Added context menu for show/hide columns in TableEditorScenario

UICatalog/Scenarios/TableEditor.cs

@@ -70,6 +70,7 @@ namespace UICatalog.Scenarios {
 					miAlternatingColors = new MenuItem ("Alternating Colors", "", () => ToggleAlternatingColors()){CheckType = MenuItemCheckStyle.Checked},
 					miCursor = new MenuItem ("Invert Selected Cell First Character", "", () => ToggleInvertSelectedCellFirstCharacter()){Checked = tableView.Style.InvertSelectedCellFirstCharacter,CheckType = MenuItemCheckStyle.Checked},
 					new MenuItem ("_ClearColumnStyles", "", () => ClearColumnStyles()),
+					new MenuItem ("Sho_w All Columns", "", ()=>ShowAllColumns())
 				}),
 				new MenuBarItem ("_Column", new MenuItem [] {
 					new MenuItem ("_Set Max Width", "", SetMaxWidth),
@@ -137,45 +138,80 @@ namespace UICatalog.Scenarios {
 				tableView.ScreenToCell (e.MouseEvent.X, e.MouseEvent.Y, out DataColumn clickedCol);
 
 				if (clickedCol != null) {
+					if (e.MouseEvent.Flags.HasFlag (MouseFlags.Button1Clicked)) {
+						
+						// left click in a header
+						SortColumn (clickedCol);
+					} else if (e.MouseEvent.Flags.HasFlag (MouseFlags.Button3Clicked)) {
 
-					// work out new sort order
-					var sort = tableView.Table.DefaultView.Sort;
-					bool isAsc;
-
-					if(sort?.EndsWith("ASC") ?? false) {
-						sort = $"{clickedCol.ColumnName} DESC";
-						isAsc = false;
-					} else {
-						sort = $"{clickedCol.ColumnName} ASC";
-						isAsc = true;
-					}
-					
-					// set a sort order
-					tableView.Table.DefaultView.Sort = sort;
-					
-					// copy the rows from the view
-					var sortedCopy = tableView.Table.DefaultView.ToTable ();
-					tableView.Table.Rows.Clear ();
-					foreach(DataRow r in sortedCopy.Rows) {
-						tableView.Table.ImportRow (r);
+						// right click in a header
+						ShowHeaderContextMenu (clickedCol, e);
 					}
+				}
+			};
+		}
+
+		private void ShowAllColumns ()
+		{
+			foreach(var colStyle in tableView.Style.ColumnStyles) {
+				colStyle.Value.Visible = true;
+			}
+			tableView.Update ();
+		}
 
-					foreach(DataColumn col in tableView.Table.Columns) {
+		private void SortColumn (DataColumn clickedCol)
+		{
+			// work out new sort order
+			var sort = tableView.Table.DefaultView.Sort;
+			bool isAsc;
 
-						// remove any lingering sort indicator
-						col.ColumnName = col.ColumnName.TrimEnd ('▼', '▲');
+			if (sort?.EndsWith ("ASC") ?? false) {
+				sort = $"{clickedCol.ColumnName} DESC";
+				isAsc = false;
+			} else {
+				sort = $"{clickedCol.ColumnName} ASC";
+				isAsc = true;
+			}
 
-						// add a new one if this the one that is being sorted
-						if (col == clickedCol) {
-							col.ColumnName += isAsc ? '▲': '▼';
-						}
-					}
+			// set a sort order
+			tableView.Table.DefaultView.Sort = sort;
 
-					tableView.Update ();
+			// copy the rows from the view
+			var sortedCopy = tableView.Table.DefaultView.ToTable ();
+			tableView.Table.Rows.Clear ();
+			foreach (DataRow r in sortedCopy.Rows) {
+				tableView.Table.ImportRow (r);
+			}
+
+			foreach (DataColumn col in tableView.Table.Columns) {
+
+				// remove any lingering sort indicator
+				col.ColumnName = col.ColumnName.TrimEnd ('▼', '▲');
+
+				// add a new one if this the one that is being sorted
+				if (col == clickedCol) {
+					col.ColumnName += isAsc ? '▲' : '▼';
 				}
-			};
+			}
+
+			tableView.Update ();
+		}
+		private void ShowHeaderContextMenu (DataColumn clickedCol, View.MouseEventArgs e)
+		{
+			var contextMenu = new ContextMenu (e.MouseEvent.X + 1, e.MouseEvent.Y + 1,
+				new MenuBarItem (new MenuItem [] {
+					new MenuItem ($"Hide '{clickedCol.ColumnName}'", "", () => HideColumn(clickedCol)),
+				})
+			);
+			contextMenu.Show ();
 		}
 
+		private void HideColumn (DataColumn clickedCol)
+		{
+			var style = tableView.Style.GetOrCreateColumnStyle (clickedCol);
+			style.Visible = false;
+			tableView.Update ();
+		}
 
 		private DataColumn GetColumn ()
 		{