ADD MVVM Sample.

NTFY-24

git-svn-id: https://svn.evolvesoftware.ch/repos/evolve.net/WPF/NotifyIcon@198 9f600761-6f11-4665-b6dc-0185e9171623

Source/Sample Project/Tutorials/09 - MVVM/ClockPopup.xaml

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+<UserControl 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"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d"
+             x:Class="Samples.Tutorials.MvvmSample.ClockPopup"
+             x:Name="UserControl"
+             Height="141"
+             Width="304">
+    <UserControl.Background>
+        <LinearGradientBrush EndPoint="0.5,1"
+                             StartPoint="0.5,0">
+            <GradientStop Color="#FFA8A8A8"
+                          Offset="0" />
+            <GradientStop Color="White"
+                          Offset="1" />
+        </LinearGradientBrush>
+    </UserControl.Background>
+
+    <Grid x:Name="LayoutRoot">
+        <Rectangle Stroke="#FF727272"/>
+        <Image Source="Clock.png"
+               Stretch="Fill"
+               Height="128"
+               VerticalAlignment="Top"
+               HorizontalAlignment="Left"
+               Width="128"
+               Margin="10,10,0,0" />
+    	<TextBlock HorizontalAlignment="Left"
+    		Margin="143,0,0,0"
+    		TextWrapping="Wrap"
+    		Text="{Binding Timestamp}"
+    		VerticalAlignment="Center"
+    		FontSize="40"
+    		Foreground="#F2346172" />
+    </Grid>
+</UserControl>

Source/Sample Project/Tutorials/09 - MVVM/ClockPopup.xaml.cs

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+using System.Windows.Controls;
+
+namespace Samples.Tutorials.MvvmSample
+{
+	/// <summary>
+	/// Interaction logic for ClockPopup.xaml
+	/// </summary>
+	public partial class ClockPopup : UserControl
+	{
+		public ClockPopup()
+		{
+			this.InitializeComponent();
+		}
+	}
+}

Source/Sample Project/Tutorials/09 - MVVM/MvvmSampleViewModel.cs

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+using System;
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Threading;
+
+namespace Samples.Tutorials.MvvmSample
+{
+    public class MvvmSampleViewModel : INotifyPropertyChanged
+    {
+        private DispatcherTimer timer;
+
+        public string Timestamp
+        {
+            get { return DateTime.Now.ToLongTimeString(); }
+        }
+
+
+        public MvvmSampleViewModel()
+        {
+            timer = new DispatcherTimer(TimeSpan.FromSeconds(1), DispatcherPriority.Normal, OnTimerTick, Application.Current.Dispatcher);
+        }
+
+        private void OnTimerTick(object sender, EventArgs e)
+        {
+            //fire a property change event for the timestamp
+            Application.Current.Dispatcher.BeginInvoke(new Action(() => OnPropertyChanged("Timestamp")));
+        }
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected virtual void OnPropertyChanged(string propertyName)
+        {
+            PropertyChangedEventHandler handler = PropertyChanged;
+            if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
+        }
+    }
+}
+    

Source/Sample Project/Tutorials/09 - MVVM/MvvmSampleWindow.xaml

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+<Window x:Class="Samples.Tutorials.MvvmSample.MvvmSampleWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:local="clr-namespace:Samples.Tutorials.MvvmSample"
+        xmlns:tb="http://www.hardcodet.net/taskbar"
+        Title="MvvmSampleWindow"
+        Height="300"
+        Width="300">
+    <Window.DataContext>
+        <local:MvvmSampleViewModel />
+    </Window.DataContext>
+    <Grid>
+
+
+        <!-- 
+            the NotifyIcon automatically derives the DataContext of it's
+            declaring view. Alternatively, you could just assign it manually
+        -->
+        <tb:TaskbarIcon IconSource="/Icons/Inactive.ico"
+                        ToolTipText="{Binding Timestamp}">
+            <tb:TaskbarIcon.TrayPopup >
+                <!-- the popup, here a custom user control, will also get the DataContext of the NotifyIcon -->
+                <local:ClockPopup Opacity="0.8" />
+            </tb:TaskbarIcon.TrayPopup>
+        </tb:TaskbarIcon>
+        
+        
+        
+        <TextBlock TextWrapping="Wrap"
+                   Text="MVVM is quite simple - content of the NotifyIcon derive its DataContext. Sample: Hover over the icon in order to see the bound ToolTipText. Click for a richer Popup that is bound to the same property."
+                   HorizontalAlignment="Left"
+                   VerticalAlignment="Top"
+                   Margin="10,10,10,0" />
+
+
+    </Grid>
+</Window>

Source/Sample Project/Tutorials/09 - MVVM/MvvmSampleWindow.xaml.cs

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+using System.Windows;
+
+namespace Samples.Tutorials.MvvmSample
+{
+    /// <summary>
+    /// Interaction logic for MvvmSampleWindow.xaml
+    /// </summary>
+    public partial class MvvmSampleWindow : Window
+    {
+        public MvvmSampleWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}