Notable Changes in IntelliJ Platform and Plugins API 2022.*

Intentions and Quick Fix actions now display a preview for the code changes. Read this article to learn more about this feature.

Specify <language> in com.intellij.intentionAction EP registration to avoid instantiating language-specific intentions in non-relevant places.

Alternative extension point to implement Brace Matching in background thread.

Delegation of formatting can be controlled using dedicated extension point.

Implementations of AnAction need to override getActionUpdateThread() as detailed in Principal Implementation Overrides.

All rules for threading are now checked in tests as well.

See New UI Icons on how to provide additional icons.

Several plugins (Haml, Jakarta EE: WebSockets, JBoss Seam, Spring WebSocket, Stylus, Tapestry, Vaadin, ZKM-Unscramble) have been unbundled. The IDE will suggest installation if the project contains related framework dependency. If your plugin depends on them, users will need to install them from the JetBrains Marketplace.

Highlight references automatically via Additional Highlighting.

The New Project wizard has been refreshed and some base ModuleBuilder classes return false from the isAvailable() method. If your module builder extends a base class and is hidden in the 2022.1 wizard, override the method to return true.

Available as com.jetbrains.intellij.platform:external-system-test-framework from IntelliJ Platform Artifacts Repositories, see Testing.

Several plugins (Grails, Jakarta EE: Batch Applications, Jakarta EE: Server Faces (JSF), Jakarta EE: Web Services (JAX-WS), Jetty, Smali Support, Spring Batch, Spring Integration Patterns, Spring Web Services, WebLogic, WebSphere) have been unbundled. The IDE will suggest installation if the project contains related framework dependency. If your plugin depends on them, users will need to install them from the JetBrains Marketplace.

Available as com.jetbrains.intellij.maven:maven-test-framework from IntelliJ Platform Artifacts Repositories.