feat(editor): AI Floating Nodes (#8703)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>

cypress/e2e/5-ndv.cy.ts

@@ -1,7 +1,8 @@
 import { v4 as uuid } from 'uuid';
 import { getVisibleSelect } from '../utils';
-import { MANUAL_TRIGGER_NODE_DISPLAY_NAME } from '../constants';
+import { MANUAL_TRIGGER_NODE_DISPLAY_NAME, AI_LANGUAGE_MODEL_OPENAI_CHAT_MODEL_NODE_NAME } from '../constants';
 import { NDV, WorkflowPage } from '../pages';
+import { NodeCreator } from '../pages/features/node-creator';
 
 const workflowPage = new WorkflowPage();
 const ndv = new NDV();
@@ -386,14 +387,12 @@ describe('NDV', () => {
 		) {
 			return cy.get(`[data-node-placement=${position}]`);
 		}
-		beforeEach(() => {
+
+		it('should traverse floating nodes with mouse', () => {
 			cy.createFixtureWorkflow('Floating_Nodes.json', `Floating Nodes`);
 			workflowPage.getters.canvasNodes().first().dblclick();
 			getFloatingNodeByPosition('inputMain').should('not.exist');
 			getFloatingNodeByPosition('outputMain').should('exist');
-		});
-
-		it('should traverse floating nodes with mouse', () => {
 			// Traverse 4 connected node forwards
 			Array.from(Array(4).keys()).forEach((i) => {
 				getFloatingNodeByPosition('outputMain').click({ force: true });
@@ -411,19 +410,6 @@ describe('NDV', () => {
 
 			getFloatingNodeByPosition('outputMain').click({ force: true });
 			ndv.getters.nodeNameContainer().should('contain', 'Chain');
-			getFloatingNodeByPosition('inputSub').should('exist');
-			getFloatingNodeByPosition('inputSub').click({ force: true });
-			ndv.getters.nodeNameContainer().should('contain', 'Model');
-			getFloatingNodeByPosition('inputSub').should('not.exist');
-			getFloatingNodeByPosition('inputMain').should('not.exist');
-			getFloatingNodeByPosition('outputMain').should('not.exist');
-			getFloatingNodeByPosition('outputSub').should('exist');
-			ndv.actions.close();
-			workflowPage.getters.selectedNodes().should('have.length', 1);
-			workflowPage.getters.selectedNodes().first().should('contain', 'Model');
-			workflowPage.getters.selectedNodes().first().dblclick();
-			getFloatingNodeByPosition('outputSub').click({ force: true });
-			ndv.getters.nodeNameContainer().should('contain', 'Chain');
 
 			// Traverse 4 connected node backwards
 			Array.from(Array(4).keys()).forEach((i) => {
@@ -448,7 +434,11 @@ describe('NDV', () => {
 				.should('contain', MANUAL_TRIGGER_NODE_DISPLAY_NAME);
 		});
 
-		it('should traverse floating nodes with mouse', () => {
+		it('should traverse floating nodes with keyboard', () => {
+			cy.createFixtureWorkflow('Floating_Nodes.json', `Floating Nodes`);
+			workflowPage.getters.canvasNodes().first().dblclick();
+			getFloatingNodeByPosition('inputMain').should('not.exist');
+			getFloatingNodeByPosition('outputMain').should('exist');
 			// Traverse 4 connected node forwards
 			Array.from(Array(4).keys()).forEach((i) => {
 				cy.realPress(['ShiftLeft', 'Meta', 'AltLeft', 'ArrowRight']);
@@ -466,19 +456,6 @@ describe('NDV', () => {
 
 			cy.realPress(['ShiftLeft', 'Meta', 'AltLeft', 'ArrowRight']);
 			ndv.getters.nodeNameContainer().should('contain', 'Chain');
-			getFloatingNodeByPosition('inputSub').should('exist');
-			cy.realPress(['ShiftLeft', 'Meta', 'AltLeft', 'ArrowDown']);
-			ndv.getters.nodeNameContainer().should('contain', 'Model');
-			getFloatingNodeByPosition('inputSub').should('not.exist');
-			getFloatingNodeByPosition('inputMain').should('not.exist');
-			getFloatingNodeByPosition('outputMain').should('not.exist');
-			getFloatingNodeByPosition('outputSub').should('exist');
-			ndv.actions.close();
-			workflowPage.getters.selectedNodes().should('have.length', 1);
-			workflowPage.getters.selectedNodes().first().should('contain', 'Model');
-			workflowPage.getters.selectedNodes().first().dblclick();
-			cy.realPress(['ShiftLeft', 'Meta', 'AltLeft', 'ArrowUp']);
-			ndv.getters.nodeNameContainer().should('contain', 'Chain');
 
 			// Traverse 4 connected node backwards
 			Array.from(Array(4).keys()).forEach((i) => {
@@ -502,6 +479,47 @@ describe('NDV', () => {
 				.first()
 				.should('contain', MANUAL_TRIGGER_NODE_DISPLAY_NAME);
 		});
+
+		it('should connect floating sub-nodes', () => {
+			const nodeCreator = new NodeCreator();
+			const connectionGroups = [
+				{
+					title: 'Language Models',
+					id: 'ai_languageModel'
+				},
+				{
+					title: 'Tools',
+					id: 'ai_tool'
+				},
+			]
+
+			workflowPage.actions.addInitialNodeToCanvas('AI Agent', { keepNdvOpen: true });
+
+			connectionGroups.forEach((group) => {
+				cy.getByTestId(`add-subnode-${group.id}`).should('exist');
+				cy.getByTestId(`add-subnode-${group.id}`).click();
+
+				cy.getByTestId('nodes-list-header').contains(group.title).should('exist');
+				nodeCreator.getters.getNthCreatorItem(1).click();
+				getFloatingNodeByPosition('outputSub').should('exist');
+				getFloatingNodeByPosition('outputSub').click({ force: true });
+
+				if (group.id === 'ai_languageModel') {
+					cy.getByTestId(`add-subnode-${group.id}`).should('not.exist');
+				} else {
+					cy.getByTestId(`add-subnode-${group.id}`).should('exist');
+					// Expand the subgroup
+					cy.getByTestId('subnode-connection-group-ai_tool').click();
+					cy.getByTestId(`add-subnode-${group.id}`).click();
+					nodeCreator.getters.getNthCreatorItem(1).click();
+					getFloatingNodeByPosition('outputSub').click({ force: true });
+					cy.getByTestId('subnode-connection-group-ai_tool').findChildByTestId('floating-subnode').should('have.length', 2);
+				}
+			});
+
+			// Since language model has no credentials set, it should show an error
+			cy.get('[class*=hasIssues]').should('have.length', 1);
+		})
 	});
 
 	it('should show node name and version in settings', () => {

packages/editor-ui/src/components/NDVDraggablePanels.vue

@@ -3,7 +3,6 @@
 		<NDVFloatingNodes
 			v-if="activeNode"
 			:root-node="activeNode"
-			type="input"
 			@switchSelectedNode="onSwitchSelectedNode"
 		/>
 		<div v-if="!hideInputAndOutput" :class="$style.inputPanel" :style="inputPanelStyles">

packages/editor-ui/src/components/NDVFloatingNodes.vue

@@ -46,12 +46,10 @@ import type { INodeTypeDescription } from 'n8n-workflow';
 
 interface Props {
 	rootNode: INodeUi;
-	type: 'input' | 'sub-input' | 'sub-output' | 'output';
 }
 const enum FloatingNodePosition {
 	top = 'outputSub',
 	right = 'outputMain',
-	bottom = 'inputSub',
 	left = 'inputMain',
 }
 const props = defineProps<Props>();
@@ -77,7 +75,6 @@ function onKeyDown(e: KeyboardEvent) {
 		const mapper = {
 			ArrowUp: FloatingNodePosition.top,
 			ArrowRight: FloatingNodePosition.right,
-			ArrowDown: FloatingNodePosition.bottom,
 			ArrowLeft: FloatingNodePosition.left,
 		};
 		/* eslint-enable @typescript-eslint/naming-convention */
@@ -111,9 +108,6 @@ const connectedNodes = computed<
 			workflow.getChildNodes(rootName, 'ALL_NON_MAIN'),
 		),
 		[FloatingNodePosition.right]: getINodesFromNames(workflow.getChildNodes(rootName, 'main', 1)),
-		[FloatingNodePosition.bottom]: getINodesFromNames(
-			workflow.getParentNodes(rootName, 'ALL_NON_MAIN'),
-		),
 		[FloatingNodePosition.left]: getINodesFromNames(workflow.getParentNodes(rootName, 'main', 1)),
 	};
 });
@@ -121,13 +115,11 @@ const connectedNodes = computed<
 const connectionGroups = [
 	FloatingNodePosition.top,
 	FloatingNodePosition.right,
-	FloatingNodePosition.bottom,
 	FloatingNodePosition.left,
 ];
 const tooltipPositionMapper = {
 	[FloatingNodePosition.top]: 'bottom',
 	[FloatingNodePosition.right]: 'left',
-	[FloatingNodePosition.bottom]: 'top',
 	[FloatingNodePosition.left]: 'right',
 };
 

packages/editor-ui/src/components/NDVSubConnections.vue

@@ -0,0 +1,458 @@
+<template>
+	<div :class="$style.container">
+		<div
+			:class="$style.connections"
+			:style="`--possible-connections: ${possibleConnections.length}`"
+		>
+			<div
+				v-for="connection in possibleConnections"
+				:key="connection.type"
+				:data-test-id="`subnode-connection-group-${connection.type}`"
+			>
+				<div :class="$style.connectionType">
+					<span
+						:class="{
+							[$style.connectionLabel]: true,
+							[$style.hasIssues]: hasInputIssues(connection.type),
+						}"
+						v-text="`${connection.displayName}${connection.required ? ' *' : ''}`"
+					/>
+					<div
+						v-on-click-outside="() => expandConnectionGroup(connection.type, false)"
+						:class="{
+							[$style.connectedNodesWrapper]: true,
+							[$style.connectedNodesWrapperExpanded]: expandedGroups.includes(connection.type),
+						}"
+						:style="`--nodes-length: ${connectedNodes[connection.type].length}`"
+						@click="expandConnectionGroup(connection.type, true)"
+					>
+						<div
+							v-if="
+								connectedNodes[connection.type].length >= 1 ? connection.maxConnections !== 1 : true
+							"
+							:class="{
+								[$style.plusButton]: true,
+								[$style.hasIssues]: hasInputIssues(connection.type),
+							}"
+							@click="onPlusClick(connection.type)"
+						>
+							<n8n-tooltip
+								placement="top"
+								:teleported="true"
+								:offset="10"
+								:show-after="300"
+								:disabled="
+									shouldShowConnectionTooltip(connection.type) &&
+									connectedNodes[connection.type].length >= 1
+								"
+							>
+								<template #content>
+									Add {{ connection.displayName }}
+									<template v-if="hasInputIssues(connection.type)">
+										<TitledList
+											:title="`${$locale.baseText('node.issues')}:`"
+											:items="nodeInputIssues[connection.type]"
+										/>
+									</template>
+								</template>
+								<n8n-icon-button
+									size="medium"
+									icon="plus"
+									type="tertiary"
+									:data-test-id="`add-subnode-${connection.type}`"
+								/>
+							</n8n-tooltip>
+						</div>
+						<div
+							v-if="connectedNodes[connection.type].length > 0"
+							:class="{
+								[$style.connectedNodes]: true,
+								[$style.connectedNodesMultiple]: connectedNodes[connection.type].length > 1,
+							}"
+						>
+							<div
+								v-for="(node, index) in connectedNodes[connection.type]"
+								:key="node.node.name"
+								:class="{ [$style.nodeWrapper]: true, [$style.hasIssues]: node.issues }"
+								data-test-id="floating-subnode"
+								:data-node-name="node.node.name"
+								:style="`--node-index: ${index}`"
+							>
+								<n8n-tooltip
+									:key="node.node.name"
+									placement="top"
+									:teleported="true"
+									:offset="10"
+									:show-after="300"
+									:disabled="shouldShowConnectionTooltip(connection.type)"
+								>
+									<template #content>
+										{{ node.node.name }}
+										<template v-if="node.issues">
+											<TitledList
+												:title="`${$locale.baseText('node.issues')}:`"
+												:items="node.issues"
+											/>
+										</template>
+									</template>
+
+									<div
+										:class="$style.connectedNode"
+										@click="onNodeClick(node.node.name, connection.type)"
+									>
+										<NodeIcon
+											:node-type="node.nodeType"
+											:node-name="node.node.name"
+											tooltip-position="top"
+											:size="20"
+											circle
+										/>
+									</div>
+								</n8n-tooltip>
+							</div>
+						</div>
+					</div>
+				</div>
+			</div>
+		</div>
+	</div>
+</template>
+
+<script setup lang="ts">
+import type { INodeUi } from '@/Interface';
+import { useNodeTypesStore } from '@/stores/nodeTypes.store';
+import { useWorkflowsStore } from '@/stores/workflows.store';
+import { computed, ref, watch } from 'vue';
+import { NodeHelpers } from 'n8n-workflow';
+import { useNodeHelpers } from '@/composables/useNodeHelpers';
+import NodeIcon from '@/components/NodeIcon.vue';
+import TitledList from '@/components/TitledList.vue';
+import type { ConnectionTypes, INodeInputConfiguration, INodeTypeDescription } from 'n8n-workflow';
+import { useDebounce } from '@/composables/useDebounce';
+
+interface Props {
+	rootNode: INodeUi;
+}
+
+const props = defineProps<Props>();
+const workflowsStore = useWorkflowsStore();
+const nodeTypesStore = useNodeTypesStore();
+const nodeHelpers = useNodeHelpers();
+const { debounce } = useDebounce();
+const emit = defineEmits(['switchSelectedNode', 'openConnectionNodeCreator']);
+
+interface NodeConfig {
+	node: INodeUi;
+	nodeType: INodeTypeDescription;
+	issues: string[];
+}
+
+const possibleConnections = ref<INodeInputConfiguration[]>([]);
+
+const expandedGroups = ref<ConnectionTypes[]>([]);
+const shouldShowNodeInputIssues = ref(false);
+
+const nodeType = computed(() =>
+	nodeTypesStore.getNodeType(props.rootNode.type, props.rootNode.typeVersion),
+);
+
+const nodeData = computed(() => workflowsStore.getNodeByName(props.rootNode.name));
+
+const workflow = computed(() => workflowsStore.getCurrentWorkflow());
+
+const nodeInputIssues = computed(() => {
+	const issues = nodeHelpers.getNodeIssues(nodeType.value, props.rootNode, workflow.value, [
+		'typeUnknown',
+		'parameters',
+		'credentials',
+		'execution',
+	]);
+	return issues?.input ?? {};
+});
+
+const connectedNodes = computed<Record<ConnectionTypes, NodeConfig[]>>(() => {
+	return possibleConnections.value.reduce(
+		(acc, connection) => {
+			const nodes = getINodesFromNames(
+				workflow.value.getParentNodes(props.rootNode.name, connection.type),
+			);
+			return { ...acc, [connection.type]: nodes };
+		},
+		{} as Record<ConnectionTypes, NodeConfig[]>,
+	);
+});
+
+function getConnectionConfig(connectionType: ConnectionTypes) {
+	return possibleConnections.value.find((c) => c.type === connectionType);
+}
+
+function isMultiConnection(connectionType: ConnectionTypes) {
+	const connectionConfig = getConnectionConfig(connectionType);
+	return connectionConfig?.maxConnections !== 1;
+}
+
+function shouldShowConnectionTooltip(connectionType: ConnectionTypes) {
+	return isMultiConnection(connectionType) && !expandedGroups.value.includes(connectionType);
+}
+
+function expandConnectionGroup(connectionType: ConnectionTypes, isExpanded: boolean) {
+	// If the connection is a single connection, we don't need to expand the group
+	if (!isMultiConnection(connectionType)) {
+		return;
+	}
+
+	if (isExpanded) {
+		expandedGroups.value = [...expandedGroups.value, connectionType];
+	} else {
+		expandedGroups.value = expandedGroups.value.filter((g) => g !== connectionType);
+	}
+}
+
+function getINodesFromNames(names: string[]): NodeConfig[] {
+	return names
+		.map((name) => {
+			const node = workflowsStore.getNodeByName(name);
+			if (node) {
+				const matchedNodeType = nodeTypesStore.getNodeType(node.type);
+				if (matchedNodeType) {
+					const issues = nodeHelpers.getNodeIssues(matchedNodeType, node, workflow.value);
+					const stringifiedIssues = issues ? NodeHelpers.nodeIssuesToString(issues, node) : '';
+					return { node, nodeType: matchedNodeType, issues: stringifiedIssues };
+				}
+			}
+			return null;
+		})
+		.filter((n): n is NodeConfig => n !== null);
+}
+
+function hasInputIssues(connectionType: ConnectionTypes) {
+	return (
+		shouldShowNodeInputIssues.value && (nodeInputIssues.value[connectionType] ?? []).length > 0
+	);
+}
+
+function isNodeInputConfiguration(
+	connectionConfig: ConnectionTypes | INodeInputConfiguration,
+): connectionConfig is INodeInputConfiguration {
+	if (typeof connectionConfig === 'string') return false;
+
+	return 'type' in connectionConfig;
+}
+
+function getPossibleSubInputConnections(): INodeInputConfiguration[] {
+	if (!nodeType.value || !props.rootNode) return [];
+
+	const inputs = NodeHelpers.getNodeInputs(workflow.value, props.rootNode, nodeType.value);
+
+	const nonMainInputs = inputs.filter((input): input is INodeInputConfiguration => {
+		if (!isNodeInputConfiguration(input)) return false;
+
+		return input.type !== 'main';
+	});
+
+	return nonMainInputs;
+}
+
+function onNodeClick(nodeName: string, connectionType: ConnectionTypes) {
+	if (isMultiConnection(connectionType) && !expandedGroups.value.includes(connectionType)) {
+		expandConnectionGroup(connectionType, true);
+		return;
+	}
+
+	emit('switchSelectedNode', nodeName);
+}
+
+function onPlusClick(connectionType: ConnectionTypes) {
+	const connectionNodes = connectedNodes.value[connectionType];
+	if (
+		isMultiConnection(connectionType) &&
+		!expandedGroups.value.includes(connectionType) &&
+		connectionNodes.length >= 1
+	) {
+		expandConnectionGroup(connectionType, true);
+		return;
+	}
+
+	emit('openConnectionNodeCreator', props.rootNode.name, connectionType);
+}
+
+function showNodeInputsIssues() {
+	console.log('showNodeInputsIssues');
+	shouldShowNodeInputIssues.value = false;
+	// Reset animation
+	setTimeout(() => {
+		shouldShowNodeInputIssues.value = true;
+	}, 0);
+}
+
+watch(
+	nodeData,
+	debounce(
+		() =>
+			setTimeout(() => {
+				expandedGroups.value = [];
+				possibleConnections.value = getPossibleSubInputConnections();
+			}, 0),
+		{ debounceTime: 1000 },
+	),
+	{ immediate: true },
+);
+
+defineExpose({
+	showNodeInputsIssues,
+});
+</script>
+
+<style lang="scss" module>
+@keyframes horizontal-shake {
+	0% {
+		transform: translateX(0);
+	}
+	25% {
+		transform: translateX(5px);
+	}
+	50% {
+		transform: translateX(-5px);
+	}
+	75% {
+		transform: translateX(5px);
+	}
+	100% {
+		transform: translateX(0);
+	}
+}
+.container {
+	--node-size: 45px;
+	--plus-button-size: 30px;
+	--animation-duration: 150ms;
+	--collapsed-offset: 10px;
+	padding-top: calc(var(--node-size) + var(--spacing-3xs));
+}
+.connections {
+	// Make sure container has matching height if there's no connections
+	// since the plus button is absolutely positioned
+	min-height: calc(var(--node-size) + var(--spacing-m));
+	position: absolute;
+	bottom: calc((var(--node-size) / 2) * -1);
+	left: 0;
+	right: 0;
+	user-select: none;
+	justify-content: space-between;
+	display: grid;
+	grid-template-columns: repeat(var(--possible-connections), 1fr);
+}
+.connectionType {
+	display: flex;
+	flex-direction: column;
+	align-items: center;
+	transition: all calc((var(--animation-duration) - 50ms)) ease;
+}
+.connectionLabel {
+	margin-bottom: var(--spacing-2xs);
+	font-size: var(--font-size-2xs);
+	user-select: none;
+	text-wrap: nowrap;
+
+	&.hasIssues {
+		color: var(--color-danger);
+	}
+}
+.connectedNodesWrapper {
+	display: flex;
+	flex-direction: column;
+	align-items: center;
+	justify-content: space-between;
+	position: relative;
+}
+.plusButton {
+	transition: all var(--animation-duration) ease;
+	position: absolute;
+	top: var(--spacing-2xs);
+
+	&.hasIssues {
+		animation: horizontal-shake 500ms;
+		button {
+			--button-font-color: var(--color-danger);
+			--button-border-color: var(--color-danger);
+		}
+	}
+
+	&:not(:last-child) {
+		z-index: 1;
+		right: 100%;
+		margin-right: calc((var(--plus-button-size) * -1) * 0.9);
+		pointer-events: none;
+
+		.connectedNodesWrapperExpanded & {
+			// left: 100%;
+			margin-right: var(--spacing-2xs);
+			opacity: 1;
+			pointer-events: all;
+		}
+	}
+}
+
+.connectedNodesMultiple {
+	transition: all var(--animation-duration) ease;
+}
+.connectedNodesWrapperExpanded {
+	z-index: 1;
+}
+// Hide all other connection groups when one is expanded
+.connections:has(.connectedNodesWrapperExpanded)
+	.connectionType:not(:has(.connectedNodesWrapperExpanded)) {
+	opacity: 0;
+	pointer-events: none;
+	visibility: hidden;
+}
+.connectedNode {
+	border: var(--border-base);
+	background-color: var(--color-canvas-node-background);
+	border-radius: 100%;
+	padding: var(--spacing-xs);
+	cursor: pointer;
+	pointer-events: all;
+	transition: all var(--animation-duration) ease;
+	position: relative;
+	display: flex;
+	justify-self: center;
+	align-self: center;
+}
+.connectedNodes {
+	display: flex;
+	justify-content: center;
+	margin-right: calc(
+		(var(--nodes-length) - 1) * (-1 * (var(--node-size) - var(--collapsed-offset)))
+	);
+	.connectedNodesWrapperExpanded & {
+		margin-right: 0;
+		// Negative margin to offset the absolutely positioned plus button
+		// when the nodes are expanded to center the nodes
+		margin-right: calc((var(--spacing-2xs) + var(--plus-button-size)) * -1);
+	}
+}
+.nodeWrapper {
+	transition: all var(--animation-duration) ease;
+	transform-origin: center;
+	z-index: 1;
+	.connectedNodesWrapperExpanded &:not(:first-child) {
+		margin-left: var(--spacing-2xs);
+	}
+	&.hasIssues {
+		.connectedNode {
+			border-width: calc(var(--border-width-base) * 2);
+			border-color: var(--color-danger);
+		}
+	}
+
+	&:not(:first-child) {
+		transform: translateX(
+			calc(var(--node-index) * (-1 * (var(--node-size) - var(--collapsed-offset))))
+		);
+	}
+
+	.connectedNodesWrapperExpanded & {
+		transform: translateX(0);
+	}
+}
+</style>

packages/editor-ui/src/components/NodeDetailsView.vue

@@ -45,6 +45,7 @@
 				:has-double-width="activeNodeType?.parameterPane === 'wide'"
 				:node-type="activeNodeType"
 				@switchSelectedNode="onSwitchSelectedNode"
+				@openConnectionNodeCreator="onOpenConnectionNodeCreator"
 				@close="close"
 				@init="onPanelsInit"
 				@dragstart="onDragStart"
@@ -117,6 +118,8 @@
 						@stopExecution="onStopExecution"
 						@redrawRequired="redrawRequired = true"
 						@activate="onWorkflowActivate"
+						@switchSelectedNode="onSwitchSelectedNode"
+						@openConnectionNodeCreator="onOpenConnectionNodeCreator"
 					/>
 					<a
 						v-if="featureRequestUrl"
@@ -143,6 +146,7 @@ import type {
 	IRunData,
 	IRunExecutionData,
 	Workflow,
+	ConnectionTypes,
 } from 'n8n-workflow';
 import { jsonParse, NodeHelpers, NodeConnectionType } from 'n8n-workflow';
 import type { IExecutionResponse, INodeUi, IUpdateInformation, TargetItem } from '@/Interface';
@@ -664,9 +668,12 @@ export default defineComponent({
 		nodeTypeSelected(nodeTypeName: string) {
 			this.$emit('nodeTypeSelected', nodeTypeName);
 		},
-		async onSwitchSelectedNode(nodeTypeName: string) {
+		onSwitchSelectedNode(nodeTypeName: string) {
 			this.$emit('switchSelectedNode', nodeTypeName);
 		},
+		onOpenConnectionNodeCreator(nodeTypeName: string, connectionType: ConnectionTypes) {
+			this.$emit('openConnectionNodeCreator', nodeTypeName, connectionType);
+		},
 		async close() {
 			if (this.isDragging) {
 				return;
@@ -780,8 +787,9 @@ export default defineComponent({
 }
 
 .data-display-wrapper {
-	height: calc(100% - var(--spacing-2xl));
+	height: calc(100% - var(--spacing-l)) !important;
 	margin-top: var(--spacing-xl) !important;
+	margin-bottom: var(--spacing-xl) !important;
 	width: 100%;
 	background: none;
 	border: none;

packages/editor-ui/src/components/NodeSettings.vue

@@ -165,6 +165,13 @@
 				</div>
 			</div>
 		</div>
+		<NDVSubConnections
+			v-if="node"
+			ref="subConnections"
+			:root-node="node"
+			@switchSelectedNode="onSwitchSelectedNode"
+			@openConnectionNodeCreator="onOpenConnectionNodeCreator"
+		/>
 		<n8n-block-ui :show="blockUI" />
 	</div>
 </template>
@@ -178,6 +185,7 @@ import type {
 	INodeParameters,
 	INodeProperties,
 	NodeParameterValue,
+	ConnectionTypes,
 } from 'n8n-workflow';
 import { NodeHelpers, NodeConnectionType, deepCopy } from 'n8n-workflow';
 import type {
@@ -199,6 +207,7 @@ import ParameterInputList from '@/components/ParameterInputList.vue';
 import NodeCredentials from '@/components/NodeCredentials.vue';
 import NodeSettingsTabs from '@/components/NodeSettingsTabs.vue';
 import NodeWebhooks from '@/components/NodeWebhooks.vue';
+import NDVSubConnections from '@/components/NDVSubConnections.vue';
 import { get, set, unset } from 'lodash-es';
 
 import NodeExecuteButton from './NodeExecuteButton.vue';
@@ -223,6 +232,7 @@ export default defineComponent({
 		ParameterInputList,
 		NodeSettingsTabs,
 		NodeWebhooks,
+		NDVSubConnections,
 		NodeExecuteButton,
 	},
 	setup() {
@@ -467,6 +477,12 @@ export default defineComponent({
 		this.eventBus?.off('openSettings', this.openSettings);
 	},
 	methods: {
+		onSwitchSelectedNode(node: string) {
+			this.$emit('switchSelectedNode', node);
+		},
+		onOpenConnectionNodeCreator(node: string, connectionType: ConnectionTypes) {
+			this.$emit('openConnectionNodeCreator', node, connectionType);
+		},
 		populateHiddenIssuesSet() {
 			if (!this.node || !this.workflowsStore.isNodePristine(this.node.name)) return;
 
@@ -612,6 +628,7 @@ export default defineComponent({
 		},
 		onNodeExecute() {
 			this.hiddenIssuesInputs = [];
+			(this.$refs.subConnections as InstanceType<typeof NDVSubConnections>)?.showNodeInputsIssues();
 			this.$emit('execute');
 		},
 		setValue(name: string, value: NodeParameterValue) {

packages/editor-ui/src/views/NodeView.vue

@@ -94,6 +94,7 @@
 				:is-production-execution-preview="isProductionExecutionPreview"
 				@redrawNode="redrawNode"
 				@switchSelectedNode="onSwitchSelectedNode"
+				@openConnectionNodeCreator="onOpenConnectionNodeCreator"
 				@valueChanged="valueChanged"
 				@stopExecution="stopExecution"
 				@saveKeyboardShortcut="onSaveKeyboardShortcut"
@@ -900,38 +901,7 @@ export default defineComponent({
 
 		this.registerCustomAction({
 			key: 'openSelectiveNodeCreator',
-			action: async ({
+			action: this.openSelectiveNodeCreator,
-				connectiontype,
-				node,
-				creatorview,
-			}: {
-				connectiontype: NodeConnectionType;
-				node: string;
-				creatorview?: string;
-			}) => {
-				const nodeName = node ?? this.ndvStore.activeNodeName;
-				const nodeData = nodeName ? this.workflowsStore.getNodeByName(nodeName) : null;
-
-				this.ndvStore.activeNodeName = null;
-				await this.redrawNode(node);
-				// Wait for UI to update
-				setTimeout(() => {
-					if (creatorview) {
-						this.onToggleNodeCreator({
-							createNodeActive: true,
-							nodeCreatorView: creatorview,
-						});
-					} else if (connectiontype && nodeData) {
-						this.insertNodeAfterSelected({
-							index: 0,
-							endpointUuid: `${nodeData.id}-input${connectiontype}0`,
-							eventSource: NODE_CREATOR_OPEN_SOURCES.NOTICE_ERROR_MESSAGE,
-							outputType: connectiontype,
-							sourceId: nodeData.id,
-						});
-					}
-				}, 0);
-			},
 		});
 
 		this.readOnlyEnvRouteCheck();
@@ -1022,6 +992,38 @@ export default defineComponent({
 		sourceControlEventBus.off('pull', this.onSourceControlPull);
 	},
 	methods: {
+		async openSelectiveNodeCreator({
+			connectiontype,
+			node,
+			creatorview,
+		}: {
+			connectiontype: ConnectionTypes;
+			node: string;
+			creatorview?: string;
+		}) {
+			const nodeName = node ?? this.ndvStore.activeNodeName;
+			const nodeData = nodeName ? this.workflowsStore.getNodeByName(nodeName) : null;
+
+			this.ndvStore.activeNodeName = null;
+			await this.redrawNode(node);
+			// Wait for UI to update
+			setTimeout(() => {
+				if (creatorview) {
+					this.onToggleNodeCreator({
+						createNodeActive: true,
+						nodeCreatorView: creatorview,
+					});
+				} else if (connectiontype && nodeData) {
+					this.insertNodeAfterSelected({
+						index: 0,
+						endpointUuid: `${nodeData.id}-input${connectiontype}0`,
+						eventSource: NODE_CREATOR_OPEN_SOURCES.NOTICE_ERROR_MESSAGE,
+						outputType: connectiontype,
+						sourceId: nodeData.id,
+					});
+				}
+			});
+		},
 		editAllowedCheck(): boolean {
 			if (this.readOnlyNotification?.visible) {
 				return;
@@ -3966,6 +3968,12 @@ export default defineComponent({
 		async onSwitchSelectedNode(nodeName: string) {
 			this.nodeSelectedByName(nodeName, true, true);
 		},
+		async onOpenConnectionNodeCreator(node: string, connectionType: ConnectionTypes) {
+			await this.openSelectiveNodeCreator({
+				connectiontype: connectionType,
+				node,
+			});
+		},
 		async redrawNode(nodeName: string) {
 			// TODO: Improve later
 			// For now we redraw the node by simply renaming it. Can for sure be