| /* |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights |
| * reserved. |
| * Copyright (C) 2008, 2009, 2010, 2011 Google Inc. All rights reserved. |
| * Copyright (C) 2011 Igalia S.L. |
| * Copyright (C) 2011 Motorola Mobility. 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 "core/editing/serializers/Serialization.h" |
| |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "core/CSSValueKeywords.h" |
| #include "core/HTMLNames.h" |
| #include "core/css/CSSIdentifierValue.h" |
| #include "core/css/CSSValue.h" |
| #include "core/css/StylePropertySet.h" |
| #include "core/dom/CDATASection.h" |
| #include "core/dom/ChildListMutationScope.h" |
| #include "core/dom/Comment.h" |
| #include "core/dom/ContextFeatures.h" |
| #include "core/dom/DocumentFragment.h" |
| #include "core/dom/ElementTraversal.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/dom/NodeTraversal.h" |
| #include "core/dom/Range.h" |
| #include "core/editing/EditingStrategy.h" |
| #include "core/editing/EditingUtilities.h" |
| #include "core/editing/Editor.h" |
| #include "core/editing/VisibleSelection.h" |
| #include "core/editing/VisibleUnits.h" |
| #include "core/editing/serializers/MarkupAccumulator.h" |
| #include "core/editing/serializers/StyledMarkupSerializer.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/html/HTMLAnchorElement.h" |
| #include "core/html/HTMLBRElement.h" |
| #include "core/html/HTMLBodyElement.h" |
| #include "core/html/HTMLDivElement.h" |
| #include "core/html/HTMLElement.h" |
| #include "core/html/HTMLQuoteElement.h" |
| #include "core/html/HTMLSpanElement.h" |
| #include "core/html/HTMLTableCellElement.h" |
| #include "core/html/HTMLTableElement.h" |
| #include "core/html/HTMLTextFormControlElement.h" |
| #include "core/layout/LayoutObject.h" |
| #include "platform/weborigin/KURL.h" |
| #include "wtf/StdLibExtras.h" |
| #include "wtf/text/StringBuilder.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| class AttributeChange { |
| DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); |
| |
| public: |
| AttributeChange() : m_name(nullAtom, nullAtom, nullAtom) {} |
| |
| AttributeChange(Element* element, |
| const QualifiedName& name, |
| const String& value) |
| : m_element(element), m_name(name), m_value(value) {} |
| |
| void apply() { m_element->setAttribute(m_name, AtomicString(m_value)); } |
| |
| DEFINE_INLINE_TRACE() { visitor->trace(m_element); } |
| |
| private: |
| Member<Element> m_element; |
| QualifiedName m_name; |
| String m_value; |
| }; |
| |
| } // namespace blink |
| |
| WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::AttributeChange); |
| |
| namespace blink { |
| |
| static void completeURLs(DocumentFragment& fragment, const String& baseURL) { |
| HeapVector<AttributeChange> changes; |
| |
| KURL parsedBaseURL(ParsedURLString, baseURL); |
| |
| for (Element& element : ElementTraversal::descendantsOf(fragment)) { |
| AttributeCollection attributes = element.attributes(); |
| // AttributeCollection::iterator end = attributes.end(); |
| for (const auto& attribute : attributes) { |
| if (element.isURLAttribute(attribute) && !attribute.value().isEmpty()) |
| changes.append(AttributeChange( |
| &element, attribute.name(), |
| KURL(parsedBaseURL, attribute.value()).getString())); |
| } |
| } |
| |
| for (auto& change : changes) |
| change.apply(); |
| } |
| |
| static bool isHTMLBlockElement(const Node* node) { |
| DCHECK(node); |
| return isHTMLTableCellElement(*node) || isNonTableCellHTMLBlockElement(node); |
| } |
| |
| static HTMLElement* ancestorToRetainStructureAndAppearanceForBlock( |
| Element* commonAncestorBlock) { |
| if (!commonAncestorBlock) |
| return 0; |
| |
| if (commonAncestorBlock->hasTagName(tbodyTag) || |
| isHTMLTableRowElement(*commonAncestorBlock)) |
| return Traversal<HTMLTableElement>::firstAncestor(*commonAncestorBlock); |
| |
| if (isNonTableCellHTMLBlockElement(commonAncestorBlock)) |
| return toHTMLElement(commonAncestorBlock); |
| |
| return 0; |
| } |
| |
| static inline HTMLElement* ancestorToRetainStructureAndAppearance( |
| Node* commonAncestor) { |
| return ancestorToRetainStructureAndAppearanceForBlock( |
| enclosingBlock(commonAncestor)); |
| } |
| |
| static inline HTMLElement* |
| ancestorToRetainStructureAndAppearanceWithNoLayoutObject(Node* commonAncestor) { |
| HTMLElement* commonAncestorBlock = toHTMLElement(enclosingNodeOfType( |
| firstPositionInOrBeforeNode(commonAncestor), isHTMLBlockElement)); |
| return ancestorToRetainStructureAndAppearanceForBlock(commonAncestorBlock); |
| } |
| |
| bool propertyMissingOrEqualToNone(StylePropertySet* style, |
| CSSPropertyID propertyID) { |
| if (!style) |
| return false; |
| const CSSValue* value = style->getPropertyCSSValue(propertyID); |
| if (!value) |
| return true; |
| if (!value->isIdentifierValue()) |
| return false; |
| return toCSSIdentifierValue(value)->getValueID() == CSSValueNone; |
| } |
| |
| template <typename Strategy> |
| static HTMLElement* highestAncestorToWrapMarkup( |
| const PositionTemplate<Strategy>& startPosition, |
| const PositionTemplate<Strategy>& endPosition, |
| EAnnotateForInterchange shouldAnnotate, |
| Node* constrainingAncestor) { |
| Node* firstNode = startPosition.nodeAsRangeFirstNode(); |
| // For compatibility reason, we use container node of start and end |
| // positions rather than first node and last node in selection. |
| Node* commonAncestor = |
| Strategy::commonAncestor(*startPosition.computeContainerNode(), |
| *endPosition.computeContainerNode()); |
| DCHECK(commonAncestor); |
| HTMLElement* specialCommonAncestor = nullptr; |
| if (shouldAnnotate == AnnotateForInterchange) { |
| // Include ancestors that aren't completely inside the range but are |
| // required to retain the structure and appearance of the copied markup. |
| specialCommonAncestor = |
| ancestorToRetainStructureAndAppearance(commonAncestor); |
| if (Node* parentListNode = enclosingNodeOfType( |
| firstPositionInOrBeforeNode(firstNode), isListItem)) { |
| EphemeralRangeTemplate<Strategy> markupRange = |
| EphemeralRangeTemplate<Strategy>(startPosition, endPosition); |
| EphemeralRangeTemplate<Strategy> nodeRange = normalizeRange( |
| EphemeralRangeTemplate<Strategy>::rangeOfContents(*parentListNode)); |
| if (nodeRange == markupRange) { |
| ContainerNode* ancestor = parentListNode->parentNode(); |
| while (ancestor && !isHTMLListElement(ancestor)) |
| ancestor = ancestor->parentNode(); |
| specialCommonAncestor = toHTMLElement(ancestor); |
| } |
| } |
| |
| // Retain the Mail quote level by including all ancestor mail block quotes. |
| if (HTMLQuoteElement* highestMailBlockquote = |
| toHTMLQuoteElement(highestEnclosingNodeOfType( |
| firstPositionInOrBeforeNode(firstNode), |
| isMailHTMLBlockquoteElement, CanCrossEditingBoundary))) |
| specialCommonAncestor = highestMailBlockquote; |
| } |
| |
| Node* checkAncestor = |
| specialCommonAncestor ? specialCommonAncestor : commonAncestor; |
| if (checkAncestor->layoutObject()) { |
| HTMLElement* newSpecialCommonAncestor = |
| toHTMLElement(highestEnclosingNodeOfType( |
| Position::firstPositionInNode(checkAncestor), |
| &isPresentationalHTMLElement, CanCrossEditingBoundary, |
| constrainingAncestor)); |
| if (newSpecialCommonAncestor) |
| specialCommonAncestor = newSpecialCommonAncestor; |
| } |
| |
| // If a single tab is selected, commonAncestor will be a text node inside a |
| // tab span. If two or more tabs are selected, commonAncestor will be the tab |
| // span. In either case, if there is a specialCommonAncestor already, it will |
| // necessarily be above any tab span that needs to be included. |
| if (!specialCommonAncestor && isTabHTMLSpanElementTextNode(commonAncestor)) |
| specialCommonAncestor = |
| toHTMLSpanElement(Strategy::parent(*commonAncestor)); |
| if (!specialCommonAncestor && isTabHTMLSpanElement(commonAncestor)) |
| specialCommonAncestor = toHTMLSpanElement(commonAncestor); |
| |
| if (HTMLAnchorElement* enclosingAnchor = |
| toHTMLAnchorElement(enclosingElementWithTag( |
| Position::firstPositionInNode(specialCommonAncestor |
| ? specialCommonAncestor |
| : commonAncestor), |
| aTag))) |
| specialCommonAncestor = enclosingAnchor; |
| |
| return specialCommonAncestor; |
| } |
| |
| template <typename Strategy> |
| class CreateMarkupAlgorithm { |
| public: |
| static String createMarkup( |
| const PositionTemplate<Strategy>& startPosition, |
| const PositionTemplate<Strategy>& endPosition, |
| EAnnotateForInterchange shouldAnnotate = DoNotAnnotateForInterchange, |
| ConvertBlocksToInlines = ConvertBlocksToInlines::NotConvert, |
| EAbsoluteURLs shouldResolveURLs = DoNotResolveURLs, |
| Node* constrainingAncestor = nullptr); |
| }; |
| |
| // FIXME: Shouldn't we omit style info when annotate == |
| // DoNotAnnotateForInterchange? |
| // FIXME: At least, annotation and style info should probably not be included in |
| // range.markupString() |
| template <typename Strategy> |
| String CreateMarkupAlgorithm<Strategy>::createMarkup( |
| const PositionTemplate<Strategy>& startPosition, |
| const PositionTemplate<Strategy>& endPosition, |
| EAnnotateForInterchange shouldAnnotate, |
| ConvertBlocksToInlines convertBlocksToInlines, |
| EAbsoluteURLs shouldResolveURLs, |
| Node* constrainingAncestor) { |
| if (startPosition.isNull() || endPosition.isNull()) |
| return emptyString(); |
| |
| RELEASE_ASSERT(startPosition.compareTo(endPosition) <= 0); |
| |
| bool collapsed = startPosition == endPosition; |
| if (collapsed) |
| return emptyString(); |
| Node* commonAncestor = |
| Strategy::commonAncestor(*startPosition.computeContainerNode(), |
| *endPosition.computeContainerNode()); |
| if (!commonAncestor) |
| return emptyString(); |
| |
| Document* document = startPosition.document(); |
| document->updateStyleAndLayoutIgnorePendingStylesheets(); |
| |
| HTMLElement* specialCommonAncestor = highestAncestorToWrapMarkup<Strategy>( |
| startPosition, endPosition, shouldAnnotate, constrainingAncestor); |
| StyledMarkupSerializer<Strategy> serializer( |
| shouldResolveURLs, shouldAnnotate, startPosition, endPosition, |
| specialCommonAncestor, convertBlocksToInlines); |
| return serializer.createMarkup(); |
| } |
| |
| String createMarkup(const Position& startPosition, |
| const Position& endPosition, |
| EAnnotateForInterchange shouldAnnotate, |
| ConvertBlocksToInlines convertBlocksToInlines, |
| EAbsoluteURLs shouldResolveURLs, |
| Node* constrainingAncestor) { |
| return CreateMarkupAlgorithm<EditingStrategy>::createMarkup( |
| startPosition, endPosition, shouldAnnotate, convertBlocksToInlines, |
| shouldResolveURLs, constrainingAncestor); |
| } |
| |
| String createMarkup(const PositionInFlatTree& startPosition, |
| const PositionInFlatTree& endPosition, |
| EAnnotateForInterchange shouldAnnotate, |
| ConvertBlocksToInlines convertBlocksToInlines, |
| EAbsoluteURLs shouldResolveURLs, |
| Node* constrainingAncestor) { |
| return CreateMarkupAlgorithm<EditingInFlatTreeStrategy>::createMarkup( |
| startPosition, endPosition, shouldAnnotate, convertBlocksToInlines, |
| shouldResolveURLs, constrainingAncestor); |
| } |
| |
| DocumentFragment* createFragmentFromMarkup( |
| Document& document, |
| const String& markup, |
| const String& baseURL, |
| ParserContentPolicy parserContentPolicy) { |
| // We use a fake body element here to trick the HTML parser to using the |
| // InBody insertion mode. |
| HTMLBodyElement* fakeBody = HTMLBodyElement::create(document); |
| DocumentFragment* fragment = DocumentFragment::create(document); |
| |
| fragment->parseHTML(markup, fakeBody, parserContentPolicy); |
| |
| if (!baseURL.isEmpty() && baseURL != blankURL() && |
| baseURL != document.baseURL()) |
| completeURLs(*fragment, baseURL); |
| |
| return fragment; |
| } |
| |
| static const char fragmentMarkerTag[] = "webkit-fragment-marker"; |
| |
| static bool findNodesSurroundingContext(DocumentFragment* fragment, |
| Comment*& nodeBeforeContext, |
| Comment*& nodeAfterContext) { |
| if (!fragment->firstChild()) |
| return false; |
| for (Node& node : NodeTraversal::startsAt(*fragment->firstChild())) { |
| if (node.getNodeType() == Node::kCommentNode && |
| toComment(node).data() == fragmentMarkerTag) { |
| if (!nodeBeforeContext) { |
| nodeBeforeContext = &toComment(node); |
| } else { |
| nodeAfterContext = &toComment(node); |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| static void trimFragment(DocumentFragment* fragment, |
| Comment* nodeBeforeContext, |
| Comment* nodeAfterContext) { |
| Node* next = nullptr; |
| for (Node* node = fragment->firstChild(); node; node = next) { |
| if (nodeBeforeContext->isDescendantOf(node)) { |
| next = NodeTraversal::next(*node); |
| continue; |
| } |
| next = NodeTraversal::nextSkippingChildren(*node); |
| DCHECK(!node->contains(nodeAfterContext)) << node << " " |
| << nodeAfterContext; |
| node->parentNode()->removeChild(node, ASSERT_NO_EXCEPTION); |
| if (nodeBeforeContext == node) |
| break; |
| } |
| |
| DCHECK(nodeAfterContext->parentNode()) << nodeAfterContext; |
| for (Node* node = nodeAfterContext; node; node = next) { |
| next = NodeTraversal::nextSkippingChildren(*node); |
| node->parentNode()->removeChild(node, ASSERT_NO_EXCEPTION); |
| } |
| } |
| |
| DocumentFragment* createFragmentFromMarkupWithContext( |
| Document& document, |
| const String& markup, |
| unsigned fragmentStart, |
| unsigned fragmentEnd, |
| const String& baseURL, |
| ParserContentPolicy parserContentPolicy) { |
| // FIXME: Need to handle the case where the markup already contains these |
| // markers. |
| |
| StringBuilder taggedMarkup; |
| taggedMarkup.append(markup.left(fragmentStart)); |
| MarkupFormatter::appendComment(taggedMarkup, fragmentMarkerTag); |
| taggedMarkup.append( |
| markup.substring(fragmentStart, fragmentEnd - fragmentStart)); |
| MarkupFormatter::appendComment(taggedMarkup, fragmentMarkerTag); |
| taggedMarkup.append(markup.substring(fragmentEnd)); |
| |
| DocumentFragment* taggedFragment = createFragmentFromMarkup( |
| document, taggedMarkup.toString(), baseURL, parserContentPolicy); |
| |
| Comment* nodeBeforeContext = nullptr; |
| Comment* nodeAfterContext = nullptr; |
| if (!findNodesSurroundingContext(taggedFragment, nodeBeforeContext, |
| nodeAfterContext)) |
| return nullptr; |
| |
| Document* taggedDocument = Document::create(); |
| taggedDocument->setContextFeatures(document.contextFeatures()); |
| |
| Element* root = Element::create(QualifiedName::null(), taggedDocument); |
| root->appendChild(taggedFragment); |
| taggedDocument->appendChild(root); |
| |
| Range* range = Range::create( |
| *taggedDocument, |
| Position::afterNode(nodeBeforeContext).parentAnchoredEquivalent(), |
| Position::beforeNode(nodeAfterContext).parentAnchoredEquivalent()); |
| |
| Node* commonAncestor = range->commonAncestorContainer(); |
| HTMLElement* specialCommonAncestor = |
| ancestorToRetainStructureAndAppearanceWithNoLayoutObject(commonAncestor); |
| |
| // When there's a special common ancestor outside of the fragment, we must |
| // include it as well to preserve the structure and appearance of the |
| // fragment. For example, if the fragment contains TD, we need to include the |
| // enclosing TABLE tag as well. |
| DocumentFragment* fragment = DocumentFragment::create(document); |
| if (specialCommonAncestor) |
| fragment->appendChild(specialCommonAncestor); |
| else |
| fragment->parserTakeAllChildrenFrom(toContainerNode(*commonAncestor)); |
| |
| trimFragment(fragment, nodeBeforeContext, nodeAfterContext); |
| |
| return fragment; |
| } |
| |
| String createMarkup(const Node* node, |
| EChildrenOnly childrenOnly, |
| EAbsoluteURLs shouldResolveURLs) { |
| if (!node) |
| return ""; |
| |
| MarkupAccumulator accumulator(shouldResolveURLs); |
| return serializeNodes<EditingStrategy>(accumulator, const_cast<Node&>(*node), |
| childrenOnly); |
| } |
| |
| static void fillContainerFromString(ContainerNode* paragraph, |
| const String& string) { |
| Document& document = paragraph->document(); |
| |
| if (string.isEmpty()) { |
| paragraph->appendChild(HTMLBRElement::create(document)); |
| return; |
| } |
| |
| DCHECK_EQ(string.find('\n'), kNotFound) << string; |
| |
| Vector<String> tabList; |
| string.split('\t', true, tabList); |
| StringBuilder tabText; |
| bool first = true; |
| size_t numEntries = tabList.size(); |
| for (size_t i = 0; i < numEntries; ++i) { |
| const String& s = tabList[i]; |
| |
| // append the non-tab textual part |
| if (!s.isEmpty()) { |
| if (!tabText.isEmpty()) { |
| paragraph->appendChild( |
| createTabSpanElement(document, tabText.toString())); |
| tabText.clear(); |
| } |
| Text* textNode = document.createTextNode( |
| stringWithRebalancedWhitespace(s, first, i + 1 == numEntries)); |
| paragraph->appendChild(textNode); |
| } |
| |
| // there is a tab after every entry, except the last entry |
| // (if the last character is a tab, the list gets an extra empty entry) |
| if (i + 1 != numEntries) |
| tabText.append('\t'); |
| else if (!tabText.isEmpty()) |
| paragraph->appendChild( |
| createTabSpanElement(document, tabText.toString())); |
| |
| first = false; |
| } |
| } |
| |
| bool isPlainTextMarkup(Node* node) { |
| DCHECK(node); |
| if (!isHTMLDivElement(*node)) |
| return false; |
| |
| HTMLDivElement& element = toHTMLDivElement(*node); |
| if (!element.hasAttributes()) |
| return false; |
| |
| if (element.hasOneChild()) |
| return element.firstChild()->isTextNode() || |
| element.firstChild()->hasChildren(); |
| |
| return element.hasChildCount(2) && |
| isTabHTMLSpanElementTextNode(element.firstChild()->firstChild()) && |
| element.lastChild()->isTextNode(); |
| } |
| |
| static bool shouldPreserveNewline(const EphemeralRange& range) { |
| if (Node* node = range.startPosition().nodeAsRangeFirstNode()) { |
| if (LayoutObject* layoutObject = node->layoutObject()) |
| return layoutObject->style()->preserveNewline(); |
| } |
| |
| if (Node* node = range.startPosition().anchorNode()) { |
| if (LayoutObject* layoutObject = node->layoutObject()) |
| return layoutObject->style()->preserveNewline(); |
| } |
| |
| return false; |
| } |
| |
| DocumentFragment* createFragmentFromText(const EphemeralRange& context, |
| const String& text) { |
| if (context.isNull()) |
| return nullptr; |
| |
| Document& document = context.document(); |
| DocumentFragment* fragment = document.createDocumentFragment(); |
| |
| if (text.isEmpty()) |
| return fragment; |
| |
| String string = text; |
| string.replace("\r\n", "\n"); |
| string.replace('\r', '\n'); |
| |
| if (!isRichlyEditablePosition(context.startPosition()) || |
| shouldPreserveNewline(context)) { |
| fragment->appendChild(document.createTextNode(string)); |
| if (string.endsWith('\n')) { |
| HTMLBRElement* element = HTMLBRElement::create(document); |
| element->setAttribute(classAttr, AppleInterchangeNewline); |
| fragment->appendChild(element); |
| } |
| return fragment; |
| } |
| |
| // A string with no newlines gets added inline, rather than being put into a |
| // paragraph. |
| if (string.find('\n') == kNotFound) { |
| fillContainerFromString(fragment, string); |
| return fragment; |
| } |
| |
| // Break string into paragraphs. Extra line breaks turn into empty paragraphs. |
| Element* block = |
| enclosingBlock(context.startPosition().nodeAsRangeFirstNode()); |
| bool useClonesOfEnclosingBlock = |
| block && !isHTMLBodyElement(*block) && !isHTMLHtmlElement(*block) && |
| block != rootEditableElementOf(context.startPosition()); |
| |
| Vector<String> list; |
| string.split('\n', true, list); // true gets us empty strings in the list |
| size_t numLines = list.size(); |
| for (size_t i = 0; i < numLines; ++i) { |
| const String& s = list[i]; |
| |
| Element* element = nullptr; |
| if (s.isEmpty() && i + 1 == numLines) { |
| // For last line, use the "magic BR" rather than a P. |
| element = HTMLBRElement::create(document); |
| element->setAttribute(classAttr, AppleInterchangeNewline); |
| } else { |
| if (useClonesOfEnclosingBlock) |
| element = block->cloneElementWithoutChildren(); |
| else |
| element = createDefaultParagraphElement(document); |
| fillContainerFromString(element, s); |
| } |
| fragment->appendChild(element); |
| } |
| return fragment; |
| } |
| |
| DocumentFragment* createFragmentForInnerOuterHTML( |
| const String& markup, |
| Element* contextElement, |
| ParserContentPolicy parserContentPolicy, |
| const char* method, |
| ExceptionState& exceptionState) { |
| DCHECK(contextElement); |
| Document& document = isHTMLTemplateElement(*contextElement) |
| ? contextElement->document().ensureTemplateDocument() |
| : contextElement->document(); |
| DocumentFragment* fragment = DocumentFragment::create(document); |
| |
| if (document.isHTMLDocument()) { |
| fragment->parseHTML(markup, contextElement, parserContentPolicy); |
| return fragment; |
| } |
| |
| bool wasValid = |
| fragment->parseXML(markup, contextElement, parserContentPolicy); |
| if (!wasValid) { |
| exceptionState.throwDOMException(SyntaxError, |
| "The provided markup is invalid XML, and " |
| "therefore cannot be inserted into an XML " |
| "document."); |
| return nullptr; |
| } |
| return fragment; |
| } |
| |
| DocumentFragment* createFragmentForTransformToFragment( |
| const String& sourceString, |
| const String& sourceMIMEType, |
| Document& outputDoc) { |
| DocumentFragment* fragment = outputDoc.createDocumentFragment(); |
| |
| if (sourceMIMEType == "text/html") { |
| // As far as I can tell, there isn't a spec for how transformToFragment is |
| // supposed to work. Based on the documentation I can find, it looks like we |
| // want to start parsing the fragment in the InBody insertion mode. |
| // Unfortunately, that's an implementation detail of the parser. We achieve |
| // that effect here by passing in a fake body element as context for the |
| // fragment. |
| HTMLBodyElement* fakeBody = HTMLBodyElement::create(outputDoc); |
| fragment->parseHTML(sourceString, fakeBody); |
| } else if (sourceMIMEType == "text/plain") { |
| fragment->parserAppendChild(Text::create(outputDoc, sourceString)); |
| } else { |
| bool successfulParse = fragment->parseXML(sourceString, 0); |
| if (!successfulParse) |
| return nullptr; |
| } |
| |
| // FIXME: Do we need to mess with URLs here? |
| |
| return fragment; |
| } |
| |
| static inline void removeElementPreservingChildren(DocumentFragment* fragment, |
| HTMLElement* element) { |
| Node* nextChild = nullptr; |
| for (Node* child = element->firstChild(); child; child = nextChild) { |
| nextChild = child->nextSibling(); |
| element->removeChild(child); |
| fragment->insertBefore(child, element); |
| } |
| fragment->removeChild(element); |
| } |
| |
| static inline bool isSupportedContainer(Element* element) { |
| DCHECK(element); |
| if (!element->isHTMLElement()) |
| return true; |
| |
| HTMLElement& htmlElement = toHTMLElement(*element); |
| if (htmlElement.hasTagName(colTag) || htmlElement.hasTagName(colgroupTag) || |
| htmlElement.hasTagName(framesetTag) || htmlElement.hasTagName(headTag) || |
| htmlElement.hasTagName(styleTag) || htmlElement.hasTagName(titleTag)) { |
| return false; |
| } |
| return !htmlElement.ieForbidsInsertHTML(); |
| } |
| |
| DocumentFragment* createContextualFragment( |
| const String& markup, |
| Element* element, |
| ParserContentPolicy parserContentPolicy, |
| ExceptionState& exceptionState) { |
| DCHECK(element); |
| if (!isSupportedContainer(element)) { |
| exceptionState.throwDOMException( |
| NotSupportedError, "The range's container is '" + element->localName() + |
| "', which is not supported."); |
| return nullptr; |
| } |
| |
| DocumentFragment* fragment = createFragmentForInnerOuterHTML( |
| markup, element, parserContentPolicy, "createContextualFragment", |
| exceptionState); |
| if (!fragment) |
| return nullptr; |
| |
| // We need to pop <html> and <body> elements and remove <head> to |
| // accommodate folks passing complete HTML documents to make the |
| // child of an element. |
| |
| Node* nextNode = nullptr; |
| for (Node* node = fragment->firstChild(); node; node = nextNode) { |
| nextNode = node->nextSibling(); |
| if (isHTMLHtmlElement(*node) || isHTMLHeadElement(*node) || |
| isHTMLBodyElement(*node)) { |
| HTMLElement* element = toHTMLElement(node); |
| if (Node* firstChild = element->firstChild()) |
| nextNode = firstChild; |
| removeElementPreservingChildren(fragment, element); |
| } |
| } |
| return fragment; |
| } |
| |
| void replaceChildrenWithFragment(ContainerNode* container, |
| DocumentFragment* fragment, |
| ExceptionState& exceptionState) { |
| DCHECK(container); |
| ContainerNode* containerNode(container); |
| |
| ChildListMutationScope mutation(*containerNode); |
| |
| if (!fragment->firstChild()) { |
| containerNode->removeChildren(); |
| return; |
| } |
| |
| // FIXME: This is wrong if containerNode->firstChild() has more than one ref! |
| if (containerNode->hasOneTextChild() && fragment->hasOneTextChild()) { |
| toText(containerNode->firstChild()) |
| ->setData(toText(fragment->firstChild())->data()); |
| return; |
| } |
| |
| // FIXME: No need to replace the child it is a text node and its contents are |
| // already == text. |
| if (containerNode->hasOneChild()) { |
| containerNode->replaceChild(fragment, containerNode->firstChild(), |
| exceptionState); |
| return; |
| } |
| |
| containerNode->removeChildren(); |
| containerNode->appendChild(fragment, exceptionState); |
| } |
| |
| void replaceChildrenWithText(ContainerNode* container, |
| const String& text, |
| ExceptionState& exceptionState) { |
| DCHECK(container); |
| ContainerNode* containerNode(container); |
| |
| ChildListMutationScope mutation(*containerNode); |
| |
| // FIXME: This is wrong if containerNode->firstChild() has more than one ref! |
| // Example: |
| // <div>foo</div> |
| // <script> |
| // var oldText = div.firstChild; |
| // console.log(oldText.data); // foo |
| // div.innerText = "bar"; |
| // console.log(oldText.data); // bar!?! |
| // </script> |
| // I believe this is an intentional benchmark cheat from years ago. |
| // We should re-visit if we actually want this still. |
| if (containerNode->hasOneTextChild()) { |
| toText(containerNode->firstChild())->setData(text); |
| return; |
| } |
| |
| // NOTE: This method currently always creates a text node, even if that text |
| // node will be empty. |
| Text* textNode = Text::create(containerNode->document(), text); |
| |
| // FIXME: No need to replace the child it is a text node and its contents are |
| // already == text. |
| if (containerNode->hasOneChild()) { |
| containerNode->replaceChild(textNode, containerNode->firstChild(), |
| exceptionState); |
| return; |
| } |
| |
| containerNode->removeChildren(); |
| containerNode->appendChild(textNode, exceptionState); |
| } |
| |
| void mergeWithNextTextNode(Text* textNode, ExceptionState& exceptionState) { |
| DCHECK(textNode); |
| Node* next = textNode->nextSibling(); |
| if (!next || !next->isTextNode()) |
| return; |
| |
| Text* textNext = toText(next); |
| textNode->appendData(textNext->data()); |
| if (textNext->parentNode()) // Might have been removed by mutation event. |
| textNext->remove(exceptionState); |
| } |
| |
| template class CORE_TEMPLATE_EXPORT CreateMarkupAlgorithm<EditingStrategy>; |
| template class CORE_TEMPLATE_EXPORT |
| CreateMarkupAlgorithm<EditingInFlatTreeStrategy>; |
| |
| } // namespace blink |