The working principle analysis of the Angular Animate framework in the Java class library
The Angular Animate framework is part of AngularJS, which provides the ability to create animation effects in the application.Although AngularJS is a JavaScript -based framework, it is feasible to use Angular Animate in the Java library.This article will analyze the working principle of the Angular Animate framework in the Java class library and provide the necessary Java code examples.
The following steps are required to use the Angular Animate framework in the Java library:
1. Introduce dependencies: Create a Maven or Gradle project and add the relevant dependencies of Angular Animate and AngularJS to the construction document of the project.For example, in Maven, you can add the following dependencies to the pom.xml file:
<dependencies>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>angularjs</artifactId>
<version>{angularjs-version}</version>
</dependency>
<dependency>
<groupId>org.webjars.npm</groupId>
<artifactId>angular-animate</artifactId>
<version>{angular-animate-version}</version>
</dependency>
</dependencies>
Make sure `Angularjs-Version} and {Angular-Animate-Version}` 确 to the actual version number.
2. Create AngularJS module: Use Java to create an AngularJS module containing Angular Animate.You can use the following code to create a module:
import org.springframework.stereotype.Component;
import org.webjars.angularjs.Angular;
import org.webjars.angularjs.animate.Animate;
@Component
public class AngularAnimateModule {
private final Angular angular;
public AngularAnimateModule(Angular angular) {
this.angular = angular;
init();
}
private void init() {
angular.module("myApp", Animate.NAME);
}
}
In the above examples, the AngularJS module is created using the `Angular` and` Animate` classes.`@Component` Annotations are used to register this class as Spring components.
3. Use animation effects in HTML templates: Create a HTML template and use the instructions and CSS classes provided by Angular Animate to define the animation effect.For example, you can use the `ng-show` instructions and` .ng-entry`, `.ng-level` class to define the entry and leave animation effect of elements:
html
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css">
</head>
<body>
<div ng-controller="myController as ctrl">
<button ng-click="ctrl.toggle()">Toggle</button>
<div ng-show="ctrl.isVisible" class="animate__animated" ng-class="{'animate__fadeIn': ctrl.isVisible, 'animate__fadeOut': !ctrl.isVisible}">
This element will be animated.
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.8.2/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-animate/1.8.2/angular-animate.min.js"></script>
</body>
</html>
In the above examples, the CSS class from the `Animate.css` library is used to define the animation effect, and use the` ng-class` instruction to dynamically bind the CSS class.
4. Create a controller: Create a Java class and define the controller logic in it.The controller can control the visibility of the element in the animation.For example:
import org.springframework.stereotype.Controller;
@Controller
public class MyController {
private boolean isVisible;
public void toggle() {
isVisible = !isVisible;
}
public boolean isVisible() {
return isVisible;
}
}
In the above example, the `Toggle` method switch the visibility of the element when the button is clicked.
Through the above steps, we can use the Angular Animate framework in the Java library to create an animation effect.Please note that the example of the AngularJS 1.x is used in the example. If you use Angular 10+, you need to make a corresponding change.
It is hoped that this article will help understand the working principle of the Angular Animate framework in the Java class library and provide you with enough Java code examples.
