Binding function by states and terms done

StructureHelperCommon/Infrastructures/Commands/RelayCommand.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Input;
+
+namespace StructureHelperCommon.Infrastructures.Commands
+{
+    public class RelayCommand : ICommand
+    {
+        private Action<object> execute;
+        private Func<object, bool> canExecute;
+
+        public event EventHandler CanExecuteChanged
+        {
+            add => CommandManager.RequerySuggested += value;
+            remove => CommandManager.RequerySuggested -= value;
+        }
+
+        public RelayCommand(Action<object> execute, Func<object, bool> canExecute = null)
+        {
+            this.execute = execute;
+            this.canExecute = canExecute;
+        }
+
+        public bool CanExecute(object parameter) => canExecute == null || canExecute(parameter);
+
+        public void Execute(object parameter) => execute(parameter);
+    }
+
+}

StructureHelperCommon/Models/Functions/FunctionStorage.cs

@@ -0,0 +1,20 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Functions
+{
+    public class FunctionStorage
+    {
+        public IOneVariableFunction Func_ST_ULS { get; set; }
+        public IOneVariableFunction Func_ST_SLS { get; set; }
+        public IOneVariableFunction Func_ST_Special { get; set; }
+        public IOneVariableFunction Func_LT_ULS { get; set; }
+        public IOneVariableFunction Func_LT_SLS { get; set; }
+        public IOneVariableFunction Func_LT_Special { get; set; }
+
+    }
+}

StructureHelperCommon/Windows/FunctionSelectionVM.cs

@@ -1,4 +1,5 @@
-using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Infrastructures.Commands;
+using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Infrastructures.Settings;
 using StructureHelperCommon.Models.Functions;
 using System;
@@ -7,17 +8,54 @@ using System.Collections.ObjectModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Input;
 
 namespace StructureHelperCommon.Windows
 {
     public class FunctionSelectionVM
     {
+        private RelayCommand createFunctionMaterialCommand;
+        public ICommand CreateFunctionMaterialCommand
+        {
+            get => createFunctionMaterialCommand ??= new RelayCommand(o => CreateFunctionMaterial(o));
+        }
         public string SHORT_TERM { get; } = "Short Term";
         public string LONG_TERM { get; } = "Long Term";
         public string ULS { get; } = "Ultimate Limit State (ULS)";
         public string SLS { get; } = "Serviceability Limit State (SLS)";
         public string SPECIAL { get; } = "Special Limit State";
         public string CREATE_MATERIAL { get; } = "Create Function Material";
+        private const string ERROR_TEXT_1 = "Not all material states have functions ";
         public ObservableCollection<IOneVariableFunction> Functions { get; set; } = ProgramSetting.Functions;
+        public IOneVariableFunction Func_ST_ULS { get; set; }
+        public IOneVariableFunction Func_ST_SLS { get; set; }
+        public IOneVariableFunction Func_ST_Special { get; set; }
+        public IOneVariableFunction Func_LT_ULS { get; set; }
+        public IOneVariableFunction Func_LT_SLS { get; set; }
+        public IOneVariableFunction Func_LT_Special { get; set; }
+        public FunctionStorage FunctionStorage { get; set; } = new();
+        private void CreateFunctionMaterial(object parameter)
+        {
+            var window = parameter as Window;
+            if (Func_ST_ULS == null ||
+                Func_ST_SLS == null ||
+                Func_ST_Special == null ||
+                Func_LT_ULS == null ||
+                Func_LT_SLS == null ||
+                Func_LT_Special == null)
+            {
+                MessageBox.Show($"{ERROR_TEXT_1}");
+                return;
+            }
+            FunctionStorage.Func_ST_ULS = Func_ST_ULS;
+            FunctionStorage.Func_ST_SLS = Func_ST_SLS;
+            FunctionStorage.Func_ST_Special = Func_ST_Special;
+            FunctionStorage.Func_LT_ULS = Func_LT_ULS;
+            FunctionStorage.Func_LT_SLS = Func_LT_SLS;
+            FunctionStorage.Func_LT_Special = Func_LT_Special;
+            window.DialogResult = true;
+            window.Close();
+        }
     } 
 }

StructureHelperCommon/Windows/FunctionSelectionView.xaml

@@ -1,4 +1,5 @@
 <Window x:Class="StructureHelperCommon.Windows.FunctionSelectionView"
+        x:Name="FunctionSelectionView_win"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
@@ -67,20 +68,28 @@
         <TextBlock Grid.Column="2" Grid.Row="0" Text="{Binding SLS}" Style="{StaticResource TextBlockStyle}"/>
         <TextBlock Grid.Column="3" Grid.Row="0" Text="{Binding SPECIAL}" Style="{StaticResource TextBlockStyle}"/>
         <ComboBox Style="{StaticResource FuncComboBox}"
-                  Grid.Column="1" Grid.Row="1"/>
+                  Grid.Column="1" Grid.Row="1"
+                  SelectedItem="{Binding Func_ST_ULS}"/>
         <ComboBox Style="{StaticResource FuncComboBox}"
+                  SelectedItem="{Binding Func_LT_ULS}"
                   Grid.Column="1" Grid.Row="2"/>
         <ComboBox Style="{StaticResource FuncComboBox}"
+                  SelectedItem="{Binding Func_ST_SLS}"
                   Grid.Column="2" Grid.Row="1"/>
         <ComboBox Style="{StaticResource FuncComboBox}"
+                  SelectedItem="{Binding Func_LT_SLS}"
                   Grid.Column="2" Grid.Row="2"/>
         <ComboBox Style="{StaticResource FuncComboBox}"
+                  SelectedItem="{Binding Func_ST_Special}"
                   Grid.Column="3" Grid.Row="1"/>
         <ComboBox Style="{StaticResource FuncComboBox}"
+                  SelectedItem="{Binding Func_LT_Special}"
                   Grid.Column="3" Grid.Row="2"/>
         <Button Grid.Column="3" 
                 Grid.Row="3"
                 Margin="10"
-                Content="{Binding CREATE_MATERIAL}"/>
+                Content="{Binding CREATE_MATERIAL}"
+                Command="{Binding CreateFunctionMaterialCommand}"
+                CommandParameter="{Binding ElementName=FunctionSelectionView_win}"/>
     </Grid>
 </Window>

StructureHelperCommon/Windows/FunctionSelectionView.xaml.cs

@@ -19,11 +19,11 @@ namespace StructureHelperCommon.Windows
     /// </summary>
     public partial class FunctionSelectionView : Window
     {
-        private FunctionSelectionVM viewModel;
+        public FunctionSelectionVM ViewModel {  get; set; }
         public FunctionSelectionView(FunctionSelectionVM viewModel)
         {
-            this.viewModel = viewModel;
-            DataContext = this.viewModel;
+            this.ViewModel = viewModel;
+            DataContext = this.ViewModel;
             InitializeComponent();
         }
         public FunctionSelectionView() : this(new FunctionSelectionVM())