Accent color
# OtpInput
## Description
The OTP input is used for MFA procedure of authenticating users by a one-time password.
## Parameters
| Name | Type | Default Value | Description |
| :--- | :--- | :------------ | :---------- |
| AutoFocus | `bool` | false | If true, the first input is auto focused. |
| AutoShift | `bool` | false | Enables auto shifting the indexes while clearing the inputs using Delete or Backspace. |
| Classes | `BitOtpInputClassStyles?` | null | Custom CSS classes for different parts of the BitOtpInput. |
| Label | `string?` | null | Label displayed above the inputs. |
| LabelTemplate | `RenderFragment?` | null | Custom template for the label displayed above the inputs. |
| Length | `int` | 5 | Length of the OTP or number of the inputs. |
| OnFill | `EventCallback<string?>` | | Callback for when all of the inputs are filled. |
| OnFocusIn | `EventCallback<FocusEventArgs>` | | onfocusin event callback for each input. |
| OnFocusOut | `EventCallback<FocusEventArgs>` | | onfocusout event callback for each input. |
| OnInput | `EventCallback<ChangeEventArgs>` | | oninput event callback for each input. |
| OnKeyDown | `EventCallback<KeyboardEventArgs>` | | onkeydown event callback for each input. |
| OnPaste | `EventCallback<ClipboardEventArgs>` | | onpaste event callback for each input. |
| Reversed | `bool` | false | Defines whether to render inputs in the opposite direction. |
| Size | `BitSize?` | null | The size of the inputs. |
| Styles | `BitOtpInputClassStyles?` | null | Custom CSS styles for different parts of the BitOtpInput. |
| Type | `BitInputType?` | null | Type of the inputs. |
| Vertical | `bool` | false | Defines whether to render inputs vertically. |
| DefaultValue | `TValue?` | null | The default value of the input to be used in uncontrolled mode (i.e. when the Value is not bound), typically used alongside the OnChange callback. |
| DisplayName | `string?` | null | Gets or sets the display name for this field. |
| InputHtmlAttributes | `IReadOnlyDictionary<string, object>?` | null | Gets or sets a collection of additional attributes that will be applied to the created element. |
| Name | `string?` | null | Gets or sets the name of the element. Allows access by name from the associated form. |
| NoValidate | `bool` | false | Disables the validation of the input. |
| OnChange | `EventCallback<TValue?>` | | Callback for when the input value changes. |
| ReadOnly | `bool` | false | Makes the input read-only. |
| Required | `bool` | false | Makes the input required. |
| Value | `TValue?` | null | Gets or sets the value of the input. This should be used with two-way binding. |
| AriaLabel | `string?` | null | Gets or sets the accessible label for the component, used by assistive technologies. |
| Class | `string?` | null | Gets or sets the CSS class name(s) to apply to the rendered element. |
| Dir | `BitDir?` | null | Gets or sets the text directionality for the component's content. |
| ForceAnimation | `bool` | false | Gets or sets a value indicating whether the component's animations play at their full duration even when reduced motion is requested. |
| HtmlAttributes | `Dictionary<string, object>` | new Dictionary<string, object>() | Captures additional HTML attributes to be applied to the rendered element, in addition to the component's parameters. |
| Id | `string?` | null | Gets or sets the unique identifier for the component's root element. |
| IsEnabled | `bool` | true | Gets or sets a value indicating whether the component is enabled and can respond to user interaction. |
| Style | `string?` | null | Gets or sets the CSS style string to apply to the rendered element. |
| TabIndex | `string?` | null | Gets or sets the tab order index for the component when navigating with the keyboard. |
| Visibility | `BitVisibility` | BitVisibility.Visible | Gets or sets the visibility state (visible, hidden, or collapsed) of the component. |
## Public Members
| Name | Type | Default Value | Description |
| :--- | :--- | :------------ | :---------- |
| InputElements | `ElementReference[]` | | The ElementReferences to the input elements of the BitOtpInput. |
| FocusAsync | `ValueTask` | | Gives focus to a specific input element of the BitOtpInput. |
| InputElement | `ElementReference` | | The ElementReference of the input element. |
| FocusAsync() | `() => ValueTask` | | Gives focus to the input element. |
| FocusAsync(bool preventScroll) | `(bool preventScroll) => ValueTask` | | Gives focus to the input element. |
| UniqueId | `Guid` | Guid.NewGuid() | Gets the readonly unique identifier for the component's root element, assigned when the component instance is constructed. |
| RootElement | `ElementReference` | | Gets the reference to the root HTML element associated with this component. |
## Enums
### BitSize Enum
| Name | Value | Description |
| :--- | :--- | :---------- |
| Small | 0 | The small size. |
| Medium | 1 | The medium size. |
| Large | 2 | The large size. |
### BitInputType Enum
| Name | Value | Description |
| :--- | :--- | :---------- |
| Text | 0 | The input expects text characters. |
| Password | 1 | The input expects password characters. |
| Number | 2 | The input expects number characters. |
| Email | 3 | The input expects email characters. |
| Tel | 4 | The input expects tel characters. |
| Url | 5 | The input expects url characters. |
### BitVisibility Enum
| Name | Value | Description |
| :--- | :--- | :---------- |
| Visible | 0 | The content of the component is visible. |
| Hidden | 1 | The content of the component is hidden, but the space it takes on the page remains (visibility:hidden). |
| Collapsed | 2 | The component is hidden (display:none). |
### BitDir Enum
| Name | Value | Description |
| :--- | :--- | :---------- |
| Ltr | 0 | Ltr (left to right) is to be used for languages that are written from the left to the right (like English). |
| Rtl | 1 | Rtl (right to left) is to be used for languages that are written from the right to the left (like Arabic). |
| Auto | 2 | Auto lets the user agent decide. It uses a basic algorithm as it parses the characters inside the element until it finds a character with a strong directionality, then applies that directionality to the whole element. |
## Sub Classes
### BitOtpInputClassStyles Properties
| Name | Type | Default Value | Description |
| :--- | :--- | :------------ | :---------- |
| Root | `string?` | null | Custom CSS classes/styles for the root element of the otp input. |
| Label | `string?` | null | Custom CSS classes/styles for the label of the otp input. |
| InputsWrapper | `string?` | null | Custom CSS classes/styles for the wrapper element of the inputs. |
| Input | `string?` | null | Custom CSS classes/styles for each input in otp input. |
| Focused | `string?` | null | Custom CSS classes/styles for the focused input in otp input. |
## Examples
\n**Basic**:
```razor
Custom label
```
\n**Type**:
```razor
Submit
```
```csharp
public class ValidationOtpInputModel
{
[Required(ErrorMessage = "The OTP value is required.")]
[MinLength(6, ErrorMessage = "Minimum length is 6.")]
public string OtpValue { get; set; }
}
private ValidationOtpInputModel validationOtpInputModel = new();
private void HandleValidSubmit() { }
private void HandleInvalidSubmit() { }
```
\n**Size**:
```razor
OnChange value: @onChangeValue
OnFill value: @onFillValue
Focus type: @onFocusInArgs?.Event.Type
Input index: @onFocusInArgs?.Index
Focus type: @onFocusOutArgs?.Event.Type
Input index: @onFocusOutArgs?.Index
Value: @onInputArgs?.Event.Value
Input index: @onInputArgs?.Index
Key & Code: [@onKeyDownArgs?.Event.Key] [@onKeyDownArgs?.Event.Code]
Input index: @onKeyDownArgs?.Index
Focus type: @onPasteArgs?.Event.Type
Input index: @onPasteArgs?.Index
```
```csharp
private string? onChangeValue;
private string? onFillValue;
private (FocusEventArgs Event, int Index)? onFocusInArgs;
private (FocusEventArgs Event, int Index)? onFocusOutArgs;
private (ChangeEventArgs Event, int Index)? onInputArgs;
private (KeyboardEventArgs Event, int Index)? onKeyDownArgs;
private (ClipboardEventArgs Event, int Index)? onPasteArgs;
```
\n**Validation**:
```razor