ScriptDoubleParameterNode.cs

using System.Threading.Tasks;
using Waher.Content;
using Waher.Networking.XMPP.Concentrator;
using Waher.Networking.XMPP.DataForms;
using Waher.Networking.XMPP.DataForms.DataTypes;
using Waher.Networking.XMPP.DataForms.FieldTypes;
using Waher.Networking.XMPP.DataForms.Layout;
using Waher.Networking.XMPP.DataForms.ValidationMethods;
using Waher.Runtime.Language;
using Waher.Script;
using Waher.Things.Attributes;
 
namespace Waher.Things.Script.Parameters
{
    public class ScriptDoubleParameterNode : ScriptParameterNodeWithOptions
    {
        public ScriptDoubleParameterNode()
            : base()
        {
        }
 
        [Page(2, "Script", 100)]
        [Header(29, "Default value:")]
        [ToolTip(30, "Default value presented to user.")]
        public double? DefaultValue { get; set; }
 
        [Page(2, "Script", 100)]
        [Header(44, "Minimum Value:")]
        [ToolTip(45, "The smallest value allowed.")]
        public double? Min { get; set; }
 
        [Page(2, "Script", 100)]
        [Header(46, "Maximum Value:")]
        [ToolTip(47, "The largest value allowed.")]
        public double? Max { get; set; }
 
        public override Task<string> GetTypeNameAsync(Language Language)
        {
            return Language.GetStringAsync(typeof(ScriptNode), 59, "Double-precision floating-point parameter");
        }
 
        public override async Task PopulateForm(DataForm Parameters, Language Language, object Value)
        {
            ValidationMethod Validation;
            Field Field;
 
            if (this.Min.HasValue || this.Max.HasValue)
            {
                Validation = new RangeValidation(
                    this.Min.HasValue ? CommonTypes.Encode(this.Min.Value) : null,
                    this.Max.HasValue ? CommonTypes.Encode(this.Max.Value) : null);
            }
            else
                Validation = new BasicValidation();
 
            if (this.RestrictToOptions)
            {
                Field = new ListSingleField(Parameters, this.ParameterName, this.Label, this.Required,
                    new string[] { this.DefaultValue.HasValue ? CommonTypes.Encode(this.DefaultValue.Value) : string.Empty },
                    await this.GetOptions(), this.Description, DoubleDataType.Instance, Validation, string.Empty, false, false, false);
            }
            else
            {
                Field = new TextSingleField(Parameters, this.ParameterName, this.Label, this.Required,
                    new string[] { this.DefaultValue.HasValue ? CommonTypes.Encode(this.DefaultValue.Value) : string.Empty },
                    await this.GetOptions(), this.Description, DoubleDataType.Instance, Validation, string.Empty, false, false, false);
            }
 
            Parameters.Add(Field);
 
            Page Page = Parameters.GetPage(this.Page);
            Page.Add(Field);
        }
 
        public override async Task SetParameter(DataForm Parameters, Language Language, bool OnlySetChanged, Variables Values,
            SetEditableFormResult Result)
        {
            Field Field = Parameters[this.ParameterName];
            if (Field is null)
            {
                if (this.Required)
                    Result.AddError(this.ParameterName, await Language.GetStringAsync(typeof(ScriptNode), 42, "Required parameter."));
 
                Values[this.ParameterName] = null;
            }
            else
            {
                string s = Field.ValueString;
 
                if (string.IsNullOrEmpty(s))
                {
                    if (this.Required)
                        Result.AddError(this.ParameterName, await Language.GetStringAsync(typeof(ScriptNode), 42, "Required parameter."));
 
                    Values[this.ParameterName] = null;
                }
                else if (CommonTypes.TryParse(s, out double Parsed))
                    Values[this.ParameterName] = Parsed;
                else
                    Result.AddError(this.ParameterName, await Language.GetStringAsync(typeof(ScriptNode), 49, "Invalid value."));
            }
        }
 
    }
}