private bool AddTerm(Term value)
{
var added = true;
if (_isFraction)
{
if (_terms.Length > 0)
{
value = new PrimitiveTerm(UnitType.Unknown, _terms[_terms.Length - 1] + "/" + value);
}
_terms.SetLastTerm(value);
_isFraction = false;
}
else if (_functionBuffers.Count > 0)
{
_functionBuffers.Peek().TermList.Add(value);
}
else if (_terms.Length == 0)
{
_terms.AddTerm(value);
}
else if (_parsingContext == ParsingContext.InSingleValue)
{
_terms.AddTerm(value);
}
else
{
added = false;
}
return(added);
}
public GenericFunction(string name, IEnumerable<Term> arguments)
{
Name = name;
var list = new TermList();
foreach (var term in arguments)
{
list.AddTerm(term);
}
Arguments = list;
}
public static IEnumerable<Property> Expand(this Property style, bool leftToRight)
{
Dictionary<string, Property> children;
PrimitiveTerm prim;
Term current;
TermList list;
IList<Term> terms;
switch(style.Name.ToLowerInvariant())
{
case "background":
children = new Dictionary<string, Property>()
{
{"background-color", new Property("background-color") { Term = new InitialTerm() }},
{"background-image", new Property("background-image") { Term = new InitialTerm() }},
{"background-repeat", new Property("background-repeat") { Term = new InitialTerm() }},
{"background-position", new Property("background-position") { Term = new InitialTerm() }}
};
foreach (var term in GetEnumerable(style.Term))
{
if (term is HtmlColor)
{
children["background-color"].Term = term;
}
else
{
prim = term as PrimitiveTerm;
if (prim != null)
{
if (prim.PrimitiveType == UnitType.Uri)
{
children["background-image"].Term = term;
}
else if (prim.PrimitiveType == UnitType.Ident)
{
switch (prim.Value.ToString())
{
case "repeat-x":
case "repeat-y":
case "repeat":
case "space":
case "round":
case "no-repeat":
current = children["background-repeat"].Term;
list = current as TermList;
if (list != null)
{
list.AddTerm(prim);
}
else if (current is InitialTerm)
{
children["background-repeat"].Term = prim;
}
else
{
list = new TermList();
list.AddTerm(current);
list.AddTerm(prim);
children["background-repeat"].Term = list;
}
break;
}
}
}
}
}
foreach (var val in children.Values) yield return val;
break;
case "font":
children = new Dictionary<string, Property>()
{
{"font-style", new Property("font-style") { Term = new InitialTerm() }},
{"font-weight", new Property("font-weight") { Term = new InitialTerm() }},
{"font-size", new Property("font-size") { Term = new InitialTerm() }},
{"line-height", new Property("line-height") { Term = new InitialTerm() }},
{"font-family", new Property("font-family") { Term = new InitialTerm() }}
};
foreach (var term in GetEnumerable(style.Term))
{
prim = term as PrimitiveTerm;
if (prim != null)
{
if (prim.PrimitiveType == UnitType.Number)
{
switch (prim.Value.ToString())
{
case "100":
case "200":
case "300":
case "400":
case "500":
case "600":
case "700":
case "800":
case "900":
children["font-weight"].Term = term;
break;
default:
children["line-height"].Term = term;
break;
}
}
else if (prim.PrimitiveType == UnitType.Ident)
{
switch (prim.Value.ToString())
{
case "italic":
case "oblique":
children["font-style"].Term = term;
break;
case "bold":
case "bolder":
case "lighter":
children["font-weight"].Term = term;
break;
default:
list = term as TermList;
if (list != null)
{
list.AddTerm(prim);
}
else if (term is InitialTerm)
{
children["font-family"].Term = prim;
}
else
{
list = new TermList();
list.AddTerm(term);
list.AddTerm(prim);
children["font-family"].Term = list;
}
break;
}
}
else
{
children["font-size"].Term = term;
}
}
}
foreach (var val in children.Values) yield return val;
break;
case "border":
children = new Dictionary<string, Property>()
{
{"border-width", new Property("border-width") { Term = new InitialTerm() }},
{"border-style", new Property("border-style") { Term = new InitialTerm() }},
{"border-color", new Property("border-color") { Term = new InitialTerm() }},
};
foreach (var term in GetEnumerable(style.Term))
{
if (term is HtmlColor)
{
children["border-color"].Term = term;
}
else
{
prim = term as PrimitiveTerm;
if (prim != null)
{
if (prim.PrimitiveType == UnitType.Ident)
{
children["border-style"].Term = term;
}
else
{
children["border-width"].Term = term;
}
}
}
}
foreach (var val in children.Values) yield return val;
break;
case "margin":
terms = GetEnumerable(style.Term).ToList();
switch (terms.Count)
{
case 1:
yield return new Property("margin-top") { Term = terms[0] };
yield return new Property("margin-right") { Term = terms[0] };
yield return new Property("margin-bottom") { Term = terms[0] };
yield return new Property("margin-left") { Term = terms[0] };
break;
case 2:
yield return new Property("margin-top") { Term = terms[0] };
yield return new Property("margin-right") { Term = terms[1] };
yield return new Property("margin-bottom") { Term = terms[0] };
yield return new Property("margin-left") { Term = terms[1] };
break;
case 3:
yield return new Property("margin-top") { Term = terms[0] };
yield return new Property("margin-right") { Term = terms[1] };
yield return new Property("margin-bottom") { Term = terms[2] };
yield return new Property("margin-left") { Term = terms[1] };
break;
case 4:
yield return new Property("margin-top") { Term = terms[0] };
yield return new Property("margin-right") { Term = terms[1] };
yield return new Property("margin-bottom") { Term = terms[2] };
yield return new Property("margin-left") { Term = terms[3] };
break;
default:
throw new InvalidOperationException();
}
break;
case "padding":
terms = GetEnumerable(style.Term).ToList();
switch (terms.Count)
{
case 1:
yield return new Property("padding-top") { Term = terms[0] };
yield return new Property("padding-right") { Term = terms[0] };
yield return new Property("padding-bottom") { Term = terms[0] };
yield return new Property("padding-left") { Term = terms[0] };
break;
case 2:
yield return new Property("padding-top") { Term = terms[0] };
yield return new Property("padding-right") { Term = terms[1] };
yield return new Property("padding-bottom") { Term = terms[0] };
yield return new Property("padding-left") { Term = terms[1] };
break;
case 3:
yield return new Property("padding-top") { Term = terms[0] };
yield return new Property("padding-right") { Term = terms[1] };
yield return new Property("padding-bottom") { Term = terms[2] };
yield return new Property("padding-left") { Term = terms[1] };
break;
case 4:
yield return new Property("padding-top") { Term = terms[0] };
yield return new Property("padding-right") { Term = terms[1] };
yield return new Property("padding-bottom") { Term = terms[2] };
yield return new Property("padding-left") { Term = terms[3] };
break;
default:
throw new InvalidOperationException();
}
break;
case "-webkit-margin-start":
case "-moz-margin-start":
if (leftToRight) yield return new Property("margin-left") { Term = style.Term };
if (!leftToRight) yield return new Property("margin-right") { Term = style.Term };
break;
case "-webkit-padding-start":
case "-moz-padding-start":
if (leftToRight) yield return new Property("padding-left") { Term = style.Term };
if (!leftToRight) yield return new Property("padding-right") { Term = style.Term };
break;
case "-webkit-margin-end":
case "-moz-margin-end":
if (leftToRight) yield return new Property("margin-right") { Term = style.Term };
if (!leftToRight) yield return new Property("margin-left") { Term = style.Term };
break;
case "-webkit-padding-end":
case "-moz-padding-end":
if (leftToRight) yield return new Property("padding-right") { Term = style.Term };
if (!leftToRight) yield return new Property("padding-left") { Term = style.Term };
break;
default:
yield return style;
break;
}
}
