private static string EvalComponentExpression(ExpressionParser parser, TemplateToken token, TemplateParserContext context)
{
TemplateToken.ParameterizedExpression pExpr = token.ExtractParameters();
string componentName = pExpr.MainExpression;
if (pExpr.MainExpression.StartsWith("(") && pExpr.MainExpression.EndsWith(")"))
{
componentName = parser.Evaluate <string>(pExpr.MainExpression, context, token.TokenPosition);
}
TemplateParserContext newContext = (TemplateParserContext)context.CreateLocal();
foreach (string varName in pExpr.Parameters.Keys)
{
newContext.SetLocal(varName, parser.Evaluate(pExpr.Parameters[varName], context));
}
ControllerAction viewComponent = WebAppHelper.GetViewComponent(componentName);
if (viewComponent == null)
{
throw new TemplateRenderingException("View component " + componentName + " not found", token.TokenPosition);
}
try
{
return(WebAppHelper.RunViewComponent(viewComponent, newContext));
}
catch (Exception e)
{
throw new TemplateRenderingException("Error rendering view component " + componentName, e, token.TokenPosition);
}
}
private static string EvalTranslationExpression(ExpressionParser parser, TemplateToken token, TemplateParserContext context)
{
int parenIdx = token.Text.IndexOf('(');
string tag = token.Text;
string parameters = null;
if (parenIdx > 0)
{
parameters = token.Text.Substring(parenIdx + 1);
tag = token.Text.Substring(0, parenIdx).Trim();
}
string translation = TranslationHelper.GetTranslation(context.View.ViewName, tag);
if (translation == null)
{
return("{?{" + tag + "}?}");
}
if (parameters != null)
{
IParserContext localContext = context.CreateLocal();
localContext.Set("__Translation__", translation);
translation = parser.Evaluate <string>("string.Format(__Translation__," + parameters, localContext, token.TokenPosition);
}
return(translation);
}
