private void ApplyStyle(CSSelector nextSelector, Specificity specificity, HtmlNode node, List<HtmlStyle> htmlStyles)
{
if (node.Next != null)
{
if (nextSelector.IsValidNode(node.GetNext()))
{
nextSelector.AddSpecificity(specificity);
nextSelector.Parse(node.GetNext(), htmlStyles);
}
ApplyStyle(nextSelector, specificity, node.GetNext(), htmlStyles);
}
}
internal override void Parse(HtmlNode node, Specificity specificity, List<HtmlStyle> htmlStyles)
{
if (node.Next != null)
{
HtmlNode temp = node.GetNext();
//Empty text nodes can be avoid. This loop will skip those.
while (temp != null && temp.Tag == HtmlTag.TEXT)
{
temp = temp.GetNext();
}
if (temp != null)
{
CSSelector nextSelector;
if (context.ParseSelector(this.selectorText, out nextSelector))
{
if (nextSelector != null && nextSelector.IsValidNode(temp))
{
nextSelector.AddSpecificity(specificity);
nextSelector.Parse(temp, htmlStyles);
}
}
}
}
}
private void InterpretStyles(HtmlNode htmlNode)
{
string style;
if (!HtmlStyle.IsNonStyleElement(htmlNode.Tag))
{
if (htmlNode.Attributes.TryGetValue("style", out style))
{
CSSParser cssParser = new CSSParser();
htmlNode.AddStyles(cssParser.ParseRules(style, SelectorType.Inline));
}
Parse(htmlNode);
}
foreach (HtmlNode node in htmlNode.GetChildren())
{
InterpretStyles(node);
}
//This loop only needs when the parent is null. If parent is not null, it will loop through all the
//child elements thus next nodes processed without this loop.
if (htmlNode.Parent == null && htmlNode.Next != null)
{
InterpretStyles(htmlNode.GetNext());
}
}
internal void ParseStyle(HtmlNode node)
{
foreach (CSSProperty property in properties)
{
property.ParseStyle(node);
}
foreach (HtmlNode child in node.GetChildren())
{
ParseStyle(child);
}
if (node.Parent == null && node.Next != null)
{
ParseStyle(node.GetNext());
}
}
private void ApplyToChildren(HtmlNode node, HtmlNode parent)
{
if (node == null)
{
return;
}
if (parent != null)
{
node.ImportInheritedStyles(parent.InheritedHtmlStyles);
AppendStyles(node, parent);
UpdateCurrentNodeInheritedStyles(node);
InheritFromParent(node, parent);
}
foreach (HtmlNode child in node.GetChildren())
{
ApplyToChildren(child, node);
}
if (node.Parent == null && node.Next != null)
{
ApplyToChildren(node.GetNext(), parent);
}
}
internal StyleSheet TrackCSS(HtmlNode node)
{
StyleSheet styleSheet = new StyleSheet(new SelectorContext());
TraverseHtmlNodes(node, styleSheet);
HtmlNode nextNode = node.GetNext();
while (nextNode != null)
{
TraverseHtmlNodes(nextNode, styleSheet);
nextNode = nextNode.GetNext();
}
return styleSheet;
}