custom_file_picker 0.0.1

The file opener hierarchy system allows custom file hierarchies that must not match the running device file system.

Features

This package adds a file opener hierarchy system that is device-independent. So it does not reflect the file system of the running device but can show other custom-specified file hierarchies.

Usage

Create a custom FileData hierarchy

final FileData fileHistory = FileData.createFolder(
    "data",
    DateTime.now(),
    [
      FileData.createFolder("images", DateTime.now(), [
        FileData.createFileFromFileName("next_img.png", DateTime.now()),
        FileData.createFileFromFileName("something.txt", DateTime.now()),
        FileData.createFolder("files", DateTime.now(), [
          FileData.createFileFromFileName("idk.xml", DateTime.now()),
          FileData.createFileFromFileName("something.png", DateTime.now()),
          FileData.createFileFromFileName("test.txt", DateTime.now()),
        ]),
      ]),
      FileData.createFileFromFileName("test.txt", DateTime.now()),
      FileData.createFileFromFileName("idk.urdf", DateTime.now()),
    ],
  );

File Selection

FilePicker.open(fileHistory, ['txt', 'pdf'], (String filePath) {
  // Handle the selected file path
});

File Saving

FileData suggestedFile = FileData.createFile("newFile", "txt", DateTime.now());

FilePicker.saveAs(fileHistory, suggestedFile, (String path) {
  // Handle the selected file path
});

Async Variants

There are also async variants of the open and saveAs functions, in case the whole file history should not be provided right from the start. Whenever the user changes the current file hierarchy level (opens a folder or goes back to the parent) the onSelectedFile function is called where the new file structure for the required hierarchy level can be provided.

Async File Selection

FilePicker.open(fileHistory, ['txt', 'pdf'], (String path) async {
  // Return the FileData for the requested hierarchy path
  return FileData ...
}, (String filePath) {
  // Handle the selected file path
});

Async File Saving

FileData suggestedFile = FileData.createFile("newFile", "txt", DateTime.now());

FilePicker.saveAs(fileHistory, suggestedFile, (String path) async {
  // Return the FileData for the requested hierarchy path
  return FileData ...
}, (String path) {
  // Handle the selected file path
});