@ -1,4 +1,5 @@
using System ;
using System.Collections ;
using System.Collections.Generic ;
using System.Collections.ObjectModel ;
using System.ComponentModel ;
@ -7,6 +8,7 @@ using System.Linq;
using System.Reactive.Subjects ;
using System.Runtime.CompilerServices ;
using System.Threading.Tasks ;
using Avalonia.Collections ;
using Avalonia.Controls ;
using Avalonia.Controls.Presenters ;
using Avalonia.Controls.Templates ;
@ -550,6 +552,98 @@ namespace Avalonia.Markup.Xaml.UnitTests.MarkupExtensions
Assert . Equal ( dataContext . ListProperty [ 0 ] , ( string ) ( ( ContentPresenter ) target . Presenter . Panel . Children [ 0 ] ) . Content ) ;
}
}
[Fact]
public void InfersDataTemplateTypeFromParentDataGridItemsType ( )
{
using ( UnitTestApplication . Start ( TestServices . StyledWindow ) )
{
var window = ( Window ) AvaloniaRuntimeXamlLoader . Load ( @ "
< Window xmlns = ' https : //github.com/avaloniaui'
xmlns : x = ' http : //schemas.microsoft.com/winfx/2006/xaml'
xmlns : local = ' clr - namespace : Avalonia . Markup . Xaml . UnitTests . MarkupExtensions ; assembly = Avalonia . Markup . Xaml . UnitTests '
x : DataType = ' local : TestDataContext ' >
< local : DataGridLikeControl Items = ' { CompiledBinding ListProperty } ' Name = ' target ' >
< local : DataGridLikeControl . Columns >
< local : DataGridLikeColumn Binding = ' { CompiledBinding Length } ' >
< local : DataGridLikeColumn . Template >
< DataTemplate >
< TextBlock Text = ' { CompiledBinding Length } ' / >
< / DataTemplate >
< / local : DataGridLikeColumn . Template >
< / local : DataGridLikeColumn >
< / local : DataGridLikeControl . Columns >
< / local : DataGridLikeControl >
< / Window > ");
var target = window . FindControl < DataGridLikeControl > ( "target" ) ;
var column = target ! . Columns . Single ( ) ;
var dataContext = new TestDataContext ( ) ;
dataContext . ListProperty . Add ( "Test" ) ;
window . DataContext = dataContext ;
window . ApplyTemplate ( ) ;
target . ApplyTemplate ( ) ;
// Assert DataGridLikeColumn.Binding data type.
var compiledPath = ( ( CompiledBindingExtension ) column . Binding ) . Path ;
var node = Assert . IsType < PropertyElement > ( Assert . Single ( compiledPath . Elements ) ) ;
Assert . Equal ( typeof ( int ) , node . Property . PropertyType ) ;
// Assert DataGridLikeColumn.Template data type by evaluating the template.
var firstItem = dataContext . ListProperty [ 0 ] ;
var textBlockFromTemplate = ( TextBlock ) column . Template . Build ( firstItem ) ;
textBlockFromTemplate . DataContext = firstItem ;
Assert . Equal ( firstItem . Length . ToString ( ) , textBlockFromTemplate . Text ) ;
}
}
[Fact]
public void ExplicitDataTypeStillWorksOnDataGridLikeControls ( )
{
using ( UnitTestApplication . Start ( TestServices . StyledWindow ) )
{
var window = ( Window ) AvaloniaRuntimeXamlLoader . Load ( @ "
< Window xmlns = ' https : //github.com/avaloniaui'
xmlns : x = ' http : //schemas.microsoft.com/winfx/2006/xaml'
xmlns : local = ' clr - namespace : Avalonia . Markup . Xaml . UnitTests . MarkupExtensions ; assembly = Avalonia . Markup . Xaml . UnitTests '
x : DataType = ' local : TestDataContext ' >
< local : DataGridLikeControl Name = ' target ' >
< local : DataGridLikeControl . Columns >
< local : DataGridLikeColumn Binding = ' { CompiledBinding Length } ' x : DataType = ' x : String ' >
< local : DataGridLikeColumn . Template >
< DataTemplate x : DataType = ' x : String ' >
< TextBlock Text = ' { CompiledBinding Length } ' / >
< / DataTemplate >
< / local : DataGridLikeColumn . Template >
< / local : DataGridLikeColumn >
< / local : DataGridLikeControl . Columns >
< / local : DataGridLikeControl >
< / Window > ");
var target = window . FindControl < DataGridLikeControl > ( "target" ) ;
var column = target ! . Columns . Single ( ) ;
var dataContext = new TestDataContext ( ) ;
dataContext . ListProperty . Add ( "Test" ) ;
target . Items = dataContext . ListProperty ;
window . ApplyTemplate ( ) ;
target . ApplyTemplate ( ) ;
// Assert DataGridLikeColumn.Binding data type.
var compiledPath = ( ( CompiledBindingExtension ) column . Binding ) . Path ;
var node = Assert . IsType < PropertyElement > ( Assert . Single ( compiledPath . Elements ) ) ;
Assert . Equal ( typeof ( int ) , node . Property . PropertyType ) ;
// Assert DataGridLikeColumn.Template data type by evaluating the template.
var firstItem = dataContext . ListProperty [ 0 ] ;
var textBlockFromTemplate = ( TextBlock ) column . Template . Build ( firstItem ) ;
textBlockFromTemplate . DataContext = firstItem ;
Assert . Equal ( firstItem . Length . ToString ( ) , textBlockFromTemplate . Text ) ;
}
}
[Fact]
public void ThrowsOnUninferrableDataTemplateInItemsControlWithoutItemsBinding ( )
@ -1835,4 +1929,29 @@ namespace Avalonia.Markup.Xaml.UnitTests.MarkupExtensions
{
[AssignBinding] public IBinding X { get ; set ; }
}
public class DataGridLikeControl : Control
{
public static readonly DirectProperty < DataGridLikeControl , IEnumerable ? > ItemsProperty =
ItemsControl . ItemsProperty . AddOwner < DataGridLikeControl > ( o = > o . Items , ( o , v ) = > o . Items = v ) ;
private IEnumerable _ items ;
public IEnumerable Items
{
get { return _ items ; }
set { SetAndRaise ( ItemsProperty , ref _ items , value ) ; }
}
public AvaloniaList < DataGridLikeColumn > Columns { get ; } = new ( ) ;
}
public class DataGridLikeColumn
{
[AssignBinding]
[InheritDataTypeFromItems(nameof(DataGridLikeControl.Items), AncestorType = typeof(DataGridLikeControl))]
public IBinding Binding { get ; set ; }
[InheritDataTypeFromItems(nameof(DataGridLikeControl.Items), AncestorType = typeof(DataGridLikeControl))]
public IDataTemplate Template { get ; set ; }
}
}
Max Katz
4 years ago
GitHub