feactor: convert editing event handler to Command in ViewModel + change it from double click to simply an edit button

Author: Xiphereal

Desktop/Project/TaskListViewModel.cs

@@ -31,6 +31,12 @@ public TaskListViewModel(
             Tasks.Add(taskCreationViewModel.CreatedTask);
         });
 
+        Edit = new RelayCommand<Task>(taskToEdit =>
+        {
+            var window = new TaskEditing(taskToEdit!);
+            window.ShowDialog();
+        });
+
         Delete = new RelayCommand<Task>(taskToRemove =>
         {
             Tasks.Remove(taskToRemove!);
@@ -40,6 +46,7 @@ public TaskListViewModel(
 
     public ICommand Add { get; }
 
+    public ICommand Edit { get; }
     public ICommand Delete { get; }
 
     public void PopulateTasks()

Desktop/Project/TasksList.xaml

@@ -6,11 +6,6 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              mc:Ignorable="d"
              xmlns:domain="clr-namespace:Desktop.Domain">
-    <UserControl.Resources>
-        <Style TargetType="ListBoxItem">
-            <EventSetter Event="MouseDoubleClick" Handler="Edit" />
-        </Style>
-    </UserControl.Resources>
     <Grid>
         <StackPanel>
             <StackPanel Orientation="Horizontal">
@@ -23,6 +18,9 @@
                     <DataTemplate DataType="{x:Type domain:Task}">
                         <StackPanel Orientation="Horizontal">
                             <TextBlock Text="{Binding Name}" />
+                            <Button Content="Edit"
+                                    Command="{Binding DataContext.Edit, ElementName=Root}"
+                                    CommandParameter="{Binding}" />
                             <Button Content="Delete"
                                     Command="{Binding DataContext.Delete, ElementName=Root}"
                                     CommandParameter="{Binding}" />

Desktop/Project/TasksList.xaml.cs

@@ -1,7 +1,5 @@
 using System.Windows.Controls;
-using System.Windows.Input;
 using Desktop.Tasks;
-using Task = Desktop.Domain.Task;
 
 namespace Desktop.Project;
 
@@ -18,13 +16,4 @@ public TasksList(TaskListViewModel viewModel)
         viewModel.TaskCreationViewCreator = creationViewModel =>
             new TaskCreation(creationViewModel);
     }
-
-    private void Edit(object sender, MouseButtonEventArgs e)
-    {
-        if (sender is not ListBoxItem { DataContext: Task task })
-            return;
-
-        var window = new TaskEditing(task);
-        window.ShowDialog();
-    }
 }

Desktop/Tasks/TaskEditing.xaml.cs

@@ -1,4 +1,5 @@
 using System.Windows;
+using Desktop.Common;
 using Task = Desktop.Domain.Task;
 
 namespace Desktop.Tasks;