GWT Knowledge

Collection of GWT knowledge and resources

GWT 3

Modules

Module Migration

• Common info about GWT module migration
• GWT Module migration guide
• GWT-Modules release checklist
• List of module migration state
• List of module migration progress

Resources

• Bill of Materials (BOM)

J2CL

J2CL Maven Plugin

Source code

https://github.com/Vertispan/j2clmavenplugin

Repo

https://repo.vertispan.com/j2cl/com/vertispan/j2cl/j2cl-maven-plugin/

Configuration

<plugin>
  <groupId>com.vertispan.j2cl</groupId>
    <artifactId>j2cl-maven-plugin</artifactId>
    <version>0.16-SNAPSHOT</version>
    <executions>
      <execution>
        <id>build-js</id>
        <phase>process-classes</phase>
          <goals>
            <goal>build</goal>
          </goals>
        </execution>
    </executions>
    <configuration>
      <entrypoint>com.example.my.EntryPoint</entrypoint>
    </configuration>
</plugin>

Entrypoint

MyEntryPoint.native.js

setTimeout(function(){
  // Call the java "constructor" method, `new` will only work if it is a @JsType, or maybe
  // once optimized. Without this, in BUNDLE mode, `new` doesn't include the clinit, so
  // static imports haven't been resolved yet.
  var ep = MyEntryPoint.$create__();
  // Invoke onModuleLoad to start the app.
  ep.m_onModuleLoad__()
}, 0);

Links

• RISE OF J2CL: JAVA WEB DEVELOPMENT AFTER GWT
• Java for web frontend developers, part 1 (Dmitrii Tikhomirov)
• Java for web frontend developers, part 2 (Dmitrii Tikhomirov)
• Reverse-engineering J2CL–Bazel integration
• Designing a Gradle plugin for J2CL
• Deploy GWT / J2CL Web Apps on Azure Static Web Apps Service

JsInterop

• JsInterop specification v1.0
• jsinterop-base (Utilities for GWT and J2CL to interact with JavaScript beyond JsInterop)
• JsInterop knowledge from VueGWT site
• Nice short introduction to JsInterop

Elemental2

• Elemental2 (Type checked access to browser APIs for Java code)
• File DnD Example (by Brandon Donnelson)
• Canvas and 2D Context use(by Brandon Donnelson)

Miscellaneous

• Reduce compile time (also relevant for non gxt projects)
• Curated list of GWT related news, links, blogs and libraries (by awesomegwt)
• Modern GWT, first steps (article by Ignacio Baca Moreno-Torres)
• Modern GWT, Introduction (slides from Dr. Lofi Dewanto)
• Modern GWT / J2CL Transpiler for Dummies (padlet from Dr. Lofi Dewanto)
• 5 Pillars of a Successful Java Web Application
• Using webworkers in GWT
• GWT emulation classes (source code)
• Dynamite Duo: GWT Boot and Spring Boot (article by Dr. Lofi Dewanto)