public static Node GetPropertyValueNode(this string propertyAccessor)
{
string objectName = propertyAccessor.GetObjectName();
var conditionNode = new ConditionNode(string.Format("{0}!=null", objectName));
conditionNode.Nodes.Add(new ExpressionNode(propertyAccessor));
return conditionNode;
}
public static Node GetCreateUriSnippet(this string entity, bool isType)
{
if (isType)
{
entity = "typeof(" + entity + ")";
return new ExpressionNode(entity + ".CreateUri()");
}
var nullCheck = new ConditionNode(entity.GetIsNotNullExpression());
nullCheck.Nodes.Add(new ExpressionNode(entity + ".CreateUri()"));
return nullCheck;
}
public static Node GetSelectedSnippet(this string propertyAccessor, string currentSelectedState, string optionValue)
{
string propertyNullTest = propertyAccessor.GetObjectName().GetIsNotNullExpression();
string currentSelectedValueTest = string.Format(@"(""{0}""!="""")", currentSelectedState);
string propertyValueTest = string.Format("({0}==\"{1}\")", propertyAccessor, optionValue);
// argh
// if ((propertyNullTest)&&(propertyValueTest))||(currentSelectedValueTest))
string conidtion = string.Format("({0}&&{1})||{2}",
propertyNullTest, propertyValueTest, currentSelectedValueTest);
var node = new ConditionNode(conidtion);
node.Nodes.Add(new TextNode("true"));
return node;
}
private void AddCheckedAttribute(ElementNode elementNode, AttributeNode valueNode)
{
if (valueNode != null)
{
string entity = valueNode.Value.Split('.').First();
string code = string.Format("({0}!= null)&&({1})", entity, valueNode.Value);
ConditionNode conditionNode = new ConditionNode(code)
{
Nodes = new List<Node>()
{
new TextNode("true")
}
};
elementNode.Attributes.Add(new AttributeNode("checked",
new List<Node>{conditionNode}
));
}
}
private static void MovePriorNodesUnderCondition(ConditionNode condition, ICollection<Node> priorNodes)
{
while (priorNodes.Count != 0)
{
var priorNode = priorNodes.Last();
priorNodes.Remove(priorNode);
if (!(priorNode is TextNode))
{
condition.Nodes.Insert(0, priorNode);
continue;
}
// for text, extend back to and include the last whitespace
var priorText = ((TextNode)priorNode).Text;
var finalPieceIndex = priorText.LastIndexOfAny(new[] { ' ', '\t', '\r', '\n' }) + 1;
if (finalPieceIndex == 0)
{
condition.Nodes.Insert(0, priorNode);
continue;
}
while (finalPieceIndex != 0 && char.IsWhiteSpace(priorText[finalPieceIndex - 1]))
--finalPieceIndex;
condition.Nodes.Insert(0, new TextNode(priorText.Substring(finalPieceIndex)) { OriginalNode = priorNode });
if (finalPieceIndex != 0)
{
priorNodes.Add(new TextNode(priorText.Substring(0, finalPieceIndex)) { OriginalNode = priorNode });
}
return;
}
}
protected override void Visit(ConditionNode conditionNode)
{
var conditionChunk = new ConditionalChunk
{
Condition = conditionNode.Code,
Type = ConditionalType.If,
Position = Locate(conditionNode)
};
Chunks.Add(conditionChunk);
if (_sendAttributeOnce != null)
conditionChunk.Body.Add(_sendAttributeOnce);
if (_sendAttributeIncrement != null)
conditionChunk.Body.Add(_sendAttributeIncrement);
using (new Frame(this, conditionChunk.Body))
{
Accept(conditionNode.Nodes);
}
}
protected abstract void Visit(ConditionNode node);
protected override void Visit(ConditionNode node)
{
throw new System.NotImplementedException();
}
private void Transform(ElementNode node, IList<Node> body)
{
AttributeNode forAttribute = node.GetAttribute("for");
AttributeNode forType = node.GetAttribute("fortype");
AttributeNode forProperty = node.GetAttribute("forproperty");
if(forAttribute!=null)
{
// put in as content property
node.Attributes.Remove(forAttribute);
node.RemoveAttributesByName("name");
node.RemoveAttributesByName("value");
var nameNode = new ExpressionNode(forAttribute.Value.GetPropertyNameSnippet());
var valueNode = new ConditionNode("resource!=null")
{
Nodes = new List<Node>()
{
new ExpressionNode(forAttribute.Value)
}
};
SetNodeNameAndValue(node, valueNode, nameNode, body, forAttribute);
}
else if(forType!=null)
{
if(forProperty==null)
{
throw new Exception("Must have both a forProperty attribute if using the forType attribute.");
}
node.Attributes.Remove(forType);
node.Attributes.Remove(forProperty);
node.RemoveAttributesByName("name");
SetNodeNameAndValue(node, null, new TextNode(string.Concat(forType.Value, ".", forProperty.Value)), body, forAttribute);
}
}
private void GivenAnExpressionNode(ConditionNode node)
{
Context.Target = new SparkConditionNodeWrapper(node);
}
