/// <summary>
/// Downloads a buddy icon from the AIM servers
/// </summary>
/// <param name="screenName">The screenname to which the icon belongs</param>
/// <param name="iconId">The ID of the icon stored on the server</param>
public void DownloadBuddyIcon(string screenName, BartID iconId)
{
// Check to make sure the icon ID is valid and actually a buddy icon
if (iconId == null || iconId.Data == null ||
!(iconId.Type == BartTypeId.BuddyIcon || iconId.Type == BartTypeId.BigBuddyIcon))
{
return;
}
// Check to see if the icon's cached, if the cache location is set
if (!String.IsNullOrEmpty(AutoSaveLocation))
{
string saveLocation = Path.Combine(AutoSaveLocation, iconId.ToString());
if (File.Exists(saveLocation))
{
OnBuddyIconDownloaded(screenName, iconId, saveLocation);
return;
}
}
// Check to see if there's already a request in progress for this icon ID
if (currentlyDownloading.Contains(iconId))
{
return;
}
currentlyDownloading.Add(iconId);
SNACHeader sh = new SNACHeader();
sh.FamilyServiceID = SNAC_BART_FAMILY;
sh.FamilySubtypeID = BART_DOWNLOAD;
sh.Flags = 0;
ByteStream stream = new ByteStream();
stream.WriteByte((byte)Encoding.ASCII.GetByteCount(screenName));
stream.WriteString(screenName, Encoding.ASCII);
stream.WriteByte(0x01);
stream.WriteBartID(iconId);
SNACFunctions.BuildFLAP(Marshal.BuildDataPacket(parent, sh, stream));
}