Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 206 insertions, 0 deletions

diff --git a/dom/svg/DOMSVGStringList.cpp b/dom/svg/DOMSVGStringList.cpp
new file mode 100644
index 0000000000..4f5c72ea17
--- /dev/null
+++ b/dom/svg/DOMSVGStringList.cpp
@@ -0,0 +1,206 @@
+/* -*- 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 "DOMSVGStringList.h"
+
+#include "mozAutoDocUpdate.h"
+#include "mozilla/dom/SVGStringListBinding.h"
+#include "mozilla/dom/SVGTests.h"
+#include "nsCOMPtr.h"
+#include "nsError.h"
+#include "nsQueryObject.h"
+#include "SVGAttrTearoffTable.h"
+#include <algorithm>
+
+// See the architecture comment in this file's header.
+
+namespace mozilla::dom {
+
+static inline SVGAttrTearoffTable<SVGStringList, DOMSVGStringList>&
+SVGStringListTearoffTable() {
+  static SVGAttrTearoffTable<SVGStringList, DOMSVGStringList>
+      sSVGStringListTearoffTable;
+  return sSVGStringListTearoffTable;
+}
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(DOMSVGStringList)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMSVGStringList)
+  // No unlinking of mElement, we'd need to null out the value pointer (the
+  // object it points to is held by the element) and null-check it everywhere.
+  tmp->RemoveFromTearoffTable();
+  NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGStringList)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mElement)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGStringList)
+  NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMSVGStringList)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMSVGStringList)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMSVGStringList)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+//----------------------------------------------------------------------
+// Helper class: AutoChangeStringListNotifier
+// Stack-based helper class to pair calls to WillChangeStringListList and
+// DidChangeStringListList.
+class MOZ_RAII AutoChangeStringListNotifier : public mozAutoDocUpdate {
+ public:
+  explicit AutoChangeStringListNotifier(DOMSVGStringList* aStringList)
+      : mozAutoDocUpdate(aStringList->mElement->GetComposedDoc(), true),
+        mStringList(aStringList) {
+    MOZ_ASSERT(mStringList, "Expecting non-null stringList");
+    mEmptyOrOldValue = mStringList->mElement->WillChangeStringList(
+        mStringList->mIsConditionalProcessingAttribute, mStringList->mAttrEnum,
+        *this);
+  }
+
+  ~AutoChangeStringListNotifier() {
+    mStringList->mElement->DidChangeStringList(
+        mStringList->mIsConditionalProcessingAttribute, mStringList->mAttrEnum,
+        mEmptyOrOldValue, *this);
+  }
+
+ private:
+  DOMSVGStringList* const mStringList;
+  nsAttrValue mEmptyOrOldValue;
+};
+
+/* static */
+already_AddRefed<DOMSVGStringList> DOMSVGStringList::GetDOMWrapper(
+    SVGStringList* aList, SVGElement* aElement,
+    bool aIsConditionalProcessingAttribute, uint8_t aAttrEnum) {
+  RefPtr<DOMSVGStringList> wrapper =
+      SVGStringListTearoffTable().GetTearoff(aList);
+  if (!wrapper) {
+    wrapper = new DOMSVGStringList(aElement, aIsConditionalProcessingAttribute,
+                                   aAttrEnum);
+    SVGStringListTearoffTable().AddTearoff(aList, wrapper);
+  }
+  return wrapper.forget();
+}
+
+void DOMSVGStringList::RemoveFromTearoffTable() {
+  // Script no longer has any references to us.
+  SVGStringListTearoffTable().RemoveTearoff(&InternalList());
+}
+
+DOMSVGStringList::~DOMSVGStringList() { RemoveFromTearoffTable(); }
+
+/* virtual */
+JSObject* DOMSVGStringList::WrapObject(JSContext* aCx,
+                                       JS::Handle<JSObject*> aGivenProto) {
+  return SVGStringList_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+// ----------------------------------------------------------------------------
+// SVGStringList implementation:
+
+uint32_t DOMSVGStringList::NumberOfItems() const {
+  return InternalList().Length();
+}
+
+uint32_t DOMSVGStringList::Length() const { return NumberOfItems(); }
+
+void DOMSVGStringList::Clear() {
+  if (InternalList().IsExplicitlySet()) {
+    AutoChangeStringListNotifier notifier(this);
+    InternalList().Clear();
+  }
+}
+
+void DOMSVGStringList::Initialize(const nsAString& aNewItem, nsAString& aRetval,
+                                  ErrorResult& aRv) {
+  if (InternalList().IsExplicitlySet()) {
+    InternalList().Clear();
+  }
+  InsertItemBefore(aNewItem, 0, aRetval, aRv);
+}
+
+void DOMSVGStringList::GetItem(uint32_t aIndex, nsAString& aRetval,
+                               ErrorResult& aRv) {
+  bool found;
+  IndexedGetter(aIndex, found, aRetval);
+  if (!found) {
+    aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
+  }
+}
+
+void DOMSVGStringList::IndexedGetter(uint32_t aIndex, bool& aFound,
+                                     nsAString& aRetval) {
+  aFound = aIndex < InternalList().Length();
+  if (aFound) {
+    aRetval = InternalList()[aIndex];
+  }
+}
+
+void DOMSVGStringList::InsertItemBefore(const nsAString& aNewItem,
+                                        uint32_t aIndex, nsAString& aRetval,
+                                        ErrorResult& aRv) {
+  if (aNewItem.IsEmpty()) {
+    aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
+    return;
+  }
+  aIndex = std::min(aIndex, InternalList().Length());
+
+  // Ensure we have enough memory so we can avoid complex error handling below:
+  if (!InternalList().SetCapacity(InternalList().Length() + 1)) {
+    aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
+    return;
+  }
+
+  AutoChangeStringListNotifier notifier(this);
+  InternalList().InsertItem(aIndex, aNewItem);
+  aRetval = aNewItem;
+}
+
+void DOMSVGStringList::ReplaceItem(const nsAString& aNewItem, uint32_t aIndex,
+                                   nsAString& aRetval, ErrorResult& aRv) {
+  if (aNewItem.IsEmpty()) {
+    aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
+    return;
+  }
+  if (aIndex >= InternalList().Length()) {
+    aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
+    return;
+  }
+
+  aRetval = InternalList()[aIndex];
+  AutoChangeStringListNotifier notifier(this);
+  InternalList().ReplaceItem(aIndex, aNewItem);
+}
+
+void DOMSVGStringList::RemoveItem(uint32_t aIndex, nsAString& aRetval,
+                                  ErrorResult& aRv) {
+  if (aIndex >= InternalList().Length()) {
+    aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
+    return;
+  }
+
+  AutoChangeStringListNotifier notifier(this);
+  InternalList().RemoveItem(aIndex);
+}
+
+void DOMSVGStringList::AppendItem(const nsAString& aNewItem, nsAString& aRetval,
+                                  ErrorResult& aRv) {
+  InsertItemBefore(aNewItem, InternalList().Length(), aRetval, aRv);
+}
+
+SVGStringList& DOMSVGStringList::InternalList() const {
+  if (mIsConditionalProcessingAttribute) {
+    nsCOMPtr<dom::SVGTests> tests = do_QueryObject(mElement);
+    return tests->mStringListAttributes[mAttrEnum];
+  }
+  return mElement->GetStringListInfo().mValues[mAttrEnum];
+}
+
+}  // namespace mozilla::dom