Show tooltips for each step on the canvas

packages/ui/src/components/Visualization/Custom/CustomNode.tsx

@@ -6,6 +6,7 @@ import {
   withSelection,
   WithSelectionProps,
 } from '@patternfly/react-topology';
+import { Tooltip } from '@patternfly/react-core';
 import { FunctionComponent } from 'react';
 import { AddStepMode } from '../../../models/visualization/base-visual-entity';
 import { CanvasDefaults } from '../Canvas/canvas.defaults';
@@ -24,6 +25,7 @@ const noopFn = () => {};
 const CustomNode: FunctionComponent<CustomNodeProps> = ({ element, ...rest }) => {
   const vizNode = element.getData()?.vizNode;
   const label = vizNode?.getNodeLabel();
+  const tooltipContent = vizNode?.getTooltipContent();
   const statusDecoratorTooltip = vizNode?.getNodeValidationText();
   const nodeStatus = !statusDecoratorTooltip ? NodeStatus.default : NodeStatus.warning;
 
@@ -45,13 +47,15 @@ const CustomNode: FunctionComponent<CustomNodeProps> = ({ element, ...rest }) =>
           width={CanvasDefaults.DEFAULT_NODE_DIAMETER}
           height={CanvasDefaults.DEFAULT_NODE_DIAMETER}
         >
-          <div className="custom-node__image">
-            <img
-              src={vizNode?.data.icon}
-              width={CanvasDefaults.DEFAULT_NODE_DIAMETER * 0.7}
-              height={CanvasDefaults.DEFAULT_NODE_DIAMETER * 0.7}
-            />
-          </div>
+          <Tooltip content={tooltipContent}>
+            <div className="custom-node__image">
+              <img
+                src={vizNode?.data.icon}
+                width={CanvasDefaults.DEFAULT_NODE_DIAMETER * 0.7}
+                height={CanvasDefaults.DEFAULT_NODE_DIAMETER * 0.7}
+              />
+            </div>
+          </Tooltip>
         </foreignObject>
       </g>
     </DefaultNode>

packages/ui/src/models/visualization/base-visual-entity.ts

@@ -20,6 +20,9 @@ export interface BaseVisualCamelEntity extends BaseCamelEntity {
   /** Given a path, get the component label */
   getNodeLabel: (path?: string) => string;
 
+  /** Given a path, get the component tooltip content */
+  getTooltipContent: (path?: string) => string;
+
   /** Given a path, get the component type and definition */
   getComponentSchema: (path?: string) => VisualComponentSchema | undefined;
 
@@ -71,6 +74,9 @@ export interface IVisualizationNode<T extends IVisualizationNodeData = IVisualiz
   /** This method returns the label to be used by the canvas nodes */
   getNodeLabel(): string;
 
+  /** This method returns the tooltip content to be used by the canvas nodes */
+  getTooltipContent(): string;
+
   addBaseEntityStep(definedComponent: DefinedComponent, mode: AddStepMode, targetProperty?: string): void;
 
   getNodeInteraction(): NodeInteraction;

packages/ui/src/models/visualization/flows/abstract-camel-visual-entity.ts

@@ -48,6 +48,17 @@ export abstract class AbstractCamelVisualEntity implements BaseVisualCamelEntity
     return label;
   }
 
+  getTooltipContent(path?: string): string {
+    if (!path) return '';
+    const componentModel = get(this.route, path);
+
+    const content = CamelComponentSchemaService.getTooltipContent(
+      CamelComponentSchemaService.getCamelComponentLookup(path, componentModel),
+    );
+
+    return content;
+  }
+
   getComponentSchema(path?: string): VisualComponentSchema | undefined {
     if (!path) return undefined;
 

packages/ui/src/models/visualization/flows/pipe-visual-entity.ts

@@ -51,6 +51,13 @@ export class PipeVisualEntity implements BaseVisualCamelEntity {
     return KameletSchemaService.getNodeLabel(stepModel, path);
   }
 
+  getTooltipContent(path?: string): string {
+    if (!path) return '';
+
+    const stepModel = get(this.spec, path) as PipeStep;
+    return KameletSchemaService.getTooltipContent(stepModel, path);
+  }
+
   getComponentSchema(path?: string): VisualComponentSchema | undefined {
     if (!path) return undefined;
     const stepModel = get(this.spec, path) as PipeStep;

packages/ui/src/models/visualization/flows/support/camel-component-schema.service.test.ts

@@ -280,6 +280,60 @@ describe('CamelComponentSchemaService', () => {
     );
   });
 
+  describe('getTooltipContent', () => {
+    it('should return the component schema description', () => {
+      const camelElementLookup = { processorName: 'from' as keyof ProcessorDefinition, componentName: 'timer' };
+      const actualContent = CamelComponentSchemaService.getTooltipContent(camelElementLookup);
+
+      expect(actualContent).toEqual('Generate messages in specified intervals using java.util.Timer.');
+    });
+
+    it('should return the component name', () => {
+      const camelElementLookup = { processorName: 'from' as keyof ProcessorDefinition, componentName: 'xyz' };
+      const actualContent = CamelComponentSchemaService.getTooltipContent(camelElementLookup);
+
+      expect(actualContent).toEqual('xyz');
+    });
+
+    it('should return the kamelet schema description', () => {
+      const camelElementLookup = {
+        processorName: 'to' as keyof ProcessorDefinition,
+        componentName: 'kamelet:avro-deserialize-action',
+      };
+      const actualContent = CamelComponentSchemaService.getTooltipContent(camelElementLookup);
+
+      expect(actualContent).toEqual('Deserialize payload to Avro');
+    });
+
+    it('should return the kamelet name', () => {
+      const camelElementLookup = {
+        processorName: 'to' as keyof ProcessorDefinition,
+        componentName: 'kamelet:xyz',
+      };
+      const actualContent = CamelComponentSchemaService.getTooltipContent(camelElementLookup);
+
+      expect(actualContent).toEqual('kamelet:xyz');
+    });
+
+    it('should return the processor schema description', () => {
+      const path = 'from.steps.0.aggregate';
+      const definition = { id: 'aggregate-2202' };
+      const camelElementLookup = CamelComponentSchemaService.getCamelComponentLookup(path, definition);
+      const actualContent = CamelComponentSchemaService.getTooltipContent(camelElementLookup);
+
+      expect(actualContent).toEqual('Aggregates many messages into a single message');
+    });
+
+    it('should return the processor name', () => {
+      const path = 'from.steps.0.xyz';
+      const definition = { id: 'xyz-2202' };
+      const camelElementLookup = CamelComponentSchemaService.getCamelComponentLookup(path, definition);
+      const actualContent = CamelComponentSchemaService.getTooltipContent(camelElementLookup);
+
+      expect(actualContent).toEqual('xyz');
+    });
+  });
+
   describe('canHavePreviousStep', () => {
     it.each([
       ['from', false],

packages/ui/src/models/visualization/flows/support/camel-component-schema.service.ts

@@ -6,6 +6,8 @@ import { CatalogKind } from '../../../catalog-kind';
 import { VisualComponentSchema } from '../../base-visual-entity';
 import { CamelCatalogService } from '../camel-catalog.service';
 import { CamelProcessorStepsProperties, ICamelElementLookupResult } from './camel-component-types';
+import { IKameletDefinition } from '../../../kamelets-catalog';
+import { ICamelComponentDefinition } from '../../../camel-components-catalog';
 
 export class CamelComponentSchemaService {
   static DISABLED_SIBLING_STEPS = ['from', 'when', 'otherwise', 'doCatch', 'doFinally'];
@@ -70,6 +72,32 @@ export class CamelComponentSchemaService {
     }
   }
 
+  static getTooltipContent(camelElementLookup: ICamelElementLookupResult): string {
+    if (camelElementLookup.componentName !== undefined) {
+      const catalogLookup = CamelCatalogService.getCatalogLookup(camelElementLookup.componentName);
+      if (catalogLookup.catalogKind === CatalogKind.Component) {
+        return (
+          (catalogLookup.definition as unknown as ICamelComponentDefinition)?.component.description ??
+          camelElementLookup.componentName
+        );
+      }
+
+      if (catalogLookup.catalogKind === CatalogKind.Kamelet) {
+        return (
+          (catalogLookup.definition as unknown as IKameletDefinition)?.spec.definition.description ??
+          camelElementLookup.componentName
+        );
+      }
+    }
+
+    const schema = this.getSchema(camelElementLookup);
+    if (schema.description !== undefined) {
+      return schema.description;
+    }
+
+    return camelElementLookup.processorName;
+  }
+
   static canHavePreviousStep(processorName: keyof ProcessorDefinition): boolean {
     return !this.DISABLED_SIBLING_STEPS.includes(processorName);
   }

packages/ui/src/models/visualization/flows/support/kamelet-schema.service.test.ts

@@ -110,4 +110,38 @@ describe('KameletSchemaService', () => {
       expect(result).toEqual('sink: Unknown');
     });
   });
+
+  describe('getTooltipContent', () => {
+    it('should return the Kamelet description as the tooltip content', () => {
+      const step = {
+        ref: {
+          kind: 'Kamelet',
+          apiVersion: 'camel.apache.org/v1',
+          name: 'beer-source',
+        },
+      };
+      const result = KameletSchemaService.getTooltipContent(step, 'source');
+
+      expect(result).toEqual('Produces periodic events about beers!');
+    });
+
+    it('should return the Kamelet name as the tooltip content', () => {
+      const step = {
+        ref: {
+          kind: 'Kamelet',
+          apiVersion: 'camel.apache.org/v1',
+          name: 'xyz-source',
+        },
+      };
+      const result = KameletSchemaService.getTooltipContent(step, 'source');
+
+      expect(result).toEqual('xyz-source');
+    });
+
+    it('should return the Kamelet path as the tooltip content', () => {
+      const result = KameletSchemaService.getTooltipContent(undefined, 'sink');
+
+      expect(result).toEqual('sink: Unknown');
+    });
+  });
 });

packages/ui/src/models/visualization/flows/support/kamelet-schema.service.ts

@@ -26,8 +26,16 @@ export class KameletSchemaService {
     return CamelCatalogService.getComponent(CatalogKind.Kamelet, stepName);
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   static getNodeLabel(step: PipeStep, path: string): string {
     return step?.ref?.name ?? `${path}: Unknown`;
   }
+
+  static getTooltipContent(step: PipeStep, path: string): string {
+    const schema = this.getKameletDefinition(step)?.propertiesSchema;
+    if (schema?.description !== undefined) {
+      return schema.description;
+    }
+
+    return step?.ref?.name ?? `${path}: Unknown`;
+  }
 }

packages/ui/src/models/visualization/visualization-node.test.ts

@@ -55,6 +55,28 @@ describe('VisualizationNode', () => {
     });
   });
 
+  describe('getTooltipContent', () => {
+    it('should return the tootltip content from the underlying BaseVisualCamelEntity', () => {
+      const getTooltipContentSpy = jest.fn().mockReturnValue('test-description');
+      const visualEntity = {
+        getTooltipContent: getTooltipContentSpy,
+      } as unknown as BaseVisualCamelEntity;
+
+      node = createVisualizationNode('test', { path: 'test-path', entity: visualEntity });
+      const content = node.getTooltipContent();
+
+      expect(getTooltipContentSpy).toHaveBeenCalledWith(node.data.path);
+      expect(content).toEqual('test-description');
+    });
+
+    it('should return the id when the underlying BaseVisualCamelEntity is not defined', () => {
+      node = createVisualizationNode('test', {});
+      const content = node.getTooltipContent();
+
+      expect(content).toEqual(node.id);
+    });
+  });
+
   it('should return the component schema from the root node', () => {
     /** Arrange */
     const getComponentSchemaSpy = jest.fn();

packages/ui/src/models/visualization/visualization-node.ts

@@ -49,6 +49,10 @@ class VisualizationNode<T extends IVisualizationNodeData = IVisualizationNodeDat
     return this.getRootNode().getBaseEntity()?.getNodeLabel(this.data.path) ?? this.id;
   }
 
+  getTooltipContent(): string {
+    return this.getRootNode().getBaseEntity()?.getTooltipContent(this.data.path) ?? this.id;
+  }
+
   addBaseEntityStep(definition: DefinedComponent, mode: AddStepMode): void {
     this.getRootNode().getBaseEntity()?.addStep({ definedComponent: definition, mode, data: this.data });
   }