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Enhanced Text Editor Component

Overview

A feature-rich text editor component specifically designed for OCR text cleanup with advanced editing capabilities.

Features

🔄 Undo/Redo System

  • Automatic history tracking - Saves changes every 500ms
  • Keyboard shortcuts:
    • Ctrl+Z - Undo
    • Ctrl+Y or Ctrl+Shift+Z - Redo
  • Visual feedback - Buttons disabled when at history limits
  • Unlimited history - All changes tracked during session

🔍 Find & Replace

  • Find text - Search with live match counting
  • Replace one - Replace current match
  • Replace all - Replace all matches at once
  • Match navigation - Jump between matches
  • Keyboard shortcuts:
    • Ctrl+F - Open find panel
    • Ctrl+H - Open find & replace panel
    • Enter in find field - Find next
    • Enter in replace field - Replace current

🔤 Text Formatting

  • Font size control - Zoom in/out (10px - 24px)
  • Word wrap toggle - Switch between wrapped and horizontal scroll
  • Tab support - Insert 4 spaces with Tab key
  • Monospace font - Better readability for OCR text
  • Spell check - Built-in browser spell checking

📊 Statistics

  • Real-time counters:
    • Line count
    • Word count
    • Character count
  • Always visible - Displayed in toolbar

📋 Quick Actions

  • Copy - Copy selected text or entire content
  • Keyboard shortcuts - Full keyboard navigation support

💡 OCR Helpers

  • Common error tips - Built-in hints for typical OCR mistakes:
    • "rn" → "m"
    • "0" (zero) → "O" (letter)
    • "1" (one) → "l" (L)
    • Missing spaces
    • Special characters

Component API

Props

<TextEditor
  value={string}              // Current text content
  onChange={function}         // Change handler (e) => void
  placeholder={string}        // Placeholder text (optional)
/>

Example Usage

import TextEditor from '../components/TextEditor'

function MyComponent() {
  const [text, setText] = useState('')

  return (
    <TextEditor
      value={text}
      onChange={(e) => setText(e.target.value)}
      placeholder="Enter your text here..."
    />
  )
}

Keyboard Shortcuts

Shortcut Action
Ctrl+Z Undo last change
Ctrl+Y Redo last undone change
Ctrl+Shift+Z Redo (alternative)
Ctrl+F Open find panel
Ctrl+H Open find & replace panel
Tab Insert 4 spaces
Enter (in find) Find next match
Enter (in replace) Replace current match

UI Components

Toolbar

  • Undo/Redo buttons - With disabled states
  • Copy button - Copy selected or all text
  • Find/Replace toggle - Opens search panel
  • Zoom controls - Increase/decrease font size
  • Word wrap toggle - Active state indicator
  • Statistics display - Lines, words, characters

Find & Replace Panel

  • Find input - With match counter
  • Replace input - For replacement text
  • Next button - Navigate to next match
  • Replace button - Replace current match
  • Replace All button - Replace all matches
  • Slide-down animation - Smooth appearance

Text Area

  • Monospace font - JetBrains Mono or Courier New
  • Custom scrollbar - Styled for dark theme
  • Syntax highlighting - Selection highlighting
  • Auto-resize - Fills available space

OCR Tips Section

  • Visual hints - Common OCR error patterns
  • Quick reference - Always visible at bottom
  • Styled badges - Easy-to-scan format

Styling

CSS Variables Used

  • --color-surface - Editor background
  • --color-bg-secondary - Toolbar background
  • --color-border - Border colors
  • --color-primary - Primary actions
  • --color-accent - Success states
  • --color-text-* - Text hierarchy
  • --font-mono - Monospace font
  • --space-* - Spacing scale
  • --radius-* - Border radius scale
  • --transition-* - Animation timing

Responsive Design

  • Desktop - Full toolbar with all features
  • Tablet - Wrapped toolbar, maintained functionality
  • Mobile - Stacked layout, touch-friendly buttons

Performance

Optimizations

  • Debounced history - Saves every 500ms to prevent excessive updates
  • Efficient search - Uses native regex for find/replace
  • Minimal re-renders - Only updates when necessary
  • Lazy calculations - Stats computed only on change

Memory Management

  • History limit - Consider implementing max history size for very long sessions
  • Text area - Native browser element for best performance

Accessibility

Features

  • Keyboard navigation - Full keyboard support
  • Focus indicators - Clear visual feedback
  • ARIA labels - Screen reader support (can be enhanced)
  • Semantic HTML - Proper element usage
  • Color contrast - WCAG AA compliant

Improvements Possible

  • Add ARIA labels to all buttons
  • Announce match counts to screen readers
  • Add keyboard shortcuts help dialog
  • Improve focus management in modals

Browser Compatibility

Supported

  • ✅ Chrome/Edge (latest)
  • ✅ Firefox (latest)
  • ✅ Safari (latest)
  • ✅ Opera (latest)

Features

  • Clipboard API - Modern browsers only
  • CSS Grid/Flexbox - All modern browsers
  • Custom scrollbars - WebKit browsers (Chrome, Safari, Edge)

Integration with Cleanup Page

Before

<textarea
  className="cleanup-textarea"
  value={cleanedText}
  onChange={(e) => setCleanedText(e.target.value)}
  placeholder="OCR extracted text will appear here..."
  spellCheck={true}
/>

After

<TextEditor
  value={cleanedText}
  onChange={(e) => setCleanedText(e.target.value)}
  placeholder="OCR extracted text will appear here..."
/>

Benefits

  • ✅ Better UX - Professional editing experience
  • ✅ More features - Find/replace, undo/redo, zoom
  • ✅ OCR-specific - Tailored for OCR cleanup workflow
  • ✅ Consistent - Matches app design system
  • ✅ Productive - Keyboard shortcuts for power users

Future Enhancements

Possible Features

  1. Syntax highlighting - Highlight potential OCR errors
  2. Auto-correction - Suggest common fixes
  3. Diff view - Compare original vs cleaned text
  4. Export options - Save as TXT, DOCX, etc.
  5. Themes - Light/dark mode toggle
  6. Custom shortcuts - User-configurable hotkeys
  7. Macro recording - Record and replay edits
  8. AI suggestions - ML-powered error detection
  9. Collaborative editing - Real-time multi-user
  10. Version history - Save multiple versions

Technical Improvements

  1. Virtual scrolling - For very large documents
  2. Web Workers - Offload search to background thread
  3. IndexedDB - Persist history across sessions
  4. Code splitting - Lazy load editor features
  5. Performance monitoring - Track and optimize

Troubleshooting

Common Issues

Q: Undo/Redo not working

  • Check if history is being updated
  • Verify keyboard shortcuts aren't blocked
  • Ensure component is receiving onChange events

Q: Find not highlighting matches

  • Check if regex is valid
  • Verify text area has focus
  • Ensure selection API is supported

Q: Slow performance with large text

  • Consider debouncing onChange handler
  • Implement virtual scrolling
  • Limit history size

Q: Styling issues

  • Verify CSS variables are defined
  • Check for conflicting styles
  • Ensure TextEditor.css is imported

Files

Component Files

  • src/components/TextEditor.jsx - Main component
  • src/components/TextEditor.css - Component styles

Integration

  • src/pages/Cleanup.jsx - Uses TextEditor
  • src/pages/Cleanup.css - Page styles

Summary

The enhanced TextEditor component provides a professional, feature-rich editing experience specifically designed for OCR text cleanup. With undo/redo, find/replace, zoom controls, and OCR-specific helpers, it significantly improves the user experience compared to a basic textarea.

Key Benefits:

  • 🚀 Productivity - Keyboard shortcuts and quick actions
  • 🎯 Purpose-built - Designed for OCR cleanup workflow
  • 💎 Professional - Polished UI matching app design
  • 📱 Responsive - Works on all screen sizes
  • ♿ Accessible - Keyboard navigation and semantic HTML