/// <summary>
/// 展开 CSS 样式属性的缩写形式
/// </summary>
/// <param name="property">样式属性设置</param>
/// <returns>展开后的形式，若该设置不是缩写形式，则原样返回</returns>
protected virtual IEnumerable <CssStyleProperty> ExtractShorthand(CssStyleProperty property)
{
lock ( SyncRoot )
{
if (StyleShorthandRules.Contains(property.Name))
{
return(StyleShorthandRules[property.Name].ExtractProperties(property.Value));
}
else
{
return new[] { property }
};
}
}
/// <summary> /// 检查 CSS 样式属性设置是否合法有效 /// </summary> /// <param name="property">要检查的 CSS 样式属性设置</param> /// <returns>是否合法有效</returns> protected abstract bool ValidateProperty(CssStyleProperty property);
/// <summary>
/// 检查 CSS 样式属性设置是否合法有效
/// </summary>
/// <param name="property">要检查的 CSS 样式属性设置</param>
/// <returns>是否合法有效</returns>
protected override bool ValidateProperty(CssStyleProperty property)
{
return(true);
}