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Diffstat (limited to 'Source/WebCore/editing/markup.cpp')
| -rw-r--r-- | Source/WebCore/editing/markup.cpp | 915 |
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); +} + +} |