dom/base/CrossShadowBoundaryRange.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/CrossShadowBoundaryRange.h"
   8 #include "nsContentUtils.h"
   9 #include "nsINode.h"
  10
  11 namespace mozilla::dom {
  12 template already_AddRefed<CrossShadowBoundaryRange>
  13 CrossShadowBoundaryRange::Create(const RangeBoundary& aStartBoundary,
  14                                  const RangeBoundary& aEndBoundary);
  15 template already_AddRefed<CrossShadowBoundaryRange>
  16 CrossShadowBoundaryRange::Create(const RangeBoundary& aStartBoundary,
  17                                  const RawRangeBoundary& aEndBoundary);
  18 template already_AddRefed<CrossShadowBoundaryRange>
  19 CrossShadowBoundaryRange::Create(const RawRangeBoundary& aStartBoundary,
  20                                  const RangeBoundary& aEndBoundary);
  21 template already_AddRefed<CrossShadowBoundaryRange>
  22 CrossShadowBoundaryRange::Create(const RawRangeBoundary& aStartBoundary,
  23                                  const RawRangeBoundary& aEndBoundary);
  24
  25 template void CrossShadowBoundaryRange::DoSetRange(
  26     const RangeBoundary& aStartBoundary, const RangeBoundary& aEndBoundary,
  27     nsINode* aRootNode);
  28 template void CrossShadowBoundaryRange::DoSetRange(
  29     const RangeBoundary& aStartBoundary, const RawRangeBoundary& aEndBoundary,
  30     nsINode* aRootNode);
  31 template void CrossShadowBoundaryRange::DoSetRange(
  32     const RawRangeBoundary& aStartBoundary, const RangeBoundary& aEndBoundary,
  33     nsINode* aRootNode);
  34 template void CrossShadowBoundaryRange::DoSetRange(
  35     const RawRangeBoundary& aStartBoundary,
  36     const RawRangeBoundary& aEndBoundary, nsINode* aRootNode);
  37
  38 template nsresult CrossShadowBoundaryRange::SetStartAndEnd(
  39     const RangeBoundary& aStartBoundary, const RangeBoundary& aEndBoundary);
  40 template nsresult CrossShadowBoundaryRange::SetStartAndEnd(
  41     const RangeBoundary& aStartBoundary, const RawRangeBoundary& aEndBoundary);
  42 template nsresult CrossShadowBoundaryRange::SetStartAndEnd(
  43     const RawRangeBoundary& aStartBoundary, const RangeBoundary& aEndBoundary);
  44 template nsresult CrossShadowBoundaryRange::SetStartAndEnd(
  45     const RawRangeBoundary& aStartBoundary,
  46     const RawRangeBoundary& aEndBoundary);
  47
  48 nsTArray<RefPtr<CrossShadowBoundaryRange>>*
  49     CrossShadowBoundaryRange::sCachedRanges = nullptr;
  50
  51 NS_IMPL_CYCLE_COLLECTING_ADDREF(CrossShadowBoundaryRange)
  52
  53 NS_IMPL_CYCLE_COLLECTING_RELEASE_WITH_INTERRUPTABLE_LAST_RELEASE(
  54     CrossShadowBoundaryRange,
  55     DoSetRange(RawRangeBoundary(), RawRangeBoundary(), nullptr),
  56     AbstractRange::MaybeCacheToReuse(*this))
  57
  58 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CrossShadowBoundaryRange)
  59 NS_INTERFACE_MAP_END_INHERITING(CrossShadowBoundaryRange)
  60
  61 NS_IMPL_CYCLE_COLLECTION_CLASS(CrossShadowBoundaryRange)
  62
  63 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(CrossShadowBoundaryRange,
  64                                                 StaticRange)
  65   NS_IMPL_CYCLE_COLLECTION_UNLINK(mCommonAncestor)
  66 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
  67
  68 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CrossShadowBoundaryRange,
  69                                                   StaticRange)
  70   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCommonAncestor)
  71 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
  72
  73 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(CrossShadowBoundaryRange,
  74                                                StaticRange)
  75 NS_IMPL_CYCLE_COLLECTION_TRACE_END
  76
  77 /* static */
  78 template <typename SPT, typename SRT, typename EPT, typename ERT>
  79 already_AddRefed<CrossShadowBoundaryRange> CrossShadowBoundaryRange::Create(
  80     const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
  81     const RangeBoundaryBase<EPT, ERT>& aEndBoundary) {
  82   RefPtr<CrossShadowBoundaryRange> range;
  83   if (!sCachedRanges || sCachedRanges->IsEmpty()) {
  84     range = new CrossShadowBoundaryRange(aStartBoundary.Container());
  85   } else {
  86     range = sCachedRanges->PopLastElement().forget();
  87   }
  88
  89   range->Init(aStartBoundary.Container());
  90   range->DoSetRange(aStartBoundary, aEndBoundary, nullptr);
  91   return range.forget();
  92 }
  93
  94 template <typename SPT, typename SRT, typename EPT, typename ERT>
  95 void CrossShadowBoundaryRange::DoSetRange(
  96     const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
  97     const RangeBoundaryBase<EPT, ERT>& aEndBoundary, nsINode* aRootNode) {
  98   // aRootNode is useless to CrossShadowBoundaryRange because aStartBoundary
  99   // and aEndBoundary could have different roots.
 100   StaticRange::DoSetRange(aStartBoundary, aEndBoundary, nullptr);
 101
 102   nsINode* startRoot = RangeUtils::ComputeRootNode(mStart.Container());
 103   nsINode* endRoot = RangeUtils::ComputeRootNode(mEnd.Container());
 104
 105   if (startRoot == endRoot) {
 106     // This should be the case when Release() is called.
 107     MOZ_ASSERT(!startRoot && !endRoot);
 108     mCommonAncestor = startRoot;
 109   } else {
 110     mCommonAncestor =
 111         nsContentUtils::GetClosestCommonShadowIncludingInclusiveAncestor(
 112             mStart.Container(), mEnd.Container());
 113   }
 114 }
 115 }  // namespace mozilla::dom