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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /editor/libeditor/AutoRangeArray.cpp
parentInitial commit. (diff)
downloadthunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz
thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'editor/libeditor/AutoRangeArray.cpp')
-rw-r--r--editor/libeditor/AutoRangeArray.cpp1195
1 files changed, 1195 insertions, 0 deletions
diff --git a/editor/libeditor/AutoRangeArray.cpp b/editor/libeditor/AutoRangeArray.cpp
new file mode 100644
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+++ b/editor/libeditor/AutoRangeArray.cpp
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+/* -*- 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));
+ }
+ mAnchorFocusRange = aOther.mAnchorFocusRange;
+}
+
+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(*range);
+ mAnchorFocusRange = 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(*range);
+ mAnchorFocusRange = 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);
+ continue;
+ }
+ // Special handling for `inert` attribute. If anchor node is inert, the
+ // range should be treated as not editable.
+ nsIContent* anchorContent =
+ mDirection == eDirNext
+ ? nsIContent::FromNode(range->GetStartContainer())
+ : nsIContent::FromNode(range->GetEndContainer());
+ if (anchorContent && HTMLEditUtils::ContentIsInert(*anchorContent)) {
+ mRanges.RemoveElementAt(i - 1);
+ continue;
+ }
+ // Additionally, if focus node is inert, the range should be collapsed to
+ // anchor node.
+ nsIContent* focusContent =
+ mDirection == eDirNext
+ ? nsIContent::FromNode(range->GetEndContainer())
+ : nsIContent::FromNode(range->GetStartContainer());
+ if (focusContent && focusContent != anchorContent &&
+ HTMLEditUtils::ContentIsInert(*focusContent)) {
+ range->Collapse(mDirection == eDirNext);
+ }
+ }
+ 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);
+ }
+
+ // By a preceding call of EnsureOnlyEditableRanges(), anchor/focus range may
+ // have been changed. In that case, we cannot use nsFrameSelection anymore.
+ // FIXME: We should make `nsFrameSelection::CreateRangeExtendedToSomewhere`
+ // work without `Selection` instance.
+ if (MOZ_UNLIKELY(
+ aEditorBase.SelectionRef().GetAnchorFocusRange()->StartRef() !=
+ mAnchorFocusRange->StartRef() ||
+ aEditorBase.SelectionRef().GetAnchorFocusRange()->EndRef() !=
+ mAnchorFocusRange->EndRef())) {
+ return aDirectionAndAmount;
+ }
+
+ 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->IsInAnySelection(),
+ "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);
+ }
+ }
+ if (!mAnchorFocusRange || !mAnchorFocusRange->IsPositioned()) {
+ if (mRanges.IsEmpty()) {
+ mAnchorFocusRange = nullptr;
+ } else {
+ mAnchorFocusRange = mRanges.LastElement();
+ }
+ }
+ }
+}
+
+// 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::SplitTextAtEndBoundariesAndInlineAncestorsAtBothBoundaries(
+ HTMLEditor& aHTMLEditor, const Element& aEditingHost,
+ const nsIContent* aAncestorLimiter /* = nullptr */) {
+ // 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() ||
+ atEnd.GetContainer() == aAncestorLimiter) {
+ 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->IsInAnySelection());
+ 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
+ AutoTArray<OwningNonNull<RangeItem>, 8> rangeItemArray;
+ rangeItemArray.AppendElements(mRanges.Length());
+
+ // First register ranges for special editor gravity
+ Maybe<size_t> anchorFocusRangeIndex;
+ for (size_t index : IntegerRange(rangeItemArray.Length())) {
+ rangeItemArray[index] = new RangeItem();
+ rangeItemArray[index]->StoreRange(*mRanges[index]);
+ aHTMLEditor.RangeUpdaterRef().RegisterRangeItem(*rangeItemArray[index]);
+ if (mRanges[index] == mAnchorFocusRange) {
+ anchorFocusRangeIndex = Some(index);
+ }
+ }
+ // TODO: We should keep the array, and just update the ranges.
+ mRanges.Clear();
+ mAnchorFocusRange = nullptr;
+ // 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.SplitParentInlineElementsAtRangeBoundaries(
+ MOZ_KnownLive(*item), aEditingHost, aAncestorLimiter);
+ if (MOZ_UNLIKELY(splitParentsResult.isErr())) {
+ NS_WARNING(
+ "HTMLEditor::SplitParentInlineElementsAtRangeBoundaries() failed");
+ rv = splitParentsResult.unwrapErr();
+ break;
+ }
+ if (splitParentsResult.inspect().IsSet()) {
+ pointToPutCaret = splitParentsResult.unwrap();
+ }
+ }
+ // Then unregister the ranges
+ for (size_t index : IntegerRange(rangeItemArray.Length())) {
+ aHTMLEditor.RangeUpdaterRef().DropRangeItem(rangeItemArray[index]);
+ RefPtr<nsRange> range = rangeItemArray[index]->GetRange();
+ if (range && range->IsPositioned()) {
+ if (anchorFocusRangeIndex.isSome() && index == *anchorFocusRangeIndex) {
+ mAnchorFocusRange = range;
+ }
+ mRanges.AppendElement(std::move(range));
+ }
+ }
+ if (!mAnchorFocusRange && !mRanges.IsEmpty()) {
+ mAnchorFocusRange = mRanges.LastElement();
+ }
+
+ // 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