mirror of
https://gitee.com/ant-design-blazor/ant-design-blazor.git
synced 2024-12-14 08:51:27 +08:00
d2e9c4b247
* feat(module: config-provider): support RTL * add rtl for each component * fix rtl for pagination * add rtl for overlay
2110 lines
76 KiB
C#
2110 lines
76 KiB
C#
using AntDesign.Select.Internal;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Text.Json;
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using System.Threading.Tasks;
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using AntDesign.Internal;
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using AntDesign.JsInterop;
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using Microsoft.AspNetCore.Components;
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using Microsoft.AspNetCore.Components.Web;
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using System.Diagnostics.CodeAnalysis;
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#pragma warning disable 1591 // Disable missing XML comment
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#pragma warning disable CA1716 // Disable Select name warning
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#pragma warning disable CA1305 // IFormatProvider warning
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namespace AntDesign
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{
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public partial class Select<TItemValue, TItem> : AntInputComponentBase<TItemValue>
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{
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#region Parameters
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[Parameter] public bool AllowClear { get; set; }
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[Parameter] public bool AutoClearSearchValue { get; set; } = true;
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[Parameter] public bool Bordered { get; set; } = true;
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[Parameter] public Action<string> OnCreateCustomTag { get; set; }
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[Parameter]
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public bool DefaultActiveFirstOption
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{
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get { return _defaultActiveFirstOption; }
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set
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{
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_defaultActiveFirstOption = value;
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if (!_defaultActiveFirstOption)
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{
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_defaultActiveFirstOptionApplied = true;
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}
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}
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}
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[Parameter] public bool Disabled { get; set; }
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[Parameter]
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public string DisabledName
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{
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get => _disabledName;
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set
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{
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_getDisabled = string.IsNullOrWhiteSpace(value) ? null : SelectItemPropertyHelper.CreateGetDisabledFunc<TItem>(value);
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_disabledName = value;
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}
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}
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[Parameter] public Func<RenderFragment, RenderFragment> DropdownRender { get; set; }
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[Parameter] public bool EnableSearch { get; set; }
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[Parameter]
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public string GroupName
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{
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get => _groupName;
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set
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{
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_getGroup = string.IsNullOrWhiteSpace(value) ? null : SelectItemPropertyHelper.CreateGetGroupFunc<TItem>(value);
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_groupName = value;
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}
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}
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[Parameter] public bool HideSelected { get; set; }
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[Parameter] public bool IgnoreItemChanges { get; set; } = true;
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[Parameter] public RenderFragment<TItem> ItemTemplate { get; set; }
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/// <summary>
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/// LabelInValue can only be used if the SelectOption is not created by DataSource.
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/// </summary>
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[Parameter] public bool LabelInValue { get; set; }
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[Parameter]
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public string LabelName
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{
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get => _labelName;
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set
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{
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_getLabel = SelectItemPropertyHelper.CreateGetLabelFunc<TItem>(value);
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if (SelectMode == SelectMode.Tags)
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{
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_setLabel = SelectItemPropertyHelper.CreateSetLabelFunc<TItem>(value);
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}
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_labelName = value;
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}
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}
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[Parameter] public RenderFragment<TItem> LabelTemplate { get; set; }
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[Parameter] public bool Loading { get; set; }
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[Parameter] public string Mode { get; set; } = "default";
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[Parameter] public RenderFragment NotFoundContent { get; set; }
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[Parameter] public Action OnBlur { get; set; }
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[Parameter] public Action OnClearSelected { get; set; }
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/// <summary>
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/// The OnDataSourceChanged event occurs after the DataSource property changes.
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/// </summary>
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/// <remarks>
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/// It does not trigger if a value inside the IEnumerable<TItem> changes.
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/// </remarks>
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[Parameter] public Action OnDataSourceChanged { get; set; }
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[Parameter] public Action<bool> OnDropdownVisibleChange { get; set; }
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[Parameter] public Action OnFocus { get; set; }
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[Parameter] public Action OnMouseEnter { get; set; }
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[Parameter] public Action OnMouseLeave { get; set; }
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[Parameter] public Action<string> OnSearch { get; set; }
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[Parameter] public Action<TItem> OnSelectedItemChanged { get; set; }
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[Parameter] public Action<IEnumerable<TItem>> OnSelectedItemsChanged { get; set; }
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[Parameter] public bool Open { get; set; }
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[Parameter] public string Placeholder { get; set; }
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[Parameter] public string PopupContainerMaxHeight { get; set; } = "256px";
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[Parameter] public string PopupContainerSelector { get; set; } = "body";
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[Parameter] public bool ShowArrowIcon { get; set; } = true;
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[Parameter] public bool ShowSearchIcon { get; set; } = true;
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[Parameter] public SortDirection SortByGroup { get; set; } = SortDirection.None;
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[Parameter] public SortDirection SortByLabel { get; set; } = SortDirection.None;
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[Parameter] public RenderFragment SuffixIcon { get; set; }
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[Parameter] public RenderFragment PrefixIcon { get; set; }
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[Parameter] public char[] TokenSeparators { get; set; }
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[Parameter] public override EventCallback<TItemValue> ValueChanged { get; set; }
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[Parameter]
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public string ValueName
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{
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get => _valueName;
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set
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{
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_getValue = SelectItemPropertyHelper.CreateGetValueFunc<TItem, TItemValue>(value);
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_setValue = SelectItemPropertyHelper.CreateSetValueFunc<TItem, TItemValue>(value);
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_valueName = value;
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}
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}
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[Parameter] public EventCallback<IEnumerable<TItemValue>> ValuesChanged { get; set; }
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/// <summary>
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/// Converts custom tag (a string) to TItemValue type.
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/// </summary>
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[Parameter]
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public Func<string, TItemValue> CustomTagLabelToValue { get; set; } =
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(label) => (TItemValue)TypeDescriptor.GetConverter(typeof(TItemValue)).ConvertFromInvariantString(label);
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[Parameter]
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public IEnumerable<TItem> DataSource
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{
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get => _datasource;
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set
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{
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if (value == null && _datasource == null)
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{
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return;
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}
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if (value == null && _datasource != null)
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{
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if (!_isInitialized)
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{
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_selectedValue = default;
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}
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else
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{
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SelectOptionItems.Clear();
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Value = default;
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_datasource = null;
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OnDataSourceChanged?.Invoke();
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}
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return;
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}
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if (value != null && !value.Any() && SelectOptionItems.Any())
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{
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SelectOptionItems.Clear();
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Value = default;
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_datasource = value;
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OnDataSourceChanged?.Invoke();
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return;
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}
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if (value != null)
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{
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bool hasChanged;
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if (_datasource == null)
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{
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hasChanged = true;
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}
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else
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{
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hasChanged = !value.SequenceEqual(_datasource);
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}
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if (hasChanged)
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{
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OnDataSourceChanged?.Invoke();
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_datasource = value;
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}
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}
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}
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}
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[Parameter]
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public override TItemValue Value
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{
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get => _selectedValue;
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set
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{
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var hasChanged = !EqualityComparer<TItemValue>.Default.Equals(value, _selectedValue);
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if (hasChanged)
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{
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_selectedValue = value;
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if (_isInitialized)
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{
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OnValueChange(value);
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if (Form?.ValidateOnChange == true)
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{
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EditContext?.NotifyFieldChanged(FieldIdentifier);
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}
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}
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}
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}
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}
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[Parameter]
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public TItemValue DefaultValue
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{
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get => _defaultValue;
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set
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{
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var hasChanged = !EqualityComparer<TItemValue>.Default.Equals(value, _defaultValue);
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if (hasChanged)
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{
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_defaultValueIsNotNull = !EqualityComparer<TItemValue>.Default.Equals(value, default);
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_defaultValue = value;
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}
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}
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}
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[Parameter]
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public IEnumerable<TItemValue> Values
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{
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get => _selectedValues;
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set
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{
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if (value != null && _selectedValues != null)
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{
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var hasChanged = !value.SequenceEqual(_selectedValues);
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if (!hasChanged)
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return;
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_selectedValues = value;
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_ = OnValuesChangeAsync(value);
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}
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else if (value != null && _selectedValues == null)
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{
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_selectedValues = value;
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_ = OnValuesChangeAsync(value);
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}
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else if (value == null && _selectedValues != null)
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{
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_selectedValues = default;
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_ = OnValuesChangeAsync(default);
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}
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}
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}
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[Parameter]
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public IEnumerable<TItemValue> DefaultValues
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{
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get => _defaultValues;
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set
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{
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if (value != null && _defaultValues != null)
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{
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var hasChanged = !value.SequenceEqual(_defaultValues);
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if (!hasChanged)
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return;
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_defaultValuesHasItems = value.Any();
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_defaultValues = value;
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}
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else if (value != null && _defaultValues == null)
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{
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_defaultValuesHasItems = value.Any();
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_defaultValues = value;
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}
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else if (value == null && _defaultValues != null)
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{
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_defaultValuesHasItems = false;
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_defaultValues = default;
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}
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}
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}
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[Parameter] public RenderFragment SelectOptions { get; set; }
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#endregion Parameters
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#region Properties
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private const string ClassPrefix = "ant-select";
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private const string DefaultWidth = "width: 100%;";
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/// <summary>
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/// Determines if SelectOptions has any selected items
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/// </summary>
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/// <returns>true if SelectOptions has any selected Items, otherwise false</returns>
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internal bool HasValue
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{
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get => SelectOptionItems.Where(x => x.IsSelected).Any() || (AddedTags?.Any() ?? false);
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}
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/// <summary>
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/// Returns a true/false if the placeholder should be displayed or not.
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/// </summary>
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/// <returns>true if SelectOptions has no values and the searchValue is empty; otherwise false </returns>
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protected bool ShowPlaceholder
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{
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get
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{
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return !HasValue && string.IsNullOrEmpty(_searchValue);
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}
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}
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/// <summary>
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/// Returns the value of EnableSearch parameter
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/// </summary>
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/// <returns>true if search is enabled</returns>
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internal bool IsSearchEnabled
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{
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get => EnableSearch || SelectMode == SelectMode.Tags;
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}
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/// <summary>
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/// Indicates if the GroupName is used. When this value is True, the SelectOptions will be rendered in group mode.
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/// </summary>
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internal bool IsGroupingEnabled
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{
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get => !string.IsNullOrWhiteSpace(GroupName);
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}
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internal ElementReference DropDownRef => _dropDown.GetOverlayComponent().Ref;
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internal SelectMode SelectMode => Mode.ToSelectMode();
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internal bool Focused { get; private set; }
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private string _searchValue = string.Empty;
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private string _dropdownStyle = string.Empty;
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private TItemValue _selectedValue;
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private TItemValue _defaultValue;
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private bool _defaultValueIsNotNull;
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private IEnumerable<TItem> _datasource;
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private IEnumerable<TItemValue> _selectedValues;
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private IEnumerable<TItemValue> _defaultValues;
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private bool _defaultValuesHasItems;
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private bool _isInitialized;
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private bool _defaultValueApplied;
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private bool _defaultActiveFirstOptionApplied;
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private bool _waittingStateChange;
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private bool _isPrimitive;
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internal ElementReference _inputRef;
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protected OverlayTrigger _dropDown;
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protected SelectContent<TItemValue, TItem> _selectContent;
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private bool _isToken;
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private SelectOptionItem<TItemValue, TItem> _activeOption;
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private bool _defaultActiveFirstOption;
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internal HashSet<SelectOptionItem<TItemValue, TItem>> SelectOptionItems { get; } = new HashSet<SelectOptionItem<TItemValue, TItem>>();
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internal List<SelectOptionItem<TItemValue, TItem>> SelectedOptionItems { get; } = new List<SelectOptionItem<TItemValue, TItem>>();
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internal List<SelectOptionItem<TItemValue, TItem>> AddedTags { get; } = new List<SelectOptionItem<TItemValue, TItem>>();
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internal SelectOptionItem<TItemValue, TItem> CustomTagSelectOptionItem { get; set; }
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/// <summary>
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/// Currently active (highlighted) option.
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/// It does not have to be equal to selected option.
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/// </summary>
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internal SelectOptionItem<TItemValue, TItem> ActiveOption
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{
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get { return _activeOption; }
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set
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{
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if (_activeOption != value)
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{
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if (_activeOption != null && _activeOption.IsActive)
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_activeOption.IsActive = false;
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_activeOption = value;
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if (_activeOption != null && !_activeOption.IsActive)
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_activeOption.IsActive = true;
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}
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}
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}
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private string _labelName;
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private Func<TItem, string> _getLabel;
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private Action<TItem, string> _setLabel;
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private string _groupName = string.Empty;
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private Func<TItem, string> _getGroup;
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private string _disabledName;
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private Func<TItem, bool> _getDisabled;
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private string _valueName;
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private Func<TItem, TItemValue> _getValue;
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private Action<TItem, TItemValue> _setValue;
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private bool _disableSubmitFormOnEnter;
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#endregion Properties
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private static bool IsSimpleType(Type type)
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{
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return
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type.IsPrimitive ||
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new Type[] {
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typeof(string),
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typeof(decimal),
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typeof(DateTime),
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typeof(DateTimeOffset),
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typeof(TimeSpan),
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typeof(Guid)
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}.Contains(type) ||
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type.IsEnum ||
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Convert.GetTypeCode(type) != TypeCode.Object ||
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(type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>) && IsSimpleType(type.GetGenericArguments()[0]))
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;
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}
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protected override void OnInitialized()
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{
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SetClassMap();
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if (string.IsNullOrWhiteSpace(Style))
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Style = DefaultWidth;
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if (!_isInitialized)
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_isPrimitive = IsSimpleType(typeof(TItem));
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_isInitialized = true;
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base.OnInitialized();
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}
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protected override async Task OnParametersSetAsync()
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{
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if (SelectOptions == null)
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CreateDeleteSelectOptions();
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await base.OnParametersSetAsync();
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}
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protected override async Task OnAfterRenderAsync(bool firstRender)
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{
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if (firstRender)
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{
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await SetInitialValuesAsync();
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await SetDropdownStyleAsync();
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_defaultValueApplied = !(_defaultValueIsNotNull || _defaultValuesHasItems);
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_defaultActiveFirstOptionApplied = !_defaultActiveFirstOption;
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}
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if (!_defaultValueApplied || !_defaultActiveFirstOptionApplied)
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{
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if (SelectMode == SelectMode.Default)
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{
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if (_defaultValueIsNotNull && !HasValue && SelectOptionItems.Any()
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|| DefaultActiveFirstOption && !HasValue && SelectOptionItems.Any())
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{
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await TrySetDefaultValueAsync();
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}
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}
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else
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{
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if (_defaultValuesHasItems && !HasValue && SelectOptionItems.Any()
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|| DefaultActiveFirstOption && !HasValue && SelectOptionItems.Any())
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{
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await TrySetDefaultValuesAsync();
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}
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}
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}
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if (_isInitialized && SelectOptions == null)
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CreateDeleteSelectOptions();
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if (_waittingStateChange)
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{
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_waittingStateChange = false;
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StateHasChanged();
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}
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await base.OnAfterRenderAsync(firstRender);
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}
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/// <summary>
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/// Create or delete SelectOption when the datasource changed
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/// </summary>
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private void CreateDeleteSelectOptions()
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{
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if (string.IsNullOrWhiteSpace(ValueName)) throw new ArgumentNullException(nameof(ValueName));
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if (string.IsNullOrWhiteSpace(LabelName)) throw new ArgumentNullException(nameof(LabelName));
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if (_datasource == null)
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return;
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Dictionary<TItem, SelectOptionItem<TItemValue, TItem>> dataStoreToSelectOptionItemsMatch = new();
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// Compare items of SelectOptions and the datastore
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if (SelectOptionItems.Any())
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{
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// Delete items from SelectOptions if it is no longer in the datastore
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for (var i = SelectOptionItems.Count - 1; i >= 0; i--)
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{
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var selectOption = SelectOptionItems.ElementAt(i);
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if (!selectOption.IsAddedTag)
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{
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var exists = _datasource.Where(x => x.Equals(selectOption.Item)).FirstOrDefault();
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if (exists is null)
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{
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SelectOptionItems.Remove(selectOption);
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}
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else
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dataStoreToSelectOptionItemsMatch.Add(exists, selectOption);
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}
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}
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}
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foreach (var item in _datasource)
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{
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TItemValue value = _getValue(item);
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var exists = false;
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SelectOptionItem<TItemValue, TItem> selectOption;
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SelectOptionItem<TItemValue, TItem> updateSelectOption = null;
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if (dataStoreToSelectOptionItemsMatch.TryGetValue(item, out selectOption))
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{
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var result = EqualityComparer<TItemValue>.Default.Equals(selectOption.Value, value);
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if (result)
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{
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exists = true;
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updateSelectOption = selectOption;
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}
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}
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var disabled = false;
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var groupName = string.Empty;
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var label = _getLabel(item);
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if (!string.IsNullOrWhiteSpace(DisabledName))
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disabled = _getDisabled(item);
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|
|
if (!string.IsNullOrWhiteSpace(GroupName))
|
|
groupName = _getGroup(item);
|
|
|
|
if (!exists)
|
|
{
|
|
var newItem = new SelectOptionItem<TItemValue, TItem>
|
|
{
|
|
Label = label,
|
|
GroupName = groupName,
|
|
IsDisabled = disabled,
|
|
Item = item,
|
|
Value = value
|
|
};
|
|
|
|
SelectOptionItems.Add(newItem);
|
|
}
|
|
else if (exists && !IgnoreItemChanges)
|
|
{
|
|
updateSelectOption.Label = label;
|
|
updateSelectOption.IsDisabled = disabled;
|
|
updateSelectOption.GroupName = groupName;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sorted list of SelectOptionItems
|
|
/// </summary>
|
|
protected internal IEnumerable<SelectOptionItem<TItemValue, TItem>> SortedSelectOptionItems
|
|
{
|
|
get
|
|
{
|
|
var selectOption = SelectOptionItems;
|
|
|
|
if (SortByGroup == SortDirection.Ascending && SortByLabel == SortDirection.None)
|
|
{
|
|
return selectOption.OrderBy(g => g.GroupName);
|
|
}
|
|
else if (SortByGroup == SortDirection.Descending && SortByLabel == SortDirection.None)
|
|
{
|
|
return selectOption.OrderByDescending(g => g.GroupName);
|
|
}
|
|
else if (SortByGroup == SortDirection.None && SortByLabel == SortDirection.Ascending)
|
|
{
|
|
return selectOption.OrderBy(l => l.Label);
|
|
}
|
|
else if (SortByGroup == SortDirection.None && SortByLabel == SortDirection.Descending)
|
|
{
|
|
return selectOption.OrderByDescending(l => l.Label);
|
|
}
|
|
else if (SortByGroup == SortDirection.Ascending && SortByLabel == SortDirection.Ascending)
|
|
{
|
|
return selectOption.OrderBy(g => g.GroupName).ThenBy(l => l.Label);
|
|
}
|
|
else if (SortByGroup == SortDirection.Ascending && SortByLabel == SortDirection.Descending)
|
|
{
|
|
return selectOption.OrderBy(g => g.GroupName).OrderByDescending(l => l.Label);
|
|
}
|
|
else if (SortByGroup == SortDirection.Descending && SortByLabel == SortDirection.Ascending)
|
|
{
|
|
return selectOption.OrderByDescending(g => g.GroupName).ThenBy(l => l.Label);
|
|
}
|
|
else if (SortByGroup == SortDirection.Descending && SortByLabel == SortDirection.Descending)
|
|
{
|
|
return selectOption.OrderByDescending(g => g.GroupName).OrderByDescending(l => l.Label);
|
|
}
|
|
else if (SelectMode == SelectMode.Tags)
|
|
{
|
|
if (CustomTagSelectOptionItem != null)
|
|
{
|
|
return selectOption.OrderByDescending(g => g.Equals(CustomTagSelectOptionItem));
|
|
}
|
|
return selectOption;
|
|
}
|
|
else
|
|
{
|
|
return selectOption;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the CSS classes to change the visual style
|
|
/// </summary>
|
|
protected void SetClassMap()
|
|
{
|
|
ClassMapper.Clear()
|
|
.Add($"{ClassPrefix}")
|
|
.If($"{ClassPrefix}-open", () => _dropDown?.IsOverlayShow() ?? false)
|
|
.If($"{ClassPrefix}-focused", () => Focused)
|
|
.If($"{ClassPrefix}-single", () => SelectMode == SelectMode.Default)
|
|
.If($"{ClassPrefix}-multiple", () => SelectMode != SelectMode.Default)
|
|
.If($"{ClassPrefix}-sm", () => Size == AntSizeLDSType.Small)
|
|
.If($"{ClassPrefix}-lg", () => Size == AntSizeLDSType.Large)
|
|
.If($"{ClassPrefix}-borderless", () => !Bordered)
|
|
.If($"{ClassPrefix}-show-arrow", () => ShowArrowIcon)
|
|
.If($"{ClassPrefix}-show-search", () => EnableSearch || SelectMode == SelectMode.Tags)
|
|
.If($"{ClassPrefix}-bordered", () => Bordered)
|
|
.If($"{ClassPrefix}-loading", () => Loading)
|
|
.If($"{ClassPrefix}-disabled", () => Disabled)
|
|
.If($"{ClassPrefix}-rtl", () => RTL);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns True if the parameter IsHidden is set to true for all entries in the SelectOptions list
|
|
/// </summary>
|
|
/// <returns>true if all items are set to IsHidden(true)</returns>
|
|
protected bool AllOptionsHidden()
|
|
{
|
|
if (AddedTags.Count > 0)
|
|
return SelectOptionItems.All(x => x.IsHidden) && AddedTags.All(x => x.IsHidden);
|
|
else
|
|
return SelectOptionItems.All(x => x.IsHidden);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the BoundingClientRect of Ref (JSInvoke) and set the min-width and width in px.
|
|
/// </summary>
|
|
protected async Task SetDropdownStyleAsync()
|
|
{
|
|
var domRect = await JsInvokeAsync<DomRect>(JSInteropConstants.GetBoundingClientRect, Ref);
|
|
var width = domRect.width.ToString("0.00", System.Globalization.CultureInfo.InvariantCulture);
|
|
_dropdownStyle = $"min-width: {width}px; width: {width}px;";
|
|
}
|
|
|
|
protected async Task OnOverlayVisibleChangeAsync(bool visible)
|
|
{
|
|
OnDropdownVisibleChange?.Invoke(visible);
|
|
|
|
if (visible)
|
|
{
|
|
await SetDropdownStyleAsync();
|
|
|
|
await SetInputFocusAsync();
|
|
|
|
await ScrollToFirstSelectedItemAsync();
|
|
}
|
|
else
|
|
{
|
|
OnOverlayHide();
|
|
}
|
|
}
|
|
|
|
protected void OnOverlayHide()
|
|
{
|
|
if (!IsSearchEnabled)
|
|
return;
|
|
|
|
if (!AutoClearSearchValue)
|
|
return;
|
|
|
|
if (string.IsNullOrWhiteSpace(_searchValue))
|
|
return;
|
|
|
|
_searchValue = string.Empty;
|
|
|
|
if (SelectMode != SelectMode.Default && HideSelected)
|
|
{
|
|
SelectOptionItems.Where(x => !x.IsSelected && x.IsHidden)
|
|
.ForEach(i => i.IsHidden = false);
|
|
}
|
|
else
|
|
{
|
|
if (CustomTagSelectOptionItem is not null)
|
|
{
|
|
SelectOptionItems.Remove(CustomTagSelectOptionItem);
|
|
CustomTagSelectOptionItem = null;
|
|
}
|
|
SelectOptionItems.Where(x => x.IsHidden)
|
|
.ForEach(i => i.IsHidden = false);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Scrolls to the item via JavaScript.
|
|
/// </summary>
|
|
/// <param name="element"></param>
|
|
/// <returns></returns>
|
|
private async Task ElementScrollIntoViewAsync(ElementReference element)
|
|
{
|
|
await JsInvokeAsync(JSInteropConstants.ElementScrollIntoView, element);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Close the overlay
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
internal async Task CloseAsync()
|
|
{
|
|
await _dropDown.Hide(true);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Called by the Form reset method
|
|
/// </summary>
|
|
internal override void ResetValue()
|
|
{
|
|
_ = ClearSelectedAsync();
|
|
}
|
|
|
|
/// <summary>
|
|
/// The method is called every time if the user select/de-select a item by mouse or keyboard.
|
|
/// Don't change the IsSelected property outside of this function.
|
|
/// </summary>
|
|
protected internal async Task SetValueAsync(SelectOptionItem<TItemValue, TItem> selectOption)
|
|
{
|
|
if (selectOption == null) throw new ArgumentNullException(nameof(selectOption));
|
|
|
|
if (SelectMode == SelectMode.Default)
|
|
{
|
|
if (SelectedOptionItems.Count > 0)
|
|
{
|
|
SelectedOptionItems[0].IsSelected = false;
|
|
SelectedOptionItems[0] = selectOption;
|
|
}
|
|
else
|
|
SelectedOptionItems.Add(selectOption);
|
|
|
|
selectOption.IsSelected = true;
|
|
await ValueChanged.InvokeAsync(selectOption.Value);
|
|
InvokeOnSelectedItemChanged(selectOption);
|
|
}
|
|
else
|
|
{
|
|
selectOption.IsSelected = !selectOption.IsSelected;
|
|
|
|
if (selectOption.IsSelected)
|
|
{
|
|
if (HideSelected && !selectOption.IsHidden)
|
|
selectOption.IsHidden = true;
|
|
|
|
if (IsSearchEnabled && !string.IsNullOrWhiteSpace(_searchValue))
|
|
{
|
|
ClearSearch();
|
|
|
|
await SetInputFocusAsync();
|
|
}
|
|
|
|
if (selectOption.IsAddedTag)
|
|
{
|
|
CustomTagSelectOptionItem = null;
|
|
AddedTags.Add(selectOption);
|
|
SelectOptionItems.Add(selectOption);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (selectOption.IsHidden)
|
|
selectOption.IsHidden = false;
|
|
if (selectOption.IsAddedTag)
|
|
{
|
|
SelectOptionItems.Remove(selectOption);
|
|
SelectedOptionItems.Remove(selectOption);
|
|
if (selectOption.IsAddedTag && SelectOptions != null)
|
|
{
|
|
AddedTags.Remove(selectOption);
|
|
}
|
|
}
|
|
}
|
|
await InvokeValuesChanged(selectOption);
|
|
await UpdateOverlayPositionAsync();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Clears the selectValue(s) property and send the null(default) value back through the two-way binding.
|
|
/// </summary>
|
|
protected async Task ClearSelectedAsync()
|
|
{
|
|
if (SelectMode == SelectMode.Default)
|
|
{
|
|
OnSelectedItemChanged?.Invoke(default);
|
|
await ValueChanged.InvokeAsync(default);
|
|
}
|
|
else
|
|
{
|
|
OnSelectedItemsChanged?.Invoke(default);
|
|
await ValuesChanged.InvokeAsync(default);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// If DefaultActiveFirstItem is True, the first item which is not IsDisabled(True) is set as selected.
|
|
/// If there is no item it falls back to the clear method.
|
|
/// </summary>
|
|
private async Task SetDefaultActiveFirstItemAsync()
|
|
{
|
|
if (SelectOptionItems.Any())
|
|
{
|
|
var firstEnabled = SortedSelectOptionItems.FirstOrDefault(x => !x.IsDisabled);
|
|
|
|
if (firstEnabled != null)
|
|
{
|
|
firstEnabled.IsSelected = true;
|
|
|
|
if (HideSelected)
|
|
firstEnabled.IsHidden = true;
|
|
|
|
if (SelectedOptionItems.Count == 0)
|
|
SelectedOptionItems.Add(firstEnabled);
|
|
else
|
|
SelectedOptionItems[0] = firstEnabled;
|
|
|
|
if (SelectMode == SelectMode.Default)
|
|
{
|
|
await ValueChanged.InvokeAsync(firstEnabled.Value);
|
|
|
|
if (!ValueChanged.HasDelegate)
|
|
await InvokeStateHasChangedAsync();
|
|
}
|
|
else
|
|
{
|
|
await InvokeValuesChanged();
|
|
|
|
if (!ValuesChanged.HasDelegate)
|
|
await InvokeStateHasChangedAsync();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
await ClearSelectedAsync();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
await ClearSelectedAsync();
|
|
}
|
|
_defaultActiveFirstOptionApplied = true;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method invoked by OnAfterRenderAsync if the Value is null(default) and
|
|
/// DefaultValue has a value or DefaultActiveFirstItem is True.
|
|
/// </summary>
|
|
private async Task TrySetDefaultValueAsync()
|
|
{
|
|
if (_defaultValueIsNotNull)
|
|
{
|
|
var result = SelectOptionItems.FirstOrDefault(x => EqualityComparer<TItemValue>.Default.Equals(x.Value, _defaultValue));
|
|
|
|
if (result != null && !result.IsDisabled)
|
|
{
|
|
result.IsSelected = true;
|
|
|
|
if (HideSelected)
|
|
result.IsHidden = true;
|
|
|
|
_waittingStateChange = true;
|
|
if (SelectedOptionItems.Count == 0)
|
|
SelectedOptionItems.Add(result);
|
|
else
|
|
SelectedOptionItems[0] = result;
|
|
await ValueChanged.InvokeAsync(result.Value);
|
|
}
|
|
else
|
|
{
|
|
await SetDefaultActiveFirstItemAsync();
|
|
}
|
|
}
|
|
else if (DefaultActiveFirstOption)
|
|
{
|
|
await SetDefaultActiveFirstItemAsync();
|
|
}
|
|
else
|
|
{
|
|
await ClearSelectedAsync();
|
|
}
|
|
_defaultValueApplied = true;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method invoked by OnAfterRenderAsync if the Value is null(default) and
|
|
/// DefaultValues has a values or DefaultActiveFirstItem is True.
|
|
/// </summary>
|
|
private async Task TrySetDefaultValuesAsync()
|
|
{
|
|
if (_defaultValuesHasItems)
|
|
{
|
|
foreach (var defaultValue in _defaultValues)
|
|
{
|
|
var result = SelectOptionItems.FirstOrDefault(x => EqualityComparer<TItemValue>.Default.Equals(x.Value, defaultValue));
|
|
|
|
if (result != null && !result.IsDisabled)
|
|
{
|
|
result.IsSelected = true;
|
|
|
|
if (HideSelected)
|
|
result.IsHidden = true;
|
|
}
|
|
}
|
|
|
|
var anySelected = SelectOptionItems.Any(x => x.IsSelected);
|
|
|
|
if (!anySelected)
|
|
{
|
|
if (DefaultActiveFirstOption)
|
|
{
|
|
await SetDefaultActiveFirstItemAsync();
|
|
}
|
|
else
|
|
{
|
|
await ClearSelectedAsync();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
_waittingStateChange = true;
|
|
|
|
await InvokeValuesChanged();
|
|
}
|
|
}
|
|
else if (DefaultActiveFirstOption)
|
|
{
|
|
await SetDefaultActiveFirstItemAsync();
|
|
}
|
|
else
|
|
{
|
|
await ClearSelectedAsync();
|
|
}
|
|
_defaultValueApplied = true;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the initial values after initialization, the method should only called once.
|
|
/// </summary>
|
|
private async Task SetInitialValuesAsync()
|
|
{
|
|
SelectedOptionItems.Clear();
|
|
if (SelectMode == SelectMode.Default)
|
|
{
|
|
if (_selectedValue != null)
|
|
{
|
|
var result = SelectOptionItems.FirstOrDefault(x => EqualityComparer<TItemValue>.Default.Equals(x.Value, _selectedValue));
|
|
|
|
if (result != null)
|
|
{
|
|
if (result.IsDisabled)
|
|
{
|
|
await TrySetDefaultValueAsync();
|
|
return;
|
|
}
|
|
|
|
result.IsSelected = true;
|
|
ActiveOption = result;
|
|
if (HideSelected)
|
|
result.IsHidden = true;
|
|
SelectedOptionItems.Add(result);
|
|
OnSelectedItemChanged?.Invoke(result.Item);
|
|
await ValueChanged.InvokeAsync(result.Value);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (_selectedValues != null)
|
|
{
|
|
foreach (var value in _selectedValues)
|
|
{
|
|
var result = SelectOptionItems.FirstOrDefault(c => EqualityComparer<TItemValue>.Default.Equals(c.Value, value));
|
|
|
|
if (result != null && !result.IsDisabled)
|
|
{
|
|
result.IsSelected = true;
|
|
|
|
if (HideSelected)
|
|
result.IsHidden = true;
|
|
}
|
|
}
|
|
|
|
var newSelectedValues = new List<TItemValue>();
|
|
var newSelectedItems = new List<TItem>();
|
|
|
|
SelectOptionItems.Where(x => x.IsSelected)
|
|
.ForEach(i =>
|
|
{
|
|
newSelectedValues.Add(i.Value);
|
|
newSelectedItems.Add(i.Item);
|
|
SelectedOptionItems.Add(i);
|
|
});
|
|
|
|
OnSelectedItemsChanged?.Invoke(newSelectedItems);
|
|
await ValuesChanged.InvokeAsync(newSelectedValues);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Append a label item in tag mode
|
|
/// </summary>
|
|
/// <param name="label"></param>
|
|
private SelectOptionItem<TItemValue, TItem> AppendLabelValue(string label)
|
|
{
|
|
if (string.IsNullOrWhiteSpace(label))
|
|
return default;
|
|
SelectOptionItem<TItemValue, TItem> newItem = CreateSelectOptionItem(label, true);
|
|
SelectOptionItems.Add(newItem);
|
|
return newItem;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates the select option item. Mostly meant to create new tags, that is why IsAddedTag is hardcoded to true.
|
|
/// </summary>
|
|
/// <param name="label">Creation based on passed label</param>
|
|
/// <param name="isActive">if set to <c>true</c> [is active].</param>
|
|
/// <returns></returns>
|
|
private SelectOptionItem<TItemValue, TItem> CreateSelectOptionItem(string label, bool isActive)
|
|
{
|
|
TItemValue value = CustomTagLabelToValue.Invoke(label);
|
|
TItem item;
|
|
if (_isPrimitive)
|
|
{
|
|
item = (TItem)TypeDescriptor.GetConverter(typeof(TItem)).ConvertFromInvariantString(_searchValue);
|
|
}
|
|
else
|
|
{
|
|
item = Activator.CreateInstance<TItem>();
|
|
_setLabel(item, _searchValue);
|
|
_setValue(item, value);
|
|
}
|
|
return new SelectOptionItem<TItemValue, TItem>() { Label = label, Value = value, Item = item, IsActive = isActive, IsSelected = false, IsAddedTag = true };
|
|
}
|
|
|
|
/// <summary>
|
|
/// A separate method to invoke ValuesChanged and OnSelectedItemsChanged to reduce code duplicates.
|
|
/// </summary>
|
|
|
|
protected void InvokeOnSelectedItemChanged(SelectOptionItem<TItemValue, TItem> selectOptionItem = null)
|
|
{
|
|
if (selectOptionItem == null)
|
|
{
|
|
OnSelectedItemsChanged?.Invoke(default);
|
|
}
|
|
else
|
|
{
|
|
if (LabelInValue && SelectOptions != null)
|
|
{
|
|
// Embed the label into the value and return the result as json string.
|
|
var valueLabel = new Select.Internal.ValueLabel<TItemValue>
|
|
{
|
|
Value = selectOptionItem.Value,
|
|
Label = selectOptionItem.Label
|
|
};
|
|
|
|
var json = JsonSerializer.Serialize(valueLabel);
|
|
|
|
OnSelectedItemChanged?.Invoke((TItem)Convert.ChangeType(json, typeof(TItem)));
|
|
}
|
|
else
|
|
{
|
|
OnSelectedItemChanged?.Invoke(selectOptionItem.Item);
|
|
}
|
|
}
|
|
}
|
|
|
|
protected async Task InvokeValuesChanged(SelectOptionItem<TItemValue, TItem> newSelection = null)
|
|
{
|
|
List<TItemValue> newSelectedValues;
|
|
if (newSelection is null || Values is null)
|
|
{
|
|
newSelectedValues = new List<TItemValue>();
|
|
SelectedOptionItems.Clear();
|
|
SelectOptionItems.Where(x => x.IsSelected)
|
|
.ForEach(i =>
|
|
{
|
|
newSelectedValues.Add(i.Value);
|
|
SelectedOptionItems.Add(i);
|
|
});
|
|
}
|
|
else
|
|
{
|
|
newSelectedValues = Values.ToList();
|
|
if (newSelection.IsSelected)
|
|
{
|
|
newSelectedValues.Add(newSelection.Value);
|
|
SelectedOptionItems.Add(newSelection);
|
|
}
|
|
else
|
|
{
|
|
newSelectedValues.Remove(newSelection.Value);
|
|
SelectedOptionItems.Remove(newSelection);
|
|
}
|
|
}
|
|
|
|
if (ValuesChanged.HasDelegate)
|
|
await ValuesChanged.InvokeAsync(newSelectedValues);
|
|
else
|
|
{
|
|
Values = newSelectedValues;
|
|
StateHasChanged();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inform the Overlay to update the position.
|
|
/// </summary>
|
|
internal async Task UpdateOverlayPositionAsync()
|
|
{
|
|
await _dropDown.GetOverlayComponent().UpdatePosition();
|
|
}
|
|
|
|
#region Events
|
|
|
|
/// <summary>
|
|
/// The Method is called every time if the value of the @bind-Value was changed by the two-way binding.
|
|
/// </summary>
|
|
protected override void OnValueChange(TItemValue value)
|
|
{
|
|
if (!_isInitialized) // This is important because otherwise the initial value is overwritten by the EventCallback of ValueChanged and would be NULL.
|
|
return;
|
|
|
|
if (EqualityComparer<TItemValue>.Default.Equals(value, default))
|
|
{
|
|
_ = InvokeAsync(() => OnInputClearClickAsync(new()));
|
|
return;
|
|
}
|
|
|
|
var result = SelectOptionItems.FirstOrDefault(x => EqualityComparer<TItemValue>.Default.Equals(x.Value, value));
|
|
|
|
if (result == null)
|
|
{
|
|
if (!AllowClear)
|
|
_ = TrySetDefaultValueAsync();
|
|
else
|
|
{
|
|
//Reset value if not found - needed if value changed
|
|
//outside of the component
|
|
_ = InvokeAsync(() => OnInputClearClickAsync(new()));
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (result.IsDisabled)
|
|
{
|
|
_ = TrySetDefaultValueAsync();
|
|
|
|
return;
|
|
}
|
|
|
|
result.IsSelected = true;
|
|
|
|
EvaluateValueChangedOutsideComponent(result, value);
|
|
|
|
if (HideSelected)
|
|
result.IsHidden = true;
|
|
|
|
ValueChanged.InvokeAsync(result.Value);
|
|
}
|
|
|
|
/// <summary>
|
|
/// When bind-Value is changed outside of the component, then component
|
|
/// selected items have to be reselected according to new value passed.
|
|
/// </summary>
|
|
/// <param name="optionItem">The option item that has been selected.</param>
|
|
/// <param name="value">The value of the selected option item.</param>
|
|
private void EvaluateValueChangedOutsideComponent(SelectOptionItem<TItemValue, TItem> optionItem, TItemValue value)
|
|
{
|
|
if (ActiveOption != null && !ActiveOption.Value.Equals(value))
|
|
{
|
|
ActiveOption.IsSelected = false;
|
|
ActiveOption = optionItem;
|
|
}
|
|
if (SelectedOptionItems.Count > 0)
|
|
{
|
|
if (!SelectedOptionItems[0].Value.Equals(value))
|
|
{
|
|
SelectedOptionItems[0].IsSelected = false;
|
|
SelectedOptionItems[0] = optionItem;
|
|
}
|
|
}
|
|
else
|
|
SelectedOptionItems.Add(optionItem);
|
|
}
|
|
|
|
/// <summary>
|
|
/// The Method is called every time if the value of the @bind-Values was changed by the two-way binding.
|
|
/// </summary>
|
|
protected async Task OnValuesChangeAsync(IEnumerable<TItemValue> values)
|
|
{
|
|
if (!_isInitialized) // This is important because otherwise the initial value is overwritten by the EventCallback of ValueChanged and would be NULL.
|
|
return;
|
|
|
|
if (!SelectOptionItems.Any())
|
|
return;
|
|
|
|
if (values == null)
|
|
{
|
|
await ValuesChanged.InvokeAsync(default);
|
|
OnSelectedItemsChanged?.Invoke(default);
|
|
return;
|
|
}
|
|
|
|
EvaluateValuesChangedOutsideComponent(values);
|
|
|
|
if (_dropDown.IsOverlayShow())
|
|
{
|
|
//A delay forces a refresh better than StateHasChanged().
|
|
//For example when a tag is added that is causing SelectContent to grow,
|
|
//this Task.Delay will actually allow to reposition the Overlay to match
|
|
//new size of SelectContent.
|
|
await Task.Delay(1);
|
|
await UpdateOverlayPositionAsync();
|
|
}
|
|
|
|
OnSelectedItemsChanged?.Invoke(SelectedOptionItems.Select(s => s.Item));
|
|
await ValuesChanged.InvokeAsync(Values);
|
|
}
|
|
|
|
/// <summary>
|
|
/// When bind-Values is changed outside of the component, then component
|
|
/// selected items have to be reselected according to new values passed.
|
|
/// TODO: (Perf) Consider using hash to identify if the passed values are different from currently selected.
|
|
/// </summary>
|
|
/// <param name="values">The values that need to be selected.</param>
|
|
private void EvaluateValuesChangedOutsideComponent(IEnumerable<TItemValue> values)
|
|
{
|
|
var newSelectedItems = new List<TItem>();
|
|
var deselectList = SelectedOptionItems.ToDictionary(item => item.Value, item => item);
|
|
foreach (var value in values.ToList())
|
|
{
|
|
SelectOptionItem<TItemValue, TItem> result;
|
|
if (SelectMode == SelectMode.Multiple)
|
|
{
|
|
result = SelectOptionItems.FirstOrDefault(x => !x.IsSelected && EqualityComparer<TItemValue>.Default.Equals(x.Value, value));
|
|
if (result != null && !result.IsDisabled)
|
|
{
|
|
result.IsSelected = true;
|
|
SelectedOptionItems.Add(result);
|
|
}
|
|
deselectList.Remove(value);
|
|
}
|
|
else
|
|
{
|
|
result = SelectOptionItems.FirstOrDefault(x => EqualityComparer<TItemValue>.Default.Equals(x.Value, value));
|
|
if (result is null) //tag delivered from outside, needs to be added to the list of options
|
|
{
|
|
result = CreateSelectOptionItem(value.ToString(), true);
|
|
result.IsSelected = true;
|
|
AddedTags.Add(result);
|
|
SelectOptionItems.Add(result);
|
|
SelectedOptionItems.Add(result);
|
|
}
|
|
else if (result != null && !result.IsSelected && !result.IsDisabled)
|
|
{
|
|
result.IsSelected = true;
|
|
SelectedOptionItems.Add(result);
|
|
}
|
|
deselectList.Remove(value);
|
|
}
|
|
}
|
|
if (deselectList.Count > 0)
|
|
{
|
|
foreach (var item in deselectList)
|
|
{
|
|
item.Value.IsSelected = false;
|
|
SelectedOptionItems.Remove(item.Value);
|
|
if (item.Value.IsAddedTag)
|
|
{
|
|
SelectOptionItems.Remove(item.Value);
|
|
AddedTags.Remove(item.Value);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method is called via EventCallBack if the value of the Input element was changed by keyboard
|
|
/// </summary>
|
|
/// <param name="e">Contains the value of the Input element</param>
|
|
protected async void OnInputAsync(ChangeEventArgs e)
|
|
{
|
|
if (e == null) throw new ArgumentNullException(nameof(e));
|
|
|
|
if (!IsSearchEnabled)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (!_dropDown.IsOverlayShow())
|
|
{
|
|
await _dropDown.Show();
|
|
}
|
|
|
|
bool containsToken = false;
|
|
if (_isToken)
|
|
_searchValue = e.Value?.ToString().TrimEnd(TokenSeparators);
|
|
else
|
|
{
|
|
_searchValue = e.Value?.ToString();
|
|
|
|
if (TokenSeparators is not null && TokenSeparators.Length > 0)
|
|
{
|
|
containsToken = TokenSeparators.Any(t => _searchValue.Contains(t));
|
|
}
|
|
}
|
|
|
|
//_inputWidth = string.IsNullOrEmpty(_searchValue) ? InputDefaultWidth : $"{4 + _searchValue.Length * 8}px";
|
|
|
|
if (containsToken)
|
|
{
|
|
await TokenizeSearchedPhrase(_searchValue);
|
|
}
|
|
|
|
if (!string.IsNullOrWhiteSpace(_searchValue))
|
|
{
|
|
FilterOptionItems(_searchValue);
|
|
}
|
|
else
|
|
{
|
|
SelectOptionItems.Where(x => x.IsHidden).ForEach(i => i.IsHidden = false);
|
|
if (SelectMode == SelectMode.Tags && CustomTagSelectOptionItem is not null)
|
|
{
|
|
SelectOptionItems.Remove(CustomTagSelectOptionItem);
|
|
CustomTagSelectOptionItem = null;
|
|
}
|
|
}
|
|
OnSearch?.Invoke(_searchValue);
|
|
}
|
|
|
|
private async Task TokenizeSearchedPhrase(string searchValue)
|
|
{
|
|
Dictionary<string, SelectOptionItem<TItemValue, TItem>> tokenItemMatch = new();
|
|
tokenItemMatch = searchValue.Split(TokenSeparators).Distinct().ToDictionary(
|
|
item => item.Trim(),
|
|
_ => default(SelectOptionItem<TItemValue, TItem>));
|
|
|
|
if (SelectMode == SelectMode.Tags)
|
|
{
|
|
List<SelectOptionItem<TItemValue, TItem>> selectOptionItems;
|
|
if (AddedTags.Count > 0)
|
|
{
|
|
selectOptionItems = SelectOptionItems.ToList();
|
|
selectOptionItems.AddRange(AddedTags);
|
|
}
|
|
else
|
|
selectOptionItems = SelectOptionItems.ToList();
|
|
|
|
foreach (var item in selectOptionItems)
|
|
{
|
|
if (tokenItemMatch.ContainsKey(item.Label))
|
|
{
|
|
await SetValueAsync(item);
|
|
tokenItemMatch[item.Label] = item;
|
|
}
|
|
}
|
|
|
|
foreach (KeyValuePair<string, SelectOptionItem<TItemValue, TItem>> tokenItem in tokenItemMatch)
|
|
{
|
|
if (tokenItem.Value == null)
|
|
{
|
|
tokenItemMatch[tokenItem.Key] = CreateSelectOptionItem(tokenItem.Key, false);
|
|
SelectOptionItems.Add(tokenItemMatch[tokenItem.Key]);
|
|
await SetValueAsync(tokenItemMatch[tokenItem.Key]);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
foreach (var item in SelectOptionItems)
|
|
{
|
|
if (tokenItemMatch.ContainsKey(item.Label))
|
|
{
|
|
await SetValueAsync(item);
|
|
}
|
|
}
|
|
}
|
|
if (_dropDown.IsOverlayShow())
|
|
{
|
|
await CloseAsync();
|
|
}
|
|
await SetInputBlurAsync();
|
|
}
|
|
|
|
private void FilterOptionItems(string searchValue)
|
|
{
|
|
if (SelectMode != SelectMode.Tags)
|
|
{
|
|
bool firstDone = false;
|
|
foreach (var item in SelectOptionItems)
|
|
{
|
|
if (item.Label.Contains(searchValue, StringComparison.InvariantCultureIgnoreCase))
|
|
{
|
|
if (!firstDone)
|
|
{
|
|
item.IsActive = true;
|
|
firstDone = true;
|
|
}
|
|
else if (item.IsActive)
|
|
{
|
|
item.IsActive = false;
|
|
}
|
|
if (item.IsHidden)
|
|
item.IsHidden = false;
|
|
}
|
|
else
|
|
{
|
|
if (!item.IsHidden)
|
|
item.IsHidden = true;
|
|
item.IsActive = false;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
FilterTagsOptionItems(searchValue);
|
|
}
|
|
}
|
|
|
|
private void FilterTagsOptionItems(string searchValue)
|
|
{
|
|
SelectOptionItem<TItemValue, TItem> activeCanditate = null;
|
|
List<SelectOptionItem<TItemValue, TItem>> selectOptionItems;
|
|
if (AddedTags.Count > 0)
|
|
{
|
|
selectOptionItems = SelectOptionItems.ToList();
|
|
selectOptionItems.AddRange(AddedTags);
|
|
}
|
|
else
|
|
selectOptionItems = SelectOptionItems.ToList();
|
|
|
|
foreach (var item in selectOptionItems)
|
|
{
|
|
if (!(CustomTagSelectOptionItem != null && item.Equals(CustomTagSelectOptionItem))) //ignore if analyzing CustomTagSelectOptionItem
|
|
{
|
|
if (item.Label.Contains(searchValue, StringComparison.InvariantCultureIgnoreCase))
|
|
{
|
|
if (item.Label.Equals(searchValue, StringComparison.InvariantCulture))
|
|
{
|
|
activeCanditate = item;
|
|
ActiveOption = item;
|
|
item.IsActive = true;
|
|
if (CustomTagSelectOptionItem != null)
|
|
{
|
|
SelectOptionItems.Remove(CustomTagSelectOptionItem);
|
|
CustomTagSelectOptionItem = null;
|
|
}
|
|
}
|
|
else if (item.IsActive)
|
|
item.IsActive = false;
|
|
if (item.IsHidden)
|
|
item.IsHidden = false;
|
|
}
|
|
else
|
|
{
|
|
if (!item.IsHidden)
|
|
item.IsHidden = true;
|
|
item.IsActive = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (activeCanditate is null)
|
|
{
|
|
//label has to be cast-able to value
|
|
TItemValue value = CustomTagLabelToValue.Invoke(searchValue);
|
|
if (CustomTagSelectOptionItem is null)
|
|
{
|
|
CustomTagSelectOptionItem = CreateSelectOptionItem(searchValue, true);
|
|
SelectOptionItems.Add(CustomTagSelectOptionItem);
|
|
ActiveOption = CustomTagSelectOptionItem;
|
|
}
|
|
else
|
|
{
|
|
CustomTagSelectOptionItem.Label = searchValue;
|
|
CustomTagSelectOptionItem.Value = value;
|
|
if (_isPrimitive)
|
|
{
|
|
CustomTagSelectOptionItem.Item = (TItem)TypeDescriptor.GetConverter(typeof(TItem)).ConvertFromInvariantString(_searchValue);
|
|
}
|
|
else
|
|
{
|
|
_setLabel(CustomTagSelectOptionItem.Item, _searchValue);
|
|
_setValue(CustomTagSelectOptionItem.Item, value);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method is called via EventCallBack if the keyboard key is no longer pressed inside the Input element.
|
|
/// </summary>
|
|
/// <param name="e">Contains the key (combination) which was pressed inside the Input element</param>
|
|
protected async Task OnKeyUpAsync(KeyboardEventArgs e)
|
|
{
|
|
if (e == null) throw new ArgumentNullException(nameof(e));
|
|
|
|
var key = e.Key.ToUpperInvariant();
|
|
var overlayFirstOpen = false;
|
|
|
|
if (_isToken && SelectMode == SelectMode.Tags)
|
|
{
|
|
if (!_dropDown.IsOverlayShow())
|
|
return;
|
|
|
|
if (!SelectOptionItems.Any())
|
|
return;
|
|
|
|
SelectOptionItem<TItemValue, TItem> firstActive;
|
|
if (ActiveOption.IsAddedTag)
|
|
{
|
|
firstActive = SelectOptionItems.FirstOrDefault(x => x.Value.Equals(ActiveOption.Value));
|
|
if (firstActive is null)
|
|
firstActive = ActiveOption;
|
|
}
|
|
else
|
|
firstActive = ActiveOption; // SelectOptionItems.FirstOrDefault(x => x.IsActive);
|
|
|
|
if (AllOptionsHidden() || firstActive is null)
|
|
{
|
|
var newItem = AppendLabelValue(_searchValue);
|
|
|
|
await SetValueAsync(newItem);
|
|
|
|
OnCreateCustomTag?.Invoke(_searchValue);
|
|
}
|
|
else if (firstActive != null && !firstActive.IsDisabled)
|
|
{
|
|
CustomTagSelectOptionItem = null;
|
|
await SetValueAsync(firstActive);
|
|
}
|
|
|
|
ClearSearch();
|
|
|
|
return;
|
|
}
|
|
|
|
if (key == "ENTER")
|
|
{
|
|
if (!_dropDown.IsOverlayShow())
|
|
return;
|
|
|
|
if (!SelectOptionItems.Any())
|
|
return;
|
|
|
|
if (SelectMode == SelectMode.Default)
|
|
{
|
|
var firstActive = SelectOptionItems.FirstOrDefault(x => x.IsActive);
|
|
|
|
if (firstActive != null)
|
|
{
|
|
if (!firstActive.IsDisabled)
|
|
{
|
|
await SetValueAsync(firstActive);
|
|
await CloseAsync();
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (SelectMode == SelectMode.Multiple)
|
|
{
|
|
if (AllOptionsHidden())
|
|
return;
|
|
|
|
var firstActive = SelectOptionItems.FirstOrDefault(x => x.IsActive);
|
|
|
|
if (firstActive != null && !firstActive.IsDisabled)
|
|
{
|
|
await SetValueAsync(firstActive);
|
|
ClearSearch();
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (SelectMode == SelectMode.Tags)
|
|
{
|
|
SelectOptionItem<TItemValue, TItem> firstActive;
|
|
if (ActiveOption.IsAddedTag)
|
|
{
|
|
firstActive = SelectOptionItems.FirstOrDefault(x => x.Value.Equals(ActiveOption.Value));
|
|
if (firstActive is null)
|
|
firstActive = ActiveOption;
|
|
}
|
|
else
|
|
firstActive = ActiveOption;
|
|
|
|
if (AllOptionsHidden() || firstActive is null)
|
|
{
|
|
var newItem = AppendLabelValue(_searchValue);
|
|
await SetValueAsync(newItem);
|
|
OnCreateCustomTag?.Invoke(_searchValue);
|
|
}
|
|
else if (firstActive != null && !firstActive.IsDisabled)
|
|
{
|
|
await SetValueAsync(firstActive);
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (key == "ARROWUP")
|
|
{
|
|
if (!_dropDown.IsOverlayShow() && !Disabled)
|
|
{
|
|
await _dropDown.Show();
|
|
overlayFirstOpen = true;
|
|
}
|
|
|
|
if (!SelectOptionItems.Any())
|
|
return;
|
|
|
|
var sortedSelectOptionItems = SortedSelectOptionItems.ToList();
|
|
|
|
if (overlayFirstOpen)
|
|
{
|
|
// Check if there is a selected item and set it as active
|
|
var currentSelected = sortedSelectOptionItems.FirstOrDefault(x => x.IsSelected);
|
|
|
|
if (currentSelected != null)
|
|
{
|
|
if (currentSelected.IsActive)
|
|
return;
|
|
|
|
sortedSelectOptionItems.Where(x => x.IsActive)
|
|
.ForEach(i => i.IsActive = false);
|
|
|
|
currentSelected.IsActive = true;
|
|
ActiveOption = currentSelected;
|
|
|
|
// ToDo: Sometime the element does not scroll, you have to call the function twice
|
|
await ElementScrollIntoViewAsync(currentSelected.Ref);
|
|
await Task.Delay(1);
|
|
await ElementScrollIntoViewAsync(currentSelected.Ref);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
var firstActive = sortedSelectOptionItems.FirstOrDefault(x => x.IsActive && !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (firstActive == null)
|
|
{
|
|
var firstOption = sortedSelectOptionItems.FirstOrDefault(x => !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (firstOption != null)
|
|
{
|
|
firstOption.IsActive = true;
|
|
ActiveOption = firstOption;
|
|
|
|
await ElementScrollIntoViewAsync(firstOption.Ref);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
var possibilityCount = sortedSelectOptionItems.Where(x => !x.IsHidden && !x.IsDisabled).Count();
|
|
|
|
if (possibilityCount == 1) // Do nothing if there is only one choice
|
|
return;
|
|
|
|
var index = sortedSelectOptionItems.FindIndex(x => EqualityComparer<TItemValue>.Default.Equals(x.Value, firstActive.Value));
|
|
|
|
index--;
|
|
|
|
int nextIndex;
|
|
|
|
if (index == -1)
|
|
{
|
|
nextIndex = sortedSelectOptionItems.FindLastIndex(x => !x.IsHidden && !x.IsDisabled);
|
|
}
|
|
else
|
|
{
|
|
nextIndex = sortedSelectOptionItems.FindIndex(index, x => !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (nextIndex != index)
|
|
{
|
|
for (var i = index; i >= -1; i--)
|
|
{
|
|
if (i < 0)
|
|
{
|
|
nextIndex = sortedSelectOptionItems.FindLastIndex(x => !x.IsHidden && !x.IsDisabled);
|
|
break;
|
|
}
|
|
|
|
if (!sortedSelectOptionItems[i].IsHidden && !sortedSelectOptionItems[i].IsDisabled)
|
|
{
|
|
nextIndex = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nextIndex == -1)
|
|
return;
|
|
|
|
// Prevent duplicate active items if search has no value
|
|
sortedSelectOptionItems.Where(x => x.IsActive)
|
|
.ForEach(x => x.IsActive = false);
|
|
|
|
sortedSelectOptionItems[nextIndex].IsActive = true;
|
|
ActiveOption = sortedSelectOptionItems[nextIndex];
|
|
await ElementScrollIntoViewAsync(sortedSelectOptionItems[nextIndex].Ref);
|
|
}
|
|
}
|
|
|
|
if (key == "ARROWDOWN")
|
|
{
|
|
if (!_dropDown.IsOverlayShow() && !Disabled)
|
|
{
|
|
await _dropDown.Show();
|
|
overlayFirstOpen = true;
|
|
}
|
|
|
|
if (!SelectOptionItems.Any())
|
|
return;
|
|
|
|
var sortedSelectOptionItems = SortedSelectOptionItems.ToList();
|
|
|
|
if (overlayFirstOpen)
|
|
{
|
|
// Check if there is a selected item and set it as active
|
|
var currentSelected = sortedSelectOptionItems.FirstOrDefault(x => x.IsSelected);
|
|
|
|
if (currentSelected != null)
|
|
{
|
|
if (currentSelected.IsActive)
|
|
return;
|
|
|
|
sortedSelectOptionItems.Where(x => x.IsActive)
|
|
.ForEach(i => i.IsActive = false);
|
|
|
|
currentSelected.IsActive = true;
|
|
ActiveOption = currentSelected;
|
|
|
|
// ToDo: Sometime the element does not scroll, you have to call the function twice
|
|
await ElementScrollIntoViewAsync(currentSelected.Ref);
|
|
await Task.Delay(1);
|
|
await ElementScrollIntoViewAsync(currentSelected.Ref);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
var firstActive = sortedSelectOptionItems.FirstOrDefault(x => x.IsActive && !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (firstActive == null)
|
|
{
|
|
var firstOption = sortedSelectOptionItems.FirstOrDefault(x => !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (firstOption != null)
|
|
{
|
|
firstOption.IsActive = true;
|
|
ActiveOption = firstOption;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
var possibilityCount = sortedSelectOptionItems.Count(x => !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (possibilityCount == 1) // Do nothing if there is only one choice
|
|
return;
|
|
|
|
var index = sortedSelectOptionItems.FindIndex(x => EqualityComparer<TItemValue>.Default.Equals(x.Value, firstActive.Value));
|
|
|
|
index++;
|
|
|
|
var nextIndex = sortedSelectOptionItems.FindIndex(index, x => !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (nextIndex == -1) // Maybe the next item is above the current active item
|
|
{
|
|
nextIndex = sortedSelectOptionItems.FindIndex(0, x => !x.IsHidden && !x.IsDisabled); // Try to find the index from the first available item
|
|
}
|
|
|
|
if (nextIndex == -1)
|
|
return;
|
|
|
|
// Prevent duplicate active items if search has no value
|
|
sortedSelectOptionItems.Where(x => x.IsActive)
|
|
.ForEach(x => x.IsActive = false);
|
|
|
|
sortedSelectOptionItems[nextIndex].IsActive = true;
|
|
ActiveOption = sortedSelectOptionItems[nextIndex];
|
|
await ElementScrollIntoViewAsync(sortedSelectOptionItems[nextIndex].Ref);
|
|
}
|
|
}
|
|
|
|
if (key == "HOME")
|
|
{
|
|
if (_dropDown.IsOverlayShow())
|
|
{
|
|
if (!SelectOptionItems.Any())
|
|
return;
|
|
|
|
var sortedSelectOptionItems = SortedSelectOptionItems.ToList();
|
|
|
|
var index = sortedSelectOptionItems.FindIndex(0, x => !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (index == -1)
|
|
return;
|
|
|
|
// Prevent duplicate active items if search has no value
|
|
sortedSelectOptionItems.Where(x => x.IsActive)
|
|
.ForEach(i => i.IsActive = false);
|
|
|
|
sortedSelectOptionItems[index].IsActive = true;
|
|
ActiveOption = sortedSelectOptionItems[index];
|
|
|
|
await ElementScrollIntoViewAsync(sortedSelectOptionItems[index].Ref);
|
|
}
|
|
}
|
|
|
|
if (key == "END")
|
|
{
|
|
if (_dropDown.IsOverlayShow())
|
|
{
|
|
if (!SelectOptionItems.Any())
|
|
return;
|
|
|
|
var sortedSelectOptionItems = SortedSelectOptionItems.ToList();
|
|
|
|
var index = sortedSelectOptionItems.FindLastIndex(x => !x.IsHidden && !x.IsDisabled);
|
|
|
|
if (index == -1)
|
|
return;
|
|
|
|
// Prevent duplicate active items if search has no value
|
|
sortedSelectOptionItems.Where(x => x.IsActive)
|
|
.ForEach(i => i.IsActive = false);
|
|
|
|
sortedSelectOptionItems[index].IsActive = true;
|
|
ActiveOption = sortedSelectOptionItems[index];
|
|
await ElementScrollIntoViewAsync(sortedSelectOptionItems[index].Ref);
|
|
}
|
|
}
|
|
|
|
if (key == "ESCAPE")
|
|
{
|
|
if (_dropDown.IsOverlayShow())
|
|
{
|
|
await CloseAsync();
|
|
}
|
|
}
|
|
|
|
if ((key == "DELETE" || key == "BACKSPACE") && AllowClear)
|
|
{
|
|
await OnInputClearClickAsync(new MouseEventArgs());
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method is called via EventCallBack if the Input element get the focus
|
|
/// </summary>
|
|
protected async Task OnInputFocusAsync(FocusEventArgs _)
|
|
{
|
|
await SetInputFocusAsync();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method is called via EventCallback if a key is pressed inside Input element.
|
|
/// The method is used to get the TAB event if the user press TAB to cycle trough elements.
|
|
/// If a TAB is received, the overlay will be closed and the Input element blures.
|
|
/// </summary>
|
|
protected async Task OnKeyDownAsync(KeyboardEventArgs e)
|
|
{
|
|
if (e == null) throw new ArgumentNullException(nameof(e));
|
|
|
|
var key = e.Key.ToUpperInvariant();
|
|
|
|
if (key == "TAB")
|
|
{
|
|
if (_dropDown.IsOverlayShow())
|
|
{
|
|
await CloseAsync();
|
|
}
|
|
|
|
await SetInputBlurAsync();
|
|
}
|
|
else if (TokenSeparators is not null && TokenSeparators.Length > 0)
|
|
{
|
|
_isToken = TokenSeparators.Contains(e.Key[0]);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Check if Focused property is False; Set the Focused property to true, change the
|
|
/// style and set the Focus on the Input element via DOM. It also invoke the OnFocus Action.
|
|
/// </summary>
|
|
protected async Task SetInputFocusAsync()
|
|
{
|
|
if (!Focused)
|
|
{
|
|
Focused = true;
|
|
|
|
SetClassMap();
|
|
|
|
await JsInvokeAsync(JSInteropConstants.Focus, _inputRef);
|
|
|
|
OnFocus?.Invoke();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method is called via EventCallBack if the Input element loses the focus
|
|
/// </summary>
|
|
protected async Task OnInputBlurAsync(FocusEventArgs _)
|
|
{
|
|
await SetInputBlurAsync();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Check if Focused property is true; Set the Focused property to false, change the
|
|
/// style and blures the Input element via DOM. It also invoke the OnBlur Action.
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
protected async Task SetInputBlurAsync()
|
|
{
|
|
if (Focused)
|
|
{
|
|
Focused = false;
|
|
|
|
SetClassMap();
|
|
|
|
await JsInvokeAsync(JSInteropConstants.Blur, _inputRef);
|
|
|
|
OnBlur?.Invoke();
|
|
}
|
|
}
|
|
|
|
protected void ClearSearch()
|
|
{
|
|
if (SelectMode != SelectMode.Default)
|
|
{
|
|
foreach (var item in SelectOptionItems)
|
|
{
|
|
if (item.IsHidden)
|
|
{
|
|
if ((HideSelected && !item.IsSelected) || !HideSelected)
|
|
item.IsHidden = false;
|
|
}
|
|
}
|
|
foreach (var item in AddedTags)
|
|
{
|
|
if (item.IsHidden)
|
|
{
|
|
if ((HideSelected && !item.IsSelected) || !HideSelected)
|
|
item.IsHidden = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
_searchValue = string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Search the first selected item, set IsActive to False for all other items and call the scrollIntoView function via JavaScript.
|
|
/// The method is used to scroll to the first selected item after opening the overlay.
|
|
/// </summary>
|
|
protected async Task ScrollToFirstSelectedItemAsync()
|
|
{
|
|
// Check if there is a selected item and set it as active
|
|
var currentSelected = SelectOptionItems.FirstOrDefault(x => x.IsSelected);
|
|
|
|
if (currentSelected != null)
|
|
{
|
|
SelectOptionItems.Where(x => x.IsActive)
|
|
.ForEach(i => i.IsActive = false);
|
|
|
|
currentSelected.IsActive = true;
|
|
ActiveOption = currentSelected;
|
|
// ToDo: Sometime the element does not scroll, you have to call the function twice
|
|
await ElementScrollIntoViewAsync(currentSelected.Ref);
|
|
await Task.Delay(1);
|
|
await ElementScrollIntoViewAsync(currentSelected.Ref);
|
|
}
|
|
else if (ActiveOption == null)//position on first element in the list
|
|
{
|
|
var selectionCandidate = SelectOptionItems.FirstOrDefault();
|
|
if (selectionCandidate != null)
|
|
ActiveOption = selectionCandidate;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method is called via EventCallBack after the user clicked on the Clear icon inside the Input element.
|
|
/// Set the IsSelected and IsHidden properties for all items to False. It updates the overlay position if
|
|
/// the SelectMode is Tags or Multiple. Invoke the OnClearSelected Action. Set the Value(s) to default.
|
|
/// </summary>
|
|
protected async Task OnInputClearClickAsync(MouseEventArgs _)
|
|
{
|
|
List<SelectOptionItem<TItemValue, TItem>> tagItems = new();
|
|
|
|
SelectOptionItems.Where(c => c.IsSelected)
|
|
.ForEach(i =>
|
|
{
|
|
i.IsSelected = false;
|
|
i.IsHidden = false;
|
|
if (i.IsAddedTag)
|
|
tagItems.Add(i);
|
|
});
|
|
//When clearing, also remove all added tags that are kept after adding in SelectOptionItems
|
|
if (tagItems.Count > 0)
|
|
{
|
|
foreach (var item in tagItems)
|
|
{
|
|
SelectOptionItems.Remove(item);
|
|
}
|
|
}
|
|
AddedTags.Clear();
|
|
ActiveOption = SelectOptionItems.FirstOrDefault();
|
|
CustomTagSelectOptionItem = null;
|
|
SelectedOptionItems.Clear();
|
|
|
|
await ClearSelectedAsync();
|
|
|
|
if (SelectMode != SelectMode.Default)
|
|
{
|
|
await Task.Delay(1); // Todo - Workaround because UI does not refresh
|
|
await UpdateOverlayPositionAsync();
|
|
StateHasChanged(); // Todo - Workaround because UI does not refresh
|
|
}
|
|
|
|
OnClearSelected?.Invoke();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Method is called via EventCallBack if the user clicked on the Close icon of a Tag.
|
|
/// </summary>
|
|
protected async Task OnRemoveSelectedAsync(SelectOptionItem<TItemValue, TItem> selectOption)
|
|
{
|
|
if (selectOption == null) throw new ArgumentNullException(nameof(selectOption));
|
|
|
|
await SetValueAsync(selectOption);
|
|
}
|
|
|
|
internal async Task OnArrowClick(MouseEventArgs args)
|
|
{
|
|
await _dropDown.OnClickDiv(args);
|
|
}
|
|
|
|
#endregion Events
|
|
}
|
|
}
|