changeToParentDirectory method
Changes the current working directory to the parent directory. Implementations must handle path resolution and update the internal state correctly, including checks for navigating above the root.
Implementation
@override
void changeToParentDirectory() {
if (currentDirectory == rootDirectory) {
throw FileSystemException("Cannot navigate above root", currentDirectory);
}
// Calculate parent virtual directory using path package
final parentVirtualDir = p.dirname(currentDirectory);
// Use changeDirectory to handle the logic and state update
changeDirectory(parentVirtualDir);
}