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/*
* 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 "CSSRule.h"
#include "CSSRuleList.h"
#include "CSSStyleRule.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 "DocumentType.h"
#include "Editor.h"
#include "ExceptionCode.h"
#include "ExceptionCodePlaceholder.h"
#include "Frame.h"
#include "HTMLBodyElement.h"
#include "HTMLElement.h"
#include "HTMLNames.h"
#include "HTMLTextFormControlElement.h"
#include "KURL.h"
#include "MarkupAccumulator.h"
#include "NodeTraversal.h"
#include "Range.h"
#include "RenderBlock.h"
#include "RenderObject.h"
#include "Settings.h"
#include "StylePropertySet.h"
#include "StyleResolver.h"
#include "TextIterator.h"
#include "VisibleSelection.h"
#include "VisibleUnits.h"
#include "XMLNSNames.h"
#include "htmlediting.h"
#include <wtf/StdLibExtras.h>
#include <wtf/text/StringBuilder.h>
#include <wtf/unicode/CharacterNames.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() && text->parentElement()->tagQName() == textareaTag;
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 && !table->hasTagName(tableTag))
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())->getIdent() == 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()) {
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)
{
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);
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);
}
}