SourceToTargetViewModel was added

Windows/ViewModels/NdmCrossSections/ForceCombinationViewModelLogic.cs

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+using StructureHelper.Infrastructure;
+using StructureHelper.Windows.Forces;
+using StructureHelperCommon.Models.Forces;
+using StructureHelperLogics.Models.Calculations.CalculationProperties;
+using StructureHelperLogics.Models.CrossSections;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using System.Windows.Input;
+
+namespace StructureHelper.Windows.ViewModels.NdmCrossSections
+{
+    public class ForceCombinationViewModelLogic : ViewModelBase, IForceCombinationViewModelLogic
+    {
+        private readonly ICrossSectionRepository repository;
+
+        public IForceCombinationList SelectedItem { get; set; }
+
+        public ObservableCollection<IForceCombinationList> Items
+        {
+            get
+            {
+                var collection = new ObservableCollection<IForceCombinationList>();
+                foreach (var item in repository.ForceCombinationLists)
+                {
+                    collection.Add(item);
+                }
+                return collection;
+            }
+        }
+
+        private RelayCommand addForceCombinationCommand;
+        public RelayCommand Add
+        {
+            get
+            {
+                return addForceCombinationCommand ??
+                    (
+                    addForceCombinationCommand = new RelayCommand(o =>
+                    {
+                        AddCombination();
+                        OnPropertyChanged(nameof(Items));
+                    }));
+            }
+        }
+        private void AddCombination()
+        {
+            var item = new ForceCombinationList() { Name = "New Force Combination" };
+            repository.ForceCombinationLists.Add(item);
+        }
+        private RelayCommand deleteForceCombinationCommand;
+        public RelayCommand Delete
+        {
+            get
+            {
+                return deleteForceCombinationCommand ??
+                    (
+                    deleteForceCombinationCommand = new RelayCommand(o =>
+                    {
+                        DeleteForceCombination();
+                        OnPropertyChanged(nameof(Items));
+                    }, o => SelectedItem != null));
+            }
+        }
+        private void DeleteForceCombination()
+        {
+            var dialogResult = MessageBox.Show("Delete action?", "Please, confirm deleting", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
+            if (dialogResult == DialogResult.Yes)
+            {
+                repository.ForceCombinationLists.Remove(SelectedItem);
+            }
+        }
+        private RelayCommand editForceCombinationCommand;
+        public RelayCommand Edit
+        {
+            get
+            {
+                return editForceCombinationCommand ??
+                    (
+                    editForceCombinationCommand = new RelayCommand(o =>
+                    {
+                        EditForceCombination();
+                        OnPropertyChanged(nameof(Items));
+                    }, o => SelectedItem != null));
+            }
+        }
+        private void EditForceCombination()
+        {
+            var wnd = new ForceCombinationView(SelectedItem);
+            wnd.ShowDialog();
+        }
+
+        public ForceCombinationViewModelLogic(ICrossSectionRepository repository)
+        { 
+            this.repository = repository;
+        }
+    }
+}