| /* |
| * Copyright (C) 2005, 2006, 2008 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 COMPUTER, 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 COMPUTER, 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 "core/editing/ReplaceSelectionCommand.h" |
| |
| #include "CSSPropertyNames.h" |
| #include "HTMLNames.h" |
| #include "bindings/v8/ExceptionStatePlaceholder.h" |
| #include "core/css/CSSStyleDeclaration.h" |
| #include "core/css/StylePropertySet.h" |
| #include "core/dom/BeforeTextInsertedEvent.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/DocumentFragment.h" |
| #include "core/dom/Element.h" |
| #include "core/dom/EventNames.h" |
| #include "core/dom/NodeTraversal.h" |
| #include "core/dom/Text.h" |
| #include "core/editing/ApplyStyleCommand.h" |
| #include "core/editing/BreakBlockquoteCommand.h" |
| #include "core/editing/FrameSelection.h" |
| #include "core/editing/HTMLInterchange.h" |
| #include "core/editing/SimplifyMarkupCommand.h" |
| #include "core/editing/SmartReplace.h" |
| #include "core/editing/TextIterator.h" |
| #include "core/editing/VisibleUnits.h" |
| #include "core/editing/htmlediting.h" |
| #include "core/editing/markup.h" |
| #include "core/html/HTMLElement.h" |
| #include "core/html/HTMLInputElement.h" |
| #include "core/html/HTMLTitleElement.h" |
| #include "core/page/Frame.h" |
| #include "core/rendering/RenderObject.h" |
| #include "core/rendering/RenderText.h" |
| #include "wtf/StdLibExtras.h" |
| #include "wtf/Vector.h" |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| enum EFragmentType { EmptyFragment, SingleTextNodeFragment, TreeFragment }; |
| |
| // --- ReplacementFragment helper class |
| |
| class ReplacementFragment { |
| WTF_MAKE_NONCOPYABLE(ReplacementFragment); |
| public: |
| ReplacementFragment(Document*, DocumentFragment*, const VisibleSelection&); |
| |
| Node* firstChild() const; |
| Node* lastChild() const; |
| |
| bool isEmpty() const; |
| |
| bool hasInterchangeNewlineAtStart() const { return m_hasInterchangeNewlineAtStart; } |
| bool hasInterchangeNewlineAtEnd() const { return m_hasInterchangeNewlineAtEnd; } |
| |
| void removeNode(PassRefPtr<Node>); |
| void removeNodePreservingChildren(PassRefPtr<Node>); |
| |
| private: |
| PassRefPtr<Element> insertFragmentForTestRendering(Node* rootEditableNode); |
| void removeUnrenderedNodes(Node*); |
| void restoreAndRemoveTestRenderingNodesToFragment(Element*); |
| void removeInterchangeNodes(Node*); |
| |
| void insertNodeBefore(PassRefPtr<Node> node, Node* refNode); |
| |
| RefPtr<Document> m_document; |
| RefPtr<DocumentFragment> m_fragment; |
| bool m_hasInterchangeNewlineAtStart; |
| bool m_hasInterchangeNewlineAtEnd; |
| }; |
| |
| static bool isInterchangeNewlineNode(const Node *node) |
| { |
| DEFINE_STATIC_LOCAL(String, interchangeNewlineClassString, (AppleInterchangeNewline)); |
| return node && node->hasTagName(brTag) && toElement(node)->getAttribute(classAttr) == interchangeNewlineClassString; |
| } |
| |
| static bool isInterchangeConvertedSpaceSpan(const Node *node) |
| { |
| DEFINE_STATIC_LOCAL(String, convertedSpaceSpanClassString, (AppleConvertedSpace)); |
| return node->isHTMLElement() && |
| static_cast<const HTMLElement *>(node)->getAttribute(classAttr) == convertedSpaceSpanClassString; |
| } |
| |
| static Position positionAvoidingPrecedingNodes(Position pos) |
| { |
| // If we're already on a break, it's probably a placeholder and we shouldn't change our position. |
| if (editingIgnoresContent(pos.deprecatedNode())) |
| return pos; |
| |
| // 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. |
| Node* enclosingBlockNode = enclosingBlock(pos.containerNode()); |
| for (Position nextPosition = pos; nextPosition.containerNode() != enclosingBlockNode; pos = nextPosition) { |
| if (lineBreakExistsAtPosition(pos)) |
| break; |
| |
| if (pos.containerNode()->nonShadowBoundaryParentNode()) |
| nextPosition = positionInParentAfterNode(pos.containerNode()); |
| |
| if (nextPosition == pos |
| || enclosingBlock(nextPosition.containerNode()) != enclosingBlockNode |
| || VisiblePosition(pos) != VisiblePosition(nextPosition)) |
| break; |
| } |
| return pos; |
| } |
| |
| ReplacementFragment::ReplacementFragment(Document* document, DocumentFragment* fragment, const VisibleSelection& selection) |
| : m_document(document), |
| m_fragment(fragment), |
| m_hasInterchangeNewlineAtStart(false), |
| m_hasInterchangeNewlineAtEnd(false) |
| { |
| if (!m_document) |
| return; |
| 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->getAttributeEventListener(eventNames().webkitBeforeTextInsertedEvent) && |
| // FIXME: Remove these checks once textareas and textfields actually register an event handler. |
| !(shadowAncestorNode && shadowAncestorNode->renderer() && shadowAncestorNode->renderer()->isTextControl()) && |
| editableRoot->rendererIsRichlyEditable()) { |
| removeInterchangeNodes(m_fragment.get()); |
| return; |
| } |
| |
| RefPtr<Element> 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. |
| RefPtr<BeforeTextInsertedEvent> evt = BeforeTextInsertedEvent::create(text); |
| editableRoot->dispatchEvent(evt, ASSERT_NO_EXCEPTION); |
| if (text != evt->text() || !editableRoot->rendererIsRichlyEditable()) { |
| restoreAndRemoveTestRenderingNodesToFragment(holder.get()); |
| |
| m_fragment = createFragmentFromText(selection.toNormalizedRange().get(), evt->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(PassRefPtr<Node> node) |
| { |
| if (!node) |
| return; |
| |
| while (RefPtr<Node> n = node->firstChild()) { |
| removeNode(n); |
| insertNodeBefore(n.release(), node.get()); |
| } |
| removeNode(node); |
| } |
| |
| void ReplacementFragment::removeNode(PassRefPtr<Node> node) |
| { |
| if (!node) |
| return; |
| |
| ContainerNode* parent = node->nonShadowBoundaryParentNode(); |
| if (!parent) |
| return; |
| |
| parent->removeChild(node.get()); |
| } |
| |
| void ReplacementFragment::insertNodeBefore(PassRefPtr<Node> node, Node* refNode) |
| { |
| if (!node || !refNode) |
| return; |
| |
| ContainerNode* parent = refNode->nonShadowBoundaryParentNode(); |
| if (!parent) |
| return; |
| |
| parent->insertBefore(node, refNode); |
| } |
| |
| PassRefPtr<Element> ReplacementFragment::insertFragmentForTestRendering(Node* rootEditableElement) |
| { |
| RefPtr<Element> holder = createDefaultParagraphElement(m_document.get()); |
| |
| holder->appendChild(m_fragment); |
| rootEditableElement->appendChild(holder.get()); |
| m_document->updateLayoutIgnorePendingStylesheets(); |
| |
| return holder.release(); |
| } |
| |
| void ReplacementFragment::restoreAndRemoveTestRenderingNodesToFragment(Element* holder) |
| { |
| if (!holder) |
| return; |
| |
| while (RefPtr<Node> node = holder->firstChild()) { |
| holder->removeChild(node.get()); |
| m_fragment->appendChild(node.get()); |
| } |
| |
| removeNode(holder); |
| } |
| |
| void ReplacementFragment::removeUnrenderedNodes(Node* holder) |
| { |
| Vector<RefPtr<Node> > unrendered; |
| |
| for (Node* node = holder->firstChild(); node; node = NodeTraversal::next(node, holder)) |
| if (!isNodeRendered(node) && !isTableStructureNode(node)) |
| unrendered.append(node); |
| |
| size_t n = unrendered.size(); |
| for (size_t i = 0; i < n; ++i) |
| removeNode(unrendered[i]); |
| } |
| |
| 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 = 0; |
| m_lastNodeInserted = 0; |
| } else if (m_firstNodeInserted == node) |
| m_firstNodeInserted = NodeTraversal::nextSkippingChildren(m_firstNodeInserted.get()); |
| else if (m_lastNodeInserted == node) |
| m_lastNodeInserted = NodeTraversal::previousSkippingChildren(m_lastNodeInserted.get()); |
| } |
| |
| 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, PassRefPtr<DocumentFragment> fragment, CommandOptions options, EditAction editAction) |
| : CompositeEditCommand(document) |
| , m_selectReplacement(options & SelectReplacement) |
| , m_smartReplace(options & SmartReplace) |
| , m_matchStyle(options & MatchStyle) |
| , m_documentFragment(fragment) |
| , m_preventNesting(options & PreventNesting) |
| , m_movingParagraph(options & MovingParagraph) |
| , m_editAction(editAction) |
| , m_sanitizeFragment(options & SanitizeFragment) |
| , m_shouldMergeEnd(false) |
| { |
| } |
| |
| 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) && node->isElementNode() && toElement(node)->getAttribute(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 a && b && a->isElementNode() && b->isElementNode() && toElement(a)->tagName() == toElement(b)->tagName(); |
| } |
| |
| bool ReplaceSelectionCommand::shouldMerge(const VisiblePosition& source, const VisiblePosition& destination) |
| { |
| if (source.isNull() || destination.isNull()) |
| return false; |
| |
| Node* sourceNode = source.deepEquivalent().deprecatedNode(); |
| Node* destinationNode = destination.deepEquivalent().deprecatedNode(); |
| Node* sourceBlock = enclosingBlock(sourceNode); |
| Node* 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.get()); |
| if (!node->isStyledElement()) |
| continue; |
| |
| Element* element = toElement(node.get()); |
| |
| const StylePropertySet* inlineStyle = element->inlineStyle(); |
| RefPtr<EditingStyle> newInlineStyle = EditingStyle::create(inlineStyle); |
| if (inlineStyle) { |
| if (element->isHTMLElement()) { |
| Vector<QualifiedName> attributes; |
| HTMLElement* htmlElement = toHTMLElement(element); |
| |
| if (newInlineStyle->conflictsWithImplicitStyleOfElement(htmlElement)) { |
| // e.g. <b style="font-weight: normal;"> is converted to <span style="font-weight: normal;"> |
| node = replaceElementWithSpanPreservingChildrenAndAttributes(htmlElement); |
| element = toElement(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 (size_t i = 0; i < attributes.size(); i++) |
| removeNodeAttribute(element, attributes[i]); |
| } |
| } |
| |
| 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 = !context || 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 (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()->rendererIsRichlyEditable()) |
| 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->style()->setPropertyInternal(CSSPropertyDisplay, "inline", false, IGNORE_EXCEPTION); |
| if (element->renderer() && element->renderer()->style()->isFloating()) |
| element->style()->setPropertyInternal(CSSPropertyFloat, "none", false, IGNORE_EXCEPTION); |
| } |
| } |
| } |
| |
| static bool isProhibitedParagraphChild(const AtomicString& name) |
| { |
| // https://dvcs.w3.org/hg/editing/raw-file/57abe6d3cb60/editing.html#prohibited-paragraph-child |
| DEFINE_STATIC_LOCAL(HashSet<AtomicString>, elements, ()); |
| if (elements.isEmpty()) { |
| elements.add(addressTag.localName()); |
| elements.add(articleTag.localName()); |
| elements.add(asideTag.localName()); |
| elements.add(blockquoteTag.localName()); |
| elements.add(captionTag.localName()); |
| elements.add(centerTag.localName()); |
| elements.add(colTag.localName()); |
| elements.add(colgroupTag.localName()); |
| elements.add(ddTag.localName()); |
| elements.add(detailsTag.localName()); |
| elements.add(dirTag.localName()); |
| elements.add(divTag.localName()); |
| elements.add(dlTag.localName()); |
| elements.add(dtTag.localName()); |
| elements.add(fieldsetTag.localName()); |
| elements.add(figcaptionTag.localName()); |
| elements.add(figureTag.localName()); |
| elements.add(footerTag.localName()); |
| elements.add(formTag.localName()); |
| elements.add(h1Tag.localName()); |
| elements.add(h2Tag.localName()); |
| elements.add(h3Tag.localName()); |
| elements.add(h4Tag.localName()); |
| elements.add(h5Tag.localName()); |
| elements.add(h6Tag.localName()); |
| elements.add(headerTag.localName()); |
| elements.add(hgroupTag.localName()); |
| elements.add(hrTag.localName()); |
| elements.add(liTag.localName()); |
| elements.add(listingTag.localName()); |
| elements.add(mainTag.localName()); // Missing in the specification. |
| elements.add(menuTag.localName()); |
| elements.add(navTag.localName()); |
| elements.add(olTag.localName()); |
| elements.add(pTag.localName()); |
| elements.add(plaintextTag.localName()); |
| elements.add(preTag.localName()); |
| elements.add(sectionTag.localName()); |
| elements.add(summaryTag.localName()); |
| elements.add(tableTag.localName()); |
| elements.add(tbodyTag.localName()); |
| elements.add(tdTag.localName()); |
| elements.add(tfootTag.localName()); |
| elements.add(thTag.localName()); |
| elements.add(theadTag.localName()); |
| elements.add(trTag.localName()); |
| elements.add(ulTag.localName()); |
| elements.add(xmpTag.localName()); |
| } |
| return elements.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.get()); |
| |
| if (!node->isHTMLElement()) |
| continue; |
| |
| if (isProhibitedParagraphChild(toHTMLElement(node.get())->localName())) { |
| if (HTMLElement* paragraphElement = toHTMLElement(enclosingNodeWithTag(positionInParentBeforeNode(node.get()), pTag))) |
| moveNodeOutOfAncestor(node, paragraphElement); |
| } |
| |
| if (isHeaderElement(node.get())) { |
| if (HTMLElement* headerElement = toHTMLElement(highestEnclosingNodeOfType(positionInParentBeforeNode(node.get()), isHeaderElement))) |
| moveNodeOutOfAncestor(node, headerElement); |
| } |
| } |
| } |
| |
| void ReplaceSelectionCommand::moveNodeOutOfAncestor(PassRefPtr<Node> prpNode, PassRefPtr<Node> prpAncestor) |
| { |
| RefPtr<Node> node = prpNode; |
| RefPtr<Node> ancestor = prpAncestor; |
| |
| if (!ancestor->parentNode()->rendererIsEditable()) |
| return; |
| |
| VisiblePosition positionAtEndOfNode = lastPositionInOrAfterNode(node.get()); |
| VisiblePosition lastPositionInParagraph = lastPositionInNode(ancestor.get()); |
| if (positionAtEndOfNode == lastPositionInParagraph) { |
| removeNode(node); |
| if (ancestor->nextSibling()) |
| insertNodeBefore(node, ancestor->nextSibling()); |
| else |
| appendNode(node, ancestor->parentNode()); |
| } else { |
| RefPtr<Node> nodeToSplitTo = splitTreeToNode(node.get(), ancestor.get(), true); |
| removeNode(node); |
| insertNodeBefore(node, nodeToSplitTo); |
| } |
| if (!ancestor->firstChild()) |
| removeNode(ancestor.release()); |
| } |
| |
| static inline bool nodeHasVisibleRenderText(Text* text) |
| { |
| return text->renderer() && toRenderText(text->renderer())->renderedTextLength() > 0; |
| } |
| |
| void ReplaceSelectionCommand::removeUnrenderedTextNodesAtEnds(InsertedNodes& insertedNodes) |
| { |
| document()->updateLayoutIgnorePendingStylesheets(); |
| |
| Node* lastLeafInserted = insertedNodes.lastLeafInserted(); |
| if (lastLeafInserted && lastLeafInserted->isTextNode() && !nodeHasVisibleRenderText(toText(lastLeafInserted)) |
| && !enclosingNodeWithTag(firstPositionInOrBeforeNode(lastLeafInserted), selectTag) |
| && !enclosingNodeWithTag(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 (firstNodeInserted && firstNodeInserted->isTextNode() && !nodeHasVisibleRenderText(toText(firstNodeInserted))) { |
| insertedNodes.willRemoveNode(firstNodeInserted); |
| removeNode(firstNodeInserted); |
| } |
| } |
| |
| VisiblePosition ReplaceSelectionCommand::positionAtEndOfInsertedContent() const |
| { |
| // FIXME: Why is this hack here? What's special about <select> tags? |
| Node* enclosingSelect = enclosingNodeWithTag(m_endOfInsertedContent, selectTag); |
| return enclosingSelect ? lastPositionInOrAfterNode(enclosingSelect) : m_endOfInsertedContent; |
| } |
| |
| VisiblePosition ReplaceSelectionCommand::positionAtStartOfInsertedContent() const |
| { |
| return m_startOfInsertedContent; |
| } |
| |
| static void removeHeadContents(ReplacementFragment& fragment) |
| { |
| Node* next = 0; |
| for (Node* node = fragment.firstChild(); node; node = next) { |
| if (node->hasTagName(baseTag) |
| || node->hasTagName(linkTag) |
| || node->hasTagName(metaTag) |
| || node->hasTagName(styleTag) |
| || isHTMLTitleElement(node)) { |
| next = NodeTraversal::nextSkippingChildren(node); |
| fragment.removeNode(node); |
| } else |
| next = NodeTraversal::next(node); |
| } |
| } |
| |
| // 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 != toElement(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 = 0; |
| // 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 = toHTMLElement(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) { |
| RefPtr<Node> placeholder = createBreakElement(document()); |
| insertNodeBefore(placeholder, startOfParagraphToMove.deepEquivalent().deprecatedNode()); |
| destination = VisiblePosition(positionBeforeNode(placeholder.get())); |
| } |
| |
| 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 (parent->isBlockFlowElement() || parent->hasTagName(bodyTag)) |
| return node; |
| // Stop if any previous sibling is a block. |
| for (Node* sibling = node->previousSibling(); sibling; sibling = sibling->previousSibling()) { |
| if (sibling->isBlockFlowElement()) |
| 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->getAttribute(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); |
| } |
| |
| void ReplaceSelectionCommand::doApply() |
| { |
| VisibleSelection selection = endingSelection(); |
| ASSERT(selection.isCaretOrRange()); |
| ASSERT(selection.start().deprecatedNode()); |
| if (!selection.isNonOrphanedCaretOrRange() || !selection.start().deprecatedNode()) |
| return; |
| |
| if (!selection.rootEditableElement()) |
| return; |
| |
| ReplacementFragment fragment(document(), m_documentFragment.get(), selection); |
| 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 startIsInsideMailBlockquote = enclosingNodeOfType(insertionPos, isMailBlockquote, CanCrossEditingBoundary); |
| bool selectionIsPlainText = !selection.isContentRichlyEditable(); |
| Element* currentRoot = selection.rootEditableElement(); |
| |
| if ((selectionStartWasStartOfParagraph && selectionEndWasEndOfParagraph && !startIsInsideMailBlockquote) || |
| 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 = startIsInsideMailBlockquote || 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. |
| deleteSelection(false, mergeBlocksAfterDelete, true, false); |
| 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 && !startIsInsideMailBlockquote && !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 (startIsInsideMailBlockquote && 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]). |
| Node* endBR = insertionPos.downstream().deprecatedNode()->hasTagName(brTag) ? insertionPos.downstream().deprecatedNode() : 0; |
| VisiblePosition originalVisPosBeforeEndBR; |
| if (endBR) |
| originalVisPosBeforeEndBR = VisiblePosition(positionBeforeNode(endBR), DOWNSTREAM).previous(); |
| |
| startBlock = 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 && startBlock && !isTableCell(startBlock) && !startIsInsideMailBlockquote) { |
| ASSERT(startBlock != currentRoot); |
| VisiblePosition visibleInsertionPos(insertionPos); |
| if (isEndOfBlock(visibleInsertionPos) && !(isStartOfBlock(visibleInsertionPos) && fragment.hasInterchangeNewlineAtEnd())) |
| insertionPos = positionInParentAfterNode(startBlock); |
| else if (isStartOfBlock(visibleInsertionPos)) |
| insertionPos = positionInParentBeforeNode(startBlock); |
| } |
| |
| // 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. |
| if (Frame* frame = document()->frame()) |
| frame->selection()->clearTypingStyle(); |
| |
| removeHeadContents(fragment); |
| |
| // 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(); |
| 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(); |
| |
| fragment.removeNode(refNode); |
| |
| Node* blockStart = enclosingBlock(insertionPos.deprecatedNode()); |
| if ((isListElement(refNode.get()) || (isLegacyAppleStyleSpan(refNode.get()) && isListElement(refNode->firstChild()))) |
| && blockStart && blockStart->renderer()->isListItem()) |
| refNode = insertAsListItems(toHTMLElement(refNode.get()), blockStart, insertionPos, insertedNodes); |
| else { |
| insertNodeAt(refNode, insertionPos); |
| insertedNodes.respondToNodeInsertion(refNode.get()); |
| } |
| |
| // Mutation events (bug 22634) may have already removed the inserted content |
| if (!refNode->inDocument()) |
| return; |
| |
| bool plainTextFragment = isPlainTextMarkup(refNode.get()); |
| |
| while (node) { |
| RefPtr<Node> next = node->nextSibling(); |
| fragment.removeNode(node.get()); |
| insertNodeAfter(node, refNode.get()); |
| insertedNodes.respondToNodeInsertion(node.get()); |
| |
| // Mutation events (bug 22634) may have already removed the inserted content |
| if (!node->inDocument()) |
| return; |
| |
| refNode = node; |
| if (node && plainTextFragment) |
| plainTextFragment = isPlainTextMarkup(node.get()); |
| node = next; |
| } |
| |
| removeUnrenderedTextNodesAtEnds(insertedNodes); |
| |
| if (!handledStyleSpans) |
| handleStyleSpans(insertedNodes); |
| |
| // Mutation events (bug 20161) may have already removed the inserted content |
| if (!insertedNodes.firstNodeInserted() || !insertedNodes.firstNodeInserted()->inDocument()) |
| return; |
| |
| VisiblePosition startOfInsertedContent = firstPositionInOrBeforeNode(insertedNodes.firstNodeInserted()); |
| |
| // We inserted before the startBlock to prevent nesting, and the content before the startBlock 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 (startBlock && insertionPos.deprecatedNode() == startBlock->parentNode() && (unsigned)insertionPos.deprecatedEditingOffset() < startBlock->nodeIndex() && !isStartOfParagraph(startOfInsertedContent)) |
| insertNodeAt(createBreakElement(document()).get(), startOfInsertedContent.deepEquivalent()); |
| |
| if (endBR && (plainTextFragment || shouldRemoveEndBR(endBR, originalVisPosBeforeEndBR))) { |
| RefPtr<Node> parent = endBR->parentNode(); |
| insertedNodes.willRemoveNode(endBR); |
| removeNode(endBR); |
| if (Node* nodeToRemove = highestNodeToRemoveInPruning(parent.get())) { |
| insertedNodes.willRemoveNode(nodeToRemove); |
| removeNode(nodeToRemove); |
| } |
| } |
| |
| makeInsertedContentRoundTrippableWithHTMLTreeBuilder(insertedNodes); |
| |
| removeRedundantStylesAndKeepStyleSpanInline(insertedNodes); |
| |
| 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(), startIsInsideMailBlockquote)) { |
| 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(createBreakElement(document()), refNode.get()); |
| |
| // Merging the 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(createBreakElement(document()).get(), 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()->inDocument()) |
| 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)) { |
| RefPtr<Node> newListItem = createListItemElement(document()); |
| insertNodeAfter(newListItem, enclosingNode); |
| setEndingSelection(VisiblePosition(firstPositionInNode(newListItem.get()))); |
| } 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, !startIsInsideMailBlockquote && 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(toElement(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); |
| } |
| |
| bool ReplaceSelectionCommand::shouldRemoveEndBR(Node* endBR, const VisiblePosition& originalVisPosBeforeEndBR) |
| { |
| if (!endBR || !endBR->inDocument()) |
| 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 (textControl && textControl->hasTagName(inputTag) && toHTMLInputElement(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 = endNode && endNode->isTextNode() ? toText(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 (endNode->isTextNode()) { |
| insertTextIntoNode(toText(endNode), endOffset, collapseWhiteSpace ? nonBreakingSpaceString() : " "); |
| if (m_endOfInsertedContent.containerNode() == endNode) |
| m_endOfInsertedContent.moveToOffset(m_endOfInsertedContent.offsetInContainerNode() + 1); |
| } else { |
| RefPtr<Node> node = document()->createEditingTextNode(collapseWhiteSpace ? nonBreakingSpaceString() : " "); |
| insertNodeAfter(node, endNode); |
| updateNodesInserted(node.get()); |
| } |
| } |
| |
| 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 (startNode->isTextNode()) { |
| insertTextIntoNode(toText(startNode), startOffset, collapseWhiteSpace ? nonBreakingSpaceString() : " "); |
| if (m_endOfInsertedContent.containerNode() == startNode && m_endOfInsertedContent.offsetInContainerNode()) |
| m_endOfInsertedContent.moveToOffset(m_endOfInsertedContent.offsetInContainerNode() + 1); |
| } else { |
| RefPtr<Node> node = document()->createEditingTextNode(collapseWhiteSpace ? nonBreakingSpaceString() : " "); |
| // 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(node, startNode); |
| m_startOfInsertedContent = firstPositionInNode(node.get()); |
| } |
| } |
| } |
| |
| 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); |
| } else if (lastPositionToSelect.isNotNull()) |
| start = end = lastPositionToSelect; |
| else |
| return; |
| |
| 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 = 0; |
| if (positionIsOffsetInAnchor && position.containerNode() && position.containerNode()->isTextNode()) |
| text = toText(position.containerNode()); |
| else { |
| Node* before = position.computeNodeBeforePosition(); |
| if (before && before->isTextNode()) |
| text = toText(before); |
| else { |
| Node* after = position.computeNodeAfterPosition(); |
| if (after && after->isTextNode()) |
| text = toText(after); |
| } |
| } |
| if (!text) |
| return; |
| |
| if (text->previousSibling() && text->previousSibling()->isTextNode()) { |
| RefPtr<Text> previous = toText(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) |
| positionOnlyToBeUpdated.moveToPosition(text, positionOnlyToBeUpdated.offsetInContainerNode()); |
| } else |
| updatePositionForNodeRemoval(positionOnlyToBeUpdated, previous.get()); |
| |
| removeNode(previous); |
| } |
| if (text->nextSibling() && text->nextSibling()->isTextNode()) { |
| RefPtr<Text> next = toText(text->nextSibling()); |
| unsigned originalLength = text->length(); |
| insertTextIntoNode(text, originalLength, next->data()); |
| |
| if (!positionIsOffsetInAnchor) |
| updatePositionForNodeRemoval(position, next.get()); |
| |
| if (positionOnlyToBeUpdatedIsOffsetInAnchor && positionOnlyToBeUpdated.containerNode() == next) |
| positionOnlyToBeUpdated.moveToPosition(text, originalLength + positionOnlyToBeUpdated.offsetInContainerNode()); |
| else |
| updatePositionForNodeRemoval(positionOnlyToBeUpdated, next.get()); |
| |
| removeNode(next); |
| } |
| } |
| |
| EditAction ReplaceSelectionCommand::editingAction() const |
| { |
| return m_editAction; |
| } |
| |
| // 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(PassRefPtr<HTMLElement> prpListElement, Node* insertionBlock, const Position& insertPos, InsertedNodes& insertedNodes) |
| { |
| RefPtr<HTMLElement> listElement = prpListElement; |
| |
| while (listElement->hasChildNodes() && isListElement(listElement->firstChild()) && listElement->childNodeCount() == 1) |
| listElement = toHTMLElement(listElement->firstChild()); |
| |
| 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 (insertPos.deprecatedNode()->isTextNode() && textNodeOffset > 0) |
| splitTextNode(toText(insertPos.deprecatedNode()), textNodeOffset); |
| splitTreeToNode(insertPos.deprecatedNode(), lastNode, true); |
| } |
| |
| while (RefPtr<Node> listItem = listElement->firstChild()) { |
| listElement->removeChild(listItem.get(), ASSERT_NO_EXCEPTION); |
| 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 = 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()); |
| } |
| |
| // 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 (!fragment.firstChild() || fragment.firstChild() != fragment.lastChild() || !fragment.firstChild()->isTextNode()) |
| 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 = toText(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.get()); |
| |
| VisibleSelection selectionAfterReplace(m_selectReplacement ? start : end, end); |
| |
| setEndingSelection(selectionAfterReplace); |
| |
| return true; |
| } |
| |
| } // namespace WebCore |
