public void asyncDownload() {
try {
this_mon.enter();
if (current_index == max_to_try || cancelled) {
done_sem.release();
informFailed((ResourceDownloaderException) result);
} else {
current_downloader = ((ResourceDownloaderBaseImpl) delegates[current_index]).getClone(this);
informActivity(getLogIndent() + "Downloading: " + getName());
current_index++;
current_downloader.addListener(this);
current_downloader.asyncDownload();
}
} finally {
this_mon.exit();
}
}
public boolean completed(ResourceDownloader downloader, InputStream data) {
if (informComplete(data)) {
result = data;
done_sem.release();
return (true);
}
return (false);
}
public void cancel() {
setCancelled();
try {
this_mon.enter();
result = new ResourceDownloaderCancelledException(this);
cancelled = true;
informFailed((ResourceDownloaderException) result);
done_sem.release();
if (current_downloader != null) {
current_downloader.cancel();
}
} finally {
this_mon.exit();
}
}
public InputStream download() throws ResourceDownloaderException {
if (delegates.length == 0) {
ResourceDownloaderException error =
new ResourceDownloaderException(this, "Alternate download fails - 0 alteratives");
informFailed(error);
throw (error);
}
asyncDownload();
done_sem.reserve();
if (result instanceof InputStream) {
return ((InputStream) result);
}
throw ((ResourceDownloaderException) result);
}