private void RaiseShaderNameChanged(ShaderNameChangedEventArgs e)
{
SetNewShaderName(e);
if (!e.OldValue.Equals(e.Shader.Name))
{
e.Shader.Move(Workspace);
}
}
private void SetNewShaderName(ShaderNameChangedEventArgs e)
{
string newValue = e.NewValue;
string oldValue = e.OldValue;
Shader shader = e.Shader;
string extension;
if (shader.ShaderType == ShaderType.Header)
{
extension = ".hlsli";
}
else
{
extension = ".hlsl";
}
// Check if new name is a valid filename, if not reset to old
try
{
if (string.IsNullOrWhiteSpace(newValue) || newValue.LastIndexOf('.') == 0 || !newValue.Equals(Path.GetFileName(newValue)))
{
shader.Name = oldValue;
return;
}
}
catch (Exception)
{
shader.Name = oldValue;
return;
}
// Check if it ends with the correct extension, if not add it
if (!newValue.EndsWith(extension))
{
int startPos = newValue.LastIndexOf('.');
if (startPos == -1)
{
startPos = newValue.Length;
}
newValue = newValue.Substring(0, startPos) + extension;
}
// If filename already in use add a counter
IEnumerable <string> shaders = shader.Group.Shaders.Where((s) => s != shader).Select((s) => s.Name);
string filename = Path.GetFileNameWithoutExtension(newValue);
int counter = 0;
while (shaders.Contains(newValue))
{
++counter;
newValue = $"{filename}_{counter.ToString("D3")}{extension}";
if (counter == 999)
{
// Unable to find free name
shader.Name = oldValue;
return;
}
}
shader.Name = newValue;
shader.Group.Save(Workspace);
}
