Detecting Component Mappings
How to detect whether a component is part of a template.
You can detect whether a component is part of a template by using the isTemplateMapped() method.
This is useful if you want to execute custom logic depending on whether the component was mapped in a template (injected via the @Id or annotation) or, for example, created directly using one of its constructors.
Example: Calling the isTemplateMapped() method in MyComponent.
@Tag("div")
public class MyComponent extends Div {
public MyComponent() {
if (!isTemplateMapped()) {
getElement().getStyle().set("color", "red");
}
}
}By default, the component only sets a style when the component isn’t part of a template.
See Binding Template Components for more about @Id mappings.
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