Fixes gui-cs#4151, gui-cs#4152. Remove LineView class and replace all usages with Line (gui-cs#4268)

* Initial plan

* Remove LineView and replace all usages with Line

- Deleted LineViewExample.cs scenario
- Deleted LineViewTests.cs test file
- Replaced LineView with Line in all examples (CollectionNavigatorTester, FileDialogExamples, LineExample, Wizard)
- Replaced LineView with Line in all tests (ViewTests, TileViewTests)
- Changed TileViewLineView to inherit from Line instead of LineView
- Removed LineView.cs file
- Removed LineView category from TileViewNesting scenario

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Remove LineView references from documentation

- Updated Line.cs XML documentation to remove comparison with LineView
- Removed LineView section from views.md documentation

Co-authored-by: tig <585482+tig@users.noreply.github.com>

* Fixes Wizard (gui-cs#4269)

* fixed Wizard

* Made Line use GetAttributeForRole

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: tig <585482+tig@users.noreply.github.com>
Co-authored-by: Tig <tig@users.noreply.github.com>

Author: Copilot

Examples/UICatalog/Scenarios/CollectionNavigatorTester.cs

@@ -129,7 +129,7 @@ public override void Main ()
         _items = new (_items.OrderBy (i => i, StringComparer.OrdinalIgnoreCase));
 
         CreateListView ();
-        var vsep = new LineView (Orientation.Vertical) { X = Pos.Right (_listView), Y = 1, Height = Dim.Fill () };
+        var vsep = new Line { Orientation = Orientation.Vertical, X = Pos.Right (_listView), Y = 1, Height = Dim.Fill () };
         top.Add (vsep);
         CreateTreeView ();
 

Examples/UICatalog/Scenarios/FileDialogExamples.cs

@@ -62,7 +62,7 @@ public override void Main ()
         x = 24;
 
         win.Add (
-                 new LineView (Orientation.Vertical) { X = x++, Y = 1, Height = 4 }
+                 new Line { Orientation = Orientation.Vertical, X = x++, Y = 1, Height = 4 }
                 );
         win.Add (new Label { X = x++, Y = y++, Text = "Caption" });
 
@@ -74,7 +74,7 @@ public override void Main ()
         x = 34;
 
         win.Add (
-                 new LineView (Orientation.Vertical) { X = x++, Y = 1, Height = 4 }
+                 new Line { Orientation = Orientation.Vertical, X = x++, Y = 1, Height = 4 }
                 );
         win.Add (new Label { X = x++, Y = y++, Text = "OpenMode" });
 
@@ -86,7 +86,7 @@ public override void Main ()
         x = 48;
 
         win.Add (
-                 new LineView (Orientation.Vertical) { X = x++, Y = 1, Height = 4 }
+                 new Line { Orientation = Orientation.Vertical, X = x++, Y = 1, Height = 4 }
                 );
         win.Add (new Label { X = x++, Y = y++, Text = "Icons" });
 
@@ -101,7 +101,7 @@ public override void Main ()
         x = 24;
 
         win.Add (
-                 new LineView (Orientation.Vertical) { X = x++, Y = y + 1, Height = 4 }
+                 new Line { Orientation = Orientation.Vertical, X = x++, Y = y + 1, Height = 4 }
                 );
         win.Add (new Label { X = x++, Y = y++, Text = "Allowed" });
 
@@ -113,7 +113,7 @@ public override void Main ()
         x = 45;
 
         win.Add (
-                 new LineView (Orientation.Vertical) { X = x++, Y = y + 1, Height = 4 }
+                 new Line { Orientation = Orientation.Vertical, X = x++, Y = y + 1, Height = 4 }
                 );
         win.Add (new Label { X = x++, Y = y++, Text = "Buttons" });
 

Examples/UICatalog/Scenarios/LineExample.cs

@@ -203,21 +203,6 @@ public override void Main ()
 
         app.Add (framedView);
 
-        // Section 6: Comparison with LineView
-        var comparisonLabel = new Label
-        {
-            X = 35,
-            Y = 15,
-            Text = "Line vs LineView Comparison:"
-        };
-        app.Add (comparisonLabel);
-
-        app.Add (new Label { X = 35, Y = 16, Text = "Line (uses LineCanvas):" });
-        app.Add (new Line { X = 35, Y = 17, Width = 20, Style = LineStyle.Single });
-
-        app.Add (new Label { X = 35, Y = 18, Text = "LineView (direct render):" });
-        app.Add (new LineView { X = 35, Y = 19, Width = 20 });
-
         // Add help text
         var helpLabel = new Label
         {

Examples/UICatalog/Scenarios/LineViewExample.cs

@@ -4,7 +4,6 @@ namespace UICatalog.Scenarios;
 
 [ScenarioMetadata ("Tile View Nesting", "Demonstrates recursive nesting of TileViews")]
 [ScenarioCategory ("Controls")]
-[ScenarioCategory ("LineView")]
 public class TileViewNesting : Scenario
 {
     private CheckBox _cbBorder;

Examples/UICatalog/Scenarios/TileViewNesting.cs

@@ -8,9 +8,8 @@ namespace Terminal.Gui.Views;
 /// <remarks>
 ///     <para>
 ///         <see cref="Line"/> is a <see cref="View"/> that renders a single horizontal or vertical line
-///         using the <see cref="LineCanvas"/> system. Unlike <see cref="LineView"/>, which directly renders
-///         runes, <see cref="Line"/> integrates with the LineCanvas to enable proper box-drawing character
-///         selection and line intersection handling.
+///         using the <see cref="LineCanvas"/> system. <see cref="Line"/> integrates with the LineCanvas
+///         to enable proper box-drawing character selection and line intersection handling.
 ///     </para>
 ///     <para>
 ///         The line's appearance is controlled by the <see cref="Style"/> property, which supports
@@ -232,7 +231,8 @@ protected override bool OnDrawingContent ()
                             pos,
                             length,
                             Orientation,
-                            Style
+                            Style,
+                            GetAttributeForRole(VisualRole.Normal)
                            );
 
         return true;

Terminal.Gui/Views/Line.cs

@@ -780,7 +780,6 @@ private void Setup (Rectangle viewport)
             line.Height = _orientation == Orientation.Vertical
                               ? Dim.Fill ()
                               : 1;
-            line.LineRune = _orientation == Orientation.Vertical ? Glyphs.VLine : Glyphs.HLine;
 
             if (_orientation == Orientation.Vertical)
             {
@@ -864,7 +863,7 @@ internal string GetTrimmedTitle ()
         }
     }
 
-    private class TileViewLineView : LineView
+    private class TileViewLineView : Line
     {
         public Point? moveRuneRenderLocation;
 

Terminal.Gui/Views/LineView.cs

@@ -78,8 +78,8 @@ public Wizard ()
             IsDefault = true
         };
 
-        //// Add a horiz separator
-        var separator = new LineView (Orientation.Horizontal) { Y = Pos.Top (BackButton) - 1 };
+        // Add a horiz separator
+        var separator = new Line { Orientation = Orientation.Horizontal, X = -1, Y = Pos.Top (BackButton) - 1, Length = Dim.Fill (-1) };
 
         base.Add (separator);
         AddButton (BackButton);
@@ -301,7 +301,7 @@ public bool GoBack ()
 
         if (previous is { })
         {
-           return GoToStep (previous);
+            return GoToStep (previous);
         }
 
         return false;

Terminal.Gui/Views/TileView.cs

@@ -338,7 +338,7 @@ public void Test_Nested_Views_With_Height_Equal_To_One ()
 
         top.Add (new Label { Text = "111" });
         v.Add (top);
-        v.Add (new LineView (Orientation.Horizontal) { Y = 1 });
+        v.Add (new Line { Orientation = Orientation.Horizontal, Y = 1 });
         bottom.Add (new Label { Text = "222" });
         v.Add (bottom);