/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="index"></param>
/// <param name="simpleSelector"></param>
public void Insert(int index, DCssSimpleSelector simpleSelector)
{
System.Diagnostics.Debug.Assert(index >= 0 && index <= m_simpleSelectorList.Count);
System.Diagnostics.Debug.Assert(simpleSelector != null);
m_simpleSelectorList.Insert(index, simpleSelector);
}
/////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
internal void TransformCSS(StringBuilder writer)
{
for (int index = 0, count = m_simpleSelectorList.Count; index < count; ++index)
{
DCssSimpleSelector simpleSelector = m_simpleSelectorList[index];
writer.Append(simpleSelector.CSS);
switch (simpleSelector.Combinator)
{
case DCssSimpleSelector.Relation.Descendant:
writer.Append(" ");
break;
case DCssSimpleSelector.Relation.Child:
writer.Append(" > ");
break;
case DCssSimpleSelector.Relation.Sibling:
writer.Append(" + ");
break;
default:
System.Diagnostics.Debug.Assert(false);
break;
}
}
writer.Append("{ ");
for (int index = 0, count = m_properties.Count; index < count; ++index)
{
writer.Append(m_properties[index].CSS + " ");
}
writer.Append("}");
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public DCssSelector ResolveSelector(string input)
{
System.Diagnostics.Debug.Assert(input != null);
DCssSelector selector = new DCssSelector();
string[] selectorList = input.Split(CHtmlUtil.WhiteSpaceCharsArray);
StringBuilder builder = new StringBuilder();
bool combinatorExist = false;
for (int tokenIndex = 0, count = selectorList.Length; tokenIndex < count; ++tokenIndex)
{
string token = selectorList[tokenIndex];
if (token.Equals('+')) // combinator +
{
if (selector.Count != 0 && combinatorExist == false)
{
selector[selector.Count - 1].Combinator = DCssSimpleSelector.Relation.Sibling;
combinatorExist = true;
}
else
{
throw new ParseExeception();
}
}
else if (token.Equals('>')) // combinator >
{
if (selector.Count != 0 && combinatorExist == false)
{
selector[selector.Count - 1].Combinator = DCssSimpleSelector.Relation.Child;
combinatorExist = true;
}
else
{
throw new ParseExeception();
}
}
else
{
DCssSimpleSelector simpleSelector = new DCssSimpleSelector();
builder.Length = 0;
int index = 0;
while (index < token.Length)
{
if (token[index].Equals('#')) // id
{
index += 1;
if (index >= token.Length)
{
throw new ParseExeception();
}
int nextIndex = token.IndexOfAny("#.:[".ToCharArray(), index);
if (nextIndex != -1)
{
simpleSelector.ID = token.Substring(index, nextIndex - index);
index = nextIndex;
}
else
{
simpleSelector.ID = token.Substring(index);
index = token.Length;
}
}
else if (token[index].Equals('.')) // class
{
index += 1;
if (index >= token.Length)
{
throw new ParseExeception();
}
int nextIndex = token.IndexOfAny("#.:[".ToCharArray(), index);
if (nextIndex != -1)
{
simpleSelector.Class = token.Substring(index, nextIndex - index);
index = nextIndex;
}
else
{
simpleSelector.Class = token.Substring(index);
index = token.Length;
}
}
else if (token[index].Equals('[')) // attribute
{
System.Diagnostics.Debug.Assert(false);
}
else if (token[index].Equals(':')) // pseudo-x
{
index += 1;
if (index >= token.Length)
{
throw new ParseExeception();
}
int nextIndex = token.IndexOfAny("#.:[".ToCharArray(), index);
if (nextIndex != -1)
{
simpleSelector.Pseudo = token.Substring(index, nextIndex - index);
index = nextIndex;
}
else
{
simpleSelector.Pseudo = token.Substring(index);
index = token.Length;
}
}
else // element name
{
int nextIndex = token.IndexOfAny("#.[:".ToCharArray(), index);
if (nextIndex != -1)
{
simpleSelector.ElementNames = token.Substring(index, nextIndex - index);
index = nextIndex;
}
else
{
simpleSelector.ElementNames = token.Substring(index);
index = token.Length;
}
}
}
selector.Add(simpleSelector);
combinatorExist = false;
}
}
return(selector);
}
/////////////////////////////////////////////////////////////////////////////////
#region ¤ñ¹ï¾Þ?
/////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="element"></param>
/// <returns></returns>
public bool IsMatching(CHtmlElement element)
{
System.Diagnostics.Debug.Assert(element != null);
System.Diagnostics.Debug.Assert(m_simpleSelectorList.Count > 0);
bool result = false;
DCssSimpleSelector.Relation combinator = DCssSimpleSelector.Relation.Descendant;
int index = m_simpleSelectorList.Count - 1;
DCssSimpleSelector simpleSelector = m_simpleSelectorList[index];
if (simpleSelector.IsMatching(element) == true) // first matching
{
--index;
if (index >= 0)
{
simpleSelector = m_simpleSelectorList[index];
combinator = simpleSelector.Combinator;
switch (combinator)
{
case DCssSimpleSelector.Relation.Child:
case DCssSimpleSelector.Relation.Descendant:
element = element.Parent; // child to parent
break;
case DCssSimpleSelector.Relation.Sibling:
element = element.PreviousSibling as CHtmlElement; // brother
break;
default: System.Diagnostics.Debug.Assert(false); break;
}
}
while (index >= 0 && element != null)
{
simpleSelector = m_simpleSelectorList[index];
if (simpleSelector.IsMatching(element) == true) // simple selector matching
{
--index; // match next simple selector
if (index >= 0)
{
combinator = simpleSelector.Combinator;
switch (combinator)
{
case DCssSimpleSelector.Relation.Child:
case DCssSimpleSelector.Relation.Descendant:
element = element.Parent; // child to parent
break;
case DCssSimpleSelector.Relation.Sibling:
element = element.PreviousSibling as CHtmlElement; // brother
break;
default: System.Diagnostics.Debug.Assert(false); break;
}
}
}
else
{
if (combinator == DCssSimpleSelector.Relation.Descendant)
{
element = element.Parent;// child to parent
}
else if (combinator == DCssSimpleSelector.Relation.Child ||
combinator == DCssSimpleSelector.Relation.Sibling)
{
break;
}
else
{
System.Diagnostics.Debug.Assert(false);
}
}
}
if (index == -1)
{
result = true;
}
}
return(result);
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="simpleSelector"></param>
/// <returns></returns>
public int IndexOf(DCssSimpleSelector simpleSelector)
{
System.Diagnostics.Debug.Assert(simpleSelector != null);
return(m_simpleSelectorList.IndexOf(simpleSelector));
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="simpleSelector"></param>
public void Add(DCssSimpleSelector simpleSelector)
{
System.Diagnostics.Debug.Assert(simpleSelector != null);
m_simpleSelectorList.Add(simpleSelector);
}