robloo
4 years ago
2 changed files with 549 additions and 524 deletions
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// (c) Copyright Microsoft Corporation.
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// This source is subject to the Microsoft Public License (Ms-PL).
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// Please see https://go.microsoft.com/fwlink/?LinkID=131993 for details.
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// All other rights reserved.
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using System; |
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using System.Collections; |
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using System.Collections.Generic; |
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using System.Threading; |
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using System.Threading.Tasks; |
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using Avalonia.Controls.Templates; |
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using Avalonia.Data; |
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namespace Avalonia.Controls |
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{ |
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public partial class AutoCompleteBox |
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{ |
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public static readonly StyledProperty<string?> WatermarkProperty = |
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TextBox.WatermarkProperty.AddOwner<AutoCompleteBox>(); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.MinimumPrefixLength" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.MinimumPrefixLength" />
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/// dependency property.</value>
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public static readonly StyledProperty<int> MinimumPrefixLengthProperty = |
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AvaloniaProperty.Register<AutoCompleteBox, int>( |
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nameof(MinimumPrefixLength), 1, |
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validate: IsValidMinimumPrefixLength); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.MinimumPopulateDelay" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.MinimumPopulateDelay" />
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/// dependency property.</value>
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public static readonly StyledProperty<TimeSpan> MinimumPopulateDelayProperty = |
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AvaloniaProperty.Register<AutoCompleteBox, TimeSpan>( |
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nameof(MinimumPopulateDelay), |
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TimeSpan.Zero, |
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validate: IsValidMinimumPopulateDelay); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.MaxDropDownHeight" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.MaxDropDownHeight" />
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/// dependency property.</value>
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public static readonly StyledProperty<double> MaxDropDownHeightProperty = |
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AvaloniaProperty.Register<AutoCompleteBox, double>( |
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nameof(MaxDropDownHeight), |
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double.PositiveInfinity, |
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validate: IsValidMaxDropDownHeight); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.IsTextCompletionEnabled" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.IsTextCompletionEnabled" />
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/// dependency property.</value>
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public static readonly StyledProperty<bool> IsTextCompletionEnabledProperty = |
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AvaloniaProperty.Register<AutoCompleteBox, bool>(nameof(IsTextCompletionEnabled)); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemTemplate" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemTemplate" />
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/// dependency property.</value>
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public static readonly StyledProperty<IDataTemplate> ItemTemplateProperty = |
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AvaloniaProperty.Register<AutoCompleteBox, IDataTemplate>(nameof(ItemTemplate)); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.IsDropDownOpen" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.IsDropDownOpen" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, bool> IsDropDownOpenProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, bool>( |
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nameof(IsDropDownOpen), |
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o => o.IsDropDownOpen, |
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(o, v) => o.IsDropDownOpen = v); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.SelectedItem" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.SelectedItem" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, object?> SelectedItemProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, object?>( |
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nameof(SelectedItem), |
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o => o.SelectedItem, |
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(o, v) => o.SelectedItem = v, |
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defaultBindingMode: BindingMode.TwoWay, |
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enableDataValidation: true); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.Text" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.Text" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, string?> TextProperty = |
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TextBlock.TextProperty.AddOwnerWithDataValidation<AutoCompleteBox>( |
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o => o.Text, |
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(o, v) => o.Text = v, |
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defaultBindingMode: BindingMode.TwoWay, |
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enableDataValidation: true); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.SearchText" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.SearchText" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, string?> SearchTextProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, string?>( |
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nameof(SearchText), |
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o => o.SearchText, |
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unsetValue: string.Empty); |
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/// <summary>
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/// Gets the identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.FilterMode" />
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/// dependency property.
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/// </summary>
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public static readonly StyledProperty<AutoCompleteFilterMode> FilterModeProperty = |
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AvaloniaProperty.Register<AutoCompleteBox, AutoCompleteFilterMode>( |
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nameof(FilterMode), |
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defaultValue: AutoCompleteFilterMode.StartsWith, |
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validate: IsValidFilterMode); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemFilter" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemFilter" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, AutoCompleteFilterPredicate<object?>?> ItemFilterProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, AutoCompleteFilterPredicate<object?>?>( |
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nameof(ItemFilter), |
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o => o.ItemFilter, |
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(o, v) => o.ItemFilter = v); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.TextFilter" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.TextFilter" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, AutoCompleteFilterPredicate<string?>?> TextFilterProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, AutoCompleteFilterPredicate<string?>?>( |
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nameof(TextFilter), |
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o => o.TextFilter, |
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(o, v) => o.TextFilter = v, |
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unsetValue: AutoCompleteSearch.GetFilter(AutoCompleteFilterMode.StartsWith)); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemSelector" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemSelector" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, AutoCompleteSelector<object>?> ItemSelectorProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, AutoCompleteSelector<object>?>( |
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nameof(ItemSelector), |
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o => o.ItemSelector, |
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(o, v) => o.ItemSelector = v); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.TextSelector" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.TextSelector" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, AutoCompleteSelector<string?>?> TextSelectorProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, AutoCompleteSelector<string?>?>( |
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nameof(TextSelector), |
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o => o.TextSelector, |
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(o, v) => o.TextSelector = v); |
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/// <summary>
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/// Identifies the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
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/// dependency property.
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/// </summary>
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/// <value>The identifier for the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
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/// dependency property.</value>
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public static readonly DirectProperty<AutoCompleteBox, IEnumerable?> ItemsProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, IEnumerable?>( |
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nameof(Items), |
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o => o.Items, |
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(o, v) => o.Items = v); |
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public static readonly DirectProperty<AutoCompleteBox, Func<string?, CancellationToken, Task<IEnumerable<object>>>?> AsyncPopulatorProperty = |
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AvaloniaProperty.RegisterDirect<AutoCompleteBox, Func<string?, CancellationToken, Task<IEnumerable<object>>>?>( |
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nameof(AsyncPopulator), |
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o => o.AsyncPopulator, |
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(o, v) => o.AsyncPopulator = v); |
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/// <summary>
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/// Gets or sets the minimum number of characters required to be entered
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/// in the text box before the
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> displays
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/// possible matches.
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/// matches.
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/// </summary>
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/// <value>
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/// The minimum number of characters to be entered in the text box
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/// before the <see cref="T:Avalonia.Controls.AutoCompleteBox" />
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/// displays possible matches. The default is 1.
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/// </value>
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/// <remarks>
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/// If you set MinimumPrefixLength to -1, the AutoCompleteBox will
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/// not provide possible matches. There is no maximum value, but
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/// setting MinimumPrefixLength to value that is too large will
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/// prevent the AutoCompleteBox from providing possible matches as well.
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/// </remarks>
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public int MinimumPrefixLength |
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{ |
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get => GetValue(MinimumPrefixLengthProperty); |
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set => SetValue(MinimumPrefixLengthProperty, value); |
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} |
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/// <summary>
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/// Gets or sets a value indicating whether the first possible match
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/// found during the filtering process will be displayed automatically
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/// in the text box.
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/// </summary>
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/// <value>
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/// True if the first possible match found will be displayed
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/// automatically in the text box; otherwise, false. The default is
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/// false.
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/// </value>
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public bool IsTextCompletionEnabled |
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{ |
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get => GetValue(IsTextCompletionEnabledProperty); |
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set => SetValue(IsTextCompletionEnabledProperty, value); |
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} |
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/// <summary>
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/// Gets or sets the <see cref="T:Avalonia.DataTemplate" /> used
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/// to display each item in the drop-down portion of the control.
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/// </summary>
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/// <value>The <see cref="T:Avalonia.DataTemplate" /> used to
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/// display each item in the drop-down. The default is null.</value>
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/// <remarks>
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/// You use the ItemTemplate property to specify the visualization
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/// of the data objects in the drop-down portion of the AutoCompleteBox
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/// control. If your AutoCompleteBox is bound to a collection and you
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/// do not provide specific display instructions by using a
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/// DataTemplate, the resulting UI of each item is a string
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/// representation of each object in the underlying collection.
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/// </remarks>
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public IDataTemplate ItemTemplate |
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{ |
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get => GetValue(ItemTemplateProperty); |
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set => SetValue(ItemTemplateProperty, value); |
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} |
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/// <summary>
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/// Gets or sets the minimum delay, after text is typed
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/// in the text box before the
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control
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/// populates the list of possible matches in the drop-down.
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/// </summary>
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/// <value>The minimum delay, after text is typed in
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/// the text box, but before the
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> populates
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/// the list of possible matches in the drop-down. The default is 0.</value>
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public TimeSpan MinimumPopulateDelay |
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{ |
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get => GetValue(MinimumPopulateDelayProperty); |
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set => SetValue(MinimumPopulateDelayProperty, value); |
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} |
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/// <summary>
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/// Gets or sets the maximum height of the drop-down portion of the
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control.
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/// </summary>
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/// <value>The maximum height of the drop-down portion of the
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control.
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/// The default is <see cref="F:System.Double.PositiveInfinity" />.</value>
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/// <exception cref="T:System.ArgumentException">The specified value is less than 0.</exception>
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public double MaxDropDownHeight |
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{ |
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get => GetValue(MaxDropDownHeightProperty); |
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set => SetValue(MaxDropDownHeightProperty, value); |
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} |
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/// <summary>
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/// Gets or sets a value indicating whether the drop-down portion of
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/// the control is open.
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/// </summary>
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/// <value>
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/// True if the drop-down is open; otherwise, false. The default is
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/// false.
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/// </value>
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public bool IsDropDownOpen |
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{ |
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get => _isDropDownOpen; |
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set => SetAndRaise(IsDropDownOpenProperty, ref _isDropDownOpen, value); |
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} |
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/// <summary>
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/// Gets or sets the <see cref="T:Avalonia.Data.Binding" /> that
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/// is used to get the values for display in the text portion of
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/// the <see cref="T:Avalonia.Controls.AutoCompleteBox" />
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/// control.
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/// </summary>
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/// <value>The <see cref="T:Avalonia.Data.IBinding" /> object used
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/// when binding to a collection property.</value>
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[AssignBinding] |
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public IBinding? ValueMemberBinding |
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{ |
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get => _valueBindingEvaluator?.ValueBinding; |
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set |
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{ |
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if (ValueMemberBinding != value) |
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{ |
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_valueBindingEvaluator = new BindingEvaluator<string>(value); |
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OnValueMemberBindingChanged(value); |
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} |
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} |
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} |
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/// <summary>
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/// Gets or sets the selected item in the drop-down.
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/// </summary>
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/// <value>The selected item in the drop-down.</value>
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/// <remarks>
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/// If the IsTextCompletionEnabled property is true and text typed by
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/// the user matches an item in the ItemsSource collection, which is
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/// then displayed in the text box, the SelectedItem property will be
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/// a null reference.
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/// </remarks>
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public object? SelectedItem |
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{ |
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get => _selectedItem; |
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set => SetAndRaise(SelectedItemProperty, ref _selectedItem, value); |
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} |
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/// <summary>
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/// Gets or sets the text in the text box portion of the
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control.
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/// </summary>
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/// <value>The text in the text box portion of the
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control.</value>
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public string? Text |
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{ |
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get => _text; |
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set => SetAndRaise(TextProperty, ref _text, value); |
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} |
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/// <summary>
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/// Gets the text that is used to filter items in the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
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/// item collection.
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/// </summary>
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/// <value>The text that is used to filter items in the
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/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
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/// item collection.</value>
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/// <remarks>
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/// The SearchText value is typically the same as the
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/// Text property, but is set after the TextChanged event occurs
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/// and before the Populating event.
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/// </remarks>
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public string? SearchText |
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{ |
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get => _searchText; |
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private set |
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{ |
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try |
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{ |
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_allowWrite = true; |
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SetAndRaise(SearchTextProperty, ref _searchText, value); |
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} |
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finally |
||||
|
{ |
||||
|
_allowWrite = false; |
||||
|
} |
||||
|
} |
||||
|
} |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Gets or sets how the text in the text box is used to filter items
|
||||
|
/// specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
|
||||
|
/// property for display in the drop-down.
|
||||
|
/// </summary>
|
||||
|
/// <value>One of the
|
||||
|
/// <see cref="T:Avalonia.Controls.AutoCompleteFilterMode" />
|
||||
|
/// values The default is
|
||||
|
/// <see cref="F:Avalonia.Controls.AutoCompleteFilterMode.StartsWith" />.</value>
|
||||
|
/// <exception cref="T:System.ArgumentException">The specified value is
|
||||
|
/// not a valid
|
||||
|
/// <see cref="T:Avalonia.Controls.AutoCompleteFilterMode" />.</exception>
|
||||
|
/// <remarks>
|
||||
|
/// Use the FilterMode property to specify how possible matches are
|
||||
|
/// filtered. For example, possible matches can be filtered in a
|
||||
|
/// predefined or custom way. The search mode is automatically set to
|
||||
|
/// Custom if you set the ItemFilter property.
|
||||
|
/// </remarks>
|
||||
|
public AutoCompleteFilterMode FilterMode |
||||
|
{ |
||||
|
get => GetValue(FilterModeProperty); |
||||
|
set => SetValue(FilterModeProperty, value); |
||||
|
} |
||||
|
|
||||
|
public string? Watermark |
||||
|
{ |
||||
|
get => GetValue(WatermarkProperty); |
||||
|
set => SetValue(WatermarkProperty, value); |
||||
|
} |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Gets or sets the custom method that uses user-entered text to filter
|
||||
|
/// the items specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
|
||||
|
/// property for display in the drop-down.
|
||||
|
/// </summary>
|
||||
|
/// <value>The custom method that uses the user-entered text to filter
|
||||
|
/// the items specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
|
||||
|
/// property. The default is null.</value>
|
||||
|
/// <remarks>
|
||||
|
/// The filter mode is automatically set to Custom if you set the
|
||||
|
/// ItemFilter property.
|
||||
|
/// </remarks>
|
||||
|
public AutoCompleteFilterPredicate<object?>? ItemFilter |
||||
|
{ |
||||
|
get => _itemFilter; |
||||
|
set => SetAndRaise(ItemFilterProperty, ref _itemFilter, value); |
||||
|
} |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Gets or sets the custom method that uses the user-entered text to
|
||||
|
/// filter items specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
|
||||
|
/// property in a text-based way for display in the drop-down.
|
||||
|
/// </summary>
|
||||
|
/// <value>The custom method that uses the user-entered text to filter
|
||||
|
/// items specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
|
||||
|
/// property in a text-based way for display in the drop-down.</value>
|
||||
|
/// <remarks>
|
||||
|
/// The search mode is automatically set to Custom if you set the
|
||||
|
/// TextFilter property.
|
||||
|
/// </remarks>
|
||||
|
public AutoCompleteFilterPredicate<string?>? TextFilter |
||||
|
{ |
||||
|
get => _textFilter; |
||||
|
set => SetAndRaise(TextFilterProperty, ref _textFilter, value); |
||||
|
} |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Gets or sets the custom method that combines the user-entered
|
||||
|
/// text and one of the items specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />.
|
||||
|
/// </summary>
|
||||
|
/// <value>
|
||||
|
/// The custom method that combines the user-entered
|
||||
|
/// text and one of the items specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />.
|
||||
|
/// </value>
|
||||
|
public AutoCompleteSelector<object>? ItemSelector |
||||
|
{ |
||||
|
get => _itemSelector; |
||||
|
set => SetAndRaise(ItemSelectorProperty, ref _itemSelector, value); |
||||
|
} |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Gets or sets the custom method that combines the user-entered
|
||||
|
/// text and one of the items specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
|
||||
|
/// in a text-based way.
|
||||
|
/// </summary>
|
||||
|
/// <value>
|
||||
|
/// The custom method that combines the user-entered
|
||||
|
/// text and one of the items specified by the
|
||||
|
/// <see cref="P:Avalonia.Controls.AutoCompleteBox.ItemsSource" />
|
||||
|
/// in a text-based way.
|
||||
|
/// </value>
|
||||
|
public AutoCompleteSelector<string?>? TextSelector |
||||
|
{ |
||||
|
get => _textSelector; |
||||
|
set => SetAndRaise(TextSelectorProperty, ref _textSelector, value); |
||||
|
} |
||||
|
|
||||
|
public Func<string?, CancellationToken, Task<IEnumerable<object>>>? AsyncPopulator |
||||
|
{ |
||||
|
get => _asyncPopulator; |
||||
|
set => SetAndRaise(AsyncPopulatorProperty, ref _asyncPopulator, value); |
||||
|
} |
||||
|
|
||||
|
/// <summary>
|
||||
|
/// Gets or sets a collection that is used to generate the items for the
|
||||
|
/// drop-down portion of the
|
||||
|
/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control.
|
||||
|
/// </summary>
|
||||
|
/// <value>The collection that is used to generate the items of the
|
||||
|
/// drop-down portion of the
|
||||
|
/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control.</value>
|
||||
|
public IEnumerable? Items |
||||
|
{ |
||||
|
get => _itemsEnumerable; |
||||
|
set => SetAndRaise(ItemsProperty, ref _itemsEnumerable, value); |
||||
|
} |
||||
|
} |
||||
|
} |
||||
Loading…
Reference in new issue