MediaParameter.cs

using System.Threading.Tasks;
using System.Xml;
using Waher.Networking.XMPP.Concentrator;
using Waher.Networking.XMPP.DataForms;
using Waher.Networking.XMPP.DataForms.FieldTypes;
using Waher.Networking.XMPP.DataForms.Layout;
using Waher.Reports.Model.Attributes;
using Waher.Runtime.Language;
using Waher.Script;
 
namespace Waher.Reports.Files.Model.Parameters
{
    public class MediaParameter : ReportParameter
    {
        private readonly ReportStringAttribute url;
        private readonly ReportStringAttribute contentType;
        private readonly ReportUInt16Attribute width;
        private readonly ReportUInt16Attribute height;
 
        public MediaParameter(XmlElement Xml)
            : base(Xml)
        {
            this.url = new ReportStringAttribute(Xml, "url");
            this.contentType = new ReportStringAttribute(Xml, "contentType");
            this.width = new ReportUInt16Attribute(Xml, "width");
            this.height = new ReportUInt16Attribute(Xml, "height");
        }
 
        public override async Task PopulateForm(DataForm Parameters, Language Language, Variables Variables)
        {
            ReportParameterAttributes Attributes = await this.GetReportParameterAttributes(Variables);
            string Url = await this.url.Evaluate(Variables);
            string ContentType = await this.contentType.Evaluate(Variables);
            ushort? Width = this.width.IsEmpty ? null : (ushort?)await this.width.Evaluate(Variables);
            ushort? Height = this.height.IsEmpty ? null : (ushort?)await this.height.Evaluate(Variables);
 
            Media Media = new Media(Url, ContentType, Width, Height);
            MediaField Field = new MediaField(Attributes.Name, Attributes.Label, Media);
 
            Parameters.Add(Field);
 
            Page Page = Parameters.GetPage(Attributes.Page);
            Page.Add(Field);
        }
 
        public override Task SetParameter(DataForm Parameters, Language Language, bool OnlySetChanged, Variables Variables,
            SetEditableFormResult Result)
        {
            return Task.CompletedTask;
        }
 
    }
}