1 /*
2 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2008, 2009 Google Inc.
4 * Copyright (C) 2011 Igalia S.L.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "config.h"
29 #include "markup.h"
30
31 #include "CDATASection.h"
32 #include "CSSComputedStyleDeclaration.h"
33 #include "CSSMutableStyleDeclaration.h"
34 #include "CSSPrimitiveValue.h"
35 #include "CSSProperty.h"
36 #include "CSSPropertyNames.h"
37 #include "CSSRule.h"
38 #include "CSSRuleList.h"
39 #include "CSSStyleRule.h"
40 #include "CSSStyleSelector.h"
41 #include "CSSValue.h"
42 #include "CSSValueKeywords.h"
43 #include "DeleteButtonController.h"
44 #include "DocumentFragment.h"
45 #include "DocumentType.h"
46 #include "Editor.h"
47 #include "Frame.h"
48 #include "HTMLBodyElement.h"
49 #include "HTMLElement.h"
50 #include "HTMLNames.h"
51 #include "KURL.h"
52 #include "MarkupAccumulator.h"
53 #include "Range.h"
54 #include "TextIterator.h"
55 #include "VisibleSelection.h"
56 #include "XMLNSNames.h"
57 #include "htmlediting.h"
58 #include "visible_units.h"
59 #include <wtf/StdLibExtras.h>
60 #include <wtf/unicode/CharacterNames.h>
61
62 using namespace std;
63
64 namespace WebCore {
65
66 using namespace HTMLNames;
67
68 static bool propertyMissingOrEqualToNone(CSSStyleDeclaration*, int propertyID);
69
70 class AttributeChange {
71 public:
AttributeChange()72 AttributeChange()
73 : m_name(nullAtom, nullAtom, nullAtom)
74 {
75 }
76
AttributeChange(PassRefPtr<Element> element,const QualifiedName & name,const String & value)77 AttributeChange(PassRefPtr<Element> element, const QualifiedName& name, const String& value)
78 : m_element(element), m_name(name), m_value(value)
79 {
80 }
81
apply()82 void apply()
83 {
84 m_element->setAttribute(m_name, m_value);
85 }
86
87 private:
88 RefPtr<Element> m_element;
89 QualifiedName m_name;
90 String m_value;
91 };
92
completeURLs(Node * node,const String & baseURL)93 static void completeURLs(Node* node, const String& baseURL)
94 {
95 Vector<AttributeChange> changes;
96
97 KURL parsedBaseURL(ParsedURLString, baseURL);
98
99 Node* end = node->traverseNextSibling();
100 for (Node* n = node; n != end; n = n->traverseNextNode()) {
101 if (n->isElementNode()) {
102 Element* e = static_cast<Element*>(n);
103 NamedNodeMap* attributes = e->attributes();
104 unsigned length = attributes->length();
105 for (unsigned i = 0; i < length; i++) {
106 Attribute* attribute = attributes->attributeItem(i);
107 if (e->isURLAttribute(attribute))
108 changes.append(AttributeChange(e, attribute->name(), KURL(parsedBaseURL, attribute->value()).string()));
109 }
110 }
111 }
112
113 size_t numChanges = changes.size();
114 for (size_t i = 0; i < numChanges; ++i)
115 changes[i].apply();
116 }
117
118 class StyledMarkupAccumulator : public MarkupAccumulator {
119 public:
120 enum RangeFullySelectsNode { DoesFullySelectNode, DoesNotFullySelectNode };
121
StyledMarkupAccumulator(Vector<Node * > * nodes,EAbsoluteURLs shouldResolveURLs,EAnnotateForInterchange shouldAnnotate,const Range * range)122 StyledMarkupAccumulator(Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs, EAnnotateForInterchange shouldAnnotate, const Range* range)
123 : MarkupAccumulator(nodes, shouldResolveURLs, range)
124 , m_shouldAnnotate(shouldAnnotate)
125 {
126 }
127
128 Node* serializeNodes(Node* startNode, Node* pastEnd);
appendString(const String & s)129 virtual void appendString(const String& s) { return MarkupAccumulator::appendString(s); }
130 void wrapWithNode(Node*, bool convertBlocksToInlines = false, RangeFullySelectsNode = DoesFullySelectNode);
131 void wrapWithStyleNode(CSSStyleDeclaration*, Document*, bool isBlock = false);
132 String takeResults();
133
134 private:
135 virtual void appendText(Vector<UChar>& out, Text*);
136 String renderedText(const Node*, const Range*);
137 String stringValueForRange(const Node*, const Range*);
138 void removeExteriorStyles(CSSMutableStyleDeclaration*);
139 void appendElement(Vector<UChar>& out, Element* element, bool addDisplayInline, RangeFullySelectsNode);
appendElement(Vector<UChar> & out,Element * element,Namespaces *)140 void appendElement(Vector<UChar>& out, Element* element, Namespaces*) { appendElement(out, element, false, DoesFullySelectNode); }
141
shouldAnnotate()142 bool shouldAnnotate() { return m_shouldAnnotate == AnnotateForInterchange; }
143
144 Vector<String> m_reversedPrecedingMarkup;
145 const EAnnotateForInterchange m_shouldAnnotate;
146 };
147
wrapWithNode(Node * node,bool convertBlocksToInlines,RangeFullySelectsNode rangeFullySelectsNode)148 void StyledMarkupAccumulator::wrapWithNode(Node* node, bool convertBlocksToInlines, RangeFullySelectsNode rangeFullySelectsNode)
149 {
150 Vector<UChar> markup;
151 if (node->isElementNode())
152 appendElement(markup, static_cast<Element*>(node), convertBlocksToInlines && isBlock(const_cast<Node*>(node)), rangeFullySelectsNode);
153 else
154 appendStartMarkup(markup, node, 0);
155 m_reversedPrecedingMarkup.append(String::adopt(markup));
156 appendEndTag(node);
157 if (m_nodes)
158 m_nodes->append(node);
159 }
160
wrapWithStyleNode(CSSStyleDeclaration * style,Document * document,bool isBlock)161 void StyledMarkupAccumulator::wrapWithStyleNode(CSSStyleDeclaration* style, Document* document, bool isBlock)
162 {
163 // All text-decoration-related elements should have been treated as special ancestors
164 // If we ever hit this ASSERT, we should export StyleChange in ApplyStyleCommand and use it here
165 ASSERT(propertyMissingOrEqualToNone(style, CSSPropertyTextDecoration) && propertyMissingOrEqualToNone(style, CSSPropertyWebkitTextDecorationsInEffect));
166 DEFINE_STATIC_LOCAL(const String, divStyle, ("<div style=\""));
167 DEFINE_STATIC_LOCAL(const String, divClose, ("</div>"));
168 DEFINE_STATIC_LOCAL(const String, styleSpanOpen, ("<span class=\"" AppleStyleSpanClass "\" style=\""));
169 DEFINE_STATIC_LOCAL(const String, styleSpanClose, ("</span>"));
170 Vector<UChar> openTag;
171 append(openTag, isBlock ? divStyle : styleSpanOpen);
172 appendAttributeValue(openTag, style->cssText(), document->isHTMLDocument());
173 openTag.append('\"');
174 openTag.append('>');
175 m_reversedPrecedingMarkup.append(String::adopt(openTag));
176 appendString(isBlock ? divClose : styleSpanClose);
177 }
178
takeResults()179 String StyledMarkupAccumulator::takeResults()
180 {
181 Vector<UChar> result;
182 result.reserveInitialCapacity(totalLength(m_reversedPrecedingMarkup) + length());
183
184 for (size_t i = m_reversedPrecedingMarkup.size(); i > 0; --i)
185 append(result, m_reversedPrecedingMarkup[i - 1]);
186
187 concatenateMarkup(result);
188
189 // We remove '\0' characters because they are not visibly rendered to the user.
190 return String::adopt(result).replace(0, "");
191 }
192
appendText(Vector<UChar> & out,Text * text)193 void StyledMarkupAccumulator::appendText(Vector<UChar>& out, Text* text)
194 {
195 if (!shouldAnnotate() || (text->parentElement() && text->parentElement()->tagQName() == textareaTag)) {
196 MarkupAccumulator::appendText(out, text);
197 return;
198 }
199
200 bool useRenderedText = !enclosingNodeWithTag(firstPositionInNode(text), selectTag);
201 String content = useRenderedText ? renderedText(text, m_range) : stringValueForRange(text, m_range);
202 Vector<UChar> buffer;
203 appendCharactersReplacingEntities(buffer, content.characters(), content.length(), EntityMaskInPCDATA);
204 append(out, convertHTMLTextToInterchangeFormat(String::adopt(buffer), text));
205 }
206
renderedText(const Node * node,const Range * range)207 String StyledMarkupAccumulator::renderedText(const Node* node, const Range* range)
208 {
209 if (!node->isTextNode())
210 return String();
211
212 ExceptionCode ec;
213 const Text* textNode = static_cast<const Text*>(node);
214 unsigned startOffset = 0;
215 unsigned endOffset = textNode->length();
216
217 if (range && node == range->startContainer(ec))
218 startOffset = range->startOffset(ec);
219 if (range && node == range->endContainer(ec))
220 endOffset = range->endOffset(ec);
221
222 Position start(const_cast<Node*>(node), startOffset);
223 Position end(const_cast<Node*>(node), endOffset);
224 return plainText(Range::create(node->document(), start, end).get());
225 }
226
stringValueForRange(const Node * node,const Range * range)227 String StyledMarkupAccumulator::stringValueForRange(const Node* node, const Range* range)
228 {
229 if (!range)
230 return node->nodeValue();
231
232 String str = node->nodeValue();
233 ExceptionCode ec;
234 if (node == range->endContainer(ec))
235 str.truncate(range->endOffset(ec));
236 if (node == range->startContainer(ec))
237 str.remove(0, range->startOffset(ec));
238 return str;
239 }
240
styleFromMatchedRulesForElement(Element * element,bool authorOnly=true)241 static PassRefPtr<CSSMutableStyleDeclaration> styleFromMatchedRulesForElement(Element* element, bool authorOnly = true)
242 {
243 RefPtr<CSSMutableStyleDeclaration> style = CSSMutableStyleDeclaration::create();
244 RefPtr<CSSRuleList> matchedRules = element->document()->styleSelector()->styleRulesForElement(element, authorOnly);
245 if (matchedRules) {
246 for (unsigned i = 0; i < matchedRules->length(); i++) {
247 if (matchedRules->item(i)->type() == CSSRule::STYLE_RULE) {
248 RefPtr<CSSMutableStyleDeclaration> s = static_cast<CSSStyleRule*>(matchedRules->item(i))->style();
249 style->merge(s.get(), true);
250 }
251 }
252 }
253
254 return style.release();
255 }
256
appendElement(Vector<UChar> & out,Element * element,bool addDisplayInline,RangeFullySelectsNode rangeFullySelectsNode)257 void StyledMarkupAccumulator::appendElement(Vector<UChar>& out, Element* element, bool addDisplayInline, RangeFullySelectsNode rangeFullySelectsNode)
258 {
259 bool documentIsHTML = element->document()->isHTMLDocument();
260 appendOpenTag(out, element, 0);
261
262 NamedNodeMap* attributes = element->attributes();
263 unsigned length = attributes->length();
264 for (unsigned int i = 0; i < length; i++) {
265 Attribute* attribute = attributes->attributeItem(i);
266 // We'll handle the style attribute separately, below.
267 if (attribute->name() == styleAttr && element->isHTMLElement() && (shouldAnnotate() || addDisplayInline))
268 continue;
269 appendAttribute(out, element, *attribute, 0);
270 }
271
272 if (element->isHTMLElement() && (shouldAnnotate() || addDisplayInline)) {
273 RefPtr<CSSMutableStyleDeclaration> style = toHTMLElement(element)->getInlineStyleDecl()->copy();
274 if (shouldAnnotate()) {
275 RefPtr<CSSMutableStyleDeclaration> styleFromMatchedRules = styleFromMatchedRulesForElement(const_cast<Element*>(element));
276 // Styles from the inline style declaration, held in the variable "style", take precedence
277 // over those from matched rules.
278 styleFromMatchedRules->merge(style.get());
279 style = styleFromMatchedRules;
280
281 RefPtr<CSSComputedStyleDeclaration> computedStyleForElement = computedStyle(element);
282 RefPtr<CSSMutableStyleDeclaration> fromComputedStyle = CSSMutableStyleDeclaration::create();
283
284 {
285 CSSMutableStyleDeclaration::const_iterator end = style->end();
286 for (CSSMutableStyleDeclaration::const_iterator it = style->begin(); it != end; ++it) {
287 const CSSProperty& property = *it;
288 CSSValue* value = property.value();
289 // The property value, if it's a percentage, may not reflect the actual computed value.
290 // For example: style="height: 1%; overflow: visible;" in quirksmode
291 // FIXME: There are others like this, see <rdar://problem/5195123> Slashdot copy/paste fidelity problem
292 if (value->cssValueType() == CSSValue::CSS_PRIMITIVE_VALUE)
293 if (static_cast<CSSPrimitiveValue*>(value)->primitiveType() == CSSPrimitiveValue::CSS_PERCENTAGE)
294 if (RefPtr<CSSValue> computedPropertyValue = computedStyleForElement->getPropertyCSSValue(property.id()))
295 fromComputedStyle->addParsedProperty(CSSProperty(property.id(), computedPropertyValue));
296 }
297 }
298 style->merge(fromComputedStyle.get());
299 }
300 if (addDisplayInline)
301 style->setProperty(CSSPropertyDisplay, CSSValueInline, true);
302 // 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
303 // only the ones that affect it and the nodes within it.
304 if (rangeFullySelectsNode == DoesNotFullySelectNode)
305 removeExteriorStyles(style.get());
306 if (style->length() > 0) {
307 DEFINE_STATIC_LOCAL(const String, stylePrefix, (" style=\""));
308 append(out, stylePrefix);
309 appendAttributeValue(out, style->cssText(), documentIsHTML);
310 out.append('\"');
311 }
312 }
313
314 appendCloseTag(out, element);
315 }
316
removeExteriorStyles(CSSMutableStyleDeclaration * style)317 void StyledMarkupAccumulator::removeExteriorStyles(CSSMutableStyleDeclaration* style)
318 {
319 style->removeProperty(CSSPropertyFloat);
320 }
321
serializeNodes(Node * startNode,Node * pastEnd)322 Node* StyledMarkupAccumulator::serializeNodes(Node* startNode, Node* pastEnd)
323 {
324 Vector<Node*> ancestorsToClose;
325 Node* next;
326 Node* lastClosed = 0;
327 for (Node* n = startNode; n != pastEnd; n = next) {
328 // According to <rdar://problem/5730668>, it is possible for n to blow
329 // past pastEnd and become null here. This shouldn't be possible.
330 // This null check will prevent crashes (but create too much markup)
331 // and the ASSERT will hopefully lead us to understanding the problem.
332 ASSERT(n);
333 if (!n)
334 break;
335
336 next = n->traverseNextNode();
337 bool openedTag = false;
338
339 if (isBlock(n) && canHaveChildrenForEditing(n) && next == pastEnd)
340 // Don't write out empty block containers that aren't fully selected.
341 continue;
342
343 if (!n->renderer() && !enclosingNodeWithTag(firstPositionInOrBeforeNode(n), selectTag)) {
344 next = n->traverseNextSibling();
345 // Don't skip over pastEnd.
346 if (pastEnd && pastEnd->isDescendantOf(n))
347 next = pastEnd;
348 } else {
349 // Add the node to the markup if we're not skipping the descendants
350 appendStartTag(n);
351
352 // If node has no children, close the tag now.
353 if (!n->childNodeCount()) {
354 appendEndTag(n);
355 lastClosed = n;
356 } else {
357 openedTag = true;
358 ancestorsToClose.append(n);
359 }
360 }
361
362 // 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.
363 // FIXME: What happens if we just inserted open tag and reached the end?
364 if (!openedTag && (!n->nextSibling() || next == pastEnd)) {
365 // Close up the ancestors.
366 while (!ancestorsToClose.isEmpty()) {
367 Node* ancestor = ancestorsToClose.last();
368 if (next != pastEnd && next->isDescendantOf(ancestor))
369 break;
370 // Not at the end of the range, close ancestors up to sibling of next node.
371 appendEndTag(ancestor);
372 lastClosed = ancestor;
373 ancestorsToClose.removeLast();
374 }
375
376 // Surround the currently accumulated markup with markup for ancestors we never opened as we leave the subtree(s) rooted at those ancestors.
377 ContainerNode* nextParent = next ? next->parentNode() : 0;
378 if (next != pastEnd && n != nextParent) {
379 Node* lastAncestorClosedOrSelf = n->isDescendantOf(lastClosed) ? lastClosed : n;
380 for (ContainerNode* parent = lastAncestorClosedOrSelf->parentNode(); parent && parent != nextParent; parent = parent->parentNode()) {
381 // All ancestors that aren't in the ancestorsToClose list should either be a) unrendered:
382 if (!parent->renderer())
383 continue;
384 // or b) ancestors that we never encountered during a pre-order traversal starting at startNode:
385 ASSERT(startNode->isDescendantOf(parent));
386 wrapWithNode(parent);
387 lastClosed = parent;
388 }
389 }
390 }
391 }
392
393 return lastClosed;
394 }
395
ancestorToRetainStructureAndAppearance(Node * commonAncestor)396 static Node* ancestorToRetainStructureAndAppearance(Node* commonAncestor)
397 {
398 Node* commonAncestorBlock = enclosingBlock(commonAncestor);
399
400 if (!commonAncestorBlock)
401 return 0;
402
403 if (commonAncestorBlock->hasTagName(tbodyTag) || commonAncestorBlock->hasTagName(trTag)) {
404 ContainerNode* table = commonAncestorBlock->parentNode();
405 while (table && !table->hasTagName(tableTag))
406 table = table->parentNode();
407
408 return table;
409 }
410
411 if (commonAncestorBlock->hasTagName(listingTag)
412 || commonAncestorBlock->hasTagName(olTag)
413 || commonAncestorBlock->hasTagName(preTag)
414 || commonAncestorBlock->hasTagName(tableTag)
415 || commonAncestorBlock->hasTagName(ulTag)
416 || commonAncestorBlock->hasTagName(xmpTag)
417 || commonAncestorBlock->hasTagName(h1Tag)
418 || commonAncestorBlock->hasTagName(h2Tag)
419 || commonAncestorBlock->hasTagName(h3Tag)
420 || commonAncestorBlock->hasTagName(h4Tag)
421 || commonAncestorBlock->hasTagName(h5Tag))
422 return commonAncestorBlock;
423
424 return 0;
425 }
426
propertyMissingOrEqualToNone(CSSStyleDeclaration * style,int propertyID)427 static bool propertyMissingOrEqualToNone(CSSStyleDeclaration* style, int propertyID)
428 {
429 if (!style)
430 return false;
431 RefPtr<CSSValue> value = style->getPropertyCSSValue(propertyID);
432 if (!value)
433 return true;
434 if (!value->isPrimitiveValue())
435 return false;
436 return static_cast<CSSPrimitiveValue*>(value.get())->getIdent() == CSSValueNone;
437 }
438
needInterchangeNewlineAfter(const VisiblePosition & v)439 static bool needInterchangeNewlineAfter(const VisiblePosition& v)
440 {
441 VisiblePosition next = v.next();
442 Node* upstreamNode = next.deepEquivalent().upstream().deprecatedNode();
443 Node* downstreamNode = v.deepEquivalent().downstream().deprecatedNode();
444 // Add an interchange newline if a paragraph break is selected and a br won't already be added to the markup to represent it.
445 return isEndOfParagraph(v) && isStartOfParagraph(next) && !(upstreamNode->hasTagName(brTag) && upstreamNode == downstreamNode);
446 }
447
styleFromMatchedRulesAndInlineDecl(const Node * node)448 static PassRefPtr<CSSMutableStyleDeclaration> styleFromMatchedRulesAndInlineDecl(const Node* node)
449 {
450 if (!node->isHTMLElement())
451 return 0;
452
453 // FIXME: Having to const_cast here is ugly, but it is quite a bit of work to untangle
454 // the non-const-ness of styleFromMatchedRulesForElement.
455 HTMLElement* element = const_cast<HTMLElement*>(static_cast<const HTMLElement*>(node));
456 RefPtr<CSSMutableStyleDeclaration> style = styleFromMatchedRulesForElement(element);
457 RefPtr<CSSMutableStyleDeclaration> inlineStyleDecl = element->getInlineStyleDecl();
458 style->merge(inlineStyleDecl.get());
459 return style.release();
460 }
461
isElementPresentational(const Node * node)462 static bool isElementPresentational(const Node* node)
463 {
464 if (node->hasTagName(uTag) || node->hasTagName(sTag) || node->hasTagName(strikeTag)
465 || node->hasTagName(iTag) || node->hasTagName(emTag) || node->hasTagName(bTag) || node->hasTagName(strongTag))
466 return true;
467 RefPtr<CSSMutableStyleDeclaration> style = styleFromMatchedRulesAndInlineDecl(node);
468 if (!style)
469 return false;
470 return !propertyMissingOrEqualToNone(style.get(), CSSPropertyTextDecoration);
471 }
472
shouldIncludeWrapperForFullySelectedRoot(Node * fullySelectedRoot,CSSMutableStyleDeclaration * style)473 static bool shouldIncludeWrapperForFullySelectedRoot(Node* fullySelectedRoot, CSSMutableStyleDeclaration* style)
474 {
475 if (fullySelectedRoot->isElementNode() && static_cast<Element*>(fullySelectedRoot)->hasAttribute(backgroundAttr))
476 return true;
477
478 return style->getPropertyCSSValue(CSSPropertyBackgroundImage) || style->getPropertyCSSValue(CSSPropertyBackgroundColor);
479 }
480
highestAncestorToWrapMarkup(const Range * range,Node * fullySelectedRoot,EAnnotateForInterchange shouldAnnotate)481 static Node* highestAncestorToWrapMarkup(const Range* range, Node* fullySelectedRoot, EAnnotateForInterchange shouldAnnotate)
482 {
483 ExceptionCode ec;
484 Node* commonAncestor = range->commonAncestorContainer(ec);
485 ASSERT(commonAncestor);
486 Node* specialCommonAncestor = 0;
487 if (shouldAnnotate == AnnotateForInterchange) {
488 // Include ancestors that aren't completely inside the range but are required to retain
489 // the structure and appearance of the copied markup.
490 specialCommonAncestor = ancestorToRetainStructureAndAppearance(commonAncestor);
491
492 // Retain the Mail quote level by including all ancestor mail block quotes.
493 if (Node* highestMailBlockquote = highestEnclosingNodeOfType(firstPositionInOrBeforeNode(range->firstNode()), isMailBlockquote, CanCrossEditingBoundary))
494 specialCommonAncestor = highestMailBlockquote;
495 }
496
497 Node* checkAncestor = specialCommonAncestor ? specialCommonAncestor : commonAncestor;
498 if (checkAncestor->renderer()) {
499 Node* newSpecialCommonAncestor = highestEnclosingNodeOfType(firstPositionInNode(checkAncestor), &isElementPresentational);
500 if (newSpecialCommonAncestor)
501 specialCommonAncestor = newSpecialCommonAncestor;
502 }
503
504 // If a single tab is selected, commonAncestor will be a text node inside a tab span.
505 // If two or more tabs are selected, commonAncestor will be the tab span.
506 // In either case, if there is a specialCommonAncestor already, it will necessarily be above
507 // any tab span that needs to be included.
508 if (!specialCommonAncestor && isTabSpanTextNode(commonAncestor))
509 specialCommonAncestor = commonAncestor->parentNode();
510 if (!specialCommonAncestor && isTabSpanNode(commonAncestor))
511 specialCommonAncestor = commonAncestor;
512
513 if (Node *enclosingAnchor = enclosingNodeWithTag(firstPositionInNode(specialCommonAncestor ? specialCommonAncestor : commonAncestor), aTag))
514 specialCommonAncestor = enclosingAnchor;
515
516 if (shouldAnnotate == AnnotateForInterchange && fullySelectedRoot) {
517 RefPtr<CSSMutableStyleDeclaration> fullySelectedRootStyle = styleFromMatchedRulesAndInlineDecl(fullySelectedRoot);
518 if (shouldIncludeWrapperForFullySelectedRoot(fullySelectedRoot, fullySelectedRootStyle.get()))
519 specialCommonAncestor = fullySelectedRoot;
520 }
521 return specialCommonAncestor;
522 }
523
524 // FIXME: Shouldn't we omit style info when annotate == DoNotAnnotateForInterchange?
525 // 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)526 String createMarkup(const Range* range, Vector<Node*>* nodes, EAnnotateForInterchange shouldAnnotate, bool convertBlocksToInlines, EAbsoluteURLs shouldResolveURLs)
527 {
528 DEFINE_STATIC_LOCAL(const String, interchangeNewlineString, ("<br class=\"" AppleInterchangeNewline "\">"));
529
530 if (!range)
531 return "";
532
533 Document* document = range->ownerDocument();
534 if (!document)
535 return "";
536
537 // Disable the delete button so it's elements are not serialized into the markup,
538 // but make sure neither endpoint is inside the delete user interface.
539 Frame* frame = document->frame();
540 DeleteButtonController* deleteButton = frame ? frame->editor()->deleteButtonController() : 0;
541 RefPtr<Range> updatedRange = avoidIntersectionWithNode(range, deleteButton ? deleteButton->containerElement() : 0);
542 if (!updatedRange)
543 return "";
544
545 if (deleteButton)
546 deleteButton->disable();
547
548 ExceptionCode ec = 0;
549 bool collapsed = updatedRange->collapsed(ec);
550 ASSERT(!ec);
551 if (collapsed)
552 return "";
553 Node* commonAncestor = updatedRange->commonAncestorContainer(ec);
554 ASSERT(!ec);
555 if (!commonAncestor)
556 return "";
557
558 document->updateLayoutIgnorePendingStylesheets();
559
560 StyledMarkupAccumulator accumulator(nodes, shouldResolveURLs, shouldAnnotate, updatedRange.get());
561 Node* pastEnd = updatedRange->pastLastNode();
562
563 Node* startNode = updatedRange->firstNode();
564 VisiblePosition visibleStart(updatedRange->startPosition(), VP_DEFAULT_AFFINITY);
565 VisiblePosition visibleEnd(updatedRange->endPosition(), VP_DEFAULT_AFFINITY);
566 if (shouldAnnotate == AnnotateForInterchange && needInterchangeNewlineAfter(visibleStart)) {
567 if (visibleStart == visibleEnd.previous()) {
568 if (deleteButton)
569 deleteButton->enable();
570 return interchangeNewlineString;
571 }
572
573 accumulator.appendString(interchangeNewlineString);
574 startNode = visibleStart.next().deepEquivalent().deprecatedNode();
575
576 ExceptionCode ec = 0;
577 if (pastEnd && Range::compareBoundaryPoints(startNode, 0, pastEnd, 0, ec) >= 0) {
578 ASSERT(!ec);
579 if (deleteButton)
580 deleteButton->enable();
581 return interchangeNewlineString;
582 }
583 ASSERT(!ec);
584 }
585
586 Node* body = enclosingNodeWithTag(firstPositionInNode(commonAncestor), bodyTag);
587 Node* fullySelectedRoot = 0;
588 // FIXME: Do this for all fully selected blocks, not just the body.
589 if (body && areRangesEqual(VisibleSelection::selectionFromContentsOfNode(body).toNormalizedRange().get(), range))
590 fullySelectedRoot = body;
591
592 Node* specialCommonAncestor = highestAncestorToWrapMarkup(updatedRange.get(), fullySelectedRoot, shouldAnnotate);
593
594 Node* lastClosed = accumulator.serializeNodes(startNode, pastEnd);
595
596 if (specialCommonAncestor && lastClosed) {
597 // Also include all of the ancestors of lastClosed up to this special ancestor.
598 for (ContainerNode* ancestor = lastClosed->parentNode(); ancestor; ancestor = ancestor->parentNode()) {
599 if (ancestor == fullySelectedRoot && !convertBlocksToInlines) {
600 RefPtr<CSSMutableStyleDeclaration> fullySelectedRootStyle = styleFromMatchedRulesAndInlineDecl(fullySelectedRoot);
601
602 // Bring the background attribute over, but not as an attribute because a background attribute on a div
603 // appears to have no effect.
604 if (!fullySelectedRootStyle->getPropertyCSSValue(CSSPropertyBackgroundImage) && static_cast<Element*>(fullySelectedRoot)->hasAttribute(backgroundAttr))
605 fullySelectedRootStyle->setProperty(CSSPropertyBackgroundImage, "url('" + static_cast<Element*>(fullySelectedRoot)->getAttribute(backgroundAttr) + "')");
606
607 if (fullySelectedRootStyle->length()) {
608 // Reset the CSS properties to avoid an assertion error in addStyleMarkup().
609 // This assertion is caused at least when we select all text of a <body> element whose
610 // 'text-decoration' property is "inherit", and copy it.
611 if (!propertyMissingOrEqualToNone(fullySelectedRootStyle.get(), CSSPropertyTextDecoration))
612 fullySelectedRootStyle->setProperty(CSSPropertyTextDecoration, CSSValueNone);
613 if (!propertyMissingOrEqualToNone(fullySelectedRootStyle.get(), CSSPropertyWebkitTextDecorationsInEffect))
614 fullySelectedRootStyle->setProperty(CSSPropertyWebkitTextDecorationsInEffect, CSSValueNone);
615 accumulator.wrapWithStyleNode(fullySelectedRootStyle.get(), document, true);
616 }
617 } else {
618 // Since this node and all the other ancestors are not in the selection we want to set RangeFullySelectsNode to DoesNotFullySelectNode
619 // so that styles that affect the exterior of the node are not included.
620 accumulator.wrapWithNode(ancestor, convertBlocksToInlines, StyledMarkupAccumulator::DoesNotFullySelectNode);
621 }
622 if (nodes)
623 nodes->append(ancestor);
624
625 lastClosed = ancestor;
626
627 if (ancestor == specialCommonAncestor)
628 break;
629 }
630 }
631
632 // Add a wrapper span with the styles that all of the nodes in the markup inherit.
633 ContainerNode* parentOfLastClosed = lastClosed ? lastClosed->parentNode() : 0;
634 if (parentOfLastClosed && parentOfLastClosed->renderer()) {
635 RefPtr<EditingStyle> style = EditingStyle::create(parentOfLastClosed, EditingStyle::InheritablePropertiesAndBackgroundColorInEffect);
636
637 // Styles that Mail blockquotes contribute should only be placed on the Mail blockquote, to help
638 // us differentiate those styles from ones that the user has applied. This helps us
639 // get the color of content pasted into blockquotes right.
640 style->removeStyleAddedByNode(enclosingNodeOfType(firstPositionInNode(parentOfLastClosed), isMailBlockquote, CanCrossEditingBoundary));
641
642 if (!style->isEmpty())
643 accumulator.wrapWithStyleNode(style->style(), document);
644 }
645
646 // FIXME: The interchange newline should be placed in the block that it's in, not after all of the content, unconditionally.
647 if (shouldAnnotate == AnnotateForInterchange && needInterchangeNewlineAfter(visibleEnd.previous()))
648 accumulator.appendString(interchangeNewlineString);
649
650 if (deleteButton)
651 deleteButton->enable();
652
653 return accumulator.takeResults();
654 }
655
createFragmentFromMarkup(Document * document,const String & markup,const String & baseURL,FragmentScriptingPermission scriptingPermission)656 PassRefPtr<DocumentFragment> createFragmentFromMarkup(Document* document, const String& markup, const String& baseURL, FragmentScriptingPermission scriptingPermission)
657 {
658 // We use a fake body element here to trick the HTML parser to using the
659 // InBody insertion mode. Really, all this code is wrong and need to be
660 // changed not to use deprecatedCreateContextualFragment.
661 RefPtr<HTMLBodyElement> fakeBody = HTMLBodyElement::create(document);
662 // FIXME: This should not use deprecatedCreateContextualFragment
663 RefPtr<DocumentFragment> fragment = fakeBody->deprecatedCreateContextualFragment(markup, scriptingPermission);
664
665 if (fragment && !baseURL.isEmpty() && baseURL != blankURL() && baseURL != document->baseURL())
666 completeURLs(fragment.get(), baseURL);
667
668 return fragment.release();
669 }
670
createMarkup(const Node * node,EChildrenOnly childrenOnly,Vector<Node * > * nodes,EAbsoluteURLs shouldResolveURLs)671 String createMarkup(const Node* node, EChildrenOnly childrenOnly, Vector<Node*>* nodes, EAbsoluteURLs shouldResolveURLs)
672 {
673 if (!node)
674 return "";
675
676 HTMLElement* deleteButtonContainerElement = 0;
677 if (Frame* frame = node->document()->frame()) {
678 deleteButtonContainerElement = frame->editor()->deleteButtonController()->containerElement();
679 if (node->isDescendantOf(deleteButtonContainerElement))
680 return "";
681 }
682
683 MarkupAccumulator accumulator(nodes, shouldResolveURLs);
684 return accumulator.serializeNodes(const_cast<Node*>(node), deleteButtonContainerElement, childrenOnly);
685 }
686
fillContainerFromString(ContainerNode * paragraph,const String & string)687 static void fillContainerFromString(ContainerNode* paragraph, const String& string)
688 {
689 Document* document = paragraph->document();
690
691 ExceptionCode ec = 0;
692 if (string.isEmpty()) {
693 paragraph->appendChild(createBlockPlaceholderElement(document), ec);
694 ASSERT(!ec);
695 return;
696 }
697
698 ASSERT(string.find('\n') == notFound);
699
700 Vector<String> tabList;
701 string.split('\t', true, tabList);
702 String tabText = "";
703 bool first = true;
704 size_t numEntries = tabList.size();
705 for (size_t i = 0; i < numEntries; ++i) {
706 const String& s = tabList[i];
707
708 // append the non-tab textual part
709 if (!s.isEmpty()) {
710 if (!tabText.isEmpty()) {
711 paragraph->appendChild(createTabSpanElement(document, tabText), ec);
712 ASSERT(!ec);
713 tabText = "";
714 }
715 RefPtr<Node> textNode = document->createTextNode(stringWithRebalancedWhitespace(s, first, i + 1 == numEntries));
716 paragraph->appendChild(textNode.release(), ec);
717 ASSERT(!ec);
718 }
719
720 // there is a tab after every entry, except the last entry
721 // (if the last character is a tab, the list gets an extra empty entry)
722 if (i + 1 != numEntries)
723 tabText.append('\t');
724 else if (!tabText.isEmpty()) {
725 paragraph->appendChild(createTabSpanElement(document, tabText), ec);
726 ASSERT(!ec);
727 }
728
729 first = false;
730 }
731 }
732
isPlainTextMarkup(Node * node)733 bool isPlainTextMarkup(Node *node)
734 {
735 if (!node->isElementNode() || !node->hasTagName(divTag) || static_cast<Element*>(node)->attributes()->length())
736 return false;
737
738 if (node->childNodeCount() == 1 && (node->firstChild()->isTextNode() || (node->firstChild()->firstChild())))
739 return true;
740
741 return (node->childNodeCount() == 2 && isTabSpanTextNode(node->firstChild()->firstChild()) && node->firstChild()->nextSibling()->isTextNode());
742 }
743
createFragmentFromText(Range * context,const String & text)744 PassRefPtr<DocumentFragment> createFragmentFromText(Range* context, const String& text)
745 {
746 if (!context)
747 return 0;
748
749 Node* styleNode = context->firstNode();
750 if (!styleNode) {
751 styleNode = context->startPosition().deprecatedNode();
752 if (!styleNode)
753 return 0;
754 }
755
756 Document* document = styleNode->document();
757 RefPtr<DocumentFragment> fragment = document->createDocumentFragment();
758
759 if (text.isEmpty())
760 return fragment.release();
761
762 String string = text;
763 string.replace("\r\n", "\n");
764 string.replace('\r', '\n');
765
766 ExceptionCode ec = 0;
767 RenderObject* renderer = styleNode->renderer();
768 if (renderer && renderer->style()->preserveNewline()) {
769 fragment->appendChild(document->createTextNode(string), ec);
770 ASSERT(!ec);
771 if (string.endsWith("\n")) {
772 RefPtr<Element> element = createBreakElement(document);
773 element->setAttribute(classAttr, AppleInterchangeNewline);
774 fragment->appendChild(element.release(), ec);
775 ASSERT(!ec);
776 }
777 return fragment.release();
778 }
779
780 // A string with no newlines gets added inline, rather than being put into a paragraph.
781 if (string.find('\n') == notFound) {
782 fillContainerFromString(fragment.get(), string);
783 return fragment.release();
784 }
785
786 // Break string into paragraphs. Extra line breaks turn into empty paragraphs.
787 Node* blockNode = enclosingBlock(context->firstNode());
788 Element* block = static_cast<Element*>(blockNode);
789 bool useClonesOfEnclosingBlock = blockNode
790 && blockNode->isElementNode()
791 && !block->hasTagName(bodyTag)
792 && !block->hasTagName(htmlTag)
793 && block != editableRootForPosition(context->startPosition());
794
795 Vector<String> list;
796 string.split('\n', true, list); // true gets us empty strings in the list
797 size_t numLines = list.size();
798 for (size_t i = 0; i < numLines; ++i) {
799 const String& s = list[i];
800
801 RefPtr<Element> element;
802 if (s.isEmpty() && i + 1 == numLines) {
803 // For last line, use the "magic BR" rather than a P.
804 element = createBreakElement(document);
805 element->setAttribute(classAttr, AppleInterchangeNewline);
806 } else {
807 if (useClonesOfEnclosingBlock)
808 element = block->cloneElementWithoutChildren();
809 else
810 element = createDefaultParagraphElement(document);
811 fillContainerFromString(element.get(), s);
812 }
813 fragment->appendChild(element.release(), ec);
814 ASSERT(!ec);
815 }
816 return fragment.release();
817 }
818
createFragmentFromNodes(Document * document,const Vector<Node * > & nodes)819 PassRefPtr<DocumentFragment> createFragmentFromNodes(Document *document, const Vector<Node*>& nodes)
820 {
821 if (!document)
822 return 0;
823
824 // disable the delete button so it's elements are not serialized into the markup
825 if (document->frame())
826 document->frame()->editor()->deleteButtonController()->disable();
827
828 RefPtr<DocumentFragment> fragment = document->createDocumentFragment();
829
830 ExceptionCode ec = 0;
831 size_t size = nodes.size();
832 for (size_t i = 0; i < size; ++i) {
833 RefPtr<Element> element = createDefaultParagraphElement(document);
834 element->appendChild(nodes[i], ec);
835 ASSERT(!ec);
836 fragment->appendChild(element.release(), ec);
837 ASSERT(!ec);
838 }
839
840 if (document->frame())
841 document->frame()->editor()->deleteButtonController()->enable();
842
843 return fragment.release();
844 }
845
createFullMarkup(const Node * node)846 String createFullMarkup(const Node* node)
847 {
848 if (!node)
849 return String();
850
851 Document* document = node->document();
852 if (!document)
853 return String();
854
855 Frame* frame = document->frame();
856 if (!frame)
857 return String();
858
859 // FIXME: This is never "for interchange". Is that right?
860 String markupString = createMarkup(node, IncludeNode, 0);
861 Node::NodeType nodeType = node->nodeType();
862 if (nodeType != Node::DOCUMENT_NODE && nodeType != Node::DOCUMENT_TYPE_NODE)
863 markupString = frame->documentTypeString() + markupString;
864
865 return markupString;
866 }
867
createFullMarkup(const Range * range)868 String createFullMarkup(const Range* range)
869 {
870 if (!range)
871 return String();
872
873 Node* node = range->startContainer();
874 if (!node)
875 return String();
876
877 Document* document = node->document();
878 if (!document)
879 return String();
880
881 Frame* frame = document->frame();
882 if (!frame)
883 return String();
884
885 // FIXME: This is always "for interchange". Is that right? See the previous method.
886 return frame->documentTypeString() + createMarkup(range, 0, AnnotateForInterchange);
887 }
888
urlToMarkup(const KURL & url,const String & title)889 String urlToMarkup(const KURL& url, const String& title)
890 {
891 Vector<UChar> markup;
892 append(markup, "<a href=\"");
893 append(markup, url.string());
894 append(markup, "\">");
895 appendCharactersReplacingEntities(markup, title.characters(), title.length(), EntityMaskInPCDATA);
896 append(markup, "</a>");
897 return String::adopt(markup);
898 }
899
imageToMarkup(const KURL & url,Element * element)900 String imageToMarkup(const KURL& url, Element* element)
901 {
902 Vector<UChar> markup;
903 append(markup, "<img src=\"");
904 append(markup, url.string());
905 append(markup, "\"");
906
907 NamedNodeMap* attrs = element->attributes();
908 unsigned length = attrs->length();
909 for (unsigned i = 0; i < length; ++i) {
910 Attribute* attr = attrs->attributeItem(i);
911 if (attr->localName() == "src")
912 continue;
913 append(markup, " ");
914 append(markup, attr->localName());
915 append(markup, "=\"");
916 appendCharactersReplacingEntities(markup, attr->value().characters(), attr->value().length(), EntityMaskInAttributeValue);
917 append(markup, "\"");
918 }
919
920 append(markup, "/>");
921 return String::adopt(markup);
922 }
923
924 }
925