Multiline tooltips working again

src/AvaloniaEdit.Demo/MainWindow.xaml.cs

@@ -114,10 +114,13 @@ namespace AvaloniaEdit.Demo
                 data.Add(new MyCompletionData("Item7"));
                 data.Add(new MyCompletionData("Item8"));
                 data.Add(new MyCompletionData("Item9"));
+                data.Add(new MyCompletionData("Item10"));
+                data.Add(new MyCompletionData("Item11"));
+                data.Add(new MyCompletionData("Item12"));
+                data.Add(new MyCompletionData("Item13"));
+
 
                 _completionWindow.Show();
-                _completionWindow.Height = double.NaN;
-                _completionWindow.VerticalAlignment = Avalonia.Layout.VerticalAlignment.Stretch;
             }
             else if (e.Text == "(")
             {

src/AvaloniaEdit/CodeCompletion/CompletionList.xaml

@@ -21,18 +21,18 @@
         </Setter>
     </Style>
 
-  <Style Selector="ListBoxItem">
-    <Setter Property="Height" Value="20"/>
-    <Setter Property="Margin" Value="0"/>
+  <Style Selector="cc|CompletionList > ListBox">
     <Setter Property="Padding" Value="0"/>
+    
   </Style>
 
-  <Style Selector="ListBox">
-    <Setter Property="Padding" Value="0"/>
+  <Style Selector="cc|CompletionList > ListBox > ListBoxItem">
+    <Setter Property="Padding" Value="4, 0, 0, 0"/>
+    <Setter Property="Height" Value="20"/>
   </Style>
   
     <Style Selector="ContentControl.ToolTip">
-      <Setter Property="Height" Value="22"/>
+      <Setter Property="MinHeight" Value="22"/>
         <Setter Property="BorderThickness"
                 Value="1" />
         <Setter Property="BorderBrush"

src/AvaloniaEdit/CodeCompletion/CompletionWindow.cs

@@ -51,12 +51,12 @@ namespace AvaloniaEdit.CodeCompletion
             CompletionList = new CompletionList();
             // keep height automatic
             CloseAutomatically = true;
-            MaxHeight = 300;
+            MaxHeight = 225;
             Width = 175;
             Content = CompletionList;
             // prevent user from resizing window to 0x0
             MinHeight = 15;
-            MinWidth = 30;
+            MinWidth = 30;          
 
             _toolTipContent = new ContentControl();
             _toolTipContent.Classes.Add("ToolTip");
@@ -120,9 +120,10 @@ namespace AvaloniaEdit.CodeCompletion
                     int scrollIndex = (int)CompletionList.ListBox.Scroll.Offset.Y;
                     int yoffset = index - scrollIndex;
                     if (yoffset < 0) yoffset = 0;
+                    if ((yoffset+1) * 20 > MaxHeight) yoffset--;
                     _toolTip.Offset = new PixelPoint(2, yoffset * 20); //Todo find way to measure item height
 
-                    Console.WriteLine(scrollIndex + " " + index);
+                    Console.WriteLine(CompletionList.ListBox.ScrollViewer.Offset.Y + " " + index);
                 }
                 _toolTip.IsOpen = true;                
             }