Typeahead exposed OnFocus event.

Author: majorimi

src/Majorsoft.Blazor.Components.TestApps.Common/Components/Typeahead.razor

@@ -89,7 +89,8 @@ textarea {
 							AccentColor="@_accentColor" 
 							OnSelectedItemChanged="@(text => SelectedItemChanged(text))"
 							OnDropdownOpen="@(() => WriteEventLog("TypeaheadInput: dropdown opened"))"
-							OnDropdownClose="@(() => WriteEventLog("TypeaheadInput: dropdown closed"))">
+							OnDropdownClose="@(() => WriteEventLog("TypeaheadInput: dropdown closed"))"
+							OnFocus="@(() => WriteEventLog("TypeaheadInput: textbox focused"))">
 			</TypeaheadInput>
 		</div>
 	</div>

src/Majorsoft.Blazor.Components.Typeahead/TypeaheadInput.razor

@@ -11,7 +11,7 @@
 	OnValueChanged="e => OnValueChanged(e)"
 	ForceNotifyByEnter="false"
 	ForceNotifyOnBlur="false"
-	@onkeydown="OnKeyDown" @onfocus="OnFocus"
+	@onkeydown="OnKeyDown" @onfocus="OnFocused"
 	autocomplete="off"
 	@attributes=AdditionalAttributes />
 

src/Majorsoft.Blazor.Components.Typeahead/TypeaheadInput.razor.cs

@@ -179,6 +179,7 @@ private string GetDropdownWidth()
 		[Parameter] public EventCallback<TItem> OnSelectedItemChanged { get; set; }
 		[Parameter] public EventCallback OnDropdownOpen { get; set; }
 		[Parameter] public EventCallback OnDropdownClose { get; set; }
+		[Parameter] public EventCallback<FocusEventArgs> OnFocus { get; set; }
 
 		[Parameter(CaptureUnmatchedValues = true)]
 		public Dictionary<string, object> AdditionalAttributes { get; set; }
@@ -305,14 +306,20 @@ private async Task OnKeyDown(KeyboardEventArgs e)
 				}
 			}
 		}
-		private async Task OnFocus(FocusEventArgs e)
+		private async Task OnFocused(FocusEventArgs e)
 		{
-			WriteDiag($"{nameof(OnFocus)} event: '{e.Type}'.");
+			WriteDiag($"{nameof(OnFocused)} event: '{e.Type}'.");
 			_hasNoResult = false;
 
 			await _clickHandler.RegisterClickBoundariesAsync(_typeahead.InnerElementReference, OnOutsideClick, OnInsideClick);
 
 			await Activate();
+
+			if (OnFocus.HasDelegate)
+			{
+				WriteDiag($"{nameof(OnFocus)} delegate: '{e.Type}'.");
+				await OnFocus.InvokeAsync(e);
+			}
 		}
 		private async Task OnOutsideClick(MouseEventArgs e)
 		{

src/Majorsoft.Blazor.Components.Typeahead/TypeaheadInputText.razor

@@ -11,7 +11,7 @@
 	OnValueChanged="e => OnValueChanged(e)"
 	ForceNotifyByEnter="false"
 	ForceNotifyOnBlur="false"
-	@onkeydown="OnKeyDown" @onfocus="OnFocus"
+	@onkeydown="OnKeyDown" @onfocus="OnFocused"
 	autocomplete="off"
 	@attributes=AdditionalAttributes />
 

src/Majorsoft.Blazor.Components.Typeahead/TypeaheadInputText.razor.cs

@@ -180,6 +180,7 @@ private string GetDropdownWidth()
 		[Parameter] public EventCallback<TItem> OnSelectedItemChanged { get; set; }
 		[Parameter] public EventCallback OnDropdownOpen { get; set; }
 		[Parameter] public EventCallback OnDropdownClose { get; set; }
+		[Parameter] public EventCallback<FocusEventArgs> OnFocus { get; set; }
 
 		[Parameter(CaptureUnmatchedValues = true)]
 		public Dictionary<string, object> AdditionalAttributes { get; set; }
@@ -306,14 +307,20 @@ private async Task OnKeyDown(KeyboardEventArgs e)
 				}
 			}
 		}
-		private async Task OnFocus(FocusEventArgs e)
+		private async Task OnFocused(FocusEventArgs e)
 		{
-			WriteDiag($"{nameof(OnFocus)} event: '{e.Type}'.");
+			WriteDiag($"{nameof(OnFocused)} event: '{e.Type}'.");
 			_hasNoResult = false;
 
 			await _clickHandler.RegisterClickBoundariesAsync(_typeahead.InnerElementReference, OnOutsideClick, OnInsideClick);
 
 			await Activate();
+
+			if (OnFocus.HasDelegate)
+			{
+				WriteDiag($"{nameof(OnFocus)} delegate: '{e.Type}'.");
+				await OnFocus.InvokeAsync(e);
+			}
 		}
 		private async Task OnOutsideClick(MouseEventArgs e)
 		{