public static void PrepareComputedField(WidgetContext context, IWidget widget, BaseField field)
{
var exp = field.ComputeExpression;
foreach (var f in exp.KeyWords)
{
context.FormContext.AddMissingField(f);
}
var feture = new WidgetFeature();
feture.Depends = exp.KeyWords;
feture.Add(ViewConstant.Expression, exp);
AddFeature(widget, feture, "EVAL");
}
private static void AddFeature(IWidget widget, WidgetFeature feature, string type)
{
if (widget.Features == null)
{
widget.Features = new WidgetFeatures();
}
if (type == "EVAL")
{
widget.Features.Eval = feature;
}
else if (type == "INVISIBLE")
{
widget.Features.Invisible = feature;
}
else if (type == "READONLY")
{
widget.Features.ReadOnly = feature;
}
}
private static void BuildReadonly(WidgetContext context, IWidget widget, BaseField field, TField layoutField)
{
if (layoutField == null || String.IsNullOrEmpty(layoutField.ReadOnly))
{
return;
}
var exp = layoutField.ReadOnly;
if (exp == "1")
{
widget.IsReadOnly = true;
return;
}
else if (exp == "2") //ReadonlyOnEdit
{
var ent = context.FormContext.Entity;
if (ent != null)
{
exp = @"[{""" + ent.IDField + @""": [3,0]}]";
}
else
{
return;
}
}
var formContext = context.FormContext;
var criteria = FilterExpression.BuildFromJson(formContext.Entity.EntityId, exp);
AddMissingFields(context.FormContext, criteria);
var feture = new WidgetFeature();
feture.Depends = criteria.GetFieldNames() as List <string>;
feture.Criteria = new FormFilterExpression(formContext, criteria);
AddFeature(widget, feture, "READONLY");
}