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-rw-r--r--dom/svg/nsISVGPoint.cpp88
1 files changed, 88 insertions, 0 deletions
diff --git a/dom/svg/nsISVGPoint.cpp b/dom/svg/nsISVGPoint.cpp
new file mode 100644
index 000000000..1c1971004
--- /dev/null
+++ b/dom/svg/nsISVGPoint.cpp
@@ -0,0 +1,88 @@
+/* -*- 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 "nsISVGPoint.h"
+#include "DOMSVGPointList.h"
+#include "SVGPoint.h"
+#include "nsSVGElement.h"
+#include "nsError.h"
+#include "mozilla/dom/SVGPointBinding.h"
+
+// See the architecture comment in DOMSVGPointList.h.
+
+using namespace mozilla;
+
+// We could use NS_IMPL_CYCLE_COLLECTION(, except that in Unlink() we need to
+// clear our list's weak ref to us to be safe. (The other option would be to
+// not unlink and rely on the breaking of the other edges in the cycle, as
+// NS_SVG_VAL_IMPL_CYCLE_COLLECTION does.)
+NS_IMPL_CYCLE_COLLECTION_CLASS(nsISVGPoint)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsISVGPoint)
+ // We may not belong to a list, so we must null check tmp->mList.
+ if (tmp->mList) {
+ tmp->mList->mItems[tmp->mListIndex] = nullptr;
+ }
+NS_IMPL_CYCLE_COLLECTION_UNLINK(mList)
+NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsISVGPoint)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mList)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsISVGPoint)
+NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsISVGPoint)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsISVGPoint)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsISVGPoint)
+ NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+ NS_INTERFACE_MAP_ENTRY(nsISVGPoint)
+ NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+void
+nsISVGPoint::InsertingIntoList(DOMSVGPointList *aList,
+ uint32_t aListIndex,
+ bool aIsAnimValItem)
+{
+ MOZ_ASSERT(!HasOwner(), "Inserting item that already has an owner");
+
+ mList = aList;
+ mListIndex = aListIndex;
+ mIsReadonly = false;
+ mIsAnimValItem = aIsAnimValItem;
+
+ MOZ_ASSERT(IndexIsValid(), "Bad index for DOMSVGPoint!");
+}
+
+void
+nsISVGPoint::RemovingFromList()
+{
+ mPt = InternalItem();
+ mList = nullptr;
+ MOZ_ASSERT(!mIsReadonly, "mIsReadonly set for list");
+ mIsAnimValItem = false;
+}
+
+SVGPoint&
+nsISVGPoint::InternalItem()
+{
+ return mList->InternalList().mItems[mListIndex];
+}
+
+#ifdef DEBUG
+bool
+nsISVGPoint::IndexIsValid()
+{
+ return mListIndex < mList->InternalList().Length();
+}
+#endif
+