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Diffstat (limited to '')
| -rw-r--r-- | dom/base/StaticRange.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/dom/base/StaticRange.cpp b/dom/base/StaticRange.cpp new file mode 100644 index 0000000000..0946e8f9bf --- /dev/null +++ b/dom/base/StaticRange.cpp @@ -0,0 +1,144 @@ +/* -*- 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 "mozilla/dom/StaticRange.h" +#include "mozilla/dom/StaticRangeBinding.h" +#include "nsContentUtils.h" +#include "nsINode.h" + +namespace mozilla::dom { + +template already_AddRefed<StaticRange> StaticRange::Create( + const RangeBoundary& aStartBoundary, const RangeBoundary& aEndBoundary, + ErrorResult& aRv); +template already_AddRefed<StaticRange> StaticRange::Create( + const RangeBoundary& aStartBoundary, const RawRangeBoundary& aEndBoundary, + ErrorResult& aRv); +template already_AddRefed<StaticRange> StaticRange::Create( + const RawRangeBoundary& aStartBoundary, const RangeBoundary& aEndBoundary, + ErrorResult& aRv); +template already_AddRefed<StaticRange> StaticRange::Create( + const RawRangeBoundary& aStartBoundary, + const RawRangeBoundary& aEndBoundary, ErrorResult& aRv); +template nsresult StaticRange::SetStartAndEnd( + const RangeBoundary& aStartBoundary, const RangeBoundary& aEndBoundary); +template nsresult StaticRange::SetStartAndEnd( + const RangeBoundary& aStartBoundary, const RawRangeBoundary& aEndBoundary); +template nsresult StaticRange::SetStartAndEnd( + const RawRangeBoundary& aStartBoundary, const RangeBoundary& aEndBoundary); +template nsresult StaticRange::SetStartAndEnd( + const RawRangeBoundary& aStartBoundary, + const RawRangeBoundary& aEndBoundary); +template void StaticRange::DoSetRange(const RangeBoundary& aStartBoundary, + const RangeBoundary& aEndBoundary, + nsINode* aRootNode); +template void StaticRange::DoSetRange(const RangeBoundary& aStartBoundary, + const RawRangeBoundary& aEndBoundary, + nsINode* aRootNode); +template void StaticRange::DoSetRange(const RawRangeBoundary& aStartBoundary, + const RangeBoundary& aEndBoundary, + nsINode* aRootNode); +template void StaticRange::DoSetRange(const RawRangeBoundary& aStartBoundary, + const RawRangeBoundary& aEndBoundary, + nsINode* aRootNode); + +nsTArray<RefPtr<StaticRange>>* StaticRange::sCachedRanges = nullptr; + +NS_IMPL_CYCLE_COLLECTING_ADDREF(StaticRange) +NS_IMPL_CYCLE_COLLECTING_RELEASE_WITH_INTERRUPTABLE_LAST_RELEASE( + StaticRange, DoSetRange(RawRangeBoundary(), RawRangeBoundary(), nullptr), + AbstractRange::MaybeCacheToReuse(*this)) + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(StaticRange) +NS_INTERFACE_MAP_END_INHERITING(AbstractRange) + +NS_IMPL_CYCLE_COLLECTION_CLASS(StaticRange) + +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(StaticRange, AbstractRange) + NS_IMPL_CYCLE_COLLECTION_UNLINK(mStart) + NS_IMPL_CYCLE_COLLECTION_UNLINK(mEnd) +NS_IMPL_CYCLE_COLLECTION_UNLINK_END + +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(StaticRange, AbstractRange) +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END + +NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(StaticRange, AbstractRange) +NS_IMPL_CYCLE_COLLECTION_TRACE_END + +// static +already_AddRefed<StaticRange> StaticRange::Create(nsINode* aNode) { + MOZ_ASSERT(aNode); + if (!sCachedRanges || sCachedRanges->IsEmpty()) { + return do_AddRef(new StaticRange(aNode)); + } + RefPtr<StaticRange> staticRange = sCachedRanges->PopLastElement().forget(); + staticRange->Init(aNode); + return staticRange.forget(); +} + +// static +template <typename SPT, typename SRT, typename EPT, typename ERT> +already_AddRefed<StaticRange> StaticRange::Create( + const RangeBoundaryBase<SPT, SRT>& aStartBoundary, + const RangeBoundaryBase<EPT, ERT>& aEndBoundary, ErrorResult& aRv) { + RefPtr<StaticRange> staticRange = + StaticRange::Create(aStartBoundary.Container()); + staticRange->DoSetRange(aStartBoundary, aEndBoundary, nullptr); + + return staticRange.forget(); +} + +StaticRange::~StaticRange() { + DoSetRange(RawRangeBoundary(), RawRangeBoundary(), nullptr); +} + +bool StaticRange::IsValid() const { + if (!mStart.IsSetAndValid() || !mEnd.IsSetAndValid()) { + return false; + } + + const Maybe<int32_t> pointOrder = nsContentUtils::ComparePoints(mStart, mEnd); + return pointOrder.isSome() && *pointOrder <= 0; +} + +template <typename SPT, typename SRT, typename EPT, typename ERT> +void StaticRange::DoSetRange(const RangeBoundaryBase<SPT, SRT>& aStartBoundary, + const RangeBoundaryBase<EPT, ERT>& aEndBoundary, + nsINode* aRootNode) { + bool checkCommonAncestor = + IsInAnySelection() && (mStart.Container() != aStartBoundary.Container() || + mEnd.Container() != aEndBoundary.Container()); + mStart.CopyFrom(aStartBoundary, RangeBoundaryIsMutationObserved::No); + mEnd.CopyFrom(aEndBoundary, RangeBoundaryIsMutationObserved::No); + MOZ_ASSERT(mStart.IsSet() == mEnd.IsSet()); + mIsPositioned = mStart.IsSet() && mEnd.IsSet(); + + if (checkCommonAncestor) { + UpdateCommonAncestorIfNecessary(); + } +} + +/* static */ +already_AddRefed<StaticRange> StaticRange::Constructor( + const GlobalObject& global, const StaticRangeInit& init, ErrorResult& aRv) { + if (init.mStartContainer->NodeType() == nsINode::DOCUMENT_TYPE_NODE || + init.mStartContainer->NodeType() == nsINode::ATTRIBUTE_NODE || + init.mEndContainer->NodeType() == nsINode::DOCUMENT_TYPE_NODE || + init.mEndContainer->NodeType() == nsINode::ATTRIBUTE_NODE) { + aRv.Throw(NS_ERROR_DOM_INVALID_NODE_TYPE_ERR); + return nullptr; + } + + return Create(init.mStartContainer, init.mStartOffset, init.mEndContainer, + init.mEndOffset, aRv); +} + +JSObject* StaticRange::WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) { + return StaticRange_Binding::Wrap(aCx, this, aGivenProto); +} + +} // namespace mozilla::dom |