mirror of
https://github.com/servo/servo
synced 2026-05-09 08:32:31 +02:00
291e9e57cb
Accepting the name of the event as a `DOMString` means that when events are constructed from within Servo (for instance via input event handling), the static strings are converted to an owned `String` wrapped in a `DOMString` and then finally converted to an `Atom` in `Event`. This makes it so that all non-generated `Event` constructors accept `Atom`, which can avoid a conversion entirely when the atom already exists on the Stylo atoms list and eliminate one in-memory copy in the case that it isn't on the atom list. Eventually, all event names can be on the atom list and we can eliminate all copies. This is a tiny optimization, but also makes the code much friendlier everywhere. Testing: This should not change behavior so should be covered by existing test. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
119 lines
3.5 KiB
Rust
119 lines
3.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use dom_struct::dom_struct;
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use js::rust::HandleObject;
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use style::Atom;
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use crate::dom::bindings::codegen::Bindings::CompositionEventBinding::{
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self, CompositionEventMethods,
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};
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use crate::dom::bindings::codegen::Bindings::UIEventBinding::UIEvent_Binding::UIEventMethods;
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use crate::dom::bindings::error::Fallible;
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use crate::dom::bindings::reflector::{reflect_dom_object, reflect_dom_object_with_proto};
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use crate::dom::bindings::root::DomRoot;
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use crate::dom::bindings::str::DOMString;
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use crate::dom::uievent::UIEvent;
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use crate::dom::window::Window;
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use crate::script_runtime::CanGc;
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#[dom_struct]
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pub(crate) struct CompositionEvent {
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uievent: UIEvent,
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data: DOMString,
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}
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impl CompositionEvent {
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pub(crate) fn new_inherited() -> CompositionEvent {
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CompositionEvent {
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uievent: UIEvent::new_inherited(),
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data: DOMString::new(),
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}
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}
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pub(crate) fn new_uninitialized(window: &Window, can_gc: CanGc) -> DomRoot<CompositionEvent> {
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reflect_dom_object(Box::new(CompositionEvent::new_inherited()), window, can_gc)
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}
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#[expect(clippy::too_many_arguments)]
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pub(crate) fn new(
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window: &Window,
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event_type: Atom,
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can_bubble: bool,
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cancelable: bool,
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view: Option<&Window>,
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detail: i32,
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data: DOMString,
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can_gc: CanGc,
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) -> DomRoot<CompositionEvent> {
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Self::new_with_proto(
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window, None, event_type, can_bubble, cancelable, view, detail, data, can_gc,
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)
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}
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#[expect(clippy::too_many_arguments)]
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fn new_with_proto(
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window: &Window,
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proto: Option<HandleObject>,
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event_type: Atom,
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can_bubble: bool,
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cancelable: bool,
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view: Option<&Window>,
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detail: i32,
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data: DOMString,
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can_gc: CanGc,
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) -> DomRoot<CompositionEvent> {
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let ev = reflect_dom_object_with_proto(
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Box::new(CompositionEvent {
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uievent: UIEvent::new_inherited(),
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data,
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}),
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window,
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proto,
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can_gc,
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);
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ev.uievent
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.init_event(event_type, can_bubble, cancelable, view, detail);
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ev
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}
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pub(crate) fn data(&self) -> &DOMString {
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&self.data
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}
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}
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impl CompositionEventMethods<crate::DomTypeHolder> for CompositionEvent {
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/// <https://w3c.github.io/uievents/#dom-compositionevent-compositionevent>
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fn Constructor(
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window: &Window,
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proto: Option<HandleObject>,
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can_gc: CanGc,
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event_type: DOMString,
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init: &CompositionEventBinding::CompositionEventInit,
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) -> Fallible<DomRoot<CompositionEvent>> {
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let event = CompositionEvent::new_with_proto(
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window,
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proto,
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event_type.into(),
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init.parent.parent.bubbles,
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init.parent.parent.cancelable,
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init.parent.view.as_deref(),
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init.parent.detail,
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init.data.clone(),
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can_gc,
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);
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Ok(event)
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}
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/// <https://w3c.github.io/uievents/#dom-compositionevent-data>
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fn Data(&self) -> DOMString {
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self.data.clone()
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}
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/// <https://dom.spec.whatwg.org/#dom-event-istrusted>
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fn IsTrusted(&self) -> bool {
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self.uievent.IsTrusted()
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}
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}
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