Downloader

fun cancel(): Unit

Permanently cancels the downloading by this downloader. The caller should also interrupt the downloading thread immediately after calling this method.

Once canceled, download cannot be called again.

fun download(progressListener: Downloader.ProgressListener?): Unit

Downloads the content.

If downloading fails, this method can be called again to resume the download. It cannot be called again after the download has been canceled.

If downloading is canceled whilst this method is executing, then it is expected that it will return reasonably quickly. However, there are no guarantees about how the method will return, meaning that it can return without throwing, or by throwing any of its documented exceptions. The caller must use its own knowledge about whether downloading has been canceled to determine whether this is why the method has returned, rather than relying on the method returning in a particular way.

fun remove(): Unit

Removes the content.