public ValueBindingExpression(CompiledBindingExpression.BindingDelegate func, string javascript = null, CompiledBindingExpression.BindingUpdateDelegate updateFunc = null)
: base(new CompiledBindingExpression()
{
Delegate = func,
Javascript = javascript,
UpdateDelegate = updateFunc
})
{
}
/// <summary>
/// Initializes a new instance of the <see cref="BindingExpression"/> class.
/// </summary>
public BindingExpression(CompiledBindingExpression compiledBinding) : this()
{
OriginalString = compiledBinding.OriginalString;
Javascript = compiledBinding.Javascript;
ExpressionTree = compiledBinding.Expression;
Delegate = compiledBinding.Delegate;
UpdateDelegate = compiledBinding.UpdateDelegate;
BindingId = compiledBinding.Id;
ActionFilters = compiledBinding.ActionFilters;
}
/// <summary>
/// Initializes a new instance of the <see cref="BindingExpression"/> class.
/// </summary>
public BindingExpression(CompiledBindingExpression compiledBinding) : this()
{
OriginalString = compiledBinding.OriginalString;
Javascript = compiledBinding.Javascript;
ExpressionTree = compiledBinding.Expression;
Delegate = compiledBinding.Delegate;
UpdateDelegate = compiledBinding.UpdateDelegate;
BindingId = compiledBinding.Id;
ActionFilters = compiledBinding.ActionFilters;
}
public override string CompileToJavascript(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) ? "resultPromise.resolve(" + JavascriptTranslator.CompileToJavascript(rootCallback, binding.DataContextTypeStack) + ")" : 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, callback);
}
return "var $context = ko.contextFor(this);var sender = this;var resultPromise = new DotvvmPromise();(function(i_pageArea){with($context){" + js + "}})";
}
public virtual string CompileToJavascript(ResolvedBinding binding, CompiledBindingExpression expression)
{
var javascript = JavascriptTranslator.CompileToJavascript(binding.GetExpression(), binding.DataContextTypeStack);
if (javascript == "$data")
{
javascript = "$rawData";
}
else if (javascript.StartsWith("$data.", StringComparison.Ordinal))
{
javascript = javascript.Substring("$data.".Length);
}
// do not produce try/eval on single properties
if (javascript.Contains(".") || javascript.Contains("("))
{
return "dotvvm.evaluator.tryEval(function(){return " + javascript + "})";
}
else
{
return javascript;
}
}
public ControlCommandBindingExpression(CompiledBindingExpression expression)
: base(expression)
{
}
public StaticCommandBindingExpression(CompiledBindingExpression expression)
: base(expression)
{
}
public ControlCommandBindingExpression(CompiledBindingExpression expression)
: base(expression)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ValueBindingExpression"/> class.
/// </summary>
public ValueBindingExpression(CompiledBindingExpression expression)
: base(expression)
{
}
public override string CompileToJavascript(ResolvedBinding binding, CompiledBindingExpression expression)
{
return $"dotvvm.postbackScript({ JsonConvert.SerializeObject(expression.Id) })";
}
public ControlPropertyBindingExpression(CompiledBindingExpression expression)
: base(expression)
{
}
public CommandBindingExpression(CompiledBindingExpression.BindingDelegate command, string id)
: base(new CompiledBindingExpression { Delegate = command, Id = id, Javascript = $"dotvvm.postbackScript('{ id }')" })
{ }
/// <summary>
/// Initializes a new instance of the <see cref="ResourceBindingExpression"/> class.
/// </summary>
public ResourceBindingExpression(CompiledBindingExpression expression) : base(expression)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ValueBindingExpression"/> class.
/// </summary>
public ValueBindingExpression(CompiledBindingExpression expression)
: base(expression)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ResourceBindingExpression"/> class.
/// </summary>
public ResourceBindingExpression(CompiledBindingExpression expression) : base(expression)
{
}
public StaticCommandBindingExpression(CompiledBindingExpression expression)
: base(expression)
{ }
public ControlPropertyBindingExpression(CompiledBindingExpression expression)
: base(expression)
{
}