public static NodeUI GetNodeUI(StructCell cell)
{
if (cell is ImageCell)
{
return(new ImageNodeUI((ImageCell)cell));
}
return(null);
}
public static CellUI GetUI(StructCell cell)
{
if (cell is BlobCell)
{
return(new BlobCellUI((BlobCell)cell));
}
return(null);
}
[Test] public void Blob()
{
StructInstance instance = PrepareInstance(
"struct A { blob q [len=4]; calc x [value=CurOffset]; }",
new byte[] { 0xFF, 0xFF, 0xFF, 0xFF });
StructCell cell = instance.Cells[0];
Assert.IsInstanceOfType(typeof(BlobCell), cell);
Assert.AreEqual("FF FF FF FF", cell.Value);
Assert.AreEqual(4, ((BlobCell)cell).DataStream.Length);
Assert.AreEqual("4", instance.Cells[1].Value);
}
private void _structGridView_CellContextMenuStripNeeded(object sender, DataGridViewCellContextMenuStripNeededEventArgs e)
{
if (_structGridView.SelectedRows.Count > 0)
{
StructCell cell = (StructCell)_structGridView.SelectedRows[0].DataBoundItem;
CellUI ui = CellUIRegistry.GetUI(cell);
if (ui != null)
{
ui.ContextMenuStripNeeded(e);
}
else
{
e.ContextMenuStrip = contextMenuStrip1;
}
}
}
public CellSelectedEventArgs(StructCell cell)
{
_cell = cell;
}
public override void LoadData(BinaryReader reader, StructInstance instance)
{
Expression valueExpr = GetExpressionAttribute("value");
if (valueExpr != null)
{
AddCell(instance, valueExpr);
return;
}
int offset = (int)reader.BaseStream.Position;
string value;
int cellSize;
int charSize = 1;
if (_wide)
{
charSize = 2;
}
Expression lengthExpr = GetExpressionAttribute("len");
if (lengthExpr != null)
{
int length = lengthExpr.EvaluateInt(instance);
if (length < 0)
{
throw new LoadDataException("Length expression " + lengthExpr +
" has the result of " + length + " which is negative");
}
cellSize = length * charSize;
if (reader.BaseStream.Length - reader.BaseStream.Position < cellSize)
{
throw new LoadDataException("Length expression " + lengthExpr +
" has the result of " + length + " and points outside the file");
}
byte[] bytes = reader.ReadBytes(length * charSize);
char[] chars = _wide ? Encoding.Unicode.GetChars(bytes) : Encoding.Default.GetChars(bytes);
for (int i = 0; i < length; i++)
{
if (chars[i] == '\0')
{
length = i;
break;
}
}
value = new string(chars, 0, length);
}
else
{
StringBuilder valueBuilder = new StringBuilder();
BinaryReader charReader =
_wide ? new BinaryReader(reader.BaseStream, Encoding.Unicode)
: reader;
while (true)
{
char c = charReader.ReadChar();
if (c == '\0')
{
break;
}
valueBuilder.Append(c);
}
value = valueBuilder.ToString();
cellSize = value.Length * charSize;
}
StructCell cell = AddCell(instance, value, offset);
instance.RegisterCellSize(cell, cellSize);
}
