Add _dataPager.Load extension parameter

riganti · Nov 11, 2023 · e26b66b · e26b66b
1 parent 52ead0a
commit e26b66b
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Showing 3 changed files with 67 additions and 2 deletions.
diff --git a/src/Framework/Framework/Binding/HelperNamespace/DataPagerApi.cs b/src/Framework/Framework/Binding/HelperNamespace/DataPagerApi.cs
@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using DotVVM.Core.Storage;
+using DotVVM.Framework.Compilation.ControlTree;
+using DotVVM.Framework.Compilation.ControlTree.Resolved;
+using DotVVM.Framework.Compilation.Javascript.Ast;
+using DotVVM.Framework.Controls;
+
+namespace DotVVM.Framework.Binding.HelperNamespace
+{
+    public class DataPagerApi
+    {
+        public void Load() => throw new NotSupportedException("The _dataPager.Load method is not supported on the server, please use a staticCommand to invoke it.");
+
+
+
+
+        public class DataPagerExtensionParameter : BindingExtensionParameter
+        {
+            public DataPagerExtensionParameter(string identifier, bool inherit = true) : base(identifier, ResolvedTypeDescriptor.Create(typeof(DataPagerApi)), inherit)
+            {
+            }
+
+            public override JsExpression GetJsTranslation(JsExpression dataContext) =>
+                new JsObjectExpression();
+            public override Expression GetServerEquivalent(Expression controlParameter) =>
+                Expression.New(typeof(DataPagerApi));
+        }
+
+        public class AddParameterDataContextChangeAttribute: DataContextChangeAttribute
+        {
+            public AddParameterDataContextChangeAttribute(string name = "_dataPager", int order = 0)
+            {
+                Name = name;
+                Order = order;
+            }
+
+            public string Name { get; }
+            public override int Order { get; }
+
+            public override ITypeDescriptor? GetChildDataContextType(ITypeDescriptor dataContext, IDataContextStack controlContextStack, IAbstractControl control, IPropertyDescriptor? property = null) =>
+                dataContext;
+            public override Type? GetChildDataContextType(Type dataContext, DataContextStack controlContextStack, DotvvmBindableObject control, DotvvmProperty? property = null) => dataContext;
+
+            public override IEnumerable<BindingExtensionParameter> GetExtensionParameters(ITypeDescriptor dataContext)
+            {
+                return new BindingExtensionParameter[] {
+                    new DataPagerExtensionParameter(Name)
+                };
+            }
+        }
+    }
+}
diff --git a/src/Framework/Framework/Compilation/Javascript/Ast/JsAstHelpers.cs b/src/Framework/Framework/Compilation/Javascript/Ast/JsAstHelpers.cs
@@ -46,6 +46,11 @@ public static JsBlockStatement AsBlock(this JsStatement statement) =>
         public static JsBlockStatement AsBlock(this IEnumerable<JsStatement> statements) =>
             new JsBlockStatement(statements);
 
+        public static JsExpression AsSequenceOperators(this IEnumerable<JsExpression?> expressions) =>
+            expressions.OfType<JsExpression>().Aggregate((a, b) => new JsBinaryExpression(a, BinaryOperatorType.Sequence, b));
+        public static JsExpression AsSequenceOperators(params JsExpression?[] expressions) =>
+            expressions.AsSequenceOperators();
+
         public static JsArrayExpression ArrayExpression(this IEnumerable<JsExpression> items) =>
             new JsArrayExpression(items);
 

diff --git a/src/Framework/Framework/Compilation/Javascript/JavascriptTranslatableMethodCollection.cs b/src/Framework/Framework/Compilation/Javascript/JavascriptTranslatableMethodCollection.cs
@@ -811,14 +811,19 @@ JsExpression wrapInRound(JsExpression a) =>
 
         private void AddDataSetOptionsTranslations()
         {
+            var dataSetHelper = new JsSymbolicParameter(JavascriptTranslator.KnockoutContextParameter).Member("$gridViewDataSetHelper");
             // GridViewDataSetBindingProvider
             AddMethodTranslator(() => GridViewDataSetBindingProvider.DataSetClientSideLoad(null!), new GenericMethodCompiler(args =>
-                new JsIdentifierExpression("dotvvm").Member("dataSet").Member("loadDataSet").Invoke(args[1].WithAnnotation(ShouldBeObservableAnnotation.Instance), new JsSymbolicParameter(JavascriptTranslator.KnockoutContextParameter).Member("$gridViewDataSetHelper").Member("loadDataSet")).WithAnnotation(new ResultIsPromiseAnnotation(e => e))));
+                new JsIdentifierExpression("dotvvm").Member("dataSet").Member("loadDataSet").Invoke(args[1].WithAnnotation(ShouldBeObservableAnnotation.Instance), dataSetHelper.Clone().Member("loadDataSet")).WithAnnotation(new ResultIsPromiseAnnotation(e => e))));
 
             AddMethodTranslator(() => GridViewDataSetBindingProvider.GetCurrentGridDataSet<Generic.DataSet>(), new GenericMethodCompiler(args =>
-                new JsSymbolicParameter(JavascriptTranslator.KnockoutContextParameter).Member("$gridViewDataSetHelper").Member("dataSet")
+                dataSetHelper.Clone().Member("dataSet")
             ));
 
+            // _dataPager.Load()
+            AddMethodTranslator(() => default(DataPagerApi)!.Load(), new GenericMethodCompiler(args =>
+                dataSetHelper.Member("loadNextPage").Invoke().WithAnnotation(new ResultIsPromiseAnnotation(e => e))));
+
             // PagingOptions
             AddMethodTranslator(() => default(PagingOptions)!.GoToFirstPage(),new GenericMethodCompiler(args =>
                 new JsIdentifierExpression("dotvvm").Member("dataSet").Member("translations").Member("PagingOptions").Member("goToFirstPage")