Steven Kirk
8 years ago
committed by
GitHub
GitHub
13 changed files with 4433 additions and 6 deletions
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<UserControl xmlns="https://github.com/avaloniaui"> |
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<StackPanel Orientation="Vertical" Gap="4"> |
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<TextBlock Classes="h1">AutoCompleteBox</TextBlock> |
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<TextBlock Classes="h2">A control into which the user can input text</TextBlock> |
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|
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<StackPanel Orientation="Horizontal" |
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Margin="0,16,0,0" |
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HorizontalAlignment="Center" |
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Gap="8"> |
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<StackPanel Orientation="Vertical"> |
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<TextBlock Text="MinimumPrefixLength: 1"/> |
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<AutoCompleteBox Width="200" |
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Margin="0,0,0,8" |
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MinimumPrefixLength="1"/> |
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<TextBlock Text="MinimumPrefixLength: 3"/> |
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<AutoCompleteBox Width="200" |
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Margin="0,0,0,8" |
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MinimumPrefixLength="3"/> |
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<TextBlock Text="MinimumPopulateDelay: 1 Second"/> |
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<AutoCompleteBox Width="200" |
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Margin="0,0,0,8" |
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MinimumPopulateDelay="1"/> |
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<TextBlock Text="MaxDropDownHeight: 60"/> |
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<AutoCompleteBox Width="200" |
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Margin="0,0,0,8" |
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MaxDropDownHeight="60"/> |
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<AutoCompleteBox Width="200" |
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Margin="0,0,0,8" |
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Watermark="Watermark"/> |
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<TextBlock Text="Disabled"/> |
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<AutoCompleteBox Width="200" |
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IsEnabled="False"/> |
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</StackPanel> |
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|
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|
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<StackPanel Orientation="Vertical"> |
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|
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<TextBlock Text="ValueMemeberSelector"/> |
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<AutoCompleteBox Width="200" |
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Margin="0,0,0,8" |
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ValueMemberSelector="Capital"/> |
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<TextBlock Text="ValueMemberBinding"/> |
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<AutoCompleteBox Width="200" |
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Margin="0,0,0,8" |
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ValueMemberBinding="{Binding Capital}"/> |
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<TextBlock Text="Multi-Binding"/> |
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<AutoCompleteBox Name="MultiBindingBox" |
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Width="200" |
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Margin="0,0,0,8" |
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FilterMode="Contains"/> |
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<TextBlock Text="Async Populate"/> |
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<AutoCompleteBox Name="AsyncBox" |
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Width="200" |
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Margin="0,0,0,8" |
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FilterMode="None"/> |
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</StackPanel> |
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</StackPanel> |
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</StackPanel> |
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</UserControl> |
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@ -0,0 +1,143 @@ |
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using Avalonia.Controls; |
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using Avalonia.LogicalTree; |
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using Avalonia.Markup; |
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using Avalonia.Markup.Xaml; |
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using Avalonia.Markup.Xaml.Data; |
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Threading; |
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using System.Threading.Tasks; |
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|
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namespace ControlCatalog.Pages |
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{ |
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public class AutoCompleteBoxPage : UserControl |
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{ |
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public class StateData |
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{ |
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public string Name { get; private set; } |
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public string Abbreviation { get; private set; } |
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public string Capital { get; private set; } |
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|
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public StateData(string name, string abbreviatoin, string capital) |
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{ |
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Name = name; |
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Abbreviation = abbreviatoin; |
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Capital = capital; |
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} |
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|
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public override string ToString() |
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{ |
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return Name; |
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} |
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} |
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|
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private StateData[] BuildAllStates() |
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{ |
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return new StateData[] |
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{ |
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new StateData("Alabama","AL","Montgomery"), |
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new StateData("Alaska","AK","Juneau"), |
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new StateData("Arizona","AZ","Phoenix"), |
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new StateData("Arkansas","AR","Little Rock"), |
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new StateData("California","CA","Sacramento"), |
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new StateData("Colorado","CO","Denver"), |
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new StateData("Connecticut","CT","Hartford"), |
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new StateData("Delaware","DE","Dover"), |
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new StateData("Florida","FL","Tallahassee"), |
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new StateData("Georgia","GA","Atlanta"), |
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new StateData("Hawaii","HI","Honolulu"), |
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new StateData("Idaho","ID","Boise"), |
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new StateData("Illinois","IL","Springfield"), |
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new StateData("Indiana","IN","Indianapolis"), |
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new StateData("Iowa","IA","Des Moines"), |
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new StateData("Kansas","KS","Topeka"), |
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new StateData("Kentucky","KY","Frankfort"), |
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new StateData("Louisiana","LA","Baton Rouge"), |
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new StateData("Maine","ME","Augusta"), |
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new StateData("Maryland","MD","Annapolis"), |
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new StateData("Massachusetts","MA","Boston"), |
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new StateData("Michigan","MI","Lansing"), |
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new StateData("Minnesota","MN","St. Paul"), |
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new StateData("Mississippi","MS","Jackson"), |
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new StateData("Missouri","MO","Jefferson City"), |
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new StateData("Montana","MT","Helena"), |
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new StateData("Nebraska","NE","Lincoln"), |
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new StateData("Nevada","NV","Carson City"), |
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new StateData("New Hampshire","NH","Concord"), |
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new StateData("New Jersey","NJ","Trenton"), |
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new StateData("New Mexico","NM","Santa Fe"), |
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new StateData("New York","NY","Albany"), |
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new StateData("North Carolina","NC","Raleigh"), |
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new StateData("North Dakota","ND","Bismarck"), |
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new StateData("Ohio","OH","Columbus"), |
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new StateData("Oklahoma","OK","Oklahoma City"), |
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new StateData("Oregon","OR","Salem"), |
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new StateData("Pennsylvania","PA","Harrisburg"), |
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new StateData("Rhode Island","RI","Providence"), |
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new StateData("South Carolina","SC","Columbia"), |
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new StateData("South Dakota","SD","Pierre"), |
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new StateData("Tennessee","TN","Nashville"), |
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new StateData("Texas","TX","Austin"), |
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new StateData("Utah","UT","Salt Lake City"), |
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new StateData("Vermont","VT","Montpelier"), |
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new StateData("Virginia","VA","Richmond"), |
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new StateData("Washington","WA","Olympia"), |
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new StateData("West Virginia","WV","Charleston"), |
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new StateData("Wisconsin","WI","Madison"), |
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new StateData("Wyoming","WY","Cheyenne"), |
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}; |
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} |
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public StateData[] States { get; private set; } |
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|
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public AutoCompleteBoxPage() |
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{ |
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this.InitializeComponent(); |
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|
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States = BuildAllStates(); |
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foreach (AutoCompleteBox box in GetAllAutoCompleteBox()) |
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{ |
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box.Items = States; |
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} |
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var converter = new FuncMultiValueConverter<string, string>(parts => |
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{ |
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return String.Format("{0} ({1})", parts.ToArray()); |
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}); |
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var binding = new MultiBinding { Converter = converter }; |
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binding.Bindings.Add(new Binding("Name")); |
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binding.Bindings.Add(new Binding("Abbreviation")); |
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var multibindingBox = this.FindControl<AutoCompleteBox>("MultiBindingBox"); |
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multibindingBox.ValueMemberBinding = binding; |
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var asyncBox = this.FindControl<AutoCompleteBox>("AsyncBox"); |
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asyncBox.AsyncPopulator = PopulateAsync; |
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} |
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private IEnumerable<AutoCompleteBox> GetAllAutoCompleteBox() |
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{ |
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return |
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this.GetLogicalDescendants() |
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.OfType<AutoCompleteBox>(); |
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} |
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|
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private bool StringContains(string str, string query) |
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{ |
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return str.IndexOf(query, StringComparison.OrdinalIgnoreCase) >= 0; |
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} |
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private async Task<IEnumerable<object>> PopulateAsync(string searchText, CancellationToken cancellationToken) |
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{ |
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await Task.Delay(TimeSpan.FromSeconds(1.5), cancellationToken); |
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return |
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States.Where(data => StringContains(data.Name, searchText) || StringContains(data.Capital, searchText)) |
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.ToList(); |
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} |
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|
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private void InitializeComponent() |
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{ |
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AvaloniaXamlLoader.Load(this); |
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} |
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} |
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} |
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File diff suppressed because it is too large
@ -0,0 +1,64 @@ |
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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 http://go.microsoft.com/fwlink/?LinkID=131993 for details.
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// All other rights reserved.
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|
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using System; |
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using System.Collections; |
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using Avalonia.Interactivity; |
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using Avalonia.Input; |
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|
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namespace Avalonia.Controls.Utils |
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{ |
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/// <summary>
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/// Defines an item collection, selection members, and key handling for the
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/// selection adapter contained in the drop-down portion of an
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control.
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/// </summary>
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public interface ISelectionAdapter |
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{ |
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/// <summary>
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/// Gets or sets the selected item.
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/// </summary>
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/// <value>The currently selected item.</value>
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object SelectedItem { get; set; } |
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|
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/// <summary>
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/// Occurs when the
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/// <see cref="P:Avalonia.Controls.Utils.ISelectionAdapter.SelectedItem" />
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/// property value changes.
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/// </summary>
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event EventHandler<SelectionChangedEventArgs> SelectionChanged; |
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|
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/// <summary>
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/// Gets or sets a collection that is used to generate content for the
|
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/// selection adapter.
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/// </summary>
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/// <value>The collection that is used to generate content for the
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/// selection adapter.</value>
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IEnumerable Items { get; set; } |
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|
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/// <summary>
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/// Occurs when a selected item is not cancelled and is committed as the
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/// selected item.
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/// </summary>
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event EventHandler<RoutedEventArgs> Commit; |
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|
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/// <summary>
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/// Occurs when a selection has been canceled.
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/// </summary>
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event EventHandler<RoutedEventArgs> Cancel; |
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|
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/// <summary>
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/// Provides handling for the
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/// <see cref="E:Avalonia.Input.InputElement.KeyDown" /> event that occurs
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/// when a key is pressed while the drop-down portion of the
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> has focus.
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/// </summary>
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/// <param name="e">A <see cref="T:Avalonia.Input.KeyEventArgs" />
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/// that contains data about the
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/// <see cref="E:Avalonia.Input.InputElement.KeyDown" /> event.</param>
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void HandleKeyDown(KeyEventArgs e); |
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} |
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} |
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@ -0,0 +1,342 @@ |
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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 http://go.microsoft.com/fwlink/?LinkID=131993 for details.
|
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// All other rights reserved.
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|
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using System; |
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using System.Linq; |
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using System.Collections.Generic; |
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using System.Text; |
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using Avalonia.Controls.Primitives; |
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using Avalonia.Interactivity; |
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using Avalonia.Input; |
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using Avalonia.LogicalTree; |
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using System.Collections; |
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using System.Diagnostics; |
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|
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namespace Avalonia.Controls.Utils |
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{ |
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/// <summary>
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/// Represents the selection adapter contained in the drop-down portion of
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/// an <see cref="T:Avalonia.Controls.AutoCompleteBox" /> control.
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/// </summary>
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public class SelectingItemsControlSelectionAdapter : ISelectionAdapter |
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{ |
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/// <summary>
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/// The SelectingItemsControl instance.
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/// </summary>
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private SelectingItemsControl _selector; |
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|
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/// <summary>
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/// Gets or sets a value indicating whether the selection change event
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/// should not be fired.
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/// </summary>
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private bool IgnoringSelectionChanged { get; set; } |
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|
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/// <summary>
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/// Gets or sets the underlying
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/// <see cref="T:Avalonia.Controls.Primitives.SelectingItemsControl" />
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/// control.
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/// </summary>
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/// <value>The underlying
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/// <see cref="T:Avalonia.Controls.Primitives.SelectingItemsControl" />
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/// control.</value>
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public SelectingItemsControl SelectorControl |
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{ |
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get { return _selector; } |
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|
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set |
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{ |
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if (_selector != null) |
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{ |
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_selector.SelectionChanged -= OnSelectionChanged; |
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_selector.PointerReleased -= OnSelectorPointerReleased; |
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} |
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_selector = value; |
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if (_selector != null) |
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{ |
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_selector.SelectionChanged += OnSelectionChanged; |
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_selector.PointerReleased += OnSelectorPointerReleased; |
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} |
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} |
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} |
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|
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/// <summary>
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/// Occurs when the
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/// <see cref="P:Avalonia.Controls.Utils.SelectingItemsControlSelectionAdapter.SelectedItem" />
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/// property value changes.
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/// </summary>
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public event EventHandler<SelectionChangedEventArgs> SelectionChanged; |
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|
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/// <summary>
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/// Occurs when an item is selected and is committed to the underlying
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/// <see cref="T:Avalonia.Controls.Primitives.SelectingItemsControl" />
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/// control.
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/// </summary>
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public event EventHandler<RoutedEventArgs> Commit; |
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|
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/// <summary>
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/// Occurs when a selection is canceled before it is committed.
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/// </summary>
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public event EventHandler<RoutedEventArgs> Cancel; |
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/// <summary>
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/// Initializes a new instance of the
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/// <see cref="T:Avalonia.Controls.Utils.SelectingItemsControlSelectionAdapter" />
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/// class.
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/// </summary>
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public SelectingItemsControlSelectionAdapter() |
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{ |
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|
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} |
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|
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/// <summary>
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/// Initializes a new instance of the
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/// <see cref="T:Avalonia.Controls.Utils.SelectingItemsControlSelectionAdapterr" />
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/// class with the specified
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/// <see cref="T:Avalonia.Controls.Primitives.SelectingItemsControl" />
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/// control.
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/// </summary>
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/// <param name="selector">The
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/// <see cref="T:Avalonia.Controls.Primitives.SelectingItemsControl" /> control
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/// to wrap as a
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/// <see cref="T:Avalonia.Controls.Utils.SelectingItemsControlSelectionAdapter" />.</param>
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public SelectingItemsControlSelectionAdapter(SelectingItemsControl selector) |
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{ |
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SelectorControl = selector; |
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} |
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/// <summary>
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/// Gets or sets the selected item of the selection adapter.
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/// </summary>
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/// <value>The selected item of the underlying selection adapter.</value>
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public object SelectedItem |
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{ |
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get |
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{ |
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return SelectorControl?.SelectedItem; |
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} |
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|
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set |
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{ |
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IgnoringSelectionChanged = true; |
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if (SelectorControl != null) |
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{ |
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SelectorControl.SelectedItem = value; |
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} |
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// Attempt to reset the scroll viewer's position
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if (value == null) |
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{ |
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ResetScrollViewer(); |
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} |
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IgnoringSelectionChanged = false; |
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} |
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} |
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|
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/// <summary>
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/// Gets or sets a collection that is used to generate the content of
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/// the selection adapter.
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/// </summary>
|
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/// <value>The collection used to generate content for the selection
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/// adapter.</value>
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public IEnumerable Items |
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{ |
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get |
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{ |
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return SelectorControl?.Items; |
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} |
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set |
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{ |
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if (SelectorControl != null) |
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{ |
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SelectorControl.Items = value; |
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} |
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} |
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} |
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|
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/// <summary>
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/// If the control contains a ScrollViewer, this will reset the viewer
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/// to be scrolled to the top.
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/// </summary>
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private void ResetScrollViewer() |
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{ |
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if (SelectorControl != null) |
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{ |
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ScrollViewer sv = SelectorControl.GetLogicalDescendants().OfType<ScrollViewer>().FirstOrDefault(); |
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if (sv != null) |
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{ |
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sv.Offset = new Vector(0, 0); |
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} |
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} |
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} |
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|
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/// <summary>
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/// Handles the mouse left button up event on the selector control.
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/// </summary>
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/// <param name="sender">The source object.</param>
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/// <param name="e">The event data.</param>
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private void OnSelectorPointerReleased(object sender, PointerReleasedEventArgs e) |
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{ |
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if (e.MouseButton == MouseButton.Left) |
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{ |
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OnCommit(); |
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} |
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} |
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|
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/// <summary>
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/// Handles the SelectionChanged event on the SelectingItemsControl control.
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/// </summary>
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/// <param name="sender">The source object.</param>
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/// <param name="e">The selection changed event data.</param>
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private void OnSelectionChanged(object sender, SelectionChangedEventArgs e) |
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{ |
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if (IgnoringSelectionChanged) |
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{ |
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return; |
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} |
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|
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SelectionChanged?.Invoke(sender, e); |
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} |
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|
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/// <summary>
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/// Increments the
|
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/// <see cref="P:Avalonia.Controls.Primitives.SelectingItemsControl.SelectedIndex" />
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/// property of the underlying
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/// <see cref="T:Avalonia.Controls.Primitives.SelectingItemsControl" />
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/// control.
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/// </summary>
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protected void SelectedIndexIncrement() |
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{ |
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if (SelectorControl != null) |
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{ |
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SelectorControl.SelectedIndex = SelectorControl.SelectedIndex + 1 >= SelectorControl.ItemCount ? -1 : SelectorControl.SelectedIndex + 1; |
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} |
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} |
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|
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/// <summary>
|
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/// Decrements the
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/// <see cref="P:Avalonia.Controls.Primitives.SelectingItemsControl.SelectedIndex" />
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/// property of the underlying
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/// <see cref="T:Avalonia.Controls.Primitives.SelectingItemsControl" />
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/// control.
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/// </summary>
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protected void SelectedIndexDecrement() |
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{ |
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if (SelectorControl != null) |
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{ |
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int index = SelectorControl.SelectedIndex; |
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if (index >= 0) |
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{ |
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SelectorControl.SelectedIndex--; |
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} |
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else if (index == -1) |
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{ |
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SelectorControl.SelectedIndex = SelectorControl.ItemCount - 1; |
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} |
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} |
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} |
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|
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/// <summary>
|
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/// Provides handling for the
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/// <see cref="E:Avalonia.Input.InputElement.KeyDown" /> event that occurs
|
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/// when a key is pressed while the drop-down portion of the
|
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/// <see cref="T:Avalonia.Controls.AutoCompleteBox" /> has focus.
|
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/// </summary>
|
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/// <param name="e">A <see cref="T:Avalonia.Input.KeyEventArgs" />
|
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/// that contains data about the
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/// <see cref="E:Avalonia.Input.InputElement.KeyDown" /> event.</param>
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public void HandleKeyDown(KeyEventArgs e) |
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{ |
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switch (e.Key) |
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{ |
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case Key.Enter: |
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OnCommit(); |
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e.Handled = true; |
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break; |
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|
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case Key.Up: |
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SelectedIndexDecrement(); |
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e.Handled = true; |
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break; |
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|
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case Key.Down: |
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if ((e.Modifiers & InputModifiers.Alt) == InputModifiers.None) |
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{ |
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SelectedIndexIncrement(); |
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e.Handled = true; |
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} |
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break; |
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|
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case Key.Escape: |
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OnCancel(); |
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e.Handled = true; |
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break; |
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default: |
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break; |
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} |
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} |
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|
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/// <summary>
|
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/// Raises the
|
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/// <see cref="E:Avalonia.Controls.Utils.SelectingItemsControlSelectionAdapter.Commit" />
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/// event.
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/// </summary>
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protected virtual void OnCommit() |
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{ |
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OnCommit(this, new RoutedEventArgs()); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Fires the Commit event.
|
|||
/// </summary>
|
|||
/// <param name="sender">The source object.</param>
|
|||
/// <param name="e">The event data.</param>
|
|||
private void OnCommit(object sender, RoutedEventArgs e) |
|||
{ |
|||
Commit?.Invoke(sender, e); |
|||
|
|||
AfterAdapterAction(); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Raises the
|
|||
/// <see cref="E:Avalonia.Controls.Utils.SelectingItemsControlSelectionAdapter.Cancel" />
|
|||
/// event.
|
|||
/// </summary>
|
|||
protected virtual void OnCancel() |
|||
{ |
|||
OnCancel(this, new RoutedEventArgs()); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Fires the Cancel event.
|
|||
/// </summary>
|
|||
/// <param name="sender">The source object.</param>
|
|||
/// <param name="e">The event data.</param>
|
|||
private void OnCancel(object sender, RoutedEventArgs e) |
|||
{ |
|||
Cancel?.Invoke(sender, e); |
|||
|
|||
AfterAdapterAction(); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Change the selection after the actions are complete.
|
|||
/// </summary>
|
|||
private void AfterAdapterAction() |
|||
{ |
|||
IgnoringSelectionChanged = true; |
|||
if (SelectorControl != null) |
|||
{ |
|||
SelectorControl.SelectedItem = null; |
|||
SelectorControl.SelectedIndex = -1; |
|||
} |
|||
IgnoringSelectionChanged = false; |
|||
} |
|||
} |
|||
} |
|||
@ -0,0 +1,43 @@ |
|||
<Styles xmlns="https://github.com/avaloniaui"> |
|||
<Style Selector="AutoCompleteBox"> |
|||
<Setter Property="Background" Value="{DynamicResource ThemeBackgroundBrush}"/> |
|||
<Setter Property="BorderBrush" Value="{DynamicResource ThemeBorderMidBrush}"/> |
|||
<Setter Property="BorderThickness" Value="{DynamicResource ThemeBorderThickness}"/> |
|||
<Setter Property="Padding" Value="4"/> |
|||
<Setter Property="Template"> |
|||
<ControlTemplate> |
|||
<Panel> |
|||
<TextBox Name="PART_TextBox" |
|||
Background="{TemplateBinding Background}" |
|||
BorderBrush="{TemplateBinding BorderBrush}" |
|||
BorderThickness="{TemplateBinding BorderThickness}" |
|||
Padding="{TemplateBinding Padding}" |
|||
Watermark="{TemplateBinding Watermark}" |
|||
DataValidationErrors.Errors="{TemplateBinding (DataValidationErrors.Errors)}" /> |
|||
|
|||
<Popup Name="PART_Popup" |
|||
MinWidth="{TemplateBinding Bounds.Width}" |
|||
MaxHeight="{TemplateBinding MaxDropDownHeight}" |
|||
PlacementTarget="{TemplateBinding}" |
|||
StaysOpen="False"> |
|||
<Border BorderBrush="{DynamicResource ThemeBorderMidBrush}" |
|||
BorderThickness="1"> |
|||
<ListBox Name="PART_SelectingItemsControl" |
|||
BorderThickness="0" |
|||
Background="{TemplateBinding Background}" |
|||
Foreground="{TemplateBinding Foreground}" |
|||
ItemTemplate="{TemplateBinding ItemTemplate}" |
|||
MemberSelector="{TemplateBinding ValueMemberSelector}" |
|||
ScrollViewer.HorizontalScrollBarVisibility="Auto" |
|||
ScrollViewer.VerticalScrollBarVisibility="Auto" /> |
|||
</Border> |
|||
</Popup> |
|||
</Panel> |
|||
</ControlTemplate> |
|||
</Setter> |
|||
</Style> |
|||
|
|||
<Style Selector="AutoCompleteBox ListBoxItem:pointerover"> |
|||
<Setter Property="Background" Value="#ffd0d0d0"/> |
|||
</Style> |
|||
</Styles> |
|||
File diff suppressed because it is too large
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Reference in new issue