diff options
Diffstat (limited to 'editor/libeditor/AutoRangeArray.cpp')
| -rw-r--r-- | editor/libeditor/AutoRangeArray.cpp | 1144 |
1 files changed, 1144 insertions, 0 deletions
diff --git a/editor/libeditor/AutoRangeArray.cpp b/editor/libeditor/AutoRangeArray.cpp new file mode 100644 index 0000000000..ac598ac8f0 --- /dev/null +++ b/editor/libeditor/AutoRangeArray.cpp @@ -0,0 +1,1144 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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 "AutoRangeArray.h" + +#include "EditorDOMPoint.h" // for EditorDOMPoint, EditorDOMRange, etc +#include "EditorForwards.h" // for CollectChildrenOptions +#include "HTMLEditUtils.h" // for HTMLEditUtils +#include "HTMLEditHelpers.h" // for SplitNodeResult +#include "WSRunObject.h" // for WSRunScanner + +#include "mozilla/OwningNonNull.h" // for OwningNonNull +#include "mozilla/dom/Document.h" // for dom::Document +#include "mozilla/dom/HTMLBRElement.h" // for dom HTMLBRElement +#include "mozilla/dom/Selection.h" // for dom::Selection +#include "mozilla/dom/Text.h" // for dom::Text + +#include "gfxFontUtils.h" // for gfxFontUtils +#include "nsError.h" // for NS_SUCCESS_* and NS_ERROR_* +#include "nsFrameSelection.h" // for nsFrameSelection +#include "nsIContent.h" // for nsIContent +#include "nsINode.h" // for nsINode +#include "nsRange.h" // for nsRange +#include "nsTextFragment.h" // for nsTextFragment + +namespace mozilla { + +using namespace dom; + +/****************************************************************************** + * mozilla::AutoRangeArray + *****************************************************************************/ + +template AutoRangeArray::AutoRangeArray(const EditorDOMRange& aRange); +template AutoRangeArray::AutoRangeArray(const EditorRawDOMRange& aRange); +template AutoRangeArray::AutoRangeArray(const EditorDOMPoint& aRange); +template AutoRangeArray::AutoRangeArray(const EditorRawDOMPoint& aRange); + +AutoRangeArray::AutoRangeArray(const dom::Selection& aSelection) { + Initialize(aSelection); +} + +AutoRangeArray::AutoRangeArray(const AutoRangeArray& aOther) + : mAnchorFocusRange(aOther.mAnchorFocusRange), + mDirection(aOther.mDirection) { + mRanges.SetCapacity(aOther.mRanges.Length()); + for (const OwningNonNull<nsRange>& range : aOther.mRanges) { + RefPtr<nsRange> clonedRange = range->CloneRange(); + mRanges.AppendElement(std::move(clonedRange)); + } +} + +template <typename PointType> +AutoRangeArray::AutoRangeArray(const EditorDOMRangeBase<PointType>& aRange) { + MOZ_ASSERT(aRange.IsPositionedAndValid()); + RefPtr<nsRange> range = aRange.CreateRange(IgnoreErrors()); + if (NS_WARN_IF(!range) || NS_WARN_IF(!range->IsPositioned())) { + return; + } + mRanges.AppendElement(std::move(range)); +} + +template <typename PT, typename CT> +AutoRangeArray::AutoRangeArray(const EditorDOMPointBase<PT, CT>& aPoint) { + MOZ_ASSERT(aPoint.IsSetAndValid()); + RefPtr<nsRange> range = aPoint.CreateCollapsedRange(IgnoreErrors()); + if (NS_WARN_IF(!range) || NS_WARN_IF(!range->IsPositioned())) { + return; + } + mRanges.AppendElement(std::move(range)); +} + +AutoRangeArray::~AutoRangeArray() { + if (mSavedRanges.isSome()) { + ClearSavedRanges(); + } +} + +// static +bool AutoRangeArray::IsEditableRange(const dom::AbstractRange& aRange, + const Element& aEditingHost) { + // TODO: Perhaps, we should check whether the start/end boundaries are + // first/last point of non-editable element. + // See https://github.com/w3c/editing/issues/283#issuecomment-788654850 + EditorRawDOMPoint atStart(aRange.StartRef()); + const bool isStartEditable = + atStart.IsInContentNode() && + EditorUtils::IsEditableContent(*atStart.ContainerAs<nsIContent>(), + EditorUtils::EditorType::HTML) && + !HTMLEditUtils::IsNonEditableReplacedContent( + *atStart.ContainerAs<nsIContent>()); + if (!isStartEditable) { + return false; + } + + if (aRange.GetStartContainer() != aRange.GetEndContainer()) { + EditorRawDOMPoint atEnd(aRange.EndRef()); + const bool isEndEditable = + atEnd.IsInContentNode() && + EditorUtils::IsEditableContent(*atEnd.ContainerAs<nsIContent>(), + EditorUtils::EditorType::HTML) && + !HTMLEditUtils::IsNonEditableReplacedContent( + *atEnd.ContainerAs<nsIContent>()); + if (!isEndEditable) { + return false; + } + + // Now, both start and end points are editable, but if they are in + // different editing host, we cannot edit the range. + if (atStart.ContainerAs<nsIContent>() != atEnd.ContainerAs<nsIContent>() && + atStart.ContainerAs<nsIContent>()->GetEditingHost() != + atEnd.ContainerAs<nsIContent>()->GetEditingHost()) { + return false; + } + } + + // HTMLEditor does not support modifying outside `<body>` element for now. + nsINode* commonAncestor = aRange.GetClosestCommonInclusiveAncestor(); + return commonAncestor && commonAncestor->IsContent() && + commonAncestor->IsInclusiveDescendantOf(&aEditingHost); +} + +void AutoRangeArray::EnsureOnlyEditableRanges(const Element& aEditingHost) { + for (size_t i = mRanges.Length(); i > 0; i--) { + const OwningNonNull<nsRange>& range = mRanges[i - 1]; + if (!AutoRangeArray::IsEditableRange(range, aEditingHost)) { + mRanges.RemoveElementAt(i - 1); + } + } + mAnchorFocusRange = mRanges.IsEmpty() ? nullptr : mRanges.LastElement().get(); +} + +void AutoRangeArray::EnsureRangesInTextNode(const Text& aTextNode) { + auto GetOffsetInTextNode = [&aTextNode](const nsINode* aNode, + uint32_t aOffset) -> uint32_t { + MOZ_DIAGNOSTIC_ASSERT(aNode); + if (aNode == &aTextNode) { + return aOffset; + } + const nsIContent* anonymousDivElement = aTextNode.GetParent(); + MOZ_DIAGNOSTIC_ASSERT(anonymousDivElement); + MOZ_DIAGNOSTIC_ASSERT(anonymousDivElement->IsHTMLElement(nsGkAtoms::div)); + MOZ_DIAGNOSTIC_ASSERT(anonymousDivElement->GetFirstChild() == &aTextNode); + if (aNode == anonymousDivElement && aOffset == 0u) { + return 0u; // Point before the text node so that use start of the text. + } + MOZ_DIAGNOSTIC_ASSERT(aNode->IsInclusiveDescendantOf(anonymousDivElement)); + // Point after the text node so that use end of the text. + return aTextNode.TextDataLength(); + }; + for (uint32_t i : IntegerRange(mRanges.Length())) { + const OwningNonNull<nsRange>& range = mRanges[i]; + if (MOZ_LIKELY(range->GetStartContainer() == &aTextNode && + range->GetEndContainer() == &aTextNode)) { + continue; + } + range->SetStartAndEnd( + const_cast<Text*>(&aTextNode), + GetOffsetInTextNode(range->GetStartContainer(), range->StartOffset()), + const_cast<Text*>(&aTextNode), + GetOffsetInTextNode(range->GetEndContainer(), range->EndOffset())); + } + + if (MOZ_UNLIKELY(mRanges.Length() >= 2)) { + // For avoiding to handle same things in same range, we should drop and + // merge unnecessary ranges. Note that the ranges never overlap + // because selection ranges are not allowed it so that we need to check only + // end offset vs start offset of next one. + for (uint32_t i : Reversed(IntegerRange(mRanges.Length() - 1u))) { + MOZ_ASSERT(mRanges[i]->EndOffset() < mRanges[i + 1]->StartOffset()); + // XXX Should we delete collapsed range unless the index is 0? Without + // Selection API, such situation cannot happen so that `TextEditor` + // may behave unexpectedly. + if (MOZ_UNLIKELY(mRanges[i]->EndOffset() >= + mRanges[i + 1]->StartOffset())) { + const uint32_t newEndOffset = mRanges[i + 1]->EndOffset(); + mRanges.RemoveElementAt(i + 1); + if (MOZ_UNLIKELY(NS_WARN_IF(newEndOffset > mRanges[i]->EndOffset()))) { + // So, this case shouldn't happen. + mRanges[i]->SetStartAndEnd( + const_cast<Text*>(&aTextNode), mRanges[i]->StartOffset(), + const_cast<Text*>(&aTextNode), newEndOffset); + } + } + } + } +} + +Result<nsIEditor::EDirection, nsresult> +AutoRangeArray::ExtendAnchorFocusRangeFor( + const EditorBase& aEditorBase, nsIEditor::EDirection aDirectionAndAmount) { + MOZ_ASSERT(aEditorBase.IsEditActionDataAvailable()); + MOZ_ASSERT(mAnchorFocusRange); + MOZ_ASSERT(mAnchorFocusRange->IsPositioned()); + MOZ_ASSERT(mAnchorFocusRange->StartRef().IsSet()); + MOZ_ASSERT(mAnchorFocusRange->EndRef().IsSet()); + + if (!EditorUtils::IsFrameSelectionRequiredToExtendSelection( + aDirectionAndAmount, *this)) { + return aDirectionAndAmount; + } + + if (NS_WARN_IF(!aEditorBase.SelectionRef().RangeCount())) { + return Err(NS_ERROR_FAILURE); + } + + // At this point, the anchor-focus ranges must match for bidi information. + // See `EditorBase::AutoCaretBidiLevelManager`. + MOZ_ASSERT(aEditorBase.SelectionRef().GetAnchorFocusRange()->StartRef() == + mAnchorFocusRange->StartRef()); + MOZ_ASSERT(aEditorBase.SelectionRef().GetAnchorFocusRange()->EndRef() == + mAnchorFocusRange->EndRef()); + + RefPtr<nsFrameSelection> frameSelection = + aEditorBase.SelectionRef().GetFrameSelection(); + if (NS_WARN_IF(!frameSelection)) { + return Err(NS_ERROR_NOT_INITIALIZED); + } + + RefPtr<Element> editingHost; + if (aEditorBase.IsHTMLEditor()) { + editingHost = aEditorBase.AsHTMLEditor()->ComputeEditingHost(); + if (!editingHost) { + return Err(NS_ERROR_FAILURE); + } + } + + Result<RefPtr<nsRange>, nsresult> result(NS_ERROR_UNEXPECTED); + nsIEditor::EDirection directionAndAmountResult = aDirectionAndAmount; + switch (aDirectionAndAmount) { + case nsIEditor::eNextWord: + result = frameSelection->CreateRangeExtendedToNextWordBoundary<nsRange>(); + if (NS_WARN_IF(aEditorBase.Destroyed())) { + return Err(NS_ERROR_EDITOR_DESTROYED); + } + NS_WARNING_ASSERTION( + result.isOk(), + "nsFrameSelection::CreateRangeExtendedToNextWordBoundary() failed"); + // DeleteSelectionWithTransaction() doesn't handle these actions + // because it's inside batching, so don't confuse it: + directionAndAmountResult = nsIEditor::eNone; + break; + case nsIEditor::ePreviousWord: + result = + frameSelection->CreateRangeExtendedToPreviousWordBoundary<nsRange>(); + if (NS_WARN_IF(aEditorBase.Destroyed())) { + return Err(NS_ERROR_EDITOR_DESTROYED); + } + NS_WARNING_ASSERTION( + result.isOk(), + "nsFrameSelection::CreateRangeExtendedToPreviousWordBoundary() " + "failed"); + // DeleteSelectionWithTransaction() doesn't handle these actions + // because it's inside batching, so don't confuse it: + directionAndAmountResult = nsIEditor::eNone; + break; + case nsIEditor::eNext: + result = + frameSelection + ->CreateRangeExtendedToNextGraphemeClusterBoundary<nsRange>(); + if (NS_WARN_IF(aEditorBase.Destroyed())) { + return Err(NS_ERROR_EDITOR_DESTROYED); + } + NS_WARNING_ASSERTION(result.isOk(), + "nsFrameSelection::" + "CreateRangeExtendedToNextGraphemeClusterBoundary() " + "failed"); + // Don't set directionAndAmount to eNone (see Bug 502259) + break; + case nsIEditor::ePrevious: { + // Only extend the selection where the selection is after a UTF-16 + // surrogate pair or a variation selector. + // For other cases we don't want to do that, in order + // to make sure that pressing backspace will only delete the last + // typed character. + // XXX This is odd if the previous one is a sequence for a grapheme + // cluster. + const auto atStartOfSelection = GetFirstRangeStartPoint<EditorDOMPoint>(); + if (MOZ_UNLIKELY(NS_WARN_IF(!atStartOfSelection.IsSet()))) { + return Err(NS_ERROR_FAILURE); + } + + // node might be anonymous DIV, so we find better text node + const EditorDOMPoint insertionPoint = + aEditorBase.FindBetterInsertionPoint(atStartOfSelection); + if (MOZ_UNLIKELY(!insertionPoint.IsSet())) { + NS_WARNING( + "EditorBase::FindBetterInsertionPoint() failed, but ignored"); + return aDirectionAndAmount; + } + + if (!insertionPoint.IsInTextNode()) { + return aDirectionAndAmount; + } + + const nsTextFragment* data = + &insertionPoint.ContainerAs<Text>()->TextFragment(); + uint32_t offset = insertionPoint.Offset(); + if (!(offset > 1 && + data->IsLowSurrogateFollowingHighSurrogateAt(offset - 1)) && + !(offset > 0 && + gfxFontUtils::IsVarSelector(data->CharAt(offset - 1)))) { + return aDirectionAndAmount; + } + // Different from the `eNext` case, we look for character boundary. + // I'm not sure whether this inconsistency between "Delete" and + // "Backspace" is intentional or not. + result = frameSelection + ->CreateRangeExtendedToPreviousCharacterBoundary<nsRange>(); + if (NS_WARN_IF(aEditorBase.Destroyed())) { + return Err(NS_ERROR_EDITOR_DESTROYED); + } + NS_WARNING_ASSERTION( + result.isOk(), + "nsFrameSelection::" + "CreateRangeExtendedToPreviousGraphemeClusterBoundary() failed"); + break; + } + case nsIEditor::eToBeginningOfLine: + result = + frameSelection->CreateRangeExtendedToPreviousHardLineBreak<nsRange>(); + if (NS_WARN_IF(aEditorBase.Destroyed())) { + return Err(NS_ERROR_EDITOR_DESTROYED); + } + NS_WARNING_ASSERTION( + result.isOk(), + "nsFrameSelection::CreateRangeExtendedToPreviousHardLineBreak() " + "failed"); + directionAndAmountResult = nsIEditor::eNone; + break; + case nsIEditor::eToEndOfLine: + result = + frameSelection->CreateRangeExtendedToNextHardLineBreak<nsRange>(); + if (NS_WARN_IF(aEditorBase.Destroyed())) { + return Err(NS_ERROR_EDITOR_DESTROYED); + } + NS_WARNING_ASSERTION( + result.isOk(), + "nsFrameSelection::CreateRangeExtendedToNextHardLineBreak() failed"); + directionAndAmountResult = nsIEditor::eNext; + break; + default: + return aDirectionAndAmount; + } + + if (result.isErr()) { + return Err(result.inspectErr()); + } + RefPtr<nsRange> extendedRange(result.unwrap().forget()); + if (!extendedRange || NS_WARN_IF(!extendedRange->IsPositioned())) { + NS_WARNING("Failed to extend the range, but ignored"); + return directionAndAmountResult; + } + + // If the new range isn't editable, keep using the original range. + if (aEditorBase.IsHTMLEditor() && + !AutoRangeArray::IsEditableRange(*extendedRange, *editingHost)) { + return aDirectionAndAmount; + } + + if (NS_WARN_IF(!frameSelection->IsValidSelectionPoint( + extendedRange->GetStartContainer())) || + NS_WARN_IF(!frameSelection->IsValidSelectionPoint( + extendedRange->GetEndContainer()))) { + NS_WARNING("A range was extended to outer of selection limiter"); + return Err(NS_ERROR_FAILURE); + } + + // Swap focus/anchor range with the extended range. + DebugOnly<bool> found = false; + for (OwningNonNull<nsRange>& range : mRanges) { + if (range == mAnchorFocusRange) { + range = *extendedRange; + found = true; + break; + } + } + MOZ_ASSERT(found); + mAnchorFocusRange.swap(extendedRange); + return directionAndAmountResult; +} + +Result<bool, nsresult> +AutoRangeArray::ShrinkRangesIfStartFromOrEndAfterAtomicContent( + const HTMLEditor& aHTMLEditor, nsIEditor::EDirection aDirectionAndAmount, + IfSelectingOnlyOneAtomicContent aIfSelectingOnlyOneAtomicContent, + const Element* aEditingHost) { + if (IsCollapsed()) { + return false; + } + + switch (aDirectionAndAmount) { + case nsIEditor::eNext: + case nsIEditor::eNextWord: + case nsIEditor::ePrevious: + case nsIEditor::ePreviousWord: + break; + default: + return false; + } + + bool changed = false; + for (auto& range : mRanges) { + MOZ_ASSERT(!range->IsInSelection(), + "Changing range in selection may cause running script"); + Result<bool, nsresult> result = + WSRunScanner::ShrinkRangeIfStartsFromOrEndsAfterAtomicContent( + aHTMLEditor, range, aEditingHost); + if (result.isErr()) { + NS_WARNING( + "WSRunScanner::ShrinkRangeIfStartsFromOrEndsAfterAtomicContent() " + "failed"); + return Err(result.inspectErr()); + } + changed |= result.inspect(); + } + + if (mRanges.Length() == 1 && aIfSelectingOnlyOneAtomicContent == + IfSelectingOnlyOneAtomicContent::Collapse) { + MOZ_ASSERT(mRanges[0].get() == mAnchorFocusRange.get()); + if (mAnchorFocusRange->GetStartContainer() == + mAnchorFocusRange->GetEndContainer() && + mAnchorFocusRange->GetChildAtStartOffset() && + mAnchorFocusRange->StartRef().GetNextSiblingOfChildAtOffset() == + mAnchorFocusRange->GetChildAtEndOffset()) { + mAnchorFocusRange->Collapse(aDirectionAndAmount == nsIEditor::eNext || + aDirectionAndAmount == nsIEditor::eNextWord); + changed = true; + } + } + + return changed; +} + +bool AutoRangeArray::SaveAndTrackRanges(HTMLEditor& aHTMLEditor) { + if (mSavedRanges.isSome()) { + return false; + } + mSavedRanges.emplace(*this); + aHTMLEditor.RangeUpdaterRef().RegisterSelectionState(mSavedRanges.ref()); + mTrackingHTMLEditor = &aHTMLEditor; + return true; +} + +void AutoRangeArray::ClearSavedRanges() { + if (mSavedRanges.isNothing()) { + return; + } + OwningNonNull<HTMLEditor> htmlEditor(std::move(mTrackingHTMLEditor)); + MOZ_ASSERT(!mTrackingHTMLEditor); + htmlEditor->RangeUpdaterRef().DropSelectionState(mSavedRanges.ref()); + mSavedRanges.reset(); +} + +// static +void AutoRangeArray:: + UpdatePointsToSelectAllChildrenIfCollapsedInEmptyBlockElement( + EditorDOMPoint& aStartPoint, EditorDOMPoint& aEndPoint, + const Element& aEditingHost) { + // FYI: This was moved from + // https://searchfox.org/mozilla-central/rev/3419858c997f422e3e70020a46baae7f0ec6dacc/editor/libeditor/HTMLEditSubActionHandler.cpp#6743 + + // MOOSE major hack: + // The GetPointAtFirstContentOfLineOrParentBlockIfFirstContentOfBlock() and + // GetPointAfterFollowingLineBreakOrAtFollowingBlock() don't really do the + // right thing for collapsed ranges inside block elements that contain nothing + // but a solo <br>. It's easier/ to put a workaround here than to revamp + // them. :-( + if (aStartPoint != aEndPoint) { + return; + } + + if (!aStartPoint.IsInContentNode()) { + return; + } + + // XXX Perhaps, this should be more careful. This may not select only one + // node because this just check whether the block is empty or not, + // and may not select in non-editable block. However, for inline + // editing host case, it's right to look for block element without + // editable state check. Now, this method is used for preparation for + // other things. So, cannot write test for this method behavior. + // So, perhaps, we should get rid of this method and each caller should + // handle its job better. + Element* const maybeNonEditableBlockElement = + HTMLEditUtils::GetInclusiveAncestorElement( + *aStartPoint.ContainerAs<nsIContent>(), + HTMLEditUtils::ClosestBlockElement); + if (!maybeNonEditableBlockElement) { + return; + } + + // Make sure we don't go higher than our root element in the content tree + if (aEditingHost.IsInclusiveDescendantOf(maybeNonEditableBlockElement)) { + return; + } + + if (HTMLEditUtils::IsEmptyNode(*maybeNonEditableBlockElement)) { + aStartPoint.Set(maybeNonEditableBlockElement, 0u); + aEndPoint.SetToEndOf(maybeNonEditableBlockElement); + } +} + +/** + * Get the point before the line containing aPointInLine. + * + * @return If the line starts after a `<br>` element, returns next + * sibling of the `<br>` element. + * If the line is first line of a block, returns point of + * the block. + * NOTE: The result may be point of editing host. I.e., the container may be + * outside of editing host. + */ +static EditorDOMPoint +GetPointAtFirstContentOfLineOrParentBlockIfFirstContentOfBlock( + const EditorDOMPoint& aPointInLine, EditSubAction aEditSubAction, + const Element& aEditingHost) { + // FYI: This was moved from + // https://searchfox.org/mozilla-central/rev/3419858c997f422e3e70020a46baae7f0ec6dacc/editor/libeditor/HTMLEditSubActionHandler.cpp#6447 + + if (NS_WARN_IF(!aPointInLine.IsSet())) { + return EditorDOMPoint(); + } + + EditorDOMPoint point(aPointInLine); + // Start scanning from the container node if aPoint is in a text node. + // XXX Perhaps, IsInDataNode() must be expected. + if (point.IsInTextNode()) { + if (!point.GetContainer()->GetParentNode()) { + // Okay, can't promote any further + // XXX Why don't we return start of the text node? + return point; + } + // If there is a preformatted linefeed in the text node, let's return + // the point after it. + EditorDOMPoint atLastPreformattedNewLine = + HTMLEditUtils::GetPreviousPreformattedNewLineInTextNode<EditorDOMPoint>( + point); + if (atLastPreformattedNewLine.IsSet()) { + return atLastPreformattedNewLine.NextPoint(); + } + point.Set(point.GetContainer()); + } + + // Look back through any further inline nodes that aren't across a <br> + // from us, and that are enclosed in the same block. + // I.e., looking for start of current hard line. + constexpr HTMLEditUtils::WalkTreeOptions + ignoreNonEditableNodeAndStopAtBlockBoundary{ + HTMLEditUtils::WalkTreeOption::IgnoreNonEditableNode, + HTMLEditUtils::WalkTreeOption::StopAtBlockBoundary}; + for (nsIContent* previousEditableContent = HTMLEditUtils::GetPreviousContent( + point, ignoreNonEditableNodeAndStopAtBlockBoundary, &aEditingHost); + previousEditableContent && previousEditableContent->GetParentNode() && + !HTMLEditUtils::IsVisibleBRElement(*previousEditableContent) && + !HTMLEditUtils::IsBlockElement(*previousEditableContent); + previousEditableContent = HTMLEditUtils::GetPreviousContent( + point, ignoreNonEditableNodeAndStopAtBlockBoundary, &aEditingHost)) { + EditorDOMPoint atLastPreformattedNewLine = + HTMLEditUtils::GetPreviousPreformattedNewLineInTextNode<EditorDOMPoint>( + EditorRawDOMPoint::AtEndOf(*previousEditableContent)); + if (atLastPreformattedNewLine.IsSet()) { + return atLastPreformattedNewLine.NextPoint(); + } + point.Set(previousEditableContent); + } + + // Finding the real start for this point unless current line starts after + // <br> element. Look up the tree for as long as we are the first node in + // the container (typically, start of nearest block ancestor), and as long + // as we haven't hit the body node. + for (nsIContent* nearContent = HTMLEditUtils::GetPreviousContent( + point, ignoreNonEditableNodeAndStopAtBlockBoundary, &aEditingHost); + !nearContent && !point.IsContainerHTMLElement(nsGkAtoms::body) && + point.GetContainerParent(); + nearContent = HTMLEditUtils::GetPreviousContent( + point, ignoreNonEditableNodeAndStopAtBlockBoundary, &aEditingHost)) { + // Don't keep looking up if we have found a blockquote element to act on + // when we handle outdent. + // XXX Sounds like this is hacky. If possible, it should be check in + // outdent handler for consistency between edit sub-actions. + // We should check Chromium's behavior of outdent when Selection + // starts from `<blockquote>` and starts from first child of + // `<blockquote>`. + if (aEditSubAction == EditSubAction::eOutdent && + point.IsContainerHTMLElement(nsGkAtoms::blockquote)) { + break; + } + + // Don't walk past the editable section. Note that we need to check + // before walking up to a parent because we need to return the parent + // object, so the parent itself might not be in the editable area, but + // it's OK if we're not performing a block-level action. + bool blockLevelAction = + aEditSubAction == EditSubAction::eIndent || + aEditSubAction == EditSubAction::eOutdent || + aEditSubAction == EditSubAction::eSetOrClearAlignment || + aEditSubAction == EditSubAction::eCreateOrRemoveBlock; + // XXX So, does this check whether the container is removable or not? It + // seems that here can be rewritten as obviously what here tries to + // check. + if (!point.GetContainerParent()->IsInclusiveDescendantOf(&aEditingHost) && + (blockLevelAction || + !point.GetContainer()->IsInclusiveDescendantOf(&aEditingHost))) { + break; + } + + point.Set(point.GetContainer()); + } + return point; +} + +/** + * Get the point after the following line break or the block which breaks the + * line containing aPointInLine. + * + * @return If the line ends with a visible `<br>` element, returns + * the point after the `<br>` element. + * If the line ends with a preformatted linefeed, returns + * the point after the linefeed unless it's an invisible + * line break immediately before a block boundary. + * If the line ends with a block boundary, returns the + * point of the block. + */ +static EditorDOMPoint GetPointAfterFollowingLineBreakOrAtFollowingBlock( + const EditorDOMPoint& aPointInLine, const Element& aEditingHost) { + // FYI: This was moved from + // https://searchfox.org/mozilla-central/rev/3419858c997f422e3e70020a46baae7f0ec6dacc/editor/libeditor/HTMLEditSubActionHandler.cpp#6541 + + if (NS_WARN_IF(!aPointInLine.IsSet())) { + return EditorDOMPoint(); + } + + EditorDOMPoint point(aPointInLine); + // Start scanning from the container node if aPoint is in a text node. + // XXX Perhaps, IsInDataNode() must be expected. + if (point.IsInTextNode()) { + if (NS_WARN_IF(!point.GetContainer()->GetParentNode())) { + // Okay, can't promote any further + // XXX Why don't we return end of the text node? + return point; + } + EditorDOMPoint atNextPreformattedNewLine = + HTMLEditUtils::GetInclusiveNextPreformattedNewLineInTextNode< + EditorDOMPoint>(point); + if (atNextPreformattedNewLine.IsSet()) { + // If the linefeed is last character of the text node, it may be + // invisible if it's immediately before a block boundary. In such + // case, we should retrun the block boundary. + Element* maybeNonEditableBlockElement = nullptr; + if (HTMLEditUtils::IsInvisiblePreformattedNewLine( + atNextPreformattedNewLine, &maybeNonEditableBlockElement) && + maybeNonEditableBlockElement) { + // If the block is a parent of the editing host, let's return end + // of editing host. + if (maybeNonEditableBlockElement == &aEditingHost || + !maybeNonEditableBlockElement->IsInclusiveDescendantOf( + &aEditingHost)) { + return EditorDOMPoint::AtEndOf(*maybeNonEditableBlockElement); + } + // If it's invisible because of parent block boundary, return end + // of the block. Otherwise, i.e., it's followed by a child block, + // returns the point of the child block. + if (atNextPreformattedNewLine.ContainerAs<Text>() + ->IsInclusiveDescendantOf(maybeNonEditableBlockElement)) { + return EditorDOMPoint::AtEndOf(*maybeNonEditableBlockElement); + } + return EditorDOMPoint(maybeNonEditableBlockElement); + } + // Otherwise, return the point after the preformatted linefeed. + return atNextPreformattedNewLine.NextPoint(); + } + // want to be after the text node + point.SetAfter(point.GetContainer()); + NS_WARNING_ASSERTION(point.IsSet(), "Failed to set to after the text node"); + } + + // Look ahead through any further inline nodes that aren't across a <br> from + // us, and that are enclosed in the same block. + // XXX Currently, we stop block-extending when finding visible <br> element. + // This might be different from "block-extend" of execCommand spec. + // However, the spec is really unclear. + // XXX Probably, scanning only editable nodes is wrong for + // EditSubAction::eCreateOrRemoveBlock because it might be better to wrap + // existing inline elements even if it's non-editable. For example, + // following examples with insertParagraph causes different result: + // * <div contenteditable>foo[]<b contenteditable="false">bar</b></div> + // * <div contenteditable>foo[]<b>bar</b></div> + // * <div contenteditable>foo[]<b contenteditable="false">bar</b>baz</div> + // Only in the first case, after the caret position isn't wrapped with + // new <div> element. + constexpr HTMLEditUtils::WalkTreeOptions + ignoreNonEditableNodeAndStopAtBlockBoundary{ + HTMLEditUtils::WalkTreeOption::IgnoreNonEditableNode, + HTMLEditUtils::WalkTreeOption::StopAtBlockBoundary}; + for (nsIContent* nextEditableContent = HTMLEditUtils::GetNextContent( + point, ignoreNonEditableNodeAndStopAtBlockBoundary, &aEditingHost); + nextEditableContent && + !HTMLEditUtils::IsBlockElement(*nextEditableContent) && + nextEditableContent->GetParent(); + nextEditableContent = HTMLEditUtils::GetNextContent( + point, ignoreNonEditableNodeAndStopAtBlockBoundary, &aEditingHost)) { + EditorDOMPoint atFirstPreformattedNewLine = + HTMLEditUtils::GetInclusiveNextPreformattedNewLineInTextNode< + EditorDOMPoint>(EditorRawDOMPoint(nextEditableContent, 0)); + if (atFirstPreformattedNewLine.IsSet()) { + // If the linefeed is last character of the text node, it may be + // invisible if it's immediately before a block boundary. In such + // case, we should retrun the block boundary. + Element* maybeNonEditableBlockElement = nullptr; + if (HTMLEditUtils::IsInvisiblePreformattedNewLine( + atFirstPreformattedNewLine, &maybeNonEditableBlockElement) && + maybeNonEditableBlockElement) { + // If the block is a parent of the editing host, let's return end + // of editing host. + if (maybeNonEditableBlockElement == &aEditingHost || + !maybeNonEditableBlockElement->IsInclusiveDescendantOf( + &aEditingHost)) { + return EditorDOMPoint::AtEndOf(*maybeNonEditableBlockElement); + } + // If it's invisible because of parent block boundary, return end + // of the block. Otherwise, i.e., it's followed by a child block, + // returns the point of the child block. + if (atFirstPreformattedNewLine.ContainerAs<Text>() + ->IsInclusiveDescendantOf(maybeNonEditableBlockElement)) { + return EditorDOMPoint::AtEndOf(*maybeNonEditableBlockElement); + } + return EditorDOMPoint(maybeNonEditableBlockElement); + } + // Otherwise, return the point after the preformatted linefeed. + return atFirstPreformattedNewLine.NextPoint(); + } + point.SetAfter(nextEditableContent); + if (NS_WARN_IF(!point.IsSet())) { + break; + } + if (HTMLEditUtils::IsVisibleBRElement(*nextEditableContent)) { + break; + } + } + + // Finding the real end for this point unless current line ends with a <br> + // element. Look up the tree for as long as we are the last node in the + // container (typically, block node), and as long as we haven't hit the body + // node. + for (nsIContent* nearContent = HTMLEditUtils::GetNextContent( + point, ignoreNonEditableNodeAndStopAtBlockBoundary, &aEditingHost); + !nearContent && !point.IsContainerHTMLElement(nsGkAtoms::body) && + point.GetContainerParent(); + nearContent = HTMLEditUtils::GetNextContent( + point, ignoreNonEditableNodeAndStopAtBlockBoundary, &aEditingHost)) { + // Don't walk past the editable section. Note that we need to check before + // walking up to a parent because we need to return the parent object, so + // the parent itself might not be in the editable area, but it's OK. + // XXX Maybe returning parent of editing host is really error prone since + // everybody need to check whether the end point is in editing host + // when they touch there. + if (!point.GetContainer()->IsInclusiveDescendantOf(&aEditingHost) && + !point.GetContainerParent()->IsInclusiveDescendantOf(&aEditingHost)) { + break; + } + + point.SetAfter(point.GetContainer()); + if (NS_WARN_IF(!point.IsSet())) { + break; + } + } + return point; +} + +void AutoRangeArray::ExtendRangesToWrapLinesToHandleBlockLevelEditAction( + EditSubAction aEditSubAction, const Element& aEditingHost) { + // FYI: This is originated in + // https://searchfox.org/mozilla-central/rev/1739f1301d658c9bff544a0a095ab11fca2e549d/editor/libeditor/HTMLEditSubActionHandler.cpp#6712 + + bool removeSomeRanges = false; + for (OwningNonNull<nsRange>& range : mRanges) { + // Remove non-positioned ranges. + if (MOZ_UNLIKELY(!range->IsPositioned())) { + removeSomeRanges = true; + continue; + } + // If the range is native anonymous subtrees, we must meet a bug of + // `Selection` so that we need to hack here. + if (MOZ_UNLIKELY(range->GetStartContainer()->IsInNativeAnonymousSubtree() || + range->GetEndContainer()->IsInNativeAnonymousSubtree())) { + EditorRawDOMRange rawRange(range); + if (!rawRange.EnsureNotInNativeAnonymousSubtree()) { + range->Reset(); + removeSomeRanges = true; + continue; + } + if (NS_FAILED( + range->SetStartAndEnd(rawRange.StartRef().ToRawRangeBoundary(), + rawRange.EndRef().ToRawRangeBoundary())) || + MOZ_UNLIKELY(!range->IsPositioned())) { + range->Reset(); + removeSomeRanges = true; + continue; + } + } + // Finally, extend the range. + if (NS_FAILED(ExtendRangeToWrapStartAndEndLinesContainingBoundaries( + range, aEditSubAction, aEditingHost))) { + // If we failed to extend the range, we should use the original range + // as-is unless the range is broken at setting the range. + if (NS_WARN_IF(!range->IsPositioned())) { + removeSomeRanges = true; + } + } + } + if (removeSomeRanges) { + for (size_t i : Reversed(IntegerRange(mRanges.Length()))) { + if (!mRanges[i]->IsPositioned()) { + mRanges.RemoveElementAt(i); + } + } + } +} + +// static +nsresult AutoRangeArray::ExtendRangeToWrapStartAndEndLinesContainingBoundaries( + nsRange& aRange, EditSubAction aEditSubAction, + const Element& aEditingHost) { + MOZ_DIAGNOSTIC_ASSERT( + !EditorRawDOMPoint(aRange.StartRef()).IsInNativeAnonymousSubtree()); + MOZ_DIAGNOSTIC_ASSERT( + !EditorRawDOMPoint(aRange.EndRef()).IsInNativeAnonymousSubtree()); + + if (NS_WARN_IF(!aRange.IsPositioned())) { + return NS_ERROR_INVALID_ARG; + } + + EditorDOMPoint startPoint(aRange.StartRef()), endPoint(aRange.EndRef()); + AutoRangeArray::UpdatePointsToSelectAllChildrenIfCollapsedInEmptyBlockElement( + startPoint, endPoint, aEditingHost); + + // Make a new adjusted range to represent the appropriate block content. + // This is tricky. The basic idea is to push out the range endpoints to + // truly enclose the blocks that we will affect. + + // Make sure that the new range ends up to be in the editable section. + // XXX Looks like that this check wastes the time. Perhaps, we should + // implement a method which checks both two DOM points in the editor + // root. + + startPoint = GetPointAtFirstContentOfLineOrParentBlockIfFirstContentOfBlock( + startPoint, aEditSubAction, aEditingHost); + // XXX GetPointAtFirstContentOfLineOrParentBlockIfFirstContentOfBlock() may + // return point of editing host. Perhaps, we should change it and stop + // checking it here since this check may be expensive. + // XXX If the container is an element in the editing host but it points end of + // the container, this returns nullptr. Is it intentional? + if (!startPoint.GetChildOrContainerIfDataNode() || + !startPoint.GetChildOrContainerIfDataNode()->IsInclusiveDescendantOf( + &aEditingHost)) { + return NS_ERROR_FAILURE; + } + endPoint = + GetPointAfterFollowingLineBreakOrAtFollowingBlock(endPoint, aEditingHost); + const EditorDOMPoint lastRawPoint = + endPoint.IsStartOfContainer() ? endPoint : endPoint.PreviousPoint(); + // XXX GetPointAfterFollowingLineBreakOrAtFollowingBlock() may return point of + // editing host. Perhaps, we should change it and stop checking it here + // since this check may be expensive. + // XXX If the container is an element in the editing host but it points end of + // the container, this returns nullptr. Is it intentional? + if (!lastRawPoint.GetChildOrContainerIfDataNode() || + !lastRawPoint.GetChildOrContainerIfDataNode()->IsInclusiveDescendantOf( + &aEditingHost)) { + return NS_ERROR_FAILURE; + } + + nsresult rv = aRange.SetStartAndEnd(startPoint.ToRawRangeBoundary(), + endPoint.ToRawRangeBoundary()); + if (NS_FAILED(rv)) { + return NS_ERROR_FAILURE; + } + return NS_OK; +} + +Result<EditorDOMPoint, nsresult> AutoRangeArray:: + SplitTextNodesAtEndBoundariesAndParentInlineElementsAtBoundaries( + HTMLEditor& aHTMLEditor) { + // FYI: The following code is originated in + // https://searchfox.org/mozilla-central/rev/c8e15e17bc6fd28f558c395c948a6251b38774ff/editor/libeditor/HTMLEditSubActionHandler.cpp#6971 + + // Split text nodes. This is necessary, since given ranges may end in text + // nodes in case where part of a pre-formatted elements needs to be moved. + EditorDOMPoint pointToPutCaret; + IgnoredErrorResult ignoredError; + for (const OwningNonNull<nsRange>& range : mRanges) { + EditorDOMPoint atEnd(range->EndRef()); + if (NS_WARN_IF(!atEnd.IsSet()) || !atEnd.IsInTextNode()) { + continue; + } + + if (!atEnd.IsStartOfContainer() && !atEnd.IsEndOfContainer()) { + // Split the text node. + Result<SplitNodeResult, nsresult> splitAtEndResult = + aHTMLEditor.SplitNodeWithTransaction(atEnd); + if (MOZ_UNLIKELY(splitAtEndResult.isErr())) { + NS_WARNING("HTMLEditor::SplitNodeWithTransaction() failed"); + return splitAtEndResult.propagateErr(); + } + SplitNodeResult unwrappedSplitAtEndResult = splitAtEndResult.unwrap(); + unwrappedSplitAtEndResult.MoveCaretPointTo( + pointToPutCaret, {SuggestCaret::OnlyIfHasSuggestion}); + + // Correct the range. + // The new end parent becomes the parent node of the text. + MOZ_ASSERT(!range->IsInSelection()); + range->SetEnd(unwrappedSplitAtEndResult.AtNextContent<EditorRawDOMPoint>() + .ToRawRangeBoundary(), + ignoredError); + NS_WARNING_ASSERTION(!ignoredError.Failed(), + "nsRange::SetEnd() failed, but ignored"); + ignoredError.SuppressException(); + } + } + + // FYI: The following code is originated in + // https://searchfox.org/mozilla-central/rev/c8e15e17bc6fd28f558c395c948a6251b38774ff/editor/libeditor/HTMLEditSubActionHandler.cpp#7023 + nsTArray<OwningNonNull<RangeItem>> rangeItemArray; + rangeItemArray.AppendElements(mRanges.Length()); + + // First register ranges for special editor gravity + for (OwningNonNull<RangeItem>& rangeItem : rangeItemArray) { + rangeItem = new RangeItem(); + rangeItem->StoreRange(*mRanges[0]); + aHTMLEditor.RangeUpdaterRef().RegisterRangeItem(*rangeItem); + // TODO: We should keep the array, and just update the ranges. + mRanges.RemoveElementAt(0); + } + // Now bust up inlines. + nsresult rv = NS_OK; + for (OwningNonNull<RangeItem>& item : Reversed(rangeItemArray)) { + // MOZ_KnownLive because 'rangeItemArray' is guaranteed to keep it alive. + Result<EditorDOMPoint, nsresult> splitParentsResult = + aHTMLEditor.SplitParentInlineElementsAtRangeEdges(MOZ_KnownLive(*item)); + if (MOZ_UNLIKELY(splitParentsResult.isErr())) { + NS_WARNING("HTMLEditor::SplitParentInlineElementsAtRangeEdges() failed"); + rv = splitParentsResult.unwrapErr(); + break; + } + if (splitParentsResult.inspect().IsSet()) { + pointToPutCaret = splitParentsResult.unwrap(); + } + } + // Then unregister the ranges + for (OwningNonNull<RangeItem>& item : rangeItemArray) { + aHTMLEditor.RangeUpdaterRef().DropRangeItem(item); + RefPtr<nsRange> range = item->GetRange(); + if (range) { + mRanges.AppendElement(std::move(range)); + } + } + + // XXX Why do we ignore the other errors here?? + if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) { + return Err(NS_ERROR_EDITOR_DESTROYED); + } + return pointToPutCaret; +} + +nsresult AutoRangeArray::CollectEditTargetNodes( + const HTMLEditor& aHTMLEditor, + nsTArray<OwningNonNull<nsIContent>>& aOutArrayOfContents, + EditSubAction aEditSubAction, + CollectNonEditableNodes aCollectNonEditableNodes) const { + MOZ_ASSERT(aHTMLEditor.IsEditActionDataAvailable()); + + // FYI: This was moved from + // https://searchfox.org/mozilla-central/rev/4bce7d85ba4796dd03c5dcc7cfe8eee0e4c07b3b/editor/libeditor/HTMLEditSubActionHandler.cpp#7060 + + // Gather up a list of all the nodes + for (const OwningNonNull<nsRange>& range : mRanges) { + DOMSubtreeIterator iter; + nsresult rv = iter.Init(*range); + if (NS_FAILED(rv)) { + NS_WARNING("DOMSubtreeIterator::Init() failed"); + return rv; + } + if (aOutArrayOfContents.IsEmpty()) { + iter.AppendAllNodesToArray(aOutArrayOfContents); + } else { + AutoTArray<OwningNonNull<nsIContent>, 24> arrayOfTopChildren; + iter.AppendNodesToArray( + +[](nsINode& aNode, void* aArray) -> bool { + MOZ_ASSERT(aArray); + return !static_cast<nsTArray<OwningNonNull<nsIContent>>*>(aArray) + ->Contains(&aNode); + }, + arrayOfTopChildren, &aOutArrayOfContents); + aOutArrayOfContents.AppendElements(std::move(arrayOfTopChildren)); + } + if (aCollectNonEditableNodes == CollectNonEditableNodes::No) { + for (size_t i : Reversed(IntegerRange(aOutArrayOfContents.Length()))) { + if (!EditorUtils::IsEditableContent(aOutArrayOfContents[i], + EditorUtils::EditorType::HTML)) { + aOutArrayOfContents.RemoveElementAt(i); + } + } + } + } + + switch (aEditSubAction) { + case EditSubAction::eCreateOrRemoveBlock: { + // Certain operations should not act on li's and td's, but rather inside + // them. Alter the list as needed. + CollectChildrenOptions options = { + CollectChildrenOption::CollectListChildren, + CollectChildrenOption::CollectTableChildren}; + if (aCollectNonEditableNodes == CollectNonEditableNodes::No) { + options += CollectChildrenOption::IgnoreNonEditableChildren; + } + for (int32_t i = aOutArrayOfContents.Length() - 1; i >= 0; i--) { + OwningNonNull<nsIContent> content = aOutArrayOfContents[i]; + if (HTMLEditUtils::IsListItem(content)) { + aOutArrayOfContents.RemoveElementAt(i); + HTMLEditUtils::CollectChildren(*content, aOutArrayOfContents, i, + options); + } + } + // Empty text node shouldn't be selected if unnecessary + for (int32_t i = aOutArrayOfContents.Length() - 1; i >= 0; i--) { + if (Text* text = aOutArrayOfContents[i]->GetAsText()) { + // Don't select empty text except to empty block + if (!HTMLEditUtils::IsVisibleTextNode(*text)) { + aOutArrayOfContents.RemoveElementAt(i); + } + } + } + break; + } + case EditSubAction::eCreateOrChangeList: { + // XXX aCollectNonEditableNodes is ignored here. Maybe a bug. + CollectChildrenOptions options = { + CollectChildrenOption::CollectTableChildren}; + for (size_t i = aOutArrayOfContents.Length(); i > 0; i--) { + // Scan for table elements. If we find table elements other than + // table, replace it with a list of any editable non-table content + // because if a selection range starts from end in a table-cell and + // ends at or starts from outside the `<table>`, we need to make + // lists in each selected table-cells. + OwningNonNull<nsIContent> content = aOutArrayOfContents[i - 1]; + if (HTMLEditUtils::IsAnyTableElementButNotTable(content)) { + aOutArrayOfContents.RemoveElementAt(i - 1); + HTMLEditUtils::CollectChildren(content, aOutArrayOfContents, i - 1, + options); + } + } + // If there is only one node in the array, and it is a `<div>`, + // `<blockquote>` or a list element, then look inside of it until we + // find inner list or content. + if (aOutArrayOfContents.Length() != 1) { + break; + } + Element* deepestDivBlockquoteOrListElement = + HTMLEditUtils::GetInclusiveDeepestFirstChildWhichHasOneChild( + aOutArrayOfContents[0], + {HTMLEditUtils::WalkTreeOption::IgnoreNonEditableNode}, + nsGkAtoms::div, nsGkAtoms::blockquote, nsGkAtoms::ul, + nsGkAtoms::ol, nsGkAtoms::dl); + if (!deepestDivBlockquoteOrListElement) { + break; + } + if (deepestDivBlockquoteOrListElement->IsAnyOfHTMLElements( + nsGkAtoms::div, nsGkAtoms::blockquote)) { + aOutArrayOfContents.Clear(); + // XXX Before we're called, non-editable nodes are ignored. However, + // we may append non-editable nodes here. + HTMLEditUtils::CollectChildren(*deepestDivBlockquoteOrListElement, + aOutArrayOfContents, 0, {}); + break; + } + aOutArrayOfContents.ReplaceElementAt( + 0, OwningNonNull<nsIContent>(*deepestDivBlockquoteOrListElement)); + break; + } + case EditSubAction::eOutdent: + case EditSubAction::eIndent: + case EditSubAction::eSetPositionToAbsolute: { + // Indent/outdent already do something special for list items, but we + // still need to make sure we don't act on table elements + CollectChildrenOptions options = { + CollectChildrenOption::CollectListChildren, + CollectChildrenOption::CollectTableChildren}; + if (aCollectNonEditableNodes == CollectNonEditableNodes::No) { + options += CollectChildrenOption::IgnoreNonEditableChildren; + } + for (int32_t i = aOutArrayOfContents.Length() - 1; i >= 0; i--) { + OwningNonNull<nsIContent> content = aOutArrayOfContents[i]; + if (HTMLEditUtils::IsAnyTableElementButNotTable(content)) { + aOutArrayOfContents.RemoveElementAt(i); + HTMLEditUtils::CollectChildren(*content, aOutArrayOfContents, i, + options); + } + } + break; + } + default: + break; + } + + // Outdent should look inside of divs. + if (aEditSubAction == EditSubAction::eOutdent && + !aHTMLEditor.IsCSSEnabled()) { + CollectChildrenOptions options = {}; + if (aCollectNonEditableNodes == CollectNonEditableNodes::No) { + options += CollectChildrenOption::IgnoreNonEditableChildren; + } + for (int32_t i = aOutArrayOfContents.Length() - 1; i >= 0; i--) { + OwningNonNull<nsIContent> content = aOutArrayOfContents[i]; + if (content->IsHTMLElement(nsGkAtoms::div)) { + aOutArrayOfContents.RemoveElementAt(i); + HTMLEditUtils::CollectChildren(*content, aOutArrayOfContents, i, + options); + } + } + } + + return NS_OK; +} + +Element* AutoRangeArray::GetClosestAncestorAnyListElementOfRange() const { + for (const OwningNonNull<nsRange>& range : mRanges) { + nsINode* commonAncestorNode = range->GetClosestCommonInclusiveAncestor(); + if (MOZ_UNLIKELY(!commonAncestorNode)) { + continue; + } + for (Element* element : + commonAncestorNode->InclusiveAncestorsOfType<Element>()) { + if (HTMLEditUtils::IsAnyListElement(element)) { + return element; + } + } + } + return nullptr; +} + +} // namespace mozilla |