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use crate::{
Attribute,
AttributeId,
};
/// This trait contains methods that check attribute's type according to the
/// [SVG spec](https://www.w3.org/TR/SVG/intro.html#Definitions).
pub trait AttributeType {
/// Returns `true` if the current attribute is part of
/// [presentation attributes](https://www.w3.org/TR/SVG/propidx.html).
fn is_presentation(&self) -> bool;
/// Returns `true` if the current attribute is part of inheritable
/// [presentation attributes](https://www.w3.org/TR/SVG/propidx.html).
fn is_inheritable(&self) -> bool;
/// Returns `true` if the current attribute is part of
/// [animation event attributes](https://www.w3.org/TR/SVG/intro.html#TermAnimationEventAttribute).
fn is_animation_event(&self) -> bool;
/// Returns `true` if the current attribute is part of
/// [graphical event attributes](https://www.w3.org/TR/SVG/intro.html#TermGraphicalEventAttribute).
fn is_graphical_event(&self) -> bool;
/// Returns `true` if the current attribute is part of
/// [document event attributes](https://www.w3.org/TR/SVG/intro.html#TermDocumentEventAttribute).
fn is_document_event(&self) -> bool;
/// Returns `true` if the current attribute is part of
/// [conditional processing attributes
/// ](https://www.w3.org/TR/SVG/intro.html#TermConditionalProcessingAttribute).
fn is_conditional_processing(&self) -> bool;
/// Returns `true` if the current attribute is part of
/// [core attributes](https://www.w3.org/TR/SVG/intro.html#TermCoreAttributes).
///
/// **NOTE:** the `id` attribute is part of core attributes, but we don't store
/// it in `Attributes` since it's part of the `Node` struct.
fn is_core(&self) -> bool;
/// Returns `true` if the current attribute is part of fill attributes.
///
/// List of fill attributes: `fill`, `fill-opacity`, `fill-rule`.
///
/// This check is not defined by the SVG spec.
fn is_fill(&self) -> bool;
/// Returns `true` if the current attribute is part of stroke attributes.
///
/// List of stroke attributes: `stroke`, `stroke-dasharray`, `stroke-dashoffset`,
/// `stroke-dashoffset`, `stroke-linecap`, `stroke-linejoin`, `stroke-miterlimit`,
/// `stroke-opacity`, `stroke-width`.
///
/// This check is not defined by the SVG spec.
fn is_stroke(&self) -> bool;
}
macro_rules! is_func {
($name:ident) => (
fn $name(&self) -> bool {
if let Some(id) = self.id() {
id.$name()
} else {
false
}
}
)
}
impl AttributeType for Attribute {
is_func!(is_presentation);
is_func!(is_inheritable);
is_func!(is_animation_event);
is_func!(is_graphical_event);
is_func!(is_document_event);
is_func!(is_conditional_processing);
is_func!(is_core);
is_func!(is_fill);
is_func!(is_stroke);
}
impl AttributeType for AttributeId {
fn is_presentation(&self) -> bool {
match *self {
AttributeId::AlignmentBaseline
| AttributeId::BaselineShift
| AttributeId::Clip
| AttributeId::ClipPath
| AttributeId::ClipRule
| AttributeId::Color
| AttributeId::ColorInterpolation
| AttributeId::ColorInterpolationFilters
| AttributeId::ColorProfile
| AttributeId::ColorRendering
| AttributeId::Cursor
| AttributeId::Direction
| AttributeId::Display
| AttributeId::DominantBaseline
| AttributeId::EnableBackground
| AttributeId::Fill
| AttributeId::FillOpacity
| AttributeId::FillRule
| AttributeId::Filter
| AttributeId::FloodColor
| AttributeId::FloodOpacity
| AttributeId::Font
| AttributeId::FontFamily
| AttributeId::FontSize
| AttributeId::FontSizeAdjust
| AttributeId::FontStretch
| AttributeId::FontStyle
| AttributeId::FontVariant
| AttributeId::FontWeight
| AttributeId::GlyphOrientationHorizontal
| AttributeId::GlyphOrientationVertical
| AttributeId::ImageRendering
| AttributeId::Kerning
| AttributeId::LetterSpacing
| AttributeId::LightingColor
| AttributeId::Marker
| AttributeId::MarkerEnd
| AttributeId::MarkerMid
| AttributeId::MarkerStart
| AttributeId::Mask
| AttributeId::Opacity
| AttributeId::Overflow
| AttributeId::PointerEvents
| AttributeId::ShapeRendering
| AttributeId::StopColor
| AttributeId::StopOpacity
| AttributeId::Stroke
| AttributeId::StrokeDasharray
| AttributeId::StrokeDashoffset
| AttributeId::StrokeLinecap
| AttributeId::StrokeLinejoin
| AttributeId::StrokeMiterlimit
| AttributeId::StrokeOpacity
| AttributeId::StrokeWidth
| AttributeId::TextAnchor
| AttributeId::TextDecoration
| AttributeId::TextRendering
| AttributeId::UnicodeBidi
| AttributeId::Visibility
| AttributeId::WordSpacing
| AttributeId::WritingMode => true,
_ => false,
}
}
fn is_inheritable(&self) -> bool {
if self.is_presentation() {
!is_non_inheritable(*self)
} else {
false
}
}
fn is_animation_event(&self) -> bool {
match *self {
AttributeId::Onbegin
| AttributeId::Onend
| AttributeId::Onload
| AttributeId::Onrepeat => true,
_ => false,
}
}
fn is_graphical_event(&self) -> bool {
match *self {
AttributeId::Onactivate
| AttributeId::Onclick
| AttributeId::Onfocusin
| AttributeId::Onfocusout
| AttributeId::Onload
| AttributeId::Onmousedown
| AttributeId::Onmousemove
| AttributeId::Onmouseout
| AttributeId::Onmouseover
| AttributeId::Onmouseup => true,
_ => false,
}
}
fn is_document_event(&self) -> bool {
match *self {
AttributeId::Onabort
| AttributeId::Onerror
| AttributeId::Onresize
| AttributeId::Onscroll
| AttributeId::Onunload
| AttributeId::Onzoom => true,
_ => false,
}
}
fn is_conditional_processing(&self) -> bool {
match *self {
AttributeId::RequiredExtensions
| AttributeId::RequiredFeatures
| AttributeId::SystemLanguage => true,
_ => false,
}
}
fn is_core(&self) -> bool {
match *self {
AttributeId::Base
| AttributeId::Lang
| AttributeId::Space => true,
_ => false,
}
}
fn is_fill(&self) -> bool {
match *self {
AttributeId::Fill
| AttributeId::FillOpacity
| AttributeId::FillRule => true,
_ => false,
}
}
fn is_stroke(&self) -> bool {
match *self {
AttributeId::Stroke
| AttributeId::StrokeDasharray
| AttributeId::StrokeDashoffset
| AttributeId::StrokeLinecap
| AttributeId::StrokeLinejoin
| AttributeId::StrokeMiterlimit
| AttributeId::StrokeOpacity
| AttributeId::StrokeWidth => true,
_ => false,
}
}
}
// NOTE: `visibility` is marked as inheritable here: https://www.w3.org/TR/SVG/propidx.html,
// but here https://www.w3.org/TR/SVG/painting.html#VisibilityControl
// we have "Note that `visibility` is not an inheritable property."
// And here https://www.w3.org/TR/2008/REC-CSS2-20080411/visufx.html#propdef-visibility
// Inherited: no
// And according to webkit, it's really non-inheritable.
fn is_non_inheritable(id: AttributeId) -> bool {
match id {
AttributeId::AlignmentBaseline
| AttributeId::BaselineShift
| AttributeId::Clip
| AttributeId::ClipPath
| AttributeId::Display
| AttributeId::DominantBaseline
| AttributeId::EnableBackground
| AttributeId::Filter
| AttributeId::FloodColor
| AttributeId::FloodOpacity
| AttributeId::LightingColor
| AttributeId::Mask
| AttributeId::Opacity
| AttributeId::Overflow
| AttributeId::StopColor
| AttributeId::StopOpacity
| AttributeId::TextDecoration
| AttributeId::UnicodeBidi
| AttributeId::Visibility => true,
_ => false
}
}