public override BindingExpressionInfo ParseExpression(string expression, BindingExpressionContext context)
{
// TODO: Fix error messages not to refer to web:bind but expression builder prefix/ns instead
var uri = new Uri(expression, UriKind.RelativeOrAbsolute);
if (!uri.IsAbsoluteUri)
{
uri = new Uri(String.Concat(SessionModule.Prefix, ":", uri.OriginalString), UriKind.Absolute);
}
var validValues = new List <string>()
{
bind.it
};
string path = uri.AbsolutePath;
string nodeName = context.NodeName ?? context.BoundNode.Name;
if (!validValues.Contains(path))
{
throw new ArgumentException(String.Format(CultureInfo.InvariantCulture, "The value of the '{0}' attribute must be one of these values: {1}.", nodeName, String.Join(", ", validValues.ToArray())));
}
if (context.AffectsXsltInitiation)
{
throw new ArgumentException("Cannot bind to session when the parameter affects XSLT initiation.");
}
BasePageParser pageParser = context.Parser as BasePageParser;
if (path == bind.it && pageParser != null && pageParser.EnableSessionState == PagesEnableSessionState.False)
{
throw new ArgumentException(
String.Format(CultureInfo.InvariantCulture, "Cannot bind to {0} because session state is disabled for this page. Try setting enable-session-state=\"true\" on the page processing instruction.", bind.it)
);
}
NameValueCollection query = (uri.Query.Length > 1) ?
HttpUtility.ParseQueryString(uri.Query.Replace(';', '&')) :
new NameValueCollection();
var exprInfo = new BindingExpressionInfo(expression)
{
ParsedObject = uri
};
if (query["name"] != null)
{
exprInfo.ParsedValues["name"] = query["name"];
query.Remove("name");
}
else
{
XPathNavigator nav = context.BoundNode.Clone();
nav.MoveToParent();
if (nav.NodeType == XPathNodeType.Element &&
nav.LocalName == "param" &&
nav.NamespaceURI == WellKnownNamespaces.XSLT)
{
exprInfo.ParsedValues["name"] = nav.GetAttribute("name", "");
}
}
switch (path)
{
case bind.it:
exprInfo.ParsedValues["remove"] = GetBooleanOrDefault(query["remove"]);
query.Remove("remove");
break;
default:
if (query["remove"] != null)
{
throw new ArgumentException(
String.Format(CultureInfo.InvariantCulture, "The remove option is not valid for {0}.", path)
);
}
break;
}
foreach (string key in query.AllKeys)
{
exprInfo.ParsedValues.Add(key, query[key]);
}
return(exprInfo);
}
protected BasePageCodeDomTreeGenerator(BasePageParser parser)
{
this.parser = parser;
}
public override BindingExpressionInfo ParseExpression(string expression, BindingExpressionContext context)
{
// TODO: Fix error messages not to refer to web:bind but expression builder prefix/ns instead
var uri = new Uri(expression, UriKind.RelativeOrAbsolute);
if (!uri.IsAbsoluteUri)
{
uri = new Uri(String.Concat(RequestModule.Prefix, ":", uri.OriginalString), UriKind.Absolute);
}
var validValues = new List <string>()
{
bind.query, bind.cookie, bind.form,
bind.header, bind.http_method
};
string path = uri.AbsolutePath;
string nodeName = context.NodeName ?? context.BoundNode.Name;
if (!validValues.Contains(path))
{
throw new ArgumentException(String.Format(CultureInfo.InvariantCulture, "The value of the '{0}' attribute must be one of these values: {1}.", nodeName, String.Join(", ", validValues.ToArray())));
}
BasePageParser pageParser = context.Parser as BasePageParser;
NameValueCollection query = (uri.Query.Length > 1) ?
HttpUtility.ParseQueryString(uri.Query.Replace(';', '&')) :
new NameValueCollection();
var exprInfo = new BindingExpressionInfo(expression)
{
ParsedObject = uri
};
if (query["name"] != null)
{
exprInfo.ParsedValues["name"] = query["name"];
query.Remove("name");
}
else
{
XPathNavigator nav = context.BoundNode.Clone();
nav.MoveToParent();
if (nav.NodeType == XPathNodeType.Element &&
nav.LocalName == "param" &&
nav.NamespaceURI == WellKnownNamespaces.XSLT)
{
exprInfo.ParsedValues["name"] = nav.GetAttribute("name", "");
}
}
if (query["accept"] != null)
{
switch (path)
{
case bind.http_method:
throw new ArgumentException(
String.Format(CultureInfo.InvariantCulture, "When '{0}' is set to '{1}' use the '{2}' attribute instead of the 'accept' option.", XsltPageParser.page.bind_initial_template, bind.http_method, XsltPageParser.page.accept_verbs)
);
}
exprInfo.ParsedValues["accept"] = query["accept"].Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
query.Remove("accept");
}
else
{
if (context.AffectsXsltInitiation)
{
if (path != bind.http_method)
{
throw new ArgumentException(
String.Format(CultureInfo.InvariantCulture, "The 'accept' option is required for '{0}'. Try this: {1}?accept=[comma-separated template names]", XsltPageParser.page.bind_initial_template, path)
);
}
else if (pageParser != null && pageParser.AcceptVerbs.Count == 0)
{
throw new ArgumentException(
String.Format(CultureInfo.InvariantCulture, "The '{0}' attribute is required when '{1}' is set to '{2}'.", XsltPageParser.page.accept_verbs, XsltPageParser.page.bind_initial_template, path)
);
}
}
}
switch (path)
{
case bind.cookie:
exprInfo.ParsedValues["remove"] = GetBooleanOrDefault(query["remove"]);
query.Remove("remove");
break;
default:
if (query["remove"] != null)
{
throw new ArgumentException(
String.Format(CultureInfo.InvariantCulture, "The remove option is not valid for {0}.", path)
);
}
break;
}
foreach (string key in query.AllKeys)
{
exprInfo.ParsedValues.Add(key, query[key]);
}
return(exprInfo);
}
