docs: add JetBrains plugin technical design document for issue #9982

2026-09-07 08:26:51 +00:00 · 2025-12-12 00:58:18 +00:00 · 2025-12-12 00:58:18 +00:00 · 29199a7e62
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+# JetBrains Plugin Support - Technical Design Document
+
+## Context
+
+This document addresses [Issue #9982](https://github.com/RooCodeInc/Roo-Code/issues/9982), which requests JetBrains IDE support for Roo Code.
+
+### User Requirements
+
+Based on community feedback, users are requesting:
+
+- Full Roo Code functionality in JetBrains IDEs
+- Primary focus on IntelliJ IDEA and WebStorm
+- Custom model integration capabilities (highest priority)
+- Leverage JetBrains' superior Java and Git tooling
+- Native JetBrains UI experience
+
+## Current Architecture Analysis
+
+### VS Code Extension Structure
+
+Roo Code is currently built as a VS Code extension with the following key components:
+
+1. **Core Extension** (`src/extension.ts`)
+
+    - VS Code API integration
+    - Extension lifecycle management
+    - Command registration and handling
+
+2. **Webview UI** (`webview-ui/`)
+
+    - React-based interface
+    - VSCode webview toolkit integration
+    - Communication via message passing
+
+3. **Core Services**
+
+    - Provider management (Anthropic, OpenAI, OpenRouter, etc.)
+    - Model configuration and selection
+    - Terminal integration
+    - File system operations
+    - Code indexing
+    - MCP (Model Context Protocol) server support
+
+4. **Cloud Integration** (`@roo-code/cloud`)
+
+    - Authentication and user management
+    - Remote control capabilities
+    - Profile synchronization
+
+5. **Type Definitions** (`@roo-code/types`)
+    - Shared TypeScript interfaces
+    - Provider settings schemas
+    - API contracts
+
+### VS Code-Specific Dependencies
+
+The following components are tightly coupled to VS Code APIs:
+
+- **Editor Integration**: TextEditor, TextDocument, Range, Selection APIs
+- **Webview System**: VS Code's webview API for UI rendering
+- **Terminal Integration**: Terminal creation and command execution
+- **File System**: VS Code's workspace and file system APIs
+- **Configuration**: VS Code's settings and state management
+- **Commands**: VS Code's command palette integration
+- **Diff Views**: Custom diff view provider
+- **Code Actions**: Quick fix and refactoring suggestions
+
+## Approaches to JetBrains Support
+
+### Option 1: Native JetBrains Plugin (Recommended)
+
+Build a separate native plugin using JetBrains Platform SDK.
+
+#### Architecture
+
+```
+roo-code-jetbrains/
+├── src/main/kotlin/          # Plugin code in Kotlin/Java
+│   ├── actions/              # IntelliJ Actions (commands)
+│   ├── services/             # Background services
+│   ├── ui/                   # Tool windows and dialogs
+│   ├── settings/             # Settings UI
+│   └── integration/          # IDE integration points
+├── src/main/resources/       # Resources and plugin.xml
+└── build.gradle.kts          # Gradle build configuration
+```
+
+#### Key Components to Implement
+
+1. **Tool Window**: Replace VS Code sidebar
+
+    - Use IntelliJ's ToolWindow API
+    - Implement UI with Swing or Kotlin UI DSL
+    - Or embed browser component for web-based UI
+
+2. **Editor Integration**
+
+    - Document modification API
+    - PSI (Program Structure Interface) for code analysis
+    - Editor actions and intentions
+
+3. **Terminal Integration**
+
+    - TerminalRunner API
+    - Command execution
+
+4. **File System Operations**
+
+    - VirtualFileSystem API
+    - Document manager
+
+5. **Settings Management**
+
+    - PersistentStateComponent
+    - Configurable interface for settings UI
+
+6. **Provider Management**
+    - Port provider configuration system
+    - API key management
+    - Model selection interface
+
+#### Shared Components
+
+Leverage existing code where possible:
+
+- **API Integration**: HTTP clients for LLM providers (can be shared)
+- **Type Definitions**: TypeScript types → Kotlin data classes
+- **Business Logic**: Core algorithms and workflows
+- **Model Configurations**: JSON schemas and definitions
+
+#### UI Strategy
+
+**Option A: Native Kotlin UI**
+
+- Pros: True native experience, better IDE integration
+- Cons: Requires complete UI rewrite, more maintenance
+
+**Option B: Hybrid (Embedded Browser)**
+
+- Pros: Can reuse React UI, faster development
+- Cons: Less native feel, performance overhead
+- Use JCEF (Java Chromium Embedded Framework)
+
+### Option 2: Language Server Protocol (LSP) Bridge
+
+Create a language server that both VS Code and JetBrains can connect to.
+
+#### Architecture
+
+```
+┌─────────────┐         ┌──────────────────┐         ┌─────────────┐
+│  VS Code    │◄───────►│  Roo Code LSP    │◄───────►│ JetBrains   │
+│  Extension  │  LSP    │     Server       │  LSP    │   Plugin    │
+└─────────────┘         └──────────────────┘         └─────────────┘
+                              │
+                              ▼
+                        ┌──────────────┐
+                        │ LLM Providers│
+                        └──────────────┘
+```
+
+#### Pros
+
+- Shared business logic
+- Single codebase for core functionality
+- Standard protocol
+
+#### Cons
+
+- LSP not designed for AI coding assistants
+- Limited UI capabilities
+- Custom protocol extensions needed
+- Still requires significant client-side code
+
+### Option 3: Minimal Adapter Plugin
+
+Create a lightweight JetBrains plugin that communicates with the VS Code extension.
+
+#### Architecture
+
+```
+┌─────────────┐         ┌──────────────────┐
+│ JetBrains   │         │     VS Code      │
+│   Plugin    │◄───────►│    Extension     │
+│ (Thin UI)   │  HTTP/  │  (Core Logic)    │
+└─────────────┘  WS     └──────────────────┘
+```
+
+#### Pros
+
+- Minimal JetBrains-specific code
+- Leverage existing VS Code extension
+
+#### Cons
+
+- Requires VS Code running in background
+- Poor user experience
+- Dependency complexity
+- Not truly native
+
+## Recommended Approach
+
+**Build a native JetBrains plugin** (Option 1) with a hybrid UI strategy.
+
+### Phase 1: Core Functionality (MVP)
+
+1. Tool window with chat interface
+2. Provider configuration (custom models priority)
+3. Basic file editing capabilities
+4. Terminal command execution
+5. Settings UI
+
+### Phase 2: Advanced Features
+
+1. Code indexing and search
+2. Multi-file operations
+3. Diff views
+4. Cloud integration
+5. MCP server support
+
+### Phase 3: Polish and Optimization
+
+1. Performance optimization
+2. JetBrains-specific features (PSI integration)
+3. Multiple IDE support (IntelliJ, WebStorm, PyCharm)
+4. Comprehensive testing
+
+## Technical Challenges
+
+### 1. UI Framework
+
+- **Challenge**: React webview UI won't work in JetBrains
+- **Solution**:
+    - Option A: Rewrite in Kotlin with Compose/Swing
+    - Option B: Use JCEF to embed web UI
+    - **Recommendation**: Start with JCEF for faster MVP, migrate to native later
+
+### 2. Editor Integration
+
+- **Challenge**: Different APIs for document manipulation
+- **Solution**: Create abstraction layer over editor operations
+- Map VS Code concepts to IntelliJ equivalents:
+    - TextDocument → Document
+    - TextEditor → Editor
+    - Range → TextRange
+    - Selection → Caret
+
+### 3. State Management
+
+- **Challenge**: VS Code's ExtensionContext vs IntelliJ's services
+- **Solution**: Use IntelliJ's service architecture and state components
+
+### 4. File System Operations
+
+- **Challenge**: Different file system APIs
+- **Solution**: Abstract file operations behind common interface
+
+### 5. Terminal Integration
+
+- **Challenge**: Different terminal APIs
+- **Solution**: Adapter pattern for terminal operations
+
+### 6. Configuration Sync
+
+- **Challenge**: Users may want settings across both IDEs
+- **Solution**: Leverage Roo Code Cloud for cross-IDE profile sync
+
+## Development Roadmap
+
+### Prerequisites
+
+- JetBrains Platform SDK knowledge
+- Kotlin/Java development
+- Gradle build system
+- IntelliJ plugin development experience
+
+### Estimated Timeline
+
+**Phase 1 (MVP): 3-4 months**
+
+- Plugin structure and basic UI: 4 weeks
+- Provider integration and model config: 3 weeks
+- File editing capabilities: 3 weeks
+- Terminal integration: 2 weeks
+- Testing and bug fixes: 2 weeks
+
+**Phase 2 (Feature Parity): 3-4 months**
+
+- Advanced file operations: 4 weeks
+- Code indexing: 4 weeks
+- Cloud integration: 3 weeks
+- MCP support: 3 weeks
+- Testing and refinement: 2 weeks
+
+**Phase 3 (Polish): 2-3 months**
+
+- Performance optimization: 4 weeks
+- Multi-IDE support: 4 weeks
+- Documentation: 2 weeks
+- Beta testing: 2 weeks
+
+**Total: 8-11 months for full feature parity**
+
+## Resource Requirements
+
+### Team Composition
+
+- 1-2 JetBrains plugin developers (Kotlin/Java)
+- 1 UI developer (if building native UI)
+- 1 backend developer (shared logic)
+- 1 QA engineer (testing across IDEs)
+- Product manager (feature prioritization)
+
+### Infrastructure
+
+- JetBrains marketplace account
+- CI/CD for plugin builds
+- Testing infrastructure (multiple IDE versions)
+- Documentation site updates
+
+## Risks and Mitigation
+
+### Risk 1: Maintenance Burden
+
+- **Risk**: Maintaining two separate codebases
+- **Mitigation**:
+    - Maximize code sharing through packages
+    - Shared API client libraries
+    - Common business logic in TypeScript (can be ported)
+    - Automated testing
+
+### Risk 2: Feature Divergence
+
+- **Risk**: Features available in one IDE but not the other
+- **Mitigation**:
+    - Clear feature roadmap
+    - Parity tracking
+    - Staged rollout across platforms
+
+### Risk 3: User Confusion
+
+- **Risk**: Different experiences across IDEs
+- **Mitigation**:
+    - Consistent UI/UX where possible
+    - Clear documentation
+    - IDE-specific guides
+
+### Risk 4: Development Complexity
+
+- **Risk**: Learning curve for JetBrains platform
+- **Mitigation**:
+    - Hire experienced JetBrains plugin developers
+    - Start with simpler features
+    - Leverage JetBrains documentation and community
+
+## Code Sharing Strategy
+
+### Shared Components
+
+1. **API Clients**
+
+    - HTTP clients for LLM providers
+    - Authentication logic
+    - Model definitions
+
+2. **Type Definitions**
+
+    - Convert TypeScript types to Kotlin data classes
+    - Shared JSON schemas
+
+3. **Business Logic**
+
+    - Prompt engineering
+    - Response parsing
+    - Error handling
+
+4. **Configuration**
+    - Provider settings schemas
+    - Model configurations
+
+### Implementation Approach
+
+```
+roo-code/
+├── packages/
+│   ├── core/              # Shared business logic (TypeScript)
+│   ├── types/             # Shared type definitions
+│   └── api-clients/       # Provider API clients
+├── vscode-extension/      # Current VS Code extension
+└── jetbrains-plugin/      # New JetBrains plugin
+    ├── src/main/kotlin/   # Kotlin implementation
+    └── src/main/resources/
+```
+
+## Alternative: Web-Based Solution
+
+### Roo Code Desktop App
+
+Instead of IDE plugins, create a standalone desktop application.
+
+#### Pros
+
+- Single codebase
+- Works with any IDE
+- Easier maintenance
+
+#### Cons
+
+- Not integrated into IDE
+- Separate window context
+- Less seamless workflow
+
+This could be a future option but doesn't address the core request for native IDE integration.
+
+## Recommendations
+
+1. **Validate Demand**: Survey users to gauge interest and prioritize features
+
+    - Create GitHub discussion
+    - Discord/Reddit polls
+    - Understand willingness to adopt
+
+2. **Start with Design Prototype**: Before full implementation
+
+    - UI mockups for JetBrains plugin
+    - User flow diagrams
+    - Technical proof of concept
+
+3. **Phased Approach**: Don't aim for feature parity immediately
+
+    - Start with core features users care about most (custom models)
+    - Iterate based on feedback
+    - Add advanced features incrementally
+
+4. **Consider Strategic Partnership**
+
+    - Engage with JetBrains
+    - Potentially official partnership
+    - Marketplace promotion
+
+5. **Open Source Collaboration**
+    - Community contributions
+    - Plugin architecture allows experimentation
+    - Early adopter testing
+
+## Success Criteria
+
+### MVP Success (Phase 1)
+
+- [ ] Plugin installable from JetBrains Marketplace
+- [ ] Custom model configuration working
+- [ ] Basic chat interface functional
+- [ ] File editing capabilities
+- [ ] 100+ active users within first month
+
+### Feature Parity Success (Phase 2)
+
+- [ ] 80%+ feature parity with VS Code extension
+- [ ] Cloud sync working across IDEs
+- [ ] 1000+ active users
+- [ ] <5% crash rate
+
+### Long-term Success (Phase 3)
+
+- [ ] All major features available
+- [ ] Support for IntelliJ, WebStorm, PyCharm
+- [ ] 10,000+ active users
+- [ ] 4+ star rating on JetBrains Marketplace
+- [ ] Sustainable maintenance model
+
+## Next Steps
+
+1. **Community Feedback** (Week 1-2)
+
+    - Share this document with issue reporter
+    - Gather additional requirements
+    - Validate assumptions
+
+2. **Technical Spike** (Week 3-4)
+
+    - Create minimal JetBrains plugin prototype
+    - Test JCEF embedding
+    - Validate architecture decisions
+
+3. **Go/No-Go Decision** (Week 5)
+
+    - Review prototype results
+    - Assess resource availability
+    - Decide on timeline
+
+4. **Kickoff** (Week 6+)
+    - Assemble team
+    - Set up project structure
+    - Begin Phase 1 development
+
+## Conclusion
+
+Building JetBrains plugin support for Roo Code is technically feasible but requires significant investment. The recommended approach is a native plugin with a hybrid UI strategy, developed in phases over 8-11 months.
+
+Key considerations:
+
+- **User Demand**: Validate that sufficient users want this
+- **Resource Commitment**: Requires dedicated team
+- **Maintenance**: Ongoing cost of supporting multiple platforms
+- **Strategic Value**: Expands market, especially for Java developers
+
+The custom model integration feature, which is the highest priority for the requesting user, can be delivered in Phase 1 (MVP), providing value quickly.
+
+**Recommendation**: Proceed with community validation and technical spike before committing to full development.
+
+---
+
+**Document Status**: Draft for Community Review  
+**Related Issue**: [#9982](https://github.com/RooCodeInc/Roo-Code/issues/9982)  
+**Author**: Roomote  
+**Date**: 2025-12-12  
+**Version**: 1.0