ShowToast return instance

samples/BlazorServer/Pages/Index.razor

@@ -1,4 +1,5 @@
 @page "/"
+@using Blazored.Toast.Configuration;
 @inject IToastService toastService
 @inject NavigationManager NavigationManager
 
@@ -22,7 +23,7 @@
 
 <h1>Blazored Toasts - Custom Component</h1>
 
-<button class="btn btn-primary" @onclick="@(() => toastService.ShowToast<MyToastComponent>(settings => { settings.Timeout = 5; settings.ShowProgressBar = false; }))">Custom Toast</button>
+<button class="btn btn-primary" @onclick="@(() => toastService.ShowToast<MyToastComponent>(settings => { settings.Timeout = 5; settings.ShowProgressBar = true; }))">Custom Toast</button>
 <button class="btn btn-secondary" @onclick="@(() => toastService.ShowToast<MyToastComponent>(_toastParameters, settings => { settings.Timeout = 5; settings.ShowProgressBar = false; }))">Custom Toast with parameters</button>
 <hr />
 
@@ -41,9 +42,29 @@
 <button class="btn btn-warning" @onclick="ClearQueueWarnings">Clear queued Warning Toasts</button>
 <button class="btn btn-info" @onclick="ClearQueueInfos">Clear queued Info Toasts</button>
 
+<hr />
+<h1>Blazored Toasts - Close toast with instance.Close()</h1>
+<div>
+    <button class="btn btn-primary" @onclick="AddNewToast">Add new toast</button>
+    <button class="btn btn-primary" @onclick="AddNewCustomToast">Add new custom toast</button>
+    @if (toastInstanceList.Any())
+    {
+        @foreach (var item in toastInstanceList.OrderBy(x => x.Key))
+        {
+            <div class="d-flex m-2">
+                <span class="col-3 align-self-center border-bottom">@item.Value.Id</span>
+                <button class="btn btn-danger btn-sm col-1 border-bottom" @onclick="@(() => CloseInstance(item))">Close @item.Key</button>
+            </div>
+        }
+    }
+</div>
+
 @code
 {
     private ToastParameters _toastParameters;
+    private Dictionary<int, IToastInstance> toastInstanceList { get; set; } = new();
+    private int toastNumber;
+
 
     protected override void OnInitialized()
     {
@@ -59,6 +80,34 @@
         toastService.ShowToast(ToastLevel.Info, message);
     }
 
+    private void AddNewToast()
+    {
+        toastNumber++;
+        var instance = toastService.ShowInfo($"#{toastNumber} You can close me from code behind", settings => { settings.DisableTimeout = true; });
+        toastInstanceList.Add(toastNumber, instance);
+
+        InvokeAsync(StateHasChanged);
+    }
+
+    private void AddNewCustomToast()
+    {
+        toastNumber++;
+        var _toastParams = new ToastParameters();
+        _toastParams.Add(nameof(MyToastComponent.Title), $"#{toastNumber} I'm a custom toast component with parameters");
+        var instance = toastService.ShowToast<MyToastComponent>(_toastParams, settings => { settings.DisableTimeout = true; });
+        toastInstanceList.Add(toastNumber, instance);
+
+        InvokeAsync(StateHasChanged);
+    }
+
+    private void CloseInstance(KeyValuePair<int, IToastInstance> item)
+    {
+        item.Value.Close();
+        toastInstanceList.Remove(item.Key);
+
+        InvokeAsync(StateHasChanged);
+    }
+
     private void ClearAll()
         => toastService.ClearAll();
 

src/Blazored.Toast.TestExtensions/InMemoryToast.cs

@@ -1,15 +1,18 @@
-using Blazored.Toast.Services;
+using Blazored.Toast.Configuration;
+using Blazored.Toast.Services;
 using Microsoft.AspNetCore.Components;
 using System;
 
 namespace Blazored.Toast.TestExtensions
 {
-    public class InMemoryToast
+    public class InMemoryToast: IToastInstance
     {
         public Type ToastType { get; set; }
         public ToastLevel ToastLevel { get; }
         public RenderFragment? Message { get; }
 
+        public Guid Id => Guid.NewGuid();
+
         public InMemoryToast(Type toastType, ToastLevel toastLevel, RenderFragment message)
         {
             ToastType = toastType;
@@ -21,5 +24,10 @@ public InMemoryToast(Type toastType)
         {
             ToastType = toastType;
         }
+
+        public void Close()
+        {
+            throw new NotImplementedException();
+        }
     }
 }

src/Blazored.Toast.TestExtensions/InMemoryToastService.cs

@@ -8,56 +8,76 @@ public class InMemoryToastService : IToastService
 {
     private readonly List<InMemoryToast> _toasts = new();
     public IReadOnlyList<InMemoryToast> Toasts => _toasts;
-    
-    public event Action<Type, ToastParameters?, Action<ToastSettings>?>? OnShowComponent;
-    public event Action<ToastLevel, RenderFragment, Action<ToastSettings>?>? OnShow;
+
+    public event Func<Type, ToastParameters?, Action<ToastSettings>?, IToastInstance>? OnShowComponent;
+    public event Func<ToastLevel, RenderFragment, Action<ToastSettings>?, IToastInstance>? OnShow;
     public event Action? OnClearAll;
     public event Action<ToastLevel>? OnClearToasts;
     public event Action? OnClearCustomToasts;
     public event Action? OnClearQueue;
     public event Action<ToastLevel>? OnClearQueueToasts;
 
-    public void ShowToast<TComponent>() where TComponent : IComponent 
-        => _toasts.Add(new InMemoryToast(typeof(TComponent)));
-
-    public void ShowToast<TComponent>(ToastParameters parameters) where TComponent : IComponent 
-        => _toasts.Add(new InMemoryToast(typeof(TComponent)));
-
-    public void ShowToast<TComponent>(Action<ToastSettings>? settings) where TComponent : IComponent 
-        => _toasts.Add(new InMemoryToast(typeof(TComponent)));
-
-    public void ShowToast<TComponent>(ToastParameters parameters, Action<ToastSettings>? settings) where TComponent : IComponent 
-        => _toasts.Add(new InMemoryToast(typeof(TComponent)));
-
-    public void ShowError(string message, Action<ToastSettings>? settings = null)
+    public IToastInstance ShowToast<TComponent>() where TComponent : IComponent
+    {
+        var instance = new InMemoryToast(typeof(TComponent));
+        _toasts.Add(instance);
+        return instance;
+    }
+
+    public IToastInstance ShowToast<TComponent>(ToastParameters parameters) where TComponent : IComponent
+    {
+        var instance = new InMemoryToast(typeof(TComponent));
+        _toasts.Add(instance);
+        return instance;
+    }
+
+    public IToastInstance ShowToast<TComponent>(Action<ToastSettings>? settings) where TComponent : IComponent
+    {
+        var instance = new InMemoryToast(typeof(TComponent));
+        _toasts.Add(instance);
+        return instance;
+    }
+
+    public IToastInstance ShowToast<TComponent>(ToastParameters parameters, Action<ToastSettings>? settings) where TComponent : IComponent
+    {
+        var instance = new InMemoryToast(typeof(TComponent));
+        _toasts.Add(instance);
+        return instance;
+    }
+
+    public IToastInstance ShowError(string message, Action<ToastSettings>? settings = null)
         => ShowToast(ToastLevel.Error, message, settings);
 
-    public void ShowError(RenderFragment message, Action<ToastSettings>? settings = null)
+    public IToastInstance ShowError(RenderFragment message, Action<ToastSettings>? settings = null)
         => ShowToast(ToastLevel.Error, message, settings);
 
-    public void ShowInfo(string message, Action<ToastSettings>? settings = null)
+    public IToastInstance ShowInfo(string message, Action<ToastSettings>? settings = null)
         => ShowToast(ToastLevel.Info, message, settings);
 
-    public void ShowInfo(RenderFragment message, Action<ToastSettings>? settings = null)
+    public IToastInstance ShowInfo(RenderFragment message, Action<ToastSettings>? settings = null)
         => ShowToast(ToastLevel.Info, message, settings);
 
-    public void ShowSuccess(string message, Action<ToastSettings>? settings = null)
+    public IToastInstance ShowSuccess(string message, Action<ToastSettings>? settings = null)
         => ShowToast(ToastLevel.Success, message, settings);
 
-    public void ShowSuccess(RenderFragment message, Action<ToastSettings>? settings = null)
+    public IToastInstance ShowSuccess(RenderFragment message, Action<ToastSettings>? settings = null)
         => ShowToast(ToastLevel.Success, message, settings);
 
-    public void ShowToast(ToastLevel level, string message, Action<ToastSettings>? settings = null)
+    public IToastInstance ShowToast(ToastLevel level, string message, Action<ToastSettings>? settings = null)
         => ShowToast(level, builder => builder.AddContent(0, message), settings);
 
-    public void ShowToast(ToastLevel level, RenderFragment message, Action<ToastSettings>? settings = null)
-        => _toasts.Add(new InMemoryToast(typeof(ToastInstance), level, message));
+    public IToastInstance ShowToast(ToastLevel level, RenderFragment message, Action<ToastSettings>? settings = null)
+    {
+        var instance = new InMemoryToast(typeof(IToastInstance), level, message);
+        _toasts.Add(instance);
+        return instance;
+    }
 
-    public void ShowWarning(string message, Action<ToastSettings>? settings = null)
+    public IToastInstance ShowWarning(string message, Action<ToastSettings>? settings = null)
         => ShowToast(ToastLevel.Warning, message, settings);
 
-    public void ShowWarning(RenderFragment message, Action<ToastSettings>? settings = null)
-        => ShowToast(ToastLevel.Warning, message,  settings);
+    public IToastInstance ShowWarning(RenderFragment message, Action<ToastSettings>? settings = null)
+        => ShowToast(ToastLevel.Warning, message, settings);
 
     public void ClearAll()
            => _toasts.Clear();