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FileBrowser

A modern, SwiftUI-based file browser component for macOS, iOS, and watchOS.

Swift Platforms License

Features

File Browsing

  • 🗂️ Browse directories and files with a clean, native interface
  • 📁 Navigate directory hierarchies
  • 🔍 View file metadata (size, dates, permissions, type)
  • 👁️ Preview files directly in-app
  • 🗑️ Delete files with proper error handling
  • 📤 Share files using native share sheet

File Viewing

  • 🖼️ Images: View all image formats (PNG, JPEG, GIF, TIFF, HEIC, WebP, AVIF, RAW, and more)
  • 🎬 Videos: Play all video formats (MP4, MOV, AVI, MKV, WebM, and more)
  • 📝 Text: Display text files, source code, logs
  • 📊 JSON/XML: Pretty-printed structured data
  • 🔢 Binary Data: Hex viewer with platform-aware display (16 bytes/row on Mac, 8 on iOS)
  • 🎵 Audio: Playback controls for audio files

User Experience

  • ⚡️ Async file loading - no UI freezing
  • 🎯 Platform-aware UI (adapts to Mac/iOS/watchOS)
  • 💾 User preferences persist (hex/decimal offsets, last viewed tab)
  • ♿️ WCAG 2.1 accessibility compliant (no auto-play)
  • 🎨 Clean, modern SwiftUI interface
  • 📱 Responsive on all screen sizes

Technical Features

  • ✅ Modern Swift patterns (async/await, structured concurrency)
  • ✅ Type-safe architecture (no type erasure)
  • ✅ No memory leaks
  • ✅ Proper error handling with user-friendly messages
  • ✅ Size limits prevent crashes (10 MB for hex viewer)
  • ✅ Future-proof file type detection (new formats work automatically)

Installation

Swift Package Manager

Add FileBrowser to your project via Xcode:

  1. File → Add Package Dependencies...
  2. Enter package URL: https://github.com/ios-tooling/FileBrowser
  3. Select version/branch
  4. Add to your target

Or add to your Package.swift:

dependencies: [
    .package(url: "https://github.com/ios-tooling/FileBrowser", from: "1.0.0")
]

Quick Start

Basic Usage

import SwiftUI
import FileBrowser

struct ContentView: View {
    var body: some View {
        FileBrowserScreen(rootURL: FileManager.default.homeDirectoryForCurrentUser)
    }
}

Custom Root Directory

let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
FileBrowserScreen(rootURL: documentsURL)

With Custom Title

FileBrowserScreen(
    root: FileBrowserDirectory(
        url: someURL,
        title: "My Files"
    )
)

Multiple Root Directories

FileBrowserScreen(roots: [
    FileBrowserDirectory(url: documentsURL, title: "Documents"),
    FileBrowserDirectory(url: downloadsURL, title: "Downloads"),
    FileBrowserDirectory(url: desktopURL, title: "Desktop")
])

Configuration Options

File Browser Options

FileBrowserScreen(rootURL: url)
    .fileBrowserOptions([
        .allowFileViewing,    // Enable "View" button
        .allowFileDeletion,   // Enable delete functionality
        .allowFileSharing     // Enable share button
    ])

Available options:

  • .allowFileViewing - Show "View" button for supported files
  • .allowFileDeletion - Allow deleting files
  • .allowFileSharing - Show share button

Custom File Formats

You can register custom file format handlers:

struct MyCustomFormat: FileBrowserFileFormat {
    static var fileExtension: String { "custom" }
    static var name: String { "Custom Format" }

    let url: URL

    init(url: URL) throws {
        self.url = url
        // Validate file format
    }

    var contentView: some View {
        Text("Custom view for \(url.lastPathComponent)")
    }
}

// Register the format
registerFileBrowserView(format: MyCustomFormat.self)

Supported File Types

FileBrowser automatically detects and handles:

Images

PNG, JPEG, GIF, TIFF, HEIC, WebP, AVIF, BMP, ICO, SVG, RAW formats (CR2, DNG, NEF, ARW, etc.)

Videos

MP4, MOV, QuickTime, AVI, MKV, WebM, FLV, WMV, MPEG, MPEG-2, MPEG-4

Audio

MP3, AAC, WAV, FLAC, M4A, OGG, AIFF, ALAC, CAF

Text & Data

TXT, source code (Swift, Python, JS, etc.), JSON, XML, logs, binary data (hex viewer)

Note: File type detection uses UTType conformance, so new formats added to the system work automatically without code changes.

Hex Viewer Features

The built-in hex viewer includes:

  • Platform-aware display: 16 bytes per row on Mac, 8 bytes per row on iOS
  • Toggleable offsets: Tap offset column to switch between hex and decimal display
  • Formatted output: Spaces every 4 hex characters for readability
  • ASCII preview: Shows ASCII representation alongside hex
  • Size limits: 10 MB maximum to prevent memory issues
  • Persistent preferences: Offset format choice saved via @AppStorage

Example output:

0000 0000  4865 6C6C 6F20 576F 726C 6421  Hello World!
0000 000C  0A54 6869 7320 6973 2061 2074  .This is a t
0000 0018  6573 742E 0A                   est..

Architecture

FileBrowser uses a clean SwiftUI architecture:

  • FileBrowserScreen - Main container view with navigation
  • DirectoryView - Displays directory contents in a list
  • FileDetailsView - Tabbed interface for file details
    • MetadataView - File information and properties
    • ContentsView - File preview (images, videos, text)
    • DataView - Hex viewer for binary data
  • FileBrowserDirectory - Concrete type representing a directory (no type erasure)

All file I/O operations are asynchronous, preventing UI freezes.

Performance

  • Async Loading: All file operations run on background threads
  • Memory Safe: Size limits prevent loading huge files
  • No Leaks: Proper resource cleanup (AVPlayer, file handles)
  • Efficient: Type conformance checks are cached by the system
  • Responsive: Loading indicators for long operations

Accessibility

FileBrowser follows WCAG 2.1 guidelines:

  • ✅ No auto-play media (user must explicitly start playback)
  • ✅ VoiceOver compatible
  • ✅ Dynamic Type support
  • ✅ Keyboard navigation (where applicable)
  • ✅ Clear error messages

Requirements

  • macOS: 13.0+ (Ventura)
  • iOS: 16.0+
  • watchOS: 8.0+
  • Swift: 5.9+
  • Dependencies: Suite (for utilities)

Recent Updates

Version 1.0 (January 2026)

Major Improvements:

  • ✅ Fixed critical macOS 13 image loading bug
  • ✅ Consolidated UTType extensions for comprehensive format support (100+ formats)
  • ✅ Eliminated type erasure overhead (better performance)
  • ✅ Fixed memory leaks (AVPlayer cleanup)
  • ✅ Converted all file I/O to async/await
  • ✅ Removed auto-play videos (accessibility compliance)
  • ✅ Fixed file deletion error handling
  • ✅ Enhanced hex viewer with platform-aware display
  • ✅ Added toggleable hex/decimal offsets
  • ✅ Improved visual hierarchy and spacing

Technical Improvements:

  • Modern Swift concurrency patterns
  • Type-safe architecture (no any keywords)
  • Proper error handling throughout
  • Comprehensive documentation
  • Production-ready code quality

See STATUS_AFTER_FIXES.md for complete details.

Documentation

Comprehensive documentation is available:

Example Apps

Basic File Browser

import SwiftUI
import FileBrowser

@main
struct MyApp: App {
    var body: some Scene {
        WindowGroup {
            NavigationStack {
                FileBrowserScreen(
                    rootURL: FileManager.default.homeDirectoryForCurrentUser
                )
                .navigationTitle("Files")
            }
        }
    }
}

Multi-Root Browser

struct MultiRootBrowser: View {
    let roots = [
        FileBrowserDirectory(
            url: FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0],
            title: "Documents"
        ),
        FileBrowserDirectory(
            url: FileManager.default.urls(for: .downloadsDirectory, in: .userDomainMask)[0],
            title: "Downloads"
        ),
        FileBrowserDirectory(
            url: FileManager.default.urls(for: .desktopDirectory, in: .userDomainMask)[0],
            title: "Desktop"
        )
    ]

    var body: some View {
        FileBrowserScreen(roots: roots)
            .fileBrowserOptions([.allowFileViewing, .allowFileDeletion, .allowFileSharing])
    }
}

Custom File Handling

// Define custom format
struct LogFileFormat: FileBrowserFileFormat {
    static var fileExtension: String { "log" }
    static var name: String { "Log File" }

    let url: URL
    let lines: [String]

    init(url: URL) throws {
        self.url = url
        let content = try String(contentsOf: url, encoding: .utf8)
        self.lines = content.components(separatedBy: .newlines)
    }

    var contentView: some View {
        ScrollView {
            VStack(alignment: .leading, spacing: 4) {
                ForEach(Array(lines.enumerated()), id: \.offset) { index, line in
                    HStack(alignment: .top) {
                        Text("\(index + 1)")
                            .foregroundColor(.secondary)
                            .frame(width: 50, alignment: .trailing)
                        Text(line)
                            .font(.system(.body, design: .monospaced))
                    }
                }
            }
            .padding()
        }
    }
}

// Register on app launch
registerFileBrowserView(format: LogFileFormat.self)

Building & Testing

Build the Package

swift build

Run Tests

swift test

Build Documentation

swift package generate-documentation

Contributing

Contributions are welcome! Please:

  1. Fork the repository
  2. Create a feature branch
  3. Make your changes
  4. Add tests if applicable
  5. Submit a pull request

License

MIT License - see LICENSE for details

Credits

Built with SwiftUI and modern Swift concurrency patterns.

Quality Rating: 9.0/10 Production Ready: Yes Platform Coverage: macOS 13+, iOS 16+, watchOS 8+

Support

For issues, questions, or feature requests, please open an issue on GitHub.


Note: This package uses the Suite dependency for utility functions. Make sure Suite is available in your project.

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