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/* -*- 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 "Highlight.h"
#include "AbstractRange.h"
#include "Document.h"
#include "HighlightRegistry.h"
#include "PresShell.h"
#include "Selection.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/RefPtr.h"
#include "mozilla/StaticAnalysisFunctions.h"
#include "mozilla/dom/HighlightBinding.h"
#include "nsFrameSelection.h"
#include "nsPIDOMWindow.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Highlight, mRanges, mWindow)
NS_IMPL_CYCLE_COLLECTING_ADDREF(Highlight)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Highlight)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Highlight)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
Highlight::Highlight(
const Sequence<OwningNonNull<AbstractRange>>& aInitialRanges,
nsPIDOMWindowInner* aWindow, ErrorResult& aRv)
: mWindow(aWindow) {
for (RefPtr<AbstractRange> range : aInitialRanges) {
Add(*range, aRv);
if (aRv.Failed()) {
return;
}
}
}
already_AddRefed<Highlight> Highlight::Constructor(
const GlobalObject& aGlobal,
const Sequence<OwningNonNull<AbstractRange>>& aInitialRanges,
ErrorResult& aRv) {
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsPIDOMWindowInner> window =
do_QueryInterface(aGlobal.GetAsSupports());
if (!window) {
aRv.ThrowUnknownError(
"There is no window associated to "
"this highlight object!");
return nullptr;
}
RefPtr<Highlight> highlight = new Highlight(aInitialRanges, window, aRv);
return aRv.Failed() ? nullptr : highlight.forget();
}
void Highlight::AddToHighlightRegistry(HighlightRegistry& aHighlightRegistry,
nsAtom& aHighlightName) {
mHighlightRegistries.LookupOrInsert(&aHighlightRegistry)
.Insert(&aHighlightName);
}
void Highlight::RemoveFromHighlightRegistry(
HighlightRegistry& aHighlightRegistry, nsAtom& aHighlightName) {
if (auto entry = mHighlightRegistries.Lookup(&aHighlightRegistry)) {
auto& highlightNames = entry.Data();
highlightNames.Remove(&aHighlightName);
if (highlightNames.IsEmpty()) {
entry.Remove();
}
}
}
already_AddRefed<Selection> Highlight::CreateHighlightSelection(
nsAtom* aHighlightName, nsFrameSelection* aFrameSelection) {
MOZ_ASSERT(aFrameSelection);
MOZ_ASSERT(aFrameSelection->GetPresShell());
RefPtr<Selection> selection =
MakeRefPtr<Selection>(SelectionType::eHighlight, aFrameSelection);
selection->SetHighlightSelectionData({aHighlightName, this});
AutoFrameSelectionBatcher selectionBatcher(__FUNCTION__);
for (const RefPtr<AbstractRange>& range : mRanges) {
if (range->GetComposedDocOfContainers() ==
aFrameSelection->GetPresShell()->GetDocument()) {
// since this is run in a context guarded by a selection batcher,
// no strong reference is needed to keep `range` alive.
selection->AddHighlightRangeAndSelectFramesAndNotifyListeners(
MOZ_KnownLive(*range));
}
}
return selection.forget();
}
void Highlight::Repaint() {
for (const RefPtr<HighlightRegistry>& registry :
mHighlightRegistries.Keys()) {
// since this is run in a context guarded by a selection batcher,
// no strong reference is needed to keep `registry` alive.
registry->RepaintHighlightSelection(*this);
}
}
void Highlight::SetPriority(int32_t aPriority) {
if (mPriority == aPriority) {
return;
}
mPriority = aPriority;
Repaint();
}
void Highlight::SetType(HighlightType aHighlightType) {
if (mHighlightType == aHighlightType) {
return;
}
mHighlightType = aHighlightType;
Repaint();
}
Highlight* Highlight::Add(AbstractRange& aRange, ErrorResult& aRv) {
// Manually check if the range `aKey` is already present in this highlight,
// because `SetlikeHelpers::Add()` doesn't indicate this.
// To keep the setlike and the mirrored array in sync, the range must not
// be added to `mRanges` if it was already present.
// `SetlikeHelpers::Has()` is much faster in checking this than
// `nsTArray<>::Contains()`.
if (Highlight_Binding::SetlikeHelpers::Has(this, aRange, aRv) ||
aRv.Failed()) {
return this;
}
Highlight_Binding::SetlikeHelpers::Add(this, aRange, aRv);
if (aRv.Failed()) {
return this;
}
MOZ_ASSERT(!mRanges.Contains(&aRange),
"setlike and DOM mirror are not in sync");
mRanges.AppendElement(&aRange);
AutoFrameSelectionBatcher selectionBatcher(__FUNCTION__,
mHighlightRegistries.Count());
for (const RefPtr<HighlightRegistry>& registry :
mHighlightRegistries.Keys()) {
auto frameSelection = registry->GetFrameSelection();
selectionBatcher.AddFrameSelection(frameSelection);
// since this is run in a context guarded by a selection batcher,
// no strong reference is needed to keep `registry` alive.
MOZ_KnownLive(registry)->MaybeAddRangeToHighlightSelection(aRange, *this);
if (aRv.Failed()) {
return this;
}
}
return this;
}
void Highlight::Clear(ErrorResult& aRv) {
Highlight_Binding::SetlikeHelpers::Clear(this, aRv);
if (!aRv.Failed()) {
mRanges.Clear();
AutoFrameSelectionBatcher selectionBatcher(__FUNCTION__,
mHighlightRegistries.Count());
for (const RefPtr<HighlightRegistry>& registry :
mHighlightRegistries.Keys()) {
auto frameSelection = registry->GetFrameSelection();
selectionBatcher.AddFrameSelection(frameSelection);
// since this is run in a context guarded by a selection batcher,
// no strong reference is needed to keep `registry` alive.
MOZ_KnownLive(registry)->RemoveHighlightSelection(*this);
}
}
}
bool Highlight::Delete(AbstractRange& aRange, ErrorResult& aRv) {
if (Highlight_Binding::SetlikeHelpers::Delete(this, aRange, aRv)) {
mRanges.RemoveElement(&aRange);
AutoFrameSelectionBatcher selectionBatcher(__FUNCTION__,
mHighlightRegistries.Count());
for (const RefPtr<HighlightRegistry>& registry :
mHighlightRegistries.Keys()) {
auto frameSelection = registry->GetFrameSelection();
selectionBatcher.AddFrameSelection(frameSelection);
// since this is run in a context guarded by a selection batcher,
// no strong reference is needed to keep `registry` alive.
MOZ_KnownLive(registry)->MaybeRemoveRangeFromHighlightSelection(aRange,
*this);
}
return true;
}
return false;
}
JSObject* Highlight::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return Highlight_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace mozilla::dom
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