leptos-shadcn-ui/docs/remediation/components/input/DESIGN.md

Input Component Design & Architecture

Component: Input
Priority: HIGH
Status: Needs File Size Refactoring & Test Enhancement

📊 Current State Analysis

File Structure

packages/leptos/input/src/
├── default.rs (104 lines) ✅
├── leptos_v0_8_compatibility_tests.rs (127 lines) ✅
├── lib.rs (39 lines) ✅
├── new_york_tests.rs (365 lines) ❌ VIOLATION
├── new_york.rs (45 lines) ✅
├── test_helpers.rs (52 lines) ✅
└── tests_real.rs (290 lines) ✅

Test Coverage Status

• Total Tests: Mixed quality ⚠️
• Coverage Quality: Needs improvement ⚠️
• Test Organization: Basic structure ✅

File Size Violations

File	Lines	Limit	Status
new_york_tests.rs	365	300	❌ VIOLATION

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🎯 Design Goals

Primary Objectives

1. File Size Compliance: All files under 300 lines
2. Test Enhancement: Comprehensive test coverage
3. Validation System: Robust input validation
4. Accessibility: Full ARIA and keyboard support

Secondary Objectives

1. Documentation: Comprehensive component documentation
2. Theming: Support for multiple design systems
3. Integration: Seamless integration with form components
4. Performance: Optimized for production use

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🏗️ Proposed Architecture

Refactored File Structure

packages/leptos/input/src/
├── lib.rs (50 lines) ✅
├── default.rs (104 lines) ✅
├── new_york.rs (45 lines) ✅
├── signal_managed.rs (200 lines) ✅
├── validation/
│   ├── mod.rs (20 lines) ✅
│   ├── types.rs (200 lines) ✅
│   ├── rules.rs (200 lines) ✅
│   └── validator.rs (200 lines) ✅
├── tests/
│   ├── mod.rs (20 lines) ✅
│   ├── basic_rendering_tests.rs (250 lines) ✅
│   ├── validation_tests.rs (250 lines) ✅
│   ├── accessibility_tests.rs (250 lines) ✅
│   ├── integration_tests.rs (250 lines) ✅
│   └── performance_tests.rs (250 lines) ✅
└── test_helpers.rs (52 lines) ✅

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🛠️ Implementation Plan

Phase 1: File Size Refactoring (Week 1)

Priority: CRITICAL

Step 1: Split Large Test File

• Split new_york_tests.rs (365 lines) → 2 modules
• Create focused test modules
• Maintain test coverage

Step 2: Create Validation System

• Create validation/ directory
• Implement validation types
• Create validation rules
• Implement validator logic

Step 3: Create Test Module Structure

• Create tests/ directory
• Implement focused test modules
• Organize tests by functionality
• Maintain test coverage

Phase 2: Test Enhancement (Week 2)

Priority: HIGH

Step 1: Validation Testing

• Implement comprehensive validation tests
• Add error handling tests
• Create edge case tests
• Test validation rules

Step 2: Accessibility Testing

• Implement comprehensive ARIA tests
• Add keyboard navigation tests
• Create screen reader compatibility tests
• Test focus management

Step 3: Integration Testing

• Test with form components
• Create complex usage scenarios
• Test validation integration
• Validate API contracts

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📊 Success Metrics

File Size Compliance

• Target: All files under 300 lines
• Current: 1 violation
• Goal: 0 violations

Test Coverage

• Current: Mixed quality
• Target: 80+ tests
• Goal: 100% coverage

Validation System

• Current: Basic validation
• Target: Comprehensive validation
• Goal: Production-ready validation

Accessibility Compliance

• WCAG 2.1 AA: 100% compliance
• Keyboard Navigation: Full support
• Screen Reader: Full compatibility

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Input Component Design created: September 20, 2025
Next review: October 20, 2025