private AssociatedHandler(IAssocHandler handler, IDataObject dao)
{
this.Handler = handler;
this.Dao = dao;
this.Name = handler.GetName();
this.DisplayName = handler.GetUIName();
}
/// <summary>
/// Refresh using the IAssocHandler
/// </summary>
/// <param name="handler"></param>
internal void Refresh(IAssocHandler handler)
{
string pth = null;
int idx = 0;
_Handler = handler;
Preferred = _Handler.IsRecommended() == HResult.Ok;
string argppsz = ExePath;
handler.GetName(out argppsz);
ExePath = argppsz;
if (File.Exists(ExePath) == false)
{
throw new SystemException("Program path not found");
}
handler.GetUIName(out string strRet);
UIName = strRet;
handler.GetIconLocation(out pth, out idx);
Icon = Resources.LoadLibraryIcon(pth, idx, IconSize);
if (Icon is null)
{
int iix = (int)NativeShell.Shell_GetCachedImageIndex(pth, idx, 0U);
switch (IconSize)
{
case StandardIcons.Icon256:
Icon = Resources.GetFileIconFromIndex(iix, Resources.SystemIconSizes.Jumbo);
break;
case StandardIcons.Icon48:
Icon = Resources.GetFileIconFromIndex(iix, Resources.SystemIconSizes.ExtraLarge);
break;
case StandardIcons.Icon32:
Icon = Resources.GetFileIconFromIndex(iix, Resources.SystemIconSizes.Large);
break;
default:
Icon = Resources.GetFileIconFromIndex(iix, Resources.SystemIconSizes.Small);
break;
}
}
}
/// <summary>
/// Retrieves a UIHandler object base on the IAssocHandler from a cache or creates and returns a new one if it does not already exist.
/// </summary>
/// <param name="assoc">The IAssocHandler from which to build the new object.</param>
/// <param name="ext">The Extension of the file type the IAssocHandler handles.</param>
/// <returns>A new UIHandler object</returns>
/// <remarks></remarks>
internal UIHandler HandlerFromAssocHandler(IAssocHandler assoc, string ext)
{
UIHandler HandlerFromAssocHandlerRet = default;
string exepath = null;
assoc.GetName(out exepath);
foreach (var u in _UICol)
{
if ((exepath ?? "") == (u.ExePath ?? ""))
{
u.AddExt(ext);
return(u);
}
}
HandlerFromAssocHandlerRet = new UIHandler(assoc, this);
HandlerFromAssocHandlerRet.AddExt(ext);
_UICol.Add(HandlerFromAssocHandlerRet);
return(HandlerFromAssocHandlerRet);
}