//we use a static GetNew instead of a public constructor
//as some things like waiting on async operations
//and setting event handlers cannot be done in the
//constructor. the real constructor is kept private
//and only ever called from this static GetNew method
public static async Task <FileMapBySize> GetNew(
IDispatcher d,
IDirectory dir,
DuplicateFileFinder.FileReadError error,
EventHandler onscanned)
{
var fileMapBySize = new FileMapBySize(d);
fileMapBySize.OnFileReadError = error;
fileMapBySize.OnFileScanned = onscanned;
await fileMapBySize.Populate(dir);
return(fileMapBySize);
}
private void NotifyFileReadError(string path, Exception e)
{
DuplicateFileFinder.FileReadError onFileReadError = OnFileReadError;
if (onFileReadError != null)
{
Action action = () => onFileReadError(path, e);
if (dispatcher != null)
{
dispatcher.Execute(action);
}
else
{
action();
}
}
}
