static Boolean Check(CSSValue value, ref Position position)
{
var calc = value.AsCalc();
if (calc != null)
{
position.X = calc;
}
else if (value.Is("left"))
{
position.X = CSSCalcValue.Zero;
}
else if (value.Is("right"))
{
position.X = CSSCalcValue.Full;
}
else if (value.Is("top"))
{
position.Y = CSSCalcValue.Zero;
}
else if (value.Is("bottom"))
{
position.Y = CSSCalcValue.Full;
}
else if (!value.Is("center"))
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("normal"))
{
_mode = _normal;
}
else if (value.Is("none"))
{
_mode = null;
}
else if (value is CSSValueList)
{
return(Evaluate((CSSValueList)value));
}
else if (value == CSSValue.Inherit)
{
return(true);
}
else
{
var mode = Evaluate(value);
if (mode == null)
{
return(false);
}
_mode = mode;
}
return(true);
}
/// <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.Is("visible"))
_visible = true;
else if (value.Is("hidden"))
_visible = false;
else if (value != CSSValue.Inherit)
return false;
return true;
}
/// <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.Is("auto"))
_mode = BreakMode.Auto;
else if (value.Is("avoid"))
_mode = BreakMode.Avoid;
else if (value != CSSValue.Inherit)
return false;
return true;
}
/// <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.Is("flat"))
_flat = true;
else if (value.Is("preserve-3d"))
_flat = false;
else if (value != CSSValue.Inherit)
return false;
return true;
}
public static FontVariant?ToFontVariant(this CSSValue value)
{
if (value.Is(Keywords.Normal))
{
return(FontVariant.Normal);
}
else if (value.Is(Keywords.SmallCaps))
{
return(FontVariant.SmallCaps);
}
return(null);
}
static SizeMode Check(CSSValue value)
{
var calc = value.AsCalc();
if (calc != null)
return new CalcSizeMode(calc);
else if (value.Is("auto"))
return _default;
else if (value.Is("cover"))
return _cover;
else if (value.Is("contain"))
return _contain;
return null;
}
/// <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)
{
TextDecorationLine mode;
if (value.Is("none"))
_line.Clear();
else if (value is CSSIdentifierValue && modes.TryGetValue(((CSSIdentifierValue)value).Value, out mode))
{
_line.Clear();
_line.Add(mode);
}
else if (value is CSSValueList)
{
var values = (CSSValueList)value;
var list = new List<TextDecorationLine>();
foreach (var item in values)
{
if (item is CSSIdentifierValue && modes.TryGetValue(((CSSIdentifierValue)value).Value, out mode))
list.Add(mode);
else
return false;
}
_line = list;
}
else if (value != CSSValue.Inherit)
return false;
return true;
}
/// <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.Is("none"))
_names.Clear();
else if (value is CSSIdentifierValue)
{
_names.Clear();
_names.Add(((CSSIdentifierValue)value).Value);
}
else if (value is CSSValueList)
{
var values = value.AsList<CSSIdentifierValue>();
if (values == null)
return false;
_names.Clear();
foreach (var ident in values)
_names.Add(ident.Value);
}
else if (value != CSSValue.Inherit)
return false;
return true;
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("none"))
{
_properties.Clear();
}
else if (value is CSSIdentifierValue)
{
_properties.Clear();
_properties.Add(((CSSIdentifierValue)value).Value);
}
else if (value is CSSValueList)
{
var values = value.AsList <CSSIdentifierValue>();
if (values == null)
{
return(false);
}
_properties.Clear();
foreach (var ident in values)
{
_properties.Add(ident.Value);
}
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
/// <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.Is("none"))
_quotes.Clear();
else if (value is CSSValueList)
{
var values = (CSSValueList)value;
if (values.Length % 2 != 0)
return false;
var quotes = new List<Tuple<String, String>>();
for (int i = 0; i < values.Length; i += 2)
{
var open = values[i] as CSSStringValue;
var close = values[i + 1] as CSSStringValue;
if (open == null || close == null)
return false;
quotes.Add(Tuple.Create(open.Value, close.Value));
}
_quotes = quotes;
}
else if (value != CSSValue.Inherit)
return false;
return true;
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("inside"))
{
_position = ListPosition.Inside;
}
else if (value.Is("outside"))
{
_position = ListPosition.Outside;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("separate"))
{
_separate = true;
}
else if (value.Is("collapse"))
{
_separate = false;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("normal"))
{
_style = FontVariant.Normal;
}
else if (value.Is("small-caps"))
{
_style = FontVariant.SmallCaps;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("show"))
{
_visible = true;
}
else if (value.Is("hide"))
{
_visible = false;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("flat"))
{
_flat = true;
}
else if (value.Is("preserve-3d"))
{
_flat = false;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("auto"))
{
_mode = BreakMode.Auto;
}
else if (value.Is("avoid"))
{
_mode = BreakMode.Avoid;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("top"))
{
_top = true;
}
else if (value.Is("bottom"))
{
_top = false;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("fixed"))
{
_fixed = true;
}
else if (value.Is("auto"))
{
_fixed = false;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("slice"))
{
_clone = false;
}
else if (value.Is("clone"))
{
_clone = true;
}
else if (value == CSSValue.Inherit)
{
return(true);
}
return(false);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("ltr"))
{
_mode = DirectionMode.Ltr;
}
else if (value.Is("rtl"))
{
_mode = DirectionMode.Rtl;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
public static ICssObject ToImage(this CSSValue value)
{
if (value.Is(Keywords.None))
{
return(Color.Transparent);
}
return(value.ToUri() ?? value.ToLinearGradient() ?? value.ToRadialGradient() as ICssObject);
}
protected override Boolean IsValid(CSSValue value)
{
//The element does not span multiple columns.
if (value.Is("none"))
{
_span = false;
}
//The element spans across all columns.
else if (value.Is("all"))
{
_span = true;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
//Is a keyword indicating that columns are filled sequentially.
if (value.Is("auto"))
{
_balanced = false;
}
//Is a keyword indicating that content is equally divided between columns.
else if (value.Is("balance"))
{
_balanced = true;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("none"))
_shadows.Clear();
else if (value is CSSValueList)
return Evaluate((CSSValueList)value);
else if (value != CSSValue.Inherit)
return false;
return true;
}
static SizeMode Check(CSSValue horizontal, CSSValue vertical)
{
var width = horizontal.AsCalc();
var height = vertical.AsCalc();
if (width == null && !horizontal.Is("auto"))
return null;
else if (height == null && !vertical.Is("auto"))
return null;
return new CalcSizeMode(width, height);
}
/// <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)
{
var shape = value as CSSShapeValue;
if (shape != null)
_shape = shape;
else if (value.Is("auto"))
_shape = null;
else if (value != CSSValue.Inherit)
return false;
return true;
}
/// <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)
{
var width = value.ToLength();
if (width.HasValue)
_width = width.Value;
else if (value.Is("auto"))
_width = null;
else if (value != CSSValue.Inherit)
return false;
return true;
}
/// <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)
{
var calc = value.AsCalc();
if (calc != null)
_mode = calc;
else if (value.Is("none"))
_mode = null;
else if (value != CSSValue.Inherit)
return false;
return true;
}
/// <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.Is("normal"))
_mode = _normal;
else if (value.Is("none"))
_mode = null;
else if (value is CSSValueList)
return Evaluate((CSSValueList)value);
else if (value == CSSValue.Inherit)
return true;
else
{
var mode = Evaluate(value);
if (mode == null)
return false;
_mode = mode;
}
return true;
}
static SizeMode Check(CSSValue value)
{
var calc = value.AsCalc();
if (calc != null)
{
return(new CalcSizeMode(calc));
}
else if (value.Is("auto"))
{
return(_default);
}
else if (value.Is("cover"))
{
return(_cover);
}
else if (value.Is("contain"))
{
return(_contain);
}
return(null);
}
static CSSPrimitiveValue<Number> ToNumber(CSSValue value)
{
if (value is CSSPrimitiveValue<Number>)
{
var n = (CSSPrimitiveValue<Number>)value;
if (n.Value >= Number.Zero)
return n;
}
else if (value.Is("infinite"))
return new CSSPrimitiveValue<Number>(Number.Infinite);
return null;
}
public static Length?ToBorderWidth(this CSSValue value)
{
var length = value.ToLength();
if (length != null)
{
return(length);
}
else if (value.Is(Keywords.Thin))
{
return(Length.Thin);
}
else if (value.Is(Keywords.Medium))
{
return(Length.Medium);
}
else if (value.Is(Keywords.Thick))
{
return(Length.Thick);
}
return(null);
}
/// <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)
{
//TODO
//UNITLESS in QUIRKSMODE
var calc = value.AsCalc();
if (calc != null)
_value = calc;
else if (value.Is("auto"))
_value = null;
else if (value != CSSValue.Inherit)
return false;
return true;
}
static SizeMode Check(CSSValue horizontal, CSSValue vertical)
{
var width = horizontal.AsCalc();
var height = vertical.AsCalc();
if (width == null && !horizontal.Is("auto"))
{
return(null);
}
else if (height == null && !vertical.Is("auto"))
{
return(null);
}
return(new CalcSizeMode(width, height));
}
public static IDistance ToImageBorderWidth(this CSSValue value)
{
if (value.Is(Keywords.Auto))
{
return(Percent.Hundred);
}
var multiple = value.ToSingle();
if (multiple.HasValue)
{
return(new Percent(multiple.Value * 100f));
}
return(value.ToDistance());
}
static ImageWidthMode ToMode(CSSValue value)
{
if (value.Is("auto"))
return _auto;
var multiple = value.ToNumber();
if (multiple.HasValue)
return new MultipleImageWidthMode(multiple.Value);
var calc = value.AsCalc();
if (calc != null)
return new CalcImageWidthMode(calc);
return null;
}
protected override Boolean IsValid(CSSValue value)
{
if (value is CSSPrimitiveValue <Number> )
{
_value = (Int32)((CSSPrimitiveValue <Number>)value).Value.Value;
}
else if (value.Is("auto"))
{
_value = null;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("normal"))
{
_spacing = null;
}
else if (value.ToLength().HasValue)
{
_spacing = value.ToLength();
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
if (value.Is("none"))
{
_shadows.Clear();
}
else if (value is CSSValueList)
{
return(Evaluate((CSSValueList)value));
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
static CSSPrimitiveValue <Number> ToNumber(CSSValue value)
{
if (value is CSSPrimitiveValue <Number> )
{
var n = (CSSPrimitiveValue <Number>)value;
if (n.Value >= Number.Zero)
{
return(n);
}
}
else if (value.Is("infinite"))
{
return(new CSSPrimitiveValue <Number>(Number.Infinite));
}
return(null);
}
protected override Boolean IsValid(CSSValue value)
{
var calc = value.AsCalc();
if (calc != null)
{
_mode = new CalcCoordinateMode(calc);
}
else if (value.Is("auto"))
{
_mode = _auto;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
var calc = value.AsCalc();
if (calc != null)
{
_mode = calc;
}
else if (value.Is("none"))
{
_mode = null;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
var shape = value as CSSShapeValue;
if (shape != null)
{
_shape = shape;
}
else if (value.Is("auto"))
{
_shape = null;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}
protected override Boolean IsValid(CSSValue value)
{
var gap = value.ToLength();
if (gap.HasValue)
{
_gap = gap.Value;
}
else if (value.Is("normal"))
{
_gap = _normal;
}
else if (value != CSSValue.Inherit)
{
return(false);
}
return(true);
}