Flowchart App - Features & Capabilities Report

Template Version: 1.0.0 Generated: 2026-01-22 Package: @epicdm/flowstate-app-flowchart App ID: flowchart

Table of Contents

1. Overview
2. App Identity
3. Feature Categories
4. Capabilities
5. Data Models
6. User Workflows
7. Integration Points
8. Architecture Summary
9. Quality & Compliance

Overview

Purpose

The Flowchart App is a visual workflow designer for FlowState. It provides a node-based diagram editor built on React Flow (@xyflow/react), enabling users to create, edit, and visualize flowcharts, data models, system architectures, and process flows with real-time collaboration support.

Target Users

Value Proposition

• Visual Editing: Intuitive drag-and-drop node canvas
• Specialized Nodes: Purpose-built nodes for common diagramming needs
• Multi-Tab Support: Work on up to 10 flowcharts simultaneously
• Built-in Examples: Learn from pre-configured example diagrams
• Local-First: RxDB integration for offline-capable data persistence

App Identity

Entry Points

Feature Categories

Category 1: Flow Editor

Core node-based diagram editing

Feature: Flow Canvas

Description: Interactive canvas powered by React Flow with pan, zoom, node selection, and edge connection capabilities.

User Story: As a user, I want an interactive canvas so that I can visually design and arrange flowcharts.

Acceptance Criteria:

• [x] Pan and zoom controls
• [x] Node selection and movement
• [x] Edge creation via handle dragging
• [x] Minimap for navigation
• [x] Background grid for alignment
• [x] Fit view on load

Implementation:

Feature: Node Palette

Description: Side panel displaying available node types for adding to the canvas via click interaction.

User Story: As a user, I want a node palette so that I can quickly add different types of nodes to my flowchart.

Acceptance Criteria:

• [x] Display all available node types
• [x] Visual icons for each type
• [x] Click to add node action
• [x] Color-coded by category

Implementation:

Category 2: Node Types

Specialized node components for different use cases

Feature: Database Schema Node

Description: Node type for visualizing database tables with field names, types, and nullable indicators.

User Story: As an architect, I want database schema nodes so that I can visualize data models.

Acceptance Criteria:

• [x] Display table name header
• [x] List fields with names and types
• [x] Show nullable indicator
• [x] Source and target handles for connections
• [x] Blue color theme

Implementation:

Data Structure:

interface DatabaseSchemaNodeData {
  tableName: string;
  fields: {
    name: string;
    type: string;
    nullable: boolean;
  }[];
}

Feature: Process Action Node

Description: Node type for process flow diagrams with support for process steps, decisions, start, and end points.

User Story: As a user, I want process nodes so that I can create workflow diagrams.

Acceptance Criteria:

• [x] Support multiple action types (process, decision, start, end)
• [x] Visual styling per action type
• [x] Custom shapes (rectangle, diamond, circle)
• [x] Color-coded backgrounds

Implementation:

Action Types:

Feature: LLM Agent Node

Description: Node type for modeling AI agent configurations with model, role, and temperature parameters.

User Story: As a developer, I want agent nodes so that I can visualize AI system architectures.

Acceptance Criteria:

• [x] Display agent name
• [x] Show role description
• [x] Display model name
• [x] Show temperature setting
• [x] Purple color theme

Implementation:

Data Structure:

interface LLMAgentNodeData {
  agentName: string;
  role: string;
  model: string;
  temperature: number;
}

Feature: Generic Custom Node

Description: Flexible node type with customizable key-value fields for arbitrary data display.

User Story: As a user, I want custom nodes so that I can model domain-specific concepts.

Acceptance Criteria:

• [x] Display custom title
• [x] Show key-value pairs
• [x] Support string, number, boolean values
• [x] Gray neutral theme

Implementation:

Category 3: Tab Management

Multi-document editing support

Feature: Flow Tabs

Description: Tab bar for managing multiple open flowcharts with up to 10 simultaneous documents.

User Story: As a user, I want tabs so that I can work on multiple flowcharts at once.

Acceptance Criteria:

• [x] Display open flow tabs
• [x] Active tab highlighting
• [x] Tab close buttons
• [x] Maximum 10 tabs limit
• [x] Auto-switch on close

Implementation:

Category 4: Toolbar Actions

File and flow management actions

Feature: Flow Toolbar

Description: Top toolbar with actions for creating, opening, saving, and closing flowcharts.

User Story: As a user, I want a toolbar so that I can manage my flowchart files.

Acceptance Criteria:

• [x] New flow button
• [x] Open flow button
• [x] Save button (disabled when no active flow)
• [x] Close button (disabled when no active flow)
• [x] Icon labels for clarity

Implementation:

Category 5: Example Flows

Pre-built example diagrams for learning

Feature: Example Flow Viewer

Description: Read-only viewer for exploring pre-configured example flowcharts demonstrating app capabilities.

User Story: As a new user, I want example flows so that I can learn how to use the app.

Acceptance Criteria:

• [x] Three example types available
• [x] Header with title and description
• [x] Legend showing connection types
• [x] Close button to return
• [x] Interactive panning and zooming

Implementation:

Available Examples:

Capabilities

Core Capabilities

Technical Capabilities

Integration Capabilities

Data Models

Collections Used

Entity Relationships

Flow
    |
    +-- Nodes (embedded array)
    |       |
    |       +-- Node data by type
    |
    +-- Edges (embedded array)
    |
    +-- Viewport (embedded object)

Type Definitions

type FlowNodeData =
  | DatabaseSchemaNodeData
  | ProcessActionNodeData
  | LLMAgentNodeData
  | GenericCustomNodeData;

interface FlowTab {
  flowId: string;
  flowName: string;
}

type FlowNode = Node<FlowNodeData>;
type FlowEdge = Edge;
type FlowViewport = Viewport;

User Workflows

Workflow 1: Create New Flowchart

Start a new diagram from scratch

Trigger: Click "New" button or "Create New Flow"

Steps:

Success Outcome: New flowchart ready for editing Failure Handling: Tab limit warning at 10 tabs

Workflow 2: Explore Examples

View pre-built example diagrams

Trigger: Click "View Example" button

Steps:

Success Outcome: Example diagram explored Failure Handling: N/A

Integration Points

Internal Integrations

External Integrations

Architecture Summary

Directory Structure

src/
├── components/          # UI components
│   ├── ExampleFlowViewer.tsx  # Example viewer
│   ├── FlowEditor.tsx         # Main editor
│   ├── FlowTabs.tsx           # Tab bar
│   ├── FlowToolbar.tsx        # Action toolbar
│   ├── NodePalette.tsx        # Node type palette
│   └── nodes/                 # Custom nodes
│       ├── DatabaseSchemaNode.tsx
│       ├── ProcessActionNode.tsx
│       ├── LLMAgentNode.tsx
│       ├── GenericCustomNode.tsx
│       └── index.ts
├── examples/            # Example flow definitions
│   ├── epicFlowstateHierarchy.ts
│   ├── mcpChatIntegration.ts
│   ├── productInitiativeFlow.ts
│   └── index.ts
├── hooks/               # Custom React hooks
│   ├── useFlowSync.ts   # Flow data sync
│   └── useFlowTabs.ts   # Tab management
├── styles/              # CSS styling
│   └── globals.css
├── FlowchartApp.tsx     # Main app component
├── index.ts             # Package exports
├── plugin.ts            # Plugin registration
├── standalone.tsx       # Standalone entry
└── types.ts             # TypeScript definitions

Key Architectural Patterns

Hooks Overview

Quality & Compliance

Test Coverage

Accessibility

Security Considerations

FlowState Alignment

Quality Gates

Appendix

Related Documentation

Version History