components/script/dom/testing/servotestutils.rs - main - githubmirror/servo

components/script/dom/testing/servotestutils.rs
103 строки3 KB
Narfinger
script: Cleanup custom node dirty inclusive ancestor walk (#46981)
04 авг 2026, 20:35
04 авг 2026, 20:3521faece
/* 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/. */

// check-tidy: no specs after this line

use backtrace::Backtrace;
use dom_struct::dom_struct;
use js::context::{JSContext, NoGC};
use layout_api::ReflowPhasesRun;
use script_bindings::codegen::GenericBindings::WindowBinding::WindowMethods;
use script_bindings::domstring::DOMString;
use script_bindings::reflector::Reflector;
use script_bindings::root::DomRoot;
use servo_base::Epoch;
use time::Duration;

use crate::dom::bindings::codegen::Bindings::ServoTestUtilsBinding::ServoTestUtilsMethods;
use crate::dom::globalscope::GlobalScope;
use crate::dom::layoutresult::LayoutResult;
use crate::dom::types::AccessibilityUpdateResult;

#[dom_struct]
pub(crate) struct ServoTestUtils {
    reflector_: Reflector,
}

impl ServoTestUtilsMethods<crate::DomTypeHolder> for ServoTestUtils {
    fn AdvanceClock(no_gc: &NoGC, global: &GlobalScope, ms: i32) {
        global
            .as_window()
            .advance_animation_clock(no_gc, Duration::milliseconds(ms as i64));
    }

    #[expect(unsafe_code)]
    fn CrashHard(_: &GlobalScope) {
        unsafe { std::ptr::null_mut::<i32>().write(42) }
    }

    fn ForceLayout(cx: &mut JSContext, global: &GlobalScope) -> DomRoot<LayoutResult> {
        let (phases_run, statistics) = global.as_window().Document().update_the_rendering(cx);

        let mut phases = Vec::new();
        if phases_run.contains(ReflowPhasesRun::RanLayout) {
            phases.push(DOMString::from("RanLayout"))
        }
        if phases_run.contains(ReflowPhasesRun::BuiltStackingContextTree) {
            phases.push(DOMString::from("BuiltStackingContextTree"))
        }
        if phases_run.contains(ReflowPhasesRun::BuiltDisplayList) {
            phases.push(DOMString::from("BuiltDisplayList"))
        }
        if phases_run.contains(ReflowPhasesRun::UpdatedScrollNodeOffset) {
            phases.push(DOMString::from("UpdatedScrollNodeOffset"))
        }
        if phases_run.contains(ReflowPhasesRun::UpdatedImageData) {
            phases.push(DOMString::from("UpdatedImageData"))
        }

        LayoutResult::new(
            cx,
            global,
            phases,
            statistics.rebuilt_fragment_count,
            statistics.restyle_fragment_count,
            statistics.only_descendants_changed_count,
        )
    }

    fn Js_backtrace(_: &GlobalScope) {
        println!("Current JS stack:");
        let rust_stack = Backtrace::new();
        println!("Current Rust stack:\n{:?}", rust_stack);
    }

    fn Panic(_: &GlobalScope) {
        panic!("explicit panic from script")
    }

    fn EnsureAccessibilityActive(global: &GlobalScope) {
        let window = global.as_window();
        window
            .layout()
            .set_accessibility_active(true, Epoch::default());
    }

    fn ForceAccessibilityUpdate(
        cx: &mut JSContext,
        global: &GlobalScope,
    ) -> DomRoot<AccessibilityUpdateResult> {
        let window = global.as_window();
        window.layout().set_needs_accessibility_update();
        let (_, statistics) = window.Document().update_the_rendering(cx);

        AccessibilityUpdateResult::new(
            cx,
            global,
            statistics.nodes_updated_from_dom,
            statistics.nodes_updated_from_tree,
            statistics.nodes_in_tree_update,
        )
    }
}