Max Katz
4 years ago
committed by
GitHub
GitHub
13 changed files with 439 additions and 73 deletions
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using System.Collections.Generic; |
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using System.Linq; |
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using Avalonia.Data; |
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using XamlX.Ast; |
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using XamlX.Transform; |
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namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers |
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{ |
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/// <summary>
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/// Transforms property assignments within ControlTemplates to use Style priority where possible.
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/// </summary>
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class AvaloniaXamlIlControlTemplatePriorityTransformer : IXamlAstTransformer |
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{ |
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public IXamlAstNode Transform(AstTransformationContext context, IXamlAstNode node) |
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{ |
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var bindingPriorityType = context.GetAvaloniaTypes().BindingPriority; |
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// The node is a candidate for transformation if:
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// - It's a property assignment to an Avalonia property
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// - There's a ControlTemplate ancestor
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// - The property has a single value
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if (node is XamlPropertyAssignmentNode prop && |
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prop.Property is XamlIlAvaloniaProperty avaloniaProperty && |
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context.ParentNodes().Any(IsControlTemplate) && |
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prop.Values.Count == 1) |
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{ |
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var priorityValueSetters = new List<IXamlPropertySetter>(); |
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// Iterate through the possible setters, trying to find a setter on the property
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// which has a BindingPriority parameter followed by the parameter of the existing
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// setter.
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foreach (var setter in prop.PossibleSetters) |
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{ |
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var s = avaloniaProperty.Setters.FirstOrDefault(x => |
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x.Parameters[0] == bindingPriorityType && |
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x.Parameters[1] == setter.Parameters[0]); |
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if (s != null) |
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priorityValueSetters.Add(s); |
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} |
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// If any BindingPriority setters were found, use those.
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if (priorityValueSetters.Count > 0) |
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{ |
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prop.PossibleSetters = priorityValueSetters; |
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prop.Values.Insert(0, new XamlConstantNode(node, bindingPriorityType, (int)BindingPriority.TemplatedParent)); |
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} |
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} |
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return node; |
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} |
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private static bool IsControlTemplate(IXamlAstNode node) |
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{ |
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return node is AvaloniaXamlIlTargetTypeMetadataNode tt && |
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tt.ScopeType == AvaloniaXamlIlTargetTypeMetadataNode.ScopeTypes.ControlTemplate; |
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} |
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} |
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} |
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using System.Collections.Generic; |
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namespace Avalonia.Markup.Xaml.XamlIl.Runtime |
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{ |
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public interface IAvaloniaXamlIlControlTemplateProvider |
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{ |
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} |
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} |
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@ -0,0 +1,273 @@ |
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using Avalonia.Controls; |
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using Avalonia.Controls.Presenters; |
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using Avalonia.Data; |
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using Avalonia.Diagnostics; |
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using Avalonia.Markup.Xaml.Templates; |
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using Avalonia.Media; |
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using Avalonia.UnitTests; |
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using Xunit; |
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namespace Avalonia.Markup.Xaml.UnitTests.Xaml |
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{ |
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public class ControlTemplateTests : XamlTestBase |
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{ |
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[Fact] |
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public void Inline_ControlTemplate_Styled_Values_Are_Set_With_Style_Priority() |
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{ |
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using (UnitTestApplication.Start(TestServices.StyledWindow)) |
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{ |
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var xaml = @"
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<Window xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<Button> |
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<Button.Template> |
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<ControlTemplate> |
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<ContentPresenter Name='PART_ContentPresenter' |
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Background='Red'/> |
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</ControlTemplate> |
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</Button.Template> |
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</Button> |
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</Window>";
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var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml); |
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var button = (Button)window.Content; |
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window.ApplyTemplate(); |
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button.ApplyTemplate(); |
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var presenter = (ContentPresenter)button.Presenter; |
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Assert.Equal(Brushes.Red, presenter.Background); |
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var diagnostic = presenter.GetDiagnostic(Button.BackgroundProperty); |
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Assert.Equal(BindingPriority.TemplatedParent, diagnostic.Priority); |
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} |
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} |
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[Fact] |
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public void Style_ControlTemplate_Styled_Values_Are_Set_With_Style_Priority() |
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{ |
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using (UnitTestApplication.Start(TestServices.StyledWindow)) |
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{ |
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var xaml = @"
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<Window xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<Window.Styles> |
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<Style Selector='Button'> |
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<Setter Property='Template'> |
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<ControlTemplate> |
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<ContentPresenter Name='PART_ContentPresenter' |
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Background='Red'/> |
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</ControlTemplate> |
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</Setter> |
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</Style> |
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</Window.Styles> |
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<Button/> |
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</Window>";
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var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml); |
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var button = (Button)window.Content; |
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window.ApplyTemplate(); |
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button.ApplyTemplate(); |
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var presenter = (ContentPresenter)button.Presenter; |
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Assert.Equal(Brushes.Red, presenter.Background); |
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var diagnostic = presenter.GetDiagnostic(Button.BackgroundProperty); |
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Assert.Equal(BindingPriority.TemplatedParent, diagnostic.Priority); |
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} |
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} |
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[Fact] |
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public void ControlTemplate_Attached_Values_Are_Set_With_Style_Priority() |
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{ |
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using (UnitTestApplication.Start(TestServices.StyledWindow)) |
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{ |
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var xaml = @"
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<Window xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<Button> |
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<Button.Template> |
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<ControlTemplate> |
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<ContentPresenter Name='PART_ContentPresenter' |
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DockPanel.Dock='Top'/> |
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</ControlTemplate> |
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</Button.Template> |
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</Button> |
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</Window>";
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var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml); |
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var button = (Button)window.Content; |
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window.ApplyTemplate(); |
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button.ApplyTemplate(); |
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var presenter = (ContentPresenter)button.Presenter; |
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Assert.Equal(Dock.Top, DockPanel.GetDock(presenter)); |
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var diagnostic = presenter.GetDiagnostic(DockPanel.DockProperty); |
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Assert.Equal(BindingPriority.TemplatedParent, diagnostic.Priority); |
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} |
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} |
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[Fact] |
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public void ControlTemplate_StaticResources_Are_Set_With_Style_Priority() |
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{ |
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using (UnitTestApplication.Start(TestServices.StyledWindow)) |
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{ |
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var xaml = @"
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<Window xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<Window.Resources> |
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<SolidColorBrush x:Key='red'>Red</SolidColorBrush> |
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</Window.Resources> |
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<Button Content='Foo'> |
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<Button.Template> |
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<ControlTemplate> |
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<ContentPresenter Name='PART_ContentPresenter' |
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Background='{StaticResource red}'/> |
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</ControlTemplate> |
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</Button.Template> |
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</Button> |
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</Window>";
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var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml); |
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var button = (Button)window.Content; |
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window.ApplyTemplate(); |
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button.ApplyTemplate(); |
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var presenter = (ContentPresenter)button.Presenter; |
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Assert.Equal(Brushes.Red, presenter.Background); |
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var diagnostic = presenter.GetDiagnostic(Button.BackgroundProperty); |
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Assert.Equal(BindingPriority.TemplatedParent, diagnostic.Priority); |
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} |
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} |
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[Fact] |
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public void ControlTemplate_DynamicResources_Are_Set_With_Style_Priority() |
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{ |
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using (UnitTestApplication.Start(TestServices.StyledWindow)) |
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{ |
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var xaml = @"
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<Window xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<Window.Resources> |
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<SolidColorBrush x:Key='red'>Red</SolidColorBrush> |
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</Window.Resources> |
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<Button Content='Foo'> |
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<Button.Template> |
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<ControlTemplate> |
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<ContentPresenter Name='PART_ContentPresenter' |
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Background='{DynamicResource red}'/> |
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</ControlTemplate> |
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</Button.Template> |
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</Button> |
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</Window>";
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var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml); |
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var button = (Button)window.Content; |
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window.ApplyTemplate(); |
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button.ApplyTemplate(); |
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var presenter = (ContentPresenter)button.Presenter; |
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Assert.Equal(Brushes.Red, presenter.Background); |
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var diagnostic = presenter.GetDiagnostic(Button.BackgroundProperty); |
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Assert.Equal(BindingPriority.TemplatedParent, diagnostic.Priority); |
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} |
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} |
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[Fact] |
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public void ControlTemplate_TemplateBindings_Are_Set_With_TemplatedParent_Priority() |
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{ |
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using (UnitTestApplication.Start(TestServices.StyledWindow)) |
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{ |
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var xaml = @"
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<Window xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<Button Content='Foo'> |
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<Button.Template> |
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<ControlTemplate> |
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<ContentPresenter Name='PART_ContentPresenter' |
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Content='{TemplateBinding Content}'/> |
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</ControlTemplate> |
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</Button.Template> |
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</Button> |
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</Window>";
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var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml); |
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var button = (Button)window.Content; |
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window.ApplyTemplate(); |
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button.ApplyTemplate(); |
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var presenter = (ContentPresenter)button.Presenter; |
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Assert.Equal("Foo", presenter.Content); |
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var diagnostic = presenter.GetDiagnostic(ContentPresenter.ContentProperty); |
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Assert.Equal(BindingPriority.TemplatedParent, diagnostic.Priority); |
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} |
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} |
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[Fact] |
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public void ControlTemplate_With_Nested_Child_Is_Operational() |
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{ |
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var xaml = @"
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<ControlTemplate xmlns='https://github.com/avaloniaui'>
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<ContentControl Name='parent'> |
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<ContentControl Name='child' /> |
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</ContentControl> |
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</ControlTemplate> |
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";
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var template = AvaloniaRuntimeXamlLoader.Parse<ControlTemplate>(xaml); |
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var parent = (ContentControl)template.Build(new ContentControl()).Control; |
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Assert.Equal("parent", parent.Name); |
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var child = parent.Content as ContentControl; |
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Assert.NotNull(child); |
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Assert.Equal("child", child.Name); |
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} |
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[Fact] |
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public void ControlTemplate_With_TargetType_Is_Operational() |
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{ |
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var xaml = @"
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<ControlTemplate xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
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TargetType='{x:Type ContentControl}'> |
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<ContentPresenter Content='{TemplateBinding Content}' /> |
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</ControlTemplate> |
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";
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var template = AvaloniaRuntimeXamlLoader.Parse<ControlTemplate>(xaml); |
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Assert.Equal(typeof(ContentControl), template.TargetType); |
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Assert.IsType(typeof(ContentPresenter), template.Build(new ContentControl()).Control); |
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} |
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[Fact] |
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public void ControlTemplate_With_Panel_Children_Are_Added() |
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{ |
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var xaml = @"
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<ControlTemplate xmlns='https://github.com/avaloniaui'>
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<Panel Name='panel'> |
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<ContentControl Name='Foo' /> |
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<ContentControl Name='Bar' /> |
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</Panel> |
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</ControlTemplate> |
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";
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var template = AvaloniaRuntimeXamlLoader.Parse<ControlTemplate>(xaml); |
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var panel = (Panel)template.Build(new ContentControl()).Control; |
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Assert.Equal(2, panel.Children.Count); |
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var foo = panel.Children[0]; |
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var bar = panel.Children[1]; |
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Assert.Equal("Foo", foo.Name); |
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Assert.Equal("Bar", bar.Name); |
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} |
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} |
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} |
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