fix SD-1833 - Method Insight popup exceeds screen (http://bugtracker.sharpdevelop.net/issue/ViewIssue.aspx?ID=1833&PROJID=4)

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/CodeCompletion/InsightWindow.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.Windows;
+using System.Windows.Controls;
 using ICSharpCode.AvalonEdit.Editing;
 using ICSharpCode.AvalonEdit.Utils;
 
@@ -28,6 +29,12 @@ namespace ICSharpCode.AvalonEdit.CodeCompletion
 		{
 			this.CloseAutomatically = true;
 			AttachEvents();
+			
+			Rect caret = this.TextArea.Caret.CalculateCaretRectangle();
+			Rect workingArea = System.Windows.Forms.Screen.FromPoint(caret.Location.ToSystemDrawing()).WorkingArea.ToWpf();
+			
+			MaxHeight = workingArea.Height;
+			MaxWidth = Math.Min(workingArea.Width, Math.Max(1000, workingArea.Width * 0.6));
 		}
 		
 		/// <summary>
@@ -63,4 +70,19 @@ namespace ICSharpCode.AvalonEdit.CodeCompletion
 			}
 		}
 	}
+	
+	/// <summary>
+	/// TemplateSelector for InsightWindow to replace plain string content by a TextBlock with TextWrapping.
+	/// </summary>
+	internal sealed class InsightWindowTemplateSelector : DataTemplateSelector
+	{
+		/// <inheritdoc/>
+		public override DataTemplate SelectTemplate(object item, DependencyObject container)
+		{
+			if (item is string)
+				return (DataTemplate)((FrameworkElement)container).FindResource("TextBlockTemplate");
+			
+			return null;
+		}
+	}
 }

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/CodeCompletion/InsightWindow.xaml

@@ -2,6 +2,8 @@
 	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 	xmlns:cc="clr-namespace:ICSharpCode.AvalonEdit.CodeCompletion"
 >
+	<cc:InsightWindowTemplateSelector x:Key="templateSelector" />
+	
 	<!-- Template for InsightWindow. Based on the template for ToolTip. -->
 	<Style TargetType="{x:Type cc:InsightWindow}">
 		<Setter Property="SizeToContent" Value="WidthAndHeight" />
@@ -100,10 +102,16 @@
 								<Path Stroke="Black" Fill="Black" Data="M 0,0 L 1,0 L 0.5,0.866 Z" Stretch="UniformToFill" />
 							</Button>
 						</StackPanel>
-						<ContentControl Grid.Row="0" Grid.Column="1"
-						                Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Provider.CurrentHeader}"/>
-						<ContentControl Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2"
-						                Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Provider.CurrentContent}"/>
+						<ContentPresenter Grid.Row="0" Grid.Column="1"
+						                  Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Provider.CurrentHeader}"/>
+						<ContentPresenter Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" ContentTemplateSelector="{StaticResource templateSelector}"
+						                  Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Provider.CurrentContent}">
+							<ContentPresenter.Resources>
+								<DataTemplate x:Key="TextBlockTemplate">
+									<TextBlock TextWrapping="Wrap" Text="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Content}" />
+								</DataTemplate>
+							</ContentPresenter.Resources>
+						</ContentPresenter>
 					</Grid>
 				</ControlTemplate>
 			</Setter.Value>