Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 216 insertions, 0 deletions

diff --git a/dom/base/HighlightRegistry.cpp b/dom/base/HighlightRegistry.cpp
new file mode 100644
index 0000000000..c6c37d19c4
--- /dev/null
+++ b/dom/base/HighlightRegistry.cpp
@@ -0,0 +1,216 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 "HighlightRegistry.h"
+
+#include "mozilla/ErrorResult.h"
+#include "mozilla/CompactPair.h"
+
+#include "Document.h"
+#include "Highlight.h"
+#include "mozilla/dom/HighlightBinding.h"
+#include "PresShell.h"
+
+#include "nsAtom.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsFrameSelection.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(HighlightRegistry)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(HighlightRegistry)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocument)
+  for (auto const& iter : tmp->mHighlightsOrdered) {
+    iter.second()->RemoveFromHighlightRegistry(*tmp, *iter.first());
+  }
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mHighlightsOrdered)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(HighlightRegistry)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocument)
+  for (size_t i = 0; i < tmp->mHighlightsOrdered.Length(); ++i) {
+    NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mHighlightsOrdered[i].second())
+  }
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(HighlightRegistry)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(HighlightRegistry)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(HighlightRegistry)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+HighlightRegistry::HighlightRegistry(Document* aDocument)
+    : mDocument(aDocument) {}
+
+HighlightRegistry::~HighlightRegistry() {
+  for (auto const& iter : mHighlightsOrdered) {
+    iter.second()->RemoveFromHighlightRegistry(*this, *iter.first());
+  }
+}
+
+JSObject* HighlightRegistry::WrapObject(JSContext* aCx,
+                                        JS::Handle<JSObject*> aGivenProto) {
+  return HighlightRegistry_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void HighlightRegistry::MaybeAddRangeToHighlightSelection(
+    AbstractRange& aRange, Highlight& aHighlight) {
+  RefPtr<nsFrameSelection> frameSelection = GetFrameSelection();
+  if (!frameSelection) {
+    return;
+  }
+  MOZ_ASSERT(frameSelection->GetPresShell());
+  if (!frameSelection->GetPresShell()->GetDocument() ||
+      frameSelection->GetPresShell()->GetDocument() !=
+          aRange.GetComposedDocOfContainers()) {
+    // ranges that belong to a different document must not be added.
+    return;
+  }
+  for (auto const& iter : mHighlightsOrdered) {
+    if (iter.second() != &aHighlight) {
+      continue;
+    }
+
+    const RefPtr<const nsAtom> highlightName = iter.first();
+    frameSelection->AddHighlightSelectionRange(highlightName, aHighlight,
+                                               aRange);
+  }
+}
+
+void HighlightRegistry::MaybeRemoveRangeFromHighlightSelection(
+    AbstractRange& aRange, Highlight& aHighlight) {
+  RefPtr<nsFrameSelection> frameSelection = GetFrameSelection();
+  if (!frameSelection) {
+    return;
+  }
+  MOZ_ASSERT(frameSelection->GetPresShell());
+
+  for (auto const& iter : mHighlightsOrdered) {
+    if (iter.second() != &aHighlight) {
+      continue;
+    }
+
+    const RefPtr<const nsAtom> highlightName = iter.first();
+    frameSelection->RemoveHighlightSelectionRange(highlightName, aRange);
+  }
+}
+
+void HighlightRegistry::RemoveHighlightSelection(Highlight& aHighlight) {
+  RefPtr<nsFrameSelection> frameSelection = GetFrameSelection();
+  if (!frameSelection) {
+    return;
+  }
+  for (auto const& iter : mHighlightsOrdered) {
+    if (iter.second() != &aHighlight) {
+      continue;
+    }
+
+    const RefPtr<const nsAtom> highlightName = iter.first();
+    frameSelection->RemoveHighlightSelection(highlightName);
+  }
+}
+
+void HighlightRegistry::AddHighlightSelectionsToFrameSelection() {
+  if (mHighlightsOrdered.IsEmpty()) {
+    return;
+  }
+  RefPtr<nsFrameSelection> frameSelection = GetFrameSelection();
+  if (!frameSelection) {
+    return;
+  }
+  for (auto const& iter : mHighlightsOrdered) {
+    RefPtr<const nsAtom> highlightName = iter.first();
+    RefPtr<Highlight> highlight = iter.second();
+    frameSelection->AddHighlightSelection(highlightName, *highlight);
+  }
+}
+
+void HighlightRegistry::Set(const nsAString& aKey, Highlight& aValue,
+                            ErrorResult& aRv) {
+  HighlightRegistry_Binding::MaplikeHelpers::Set(this, aKey, aValue, aRv);
+  if (aRv.Failed()) {
+    return;
+  }
+  RefPtr<nsFrameSelection> frameSelection = GetFrameSelection();
+  RefPtr<nsAtom> highlightNameAtom = NS_AtomizeMainThread(aKey);
+  auto foundIter =
+      std::find_if(mHighlightsOrdered.begin(), mHighlightsOrdered.end(),
+                   [&highlightNameAtom](auto const& aElm) {
+                     return aElm.first() == highlightNameAtom;
+                   });
+  if (foundIter != mHighlightsOrdered.end()) {
+    foundIter->second()->RemoveFromHighlightRegistry(*this, *highlightNameAtom);
+    if (frameSelection) {
+      frameSelection->RemoveHighlightSelection(highlightNameAtom);
+    }
+    foundIter->second() = &aValue;
+  } else {
+    mHighlightsOrdered.AppendElement(
+        CompactPair<RefPtr<const nsAtom>, RefPtr<Highlight>>(highlightNameAtom,
+                                                             &aValue));
+  }
+  aValue.AddToHighlightRegistry(*this, *highlightNameAtom);
+  if (frameSelection) {
+    frameSelection->AddHighlightSelection(highlightNameAtom, aValue);
+  }
+}
+
+void HighlightRegistry::Clear(ErrorResult& aRv) {
+  HighlightRegistry_Binding::MaplikeHelpers::Clear(this, aRv);
+  if (aRv.Failed()) {
+    return;
+  }
+  auto frameSelection = GetFrameSelection();
+  AutoFrameSelectionBatcher batcher(__FUNCTION__);
+  batcher.AddFrameSelection(frameSelection);
+  for (auto const& iter : mHighlightsOrdered) {
+    const RefPtr<const nsAtom>& highlightName = iter.first();
+    const RefPtr<Highlight>& highlight = iter.second();
+    highlight->RemoveFromHighlightRegistry(*this, *highlightName);
+    if (frameSelection) {
+      // The selection batcher makes sure that no script is run in this call.
+      // However, `nsFrameSelection::RemoveHighlightSelection` is marked
+      // `MOZ_CAN_RUN_SCRIPT`, therefore `MOZ_KnownLive` is needed regardless.
+      frameSelection->RemoveHighlightSelection(MOZ_KnownLive(highlightName));
+    }
+  }
+
+  mHighlightsOrdered.Clear();
+}
+
+bool HighlightRegistry::Delete(const nsAString& aKey, ErrorResult& aRv) {
+  if (!HighlightRegistry_Binding::MaplikeHelpers::Delete(this, aKey, aRv)) {
+    return false;
+  }
+  RefPtr<nsAtom> highlightNameAtom = NS_AtomizeMainThread(aKey);
+  auto foundIter =
+      std::find_if(mHighlightsOrdered.cbegin(), mHighlightsOrdered.cend(),
+                   [&highlightNameAtom](auto const& aElm) {
+                     return aElm.first() == highlightNameAtom;
+                   });
+  MOZ_ASSERT(foundIter != mHighlightsOrdered.cend(),
+             "HighlightRegistry: maplike and internal data are out of sync!");
+
+  RefPtr<Highlight> highlight = foundIter->second();
+  mHighlightsOrdered.RemoveElementAt(foundIter);
+
+  if (auto frameSelection = GetFrameSelection()) {
+    frameSelection->RemoveHighlightSelection(highlightNameAtom);
+  }
+  highlight->RemoveFromHighlightRegistry(*this, *highlightNameAtom);
+  return true;
+}
+
+RefPtr<nsFrameSelection> HighlightRegistry::GetFrameSelection() {
+  return RefPtr<nsFrameSelection>(
+      mDocument->GetPresShell() ? mDocument->GetPresShell()->FrameSelection()
+                                : nullptr);
+}
+
+}  // namespace mozilla::dom