Tree Code Viewer

Interactive file tree viewer with multi-file code display and syntax highlighting for React applications. Perfect for documentation, code examples, and development tools with expandable folders and file icons.

Installation

npx uilayouts@latest add tree-code-viewer

With Line Numbers Disabled

<TreeCodeViewer 
  files={files} 
  showLineNumbers={false}
/>

With Default Expanded Folders

<TreeCodeViewer 
  files={files}
  defaultExpanded={['folder1', 'folder2']}
/>

Icon Support

The component automatically displays icons based on file extensions:

ExtensionIconColor
.tsx, .tsTypeScriptBlue
.jsx, .jsJavaScriptYellow
.cssCSSPurple
.jsonJSONGreen
.mdMarkdownOrange
.htmlHTMLRed
.vueVueGreen
.pyPythonBlue
.javaJavaOrange

Advanced Features

import { useState } from 'react';

function SearchableTreeViewer({ files }) {
  const [searchTerm, setSearchTerm] = useState('');
  
  const filteredFiles = files.filter(file =>
    file.fileName.toLowerCase().includes(searchTerm.toLowerCase()) ||
    file.virtualPath.some(path => 
      path.toLowerCase().includes(searchTerm.toLowerCase())
    )
  );
  
  return (
    <div>
      <input
        type="text"
        placeholder="Search files..."
        value={searchTerm}
        onChange={(e) => setSearchTerm(e.target.value)}
        className="w-full p-2 border rounded mb-4"
      />
      <TreeCodeViewer files={filteredFiles} />
    </div>
  );
}

Custom Icons

import { File, Folder } from 'lucide-react';

const customIcons = {
  'custom-file': <File className="text-purple-500" />,
  'custom-folder': <Folder className="text-orange-500" />
};

<TreeCodeViewer 
  files={files}
  icons={customIcons}
/>

function TreeWithBreadcrumbs({ files }) {
  const [currentPath, setCurrentPath] = useState([]);
  
  const handleFileSelect = (file) => {
    setCurrentPath(file.virtualPath);
  };
  
  return (
    <div>
      <nav className="flex items-center space-x-2 text-sm mb-4">
        {currentPath.map((path, index) => (
          <React.Fragment key={index}>
            <span className="text-gray-500">{path}</span>
            {index < currentPath.length - 1 && (
              <span className="text-gray-400">/</span>
            )}
          </React.Fragment>
        ))}
      </nav>
      <TreeCodeViewer 
        files={files}
        onFileSelect={handleFileSelect}
      />
    </div>
  );
}

Lazy Loading

import { useState, useEffect } from 'react';

function LazyTreeViewer({ initialFiles }) {
  const [files, setFiles] = useState(initialFiles.slice(0, 50));
  const [loading, setLoading] = useState(false);
  
  const loadMore = async () => {
    setLoading(true);
    // Simulate API call
    await new Promise(resolve => setTimeout(resolve, 500));
    setFiles(prev => [...prev, ...initialFiles.slice(prev.length, prev.length + 50)]);
    setLoading(false);
  };
  
  return (
    <div>
      <TreeCodeViewer files={files} />
      {files.length < initialFiles.length && (
        <button 
          onClick={loadMore}
          disabled={loading}
          className="mt-4 px-4 py-2 bg-blue-500 text-white rounded"
        >
          {loading ? 'Loading...' : 'Load More'}
        </button>
      )}
    </div>
  );
}

Accessibility

  • Keyboard navigation with arrow keys and Enter
  • Screen reader support with proper ARIA labels
  • High contrast mode compatibility
  • Focus management for tree navigation
  • Skip links for keyboard users

Customization

Custom Styling

/* Custom tree viewer styles */
.tree-viewer {
  --tree-bg: #1a1a1a;
  --tree-border: #333;
  --tree-text: #fff;
  --tree-hover: #2a2a2a;
}

.tree-viewer.light {
  --tree-bg: #fff;
  --tree-border: #e5e5e5;
  --tree-text: #000;
  --tree-hover: #f5f5f5;
}

Custom File

const customFileHandlers = {
  'image': (file) => (
    <img src={file.url} alt={file.fileName} className="max-w-full" />
  ),
  'video': (file) => (
    <video controls className="max-w-full">
      <source src={file.url} />
    </video>
  )
};

<TreeCodeViewer 
  files={files}
  fileHandlers={customFileHandlers}
/>
Code BlockCode Tabs MDX