PartInfo.cs

using LegalLab.Models.Design;
using LegalLab.Models.Items;
using System.Threading.Tasks;
using System.Windows.Input;
using Waher.Networking.XMPP.Contracts;
 
namespace LegalLab.Models.Legal.Items
{
    public class PartInfo : OrderedItem
    {
        private readonly Property<string> legalId;
        private readonly Property<string> role;
        private readonly IPartsModel partsModel;
 
        private readonly Command removePart;
 
        private readonly Part part;
 
        public PartInfo(Part Part, IPartsModel PartsModel, Property<PartInfo[]> Parts)
            : base(Parts)
        {
            this.legalId = new Property<string>(nameof(this.LegalId), Part.LegalId, this);
            this.role = new Property<string>(nameof(this.Role), Part.Role, this);
 
            this.partsModel = PartsModel;
            this.part = Part;
 
            this.removePart = new Command(this.CanExecuteRemovePart, this.ExecuteRemovePart);
 
            if (this.partsModel is not null)
                this.partsModel.PropertyChanged += this.DesignModel_PropertyChanged;
        }
 
        public Part Part => this.part;
 
        public string LegalId
        {
            get => this.legalId.Value;
            set
            {
                this.part.LegalId = value;
                this.legalId.Value = value;
            }
        }
 
        public string Role
        {
            get => this.role.Value;
            set
            {
                this.part.Role = value;
                this.role.Value = value;
            }
        }
 
        public string[] Roles => this.partsModel.RoleNames;
 
        private void DesignModel_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
        {
            if (e.PropertyName == nameof(this.Roles))
                this.RaisePropertyChanged(nameof(this.Roles));
        }
 
        public ICommand RemovePart => this.removePart;
 
        public bool CanExecuteRemovePart()
        {
            return this.partsModel is not null;
        }
 
        public Task ExecuteRemovePart()
        {
            if (this.partsModel is not null)
            {
                this.partsModel.PropertyChanged -= this.DesignModel_PropertyChanged;
                this.partsModel.RemovePart(this);
            }
    
            return Task.CompletedTask;
        }
    }
}