Added support for converting widgets to inputs (and back)

web/extensions/core/widgetInputs.js

+import { ComfyWidgets, addRandomizeWidget } from "/scripts/widgets.js";
+import { app } from "/scripts/app.js";
+
+const CONVERTED_TYPE = "converted-widget";
+const VALID_TYPES = ["STRING", "combo", "number"];
+
+function isConvertableWidget(widget, config) {
+	return VALID_TYPES.includes(widget.type) || VALID_TYPES.includes(config[0]);
+}
+
+function hideWidget(node, widget, suffix = "") {
+	widget.origType = widget.type;
+	widget.origComputeSize = widget.computeSize;
+	widget.origSerializeValue = widget.serializeValue;
+	widget.computeSize = () => [0, -4]; // -4 is due to the gap litegraph adds between widgets automatically
+	widget.type = CONVERTED_TYPE + suffix;
+	widget.serializeValue = () => {
+		// Prevent serializing the widget if we have no input linked
+		const { link } = node.inputs.find((i) => i.widget?.name === widget.name);
+		if (link == null) {
+			return undefined;
+		}
+		return widget.value;
+	};
+
+	// Hide any linked widgets, e.g. seed+randomize
+	if (widget.linkedWidgets) {
+		for (const w of widget.linkedWidgets) {
+			hideWidget(node, w, ":" + widget.name);
+		}
+	}
+}
+
+function showWidget(widget) {
+	widget.type = widget.origType;
+	widget.computeSize = widget.origComputeSize;
+	widget.serializeValue = widget.origSerializeValue;
+
+	delete widget.origType;
+	delete widget.origComputeSize;
+	delete widget.origSerializeValue;
+
+	// Hide any linked widgets, e.g. seed+randomize
+	if (widget.linkedWidgets) {
+		for (const w of widget.linkedWidgets) {
+			showWidget(w);
+		}
+	}
+}
+
+function convertToInput(node, widget, config) {
+	hideWidget(node, widget);
+
+	const { linkType } = getWidgetType(config);
+
+	// Add input and store widget config for creating on primitive node
+	node.addInput(widget.name, linkType, {
+		widget: { name: widget.name, config },
+	});
+}
+
+function convertToWidget(node, widget) {
+	showWidget(widget);
+	node.removeInput(node.inputs.findIndex((i) => i.widget?.name === widget.name));
+}
+
+function getWidgetType(config) {
+	// Special handling for COMBO so we restrict links based on the entries
+	let type = config[0];
+	let linkType = type;
+	if (type instanceof Array) {
+		type = "COMBO";
+		linkType = linkType.join(",");
+	}
+	return { type, linkType };
+}
+
+app.registerExtension({
+	name: "Comfy.WidgetInputs",
+	async beforeRegisterNodeDef(nodeType, nodeData, app) {
+		// Add menu options to conver to/from widgets
+		const origGetExtraMenuOptions = nodeType.prototype.getExtraMenuOptions;
+		nodeType.prototype.getExtraMenuOptions = function (_, options) {
+			const r = origGetExtraMenuOptions ? origGetExtraMenuOptions.apply(this, arguments) : undefined;
+
+			if (this.widgets) {
+				let toInput = [];
+				let toWidget = [];
+				for (const w of this.widgets) {
+					if (w.type === CONVERTED_TYPE) {
+						toWidget.push({
+							content: `Convert ${w.name} to widget`,
+							callback: () => convertToWidget(this, w),
+						});
+					} else {
+						const config = nodeData?.input?.required[w.name] || [w.type, w.options || {}];
+						if (isConvertableWidget(w, config)) {
+							toInput.push({
+								content: `Convert ${w.name} to input`,
+								callback: () => convertToInput(this, w, config),
+							});
+						}
+					}
+				}
+				if (toInput.length) {
+					options.push(...toInput, null);
+				}
+
+				if (toWidget.length) {
+					options.push(...toWidget, null);
+				}
+			}
+
+			return r;
+		};
+
+		// On initial configure of nodes hide all converted widgets
+		const origOnConfigure = nodeType.prototype.onConfigure;
+		nodeType.prototype.onConfigure = function () {
+			const r = origOnConfigure ? origOnConfigure.apply(this, arguments) : undefined;
+
+			if (this.inputs) {
+				for (const input of this.inputs) {
+					if (input.widget) {
+						const w = this.widgets.find((w) => w.name === input.widget.name);
+						hideWidget(this, w);
+					}
+				}
+			}
+
+			return r;
+		};
+
+		// Double click a widget input to automatically attach a primitive
+		const origOnInputDblClick = nodeType.prototype.onInputDblClick;
+		nodeType.prototype.onInputDblClick = function (slot) {
+			const r = origOnInputDblClick ? origOnInputDblClick.apply(this, arguments) : undefined;
+
+			if (this.inputs[slot].widget) {
+				const node = LiteGraph.createNode("PrimitiveNode");
+				app.graph.add(node);
+				node.pos = [this.pos[0] - node.size[0] - 30, this.pos[1]];
+				node.connect(0, this, slot);
+			}
+
+			return r;
+		};
+	},
+	registerCustomNodes() {
+		class PrimitiveNode {
+			constructor() {
+				this.addOutput("connect to widget input", "*");
+				this.serialize_widgets = true;
+				this.isVirtualNode = true;
+			}
+
+			applyToGraph() {
+				if (!this.outputs[0].links?.length) return;
+
+				// For each output link copy our value over the original widget value
+				for (const l of this.outputs[0].links) {
+					const linkInfo = app.graph.links[l];
+					const node = this.graph.getNodeById(linkInfo.target_id);
+					const input = node.inputs[linkInfo.target_slot];
+					const widgetName = input.widget.name;
+					if (widgetName) {
+						const widget = node.widgets.find((w) => w.name === widgetName);
+						if (widget) {
+							widget.value = this.widgets[0].value;
+							if (widget.callback) {
+								widget.callback(widget.value, app.canvas, node, app.canvas.graph_mouse, {});
+							}
+						}
+					}
+				}
+			}
+
+			onConnectionsChange(_, index, connected) {
+				if (connected) {
+					if (this.outputs[0].links?.length) {
+						if (!this.widgets?.length) {
+							this.#onFirstConnection();
+						}
+						if (!this.widgets?.length && this.outputs[0].widget) {
+							// On first load it often cant recreate the widget as the other node doesnt exist yet
+							// Manually recreate it from the output info
+							this.#createWidget(this.outputs[0].widget.config);
+						}
+					}
+				} else if (!this.outputs[0].links?.length) {
+					this.#onLastDisconnect();
+				}
+			}
+
+			onConnectOutput(slot, type, input, target_node, target_slot) {
+				// Fires before the link is made allowing us to reject it if it isn't valid
+
+				// No widget, we cant connect
+				if (!input.widget) return false;
+
+				if (this.outputs[slot].links?.length) {
+					return this.#isValidConnection(input);
+				}
+			}
+
+			#onFirstConnection() {
+				// First connection can fire before the graph is ready on initial load so random things can be missing
+				const linkId = this.outputs[0].links[0];
+				const link = this.graph.links[linkId];
+				if (!link) return;
+
+				const theirNode = this.graph.getNodeById(link.target_id);
+				if (!theirNode || !theirNode.inputs) return;
+
+				const input = theirNode.inputs[link.target_slot];
+				if (!input) return;
+
+				const widget = input.widget;
+				const { type, linkType } = getWidgetType(widget.config);
+
+				// Update our output to restrict to the widget type
+				this.outputs[0].type = linkType;
+				this.outputs[0].name = type;
+				this.outputs[0].widget = widget;
+
+				this.#createWidget(widget.config, theirNode, widget.name);
+			}
+
+			#createWidget(inputData, node, widgetName) {
+				let type = inputData[0];
+
+				if (type instanceof Array) {
+					type = "COMBO";
+				}
+
+				let widget;
+				if (type in ComfyWidgets) {
+					widget = (ComfyWidgets[type](this, "value", inputData, app) || {}).widget;
+				} else {
+					widget = this.addWidget(type, "value", null, () => {}, {});
+				}
+
+				if (node?.widgets && widget) {
+					const theirWidget = node.widgets.find((w) => w.name === widgetName);
+					if (theirWidget) {
+						widget.value = theirWidget.value;
+					}
+				}
+
+				if (widget.type === "number") {
+					addRandomizeWidget(this, widget, "Random after every gen");
+				}
+
+				// Grow our node if required
+				const sz = this.computeSize();
+				if (this.size[0] < sz[0]) {
+					this.size[0] = sz[0];
+				}
+				if (this.size[1] < sz[1]) {
+					this.size[1] = sz[1];
+				}
+
+				requestAnimationFrame(() => {
+					if (this.onResize) {
+						this.onResize(this.size);
+					}
+				});
+			}
+
+			#isValidConnection(input) {
+				// Only allow connections where the configs match
+				const config1 = this.outputs[0].widget.config;
+				const config2 = input.widget.config;
+
+				if (config1[0] !== config2[0]) return false;
+
+				for (const k in config1[1]) {
+					if (k !== "default") {
+						if (config1[1][k] !== config2[1][k]) {
+							return false;
+						}
+					}
+				}
+
+				return true;
+			}
+
+			#onLastDisconnect() {
+				// We cant remove + re-add the output here as if you drag a link over the same link
+				// it removes, then re-adds, causing it to break
+				this.outputs[0].type = "*";
+				this.outputs[0].name = "connect to widget input";
+				delete this.outputs[0].widget;
+
+				if (this.widgets) {
+					// Allow widgets to cleanup
+					for (const w of this.widgets) {
+						if (w.onRemove) {
+							w.onRemove();
+						}
+					}
+					this.widgets.length = 0;
+				}
+			}
+		}
+
+		LiteGraph.registerNodeType(
+			"PrimitiveNode",
+			Object.assign(PrimitiveNode, {
+				title: "Primitive",
+			})
+		);
+		PrimitiveNode.category = "utils";
+	},
+});

web/jsconfig.json

+{
+	"compilerOptions": {
+		"baseUrl": ".",
+		"paths": {
+			"/*": ["./*"]
+		}
+	},
+	"include": ["."]
+}

web/scripts/app.js

@@ -494,7 +494,7 @@ class ComfyApp {
 
 		// Create and mount the LiteGraph in the DOM
 		const canvasEl = (this.canvasEl = Object.assign(document.createElement("canvas"), { id: "graph-canvas" }));
-		canvasEl.tabIndex = "1"
+		canvasEl.tabIndex = "1";
 		document.body.prepend(canvasEl);
 
 		this.graph = new LGraph();
@@ -525,7 +525,10 @@ class ComfyApp {
 				this.loadGraphData(workflow);
 				restored = true;
 			}
-		} catch (err) {}
+		} catch (err) {
+			console.error("Error loading previous workflow", err);
+			debugger;
+		}
 
 		// We failed to restore a workflow so load the default
 		if (!restored) {
@@ -572,12 +575,8 @@ class ComfyApp {
 						const type = inputData[0];
 
 						if (Array.isArray(type)) {
-							// Enums e.g. latent rotation
-							let defaultValue = type[0];
-							if (inputData[1] && inputData[1].default) {
-								defaultValue = inputData[1].default;
-							}
-							this.addWidget("combo", inputName, defaultValue, () => {}, { values: type });
+							// Enums
+							Object.assign(config, widgets.COMBO(this, inputName, inputData, app) || {});
 						} else if (`${type}:${inputName}` in widgets) {
 							// Support custom widgets by Type:Name
 							Object.assign(config, widgets[`${type}:${inputName}`](this, inputName, inputData, app) || {});
@@ -667,11 +666,15 @@ class ComfyApp {
 	async graphToPrompt() {
 		const workflow = this.graph.serialize();
 		const output = {};
-		for (const n of workflow.nodes) {
-			const node = this.graph.getNodeById(n.id);
+		// Process nodes in order of execution
+		for (const node of this.graph.computeExecutionOrder(false)) {
+			const n = workflow.nodes.find((n) => n.id === node.id);
 
 			if (node.isVirtualNode) {
-				// Don't serialize frontend only nodes
+				// Don't serialize frontend only nodes but let them make changes
+				if (node.applyToGraph) {
+					node.applyToGraph(workflow);
+				}
 				continue;
 			}
 
@@ -695,7 +698,11 @@ class ComfyApp {
 					let link = node.getInputLink(i);
 					while (parent && parent.isVirtualNode) {
 						link = parent.getInputLink(link.origin_slot);
+						if (link) {
 							parent = parent.getInputNode(link.origin_slot);
+						} else {
+							parent = null;
+						}
 					}
 
 					if (link) {

web/scripts/widgets.js

@@ -10,9 +10,8 @@ function getNumberDefaults(inputData, defaultStep) {
 	return { val: defaultVal, config: { min, max, step: 10.0 * step } };
 }
 
-function seedWidget(node, inputName, inputData) {
-	const seed = ComfyWidgets.INT(node, inputName, inputData);
-	const randomize = node.addWidget("toggle", "Random seed after every gen", true, function (v) {}, {
+export function addRandomizeWidget(node, targetWidget, name, defaultValue = false) {
+	const randomize = node.addWidget("toggle", name, defaultValue, function (v) {}, {
 		on: "enabled",
 		off: "disabled",
 		serialize: false, // Don't include this in prompt.
@@ -20,14 +19,28 @@ function seedWidget(node, inputName, inputData) {
 
 	randomize.afterQueued = () => {
 		if (randomize.value) {
-			seed.widget.value = Math.floor(Math.random() * 1125899906842624);
+			const min = targetWidget.options?.min;
+			const max = targetWidget.options?.max;
+			if (min != null || max != null) {
+				targetWidget.value = Math.floor(Math.random() * ((max ?? 9999999999) - (min ?? 0) + 1) + (min ?? 0));
+			} else {
+				targetWidget.value = Math.floor(Math.random() * 1125899906842624);
+			}
 		}
 	};
+	return randomize;
+}
+
+function seedWidget(node, inputName, inputData) {
+	const seed = ComfyWidgets.INT(node, inputName, inputData);
+	const randomize = addRandomizeWidget(node, seed.widget, "Random seed after every gen", true);
 
+	seed.widget.linkedWidgets = [randomize];
 	return { widget: seed, randomize };
 }
 
 const MultilineSymbol = Symbol();
+const MultilineResizeSymbol = Symbol();
 
 function addMultilineWidget(node, name, opts, app) {
 	const MIN_SIZE = 50;
@@ -95,7 +108,7 @@ function addMultilineWidget(node, name, opts, app) {
 				// Calculate it here instead
 				computeSize(node.size);
 			}
-			const visible = app.canvas.ds.scale > 0.5;
+			const visible = app.canvas.ds.scale > 0.5 && this.type === "customtext";
 			const t = ctx.getTransform();
 			const margin = 10;
 			Object.assign(this.inputEl.style, {
@@ -149,9 +162,22 @@ function addMultilineWidget(node, name, opts, app) {
 		}
 	};
 
-	if (!(MultilineSymbol in node)) {
-		node[MultilineSymbol] = true;
-		const onResize = node.onResize;
+	widget.onRemove = () => {
+		widget.inputEl?.remove();
+
+		// Restore original size handler if we are the last
+		if (!--node[MultilineSymbol]) {
+			node.onResize = node[MultilineResizeSymbol];
+			delete node[MultilineSymbol];
+			delete node[MultilineResizeSymbol];
+		}
+	};
+
+	if (node[MultilineSymbol]) {
+		node[MultilineSymbol]++;
+	} else {
+		node[MultilineSymbol] = 1;
+		const onResize = (node[MultilineResizeSymbol] = node.onResize);
 
 		node.onResize = function (size) {
 			computeSize(size);
@@ -199,6 +225,14 @@ export const ComfyWidgets = {
 			return { widget: node.addWidget("text", inputName, defaultVal, () => {}, {}) };
 		}
 	},
+	COMBO(node, inputName, inputData) {
+		const type = inputData[0];
+		let defaultValue = type[0];
+		if (inputData[1] && inputData[1].default) {
+			defaultValue = inputData[1].default;
+		}
+		return { widget: node.addWidget("combo", inputName, defaultValue, () => {}, { values: type }) };
+	},
 	IMAGEUPLOAD(node, inputName, inputData, app) {
 		const imageWidget = node.widgets.find((w) => w.name === "image");
 		let uploadWidget;