LibWeb/HTML: Implement TextTrackCue idl interface

Author: https://github.com/jamierocks Commit: 0b2449d8d2 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1494 Reviewed-by: https://github.com/AtkinsSJ Reviewed-by: https://github.com/tcl3 ✅
2025-06-05 01:42:54 +00:00 · 2024-09-19 19:41:57 +01:00 · 2024-09-19 19:41:57 +01:00 · 0b2449d8d2 · 2024-09-24 22:50:09 +00:00
commit 0b2449d8d2
parent e5877cda61
8 changed files with 174 additions and 0 deletions
--- a/Userland/Libraries/LibWeb/HTML/TextTrackCue.cpp
+++ b/Userland/Libraries/LibWeb/HTML/TextTrackCue.cpp
@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Math.h>
+#include <LibJS/Runtime/Realm.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Bindings/TextTrackCuePrototype.h>
+#include <LibWeb/HTML/EventNames.h>
+#include <LibWeb/HTML/TextTrackCue.h>
+
+namespace Web::HTML {
+
+JS_DEFINE_ALLOCATOR(TextTrackCue);
+
+TextTrackCue::TextTrackCue(JS::Realm& realm, JS::GCPtr<TextTrack> track)
+    : DOM::EventTarget(realm)
+    , m_track(track)
+{
+}
+
+TextTrackCue::~TextTrackCue() = default;
+
+void TextTrackCue::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TextTrackCue);
+}
+
+void TextTrackCue::visit_edges(JS::Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_track);
+}
+
+// https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcue-starttime
+void TextTrackCue::set_start_time(double start_time)
+{
+    // On setting, the text track cue start time must be set to the new value, interpreted in seconds;
+    m_start_time = start_time;
+
+    // FIXME: then, if the TextTrackCue object's text track cue is in a text track's list of cues, and that text track is in a media
+    //        element's list of text tracks, and the media element's show poster flag is not set, then run the time marches on steps
+    //        for that media element.
+}
+
+// https://html.spec.whatwg.org/multipage/media.html#dom-texttrackcue-endtime
+WebIDL::ExceptionOr<void> TextTrackCue::set_end_time(double end_time)
+{
+    // On setting, if the new value is negative Infinity or a Not-a-Number (NaN) value, then throw a TypeError exception.
+    if (end_time == -AK::Infinity<double> || isnan(end_time))
+        return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Value is negative infinity or NaN"_string };
+
+    // Otherwise, the text track cue end time must be set to the new value.
+    m_end_time = end_time;
+
+    // FIXME: Then, if the TextTrackCue object's text track cue is in a text track's list of cues, and that text track is in a media
+    //        element's list of text tracks, and the media element's show poster flag is not set, then run the time marches on steps
+    //        for that media element.
+    return {};
+}
+
+// https://html.spec.whatwg.org/multipage/media.html#handler-texttrackcue-onenter
+WebIDL::CallbackType* TextTrackCue::onenter()
+{
+    return event_handler_attribute(HTML::EventNames::enter);
+}
+
+// https://html.spec.whatwg.org/multipage/media.html#handler-texttrackcue-onenter
+void TextTrackCue::set_onenter(WebIDL::CallbackType* event_handler)
+{
+    set_event_handler_attribute(HTML::EventNames::enter, event_handler);
+}
+
+// https://html.spec.whatwg.org/multipage/media.html#handler-texttrackcue-onexit
+WebIDL::CallbackType* TextTrackCue::onexit()
+{
+    return event_handler_attribute(HTML::EventNames::exit);
+}
+
+// https://html.spec.whatwg.org/multipage/media.html#handler-texttrackcue-onexit
+void TextTrackCue::set_onexit(WebIDL::CallbackType* event_handler)
+{
+    set_event_handler_attribute(HTML::EventNames::exit, event_handler);
+}
+
+}