Add option to show separator between table rows (#1304)

* Add option to show separator between table rows
* Panels should show header if borders are not shown

Closes #835

src/Spectre.Console/Rendering/Borders/TableBorderPart.cs

@@ -114,4 +114,24 @@ public enum TableBorderPart
     /// The bottom right part of a footer.
     /// </summary>
     FooterBottomRight,
+
+    /// <summary>
+    /// The left part of a row.
+    /// </summary>
+    RowLeft,
+
+    /// <summary>
+    /// The center part of a row.
+    /// </summary>
+    RowCenter,
+
+    /// <summary>
+    /// The separator part of a row.
+    /// </summary>
+    RowSeparator,
+
+    /// <summary>
+    /// The right part of a row.
+    /// </summary>
+    RowRight,
 }

src/Spectre.Console/Rendering/Borders/Tables/Ascii2TableBorder.cs

@@ -32,6 +32,10 @@ public sealed class Ascii2TableBorder : TableBorder
             TableBorderPart.FooterBottom => "-",
             TableBorderPart.FooterBottomSeparator => "+",
             TableBorderPart.FooterBottomRight => "+",
+            TableBorderPart.RowLeft => "|",
+            TableBorderPart.RowCenter => "-",
+            TableBorderPart.RowSeparator => "+",
+            TableBorderPart.RowRight => "|",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/AsciiDoubleHeadTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class AsciiDoubleHeadTableBorder : TableBorder
             TableBorderPart.FooterBottom => "-",
             TableBorderPart.FooterBottomSeparator => "+",
             TableBorderPart.FooterBottomRight => "+",
+            TableBorderPart.RowLeft => "|",
+            TableBorderPart.RowCenter => "-",
+            TableBorderPart.RowSeparator => "+",
+            TableBorderPart.RowRight => "|",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/AsciiTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class AsciiTableBorder : TableBorder
             TableBorderPart.FooterBottom => "-",
             TableBorderPart.FooterBottomSeparator => "-",
             TableBorderPart.FooterBottomRight => "+",
+            TableBorderPart.RowLeft => "|",
+            TableBorderPart.RowCenter => "-",
+            TableBorderPart.RowSeparator => "+",
+            TableBorderPart.RowRight => "|",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/DoubleEdgeTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class DoubleEdgeTableBorder : TableBorder
             TableBorderPart.FooterBottom => "═",
             TableBorderPart.FooterBottomSeparator => "╧",
             TableBorderPart.FooterBottomRight => "╝",
+            TableBorderPart.RowLeft => "╟",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "┼",
+            TableBorderPart.RowRight => "╢",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/DoubleTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class DoubleTableBorder : TableBorder
             TableBorderPart.FooterBottom => "═",
             TableBorderPart.FooterBottomSeparator => "╩",
             TableBorderPart.FooterBottomRight => "╝",
+            TableBorderPart.RowLeft => "╠",
+            TableBorderPart.RowCenter => "═",
+            TableBorderPart.RowSeparator => "╬",
+            TableBorderPart.RowRight => "╣",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/HeavyEdgeTableBorder.cs

@@ -35,6 +35,10 @@ public sealed class HeavyEdgeTableBorder : TableBorder
             TableBorderPart.FooterBottom => "━",
             TableBorderPart.FooterBottomSeparator => "┷",
             TableBorderPart.FooterBottomRight => "┛",
+            TableBorderPart.RowLeft => "┠",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "┼",
+            TableBorderPart.RowRight => "┨",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/HeavyHeadTableBorder.cs

@@ -35,6 +35,10 @@ public sealed class HeavyHeadTableBorder : TableBorder
             TableBorderPart.FooterBottom => "─",
             TableBorderPart.FooterBottomSeparator => "┴",
             TableBorderPart.FooterBottomRight => "┘",
+            TableBorderPart.RowLeft => "├",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "┼",
+            TableBorderPart.RowRight => "┤",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/HeavyTableBorder.cs

@@ -35,6 +35,10 @@ public sealed class HeavyTableBorder : TableBorder
             TableBorderPart.FooterBottom => "━",
             TableBorderPart.FooterBottomSeparator => "┻",
             TableBorderPart.FooterBottomRight => "┛",
+            TableBorderPart.RowLeft => "┣",
+            TableBorderPart.RowCenter => "━",
+            TableBorderPart.RowSeparator => "╋",
+            TableBorderPart.RowRight => "┫",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/HorizontalTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class HorizontalTableBorder : TableBorder
             TableBorderPart.FooterBottom => "─",
             TableBorderPart.FooterBottomSeparator => "─",
             TableBorderPart.FooterBottomRight => "─",
+            TableBorderPart.RowLeft => "─",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "─",
+            TableBorderPart.RowRight => "─",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/MarkdownTableBorder.cs

@@ -5,6 +5,9 @@ namespace Spectre.Console.Rendering;
 /// </summary>
 public sealed class MarkdownTableBorder : TableBorder
 {
+    /// <inheritdoc />
+    public override bool SupportsRowSeparator => false;
+
     /// <inheritdoc/>
     public override string GetPart(TableBorderPart part)
     {
@@ -32,6 +35,10 @@ public sealed class MarkdownTableBorder : TableBorder
             TableBorderPart.FooterBottom => " ",
             TableBorderPart.FooterBottomSeparator => " ",
             TableBorderPart.FooterBottomRight => " ",
+            TableBorderPart.RowLeft => " ",
+            TableBorderPart.RowCenter => " ",
+            TableBorderPart.RowSeparator => " ",
+            TableBorderPart.RowRight => " ",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/MinimalDoubleHeadTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class MinimalDoubleHeadTableBorder : TableBorder
             TableBorderPart.FooterBottom => " ",
             TableBorderPart.FooterBottomSeparator => " ",
             TableBorderPart.FooterBottomRight => " ",
+            TableBorderPart.RowLeft => " ",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "┼",
+            TableBorderPart.RowRight => " ",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/MinimalHeavyHeadTableBorder.cs

@@ -35,6 +35,10 @@ public sealed class MinimalHeavyHeadTableBorder : TableBorder
             TableBorderPart.FooterBottom => " ",
             TableBorderPart.FooterBottomSeparator => " ",
             TableBorderPart.FooterBottomRight => " ",
+            TableBorderPart.RowLeft => " ",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "┼",
+            TableBorderPart.RowRight => " ",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/MinimalTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class MinimalTableBorder : TableBorder
             TableBorderPart.FooterBottom => " ",
             TableBorderPart.FooterBottomSeparator => " ",
             TableBorderPart.FooterBottomRight => " ",
+            TableBorderPart.RowLeft => " ",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "┼",
+            TableBorderPart.RowRight => " ",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/NoTableBorder.cs

@@ -8,6 +8,9 @@ public sealed class NoTableBorder : TableBorder
     /// <inheritdoc/>
     public override bool Visible => false;
 
+    /// <inheritdoc />
+    public override bool SupportsRowSeparator => false;
+
     /// <inheritdoc/>
     public override string GetPart(TableBorderPart part)
     {

src/Spectre.Console/Rendering/Borders/Tables/RoundedTableBorder.cs

@@ -35,6 +35,10 @@ public sealed class RoundedTableBorder : TableBorder
             TableBorderPart.FooterBottom => "─",
             TableBorderPart.FooterBottomSeparator => "┴",
             TableBorderPart.FooterBottomRight => "╯",
+            TableBorderPart.RowLeft => "├",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "┼",
+            TableBorderPart.RowRight => "┤",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/SimpleHeavyTableBorder.cs

@@ -35,6 +35,10 @@ public sealed class SimpleHeavyTableBorder : TableBorder
             TableBorderPart.FooterBottom => " ",
             TableBorderPart.FooterBottomSeparator => " ",
             TableBorderPart.FooterBottomRight => " ",
+            TableBorderPart.RowLeft => "─",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "─",
+            TableBorderPart.RowRight => "─",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/SimpleTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class SimpleTableBorder : TableBorder
             TableBorderPart.FooterBottom => " ",
             TableBorderPart.FooterBottomSeparator => " ",
             TableBorderPart.FooterBottomRight => " ",
+            TableBorderPart.RowLeft => "─",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "─",
+            TableBorderPart.RowRight => "─",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/Borders/Tables/SquareTableBorder.cs

@@ -32,6 +32,10 @@ public sealed class SquareTableBorder : TableBorder
             TableBorderPart.FooterBottom => "─",
             TableBorderPart.FooterBottomSeparator => "┴",
             TableBorderPart.FooterBottomRight => "┘",
+            TableBorderPart.RowLeft => "├",
+            TableBorderPart.RowCenter => "─",
+            TableBorderPart.RowSeparator => "┼",
+            TableBorderPart.RowRight => "┤",
             _ => throw new InvalidOperationException("Unknown border part."),
         };
     }

src/Spectre.Console/Rendering/TablePart.cs

@@ -15,6 +15,11 @@ public enum TablePart
     /// </summary>
     HeaderSeparator,
 
+    /// <summary>
+    /// The separator between the rows.
+    /// </summary>
+    RowSeparator,
+
     /// <summary>
     /// The separator between the footer and the cells.
     /// </summary>