public void TextElementFontSizePropertyAddOwner()
{
var testCode = @"
namespace RoslynSandbox
{
using System.Windows;
using System.Windows.Documents;
public class FooControl : FrameworkElement
{
public static readonly DependencyProperty FontSizeProperty = TextElement.FontSizeProperty.AddOwner(typeof(FooControl));
public double FontSize
{
get => (double)this.GetValue(FontSizeProperty);
set => this.SetValue(FontSizeProperty, value);
}
}
}";
var syntaxTree = CSharpSyntaxTree.ParseText(testCode);
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, RoslynAssert.MetadataReferences);
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var declaration = syntaxTree.FindFieldDeclaration("FontSizeProperty");
var symbol = semanticModel.GetDeclaredSymbolSafe(declaration, CancellationToken.None);
Assert.AreEqual(true, BackingFieldOrProperty.TryCreateForDependencyProperty(symbol, out var fieldOrProperty));
Assert.AreEqual(true, DependencyProperty.TryGetRegisteredName(fieldOrProperty, semanticModel, CancellationToken.None, out var name));
Assert.AreEqual("FontSize", name);
}
public static void DependencyPropertyBackingField(string argument)
{
var code = @"
namespace N
{
using System.Windows;
using System.Windows.Controls;
public class FooControl : Control
{
public static readonly DependencyProperty BarProperty = DependencyProperty.Register(
nameof(Bar),
typeof(int),
typeof(FooControl),
new PropertyMetadata(default(int)));
public int Bar
{
get { return (int)this.GetValue(BarProperty); }
set { this.SetValue(BarProperty, value); }
}
}
}".AssertReplace("nameof(Bar)", argument);
var syntaxTree = CSharpSyntaxTree.ParseText(code);
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var declaration = syntaxTree.FindFieldDeclaration("BarProperty");
var symbol = semanticModel.GetDeclaredSymbolSafe(declaration, CancellationToken.None);
Assert.AreEqual(true, BackingFieldOrProperty.TryCreateForDependencyProperty(symbol, out var fieldOrProperty));
Assert.AreEqual(true, DependencyProperty.TryGetRegisteredName(fieldOrProperty, semanticModel, CancellationToken.None, out var arg, out var name));
Assert.AreEqual(argument, arg.ToString());
Assert.AreEqual("Bar", name);
}
public void DependencyPropertyBackingProperty(string nameCode)
{
var testCode = @"
namespace RoslynSandbox
{
using System.Windows;
using System.Windows.Controls;
public class FooControl : Control
{
public static DependencyProperty BarProperty { get; } = DependencyProperty.Register(
nameof(Bar),
typeof(int),
typeof(FooControl),
new PropertyMetadata(default(int)));
public int Bar
{
get { return (int)this.GetValue(BarProperty); }
set { this.SetValue(BarProperty, value); }
}
}
}".AssertReplace("nameof(Bar)", nameCode);
var syntaxTree = CSharpSyntaxTree.ParseText(testCode);
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, RoslynAssert.MetadataReferences);
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var declaration = syntaxTree.FindPropertyDeclaration("BarProperty");
var symbol = semanticModel.GetDeclaredSymbol(declaration, CancellationToken.None);
Assert.AreEqual(true, BackingFieldOrProperty.TryCreateForDependencyProperty(symbol, out var fieldOrProperty));
Assert.AreEqual(true, DependencyProperty.TryGetRegisteredName(fieldOrProperty, semanticModel, CancellationToken.None, out var name));
Assert.AreEqual("Bar", name);
}
public static void BorderBorderThicknessPropertyAddOwner()
{
var code = @"
namespace N
{
using System.Windows;
using System.Windows.Controls;
public class FooControl : FrameworkElement
{
public static readonly DependencyProperty BorderThicknessProperty = Border.BorderThicknessProperty.AddOwner(typeof(FooControl));
public Size BorderThickness
{
get => (Size)GetValue(BorderThicknessProperty);
set => SetValue(BorderThicknessProperty, value);
}
}
}";
var syntaxTree = CSharpSyntaxTree.ParseText(code);
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var declaration = syntaxTree.FindFieldDeclaration("BorderThicknessProperty");
var symbol = semanticModel.GetDeclaredSymbolSafe(declaration, CancellationToken.None);
Assert.AreEqual(true, BackingFieldOrProperty.TryCreateForDependencyProperty(symbol, out var fieldOrProperty));
Assert.AreEqual(true, DependencyProperty.TryGetRegisteredName(fieldOrProperty, semanticModel, CancellationToken.None, out var arg, out var name));
Assert.AreEqual(null, arg);
Assert.AreEqual("BorderThickness", name);
}