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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Tango.Core;
using Tango.FSE.Common;
namespace Tango.FSE.Procedures.Dialogs
{
public class UserInputDialogViewVM : FSEDialogViewVM
{
public class Parameter
{
public PropertyInfo PropertyInfo { get; set; }
public FieldInfo FieldInfo { get; set; }
public String Name { get; set; }
public String Value { get; set; }
public String TypeName
{
get
{
if (PropertyInfo != null)
{
return PropertyInfo.PropertyType.Name;
}
else if (FieldInfo != null)
{
return FieldInfo.FieldType.Name;
}
return null;
}
}
public Type Type
{
get
{
if (PropertyInfo != null)
{
return PropertyInfo.PropertyType;
}
else if (FieldInfo != null)
{
return FieldInfo.FieldType;
}
else
{
return null;
}
}
}
public bool IsEnum
{
get { return Type == null? false: Type.IsEnum; }
}
public void SetValue(Object obj, Object value)
{
if (PropertyInfo != null)
{
PropertyInfo.SetValue(obj, value);
}
else if (FieldInfo != null)
{
FieldInfo.SetValue(obj, value);
}
}
public Object GetValue(Object obj)
{
if (PropertyInfo != null)
{
return PropertyInfo.GetValue(obj);
}
else if (FieldInfo != null)
{
return FieldInfo.GetValue(obj);
}
return null;
}
}
public String Title { get; set; }
public String Message { get; set; }
public List<Parameter> Parameters { get; set; }
public Object Model { get; set; }
public UserInputDialogViewVM(String title, String message, Object model)
{
CanClose = false;
Title = title;
Message = message;
Parameters = new List<Parameter>();
Model = model;
}
public void Init()
{
try
{
if (Model.GetType().IsValueTypeOrString())
{
Parameter p = new Parameter();
p.Value = Model.ToStringSafe();
p.Name = "Value";
Parameters.Add(p);
}
else
{
foreach (var prop in Model.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public))
{
var att = prop.GetCustomAttribute<UserInput>();
Parameter p = new Parameter();
p.PropertyInfo = prop;
p.Name = att != null ? att.Name : prop.Name.ToTitle();
if (typeof(IEnumerable).IsAssignableFrom(prop.PropertyType) && prop.PropertyType != typeof(String))
{
List<String> objects = new List<string>();
foreach (var item in prop.GetValue(Model) as IEnumerable)
{
objects.Add(item.ToStringSafe());
}
p.Value = String.Join(",", objects);
}
else
{
p.Value = prop.GetValue(Model).ToStringSafe();
}
Parameters.Add(p);
}
foreach (var field in Model.GetType().GetFields(BindingFlags.Instance | BindingFlags.Public))
{
var att = field.GetCustomAttribute<UserInput>();
Parameter p = new Parameter();
p.FieldInfo = field;
p.Name = att != null ? att.Name : field.Name.ToTitle();
if (typeof(IEnumerable).IsAssignableFrom(field.FieldType) && field.FieldType != typeof(String))
{
List<String> objects = new List<string>();
foreach (var item in field.GetValue(Model) as IEnumerable)
{
objects.Add(item.ToStringSafe());
}
p.Value = String.Join(",", objects);
}
else
{
p.Value = field.GetValue(Model).ToStringSafe();
}
Parameters.Add(p);
}
}
}
catch (Exception ex)
{
throw new Exception("Error initializing the user input model.", ex);
}
}
public void FinalizeModel()
{
if (Model.GetType().IsValueTypeOrString())
{
Model = Convert.ChangeType(Parameters.First().Value, Model.GetType());
}
else
{
foreach (var p in Parameters)
{
try
{
if (typeof(IEnumerable).IsAssignableFrom(p.Type) && p.Type != typeof(String))
{
List<String> items = p.Value.Split(',').ToList();
Type genericType = p.Type.GenericTypeArguments[0];
IList list = p.GetValue(Model) as IList;
list.Clear();
foreach (var item in items)
{
list.Add(Convert.ChangeType(item, genericType));
}
}
else
{
if (p.Type.IsEnum)
{
var enumValue = Enum.Parse(p.Type, p.Value.ToString());
p.SetValue(Model, enumValue);
}
else
{
p.SetValue(Model, Convert.ChangeType(p.Value, p.Type));
}
}
}
catch (Exception ex)
{
throw new ArgumentException($"Error setting the value '{p.Value}' for parameter '{p.Name}' of type '{p.Type.Name}'.", ex);
}
}
}
}
}
}
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