public static string GenerateClientPostBackScript(string propertyName, ICommandBinding expression, DotvvmControl control, PostbackScriptOptions options)
{
object uniqueControlId = null;
if (expression is ControlCommandBindingExpression)
{
var target = (DotvvmControl)control.GetClosestControlBindingTarget();
uniqueControlId = target.GetDotvvmUniqueId();
}
var arguments = new List <string>()
{
"'root'",
options.ElementAccessor,
"[" + String.Join(", ", GetContextPath(control).Reverse().Select(p => '"' + p + '"')) + "]",
(uniqueControlId is IValueBinding ? "{ expr: " + JsonConvert.ToString(((IValueBinding)uniqueControlId).GetKnockoutBindingExpression(), '\'', StringEscapeHandling.Default) + "}" : "'" + (string)uniqueControlId + "'"),
options.UseWindowSetTimeout ? "true" : "false",
JsonConvert.SerializeObject(GetValidationTargetExpression(control)),
"null",
GetPostBackHandlersScript(control, propertyName)
};
// return the script
var condition = options.IsOnChange ? "if (!dotvvm.isViewModelUpdating) " : null;
var returnStatement = options.ReturnValue != null ? $";return {options.ReturnValue.ToString().ToLower()};" : "";
// call the function returned from binding js with runtime arguments
var postBackCall = $"{expression.GetCommandJavascript()}({String.Join(", ", arguments)})";
return(condition + postBackCall + returnStatement);
}
public static string GenerateClientPostBackScript(string propertyName, ICommandBinding expression, DotvvmControl control, PostbackScriptOptions options)
{
object uniqueControlId = null;
var target = (DotvvmControl)control.GetClosestControlBindingTarget();
uniqueControlId = target?.GetDotvvmUniqueId();
var arguments = new List <string>()
{
"'root'",
options.ElementAccessor,
"[" + string.Join(", ", GetContextPath(control).Reverse().Select(p => '"' + p + '"')) + "]",
(uniqueControlId is IValueBinding ? "{ expr: " + JsonConvert.ToString(((IValueBinding)uniqueControlId).GetKnockoutBindingExpression(), '\'', StringEscapeHandling.Default) + "}" : "'" + (string)uniqueControlId + "'"),
options.UseWindowSetTimeout ? "true" : "false",
JsonConvert.SerializeObject(GetValidationTargetExpression(control)),
"null",
GetPostBackHandlersScript(control, propertyName)
};
// return the script
var returnStatement = options.ReturnValue != null ? $";return {options.ReturnValue.ToString().ToLower()};" : "";
if (expression is StaticCommandBindingExpression)
{
if (arguments.Last() != "null" && arguments.Last() != "[]")
{
throw new NotSupportedException($"PostBack.Handlers are not supported for staticCommand binding");
}
// static command only requires the first argument
arguments.RemoveRange(1, arguments.Count - 1);
}
// call the function returned from binding js with runtime arguments
var postBackCall = $"{expression.GetCommandJavascript()}({string.Join(", ", arguments)})";
if (options.UseWindowSetTimeout && expression is StaticCommandBindingExpression)
{
postBackCall = "setTimeout(function(){" + postBackCall + "}.bind(this),0)";
}
if (options.IsOnChange)
{
postBackCall = $"if(!dotvvm.isViewModelUpdating){{{postBackCall}}}";
}
return(postBackCall + returnStatement);
}