Google Git
Sign in
ara-mdk / platform / external / webkit / 5abb8606fa57c3ebfc8b3c3dbc3fa4a25d2ae306 / . / WebCore / editing / markup.cpp
blob: d4996ea17022ede301eda5019a4a99a353c7b23f [file] [log] [blame]
/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "markup.h"
#include "ApplyStyleCommand.h"
#include "CDATASection.h"
#include "CharacterNames.h"
#include "Comment.h"
#include "CSSComputedStyleDeclaration.h"
#include "CSSMutableStyleDeclaration.h"
#include "CSSPrimitiveValue.h"
#include "CSSProperty.h"
#include "CSSPropertyNames.h"
#include "CSSRule.h"
#include "CSSRuleList.h"
#include "CSSStyleRule.h"
#include "CSSStyleSelector.h"
#include "CSSValue.h"
#include "CSSValueKeywords.h"
#include "DeleteButtonController.h"
#include "DocumentFragment.h"
#include "DocumentType.h"
#include "Editor.h"
#include "Frame.h"
#include "HTMLBodyElement.h"
#include "HTMLElement.h"
#include "HTMLNames.h"
#include "InlineTextBox.h"
#include "KURL.h"
#include "Logging.h"
#include "ProcessingInstruction.h"
#include "Range.h"
#include "TextIterator.h"
#include "VisibleSelection.h"
#include "XMLNSNames.h"
#include "htmlediting.h"
#include "visible_units.h"
#include <wtf/StdLibExtras.h>
using namespace std;
namespace WebCore {
using namespace HTMLNames;
static bool propertyMissingOrEqualToNone(CSSStyleDeclaration*, int propertyID);
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;
};
enum EntityMask {
EntityNone = 0x0000,
EntityAmp = 0x0001,
EntityLt = 0x0002,
EntityGt = 0x0004,
EntityQuot = 0x0008,
EntityNbsp = 0x0010,
EntityMaskInCDATA = EntityNone,
EntityMaskInPCDATA = EntityAmp | EntityLt | EntityGt,
EntityMaskInHTMLPCDATA = EntityMaskInPCDATA | EntityNbsp,
EntityMaskInAttributeValue = EntityAmp | EntityLt | EntityGt | EntityQuot,
EntityMaskInHTMLAttributeValue = EntityMaskInAttributeValue | EntityNbsp,
};
struct EntityDescription {
UChar entity;
const String& reference;
EntityMask mask;
};
static void appendCharactersReplacingEntities(Vector<UChar>& out, const UChar* content, size_t length, EntityMask entityMask)
{
DEFINE_STATIC_LOCAL(const String, ampReference, ("&amp;"));
DEFINE_STATIC_LOCAL(const String, ltReference, ("&lt;"));
DEFINE_STATIC_LOCAL(const String, gtReference, ("&gt;"));
DEFINE_STATIC_LOCAL(const String, quotReference, ("&quot;"));
DEFINE_STATIC_LOCAL(const String, nbspReference, ("&nbsp;"));
static const EntityDescription entityMaps[] = {
{ '&', ampReference, EntityAmp },
{ '<', ltReference, EntityLt },
{ '>', gtReference, EntityGt },
{ '"', quotReference, EntityQuot },
{ noBreakSpace, nbspReference, EntityNbsp },
};
size_t positionAfterLastEntity = 0;
for (size_t i = 0; i < length; i++) {
for (size_t m = 0; m < sizeof(entityMaps) / sizeof(EntityDescription); m++) {
if (content[i] == entityMaps[m].entity && entityMaps[m].mask & entityMask) {
out.append(content + positionAfterLastEntity, i - positionAfterLastEntity);
append(out, entityMaps[m].reference);
positionAfterLastEntity = i + 1;
break;
}
}
}
out.append(content + positionAfterLastEntity, length - positionAfterLastEntity);
}
typedef HashMap<AtomicStringImpl*, AtomicStringImpl*> Namespaces;
class MarkupAccumulator {
public:
MarkupAccumulator(Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs, const Range* range = 0)
: m_nodes(nodes)
, m_range(range)
, m_shouldResolveURLs(shouldResolveURLs)
{
}
virtual ~MarkupAccumulator() {}
void appendString(const String&);
void appendStartTag(Node*, Namespaces* = 0);
void appendEndTag(Node*);
virtual String takeResults();
protected:
void appendAttributeValue(Vector<UChar>& result, const String& attribute, bool documentIsHTML);
void appendQuotedURLAttributeValue(Vector<UChar>& result, const String& urlString);
void appendNodeValue(Vector<UChar>& out, const Node*, const Range*, EntityMask);
bool shouldAddNamespaceElement(const Element*);
bool shouldAddNamespaceAttribute(const Attribute&, Namespaces&);
void appendNamespace(Vector<UChar>& result, const AtomicString& prefix, const AtomicString& namespaceURI, Namespaces&);
EntityMask entityMaskForText(Text* text) const;
virtual void appendText(Vector<UChar>& out, Text*);
void appendComment(Vector<UChar>& out, const String& comment);
void appendDocumentType(Vector<UChar>& result, const DocumentType*);
void appendProcessingInstruction(Vector<UChar>& out, const String& target, const String& data);
virtual void appendElement(Vector<UChar>& out, Element*, Namespaces*);
void appendOpenTag(Vector<UChar>& out, Element* element, Namespaces*);
void appendCloseTag(Vector<UChar>& out, Element* element);
void appendAttribute(Vector<UChar>& out, Element* element, const Attribute&, Namespaces*);
void appendCDATASection(Vector<UChar>& out, const String& section);
void appendStartMarkup(Vector<UChar>& result, const Node*, Namespaces*);
bool shouldSelfClose(const Node*);
void appendEndMarkup(Vector<UChar>& result, const Node*);
bool shouldResolveURLs() { return m_shouldResolveURLs == AbsoluteURLs; }
Vector<Node*>* const m_nodes;
const Range* const m_range;
Vector<String> m_succeedingMarkup;
private:
const bool m_shouldResolveURLs;
};
class StyledMarkupAccumulator : public MarkupAccumulator {
public:
enum RangeFullySelectsNode { DoesFullySelectNode, DoesNotFullySelectNode };
StyledMarkupAccumulator(Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs, EAnnotateForInterchange shouldAnnotate, const Range* range)
: MarkupAccumulator(nodes, shouldResolveURLs, range)
, m_shouldAnnotate(shouldAnnotate)
{
}
void wrapWithNode(Node*, bool convertBlocksToInlines = false, RangeFullySelectsNode = DoesFullySelectNode);
void wrapWithStyleNode(CSSStyleDeclaration*, Document*, bool isBlock = false);
String takeResults();
protected:
virtual void appendText(Vector<UChar>& out, Text*);
String renderedText(const Node*, const Range*);
String stringValueForRange(const Node*, const Range*);
void removeExteriorStyles(CSSMutableStyleDeclaration*);
void appendElement(Vector<UChar>& out, Element* element, bool addDisplayInline, RangeFullySelectsNode);
void appendElement(Vector<UChar>& out, Element* element, Namespaces*) { appendElement(out, element, false, DoesFullySelectNode); }
bool shouldAnnotate() { return m_shouldAnnotate == AnnotateForInterchange; }
private:
Vector<String> m_reversedPrecedingMarkup;
const EAnnotateForInterchange m_shouldAnnotate;
};
void MarkupAccumulator::appendString(const String& string)
{
m_succeedingMarkup.append(string);
}
void MarkupAccumulator::appendStartTag(Node* node, Namespaces* namespaces)
{
Vector<UChar> markup;
appendStartMarkup(markup, node, namespaces);
m_succeedingMarkup.append(String::adopt(markup));
if (m_nodes)
m_nodes->append(node);
}
void MarkupAccumulator::appendEndTag(Node* node)
{
Vector<UChar> markup;
appendEndMarkup(markup, node);
m_succeedingMarkup.append(String::adopt(markup));
}
void StyledMarkupAccumulator::wrapWithNode(Node* node, bool convertBlocksToInlines, RangeFullySelectsNode rangeFullySelectsNode)
{
Vector<UChar> markup;
if (node->isElementNode())
appendElement(markup, static_cast<Element*>(node), convertBlocksToInlines && isBlock(const_cast<Node*>(node)), rangeFullySelectsNode);
else
appendStartMarkup(markup, node, 0);
m_reversedPrecedingMarkup.append(String::adopt(markup));
appendEndTag(node);
if (m_nodes)
m_nodes->append(node);
}
void StyledMarkupAccumulator::wrapWithStyleNode(CSSStyleDeclaration* style, Document* document, bool isBlock)
{
// All text-decoration-related elements should have been treated as special ancestors
// If we ever hit this ASSERT, we should export StyleChange in ApplyStyleCommand and use it here
ASSERT(propertyMissingOrEqualToNone(style, CSSPropertyTextDecoration) && propertyMissingOrEqualToNone(style, CSSPropertyWebkitTextDecorationsInEffect));
DEFINE_STATIC_LOCAL(const String, divStyle, ("<div style=\""));
DEFINE_STATIC_LOCAL(const String, divClose, ("</div>"));
DEFINE_STATIC_LOCAL(const String, styleSpanOpen, ("<span class=\"" AppleStyleSpanClass "\" style=\""));
DEFINE_STATIC_LOCAL(const String, styleSpanClose, ("</span>"));
Vector<UChar> openTag;
append(openTag, isBlock ? divStyle : styleSpanOpen);
appendAttributeValue(openTag, style->cssText(), document->isHTMLDocument());
openTag.append('\"');
openTag.append('>');
m_reversedPrecedingMarkup.append(String::adopt(openTag));
m_succeedingMarkup.append(isBlock ? divClose : styleSpanClose);
}
// FIXME: This is a very inefficient way of accumulating the markup.
// We're converting results of appendStartMarkup and appendEndMarkup from Vector<UChar> to String
// and then back to Vector<UChar> and again to String here.
String MarkupAccumulator::takeResults()
{
size_t length = 0;
size_t postCount = m_succeedingMarkup.size();
for (size_t i = 0; i < postCount; ++i)
length += m_succeedingMarkup[i].length();
Vector<UChar> result;
result.reserveInitialCapacity(length);
for (size_t i = 0; i < postCount; ++i)
append(result, m_succeedingMarkup[i]);
return String::adopt(result);
}
String StyledMarkupAccumulator::takeResults()
{
size_t length = 0;
size_t preCount = m_reversedPrecedingMarkup.size();
for (size_t i = 0; i < preCount; ++i)
length += m_reversedPrecedingMarkup[i].length();
size_t postCount = m_succeedingMarkup.size();
for (size_t i = 0; i < postCount; ++i)
length += m_succeedingMarkup[i].length();
Vector<UChar> result;
result.reserveInitialCapacity(length);
for (size_t i = preCount; i > 0; --i)
append(result, m_reversedPrecedingMarkup[i - 1]);
for (size_t i = 0; i < postCount; ++i)
append(result, m_succeedingMarkup[i]);
return String::adopt(result);
}
void MarkupAccumulator::appendAttributeValue(Vector<UChar>& result, const String& attribute, bool documentIsHTML)
{
appendCharactersReplacingEntities(result, attribute.characters(), attribute.length(),
documentIsHTML ? EntityMaskInHTMLAttributeValue : EntityMaskInAttributeValue);
}
void MarkupAccumulator::appendQuotedURLAttributeValue(Vector<UChar>& result, const String& urlString)
{
UChar quoteChar = '\"';
String strippedURLString = urlString.stripWhiteSpace();
if (protocolIsJavaScript(strippedURLString)) {
// minimal escaping for javascript urls
if (strippedURLString.contains('"')) {
if (strippedURLString.contains('\''))
strippedURLString.replace('\"', "&quot;");
else
quoteChar = '\'';
}
result.append(quoteChar);
append(result, strippedURLString);
result.append(quoteChar);
return;
}
// FIXME: This does not fully match other browsers. Firefox percent-escapes non-ASCII characters for innerHTML.
result.append(quoteChar);
appendAttributeValue(result, urlString, false);
result.append(quoteChar);
}
String StyledMarkupAccumulator::stringValueForRange(const Node* node, const Range* range)
{
if (!range)
return node->nodeValue();
String str = node->nodeValue();
ExceptionCode ec;
if (node == range->endContainer(ec))
str.truncate(range->endOffset(ec));
if (node == range->startContainer(ec))
str.remove(0, range->startOffset(ec));
return str;
}
void MarkupAccumulator::appendNodeValue(Vector<UChar>& out, const Node* node, const Range* range, EntityMask entityMask)
{
String str = node->nodeValue();
const UChar* characters = str.characters();
size_t length = str.length();
if (range) {
ExceptionCode ec;
if (node == range->endContainer(ec))
length = range->endOffset(ec);
if (node == range->startContainer(ec)) {
size_t start = range->startOffset(ec);
characters += start;
length -= start;
}
}
appendCharactersReplacingEntities(out, characters, length, entityMask);
}
String StyledMarkupAccumulator::renderedText(const Node* node, const Range* range)
{
if (!node->isTextNode())
return String();
ExceptionCode ec;
const Text* textNode = static_cast<const Text*>(node);
unsigned startOffset = 0;
unsigned endOffset = textNode->length();
if (range && node == range->startContainer(ec))
startOffset = range->startOffset(ec);
if (range && node == range->endContainer(ec))
endOffset = range->endOffset(ec);
Position start(const_cast<Node*>(node), startOffset);
Position end(const_cast<Node*>(node), endOffset);
return plainText(Range::create(node->document(), start, end).get());
}
static PassRefPtr<CSSMutableStyleDeclaration> styleFromMatchedRulesForElement(Element* element, bool authorOnly = true)
{
RefPtr<CSSMutableStyleDeclaration> style = CSSMutableStyleDeclaration::create();
RefPtr<CSSRuleList> matchedRules = element->document()->styleSelector()->styleRulesForElement(element, authorOnly);
if (matchedRules) {
for (unsigned i = 0; i < matchedRules->length(); i++) {
if (matchedRules->item(i)->type() == CSSRule::STYLE_RULE) {
RefPtr<CSSMutableStyleDeclaration> s = static_cast<CSSStyleRule*>(matchedRules->item(i))->style();
style->merge(s.get(), true);
}
}
}
return style.release();
}
static void removeEnclosingMailBlockquoteStyle(CSSMutableStyleDeclaration* style, Node* node)
{
Node* blockquote = nearestMailBlockquote(node);
if (!blockquote || !blockquote->parentNode())
return;
removeStylesAddedByNode(style, blockquote);
}
static void removeDefaultStyles(CSSMutableStyleDeclaration* style, Document* document)
{
if (!document || !document->documentElement())
return;
prepareEditingStyleToApplyAt(style, Position(document->documentElement(), 0));
}
bool MarkupAccumulator::shouldAddNamespaceElement(const Element* element)
{
// Don't add namespace attribute if it is already defined for this elem.
const AtomicString& prefix = element->prefix();
AtomicString attr = !prefix.isEmpty() ? "xmlns:" + prefix : "xmlns";
return !element->hasAttribute(attr);
}
bool MarkupAccumulator::shouldAddNamespaceAttribute(const Attribute& attribute, Namespaces& namespaces)
{
namespaces.checkConsistency();
// Don't add namespace attributes twice
if (attribute.name() == XMLNSNames::xmlnsAttr) {
namespaces.set(emptyAtom.impl(), attribute.value().impl());
return false;
}
QualifiedName xmlnsPrefixAttr(xmlnsAtom, attribute.localName(), XMLNSNames::xmlnsNamespaceURI);
if (attribute.name() == xmlnsPrefixAttr) {
namespaces.set(attribute.localName().impl(), attribute.value().impl());
return false;
}
return true;
}
void MarkupAccumulator::appendNamespace(Vector<UChar>& result, const AtomicString& prefix, const AtomicString& namespaceURI, Namespaces& namespaces)
{
namespaces.checkConsistency();
if (namespaceURI.isEmpty())
return;
// Use emptyAtoms's impl() for both null and empty strings since the HashMap can't handle 0 as a key
AtomicStringImpl* pre = prefix.isEmpty() ? emptyAtom.impl() : prefix.impl();
AtomicStringImpl* foundNS = namespaces.get(pre);
if (foundNS != namespaceURI.impl()) {
namespaces.set(pre, namespaceURI.impl());
result.append(' ');
append(result, xmlnsAtom.string());
if (!prefix.isEmpty()) {
result.append(':');
append(result, prefix);
}
result.append('=');
result.append('"');
appendAttributeValue(result, namespaceURI, false);
result.append('"');
}
}
EntityMask MarkupAccumulator::entityMaskForText(Text* text) const
{
const QualifiedName* parentName = 0;
if (text->parentElement())
parentName = &static_cast<Element*>(text->parentElement())->tagQName();
if (parentName && (*parentName == scriptTag || *parentName == styleTag || *parentName == xmpTag))
return EntityMaskInCDATA;
return text->document()->isHTMLDocument() ? EntityMaskInHTMLPCDATA : EntityMaskInPCDATA;
}
void MarkupAccumulator::appendText(Vector<UChar>& out, Text* text)
{
appendNodeValue(out, text, m_range, entityMaskForText(text));
}
void StyledMarkupAccumulator::appendText(Vector<UChar>& out, Text* text)
{
if (!shouldAnnotate() || (text->parentElement() && text->parentElement()->tagQName() == textareaTag)) {
MarkupAccumulator::appendText(out, text);
return;
}
bool useRenderedText = !enclosingNodeWithTag(Position(text, 0), selectTag);
String content = useRenderedText ? renderedText(text, m_range) : stringValueForRange(text, m_range);
Vector<UChar> buffer;
appendCharactersReplacingEntities(buffer, content.characters(), content.length(), EntityMaskInPCDATA);
append(out, convertHTMLTextToInterchangeFormat(String::adopt(buffer), text));
}
void MarkupAccumulator::appendComment(Vector<UChar>& out, const String& comment)
{
// FIXME: Comment content is not escaped, but XMLSerializer (and possibly other callers) should raise an exception if it includes "-->".
append(out, "<!--");
append(out, comment);
append(out, "-->");
}
void MarkupAccumulator::appendDocumentType(Vector<UChar>& result, const DocumentType* n)
{
if (n->name().isEmpty())
return;
append(result, "<!DOCTYPE ");
append(result, n->name());
if (!n->publicId().isEmpty()) {
append(result, " PUBLIC \"");
append(result, n->publicId());
append(result, "\"");
if (!n->systemId().isEmpty()) {
append(result, " \"");
append(result, n->systemId());
append(result, "\"");
}
} else if (!n->systemId().isEmpty()) {
append(result, " SYSTEM \"");
append(result, n->systemId());
append(result, "\"");
}
if (!n->internalSubset().isEmpty()) {
append(result, " [");
append(result, n->internalSubset());
append(result, "]");
}
append(result, ">");
}
void MarkupAccumulator::appendProcessingInstruction(Vector<UChar>& out, const String& target, const String& data)
{
// FIXME: PI data is not escaped, but XMLSerializer (and possibly other callers) this should raise an exception if it includes "?>".
append(out, "<?");
append(out, target);
append(out, " ");
append(out, data);
append(out, "?>");
}
void StyledMarkupAccumulator::removeExteriorStyles(CSSMutableStyleDeclaration* style)
{
style->removeProperty(CSSPropertyFloat);
}
void MarkupAccumulator::appendElement(Vector<UChar>& out, Element* element, Namespaces* namespaces)
{
appendOpenTag(out, element, namespaces);
NamedNodeMap* attributes = element->attributes();
unsigned length = attributes->length();
for (unsigned int i = 0; i < length; i++)
appendAttribute(out, element, *attributes->attributeItem(i), namespaces);
appendCloseTag(out, element);
}
void StyledMarkupAccumulator::appendElement(Vector<UChar>& out, Element* element, bool addDisplayInline, RangeFullySelectsNode rangeFullySelectsNode)
{
bool documentIsHTML = element->document()->isHTMLDocument();
appendOpenTag(out, element, 0);
NamedNodeMap* attributes = element->attributes();
unsigned length = attributes->length();
for (unsigned int i = 0; i < length; i++) {
Attribute* attribute = attributes->attributeItem(i);
// We'll handle the style attribute separately, below.
if (attribute->name() == styleAttr && element->isHTMLElement() && (shouldAnnotate() || addDisplayInline))
continue;
appendAttribute(out, element, *attribute, 0);
}
if (element->isHTMLElement() && (shouldAnnotate() || addDisplayInline)) {
RefPtr<CSSMutableStyleDeclaration> style = static_cast<HTMLElement*>(element)->getInlineStyleDecl()->copy();
if (shouldAnnotate()) {
RefPtr<CSSMutableStyleDeclaration> styleFromMatchedRules = styleFromMatchedRulesForElement(const_cast<Element*>(element));
// Styles from the inline style declaration, held in the variable "style", take precedence
// over those from matched rules.
styleFromMatchedRules->merge(style.get());
style = styleFromMatchedRules;
RefPtr<CSSComputedStyleDeclaration> computedStyleForElement = computedStyle(element);
RefPtr<CSSMutableStyleDeclaration> fromComputedStyle = CSSMutableStyleDeclaration::create();
{
CSSMutableStyleDeclaration::const_iterator end = style->end();
for (CSSMutableStyleDeclaration::const_iterator it = style->begin(); it != end; ++it) {
const CSSProperty& property = *it;
CSSValue* value = property.value();
// The property value, if it's a percentage, may not reflect the actual computed value.
// For example: style="height: 1%; overflow: visible;" in quirksmode
// FIXME: There are others like this, see <rdar://problem/5195123> Slashdot copy/paste fidelity problem
if (value->cssValueType() == CSSValue::CSS_PRIMITIVE_VALUE)
if (static_cast<CSSPrimitiveValue*>(value)->primitiveType() == CSSPrimitiveValue::CSS_PERCENTAGE)
if (RefPtr<CSSValue> computedPropertyValue = computedStyleForElement->getPropertyCSSValue(property.id()))
fromComputedStyle->addParsedProperty(CSSProperty(property.id(), computedPropertyValue));
}
}
style->merge(fromComputedStyle.get());
}
if (addDisplayInline)
style->setProperty(CSSPropertyDisplay, CSSValueInline, true);
// 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)
removeExteriorStyles(style.get());
if (style->length() > 0) {
DEFINE_STATIC_LOCAL(const String, stylePrefix, (" style=\""));
append(out, stylePrefix);
appendAttributeValue(out, style->cssText(), documentIsHTML);
out.append('\"');
}
}
appendCloseTag(out, element);
}
void MarkupAccumulator::appendOpenTag(Vector<UChar>& out, Element* element, Namespaces* namespaces)
{
out.append('<');
append(out, element->nodeNamePreservingCase());
if (!element->document()->isHTMLDocument() && namespaces && shouldAddNamespaceElement(element))
appendNamespace(out, element->prefix(), element->namespaceURI(), *namespaces);
}
void MarkupAccumulator::appendCloseTag(Vector<UChar>& out, Element* element)
{
if (shouldSelfClose(element)) {
if (element->isHTMLElement())
out.append(' '); // XHTML 1.0 <-> HTML compatibility.
out.append('/');
}
out.append('>');
}
void MarkupAccumulator::appendAttribute(Vector<UChar>& out, Element* element, const Attribute& attribute, Namespaces* namespaces)
{
bool documentIsHTML = element->document()->isHTMLDocument();
out.append(' ');
if (documentIsHTML)
append(out, attribute.name().localName());
else
append(out, attribute.name().toString());
out.append('=');
if (element->isURLAttribute(const_cast<Attribute*>(&attribute))) {
// We don't want to complete file:/// URLs because it may contain sensitive information
// about the user's system.
if (shouldResolveURLs() && !element->document()->url().isLocalFile())
appendQuotedURLAttributeValue(out, element->document()->completeURL(attribute.value()).string());
else
appendQuotedURLAttributeValue(out, attribute.value());
} else {
out.append('\"');
appendAttributeValue(out, attribute.value(), documentIsHTML);
out.append('\"');
}
if (!documentIsHTML && namespaces && shouldAddNamespaceAttribute(attribute, *namespaces))
appendNamespace(out, attribute.prefix(), attribute.namespaceURI(), *namespaces);
}
void MarkupAccumulator::appendCDATASection(Vector<UChar>& out, const String& section)
{
// FIXME: CDATA content is not escaped, but XMLSerializer (and possibly other callers) should raise an exception if it includes "]]>".
append(out, "<![CDATA[");
append(out, section);
append(out, "]]>");
}
void MarkupAccumulator::appendStartMarkup(Vector<UChar>& result, const Node* node, Namespaces* namespaces)
{
if (namespaces)
namespaces->checkConsistency();
switch (node->nodeType()) {
case Node::TEXT_NODE:
appendText(result, static_cast<Text*>(const_cast<Node*>(node)));
break;
case Node::COMMENT_NODE:
appendComment(result, static_cast<const Comment*>(node)->data());
break;
case Node::DOCUMENT_NODE:
case Node::DOCUMENT_FRAGMENT_NODE:
break;
case Node::DOCUMENT_TYPE_NODE:
appendDocumentType(result, static_cast<const DocumentType*>(node));
break;
case Node::PROCESSING_INSTRUCTION_NODE:
appendProcessingInstruction(result, static_cast<const ProcessingInstruction*>(node)->target(), static_cast<const ProcessingInstruction*>(node)->data());
break;
case Node::ELEMENT_NODE:
appendElement(result, static_cast<Element*>(const_cast<Node*>(node)), namespaces);
break;
case Node::CDATA_SECTION_NODE:
appendCDATASection(result, static_cast<const CDATASection*>(node)->data());
break;
case Node::ATTRIBUTE_NODE:
case Node::ENTITY_NODE:
case Node::ENTITY_REFERENCE_NODE:
case Node::NOTATION_NODE:
case Node::XPATH_NAMESPACE_NODE:
ASSERT_NOT_REACHED();
break;
}
}
static inline bool elementCannotHaveEndTag(const Node *node)
{
if (!node->isHTMLElement())
return false;
// FIXME: ieForbidsInsertHTML may not be the right function to call here
// ieForbidsInsertHTML is used to disallow setting innerHTML/outerHTML
// or createContextualFragment. It does not necessarily align with
// which elements should be serialized w/o end tags.
return static_cast<const HTMLElement*>(node)->ieForbidsInsertHTML();
}
// Rules of self-closure
// 1. No elements in HTML documents use the self-closing syntax.
// 2. Elements w/ children never self-close because they use a separate end tag.
// 3. HTML elements which do not have a "forbidden" end tag will close with a separate end tag.
// 4. Other elements self-close.
bool MarkupAccumulator::shouldSelfClose(const Node* node)
{
if (node->document()->isHTMLDocument())
return false;
if (node->hasChildNodes())
return false;
if (node->isHTMLElement() && !elementCannotHaveEndTag(node))
return false;
return true;
}
void MarkupAccumulator::appendEndMarkup(Vector<UChar>& result, const Node* node)
{
if (!node->isElementNode() || shouldSelfClose(node) || (!node->hasChildNodes() && elementCannotHaveEndTag(node)))
return;
result.append('<');
result.append('/');
append(result, static_cast<const Element*>(node)->nodeNamePreservingCase());
result.append('>');
}
static void completeURLs(Node* node, const String& baseURL)
{
Vector<AttributeChange> changes;
KURL parsedBaseURL(ParsedURLString, baseURL);
Node* end = node->traverseNextSibling();
for (Node* n = node; n != end; n = n->traverseNextNode()) {
if (n->isElementNode()) {
Element* e = static_cast<Element*>(n);
NamedNodeMap* attributes = e->attributes();
unsigned length = attributes->length();
for (unsigned i = 0; i < length; i++) {
Attribute* attribute = attributes->attributeItem(i);
if (e->isURLAttribute(attribute))
changes.append(AttributeChange(e, attribute->name(), KURL(parsedBaseURL, attribute->value()).string()));
}
}
}
size_t numChanges = changes.size();
for (size_t i = 0; i < numChanges; ++i)
changes[i].apply();
}
static bool needInterchangeNewlineAfter(const VisiblePosition& v)
{
VisiblePosition next = v.next();
Node* upstreamNode = next.deepEquivalent().upstream().node();
Node* downstreamNode = v.deepEquivalent().downstream().node();
// 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<CSSMutableStyleDeclaration> 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<CSSMutableStyleDeclaration> style = styleFromMatchedRulesForElement(element);
RefPtr<CSSMutableStyleDeclaration> inlineStyleDecl = element->getInlineStyleDecl();
style->merge(inlineStyleDecl.get());
return style.release();
}
static Node* serializeNodes(StyledMarkupAccumulator& accumulator, Node* startNode, Node* pastEnd)
{
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 = n->traverseNextNode();
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(Position(n, 0), selectTag)) {
next = n->traverseNextSibling();
// 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
accumulator.appendStartTag(n);
// If node has no children, close the tag now.
if (!n->childNodeCount()) {
accumulator.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.
accumulator.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.
Node* nextParent = next ? next->parentNode() : 0;
if (next != pastEnd && n != nextParent) {
Node* lastAncestorClosedOrSelf = n->isDescendantOf(lastClosed) ? lastClosed : n;
for (Node *parent = lastAncestorClosedOrSelf->parent(); 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));
accumulator.wrapWithNode(parent);
lastClosed = parent;
}
}
}
}
return lastClosed;
}
static Node* ancestorToRetainStructureAndAppearance(Node* commonAncestor)
{
Node* commonAncestorBlock = enclosingBlock(commonAncestor);
if (commonAncestorBlock->hasTagName(tbodyTag) || commonAncestorBlock->hasTagName(trTag)) {
Node* table = commonAncestorBlock->parentNode();
while (table && !table->hasTagName(tableTag))
table = table->parentNode();
return table;
}
if (commonAncestorBlock->hasTagName(listingTag)
|| commonAncestorBlock->hasTagName(olTag)
|| commonAncestorBlock->hasTagName(preTag)
|| commonAncestorBlock->hasTagName(tableTag)
|| commonAncestorBlock->hasTagName(ulTag)
|| commonAncestorBlock->hasTagName(xmpTag)
|| commonAncestorBlock->hasTagName(h1Tag)
|| commonAncestorBlock->hasTagName(h2Tag)
|| commonAncestorBlock->hasTagName(h3Tag)
|| commonAncestorBlock->hasTagName(h4Tag)
|| commonAncestorBlock->hasTagName(h5Tag))
return commonAncestorBlock;
return 0;
}
static bool propertyMissingOrEqualToNone(CSSStyleDeclaration* style, int 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 isElementPresentational(const Node* node)
{
if (node->hasTagName(uTag) || node->hasTagName(sTag) || node->hasTagName(strikeTag)
|| node->hasTagName(iTag) || node->hasTagName(emTag) || node->hasTagName(bTag) || node->hasTagName(strongTag))
return true;
RefPtr<CSSMutableStyleDeclaration> style = styleFromMatchedRulesAndInlineDecl(node);
if (!style)
return false;
return !propertyMissingOrEqualToNone(style.get(), CSSPropertyTextDecoration);
}
static bool shouldIncludeWrapperForFullySelectedRoot(Node* fullySelectedRoot, CSSMutableStyleDeclaration* style)
{
if (fullySelectedRoot->isElementNode() && static_cast<Element*>(fullySelectedRoot)->hasAttribute(backgroundAttr))
return true;
return style->getPropertyCSSValue(CSSPropertyBackgroundImage) || style->getPropertyCSSValue(CSSPropertyBackgroundColor);
}
static Node* highestAncestorToWrapMarkup(const Range* range, Node* fullySelectedRoot, EAnnotateForInterchange shouldAnnotate)
{
ExceptionCode ec;
Node* commonAncestor = range->commonAncestorContainer(ec);
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);
// Retain the Mail quote level by including all ancestor mail block quotes.
for (Node* ancestor = range->firstNode(); ancestor; ancestor = ancestor->parentNode()) {
if (isMailBlockquote(ancestor))
specialCommonAncestor = ancestor;
}
}
Node* checkAncestor = specialCommonAncestor ? specialCommonAncestor : commonAncestor;
if (checkAncestor->renderer()) {
Node* newSpecialCommonAncestor = highestEnclosingNodeOfType(Position(checkAncestor, 0), &isElementPresentational);
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(Position(specialCommonAncestor ? specialCommonAncestor : commonAncestor, 0), aTag))
specialCommonAncestor = enclosingAnchor;
if (shouldAnnotate == AnnotateForInterchange && fullySelectedRoot) {
RefPtr<CSSMutableStyleDeclaration> fullySelectedRootStyle = styleFromMatchedRulesAndInlineDecl(fullySelectedRoot);
if (shouldIncludeWrapperForFullySelectedRoot(fullySelectedRoot, fullySelectedRootStyle.get()))
specialCommonAncestor = fullySelectedRoot;
}
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()
String createMarkup(const Range* range, Vector<Node*>* nodes, EAnnotateForInterchange shouldAnnotate, bool convertBlocksToInlines, EAbsoluteURLs shouldResolveURLs)
{
DEFINE_STATIC_LOCAL(const String, interchangeNewlineString, ("<br class=\"" AppleInterchangeNewline "\">"));
if (!range)
return "";
Document* document = range->ownerDocument();
if (!document)
return "";
// 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();
DeleteButtonController* deleteButton = frame ? frame->editor()->deleteButtonController() : 0;
RefPtr<Range> updatedRange = avoidIntersectionWithNode(range, deleteButton ? deleteButton->containerElement() : 0);
if (!updatedRange)
return "";
if (deleteButton)
deleteButton->disable();
ExceptionCode ec = 0;
bool collapsed = updatedRange->collapsed(ec);
ASSERT(!ec);
if (collapsed)
return "";
Node* commonAncestor = updatedRange->commonAncestorContainer(ec);
ASSERT(!ec);
if (!commonAncestor)
return "";
document->updateLayoutIgnorePendingStylesheets();
StyledMarkupAccumulator accumulator(nodes, shouldResolveURLs, shouldAnnotate, updatedRange.get());
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()) {
if (deleteButton)
deleteButton->enable();
return interchangeNewlineString;
}
accumulator.appendString(interchangeNewlineString);
startNode = visibleStart.next().deepEquivalent().node();
if (pastEnd && Range::compareBoundaryPoints(startNode, 0, pastEnd, 0) >= 0) {
if (deleteButton)
deleteButton->enable();
return interchangeNewlineString;
}
}
Node* body = enclosingNodeWithTag(Position(commonAncestor, 0), 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.get(), fullySelectedRoot, shouldAnnotate);
Node* lastClosed = serializeNodes(accumulator, startNode, pastEnd);
if (specialCommonAncestor && lastClosed) {
// Also include all of the ancestors of lastClosed up to this special ancestor.
for (Node* ancestor = lastClosed->parentNode(); ancestor; ancestor = ancestor->parentNode()) {
if (ancestor == fullySelectedRoot && !convertBlocksToInlines) {
RefPtr<CSSMutableStyleDeclaration> 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->getPropertyCSSValue(CSSPropertyBackgroundImage) && static_cast<Element*>(fullySelectedRoot)->hasAttribute(backgroundAttr))
fullySelectedRootStyle->setProperty(CSSPropertyBackgroundImage, "url('" + static_cast<Element*>(fullySelectedRoot)->getAttribute(backgroundAttr) + "')");
if (fullySelectedRootStyle->length()) {
// 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.get(), CSSPropertyTextDecoration))
fullySelectedRootStyle->setProperty(CSSPropertyTextDecoration, CSSValueNone);
if (!propertyMissingOrEqualToNone(fullySelectedRootStyle.get(), CSSPropertyWebkitTextDecorationsInEffect))
fullySelectedRootStyle->setProperty(CSSPropertyWebkitTextDecorationsInEffect, CSSValueNone);
accumulator.wrapWithStyleNode(fullySelectedRootStyle.get(), 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;
}
}
// Add a wrapper span with the styles that all of the nodes in the markup inherit.
Node* parentOfLastClosed = lastClosed ? lastClosed->parentNode() : 0;
if (parentOfLastClosed && parentOfLastClosed->renderer()) {
RefPtr<CSSMutableStyleDeclaration> style = ApplyStyleCommand::editingStyleAtPosition(Position(parentOfLastClosed, 0));
// Styles that Mail blockquotes contribute should only be placed on the Mail blockquote, to help
// us differentiate those styles from ones that the user has applied. This helps us
// get the color of content pasted into blockquotes right.
removeEnclosingMailBlockquoteStyle(style.get(), parentOfLastClosed);
// Document default styles will be added on another wrapper span.
removeDefaultStyles(style.get(), document);
// Since we are converting blocks to inlines, remove any inherited block properties that are in the style.
// This cuts out meaningless properties and prevents properties from magically affecting blocks later
// if the style is cloned for a new block element during a future editing operation.
if (convertBlocksToInlines)
style->removeBlockProperties();
if (style->length() > 0)
accumulator.wrapWithStyleNode(style.get(), document);
}
if (lastClosed && lastClosed != document->documentElement()) {
// Add a style span with the document's default styles. We add these in a separate
// span so that at paste time we can differentiate between document defaults and user
// applied styles.
RefPtr<CSSMutableStyleDeclaration> defaultStyle = ApplyStyleCommand::editingStyleAtPosition(Position(document->documentElement(), 0));
if (defaultStyle->length() > 0)
accumulator.wrapWithStyleNode(defaultStyle.get(), document);
}
// 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);
if (deleteButton)
deleteButton->enable();
return accumulator.takeResults();
}
PassRefPtr<DocumentFragment> createFragmentFromMarkup(Document* document, const String& markup, const String& baseURL, FragmentScriptingPermission scriptingPermission)
{
// We use a fake body element here to trick the HTML parser to using the
// InBody insertion mode. Really, all this code is wrong and need to be
// changed not to use deprecatedCreateContextualFragment.
RefPtr<HTMLBodyElement> fakeBody = HTMLBodyElement::create(document);
// FIXME: This should not use deprecatedCreateContextualFragment
RefPtr<DocumentFragment> fragment = fakeBody->deprecatedCreateContextualFragment(markup, scriptingPermission);
if (fragment && !baseURL.isEmpty() && baseURL != blankURL() && baseURL != document->baseURL())
completeURLs(fragment.get(), baseURL);
return fragment.release();
}
static void serializeNodesWithNamespaces(MarkupAccumulator& accumulator, Node* node, Node* nodeToSkip, EChildrenOnly childrenOnly, const Namespaces* namespaces)
{
if (node == nodeToSkip)
return;
Namespaces namespaceHash;
if (namespaces)
namespaceHash = *namespaces;
if (!childrenOnly)
accumulator.appendStartTag(node, &namespaceHash);
if (!(node->document()->isHTMLDocument() && elementCannotHaveEndTag(node))) {
for (Node* current = node->firstChild(); current; current = current->nextSibling())
serializeNodesWithNamespaces(accumulator, current, nodeToSkip, IncludeNode, &namespaceHash);
}
if (!childrenOnly)
accumulator.appendEndTag(node);
}
String createMarkup(const Node* node, EChildrenOnly childrenOnly, Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs)
{
if (!node)
return "";
HTMLElement* deleteButtonContainerElement = 0;
if (Frame* frame = node->document()->frame()) {
deleteButtonContainerElement = frame->editor()->deleteButtonController()->containerElement();
if (node->isDescendantOf(deleteButtonContainerElement))
return "";
}
MarkupAccumulator accumulator(nodes, shouldResolveURLs);
serializeNodesWithNamespaces(accumulator, const_cast<Node*>(node), deleteButtonContainerElement, childrenOnly, 0);
return accumulator.takeResults();
}
static void fillContainerFromString(ContainerNode* paragraph, const String& string)
{
Document* document = paragraph->document();
ExceptionCode ec = 0;
if (string.isEmpty()) {
paragraph->appendChild(createBlockPlaceholderElement(document), ec);
ASSERT(!ec);
return;
}
ASSERT(string.find('\n') == notFound);
Vector<String> tabList;
string.split('\t', true, tabList);
String 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), ec);
ASSERT(!ec);
tabText = "";
}
RefPtr<Node> textNode = document->createTextNode(stringWithRebalancedWhitespace(s, first, i + 1 == numEntries));
paragraph->appendChild(textNode.release(), ec);
ASSERT(!ec);
}
// 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), ec);
ASSERT(!ec);
}
first = false;
}
}
bool isPlainTextMarkup(Node *node)
{
if (!node->isElementNode() || !node->hasTagName(divTag) || static_cast<Element*>(node)->attributes()->length())
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().node();
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');
ExceptionCode ec = 0;
RenderObject* renderer = styleNode->renderer();
if (renderer && renderer->style()->preserveNewline()) {
fragment->appendChild(document->createTextNode(string), ec);
ASSERT(!ec);
if (string.endsWith("\n")) {
RefPtr<Element> element = createBreakElement(document);
element->setAttribute(classAttr, AppleInterchangeNewline);
fragment->appendChild(element.release(), ec);
ASSERT(!ec);
}
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 = static_cast<Element*>(blockNode);
bool useClonesOfEnclosingBlock = blockNode
&& blockNode->isElementNode()
&& !block->hasTagName(bodyTag)
&& !block->hasTagName(htmlTag)
&& block != editableRootForPosition(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 (useClonesOfEnclosingBlock)
element = block->cloneElementWithoutChildren();
else
element = createDefaultParagraphElement(document);
fillContainerFromString(element.get(), s);
}
fragment->appendChild(element.release(), ec);
ASSERT(!ec);
}
return fragment.release();
}
PassRefPtr<DocumentFragment> createFragmentFromNodes(Document *document, const Vector<Node*>& nodes)
{
if (!document)
return 0;
// disable the delete button so it's elements are not serialized into the markup
if (document->frame())
document->frame()->editor()->deleteButtonController()->disable();
RefPtr<DocumentFragment> fragment = document->createDocumentFragment();
ExceptionCode ec = 0;
size_t size = nodes.size();
for (size_t i = 0; i < size; ++i) {
RefPtr<Element> element = createDefaultParagraphElement(document);
element->appendChild(nodes[i], ec);
ASSERT(!ec);
fragment->appendChild(element.release(), ec);
ASSERT(!ec);
}
if (document->frame())
document->frame()->editor()->deleteButtonController()->enable();
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)
{
Vector<UChar> markup;
append(markup, "<a href=\"");
append(markup, url.string());
append(markup, "\">");
appendCharactersReplacingEntities(markup, title.characters(), title.length(), EntityMaskInPCDATA);
append(markup, "</a>");
return String::adopt(markup);
}
}