Adds ability to clear all toasts or all toast types

samples/BlazorServer/Pages/Index.razor

@@ -18,6 +18,14 @@
 
 <button class="btn btn-primary" @onclick="@(() => toastService.ShowToast<MyToastComponent>(new ToastInstanceSettings(5, true)))">Custom Toast</button>
 <button class="btn btn-secondary" @onclick="@(() => toastService.ShowToast<MyToastComponent>(_toastParameters, new ToastInstanceSettings(5, true)))">Custom Toast with parameters</button>
+<hr />
+
+<h1>Blazored Toasts - Remove Toasts</h1>
+
+<button class="btn btn-primary" @onclick="ClearAll">Clear All Toasts</button>
+<button class="btn btn-warning" @onclick="ClearWarnings">Clear Warning Toasts</button>
+<button class="btn btn-info" @onclick="ClearInfos">Clear Info Toasts</button>
+<button class="btn btn-secondary" @onclick="ClearCustom">Clear Custom Toasts</button>
 
 @code
 {
@@ -32,7 +40,20 @@
 
     private void OnShowHtml()
     {
-        RenderFragment message =@<text>I'm an <em>INFO</em> message with some <strong>bold</strong> text</text>;
+        RenderFragment message =@<text>I'm an <em>INFO</em> message with some <strong>bold</strong> text</text>
+    ;
         toastService.ShowToast(ToastLevel.Info, message);
     }
+
+    private void ClearAll()
+        => toastService.ClearAll();
+
+    private void ClearWarnings()
+        => toastService.ClearToasts(ToastLevel.Warning);
+
+    private void ClearInfos()
+        => toastService.ClearInfoToasts();
+
+    private void ClearCustom()
+        => toastService.ClearCustomToasts();
 }

samples/BlazorWebAssembly/Pages/Index.razor

@@ -18,6 +18,14 @@
 
 <button class="btn btn-primary" @onclick="@(() => toastService.ShowToast<MyToastComponent>(new ToastInstanceSettings(5, true)))">Custom Toast</button>
 <button class="btn btn-secondary" id="CustomButton" @onclick="@(() => toastService.ShowToast<MyToastComponent>(_toastParameters, new ToastInstanceSettings(5, true)))">Custom Toast with parameters</button>
+<hr />
+
+<h1>Blazored Toasts - Remove Toasts</h1>
+
+<button class="btn btn-primary" @onclick="ClearAll">Clear All Toasts</button>
+<button class="btn btn-warning" @onclick="ClearWarnings">Clear Warning Toasts</button>
+<button class="btn btn-info" @onclick="ClearInfos">Clear Info Toasts</button>
+<button class="btn btn-secondary" @onclick="ClearCustom">Clear Custom Toasts</button>
 
 @code
 {
@@ -32,7 +40,20 @@
 
     private void OnShowHtml()
     {
-        RenderFragment message =@<text>I'm an <em>INFO</em> message with some <strong>bold</strong> text</text>;
+        RenderFragment message =@<text>I'm an <em>INFO</em> message with some <strong>bold</strong> text</text>
+    ;
         toastService.ShowToast(ToastLevel.Info, message);
     }
+
+    private void ClearAll()
+        => toastService.ClearAll();
+
+    private void ClearWarnings()
+        => toastService.ClearToasts(ToastLevel.Warning);
+
+    private void ClearInfos()
+        => toastService.ClearInfoToasts();
+
+    private void ClearCustom()
+        => toastService.ClearCustomToasts();
 }

src/Blazored.Toast.TestExtensions/InMemoryToastService.cs

@@ -13,6 +13,9 @@ public class InMemoryToastService : IToastService
         public event Action<ToastLevel, RenderFragment, string, Action> OnShow;
 
         public event Action<Type, ToastParameters, ToastInstanceSettings> OnShowComponent;
+        public event Action OnClearAll;
+        public event Action<ToastLevel> OnClearToasts;
+        public event Action OnClearCustomToasts;
 
         public void ShowToast<TComponent>() where TComponent : IComponent
         {
@@ -77,5 +80,26 @@ private string GetHeading(ToastLevel level, string heading)
                 _ => throw new InvalidOperationException(),
             };
         }
+
+        public void ClearAll()
+               => toasts.Clear();
+
+        public void ClearToasts(ToastLevel toastLevel)
+                => toasts.RemoveAll(x => x.ToastType == typeof(Configuration.ToastInstance) && x.ToastLevel == toastLevel);
+
+        public void ClearWarningToasts()
+                => toasts.RemoveAll(x => x.ToastType == typeof(Configuration.ToastInstance) && x.ToastLevel == ToastLevel.Warning);
+
+        public void ClearInfoToasts()
+                => toasts.RemoveAll(x => x.ToastType == typeof(Configuration.ToastInstance) && x.ToastLevel == ToastLevel.Info);
+
+        public void ClearSuccessToasts()
+                => toasts.RemoveAll(x => x.ToastType == typeof(Configuration.ToastInstance) && x.ToastLevel == ToastLevel.Success);
+
+        public void ClearErrorToasts()
+                => toasts.RemoveAll(x => x.ToastType == typeof(Configuration.ToastInstance) && x.ToastLevel == ToastLevel.Error);
+
+        public void ClearCustomToasts()
+                => toasts.RemoveAll(x => x.ToastType != typeof(Configuration.ToastInstance));
     }
 }

src/Blazored.Toast/BlazoredToasts.razor.cs

@@ -41,6 +41,9 @@ protected override void OnInitialized()
         {
             ToastService.OnShow += ShowToast;
             ToastService.OnShowComponent += ShowToast;
+            ToastService.OnClearAll += ClearAll;
+            ToastService.OnClearToasts += ClearToasts;
+            ToastService.OnClearCustomToasts += ClearCustomToasts;
 
 
             if (RemoveToastsOnNavigation)
@@ -60,6 +63,8 @@ protected override void OnInitialized()
             }
         }
 
+
+
         public void RemoveToast(Guid toastId)
         {
             InvokeAsync(() =>
@@ -94,19 +99,19 @@ private ToastSettings BuildToastSettings(ToastLevel level, RenderFragment messag
             switch (level)
             {
                 case ToastLevel.Error:
-                    return new ToastSettings(string.IsNullOrWhiteSpace(heading) ? "Error" : heading, message, IconType,
+                    return new ToastSettings(ToastLevel.Error, string.IsNullOrWhiteSpace(heading) ? "Error" : heading, message, IconType,
                         "blazored-toast-error", ErrorClass, ErrorIcon, ShowProgressBar, MaxToastCount, onclick);
 
                 case ToastLevel.Info:
-                    return new ToastSettings(string.IsNullOrWhiteSpace(heading) ? "Info" : heading, message, IconType,
+                    return new ToastSettings(ToastLevel.Info, string.IsNullOrWhiteSpace(heading) ? "Info" : heading, message, IconType,
                         "blazored-toast-info", InfoClass, InfoIcon, ShowProgressBar, MaxToastCount, onclick);
 
                 case ToastLevel.Success:
-                    return new ToastSettings(string.IsNullOrWhiteSpace(heading) ? "Success" : heading, message, IconType,
+                    return new ToastSettings(ToastLevel.Success, string.IsNullOrWhiteSpace(heading) ? "Success" : heading, message, IconType,
                         "blazored-toast-success", SuccessClass, SuccessIcon, ShowProgressBar, MaxToastCount, onclick);
 
                 case ToastLevel.Warning:
-                    return new ToastSettings(string.IsNullOrWhiteSpace(heading) ? "Warning" : heading, message, IconType,
+                    return new ToastSettings(ToastLevel.Warning, string.IsNullOrWhiteSpace(heading) ? "Warning" : heading, message, IconType,
                         "blazored-toast-warning", WarningClass, WarningIcon, ShowProgressBar, MaxToastCount, onclick);
             }
 
@@ -181,5 +186,32 @@ private void ShowToast(Type contentComponent, ToastParameters parameters, ToastI
                 StateHasChanged();
             });
         }
+
+        private void ClearAll()
+        {
+            InvokeAsync(() =>
+            {
+                ToastList.Clear();
+                StateHasChanged();
+            });
+        }
+
+        private void ClearToasts(ToastLevel toastLevel)
+        {
+            InvokeAsync(() =>
+            {
+                ToastList.RemoveAll(x => x.BlazoredToast == null && x.ToastSettings.ToastLevel == toastLevel);
+                StateHasChanged();
+            });
+        }
+
+        private void ClearCustomToasts()
+        {
+            InvokeAsync(() =>
+            {
+                ToastList.RemoveAll(x => x.BlazoredToast is object);
+                StateHasChanged();
+            });
+        }
     }
 }

src/Blazored.Toast/Configuration/ToastSettings.cs

@@ -1,11 +1,13 @@
 using System;
+using Blazored.Toast.Services;
 using Microsoft.AspNetCore.Components;
 
 namespace Blazored.Toast.Configuration
 {
     public class ToastSettings
     {
         public ToastSettings(
+            ToastLevel toastLevel,
             string heading,
             RenderFragment message,
             IconType? iconType,
@@ -16,6 +18,7 @@ public ToastSettings(
             int maxItemsShown,
             Action? onClick)
         {
+            ToastLevel = toastLevel;
             Heading = heading;
             Message = message;
             IconType = iconType;
@@ -31,6 +34,7 @@ public ToastSettings(
             }
         }
 
+        public ToastLevel ToastLevel { get; set; }
         public string Heading { get; set; }
         public RenderFragment Message { get; set; }
         public string BaseClass { get; set; }

src/Blazored.Toast/Services/IToastService.cs

@@ -10,6 +10,21 @@ public interface IToastService
         /// </summary>
         event Action<ToastLevel, RenderFragment, string, Action> OnShow;
 
+        /// <summary>
+        /// A event that will be invoked to clear all toasts
+        /// </summary>
+        event Action OnClearAll;
+
+        /// <summary>
+        /// A event that will be invoked to clear toast of specified level
+        /// </summary>
+        event Action<ToastLevel> OnClearToasts;
+
+        /// <summary>
+        /// A event that will be invoked to clear custom toast components
+        /// </summary>
+        event Action OnClearCustomToasts;
+
         /// <summary>
         /// A event that will be invoked when showing a toast with a custom comonent
         /// </summary>
@@ -110,5 +125,41 @@ public interface IToastService
         /// <param name="parameters">Key/Value collection of parameters to pass to component being displayed</param>
         /// <param name="settings">Key/Settings to pass to component being displayed</param>
         void ShowToast<TComponent>(ToastParameters parameters, ToastInstanceSettings settings) where TComponent : IComponent;
+
+        /// <summary>
+        /// Removes all toasts
+        /// </summary>
+        void ClearAll();
+
+        /// <summary>
+        /// Removes all toasts with a specified <paramref name="toastLevel"/>.
+        /// </summary>
+        void ClearToasts(ToastLevel toastLevel);
+
+        /// <summary>
+        /// Removes all toasts with toast level warning
+        /// </summary>
+        void ClearWarningToasts();
+
+        /// <summary>
+        /// Removes all toasts with toast level Info
+        /// </summary>
+        void ClearInfoToasts();
+
+        /// <summary>
+        /// Removes all toasts with toast level Success
+        /// </summary>
+        void ClearSuccessToasts();
+
+        /// <summary>
+        /// Removes all toasts with toast level Error
+        /// </summary>
+        void ClearErrorToasts();
+
+        /// <summary>
+        /// Removes all custom toast components
+        /// </summary>
+        void ClearCustomToasts();
+
     }
 }