make icon pack snackbar message a bit more mvvm

Author: ButchersBoy

MainDemo.Wpf/Domain/MainWindowViewModel.cs

@@ -4,13 +4,16 @@
 using MaterialDesignThemes.Wpf;
 using MaterialDesignThemes.Wpf.Transitions;
 using System.Windows.Controls;
+using System;
 
 namespace MaterialDesignColors.WpfExample.Domain
 {
     public class MainWindowViewModel
     {
-        public MainWindowViewModel()
+        public MainWindowViewModel(ISnackbarMessageQueue snackbarMessageQueue)
         {
+            if (snackbarMessageQueue == null) throw new ArgumentNullException(nameof(snackbarMessageQueue));
+
             DemoItems = new[]
             {
                 new DemoItem("Home", new Home(),
@@ -92,7 +95,7 @@ public MainWindowViewModel()
                 {
                     VerticalScrollBarVisibilityRequirement = ScrollBarVisibility.Auto
                 },
-                new DemoItem("Icon Pack", new IconPack { DataContext = new IconPackViewModel() },
+                new DemoItem("Icon Pack", new IconPack { DataContext = new IconPackViewModel(snackbarMessageQueue) },
                     new []
                     {
                         DocumentationLink.DemoPageLink<IconPack>("Demo View"),

MainDemo.Wpf/IconPack.xaml

@@ -84,7 +84,7 @@
                 <Button Margin="8 0" Command="{Binding CopyToClipboardCommand, Mode=OneTime}" CommandParameter="{Binding ElementName=KindsListBox, Path=SelectedValue}">
                     <StackPanel Orientation="Horizontal">
                         <materialDesign:PackIcon Kind="ContentCopy"/>
-                        <TextBlock Text="Copy To Clipboard"/>
+                        <TextBlock Text="Copy To Clipboard" Margin="8 0 0 0" />
                     </StackPanel>
                 </Button>
             </StackPanel>

MainDemo.Wpf/IconPackViewModel.cs

@@ -17,17 +17,19 @@ namespace MaterialDesignDemo
     public class IconPackViewModel : INotifyPropertyChanged
     {
         private readonly Lazy<IEnumerable<PackIconKind>> _packIconKinds;
+        private readonly ISnackbarMessageQueue _snackbarMessageQueue;
 
-        public IconPackViewModel()
+        public IconPackViewModel(ISnackbarMessageQueue snackbarMessageQueue)
         {
+            _snackbarMessageQueue = snackbarMessageQueue ?? throw new ArgumentNullException(nameof(snackbarMessageQueue));
+
             OpenDotComCommand = new AnotherCommandImplementation(OpenDotCom);
             SearchCommand = new AnotherCommandImplementation(Search);
             CopyToClipboardCommand = new AnotherCommandImplementation(CopyToClipboard);
             _packIconKinds = new Lazy<IEnumerable<PackIconKind>>(() =>
                 Enum.GetValues(typeof (PackIconKind)).OfType<PackIconKind>()
                     .OrderBy(k => k.ToString(), StringComparer.InvariantCultureIgnoreCase).ToList()
                 );
-
         }
 
         public ICommand OpenDotComCommand { get; }
@@ -66,7 +68,7 @@ private void CopyToClipboard(object obj)
             var kind = (PackIconKind?)obj;
             string toBeCopied = $"<materialDesign:PackIcon Kind=\"{kind}\" />";
             Clipboard.SetDataObject(toBeCopied);
-            MainWindow.Snackbar.MessageQueue.Enqueue(toBeCopied + " is copied to clipboard!");
+            _snackbarMessageQueue.Enqueue(toBeCopied + " copied to clipboard");
         }
 
         public event PropertyChangedEventHandler PropertyChanged;

MainDemo.Wpf/MainWindow.xaml.cs

@@ -17,9 +17,7 @@ public partial class MainWindow : Window {
         public static Snackbar Snackbar;
         public MainWindow()
         {
-            InitializeComponent();            
-
-            DataContext = new MainWindowViewModel();
+            InitializeComponent();                        
 
             Task.Factory.StartNew(() =>
             {
@@ -31,6 +29,8 @@ public MainWindow()
                 MainSnackbar.MessageQueue.Enqueue("Welcome to Material Design In XAML Tookit");
             }, TaskScheduler.FromCurrentSynchronizationContext());
 
+            DataContext = new MainWindowViewModel(MainSnackbar.MessageQueue);
+
             Snackbar = this.MainSnackbar;
         }