c6b4e944ef
It stores the editing host. However, its role is scan the DOM from a point in a block containing the point. Therefore, it can know which node is editing host when it scans without computing the editing host. So, it does not need to be specified the editing host. Then, it can scan non-editable DOM too. Therefore, this extends some utility methods of `HTMLEditUtils` which are used by `TextFragmentData` and `BoundaryData`. Differential Revision: https://phabricator.services.mozilla.com/D232937
1381 lines
59 KiB
C++
1381 lines
59 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WSRunScanner.h"
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#include "EditorDOMPoint.h"
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#include "EditorUtils.h"
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#include "HTMLEditUtils.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/dom/AncestorIterator.h"
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#include "nsCRT.h"
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#include "nsDebug.h"
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#include "nsIContent.h"
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#include "nsIContentInlines.h"
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#include "nsTextFragment.h"
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namespace mozilla {
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using namespace dom;
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using AncestorType = HTMLEditUtils::AncestorType;
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using AncestorTypes = HTMLEditUtils::AncestorTypes;
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using LeafNodeType = HTMLEditUtils::LeafNodeType;
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using LeafNodeTypes = HTMLEditUtils::LeafNodeTypes;
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template WSRunScanner::TextFragmentData::TextFragmentData(
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Scan aScanMode, const EditorDOMPoint& aPoint,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template WSRunScanner::TextFragmentData::TextFragmentData(
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Scan aScanMode, const EditorRawDOMPoint& aPoint,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template WSRunScanner::TextFragmentData::TextFragmentData(
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Scan aScanMode, const EditorDOMPointInText& aPoint,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template WSRunScanner::TextFragmentData::TextFragmentData(
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Scan aScanMode, const EditorRawDOMPointInText& aPoint,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetInclusiveNextCharPoint,
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const EditorDOMPoint& aPoint, BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aFollowingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetInclusiveNextCharPoint,
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const EditorRawDOMPoint& aPoint, BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aFollowingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetInclusiveNextCharPoint,
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const EditorDOMPointInText& aPoint, BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aFollowingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetInclusiveNextCharPoint,
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const EditorRawDOMPointInText& aPoint, BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aFollowingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetPreviousCharPoint,
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const EditorDOMPoint& aPoint, BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aPrecedingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetPreviousCharPoint,
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const EditorRawDOMPoint& aPoint, BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aPrecedingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetPreviousCharPoint,
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const EditorDOMPointInText& aPoint, BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aPrecedingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetPreviousCharPoint,
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const EditorRawDOMPointInText& aPoint, BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aPrecedingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetEndOfCollapsibleASCIIWhiteSpaces,
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const EditorDOMPointInText& aPointAtASCIIWhiteSpace,
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nsIEditor::EDirection aDirectionToDelete,
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BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aFollowingLimiterContent);
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NS_INSTANTIATE_METHOD_RETURNING_ANY_EDITOR_DOM_POINT(
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WSRunScanner::TextFragmentData::GetFirstASCIIWhiteSpacePointCollapsedTo,
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const EditorDOMPointInText& aPointAtASCIIWhiteSpace,
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nsIEditor::EDirection aDirectionToDelete,
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BlockInlineCheck aBlockInlineCheck,
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IgnoreNonEditableNodes aIgnoreNonEditableNodes,
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const nsIContent* aPrecedingLimiterContent);
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constexpr static const AncestorTypes kScanAnyRootAncestorTypes = {
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// If the point is in a block, we need to scan only in the block
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AncestorType::ClosestBlockElement,
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// So, we want a root element of the (shadow) tree root element of the
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// point
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// if there is no parent block
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AncestorType::AllowRootOrAncestorLimiterElement,
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// Basically, given point shouldn't be a void element, so, ignore
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// ancestor
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// void elements
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AncestorType::IgnoreHRElement};
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constexpr static const AncestorTypes kScanEditableRootAncestorTypes = {
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// Only editable elements
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AncestorType::EditableElement,
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// And the others are same as kScanAnyRootAncestorTypes
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AncestorType::ClosestBlockElement,
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AncestorType::AllowRootOrAncestorLimiterElement,
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AncestorType::IgnoreHRElement};
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template <typename EditorDOMPointType>
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WSRunScanner::TextFragmentData::TextFragmentData(
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Scan aScanMode, const EditorDOMPointType& aPoint,
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BlockInlineCheck aBlockInlineCheck,
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const Element* aAncestorLimiter /* = nullptr */)
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: mBlockInlineCheck(aBlockInlineCheck), mScanMode(aScanMode) {
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if (NS_WARN_IF(!aPoint.IsInContentNodeAndValidInComposedDoc()) ||
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NS_WARN_IF(!aPoint.GetContainerOrContainerParentElement())) {
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// We don't need to support composing in uncomposed tree.
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return;
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}
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MOZ_ASSERT_IF(
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aAncestorLimiter,
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aPoint.template ContainerAs<nsIContent>()->IsInclusiveDescendantOf(
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aAncestorLimiter));
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mScanStartPoint = aPoint.template To<EditorDOMPoint>();
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const Element* const
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editableBlockElementOrInlineEditingHostOrNonEditableRootElement =
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HTMLEditUtils::GetInclusiveAncestorElement(
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*mScanStartPoint.ContainerAs<nsIContent>(),
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aScanMode == Scan::EditableNodes ? kScanEditableRootAncestorTypes
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: kScanAnyRootAncestorTypes,
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aBlockInlineCheck, aAncestorLimiter);
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if (NS_WARN_IF(
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!editableBlockElementOrInlineEditingHostOrNonEditableRootElement)) {
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return;
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}
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mStart = BoundaryData::ScanCollapsibleWhiteSpaceStartFrom(
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mScanStartPoint, &mNBSPData, aBlockInlineCheck,
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ShouldStopAtNonEditableNode(aScanMode),
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*editableBlockElementOrInlineEditingHostOrNonEditableRootElement);
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MOZ_ASSERT_IF(mStart.IsNonCollapsibleCharacters(),
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!mStart.PointRef().IsPreviousCharPreformattedNewLine());
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MOZ_ASSERT_IF(mStart.IsPreformattedLineBreak(),
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mStart.PointRef().IsPreviousCharPreformattedNewLine());
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mEnd = BoundaryData::ScanCollapsibleWhiteSpaceEndFrom(
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mScanStartPoint, &mNBSPData, aBlockInlineCheck,
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ShouldStopAtNonEditableNode(aScanMode),
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*editableBlockElementOrInlineEditingHostOrNonEditableRootElement);
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MOZ_ASSERT_IF(mEnd.IsNonCollapsibleCharacters(),
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!mEnd.PointRef().IsCharPreformattedNewLine());
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MOZ_ASSERT_IF(mEnd.IsPreformattedLineBreak(),
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mEnd.PointRef().IsCharPreformattedNewLine());
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}
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// static
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template <typename EditorDOMPointType>
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Maybe<WSRunScanner::TextFragmentData::BoundaryData> WSRunScanner::
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TextFragmentData::BoundaryData::ScanCollapsibleWhiteSpaceStartInTextNode(
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const EditorDOMPointType& aPoint, NoBreakingSpaceData* aNBSPData,
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BlockInlineCheck aBlockInlineCheck) {
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MOZ_ASSERT(aPoint.IsSetAndValid());
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MOZ_DIAGNOSTIC_ASSERT(aPoint.IsInTextNode());
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const bool isWhiteSpaceCollapsible = !EditorUtils::IsWhiteSpacePreformatted(
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*aPoint.template ContainerAs<Text>());
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const bool isNewLineCollapsible =
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!EditorUtils::IsNewLinePreformatted(*aPoint.template ContainerAs<Text>());
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const nsTextFragment& textFragment =
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aPoint.template ContainerAs<Text>()->TextFragment();
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for (uint32_t i = std::min(aPoint.Offset(), textFragment.GetLength()); i;
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i--) {
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WSType wsTypeOfNonCollapsibleChar;
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switch (textFragment.CharAt(i - 1)) {
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case HTMLEditUtils::kSpace:
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case HTMLEditUtils::kCarriageReturn:
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case HTMLEditUtils::kTab:
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if (isWhiteSpaceCollapsible) {
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continue; // collapsible white-space or invisible white-space.
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}
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// preformatted white-space.
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wsTypeOfNonCollapsibleChar = WSType::NonCollapsibleCharacters;
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break;
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case HTMLEditUtils::kNewLine:
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if (isNewLineCollapsible) {
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continue; // collapsible linefeed.
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}
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// preformatted linefeed.
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wsTypeOfNonCollapsibleChar = WSType::PreformattedLineBreak;
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break;
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case HTMLEditUtils::kNBSP:
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if (isWhiteSpaceCollapsible) {
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if (aNBSPData) {
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aNBSPData->NotifyNBSP(
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EditorDOMPointInText(aPoint.template ContainerAs<Text>(),
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i - 1),
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NoBreakingSpaceData::Scanning::Backward);
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}
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continue;
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}
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// NBSP is never converted from collapsible white-space/linefeed.
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wsTypeOfNonCollapsibleChar = WSType::NonCollapsibleCharacters;
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break;
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default:
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MOZ_ASSERT(!nsCRT::IsAsciiSpace(textFragment.CharAt(i - 1)));
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wsTypeOfNonCollapsibleChar = WSType::NonCollapsibleCharacters;
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break;
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}
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return Some(BoundaryData(
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EditorDOMPoint(aPoint.template ContainerAs<Text>(), i),
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*aPoint.template ContainerAs<Text>(), wsTypeOfNonCollapsibleChar));
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}
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return Nothing();
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}
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// static
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template <typename EditorDOMPointType>
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WSRunScanner::TextFragmentData::BoundaryData WSRunScanner::TextFragmentData::
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BoundaryData::ScanCollapsibleWhiteSpaceStartFrom(
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const EditorDOMPointType& aPoint, NoBreakingSpaceData* aNBSPData,
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BlockInlineCheck aBlockInlineCheck,
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StopAtNonEditableNode aStopAtNonEditableNode,
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const Element& aAncestorLimiter) {
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MOZ_ASSERT(aPoint.IsSetAndValid());
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MOZ_ASSERT(HTMLEditUtils::IsSimplyEditableNode(*aPoint.GetContainer()) ==
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HTMLEditUtils::IsSimplyEditableNode(aAncestorLimiter));
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if (aPoint.IsInTextNode() && !aPoint.IsStartOfContainer()) {
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Maybe<BoundaryData> startInTextNode =
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BoundaryData::ScanCollapsibleWhiteSpaceStartInTextNode(
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aPoint, aNBSPData, aBlockInlineCheck);
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if (startInTextNode.isSome()) {
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return startInTextNode.ref();
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}
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// The text node does not have visible character, let's keep scanning
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// preceding nodes.
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return BoundaryData::ScanCollapsibleWhiteSpaceStartFrom(
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EditorDOMPoint(aPoint.template ContainerAs<Text>(), 0), aNBSPData,
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aBlockInlineCheck, aStopAtNonEditableNode, aAncestorLimiter);
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}
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// Then, we need to check previous leaf node.
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const auto leafNodeTypes =
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aStopAtNonEditableNode == StopAtNonEditableNode::Yes
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? LeafNodeTypes{LeafNodeType::LeafNodeOrNonEditableNode}
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: LeafNodeTypes{LeafNodeType::OnlyLeafNode};
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nsIContent* previousLeafContentOrBlock =
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HTMLEditUtils::GetPreviousLeafContentOrPreviousBlockElement(
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aPoint, leafNodeTypes, aBlockInlineCheck, &aAncestorLimiter);
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if (!previousLeafContentOrBlock) {
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// No previous content means that we reached the aAncestorLimiter boundary.
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return BoundaryData(
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aPoint, const_cast<Element&>(aAncestorLimiter),
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HTMLEditUtils::IsBlockElement(aAncestorLimiter, aBlockInlineCheck)
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? WSType::CurrentBlockBoundary
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: WSType::InlineEditingHostBoundary);
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}
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if (HTMLEditUtils::IsBlockElement(*previousLeafContentOrBlock,
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aBlockInlineCheck)) {
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return BoundaryData(aPoint, *previousLeafContentOrBlock,
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WSType::OtherBlockBoundary);
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}
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if (!previousLeafContentOrBlock->IsText() ||
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(aStopAtNonEditableNode == StopAtNonEditableNode::Yes &&
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HTMLEditUtils::IsSimplyEditableNode(*previousLeafContentOrBlock) !=
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HTMLEditUtils::IsSimplyEditableNode(aAncestorLimiter))) {
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// it's a break or a special node, like <img>, that is not a block and
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// not a break but still serves as a terminator to ws runs.
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return BoundaryData(aPoint, *previousLeafContentOrBlock,
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previousLeafContentOrBlock->IsHTMLElement(nsGkAtoms::br)
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? WSType::BRElement
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: WSType::SpecialContent);
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}
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if (!previousLeafContentOrBlock->AsText()->TextLength()) {
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// If it's an empty text node, keep looking for its previous leaf content.
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// Note that even if the empty text node is preformatted, we should keep
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// looking for the previous one.
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return BoundaryData::ScanCollapsibleWhiteSpaceStartFrom(
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EditorDOMPointInText(previousLeafContentOrBlock->AsText(), 0),
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aNBSPData, aBlockInlineCheck, aStopAtNonEditableNode, aAncestorLimiter);
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}
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Maybe<BoundaryData> startInTextNode =
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BoundaryData::ScanCollapsibleWhiteSpaceStartInTextNode(
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EditorDOMPointInText::AtEndOf(*previousLeafContentOrBlock->AsText()),
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aNBSPData, aBlockInlineCheck);
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if (startInTextNode.isSome()) {
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return startInTextNode.ref();
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}
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// The text node does not have visible character, let's keep scanning
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// preceding nodes.
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return BoundaryData::ScanCollapsibleWhiteSpaceStartFrom(
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EditorDOMPointInText(previousLeafContentOrBlock->AsText(), 0), aNBSPData,
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aBlockInlineCheck, aStopAtNonEditableNode, aAncestorLimiter);
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}
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// static
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template <typename EditorDOMPointType>
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Maybe<WSRunScanner::TextFragmentData::BoundaryData> WSRunScanner::
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TextFragmentData::BoundaryData::ScanCollapsibleWhiteSpaceEndInTextNode(
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const EditorDOMPointType& aPoint, NoBreakingSpaceData* aNBSPData,
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BlockInlineCheck aBlockInlineCheck) {
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MOZ_ASSERT(aPoint.IsSetAndValid());
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MOZ_DIAGNOSTIC_ASSERT(aPoint.IsInTextNode());
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const bool isWhiteSpaceCollapsible = !EditorUtils::IsWhiteSpacePreformatted(
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*aPoint.template ContainerAs<Text>());
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const bool isNewLineCollapsible =
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!EditorUtils::IsNewLinePreformatted(*aPoint.template ContainerAs<Text>());
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const nsTextFragment& textFragment =
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aPoint.template ContainerAs<Text>()->TextFragment();
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for (uint32_t i = aPoint.Offset(); i < textFragment.GetLength(); i++) {
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WSType wsTypeOfNonCollapsibleChar;
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switch (textFragment.CharAt(i)) {
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case HTMLEditUtils::kSpace:
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case HTMLEditUtils::kCarriageReturn:
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case HTMLEditUtils::kTab:
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if (isWhiteSpaceCollapsible) {
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continue; // collapsible white-space or invisible white-space.
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}
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// preformatted white-space.
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wsTypeOfNonCollapsibleChar = WSType::NonCollapsibleCharacters;
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break;
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case HTMLEditUtils::kNewLine:
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if (isNewLineCollapsible) {
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continue; // collapsible linefeed.
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}
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// preformatted linefeed.
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wsTypeOfNonCollapsibleChar = WSType::PreformattedLineBreak;
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break;
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case HTMLEditUtils::kNBSP:
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if (isWhiteSpaceCollapsible) {
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if (aNBSPData) {
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aNBSPData->NotifyNBSP(
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EditorDOMPointInText(aPoint.template ContainerAs<Text>(), i),
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NoBreakingSpaceData::Scanning::Forward);
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}
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continue;
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}
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// NBSP is never converted from collapsible white-space/linefeed.
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wsTypeOfNonCollapsibleChar = WSType::NonCollapsibleCharacters;
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break;
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default:
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MOZ_ASSERT(!nsCRT::IsAsciiSpace(textFragment.CharAt(i)));
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wsTypeOfNonCollapsibleChar = WSType::NonCollapsibleCharacters;
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break;
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}
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return Some(BoundaryData(
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EditorDOMPoint(aPoint.template ContainerAs<Text>(), i),
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*aPoint.template ContainerAs<Text>(), wsTypeOfNonCollapsibleChar));
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}
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return Nothing();
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}
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// static
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template <typename EditorDOMPointType>
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WSRunScanner::TextFragmentData::BoundaryData
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WSRunScanner::TextFragmentData::BoundaryData::ScanCollapsibleWhiteSpaceEndFrom(
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const EditorDOMPointType& aPoint, NoBreakingSpaceData* aNBSPData,
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BlockInlineCheck aBlockInlineCheck,
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StopAtNonEditableNode aStopAtNonEditableNode,
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const Element& aAncestorLimiter) {
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MOZ_ASSERT(aPoint.IsSetAndValid());
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MOZ_ASSERT(HTMLEditUtils::IsSimplyEditableNode(*aPoint.GetContainer()) ==
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HTMLEditUtils::IsSimplyEditableNode(aAncestorLimiter));
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if (aPoint.IsInTextNode() && !aPoint.IsEndOfContainer()) {
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Maybe<BoundaryData> endInTextNode =
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BoundaryData::ScanCollapsibleWhiteSpaceEndInTextNode(aPoint, aNBSPData,
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aBlockInlineCheck);
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if (endInTextNode.isSome()) {
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return endInTextNode.ref();
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}
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// The text node does not have visible character, let's keep scanning
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// following nodes.
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return BoundaryData::ScanCollapsibleWhiteSpaceEndFrom(
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EditorDOMPointInText::AtEndOf(*aPoint.template ContainerAs<Text>()),
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aNBSPData, aBlockInlineCheck, aStopAtNonEditableNode, aAncestorLimiter);
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}
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// Then, we need to check next leaf node.
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const auto leafNodeTypes =
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aStopAtNonEditableNode == StopAtNonEditableNode::Yes
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? LeafNodeTypes{LeafNodeType::LeafNodeOrNonEditableNode}
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: LeafNodeTypes{LeafNodeType::OnlyLeafNode};
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nsIContent* nextLeafContentOrBlock =
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HTMLEditUtils::GetNextLeafContentOrNextBlockElement(
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aPoint, leafNodeTypes, aBlockInlineCheck, &aAncestorLimiter);
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if (!nextLeafContentOrBlock) {
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// No next content means that we reached aAncestorLimiter boundary.
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return BoundaryData(
|
|
aPoint.template To<EditorDOMPoint>(),
|
|
const_cast<Element&>(aAncestorLimiter),
|
|
HTMLEditUtils::IsBlockElement(aAncestorLimiter, aBlockInlineCheck)
|
|
? WSType::CurrentBlockBoundary
|
|
: WSType::InlineEditingHostBoundary);
|
|
}
|
|
|
|
if (HTMLEditUtils::IsBlockElement(*nextLeafContentOrBlock,
|
|
aBlockInlineCheck)) {
|
|
// we encountered a new block. therefore no more ws.
|
|
return BoundaryData(aPoint, *nextLeafContentOrBlock,
|
|
WSType::OtherBlockBoundary);
|
|
}
|
|
|
|
if (!nextLeafContentOrBlock->IsText() ||
|
|
(aStopAtNonEditableNode == StopAtNonEditableNode::Yes &&
|
|
HTMLEditUtils::IsSimplyEditableNode(*nextLeafContentOrBlock) !=
|
|
HTMLEditUtils::IsSimplyEditableNode(aAncestorLimiter))) {
|
|
// we encountered a break or a special node, like <img>,
|
|
// that is not a block and not a break but still
|
|
// serves as a terminator to ws runs.
|
|
return BoundaryData(aPoint, *nextLeafContentOrBlock,
|
|
nextLeafContentOrBlock->IsHTMLElement(nsGkAtoms::br)
|
|
? WSType::BRElement
|
|
: WSType::SpecialContent);
|
|
}
|
|
|
|
if (!nextLeafContentOrBlock->AsText()->TextFragment().GetLength()) {
|
|
// If it's an empty text node, keep looking for its next leaf content.
|
|
// Note that even if the empty text node is preformatted, we should keep
|
|
// looking for the next one.
|
|
return BoundaryData::ScanCollapsibleWhiteSpaceEndFrom(
|
|
EditorDOMPointInText(nextLeafContentOrBlock->AsText(), 0), aNBSPData,
|
|
aBlockInlineCheck, aStopAtNonEditableNode, aAncestorLimiter);
|
|
}
|
|
|
|
Maybe<BoundaryData> endInTextNode =
|
|
BoundaryData::ScanCollapsibleWhiteSpaceEndInTextNode(
|
|
EditorDOMPointInText(nextLeafContentOrBlock->AsText(), 0), aNBSPData,
|
|
aBlockInlineCheck);
|
|
if (endInTextNode.isSome()) {
|
|
return endInTextNode.ref();
|
|
}
|
|
|
|
// The text node does not have visible character, let's keep scanning
|
|
// following nodes.
|
|
return BoundaryData::ScanCollapsibleWhiteSpaceEndFrom(
|
|
EditorDOMPointInText::AtEndOf(*nextLeafContentOrBlock->AsText()),
|
|
aNBSPData, aBlockInlineCheck, aStopAtNonEditableNode, aAncestorLimiter);
|
|
}
|
|
|
|
const EditorDOMRange&
|
|
WSRunScanner::TextFragmentData::InvisibleLeadingWhiteSpaceRangeRef() const {
|
|
if (mLeadingWhiteSpaceRange.isSome()) {
|
|
return mLeadingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
// If it's start of line, there is no invisible leading white-spaces.
|
|
if (!StartsFromHardLineBreak() && !StartsFromInlineEditingHostBoundary()) {
|
|
mLeadingWhiteSpaceRange.emplace();
|
|
return mLeadingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
// If there is no NBSP, all of the given range is leading white-spaces.
|
|
// Note that this result may be collapsed if there is no leading white-spaces.
|
|
if (!mNBSPData.FoundNBSP()) {
|
|
MOZ_ASSERT(mStart.PointRef().IsSet() || mEnd.PointRef().IsSet());
|
|
mLeadingWhiteSpaceRange.emplace(mStart.PointRef(), mEnd.PointRef());
|
|
return mLeadingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
MOZ_ASSERT(mNBSPData.LastPointRef().IsSetAndValid());
|
|
|
|
// Even if the first NBSP is the start, i.e., there is no invisible leading
|
|
// white-space, return collapsed range.
|
|
mLeadingWhiteSpaceRange.emplace(mStart.PointRef(), mNBSPData.FirstPointRef());
|
|
return mLeadingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
const EditorDOMRange&
|
|
WSRunScanner::TextFragmentData::InvisibleTrailingWhiteSpaceRangeRef() const {
|
|
if (mTrailingWhiteSpaceRange.isSome()) {
|
|
return mTrailingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
// If it's not immediately before a block boundary nor an invisible
|
|
// preformatted linefeed, there is no invisible trailing white-spaces. Note
|
|
// that collapsible white-spaces before a `<br>` element is visible.
|
|
if (!EndsByBlockBoundary() && !EndsByInlineEditingHostBoundary() &&
|
|
!EndsByInvisiblePreformattedLineBreak()) {
|
|
mTrailingWhiteSpaceRange.emplace();
|
|
return mTrailingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
// If there is no NBSP, all of the given range is trailing white-spaces.
|
|
// Note that this result may be collapsed if there is no trailing white-
|
|
// spaces.
|
|
if (!mNBSPData.FoundNBSP()) {
|
|
MOZ_ASSERT(mStart.PointRef().IsSet() || mEnd.PointRef().IsSet());
|
|
mTrailingWhiteSpaceRange.emplace(mStart.PointRef(), mEnd.PointRef());
|
|
return mTrailingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
MOZ_ASSERT(mNBSPData.LastPointRef().IsSetAndValid());
|
|
|
|
// If last NBSP is immediately before the end, there is no trailing white-
|
|
// spaces.
|
|
if (mEnd.PointRef().IsSet() &&
|
|
mNBSPData.LastPointRef().GetContainer() ==
|
|
mEnd.PointRef().GetContainer() &&
|
|
mNBSPData.LastPointRef().Offset() == mEnd.PointRef().Offset() - 1) {
|
|
mTrailingWhiteSpaceRange.emplace();
|
|
return mTrailingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
// Otherwise, the may be some trailing white-spaces.
|
|
MOZ_ASSERT(!mNBSPData.LastPointRef().IsEndOfContainer());
|
|
mTrailingWhiteSpaceRange.emplace(mNBSPData.LastPointRef().NextPoint(),
|
|
mEnd.PointRef());
|
|
return mTrailingWhiteSpaceRange.ref();
|
|
}
|
|
|
|
EditorDOMRangeInTexts
|
|
WSRunScanner::TextFragmentData::GetNonCollapsedRangeInTexts(
|
|
const EditorDOMRange& aRange) const {
|
|
if (!aRange.IsPositioned()) {
|
|
return EditorDOMRangeInTexts();
|
|
}
|
|
if (aRange.Collapsed()) {
|
|
// If collapsed, we can do nothing.
|
|
return EditorDOMRangeInTexts();
|
|
}
|
|
if (aRange.IsInTextNodes()) {
|
|
// Note that this may return a range which don't include any invisible
|
|
// white-spaces due to empty text nodes.
|
|
return aRange.GetAsInTexts();
|
|
}
|
|
|
|
const auto firstPoint =
|
|
aRange.StartRef().IsInTextNode()
|
|
? aRange.StartRef().AsInText()
|
|
: GetInclusiveNextCharPoint<EditorDOMPointInText>(
|
|
aRange.StartRef(),
|
|
ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
if (!firstPoint.IsSet()) {
|
|
return EditorDOMRangeInTexts();
|
|
}
|
|
EditorDOMPointInText endPoint;
|
|
if (aRange.EndRef().IsInTextNode()) {
|
|
endPoint = aRange.EndRef().AsInText();
|
|
} else {
|
|
// FYI: GetPreviousCharPoint() returns last character's point of preceding
|
|
// text node if it's not empty, but we need end of the text node here.
|
|
endPoint = GetPreviousCharPoint<EditorDOMPointInText>(
|
|
aRange.EndRef(),
|
|
ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
if (endPoint.IsSet() && endPoint.IsAtLastContent()) {
|
|
MOZ_ALWAYS_TRUE(endPoint.AdvanceOffset());
|
|
}
|
|
}
|
|
if (!endPoint.IsSet() || firstPoint == endPoint) {
|
|
return EditorDOMRangeInTexts();
|
|
}
|
|
return EditorDOMRangeInTexts(firstPoint, endPoint);
|
|
}
|
|
|
|
const WSRunScanner::VisibleWhiteSpacesData&
|
|
WSRunScanner::TextFragmentData::VisibleWhiteSpacesDataRef() const {
|
|
if (mVisibleWhiteSpacesData.isSome()) {
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
|
|
{
|
|
// If all things are obviously visible, we can return range for all of the
|
|
// things quickly.
|
|
const bool mayHaveInvisibleLeadingSpace =
|
|
!StartsFromNonCollapsibleCharacters() && !StartsFromSpecialContent();
|
|
const bool mayHaveInvisibleTrailingWhiteSpace =
|
|
!EndsByNonCollapsibleCharacters() && !EndsBySpecialContent() &&
|
|
!EndsByBRElement() && !EndsByInvisiblePreformattedLineBreak();
|
|
|
|
if (!mayHaveInvisibleLeadingSpace && !mayHaveInvisibleTrailingWhiteSpace) {
|
|
VisibleWhiteSpacesData visibleWhiteSpaces;
|
|
if (mStart.PointRef().IsSet()) {
|
|
visibleWhiteSpaces.SetStartPoint(mStart.PointRef());
|
|
}
|
|
visibleWhiteSpaces.SetStartFrom(mStart.RawReason());
|
|
if (mEnd.PointRef().IsSet()) {
|
|
visibleWhiteSpaces.SetEndPoint(mEnd.PointRef());
|
|
}
|
|
visibleWhiteSpaces.SetEndBy(mEnd.RawReason());
|
|
mVisibleWhiteSpacesData.emplace(visibleWhiteSpaces);
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
}
|
|
|
|
// If all of the range is invisible leading or trailing white-spaces,
|
|
// there is no visible content.
|
|
const EditorDOMRange& leadingWhiteSpaceRange =
|
|
InvisibleLeadingWhiteSpaceRangeRef();
|
|
const bool maybeHaveLeadingWhiteSpaces =
|
|
leadingWhiteSpaceRange.StartRef().IsSet() ||
|
|
leadingWhiteSpaceRange.EndRef().IsSet();
|
|
if (maybeHaveLeadingWhiteSpaces &&
|
|
leadingWhiteSpaceRange.StartRef() == mStart.PointRef() &&
|
|
leadingWhiteSpaceRange.EndRef() == mEnd.PointRef()) {
|
|
mVisibleWhiteSpacesData.emplace(VisibleWhiteSpacesData());
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
const EditorDOMRange& trailingWhiteSpaceRange =
|
|
InvisibleTrailingWhiteSpaceRangeRef();
|
|
const bool maybeHaveTrailingWhiteSpaces =
|
|
trailingWhiteSpaceRange.StartRef().IsSet() ||
|
|
trailingWhiteSpaceRange.EndRef().IsSet();
|
|
if (maybeHaveTrailingWhiteSpaces &&
|
|
trailingWhiteSpaceRange.StartRef() == mStart.PointRef() &&
|
|
trailingWhiteSpaceRange.EndRef() == mEnd.PointRef()) {
|
|
mVisibleWhiteSpacesData.emplace(VisibleWhiteSpacesData());
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
|
|
if (!StartsFromHardLineBreak() && !StartsFromInlineEditingHostBoundary()) {
|
|
VisibleWhiteSpacesData visibleWhiteSpaces;
|
|
if (mStart.PointRef().IsSet()) {
|
|
visibleWhiteSpaces.SetStartPoint(mStart.PointRef());
|
|
}
|
|
visibleWhiteSpaces.SetStartFrom(mStart.RawReason());
|
|
if (!maybeHaveTrailingWhiteSpaces) {
|
|
visibleWhiteSpaces.SetEndPoint(mEnd.PointRef());
|
|
visibleWhiteSpaces.SetEndBy(mEnd.RawReason());
|
|
mVisibleWhiteSpacesData = Some(visibleWhiteSpaces);
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
if (trailingWhiteSpaceRange.StartRef().IsSet()) {
|
|
visibleWhiteSpaces.SetEndPoint(trailingWhiteSpaceRange.StartRef());
|
|
}
|
|
visibleWhiteSpaces.SetEndByTrailingWhiteSpaces();
|
|
mVisibleWhiteSpacesData.emplace(visibleWhiteSpaces);
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
|
|
MOZ_ASSERT(StartsFromHardLineBreak() ||
|
|
StartsFromInlineEditingHostBoundary());
|
|
MOZ_ASSERT(maybeHaveLeadingWhiteSpaces);
|
|
|
|
VisibleWhiteSpacesData visibleWhiteSpaces;
|
|
if (leadingWhiteSpaceRange.EndRef().IsSet()) {
|
|
visibleWhiteSpaces.SetStartPoint(leadingWhiteSpaceRange.EndRef());
|
|
}
|
|
visibleWhiteSpaces.SetStartFromLeadingWhiteSpaces();
|
|
if (!EndsByBlockBoundary() && !EndsByInlineEditingHostBoundary()) {
|
|
// then no trailing ws. this normal run ends the overall ws run.
|
|
if (mEnd.PointRef().IsSet()) {
|
|
visibleWhiteSpaces.SetEndPoint(mEnd.PointRef());
|
|
}
|
|
visibleWhiteSpaces.SetEndBy(mEnd.RawReason());
|
|
mVisibleWhiteSpacesData.emplace(visibleWhiteSpaces);
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
|
|
MOZ_ASSERT(EndsByBlockBoundary() || EndsByInlineEditingHostBoundary());
|
|
|
|
if (!maybeHaveTrailingWhiteSpaces) {
|
|
// normal ws runs right up to adjacent block (nbsp next to block)
|
|
visibleWhiteSpaces.SetEndPoint(mEnd.PointRef());
|
|
visibleWhiteSpaces.SetEndBy(mEnd.RawReason());
|
|
mVisibleWhiteSpacesData.emplace(visibleWhiteSpaces);
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
|
|
if (trailingWhiteSpaceRange.StartRef().IsSet()) {
|
|
visibleWhiteSpaces.SetEndPoint(trailingWhiteSpaceRange.StartRef());
|
|
}
|
|
visibleWhiteSpaces.SetEndByTrailingWhiteSpaces();
|
|
mVisibleWhiteSpacesData.emplace(visibleWhiteSpaces);
|
|
return mVisibleWhiteSpacesData.ref();
|
|
}
|
|
|
|
ReplaceRangeData
|
|
WSRunScanner::TextFragmentData::GetReplaceRangeDataAtEndOfDeletionRange(
|
|
const TextFragmentData& aTextFragmentDataAtStartToDelete) const {
|
|
const EditorDOMPoint& startToDelete =
|
|
aTextFragmentDataAtStartToDelete.ScanStartRef();
|
|
const EditorDOMPoint& endToDelete = mScanStartPoint;
|
|
|
|
MOZ_ASSERT(startToDelete.IsSetAndValid());
|
|
MOZ_ASSERT(endToDelete.IsSetAndValid());
|
|
MOZ_ASSERT(startToDelete.EqualsOrIsBefore(endToDelete));
|
|
|
|
if (EndRef().EqualsOrIsBefore(endToDelete)) {
|
|
return ReplaceRangeData();
|
|
}
|
|
|
|
// If deleting range is followed by invisible trailing white-spaces, we need
|
|
// to remove it for making them not visible.
|
|
const EditorDOMRange invisibleTrailingWhiteSpaceRangeAtEnd =
|
|
GetNewInvisibleTrailingWhiteSpaceRangeIfSplittingAt(endToDelete);
|
|
if (invisibleTrailingWhiteSpaceRangeAtEnd.IsPositioned()) {
|
|
if (invisibleTrailingWhiteSpaceRangeAtEnd.Collapsed()) {
|
|
return ReplaceRangeData();
|
|
}
|
|
// XXX Why don't we remove all invisible white-spaces?
|
|
MOZ_ASSERT(invisibleTrailingWhiteSpaceRangeAtEnd.StartRef() == endToDelete);
|
|
return ReplaceRangeData(invisibleTrailingWhiteSpaceRangeAtEnd, u""_ns);
|
|
}
|
|
|
|
// If end of the deleting range is followed by visible white-spaces which
|
|
// is not preformatted, we might need to replace the following ASCII
|
|
// white-spaces with an NBSP.
|
|
const VisibleWhiteSpacesData& nonPreformattedVisibleWhiteSpacesAtEnd =
|
|
VisibleWhiteSpacesDataRef();
|
|
if (!nonPreformattedVisibleWhiteSpacesAtEnd.IsInitialized()) {
|
|
return ReplaceRangeData();
|
|
}
|
|
const PointPosition pointPositionWithNonPreformattedVisibleWhiteSpacesAtEnd =
|
|
nonPreformattedVisibleWhiteSpacesAtEnd.ComparePoint(endToDelete);
|
|
if (pointPositionWithNonPreformattedVisibleWhiteSpacesAtEnd !=
|
|
PointPosition::StartOfFragment &&
|
|
pointPositionWithNonPreformattedVisibleWhiteSpacesAtEnd !=
|
|
PointPosition::MiddleOfFragment) {
|
|
return ReplaceRangeData();
|
|
}
|
|
// If start of deleting range follows white-spaces or end of delete
|
|
// will be start of a line, the following text cannot start with an
|
|
// ASCII white-space for keeping it visible.
|
|
if (!aTextFragmentDataAtStartToDelete
|
|
.FollowingContentMayBecomeFirstVisibleContent(startToDelete)) {
|
|
return ReplaceRangeData();
|
|
}
|
|
auto nextCharOfStartOfEnd = GetInclusiveNextCharPoint<EditorDOMPointInText>(
|
|
endToDelete, ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
if (!nextCharOfStartOfEnd.IsSet() ||
|
|
nextCharOfStartOfEnd.IsEndOfContainer() ||
|
|
!nextCharOfStartOfEnd.IsCharCollapsibleASCIISpace()) {
|
|
return ReplaceRangeData();
|
|
}
|
|
if (nextCharOfStartOfEnd.IsStartOfContainer() ||
|
|
nextCharOfStartOfEnd.IsPreviousCharCollapsibleASCIISpace()) {
|
|
nextCharOfStartOfEnd =
|
|
aTextFragmentDataAtStartToDelete
|
|
.GetFirstASCIIWhiteSpacePointCollapsedTo<EditorDOMPointInText>(
|
|
nextCharOfStartOfEnd, nsIEditor::eNone,
|
|
ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
}
|
|
const auto endOfCollapsibleASCIIWhiteSpaces =
|
|
aTextFragmentDataAtStartToDelete
|
|
.GetEndOfCollapsibleASCIIWhiteSpaces<EditorDOMPointInText>(
|
|
nextCharOfStartOfEnd, nsIEditor::eNone,
|
|
ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
return ReplaceRangeData(nextCharOfStartOfEnd,
|
|
endOfCollapsibleASCIIWhiteSpaces,
|
|
nsDependentSubstring(&HTMLEditUtils::kNBSP, 1));
|
|
}
|
|
|
|
ReplaceRangeData
|
|
WSRunScanner::TextFragmentData::GetReplaceRangeDataAtStartOfDeletionRange(
|
|
const TextFragmentData& aTextFragmentDataAtEndToDelete) const {
|
|
const EditorDOMPoint& startToDelete = mScanStartPoint;
|
|
const EditorDOMPoint& endToDelete =
|
|
aTextFragmentDataAtEndToDelete.ScanStartRef();
|
|
|
|
MOZ_ASSERT(startToDelete.IsSetAndValid());
|
|
MOZ_ASSERT(endToDelete.IsSetAndValid());
|
|
MOZ_ASSERT(startToDelete.EqualsOrIsBefore(endToDelete));
|
|
|
|
if (startToDelete.EqualsOrIsBefore(StartRef())) {
|
|
return ReplaceRangeData();
|
|
}
|
|
|
|
const EditorDOMRange invisibleLeadingWhiteSpaceRangeAtStart =
|
|
GetNewInvisibleLeadingWhiteSpaceRangeIfSplittingAt(startToDelete);
|
|
|
|
// If deleting range follows invisible leading white-spaces, we need to
|
|
// remove them for making them not visible.
|
|
if (invisibleLeadingWhiteSpaceRangeAtStart.IsPositioned()) {
|
|
if (invisibleLeadingWhiteSpaceRangeAtStart.Collapsed()) {
|
|
return ReplaceRangeData();
|
|
}
|
|
|
|
// XXX Why don't we remove all leading white-spaces?
|
|
return ReplaceRangeData(invisibleLeadingWhiteSpaceRangeAtStart, u""_ns);
|
|
}
|
|
|
|
// If start of the deleting range follows visible white-spaces which is not
|
|
// preformatted, we might need to replace previous ASCII white-spaces with
|
|
// an NBSP.
|
|
const VisibleWhiteSpacesData& nonPreformattedVisibleWhiteSpacesAtStart =
|
|
VisibleWhiteSpacesDataRef();
|
|
if (!nonPreformattedVisibleWhiteSpacesAtStart.IsInitialized()) {
|
|
return ReplaceRangeData();
|
|
}
|
|
const PointPosition
|
|
pointPositionWithNonPreformattedVisibleWhiteSpacesAtStart =
|
|
nonPreformattedVisibleWhiteSpacesAtStart.ComparePoint(startToDelete);
|
|
if (pointPositionWithNonPreformattedVisibleWhiteSpacesAtStart !=
|
|
PointPosition::MiddleOfFragment &&
|
|
pointPositionWithNonPreformattedVisibleWhiteSpacesAtStart !=
|
|
PointPosition::EndOfFragment) {
|
|
return ReplaceRangeData();
|
|
}
|
|
// If end of the deleting range is (was) followed by white-spaces or
|
|
// previous character of start of deleting range will be immediately
|
|
// before a block boundary, the text cannot ends with an ASCII white-space
|
|
// for keeping it visible.
|
|
if (!aTextFragmentDataAtEndToDelete.PrecedingContentMayBecomeInvisible(
|
|
endToDelete)) {
|
|
return ReplaceRangeData();
|
|
}
|
|
auto atPreviousCharOfStart = GetPreviousCharPoint<EditorDOMPointInText>(
|
|
startToDelete, ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
if (!atPreviousCharOfStart.IsSet() ||
|
|
atPreviousCharOfStart.IsEndOfContainer() ||
|
|
!atPreviousCharOfStart.IsCharCollapsibleASCIISpace()) {
|
|
return ReplaceRangeData();
|
|
}
|
|
if (atPreviousCharOfStart.IsStartOfContainer() ||
|
|
atPreviousCharOfStart.IsPreviousCharASCIISpace()) {
|
|
atPreviousCharOfStart =
|
|
GetFirstASCIIWhiteSpacePointCollapsedTo<EditorDOMPointInText>(
|
|
atPreviousCharOfStart, nsIEditor::eNone,
|
|
ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
}
|
|
const auto endOfCollapsibleASCIIWhiteSpaces =
|
|
GetEndOfCollapsibleASCIIWhiteSpaces<EditorDOMPointInText>(
|
|
atPreviousCharOfStart, nsIEditor::eNone,
|
|
ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
return ReplaceRangeData(atPreviousCharOfStart,
|
|
endOfCollapsibleASCIIWhiteSpaces,
|
|
nsDependentSubstring(&HTMLEditUtils::kNBSP, 1));
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType, typename PT, typename CT>
|
|
EditorDOMPointType WSRunScanner::TextFragmentData::GetInclusiveNextCharPoint(
|
|
const EditorDOMPointBase<PT, CT>& aPoint,
|
|
BlockInlineCheck aBlockInlineCheck,
|
|
IgnoreNonEditableNodes aIgnoreNonEditableNodes,
|
|
const nsIContent* aFollowingLimiterContent /* = nullptr */) {
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
|
|
if (NS_WARN_IF(!aPoint.IsInContentNode())) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
const EditorRawDOMPoint point = [&]() {
|
|
nsIContent* const child =
|
|
aPoint.CanContainerHaveChildren() ? aPoint.GetChild() : nullptr;
|
|
if (!child) {
|
|
return aPoint.template To<EditorRawDOMPoint>();
|
|
}
|
|
if (!child->HasChildNodes()) {
|
|
return EditorRawDOMPoint(child, 0);
|
|
}
|
|
// FIXME: This may skip aFollowingLimiterContent, so, this utility should
|
|
// take a stopper param.
|
|
// FIXME: I think we should stop looking for a leaf node if there is a child
|
|
// block because end reason content should not be the other side of the
|
|
// following block boundary.
|
|
nsIContent* const leafContent = HTMLEditUtils::GetFirstLeafContent(
|
|
*child, {LeafNodeType::OnlyLeafNode});
|
|
if (NS_WARN_IF(!leafContent)) {
|
|
return EditorRawDOMPoint();
|
|
}
|
|
return EditorRawDOMPoint(leafContent, 0);
|
|
}();
|
|
if (!point.IsSet()) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
// If it points a character in a text node, return it.
|
|
// XXX For the performance, this does not check whether the container
|
|
// is outside of our range.
|
|
if (point.IsInTextNode() &&
|
|
(aIgnoreNonEditableNodes == IgnoreNonEditableNodes::No ||
|
|
HTMLEditUtils::IsSimplyEditableNode(*point.GetContainer())) &&
|
|
!point.IsEndOfContainer()) {
|
|
return EditorDOMPointType(point.ContainerAs<Text>(), point.Offset());
|
|
}
|
|
|
|
if (point.GetContainer() == aFollowingLimiterContent) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
const Element* const
|
|
editableBlockElementOrInlineEditingHostOrNonEditableRootElement =
|
|
HTMLEditUtils::GetInclusiveAncestorElement(
|
|
*aPoint.template ContainerAs<nsIContent>(),
|
|
HTMLEditUtils::IsSimplyEditableNode(
|
|
*aPoint.template ContainerAs<nsIContent>())
|
|
? kScanEditableRootAncestorTypes
|
|
: kScanAnyRootAncestorTypes,
|
|
aBlockInlineCheck);
|
|
if (NS_WARN_IF(
|
|
!editableBlockElementOrInlineEditingHostOrNonEditableRootElement)) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
const auto leafNodeTypes =
|
|
aIgnoreNonEditableNodes == IgnoreNonEditableNodes::Yes
|
|
? LeafNodeTypes(LeafNodeType::LeafNodeOrNonEditableNode)
|
|
: LeafNodeTypes(LeafNodeType::OnlyLeafNode);
|
|
for (nsIContent* nextContent =
|
|
HTMLEditUtils::GetNextLeafContentOrNextBlockElement(
|
|
*point.ContainerAs<nsIContent>(), leafNodeTypes,
|
|
aBlockInlineCheck,
|
|
editableBlockElementOrInlineEditingHostOrNonEditableRootElement);
|
|
nextContent;
|
|
nextContent = HTMLEditUtils::GetNextLeafContentOrNextBlockElement(
|
|
*nextContent, leafNodeTypes, aBlockInlineCheck,
|
|
editableBlockElementOrInlineEditingHostOrNonEditableRootElement)) {
|
|
if (!nextContent->IsText() ||
|
|
(aIgnoreNonEditableNodes == IgnoreNonEditableNodes::Yes &&
|
|
!HTMLEditUtils::IsSimplyEditableNode(*nextContent))) {
|
|
if (nextContent == aFollowingLimiterContent) {
|
|
break; // Reached end of current runs.
|
|
}
|
|
continue;
|
|
}
|
|
return EditorDOMPointType(nextContent->AsText(), 0);
|
|
}
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType, typename PT, typename CT>
|
|
EditorDOMPointType WSRunScanner::TextFragmentData::GetPreviousCharPoint(
|
|
const EditorDOMPointBase<PT, CT>& aPoint,
|
|
BlockInlineCheck aBlockInlineCheck,
|
|
IgnoreNonEditableNodes aIgnoreNonEditableNodes,
|
|
const nsIContent* aPrecedingLimiterContent /* = nullptr */) {
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
|
|
if (NS_WARN_IF(!aPoint.IsInContentNode())) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
const EditorRawDOMPoint point = [&]() {
|
|
nsIContent* const previousChild = aPoint.CanContainerHaveChildren()
|
|
? aPoint.GetPreviousSiblingOfChild()
|
|
: nullptr;
|
|
if (!previousChild) {
|
|
return aPoint.template To<EditorRawDOMPoint>();
|
|
}
|
|
if (!previousChild->HasChildren()) {
|
|
return EditorRawDOMPoint::AtEndOf(*previousChild);
|
|
}
|
|
// FIXME: This may skip aPrecedingLimiterContent, so, this utility should
|
|
// take a stopper param.
|
|
// FIXME: I think we should stop looking for a leaf node if there is a child
|
|
// block because end reason content should not be the other side of the
|
|
// following block boundary.
|
|
nsIContent* const leafContent = HTMLEditUtils::GetLastLeafContent(
|
|
*previousChild, {LeafNodeType::OnlyLeafNode});
|
|
if (NS_WARN_IF(!leafContent)) {
|
|
return EditorRawDOMPoint();
|
|
}
|
|
return EditorRawDOMPoint::AtEndOf(*leafContent);
|
|
}();
|
|
if (!point.IsSet()) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
// If it points a character in a text node and it's not first character
|
|
// in it, return its previous point.
|
|
// XXX For the performance, this does not check whether the container
|
|
// is outside of our range.
|
|
if (point.IsInTextNode() &&
|
|
(aIgnoreNonEditableNodes == IgnoreNonEditableNodes::No ||
|
|
HTMLEditUtils::IsSimplyEditableNode(*point.GetContainer())) &&
|
|
!point.IsStartOfContainer()) {
|
|
return EditorDOMPointType(point.ContainerAs<Text>(), point.Offset() - 1);
|
|
}
|
|
|
|
if (point.GetContainer() == aPrecedingLimiterContent) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
const Element* const
|
|
editableBlockElementOrInlineEditingHostOrNonEditableRootElement =
|
|
HTMLEditUtils::GetInclusiveAncestorElement(
|
|
*aPoint.template ContainerAs<nsIContent>(),
|
|
HTMLEditUtils::IsSimplyEditableNode(
|
|
*aPoint.template ContainerAs<nsIContent>())
|
|
? kScanEditableRootAncestorTypes
|
|
: kScanAnyRootAncestorTypes,
|
|
aBlockInlineCheck);
|
|
if (NS_WARN_IF(
|
|
!editableBlockElementOrInlineEditingHostOrNonEditableRootElement)) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
const auto leafNodeTypes =
|
|
aIgnoreNonEditableNodes == IgnoreNonEditableNodes::Yes
|
|
? LeafNodeTypes(LeafNodeType::LeafNodeOrNonEditableNode)
|
|
: LeafNodeTypes(LeafNodeType::OnlyLeafNode);
|
|
for (
|
|
nsIContent* previousContent =
|
|
HTMLEditUtils::GetPreviousLeafContentOrPreviousBlockElement(
|
|
*point.ContainerAs<nsIContent>(), leafNodeTypes,
|
|
aBlockInlineCheck,
|
|
editableBlockElementOrInlineEditingHostOrNonEditableRootElement);
|
|
previousContent;
|
|
previousContent =
|
|
HTMLEditUtils::GetPreviousLeafContentOrPreviousBlockElement(
|
|
*previousContent, leafNodeTypes, aBlockInlineCheck,
|
|
editableBlockElementOrInlineEditingHostOrNonEditableRootElement)) {
|
|
if (!previousContent->IsText() ||
|
|
(aIgnoreNonEditableNodes == IgnoreNonEditableNodes::Yes &&
|
|
!HTMLEditUtils::IsSimplyEditableNode(*previousContent))) {
|
|
if (previousContent == aPrecedingLimiterContent) {
|
|
break; // Reached start of current runs.
|
|
}
|
|
continue;
|
|
}
|
|
return EditorDOMPointType(previousContent->AsText(),
|
|
previousContent->AsText()->TextLength()
|
|
? previousContent->AsText()->TextLength() - 1
|
|
: 0);
|
|
}
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType>
|
|
EditorDOMPointType
|
|
WSRunScanner::TextFragmentData::GetEndOfCollapsibleASCIIWhiteSpaces(
|
|
const EditorDOMPointInText& aPointAtASCIIWhiteSpace,
|
|
nsIEditor::EDirection aDirectionToDelete,
|
|
BlockInlineCheck aBlockInlineCheck,
|
|
IgnoreNonEditableNodes aIgnoreNonEditableNodes,
|
|
const nsIContent* aFollowingLimiterContent /* = nullptr */) {
|
|
MOZ_ASSERT(aDirectionToDelete == nsIEditor::eNone ||
|
|
aDirectionToDelete == nsIEditor::eNext ||
|
|
aDirectionToDelete == nsIEditor::ePrevious);
|
|
MOZ_ASSERT(aPointAtASCIIWhiteSpace.IsSet());
|
|
MOZ_ASSERT(!aPointAtASCIIWhiteSpace.IsEndOfContainer());
|
|
MOZ_ASSERT_IF(!EditorUtils::IsNewLinePreformatted(
|
|
*aPointAtASCIIWhiteSpace.ContainerAs<Text>()),
|
|
aPointAtASCIIWhiteSpace.IsCharCollapsibleASCIISpace());
|
|
MOZ_ASSERT_IF(EditorUtils::IsNewLinePreformatted(
|
|
*aPointAtASCIIWhiteSpace.ContainerAs<Text>()),
|
|
aPointAtASCIIWhiteSpace.IsCharASCIISpace());
|
|
|
|
// If we're deleting text forward and the next visible character is first
|
|
// preformatted new line but white-spaces can be collapsed, we need to
|
|
// delete its following collapsible white-spaces too.
|
|
bool hasSeenPreformattedNewLine =
|
|
aPointAtASCIIWhiteSpace.IsCharPreformattedNewLine();
|
|
auto NeedToScanFollowingWhiteSpaces =
|
|
[&hasSeenPreformattedNewLine, &aDirectionToDelete](
|
|
const EditorDOMPointInText& aAtNextVisibleCharacter) -> bool {
|
|
MOZ_ASSERT(!aAtNextVisibleCharacter.IsEndOfContainer());
|
|
return !hasSeenPreformattedNewLine &&
|
|
aDirectionToDelete == nsIEditor::eNext &&
|
|
aAtNextVisibleCharacter
|
|
.IsCharPreformattedNewLineCollapsedWithWhiteSpaces();
|
|
};
|
|
auto ScanNextNonCollapsibleChar =
|
|
[&hasSeenPreformattedNewLine, &NeedToScanFollowingWhiteSpaces](
|
|
const EditorDOMPointInText& aPoint) -> EditorDOMPointInText {
|
|
Maybe<uint32_t> nextVisibleCharOffset =
|
|
HTMLEditUtils::GetNextNonCollapsibleCharOffset(aPoint);
|
|
if (!nextVisibleCharOffset.isSome()) {
|
|
return EditorDOMPointInText(); // Keep scanning following text nodes
|
|
}
|
|
EditorDOMPointInText atNextVisibleChar(aPoint.ContainerAs<Text>(),
|
|
nextVisibleCharOffset.value());
|
|
if (!NeedToScanFollowingWhiteSpaces(atNextVisibleChar)) {
|
|
return atNextVisibleChar;
|
|
}
|
|
hasSeenPreformattedNewLine |= atNextVisibleChar.IsCharPreformattedNewLine();
|
|
nextVisibleCharOffset =
|
|
HTMLEditUtils::GetNextNonCollapsibleCharOffset(atNextVisibleChar);
|
|
if (nextVisibleCharOffset.isSome()) {
|
|
MOZ_ASSERT(aPoint.ContainerAs<Text>() ==
|
|
atNextVisibleChar.ContainerAs<Text>());
|
|
return EditorDOMPointInText(atNextVisibleChar.ContainerAs<Text>(),
|
|
nextVisibleCharOffset.value());
|
|
}
|
|
return EditorDOMPointInText(); // Keep scanning following text nodes
|
|
};
|
|
|
|
// If it's not the last character in the text node, let's scan following
|
|
// characters in it.
|
|
if (!aPointAtASCIIWhiteSpace.IsAtLastContent()) {
|
|
const EditorDOMPointInText atNextVisibleChar(
|
|
ScanNextNonCollapsibleChar(aPointAtASCIIWhiteSpace));
|
|
if (atNextVisibleChar.IsSet()) {
|
|
return atNextVisibleChar.To<EditorDOMPointType>();
|
|
}
|
|
}
|
|
|
|
// Otherwise, i.e., the text node ends with ASCII white-space, keep scanning
|
|
// the following text nodes.
|
|
// XXX Perhaps, we should stop scanning if there is non-editable and visible
|
|
// content.
|
|
EditorDOMPointInText afterLastWhiteSpace = EditorDOMPointInText::AtEndOf(
|
|
*aPointAtASCIIWhiteSpace.ContainerAs<Text>());
|
|
for (EditorDOMPointInText atEndOfPreviousTextNode = afterLastWhiteSpace;;) {
|
|
const auto atStartOfNextTextNode =
|
|
TextFragmentData::GetInclusiveNextCharPoint<EditorDOMPointInText>(
|
|
atEndOfPreviousTextNode, aBlockInlineCheck, aIgnoreNonEditableNodes,
|
|
aFollowingLimiterContent);
|
|
if (!atStartOfNextTextNode.IsSet()) {
|
|
// There is no more text nodes. Return end of the previous text node.
|
|
return afterLastWhiteSpace.To<EditorDOMPointType>();
|
|
}
|
|
|
|
// We can ignore empty text nodes (even if it's preformatted).
|
|
if (atStartOfNextTextNode.IsContainerEmpty()) {
|
|
atEndOfPreviousTextNode = atStartOfNextTextNode;
|
|
continue;
|
|
}
|
|
|
|
// If next node starts with non-white-space character or next node is
|
|
// preformatted, return end of previous text node. However, if it
|
|
// starts with a preformatted linefeed but white-spaces are collapsible,
|
|
// we need to scan following collapsible white-spaces when we're deleting
|
|
// text forward.
|
|
if (!atStartOfNextTextNode.IsCharCollapsibleASCIISpace() &&
|
|
!NeedToScanFollowingWhiteSpaces(atStartOfNextTextNode)) {
|
|
return afterLastWhiteSpace.To<EditorDOMPointType>();
|
|
}
|
|
|
|
// Otherwise, scan the text node.
|
|
const EditorDOMPointInText atNextVisibleChar(
|
|
ScanNextNonCollapsibleChar(atStartOfNextTextNode));
|
|
if (atNextVisibleChar.IsSet()) {
|
|
return atNextVisibleChar.To<EditorDOMPointType>();
|
|
}
|
|
|
|
// The next text nodes ends with white-space too. Try next one.
|
|
afterLastWhiteSpace = atEndOfPreviousTextNode =
|
|
EditorDOMPointInText::AtEndOf(
|
|
*atStartOfNextTextNode.ContainerAs<Text>());
|
|
}
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType>
|
|
EditorDOMPointType
|
|
WSRunScanner::TextFragmentData::GetFirstASCIIWhiteSpacePointCollapsedTo(
|
|
const EditorDOMPointInText& aPointAtASCIIWhiteSpace,
|
|
nsIEditor::EDirection aDirectionToDelete,
|
|
BlockInlineCheck aBlockInlineCheck,
|
|
IgnoreNonEditableNodes aIgnoreNonEditableNodes,
|
|
const nsIContent* aPrecedingLimiterContent) {
|
|
MOZ_ASSERT(aDirectionToDelete == nsIEditor::eNone ||
|
|
aDirectionToDelete == nsIEditor::eNext ||
|
|
aDirectionToDelete == nsIEditor::ePrevious);
|
|
MOZ_ASSERT(aPointAtASCIIWhiteSpace.IsSet());
|
|
MOZ_ASSERT(!aPointAtASCIIWhiteSpace.IsEndOfContainer());
|
|
MOZ_ASSERT_IF(!EditorUtils::IsNewLinePreformatted(
|
|
*aPointAtASCIIWhiteSpace.ContainerAs<Text>()),
|
|
aPointAtASCIIWhiteSpace.IsCharCollapsibleASCIISpace());
|
|
MOZ_ASSERT_IF(EditorUtils::IsNewLinePreformatted(
|
|
*aPointAtASCIIWhiteSpace.ContainerAs<Text>()),
|
|
aPointAtASCIIWhiteSpace.IsCharASCIISpace());
|
|
|
|
// If we're deleting text backward and the previous visible character is first
|
|
// preformatted new line but white-spaces can be collapsed, we need to delete
|
|
// its preceding collapsible white-spaces too.
|
|
bool hasSeenPreformattedNewLine =
|
|
aPointAtASCIIWhiteSpace.IsCharPreformattedNewLine();
|
|
auto NeedToScanPrecedingWhiteSpaces =
|
|
[&hasSeenPreformattedNewLine, &aDirectionToDelete](
|
|
const EditorDOMPointInText& aAtPreviousVisibleCharacter) -> bool {
|
|
MOZ_ASSERT(!aAtPreviousVisibleCharacter.IsEndOfContainer());
|
|
return !hasSeenPreformattedNewLine &&
|
|
aDirectionToDelete == nsIEditor::ePrevious &&
|
|
aAtPreviousVisibleCharacter
|
|
.IsCharPreformattedNewLineCollapsedWithWhiteSpaces();
|
|
};
|
|
auto ScanPreviousNonCollapsibleChar =
|
|
[&hasSeenPreformattedNewLine, &NeedToScanPrecedingWhiteSpaces](
|
|
const EditorDOMPointInText& aPoint) -> EditorDOMPointInText {
|
|
Maybe<uint32_t> previousVisibleCharOffset =
|
|
HTMLEditUtils::GetPreviousNonCollapsibleCharOffset(aPoint);
|
|
if (previousVisibleCharOffset.isNothing()) {
|
|
return EditorDOMPointInText(); // Keep scanning preceding text nodes
|
|
}
|
|
EditorDOMPointInText atPreviousVisibleCharacter(
|
|
aPoint.ContainerAs<Text>(), previousVisibleCharOffset.value());
|
|
if (!NeedToScanPrecedingWhiteSpaces(atPreviousVisibleCharacter)) {
|
|
return atPreviousVisibleCharacter.NextPoint();
|
|
}
|
|
hasSeenPreformattedNewLine |=
|
|
atPreviousVisibleCharacter.IsCharPreformattedNewLine();
|
|
previousVisibleCharOffset =
|
|
HTMLEditUtils::GetPreviousNonCollapsibleCharOffset(
|
|
atPreviousVisibleCharacter);
|
|
if (previousVisibleCharOffset.isSome()) {
|
|
MOZ_ASSERT(aPoint.ContainerAs<Text>() ==
|
|
atPreviousVisibleCharacter.ContainerAs<Text>());
|
|
return EditorDOMPointInText(
|
|
atPreviousVisibleCharacter.ContainerAs<Text>(),
|
|
previousVisibleCharOffset.value() + 1);
|
|
}
|
|
return EditorDOMPointInText(); // Keep scanning preceding text nodes
|
|
};
|
|
|
|
// If there is some characters before it, scan it in the text node first.
|
|
if (!aPointAtASCIIWhiteSpace.IsStartOfContainer()) {
|
|
EditorDOMPointInText atFirstASCIIWhiteSpace(
|
|
ScanPreviousNonCollapsibleChar(aPointAtASCIIWhiteSpace));
|
|
if (atFirstASCIIWhiteSpace.IsSet()) {
|
|
return atFirstASCIIWhiteSpace.To<EditorDOMPointType>();
|
|
}
|
|
}
|
|
|
|
// Otherwise, i.e., the text node starts with ASCII white-space, keep scanning
|
|
// the preceding text nodes.
|
|
// XXX Perhaps, we should stop scanning if there is non-editable and visible
|
|
// content.
|
|
EditorDOMPointInText atLastWhiteSpace =
|
|
EditorDOMPointInText(aPointAtASCIIWhiteSpace.ContainerAs<Text>(), 0u);
|
|
for (EditorDOMPointInText atStartOfPreviousTextNode = atLastWhiteSpace;;) {
|
|
const auto atLastCharOfPreviousTextNode =
|
|
TextFragmentData::GetPreviousCharPoint<EditorDOMPointInText>(
|
|
atStartOfPreviousTextNode, aBlockInlineCheck,
|
|
aIgnoreNonEditableNodes, aPrecedingLimiterContent);
|
|
if (!atLastCharOfPreviousTextNode.IsSet()) {
|
|
// There is no more text nodes. Return end of last text node.
|
|
return atLastWhiteSpace.To<EditorDOMPointType>();
|
|
}
|
|
|
|
// We can ignore empty text nodes (even if it's preformatted).
|
|
if (atLastCharOfPreviousTextNode.IsContainerEmpty()) {
|
|
atStartOfPreviousTextNode = atLastCharOfPreviousTextNode;
|
|
continue;
|
|
}
|
|
|
|
// If next node ends with non-white-space character or next node is
|
|
// preformatted, return start of previous text node.
|
|
if (!atLastCharOfPreviousTextNode.IsCharCollapsibleASCIISpace() &&
|
|
!NeedToScanPrecedingWhiteSpaces(atLastCharOfPreviousTextNode)) {
|
|
return atLastWhiteSpace.To<EditorDOMPointType>();
|
|
}
|
|
|
|
// Otherwise, scan the text node.
|
|
const EditorDOMPointInText atFirstASCIIWhiteSpace(
|
|
ScanPreviousNonCollapsibleChar(atLastCharOfPreviousTextNode));
|
|
if (atFirstASCIIWhiteSpace.IsSet()) {
|
|
return atFirstASCIIWhiteSpace.To<EditorDOMPointType>();
|
|
}
|
|
|
|
// The next text nodes starts with white-space too. Try next one.
|
|
atLastWhiteSpace = atStartOfPreviousTextNode = EditorDOMPointInText(
|
|
atLastCharOfPreviousTextNode.ContainerAs<Text>(), 0u);
|
|
}
|
|
}
|
|
|
|
EditorDOMPointInText WSRunScanner::TextFragmentData::
|
|
GetPreviousNBSPPointIfNeedToReplaceWithASCIIWhiteSpace(
|
|
const EditorDOMPoint& aPointToInsert) const {
|
|
MOZ_ASSERT(aPointToInsert.IsSetAndValid());
|
|
MOZ_ASSERT(VisibleWhiteSpacesDataRef().IsInitialized());
|
|
NS_ASSERTION(VisibleWhiteSpacesDataRef().ComparePoint(aPointToInsert) ==
|
|
PointPosition::MiddleOfFragment ||
|
|
VisibleWhiteSpacesDataRef().ComparePoint(aPointToInsert) ==
|
|
PointPosition::EndOfFragment,
|
|
"Previous char of aPoint should be in the visible white-spaces");
|
|
|
|
// Try to change an NBSP to a space, if possible, just to prevent NBSP
|
|
// proliferation. This routine is called when we are about to make this
|
|
// point in the ws abut an inserted break or text, so we don't have to worry
|
|
// about what is after it. What is after it now will end up after the
|
|
// inserted object.
|
|
const auto atPreviousChar = GetPreviousCharPoint<EditorDOMPointInText>(
|
|
aPointToInsert, ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
if (!atPreviousChar.IsSet() || atPreviousChar.IsEndOfContainer() ||
|
|
!atPreviousChar.IsCharNBSP() ||
|
|
EditorUtils::IsWhiteSpacePreformatted(
|
|
*atPreviousChar.ContainerAs<Text>())) {
|
|
return EditorDOMPointInText();
|
|
}
|
|
|
|
const auto atPreviousCharOfPreviousChar =
|
|
GetPreviousCharPoint<EditorDOMPointInText>(
|
|
atPreviousChar,
|
|
ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
if (atPreviousCharOfPreviousChar.IsSet()) {
|
|
// If the previous char is in different text node and it's preformatted,
|
|
// we shouldn't touch it.
|
|
if (atPreviousChar.ContainerAs<Text>() !=
|
|
atPreviousCharOfPreviousChar.ContainerAs<Text>() &&
|
|
EditorUtils::IsWhiteSpacePreformatted(
|
|
*atPreviousCharOfPreviousChar.ContainerAs<Text>())) {
|
|
return EditorDOMPointInText();
|
|
}
|
|
// If the previous char of the NBSP at previous position of aPointToInsert
|
|
// is an ASCII white-space, we don't need to replace it with same character.
|
|
if (!atPreviousCharOfPreviousChar.IsEndOfContainer() &&
|
|
atPreviousCharOfPreviousChar.IsCharASCIISpace()) {
|
|
return EditorDOMPointInText();
|
|
}
|
|
return atPreviousChar;
|
|
}
|
|
|
|
// If previous content of the NBSP is block boundary, we cannot replace the
|
|
// NBSP with an ASCII white-space to keep it rendered.
|
|
const VisibleWhiteSpacesData& visibleWhiteSpaces =
|
|
VisibleWhiteSpacesDataRef();
|
|
if (!visibleWhiteSpaces.StartsFromNonCollapsibleCharacters() &&
|
|
!visibleWhiteSpaces.StartsFromSpecialContent()) {
|
|
return EditorDOMPointInText();
|
|
}
|
|
return atPreviousChar;
|
|
}
|
|
|
|
EditorDOMPointInText WSRunScanner::TextFragmentData::
|
|
GetInclusiveNextNBSPPointIfNeedToReplaceWithASCIIWhiteSpace(
|
|
const EditorDOMPoint& aPointToInsert) const {
|
|
MOZ_ASSERT(aPointToInsert.IsSetAndValid());
|
|
MOZ_ASSERT(VisibleWhiteSpacesDataRef().IsInitialized());
|
|
NS_ASSERTION(VisibleWhiteSpacesDataRef().ComparePoint(aPointToInsert) ==
|
|
PointPosition::StartOfFragment ||
|
|
VisibleWhiteSpacesDataRef().ComparePoint(aPointToInsert) ==
|
|
PointPosition::MiddleOfFragment,
|
|
"Inclusive next char of aPointToInsert should be in the visible "
|
|
"white-spaces");
|
|
|
|
// Try to change an nbsp to a space, if possible, just to prevent nbsp
|
|
// proliferation This routine is called when we are about to make this point
|
|
// in the ws abut an inserted text, so we don't have to worry about what is
|
|
// before it. What is before it now will end up before the inserted text.
|
|
const auto atNextChar = GetInclusiveNextCharPoint<EditorDOMPointInText>(
|
|
aPointToInsert, ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
if (!atNextChar.IsSet() || NS_WARN_IF(atNextChar.IsEndOfContainer()) ||
|
|
!atNextChar.IsCharNBSP() ||
|
|
EditorUtils::IsWhiteSpacePreformatted(*atNextChar.ContainerAs<Text>())) {
|
|
return EditorDOMPointInText();
|
|
}
|
|
|
|
const auto atNextCharOfNextCharOfNBSP =
|
|
GetInclusiveNextCharPoint<EditorDOMPointInText>(
|
|
atNextChar.NextPoint<EditorRawDOMPointInText>(),
|
|
ShouldIgnoreNonEditableSiblingsOrDescendants(mScanMode));
|
|
if (atNextCharOfNextCharOfNBSP.IsSet()) {
|
|
// If the next char is in different text node and it's preformatted,
|
|
// we shouldn't touch it.
|
|
if (atNextChar.ContainerAs<Text>() !=
|
|
atNextCharOfNextCharOfNBSP.ContainerAs<Text>() &&
|
|
EditorUtils::IsWhiteSpacePreformatted(
|
|
*atNextCharOfNextCharOfNBSP.ContainerAs<Text>())) {
|
|
return EditorDOMPointInText();
|
|
}
|
|
// If following character of an NBSP is an ASCII white-space, we don't
|
|
// need to replace it with same character.
|
|
if (!atNextCharOfNextCharOfNBSP.IsEndOfContainer() &&
|
|
atNextCharOfNextCharOfNBSP.IsCharASCIISpace()) {
|
|
return EditorDOMPointInText();
|
|
}
|
|
return atNextChar;
|
|
}
|
|
|
|
// If the NBSP is last character in the hard line, we don't need to
|
|
// replace it because it's required to render multiple white-spaces.
|
|
const VisibleWhiteSpacesData& visibleWhiteSpaces =
|
|
VisibleWhiteSpacesDataRef();
|
|
if (!visibleWhiteSpaces.EndsByNonCollapsibleCharacters() &&
|
|
!visibleWhiteSpaces.EndsBySpecialContent() &&
|
|
!visibleWhiteSpaces.EndsByBRElement()) {
|
|
return EditorDOMPointInText();
|
|
}
|
|
|
|
return atNextChar;
|
|
}
|
|
|
|
} // namespace mozilla
|