1 /*
2 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "markup.h"
28
29 #include "CDATASection.h"
30 #include "CSSComputedStyleDeclaration.h"
31 #include "CSSMutableStyleDeclaration.h"
32 #include "CSSPrimitiveValue.h"
33 #include "CSSProperty.h"
34 #include "CSSPropertyNames.h"
35 #include "CSSRule.h"
36 #include "CSSRuleList.h"
37 #include "CSSStyleRule.h"
38 #include "CSSStyleSelector.h"
39 #include "CSSValue.h"
40 #include "CSSValueKeywords.h"
41 #include "DeleteButtonController.h"
42 #include "DocumentFragment.h"
43 #include "DocumentType.h"
44 #include "Editor.h"
45 #include "Frame.h"
46 #include "HTMLBodyElement.h"
47 #include "HTMLElement.h"
48 #include "HTMLNames.h"
49 #include "KURL.h"
50 #include "MarkupAccumulator.h"
51 #include "Range.h"
52 #include "TextIterator.h"
53 #include "VisibleSelection.h"
54 #include "XMLNSNames.h"
55 #include "htmlediting.h"
56 #include "visible_units.h"
57 #include <wtf/StdLibExtras.h>
58 #include <wtf/unicode/CharacterNames.h>
59
60 using namespace std;
61
62 namespace WebCore {
63
64 using namespace HTMLNames;
65
66 static bool propertyMissingOrEqualToNone(CSSStyleDeclaration*, int propertyID);
67
68 class AttributeChange {
69 public:
AttributeChange()70 AttributeChange()
71 : m_name(nullAtom, nullAtom, nullAtom)
72 {
73 }
74
AttributeChange(PassRefPtr<Element> element,const QualifiedName & name,const String & value)75 AttributeChange(PassRefPtr<Element> element, const QualifiedName& name, const String& value)
76 : m_element(element), m_name(name), m_value(value)
77 {
78 }
79
apply()80 void apply()
81 {
82 m_element->setAttribute(m_name, m_value);
83 }
84
85 private:
86 RefPtr<Element> m_element;
87 QualifiedName m_name;
88 String m_value;
89 };
90
completeURLs(Node * node,const String & baseURL)91 static void completeURLs(Node* node, const String& baseURL)
92 {
93 Vector<AttributeChange> changes;
94
95 KURL parsedBaseURL(ParsedURLString, baseURL);
96
97 Node* end = node->traverseNextSibling();
98 for (Node* n = node; n != end; n = n->traverseNextNode()) {
99 if (n->isElementNode()) {
100 Element* e = static_cast<Element*>(n);
101 NamedNodeMap* attributes = e->attributes();
102 unsigned length = attributes->length();
103 for (unsigned i = 0; i < length; i++) {
104 Attribute* attribute = attributes->attributeItem(i);
105 if (e->isURLAttribute(attribute))
106 changes.append(AttributeChange(e, attribute->name(), KURL(parsedBaseURL, attribute->value()).string()));
107 }
108 }
109 }
110
111 size_t numChanges = changes.size();
112 for (size_t i = 0; i < numChanges; ++i)
113 changes[i].apply();
114 }
115
116 class StyledMarkupAccumulator : public MarkupAccumulator {
117 public:
118 enum RangeFullySelectsNode { DoesFullySelectNode, DoesNotFullySelectNode };
119
StyledMarkupAccumulator(Vector<Node * > * nodes,EAbsoluteURLs shouldResolveURLs,EAnnotateForInterchange shouldAnnotate,const Range * range)120 StyledMarkupAccumulator(Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs, EAnnotateForInterchange shouldAnnotate, const Range* range)
121 : MarkupAccumulator(nodes, shouldResolveURLs, range)
122 , m_shouldAnnotate(shouldAnnotate)
123 {
124 }
125
126 Node* serializeNodes(Node* startNode, Node* pastEnd);
appendString(const String & s)127 virtual void appendString(const String& s) { return MarkupAccumulator::appendString(s); }
128 void wrapWithNode(Node*, bool convertBlocksToInlines = false, RangeFullySelectsNode = DoesFullySelectNode);
129 void wrapWithStyleNode(CSSStyleDeclaration*, Document*, bool isBlock = false);
130 String takeResults();
131
132 private:
133 virtual void appendText(Vector<UChar>& out, Text*);
134 String renderedText(const Node*, const Range*);
135 String stringValueForRange(const Node*, const Range*);
136 void removeExteriorStyles(CSSMutableStyleDeclaration*);
137 void appendElement(Vector<UChar>& out, Element* element, bool addDisplayInline, RangeFullySelectsNode);
appendElement(Vector<UChar> & out,Element * element,Namespaces *)138 void appendElement(Vector<UChar>& out, Element* element, Namespaces*) { appendElement(out, element, false, DoesFullySelectNode); }
139
shouldAnnotate()140 bool shouldAnnotate() { return m_shouldAnnotate == AnnotateForInterchange; }
141
142 Vector<String> m_reversedPrecedingMarkup;
143 const EAnnotateForInterchange m_shouldAnnotate;
144 };
145
wrapWithNode(Node * node,bool convertBlocksToInlines,RangeFullySelectsNode rangeFullySelectsNode)146 void StyledMarkupAccumulator::wrapWithNode(Node* node, bool convertBlocksToInlines, RangeFullySelectsNode rangeFullySelectsNode)
147 {
148 Vector<UChar> markup;
149 if (node->isElementNode())
150 appendElement(markup, static_cast<Element*>(node), convertBlocksToInlines && isBlock(const_cast<Node*>(node)), rangeFullySelectsNode);
151 else
152 appendStartMarkup(markup, node, 0);
153 m_reversedPrecedingMarkup.append(String::adopt(markup));
154 appendEndTag(node);
155 if (m_nodes)
156 m_nodes->append(node);
157 }
158
wrapWithStyleNode(CSSStyleDeclaration * style,Document * document,bool isBlock)159 void StyledMarkupAccumulator::wrapWithStyleNode(CSSStyleDeclaration* style, Document* document, bool isBlock)
160 {
161 // All text-decoration-related elements should have been treated as special ancestors
162 // If we ever hit this ASSERT, we should export StyleChange in ApplyStyleCommand and use it here
163 ASSERT(propertyMissingOrEqualToNone(style, CSSPropertyTextDecoration) && propertyMissingOrEqualToNone(style, CSSPropertyWebkitTextDecorationsInEffect));
164 DEFINE_STATIC_LOCAL(const String, divStyle, ("<div style=\""));
165 DEFINE_STATIC_LOCAL(const String, divClose, ("</div>"));
166 DEFINE_STATIC_LOCAL(const String, styleSpanOpen, ("<span class=\"" AppleStyleSpanClass "\" style=\""));
167 DEFINE_STATIC_LOCAL(const String, styleSpanClose, ("</span>"));
168 Vector<UChar> openTag;
169 append(openTag, isBlock ? divStyle : styleSpanOpen);
170 appendAttributeValue(openTag, style->cssText(), document->isHTMLDocument());
171 openTag.append('\"');
172 openTag.append('>');
173 m_reversedPrecedingMarkup.append(String::adopt(openTag));
174 appendString(isBlock ? divClose : styleSpanClose);
175 }
176
takeResults()177 String StyledMarkupAccumulator::takeResults()
178 {
179 Vector<UChar> result;
180 result.reserveInitialCapacity(totalLength(m_reversedPrecedingMarkup) + length());
181
182 for (size_t i = m_reversedPrecedingMarkup.size(); i > 0; --i)
183 append(result, m_reversedPrecedingMarkup[i - 1]);
184
185 concatenateMarkup(result);
186
187 // We remove '\0' characters because they are not visibly rendered to the user.
188 return String::adopt(result).replace(0, "");
189 }
190
appendText(Vector<UChar> & out,Text * text)191 void StyledMarkupAccumulator::appendText(Vector<UChar>& out, Text* text)
192 {
193 if (!shouldAnnotate() || (text->parentElement() && text->parentElement()->tagQName() == textareaTag)) {
194 MarkupAccumulator::appendText(out, text);
195 return;
196 }
197
198 bool useRenderedText = !enclosingNodeWithTag(firstPositionInNode(text), selectTag);
199 String content = useRenderedText ? renderedText(text, m_range) : stringValueForRange(text, m_range);
200 Vector<UChar> buffer;
201 appendCharactersReplacingEntities(buffer, content.characters(), content.length(), EntityMaskInPCDATA);
202 append(out, convertHTMLTextToInterchangeFormat(String::adopt(buffer), text));
203 }
204
renderedText(const Node * node,const Range * range)205 String StyledMarkupAccumulator::renderedText(const Node* node, const Range* range)
206 {
207 if (!node->isTextNode())
208 return String();
209
210 ExceptionCode ec;
211 const Text* textNode = static_cast<const Text*>(node);
212 unsigned startOffset = 0;
213 unsigned endOffset = textNode->length();
214
215 if (range && node == range->startContainer(ec))
216 startOffset = range->startOffset(ec);
217 if (range && node == range->endContainer(ec))
218 endOffset = range->endOffset(ec);
219
220 Position start(const_cast<Node*>(node), startOffset);
221 Position end(const_cast<Node*>(node), endOffset);
222 return plainText(Range::create(node->document(), start, end).get());
223 }
224
stringValueForRange(const Node * node,const Range * range)225 String StyledMarkupAccumulator::stringValueForRange(const Node* node, const Range* range)
226 {
227 if (!range)
228 return node->nodeValue();
229
230 String str = node->nodeValue();
231 ExceptionCode ec;
232 if (node == range->endContainer(ec))
233 str.truncate(range->endOffset(ec));
234 if (node == range->startContainer(ec))
235 str.remove(0, range->startOffset(ec));
236 return str;
237 }
238
styleFromMatchedRulesForElement(Element * element,bool authorOnly=true)239 static PassRefPtr<CSSMutableStyleDeclaration> styleFromMatchedRulesForElement(Element* element, bool authorOnly = true)
240 {
241 RefPtr<CSSMutableStyleDeclaration> style = CSSMutableStyleDeclaration::create();
242 RefPtr<CSSRuleList> matchedRules = element->document()->styleSelector()->styleRulesForElement(element, authorOnly);
243 if (matchedRules) {
244 for (unsigned i = 0; i < matchedRules->length(); i++) {
245 if (matchedRules->item(i)->type() == CSSRule::STYLE_RULE) {
246 RefPtr<CSSMutableStyleDeclaration> s = static_cast<CSSStyleRule*>(matchedRules->item(i))->style();
247 style->merge(s.get(), true);
248 }
249 }
250 }
251
252 return style.release();
253 }
254
appendElement(Vector<UChar> & out,Element * element,bool addDisplayInline,RangeFullySelectsNode rangeFullySelectsNode)255 void StyledMarkupAccumulator::appendElement(Vector<UChar>& out, Element* element, bool addDisplayInline, RangeFullySelectsNode rangeFullySelectsNode)
256 {
257 bool documentIsHTML = element->document()->isHTMLDocument();
258 appendOpenTag(out, element, 0);
259
260 NamedNodeMap* attributes = element->attributes();
261 unsigned length = attributes->length();
262 for (unsigned int i = 0; i < length; i++) {
263 Attribute* attribute = attributes->attributeItem(i);
264 // We'll handle the style attribute separately, below.
265 if (attribute->name() == styleAttr && element->isHTMLElement() && (shouldAnnotate() || addDisplayInline))
266 continue;
267 appendAttribute(out, element, *attribute, 0);
268 }
269
270 if (element->isHTMLElement() && (shouldAnnotate() || addDisplayInline)) {
271 RefPtr<CSSMutableStyleDeclaration> style = toHTMLElement(element)->getInlineStyleDecl()->copy();
272 if (shouldAnnotate()) {
273 RefPtr<CSSMutableStyleDeclaration> styleFromMatchedRules = styleFromMatchedRulesForElement(const_cast<Element*>(element));
274 // Styles from the inline style declaration, held in the variable "style", take precedence
275 // over those from matched rules.
276 styleFromMatchedRules->merge(style.get());
277 style = styleFromMatchedRules;
278
279 RefPtr<CSSComputedStyleDeclaration> computedStyleForElement = computedStyle(element);
280 RefPtr<CSSMutableStyleDeclaration> fromComputedStyle = CSSMutableStyleDeclaration::create();
281
282 {
283 CSSMutableStyleDeclaration::const_iterator end = style->end();
284 for (CSSMutableStyleDeclaration::const_iterator it = style->begin(); it != end; ++it) {
285 const CSSProperty& property = *it;
286 CSSValue* value = property.value();
287 // The property value, if it's a percentage, may not reflect the actual computed value.
288 // For example: style="height: 1%; overflow: visible;" in quirksmode
289 // FIXME: There are others like this, see <rdar://problem/5195123> Slashdot copy/paste fidelity problem
290 if (value->cssValueType() == CSSValue::CSS_PRIMITIVE_VALUE)
291 if (static_cast<CSSPrimitiveValue*>(value)->primitiveType() == CSSPrimitiveValue::CSS_PERCENTAGE)
292 if (RefPtr<CSSValue> computedPropertyValue = computedStyleForElement->getPropertyCSSValue(property.id()))
293 fromComputedStyle->addParsedProperty(CSSProperty(property.id(), computedPropertyValue));
294 }
295 }
296 style->merge(fromComputedStyle.get());
297 }
298 if (addDisplayInline)
299 style->setProperty(CSSPropertyDisplay, CSSValueInline, true);
300 // 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
301 // only the ones that affect it and the nodes within it.
302 if (rangeFullySelectsNode == DoesNotFullySelectNode)
303 removeExteriorStyles(style.get());
304 if (style->length() > 0) {
305 DEFINE_STATIC_LOCAL(const String, stylePrefix, (" style=\""));
306 append(out, stylePrefix);
307 appendAttributeValue(out, style->cssText(), documentIsHTML);
308 out.append('\"');
309 }
310 }
311
312 appendCloseTag(out, element);
313 }
314
removeExteriorStyles(CSSMutableStyleDeclaration * style)315 void StyledMarkupAccumulator::removeExteriorStyles(CSSMutableStyleDeclaration* style)
316 {
317 style->removeProperty(CSSPropertyFloat);
318 }
319
serializeNodes(Node * startNode,Node * pastEnd)320 Node* StyledMarkupAccumulator::serializeNodes(Node* startNode, Node* pastEnd)
321 {
322 Vector<Node*> ancestorsToClose;
323 Node* next;
324 Node* lastClosed = 0;
325 for (Node* n = startNode; n != pastEnd; n = next) {
326 // According to <rdar://problem/5730668>, it is possible for n to blow
327 // past pastEnd and become null here. This shouldn't be possible.
328 // This null check will prevent crashes (but create too much markup)
329 // and the ASSERT will hopefully lead us to understanding the problem.
330 ASSERT(n);
331 if (!n)
332 break;
333
334 next = n->traverseNextNode();
335 bool openedTag = false;
336
337 if (isBlock(n) && canHaveChildrenForEditing(n) && next == pastEnd)
338 // Don't write out empty block containers that aren't fully selected.
339 continue;
340
341 if (!n->renderer() && !enclosingNodeWithTag(firstPositionInOrBeforeNode(n), selectTag)) {
342 next = n->traverseNextSibling();
343 // Don't skip over pastEnd.
344 if (pastEnd && pastEnd->isDescendantOf(n))
345 next = pastEnd;
346 } else {
347 // Add the node to the markup if we're not skipping the descendants
348 appendStartTag(n);
349
350 // If node has no children, close the tag now.
351 if (!n->childNodeCount()) {
352 appendEndTag(n);
353 lastClosed = n;
354 } else {
355 openedTag = true;
356 ancestorsToClose.append(n);
357 }
358 }
359
360 // 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.
361 // FIXME: What happens if we just inserted open tag and reached the end?
362 if (!openedTag && (!n->nextSibling() || next == pastEnd)) {
363 // Close up the ancestors.
364 while (!ancestorsToClose.isEmpty()) {
365 Node* ancestor = ancestorsToClose.last();
366 if (next != pastEnd && next->isDescendantOf(ancestor))
367 break;
368 // Not at the end of the range, close ancestors up to sibling of next node.
369 appendEndTag(ancestor);
370 lastClosed = ancestor;
371 ancestorsToClose.removeLast();
372 }
373
374 // Surround the currently accumulated markup with markup for ancestors we never opened as we leave the subtree(s) rooted at those ancestors.
375 ContainerNode* nextParent = next ? next->parentNode() : 0;
376 if (next != pastEnd && n != nextParent) {
377 Node* lastAncestorClosedOrSelf = n->isDescendantOf(lastClosed) ? lastClosed : n;
378 for (ContainerNode* parent = lastAncestorClosedOrSelf->parentNode(); parent && parent != nextParent; parent = parent->parentNode()) {
379 // All ancestors that aren't in the ancestorsToClose list should either be a) unrendered:
380 if (!parent->renderer())
381 continue;
382 // or b) ancestors that we never encountered during a pre-order traversal starting at startNode:
383 ASSERT(startNode->isDescendantOf(parent));
384 wrapWithNode(parent);
385 lastClosed = parent;
386 }
387 }
388 }
389 }
390
391 return lastClosed;
392 }
393
ancestorToRetainStructureAndAppearance(Node * commonAncestor)394 static Node* ancestorToRetainStructureAndAppearance(Node* commonAncestor)
395 {
396 Node* commonAncestorBlock = enclosingBlock(commonAncestor);
397
398 if (!commonAncestorBlock)
399 return 0;
400
401 if (commonAncestorBlock->hasTagName(tbodyTag) || commonAncestorBlock->hasTagName(trTag)) {
402 ContainerNode* table = commonAncestorBlock->parentNode();
403 while (table && !table->hasTagName(tableTag))
404 table = table->parentNode();
405
406 return table;
407 }
408
409 if (commonAncestorBlock->hasTagName(listingTag)
410 || commonAncestorBlock->hasTagName(olTag)
411 || commonAncestorBlock->hasTagName(preTag)
412 || commonAncestorBlock->hasTagName(tableTag)
413 || commonAncestorBlock->hasTagName(ulTag)
414 || commonAncestorBlock->hasTagName(xmpTag)
415 || commonAncestorBlock->hasTagName(h1Tag)
416 || commonAncestorBlock->hasTagName(h2Tag)
417 || commonAncestorBlock->hasTagName(h3Tag)
418 || commonAncestorBlock->hasTagName(h4Tag)
419 || commonAncestorBlock->hasTagName(h5Tag))
420 return commonAncestorBlock;
421
422 return 0;
423 }
424
propertyMissingOrEqualToNone(CSSStyleDeclaration * style,int propertyID)425 static bool propertyMissingOrEqualToNone(CSSStyleDeclaration* style, int propertyID)
426 {
427 if (!style)
428 return false;
429 RefPtr<CSSValue> value = style->getPropertyCSSValue(propertyID);
430 if (!value)
431 return true;
432 if (!value->isPrimitiveValue())
433 return false;
434 return static_cast<CSSPrimitiveValue*>(value.get())->getIdent() == CSSValueNone;
435 }
436
needInterchangeNewlineAfter(const VisiblePosition & v)437 static bool needInterchangeNewlineAfter(const VisiblePosition& v)
438 {
439 VisiblePosition next = v.next();
440 Node* upstreamNode = next.deepEquivalent().upstream().deprecatedNode();
441 Node* downstreamNode = v.deepEquivalent().downstream().deprecatedNode();
442 // Add an interchange newline if a paragraph break is selected and a br won't already be added to the markup to represent it.
443 return isEndOfParagraph(v) && isStartOfParagraph(next) && !(upstreamNode->hasTagName(brTag) && upstreamNode == downstreamNode);
444 }
445
styleFromMatchedRulesAndInlineDecl(const Node * node)446 static PassRefPtr<CSSMutableStyleDeclaration> styleFromMatchedRulesAndInlineDecl(const Node* node)
447 {
448 if (!node->isHTMLElement())
449 return 0;
450
451 // FIXME: Having to const_cast here is ugly, but it is quite a bit of work to untangle
452 // the non-const-ness of styleFromMatchedRulesForElement.
453 HTMLElement* element = const_cast<HTMLElement*>(static_cast<const HTMLElement*>(node));
454 RefPtr<CSSMutableStyleDeclaration> style = styleFromMatchedRulesForElement(element);
455 RefPtr<CSSMutableStyleDeclaration> inlineStyleDecl = element->getInlineStyleDecl();
456 style->merge(inlineStyleDecl.get());
457 return style.release();
458 }
459
isElementPresentational(const Node * node)460 static bool isElementPresentational(const Node* node)
461 {
462 if (node->hasTagName(uTag) || node->hasTagName(sTag) || node->hasTagName(strikeTag)
463 || node->hasTagName(iTag) || node->hasTagName(emTag) || node->hasTagName(bTag) || node->hasTagName(strongTag))
464 return true;
465 RefPtr<CSSMutableStyleDeclaration> style = styleFromMatchedRulesAndInlineDecl(node);
466 if (!style)
467 return false;
468 return !propertyMissingOrEqualToNone(style.get(), CSSPropertyTextDecoration);
469 }
470
shouldIncludeWrapperForFullySelectedRoot(Node * fullySelectedRoot,CSSMutableStyleDeclaration * style)471 static bool shouldIncludeWrapperForFullySelectedRoot(Node* fullySelectedRoot, CSSMutableStyleDeclaration* style)
472 {
473 if (fullySelectedRoot->isElementNode() && static_cast<Element*>(fullySelectedRoot)->hasAttribute(backgroundAttr))
474 return true;
475
476 return style->getPropertyCSSValue(CSSPropertyBackgroundImage) || style->getPropertyCSSValue(CSSPropertyBackgroundColor);
477 }
478
highestAncestorToWrapMarkup(const Range * range,Node * fullySelectedRoot,EAnnotateForInterchange shouldAnnotate)479 static Node* highestAncestorToWrapMarkup(const Range* range, Node* fullySelectedRoot, EAnnotateForInterchange shouldAnnotate)
480 {
481 ExceptionCode ec;
482 Node* commonAncestor = range->commonAncestorContainer(ec);
483 ASSERT(commonAncestor);
484 Node* specialCommonAncestor = 0;
485 if (shouldAnnotate == AnnotateForInterchange) {
486 // Include ancestors that aren't completely inside the range but are required to retain
487 // the structure and appearance of the copied markup.
488 specialCommonAncestor = ancestorToRetainStructureAndAppearance(commonAncestor);
489
490 // Retain the Mail quote level by including all ancestor mail block quotes.
491 if (Node* highestMailBlockquote = highestEnclosingNodeOfType(firstPositionInOrBeforeNode(range->firstNode()), isMailBlockquote, CanCrossEditingBoundary))
492 specialCommonAncestor = highestMailBlockquote;
493 }
494
495 Node* checkAncestor = specialCommonAncestor ? specialCommonAncestor : commonAncestor;
496 if (checkAncestor->renderer()) {
497 Node* newSpecialCommonAncestor = highestEnclosingNodeOfType(firstPositionInNode(checkAncestor), &isElementPresentational);
498 if (newSpecialCommonAncestor)
499 specialCommonAncestor = newSpecialCommonAncestor;
500 }
501
502 // If a single tab is selected, commonAncestor will be a text node inside a tab span.
503 // If two or more tabs are selected, commonAncestor will be the tab span.
504 // In either case, if there is a specialCommonAncestor already, it will necessarily be above
505 // any tab span that needs to be included.
506 if (!specialCommonAncestor && isTabSpanTextNode(commonAncestor))
507 specialCommonAncestor = commonAncestor->parentNode();
508 if (!specialCommonAncestor && isTabSpanNode(commonAncestor))
509 specialCommonAncestor = commonAncestor;
510
511 if (Node *enclosingAnchor = enclosingNodeWithTag(firstPositionInNode(specialCommonAncestor ? specialCommonAncestor : commonAncestor), aTag))
512 specialCommonAncestor = enclosingAnchor;
513
514 if (shouldAnnotate == AnnotateForInterchange && fullySelectedRoot) {
515 RefPtr<CSSMutableStyleDeclaration> fullySelectedRootStyle = styleFromMatchedRulesAndInlineDecl(fullySelectedRoot);
516 if (shouldIncludeWrapperForFullySelectedRoot(fullySelectedRoot, fullySelectedRootStyle.get()))
517 specialCommonAncestor = fullySelectedRoot;
518 }
519 return specialCommonAncestor;
520 }
521
522 // FIXME: Shouldn't we omit style info when annotate == DoNotAnnotateForInterchange?
523 // FIXME: At least, annotation and style info should probably not be included in range.markupString()
createMarkup(const Range * range,Vector<Node * > * nodes,EAnnotateForInterchange shouldAnnotate,bool convertBlocksToInlines,EAbsoluteURLs shouldResolveURLs)524 String createMarkup(const Range* range, Vector<Node*>* nodes, EAnnotateForInterchange shouldAnnotate, bool convertBlocksToInlines, EAbsoluteURLs shouldResolveURLs)
525 {
526 DEFINE_STATIC_LOCAL(const String, interchangeNewlineString, ("<br class=\"" AppleInterchangeNewline "\">"));
527
528 if (!range)
529 return "";
530
531 Document* document = range->ownerDocument();
532 if (!document)
533 return "";
534
535 // Disable the delete button so it's elements are not serialized into the markup,
536 // but make sure neither endpoint is inside the delete user interface.
537 Frame* frame = document->frame();
538 DeleteButtonController* deleteButton = frame ? frame->editor()->deleteButtonController() : 0;
539 RefPtr<Range> updatedRange = avoidIntersectionWithNode(range, deleteButton ? deleteButton->containerElement() : 0);
540 if (!updatedRange)
541 return "";
542
543 if (deleteButton)
544 deleteButton->disable();
545
546 ExceptionCode ec = 0;
547 bool collapsed = updatedRange->collapsed(ec);
548 ASSERT(!ec);
549 if (collapsed)
550 return "";
551 Node* commonAncestor = updatedRange->commonAncestorContainer(ec);
552 ASSERT(!ec);
553 if (!commonAncestor)
554 return "";
555
556 document->updateLayoutIgnorePendingStylesheets();
557
558 StyledMarkupAccumulator accumulator(nodes, shouldResolveURLs, shouldAnnotate, updatedRange.get());
559 Node* pastEnd = updatedRange->pastLastNode();
560
561 Node* startNode = updatedRange->firstNode();
562 VisiblePosition visibleStart(updatedRange->startPosition(), VP_DEFAULT_AFFINITY);
563 VisiblePosition visibleEnd(updatedRange->endPosition(), VP_DEFAULT_AFFINITY);
564 if (shouldAnnotate == AnnotateForInterchange && needInterchangeNewlineAfter(visibleStart)) {
565 if (visibleStart == visibleEnd.previous()) {
566 if (deleteButton)
567 deleteButton->enable();
568 return interchangeNewlineString;
569 }
570
571 accumulator.appendString(interchangeNewlineString);
572 startNode = visibleStart.next().deepEquivalent().deprecatedNode();
573
574 ExceptionCode ec = 0;
575 if (pastEnd && Range::compareBoundaryPoints(startNode, 0, pastEnd, 0, ec) >= 0) {
576 ASSERT(!ec);
577 if (deleteButton)
578 deleteButton->enable();
579 return interchangeNewlineString;
580 }
581 ASSERT(!ec);
582 }
583
584 Node* body = enclosingNodeWithTag(firstPositionInNode(commonAncestor), bodyTag);
585 Node* fullySelectedRoot = 0;
586 // FIXME: Do this for all fully selected blocks, not just the body.
587 if (body && areRangesEqual(VisibleSelection::selectionFromContentsOfNode(body).toNormalizedRange().get(), range))
588 fullySelectedRoot = body;
589
590 Node* specialCommonAncestor = highestAncestorToWrapMarkup(updatedRange.get(), fullySelectedRoot, shouldAnnotate);
591
592 Node* lastClosed = accumulator.serializeNodes(startNode, pastEnd);
593
594 if (specialCommonAncestor && lastClosed) {
595 // Also include all of the ancestors of lastClosed up to this special ancestor.
596 for (ContainerNode* ancestor = lastClosed->parentNode(); ancestor; ancestor = ancestor->parentNode()) {
597 if (ancestor == fullySelectedRoot && !convertBlocksToInlines) {
598 RefPtr<CSSMutableStyleDeclaration> fullySelectedRootStyle = styleFromMatchedRulesAndInlineDecl(fullySelectedRoot);
599
600 // Bring the background attribute over, but not as an attribute because a background attribute on a div
601 // appears to have no effect.
602 if (!fullySelectedRootStyle->getPropertyCSSValue(CSSPropertyBackgroundImage) && static_cast<Element*>(fullySelectedRoot)->hasAttribute(backgroundAttr))
603 fullySelectedRootStyle->setProperty(CSSPropertyBackgroundImage, "url('" + static_cast<Element*>(fullySelectedRoot)->getAttribute(backgroundAttr) + "')");
604
605 if (fullySelectedRootStyle->length()) {
606 // Reset the CSS properties to avoid an assertion error in addStyleMarkup().
607 // This assertion is caused at least when we select all text of a <body> element whose
608 // 'text-decoration' property is "inherit", and copy it.
609 if (!propertyMissingOrEqualToNone(fullySelectedRootStyle.get(), CSSPropertyTextDecoration))
610 fullySelectedRootStyle->setProperty(CSSPropertyTextDecoration, CSSValueNone);
611 if (!propertyMissingOrEqualToNone(fullySelectedRootStyle.get(), CSSPropertyWebkitTextDecorationsInEffect))
612 fullySelectedRootStyle->setProperty(CSSPropertyWebkitTextDecorationsInEffect, CSSValueNone);
613 accumulator.wrapWithStyleNode(fullySelectedRootStyle.get(), document, true);
614 }
615 } else {
616 // Since this node and all the other ancestors are not in the selection we want to set RangeFullySelectsNode to DoesNotFullySelectNode
617 // so that styles that affect the exterior of the node are not included.
618 accumulator.wrapWithNode(ancestor, convertBlocksToInlines, StyledMarkupAccumulator::DoesNotFullySelectNode);
619 }
620 if (nodes)
621 nodes->append(ancestor);
622
623 lastClosed = ancestor;
624
625 if (ancestor == specialCommonAncestor)
626 break;
627 }
628 }
629
630 // Add a wrapper span with the styles that all of the nodes in the markup inherit.
631 ContainerNode* parentOfLastClosed = lastClosed ? lastClosed->parentNode() : 0;
632 if (parentOfLastClosed && parentOfLastClosed->renderer()) {
633 RefPtr<EditingStyle> style = EditingStyle::create(parentOfLastClosed);
634
635 // Styles that Mail blockquotes contribute should only be placed on the Mail blockquote, to help
636 // us differentiate those styles from ones that the user has applied. This helps us
637 // get the color of content pasted into blockquotes right.
638 style->removeStyleAddedByNode(enclosingNodeOfType(firstPositionInNode(parentOfLastClosed), isMailBlockquote, CanCrossEditingBoundary));
639
640 // Document default styles will be added on another wrapper span.
641 if (document && document->documentElement())
642 style->prepareToApplyAt(firstPositionInNode(document->documentElement()));
643
644 // Since we are converting blocks to inlines, remove any inherited block properties that are in the style.
645 // This cuts out meaningless properties and prevents properties from magically affecting blocks later
646 // if the style is cloned for a new block element during a future editing operation.
647 if (convertBlocksToInlines)
648 style->removeBlockProperties();
649
650 if (!style->isEmpty())
651 accumulator.wrapWithStyleNode(style->style(), document);
652 }
653
654 if (lastClosed && lastClosed != document->documentElement()) {
655 // Add a style span with the document's default styles. We add these in a separate
656 // span so that at paste time we can differentiate between document defaults and user
657 // applied styles.
658 RefPtr<EditingStyle> defaultStyle = EditingStyle::create(document->documentElement());
659 if (!defaultStyle->isEmpty())
660 accumulator.wrapWithStyleNode(defaultStyle->style(), document);
661 }
662
663 // FIXME: The interchange newline should be placed in the block that it's in, not after all of the content, unconditionally.
664 if (shouldAnnotate == AnnotateForInterchange && needInterchangeNewlineAfter(visibleEnd.previous()))
665 accumulator.appendString(interchangeNewlineString);
666
667 if (deleteButton)
668 deleteButton->enable();
669
670 return accumulator.takeResults();
671 }
672
createFragmentFromMarkup(Document * document,const String & markup,const String & baseURL,FragmentScriptingPermission scriptingPermission)673 PassRefPtr<DocumentFragment> createFragmentFromMarkup(Document* document, const String& markup, const String& baseURL, FragmentScriptingPermission scriptingPermission)
674 {
675 // We use a fake body element here to trick the HTML parser to using the
676 // InBody insertion mode. Really, all this code is wrong and need to be
677 // changed not to use deprecatedCreateContextualFragment.
678 RefPtr<HTMLBodyElement> fakeBody = HTMLBodyElement::create(document);
679 // FIXME: This should not use deprecatedCreateContextualFragment
680 RefPtr<DocumentFragment> fragment = fakeBody->deprecatedCreateContextualFragment(markup, scriptingPermission);
681
682 if (fragment && !baseURL.isEmpty() && baseURL != blankURL() && baseURL != document->baseURL())
683 completeURLs(fragment.get(), baseURL);
684
685 return fragment.release();
686 }
687
createMarkup(const Node * node,EChildrenOnly childrenOnly,Vector<Node * > * nodes,EAbsoluteURLs shouldResolveURLs)688 String createMarkup(const Node* node, EChildrenOnly childrenOnly, Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs)
689 {
690 if (!node)
691 return "";
692
693 HTMLElement* deleteButtonContainerElement = 0;
694 if (Frame* frame = node->document()->frame()) {
695 deleteButtonContainerElement = frame->editor()->deleteButtonController()->containerElement();
696 if (node->isDescendantOf(deleteButtonContainerElement))
697 return "";
698 }
699
700 MarkupAccumulator accumulator(nodes, shouldResolveURLs);
701 return accumulator.serializeNodes(const_cast<Node*>(node), deleteButtonContainerElement, childrenOnly);
702 }
703
fillContainerFromString(ContainerNode * paragraph,const String & string)704 static void fillContainerFromString(ContainerNode* paragraph, const String& string)
705 {
706 Document* document = paragraph->document();
707
708 ExceptionCode ec = 0;
709 if (string.isEmpty()) {
710 paragraph->appendChild(createBlockPlaceholderElement(document), ec);
711 ASSERT(!ec);
712 return;
713 }
714
715 ASSERT(string.find('\n') == notFound);
716
717 Vector<String> tabList;
718 string.split('\t', true, tabList);
719 String tabText = "";
720 bool first = true;
721 size_t numEntries = tabList.size();
722 for (size_t i = 0; i < numEntries; ++i) {
723 const String& s = tabList[i];
724
725 // append the non-tab textual part
726 if (!s.isEmpty()) {
727 if (!tabText.isEmpty()) {
728 paragraph->appendChild(createTabSpanElement(document, tabText), ec);
729 ASSERT(!ec);
730 tabText = "";
731 }
732 RefPtr<Node> textNode = document->createTextNode(stringWithRebalancedWhitespace(s, first, i + 1 == numEntries));
733 paragraph->appendChild(textNode.release(), ec);
734 ASSERT(!ec);
735 }
736
737 // there is a tab after every entry, except the last entry
738 // (if the last character is a tab, the list gets an extra empty entry)
739 if (i + 1 != numEntries)
740 tabText.append('\t');
741 else if (!tabText.isEmpty()) {
742 paragraph->appendChild(createTabSpanElement(document, tabText), ec);
743 ASSERT(!ec);
744 }
745
746 first = false;
747 }
748 }
749
isPlainTextMarkup(Node * node)750 bool isPlainTextMarkup(Node *node)
751 {
752 if (!node->isElementNode() || !node->hasTagName(divTag) || static_cast<Element*>(node)->attributes()->length())
753 return false;
754
755 if (node->childNodeCount() == 1 && (node->firstChild()->isTextNode() || (node->firstChild()->firstChild())))
756 return true;
757
758 return (node->childNodeCount() == 2 && isTabSpanTextNode(node->firstChild()->firstChild()) && node->firstChild()->nextSibling()->isTextNode());
759 }
760
createFragmentFromText(Range * context,const String & text)761 PassRefPtr<DocumentFragment> createFragmentFromText(Range* context, const String& text)
762 {
763 if (!context)
764 return 0;
765
766 Node* styleNode = context->firstNode();
767 if (!styleNode) {
768 styleNode = context->startPosition().deprecatedNode();
769 if (!styleNode)
770 return 0;
771 }
772
773 Document* document = styleNode->document();
774 RefPtr<DocumentFragment> fragment = document->createDocumentFragment();
775
776 if (text.isEmpty())
777 return fragment.release();
778
779 String string = text;
780 string.replace("\r\n", "\n");
781 string.replace('\r', '\n');
782
783 ExceptionCode ec = 0;
784 RenderObject* renderer = styleNode->renderer();
785 if (renderer && renderer->style()->preserveNewline()) {
786 fragment->appendChild(document->createTextNode(string), ec);
787 ASSERT(!ec);
788 if (string.endsWith("\n")) {
789 RefPtr<Element> element = createBreakElement(document);
790 element->setAttribute(classAttr, AppleInterchangeNewline);
791 fragment->appendChild(element.release(), ec);
792 ASSERT(!ec);
793 }
794 return fragment.release();
795 }
796
797 // A string with no newlines gets added inline, rather than being put into a paragraph.
798 if (string.find('\n') == notFound) {
799 fillContainerFromString(fragment.get(), string);
800 return fragment.release();
801 }
802
803 // Break string into paragraphs. Extra line breaks turn into empty paragraphs.
804 Node* blockNode = enclosingBlock(context->firstNode());
805 Element* block = static_cast<Element*>(blockNode);
806 bool useClonesOfEnclosingBlock = blockNode
807 && blockNode->isElementNode()
808 && !block->hasTagName(bodyTag)
809 && !block->hasTagName(htmlTag)
810 && block != editableRootForPosition(context->startPosition());
811
812 Vector<String> list;
813 string.split('\n', true, list); // true gets us empty strings in the list
814 size_t numLines = list.size();
815 for (size_t i = 0; i < numLines; ++i) {
816 const String& s = list[i];
817
818 RefPtr<Element> element;
819 if (s.isEmpty() && i + 1 == numLines) {
820 // For last line, use the "magic BR" rather than a P.
821 element = createBreakElement(document);
822 element->setAttribute(classAttr, AppleInterchangeNewline);
823 } else {
824 if (useClonesOfEnclosingBlock)
825 element = block->cloneElementWithoutChildren();
826 else
827 element = createDefaultParagraphElement(document);
828 fillContainerFromString(element.get(), s);
829 }
830 fragment->appendChild(element.release(), ec);
831 ASSERT(!ec);
832 }
833 return fragment.release();
834 }
835
createFragmentFromNodes(Document * document,const Vector<Node * > & nodes)836 PassRefPtr<DocumentFragment> createFragmentFromNodes(Document *document, const Vector<Node*>& nodes)
837 {
838 if (!document)
839 return 0;
840
841 // disable the delete button so it's elements are not serialized into the markup
842 if (document->frame())
843 document->frame()->editor()->deleteButtonController()->disable();
844
845 RefPtr<DocumentFragment> fragment = document->createDocumentFragment();
846
847 ExceptionCode ec = 0;
848 size_t size = nodes.size();
849 for (size_t i = 0; i < size; ++i) {
850 RefPtr<Element> element = createDefaultParagraphElement(document);
851 element->appendChild(nodes[i], ec);
852 ASSERT(!ec);
853 fragment->appendChild(element.release(), ec);
854 ASSERT(!ec);
855 }
856
857 if (document->frame())
858 document->frame()->editor()->deleteButtonController()->enable();
859
860 return fragment.release();
861 }
862
createFullMarkup(const Node * node)863 String createFullMarkup(const Node* node)
864 {
865 if (!node)
866 return String();
867
868 Document* document = node->document();
869 if (!document)
870 return String();
871
872 Frame* frame = document->frame();
873 if (!frame)
874 return String();
875
876 // FIXME: This is never "for interchange". Is that right?
877 String markupString = createMarkup(node, IncludeNode, 0);
878 Node::NodeType nodeType = node->nodeType();
879 if (nodeType != Node::DOCUMENT_NODE && nodeType != Node::DOCUMENT_TYPE_NODE)
880 markupString = frame->documentTypeString() + markupString;
881
882 return markupString;
883 }
884
createFullMarkup(const Range * range)885 String createFullMarkup(const Range* range)
886 {
887 if (!range)
888 return String();
889
890 Node* node = range->startContainer();
891 if (!node)
892 return String();
893
894 Document* document = node->document();
895 if (!document)
896 return String();
897
898 Frame* frame = document->frame();
899 if (!frame)
900 return String();
901
902 // FIXME: This is always "for interchange". Is that right? See the previous method.
903 return frame->documentTypeString() + createMarkup(range, 0, AnnotateForInterchange);
904 }
905
urlToMarkup(const KURL & url,const String & title)906 String urlToMarkup(const KURL& url, const String& title)
907 {
908 Vector<UChar> markup;
909 append(markup, "<a href=\"");
910 append(markup, url.string());
911 append(markup, "\">");
912 appendCharactersReplacingEntities(markup, title.characters(), title.length(), EntityMaskInPCDATA);
913 append(markup, "</a>");
914 return String::adopt(markup);
915 }
916
917 }
918