/// <summary>
/// Clones an already existing <see cref="CssValue"/>
/// </summary>
internal CssValue(CssValue sv)
{
type = sv.Type;
value = sv.value;
unit = sv.Unit;
flags = sv.Flags;
}
public bool Has_Flags(ECssValueFlags Flags) => 0 != (flags & Flags);
private static ECssValueFlags Get_Inherent_Value_Type_Flags(ECssValueTypes Type, ECssUnit Unit, object Value)
{
ECssValueFlags Flags = ECssValueFlags.None;
/*if (Value is Array)
* {
* Flags |= ECssValueFlags.Collection;
* }*/
switch (Type)
{
// NOTE: Auto values get calculated in vastly different ways, sometimes this doesn't even indicate that a value depends on the value of other properties,
//so it should NOT get the 'Depends' flag
case ECssValueTypes.INHERIT: // Inherited values function like redirects which compute to the current value of the matching property for the owning element's parent
case ECssValueTypes.PERCENT: // Percentage values represent a percentage of another property's value
{
Flags |= ECssValueFlags.Depends;
break;
}
case ECssValueTypes.NULL:
case ECssValueTypes.NONE:
case ECssValueTypes.INITIAL:
case ECssValueTypes.INTEGER:
case ECssValueTypes.NUMBER:
case ECssValueTypes.STRING:
case ECssValueTypes.KEYWORD:
case ECssValueTypes.COLOR:
case ECssValueTypes.IMAGE:
case ECssValueTypes.POSITION: // The position has already been resolved here.
case ECssValueTypes.FUNCTION: // The function args have already been resolved here.
{
Flags |= ECssValueFlags.Absolute;
break;
}
case ECssValueTypes.UNSET:
case ECssValueTypes.AUTO:
case ECssValueTypes.DIMENSION:
case ECssValueTypes.RATIO:
case ECssValueTypes.RESOLUTION:
{
/* XXX:
* These values when used on properties CAN be dependant but arent always so idk maybe its best to leave them as absolute?
* Maybe we can come up with some sort of intermediate state that causes them to resolve their flag to absolute/dependent AFTER they get assigned to a property?
*/
Flags |= ECssValueFlags.Absolute;
break;
}
case ECssValueTypes.COLLECTION: // A collections flags are the combined flags of all it's sub-values
{
if (Value is Array array)
{ // Multi object
foreach (object o in array)
{
if (o is CssValue cssValue)
{
Flags |= Get_Inherent_Value_Type_Flags(cssValue.Type, cssValue.Unit, cssValue.value);
}
else
{
throw new CssException($"All {nameof(CssValue)} collection members must be {nameof(CssValue)}s");
}
}
return(Flags);
}
else if (Value is CssValue cssValue)
{ // Single object
Flags |= Get_Inherent_Value_Type_Flags(cssValue.Type, cssValue.Unit, cssValue.value);
}
else
{
throw new CssException($"All {nameof(CssValue)} collection members must be {nameof(CssValue)}s");
}
break;
}
default:
{
throw new NotImplementedException($"Flag handling for the '{Enum.GetName(typeof(ECssValueTypes), Type)}' css-value type has not been implemented!");
}
}
return(Flags);
}
internal CssValue(ECssValueTypes type, object value, ECssValueFlags flags) : this(type)
{
this.value = value;
this.flags |= flags;
this.value = value;
}
private CssValue(ECssValueTypes type)
{
this.type = type;
flags |= Get_Inherent_Value_Type_Flags(type, unit, value);
}
