Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 915 insertions, 0 deletions

diff --git a/Source/WebCore/editing/markup.cpp b/Source/WebCore/editing/markup.cpp
new file mode 100644
index 0000000..4cbdcce
--- /dev/null
+++ b/Source/WebCore/editing/markup.cpp
@@ -0,0 +1,915 @@
+/*
+ * 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 "CDATASection.h"
+#include "CharacterNames.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 "KURL.h"
+#include "MarkupAccumulator.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;
+};
+
+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();
+}
+    
+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)
+    {
+    }
+
+    Node* serializeNodes(Node* startNode, Node* pastEnd);
+    void appendString(const String& s) { return MarkupAccumulator::appendString(s); }
+    void wrapWithNode(Node*, bool convertBlocksToInlines = false, RangeFullySelectsNode = DoesFullySelectNode);
+    void wrapWithStyleNode(CSSStyleDeclaration*, Document*, bool isBlock = false);
+    String takeResults();
+
+private:
+    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; }
+
+    Vector<String> m_reversedPrecedingMarkup;
+    const EAnnotateForInterchange m_shouldAnnotate;
+};
+
+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));
+    appendString(isBlock ? divClose : styleSpanClose);
+}
+
+String StyledMarkupAccumulator::takeResults()
+{
+    Vector<UChar> result;
+    result.reserveInitialCapacity(totalLength(m_reversedPrecedingMarkup) + length());
+
+    for (size_t i = m_reversedPrecedingMarkup.size(); i > 0; --i)
+        append(result, m_reversedPrecedingMarkup[i - 1]);
+
+    concatenateMarkup(result);
+
+    return String::adopt(result);
+}
+
+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));
+}
+    
+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());
+}
+
+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;
+}
+
+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();
+}
+
+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 StyledMarkupAccumulator::removeExteriorStyles(CSSMutableStyleDeclaration* style)
+{
+    style->removeProperty(CSSPropertyFloat);
+}
+
+Node* StyledMarkupAccumulator::serializeNodes(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
+            appendStartTag(n);
+
+            // If node has no children, close the tag now.
+            if (!n->childNodeCount()) {
+                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.
+                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));
+                    wrapWithNode(parent);
+                    lastClosed = parent;
+                }
+            }
+        }
+    }
+
+    return lastClosed;
+}
+
+static Node* ancestorToRetainStructureAndAppearance(Node* commonAncestor)
+{
+    Node* commonAncestorBlock = enclosingBlock(commonAncestor);
+
+    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 (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 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 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 = 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<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.
+    ContainerNode* parentOfLastClosed = lastClosed ? lastClosed->parentNode() : 0;
+    if (parentOfLastClosed && parentOfLastClosed->renderer()) {
+        RefPtr<EditingStyle> style = EditingStyle::create(parentOfLastClosed);
+
+        // 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.
+        style->removeStyleAddedByNode(nearestMailBlockquote(parentOfLastClosed));
+
+        // Document default styles will be added on another wrapper span.
+        if (document && document->documentElement())
+            style->prepareToApplyAt(firstPositionInNode(document->documentElement()));
+
+        // 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->isEmpty())
+            accumulator.wrapWithStyleNode(style->style(), 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<EditingStyle> defaultStyle = EditingStyle::create(document->documentElement());
+        if (!defaultStyle->isEmpty())
+            accumulator.wrapWithStyleNode(defaultStyle->style(), 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();
+}
+
+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);
+    return accumulator.serializeNodes(const_cast<Node*>(node), deleteButtonContainerElement, childrenOnly);
+}
+
+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);
+}
+
+}