How to Remove Tooltip From Nodes and Connectors in Angular Diagram?

This article explains how to remove tooltips from nodes and connectors in an Angular diagram. In our Graphical User Interface (GUI), a tooltip appears when you hover your mouse over an element. This message provides additional information to enhance your experience and understanding of the interface.

If you prefer not to see these tooltips, you can easily remove them by disabling the tooltip constraints for nodes or connectors respectively in Angular Diagram.

Below is a code example demonstrating how to disable the tooltip for nodes/connectors:

import { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { DiagramComponent, Diagram, NodeModel, ConnectorModel, LayoutModel, DiagramModule,
 HierarchicalTreeService, HierarchicalTree, 
NodeConstraints,
ConnectorConstraints} from '@syncfusion/ej2-angular-diagrams';

Diagram.Inject(HierarchicalTree);

@Component({
 imports: [ DiagramModule ],

 providers: [HierarchicalTreeService],
 standalone: true,
 selector: "app-container",
 template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" [nodes]="nodes" [connectors]="connectors"
 [getNodeDefaults]="getNodeDefaults" [getConnectorDefaults]="getConnectorDefaults" [layout]="layout"> </ejs-diagram>`,
 encapsulation: ViewEncapsulation.None
})
export class AppComponent {
 @ViewChild("diagram")
 public diagram?: DiagramComponent;
 public layout?: LayoutModel;

 //Initialize nodes for diagram
 public nodes: NodeModel[] = [
   {
     id: 'Steve-Ceo',
   },
   {
     id: 'Kevin-Manager',
   },
   {
     id: 'Peter-Manager',
   },
   {
     id: 'John-Manager',
   },
   {
     id: 'Mary-CSE',
   },
   {
     id: 'Jim-CSE',
   },
   {
     id: 'Martin-CSE',
   },
 ];

 //Initialize connectors for diagram
 public connectors: ConnectorModel[] = [
   {
     id: 'Steve-Ceo_Kevin-Manager',
     sourceID: 'Steve-Ceo',
     targetID: 'Kevin-Manager',
   },
   {
     id: 'Steve-Ceo_Peter-Manager',
     sourceID: 'Steve-Ceo',
     targetID: 'Peter-Manager',
   },
   {
     id: 'Peter-Manager_John-Manager',
     sourceID: 'Peter-Manager',
     targetID: 'John-Manager',
   },
   {
     id: 'Peter-Manager_Mary-CSE',
     sourceID: 'Peter-Manager',
     targetID: 'Mary-CSE',
   },
   {
     id: 'Kevin-Manager_Jim-CSE',
     sourceID: 'Kevin-Manager',
     targetID: 'Jim-CSE',
   },
   {
     id: 'Kevin-Manager_Martin-CSE',
     sourceID: 'Kevin-Manager',
     targetID: 'Martin-CSE',
   },
 ];

 //Sets the default properties for all the Nodes
 public getNodeDefaults(node: NodeModel): NodeModel {
   node.annotations = [{ content: node.id }];
    //define tooltip
    node.tooltip = {
     content : node.id
   }
  
   node.borderColor = 'white';
   node.width = 100;
   node.height = 40;
   node.backgroundColor = '#6BA5D7';
   node.borderWidth = 1;
   node.width = 100; node.height = 40;
   //disable the tooltip for node
   node.constraints = NodeConstraints.Default & ~NodeConstraints.Tooltip
   return node;
 }

 //Sets the default properties for all the connectors
 public getConnectorDefaults(connector: ConnectorModel): ConnectorModel {
   connector.tooltip = {
     content : connector.id
   }
   connector.type = 'Orthogonal';
   //disable the tooltip for connector
   connector.constraints=ConnectorConstraints.Default & ~ConnectorConstraints.Tooltip
   return connector;
 }
 ngOnInit(): void {
   //Uses layout to auto-arrange nodes on the Diagram page
   this.layout = {
     //Sets layout type
     type: 'HierarchicalTree'
   }
 }
} 

Refer to the working sample for additional details and implementation : Sample

Conclusion

We hope you enjoyed learning how to remove tooltips from nodes and connectors in Angular Diagram.

You can refer to our Angular Diagram feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Angular Diagram example to understand how to create and manipulate data.

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