ensemble_file_manager 1.2.55

File picking and gallery-saving implementation for Ensemble apps.

Ensemble File Manager

ensemble_file_manager is the native implementation behind Ensemble's pickFiles action and image-saving hook. It wires the Ensemble runtime to file_picker for user-selected files and to vision_gallery_saver for saving generated images, while keeping the public API exposed through Ensemble's FileManager interface.

Features

• Pick one or more files from the platform file picker.
• Restrict file selection with allowedExtensions when using the files source.
• Pick gallery media as images, videos, or mixed media based on source and extension options.
• Return selected file metadata into Ensemble data context under the action id.
• Save generated image bytes to the platform gallery/DCIM integration used by Ensemble's save-file and screenshot actions.

Getting started

This package is normally enabled from the Starter app module scripts. The script adds the package dependency, registers FileManagerImpl, and inserts platform permissions/settings:

cd starter
dart scripts/modules/enable_files.dart platform=android,ios

For manual setup, add the package and register the implementation before the app uses file actions:

dependencies:
  ensemble_file_manager:
    git:
      url: https://github.com/EnsembleUI/ensemble.git
      ref: main
      path: modules/file_manager

import 'package:ensemble/framework/stub/file_manager.dart';
import 'package:ensemble_file_manager/file_manager.dart';
import 'package:get_it/get_it.dart';

GetIt.I.registerSingleton<FileManager>(FileManagerImpl());

If the implementation is not registered, Ensemble uses FileManagerStub and file actions fail with a configuration error.

Usage

Pick files from an Ensemble screen

Button:
  label: Select PDF files
  onTap:
    pickFiles:
      id: selectedFiles
      source: files
      allowedExtensions:
        - pdf
      allowMultiple: true
      onComplete:
        showToast:
          message: ${selectedFiles.files[0].name}
      onError:
        showToast:
          message: Could not select files

After a successful pick, the action stores a FileData object under the action id. Access selected files as ${selectedFiles.files}. Each file is serialized with:

Field	Description
name	Original file name reported by the picker.
extension	File extension reported by the picker.
size	File size in bytes.
path	Native file path when available. This is null on web.
bytes	In-memory bytes when the picker supplies them.
mediaType	Inferred media type: image, video, audio, or unknown.

Source and extension behavior

• source: files or an omitted source uses FileType.custom only when allowedExtensions is set; otherwise it allows any file type.
• source: gallery maps any image extension (jpg, jpeg, png, gif, bmp) to the image picker. If no image extension is present, any video extension (mp4, avi, mkv, flv, wmv) maps to the video picker. Without a recognized extension list, gallery picks mixed media.
• allowCompression defaults to true; allowMultiple defaults to false.
• Cancelling the picker returns no files and runs onError when provided.

Platform notes

The enable script adds the storage/media permissions used by Android and the photo library/document settings used by iOS. Review generated platform files when your app needs a narrower permission set; the script accepts a permissions argument for Android permission selection.

On web, selected files do not expose a local path. Use file metadata and bytes instead of assuming ${file.path} is present.