Java Integration

Package: io.kanro.idea.plugin.protobuf.java Config: META-INF/io.kanro.idea.plugin.protobuf-java.xml Dependency: com.intellij.modules.java (optional)

Overview

Provides bidirectional navigation between .proto definitions and their generated Java code. When Java support is available in the IDE, gutter icons appear in both proto and Java files allowing one-click navigation.

Features

Line Markers

• Proto -> Java: Gutter icon on message/service/enum definitions linking to generated Java classes
• Java -> Proto: Gutter icon on generated Java classes linking back to the proto source

Find Usages

Java code that uses generated proto classes will appear in "Find Usages" results for the corresponding proto definition.

Index

The JavaIndexProvider indexes proto elements with their Java class names, computed from:

• java_package option (or proto package if unset)
• java_outer_classname option
• java_multiple_files option

Name Resolution

Names.kt implements the Java naming rules:

• Package: java_package option -> proto package
• Outer class: java_outer_classname option -> derived from filename
• Multiple files: when java_multiple_files = true, top-level messages get their own classes

Key Files

File	Purpose
Extension.kt	Extension point declarations
JavaIndexProvider.kt	Stub index contributions
JavaLineMarkerProvider.kt	Java-side gutter icons
ProtobufLineMarkerProvider.kt	Proto-side gutter icons
JavaFindUsageFactory.kt	Find usage integration
JavaNameIndex.kt	Name index
FileJavaOptionsProvider.kt	Java option stub data
Names.kt	Java naming rules