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Add an is_text_node to LayoutNode, so that we don't need to implement type_id for the style system.

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This commit is contained in:
Bobby Holley 2015-12-15 20:37:53 -08:00
parent 6637626e02
commit e55a56d757
2 changed files with 45 additions and 40 deletions
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76
components/layout/css/matching.rs
View file

@ -11,7 +11,6 @@ use context::SharedLayoutContext;
use data::LayoutDataWrapper;
use incremental::{self, RestyleDamage};
use msg::ParseErrorReporter;
use script::dom::bindings::inheritance::{CharacterDataTypeId, NodeTypeId};
use script::layout_interface::Animation;
use selectors::bloom::BloomFilter;
use selectors::matching::{CommonStyleAffectingAttributeMode, CommonStyleAffectingAttributes};
@ -724,49 +723,46 @@ impl<'ln, ConcreteLayoutNode> MatchMethods<'ln, ConcreteLayoutNode>
match *layout_data_ref {
None => panic!("no layout data"),
Some(ref mut layout_data) => {
match self.type_id() {
NodeTypeId::CharacterData(CharacterDataTypeId::Text) => {
// Text nodes get a copy of the parent style. This ensures
// that during fragment construction any non-inherited
// CSS properties (such as vertical-align) are correctly
// set on the fragment(s).
let cloned_parent_style = parent_style.unwrap().clone();
layout_data.shared_data.style = Some(cloned_parent_style);
}
_ => {
let mut damage = self.cascade_node_pseudo_element(
if self.is_text_node() {
// Text nodes get a copy of the parent style. This ensures
// that during fragment construction any non-inherited
// CSS properties (such as vertical-align) are correctly
// set on the fragment(s).
let cloned_parent_style = parent_style.unwrap().clone();
layout_data.shared_data.style = Some(cloned_parent_style);
} else {
let mut damage = self.cascade_node_pseudo_element(
layout_context,
parent_style,
&applicable_declarations.normal,
&mut layout_data.shared_data.style,
applicable_declarations_cache,
new_animations_sender,
applicable_declarations.normal_shareable,
true);
if !applicable_declarations.before.is_empty() {
damage = damage | self.cascade_node_pseudo_element(
layout_context,
parent_style,
&applicable_declarations.normal,
&mut layout_data.shared_data.style,
Some(layout_data.shared_data.style.as_ref().unwrap()),
&*applicable_declarations.before,
&mut layout_data.data.before_style,
applicable_declarations_cache,
new_animations_sender,
applicable_declarations.normal_shareable,
true);
if applicable_declarations.before.len() > 0 {
damage = damage | self.cascade_node_pseudo_element(
layout_context,
Some(layout_data.shared_data.style.as_ref().unwrap()),
&*applicable_declarations.before,
&mut layout_data.data.before_style,
applicable_declarations_cache,
new_animations_sender,
false,
false);
}
if applicable_declarations.after.len() > 0 {
damage = damage | self.cascade_node_pseudo_element(
layout_context,
Some(layout_data.shared_data.style.as_ref().unwrap()),
&*applicable_declarations.after,
&mut layout_data.data.after_style,
applicable_declarations_cache,
new_animations_sender,
false,
false);
}
layout_data.data.restyle_damage = damage;
false,
false);
}
if !applicable_declarations.after.is_empty() {
damage = damage | self.cascade_node_pseudo_element(
layout_context,
Some(layout_data.shared_data.style.as_ref().unwrap()),
&*applicable_declarations.after,
&mut layout_data.data.after_style,
applicable_declarations_cache,
new_animations_sender,
false,
false);
}
layout_data.data.restyle_damage = damage;
}
}
}

9
components/layout/wrapper.rs
View file

@ -93,6 +93,11 @@ pub trait LayoutNode<'ln> : Sized + Copy + Clone {
/// Returns the type ID of this node.
fn type_id(&self) -> NodeTypeId;
/// Returns whether this is a text node. It turns out that this is all the style system cares
/// about, and thus obviates the need to compute the full type id, which would be expensive in
/// Gecko.
fn is_text_node(&self) -> bool;
fn is_element(&self) -> bool;
fn dump(self);
@ -304,6 +309,10 @@ impl<'ln> LayoutNode<'ln> for ServoLayoutNode<'ln> {
}
}
fn is_text_node(&self) -> bool {
self.type_id() == NodeTypeId::CharacterData(CharacterDataTypeId::Text)
}
fn is_element(&self) -> bool {
unsafe {
self.node.is_element_for_layout()