private void AppendStyles(HtmlNode node, HtmlNode parent)
{
CSSPropertyParser propertyParser = new CSSPropertyParser();
foreach (HtmlStyle parentStyle in parent.HtmlStyles)
{
if (!propertyParser.CanInherit(parentStyle.Name))
{
continue;
}
bool found = false;
if (propertyParser.InheritStyle(parentStyle, node))
{
continue;
}
foreach (HtmlStyle childStyle in node.HtmlStyles)
{
if (propertyParser.StyleContains(parentStyle, childStyle))
{
found = true;
break;
}
}
if (!found)
{
node.UpdateInheritedStyles(parentStyle);
}
}
foreach (HtmlStyle parentStyle in parent.InheritedHtmlStyles)
{
if (!propertyParser.CanInherit(parentStyle.Name))
{
continue;
}
if(parent.HasStyle(parentStyle.Name))
{
continue;
}
propertyParser.InheritStyle(parentStyle, node);
}
}
internal override bool AppendStyle(HtmlStyle parentStyle, HtmlNode child)
{
if (parentStyle == null || child == null)
{
return false;
}
if (parentStyle.Name.CompareInvariantCultureIgnoreCase(backgroundColor) ||
parentStyle.Name.CompareInvariantCultureIgnoreCase(background))
{
HtmlStyle style;
if (!child.HasStyle(backgroundColor) && !child.HasStyle(background))
{
//child.HtmlStyles.Add(new HtmlStyle(parentStyle.Name, parentStyle.Value, false));
child.UpdateInheritedStyles(parentStyle);
}
else if ((child.TryGetStyle(background, out style) || child.TryGetStyle(backgroundColor, out style)) &&
style.Value.CompareInvariantCultureIgnoreCase(transparent))
{
string styleValue = parentStyle.Value;
if (parentStyle.Name.CompareInvariantCultureIgnoreCase(background) &&
style.Name.CompareInvariantCultureIgnoreCase(backgroundColor))
{
int index = styleValue.IndexOf(' ');
if (index != -1)
{
styleValue = styleValue.Remove(index);
}
}
style.ModifyStyle(styleValue);
}
return true;
}
return false;
}
private void UpdateCurrentNodeInheritedStyles(HtmlNode node)
{
CSSPropertyParser propertyParser = new CSSPropertyParser();
foreach(HtmlStyle style in node.HtmlStyles)
{
if (!propertyParser.CanInherit(style.Name))
{
continue;
}
node.UpdateInheritedStyles(style);
}
}
private void ProcessFontFamily(HtmlStyle parentStyle, HtmlNode child)
{
if (!child.HasStyle(fontFamily) && !child.HasStyle(font))
{
child.UpdateInheritedStyles(parentStyle);
}
}
private void ProcessFont(HtmlStyle parentStyle, HtmlNode child)
{
Dictionary<string, string> parentStyles = new Dictionary<string, string>();
KeyValuePair<Stack<string>, Stack<string>> styleStack =
new KeyValuePair<Stack<string>, Stack<string>>(new Stack<string>(), new Stack<string>());
if (ProcessFontStyle(parentStyle.Value, parentStyles, styleStack) && parentStyles.Count > 0)
{
foreach (var style in parentStyles)
{
if (!child.HasStyle(style.Key))
{
child.UpdateInheritedStyles(new HtmlStyle(style.Key, style.Value, false));
}
}
}
}