/// <summary>
/// Creates a new keyframe-rule from the given source.
/// </summary>
/// <param name="source">The token iterator.</param>
/// <returns>The keyframe-rule.</returns>
CSSKeyframeRule CreateKeyframeRule(IEnumerator <CssToken> source)
{
var keyframe = new CSSKeyframeRule();
keyframe.ParentStyleSheet = sheet;
keyframe.ParentRule = CurrentRule;
open.Push(keyframe);
do
{
if (source.Current.Type == CssTokenType.CurlyBracketOpen)
{
if (SkipToNextNonWhitespace(source))
{
var tokens = LimitToCurrentBlock(source);
AppendDeclarations(tokens.GetEnumerator(), keyframe.Style.List);
}
break;
}
buffer.Append(source.Current.ToString());
}while (source.MoveNext());
keyframe.KeyText = buffer.ToString();
buffer.Clear();
open.Pop();
return(keyframe);
}
/// <summary>
/// Takes a string and transforms it into a CSS keyframe rule.
/// </summary>
/// <param name="rule">The string to parse.</param>
/// <param name="quirksMode">Optional: The status of the quirks mode flag (usually not set).</param>
/// <returns>The CSSKeyframeRule object.</returns>
internal static CSSKeyframeRule ParseKeyframeRule(String rule, Boolean quirksMode = false)
{
var parser = new CssParser(rule);
var keyframe = new CSSKeyframeRule();
parser.AddRule(keyframe);
parser.IsQuirksMode = quirksMode;
parser.skipExceptions = false;
parser.state = CssState.InKeyframeText;
parser.Parse();
return(keyframe);
}
/// <summary>
/// Called in the text for a frame in the @keyframes rule.
/// </summary>
/// <param name="token">The current token.</param>
/// <returns>The status.</returns>
Boolean InKeyframeText(CssToken token)
{
if (token.Type == CssTokenType.CurlyBracketOpen)
{
var frame = new CSSKeyframeRule();
frame.KeyText = buffer.ToPool();
AddRule(frame);
SwitchTo(CssState.InDeclaration);
return(true);
}
else if (token.Type == CssTokenType.CurlyBracketClose)
{
buffer.ToPool();
KeyframesData(token);
return(false);
}
buffer.Append(token.ToValue());
return(true);
}
