internal override AttributeBinding Evaluate(AjaxPage page)
{
var path = Path;
string sourcePath;
if (Parameters.TryGetValue("source", out sourcePath) && sourcePath.Length > 0)
{
path = sourcePath + "." + path;
}
var result = page.EvaluatePath(path);
if (result.IsValid)
{
if (result.Value == null)
{
string nullValue;
if (Parameters.TryGetValue("nullValue", out nullValue))
{
result.Value = nullValue;
}
}
else
{
string format;
if (Parameters.TryGetValue("format", out format) && !string.IsNullOrEmpty(format) && result.Value is IFormattable)
{
result.Value = ((IFormattable)result.Value).ToString(format, null);
}
else
{
string transformText;
if (transform == null && Parameters.TryGetValue("transform", out transformText) && transformText.Length > 0)
{
transform = Transform.Compile(transformText);
}
if (result.IsValid && transform != null)
{
IEnumerable transformed;
result.IsValid = transform.TryExecute(page, (IEnumerable)result.Value, out transformed);
result.Value = result.IsValid ? transformed : null;
}
}
}
}
return(new AttributeBinding(Attribute, result));
}
internal override AttributeBinding Evaluate(AjaxPage page)
{
// Evaluate the binding path
var result = page.EvaluatePath(Path);
// Invalid result
if (result.Property == null)
{
result.IsValid = false;
}
// # syntax
else if (Extension == "#")
{
string format = null;
Parameters.TryGetValue("format", out format);
string value;
result.IsValid = Adapter.TryGetDisplayValue(result.Property, format, result.Value, out value);
result.Value = value;
}
// @ syntax
else if (Extension == "@")
{
if (string.IsNullOrEmpty(Path))
{
if (!(page.Context.DataItem is Adapter))
{
throw new ApplicationException("No path was specified for the \"@\" markup extension, and the source is not an adapter.");
}
result.Value = page.Context.DataItem;
}
else
{
ExoWeb.OnBeforeCreateAdapter(this, result.Source, result.Property);
result = new BindingResult()
{
Value = new Adapter(result, Parameters),
IsValid = result.IsValid,
Property = result.Property,
Source = result.Source
};
}
}
return(new AttributeBinding(Attribute, result));
}
internal override AttributeBinding Evaluate(AjaxPage page)
{
var path = Path;
string sourcePath;
if (Parameters.TryGetValue("source", out sourcePath) && sourcePath.Length > 0)
path = sourcePath + "." + path;
var result = page.EvaluatePath(path);
if (result.IsValid)
{
if (result.Value == null)
{
string nullValue;
if (Parameters.TryGetValue("nullValue", out nullValue))
result.Value = nullValue;
}
else
{
string format;
if (Parameters.TryGetValue("format", out format) && !string.IsNullOrEmpty(format) && result.Value is IFormattable)
result.Value = ((IFormattable)result.Value).ToString(format, null);
else
{
string transformText;
if (transform == null && Parameters.TryGetValue("transform", out transformText) && transformText.Length > 0)
transform = Transform.Compile(transformText);
if (result.IsValid && transform != null)
{
IEnumerable transformed;
result.IsValid = transform.TryExecute(page, (IEnumerable)result.Value, out transformed);
result.Value = result.IsValid ? transformed : null;
}
}
}
}
return new AttributeBinding(Attribute, result);
}
internal override AttributeBinding Evaluate(AjaxPage page)
{
// Evaluate the binding path
var result = page.EvaluatePath(Path);
// Invalid result
if (result.Property == null)
result.IsValid = false;
// # syntax
else if (Extension == "#")
{
string format = null;
Parameters.TryGetValue("format", out format);
string value;
result.IsValid = Adapter.TryGetDisplayValue(result.Property, format, result.Value, out value);
result.Value = value;
}
// @ syntax
else if (Extension == "@")
{
if (string.IsNullOrEmpty(Path))
{
if (!(page.Context.DataItem is Adapter))
throw new ApplicationException("No path was specified for the \"@\" markup extension, and the source is not an adapter.");
result.Value = page.Context.DataItem;
}
else
{
var args = ExoWeb.OnBeforeCreateAdapter(this, result.Source, result.Property);
result = new BindingResult()
{
Value = new Adapter(result, args != null ? args.ModifiedParameters ?? Parameters : Parameters),
IsValid = result.IsValid,
Property = result.Property,
Source = result.Source
};
}
}
return new AttributeBinding(Attribute, result);
}
