && typeof options === "string")
options = { property: options }
//callback can be the property name
if (callback && typeof callback === "string") {
options ||= {}
options.property = callback
callback = null
}
if (callback && typeof callback !== "function") {
console.warn("addWidget: callback must be a function")
callback = null
}
const w: IWidget = {
// @ts-expect-error Type check or just assert?
type: type.toLowerCase(),
name: name,
value: value,
callback: callback,
options: options || {}
}
if (w.options.y !== undefined) {
w.y = w.options.y
}
if (!callback && !w.options.callback && !w.options.property) {
console.warn("LiteGraph addWidget(...) without a callback or property assigned")
}
if (type == "combo" && !w.options.values) {
throw "LiteGraph addWidget('combo',...) requires to pass values in options: { values:['red','blue'] }"
}
this.widgets.push(w)
this.setSize(this.computeSize())
return w
}
addCustomWidget(custom_widget: IWidget): IWidget {
this.widgets ||= []
this.widgets.push(custom_widget)
return custom_widget
}
move(deltaX: number, deltaY: number): void {
this.pos[0] += deltaX
this.pos[1] += deltaY
}
/**
* Internal method to measure the node for rendering. Prefer {@link boundingRect} where possible.
*
* Populates {@link out} with the results in graph space.
* Adjusts for title and collapsed status, but does not call {@link onBounding}.
* @param out `x, y, width, height` are written to this array.
* @param pad Expands the area by this amount on each side. Default: 0
*/
measure(out: Rect, pad = 0): void {
const titleMode = this.constructor.title_mode
const renderTitle = titleMode != TitleMode.TRANSPARENT_TITLE && titleMode != TitleMode.NO_TITLE
const titleHeight = renderTitle ? LiteGraph.NODE_TITLE_HEIGHT : 0
out[0] = this.pos[0] - pad
out[1] = this.pos[1] + -titleHeight - pad
if (!this.flags?.collapsed) {
out[2] = this.size[0] + (2 * pad)
out[3] = this.size[1] + titleHeight + (2 * pad)
} else {
out[2] = (this._collapsed_width || LiteGraph.NODE_COLLAPSED_WIDTH) + (2 * pad)
out[3] = LiteGraph.NODE_TITLE_HEIGHT + (2 * pad)
}
}
/**
* returns the bounding of the object, used for rendering purposes
* @param out {Float32Array[4]?} [optional] a place to store the output, to free garbage
* @param includeExternal {boolean?} [optional] set to true to include the shadow and connection points in the bounding calculation
* @return {Float32Array[4]} the bounding box in format of [topleft_cornerx, topleft_cornery, width, height]
*/
getBounding(out?: Rect, includeExternal?: boolean): Rect {
out ||= new Float32Array(4)
const rect = includeExternal ? this.renderArea : this.boundingRect
out[0] = rect[0]
out[1] = rect[1]
out[2] = rect[2]
out[3] = rect[3]
return out
}
/**
* Calculates the render area of this node, populating both {@link boundingRect} and {@link renderArea}.
* Called automatically at the start of every frame.
*/
updateArea(): void {
const bounds = this.#boundingRect
this.measure(bounds)
this.onBounding?.(bounds)
const renderArea = this.#renderArea
renderArea.set(bounds)
// 4 offset for collapsed node connection points
renderArea[0] -= 4
renderArea[1] -= 4
// Add shadow & left offset
renderArea[2] += 6 + 4
// Add shadow & top offsets
renderArea[3] += 5 + 4
}
/**
* checks if a point is inside the shape of a node
* @param {number} x
* @param {number} y
* @return {boolean}
*/
isPointInside(x: number, y: number): boolean {
return isXyInRectangle(x, y, this.boundingRect)
}
/**
* checks if a point is inside a node slot, and returns info about which slot
* @param x
* @param y
* @returns if found the object contains { input|output: slot object, slot: number, link_pos: [x,y] }
*/
getSlotInPosition(x: number, y: number): IFoundSlot | null {
//search for inputs
const link_pos = new Float32Array(2)
if (this.inputs) {
for (let i = 0, l = this.inputs.length; i < l; ++i) {
const input = this.inputs[i]
this.getConnectionPos(true, i, link_pos)
if (isInsideRectangle(x, y, link_pos[0] - 10, link_pos[1] - 5, 20, 10)) {
return { input, slot: i, link_pos }
}
}
}
if (this.outputs) {
for (let i = 0, l = this.outputs.length; i < l; ++i) {
const output = this.outputs[i]
this.getConnectionPos(false, i, link_pos)
if (isInsideRectangle(x, y, link_pos[0] - 10, link_pos[1] - 5, 20, 10)) {
return { output, slot: i, link_pos }
}
}
}
return null
}
/**
* Returns the input slot with a given name (used for dynamic slots), -1 if not found
* @param name the name of the slot
* @param returnObj if the obj itself wanted
* @returns the slot (-1 if not found)
*/
findInputSlot<TReturn extends false>(name: string, returnObj?: TReturn): number
findInputSlot<TReturn extends true>(name: string, returnObj?: TReturn): INodeInputSlot
findInputSlot(name: string, returnObj: boolean = false) {
if (!this.inputs) return -1
for (let i = 0, l = this.inputs.length; i < l; ++i) {
if (name == this.inputs[i].name) {
return !returnObj ? i : this.inputs[i]
}
}
return -1
}
/**
* returns the output slot with a given name (used for dynamic slots), -1 if not found
* @param {string} name the name of the slot
* @param {boolean} returnObj if the obj itself wanted
* @return {number | INodeOutputSlot} the slot (-1 if not found)
*/
findOutputSlot<TReturn extends false>(name: string, returnObj?: TReturn): number
findOutputSlot<TReturn extends true>(name: string, returnObj?: TReturn): INodeOutputSlot
findOutputSlot(name: string, returnObj: boolean = false) {
if (!this.outputs) return -1
for (let i = 0, l = this.outputs.length; i < l; ++i) {
if (name == this.outputs[i].name) {
return !returnObj ? i : this.outputs[i]
}
}
return -1
}
/**
* Finds the first free input slot.
* @param {object} optsIn
* @return The index of the first matching slot, the slot itself if returnObj is true, or -1 if not found.
*/
findInputSlotFree<TReturn extends false>(optsIn?: FindFreeSlotOptions & { returnObj?: TReturn }): number
findInputSlotFree<TReturn extends true>(optsIn?: FindFreeSlotOptions & { returnObj?: TReturn }): INodeInputSlot
findInputSlotFree(optsIn?: FindFreeSlotOptions) {
return this.#findFreeSlot(this.inputs, optsIn)
}
/**
* Finds the first free output slot.
* @param {object} optsIn
* @return The index of the first matching slot, the slot itself if returnObj is true, or -1 if not found.
*/
findOutputSlotFree<TReturn extends false>(optsIn?: FindFreeSlotOptions & { returnObj?: TReturn }): number
findOutputSlotFree<TReturn extends true>(optsIn?: FindFreeSlotOptions & { returnObj?: TReturn }): INodeOutputSlot
findOutputSlotFree(optsIn?: FindFreeSlotOptions) {
return this.#findFreeSlot(this.outputs, optsIn)
}
/**
* Finds the next free slot
* @param slots The slots to search, i.e. this.inputs or this.outputs
* @param options Options
*/
#findFreeSlot<TSlot extends INodeInputSlot | INodeOutputSlot>(slots: TSlot[], options?: FindFreeSlotOptions): TSlot | number {
const defaults = {
returnObj: false,
typesNotAccepted: []
}
const opts = Object.assign(defaults, options || {})
const length = slots?.length
if (!(length > 0)) return -1
for (let i = 0; i < length; ++i) {
const slot: TSlot & IGenericLinkOrLinks = slots[i]
if (!slot || slot.link || slot.links?.length) continue
if (opts.typesNotAccepted?.includes?.(slot.type)) continue
return !opts.returnObj ? i : slot
}
return -1
}
/**
* findSlotByType for INPUTS
*/
findInputSlotByType<TReturn extends false>(type: ISlotType, returnObj?: TReturn, preferFreeSlot?: boolean, doNotUseOccupied?: boolean): number
findInputSlotByType<TReturn extends true>(type: ISlotType, returnObj?: TReturn, preferFreeSlot?: boolean, doNotUseOccupied?: boolean): INodeInputSlot
findInputSlotByType(type: ISlotType, returnObj?: boolean, preferFreeSlot?: boolean, doNotUseOccupied?: boolean) {
return this.#findSlotByType(this.inputs, type, returnObj, preferFreeSlot, doNotUseOccupied)
}
/**
* findSlotByType for OUTPUTS
*/
findOutputSlotByType<TReturn extends false>(type: ISlotType, returnObj?: TReturn, preferFreeSlot?: boolean, doNotUseOccupied?: boolean): number
findOutputSlotByType<TReturn extends true>(type: ISlotType, returnObj?: TReturn, preferFreeSlot?: boolean, doNotUseOccupied?: boolean): INodeOutputSlot
findOutputSlotByType(type: ISlotType, returnObj?: boolean, preferFreeSlot?: boolean, doNotUseOccupied?: boolean) {
return this.#findSlotByType(this.outputs, type, returnObj, preferFreeSlot, doNotUseOccupied)
}
/**
* returns the output (or input) slot with a given type, -1 if not found
* @param {boolean} input uise inputs instead of outputs
* @param {string} type the type of the slot
* @param {boolean} returnObj if the obj itself wanted
* @param {boolean} preferFreeSlot if we want a free slot (if not found, will return the first of the type anyway)
* @return {number_or_object} the slot (-1 if not found)
*/
findSlotByType<TSlot extends true | false, TReturn extends false>(input: TSlot, type: ISlotType, returnObj?: TReturn, preferFreeSlot?: boolean, doNotUseOccupied?: boolean): number
findSlotByType<TSlot extends true, TReturn extends true>(input: TSlot, type: ISlotType, returnObj?: TReturn, preferFreeSlot?: boolean, doNotUseOccupied?: boolean): INodeInputSlot
findSlotByType<TSlot extends false, TReturn extends true>(input: TSlot, type: ISlotType, returnObj?: TReturn, preferFreeSlot?: boolean, doNotUseOccupied?: boolean): INodeOutputSlot
findSlotByType(input: boolean, type: ISlotType, returnObj?: boolean, preferFreeSlot?: boolean, doNotUseOccupied?: boolean) {
return input
? this.#findSlotByType(this.inputs, type, returnObj, preferFreeSlot, doNotUseOccupied)
: this.#findSlotByType(this.outputs, type, returnObj, preferFreeSlot, doNotUseOccupied)
}
/**
* Finds a matching slot from those provided, returning the slot itself or its index in {@link slots}.
* @param slots Slots to search (this.inputs or this.outputs)
* @param type Type of slot to look for
* @param returnObj If true, returns the slot itself. Otherwise, the index.
* @param preferFreeSlot Prefer a free slot, but if none are found, fall back to an occupied slot.
* @param doNotUseOccupied Do not fall back to occupied slots.
* @see {findSlotByType}
* @see {findOutputSlotByType}
* @see {findInputSlotByType}
* @returns If a match is found, the slot if returnObj is true, otherwise the index. If no matches are found, -1
*/
#findSlotByType<TSlot extends INodeInputSlot | INodeOutputSlot>(slots: TSlot[], type: ISlotType, returnObj?: boolean, preferFreeSlot?: boolean, doNotUseOccupied?: boolean): TSlot | number {
const length = slots?.length
if (!length) return -1
// !! empty string type is considered 0, * !!
if (type == "" || type == "*") type = 0
const sourceTypes = String(type).toLowerCase().split(",")
// Run the search
let occupiedSlot: number | TSlot | null = null
for (let i = 0; i < length; ++i) {
const slot: TSlot & IGenericLinkOrLinks = slots[i]
const destTypes = slot.type == "0" || slot.type == "*"
? ["0"]
: String(slot.type).toLowerCase().split(",")
for (const sourceType of sourceTypes) {
// TODO: Remove _event_ entirely.
const source = sourceType == "_event_" ? LiteGraph.EVENT : sourceType
for (const destType of destTypes) {
const dest = destType == "_event_" ? LiteGraph.EVENT : destType
if (source == dest || source === "*" || dest === "*") {
if (preferFreeSlot && (slot.links?.length || slot.link != null)) {
// In case we can't find a free slot.
occupiedSlot ??= returnObj ? slot : i
continue
}
return returnObj ? slot : i
}
}
}
}
return doNotUseOccupied ? -1 : occupiedSlot ?? -1
}
/**
* Determines the slot index to connect to when attempting to connect by type.
*
* @param findInputs If true, searches for an input. Otherwise, an output.
* @param node The node at the other end of the connection.
* @param slotType The type of slot at the other end of the connection.
* @param options Search restrictions to adhere to.
* @see {connectByType}
* @see {connectByTypeOutput}
*/
findConnectByTypeSlot(
findInputs: boolean,
node: LGraphNode,
slotType: ISlotType,
options?: ConnectByTypeOptions
): number | null {
// LEGACY: Old options names
if (options && typeof options === "object") {
if ("firstFreeIfInputGeneralInCase" in options) options.wildcardToTyped = !!options.firstFreeIfInputGeneralInCase
if ("firstFreeIfOutputGeneralInCase" in options) options.wildcardToTyped = !!options.firstFreeIfOutputGeneralInCase
if ("generalTypeInCase" in options) options.typedToWildcard = !!options.generalTypeInCase
}
const optsDef: ConnectByTypeOptions = {
createEventInCase: true,
wildcardToTyped: true,
typedToWildcard: true
}
const opts = Object.assign(optsDef, options)
if (node && typeof node === "number") {
node = this.graph.getNodeById(node)
}
const slot = node.findSlotByType(findInputs, slotType, false, true)
if (slot >= 0 && slot !== null) return slot
// TODO: Remove or reimpl. events. WILL CREATE THE onTrigger IN SLOT
if (opts.createEventInCase && slotType == LiteGraph.EVENT) {
if (findInputs) return -1
if (LiteGraph.do_add_triggers_slots) return node.addOnExecutedOutput()
}
// connect to the first general output slot if not found a specific type and
if (opts.typedToWildcard) {
const generalSlot = node.findSlotByType(findInputs, 0, false, true, true)
if (generalSlot >= 0) return generalSlot
}
// connect to the first free input slot if not found a specific type and this output is general
if (opts.wildcardToTyped && (slotType == 0 || slotType == "*" || slotType == "")) {
const opt = { typesNotAccepted: [LiteGraph.EVENT] }
const nonEventSlot = findInputs
? node.findInputSlotFree(opt)
: node.findOutputSlotFree(opt)
if (nonEventSlot >= 0) return nonEventSlot
}
return null
}
/**
* connect this node output to the input of another node BY TYPE
* @param {number} slot (could be the number of the slot or the string with the name of the slot)
* @param {LGraphNode} target_node the target node
* @param {string} target_slotType the input slot type of the target node
* @return {Object} the link_info is created, otherwise null
*/
connectByType(slot: number | string, target_node: LGraphNode, target_slotType: ISlotType, optsIn?: ConnectByTypeOptions): LLink | null {
const slotIndex = this.findConnectByTypeSlot(true, target_node, target_slotType, optsIn)
if (slotIndex !== null) return this.connect(slot, target_node, slotIndex)
console.debug("[connectByType]: no way to connect type: ", target_slotType, " to node: ", target_node)
return null
}
/**
* connect this node input to the output of another node BY TYPE
* @method connectByType
* @param {number | string} slot (could be the number of the slot or the string with the name of the slot)
* @param {LGraphNode} source_node the target node
* @param {string} source_slotType the output slot type of the target node
* @return {Object} the link_info is created, otherwise null
*/
connectByTypeOutput(slot: number | string, source_node: LGraphNode, source_slotType: ISlotType, optsIn?: ConnectByTypeOptions): LLink | null {
// LEGACY: Old options names
if (typeof optsIn === "object") {
if ("firstFreeIfInputGeneralInCase" in optsIn) optsIn.wildcardToTyped = !!optsIn.firstFreeIfInputGeneralInCase
if ("generalTypeInCase" in optsIn) optsIn.typedToWildcard = !!optsIn.generalTypeInCase
}
const slotIndex = this.findConnectByTypeSlot(false, source_node, source_slotType, optsIn)
if (slotIndex !== null) return source_node.connect(slotIndex, this, slot)
console.debug("[connectByType]: no way to connect type: ", source_slotType, " to node: ", source_node)
return null
}
/**
* Connect an output of this node to an input of another node
* @param {number | string} slot (could be the number of the slot or the string with the name of the slot)
* @param {LGraphNode} target_node the target node
* @param {number | string} target_slot the input slot of the target node (could be the number of the slot or the string with the name of the slot, or -1 to connect a trigger)
* @return {Object} the link_info is created, otherwise null
*/
connect(slot: number | string, target_node: LGraphNode, target_slot: ISlotType): LLink | null {
// Allow legacy API support for searching target_slot by string, without mutating the input variables
let targetIndex: number
const graph = this.graph
if (!graph) {
//could be connected before adding it to a graph
//due to link ids being associated with graphs
console.log("Connect: Error, node doesn't belong to any graph. Nodes must be added first to a graph before connecting them.")
return null
}
//seek for the output slot
if (typeof slot === "string") {
slot = this.findOutputSlot(slot)
if (slot == -1) {
if (LiteGraph.debug) console.log("Connect: Error, no slot of name " + slot)
return null
}
} else if (!this.outputs || slot >= this.outputs.length) {
if (LiteGraph.debug) console.log("Connect: Error, slot number not found")
return null
}
if (target_node && typeof target_node === "number") {
target_node = graph.getNodeById(target_node)
}
if (!target_node) throw "target node is null"
//avoid loopback
if (target_node == this) return null
//you can specify the slot by name
if (typeof target_slot === "string") {
targetIndex = target_node.findInputSlot(target_slot)
if (targetIndex == -1) {
if (LiteGraph.debug) console.log("Connect: Error, no slot of name " + targetIndex)
return null
}
} else if (target_slot === LiteGraph.EVENT) {
// TODO: Events
if (LiteGraph.do_add_triggers_slots) {
target_node.changeMode(LGraphEventMode.ON_TRIGGER)
targetIndex = target_node.findInputSlot("onTrigger")
} else {
return null
}
} else if (typeof target_slot === "number") {
targetIndex = target_slot
} else {
targetIndex = 0
}
// Allow target node to change slot
if (target_node.onBeforeConnectInput) {
// This way node can choose another slot (or make a new one?)
const requestedIndex: false | number | null = target_node.onBeforeConnectInput(targetIndex, target_slot)
targetIndex = typeof requestedIndex === "number" ? requestedIndex : null
}
if (targetIndex === null || !target_node.inputs || targetIndex >= target_node.inputs.length) {
if (LiteGraph.debug) console.log("Connect: Error, slot number not found")
return null
}
let changed = false
const input = target_node.inputs[targetIndex]
let link_info: LLink = null
const output = this.outputs[slot]
if (!this.outputs[slot]) return null
//check targetSlot and check connection types
if (!LiteGraph.isValidConnection(output.type, input.type)) {
this.setDirtyCanvas(false, true)
// @ts-expect-error Unused param
if (changed) graph.connectionChange(this, link_info)
return null
}
// Allow nodes to block connection
if (target_node.onConnectInput?.(targetIndex, output.type, output, this, slot) === false)
return null
if (this.onConnectOutput?.(slot, input.type, input, target_node, targetIndex) === false)
return null
//if there is something already plugged there, disconnect
if (target_node.inputs[targetIndex]?.link != null) {
graph.beforeChange()
target_node.disconnectInput(targetIndex)
changed = true
}
if (output.links?.length) {
if (output.type === LiteGraph.EVENT && !LiteGraph.allow_multi_output_for_events) {
graph.beforeChange()
// @ts-expect-error Unused param
this.disconnectOutput(slot, false, { doProcessChange: false })
changed = true
}
}
const nextId = LiteGraph.use_uuids
? LiteGraph.uuidv4()
: ++graph.last_link_id
//create link class
link_info = new LLink(
nextId,
input.type || output.type,
this.id,
slot,
target_node.id,
targetIndex
)
//add to graph links list
graph._links.set(link_info.id, link_info)
//connect in output
output.links ??= []
output.links.push(link_info.id)
//connect in input
target_node.inputs[targetIndex].link = link_info.id
graph._version++
//link_info has been created now, so its updated
this.onConnectionsChange?.(
NodeSlotType.OUTPUT,
slot,
true,
link_info,
output
)
target_node.onConnectionsChange?.(
NodeSlotType.INPUT,
targetIndex,
true,
link_info,
input
)
graph.onNodeConnectionChange?.(
NodeSlotType.INPUT,
target_node,
targetIndex,
this,
slot
)
graph.onNodeConnectionChange?.(
NodeSlotType.OUTPUT,
this,
slot,
target_node,
targetIndex
)
this.setDirtyCanvas(false, true)
graph.afterChange()
graph.connectionChange(this)
return link_info
}
/**
* disconnect one output to an specific node
* @param {number_or_string} slot (could be the number of the slot or the string with the name of the slot)
* @param {LGraphNode} target_node the target node to which this slot is connected [Optional, if not target_node is specified all nodes will be disconnected]
* @return {boolean} if it was disconnected successfully
*/
disconnectOutput(slot: string | number, target_node?: LGraphNode): boolean {
if (typeof slot === "string") {
slot = this.findOutputSlot(slot)
if (slot == -1) {
if (LiteGraph.debug) console.log("Connect: Error, no slot of name " + slot)
return false
}
} else if (!this.outputs || slot >= this.outputs.length) {
if (LiteGraph.debug) console.log("Connect: Error, slot number not found")
return false
}
//get output slot
const output = this.outputs[slot]
if (!output || !output.links || output.links.length == 0)
return false
//one of the output links in this slot
const graph = this.graph
if (target_node) {
if (typeof target_node === "number")
target_node = graph.getNodeById(target_node)
if (!target_node)
throw "Target Node not found"
for (let i = 0, l = output.links.length; i < l; i++) {
const link_id = output.links[i]
const link_info = graph._links.get(link_id)
//is the link we are searching for...
if (link_info.target_id == target_node.id) {
output.links.splice(i, 1) //remove here
const input = target_node.inputs[link_info.target_slot]
input.link = null //remove there
//remove the link from the links pool
graph._links.delete(link_id)
graph._version++
//link_info hasn't been modified so its ok
target_node.onConnectionsChange?.(
NodeSlotType.INPUT,
link_info.target_slot,
false,
link_info,
input
)
this.onConnectionsChange?.(
NodeSlotType.OUTPUT,
slot,
false,
link_info,
output
)
graph.onNodeConnectionChange?.(NodeSlotType.OUTPUT, this, slot)
graph.onNodeConnectionChange?.(NodeSlotType.INPUT, target_node, link_info.target_slot)
break
}
}
} //all the links in this output slot
else {
for (let i = 0, l = output.links.length; i < l; i++) {
const link_id = output.links[i]
const link_info = graph._links.get(link_id)
//bug: it happens sometimes
if (!link_info) continue
target_node = graph.getNodeById(link_info.target_id)
graph._version++
if (target_node) {
const input = target_node.inputs[link_info.target_slot]
//remove other side link
input.link = null
//link_info hasn't been modified so its ok
target_node.onConnectionsChange?.(
NodeSlotType.INPUT,
link_info.target_slot,
false,
link_info,
input
)
}
//remove the link from the links pool
graph._links.delete(link_id)
this.onConnectionsChange?.(
NodeSlotType.OUTPUT,
slot,
false,
link_info,
output
)
graph.onNodeConnectionChange?.(NodeSlotType.OUTPUT, this, slot)
graph.onNodeConnectionChange?.(NodeSlotType.INPUT, target_node, link_info.target_slot)
}
output.links = null
}
this.setDirtyCanvas(false, true)
graph.connectionChange(this)
return true
}
/**
* Disconnect one input
* @param slot Input slot index, or the name of the slot
* @return true if disconnected successfully or already disconnected, otherwise false
*/
disconnectInput(slot: number | string): boolean {
// Allow search by string
if (typeof slot === "string") {
slot = this.findInputSlot(slot)
if (slot == -1) {
if (LiteGraph.debug) console.log("Connect: Error, no slot of name " + slot)
return false
}
} else if (!this.inputs || slot >= this.inputs.length) {
if (LiteGraph.debug) {
console.log("Connect: Error, slot number not found")
}
return false
}
const input = this.inputs[slot]
if (!input) return false
const link_id = this.inputs[slot].link
if (link_id != null) {
this.inputs[slot].link = null
//remove other side
const link_info = this.graph._links.get(link_id)
if (link_info) {
const target_node = this.graph.getNodeById(link_info.origin_id)
if (!target_node) return false
const output = target_node.outputs[link_info.origin_slot]
if (!(output?.links?.length > 0)) return false
//search in the inputs list for this link
let i = 0
for (const l = output.links.length; i < l; i++) {
if (output.links[i] == link_id) {
output.links.splice(i, 1)
break
}
}
this.graph._links.delete(link_id)
if (this.graph) this.graph._version++
this.onConnectionsChange?.(
NodeSlotType.INPUT,
slot,
false,
link_info,
input
)
target_node.onConnectionsChange?.(
NodeSlotType.OUTPUT,
i,
false,
link_info,
output
)
this.graph?.onNodeConnectionChange?.(NodeSlotType.OUTPUT, target_node, i)
this.graph?.onNodeConnectionChange?.(NodeSlotType.INPUT, this, slot)
}
}
this.setDirtyCanvas(false, true)
this.graph?.connectionChange(this)
return true
}
/**
* returns the center of a connection point in canvas coords
* @param {boolean} is_input true if if a input slot, false if it is an output
* @param {number_or_string} slot (could be the number of the slot or the string with the name of the slot)
* @param {vec2} out [optional] a place to store the output, to free garbage
* @return {[x,y]} the position
**/
getConnectionPos(is_input: boolean, slot_number: number, out?: Point): Point {
out ||= new Float32Array(2)
const num_slots = is_input
? this.inputs?.length ?? 0
: this.outputs?.length ?? 0
const offset = LiteGraph.NODE_SLOT_HEIGHT * 0.5
if (this.flags.collapsed) {
const w = this._collapsed_width || LiteGraph.NODE_COLLAPSED_WIDTH
if (this.horizontal) {
out[0] = this.pos[0] + w * 0.5
out[1] = is_input
? this.pos[1] - LiteGraph.NODE_TITLE_HEIGHT
: this.pos[1]
} else {
out[0] = is_input
? this.pos[0]
: this.pos[0] + w
out[1] = this.pos[1] - LiteGraph.NODE_TITLE_HEIGHT * 0.5
}
return out
}
//weird feature that never got finished
if (is_input && slot_number == -1) {
out[0] = this.pos[0] + LiteGraph.NODE_TITLE_HEIGHT * 0.5
out[1] = this.pos[1] + LiteGraph.NODE_TITLE_HEIGHT * 0.5
return out
}
//hard-coded pos
if (is_input &&
num_slots > slot_number &&
this.inputs[slot_number].pos) {
out[0] = this.pos[0] + this.inputs[slot_number].pos[0]
out[1] = this.pos[1] + this.inputs[slot_number].pos[1]
return out
} else if (!is_input &&
num_slots > slot_number &&
this.outputs[slot_number].pos) {
out[0] = this.pos[0] + this.outputs[slot_number].pos[0]
out[1] = this.pos[1] + this.outputs[slot_number].pos[1]
return out
}
//horizontal distributed slots
if (this.horizontal) {
out[0] = this.pos[0] + (slot_number + 0.5) * (this.size[0] / num_slots)
out[1] = is_input
? this.pos[1] - LiteGraph.NODE_TITLE_HEIGHT
: this.pos[1] + this.size[1]
return out
}
//default vertical slots
out[0] = is_input
? this.pos[0] + offset
: this.pos[0] + this.size[0] + 1 - offset
out[1] =
this.pos[1] +
(slot_number + 0.7) * LiteGraph.NODE_SLOT_HEIGHT +
(this.constructor.slot_start_y || 0)
return out
}
/* Force align to grid */
alignToGrid(): void {
this.pos[0] = LiteGraph.CANVAS_GRID_SIZE * Math.round(this.pos[0] / LiteGraph.CANVAS_GRID_SIZE)
this.pos[1] = LiteGraph.CANVAS_GRID_SIZE * Math.round(this.pos[1] / LiteGraph.CANVAS_GRID_SIZE)
}
/* Console output */
trace(msg?: string): void {
this.console ||= []
this.console.push(msg)
if (this.console.length > LGraphNode.MAX_CONSOLE)
this.console.shift()
this.graph.onNodeTrace?.(this, msg)
}
/* Forces to redraw or the main canvas (LGraphNode) or the bg canvas (links) */
setDirtyCanvas(dirty_foreground: boolean, dirty_background?: boolean): void {
this.graph?.canvasAction(c => c.setDirty(dirty_foreground, dirty_background))
}
loadImage(url: string): HTMLImageElement {
interface AsyncImageElement extends HTMLImageElement { ready?: boolean }
const img: AsyncImageElement = new Image()
img.src = LiteGraph.node_images_path + url
img.ready = false
const that = this
img.onload = function (this: AsyncImageElement) {
this.ready = true
that.setDirtyCanvas(true)
}
return img
}
/* Allows to get onMouseMove and onMouseUp events even if the mouse is out of focus */
captureInput(v: boolean): void {
if (!this.graph || !this.graph.list_of_graphcanvas)
return
const list = this.graph.list_of_graphcanvas
for (let i = 0; i < list.length; ++i) {
const c = list[i]
//releasing somebody elses capture?!
if (!v && c.node_capturing_input != this)
continue
//change
c.node_capturing_input = v ? this : null
}
}
get collapsed() {
return !!this.flags.collapsed
}
get collapsible() {
return !this.pinned && (this.constructor.collapsable !== false)
}
/**
* Collapse the node to make it smaller on the canvas
**/
collapse(force?: boolean): void {
if (!this.collapsible && !force) return
this.graph._version++
this.flags.collapsed = !this.flags.collapsed
this.setDirtyCanvas(true, true)
}
/**
* Toggles advanced mode of the node, showing advanced widgets
*/
toggleAdvanced() {
if (!this.widgets?.some(w => w.advanced)) return
this.graph._version++
this.showAdvanced = !this.showAdvanced
const prefSize = this.computeSize()
if (this.size[0] < prefSize[0] || this.size[1] < prefSize[1]) {
this.setSize([Math.max(this.size[0], prefSize[0]), Math.max(this.size[1], prefSize[1])])
}
this.setDirtyCanvas(true, true)
}
get pinned() {
return !!this.flags.pinned
}
/**
* Prevents the node being accidentally moved or resized by mouse interaction.
**/
pin(v?: boolean): void {
this.graph._version++
this.flags.pinned = v === undefined
? !this.flags.pinned
: v
this.resizable = !this.pinned
// Delete the flag if unpinned, so that we don't get unnecessary
// flags.pinned = false in serialized object.
if (!this.pinned)
delete this.flags.pinned
}
localToScreen(x: number, y: number, dragAndScale: DragAndScale): Point {
return [
(x + this.pos[0]) * dragAndScale.scale + dragAndScale.offset[0],
(y + this.pos[1]) * dragAndScale.scale + dragAndScale.offset[1]
]
}
get width() {
return this.collapsed ? this._collapsed_width || LiteGraph.NODE_COLLAPSED_WIDTH : this.size[0]
}
get height() {
// @ts-expect-error Not impl.
return this.collapsed ? LiteGraph.NODE_COLLAPSED_HEIGHT : this.size[1]
}
drawBadges(ctx: CanvasRenderingContext2D, { gap = 2 } = {}): void {
const badgeInstances = this.badges.map(badge => badge instanceof LGraphBadge ? badge : badge())
const isLeftAligned = this.badgePosition === BadgePosition.TopLeft
let currentX = isLeftAligned ? 0 : this.width - badgeInstances.reduce((acc, badge) => acc + badge.getWidth(ctx) + gap, 0)
const y = -(LiteGraph.NODE_TITLE_HEIGHT + gap)
for (const badge of badgeInstances) {
badge.draw(ctx, currentX, y - badge.height)
currentX += badge.getWidth(ctx) + gap
}
}
/**
* Try auto-connect input to output without this node when possible
* (very basic, only takes into account first input-output)
*
* @returns true if connected, false otherwise
*/
connectInputToOutput(): boolean {
if (
this.inputs?.length &&
this.outputs &&
this.outputs.length &&
LiteGraph.isValidConnection(this.inputs[0].type, this.outputs[0].type) &&
this.inputs[0].link &&
this.outputs[0].links &&
this.outputs[0].links.length
) {
const input_link = this.graph._links.get(this.inputs[0].link)
const output_link = this.graph._links.get(this.outputs[0].links[0])
const input_node = this.getInputNode(0)
const output_node = this.getOutputNodes(0)[0]
if (input_node && output_node) {
input_node.connect(input_link.origin_slot, output_node, output_link.target_slot)
return true
}
}
return false
}
}
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