GWT Timer

A future-proof port of the com.google.gwt.user.client.Timer GWT module, with no dependency on gwt-user (besides the Java Runtime Emulation), to prepare for GWT 3 / J2Cl.

Migrating from com.google.gwt.user.client.Timer

1. Add the dependency to your build.

   For Maven:

   <dependency>
     <groupId>org.gwtproject.timer</groupId>
     <artifactId>gwt-timer</artifactId>
     <version>HEAD-SNAPSHOT</version>
   </dependency>

   For Gradle:

   implementation("org.gwtproject.timer:gwt-timer:HEAD-SNAPSHOT")

2. Update your GWT module to use

   <inherits name="org.gwtproject.timer.Timer" />

3. Change the imports in your Java source files:

   import org.gwtproject.timer.client.Timer;

Instructions

To build gwt-timer:

• run mvn clean verify

on the parent directory. This will build the artifact and run tests against the JVM, J2CL, and GWT2.

System Requirements

GWT Timer requires GWT 2.9.0 or newer!

Dependencies

GWT Timer does not depend on any other module.

Samples

A simplified, browser-safe timer class. This class serves the same purpose as java.util.Timer , but is simplified because of the single-threaded environment. To schedule a timer, simply create a subclass of it (overriding run) and call schedule or scheduleRepeating.

new Timer() {
    @Override
    public void run() {
        DomGlobal.console.info("this block run only once.");
    }
}.run();


new Timer() {
    @Override
    public void run() {
        DomGlobal.console.info("this block run once after 1 second");
    }
}.schedule(1000);


new Timer() {
    @Override
    public void run() {
        DomGlobal.console.info("this block runs every 1 second");
    }
}.scheduleRepeating(1000);