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fune/editor/libeditor/AutoRangeArray.cpp
Masayuki Nakano 4099ab71e0 Bug 1883562 - part 1: Make AutoBlockElementsJoiner work with one range r=m_kato 
It and its helper class, `AutoInclusiveAncestorBlockElementsJoiner` work with
multiple ranges, but they handle special cases only with the first range.
That means that deleting content will be different if same structure is selected
with multiple ranges and that must be not expected by the users.

Differential Revision: https://phabricator.services.mozilla.com/D203853
2024-03-11 08:01:50 +00:00

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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 "EditAction.h"
#include "EditorDOMPoint.h" // for EditorDOMPoint, EditorDOMRange, etc
#include "EditorForwards.h" // for CollectChildrenOptions
#include "HTMLEditUtils.h" // for HTMLEditUtils
#include "HTMLEditHelpers.h" // for SplitNodeResult
#include "TextEditor.h" // for TextEditor
#include "WSRunObject.h" // for WSRunScanner
#include "mozilla/IntegerRange.h" // for IntegerRange
#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;
using EmptyCheckOption = HTMLEditUtils::EmptyCheckOption;
/******************************************************************************
* 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();
}
}
AutoRangeArray::AutoRangeArray(nsRange& aRange) {
MOZ_ASSERT(aRange.IsPositioned());
if (NS_WARN_IF(!aRange.IsPositioned())) {
return;
}
mRanges.AppendElement(aRange);
mAnchorFocusRange = &aRange;
}
// 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 (const size_t index : Reversed(IntegerRange(mRanges.Length()))) {
const OwningNonNull<nsRange>& range = mRanges[index];
if (!AutoRangeArray::IsEditableRange(range, aEditingHost)) {
mRanges.RemoveElementAt(index);
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(index);
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 (const OwningNonNull<nsRange>& range : mRanges) {
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 (const size_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.IsTextEditor()
? aEditorBase.AsTextEditor()->FindBetterInsertionPoint(
atStartOfSelection)
: atStartOfSelection.GetPointInTextNodeIfPointingAroundTextNode<
EditorDOMPoint>();
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 (const OwningNonNull<nsRange>& 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,
BlockInlineCheck::UseComputedDisplayStyle);
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,
{EmptyCheckOption::TreatNonEditableContentAsInvisible})) {
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
GetPointAtFirstContentOfLineOrParentHTMLBlockIfFirstContentOfBlock(
const EditorDOMPoint& aPointInLine, EditSubAction aEditSubAction,
BlockInlineCheck aBlockInlineCheck, 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,
aBlockInlineCheck, &aEditingHost);
previousEditableContent && previousEditableContent->GetParentNode() &&
!HTMLEditUtils::IsVisibleBRElement(*previousEditableContent) &&
!HTMLEditUtils::IsBlockElement(*previousEditableContent,
aBlockInlineCheck);
previousEditableContent = HTMLEditUtils::GetPreviousContent(
point, ignoreNonEditableNodeAndStopAtBlockBoundary,
aBlockInlineCheck, &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,
aBlockInlineCheck, &aEditingHost);
!nearContent && !point.IsContainerHTMLElement(nsGkAtoms::body) &&
point.GetContainerParent();
nearContent = HTMLEditUtils::GetPreviousContent(
point, ignoreNonEditableNodeAndStopAtBlockBoundary,
aBlockInlineCheck, &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 ||
aEditSubAction == EditSubAction::eFormatBlockForHTMLCommand;
// 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;
}
// If we're formatting a block, we should reformat first ancestor format
// block.
if (aEditSubAction == EditSubAction::eFormatBlockForHTMLCommand &&
HTMLEditUtils::IsFormatElementForFormatBlockCommand(
*point.ContainerAs<Element>())) {
point.Set(point.GetContainer());
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 GetPointAfterFollowingLineBreakOrAtFollowingHTMLBlock(
const EditorDOMPoint& aPointInLine, EditSubAction aEditSubAction,
BlockInlineCheck aBlockInlineCheck, 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 return 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 and
// EditSubAction::eFormatBlockForHTMLCommand 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,
aBlockInlineCheck, &aEditingHost);
nextEditableContent &&
!HTMLEditUtils::IsBlockElement(*nextEditableContent,
aBlockInlineCheck) &&
nextEditableContent->GetParent();
nextEditableContent = HTMLEditUtils::GetNextContent(
point, ignoreNonEditableNodeAndStopAtBlockBoundary,
aBlockInlineCheck, &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 return 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,
aBlockInlineCheck, &aEditingHost);
!nearContent && !point.IsContainerHTMLElement(nsGkAtoms::body) &&
point.GetContainerParent();
nearContent = HTMLEditUtils::GetNextContent(
point, ignoreNonEditableNodeAndStopAtBlockBoundary,
aBlockInlineCheck, &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;
}
// If we're formatting a block, we should reformat first ancestor format
// block.
if (aEditSubAction == EditSubAction::eFormatBlockForHTMLCommand &&
HTMLEditUtils::IsFormatElementForFormatBlockCommand(
*point.ContainerAs<Element>())) {
point.SetAfter(point.GetContainer());
break;
}
point.SetAfter(point.GetContainer());
if (NS_WARN_IF(!point.IsSet())) {
break;
}
}
return point;
}
void AutoRangeArray::ExtendRangesToWrapLines(EditSubAction aEditSubAction,
BlockInlineCheck aBlockInlineCheck,
const Element& aEditingHost) {
// FYI: This is originated in
// https://searchfox.org/mozilla-central/rev/1739f1301d658c9bff544a0a095ab11fca2e549d/editor/libeditor/HTMLEditSubActionHandler.cpp#6712
bool removeSomeRanges = false;
for (const 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, aBlockInlineCheck, 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 (const 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,
BlockInlineCheck aBlockInlineCheck, 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());
// If we're joining blocks, we call this for selecting a line to move.
// Therefore, we don't want to select the ancestor blocks in this case
// even if they are empty.
if (aEditSubAction != EditSubAction::eMergeBlockContents) {
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 =
GetPointAtFirstContentOfLineOrParentHTMLBlockIfFirstContentOfBlock(
startPoint, aEditSubAction, aBlockInlineCheck, 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 = GetPointAfterFollowingLineBreakOrAtFollowingHTMLBlock(
endPoint, aEditSubAction, aBlockInlineCheck, 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, BlockInlineCheck aBlockInlineCheck,
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 (const 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 (const OwningNonNull<RangeItem>& item : Reversed(rangeItemArray)) {
// MOZ_KnownLive because 'rangeItemArray' is guaranteed to keep it alive.
Result<EditorDOMPoint, nsresult> splitParentsResult =
aHTMLEditor.SplitInlineAncestorsAtRangeBoundaries(
MOZ_KnownLive(*item), aBlockInlineCheck, aEditingHost,
aAncestorLimiter);
if (MOZ_UNLIKELY(splitParentsResult.isErr())) {
NS_WARNING("HTMLEditor::SplitInlineAncestorsAtRangeBoundaries() failed");
rv = splitParentsResult.unwrapErr();
break;
}
if (splitParentsResult.inspect().IsSet()) {
pointToPutCaret = splitParentsResult.unwrap();
}
}
// Then unregister the ranges
for (const 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 (const size_t i :
Reversed(IntegerRange(aOutArrayOfContents.Length()))) {
if (!EditorUtils::IsEditableContent(aOutArrayOfContents[i],
EditorUtils::EditorType::HTML)) {
aOutArrayOfContents.RemoveElementAt(i);
}
}
}
}
switch (aEditSubAction) {
case EditSubAction::eCreateOrRemoveBlock:
case EditSubAction::eFormatBlockForHTMLCommand: {
// 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;
}
if (aEditSubAction == EditSubAction::eCreateOrRemoveBlock) {
for (const size_t index :
Reversed(IntegerRange(aOutArrayOfContents.Length()))) {
OwningNonNull<nsIContent> content = aOutArrayOfContents[index];
if (HTMLEditUtils::IsListItem(content)) {
aOutArrayOfContents.RemoveElementAt(index);
HTMLEditUtils::CollectChildren(*content, aOutArrayOfContents, index,
options);
}
}
} else {
// <dd> and <dt> are format blocks. Therefore, we should not handle
// their children directly. They should be replaced with new format
// block.
MOZ_ASSERT(
HTMLEditUtils::IsFormatTagForFormatBlockCommand(*nsGkAtoms::dt));
MOZ_ASSERT(
HTMLEditUtils::IsFormatTagForFormatBlockCommand(*nsGkAtoms::dd));
for (const size_t index :
Reversed(IntegerRange(aOutArrayOfContents.Length()))) {
OwningNonNull<nsIContent> content = aOutArrayOfContents[index];
MOZ_ASSERT_IF(HTMLEditUtils::IsListItem(content),
content->IsAnyOfHTMLElements(
nsGkAtoms::dd, nsGkAtoms::dt, nsGkAtoms::li));
if (content->IsHTMLElement(nsGkAtoms::li)) {
aOutArrayOfContents.RemoveElementAt(index);
HTMLEditUtils::CollectChildren(*content, aOutArrayOfContents, index,
options);
}
}
}
// Empty text node shouldn't be selected if unnecessary
for (const size_t index :
Reversed(IntegerRange(aOutArrayOfContents.Length()))) {
if (const Text* text = aOutArrayOfContents[index]->GetAsText()) {
// Don't select empty text except to empty block
if (!HTMLEditUtils::IsVisibleTextNode(*text)) {
aOutArrayOfContents.RemoveElementAt(index);
}
}
}
break;
}
case EditSubAction::eCreateOrChangeList: {
// XXX aCollectNonEditableNodes is ignored here. Maybe a bug.
CollectChildrenOptions options = {
CollectChildrenOption::CollectTableChildren};
for (const size_t index :
Reversed(IntegerRange(aOutArrayOfContents.Length()))) {
// 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[index];
if (HTMLEditUtils::IsAnyTableElementButNotTable(content)) {
aOutArrayOfContents.RemoveElementAt(index);
HTMLEditUtils::CollectChildren(content, aOutArrayOfContents, index,
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},
BlockInlineCheck::Unused, 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 (const size_t index :
Reversed(IntegerRange(aOutArrayOfContents.Length()))) {
OwningNonNull<nsIContent> content = aOutArrayOfContents[index];
if (HTMLEditUtils::IsAnyTableElementButNotTable(content)) {
aOutArrayOfContents.RemoveElementAt(index);
HTMLEditUtils::CollectChildren(*content, aOutArrayOfContents, index,
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 (const size_t index :
Reversed(IntegerRange(aOutArrayOfContents.Length()))) {
OwningNonNull<nsIContent> content = aOutArrayOfContents[index];
if (content->IsHTMLElement(nsGkAtoms::div)) {
aOutArrayOfContents.RemoveElementAt(index);
HTMLEditUtils::CollectChildren(*content, aOutArrayOfContents, index,
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* const element :
commonAncestorNode->InclusiveAncestorsOfType<Element>()) {
if (HTMLEditUtils::IsAnyListElement(element)) {
return element;
}
}
}
return nullptr;
}
} // namespace mozilla
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