Detecting whether your component is part of a PolymerTemplate
When creating your own component, you may want to execute custom logic depending on the component was mapped in a template (by being injected via @Id or @Uses)
or was created directly using one of its constructors.
To do that, you can call the isTemplateMapped method from your component. For example:
Source code
Java
@Tag("div")
public class MyComponent extends Div {
public MyComponent() {
if (!isTemplateMapped()) {
getElement().getStyle().set("color", "red");
}
}
}In this example, the component only sets a style by default when the component is not part of a template.
To know more about @Id mappings, check the Binding Components from a PolymerTemplate tutorial.