mirror of
https://github.com/servo/servo.git
synced 2025-08-03 04:30:10 +01:00
Remove interior mutability from ResizeObservation
(#36233)
This is struct is always already wrapped in a RefCell by `ResizeObserver`. It is not exposed to JS itself, so it doesn't need `RefCell`s. Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
parent
bc898da5de
commit
aca5c3b7ca
1 changed files with 16 additions and 17 deletions
|
@ -2,7 +2,6 @@
|
|||
* 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 std::cell::RefCell;
|
||||
use std::rc::Rc;
|
||||
|
||||
use app_units::Au;
|
||||
|
@ -98,12 +97,12 @@ impl ResizeObserver {
|
|||
|
||||
// Step 2.2.1.2 If targetDepth is greater than depth then add observation to [[activeTargets]].
|
||||
if target_depth > *depth {
|
||||
observation.state = ObservationState::Active(size).into();
|
||||
observation.state = ObservationState::Active(size);
|
||||
*has_active = true;
|
||||
}
|
||||
// Step 2.2.1.3 Else add observation to [[skippedTargets]].
|
||||
else {
|
||||
observation.state = ObservationState::Skipped.into();
|
||||
observation.state = ObservationState::Skipped;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -125,12 +124,12 @@ impl ResizeObserver {
|
|||
let mut entries: Vec<DomRoot<ResizeObserverEntry>> = Default::default();
|
||||
|
||||
// Step 2.3 For each observation in [[activeTargets]] perform these steps:
|
||||
for (observation, target) in self.observation_targets.borrow().iter() {
|
||||
for (observation, target) in self.observation_targets.borrow_mut().iter_mut() {
|
||||
let box_size = {
|
||||
let ObservationState::Active(box_size) = &*observation.state.borrow() else {
|
||||
let ObservationState::Active(box_size) = observation.state else {
|
||||
continue;
|
||||
};
|
||||
*box_size
|
||||
box_size
|
||||
};
|
||||
has_active_observation_targets = true;
|
||||
|
||||
|
@ -168,8 +167,8 @@ impl ResizeObserver {
|
|||
// initialized with one reported size (zero).
|
||||
// The spec plans to store multiple reported sizes,
|
||||
// but for now there can be only one.
|
||||
observation.last_reported_sizes.borrow_mut()[0] = size_impl;
|
||||
*observation.state.borrow_mut() = ObservationState::Done;
|
||||
observation.last_reported_sizes[0] = size_impl;
|
||||
observation.state = ObservationState::Done;
|
||||
let target_depth = calculate_depth_for_node(target);
|
||||
if target_depth < *shallowest_target_depth {
|
||||
*shallowest_target_depth = target_depth;
|
||||
|
@ -194,7 +193,7 @@ impl ResizeObserver {
|
|||
self.observation_targets
|
||||
.borrow()
|
||||
.iter()
|
||||
.any(|(observation, _)| *observation.state.borrow() == ObservationState::Skipped)
|
||||
.any(|(observation, _)| observation.state == ObservationState::Skipped)
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -263,12 +262,12 @@ enum ObservationState {
|
|||
#[derive(JSTraceable, MallocSizeOf)]
|
||||
struct ResizeObservation {
|
||||
/// <https://drafts.csswg.org/resize-observer/#dom-resizeobservation-observedbox>
|
||||
observed_box: RefCell<ResizeObserverBoxOptions>,
|
||||
observed_box: ResizeObserverBoxOptions,
|
||||
/// <https://drafts.csswg.org/resize-observer/#dom-resizeobservation-lastreportedsizes>
|
||||
last_reported_sizes: RefCell<Vec<ResizeObserverSizeImpl>>,
|
||||
last_reported_sizes: Vec<ResizeObserverSizeImpl>,
|
||||
/// State machine mimicking the "active" and "skipped" targets slots of the observer.
|
||||
#[no_trace]
|
||||
state: RefCell<ObservationState>,
|
||||
state: ObservationState,
|
||||
}
|
||||
|
||||
impl ResizeObservation {
|
||||
|
@ -276,9 +275,9 @@ impl ResizeObservation {
|
|||
pub(crate) fn new(observed_box: ResizeObserverBoxOptions) -> ResizeObservation {
|
||||
let size_impl = ResizeObserverSizeImpl::new(0.0, 0.0);
|
||||
ResizeObservation {
|
||||
observed_box: RefCell::new(observed_box),
|
||||
last_reported_sizes: RefCell::new(vec![size_impl]),
|
||||
state: RefCell::new(Default::default()),
|
||||
observed_box,
|
||||
last_reported_sizes: vec![size_impl],
|
||||
state: Default::default(),
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -286,8 +285,8 @@ impl ResizeObservation {
|
|||
/// Returning an optional calculated size, instead of a boolean,
|
||||
/// to avoid recalculating the size in the subsequent broadcast.
|
||||
fn is_active(&self, target: &Element, can_gc: CanGc) -> Option<Rect<Au>> {
|
||||
let last_reported_size = self.last_reported_sizes.borrow()[0];
|
||||
let box_size = calculate_box_size(target, &self.observed_box.borrow(), can_gc);
|
||||
let last_reported_size = self.last_reported_sizes[0];
|
||||
let box_size = calculate_box_size(target, &self.observed_box, can_gc);
|
||||
let is_active = box_size.width().to_f64_px() != last_reported_size.inline_size() ||
|
||||
box_size.height().to_f64_px() != last_reported_size.block_size();
|
||||
if is_active { Some(box_size) } else { None }
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue