The best practice of the Polymer framework in the Java class library
The Polymer framework is a powerful tool for building a web application, which uses Web component technology.When using the Polymer framework in the Java library, there are some best practices to help developers make better use of this framework.This article will introduce some best practices to develop Java -class libraries using the Polymer framework, and provide relevant Java code examples.
The following is the best practice of some Polymer frameworks in the Java class library:
1. Use the element tag as the component interface:
In the Polymer framework, each component is defined as a custom element.In the Java library, you can use the element tag of the component as the public interface of the component.In this way, other developers can use this element tag to add components to their applications.
import com.vaadin.flow.component.Tag;
import com.vaadin.flow.component.Tag;
import com.vaadin.flow.component.dependency.JsModule;
@Tag("my-element")
@JsModule("./my-element.js")
public class MyElement extends PolymerTemplate<TemplateModel> {
// The logical code of the component
}
2. Use data binding and template engine:
The Polymer framework supports data binding and template engine, which allows developers to combine the appearance of data and components.In the Java class library, you can use Polymer's data binding and template engine function to create reusable components.
import com.vaadin.flow.component.html.Div;
import com.vaadin.flow.component.html.Span;
import com.vaadin.flow.component.template.Id;
import com.vaadin.flow.component.template.ModelTemplate;
import com.vaadin.flow.data.binder.PropertyId;
import com.vaadin.flow.data.binder.ReadOnlyHasValue;
@Tag("person-card")
@JsModule("./person-card.js")
public class PersonCard extends PolymerTemplate<PersonCardModel> {
@Id("name")
private Span name;
@Id("age")
private Span age;
public PersonCard() {
name.setText("{{item.name}}");
age.setText("{{item.age}}");
}
}
3. Use event and method call:
The Polymer framework allows to communicate between components and can be called with each other through methods.In the Java library, you can use the Polymer framework event and method call function to achieve interaction between components.
import com.vaadin.flow.component.Tag;
import com.vaadin.flow.component.event.DomEvent;
import com.vaadin.flow.component.html.Div;
@Tag("custom-element")
public class CustomElement extends Div {
public CustomElement() {
setText("Click me!");
}
@DomEvent("click")
public void handleClick() {
setText("Clicked!");
}
}
4. Use modularity and packaging:
The Polymer framework supports packaging components into an independent module so that it can be reused in other applications.In the Java class library, you can use the modular and packaging function to pack the Polymer component into a release of the Polymer component.
import com.vaadin.flow.server.PWA;
import com.vaadin.flow.theme.Theme;
@PWA(name = "PolymerLibrary", shortName = "PolymerLib")
@Theme(value = "polymer")
public class MainView extends PolymerTemplate<TemplateModel> {
// The main interface of the application
}
By following the above best practice, you can better use the Polymer framework in the Java class library.This will enable you to create a powerful and reused Polymer component, thereby improving the development efficiency of your application.
Please note that the code in the example of this article is only used to explain the purpose, and appropriate modification and adjustment may be required in actual use.
