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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use atomic_refcell::AtomicRefCell;
use bitflags::bitflags;
use script_layout_interface::wrapper_traits::LayoutDataTrait;
use crate::construct::ConstructionResult;
/// Data that layout associates with a node.
#[derive(Clone, Default)]
pub struct InnerLayoutData {
/// The current results of flow construction for this node. This is either a
/// flow or a `ConstructionItem`. See comments in `construct.rs` for more
/// details.
pub flow_construction_result: ConstructionResult,
pub before_flow_construction_result: ConstructionResult,
pub after_flow_construction_result: ConstructionResult,
pub details_summary_flow_construction_result: ConstructionResult,
pub details_content_flow_construction_result: ConstructionResult,
/// Various flags.
pub flags: LayoutDataFlags,
}
bitflags! {
#[derive(Clone, Copy, Default)]
pub struct LayoutDataFlags: u8 {
/// Whether a flow has been newly constructed.
const HAS_NEWLY_CONSTRUCTED_FLOW = 0x01;
/// Whether this node has been traversed by layout.
const HAS_BEEN_TRAVERSED = 0x02;
}
}
/// A wrapper for [`InnerLayoutData`]. This is necessary to give the entire data
/// structure interior mutability, as we will need to mutate the layout data of
/// non-mutable DOM nodes.
#[derive(Clone, Default)]
pub struct LayoutData(pub AtomicRefCell<InnerLayoutData>);
// The implementation of this trait allows the data to be stored in the DOM.
impl LayoutDataTrait for LayoutData {}
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