1 files changed, 54 insertions, 0 deletions
diff --git a/dom/grid/GridTrack.cpp b/dom/grid/GridTrack.cpp
new file mode 100644
index 0000000000..b2d9d0b3b3
--- /dev/null
+++ b/dom/grid/GridTrack.cpp
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+#include "GridTrack.h"
+
+#include "GridTracks.h"
+#include "mozilla/dom/GridBinding.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(GridTrack, mParent)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(GridTrack)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(GridTrack)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GridTrack)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+GridTrack::GridTrack(GridTracks* aParent)
+    : mParent(aParent),
+      mStart(0.0),
+      mBreadth(0.0),
+      mType(GridDeclaration::Implicit),
+      mState(GridTrackState::Static) {
+  MOZ_ASSERT(aParent, "Should never be instantiated with a null GridTracks");
+}
+
+GridTrack::~GridTrack() = default;
+
+JSObject* GridTrack::WrapObject(JSContext* aCx,
+                                JS::Handle<JSObject*> aGivenProto) {
+  return GridTrack_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+double GridTrack::Start() const { return mStart; }
+
+double GridTrack::Breadth() const { return mBreadth; }
+
+GridDeclaration GridTrack::Type() const { return mType; }
+
+GridTrackState GridTrack::State() const { return mState; }
+
+void GridTrack::SetTrackValues(double aStart, double aBreadth,
+                               GridDeclaration aType, GridTrackState aState) {
+  mStart = aStart;
+  mBreadth = aBreadth;
+  mType = aType;
+  mState = aState;
+}
+
+}  // namespace mozilla::dom