internal CSSColumnsProperty()
: base(PropertyNames.Columns)
{
_inherited = false;
_count = new CSSColumnCountProperty();
_width = new CSSColumnWidthProperty();
}
/// <summary>
/// Determines if the given value represents a valid state of this property.
/// </summary>
/// <param name="value">The state that should be used.</param>
/// <returns>True if the state is valid, otherwise false.</returns>
protected override Boolean IsValid(CSSValue value)
{
if (value == CSSValue.Inherit)
return true;
var index = 0;
var list = value as CSSValueList ?? new CSSValueList(value);
var startGroup = new List<CSSProperty>(2);
var width = new CSSColumnWidthProperty();
var count = new CSSColumnCountProperty();
startGroup.Add(width);
startGroup.Add(count);
while (true)
{
var length = startGroup.Count;
for (int i = 0; i < length; i++)
{
if (CheckSingleProperty(startGroup[i], index, list))
{
startGroup.RemoveAt(i);
index++;
break;
}
}
if (length == startGroup.Count)
break;
}
if (index == list.Length)
{
_width = width;
_count = count;
return true;
}
return false;
}
