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LibWeb: Generate logical property mappings
To support this, how we declare logical property aliases has changed. Instead of `logical-alias-for` being a list of properties, it's now an object with a `group` and `mapping`. The group is the name of a logical property group in LogicalPropertyGroups.json. The mapping is which side/dimension/corner this property is. Hopefully it's self-explanatory enough. The generated code is very much a copy of what was previously in `StyleComputer::map_logical_alias_to_physical_property_id()`, so there should be no behaviour change.
This commit is contained in:
parent
4c48a51860
commit
69d4811ef7
Notes:
github-actions[bot]
2025-07-08 17:46:32 +00:00
Author: https://github.com/AtkinsSJ
Commit: 69d4811ef7
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5287
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/tcl3 ✅
9 changed files with 561 additions and 646 deletions
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@ -888,395 +888,6 @@ void StyleComputer::for_each_property_expanding_shorthands(PropertyID property_i
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set_longhand_property(property_id, value);
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}
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// https://drafts.csswg.org/css-writing-modes-4/#logical-to-physical
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PropertyID StyleComputer::map_logical_alias_to_physical_property_id(PropertyID property_id, LogicalAliasMappingContext mapping_context)
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{
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// FIXME: Note: The used direction depends on the computed writing-mode and text-orientation: in vertical writing
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// modes, a text-orientation value of upright forces the used direction to ltr.
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auto used_direction = mapping_context.direction;
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switch (property_id) {
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case PropertyID::BlockSize:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::Height;
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return PropertyID::Width;
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case PropertyID::BorderBlockEndColor:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::BorderBottomColor;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::BorderLeftColor;
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return PropertyID::BorderRightColor;
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case PropertyID::BorderBlockEndStyle:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::BorderBottomStyle;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::BorderLeftStyle;
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return PropertyID::BorderRightStyle;
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case PropertyID::BorderBlockEndWidth:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::BorderBottomWidth;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::BorderLeftWidth;
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return PropertyID::BorderRightWidth;
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case PropertyID::BorderBlockStartColor:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::BorderTopColor;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::BorderRightColor;
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return PropertyID::BorderLeftColor;
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case PropertyID::BorderBlockStartStyle:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::BorderTopStyle;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::BorderRightStyle;
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return PropertyID::BorderLeftStyle;
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case PropertyID::BorderBlockStartWidth:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::BorderTopWidth;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::BorderRightWidth;
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return PropertyID::BorderLeftWidth;
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case PropertyID::BorderEndEndRadius:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomRightRadius;
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return PropertyID::BorderBottomLeftRadius;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomLeftRadius;
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return PropertyID::BorderTopLeftRadius;
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}
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if (mapping_context.writing_mode == WritingMode::VerticalLr) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomRightRadius;
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return PropertyID::BorderTopRightRadius;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopRightRadius;
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return PropertyID::BorderBottomRightRadius;
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case PropertyID::BorderEndStartRadius:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomLeftRadius;
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return PropertyID::BorderBottomRightRadius;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopLeftRadius;
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return PropertyID::BorderBottomLeftRadius;
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}
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if (mapping_context.writing_mode == WritingMode::VerticalLr) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopRightRadius;
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return PropertyID::BorderBottomRightRadius;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomRightRadius;
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return PropertyID::BorderTopRightRadius;
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case PropertyID::BorderInlineStartColor:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderLeftColor;
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return PropertyID::BorderRightColor;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopColor;
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return PropertyID::BorderBottomColor;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomColor;
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return PropertyID::BorderTopColor;
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case PropertyID::BorderInlineStartStyle:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderLeftStyle;
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return PropertyID::BorderRightStyle;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopStyle;
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return PropertyID::BorderBottomStyle;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomStyle;
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return PropertyID::BorderTopStyle;
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case PropertyID::BorderInlineStartWidth:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderLeftWidth;
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return PropertyID::BorderRightWidth;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopWidth;
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return PropertyID::BorderBottomWidth;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomWidth;
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return PropertyID::BorderTopWidth;
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case PropertyID::BorderInlineEndColor:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderRightColor;
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return PropertyID::BorderLeftColor;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomColor;
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return PropertyID::BorderTopColor;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopColor;
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return PropertyID::BorderBottomColor;
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case PropertyID::BorderInlineEndStyle:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderRightStyle;
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return PropertyID::BorderLeftStyle;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomStyle;
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return PropertyID::BorderTopStyle;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopStyle;
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return PropertyID::BorderBottomStyle;
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case PropertyID::BorderInlineEndWidth:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderRightWidth;
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return PropertyID::BorderLeftWidth;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomWidth;
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return PropertyID::BorderTopWidth;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopWidth;
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return PropertyID::BorderBottomWidth;
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case PropertyID::BorderStartEndRadius:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopRightRadius;
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return PropertyID::BorderTopLeftRadius;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomRightRadius;
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return PropertyID::BorderTopRightRadius;
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}
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if (mapping_context.writing_mode == WritingMode::VerticalLr) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomLeftRadius;
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return PropertyID::BorderTopLeftRadius;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopLeftRadius;
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return PropertyID::BorderBottomLeftRadius;
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case PropertyID::BorderStartStartRadius:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopLeftRadius;
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return PropertyID::BorderTopRightRadius;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopRightRadius;
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return PropertyID::BorderBottomRightRadius;
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}
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if (mapping_context.writing_mode == WritingMode::VerticalLr) {
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderTopLeftRadius;
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return PropertyID::BorderBottomLeftRadius;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::BorderBottomLeftRadius;
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return PropertyID::BorderTopLeftRadius;
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case PropertyID::MarginBlockStart:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::MarginTop;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::MarginRight;
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return PropertyID::MarginLeft;
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case PropertyID::MarginBlockEnd:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::MarginBottom;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::MarginLeft;
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return PropertyID::MarginRight;
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case PropertyID::MarginInlineStart:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::MarginLeft;
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return PropertyID::MarginRight;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::MarginTop;
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return PropertyID::MarginBottom;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::MarginBottom;
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return PropertyID::MarginTop;
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case PropertyID::MarginInlineEnd:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::MarginRight;
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return PropertyID::MarginLeft;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::MarginBottom;
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return PropertyID::MarginTop;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::MarginTop;
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return PropertyID::MarginBottom;
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case PropertyID::MaxBlockSize:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::MaxHeight;
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return PropertyID::MaxWidth;
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case PropertyID::MaxInlineSize:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::MaxWidth;
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return PropertyID::MaxHeight;
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case PropertyID::MinBlockSize:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::MinHeight;
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return PropertyID::MinWidth;
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case PropertyID::MinInlineSize:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::MinWidth;
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return PropertyID::MinHeight;
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case PropertyID::PaddingBlockStart:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::PaddingTop;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::PaddingRight;
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return PropertyID::PaddingLeft;
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case PropertyID::PaddingBlockEnd:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::PaddingBottom;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::PaddingLeft;
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return PropertyID::PaddingRight;
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case PropertyID::PaddingInlineStart:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::PaddingLeft;
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return PropertyID::PaddingRight;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::PaddingTop;
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return PropertyID::PaddingBottom;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::PaddingBottom;
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return PropertyID::PaddingTop;
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case PropertyID::PaddingInlineEnd:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::PaddingRight;
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return PropertyID::PaddingLeft;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::PaddingBottom;
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return PropertyID::PaddingTop;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::PaddingTop;
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return PropertyID::PaddingBottom;
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case PropertyID::InlineSize:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::Width;
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return PropertyID::Height;
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case PropertyID::InsetBlockStart:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::Top;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::Right;
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return PropertyID::Left;
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case PropertyID::InsetBlockEnd:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb)
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return PropertyID::Bottom;
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl))
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return PropertyID::Left;
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return PropertyID::Right;
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case PropertyID::InsetInlineStart:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::Left;
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return PropertyID::Right;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::Top;
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return PropertyID::Bottom;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::Bottom;
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return PropertyID::Top;
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case PropertyID::InsetInlineEnd:
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if (mapping_context.writing_mode == WritingMode::HorizontalTb) {
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if (used_direction == Direction::Ltr)
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return PropertyID::Right;
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return PropertyID::Left;
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}
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if (first_is_one_of(mapping_context.writing_mode, WritingMode::VerticalRl, WritingMode::SidewaysRl, WritingMode::VerticalLr)) {
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if (used_direction == Direction::Ltr)
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return PropertyID::Bottom;
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return PropertyID::Top;
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}
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if (used_direction == Direction::Ltr)
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return PropertyID::Top;
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return PropertyID::Bottom;
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default:
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VERIFY(!property_is_logical_alias(property_id));
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return property_id;
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}
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}
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void StyleComputer::cascade_declarations(
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CascadedProperties& cascaded_properties,
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DOM::Element& element,
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@ -1334,7 +945,7 @@ void StyleComputer::cascade_declarations(
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if (property_is_logical_alias(longhand_id)) {
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if (!logical_alias_mapping_context.has_value())
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return;
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physical_property_id = map_logical_alias_to_physical_property_id(longhand_id, logical_alias_mapping_context.value());
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physical_property_id = map_logical_alias_to_physical_property(longhand_id, logical_alias_mapping_context.value());
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} else {
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physical_property_id = longhand_id;
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}
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@ -1523,7 +1134,7 @@ void StyleComputer::collect_animation_into(DOM::Element& element, Optional<CSS::
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style_value = Parser::Parser::resolve_unresolved_style_value(Parser::ParsingParams { element.document() }, element, pseudo_element, property_id, style_value->as_unresolved());
|
||||
|
||||
for_each_property_expanding_shorthands(property_id, *style_value, [&](PropertyID longhand_id, CSSStyleValue const& longhand_value) {
|
||||
auto physical_longhand_id = map_logical_alias_to_physical_property_id(longhand_id, LogicalAliasMappingContext { computed_properties.writing_mode(), computed_properties.direction() });
|
||||
auto physical_longhand_id = map_logical_alias_to_physical_property(longhand_id, LogicalAliasMappingContext { computed_properties.writing_mode(), computed_properties.direction() });
|
||||
auto physical_longhand_id_bitmap_index = to_underlying(physical_longhand_id) - to_underlying(first_longhand_property_id);
|
||||
|
||||
// Don't overwrite values if this is the result of a UseInitial
|
||||
|
@ -2532,7 +2143,7 @@ void StyleComputer::compute_font(ComputedProperties& style, DOM::Element const*
|
|||
}
|
||||
}
|
||||
|
||||
StyleComputer::LogicalAliasMappingContext StyleComputer::compute_logical_alias_mapping_context(DOM::Element& element, Optional<CSS::PseudoElement> pseudo_element, ComputeStyleMode mode) const
|
||||
LogicalAliasMappingContext StyleComputer::compute_logical_alias_mapping_context(DOM::Element& element, Optional<PseudoElement> pseudo_element, ComputeStyleMode mode) const
|
||||
{
|
||||
auto normalize_value = [&](auto property_id, auto value) {
|
||||
if (!value || value->is_inherit() || value->is_unset()) {
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue