| /* |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2013 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 "config.h" |
| #include "markup.h" |
| |
| #include "CDATASection.h" |
| #include "CSSPrimitiveValue.h" |
| #include "CSSPropertyNames.h" |
| #include "CSSValue.h" |
| #include "CSSValueKeywords.h" |
| #include "ChildListMutationScope.h" |
| #include "ContextFeatures.h" |
| #if ENABLE(DELETION_UI) |
| #include "DeleteButtonController.h" |
| #endif |
| #include "DocumentFragment.h" |
| #include "Editor.h" |
| #include "ExceptionCode.h" |
| #include "ExceptionCodePlaceholder.h" |
| #include "Frame.h" |
| #include "HTMLBodyElement.h" |
| #include "HTMLElement.h" |
| #include "HTMLNames.h" |
| #include "HTMLTableElement.h" |
| #include "HTMLTextAreaElement.h" |
| #include "HTMLTextFormControlElement.h" |
| #include "KURL.h" |
| #include "MarkupAccumulator.h" |
| #include "NodeTraversal.h" |
| #include "Range.h" |
| #include "RenderBlock.h" |
| #include "RenderObject.h" |
| #include "StylePropertySet.h" |
| #include "TextIterator.h" |
| #include "VisibleSelection.h" |
| #include "VisibleUnits.h" |
| #include "htmlediting.h" |
| #include <wtf/StdLibExtras.h> |
| #include <wtf/text/StringBuilder.h> |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| static bool propertyMissingOrEqualToNone(StylePropertySet*, CSSPropertyID); |
| |
| class AttributeChange { |
| public: |
| AttributeChange() |
| : m_name(nullAtom, nullAtom, nullAtom) |
| { |
| } |
| |
| AttributeChange(PassRefPtr<Element> element, const QualifiedName& name, const String& value) |
| : m_element(element), m_name(name), m_value(value) |
| { |
| } |
| |
| void apply() |
| { |
| m_element->setAttribute(m_name, m_value); |
| } |
| |
| private: |
| RefPtr<Element> m_element; |
| QualifiedName m_name; |
| String m_value; |
| }; |
| |
| static void completeURLs(DocumentFragment* fragment, const String& baseURL) |
| { |
| Vector<AttributeChange> changes; |
| |
| KURL parsedBaseURL(ParsedURLString, baseURL); |
| |
| for (Element* element = ElementTraversal::firstWithin(fragment); element; element = ElementTraversal::next(element, fragment)) { |
| if (!element->hasAttributes()) |
| continue; |
| unsigned length = element->attributeCount(); |
| for (unsigned i = 0; i < length; i++) { |
| const Attribute* attribute = element->attributeItem(i); |
| if (element->isURLAttribute(*attribute) && !attribute->value().isEmpty()) |
| changes.append(AttributeChange(element, attribute->name(), KURL(parsedBaseURL, attribute->value()).string())); |
| } |
| } |
| |
| size_t numChanges = changes.size(); |
| for (size_t i = 0; i < numChanges; ++i) |
| changes[i].apply(); |
| } |
| |
| class StyledMarkupAccumulator : public MarkupAccumulator { |
| public: |
| enum RangeFullySelectsNode { DoesFullySelectNode, DoesNotFullySelectNode }; |
| |
| StyledMarkupAccumulator(Vector<Node*>* nodes, EAbsoluteURLs, EAnnotateForInterchange, const Range*, Node* highestNodeToBeSerialized = 0); |
| Node* serializeNodes(Node* startNode, Node* pastEnd); |
| virtual void appendString(const String& s) { return MarkupAccumulator::appendString(s); } |
| void wrapWithNode(Node*, bool convertBlocksToInlines = false, RangeFullySelectsNode = DoesFullySelectNode); |
| void wrapWithStyleNode(StylePropertySet*, Document*, bool isBlock = false); |
| String takeResults(); |
| |
| private: |
| void appendStyleNodeOpenTag(StringBuilder&, StylePropertySet*, Document*, bool isBlock = false); |
| const String& styleNodeCloseTag(bool isBlock = false); |
| virtual void appendText(StringBuilder& out, Text*); |
| String renderedText(const Node*, const Range*); |
| String stringValueForRange(const Node*, const Range*); |
| void appendElement(StringBuilder& out, Element*, bool addDisplayInline, RangeFullySelectsNode); |
| void appendElement(StringBuilder& out, Element* element, Namespaces*) { appendElement(out, element, false, DoesFullySelectNode); } |
| |
| enum NodeTraversalMode { EmitString, DoNotEmitString }; |
| Node* traverseNodesForSerialization(Node* startNode, Node* pastEnd, NodeTraversalMode); |
| |
| bool shouldAnnotate() { return m_shouldAnnotate == AnnotateForInterchange; } |
| bool shouldApplyWrappingStyle(Node* node) const |
| { |
| return m_highestNodeToBeSerialized && m_highestNodeToBeSerialized->parentNode() == node->parentNode() |
| && m_wrappingStyle && m_wrappingStyle->style(); |
| } |
| |
| Vector<String> m_reversedPrecedingMarkup; |
| const EAnnotateForInterchange m_shouldAnnotate; |
| Node* m_highestNodeToBeSerialized; |
| RefPtr<EditingStyle> m_wrappingStyle; |
| }; |
| |
| inline StyledMarkupAccumulator::StyledMarkupAccumulator(Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs, EAnnotateForInterchange shouldAnnotate, |
| const Range* range, Node* highestNodeToBeSerialized) |
| : MarkupAccumulator(nodes, shouldResolveURLs, range) |
| , m_shouldAnnotate(shouldAnnotate) |
| , m_highestNodeToBeSerialized(highestNodeToBeSerialized) |
| { |
| } |
| |
| void StyledMarkupAccumulator::wrapWithNode(Node* node, bool convertBlocksToInlines, RangeFullySelectsNode rangeFullySelectsNode) |
| { |
| StringBuilder markup; |
| if (node->isElementNode()) |
| appendElement(markup, toElement(node), convertBlocksToInlines && isBlock(const_cast<Node*>(node)), rangeFullySelectsNode); |
| else |
| appendStartMarkup(markup, node, 0); |
| m_reversedPrecedingMarkup.append(markup.toString()); |
| appendEndTag(node); |
| if (m_nodes) |
| m_nodes->append(node); |
| } |
| |
| void StyledMarkupAccumulator::wrapWithStyleNode(StylePropertySet* style, Document* document, bool isBlock) |
| { |
| StringBuilder openTag; |
| appendStyleNodeOpenTag(openTag, style, document, isBlock); |
| m_reversedPrecedingMarkup.append(openTag.toString()); |
| appendString(styleNodeCloseTag(isBlock)); |
| } |
| |
| void StyledMarkupAccumulator::appendStyleNodeOpenTag(StringBuilder& out, StylePropertySet* style, Document* document, bool isBlock) |
| { |
| // wrappingStyleForSerialization should have removed -webkit-text-decorations-in-effect |
| ASSERT(propertyMissingOrEqualToNone(style, CSSPropertyWebkitTextDecorationsInEffect)); |
| if (isBlock) |
| out.appendLiteral("<div style=\""); |
| else |
| out.appendLiteral("<span style=\""); |
| appendAttributeValue(out, style->asText(), document->isHTMLDocument()); |
| out.appendLiteral("\">"); |
| } |
| |
| const String& StyledMarkupAccumulator::styleNodeCloseTag(bool isBlock) |
| { |
| DEFINE_STATIC_LOCAL(const String, divClose, (ASCIILiteral("</div>"))); |
| DEFINE_STATIC_LOCAL(const String, styleSpanClose, (ASCIILiteral("</span>"))); |
| return isBlock ? divClose : styleSpanClose; |
| } |
| |
| String StyledMarkupAccumulator::takeResults() |
| { |
| StringBuilder result; |
| result.reserveCapacity(totalLength(m_reversedPrecedingMarkup) + length()); |
| |
| for (size_t i = m_reversedPrecedingMarkup.size(); i > 0; --i) |
| result.append(m_reversedPrecedingMarkup[i - 1]); |
| |
| concatenateMarkup(result); |
| |
| // We remove '\0' characters because they are not visibly rendered to the user. |
| return result.toString().replaceWithLiteral('\0', ""); |
| } |
| |
| void StyledMarkupAccumulator::appendText(StringBuilder& out, Text* text) |
| { |
| const bool parentIsTextarea = text->parentElement() && isHTMLTextAreaElement(text->parentElement()); |
| const bool wrappingSpan = shouldApplyWrappingStyle(text) && !parentIsTextarea; |
| if (wrappingSpan) { |
| RefPtr<EditingStyle> wrappingStyle = m_wrappingStyle->copy(); |
| // FIXME: <rdar://problem/5371536> Style rules that match pasted content can change it's appearance |
| // Make sure spans are inline style in paste side e.g. span { display: block }. |
| wrappingStyle->forceInline(); |
| // FIXME: Should this be included in forceInline? |
| wrappingStyle->style()->setProperty(CSSPropertyFloat, CSSValueNone); |
| |
| appendStyleNodeOpenTag(out, wrappingStyle->style(), text->document()); |
| } |
| |
| if (!shouldAnnotate() || parentIsTextarea) |
| MarkupAccumulator::appendText(out, text); |
| else { |
| const bool useRenderedText = !enclosingNodeWithTag(firstPositionInNode(text), selectTag); |
| String content = useRenderedText ? renderedText(text, m_range) : stringValueForRange(text, m_range); |
| StringBuilder buffer; |
| appendCharactersReplacingEntities(buffer, content, 0, content.length(), EntityMaskInPCDATA); |
| out.append(convertHTMLTextToInterchangeFormat(buffer.toString(), text)); |
| } |
| |
| if (wrappingSpan) |
| out.append(styleNodeCloseTag()); |
| } |
| |
| String StyledMarkupAccumulator::renderedText(const Node* node, const Range* range) |
| { |
| if (!node->isTextNode()) |
| return String(); |
| |
| const Text* textNode = static_cast<const Text*>(node); |
| unsigned startOffset = 0; |
| unsigned endOffset = textNode->length(); |
| |
| if (range && node == range->startContainer()) |
| startOffset = range->startOffset(); |
| if (range && node == range->endContainer()) |
| endOffset = range->endOffset(); |
| |
| Position start = createLegacyEditingPosition(const_cast<Node*>(node), startOffset); |
| Position end = createLegacyEditingPosition(const_cast<Node*>(node), endOffset); |
| return plainText(Range::create(node->document(), start, end).get()); |
| } |
| |
| String StyledMarkupAccumulator::stringValueForRange(const Node* node, const Range* range) |
| { |
| if (!range) |
| return node->nodeValue(); |
| |
| String str = node->nodeValue(); |
| if (node == range->endContainer()) |
| str.truncate(range->endOffset()); |
| if (node == range->startContainer()) |
| str.remove(0, range->startOffset()); |
| return str; |
| } |
| |
| void StyledMarkupAccumulator::appendElement(StringBuilder& out, Element* element, bool addDisplayInline, RangeFullySelectsNode rangeFullySelectsNode) |
| { |
| const bool documentIsHTML = element->document()->isHTMLDocument(); |
| appendOpenTag(out, element, 0); |
| |
| const unsigned length = element->hasAttributes() ? element->attributeCount() : 0; |
| const bool shouldAnnotateOrForceInline = element->isHTMLElement() && (shouldAnnotate() || addDisplayInline); |
| const bool shouldOverrideStyleAttr = shouldAnnotateOrForceInline || shouldApplyWrappingStyle(element); |
| for (unsigned i = 0; i < length; ++i) { |
| const Attribute* attribute = element->attributeItem(i); |
| // We'll handle the style attribute separately, below. |
| if (attribute->name() == styleAttr && shouldOverrideStyleAttr) |
| continue; |
| appendAttribute(out, element, *attribute, 0); |
| } |
| |
| if (shouldOverrideStyleAttr) { |
| RefPtr<EditingStyle> newInlineStyle; |
| |
| if (shouldApplyWrappingStyle(element)) { |
| newInlineStyle = m_wrappingStyle->copy(); |
| newInlineStyle->removePropertiesInElementDefaultStyle(element); |
| newInlineStyle->removeStyleConflictingWithStyleOfNode(element); |
| } else |
| newInlineStyle = EditingStyle::create(); |
| |
| if (element->isStyledElement() && static_cast<StyledElement*>(element)->inlineStyle()) |
| newInlineStyle->overrideWithStyle(static_cast<StyledElement*>(element)->inlineStyle()); |
| |
| if (shouldAnnotateOrForceInline) { |
| if (shouldAnnotate()) |
| newInlineStyle->mergeStyleFromRulesForSerialization(toHTMLElement(element)); |
| |
| if (addDisplayInline) |
| newInlineStyle->forceInline(); |
| |
| // If the node is not fully selected by the range, then we don't want to keep styles that affect its relationship to the nodes around it |
| // only the ones that affect it and the nodes within it. |
| if (rangeFullySelectsNode == DoesNotFullySelectNode && newInlineStyle->style()) |
| newInlineStyle->style()->removeProperty(CSSPropertyFloat); |
| } |
| |
| if (!newInlineStyle->isEmpty()) { |
| out.appendLiteral(" style=\""); |
| appendAttributeValue(out, newInlineStyle->style()->asText(), documentIsHTML); |
| out.append('\"'); |
| } |
| } |
| |
| appendCloseTag(out, element); |
| } |
| |
| Node* StyledMarkupAccumulator::serializeNodes(Node* startNode, Node* pastEnd) |
| { |
| if (!m_highestNodeToBeSerialized) { |
| Node* lastClosed = traverseNodesForSerialization(startNode, pastEnd, DoNotEmitString); |
| m_highestNodeToBeSerialized = lastClosed; |
| } |
| |
| if (m_highestNodeToBeSerialized && m_highestNodeToBeSerialized->parentNode()) |
| m_wrappingStyle = EditingStyle::wrappingStyleForSerialization(m_highestNodeToBeSerialized->parentNode(), shouldAnnotate()); |
| |
| return traverseNodesForSerialization(startNode, pastEnd, EmitString); |
| } |
| |
| Node* StyledMarkupAccumulator::traverseNodesForSerialization(Node* startNode, Node* pastEnd, NodeTraversalMode traversalMode) |
| { |
| const bool shouldEmit = traversalMode == EmitString; |
| Vector<Node*> ancestorsToClose; |
| Node* next; |
| Node* lastClosed = 0; |
| for (Node* n = startNode; n != pastEnd; n = next) { |
| // According to <rdar://problem/5730668>, it is possible for n to blow |
| // past pastEnd and become null here. This shouldn't be possible. |
| // This null check will prevent crashes (but create too much markup) |
| // and the ASSERT will hopefully lead us to understanding the problem. |
| ASSERT(n); |
| if (!n) |
| break; |
| |
| next = NodeTraversal::next(n); |
| bool openedTag = false; |
| |
| if (isBlock(n) && canHaveChildrenForEditing(n) && next == pastEnd) |
| // Don't write out empty block containers that aren't fully selected. |
| continue; |
| |
| if (!n->renderer() && !enclosingNodeWithTag(firstPositionInOrBeforeNode(n), selectTag)) { |
| next = NodeTraversal::nextSkippingChildren(n); |
| // Don't skip over pastEnd. |
| if (pastEnd && pastEnd->isDescendantOf(n)) |
| next = pastEnd; |
| } else { |
| // Add the node to the markup if we're not skipping the descendants |
| if (shouldEmit) |
| appendStartTag(n); |
| |
| // If node has no children, close the tag now. |
| if (!n->childNodeCount()) { |
| if (shouldEmit) |
| appendEndTag(n); |
| lastClosed = n; |
| } else { |
| openedTag = true; |
| ancestorsToClose.append(n); |
| } |
| } |
| |
| // If we didn't insert open tag and there's no more siblings or we're at the end of the traversal, take care of ancestors. |
| // FIXME: What happens if we just inserted open tag and reached the end? |
| if (!openedTag && (!n->nextSibling() || next == pastEnd)) { |
| // Close up the ancestors. |
| while (!ancestorsToClose.isEmpty()) { |
| Node* ancestor = ancestorsToClose.last(); |
| if (next != pastEnd && next->isDescendantOf(ancestor)) |
| break; |
| // Not at the end of the range, close ancestors up to sibling of next node. |
| if (shouldEmit) |
| appendEndTag(ancestor); |
| lastClosed = ancestor; |
| ancestorsToClose.removeLast(); |
| } |
| |
| // Surround the currently accumulated markup with markup for ancestors we never opened as we leave the subtree(s) rooted at those ancestors. |
| ContainerNode* nextParent = next ? next->parentNode() : 0; |
| if (next != pastEnd && n != nextParent) { |
| Node* lastAncestorClosedOrSelf = n->isDescendantOf(lastClosed) ? lastClosed : n; |
| for (ContainerNode* parent = lastAncestorClosedOrSelf->parentNode(); parent && parent != nextParent; parent = parent->parentNode()) { |
| // All ancestors that aren't in the ancestorsToClose list should either be a) unrendered: |
| if (!parent->renderer()) |
| continue; |
| // or b) ancestors that we never encountered during a pre-order traversal starting at startNode: |
| ASSERT(startNode->isDescendantOf(parent)); |
| if (shouldEmit) |
| wrapWithNode(parent); |
| lastClosed = parent; |
| } |
| } |
| } |
| } |
| |
| return lastClosed; |
| } |
| |
| static bool isHTMLBlockElement(const Node* node) |
| { |
| return node->hasTagName(tdTag) |
| || node->hasTagName(thTag) |
| || isNonTableCellHTMLBlockElement(node); |
| } |
| |
| static Node* ancestorToRetainStructureAndAppearanceForBlock(Node* commonAncestorBlock) |
| { |
| if (!commonAncestorBlock) |
| return 0; |
| |
| if (commonAncestorBlock->hasTagName(tbodyTag) || commonAncestorBlock->hasTagName(trTag)) { |
| ContainerNode* table = commonAncestorBlock->parentNode(); |
| while (table && !isHTMLTableElement(table)) |
| table = table->parentNode(); |
| |
| return table; |
| } |
| |
| if (isNonTableCellHTMLBlockElement(commonAncestorBlock)) |
| return commonAncestorBlock; |
| |
| return 0; |
| } |
| |
| static inline Node* ancestorToRetainStructureAndAppearance(Node* commonAncestor) |
| { |
| return ancestorToRetainStructureAndAppearanceForBlock(enclosingBlock(commonAncestor)); |
| } |
| |
| static inline Node* ancestorToRetainStructureAndAppearanceWithNoRenderer(Node* commonAncestor) |
| { |
| Node* commonAncestorBlock = enclosingNodeOfType(firstPositionInOrBeforeNode(commonAncestor), isHTMLBlockElement); |
| return ancestorToRetainStructureAndAppearanceForBlock(commonAncestorBlock); |
| } |
| |
| static bool propertyMissingOrEqualToNone(StylePropertySet* style, CSSPropertyID propertyID) |
| { |
| if (!style) |
| return false; |
| RefPtr<CSSValue> value = style->getPropertyCSSValue(propertyID); |
| if (!value) |
| return true; |
| if (!value->isPrimitiveValue()) |
| return false; |
| return static_cast<CSSPrimitiveValue*>(value.get())->getValueID() == CSSValueNone; |
| } |
| |
| static bool needInterchangeNewlineAfter(const VisiblePosition& v) |
| { |
| VisiblePosition next = v.next(); |
| Node* upstreamNode = next.deepEquivalent().upstream().deprecatedNode(); |
| Node* downstreamNode = v.deepEquivalent().downstream().deprecatedNode(); |
| // Add an interchange newline if a paragraph break is selected and a br won't already be added to the markup to represent it. |
| return isEndOfParagraph(v) && isStartOfParagraph(next) && !(upstreamNode->hasTagName(brTag) && upstreamNode == downstreamNode); |
| } |
| |
| static PassRefPtr<EditingStyle> styleFromMatchedRulesAndInlineDecl(const Node* node) |
| { |
| if (!node->isHTMLElement()) |
| return 0; |
| |
| // FIXME: Having to const_cast here is ugly, but it is quite a bit of work to untangle |
| // the non-const-ness of styleFromMatchedRulesForElement. |
| HTMLElement* element = const_cast<HTMLElement*>(static_cast<const HTMLElement*>(node)); |
| RefPtr<EditingStyle> style = EditingStyle::create(element->inlineStyle()); |
| style->mergeStyleFromRules(element); |
| return style.release(); |
| } |
| |
| static bool isElementPresentational(const Node* node) |
| { |
| return node->hasTagName(uTag) || node->hasTagName(sTag) || node->hasTagName(strikeTag) |
| || node->hasTagName(iTag) || node->hasTagName(emTag) || node->hasTagName(bTag) || node->hasTagName(strongTag); |
| } |
| |
| static Node* highestAncestorToWrapMarkup(const Range* range, EAnnotateForInterchange shouldAnnotate) |
| { |
| Node* commonAncestor = range->commonAncestorContainer(IGNORE_EXCEPTION); |
| ASSERT(commonAncestor); |
| Node* specialCommonAncestor = 0; |
| 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(range->firstNode()), isListItem)) { |
| if (WebCore::areRangesEqual(VisibleSelection::selectionFromContentsOfNode(parentListNode).toNormalizedRange().get(), range)) { |
| specialCommonAncestor = parentListNode->parentNode(); |
| while (specialCommonAncestor && !isListElement(specialCommonAncestor)) |
| specialCommonAncestor = specialCommonAncestor->parentNode(); |
| } |
| } |
| |
| // Retain the Mail quote level by including all ancestor mail block quotes. |
| if (Node* highestMailBlockquote = highestEnclosingNodeOfType(firstPositionInOrBeforeNode(range->firstNode()), isMailBlockquote, CanCrossEditingBoundary)) |
| specialCommonAncestor = highestMailBlockquote; |
| } |
| |
| Node* checkAncestor = specialCommonAncestor ? specialCommonAncestor : commonAncestor; |
| if (checkAncestor->renderer() && checkAncestor->renderer()->containingBlock()) { |
| Node* newSpecialCommonAncestor = highestEnclosingNodeOfType(firstPositionInNode(checkAncestor), &isElementPresentational, CanCrossEditingBoundary, checkAncestor->renderer()->containingBlock()->node()); |
| 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 && isTabSpanTextNode(commonAncestor)) |
| specialCommonAncestor = commonAncestor->parentNode(); |
| if (!specialCommonAncestor && isTabSpanNode(commonAncestor)) |
| specialCommonAncestor = commonAncestor; |
| |
| if (Node *enclosingAnchor = enclosingNodeWithTag(firstPositionInNode(specialCommonAncestor ? specialCommonAncestor : commonAncestor), aTag)) |
| specialCommonAncestor = enclosingAnchor; |
| |
| return specialCommonAncestor; |
| } |
| |
| // 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() |
| static String createMarkupInternal(Document* document, const Range* range, const Range* updatedRange, Vector<Node*>* nodes, |
| EAnnotateForInterchange shouldAnnotate, bool convertBlocksToInlines, EAbsoluteURLs shouldResolveURLs) |
| { |
| ASSERT(document); |
| ASSERT(range); |
| ASSERT(updatedRange); |
| DEFINE_STATIC_LOCAL(const String, interchangeNewlineString, (ASCIILiteral("<br class=\"" AppleInterchangeNewline "\">"))); |
| |
| bool collapsed = updatedRange->collapsed(ASSERT_NO_EXCEPTION); |
| if (collapsed) |
| return emptyString(); |
| Node* commonAncestor = updatedRange->commonAncestorContainer(ASSERT_NO_EXCEPTION); |
| if (!commonAncestor) |
| return emptyString(); |
| |
| document->updateLayoutIgnorePendingStylesheets(); |
| |
| Node* body = enclosingNodeWithTag(firstPositionInNode(commonAncestor), bodyTag); |
| Node* fullySelectedRoot = 0; |
| // FIXME: Do this for all fully selected blocks, not just the body. |
| if (body && areRangesEqual(VisibleSelection::selectionFromContentsOfNode(body).toNormalizedRange().get(), range)) |
| fullySelectedRoot = body; |
| Node* specialCommonAncestor = highestAncestorToWrapMarkup(updatedRange, shouldAnnotate); |
| StyledMarkupAccumulator accumulator(nodes, shouldResolveURLs, shouldAnnotate, updatedRange, specialCommonAncestor); |
| Node* pastEnd = updatedRange->pastLastNode(); |
| |
| Node* startNode = updatedRange->firstNode(); |
| VisiblePosition visibleStart(updatedRange->startPosition(), VP_DEFAULT_AFFINITY); |
| VisiblePosition visibleEnd(updatedRange->endPosition(), VP_DEFAULT_AFFINITY); |
| if (shouldAnnotate == AnnotateForInterchange && needInterchangeNewlineAfter(visibleStart)) { |
| if (visibleStart == visibleEnd.previous()) |
| return interchangeNewlineString; |
| |
| accumulator.appendString(interchangeNewlineString); |
| startNode = visibleStart.next().deepEquivalent().deprecatedNode(); |
| |
| if (pastEnd && Range::compareBoundaryPoints(startNode, 0, pastEnd, 0, ASSERT_NO_EXCEPTION) >= 0) |
| return interchangeNewlineString; |
| } |
| |
| Node* lastClosed = accumulator.serializeNodes(startNode, pastEnd); |
| |
| if (specialCommonAncestor && lastClosed) { |
| // Also include all of the ancestors of lastClosed up to this special ancestor. |
| for (ContainerNode* ancestor = lastClosed->parentNode(); ancestor; ancestor = ancestor->parentNode()) { |
| if (ancestor == fullySelectedRoot && !convertBlocksToInlines) { |
| RefPtr<EditingStyle> fullySelectedRootStyle = styleFromMatchedRulesAndInlineDecl(fullySelectedRoot); |
| |
| // Bring the background attribute over, but not as an attribute because a background attribute on a div |
| // appears to have no effect. |
| if ((!fullySelectedRootStyle || !fullySelectedRootStyle->style() || !fullySelectedRootStyle->style()->getPropertyCSSValue(CSSPropertyBackgroundImage)) |
| && toElement(fullySelectedRoot)->hasAttribute(backgroundAttr)) |
| fullySelectedRootStyle->style()->setProperty(CSSPropertyBackgroundImage, "url('" + toElement(fullySelectedRoot)->getAttribute(backgroundAttr) + "')"); |
| |
| if (fullySelectedRootStyle->style()) { |
| // Reset the CSS properties to avoid an assertion error in addStyleMarkup(). |
| // This assertion is caused at least when we select all text of a <body> element whose |
| // 'text-decoration' property is "inherit", and copy it. |
| if (!propertyMissingOrEqualToNone(fullySelectedRootStyle->style(), CSSPropertyTextDecoration)) |
| fullySelectedRootStyle->style()->setProperty(CSSPropertyTextDecoration, CSSValueNone); |
| if (!propertyMissingOrEqualToNone(fullySelectedRootStyle->style(), CSSPropertyWebkitTextDecorationsInEffect)) |
| fullySelectedRootStyle->style()->setProperty(CSSPropertyWebkitTextDecorationsInEffect, CSSValueNone); |
| accumulator.wrapWithStyleNode(fullySelectedRootStyle->style(), document, true); |
| } |
| } else { |
| // Since this node and all the other ancestors are not in the selection we want to set RangeFullySelectsNode to DoesNotFullySelectNode |
| // so that styles that affect the exterior of the node are not included. |
| accumulator.wrapWithNode(ancestor, convertBlocksToInlines, StyledMarkupAccumulator::DoesNotFullySelectNode); |
| } |
| if (nodes) |
| nodes->append(ancestor); |
| |
| lastClosed = ancestor; |
| |
| if (ancestor == specialCommonAncestor) |
| break; |
| } |
| } |
| |
| // FIXME: The interchange newline should be placed in the block that it's in, not after all of the content, unconditionally. |
| if (shouldAnnotate == AnnotateForInterchange && needInterchangeNewlineAfter(visibleEnd.previous())) |
| accumulator.appendString(interchangeNewlineString); |
| |
| return accumulator.takeResults(); |
| } |
| |
| String createMarkup(const Range* range, Vector<Node*>* nodes, EAnnotateForInterchange shouldAnnotate, bool convertBlocksToInlines, EAbsoluteURLs shouldResolveURLs) |
| { |
| if (!range) |
| return emptyString(); |
| |
| Document* document = range->ownerDocument(); |
| if (!document) |
| return emptyString(); |
| |
| const Range* updatedRange = range; |
| |
| #if ENABLE(DELETION_UI) |
| // Disable the delete button so it's elements are not serialized into the markup, |
| // but make sure neither endpoint is inside the delete user interface. |
| Frame* frame = document->frame(); |
| DeleteButtonControllerDisableScope deleteButtonControllerDisableScope(frame); |
| |
| RefPtr<Range> updatedRangeRef; |
| if (frame) { |
| updatedRangeRef = frame->editor().avoidIntersectionWithDeleteButtonController(range); |
| updatedRange = updatedRangeRef.get(); |
| if (!updatedRange) |
| return emptyString(); |
| } |
| #endif |
| |
| return createMarkupInternal(document, range, updatedRange, nodes, shouldAnnotate, convertBlocksToInlines, shouldResolveURLs); |
| } |
| |
| PassRefPtr<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. |
| RefPtr<HTMLBodyElement> fakeBody = HTMLBodyElement::create(document); |
| RefPtr<DocumentFragment> fragment = DocumentFragment::create(document); |
| |
| fragment->parseHTML(markup, fakeBody.get(), parserContentPolicy); |
| |
| if (!baseURL.isEmpty() && baseURL != blankURL() && baseURL != document->baseURL()) |
| completeURLs(fragment.get(), baseURL); |
| |
| return fragment.release(); |
| } |
| |
| static const char fragmentMarkerTag[] = "webkit-fragment-marker"; |
| |
| static bool findNodesSurroundingContext(Document* document, RefPtr<Node>& nodeBeforeContext, RefPtr<Node>& nodeAfterContext) |
| { |
| for (Node* node = document->firstChild(); node; node = NodeTraversal::next(node)) { |
| if (node->nodeType() == Node::COMMENT_NODE && static_cast<CharacterData*>(node)->data() == fragmentMarkerTag) { |
| if (!nodeBeforeContext) |
| nodeBeforeContext = node; |
| else { |
| nodeAfterContext = node; |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| static void trimFragment(DocumentFragment* fragment, Node* nodeBeforeContext, Node* nodeAfterContext) |
| { |
| RefPtr<Node> next; |
| for (RefPtr<Node> node = fragment->firstChild(); node; node = next) { |
| if (nodeBeforeContext->isDescendantOf(node.get())) { |
| next = NodeTraversal::next(node.get()); |
| continue; |
| } |
| next = NodeTraversal::nextSkippingChildren(node.get()); |
| ASSERT(!node->contains(nodeAfterContext)); |
| node->parentNode()->removeChild(node.get(), ASSERT_NO_EXCEPTION); |
| if (nodeBeforeContext == node) |
| break; |
| } |
| |
| ASSERT(nodeAfterContext->parentNode()); |
| for (RefPtr<Node> node = nodeAfterContext; node; node = next) { |
| next = NodeTraversal::nextSkippingChildren(node.get()); |
| node->parentNode()->removeChild(node.get(), ASSERT_NO_EXCEPTION); |
| } |
| } |
| |
| PassRefPtr<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)); |
| MarkupAccumulator::appendComment(taggedMarkup, fragmentMarkerTag); |
| taggedMarkup.append(markup.substring(fragmentStart, fragmentEnd - fragmentStart)); |
| MarkupAccumulator::appendComment(taggedMarkup, fragmentMarkerTag); |
| taggedMarkup.append(markup.substring(fragmentEnd)); |
| |
| RefPtr<DocumentFragment> taggedFragment = createFragmentFromMarkup(document, taggedMarkup.toString(), baseURL, parserContentPolicy); |
| RefPtr<Document> taggedDocument = Document::create(0, KURL()); |
| taggedDocument->setContextFeatures(document->contextFeatures()); |
| taggedDocument->takeAllChildrenFrom(taggedFragment.get()); |
| |
| RefPtr<Node> nodeBeforeContext; |
| RefPtr<Node> nodeAfterContext; |
| if (!findNodesSurroundingContext(taggedDocument.get(), nodeBeforeContext, nodeAfterContext)) |
| return 0; |
| |
| RefPtr<Range> range = Range::create(taggedDocument.get(), |
| positionAfterNode(nodeBeforeContext.get()).parentAnchoredEquivalent(), |
| positionBeforeNode(nodeAfterContext.get()).parentAnchoredEquivalent()); |
| |
| Node* commonAncestor = range->commonAncestorContainer(ASSERT_NO_EXCEPTION); |
| Node* specialCommonAncestor = ancestorToRetainStructureAndAppearanceWithNoRenderer(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. |
| RefPtr<DocumentFragment> fragment = DocumentFragment::create(document); |
| if (specialCommonAncestor) |
| fragment->appendChild(specialCommonAncestor, ASSERT_NO_EXCEPTION); |
| else |
| fragment->takeAllChildrenFrom(toContainerNode(commonAncestor)); |
| |
| trimFragment(fragment.get(), nodeBeforeContext.get(), nodeAfterContext.get()); |
| |
| return fragment; |
| } |
| |
| String createMarkup(const Node* node, EChildrenOnly childrenOnly, Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs, Vector<QualifiedName>* tagNamesToSkip, EFragmentSerialization fragmentSerialization) |
| { |
| if (!node) |
| return ""; |
| |
| HTMLElement* deleteButtonContainerElement = 0; |
| #if ENABLE(DELETION_UI) |
| if (Frame* frame = node->document()->frame()) { |
| deleteButtonContainerElement = frame->editor().deleteButtonController()->containerElement(); |
| if (node->isDescendantOf(deleteButtonContainerElement)) |
| return ""; |
| } |
| #endif |
| MarkupAccumulator accumulator(nodes, shouldResolveURLs, 0, fragmentSerialization); |
| return accumulator.serializeNodes(const_cast<Node*>(node), deleteButtonContainerElement, childrenOnly, tagNamesToSkip); |
| } |
| |
| static void fillContainerFromString(ContainerNode* paragraph, const String& string) |
| { |
| Document* document = paragraph->document(); |
| |
| if (string.isEmpty()) { |
| paragraph->appendChild(createBlockPlaceholderElement(document), ASSERT_NO_EXCEPTION); |
| return; |
| } |
| |
| ASSERT(string.find('\n') == notFound); |
| |
| Vector<String> tabList; |
| string.split('\t', true, tabList); |
| String tabText = emptyString(); |
| 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), ASSERT_NO_EXCEPTION); |
| tabText = emptyString(); |
| } |
| RefPtr<Node> textNode = document->createTextNode(stringWithRebalancedWhitespace(s, first, i + 1 == numEntries)); |
| paragraph->appendChild(textNode.release(), ASSERT_NO_EXCEPTION); |
| } |
| |
| // 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), ASSERT_NO_EXCEPTION); |
| |
| first = false; |
| } |
| } |
| |
| bool isPlainTextMarkup(Node *node) |
| { |
| if (!node->isElementNode() || !node->hasTagName(divTag) || toElement(node)->hasAttributes()) |
| return false; |
| |
| if (node->childNodeCount() == 1 && (node->firstChild()->isTextNode() || (node->firstChild()->firstChild()))) |
| return true; |
| |
| return (node->childNodeCount() == 2 && isTabSpanTextNode(node->firstChild()->firstChild()) && node->firstChild()->nextSibling()->isTextNode()); |
| } |
| |
| PassRefPtr<DocumentFragment> createFragmentFromText(Range* context, const String& text) |
| { |
| if (!context) |
| return 0; |
| |
| Node* styleNode = context->firstNode(); |
| if (!styleNode) { |
| styleNode = context->startPosition().deprecatedNode(); |
| if (!styleNode) |
| return 0; |
| } |
| |
| Document* document = styleNode->document(); |
| RefPtr<DocumentFragment> fragment = document->createDocumentFragment(); |
| |
| if (text.isEmpty()) |
| return fragment.release(); |
| |
| String string = text; |
| string.replace("\r\n", "\n"); |
| string.replace('\r', '\n'); |
| |
| RenderObject* renderer = styleNode->renderer(); |
| if (renderer && renderer->style()->preserveNewline()) { |
| fragment->appendChild(document->createTextNode(string), ASSERT_NO_EXCEPTION); |
| if (string.endsWith('\n')) { |
| RefPtr<Element> element = createBreakElement(document); |
| element->setAttribute(classAttr, AppleInterchangeNewline); |
| fragment->appendChild(element.release(), ASSERT_NO_EXCEPTION); |
| } |
| return fragment.release(); |
| } |
| |
| // A string with no newlines gets added inline, rather than being put into a paragraph. |
| if (string.find('\n') == notFound) { |
| fillContainerFromString(fragment.get(), string); |
| return fragment.release(); |
| } |
| |
| // Break string into paragraphs. Extra line breaks turn into empty paragraphs. |
| Node* blockNode = enclosingBlock(context->firstNode()); |
| Element* block = toElement(blockNode); |
| bool useClonesOfEnclosingBlock = blockNode |
| && blockNode->isElementNode() |
| && !block->hasTagName(bodyTag) |
| && !block->hasTagName(htmlTag) |
| && block != editableRootForPosition(context->startPosition()); |
| bool useLineBreak = enclosingTextFormControl(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]; |
| |
| RefPtr<Element> element; |
| if (s.isEmpty() && i + 1 == numLines) { |
| // For last line, use the "magic BR" rather than a P. |
| element = createBreakElement(document); |
| element->setAttribute(classAttr, AppleInterchangeNewline); |
| } else if (useLineBreak) { |
| element = createBreakElement(document); |
| fillContainerFromString(fragment.get(), s); |
| } else { |
| if (useClonesOfEnclosingBlock) |
| element = block->cloneElementWithoutChildren(); |
| else |
| element = createDefaultParagraphElement(document); |
| fillContainerFromString(element.get(), s); |
| } |
| fragment->appendChild(element.release(), ASSERT_NO_EXCEPTION); |
| } |
| return fragment.release(); |
| } |
| |
| PassRefPtr<DocumentFragment> createFragmentFromNodes(Document *document, const Vector<Node*>& nodes) |
| { |
| if (!document) |
| return 0; |
| |
| #if ENABLE(DELETION_UI) |
| // disable the delete button so it's elements are not serialized into the markup |
| DeleteButtonControllerDisableScope(document->frame()); |
| #endif |
| |
| RefPtr<DocumentFragment> fragment = document->createDocumentFragment(); |
| |
| size_t size = nodes.size(); |
| for (size_t i = 0; i < size; ++i) { |
| RefPtr<Element> element = createDefaultParagraphElement(document); |
| element->appendChild(nodes[i], ASSERT_NO_EXCEPTION); |
| fragment->appendChild(element.release(), ASSERT_NO_EXCEPTION); |
| } |
| |
| return fragment.release(); |
| } |
| |
| String createFullMarkup(const Node* node) |
| { |
| if (!node) |
| return String(); |
| |
| Document* document = node->document(); |
| if (!document) |
| return String(); |
| |
| Frame* frame = document->frame(); |
| if (!frame) |
| return String(); |
| |
| // FIXME: This is never "for interchange". Is that right? |
| String markupString = createMarkup(node, IncludeNode, 0); |
| Node::NodeType nodeType = node->nodeType(); |
| if (nodeType != Node::DOCUMENT_NODE && nodeType != Node::DOCUMENT_TYPE_NODE) |
| markupString = frame->documentTypeString() + markupString; |
| |
| return markupString; |
| } |
| |
| String createFullMarkup(const Range* range) |
| { |
| if (!range) |
| return String(); |
| |
| Node* node = range->startContainer(); |
| if (!node) |
| return String(); |
| |
| Document* document = node->document(); |
| if (!document) |
| return String(); |
| |
| Frame* frame = document->frame(); |
| if (!frame) |
| return String(); |
| |
| // FIXME: This is always "for interchange". Is that right? See the previous method. |
| return frame->documentTypeString() + createMarkup(range, 0, AnnotateForInterchange); |
| } |
| |
| String urlToMarkup(const KURL& url, const String& title) |
| { |
| StringBuilder markup; |
| markup.append("<a href=\""); |
| markup.append(url.string()); |
| markup.append("\">"); |
| MarkupAccumulator::appendCharactersReplacingEntities(markup, title, 0, title.length(), EntityMaskInPCDATA); |
| markup.append("</a>"); |
| return markup.toString(); |
| } |
| |
| PassRefPtr<DocumentFragment> createFragmentForInnerOuterHTML(const String& markup, Element* contextElement, ParserContentPolicy parserContentPolicy, ExceptionCode& ec) |
| { |
| Document* document = contextElement->document(); |
| #if ENABLE(TEMPLATE_ELEMENT) |
| if (contextElement->hasTagName(templateTag)) |
| document = document->ensureTemplateDocument(); |
| #endif |
| RefPtr<DocumentFragment> fragment = DocumentFragment::create(document); |
| |
| if (document->isHTMLDocument()) { |
| fragment->parseHTML(markup, contextElement, parserContentPolicy); |
| return fragment; |
| } |
| |
| bool wasValid = fragment->parseXML(markup, contextElement, parserContentPolicy); |
| if (!wasValid) { |
| ec = SYNTAX_ERR; |
| return 0; |
| } |
| return fragment.release(); |
| } |
| |
| PassRefPtr<DocumentFragment> createFragmentForTransformToFragment(const String& sourceString, const String& sourceMIMEType, Document* outputDoc) |
| { |
| RefPtr<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. |
| RefPtr<HTMLBodyElement> fakeBody = HTMLBodyElement::create(outputDoc); |
| fragment->parseHTML(sourceString, fakeBody.get()); |
| } else if (sourceMIMEType == "text/plain") |
| fragment->parserAppendChild(Text::create(outputDoc, sourceString)); |
| else { |
| bool successfulParse = fragment->parseXML(sourceString, 0); |
| if (!successfulParse) |
| return 0; |
| } |
| |
| // FIXME: Do we need to mess with URLs here? |
| |
| return fragment.release(); |
| } |
| |
| static inline void removeElementPreservingChildren(PassRefPtr<DocumentFragment> fragment, HTMLElement* element) |
| { |
| RefPtr<Node> nextChild; |
| for (RefPtr<Node> child = element->firstChild(); child; child = nextChild) { |
| nextChild = child->nextSibling(); |
| element->removeChild(child.get(), ASSERT_NO_EXCEPTION); |
| fragment->insertBefore(child, element, ASSERT_NO_EXCEPTION); |
| } |
| fragment->removeChild(element, ASSERT_NO_EXCEPTION); |
| } |
| |
| PassRefPtr<DocumentFragment> createContextualFragment(const String& markup, HTMLElement* element, ParserContentPolicy parserContentPolicy, ExceptionCode& ec) |
| { |
| ASSERT(element); |
| if (element->ieForbidsInsertHTML()) { |
| ec = NOT_SUPPORTED_ERR; |
| return 0; |
| } |
| |
| if (element->hasLocalName(colTag) || element->hasLocalName(colgroupTag) || element->hasLocalName(framesetTag) |
| || element->hasLocalName(headTag) || element->hasLocalName(styleTag) || element->hasLocalName(titleTag)) { |
| ec = NOT_SUPPORTED_ERR; |
| return 0; |
| } |
| |
| RefPtr<DocumentFragment> fragment = createFragmentForInnerOuterHTML(markup, element, parserContentPolicy, ec); |
| if (!fragment) |
| return 0; |
| |
| // 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. |
| |
| RefPtr<Node> nextNode; |
| for (RefPtr<Node> node = fragment->firstChild(); node; node = nextNode) { |
| nextNode = node->nextSibling(); |
| if (node->hasTagName(htmlTag) || node->hasTagName(headTag) || node->hasTagName(bodyTag)) { |
| HTMLElement* element = toHTMLElement(node.get()); |
| if (Node* firstChild = element->firstChild()) |
| nextNode = firstChild; |
| removeElementPreservingChildren(fragment, element); |
| } |
| } |
| return fragment.release(); |
| } |
| |
| static inline bool hasOneChild(ContainerNode* node) |
| { |
| Node* firstChild = node->firstChild(); |
| return firstChild && !firstChild->nextSibling(); |
| } |
| |
| static inline bool hasOneTextChild(ContainerNode* node) |
| { |
| return hasOneChild(node) && node->firstChild()->isTextNode(); |
| } |
| |
| void replaceChildrenWithFragment(ContainerNode* container, PassRefPtr<DocumentFragment> fragment, ExceptionCode& ec) |
| { |
| RefPtr<ContainerNode> containerNode(container); |
| |
| ChildListMutationScope mutation(containerNode.get()); |
| |
| if (!fragment->firstChild()) { |
| containerNode->removeChildren(); |
| return; |
| } |
| |
| if (hasOneTextChild(containerNode.get()) && hasOneTextChild(fragment.get())) { |
| toText(containerNode->firstChild())->setData(toText(fragment->firstChild())->data(), ec); |
| return; |
| } |
| |
| if (hasOneChild(containerNode.get())) { |
| containerNode->replaceChild(fragment, containerNode->firstChild(), ec); |
| return; |
| } |
| |
| containerNode->removeChildren(); |
| containerNode->appendChild(fragment, ec); |
| } |
| |
| void replaceChildrenWithText(ContainerNode* container, const String& text, ExceptionCode& ec) |
| { |
| RefPtr<ContainerNode> containerNode(container); |
| |
| ChildListMutationScope mutation(containerNode.get()); |
| |
| if (hasOneTextChild(containerNode.get())) { |
| toText(containerNode->firstChild())->setData(text, ec); |
| return; |
| } |
| |
| RefPtr<Text> textNode = Text::create(containerNode->document(), text); |
| |
| if (hasOneChild(containerNode.get())) { |
| containerNode->replaceChild(textNode.release(), containerNode->firstChild(), ec); |
| return; |
| } |
| |
| containerNode->removeChildren(); |
| containerNode->appendChild(textNode.release(), ec); |
| } |
| |
| } |
