TransportableFileWrapper class abstract interface

A wrapper interface for serializing/deserializing TransportableFile data to/from a Map.

The serialized Map follows this structure:

{
  "data": "<base64-encoded file content>", // From [TransportableData]
  "filename": "photo.png",                 // Original file name

  "URL": "http://example.com/photo.png",   // Remote CDN URL (alternative to `data`)
  "key": {                                 // Symmetric decryption key (for encrypted CDN content)
    "algorithm": "AES",                    // Encryption algorithm (e.g., "AES", "DES")
    "data": "<base64-encoded key data>"    // Key material (base64 encoded)
  }
}

Key notes:

• data and URL are mutually exclusive for large files (prefer URL to reduce payload size)
• key is required only if the CDN-hosted content is encrypted

Implementers

• PortableNetworkFileWrapper

Properties

data ↔ TransportableData?

Binary file data (encoded as TransportableData).

getter/setter pair

filename ↔ String?

Original filename of the file (e.g., "avatar.png").

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

password ↔ DecryptKey?

Symmetric decryption key for encrypted file content from url.

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

url ↔ Uri?

Remote CDN URL to download the file (alternative to data for large files).

getter/setter pair

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toMap() → MutableMapping

Converts the wrapper's state to a structured Map (matches the format defined in this class).

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

create(Mapping content, {TransportableData? data, String? filename, Uri? url, DecryptKey? password}) → TransportableFileWrapper