Lovely File Browser  

Seamless file browsing inside the Unity runtime
Fast, multi‑platform, fully themed, and 100 % inside Unity

Lovely File Browser is: 

A lightweight file explorer right where you need it – inside the Unity runtime build. 
Lovely File Browser lets you navigate the operating system’s directories and files with no external plugins.

 It uses `System.Directory()` and built‑in Unity APIs only.  

Works on Windows, macOS, Linux,  any platform that supports .NET System.IO.

Key Features

• Intuitive UI
  Classic file‑browser look, with  draggable window, path bar, back/forward navigation, folder and file icons.

• Fast Rendering
  Reads only paths; renders predefined icons 

• Multi‑Selection
  Single Click  to select multiple files or folders for bulk operations. if Multi select is enabled

• Extension Filters 
  Create Extension  filters (e.g., “Images”, “Shaders”) with any number of extensions (`{".png", ".exr"}`) and apply them instantly when a file browser window opens.
  
  
• Folder‑Only Search
  Dedicated filter to show only directories – for save dialogs or choosing import locations.
  
  
• Path Copy/Paste
  Paste a full path into the address bar to jump directly to any location.
  
  
• Theming & Customization
  Fully style every element: window panels, text colors, background gradients, button icons, and folder/file thumbnails.
  
  
•  Runtime Integration
  Exposes known API methods (`OpenFileWindow()`, `GetSelectedPaths()`, `Fext.SetFilter()`) that you can call from scripts to get paths,  load textures, models, or any file at runtime. 

• Event Driven
  Hook and unhook at need
  
  
• Lovely UI 
  Minimal draw calls, fully responsive to DPI scaling. |

How It Works

1. Open the (Lovely Browser) Window

   LovelyFileBrowser.OpenFilePanel("");

Pops up a file browser window. The address bar shows your current directory. (No path returns  root)

2. Navigate  

•   Click 'Enter' in folders →  Navigates to that folder to  reveal contents. 
•   Use left back  arrow to navigate to parent directory.  
•   Drag the window anywhere within the app  screen.

3. Select Files/Folders  

Click on individual items; and they will remain selected  when multi selection is enabled in the OpenFileWIndow(), otherwise only 1 item will remain selected at a time.

Selected paths can be retrieved when clicking open via Subscribing to:

LovelyFileBrowser.onComplete;

To retrieve your paths with.

LovelyFileBrowser.GetSelectedPaths();

4. Apply Filters

Call : 

Fext.SetFilter("Images", ".png", ".jpg" })` 

Before opening the window, or create them on script.

5. Load Resources

  Use the returned paths with Unity’s standard loading APIs 

• `AssetDatabase.LoadAssetAtPath()`
•  `Resources.Load()`
•  `File.ReadAllBytes()`

 Compatibility

Platform	Support
Windows	Editor and Build
Mac	Editor and Build
Linux	Editor and Build
Android	Runtime
iOS	Runtime

Integration Tips

- Drag the `LovelyFileBrowser.prefab` into your scene or keep it as a singleton via script.  

- Make sure you subscribe and unsubscribe from the .onComplete event. When you open and close or complete a file browser window session. 

Screenshots

Runtime Window – Classic look

Final Note

Whether you simply need to let users pick files on the fly, Lovely gives you a polished, fast, and fully customizable solution that feels native to every platform.