Source/core/editing/ReplaceSelectionCommand.cpp - Issue 1294543005: Move execCommand related files in core/editing/ related files into core/editing/commands/

Unified Diff: Source/core/editing/ReplaceSelectionCommand.cpp

Issue 1294543005: Move execCommand related files in core/editing/ related files into core/editing/commands/ (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: 2015-08-18T14:20:58 Rebase for merging code style fixes Created 5 years, 4 months ago

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Index: Source/core/editing/ReplaceSelectionCommand.cpp

diff --git a/Source/core/editing/ReplaceSelectionCommand.cpp b/Source/core/editing/ReplaceSelectionCommand.cpp

deleted file mode 100644

index 8493bc856a70449c88a905305b50969df9b36ad9..0000000000000000000000000000000000000000

--- a/Source/core/editing/ReplaceSelectionCommand.cpp

+++ /dev/null

@@ -1,1558 +0,0 @@

-/*

- *

- * 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 "bindings/core/v8/ExceptionStatePlaceholder.h"

-#include "core/CSSPropertyNames.h"

-#include "core/HTMLNames.h"

-#include "core/InputTypeNames.h"

-#include "core/css/CSSStyleDeclaration.h"

-#include "core/css/StylePropertySet.h"

-#include "core/dom/Document.h"

-#include "core/dom/DocumentFragment.h"

-#include "core/dom/Element.h"

-#include "core/dom/Text.h"

-#include "core/editing/ApplyStyleCommand.h"

-#include "core/editing/BreakBlockquoteCommand.h"

-#include "core/editing/EditingUtilities.h"

-#include "core/editing/FrameSelection.h"

-#include "core/editing/SimplifyMarkupCommand.h"

-#include "core/editing/SmartReplace.h"

-#include "core/editing/VisibleUnits.h"

-#include "core/editing/iterators/TextIterator.h"

-#include "core/editing/serializers/HTMLInterchange.h"

-#include "core/editing/serializers/Serialization.h"

-#include "core/events/BeforeTextInsertedEvent.h"

-#include "core/frame/LocalFrame.h"

-#include "core/frame/UseCounter.h"

-#include "core/html/HTMLBRElement.h"

-#include "core/html/HTMLElement.h"

-#include "core/html/HTMLInputElement.h"

-#include "core/html/HTMLLIElement.h"

-#include "core/html/HTMLQuoteElement.h"

-#include "core/html/HTMLSelectElement.h"

-#include "core/html/HTMLSpanElement.h"

-#include "core/layout/LayoutObject.h"

-#include "core/layout/LayoutText.h"

-#include "wtf/StdLibExtras.h"

-#include "wtf/Vector.h"

-namespace blink {

-using namespace HTMLNames;

-enum EFragmentType { EmptyFragment, SingleTextNodeFragment, TreeFragment };

-// --- ReplacementFragment helper class

-class ReplacementFragment final {

- WTF_MAKE_NONCOPYABLE(ReplacementFragment);

- STACK_ALLOCATED();

-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(PassRefPtrWillBeRawPtr<Node>);

- void removeNodePreservingChildren(PassRefPtrWillBeRawPtr<ContainerNode>);

-private:

- PassRefPtrWillBeRawPtr<HTMLElement> insertFragmentForTestRendering(Element* rootEditableElement);

- void removeUnrenderedNodes(ContainerNode*);

- void restoreAndRemoveTestRenderingNodesToFragment(Element*);

- void removeInterchangeNodes(ContainerNode*);

- void insertNodeBefore(PassRefPtrWillBeRawPtr<Node>, Node* refNode);

- RefPtrWillBeMember<Document> m_document;

- RefPtrWillBeMember<DocumentFragment> m_fragment;

- bool m_hasInterchangeNewlineAtStart;

- bool m_hasInterchangeNewlineAtEnd;

-};

-static bool isInterchangeHTMLBRElement(const Node* node)

- DEFINE_STATIC_LOCAL(String, interchangeNewlineClassString, (AppleInterchangeNewline));

- if (!isHTMLBRElement(node) || toHTMLBRElement(node)->getAttribute(classAttr) != interchangeNewlineClassString)

- return false;

- UseCounter::count(node->document(), UseCounter::EditingAppleInterchangeNewline);

- return true;

-static bool isHTMLInterchangeConvertedSpaceSpan(const Node* node)

- DEFINE_STATIC_LOCAL(String, convertedSpaceSpanClassString, (AppleConvertedSpace));

- if (!node->isHTMLElement() || toHTMLElement(node)->getAttribute(classAttr) != convertedSpaceSpanClassString)

- return false;

- UseCounter::count(node->document(), UseCounter::EditingAppleConvertedSpace);

- return true;

-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.anchorNode()))

- 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.

- Element* enclosingBlockElement = enclosingBlock(pos.computeContainerNode());

- for (Position nextPosition = pos; nextPosition.computeContainerNode() != enclosingBlockElement; pos = nextPosition) {

- if (lineBreakExistsAtPosition(pos))

- break;

- if (pos.computeContainerNode()->nonShadowBoundaryParentNode())

- nextPosition = positionInParentAfterNode(*pos.computeContainerNode());

- if (nextPosition == pos

- || enclosingBlock(nextPosition.computeContainerNode()) != enclosingBlockElement

- || VisiblePosition(pos).deepEquivalent() != VisiblePosition(nextPosition).deepEquivalent())

- 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 || !m_fragment->hasChildren())

- return;

- RefPtrWillBeRawPtr<Element> editableRoot = selection.rootEditableElement();

- ASSERT(editableRoot);

- if (!editableRoot)

- return;

- Element* shadowAncestorElement;

- if (editableRoot->isInShadowTree())

- shadowAncestorElement = editableRoot->shadowHost();

- else

- shadowAncestorElement = editableRoot.get();

- if (!editableRoot->getAttributeEventListener(EventTypeNames::webkitBeforeTextInserted)

- // FIXME: Remove these checks once textareas and textfields actually register an event handler.

- && !(shadowAncestorElement && shadowAncestorElement->layoutObject() && shadowAncestorElement->layoutObject()->isTextControl())

- && editableRoot->layoutObjectIsRichlyEditable()) {

- removeInterchangeNodes(m_fragment.get());

- return;

- }

- RefPtrWillBeRawPtr<HTMLElement> holder = insertFragmentForTestRendering(editableRoot.get());

- if (!holder) {

- removeInterchangeNodes(m_fragment.get());

- return;

- }

- const EphemeralRange range = VisibleSelection::selectionFromContentsOfNode(holder.get()).toNormalizedEphemeralRange();

- String text = plainText(range, static_cast<TextIteratorBehavior>(TextIteratorEmitsOriginalText | TextIteratorIgnoresStyleVisibility));

- removeInterchangeNodes(holder.get());

- removeUnrenderedNodes(holder.get());

- restoreAndRemoveTestRenderingNodesToFragment(holder.get());

- // Give the root a chance to change the text.

- RefPtrWillBeRawPtr<BeforeTextInsertedEvent> evt = BeforeTextInsertedEvent::create(text);

- editableRoot->dispatchEvent(evt);

- if (text != evt->text() || !editableRoot->layoutObjectIsRichlyEditable()) {

- restoreAndRemoveTestRenderingNodesToFragment(holder.get());

- m_fragment = createFragmentFromText(selection.toNormalizedEphemeralRange(), evt->text());

- if (!m_fragment->hasChildren())

- return;

- holder = insertFragmentForTestRendering(editableRoot.get());

- removeInterchangeNodes(holder.get());

- removeUnrenderedNodes(holder.get());

- restoreAndRemoveTestRenderingNodesToFragment(holder.get());

- }

-bool ReplacementFragment::isEmpty() const

- return (!m_fragment || !m_fragment->hasChildren()) && !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(PassRefPtrWillBeRawPtr<ContainerNode> node)

- if (!node)

- return;

- while (RefPtrWillBeRawPtr<Node> n = node->firstChild()) {

- removeNode(n);

- insertNodeBefore(n.release(), node.get());

- }

- removeNode(node);

-void ReplacementFragment::removeNode(PassRefPtrWillBeRawPtr<Node> node)

- if (!node)

- return;

- ContainerNode* parent = node->nonShadowBoundaryParentNode();

- if (!parent)

- return;

- parent->removeChild(node.get());

-void ReplacementFragment::insertNodeBefore(PassRefPtrWillBeRawPtr<Node> node, Node* refNode)

- if (!node || !refNode)

- return;

- ContainerNode* parent = refNode->nonShadowBoundaryParentNode();

- if (!parent)

- return;

- parent->insertBefore(node, refNode);

-PassRefPtrWillBeRawPtr<HTMLElement> ReplacementFragment::insertFragmentForTestRendering(Element* rootEditableElement)

- ASSERT(m_document);

- RefPtrWillBeRawPtr<HTMLElement> 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 (RefPtrWillBeRawPtr<Node> node = holder->firstChild()) {

- holder->removeChild(node.get());

- m_fragment->appendChild(node.get());

- }

- removeNode(holder);

-void ReplacementFragment::removeUnrenderedNodes(ContainerNode* holder)

- WillBeHeapVector<RefPtrWillBeMember<Node>> unrendered;

- for (Node& node : NodeTraversal::descendantsOf(*holder)) {

- if (!isNodeRendered(node) && !isTableStructureNode(&node))

- unrendered.append(&node);

- }

- for (auto& node : unrendered)

- removeNode(node);

-void ReplacementFragment::removeInterchangeNodes(ContainerNode* 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 (isInterchangeHTMLBRElement(node)) {

- m_hasInterchangeNewlineAtStart = true;

- removeNode(node);

- break;

- }

- node = node->firstChild();

- }

- if (!container->hasChildren())

- 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 (isInterchangeHTMLBRElement(node)) {

- m_hasInterchangeNewlineAtEnd = true;

- removeNode(node);

- break;

- }

- node = node->lastChild();

- }

- node = container->firstChild();

- while (node) {

- RefPtrWillBeRawPtr<Node> next = NodeTraversal::next(*node);

- if (isHTMLInterchangeConvertedSpaceSpan(node)) {

- HTMLElement& element = toHTMLElement(*node);

- next = NodeTraversal::nextSkippingChildren(element);

- removeNodePreservingChildren(&element);

- }

- node = next.get();

- }

-inline void ReplaceSelectionCommand::InsertedNodes::respondToNodeInsertion(Node& node)

- if (!m_firstNodeInserted)

- m_firstNodeInserted = &node;

- m_lastNodeInserted = &node;

-inline void ReplaceSelectionCommand::InsertedNodes::willRemoveNodePreservingChildren(Node& node)

- if (m_firstNodeInserted.get() == node)

- m_firstNodeInserted = NodeTraversal::next(node);

- if (m_lastNodeInserted.get() == node)

- m_lastNodeInserted = node.lastChild() ? node.lastChild() : NodeTraversal::nextSkippingChildren(node);

-inline void ReplaceSelectionCommand::InsertedNodes::willRemoveNode(Node& node)

- if (m_firstNodeInserted.get() == node && m_lastNodeInserted.get() == node) {

- m_firstNodeInserted = nullptr;

- m_lastNodeInserted = nullptr;

- } else if (m_firstNodeInserted.get() == node) {

- m_firstNodeInserted = NodeTraversal::nextSkippingChildren(*m_firstNodeInserted);

- } else if (m_lastNodeInserted.get() == node) {

- m_lastNodeInserted = NodeTraversal::previousSkippingChildren(*m_lastNodeInserted);

- }

-inline void ReplaceSelectionCommand::InsertedNodes::didReplaceNode(Node& node, Node& newNode)

- if (m_firstNodeInserted.get() == node)

- m_firstNodeInserted = &newNode;

- if (m_lastNodeInserted.get() == node)

- m_lastNodeInserted = &newNode;

-ReplaceSelectionCommand::ReplaceSelectionCommand(Document& document, PassRefPtrWillBeRawPtr<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, isMailHTMLBlockquoteElement, 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)

- && !isHTMLBRElement(*startOfInsertedContent.deepEquivalent().anchorNode())

- && 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)

- && !isHTMLBRElement(*endOfInsertedContent.deepEquivalent().anchorNode())

- && shouldMerge(endOfInsertedContent, next);

-static bool isMailPasteAsQuotationHTMLBlockQuoteElement(const Node* node)

- if (!node || !node->isHTMLElement())

- return false;

- const HTMLElement& element = toHTMLElement(*node);

- if (!element.hasTagName(blockquoteTag) || element.getAttribute(classAttr) != ApplePasteAsQuotation)

- return false;

- UseCounter::count(node->document(), UseCounter::EditingApplePasteAsQuotation);

- return true;

-static bool isHTMLHeaderElement(const Node* a)

- if (!a || !a->isHTMLElement())

- return false;

- const HTMLElement& element = toHTMLElement(*a);

- return element.hasTagName(h1Tag)

- || element.hasTagName(h2Tag)

- || element.hasTagName(h3Tag)

- || element.hasTagName(h4Tag)

- || element.hasTagName(h5Tag)

- || element.hasTagName(h6Tag);

-static bool haveSameTagName(Element* a, Element* b)

- return a && b && a->tagName() == b->tagName();

-bool ReplaceSelectionCommand::shouldMerge(const VisiblePosition& source, const VisiblePosition& destination)

- if (source.isNull() || destination.isNull())

- return false;

- Node* sourceNode = source.deepEquivalent().anchorNode();

- Node* destinationNode = destination.deepEquivalent().anchorNode();

- Element* sourceBlock = enclosingBlock(sourceNode);

- Element* destinationBlock = enclosingBlock(destinationNode);

- return !enclosingNodeOfType(source.deepEquivalent(), &isMailPasteAsQuotationHTMLBlockQuoteElement)

- && sourceBlock && (!sourceBlock->hasTagName(blockquoteTag) || isMailHTMLBlockquoteElement(sourceBlock))

- && enclosingListChild(sourceBlock) == enclosingListChild(destinationNode)

- && enclosingTableCell(source.deepEquivalent()) == enclosingTableCell(destination.deepEquivalent())

- && (!isHTMLHeaderElement(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)

- RefPtrWillBeRawPtr<Node> pastEndNode = insertedNodes.pastLastLeaf();

- RefPtrWillBeRawPtr<Node> next = nullptr;

- for (RefPtrWillBeRawPtr<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 (!node->isStyledElement())

- continue;

- Element* element = toElement(node);

- const StylePropertySet* inlineStyle = element->inlineStyle();

- RefPtrWillBeRawPtr<EditingStyle> newInlineStyle = EditingStyle::create(inlineStyle);

- if (inlineStyle) {

- if (element->isHTMLElement()) {

- Vector<QualifiedName> attributes;

- HTMLElement* htmlElement = toHTMLElement(element);

- ASSERT(htmlElement);

- if (newInlineStyle->conflictsWithImplicitStyleOfElement(htmlElement)) {

- // e.g. <b style="font-weight: normal;"> is converted to <span style="font-weight: normal;">

- element = replaceElementWithSpanPreservingChildrenAndAttributes(htmlElement);

- inlineStyle = element->inlineStyle();

- insertedNodes.didReplaceNode(*htmlElement, *element);

- } 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++)

- removeElementAttribute(htmlElement, 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>.

- HTMLQuoteElement* blockquoteElement = !context || isMailPasteAsQuotationHTMLBlockQuoteElement(context) ?

- toHTMLQuoteElement(context) :

- toHTMLQuoteElement(enclosingNodeOfType(firstPositionInNode(context), isMailHTMLBlockquoteElement, CanCrossEditingBoundary));

- if (blockquoteElement)

- 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;

- }

- removeElementAttribute(element, styleAttr);

- } else if (newInlineStyle->style()->propertyCount() != inlineStyle->propertyCount()) {

- setNodeAttribute(element, styleAttr, AtomicString(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())).deepEquivalent() == VisiblePosition(firstPositionInNode(element)).deepEquivalent()

- && VisiblePosition(lastPositionInNode(element->parentNode())).deepEquivalent() == VisiblePosition(lastPositionInNode(element)).deepEquivalent()) {

- insertedNodes.willRemoveNodePreservingChildren(*element);

- removeNodePreservingChildren(element);

- continue;

- }

- if (element->parentNode() && element->parentNode()->layoutObjectIsRichlyEditable())

- removeElementAttribute(element, contenteditableAttr);

- // WebKit used to not add display: inline and float: none on copy.

- // Keep this code around for backward compatibility

- if (isLegacyAppleHTMLSpanElement(element)) {

- if (!element->hasChildren()) {

- 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->layoutObject() && element->layoutObject()->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(const InsertedNodes& insertedNodes)

- RefPtrWillBeRawPtr<Node> pastEndNode = insertedNodes.pastLastLeaf();

- RefPtrWillBeRawPtr<Node> next = nullptr;

- for (RefPtrWillBeRawPtr<Node> node = insertedNodes.firstNodeInserted(); node && node != pastEndNode; node = next) {

- next = NodeTraversal::next(*node);

- if (!node->isHTMLElement())

- continue;

- HTMLElement& element = toHTMLElement(*node);

- if (isProhibitedParagraphChild(element.localName())) {

- if (HTMLElement* paragraphElement = toHTMLElement(enclosingElementWithTag(positionInParentBeforeNode(element), pTag)))

- moveElementOutOfAncestor(&element, paragraphElement);

- }

- if (isHTMLHeaderElement(&element)) {

- if (HTMLElement* headerElement = toHTMLElement(highestEnclosingNodeOfType(positionInParentBeforeNode(element), isHTMLHeaderElement)))

- moveElementOutOfAncestor(&element, headerElement);

- }

-void ReplaceSelectionCommand::moveElementOutOfAncestor(PassRefPtrWillBeRawPtr<Element> prpElement, PassRefPtrWillBeRawPtr<ContainerNode> prpAncestor)

- RefPtrWillBeRawPtr<Element> element = prpElement;

- RefPtrWillBeRawPtr<ContainerNode> ancestor = prpAncestor;

- if (!ancestor->parentNode()->hasEditableStyle())

- return;

- VisiblePosition positionAtEndOfNode(lastPositionInOrAfterNode(element.get()));

- VisiblePosition lastPositionInParagraph(lastPositionInNode(ancestor.get()));

- if (positionAtEndOfNode.deepEquivalent() == lastPositionInParagraph.deepEquivalent()) {

- removeNode(element);

- if (ancestor->nextSibling())

- insertNodeBefore(element, ancestor->nextSibling());

- else

- appendNode(element, ancestor->parentNode());

- } else {

- RefPtrWillBeRawPtr<Node> nodeToSplitTo = splitTreeToNode(element.get(), ancestor.get(), true);

- removeNode(element);

- insertNodeBefore(element, nodeToSplitTo);

- }

- if (!ancestor->hasChildren())

- removeNode(ancestor.release());

-static inline bool nodeHasVisibleLayoutText(Text& text)

- return text.layoutObject() && text.layoutObject()->resolvedTextLength() > 0;

-void ReplaceSelectionCommand::removeUnrenderedTextNodesAtEnds(InsertedNodes& insertedNodes)

- document().updateLayoutIgnorePendingStylesheets();

- Node* lastLeafInserted = insertedNodes.lastLeafInserted();

- if (lastLeafInserted && lastLeafInserted->isTextNode() && !nodeHasVisibleLayoutText(toText(*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 (firstNodeInserted && firstNodeInserted->isTextNode() && !nodeHasVisibleLayoutText(toText(*firstNodeInserted))) {

- insertedNodes.willRemoveNode(*firstNodeInserted);

- removeNode(firstNodeInserted);

- }

-VisiblePosition ReplaceSelectionCommand::positionAtEndOfInsertedContent() const

- // FIXME: Why is this hack here? What's special about <select> tags?

- HTMLSelectElement* enclosingSelect = toHTMLSelectElement(enclosingElementWithTag(m_endOfInsertedContent, selectTag));

- return VisiblePosition(enclosingSelect ? lastPositionInOrAfterNode(enclosingSelect) : m_endOfInsertedContent);

-VisiblePosition ReplaceSelectionCommand::positionAtStartOfInsertedContent() const

- return VisiblePosition(m_startOfInsertedContent);

-static void removeHeadContents(ReplacementFragment& fragment)

- Node* next = nullptr;

- for (Node* node = fragment.firstChild(); node; node = next) {

- if (isHTMLBaseElement(*node)

- || isHTMLLinkElement(*node)

- || isHTMLMetaElement(*node)

- || isHTMLStyleElement(*node)

- || 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 (isMailPasteAsQuotationHTMLBlockQuoteElement(topNode) || enclosingNodeOfType(firstPositionInOrBeforeNode(topNode), isMailHTMLBlockquoteElement, 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 (!isLegacyAppleHTMLSpanElement(topNode))

- return false;

- HTMLSpanElement* wrappingStyleSpan = toHTMLSpanElement(topNode);

- RefPtrWillBeRawPtr<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 != 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)

- HTMLSpanElement* 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 : NodeTraversal::startsAt(insertedNodes.firstNodeInserted())) {

- if (isLegacyAppleHTMLSpanElement(&node)) {

- wrappingStyleSpan = toHTMLSpanElement(&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;

- RefPtrWillBeRawPtr<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 blockquoteElement are allowed to override those from the source document, see <rdar://problem/4930986> and <rdar://problem/5089327>.

- HTMLQuoteElement* blockquoteElement = isMailPasteAsQuotationHTMLBlockQuoteElement(context) ?

- toHTMLQuoteElement(context) :

- toHTMLQuoteElement(enclosingNodeOfType(firstPositionInNode(context), isMailHTMLBlockquoteElement, CanCrossEditingBoundary));

- if (blockquoteElement)

- 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->hasChildren()) {

- insertedNodes.willRemoveNodePreservingChildren(*wrappingStyleSpan);

- removeNodePreservingChildren(wrappingStyleSpan);

- } else {

- setNodeAttribute(wrappingStyleSpan, styleAttr, AtomicString(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).deepEquivalent() == destination.deepEquivalent()) {

- RefPtrWillBeRawPtr<HTMLBRElement> placeholder = createBreakElement(document());

- insertNodeBefore(placeholder, startOfParagraphToMove.deepEquivalent().anchorNode());

- 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 (isBlockFlowElement(*parent) || isHTMLBodyElement(*parent))

- 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 isInlineHTMLElementWithStyle(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 = toHTMLElement(node);

- const AtomicString& classAttributeValue = element->getAttribute(classAttr);

- if (classAttributeValue == AppleTabSpanClass) {

- UseCounter::count(element->document(), UseCounter::EditingAppleTabSpanClass);

- return true;

- }

- if (classAttributeValue == AppleConvertedSpace) {

- UseCounter::count(element->document(), UseCounter::EditingAppleConvertedSpace);

- return true;

- }

- if (classAttributeValue == ApplePasteAsQuotation) {

- UseCounter::count(element->document(), UseCounter::EditingApplePasteAsQuotation);

- return true;

- }

- return EditingStyle::elementIsStyledSpanOrHTMLEquivalent(element);

-static inline HTMLElement* elementToSplitToAvoidPastingIntoInlineElementsWithStyle(const Position& insertionPos)

- Element* containingBlock = enclosingBlock(insertionPos.computeContainerNode());

- return toHTMLElement(highestEnclosingNodeOfType(insertionPos, isInlineHTMLElementWithStyle, CannotCrossEditingBoundary, containingBlock));

-void ReplaceSelectionCommand::doApply()

- VisibleSelection selection = endingSelection();

- ASSERT(selection.isCaretOrRange());

- ASSERT(selection.start().anchorNode());

- if (!selection.isNonOrphanedCaretOrRange() || !selection.start().anchorNode())

- 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().anchorNode()->layoutObject() && selection.start().anchorNode()->layoutObject()->style()->userModify() == READ_WRITE_PLAINTEXT_ONLY)

- && (selection.end().anchorNode()->layoutObject() && selection.end().anchorNode()->layoutObject()->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);

- Element* enclosingBlockOfVisibleStart = enclosingBlock(visibleStart.deepEquivalent().anchorNode());

- Position insertionPos = selection.start();

- bool startIsInsideMailBlockquote = enclosingNodeOfType(insertionPos, isMailHTMLBlockquoteElement, CanCrossEditingBoundary);

- bool selectionIsPlainText = !selection.isContentRichlyEditable();

- Element* currentRoot = selection.rootEditableElement();

- if ((selectionStartWasStartOfParagraph && selectionEndWasEndOfParagraph && !startIsInsideMailBlockquote)

- || enclosingBlockOfVisibleStart == currentRoot

- || isListItem(enclosingBlockOfVisibleStart)

- || 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, 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().anchorNode();

- ASSERT(isHTMLBRElement(br));

- // 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().anchorNode())

- 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]).

- HTMLBRElement* endBR = isHTMLBRElement(*insertionPos.downstream().anchorNode()) ? toHTMLBRElement(insertionPos.downstream().anchorNode()) : 0;

- VisiblePosition originalVisPosBeforeEndBR;

- if (endBR)

- originalVisPosBeforeEndBR = VisiblePosition(positionBeforeNode(endBR), DOWNSTREAM).previous();

- RefPtrWillBeRawPtr<Element> enclosingBlockOfInsertionPos = enclosingBlock(insertionPos.anchorNode());

- // Adjust insertionPos to prevent nesting.

- // If the start was in a Mail blockquote, we will have already handled adjusting insertionPos above.

- if (m_preventNesting && enclosingBlockOfInsertionPos && !isTableCell(enclosingBlockOfInsertionPos.get()) && !startIsInsideMailBlockquote) {

- ASSERT(enclosingBlockOfInsertionPos != currentRoot);

- VisiblePosition visibleInsertionPos(insertionPos);

- if (isEndOfBlock(visibleInsertionPos) && !(isStartOfBlock(visibleInsertionPos) && fragment.hasInterchangeNewlineAtEnd()))

- insertionPos = positionInParentAfterNode(*enclosingBlockOfInsertionPos);

- else if (isStartOfBlock(visibleInsertionPos))

- insertionPos = positionInParentBeforeNode(*enclosingBlockOfInsertionPos);

- }

- // 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 (LocalFrame* 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.computeContainerNode())) {

- if (insertionPos.computeContainerNode()->isTextNode() && insertionPos.offsetInContainerNode() && !insertionPos.atLastEditingPositionForNode()) {

- splitTextNode(toText(insertionPos.computeContainerNode()), insertionPos.offsetInContainerNode());

- insertionPos = firstPositionInNode(insertionPos.computeContainerNode());

- }

- if (RefPtrWillBeRawPtr<HTMLElement> elementToSplitTo = elementToSplitToAvoidPastingIntoInlineElementsWithStyle(insertionPos)) {

- if (insertionPos.computeContainerNode() != elementToSplitTo->parentNode()) {

- Node* splitStart = insertionPos.computeNodeAfterPosition();

- if (!splitStart)

- splitStart = insertionPos.computeContainerNode();

- RefPtrWillBeRawPtr<Node> nodeToSplitTo = splitTreeToNode(splitStart, elementToSplitTo->parentNode()).get();

- insertionPos = positionInParentBeforeNode(*nodeToSplitTo);

- }

- // 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;

- RefPtrWillBeRawPtr<Node> refNode = fragment.firstChild();

- ASSERT(refNode);

- RefPtrWillBeRawPtr<Node> node = refNode->nextSibling();

- fragment.removeNode(refNode);

- Element* blockStart = enclosingBlock(insertionPos.anchorNode());

- if ((isHTMLListElement(refNode.get()) || (isLegacyAppleHTMLSpanElement(refNode.get()) && isHTMLListElement(refNode->firstChild())))

- && blockStart && blockStart->layoutObject()->isListItem()) {

- refNode = insertAsListItems(toHTMLElement(refNode), blockStart, insertionPos, insertedNodes);

- } else {

- insertNodeAt(refNode, insertionPos);

- insertedNodes.respondToNodeInsertion(*refNode);

- }

- // Mutation events (bug 22634) may have already removed the inserted content

- if (!refNode->inDocument())

- return;

- bool plainTextFragment = isPlainTextMarkup(refNode.get());

- while (node) {

- RefPtrWillBeRawPtr<Node> next = node->nextSibling();

- fragment.removeNode(node.get());

- insertNodeAfter(node, refNode);

- insertedNodes.respondToNodeInsertion(*node);

- // 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;

- // Scripts specified in javascript protocol may remove |enclosingBlockOfInsertionPos|

- // during insertion, e.g. <iframe src="javascript:...">

- if (enclosingBlockOfInsertionPos && !enclosingBlockOfInsertionPos->inDocument())

- enclosingBlockOfInsertionPos = nullptr;

- VisiblePosition startOfInsertedContent(firstPositionInOrBeforeNode(insertedNodes.firstNodeInserted()));

- // We inserted before the enclosingBlockOfInsertionPos to prevent nesting, and the content before the enclosingBlockOfInsertionPos 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() && enclosingBlockOfInsertionPos && insertionPos.anchorNode() == enclosingBlockOfInsertionPos->parentNode() && (unsigned)insertionPos.computeEditingOffset() < enclosingBlockOfInsertionPos->nodeIndex() && !isStartOfParagraph(startOfInsertedContent))

- insertNodeAt(createBreakElement(document()).get(), startOfInsertedContent.deepEquivalent());

- if (endBR && (plainTextFragment || (shouldRemoveEndBR(endBR, originalVisPosBeforeEndBR) && !(fragment.hasInterchangeNewlineAtEnd() && selectionIsPlainText)))) {

- RefPtrWillBeRawPtr<ContainerNode> 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().anchorNode();

- 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).deepEquivalent() == startOfParagraphToMove.deepEquivalent()) {

- 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().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);

- Element* enclosingBlockElement = enclosingBlock(endOfInsertedContent.deepEquivalent().anchorNode());

- if (isListItem(enclosingBlockElement)) {

- RefPtrWillBeRawPtr<HTMLLIElement> newListItem = createListItemElement(document());

- insertNodeAfter(newListItem, enclosingBlockElement);

- 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(),

- isMailHTMLBlockquoteElement, CannotCrossEditingBoundary, insertedNodes.firstNodeInserted()->parentNode()));

- }

- // Select up to the paragraph separator that was added.

- lastPositionToSelect = endingSelection().visibleStart().deepEquivalent();

- updateNodesInserted(lastPositionToSelect.anchorNode());

- }

- } else {

- // Select up to the beginning of the next paragraph.

- lastPositionToSelect = next.deepEquivalent().downstream();

- }

- } else {

- mergeEndIfNeeded();

- }

- if (HTMLQuoteElement* mailBlockquote = toHTMLQuoteElement(enclosingNodeOfType(positionAtStartOfInsertedContent().deepEquivalent(), isMailPasteAsQuotationHTMLBlockQuoteElement)))

- removeElementAttribute(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(HTMLBRElement* 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().deepEquivalent() == originalVisPosBeforeEndBR.deepEquivalent())

- 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;

- HTMLTextFormControlElement* textControl = enclosingTextFormControl(positionAtStartOfInsertedContent().deepEquivalent());

- if (isHTMLInputElement(textControl) && toHTMLInputElement(textControl)->type() == InputTypeNames::password)

- return false; // Disable smart replace for password fields.

- return true;

-static bool isCharacterSmartReplaceExemptConsideringNonBreakingSpace(UChar32 character, bool previousCharacter)

- return isCharacterSmartReplaceExempt(character == noBreakSpaceCharacter ? ' ' : 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.isOffsetInAnchor()) {

- endNode = endUpstream.computeContainerNode();

- endOffset = endUpstream.offsetInContainerNode();

- }

- bool needsTrailingSpace = !isEndOfParagraph(endOfInsertedContent) && !isCharacterSmartReplaceExemptConsideringNonBreakingSpace(endOfInsertedContent.characterAfter(), false);

- if (needsTrailingSpace && endNode) {

- bool collapseWhiteSpace = !endNode->layoutObject() || endNode->layoutObject()->style()->collapseWhiteSpace();

- if (endNode->isTextNode()) {

- insertTextIntoNode(toText(endNode), endOffset, collapseWhiteSpace ? nonBreakingSpaceString() : " ");

- if (m_endOfInsertedContent.computeContainerNode() == endNode)

- m_endOfInsertedContent = Position(endNode, m_endOfInsertedContent.offsetInContainerNode() + 1);

- } else {

- RefPtrWillBeRawPtr<Text> 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.isOffsetInAnchor()) {

- startNode = startDownstream.computeContainerNode();

- startOffset = startDownstream.offsetInContainerNode();

- }

- bool needsLeadingSpace = !isStartOfParagraph(startOfInsertedContent) && !isCharacterSmartReplaceExemptConsideringNonBreakingSpace(startOfInsertedContent.previous().characterAfter(), true);

- if (needsLeadingSpace && startNode) {

- bool collapseWhiteSpace = !startNode->layoutObject() || startNode->layoutObject()->style()->collapseWhiteSpace();

- if (startNode->isTextNode()) {

- insertTextIntoNode(toText(startNode), startOffset, collapseWhiteSpace ? nonBreakingSpaceString() : " ");

- if (m_endOfInsertedContent.computeContainerNode() == startNode && m_endOfInsertedContent.offsetInContainerNode())

- m_endOfInsertedContent = Position(startNode, m_endOfInsertedContent.offsetInContainerNode() + 1);

- } else {

- RefPtrWillBeRawPtr<Text> 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.isOffsetInAnchor();

- bool positionOnlyToBeUpdatedIsOffsetInAnchor = positionOnlyToBeUpdated.isOffsetInAnchor();

- RefPtrWillBeRawPtr<Text> text = nullptr;

- if (positionIsOffsetInAnchor && position.computeContainerNode() && position.computeContainerNode()->isTextNode()) {

- text = toText(position.computeContainerNode());

- } 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()) {

- RefPtrWillBeRawPtr<Text> previous = toText(text->previousSibling());

- insertTextIntoNode(text, 0, previous->data());

- if (positionIsOffsetInAnchor)

- position = Position(position.computeContainerNode(), previous->length() + position.offsetInContainerNode());

- else

- updatePositionForNodeRemoval(position, *previous);

- if (positionOnlyToBeUpdatedIsOffsetInAnchor) {

- if (positionOnlyToBeUpdated.computeContainerNode() == text)

- positionOnlyToBeUpdated = Position(text, previous->length() + positionOnlyToBeUpdated.offsetInContainerNode());

- else if (positionOnlyToBeUpdated.computeContainerNode() == previous)

- positionOnlyToBeUpdated = Position(text, positionOnlyToBeUpdated.offsetInContainerNode());

- } else {

- updatePositionForNodeRemoval(positionOnlyToBeUpdated, *previous);

- }

- removeNode(previous);

- }

- if (text->nextSibling() && text->nextSibling()->isTextNode()) {

- RefPtrWillBeRawPtr<Text> next = toText(text->nextSibling());

- unsigned originalLength = text->length();

- insertTextIntoNode(text, originalLength, next->data());

- if (!positionIsOffsetInAnchor)

- updatePositionForNodeRemoval(position, *next);

- if (positionOnlyToBeUpdatedIsOffsetInAnchor && positionOnlyToBeUpdated.computeContainerNode() == next)

- positionOnlyToBeUpdated = Position(text, originalLength + positionOnlyToBeUpdated.offsetInContainerNode());

- else

- updatePositionForNodeRemoval(positionOnlyToBeUpdated, *next);

- 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(PassRefPtrWillBeRawPtr<HTMLElement> prpListElement, Element* insertionBlock, const Position& insertPos, InsertedNodes& insertedNodes)

- RefPtrWillBeRawPtr<HTMLElement> listElement = prpListElement;

- while (listElement->hasOneChild() && isHTMLListElement(listElement->firstChild()))

- listElement = toHTMLElement(listElement->firstChild());

- bool isStart = isStartOfParagraph(VisiblePosition(insertPos));

- bool isEnd = isEndOfParagraph(VisiblePosition(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.anchorNode()->isTextNode() && textNodeOffset > 0)

- splitTextNode(toText(insertPos.anchorNode()), textNodeOffset);

- splitTreeToNode(insertPos.anchorNode(), lastNode, true);

- }

- while (RefPtrWillBeRawPtr<Node> listItem = listElement->firstChild()) {

- listElement->removeChild(listItem.get(), ASSERT_NO_EXCEPTION);

- if (isStart || isMiddle) {

- insertNodeBefore(listItem, lastNode);

- insertedNodes.respondToNodeInsertion(*listItem);

- } else if (isEnd) {

- insertNodeAfter(listItem, lastNode);

- insertedNodes.respondToNodeInsertion(*listItem);

- lastNode = listItem.get();

- } else {

- ASSERT_NOT_REACHED();

- }

- if (isStart || isMiddle) {

- if (Node* node = lastNode->previousSibling())

- return node;

- }

- return lastNode;

-void ReplaceSelectionCommand::updateNodesInserted(Node *node)

- if (!node)

- return;

- if (m_startOfInsertedContent.isNull())

- m_startOfInsertedContent = firstPositionInOrBeforeNode(node);

- m_endOfInsertedContent = lastPositionInOrAfterNode(&NodeTraversal::lastWithinOrSelf(*node));

-// 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 (elementToSplitToAvoidPastingIntoInlineElementsWithStyle(endingSelection().start()))

- return false;

- RefPtrWillBeRawPtr<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() && isHTMLBRElement(*nodeAfterInsertionPos)

- && shouldRemoveEndBR(toHTMLBRElement(nodeAfterInsertionPos.get()), VisiblePosition(positionBeforeNode(nodeAfterInsertionPos.get()))))

- removeNodeAndPruneAncestors(nodeAfterInsertionPos.get());

- VisibleSelection selectionAfterReplace(m_selectReplacement ? start : end, end);

- setEndingSelection(selectionAfterReplace);

- return true;

-DEFINE_TRACE(ReplaceSelectionCommand)

- visitor->trace(m_startOfInsertedContent);

- visitor->trace(m_endOfInsertedContent);

- visitor->trace(m_insertionStyle);

- visitor->trace(m_documentFragment);

- CompositeEditCommand::trace(visitor);

-} // namespace blink

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