1 files changed, 73 insertions, 0 deletions
diff --git a/components/script/dom/visibilitystateentry.rs b/components/script/dom/visibilitystateentry.rs
new file mode 100644
index 00000000000..9dcf74a58e6
--- /dev/null
+++ b/components/script/dom/visibilitystateentry.rs
@@ -0,0 +1,73 @@
+/* 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 std::ops::Deref;
+
+use dom_struct::dom_struct;
+
+use crate::dom::bindings::codegen::Bindings::DocumentBinding::DocumentVisibilityState;
+use crate::dom::bindings::codegen::Bindings::PerformanceEntryBinding::PerformanceEntryMethods;
+use crate::dom::bindings::codegen::Bindings::VisibilityStateEntryBinding::VisibilityStateEntryMethods;
+use crate::dom::bindings::num::Finite;
+use crate::dom::bindings::reflector::reflect_dom_object;
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::bindings::str::DOMString;
+use crate::dom::globalscope::GlobalScope;
+use crate::dom::performanceentry::PerformanceEntry;
+
+#[dom_struct]
+pub struct VisibilityStateEntry {
+    entry: PerformanceEntry,
+}
+
+impl VisibilityStateEntry {
+    #[allow(crown::unrooted_must_root)]
+    fn new_inherited(state: DocumentVisibilityState, timestamp: f64) -> VisibilityStateEntry {
+        let name = match state {
+            DocumentVisibilityState::Visible => DOMString::from("visible"),
+            DocumentVisibilityState::Hidden => DOMString::from("hidden"),
+        };
+        VisibilityStateEntry {
+            entry: PerformanceEntry::new_inherited(
+                name,
+                DOMString::from("visibility-state"),
+                timestamp,
+                0.,
+            ),
+        }
+    }
+
+    pub fn new(
+        global: &GlobalScope,
+        state: DocumentVisibilityState,
+        timestamp: f64,
+    ) -> DomRoot<VisibilityStateEntry> {
+        reflect_dom_object(
+            Box::new(VisibilityStateEntry::new_inherited(state, timestamp)),
+            global,
+        )
+    }
+}
+
+impl VisibilityStateEntryMethods for VisibilityStateEntry {
+    /// <https://html.spec.whatwg.org/multipage/#visibilitystateentry-name>
+    fn Name(&self) -> DOMString {
+        self.entry.Name()
+    }
+
+    /// <https://html.spec.whatwg.org/multipage/#visibilitystateentry-entrytype>
+    fn EntryType(&self) -> DOMString {
+        self.entry.EntryType()
+    }
+
+    /// <https://html.spec.whatwg.org/multipage/#visibilitystateentry-starttime>
+    fn StartTime(&self) -> Finite<f64> {
+        self.entry.StartTime()
+    }
+
+    /// <https://html.spec.whatwg.org/multipage/#visibilitystateentry-duration>
+    fn Duration(&self) -> u32 {
+        *self.entry.Duration().deref() as u32
+    }
+}