Max Katz
3 years ago
committed by
GitHub
GitHub
27 changed files with 506 additions and 189 deletions
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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 Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers; |
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using XamlX.Ast; |
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using XamlX.IL.Emitters; |
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|
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namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.GroupTransformers; |
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#nullable enable |
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internal class XamlMergeResourceGroupTransformer : IXamlAstGroupTransformer |
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{ |
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public IXamlAstNode Transform(AstGroupTransformationContext context, IXamlAstNode node) |
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{ |
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var resourceDictionaryType = context.GetAvaloniaTypes().ResourceDictionary; |
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if (node is not XamlObjectInitializationNode resourceDictionaryNode |
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|| resourceDictionaryNode.Type != resourceDictionaryType |
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|| resourceDictionaryNode.Manipulation is not XamlManipulationGroupNode resourceDictionaryManipulation) |
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{ |
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return node; |
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} |
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var mergeResourceIncludeType = context.GetAvaloniaTypes().MergeResourceInclude; |
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var mergeSourceNodes = new List<XamlPropertyAssignmentNode>(); |
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var hasAnyNonMergedResource = false; |
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foreach (var manipulationNode in resourceDictionaryManipulation.Children.ToArray()) |
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{ |
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void ProcessXamlPropertyAssignmentNode(XamlManipulationGroupNode parent, XamlPropertyAssignmentNode assignmentNode) |
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{ |
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if (assignmentNode.Property.Name == "MergedDictionaries" |
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&& assignmentNode.Values.FirstOrDefault() is XamlValueWithManipulationNode valueNode) |
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{ |
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if (valueNode.Type.GetClrType() == mergeResourceIncludeType) |
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{ |
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if (valueNode.Manipulation is XamlObjectInitializationNode objectInitialization |
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&& objectInitialization.Manipulation is XamlPropertyAssignmentNode sourceAssignmentNode) |
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{ |
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parent.Children.Remove(assignmentNode); |
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mergeSourceNodes.Add(sourceAssignmentNode); |
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} |
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else |
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{ |
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throw new XamlDocumentParseException(context.CurrentDocument, |
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"Invalid MergeResourceInclude node found. Make sure that Source property is set.", |
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valueNode); |
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} |
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} |
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else |
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{ |
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hasAnyNonMergedResource = true; |
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} |
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if (hasAnyNonMergedResource && mergeSourceNodes.Any()) |
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{ |
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throw new XamlDocumentParseException(context.CurrentDocument, |
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"Mix of MergeResourceInclude and other dictionaries inside of the ResourceDictionary.MergedDictionaries is not allowed", |
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valueNode); |
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} |
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} |
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} |
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if (manipulationNode is XamlPropertyAssignmentNode singleValueAssignment) |
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{ |
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ProcessXamlPropertyAssignmentNode(resourceDictionaryManipulation, singleValueAssignment); |
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} |
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else if (manipulationNode is XamlManipulationGroupNode groupNodeValues) |
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{ |
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foreach (var groupNodeValue in groupNodeValues.Children.OfType<XamlPropertyAssignmentNode>().ToArray()) |
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{ |
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ProcessXamlPropertyAssignmentNode(groupNodeValues, groupNodeValue); |
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} |
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} |
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} |
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var manipulationGroup = new XamlManipulationGroupNode(node, new List<IXamlAstManipulationNode>()); |
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foreach (var sourceNode in mergeSourceNodes) |
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{ |
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var (originalAssetPath, propertyNode) = |
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AvaloniaXamlIncludeTransformer.ResolveSourceFromXamlInclude(context, "MergeResourceInclude", sourceNode, true); |
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if (originalAssetPath is null) |
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{ |
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return node; |
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} |
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var targetDocument = context.Documents.FirstOrDefault(d => |
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string.Equals(d.Uri, originalAssetPath, StringComparison.InvariantCultureIgnoreCase)) |
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?.XamlDocument.Root as XamlValueWithManipulationNode; |
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if (targetDocument is null) |
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{ |
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return context.ParseError( |
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$"Node MergeResourceInclude is unable to resolve \"{originalAssetPath}\" path.", propertyNode, node); |
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} |
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var singleRootObject = ((XamlManipulationGroupNode)targetDocument.Manipulation) |
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.Children.OfType<XamlObjectInitializationNode>().Single(); |
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if (singleRootObject.Type != resourceDictionaryType) |
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{ |
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return context.ParseError( |
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$"MergeResourceInclude can only include another ResourceDictionary", propertyNode, node); |
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} |
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manipulationGroup.Children.Add(singleRootObject.Manipulation); |
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} |
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if (manipulationGroup.Children.Any()) |
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{ |
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// MergedDictionaries are read first, so we need ot inject our merged values in the beginning.
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resourceDictionaryManipulation.Children.Insert(0, manipulationGroup); |
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} |
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return node; |
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} |
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} |
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@ -0,0 +1,26 @@ |
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using System; |
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using System.Diagnostics.CodeAnalysis; |
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using Avalonia.Controls; |
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#nullable enable |
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namespace Avalonia.Markup.Xaml.Styling; |
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/// <summary>
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/// Loads a resource dictionary from a specified URL.
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/// </summary>
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/// <remarks>
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/// If used from the XAML code, it is merged into the parent dictionary in the compile time.
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/// When used in runtime, this type behaves like <see cref="ResourceInclude"/>.
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/// </remarks>
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[RequiresUnreferencedCode(TrimmingMessages.StyleResourceIncludeRequiresUnreferenceCodeMessage)] |
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public class MergeResourceInclude : ResourceInclude |
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{ |
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public MergeResourceInclude(Uri? baseUri) : base(baseUri) |
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{ |
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} |
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public MergeResourceInclude(IServiceProvider serviceProvider) : base(serviceProvider) |
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{ |
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} |
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} |
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@ -0,0 +1,124 @@ |
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using System; |
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using System.Xml; |
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using Avalonia.Controls; |
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using Avalonia.Media; |
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using Avalonia.Styling; |
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using Xunit; |
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namespace Avalonia.Markup.Xaml.UnitTests.Xaml; |
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public class MergeResourceIncludeTests |
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{ |
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[Fact] |
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public void MergeResourceInclude_Works_With_Single_Resource() |
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{ |
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var documents = new[] |
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{ |
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new RuntimeXamlLoaderDocument(new Uri("avares://Tests/Resources.xaml"), @"
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<ResourceDictionary xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<SolidColorBrush x:Key='brush2'>Red</SolidColorBrush> |
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</ResourceDictionary>"),
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new RuntimeXamlLoaderDocument(@"
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<UserControl xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<UserControl.Resources> |
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<ResourceDictionary> |
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<SolidColorBrush x:Key='brush1'>Blue</SolidColorBrush> |
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<ResourceDictionary.MergedDictionaries> |
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<MergeResourceInclude Source='avares://Tests/Resources.xaml'/>
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</ResourceDictionary.MergedDictionaries> |
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</ResourceDictionary> |
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</UserControl.Resources> |
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</UserControl>")
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}; |
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var objects = AvaloniaRuntimeXamlLoader.LoadGroup(documents); |
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var contentControl = Assert.IsType<UserControl>(objects[1]); |
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var resources = Assert.IsType<ResourceDictionary>(contentControl.Resources); |
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Assert.Empty(resources.MergedDictionaries); |
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var initialResource = (ISolidColorBrush)resources["brush1"]!; |
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Assert.Equal(Colors.Blue, initialResource.Color); |
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var mergedResource = (ISolidColorBrush)resources["brush2"]!; |
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Assert.Equal(Colors.Red, mergedResource.Color); |
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} |
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[Fact] |
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public void Mixing_MergeResourceInclude_And_ResourceInclude_Is_Not_Allowed() |
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{ |
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var documents = new[] |
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{ |
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new RuntimeXamlLoaderDocument(new Uri("avares://Tests/Resources1.xaml"), @"
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<ResourceDictionary xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<SolidColorBrush x:Key='brush1'>Red</SolidColorBrush> |
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</ResourceDictionary>"),
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new RuntimeXamlLoaderDocument(new Uri("avares://Tests/Resources2.xaml"), @"
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<ResourceDictionary xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<SolidColorBrush x:Key='brush2'>Blue</SolidColorBrush> |
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</ResourceDictionary>"),
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new RuntimeXamlLoaderDocument(@"
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<ResourceDictionary xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<ResourceDictionary.MergedDictionaries> |
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<MergeResourceInclude Source='avares://Tests/Resources1.xaml'/>
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<ResourceInclude Source='avares://Tests/Resources2.xaml'/>
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</ResourceDictionary.MergedDictionaries> |
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</ResourceDictionary>")
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}; |
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Assert.ThrowsAny<XmlException>(() => AvaloniaRuntimeXamlLoader.LoadGroup(documents)); |
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} |
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[Fact] |
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public void MergeResourceInclude_Works_With_Multiple_Resources() |
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{ |
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var documents = new[] |
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{ |
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new RuntimeXamlLoaderDocument(new Uri("avares://Tests/Resources1.xaml"), @"
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<ResourceDictionary xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<SolidColorBrush x:Key='brush1'>Red</SolidColorBrush> |
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<SolidColorBrush x:Key='brush2'>Blue</SolidColorBrush> |
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</ResourceDictionary>"),
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new RuntimeXamlLoaderDocument(new Uri("avares://Tests/Resources2.xaml"), @"
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<ResourceDictionary xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<SolidColorBrush x:Key='brush4'>Yellow</SolidColorBrush> |
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<ResourceDictionary.MergedDictionaries> |
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<MergeResourceInclude Source='avares://Tests/Resources1_2.xaml'/>
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</ResourceDictionary.MergedDictionaries> |
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</ResourceDictionary>"),
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new RuntimeXamlLoaderDocument(@"
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<ResourceDictionary xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<ResourceDictionary.MergedDictionaries> |
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<MergeResourceInclude Source='avares://Tests/Resources1.xaml'/>
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<MergeResourceInclude Source='avares://Tests/Resources2.xaml'/>
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</ResourceDictionary.MergedDictionaries> |
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<SolidColorBrush x:Key='brush5'>Black</SolidColorBrush> |
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<SolidColorBrush x:Key='brush6'>White</SolidColorBrush> |
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</ResourceDictionary>"),
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new RuntimeXamlLoaderDocument(new Uri("avares://Tests/Resources1_2.xaml"), @"
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<ResourceDictionary xmlns='https://github.com/avaloniaui'
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xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>
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<SolidColorBrush x:Key='brush3'>Green</SolidColorBrush> |
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</ResourceDictionary>"),
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}; |
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var objects = AvaloniaRuntimeXamlLoader.LoadGroup(documents); |
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var resources = Assert.IsType<ResourceDictionary>(objects[2]); |
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Assert.Empty(resources.MergedDictionaries); |
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Assert.Equal(Colors.Red, ((ISolidColorBrush)resources["brush1"]!).Color); |
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Assert.Equal(Colors.Blue, ((ISolidColorBrush)resources["brush2"]!).Color); |
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Assert.Equal(Colors.Green, ((ISolidColorBrush)resources["brush3"]!).Color); |
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Assert.Equal(Colors.Yellow, ((ISolidColorBrush)resources["brush4"]!).Color); |
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Assert.Equal(Colors.Black, ((ISolidColorBrush)resources["brush5"]!).Color); |
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Assert.Equal(Colors.White, ((ISolidColorBrush)resources["brush6"]!).Color); |
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} |
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} |
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