Add Progress.HideCompleted

src/Spectre.Console.Tests/Unit/Progress/ProgressTests.cs

@@ -184,5 +184,36 @@ namespace Spectre.Console.Tests.Unit
             // Then
             task.Value.ShouldBe(60);
         }
+
+        [Fact]
+        public void Should_Hide_Completed_Tasks()
+        {
+            // Given
+            var task = default(ProgressTask);
+            var console = new FakeAnsiConsole(ColorSystem.TrueColor, width: 10);
+
+            var progress = new Progress(console)
+                .Columns(new[] { new ProgressBarColumn() })
+                .AutoRefresh(false)
+                .AutoClear(false)
+                .HideCompleted(true);
+
+            // When
+            progress.Start(ctx =>
+            {
+                task = ctx.AddTask("foo");
+                task.Value = task.MaxValue;
+            });
+
+            // Then
+            console.Output
+                .NormalizeLineEndings()
+                .ShouldBe(
+                    "[?25l" + // Hide cursor
+                    " \n" + // top padding
+                    "…\n" + // hidden task
+                    " \n" + // bottom padding
+                    "[?25h"); // show cursor
+        }
     }
 }

src/Spectre.Console/Extensions/Progress/ProgressExtensions.cs

@@ -75,5 +75,25 @@ namespace Spectre.Console
 
             return progress;
         }
+
+        /// <summary>
+        /// Sets whether or not hide completed is enabled.
+        /// If enabled, the task tabled will be removed once it is
+        /// completed.
+        /// </summary>
+        /// <param name="progress">The <see cref="Progress"/> instance.</param>
+        /// <param name="enabled">Whether or not hide completed is enabled.</param>
+        /// <returns>The same instance so that multiple calls can be chained.</returns>
+        public static Progress HideCompleted(this Progress progress, bool enabled)
+        {
+            if (progress is null)
+            {
+                throw new ArgumentNullException(nameof(progress));
+            }
+
+            progress.HideCompleted = enabled;
+
+            return progress;
+        }
     }
 }

src/Spectre.Console/Widgets/Progress/Progress.cs

@@ -25,6 +25,13 @@ namespace Spectre.Console
         /// </summary>
         public bool AutoClear { get; set; }
 
+        /// <summary>
+        /// Gets or sets a value indicating whether or not the task list should
+        /// only include tasks not completed
+        /// Defaults to <c>false</c>.
+        /// </summary>
+        public bool HideCompleted { get; set; }
+
         /// <summary>
         /// Gets or sets the refresh rate if <c>AutoRefresh</c> is enabled.
         /// Defaults to 10 times/second.
@@ -153,7 +160,7 @@ namespace Spectre.Console
             if (interactive)
             {
                 var columns = new List<ProgressColumn>(Columns);
-                return new DefaultProgressRenderer(_console, columns, RefreshRate);
+                return new DefaultProgressRenderer(_console, columns, RefreshRate, HideCompleted);
             }
             else
             {

src/Spectre.Console/Widgets/Progress/Renderers/DefaultProgressRenderer.cs

@@ -14,10 +14,11 @@ namespace Spectre.Console
         private readonly object _lock;
         private readonly Stopwatch _stopwatch;
         private TimeSpan _lastUpdate;
+        private bool _hideCompleted;
 
         public override TimeSpan RefreshRate { get; }
 
-        public DefaultProgressRenderer(IAnsiConsole console, List<ProgressColumn> columns, TimeSpan refreshRate)
+        public DefaultProgressRenderer(IAnsiConsole console, List<ProgressColumn> columns, TimeSpan refreshRate, bool hideCompleted)
         {
             _console = console ?? throw new ArgumentNullException(nameof(console));
             _columns = columns ?? throw new ArgumentNullException(nameof(columns));
@@ -25,6 +26,7 @@ namespace Spectre.Console
             _lock = new object();
             _stopwatch = new Stopwatch();
             _lastUpdate = TimeSpan.Zero;
+            _hideCompleted = hideCompleted;
 
             RefreshRate = refreshRate;
         }
@@ -91,7 +93,7 @@ namespace Spectre.Console
                 }
 
                 // Add rows
-                foreach (var task in context.GetTasks())
+                foreach (var task in context.GetTasks().Where(tsk => !(_hideCompleted && tsk.IsFinished)))
                 {
                     var columns = _columns.Select(column => column.Render(renderContext, task, delta));
                     grid.AddRow(columns.ToArray());