public void Update(MetaDataTagItem.Data data, TableDefinitionModel tableDef)
{
if (data == null)
{
SelectedItemSize = 0;
ByteStream = null;
SelectedItemBytesLeft = 0;
HasUniformByteSize = false;
BackgroundBlocks.Clear();
for (int i = 0; i < Fields.Count; i++)
{
UpdateViewModel(Fields[i], new byte[0], 0);
}
return;
}
HasUniformByteSize = _activeMetaDataContent.SelectedTagType.DataItems.Select(x => x.Size).Distinct().Count() == 1;
SelectedItemSize = data.Size;
ByteStream = new MemoryStream(data.Bytes, data.Start, data.Size);
BackgroundBlocks.Clear();
int counter = 0;
var endIndex = tableDef.Definition.ColumnDefinitions.Count();
int index = data.Start;
for (int i = 0; i < endIndex; i++)
{
if (i < endIndex)
{
var byteParserType = tableDef.Definition.ColumnDefinitions[i].Type;
var parser = ByteParserFactory.Create(byteParserType);
parser.TryDecode(data.Bytes, index, out _, out var bytesRead, out _);
index += bytesRead;
var block = new CustomBackgroundBlock()
{
Description = tableDef.Definition.ColumnDefinitions[i].Name,
Color = counter % 2 == 0 ? new SolidColorBrush(Colors.Red) : new SolidColorBrush(Colors.Yellow),
Length = bytesRead,
StartOffset = index - bytesRead - data.Start,
};
BackgroundBlocks.Add(block);
counter++;
}
}
SelectedItemBytesLeft = SelectedItemSize - (index - data.Start);
for (int i = 0; i < Fields.Count; i++)
{
UpdateViewModel(Fields[i], data.Bytes, index);
}
}
void Create(DbTypesEnum enumValue)
{
var type = ByteParserFactory.Create(enumValue);
SingleFieldExplporer newItem = new SingleFieldExplporer();
newItem.EnumValue = enumValue;
newItem.CustomDisplayText = type.TypeName;
newItem.ButtonText = "Add";
newItem.CustomButtonPressedCommand = new RelayCommand <SingleFieldExplporer>(OnButtonPressed);
Fields.Add(newItem);
}
void UpdateViewModel(SingleFieldExplporer viewModelRef, byte[] data, int index)
{
var parser = ByteParserFactory.Create(viewModelRef.EnumValue);
var result = parser.TryDecode(data, index, out string value, out var _, out string error);
if (result == false)
{
viewModelRef.ValueText = "Error:" + error;
viewModelRef.BackgroundColour = new SolidColorBrush(Colors.Pink);
}
else
{
viewModelRef.ValueText = value;
viewModelRef.BackgroundColour = new SolidColorBrush(Colors.White);
}
}
