/// <inheritdoc cref="ElementSelector"/>
public bool CanBeCompared(XmlElement controlElement,
XmlElement testElement)
{
XmlElement currentControl = controlElement;
XmlElement currentTest = testElement;
// match on element names only for leading levels
for (int currentLevel = 0; currentLevel <= levels - 2; currentLevel++)
{
if (!ElementSelectors.ByName(currentControl, currentTest) ||
!currentControl.HasChildNodes ||
!currentTest.HasChildNodes)
{
return(false);
}
XmlNode n1 = GetFirstEligibleChild(currentControl);
XmlNode n2 = GetFirstEligibleChild(currentTest);
if (n1 is XmlElement && n2 is XmlElement)
{
currentControl = n1 as XmlElement;
currentTest = n2 as XmlElement;
}
else
{
return(false);
}
}
// finally compare the level containing the text child node
return(ElementSelectors.ByNameAndText(currentControl,
currentTest));
}
/// <inheritdoc cref="ElementSelector"/>
public static bool CanBeCompared(XmlElement controlElement,
XmlElement testElement)
{
if (!ElementSelectors.ByNameAndText(controlElement, testElement))
{
return(false);
}
XmlNodeList controlChildren = controlElement.ChildNodes;
XmlNodeList testChildren = testElement.ChildNodes;
int controlLen = controlChildren.Count;
int testLen = testChildren.Count;
int controlIndex, testIndex;
for (controlIndex = testIndex = 0;
controlIndex < controlLen && testIndex < testLen;
)
{
// find next non-text child nodes
XmlNode c = FindNonText(controlChildren, ref controlIndex, controlLen);
if (IsText(c))
{
break;
}
XmlNode t = FindNonText(testChildren, ref testIndex, testLen);
if (IsText(t))
{
break;
}
// different types of children make elements
// non-comparable
if (c.NodeType != t.NodeType)
{
return(false);
}
// recurse for child elements
if (c is XmlElement &&
!CanBeCompared(c as XmlElement, t as XmlElement))
{
return(false);
}
controlIndex++;
testIndex++;
}
// child lists exhausted?
if (controlIndex < controlLen)
{
FindNonText(controlChildren, ref controlIndex, controlLen);
// some non-Text children remained
if (controlIndex < controlLen)
{
return(false);
}
}
if (testIndex < testLen)
{
FindNonText(testChildren, ref testIndex, testLen);
// some non-Text children remained
if (testIndex < testLen)
{
return(false);
}
}
return(true);
}
