FileInput component - Code Implementation

[batmaster]

Implement FileInput component following React Admin patterns.

Component Type: Form Input
Category: Input Components
Priority: HIGH

Requirements:

• File upload with drag and drop support
• Multiple file selection and validation
• File type and size restrictions
• Progress indicators and upload status
• Accessibility features (ARIA, keyboard navigation)
• Theme integration with consistent styling
• TypeScript interfaces for all props

React Admin Equivalent: component
Integration: Works with form validation, file upload services

Dependencies: Form validation system, theme system, file upload system

Acceptance Criteria:

• Component renders correctly as file input
• Drag and drop functionality working
• File validation implemented
• Progress indicators working
• Accessibility features implemented
• Theme integration working
• TypeScript compilation passes
• Component exported from package index

Related tasks:

• Testing: [To be created]
• Documentation: [To be created]