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679 changed files with 4911 additions and 5402 deletions

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@ -1,226 +0,0 @@
# Remove the line below if you want to inherit .editorconfig settings from higher directories
root = true
# C# files
[*.cs]
#### Core EditorConfig Options ####
# Indentation and spacing
indent_size = 3
indent_style = tab
tab_width = 3
# New line preferences
end_of_line = crlf
insert_final_newline = false
#### .NET Coding Conventions ####
# Organize usings
dotnet_separate_import_directive_groups = false
dotnet_sort_system_directives_first = false
file_header_template = unset
# this. and Me. preferences
dotnet_style_qualification_for_event = false:suggestion
dotnet_style_qualification_for_field = false:suggestion
dotnet_style_qualification_for_method = false:suggestion
dotnet_style_qualification_for_property = false:suggestion
# Language keywords vs BCL types preferences
dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion
dotnet_style_predefined_type_for_member_access = true:suggestion
# Parentheses preferences
dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity:suggestion
dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:suggestion
dotnet_style_parentheses_in_other_operators = never_if_unnecessary:suggestion
dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:suggestion
# Modifier preferences
dotnet_style_require_accessibility_modifiers = for_non_interface_members
# Expression-level preferences
dotnet_style_coalesce_expression = true
dotnet_style_collection_initializer = true
dotnet_style_explicit_tuple_names = true
dotnet_style_namespace_match_folder = true
dotnet_style_null_propagation = true
dotnet_style_object_initializer = true
dotnet_style_operator_placement_when_wrapping = beginning_of_line
dotnet_style_prefer_auto_properties = true:suggestion
dotnet_style_prefer_compound_assignment = true
dotnet_style_prefer_conditional_expression_over_assignment = true:suggestion
dotnet_style_prefer_conditional_expression_over_return = true:suggestion
dotnet_style_prefer_foreach_explicit_cast_in_source = when_strongly_typed
dotnet_style_prefer_inferred_anonymous_type_member_names = true
dotnet_style_prefer_inferred_tuple_names = false
dotnet_style_prefer_is_null_check_over_reference_equality_method = true
dotnet_style_prefer_simplified_boolean_expressions = true
dotnet_style_prefer_simplified_interpolation = true
# Field preferences
dotnet_style_readonly_field = true
# Parameter preferences
dotnet_code_quality_unused_parameters = all
# Suppression preferences
dotnet_remove_unnecessary_suppression_exclusions = 0
# New line preferences
dotnet_style_allow_multiple_blank_lines_experimental = false:suggestion
dotnet_style_allow_statement_immediately_after_block_experimental = false:suggestion
#### C# Coding Conventions ####
# var preferences
csharp_style_var_elsewhere = true:warning
csharp_style_var_for_built_in_types = true:warning
csharp_style_var_when_type_is_apparent = true:warning
# Expression-bodied members
csharp_style_expression_bodied_accessors = when_on_single_line:suggestion
csharp_style_expression_bodied_constructors = when_on_single_line:suggestion
csharp_style_expression_bodied_indexers = when_on_single_line:suggestion
csharp_style_expression_bodied_lambdas = when_on_single_line:suggestion
csharp_style_expression_bodied_local_functions = when_on_single_line:suggestion
csharp_style_expression_bodied_methods = when_on_single_line:suggestion
csharp_style_expression_bodied_operators = when_on_single_line:suggestion
csharp_style_expression_bodied_properties = when_on_single_line:suggestion
# Pattern matching preferences
csharp_style_pattern_matching_over_as_with_null_check = true
csharp_style_pattern_matching_over_is_with_cast_check = true
csharp_style_prefer_extended_property_pattern = true
csharp_style_prefer_not_pattern = true
csharp_style_prefer_pattern_matching = true:suggestion
csharp_style_prefer_switch_expression = true
# Null-checking preferences
csharp_style_conditional_delegate_call = true
# Modifier preferences
csharp_prefer_static_local_function = true
csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async
csharp_style_prefer_readonly_struct = true
# Code-block preferences
csharp_prefer_braces = when_multiline:suggestion
csharp_prefer_simple_using_statement = true
csharp_style_namespace_declarations = file_scoped:warning
csharp_style_prefer_method_group_conversion = true:suggestion
csharp_style_prefer_top_level_statements = false:suggestion
# Expression-level preferences
csharp_prefer_simple_default_expression = true
csharp_style_deconstructed_variable_declaration = true
csharp_style_implicit_object_creation_when_type_is_apparent = true
csharp_style_inlined_variable_declaration = true
csharp_style_prefer_index_operator = true
csharp_style_prefer_local_over_anonymous_function = true
csharp_style_prefer_null_check_over_type_check = true
csharp_style_prefer_range_operator = true
csharp_style_prefer_tuple_swap = true
csharp_style_prefer_utf8_string_literals = true
csharp_style_throw_expression = true
csharp_style_unused_value_assignment_preference = discard_variable
csharp_style_unused_value_expression_statement_preference = discard_variable:suggestion
# 'using' directive preferences
csharp_using_directive_placement = outside_namespace:suggestion
# New line preferences
csharp_style_allow_blank_line_after_colon_in_constructor_initializer_experimental = true:suggestion
csharp_style_allow_blank_lines_between_consecutive_braces_experimental = false:suggestion
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#### C# Formatting Rules ####
# New line preferences
csharp_new_line_before_catch = true
csharp_new_line_before_else = true
csharp_new_line_before_finally = true
csharp_new_line_before_members_in_anonymous_types = true
csharp_new_line_before_members_in_object_initializers = true
csharp_new_line_before_open_brace = all
csharp_new_line_between_query_expression_clauses = true
# Indentation preferences
csharp_indent_block_contents = true
csharp_indent_braces = false
csharp_indent_case_contents = true
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# Space preferences
csharp_space_after_cast = false
csharp_space_after_colon_in_inheritance_clause = true
csharp_space_after_comma = true
csharp_space_after_dot = false
csharp_space_after_keywords_in_control_flow_statements = true
csharp_space_after_semicolon_in_for_statement = true
csharp_space_around_binary_operators = before_and_after
csharp_space_around_declaration_statements = false
csharp_space_before_colon_in_inheritance_clause = true
csharp_space_before_comma = false
csharp_space_before_dot = false
csharp_space_before_open_square_brackets = false
csharp_space_before_semicolon_in_for_statement = false
csharp_space_between_empty_square_brackets = false
csharp_space_between_method_call_empty_parameter_list_parentheses = false
csharp_space_between_method_call_name_and_opening_parenthesis = false
csharp_space_between_method_call_parameter_list_parentheses = false
csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
csharp_space_between_method_declaration_name_and_open_parenthesis = false
csharp_space_between_method_declaration_parameter_list_parentheses = false
csharp_space_between_parentheses = false
csharp_space_between_square_brackets = false
# Wrapping preferences
csharp_preserve_single_line_blocks = true
csharp_preserve_single_line_statements = true
#### Naming styles ####
# Naming rules
dotnet_naming_rule.interface_should_be_begins_with_i.severity = suggestion
dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface
dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i
dotnet_naming_rule.types_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.types_should_be_pascal_case.symbols = types
dotnet_naming_rule.types_should_be_pascal_case.style = pascal_case
dotnet_naming_rule.non_field_members_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.non_field_members_should_be_pascal_case.symbols = non_field_members
dotnet_naming_rule.non_field_members_should_be_pascal_case.style = pascal_case
# Symbol specifications
dotnet_naming_symbols.interface.applicable_kinds = interface
dotnet_naming_symbols.interface.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
dotnet_naming_symbols.interface.required_modifiers =
dotnet_naming_symbols.types.applicable_kinds = class, struct, interface, enum
dotnet_naming_symbols.types.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
dotnet_naming_symbols.types.required_modifiers =
dotnet_naming_symbols.non_field_members.applicable_kinds = property, event, method
dotnet_naming_symbols.non_field_members.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
dotnet_naming_symbols.non_field_members.required_modifiers =
# Naming styles
dotnet_naming_style.pascal_case.required_prefix =
dotnet_naming_style.pascal_case.required_suffix =
dotnet_naming_style.pascal_case.word_separator =
dotnet_naming_style.pascal_case.capitalization = pascal_case
dotnet_naming_style.begins_with_i.required_prefix = I
dotnet_naming_style.begins_with_i.required_suffix =
dotnet_naming_style.begins_with_i.word_separator =
dotnet_naming_style.begins_with_i.capitalization = pascal_case

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@ -5,14 +5,14 @@
<CascadingValue Name="SubscribeToParentForm" Value="false" IsFixed="true">
<div class="@AutocompleteClassList">
<InputControl Label="@Label" Variant="@Variant" HelperText="@HelperText" HelperTextOnFocus="@HelperTextOnFocus" FullWidth="@FullWidth" Margin="@Margin" Class="@ClassList()" Style="@Style"
Error="@HasError" ErrorText="@ErrorText" Disabled="@Disabled" @onclick="@ToggleMenu" Required="@Required" ForId="@FieldId">
Error="@Error" ErrorText="@ErrorText" Disabled="@Disabled" @onclick="@ToggleMenu" Required="@Required" ForId="@FieldId">
<InputContent>
<Input @ref="_elementReference" @key="_elementKey" InputType="InputType.Text"
Class="select-input" Margin="@Margin"
Variant="@Variant"
TextUpdateSuppression="@TextUpdateSuppression"
Value="@Text" DisableUnderLine="@DisableUnderLine"
Disabled="@Disabled" ReadOnly="@ReadOnly" Error="@HasError"
Disabled="@Disabled" ReadOnly="@ReadOnly" Error="@Error"
OnAdornmentClick="@OnAdornmentClick" AdornmentIcon="@CurrentIcon" Adornment="@Adornment" AdornmentColor="@AdornmentColor" IconSize="@IconSize" AdornmentText="@AdornmentText"
Clearable="@Clearable" OnClearButtonClick="@OnClearButtonClick"
@attributes="UserAttributes"

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@ -0,0 +1,696 @@
using Connected.Utilities;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
namespace Connected.Components;
public partial class Autocomplete<T> : InputBase<T>, IDisposable
{
private Func<T, string>? _toStringFunc;
private Task _currentSearchTask;
private CancellationTokenSource _cancellationTokenSrc;
private bool _isOpen;
private Timer _timer;
private T[] _items;
private int _selectedListItemIndex = 0;
private IList<int> _enabledItemIndices = new List<int>();
private int _itemsReturned; //the number of items returned by the search function
int _elementKey = 0;
/// <summary>
/// This boolean will keep track if the clear function is called too keep the set text function to be called.
/// </summary>
private bool _isCleared;
private Input<string> _elementReference;
/// <summary>
/// We need a random id for the year items in the year list so we can scroll to the item safely in every DatePicker.
/// </summary>
private readonly string _componentId = Guid.NewGuid().ToString();
public Autocomplete()
{
Adornment = Adornment.End;
IconSize = Size.Medium;
}
[Inject]
IScrollManager ScrollManager { get; set; }
/// <summary>
/// User class names for the popover, separated by space
/// </summary>
[Parameter]
public string PopoverClass { get; set; }
/// <summary>
/// Set the anchor origin point to determen where the popover will open from.
/// </summary>
[Parameter]
public Origin AnchorOrigin { get; set; } = Origin.BottomCenter;
/// <summary>
/// Sets the transform origin point for the popover.
/// </summary>
[Parameter]
public Origin TransformOrigin { get; set; } = Origin.TopCenter;
/// <summary>
/// If true, compact vertical padding will be applied to all Autocomplete items.
/// </summary>
[Parameter]
public bool Dense { get; set; }
/// <summary>
/// The Open Autocomplete Icon
/// </summary>
[Parameter]
public string OpenIcon { get; set; } = Icons.Material.Filled.ArrowDropDown;
/// <summary>
/// The Close Autocomplete Icon
/// </summary>
[Parameter]
public string CloseIcon { get; set; } = Icons.Material.Filled.ArrowDropUp;
/// <summary>
/// The maximum height of the Autocomplete when it is open.
/// </summary>
[Parameter]
public int MaxHeight { get; set; } = 300;
/// <summary>
/// Defines how values are displayed in the drop-down list
/// </summary>
[Parameter]
public Func<T, string>? ToStringFunc
{
get => _toStringFunc;
set
{
if (_toStringFunc == value)
return;
_toStringFunc = value;
Converter = new Converter<T>
{
SetFunc = _toStringFunc ?? (x => x?.ToString()),
};
}
}
/// <summary>
/// Whether to show the progress indicator.
/// </summary>
[Parameter]
public bool ShowProgressIndicator { get; set; } = false;
/// <summary>
/// The color of the progress indicator.
/// </summary>
[Parameter]
public ThemeColor ProgressIndicatorColor { get; set; } = ThemeColor.Default;
private bool IsLoading => _currentSearchTask is not null && !_currentSearchTask.IsCompleted;
/// <summary>
/// Func that returns a list of items matching the typed text. Provides a cancellation token that
/// is marked as cancelled when the user changes the search text or selects a value from the list.
/// This can be used to cancel expensive asynchronous work occuring within the SearchFunc itself.
/// </summary>
[Parameter]
public Func<string, CancellationToken, Task<IEnumerable<T>>> SearchFuncWithCancel { get; set; }
/// <summary>
/// The SearchFunc returns a list of items matching the typed text
/// </summary>
[Parameter]
public Func<string, Task<IEnumerable<T>>> SearchFunc { get; set; }
/// <summary>
/// Maximum items to display, defaults to 10.
/// A null value will display all items.
/// </summary>
[Parameter]
public int? MaxItems { get; set; } = 10;
/// <summary>
/// Minimum characters to initiate a search
/// </summary>
[Parameter]
public int MinCharacters { get; set; } = 0;
/// <summary>
/// Reset value if user deletes the text
/// </summary>
[Parameter]
public bool ResetValueOnEmptyText { get; set; } = false;
/// <summary>
/// If true, clicking the text field will select (highlight) its contents.
/// </summary>
[Parameter]
public bool SelectOnClick { get; set; } = true;
/// <summary>
/// Debounce interval in milliseconds.
/// </summary>
[Parameter]
public int DebounceInterval { get; set; } = 100;
/// <summary>
/// Optional presentation template for unselected items
/// </summary>
[Parameter]
public RenderFragment<T> ItemTemplate { get; set; }
/// <summary>
/// Optional presentation template for the selected item
/// </summary>
[Parameter]
public RenderFragment<T> ItemSelectedTemplate { get; set; }
/// <summary>
/// Optional presentation template for disabled item
/// </summary>
[Parameter]
public RenderFragment<T> ItemDisabledTemplate { get; set; }
/// <summary>
/// Optional presentation template for when more items were returned from the Search function than the MaxItems limit
/// </summary>
[Parameter]
public RenderFragment MoreItemsTemplate { get; set; }
/// <summary>
/// Optional presentation template for when no items were returned from the Search function
/// </summary>
[Parameter]
public RenderFragment NoItemsTemplate { get; set; }
/// <summary>
/// Optional template for progress indicator
/// </summary>
[Parameter]
public RenderFragment ProgressIndicatorTemplate { get; set; }
/// <summary>
/// Optional template for showing progress indicator inside the popover
/// </summary>
[Parameter]
public RenderFragment ProgressIndicatorInPopoverTemplate { get; set; }
/// <summary>
/// On drop-down close override Text with selected Value. This makes it clear to the user
/// which list value is currently selected and disallows incomplete values in Text.
/// </summary>
[Parameter]
public bool CoerceText { get; set; } = true;
/// <summary>
/// If user input is not found by the search func and CoerceValue is set to true the user input
/// will be applied to the Value which allows to validate it and display an error message.
/// </summary>
[Parameter]
public bool CoerceValue { get; set; }
/// <summary>
/// Function to be invoked when checking whether an item should be disabled or not
/// </summary>
[Parameter]
public Func<T, bool> ItemDisabledFunc { get; set; }
/// <summary>
/// Returns the open state of the drop-down.
/// </summary>
public bool IsOpen
{
get => _isOpen;
// Note: the setter is protected because it was needed by a user who derived his own autocomplete from this class.
// Note: setting IsOpen will not open or close it. Use ToggleMenu() for that.
protected set
{
if (value == _isOpen)
return;
_isOpen = value;
IsOpenChanged.InvokeAsync(_isOpen).AndForget();
}
}
/// <summary>
/// An event triggered when the state of IsOpen has changed
/// </summary>
[Parameter]
public EventCallback<bool> IsOpenChanged { get; set; }
/// <summary>
/// If true, the currently selected item from the drop-down (if it is open) is selected.
/// </summary>
[Parameter]
public bool SelectValueOnTab { get; set; } = false;
/// <summary>
/// Show clear button.
/// </summary>
[Parameter]
public bool Clearable { get; set; } = false;
/// <summary>
/// Button click event for clear button. Called after text and value has been cleared.
/// </summary>
[Parameter]
public EventCallback<MouseEventArgs> OnClearButtonClick { get; set; }
private string CurrentIcon => !string.IsNullOrWhiteSpace(AdornmentIcon) ? AdornmentIcon : _isOpen ? CloseIcon : OpenIcon;
protected string ClassList()
{
return new CssBuilder("select")
.AddClass(Class)
.Build();
}
protected string AutocompleteClassList()
{
return new CssBuilder("select")
.AddClass("autocomplete")
.AddClass("width-full", FullWidth)
.AddClass("autocomplete--with-progress", ShowProgressIndicator && IsLoading)
.Build();
}
protected string CircularProgressClassList()
{
return new CssBuilder("progress-indicator-circular")
.AddClass("progress-indicator-circular--with-adornment", Adornment == Adornment.End)
.Build();
}
public async Task SelectOption(T value)
{
await SetValueAsync(value);
if (_items is not null)
_selectedListItemIndex = Array.IndexOf(_items, value);
var optionText = GetItemString(value);
if (!_isCleared)
await SetTextAsync(optionText, false);
_timer?.Dispose();
IsOpen = false;
BeginValidate();
if (!_isCleared)
_elementReference?.SetText(optionText);
_elementReference?.FocusAsync().AndForget();
StateHasChanged();
}
/// <summary>
/// Toggle the menu (if not disabled or not readonly, and is opened).
/// </summary>
public async Task ToggleMenu()
{
if ((Disabled || ReadOnly) && !IsOpen)
return;
await ChangeMenu(!IsOpen);
}
private async Task ChangeMenu(bool open)
{
if (open)
{
if (SelectOnClick)
await _elementReference.SelectAsync();
await OnSearchAsync();
}
else
{
_timer?.Dispose();
RestoreScrollPosition();
await CoerceTextToValue();
IsOpen = false;
StateHasChanged();
}
}
protected override void OnInitialized()
{
var text = GetItemString(Value);
if (!string.IsNullOrWhiteSpace(text))
Text = text;
}
protected override void OnAfterRender(bool firstRender)
{
_isCleared = false;
base.OnAfterRender(firstRender);
}
protected override Task UpdateTextPropertyAsync(bool updateValue)
{
_timer?.Dispose();
// This keeps the text from being set when clear() was called
if (_isCleared)
return Task.CompletedTask;
return base.UpdateTextPropertyAsync(updateValue);
}
protected override async Task UpdateValuePropertyAsync(bool updateText)
{
_timer?.Dispose();
if (ResetValueOnEmptyText && string.IsNullOrWhiteSpace(Text))
await SetValueAsync(default, updateText);
if (DebounceInterval <= 0)
await OnSearchAsync();
else
_timer = new Timer(OnTimerComplete, null, DebounceInterval, Timeout.Infinite);
}
private void OnTimerComplete(object stateInfo)
{
InvokeAsync(OnSearchAsync);
}
private void CancelToken()
{
try
{
_cancellationTokenSrc?.Cancel();
}
catch
{
}
_cancellationTokenSrc = new CancellationTokenSource();
}
/// <remarks>
/// This async method needs to return a task and be awaited in order for
/// unit tests that trigger this method to work correctly.
/// </remarks>
private async Task OnSearchAsync()
{
if (MinCharacters > 0 && (string.IsNullOrWhiteSpace(Text) || Text.Length < MinCharacters))
{
IsOpen = false;
StateHasChanged();
return;
}
IEnumerable<T> searchedItems = Array.Empty<T>();
CancelToken();
try
{
if (ProgressIndicatorInPopoverTemplate is not null)
IsOpen = true;
var searchTask = SearchFuncWithCancel is not null ? SearchFuncWithCancel(Text, _cancellationTokenSrc.Token) : SearchFunc(Text);
_currentSearchTask = searchTask;
StateHasChanged();
searchedItems = await searchTask ?? Array.Empty<T>();
}
catch (TaskCanceledException)
{
}
catch (OperationCanceledException)
{
}
catch (Exception e)
{
Console.WriteLine($"The search function failed to return results: {e.Message}");
}
_itemsReturned = searchedItems.Count();
if (MaxItems.HasValue)
searchedItems = searchedItems.Take(MaxItems.Value);
_items = searchedItems.ToArray();
_enabledItemIndices = _items.Select((item, idx) => (item, idx)).Where(tuple => ItemDisabledFunc?.Invoke(tuple.item) != true).Select(tuple => tuple.idx).ToList();
_selectedListItemIndex = _enabledItemIndices.Any() ? _enabledItemIndices.First() : -1;
IsOpen = true;
if (_items?.Length == 0)
{
await CoerceValueToText();
StateHasChanged();
return;
}
StateHasChanged();
}
/// <summary>
/// Clears the autocomplete's text
/// </summary>
public async Task Clear()
{
_isCleared = true;
IsOpen = false;
await SetTextAsync(string.Empty, updateValue: false);
await CoerceValueToText();
if (_elementReference is not null)
await _elementReference.SetText(string.Empty);
_timer?.Dispose();
StateHasChanged();
}
protected override async void ResetValue()
{
await Clear();
base.ResetValue();
}
private string GetItemString(T item)
{
if (item is null)
return string.Empty;
try
{
return Converter.Set(item);
}
catch (NullReferenceException) { }
return "null";
}
internal virtual async Task OnInputKeyDown(KeyboardEventArgs args)
{
switch (args.Key)
{
case "Tab":
// NOTE: We need to catch Tab in Keydown because a tab will move focus to the next element and thus
// in OnInputKeyUp we'd never get the tab key
if (!IsOpen)
return;
if (SelectValueOnTab)
await OnEnterKey();
else
IsOpen = false;
break;
}
}
internal virtual async Task OnInputKeyUp(KeyboardEventArgs args)
{
switch (args.Key)
{
case "Enter":
case "NumpadEnter":
if (!IsOpen)
await ToggleMenu();
else
await OnEnterKey();
break;
case "ArrowDown":
if (!IsOpen)
await ToggleMenu();
else
{
var increment = _enabledItemIndices.ElementAtOrDefault(_enabledItemIndices.IndexOf(_selectedListItemIndex) + 1) - _selectedListItemIndex;
await SelectNextItem(increment < 0 ? 1 : increment);
}
break;
case "ArrowUp":
if (args.AltKey)
await ChangeMenu(false);
else if (!IsOpen)
await ToggleMenu();
else
{
var decrement = _selectedListItemIndex - _enabledItemIndices.ElementAtOrDefault(_enabledItemIndices.IndexOf(_selectedListItemIndex) - 1);
await SelectNextItem(-(decrement < 0 ? 1 : decrement));
}
break;
case "Escape":
await ChangeMenu(false);
break;
case "Tab":
await Task.Delay(1);
if (!IsOpen)
return;
if (SelectValueOnTab)
await OnEnterKey();
else
await ToggleMenu();
break;
case "Backspace":
if (args.CtrlKey && args.ShiftKey)
Reset();
break;
}
base.InvokeKeyUp(args);
}
private ValueTask SelectNextItem(int increment)
{
if (increment == 0 || _items is null || !_items.Any() || !_enabledItemIndices.Any())
return ValueTask.CompletedTask;
// if we are at the end, or the beginning we just do an rollover
_selectedListItemIndex = Math.Clamp(value: (10 * _items.Length + _selectedListItemIndex + increment) % _items.Length, min: 0, max: _items.Length - 1);
return ScrollToListItem(_selectedListItemIndex);
}
/// <summary>
/// Scroll to a specific item index in the Autocomplete list of items.
/// </summary>
/// <param name="index">the index to scroll to</param>
public ValueTask ScrollToListItem(int index)
{
var id = GetListItemId(index);
//id of the scrolled element
return ScrollManager.ScrollToListItemAsync(id);
}
/*
* This restores the scroll position after closing the menu and element being 0
*/
private void RestoreScrollPosition()
{
if (_selectedListItemIndex != 0)
return;
ScrollManager.ScrollToListItemAsync(GetListItemId(0));
}
private string GetListItemId(in int index)
{
return $"{_componentId}_item{index}";
}
internal Task OnEnterKey()
{
if (!IsOpen)
return Task.CompletedTask;
if (_items is null || !_items.Any())
return Task.CompletedTask;
if (_selectedListItemIndex >= 0 && _selectedListItemIndex < _items.Length)
return SelectOption(_items[_selectedListItemIndex]);
return Task.CompletedTask;
}
private Task OnInputBlurred(FocusEventArgs args)
{
OnBlur.InvokeAsync(args);
return Task.CompletedTask;
// we should not validate on blur in autocomplete, because the user needs to click out of the input to select a value,
// resulting in a premature validation. thus, don't call base
//base.OnBlurred(args);
}
private Task CoerceTextToValue()
{
if (!CoerceText)
return Task.CompletedTask;
_timer?.Dispose();
var text = Value is null ? null : GetItemString(Value);
/*
* Don't update the value to prevent the popover from opening again after coercion
*/
if (text != Text)
return SetTextAsync(text, updateValue: false);
return Task.CompletedTask;
}
private Task CoerceValueToText()
{
if (!CoerceValue)
return Task.CompletedTask;
_timer?.Dispose();
var value = Converter.Get(Text);
return SetValueAsync(value, updateText: false);
}
protected override void Dispose(bool disposing)
{
_timer?.Dispose();
if (_cancellationTokenSrc is not null)
{
try
{
_cancellationTokenSrc.Dispose();
}
catch { }
}
base.Dispose(disposing);
}
/// <summary>
/// Focus the input in the Autocomplete component.
/// </summary>
public override ValueTask FocusAsync()
{
return _elementReference.FocusAsync();
}
/// <summary>
/// Blur from the input in the Autocomplete component.
/// </summary>
public override ValueTask BlurAsync()
{
return _elementReference.BlurAsync();
}
/// <summary>
/// Select all text within the Autocomplete input.
/// </summary>
public override ValueTask SelectAsync()
{
return _elementReference.SelectAsync();
}
/// <summary>
/// Select all text within the Autocomplete input and aligns its start and end points to the text content of the current input.
/// </summary>
public override ValueTask SelectRangeAsync(int pos1, int pos2)
{
return _elementReference.SelectRangeAsync(pos1, pos2);
}
private async Task OnTextChanged(string text)
{
await TextChanged.InvokeAsync();
if (text is null)
return;
await SetTextAsync(text, true);
}
private async Task ListItemOnClick(T item)
{
await SelectOption(item);
}
}

View File

@ -44,17 +44,17 @@ public class BooleanInput<T> : FormComponent<T, bool?>
/// </summary>
[Parameter] public EventCallback<T> CheckedChanged { get; set; }
protected bool? BoolValue => Converter.Convert(Checked);
protected bool? BoolValue => Converter.Set(Checked);
protected virtual Task OnChange(ChangeEventArgs args)
{
Modified = true;
Touched = true;
return SetBoolValueAsync((bool?)args.Value);
}
protected Task SetBoolValueAsync(bool? value)
{
return SetCheckedAsync(Converter.ConvertBack(value));
return SetCheckedAsync(Converter.Get(value));
}
protected async Task SetCheckedAsync(T value)
@ -74,7 +74,7 @@ public class BooleanInput<T> : FormComponent<T, bool?>
{
var changed = base.SetConverter(value);
if (changed)
SetBoolValueAsync(Converter.Convert(Checked)).AndForget();
SetBoolValueAsync(Converter.Set(Checked)).AndForget();
return changed;
}

View File

@ -139,7 +139,7 @@ public partial class CheckBox<T> : BooleanInput<T>
protected override Task OnChange(ChangeEventArgs args)
{
Modified = true;
Touched = true;
// Apply only when TriState parameter is set to true and T is bool?
if (TriState && typeof(T) == typeof(bool?))

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