internal string GetChangedAndOldValuesRendering(string prefix, HtmlHelper <TModel> htmlHelper)
{
StringBuilder sb = new StringBuilder();
sb.Append(BasicHtmlHelper.SafeHidden(htmlHelper, BasicHtmlHelper.AddField(prefix, "$.Item.Changed"), this.Item.Changed).ToString());
if (this.Item != null && this.Item.OldValue != null)
{
prefix = BasicHtmlHelper.AddField(prefix, "$.Item.OldValue");
if (fieldsToStore != null)
{
foreach (LambdaExpression l in fieldsToStore)
{
object val = null;
string name = ExpressionHelper.GetExpressionText(l);
try
{
val = l.Compile().DynamicInvoke(this.Item.OldValue);
}
catch
{
}
if (val is IConvertible || val is Guid)
{
string res = BasicHtmlHelper.SafeHidden(htmlHelper,
BasicHtmlHelper.AddField(prefix, name), val).ToString();
sb.Append(res);
}
else
{
MVCControlsToolkit.Controls.Bindings.ModelTranslatorLight model = new MVCControlsToolkit.Controls.Bindings.ModelTranslatorLight();
model.ImportFromModel(val);
sb.Append(BasicHtmlHelper.RenderDisplayInfo(htmlHelper, typeof(MVCControlsToolkit.Controls.Bindings.ModelTranslatorLight),
BasicHtmlHelper.AddField(prefix, name)));
string res = BasicHtmlHelper.SafeHidden(htmlHelper,
BasicHtmlHelper.AddField(prefix, name + ".$.JSonModel"), model.JSonModel).ToString();
sb.Append(res);
}
}
}
else
{
Stack <object> recursionControl = new Stack <object>();
recursionControl.Push(this.Item.OldValue);
addObjectPropertiesTorender(prefix, htmlHelper, sb, propertiesToStore, this.Item.OldValue, recursionControl);
recursionControl.Pop();
}
}
return(sb.ToString());
}
private void addObjectPropertiesTorender(string prefix,
HtmlHelper <TModel> htmlHelper,
StringBuilder sb,
PropertyInfo[] propertiesToStore,
object obj,
Stack <object> recursionControl)
{
foreach (PropertyInfo pi in propertiesToStore)
{
if (pi.GetIndexParameters().GetLength(0) > 0)
{
continue;
}
object val = pi.GetValue(obj, new object[0]);
if (val is IConvertible)
{
string res = BasicHtmlHelper.SafeHidden(htmlHelper,
BasicHtmlHelper.AddField(prefix, pi.Name), val).ToString();
sb.Append(res);
}
else if (val is IEnumerable)
{
bool recursion = false;
foreach (object ob in recursionControl)
{
if (object.ReferenceEquals(val, ob))
{
recursion = true;
}
;
}
if (recursion)
{
continue;
}
recursionControl.Push(val);
addIEnumerablePropertiesTorender(
BasicHtmlHelper.AddField(prefix, pi.Name),
htmlHelper,
sb,
val as IEnumerable,
recursionControl);
recursionControl.Pop();
}
else if (val != null)
{
bool recursion = false;
foreach (object ob in recursionControl)
{
if (object.ReferenceEquals(val, ob))
{
recursion = true;
}
}
if (recursion)
{
continue;
}
recursionControl.Push(val);
addObjectPropertiesTorender(
BasicHtmlHelper.AddField(prefix, pi.Name),
htmlHelper,
sb,
BasicHtmlHelper.GetPropertiesForInput(val.GetType()), val, recursionControl);
recursionControl.Pop();
}
}
}
private void addIEnumerablePropertiesTorender(
string prefix,
HtmlHelper <TModel> htmlHelper,
StringBuilder sb,
IEnumerable en,
Stack <object> recursionControl)
{
int i = 0;
foreach (object obj in en)
{
if (obj == null)
{
i++;
continue;
}
if (obj is IEnumerable)
{
bool recursion = false;
foreach (object ob in recursionControl)
{
if (object.ReferenceEquals(obj, ob))
{
recursion = true;
}
}
if (recursion)
{
continue;
}
recursionControl.Push(obj);
addIEnumerablePropertiesTorender(
string.Format("{0}[{1}]", prefix, i),
htmlHelper,
sb,
obj as IEnumerable,
recursionControl);
recursionControl.Pop();
}
else if (obj is IConvertible)
{
string res = BasicHtmlHelper.SafeHidden(htmlHelper,
string.Format("{0}[{1}]", prefix, i), obj).ToString();
sb.Append(res);
i++;
}
else
{
bool recursion = false;
foreach (object ob in recursionControl)
{
if (object.ReferenceEquals(obj, ob))
{
recursion = true;
}
}
if (recursion)
{
continue;
}
recursionControl.Push(obj);
addObjectPropertiesTorender(
string.Format("{0}[{1}]", prefix, i),
htmlHelper,
sb,
BasicHtmlHelper.GetPropertiesForInput(obj.GetType()),
obj,
recursionControl);
recursionControl.Pop();
}
}
}
