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Move children_to_process to layout.

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We don't need this for Gecko, and it's hard to implement in that case because
there's nowhere obvious to put it (we don't plan to create TSDs for non-dirty
nodes, and non-dirty nodes can have dirty children which require the
children_to_process atomic). There are various solutions here, but punting is
the easiest.

We'll need to rethink this if/when we need to do a bottom-up traversal for
Gecko.
This commit is contained in:
Bobby Holley 2016-10-08 18:08:01 -07:00
parent b1d8eff467
commit c72fffa8f8
8 changed files with 74 additions and 44 deletions
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17
components/layout/data.rs
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@ -3,19 +3,13 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use construct::ConstructionResult;
use script_layout_interface::restyle_damage::RestyleDamage;
use style::data::PersistentStyleData;
use script_layout_interface::PartialPersistentLayoutData;
/// Data that layout associates with a node.
pub struct PersistentLayoutData {
/// Data that the style system associates with a node. When the
/// style system is being used standalone, this is all that hangs
/// off the node. This must be first to permit the various
/// transmutations between PersistentStyleData and PersistentLayoutData.
pub style_data: PersistentStyleData,
/// Description of how to account for recent style changes.
pub restyle_damage: RestyleDamage,
/// Data accessed by script_layout_interface. This must be first to allow
/// casting between PersistentLayoutData and PartialPersistentLayoutData.
pub base: PartialPersistentLayoutData,
/// The current results of flow construction for this node. This is either a
/// flow or a `ConstructionItem`. See comments in `construct.rs` for more
@ -38,8 +32,7 @@ impl PersistentLayoutData {
/// Creates new layout data.
pub fn new() -> PersistentLayoutData {
PersistentLayoutData {
style_data: PersistentStyleData::new(),
restyle_damage: RestyleDamage::empty(),
base: PartialPersistentLayoutData::new(),
flow_construction_result: ConstructionResult::None,
before_flow_construction_result: ConstructionResult::None,
after_flow_construction_result: ConstructionResult::None,