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)));
}
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 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 + "}})");
}
