public JsExpression GetArgsScript(MethodCallExpression expression, DataContextStack dataContext) { var arguments = (expression.Object == null ? new Expression[0] : new[] { expression.Object }) .Concat(expression.Arguments).Select(a => JavascriptTranslator.CompileToJavascript(a, dataContext, vmMapper)); return(new JsArrayExpression(arguments)); }
public static string GetArgsScript(MethodCallExpression expression, DataContextStack dataContext) { var target = expression.Object == null ? "null" : JavascriptTranslator.CompileToJavascript(expression.Object, dataContext); var arguments = new[] { target }.Concat(expression.Arguments.Select(a => JavascriptTranslator.CompileToJavascript(a, dataContext))); return("[" + String.Join(", ", arguments) + "]"); }
public static string GetArgsScript(MethodCallExpression expression, DataContextStack dataContext, IViewModelSerializationMapper vmMapper) { var target = expression.Object == null ? null : JavascriptTranslator.FormatKnockoutScript(JavascriptTranslator.CompileToJavascript(expression.Object, dataContext, vmMapper), allowDataGlobal: false); var arguments = (target == null ? new string[0] : new[] { target }) .Concat(expression.Arguments.Select(a => JavascriptTranslator.FormatKnockoutScript(JavascriptTranslator.CompileToJavascript(a, dataContext, vmMapper), allowDataGlobal: true))); return("[" + String.Join(", ", arguments) + "]"); }
internal static void RegisterJavascriptTranslations() { JavascriptTranslator.AddPropertyGetterTranslator(typeof(BindingCollectionInfo), nameof(Index), new GenericMethodCompiler(_ => new JsSymbolicParameter(JavascriptTranslator.CurrentIndexParameter))); JavascriptTranslator.AddPropertyGetterTranslator(typeof(BindingCollectionInfo), nameof(IsFirst), new GenericMethodCompiler(_ => new JsBinaryExpression(new JsSymbolicParameter(JavascriptTranslator.CurrentIndexParameter), BinaryOperatorType.Equal, new JsLiteral(0)))); JavascriptTranslator.AddPropertyGetterTranslator(typeof(BindingCollectionInfo), nameof(IsOdd), new GenericMethodCompiler(_ => new JsBinaryExpression(new JsBinaryExpression(new JsSymbolicParameter(JavascriptTranslator.CurrentIndexParameter), BinaryOperatorType.Modulo, new JsLiteral(2)), BinaryOperatorType.Equal, new JsLiteral(1)))); JavascriptTranslator.AddPropertyGetterTranslator(typeof(BindingCollectionInfo), nameof(IsEven), new GenericMethodCompiler(_ => new JsBinaryExpression(new JsBinaryExpression(new JsSymbolicParameter(JavascriptTranslator.CurrentIndexParameter), BinaryOperatorType.Modulo, new JsLiteral(2)), BinaryOperatorType.Equal, new JsLiteral(0)))); }
/// <summary> /// Builds a <see cref="ViewModelValidationError.PropertyPath"/> from a LINQ expression /// </summary> public static string BuildPath <TValidationTarget>(Expression <Func <TValidationTarget, object> > propertyAccessor, DotvvmConfiguration configuration) { var context = DataContextStack.Create(typeof(TValidationTarget)); var js = JavascriptTranslator.CompileToJavascript(propertyAccessor, context, configuration.ServiceLocator.GetService <IViewModelSerializationMapper>()); js.AcceptVisitor(new KnockoutObservableHandlingVisitor(true)); var propertyPathExtractingVisitor = new PropertyPathExtractingVisitor(); js.AcceptVisitor(propertyPathExtractingVisitor); return(propertyPathExtractingVisitor.ExtractedPropertyPath); }
public override string CompileToJs(ResolvedBinding binding, CompiledBindingExpression compiledExpression) { var expression = binding.GetExpression(); var visitor = new ExtractExpressionVisitor(ex => ex.NodeType == ExpressionType.Call); var rootCallback = visitor.Visit(expression); var js = SouldCompileCallback(rootCallback) ? JavascriptTranslator.CompileToJavascript(rootCallback, binding.DataContextTypeStack) : null; foreach (var param in visitor.ParameterOrder) { var callback = js == null ? null : $"function({param.Name}){{{js}}}"; var method = visitor.Replaced[param] as MethodCallExpression; js = CompileMethodCall(method, binding.DataContextTypeStack, callback); } return("var $context = ko.contextFor(this);var sender = this;(function(i_pageArea){with($context){" + js + "}})"); }
public string CompileBinding(string expression, Type[] contexts, Type expectedType) { var context = DataContextStack.Create(contexts.FirstOrDefault() ?? typeof(object), extensionParameters: new BindingExtensionParameter[] { new BindingPageInfoExtensionParameter(), }.Concat(configuration.Markup.DefaultExtensionParameters).ToArray()); for (int i = 1; i < contexts.Length; i++) { context = DataContextStack.Create(contexts[i], context); } var parser = new BindingExpressionBuilder(); var expressionTree = TypeConversion.ImplicitConversion(parser.Parse(expression, context, BindingParserOptions.Create <ValueBindingExpression>()), expectedType, true, true); var jsExpression = new JsParenthesizedExpression(configuration.ServiceProvider.GetRequiredService <JavascriptTranslator>().CompileToJavascript(expressionTree, context)); jsExpression.AcceptVisitor(new KnockoutObservableHandlingVisitor(true)); JsTemporaryVariableResolver.ResolveVariables(jsExpression); return(JavascriptTranslator.FormatKnockoutScript(jsExpression.Expression)); }
private static JsExpression TransformOptionValueToExpression(DotvvmBindableObject handler, object optionValue) { switch (optionValue) { case IValueBinding binding: return(new JsIdentifierExpression( JavascriptTranslator.FormatKnockoutScript(binding.GetParametrizedKnockoutExpression(handler, unwrapped: true), new ParametrizedCode("c"), new ParametrizedCode("d")))); case IStaticValueBinding staticValueBinding: return(new JsLiteral(staticValueBinding.Evaluate(handler))); case JsExpression expression: return(expression.Clone()); case IBinding _: throw new ArgumentException("Option value can contains only IValueBinding or IStaticValueBinding. Other bindings are not supported."); default: return(new JsLiteral(optionValue)); } }
public KnockoutJsExpressionBindingProperty CompileToJavascript(ParsedExpressionBindingProperty expression, DataContextStack dataContext) { return(new KnockoutJsExpressionBindingProperty( JavascriptTranslator.CompileToJavascript(expression.Expression, dataContext, vmMapper).ApplyAction(a => a.Freeze()))); }
public StaticCommandBindingCompiler(JavascriptTranslator javascriptTranslator, IViewModelProtector protector) { this.protector = protector; this.javascriptTranslator = javascriptTranslator; }
public new string CompileToJavascript(ResolvedBinding binding, CompiledBindingExpression compiledExpression, DotvvmConfiguration config) { var vmMapper = config.ServiceLocator.GetService <IViewModelSerializationMapper>(); var expression = binding.GetExpression(); var visitor = new ExtractExpressionVisitor(ex => ex.NodeType == ExpressionType.Call); var rootCallback = visitor.Visit(expression); var js = SouldCompileCallback(rootCallback) ? "resultPromise.resolve(" + JavascriptTranslator.FormatKnockoutScript(JavascriptTranslator.CompileToJavascript(rootCallback, binding.DataContextTypeStack, vmMapper), allowDataGlobal: false) + ")" : null; foreach (var param in visitor.ParameterOrder.Reverse <ParameterExpression>()) { if (js == null) { js = $"resultPromise.resolve({param.Name})"; } var callback = $"function({param.Name}){{{js}}}"; var method = visitor.Replaced[param] as MethodCallExpression; js = CompileMethodCall(method, binding.DataContextTypeStack, vmMapper, callback); } return("var $context = ko.contextFor(this);var sender = this;var resultPromise = new DotvvmPromise();(function(i_pageArea){with($context){" + js + "}})"); }
private static string GenerateHandlerOptions(DotvvmBindableObject handler, Dictionary <string, object> options) { JsExpression optionsExpr = new JsObjectExpression( options.Where(o => o.Value != null).Select(o => new JsObjectProperty(o.Key, o.Value is IValueBinding b ? (JsExpression) new JsIdentifierExpression( JavascriptTranslator.FormatKnockoutScript(b.GetParametrizedKnockoutExpression(handler, unwrapped: true), new ParametrizedCode("c"), new ParametrizedCode("d"))) : new JsLiteral(o.Value is IBinding ? ((IStaticValueBinding)o.Value).Evaluate(handler) : o.Value))) ); if (options.Any(o => o.Value is IValueBinding)) { optionsExpr = new JsFunctionExpression( new[] { new JsIdentifier("c"), new JsIdentifier("d") }, new JsBlockStatement(new JsReturnStatement(optionsExpr)) ); } optionsExpr.FixParenthesis(); var script = new JsFormattingVisitor().ApplyAction(optionsExpr.AcceptVisitor).GetParameterlessResult(); return(script); }
public JsExpression CompileToJavascript(DataContextStack dataContext, Expression expression) { var currentContextVariable = new JsTemporaryVariableParameter(new JsIdentifierExpression("ko").Member("contextFor").Invoke(new JsSymbolicParameter(CommandBindingExpression.SenderElementParameter))); var resultPromiseVariable = new JsTemporaryVariableParameter(new JsNewExpression("DotvvmPromise")); var senderVariable = new JsTemporaryVariableParameter(new JsSymbolicParameter(CommandBindingExpression.SenderElementParameter)); var visitor = new ExtractExpressionVisitor(ex => ex.NodeType == ExpressionType.Call); var rootCallback = visitor.Visit(expression); var js = SouldCompileCallback(rootCallback) ? new JsSymbolicParameter(resultPromiseVariable).Member("resolve").Invoke(JavascriptTranslator.CompileToJavascript(rootCallback, dataContext, vmMapper)) : null; foreach (var param in visitor.ParameterOrder.Reverse <ParameterExpression>()) { js = js ?? new JsSymbolicParameter(resultPromiseVariable).Member("resolve").Invoke(new JsIdentifierExpression(param.Name)); var callback = new JsFunctionExpression(new[] { new JsIdentifier(param.Name) }, new JsBlockStatement(new JsExpressionStatement(js))); var method = visitor.Replaced[param] as MethodCallExpression; js = CompileMethodCall(method, dataContext, callback); } foreach (var sp in js.Descendants.OfType <JsSymbolicParameter>()) { if (sp.Symbol == JavascriptTranslator.KnockoutContextParameter) { sp.Symbol = currentContextVariable; } else if (sp.Symbol == JavascriptTranslator.KnockoutViewModelParameter) { sp.ReplaceWith(new JsSymbolicParameter(currentContextVariable).Member("$data")); } else if (sp.Symbol == CommandBindingExpression.SenderElementParameter) { sp.Symbol = senderVariable; } } return(new JsBinaryExpression(js, BinaryOperatorType.Sequence, new JsSymbolicParameter(resultPromiseVariable))); }
internal static void RegisterJavascriptTranslations() { JavascriptTranslator.AddPropertyGetterTranslator(typeof(BindingPageInfo), nameof(EvaluatingOnServer), new StringJsMethodCompiler("false")); JavascriptTranslator.AddPropertyGetterTranslator(typeof(BindingPageInfo), nameof(EvaluatingOnClient), new StringJsMethodCompiler("true")); JavascriptTranslator.AddPropertyGetterTranslator(typeof(BindingPageInfo), nameof(IsPostbackRunning), new StringJsMethodCompiler("dotvvm.isPostbackRunning()")); }
private static void RegisterJsCompilables() { JavascriptTranslator.AddMethodTranslator(typeof(MyProfile), nameof(MyProfile.GetClassForId), new StringJsMethodCompiler("(({0}.ActiveTabId() == {1}) ? \"active\" : \"\")")); }