| /* |
| * Copyright (C) 2005-2017 Apple Inc. All rights reserved. |
| * Copyright (C) 2009, 2010, 2011 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "ReplaceSelectionCommand.h" |
| |
| #include "AXObjectCache.h" |
| #include "ApplyStyleCommand.h" |
| #include "BeforeTextInsertedEvent.h" |
| #include "BreakBlockquoteCommand.h" |
| #include "CSSStyleDeclaration.h" |
| #include "DOMWrapperWorld.h" |
| #include "DataTransfer.h" |
| #include "Document.h" |
| #include "DocumentFragment.h" |
| #include "Editing.h" |
| #include "ElementIterator.h" |
| #include "EventNames.h" |
| #include "Frame.h" |
| #include "FrameSelection.h" |
| #include "HTMLBRElement.h" |
| #include "HTMLBaseElement.h" |
| #include "HTMLInputElement.h" |
| #include "HTMLLIElement.h" |
| #include "HTMLLinkElement.h" |
| #include "HTMLMetaElement.h" |
| #include "HTMLNames.h" |
| #include "HTMLStyleElement.h" |
| #include "HTMLTitleElement.h" |
| #include "NodeList.h" |
| #include "NodeRenderStyle.h" |
| #include "RenderInline.h" |
| #include "RenderText.h" |
| #include "SimplifyMarkupCommand.h" |
| #include "SmartReplace.h" |
| #include "StyleProperties.h" |
| #include "Text.h" |
| #include "TextIterator.h" |
| #include "VisibleUnits.h" |
| #include "markup.h" |
| #include <wtf/NeverDestroyed.h> |
| #include <wtf/StdLibExtras.h> |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| enum EFragmentType { EmptyFragment, SingleTextNodeFragment, TreeFragment }; |
| |
| static void removeHeadContents(ReplacementFragment&); |
| |
| // --- ReplacementFragment helper class |
| |
| class ReplacementFragment { |
| WTF_MAKE_NONCOPYABLE(ReplacementFragment); |
| public: |
| ReplacementFragment(Document&, DocumentFragment*, const VisibleSelection&); |
| |
| DocumentFragment* fragment() { return m_fragment.get(); } |
| |
| Node* firstChild() const; |
| Node* lastChild() const; |
| |
| bool isEmpty() const; |
| |
| bool hasInterchangeNewlineAtStart() const { return m_hasInterchangeNewlineAtStart; } |
| bool hasInterchangeNewlineAtEnd() const { return m_hasInterchangeNewlineAtEnd; } |
| |
| void removeNode(Node&); |
| void removeNodePreservingChildren(Node&); |
| |
| private: |
| Ref<HTMLElement> insertFragmentForTestRendering(Node* rootEditableNode); |
| void removeUnrenderedNodes(Node*); |
| void restoreAndRemoveTestRenderingNodesToFragment(StyledElement*); |
| void removeInterchangeNodes(Node*); |
| |
| void insertNodeBefore(Node&, Node& refNode); |
| |
| Document& document() { return *m_document; } |
| |
| RefPtr<Document> m_document; |
| RefPtr<DocumentFragment> m_fragment; |
| bool m_hasInterchangeNewlineAtStart; |
| bool m_hasInterchangeNewlineAtEnd; |
| }; |
| |
| static bool isInterchangeNewlineNode(const Node* node) |
| { |
| static NeverDestroyed<String> interchangeNewlineClassString(AppleInterchangeNewline); |
| return is<HTMLBRElement>(node) && downcast<HTMLBRElement>(*node).attributeWithoutSynchronization(classAttr) == interchangeNewlineClassString; |
| } |
| |
| static bool isInterchangeConvertedSpaceSpan(const Node* node) |
| { |
| static NeverDestroyed<String> convertedSpaceSpanClassString(AppleConvertedSpace); |
| return is<HTMLElement>(node) && downcast<HTMLElement>(*node).attributeWithoutSynchronization(classAttr) == convertedSpaceSpanClassString; |
| } |
| |
| static Position positionAvoidingPrecedingNodes(Position position) |
| { |
| ASSERT(position.isNotNull()); |
| |
| // If we're already on a break, it's probably a placeholder and we shouldn't change our position. |
| if (editingIgnoresContent(*position.deprecatedNode())) |
| return position; |
| |
| // We also stop when changing block flow elements because even though the visual position is the |
| // same. E.g., |
| // <div>foo^</div>^ |
| // The two positions above are the same visual position, but we want to stay in the same block. |
| auto* enclosingBlockNode = enclosingBlock(position.containerNode()); |
| for (Position nextPosition = position; nextPosition.containerNode() != enclosingBlockNode; position = nextPosition) { |
| if (lineBreakExistsAtPosition(position)) |
| break; |
| |
| if (position.containerNode()->nonShadowBoundaryParentNode()) |
| nextPosition = positionInParentAfterNode(position.containerNode()); |
| |
| if (nextPosition == position) |
| break; |
| if (enclosingBlock(nextPosition.containerNode()) != enclosingBlockNode) |
| break; |
| if (VisiblePosition(position) != VisiblePosition(nextPosition)) |
| break; |
| } |
| return position; |
| } |
| |
| ReplacementFragment::ReplacementFragment(Document& document, DocumentFragment* fragment, const VisibleSelection& selection) |
| : m_document(&document) |
| , m_fragment(fragment) |
| , m_hasInterchangeNewlineAtStart(false) |
| , m_hasInterchangeNewlineAtEnd(false) |
| { |
| if (!m_fragment) |
| return; |
| if (!m_fragment->firstChild()) |
| return; |
| |
| RefPtr<Element> editableRoot = selection.rootEditableElement(); |
| ASSERT(editableRoot); |
| if (!editableRoot) |
| return; |
| |
| Node* shadowAncestorNode = editableRoot->deprecatedShadowAncestorNode(); |
| |
| if (!editableRoot->attributeEventListener(eventNames().webkitBeforeTextInsertedEvent, mainThreadNormalWorld()) |
| && !(shadowAncestorNode && shadowAncestorNode->renderer() && shadowAncestorNode->renderer()->isTextControl()) |
| && editableRoot->hasRichlyEditableStyle()) { |
| removeInterchangeNodes(m_fragment.get()); |
| return; |
| } |
| |
| RefPtr<StyledElement> holder = insertFragmentForTestRendering(editableRoot.get()); |
| if (!holder) { |
| removeInterchangeNodes(m_fragment.get()); |
| return; |
| } |
| |
| RefPtr<Range> range = VisibleSelection::selectionFromContentsOfNode(holder.get()).toNormalizedRange(); |
| String text = plainText(range.get(), static_cast<TextIteratorBehavior>(TextIteratorEmitsOriginalText | TextIteratorIgnoresStyleVisibility)); |
| |
| removeInterchangeNodes(holder.get()); |
| removeUnrenderedNodes(holder.get()); |
| restoreAndRemoveTestRenderingNodesToFragment(holder.get()); |
| |
| // Give the root a chance to change the text. |
| auto event = BeforeTextInsertedEvent::create(text); |
| editableRoot->dispatchEvent(event); |
| if (text != event->text() || !editableRoot->hasRichlyEditableStyle()) { |
| restoreAndRemoveTestRenderingNodesToFragment(holder.get()); |
| |
| RefPtr<Range> range = selection.toNormalizedRange(); |
| if (!range) |
| return; |
| |
| m_fragment = createFragmentFromText(*range, event->text()); |
| if (!m_fragment->firstChild()) |
| return; |
| |
| holder = insertFragmentForTestRendering(editableRoot.get()); |
| removeInterchangeNodes(holder.get()); |
| removeUnrenderedNodes(holder.get()); |
| restoreAndRemoveTestRenderingNodesToFragment(holder.get()); |
| } |
| } |
| |
| bool ReplacementFragment::isEmpty() const |
| { |
| return (!m_fragment || !m_fragment->firstChild()) && !m_hasInterchangeNewlineAtStart && !m_hasInterchangeNewlineAtEnd; |
| } |
| |
| Node *ReplacementFragment::firstChild() const |
| { |
| return m_fragment ? m_fragment->firstChild() : 0; |
| } |
| |
| Node *ReplacementFragment::lastChild() const |
| { |
| return m_fragment ? m_fragment->lastChild() : 0; |
| } |
| |
| void ReplacementFragment::removeNodePreservingChildren(Node& node) |
| { |
| Ref<Node> protectedNode = node; |
| while (RefPtr<Node> n = node.firstChild()) { |
| removeNode(*n); |
| insertNodeBefore(*n, node); |
| } |
| removeNode(node); |
| } |
| |
| void ReplacementFragment::removeNode(Node& node) |
| { |
| ContainerNode* parent = node.nonShadowBoundaryParentNode(); |
| if (!parent) |
| return; |
| |
| parent->removeChild(node); |
| } |
| |
| void ReplacementFragment::insertNodeBefore(Node& node, Node& refNode) |
| { |
| ContainerNode* parent = refNode.nonShadowBoundaryParentNode(); |
| if (!parent) |
| return; |
| |
| parent->insertBefore(node, &refNode); |
| } |
| |
| Ref<HTMLElement> ReplacementFragment::insertFragmentForTestRendering(Node* rootEditableElement) |
| { |
| auto holder = createDefaultParagraphElement(document()); |
| |
| holder->appendChild(*m_fragment); |
| rootEditableElement->appendChild(holder); |
| document().updateLayoutIgnorePendingStylesheets(); |
| |
| return holder; |
| } |
| |
| void ReplacementFragment::restoreAndRemoveTestRenderingNodesToFragment(StyledElement* holder) |
| { |
| if (!holder) |
| return; |
| |
| while (RefPtr<Node> node = holder->firstChild()) { |
| holder->removeChild(*node); |
| m_fragment->appendChild(*node); |
| } |
| |
| removeNode(*holder); |
| } |
| |
| void ReplacementFragment::removeUnrenderedNodes(Node* holder) |
| { |
| Vector<Ref<Node>> unrendered; |
| |
| for (Node* node = holder->firstChild(); node; node = NodeTraversal::next(*node, holder)) { |
| if (!isNodeRendered(*node) && !isTableStructureNode(node)) |
| unrendered.append(*node); |
| } |
| |
| for (auto& node : unrendered) |
| removeNode(node); |
| } |
| |
| void ReplacementFragment::removeInterchangeNodes(Node* container) |
| { |
| m_hasInterchangeNewlineAtStart = false; |
| m_hasInterchangeNewlineAtEnd = false; |
| |
| // Interchange newlines at the "start" of the incoming fragment must be |
| // either the first node in the fragment or the first leaf in the fragment. |
| Node* node = container->firstChild(); |
| while (node) { |
| if (isInterchangeNewlineNode(node)) { |
| m_hasInterchangeNewlineAtStart = true; |
| removeNode(*node); |
| break; |
| } |
| node = node->firstChild(); |
| } |
| if (!container->hasChildNodes()) |
| return; |
| // Interchange newlines at the "end" of the incoming fragment must be |
| // either the last node in the fragment or the last leaf in the fragment. |
| node = container->lastChild(); |
| while (node) { |
| if (isInterchangeNewlineNode(node)) { |
| m_hasInterchangeNewlineAtEnd = true; |
| removeNode(*node); |
| break; |
| } |
| node = node->lastChild(); |
| } |
| |
| node = container->firstChild(); |
| while (node) { |
| RefPtr<Node> next = NodeTraversal::next(*node); |
| if (isInterchangeConvertedSpaceSpan(node)) { |
| next = NodeTraversal::nextSkippingChildren(*node); |
| removeNodePreservingChildren(*node); |
| } |
| node = next.get(); |
| } |
| } |
| |
| inline void ReplaceSelectionCommand::InsertedNodes::respondToNodeInsertion(Node* node) |
| { |
| if (!node) |
| return; |
| |
| if (!m_firstNodeInserted) |
| m_firstNodeInserted = node; |
| |
| m_lastNodeInserted = node; |
| } |
| |
| inline void ReplaceSelectionCommand::InsertedNodes::willRemoveNodePreservingChildren(Node* node) |
| { |
| if (m_firstNodeInserted == node) |
| m_firstNodeInserted = NodeTraversal::next(*node); |
| if (m_lastNodeInserted == node) |
| m_lastNodeInserted = node->lastChild() ? node->lastChild() : NodeTraversal::nextSkippingChildren(*node); |
| } |
| |
| inline void ReplaceSelectionCommand::InsertedNodes::willRemoveNode(Node* node) |
| { |
| if (m_firstNodeInserted == node && m_lastNodeInserted == node) { |
| m_firstNodeInserted = nullptr; |
| m_lastNodeInserted = nullptr; |
| } else if (m_firstNodeInserted == node) |
| m_firstNodeInserted = NodeTraversal::nextSkippingChildren(*m_firstNodeInserted); |
| else if (m_lastNodeInserted == node) |
| m_lastNodeInserted = NodeTraversal::previousSkippingChildren(*m_lastNodeInserted); |
| } |
| |
| inline void ReplaceSelectionCommand::InsertedNodes::didReplaceNode(Node* node, Node* newNode) |
| { |
| if (m_firstNodeInserted == node) |
| m_firstNodeInserted = newNode; |
| if (m_lastNodeInserted == node) |
| m_lastNodeInserted = newNode; |
| } |
| |
| ReplaceSelectionCommand::ReplaceSelectionCommand(Document& document, RefPtr<DocumentFragment>&& fragment, CommandOptions options, EditAction editAction) |
| : CompositeEditCommand(document, editAction) |
| , m_selectReplacement(options & SelectReplacement) |
| , m_smartReplace(options & SmartReplace) |
| , m_matchStyle(options & MatchStyle) |
| , m_documentFragment(fragment) |
| , m_preventNesting(options & PreventNesting) |
| , m_movingParagraph(options & MovingParagraph) |
| , m_sanitizeFragment(options & SanitizeFragment) |
| , m_shouldMergeEnd(false) |
| , m_ignoreMailBlockquote(options & IgnoreMailBlockquote) |
| { |
| } |
| |
| static bool hasMatchingQuoteLevel(VisiblePosition endOfExistingContent, VisiblePosition endOfInsertedContent) |
| { |
| Position existing = endOfExistingContent.deepEquivalent(); |
| Position inserted = endOfInsertedContent.deepEquivalent(); |
| bool isInsideMailBlockquote = enclosingNodeOfType(inserted, isMailBlockquote, CanCrossEditingBoundary); |
| return isInsideMailBlockquote && (numEnclosingMailBlockquotes(existing) == numEnclosingMailBlockquotes(inserted)); |
| } |
| |
| bool ReplaceSelectionCommand::shouldMergeStart(bool selectionStartWasStartOfParagraph, bool fragmentHasInterchangeNewlineAtStart, bool selectionStartWasInsideMailBlockquote) |
| { |
| if (m_movingParagraph) |
| return false; |
| |
| VisiblePosition startOfInsertedContent(positionAtStartOfInsertedContent()); |
| VisiblePosition prev = startOfInsertedContent.previous(CannotCrossEditingBoundary); |
| if (prev.isNull()) |
| return false; |
| |
| // When we have matching quote levels, its ok to merge more frequently. |
| // For a successful merge, we still need to make sure that the inserted content starts with the beginning of a paragraph. |
| // And we should only merge here if the selection start was inside a mail blockquote. This prevents against removing a |
| // blockquote from newly pasted quoted content that was pasted into an unquoted position. If that unquoted position happens |
| // to be right after another blockquote, we don't want to merge and risk stripping a valid block (and newline) from the pasted content. |
| if (isStartOfParagraph(startOfInsertedContent) && selectionStartWasInsideMailBlockquote && hasMatchingQuoteLevel(prev, positionAtEndOfInsertedContent())) |
| return true; |
| |
| return !selectionStartWasStartOfParagraph |
| && !fragmentHasInterchangeNewlineAtStart |
| && isStartOfParagraph(startOfInsertedContent) |
| && !startOfInsertedContent.deepEquivalent().deprecatedNode()->hasTagName(brTag) |
| && shouldMerge(startOfInsertedContent, prev); |
| } |
| |
| bool ReplaceSelectionCommand::shouldMergeEnd(bool selectionEndWasEndOfParagraph) |
| { |
| VisiblePosition endOfInsertedContent(positionAtEndOfInsertedContent()); |
| VisiblePosition next = endOfInsertedContent.next(CannotCrossEditingBoundary); |
| if (next.isNull()) |
| return false; |
| |
| return !selectionEndWasEndOfParagraph |
| && isEndOfParagraph(endOfInsertedContent) |
| && !endOfInsertedContent.deepEquivalent().deprecatedNode()->hasTagName(brTag) |
| && shouldMerge(endOfInsertedContent, next); |
| } |
| |
| static bool isMailPasteAsQuotationNode(const Node* node) |
| { |
| return node && node->hasTagName(blockquoteTag) && downcast<Element>(node)->attributeWithoutSynchronization(classAttr) == ApplePasteAsQuotation; |
| } |
| |
| static bool isHeaderElement(const Node* a) |
| { |
| if (!a) |
| return false; |
| |
| return a->hasTagName(h1Tag) |
| || a->hasTagName(h2Tag) |
| || a->hasTagName(h3Tag) |
| || a->hasTagName(h4Tag) |
| || a->hasTagName(h5Tag) |
| || a->hasTagName(h6Tag); |
| } |
| |
| static bool haveSameTagName(Node* a, Node* b) |
| { |
| return is<Element>(a) && is<Element>(b) && downcast<Element>(*a).tagName() == downcast<Element>(*b).tagName(); |
| } |
| |
| bool ReplaceSelectionCommand::shouldMerge(const VisiblePosition& source, const VisiblePosition& destination) |
| { |
| if (source.isNull() || destination.isNull()) |
| return false; |
| |
| auto* sourceNode = source.deepEquivalent().deprecatedNode(); |
| auto* destinationNode = destination.deepEquivalent().deprecatedNode(); |
| auto* sourceBlock = enclosingBlock(sourceNode); |
| auto* destinationBlock = enclosingBlock(destinationNode); |
| return !enclosingNodeOfType(source.deepEquivalent(), &isMailPasteAsQuotationNode) |
| && sourceBlock |
| && (!sourceBlock->hasTagName(blockquoteTag) || isMailBlockquote(sourceBlock)) |
| && enclosingListChild(sourceBlock) == enclosingListChild(destinationNode) |
| && enclosingTableCell(source.deepEquivalent()) == enclosingTableCell(destination.deepEquivalent()) |
| && (!isHeaderElement(sourceBlock) || haveSameTagName(sourceBlock, destinationBlock)) |
| // Don't merge to or from a position before or after a block because it would |
| // be a no-op and cause infinite recursion. |
| && !isBlock(sourceNode) && !isBlock(destinationNode); |
| } |
| |
| // Style rules that match just inserted elements could change their appearance, like |
| // a div inserted into a document with div { display:inline; }. |
| void ReplaceSelectionCommand::removeRedundantStylesAndKeepStyleSpanInline(InsertedNodes& insertedNodes) |
| { |
| RefPtr<Node> pastEndNode = insertedNodes.pastLastLeaf(); |
| RefPtr<Node> next; |
| for (RefPtr<Node> node = insertedNodes.firstNodeInserted(); node && node != pastEndNode; node = next) { |
| // FIXME: <rdar://problem/5371536> Style rules that match pasted content can change it's appearance |
| |
| next = NodeTraversal::next(*node); |
| if (!is<StyledElement>(*node)) |
| continue; |
| |
| StyledElement* element = downcast<StyledElement>(node.get()); |
| |
| const StyleProperties* inlineStyle = element->inlineStyle(); |
| RefPtr<EditingStyle> newInlineStyle = EditingStyle::create(inlineStyle); |
| if (inlineStyle) { |
| if (is<HTMLElement>(*element)) { |
| Vector<QualifiedName> attributes; |
| HTMLElement& htmlElement = downcast<HTMLElement>(*element); |
| |
| if (newInlineStyle->conflictsWithImplicitStyleOfElement(&htmlElement)) { |
| // e.g. <b style="font-weight: normal;"> is converted to <span style="font-weight: normal;"> |
| node = replaceElementWithSpanPreservingChildrenAndAttributes(htmlElement); |
| element = downcast<StyledElement>(node.get()); |
| insertedNodes.didReplaceNode(&htmlElement, node.get()); |
| } else if (newInlineStyle->extractConflictingImplicitStyleOfAttributes(&htmlElement, EditingStyle::PreserveWritingDirection, 0, attributes, |
| EditingStyle::DoNotExtractMatchingStyle)) { |
| // e.g. <font size="3" style="font-size: 20px;"> is converted to <font style="font-size: 20px;"> |
| for (auto& attribute : attributes) |
| removeNodeAttribute(*element, attribute); |
| } |
| } |
| |
| ContainerNode* context = element->parentNode(); |
| |
| // If Mail wraps the fragment with a Paste as Quotation blockquote, or if you're pasting into a quoted region, |
| // styles from blockquoteNode are allowed to override those from the source document, see <rdar://problem/4930986> and <rdar://problem/5089327>. |
| Node* blockquoteNode = isMailPasteAsQuotationNode(context) ? context : enclosingNodeOfType(firstPositionInNode(context), isMailBlockquote, CanCrossEditingBoundary); |
| if (blockquoteNode) |
| newInlineStyle->removeStyleFromRulesAndContext(*element, document().documentElement()); |
| |
| newInlineStyle->removeStyleFromRulesAndContext(*element, context); |
| } |
| |
| if (!inlineStyle || newInlineStyle->isEmpty()) { |
| if (isStyleSpanOrSpanWithOnlyStyleAttribute(*element) || isEmptyFontTag(element, AllowNonEmptyStyleAttribute)) { |
| insertedNodes.willRemoveNodePreservingChildren(element); |
| removeNodePreservingChildren(*element); |
| continue; |
| } |
| removeNodeAttribute(*element, styleAttr); |
| } else if (newInlineStyle->style()->propertyCount() != inlineStyle->propertyCount()) |
| setNodeAttribute(*element, styleAttr, newInlineStyle->style()->asText()); |
| |
| // FIXME: Tolerate differences in id, class, and style attributes. |
| if (element->parentNode() && isNonTableCellHTMLBlockElement(element) && areIdenticalElements(*element, *element->parentNode()) |
| && VisiblePosition(firstPositionInNode(element->parentNode())) == VisiblePosition(firstPositionInNode(element)) |
| && VisiblePosition(lastPositionInNode(element->parentNode())) == VisiblePosition(lastPositionInNode(element))) { |
| insertedNodes.willRemoveNodePreservingChildren(element); |
| removeNodePreservingChildren(*element); |
| continue; |
| } |
| |
| if (element->parentNode() && element->parentNode()->hasRichlyEditableStyle()) |
| removeNodeAttribute(*element, contenteditableAttr); |
| |
| // WebKit used to not add display: inline and float: none on copy. |
| // Keep this code around for backward compatibility |
| if (isLegacyAppleStyleSpan(element)) { |
| if (!element->firstChild()) { |
| insertedNodes.willRemoveNodePreservingChildren(element); |
| removeNodePreservingChildren(*element); |
| continue; |
| } |
| // There are other styles that style rules can give to style spans, |
| // but these are the two important ones because they'll prevent |
| // inserted content from appearing in the right paragraph. |
| // FIXME: Hyatt is concerned that selectively using display:inline will give inconsistent |
| // results. We already know one issue because td elements ignore their display property |
| // in quirks mode (which Mail.app is always in). We should look for an alternative. |
| |
| // Mutate using the CSSOM wrapper so we get the same event behavior as a script. |
| if (isBlock(element)) |
| element->cssomStyle().setPropertyInternal(CSSPropertyDisplay, "inline", false); |
| if (element->renderer() && element->renderer()->style().isFloating()) |
| element->cssomStyle().setPropertyInternal(CSSPropertyFloat, "none", false); |
| } |
| } |
| } |
| |
| static bool isProhibitedParagraphChild(const AtomicString& name) |
| { |
| // https://dvcs.w3.org/hg/editing/raw-file/57abe6d3cb60/editing.html#prohibited-paragraph-child |
| static const auto localNames = makeNeverDestroyed([] { |
| static const HTMLQualifiedName* const tags[] = { |
| &addressTag.get(), |
| &articleTag.get(), |
| &asideTag.get(), |
| &blockquoteTag.get(), |
| &captionTag.get(), |
| ¢erTag.get(), |
| &colTag.get(), |
| &colgroupTag.get(), |
| &ddTag.get(), |
| &detailsTag.get(), |
| &dirTag.get(), |
| &divTag.get(), |
| &dlTag.get(), |
| &dtTag.get(), |
| &fieldsetTag.get(), |
| &figcaptionTag.get(), |
| &figureTag.get(), |
| &footerTag.get(), |
| &formTag.get(), |
| &h1Tag.get(), |
| &h2Tag.get(), |
| &h3Tag.get(), |
| &h4Tag.get(), |
| &h5Tag.get(), |
| &h6Tag.get(), |
| &headerTag.get(), |
| &hgroupTag.get(), |
| &hrTag.get(), |
| &liTag.get(), |
| &listingTag.get(), |
| &mainTag.get(), // Missing in the specification. |
| &menuTag.get(), |
| &navTag.get(), |
| &olTag.get(), |
| &pTag.get(), |
| &plaintextTag.get(), |
| &preTag.get(), |
| §ionTag.get(), |
| &summaryTag.get(), |
| &tableTag.get(), |
| &tbodyTag.get(), |
| &tdTag.get(), |
| &tfootTag.get(), |
| &thTag.get(), |
| &theadTag.get(), |
| &trTag.get(), |
| &ulTag.get(), |
| &xmpTag.get(), |
| }; |
| HashSet<AtomicString> set; |
| for (auto& tag : tags) |
| set.add(tag->localName()); |
| return set; |
| }()); |
| return localNames.get().contains(name); |
| } |
| |
| void ReplaceSelectionCommand::makeInsertedContentRoundTrippableWithHTMLTreeBuilder(InsertedNodes& insertedNodes) |
| { |
| RefPtr<Node> pastEndNode = insertedNodes.pastLastLeaf(); |
| RefPtr<Node> next; |
| for (RefPtr<Node> node = insertedNodes.firstNodeInserted(); node && node != pastEndNode; node = next) { |
| next = NodeTraversal::next(*node); |
| |
| if (!is<HTMLElement>(*node)) |
| continue; |
| |
| if (isProhibitedParagraphChild(downcast<HTMLElement>(*node).localName())) { |
| if (auto* paragraphElement = enclosingElementWithTag(positionInParentBeforeNode(node.get()), pTag)) { |
| auto* parent = paragraphElement->parentNode(); |
| if (parent && parent->hasEditableStyle()) |
| moveNodeOutOfAncestor(*node, *paragraphElement, insertedNodes); |
| } |
| } |
| |
| if (isHeaderElement(node.get())) { |
| if (auto* headerElement = highestEnclosingNodeOfType(positionInParentBeforeNode(node.get()), isHeaderElement)) { |
| if (headerElement->parentNode() && headerElement->parentNode()->isContentRichlyEditable()) |
| moveNodeOutOfAncestor(*node, *headerElement, insertedNodes); |
| else { |
| HTMLElement* newSpanElement = replaceElementWithSpanPreservingChildrenAndAttributes(downcast<HTMLElement>(*node)); |
| insertedNodes.didReplaceNode(node.get(), newSpanElement); |
| } |
| } |
| } |
| } |
| } |
| |
| void ReplaceSelectionCommand::moveNodeOutOfAncestor(Node& node, Node& ancestor, InsertedNodes& insertedNodes) |
| { |
| Ref<Node> protectedNode = node; |
| Ref<Node> protectedAncestor = ancestor; |
| |
| VisiblePosition positionAtEndOfNode = lastPositionInOrAfterNode(&node); |
| VisiblePosition lastPositionInParagraph = lastPositionInNode(&ancestor); |
| if (positionAtEndOfNode == lastPositionInParagraph) { |
| removeNode(node); |
| if (ancestor.nextSibling()) |
| insertNodeBefore(WTFMove(protectedNode), *ancestor.nextSibling()); |
| else |
| appendNode(WTFMove(protectedNode), *ancestor.parentNode()); |
| } else { |
| RefPtr<Node> nodeToSplitTo = splitTreeToNode(node, ancestor, true); |
| removeNode(node); |
| insertNodeBefore(WTFMove(protectedNode), *nodeToSplitTo); |
| } |
| if (!ancestor.firstChild()) { |
| insertedNodes.willRemoveNode(&ancestor); |
| removeNode(ancestor); |
| } |
| } |
| |
| static inline bool hasRenderedText(const Text& text) |
| { |
| return text.renderer() && text.renderer()->hasRenderedText(); |
| } |
| |
| void ReplaceSelectionCommand::removeUnrenderedTextNodesAtEnds(InsertedNodes& insertedNodes) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| |
| Node* lastLeafInserted = insertedNodes.lastLeafInserted(); |
| if (is<Text>(lastLeafInserted) && !hasRenderedText(downcast<Text>(*lastLeafInserted)) |
| && !enclosingElementWithTag(firstPositionInOrBeforeNode(lastLeafInserted), selectTag) |
| && !enclosingElementWithTag(firstPositionInOrBeforeNode(lastLeafInserted), scriptTag)) { |
| insertedNodes.willRemoveNode(lastLeafInserted); |
| removeNode(*lastLeafInserted); |
| } |
| |
| // We don't have to make sure that firstNodeInserted isn't inside a select or script element |
| // because it is a top level node in the fragment and the user can't insert into those elements. |
| Node* firstNodeInserted = insertedNodes.firstNodeInserted(); |
| if (is<Text>(firstNodeInserted) && !hasRenderedText(downcast<Text>(*firstNodeInserted))) { |
| insertedNodes.willRemoveNode(firstNodeInserted); |
| removeNode(*firstNodeInserted); |
| } |
| } |
| |
| VisiblePosition ReplaceSelectionCommand::positionAtEndOfInsertedContent() const |
| { |
| // FIXME: Why is this hack here? What's special about <select> tags? |
| auto* enclosingSelect = enclosingElementWithTag(m_endOfInsertedContent, selectTag); |
| return enclosingSelect ? lastPositionInOrAfterNode(enclosingSelect) : m_endOfInsertedContent; |
| } |
| |
| VisiblePosition ReplaceSelectionCommand::positionAtStartOfInsertedContent() const |
| { |
| return m_startOfInsertedContent; |
| } |
| |
| static void removeHeadContents(ReplacementFragment& fragment) |
| { |
| if (fragment.isEmpty()) |
| return; |
| |
| Vector<Element*> toRemove; |
| |
| auto it = descendantsOfType<Element>(*fragment.fragment()).begin(); |
| auto end = descendantsOfType<Element>(*fragment.fragment()).end(); |
| while (it != end) { |
| if (is<HTMLBaseElement>(*it) || is<HTMLLinkElement>(*it) || is<HTMLMetaElement>(*it) || is<HTMLTitleElement>(*it) |
| || (is<HTMLStyleElement>(*it) && it->getAttribute(classAttr) != WebKitMSOListQuirksStyle)) { |
| toRemove.append(&*it); |
| it.traverseNextSkippingChildren(); |
| continue; |
| } |
| ++it; |
| } |
| |
| for (auto& element : toRemove) |
| fragment.removeNode(*element); |
| } |
| |
| // Remove style spans before insertion if they are unnecessary. It's faster because we'll |
| // avoid doing a layout. |
| static bool handleStyleSpansBeforeInsertion(ReplacementFragment& fragment, const Position& insertionPos) |
| { |
| Node* topNode = fragment.firstChild(); |
| |
| // Handling the case where we are doing Paste as Quotation or pasting into quoted content is more complicated (see handleStyleSpans) |
| // and doesn't receive the optimization. |
| if (isMailPasteAsQuotationNode(topNode) || enclosingNodeOfType(firstPositionInOrBeforeNode(topNode), isMailBlockquote, CanCrossEditingBoundary)) |
| return false; |
| |
| // Either there are no style spans in the fragment or a WebKit client has added content to the fragment |
| // before inserting it. Look for and handle style spans after insertion. |
| if (!isLegacyAppleStyleSpan(topNode)) |
| return false; |
| |
| Node* wrappingStyleSpan = topNode; |
| RefPtr<EditingStyle> styleAtInsertionPos = EditingStyle::create(insertionPos.parentAnchoredEquivalent()); |
| String styleText = styleAtInsertionPos->style()->asText(); |
| |
| // FIXME: This string comparison is a naive way of comparing two styles. |
| // We should be taking the diff and check that the diff is empty. |
| if (styleText != downcast<Element>(*wrappingStyleSpan).getAttribute(styleAttr)) |
| return false; |
| |
| fragment.removeNodePreservingChildren(*wrappingStyleSpan); |
| return true; |
| } |
| |
| // At copy time, WebKit wraps copied content in a span that contains the source document's |
| // default styles. If the copied Range inherits any other styles from its ancestors, we put |
| // those styles on a second span. |
| // This function removes redundant styles from those spans, and removes the spans if all their |
| // styles are redundant. |
| // We should remove the Apple-style-span class when we're done, see <rdar://problem/5685600>. |
| // We should remove styles from spans that are overridden by all of their children, either here |
| // or at copy time. |
| void ReplaceSelectionCommand::handleStyleSpans(InsertedNodes& insertedNodes) |
| { |
| HTMLElement* wrappingStyleSpan = nullptr; |
| // The style span that contains the source document's default style should be at |
| // the top of the fragment, but Mail sometimes adds a wrapper (for Paste As Quotation), |
| // so search for the top level style span instead of assuming it's at the top. |
| for (Node* node = insertedNodes.firstNodeInserted(); node; node = NodeTraversal::next(*node)) { |
| if (isLegacyAppleStyleSpan(node)) { |
| wrappingStyleSpan = downcast<HTMLElement>(node); |
| break; |
| } |
| } |
| |
| // There might not be any style spans if we're pasting from another application or if |
| // we are here because of a document.execCommand("InsertHTML", ...) call. |
| if (!wrappingStyleSpan) |
| return; |
| |
| RefPtr<EditingStyle> style = EditingStyle::create(wrappingStyleSpan->inlineStyle()); |
| ContainerNode* context = wrappingStyleSpan->parentNode(); |
| |
| // If Mail wraps the fragment with a Paste as Quotation blockquote, or if you're pasting into a quoted region, |
| // styles from blockquoteNode are allowed to override those from the source document, see <rdar://problem/4930986> and <rdar://problem/5089327>. |
| Node* blockquoteNode = isMailPasteAsQuotationNode(context) ? context : enclosingNodeOfType(firstPositionInNode(context), isMailBlockquote, CanCrossEditingBoundary); |
| if (blockquoteNode) |
| context = document().documentElement(); |
| |
| // This operation requires that only editing styles to be removed from sourceDocumentStyle. |
| style->prepareToApplyAt(firstPositionInNode(context)); |
| |
| // Remove block properties in the span's style. This prevents properties that probably have no effect |
| // currently from affecting blocks later if the style is cloned for a new block element during a future |
| // editing operation. |
| // FIXME: They *can* have an effect currently if blocks beneath the style span aren't individually marked |
| // with block styles by the editing engine used to style them. WebKit doesn't do this, but others might. |
| style->removeBlockProperties(); |
| |
| if (style->isEmpty() || !wrappingStyleSpan->firstChild()) { |
| insertedNodes.willRemoveNodePreservingChildren(wrappingStyleSpan); |
| removeNodePreservingChildren(*wrappingStyleSpan); |
| } else |
| setNodeAttribute(*wrappingStyleSpan, styleAttr, style->style()->asText()); |
| } |
| |
| void ReplaceSelectionCommand::mergeEndIfNeeded() |
| { |
| if (!m_shouldMergeEnd) |
| return; |
| |
| VisiblePosition startOfInsertedContent(positionAtStartOfInsertedContent()); |
| VisiblePosition endOfInsertedContent(positionAtEndOfInsertedContent()); |
| |
| // Bail to avoid infinite recursion. |
| if (m_movingParagraph) { |
| ASSERT_NOT_REACHED(); |
| return; |
| } |
| |
| // Merging two paragraphs will destroy the moved one's block styles. Always move the end of inserted forward |
| // to preserve the block style of the paragraph already in the document, unless the paragraph to move would |
| // include the what was the start of the selection that was pasted into, so that we preserve that paragraph's |
| // block styles. |
| bool mergeForward = !(inSameParagraph(startOfInsertedContent, endOfInsertedContent) && !isStartOfParagraph(startOfInsertedContent)); |
| |
| VisiblePosition destination = mergeForward ? endOfInsertedContent.next() : endOfInsertedContent; |
| VisiblePosition startOfParagraphToMove = mergeForward ? startOfParagraph(endOfInsertedContent) : endOfInsertedContent.next(); |
| |
| // Merging forward could result in deleting the destination anchor node. |
| // To avoid this, we add a placeholder node before the start of the paragraph. |
| if (endOfParagraph(startOfParagraphToMove) == destination) { |
| auto placeholder = HTMLBRElement::create(document()); |
| auto* placeholderPtr = placeholder.ptr(); |
| insertNodeBefore(WTFMove(placeholder), *startOfParagraphToMove.deepEquivalent().deprecatedNode()); |
| destination = VisiblePosition(positionBeforeNode(placeholderPtr)); |
| } |
| |
| moveParagraph(startOfParagraphToMove, endOfParagraph(startOfParagraphToMove), destination); |
| |
| // Merging forward will remove m_endOfInsertedContent from the document. |
| if (mergeForward) { |
| if (m_startOfInsertedContent.isOrphan()) |
| m_startOfInsertedContent = endingSelection().visibleStart().deepEquivalent(); |
| m_endOfInsertedContent = endingSelection().visibleEnd().deepEquivalent(); |
| // If we merged text nodes, m_endOfInsertedContent could be null. If this is the case, we use m_startOfInsertedContent. |
| if (m_endOfInsertedContent.isNull()) |
| m_endOfInsertedContent = m_startOfInsertedContent; |
| } |
| } |
| |
| static Node* enclosingInline(Node* node) |
| { |
| while (ContainerNode* parent = node->parentNode()) { |
| if (isBlockFlowElement(*parent) || parent->hasTagName(bodyTag)) |
| return node; |
| // Stop if any previous sibling is a block. |
| for (Node* sibling = node->previousSibling(); sibling; sibling = sibling->previousSibling()) { |
| if (isBlockFlowElement(*sibling)) |
| return node; |
| } |
| node = parent; |
| } |
| return node; |
| } |
| |
| static bool isInlineNodeWithStyle(const Node* node) |
| { |
| // We don't want to skip over any block elements. |
| if (isBlock(node)) |
| return false; |
| |
| if (!node->isHTMLElement()) |
| return false; |
| |
| // We can skip over elements whose class attribute is |
| // one of our internal classes. |
| const HTMLElement* element = static_cast<const HTMLElement*>(node); |
| const AtomicString& classAttributeValue = element->attributeWithoutSynchronization(classAttr); |
| if (classAttributeValue == AppleTabSpanClass |
| || classAttributeValue == AppleConvertedSpace |
| || classAttributeValue == ApplePasteAsQuotation) |
| return true; |
| |
| return EditingStyle::elementIsStyledSpanOrHTMLEquivalent(element); |
| } |
| |
| inline Node* nodeToSplitToAvoidPastingIntoInlineNodesWithStyle(const Position& insertionPos) |
| { |
| Node* containgBlock = enclosingBlock(insertionPos.containerNode()); |
| return highestEnclosingNodeOfType(insertionPos, isInlineNodeWithStyle, CannotCrossEditingBoundary, containgBlock); |
| } |
| |
| bool ReplaceSelectionCommand::willApplyCommand() |
| { |
| ensureReplacementFragment(); |
| m_documentFragmentPlainText = m_documentFragment->textContent(); |
| m_documentFragmentHTMLMarkup = createMarkup(*m_documentFragment); |
| return CompositeEditCommand::willApplyCommand(); |
| } |
| |
| void ReplaceSelectionCommand::doApply() |
| { |
| VisibleSelection selection = endingSelection(); |
| ASSERT(selection.isCaretOrRange()); |
| ASSERT(selection.start().deprecatedNode()); |
| if (selection.isNoneOrOrphaned() || !selection.start().deprecatedNode() || !selection.isContentEditable()) |
| return; |
| |
| // In plain text only regions, we create style-less fragments, so the inserted content will automatically |
| // match the style of the surrounding area and so we can avoid unnecessary work below for m_matchStyle. |
| if (!selection.isContentRichlyEditable()) |
| m_matchStyle = false; |
| |
| ReplacementFragment& fragment = *ensureReplacementFragment(); |
| if (performTrivialReplace(fragment)) |
| return; |
| |
| // We can skip matching the style if the selection is plain text. |
| if ((selection.start().deprecatedNode()->renderer() && selection.start().deprecatedNode()->renderer()->style().userModify() == READ_WRITE_PLAINTEXT_ONLY) |
| && (selection.end().deprecatedNode()->renderer() && selection.end().deprecatedNode()->renderer()->style().userModify() == READ_WRITE_PLAINTEXT_ONLY)) |
| m_matchStyle = false; |
| |
| if (m_matchStyle) { |
| m_insertionStyle = EditingStyle::create(selection.start()); |
| m_insertionStyle->mergeTypingStyle(document()); |
| } |
| |
| VisiblePosition visibleStart = selection.visibleStart(); |
| VisiblePosition visibleEnd = selection.visibleEnd(); |
| |
| bool selectionEndWasEndOfParagraph = isEndOfParagraph(visibleEnd); |
| bool selectionStartWasStartOfParagraph = isStartOfParagraph(visibleStart); |
| |
| Node* startBlock = enclosingBlock(visibleStart.deepEquivalent().deprecatedNode()); |
| |
| Position insertionPos = selection.start(); |
| bool shouldHandleMailBlockquote = enclosingNodeOfType(insertionPos, isMailBlockquote, CanCrossEditingBoundary) && !m_ignoreMailBlockquote; |
| bool selectionIsPlainText = !selection.isContentRichlyEditable(); |
| Element* currentRoot = selection.rootEditableElement(); |
| |
| if ((selectionStartWasStartOfParagraph && selectionEndWasEndOfParagraph && !shouldHandleMailBlockquote) |
| || startBlock == currentRoot || isListItem(startBlock) || selectionIsPlainText) |
| m_preventNesting = false; |
| |
| if (selection.isRange()) { |
| // When the end of the selection being pasted into is at the end of a paragraph, and that selection |
| // spans multiple blocks, not merging may leave an empty line. |
| // When the start of the selection being pasted into is at the start of a block, not merging |
| // will leave hanging block(s). |
| // Merge blocks if the start of the selection was in a Mail blockquote, since we handle |
| // that case specially to prevent nesting. |
| bool mergeBlocksAfterDelete = shouldHandleMailBlockquote || isEndOfParagraph(visibleEnd) || isStartOfBlock(visibleStart); |
| // FIXME: We should only expand to include fully selected special elements if we are copying a |
| // selection and pasting it on top of itself. |
| // FIXME: capturing the content of this delete would allow a replace accessibility notification instead of a simple insert |
| deleteSelection(false, mergeBlocksAfterDelete, true, false, true); |
| visibleStart = endingSelection().visibleStart(); |
| if (fragment.hasInterchangeNewlineAtStart()) { |
| if (isEndOfParagraph(visibleStart) && !isStartOfParagraph(visibleStart)) { |
| if (!isEndOfEditableOrNonEditableContent(visibleStart)) |
| setEndingSelection(visibleStart.next()); |
| } else |
| insertParagraphSeparator(); |
| } |
| insertionPos = endingSelection().start(); |
| } else { |
| ASSERT(selection.isCaret()); |
| if (fragment.hasInterchangeNewlineAtStart()) { |
| VisiblePosition next = visibleStart.next(CannotCrossEditingBoundary); |
| if (isEndOfParagraph(visibleStart) && !isStartOfParagraph(visibleStart) && next.isNotNull()) |
| setEndingSelection(next); |
| else { |
| insertParagraphSeparator(); |
| visibleStart = endingSelection().visibleStart(); |
| } |
| } |
| // We split the current paragraph in two to avoid nesting the blocks from the fragment inside the current block. |
| // For example paste <div>foo</div><div>bar</div><div>baz</div> into <div>x^x</div>, where ^ is the caret. |
| // As long as the div styles are the same, visually you'd expect: <div>xbar</div><div>bar</div><div>bazx</div>, |
| // not <div>xbar<div>bar</div><div>bazx</div></div>. |
| // Don't do this if the selection started in a Mail blockquote. |
| if (m_preventNesting && !shouldHandleMailBlockquote && !isEndOfParagraph(visibleStart) && !isStartOfParagraph(visibleStart)) { |
| insertParagraphSeparator(); |
| setEndingSelection(endingSelection().visibleStart().previous()); |
| } |
| insertionPos = endingSelection().start(); |
| } |
| |
| // We don't want any of the pasted content to end up nested in a Mail blockquote, so first break |
| // out of any surrounding Mail blockquotes. Unless we're inserting in a table, in which case |
| // breaking the blockquote will prevent the content from actually being inserted in the table. |
| if (shouldHandleMailBlockquote && m_preventNesting && !(enclosingNodeOfType(insertionPos, &isTableStructureNode))) { |
| applyCommandToComposite(BreakBlockquoteCommand::create(document())); |
| // This will leave a br between the split. |
| Node* br = endingSelection().start().deprecatedNode(); |
| ASSERT(br->hasTagName(brTag)); |
| // Insert content between the two blockquotes, but remove the br (since it was just a placeholder). |
| insertionPos = positionInParentBeforeNode(br); |
| removeNode(*br); |
| } |
| |
| // Inserting content could cause whitespace to collapse, e.g. inserting <div>foo</div> into hello^ world. |
| prepareWhitespaceAtPositionForSplit(insertionPos); |
| |
| // If the downstream node has been removed there's no point in continuing. |
| if (!insertionPos.downstream().deprecatedNode()) |
| return; |
| |
| // NOTE: This would be an incorrect usage of downstream() if downstream() were changed to mean the last position after |
| // p that maps to the same visible position as p (since in the case where a br is at the end of a block and collapsed |
| // away, there are positions after the br which map to the same visible position as [br, 0]). |
| RefPtr<Node> endBR = insertionPos.downstream().deprecatedNode()->hasTagName(brTag) ? insertionPos.downstream().deprecatedNode() : nullptr; |
| VisiblePosition originalVisPosBeforeEndBR; |
| if (endBR) |
| originalVisPosBeforeEndBR = VisiblePosition(positionBeforeNode(endBR.get()), DOWNSTREAM).previous(); |
| |
| RefPtr<Node> insertionBlock = enclosingBlock(insertionPos.deprecatedNode()); |
| |
| // Adjust insertionPos to prevent nesting. |
| // If the start was in a Mail blockquote, we will have already handled adjusting insertionPos above. |
| if (m_preventNesting && insertionBlock && !isTableCell(insertionBlock.get()) && !shouldHandleMailBlockquote) { |
| ASSERT(insertionBlock != currentRoot); |
| VisiblePosition visibleInsertionPos(insertionPos); |
| if (isEndOfBlock(visibleInsertionPos) && !(isStartOfBlock(visibleInsertionPos) && fragment.hasInterchangeNewlineAtEnd())) |
| insertionPos = positionInParentAfterNode(insertionBlock.get()); |
| else if (isStartOfBlock(visibleInsertionPos)) |
| insertionPos = positionInParentBeforeNode(insertionBlock.get()); |
| } |
| |
| // Paste at start or end of link goes outside of link. |
| insertionPos = positionAvoidingSpecialElementBoundary(insertionPos); |
| |
| // FIXME: Can this wait until after the operation has been performed? There doesn't seem to be |
| // any work performed after this that queries or uses the typing style. |
| frame().selection().clearTypingStyle(); |
| |
| // We don't want the destination to end up inside nodes that weren't selected. To avoid that, we move the |
| // position forward without changing the visible position so we're still at the same visible location, but |
| // outside of preceding tags. |
| insertionPos = positionAvoidingPrecedingNodes(insertionPos); |
| |
| // Paste into run of tabs splits the tab span. |
| insertionPos = positionOutsideTabSpan(insertionPos); |
| |
| bool handledStyleSpans = handleStyleSpansBeforeInsertion(fragment, insertionPos); |
| |
| // We're finished if there is nothing to add. |
| if (fragment.isEmpty() || !fragment.firstChild()) |
| return; |
| |
| // If we are not trying to match the destination style we prefer a position |
| // that is outside inline elements that provide style. |
| // This way we can produce a less verbose markup. |
| // We can skip this optimization for fragments not wrapped in one of |
| // our style spans and for positions inside list items |
| // since insertAsListItems already does the right thing. |
| if (!m_matchStyle && !enclosingList(insertionPos.containerNode())) { |
| if (insertionPos.containerNode()->isTextNode() && insertionPos.offsetInContainerNode() && !insertionPos.atLastEditingPositionForNode()) { |
| splitTextNode(*insertionPos.containerText(), insertionPos.offsetInContainerNode()); |
| insertionPos = firstPositionInNode(insertionPos.containerNode()); |
| } |
| |
| if (RefPtr<Node> nodeToSplitTo = nodeToSplitToAvoidPastingIntoInlineNodesWithStyle(insertionPos)) { |
| if (insertionPos.containerNode() != nodeToSplitTo->parentNode()) { |
| Node* splitStart = insertionPos.computeNodeAfterPosition(); |
| if (!splitStart) |
| splitStart = insertionPos.containerNode(); |
| ASSERT(splitStart); |
| nodeToSplitTo = splitTreeToNode(*splitStart, *nodeToSplitTo->parentNode()).get(); |
| insertionPos = positionInParentBeforeNode(nodeToSplitTo.get()); |
| } |
| } |
| } |
| |
| // FIXME: When pasting rich content we're often prevented from heading down the fast path by style spans. Try |
| // again here if they've been removed. |
| |
| // 1) Insert the content. |
| // 2) Remove redundant styles and style tags, this inner <b> for example: <b>foo <b>bar</b> baz</b>. |
| // 3) Merge the start of the added content with the content before the position being pasted into. |
| // 4) Do one of the following: a) expand the last br if the fragment ends with one and it collapsed, |
| // b) merge the last paragraph of the incoming fragment with the paragraph that contained the |
| // end of the selection that was pasted into, or c) handle an interchange newline at the end of the |
| // incoming fragment. |
| // 5) Add spaces for smart replace. |
| // 6) Select the replacement if requested, and match style if requested. |
| |
| InsertedNodes insertedNodes; |
| RefPtr<Node> refNode = fragment.firstChild(); |
| RefPtr<Node> node = refNode->nextSibling(); |
| |
| if (refNode) |
| fragment.removeNode(*refNode); |
| |
| Node* blockStart = enclosingBlock(insertionPos.deprecatedNode()); |
| if ((isListHTMLElement(refNode.get()) || (isLegacyAppleStyleSpan(refNode.get()) && isListHTMLElement(refNode->firstChild()))) |
| && blockStart && blockStart->renderer()->isListItem()) |
| refNode = insertAsListItems(downcast<HTMLElement>(*refNode), blockStart, insertionPos, insertedNodes); |
| else { |
| insertNodeAt(*refNode, insertionPos); |
| insertedNodes.respondToNodeInsertion(refNode.get()); |
| } |
| |
| // Mutation events (bug 22634) may have already removed the inserted content |
| if (!refNode->isConnected()) |
| return; |
| |
| bool plainTextFragment = isPlainTextMarkup(refNode.get()); |
| |
| while (node) { |
| RefPtr<Node> next = node->nextSibling(); |
| fragment.removeNode(*node); |
| insertNodeAfter(*node, *refNode); |
| insertedNodes.respondToNodeInsertion(node.get()); |
| |
| // Mutation events (bug 22634) may have already removed the inserted content |
| if (!node->isConnected()) |
| return; |
| |
| refNode = node; |
| if (node && plainTextFragment) |
| plainTextFragment = isPlainTextMarkup(node.get()); |
| node = next; |
| } |
| |
| if (insertedNodes.isEmpty()) |
| return; |
| removeUnrenderedTextNodesAtEnds(insertedNodes); |
| |
| if (!handledStyleSpans) |
| handleStyleSpans(insertedNodes); |
| |
| // Mutation events (bug 20161) may have already removed the inserted content |
| if (insertedNodes.isEmpty()) |
| return; |
| if (!insertedNodes.firstNodeInserted()->isConnected()) |
| return; |
| |
| VisiblePosition startOfInsertedContent = firstPositionInOrBeforeNode(insertedNodes.firstNodeInserted()); |
| |
| // We inserted before the insertionBlock to prevent nesting, and the content before the insertionBlock wasn't in its own block and |
| // didn't have a br after it, so the inserted content ended up in the same paragraph. |
| if (!startOfInsertedContent.isNull() && insertionBlock && insertionPos.deprecatedNode() == insertionBlock->parentNode() && (unsigned)insertionPos.deprecatedEditingOffset() < insertionBlock->computeNodeIndex() && !isStartOfParagraph(startOfInsertedContent)) |
| insertNodeAt(HTMLBRElement::create(document()), startOfInsertedContent.deepEquivalent()); |
| |
| if (endBR && (plainTextFragment || shouldRemoveEndBR(endBR.get(), originalVisPosBeforeEndBR))) { |
| RefPtr<Node> parent = endBR->parentNode(); |
| insertedNodes.willRemoveNode(endBR.get()); |
| removeNode(*endBR); |
| if (Node* nodeToRemove = highestNodeToRemoveInPruning(parent.get())) { |
| insertedNodes.willRemoveNode(nodeToRemove); |
| removeNode(*nodeToRemove); |
| } |
| } |
| |
| makeInsertedContentRoundTrippableWithHTMLTreeBuilder(insertedNodes); |
| if (insertedNodes.isEmpty()) |
| return; |
| |
| removeRedundantStylesAndKeepStyleSpanInline(insertedNodes); |
| if (insertedNodes.isEmpty()) |
| return; |
| |
| if (m_sanitizeFragment) |
| applyCommandToComposite(SimplifyMarkupCommand::create(document(), insertedNodes.firstNodeInserted(), insertedNodes.pastLastLeaf())); |
| |
| // Setup m_startOfInsertedContent and m_endOfInsertedContent. This should be the last two lines of code that access insertedNodes. |
| m_startOfInsertedContent = firstPositionInOrBeforeNode(insertedNodes.firstNodeInserted()); |
| m_endOfInsertedContent = lastPositionInOrAfterNode(insertedNodes.lastLeafInserted()); |
| |
| // Determine whether or not we should merge the end of inserted content with what's after it before we do |
| // the start merge so that the start merge doesn't effect our decision. |
| m_shouldMergeEnd = shouldMergeEnd(selectionEndWasEndOfParagraph); |
| |
| if (shouldMergeStart(selectionStartWasStartOfParagraph, fragment.hasInterchangeNewlineAtStart(), shouldHandleMailBlockquote)) { |
| VisiblePosition startOfParagraphToMove = positionAtStartOfInsertedContent(); |
| VisiblePosition destination = startOfParagraphToMove.previous(); |
| // We need to handle the case where we need to merge the end |
| // but our destination node is inside an inline that is the last in the block. |
| // We insert a placeholder before the newly inserted content to avoid being merged into the inline. |
| Node* destinationNode = destination.deepEquivalent().deprecatedNode(); |
| if (m_shouldMergeEnd && destinationNode != enclosingInline(destinationNode) && enclosingInline(destinationNode)->nextSibling()) |
| insertNodeBefore(HTMLBRElement::create(document()), *refNode); |
| |
| // Merging the first paragraph of inserted content with the content that came |
| // before the selection that was pasted into would also move content after |
| // the selection that was pasted into if: only one paragraph was being pasted, |
| // and it was not wrapped in a block, the selection that was pasted into ended |
| // at the end of a block and the next paragraph didn't start at the start of a block. |
| // Insert a line break just after the inserted content to separate it from what |
| // comes after and prevent that from happening. |
| VisiblePosition endOfInsertedContent = positionAtEndOfInsertedContent(); |
| if (startOfParagraph(endOfInsertedContent) == startOfParagraphToMove) { |
| insertNodeAt(HTMLBRElement::create(document()), endOfInsertedContent.deepEquivalent()); |
| // Mutation events (bug 22634) triggered by inserting the <br> might have removed the content we're about to move |
| if (!startOfParagraphToMove.deepEquivalent().anchorNode()->isConnected()) |
| return; |
| } |
| |
| // FIXME: Maintain positions for the start and end of inserted content instead of keeping nodes. The nodes are |
| // only ever used to create positions where inserted content starts/ends. |
| moveParagraph(startOfParagraphToMove, endOfParagraph(startOfParagraphToMove), destination); |
| m_startOfInsertedContent = endingSelection().visibleStart().deepEquivalent().downstream(); |
| if (m_endOfInsertedContent.isOrphan()) |
| m_endOfInsertedContent = endingSelection().visibleEnd().deepEquivalent().upstream(); |
| } |
| |
| Position lastPositionToSelect; |
| if (fragment.hasInterchangeNewlineAtEnd()) { |
| VisiblePosition endOfInsertedContent = positionAtEndOfInsertedContent(); |
| VisiblePosition next = endOfInsertedContent.next(CannotCrossEditingBoundary); |
| |
| if (selectionEndWasEndOfParagraph || !isEndOfParagraph(endOfInsertedContent) || next.isNull()) { |
| if (!isStartOfParagraph(endOfInsertedContent)) { |
| setEndingSelection(endOfInsertedContent); |
| Node* enclosingNode = enclosingBlock(endOfInsertedContent.deepEquivalent().deprecatedNode()); |
| if (isListItem(enclosingNode)) { |
| auto newListItem = HTMLLIElement::create(document()); |
| insertNodeAfter(newListItem.copyRef(), *enclosingNode); |
| setEndingSelection(VisiblePosition(firstPositionInNode(newListItem.ptr()))); |
| } else { |
| // Use a default paragraph element (a plain div) for the empty paragraph, using the last paragraph |
| // block's style seems to annoy users. |
| insertParagraphSeparator(true, !shouldHandleMailBlockquote && highestEnclosingNodeOfType(endOfInsertedContent.deepEquivalent(), |
| isMailBlockquote, CannotCrossEditingBoundary, insertedNodes.firstNodeInserted()->parentNode())); |
| } |
| |
| // Select up to the paragraph separator that was added. |
| lastPositionToSelect = endingSelection().visibleStart().deepEquivalent(); |
| updateNodesInserted(lastPositionToSelect.deprecatedNode()); |
| } |
| } else { |
| // Select up to the beginning of the next paragraph. |
| lastPositionToSelect = next.deepEquivalent().downstream(); |
| } |
| |
| } else |
| mergeEndIfNeeded(); |
| |
| if (Node* mailBlockquote = enclosingNodeOfType(positionAtStartOfInsertedContent().deepEquivalent(), isMailPasteAsQuotationNode)) |
| removeNodeAttribute(downcast<Element>(*mailBlockquote), classAttr); |
| |
| if (shouldPerformSmartReplace()) |
| addSpacesForSmartReplace(); |
| |
| // If we are dealing with a fragment created from plain text |
| // no style matching is necessary. |
| if (plainTextFragment) |
| m_matchStyle = false; |
| |
| completeHTMLReplacement(lastPositionToSelect); |
| } |
| |
| String ReplaceSelectionCommand::inputEventData() const |
| { |
| if (isEditingTextAreaOrTextInput()) |
| return m_documentFragment->textContent(); |
| |
| return CompositeEditCommand::inputEventData(); |
| } |
| |
| RefPtr<DataTransfer> ReplaceSelectionCommand::inputEventDataTransfer() const |
| { |
| if (isEditingTextAreaOrTextInput()) |
| return CompositeEditCommand::inputEventDataTransfer(); |
| |
| return DataTransfer::createForInputEvent(m_documentFragmentPlainText, m_documentFragmentHTMLMarkup); |
| } |
| |
| bool ReplaceSelectionCommand::shouldRemoveEndBR(Node* endBR, const VisiblePosition& originalVisPosBeforeEndBR) |
| { |
| if (!endBR || !endBR->isConnected()) |
| return false; |
| |
| VisiblePosition visiblePos(positionBeforeNode(endBR)); |
| |
| // Don't remove the br if nothing was inserted. |
| if (visiblePos.previous() == originalVisPosBeforeEndBR) |
| return false; |
| |
| // Remove the br if it is collapsed away and so is unnecessary. |
| if (!document().inNoQuirksMode() && isEndOfBlock(visiblePos) && !isStartOfParagraph(visiblePos)) |
| return true; |
| |
| // A br that was originally holding a line open should be displaced by inserted content or turned into a line break. |
| // A br that was originally acting as a line break should still be acting as a line break, not as a placeholder. |
| return isStartOfParagraph(visiblePos) && isEndOfParagraph(visiblePos); |
| } |
| |
| bool ReplaceSelectionCommand::shouldPerformSmartReplace() const |
| { |
| if (!m_smartReplace) |
| return false; |
| |
| Element* textControl = enclosingTextFormControl(positionAtStartOfInsertedContent().deepEquivalent()); |
| if (is<HTMLInputElement>(textControl) && downcast<HTMLInputElement>(*textControl).isPasswordField()) |
| return false; // Disable smart replace for password fields. |
| |
| return true; |
| } |
| |
| static bool isCharacterSmartReplaceExemptConsideringNonBreakingSpace(UChar32 character, bool previousCharacter) |
| { |
| return isCharacterSmartReplaceExempt(character == noBreakSpace ? ' ' : character, previousCharacter); |
| } |
| |
| void ReplaceSelectionCommand::addSpacesForSmartReplace() |
| { |
| VisiblePosition startOfInsertedContent = positionAtStartOfInsertedContent(); |
| VisiblePosition endOfInsertedContent = positionAtEndOfInsertedContent(); |
| |
| Position endUpstream = endOfInsertedContent.deepEquivalent().upstream(); |
| Node* endNode = endUpstream.computeNodeBeforePosition(); |
| int endOffset = is<Text>(endNode) ? downcast<Text>(*endNode).length() : 0; |
| if (endUpstream.anchorType() == Position::PositionIsOffsetInAnchor) { |
| endNode = endUpstream.containerNode(); |
| endOffset = endUpstream.offsetInContainerNode(); |
| } |
| |
| bool needsTrailingSpace = !isEndOfParagraph(endOfInsertedContent) && !isCharacterSmartReplaceExemptConsideringNonBreakingSpace(endOfInsertedContent.characterAfter(), false); |
| if (needsTrailingSpace && endNode) { |
| bool collapseWhiteSpace = !endNode->renderer() || endNode->renderer()->style().collapseWhiteSpace(); |
| if (is<Text>(*endNode)) { |
| insertTextIntoNode(downcast<Text>(*endNode), endOffset, collapseWhiteSpace ? nonBreakingSpaceString() : " "); |
| if (m_endOfInsertedContent.containerNode() == endNode) |
| m_endOfInsertedContent.moveToOffset(m_endOfInsertedContent.offsetInContainerNode() + 1); |
| } else { |
| auto node = document().createEditingTextNode(collapseWhiteSpace ? nonBreakingSpaceString() : " "); |
| insertNodeAfter(node.copyRef(), *endNode); |
| updateNodesInserted(node.ptr()); |
| } |
| } |
| |
| document().updateLayout(); |
| |
| Position startDownstream = startOfInsertedContent.deepEquivalent().downstream(); |
| Node* startNode = startDownstream.computeNodeAfterPosition(); |
| unsigned startOffset = 0; |
| if (startDownstream.anchorType() == Position::PositionIsOffsetInAnchor) { |
| startNode = startDownstream.containerNode(); |
| startOffset = startDownstream.offsetInContainerNode(); |
| } |
| |
| bool needsLeadingSpace = !isStartOfParagraph(startOfInsertedContent) && !isCharacterSmartReplaceExemptConsideringNonBreakingSpace(startOfInsertedContent.previous().characterAfter(), true); |
| if (needsLeadingSpace && startNode) { |
| bool collapseWhiteSpace = !startNode->renderer() || startNode->renderer()->style().collapseWhiteSpace(); |
| if (is<Text>(*startNode)) { |
| insertTextIntoNode(downcast<Text>(*startNode), startOffset, collapseWhiteSpace ? nonBreakingSpaceString() : " "); |
| if (m_endOfInsertedContent.containerNode() == startNode && m_endOfInsertedContent.offsetInContainerNode()) |
| m_endOfInsertedContent.moveToOffset(m_endOfInsertedContent.offsetInContainerNode() + 1); |
| } else { |
| auto node = document().createEditingTextNode(collapseWhiteSpace ? nonBreakingSpaceString() : " "); |
| auto* nodePtr = node.ptr(); |
| // Don't updateNodesInserted. Doing so would set m_endOfInsertedContent to be the node containing the leading space, |
| // but m_endOfInsertedContent is supposed to mark the end of pasted content. |
| insertNodeBefore(WTFMove(node), *startNode); |
| m_startOfInsertedContent = firstPositionInNode(nodePtr); |
| } |
| } |
| } |
| |
| void ReplaceSelectionCommand::completeHTMLReplacement(const Position &lastPositionToSelect) |
| { |
| Position start = positionAtStartOfInsertedContent().deepEquivalent(); |
| Position end = positionAtEndOfInsertedContent().deepEquivalent(); |
| |
| // Mutation events may have deleted start or end |
| if (start.isNotNull() && !start.isOrphan() && end.isNotNull() && !end.isOrphan()) { |
| // FIXME (11475): Remove this and require that the creator of the fragment to use nbsps. |
| rebalanceWhitespaceAt(start); |
| rebalanceWhitespaceAt(end); |
| |
| if (m_matchStyle) { |
| ASSERT(m_insertionStyle); |
| applyStyle(m_insertionStyle.get(), start, end); |
| } |
| |
| if (lastPositionToSelect.isNotNull()) |
| end = lastPositionToSelect; |
| |
| mergeTextNodesAroundPosition(start, end); |
| mergeTextNodesAroundPosition(end, start); |
| } else if (lastPositionToSelect.isNotNull()) |
| start = end = lastPositionToSelect; |
| else |
| return; |
| |
| if (AXObjectCache::accessibilityEnabled() && editingAction() == EditActionPaste) |
| m_visibleSelectionForInsertedText = VisibleSelection(start, end); |
| |
| if (m_selectReplacement) |
| setEndingSelection(VisibleSelection(start, end, SEL_DEFAULT_AFFINITY, endingSelection().isDirectional())); |
| else |
| setEndingSelection(VisibleSelection(end, SEL_DEFAULT_AFFINITY, endingSelection().isDirectional())); |
| } |
| |
| void ReplaceSelectionCommand::mergeTextNodesAroundPosition(Position& position, Position& positionOnlyToBeUpdated) |
| { |
| bool positionIsOffsetInAnchor = position.anchorType() == Position::PositionIsOffsetInAnchor; |
| bool positionOnlyToBeUpdatedIsOffsetInAnchor = positionOnlyToBeUpdated.anchorType() == Position::PositionIsOffsetInAnchor; |
| RefPtr<Text> text; |
| if (positionIsOffsetInAnchor && is<Text>(position.containerNode())) |
| text = downcast<Text>(position.containerNode()); |
| else { |
| Node* before = position.computeNodeBeforePosition(); |
| if (is<Text>(before)) |
| text = downcast<Text>(before); |
| else { |
| Node* after = position.computeNodeAfterPosition(); |
| if (is<Text>(after)) |
| text = downcast<Text>(after); |
| } |
| } |
| if (!text) |
| return; |
| |
| if (is<Text>(text->previousSibling())) { |
| Ref<Text> previous(downcast<Text>(*text->previousSibling())); |
| insertTextIntoNode(*text, 0, previous->data()); |
| |
| if (positionIsOffsetInAnchor) |
| position.moveToOffset(previous->length() + position.offsetInContainerNode()); |
| else |
| updatePositionForNodeRemoval(position, previous.get()); |
| |
| if (positionOnlyToBeUpdatedIsOffsetInAnchor) { |
| if (positionOnlyToBeUpdated.containerNode() == text) |
| positionOnlyToBeUpdated.moveToOffset(previous->length() + positionOnlyToBeUpdated.offsetInContainerNode()); |
| else if (positionOnlyToBeUpdated.containerNode() == previous.ptr()) |
| positionOnlyToBeUpdated.moveToPosition(text.get(), positionOnlyToBeUpdated.offsetInContainerNode()); |
| } else |
| updatePositionForNodeRemoval(positionOnlyToBeUpdated, previous.get()); |
| |
| removeNode(previous); |
| } |
| if (is<Text>(text->nextSibling())) { |
| Ref<Text> next(downcast<Text>(*text->nextSibling())); |
| unsigned originalLength = text->length(); |
| insertTextIntoNode(*text, originalLength, next->data()); |
| |
| if (!positionIsOffsetInAnchor) |
| updatePositionForNodeRemoval(position, next.get()); |
| |
| if (positionOnlyToBeUpdatedIsOffsetInAnchor && positionOnlyToBeUpdated.containerNode() == next.ptr()) |
| positionOnlyToBeUpdated.moveToPosition(text.get(), originalLength + positionOnlyToBeUpdated.offsetInContainerNode()); |
| else |
| updatePositionForNodeRemoval(positionOnlyToBeUpdated, next.get()); |
| |
| removeNode(next); |
| } |
| } |
| |
| static HTMLElement* singleChildList(HTMLElement& element) |
| { |
| if (!element.hasOneChild()) |
| return nullptr; |
| |
| auto& child = *element.firstChild(); |
| return isListHTMLElement(&child) ? &downcast<HTMLElement>(child) : nullptr; |
| } |
| |
| static HTMLElement& deepestSingleChildList(HTMLElement& topLevelList) |
| { |
| auto* list = &topLevelList; |
| while (auto* childList = singleChildList(*list)) |
| list = childList; |
| return *list; |
| } |
| |
| // If the user is inserting a list into an existing list, instead of nesting the list, |
| // we put the list items into the existing list. |
| Node* ReplaceSelectionCommand::insertAsListItems(HTMLElement& passedListElement, Node* insertionBlock, const Position& insertPos, InsertedNodes& insertedNodes) |
| { |
| Ref<HTMLElement> listElement = deepestSingleChildList(passedListElement); |
| |
| bool isStart = isStartOfParagraph(insertPos); |
| bool isEnd = isEndOfParagraph(insertPos); |
| bool isMiddle = !isStart && !isEnd; |
| Node* lastNode = insertionBlock; |
| |
| // If we're in the middle of a list item, we should split it into two separate |
| // list items and insert these nodes between them. |
| if (isMiddle) { |
| int textNodeOffset = insertPos.offsetInContainerNode(); |
| if (is<Text>(*insertPos.deprecatedNode()) && textNodeOffset > 0) |
| splitTextNode(downcast<Text>(*insertPos.deprecatedNode()), textNodeOffset); |
| splitTreeToNode(*insertPos.deprecatedNode(), *lastNode, true); |
| } |
| |
| while (RefPtr<Node> listItem = listElement->firstChild()) { |
| listElement->removeChild(*listItem); |
| if (isStart || isMiddle) { |
| insertNodeBefore(*listItem, *lastNode); |
| insertedNodes.respondToNodeInsertion(listItem.get()); |
| } else if (isEnd) { |
| insertNodeAfter(*listItem, *lastNode); |
| insertedNodes.respondToNodeInsertion(listItem.get()); |
| lastNode = listItem.get(); |
| } else |
| ASSERT_NOT_REACHED(); |
| } |
| if ((isStart || isMiddle) && lastNode->previousSibling()) |
| lastNode = lastNode->previousSibling(); |
| return lastNode; |
| } |
| |
| void ReplaceSelectionCommand::updateNodesInserted(Node *node) |
| { |
| if (!node) |
| return; |
| |
| if (m_startOfInsertedContent.isNull()) |
| m_startOfInsertedContent = firstPositionInOrBeforeNode(node); |
| |
| m_endOfInsertedContent = lastPositionInOrAfterNode(node->lastDescendant()); |
| } |
| |
| ReplacementFragment* ReplaceSelectionCommand::ensureReplacementFragment() |
| { |
| if (!m_replacementFragment) { |
| m_replacementFragment = std::make_unique<ReplacementFragment>(document(), m_documentFragment.get(), endingSelection()); |
| removeHeadContents(*m_replacementFragment); |
| } |
| |
| return m_replacementFragment.get(); |
| } |
| |
| // During simple pastes, where we're just pasting a text node into a run of text, we insert the text node |
| // directly into the text node that holds the selection. This is much faster than the generalized code in |
| // ReplaceSelectionCommand, and works around <https://bugs.webkit.org/show_bug.cgi?id=6148> since we don't |
| // split text nodes. |
| bool ReplaceSelectionCommand::performTrivialReplace(const ReplacementFragment& fragment) |
| { |
| if (!is<Text>(fragment.firstChild()) || fragment.firstChild() != fragment.lastChild()) |
| return false; |
| |
| // FIXME: Would be nice to handle smart replace in the fast path. |
| if (m_smartReplace || fragment.hasInterchangeNewlineAtStart() || fragment.hasInterchangeNewlineAtEnd()) |
| return false; |
| |
| // e.g. when "bar" is inserted after "foo" in <div><u>foo</u></div>, "bar" should not be underlined. |
| if (nodeToSplitToAvoidPastingIntoInlineNodesWithStyle(endingSelection().start())) |
| return false; |
| |
| RefPtr<Node> nodeAfterInsertionPos = endingSelection().end().downstream().anchorNode(); |
| Text& textNode = downcast<Text>(*fragment.firstChild()); |
| // Our fragment creation code handles tabs, spaces, and newlines, so we don't have to worry about those here. |
| |
| Position start = endingSelection().start(); |
| Position end = replaceSelectedTextInNode(textNode.data()); |
| if (end.isNull()) |
| return false; |
| |
| if (nodeAfterInsertionPos && nodeAfterInsertionPos->parentNode() && nodeAfterInsertionPos->hasTagName(brTag) |
| && shouldRemoveEndBR(nodeAfterInsertionPos.get(), positionBeforeNode(nodeAfterInsertionPos.get()))) |
| removeNodeAndPruneAncestors(*nodeAfterInsertionPos); |
| |
| VisibleSelection selectionAfterReplace(m_selectReplacement ? start : end, end); |
| |
| if (AXObjectCache::accessibilityEnabled() && editingAction() == EditActionPaste) |
| m_visibleSelectionForInsertedText = VisibleSelection(start, end); |
| |
| setEndingSelection(selectionAfterReplace); |
| |
| return true; |
| } |
| |
| } // namespace WebCore |
