Interpretation of ‘Iron Residable Behavior’ framework principles in the Java class library
‘Iron Resizable Behavior’ Framework in the Java Class Library
Iron Resizable Behavior is a framework in the Java class library that is used to achieve the adjustable UI component.This article will introduce the principles of Iron Resizable Behavior and provide some Java code examples.
Iron Resizable Behavior is based on the Web Component specification. It uses the browser's ResizeobServer API to monitor changes in the size of the component.It can be applied to any Java framework that supports Web Component.
Before using Iron Resizable Behavior, you need to introduce related dependence first.For Java developers, dependency items can be added through Maven or Gradle.The following is an example of a Maven configuration file:
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>iron-resizable-behavior</artifactId>
<version>1.0.0</version>
</dependency>
Once the dependency item is added, you can use iron Resizable Behavior in the Java code.
First, a component that can be adjusted.Suppose we have a custom component named ResizableComponent, which can adjust the width and height.In order to enable this component to support Iron Resizable Behavior, @JSMODULE annotations need to be added and inherit the Resizable class.The following is an example:
import com.vaadin.flow.component.Component;
import com.vaadin.flow.component.Tag;
import com.vaadin.flow.component.dependency.JsModule;
import com.vaadin.flow.component.html.Div;
@Tag("resizable-component")
@JsModule("resizable-component.js")
public class ResizableComponent extends Div implements Resizable {
// The implementation of the component ...
}
Next, you need to create a JavaScript module to process the adjustable behavior.Create a file called Resizable-component.js, and add the following code:
script
import {html, css} from 'lit-element';
import '@vaadin/vaadin-lumo-styles/spacing.js';
class ResizableComponent extends ResizableMixin(LitElement) {
static styles = css`
:host {
display: block;
box-sizing: border-box;
}
`;
render() {
return html`
<slot></slot>
`;
}
}
customElements.define('resizable-component', ResizableComponent);
The above code defines a web component called ResizableComponent, and ResizableMixin is applied.Through the size changes of the listening component, some logic can be performed in the callback function.
Finally, use Resizablecomponent in the application Java code.For example:
import com.vaadin.flow.component.orderedlayout.VerticalLayout;
import com.vaadin.flow.router.Route;
@Route("")
public class MainView extends VerticalLayout {
public MainView() {
ResizableComponent resizableComponent = new ResizableComponent();
add(resizableComponent);
}
}
In the above code, the ResizableComponent is added to the VerticalLayout, which will appear in the UI interface of the application.
All in all, Iron Resizable Behavior is a framework in a Java class library that is used to achieve adjustable UI components.Based on the Web Component specification, it uses the browser's ResizeobServer API to achieve dynamic adjustment of component size.By adding related dependencies and use example code, developers can use Iron Resizable Behavior in their own Java applications to create adjustable UI components.
