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1 /* | 1 /* |
2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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52 #include "core/frame/LocalFrame.h" | 52 #include "core/frame/LocalFrame.h" |
53 #include "core/html/HTMLFrameElementBase.h" | 53 #include "core/html/HTMLFrameElementBase.h" |
54 #include "core/html/HTMLImageElement.h" | 54 #include "core/html/HTMLImageElement.h" |
55 #include "core/html/HTMLInputElement.h" | 55 #include "core/html/HTMLInputElement.h" |
56 #include "core/html/HTMLLinkElement.h" | 56 #include "core/html/HTMLLinkElement.h" |
57 #include "core/html/HTMLMetaElement.h" | 57 #include "core/html/HTMLMetaElement.h" |
58 #include "core/html/HTMLStyleElement.h" | 58 #include "core/html/HTMLStyleElement.h" |
59 #include "core/html/ImageDocument.h" | 59 #include "core/html/ImageDocument.h" |
60 #include "core/style/StyleFetchedImage.h" | 60 #include "core/style/StyleFetchedImage.h" |
61 #include "core/style/StyleImage.h" | 61 #include "core/style/StyleImage.h" |
| 62 #include "platform/Histogram.h" |
62 #include "platform/SerializedResource.h" | 63 #include "platform/SerializedResource.h" |
63 #include "platform/TraceEvent.h" | 64 #include "platform/TraceEvent.h" |
64 #include "platform/graphics/Image.h" | 65 #include "platform/graphics/Image.h" |
65 #include "platform/heap/Handle.h" | 66 #include "platform/heap/Handle.h" |
66 #include "wtf/HashSet.h" | 67 #include "wtf/HashSet.h" |
67 #include "wtf/text/CString.h" | 68 #include "wtf/text/CString.h" |
68 #include "wtf/text/StringBuilder.h" | 69 #include "wtf/text/StringBuilder.h" |
69 #include "wtf/text/TextEncoding.h" | 70 #include "wtf/text/TextEncoding.h" |
70 #include "wtf/text/WTFString.h" | 71 #include "wtf/text/WTFString.h" |
71 | 72 |
| 73 namespace { |
| 74 |
| 75 const int32_t secondsToMicroseconds = 1000 * 1000; |
| 76 const int32_t maxSerializationTimeUmaMicroseconds = 10 * secondsToMicroseconds; |
| 77 |
| 78 } // namespace |
| 79 |
72 namespace blink { | 80 namespace blink { |
73 | 81 |
74 static bool shouldIgnoreElement(const Element& element) | 82 static bool shouldIgnoreElement(const Element& element) |
75 { | 83 { |
76 if (isHTMLScriptElement(element)) | 84 if (isHTMLScriptElement(element)) |
77 return true; | 85 return true; |
78 if (isHTMLNoScriptElement(element)) | 86 if (isHTMLNoScriptElement(element)) |
79 return true; | 87 return true; |
80 return isHTMLMetaElement(element) && toHTMLMetaElement(element).computeEncod
ing().isValid(); | 88 return isHTMLMetaElement(element) && toHTMLMetaElement(element).computeEncod
ing().isValid(); |
81 } | 89 } |
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236 // documents which leads to bugs like <https://crbug.com/251898>. Not being | 244 // documents which leads to bugs like <https://crbug.com/251898>. Not being |
237 // able to rewrite URLs inside CSS documents means that resources imported from | 245 // able to rewrite URLs inside CSS documents means that resources imported from |
238 // url(...) statements in CSS might not work when rewriting links for the | 246 // url(...) statements in CSS might not work when rewriting links for the |
239 // "Webpage, Complete" method of saving a page. It will take some work but it | 247 // "Webpage, Complete" method of saving a page. It will take some work but it |
240 // needs to be done if we want to continue to support non-MHTML saved pages. | 248 // needs to be done if we want to continue to support non-MHTML saved pages. |
241 | 249 |
242 FrameSerializer::FrameSerializer( | 250 FrameSerializer::FrameSerializer( |
243 Vector<SerializedResource>& resources, | 251 Vector<SerializedResource>& resources, |
244 Delegate& delegate) | 252 Delegate& delegate) |
245 : m_resources(&resources) | 253 : m_resources(&resources) |
| 254 , m_isSerializingCss(false) |
246 , m_delegate(delegate) | 255 , m_delegate(delegate) |
247 { | 256 { |
248 } | 257 } |
249 | 258 |
250 void FrameSerializer::serializeFrame(const LocalFrame& frame) | 259 void FrameSerializer::serializeFrame(const LocalFrame& frame) |
251 { | 260 { |
252 TRACE_EVENT0("page-serialization", "FrameSerializer::serializeFrame"); | 261 TRACE_EVENT0("page-serialization", "FrameSerializer::serializeFrame"); |
253 ASSERT(frame.document()); | 262 ASSERT(frame.document()); |
254 Document& document = *frame.document(); | 263 Document& document = *frame.document(); |
255 KURL url = document.url(); | 264 KURL url = document.url(); |
256 | 265 |
257 // If frame is an image document, add the image and don't continue | 266 // If frame is an image document, add the image and don't continue |
258 if (document.isImageDocument()) { | 267 if (document.isImageDocument()) { |
259 ImageDocument& imageDocument = toImageDocument(document); | 268 ImageDocument& imageDocument = toImageDocument(document); |
260 addImageToResources(imageDocument.cachedImage(), url); | 269 addImageToResources(imageDocument.cachedImage(), url); |
261 return; | 270 return; |
262 } | 271 } |
263 | 272 |
264 TRACE_EVENT_BEGIN0("page-serialization", "FrameSerializer::serializeFrame HT
ML"); | |
265 HeapVector<Member<Node>> serializedNodes; | 273 HeapVector<Member<Node>> serializedNodes; |
266 SerializerMarkupAccumulator accumulator(m_delegate, document, serializedNode
s); | 274 { |
267 String text = serializeNodes<EditingStrategy>(accumulator, document, Include
Node); | 275 TRACE_EVENT0("page-serialization", "FrameSerializer::serializeFrame HTML
"); |
| 276 SCOPED_BLINK_UMA_HISTOGRAM_TIMER("PageSerialization.SerializationTime.Ht
ml"); |
| 277 SerializerMarkupAccumulator accumulator(m_delegate, document, serialized
Nodes); |
| 278 String text = serializeNodes<EditingStrategy>(accumulator, document, Inc
ludeNode); |
268 | 279 |
269 CString frameHTML = document.encoding().encode(text, WTF::EntitiesForUnencod
ables); | 280 CString frameHTML = document.encoding().encode(text, WTF::EntitiesForUne
ncodables); |
270 m_resources->append(SerializedResource(url, document.suggestedMIMEType(), Sh
aredBuffer::create(frameHTML.data(), frameHTML.length()))); | 281 m_resources->append(SerializedResource(url, document.suggestedMIMEType()
, SharedBuffer::create(frameHTML.data(), frameHTML.length()))); |
271 TRACE_EVENT_END0("page-serialization", "FrameSerializer::serializeFrame HTML
"); | 282 } |
272 | 283 |
273 for (Node* node: serializedNodes) { | 284 for (Node* node: serializedNodes) { |
274 ASSERT(node); | 285 ASSERT(node); |
275 if (!node->isElementNode()) | 286 if (!node->isElementNode()) |
276 continue; | 287 continue; |
277 | 288 |
278 Element& element = toElement(*node); | 289 Element& element = toElement(*node); |
279 // We have to process in-line style as it might contain some resources (
typically background images). | 290 // We have to process in-line style as it might contain some resources (
typically background images). |
280 if (element.isStyledElement()) { | 291 if (element.isStyledElement()) { |
281 retrieveResourcesForProperties(element.inlineStyle(), document); | 292 retrieveResourcesForProperties(element.inlineStyle(), document); |
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305 if (CSSStyleSheet* sheet = styleElement.sheet()) | 316 if (CSSStyleSheet* sheet = styleElement.sheet()) |
306 serializeCSSStyleSheet(*sheet, KURL()); | 317 serializeCSSStyleSheet(*sheet, KURL()); |
307 } | 318 } |
308 } | 319 } |
309 } | 320 } |
310 | 321 |
311 void FrameSerializer::serializeCSSStyleSheet(CSSStyleSheet& styleSheet, const KU
RL& url) | 322 void FrameSerializer::serializeCSSStyleSheet(CSSStyleSheet& styleSheet, const KU
RL& url) |
312 { | 323 { |
313 TRACE_EVENT2("page-serialization", "FrameSerializer::serializeCSSStyleSheet"
, | 324 TRACE_EVENT2("page-serialization", "FrameSerializer::serializeCSSStyleSheet"
, |
314 "type", "CSS", "url", url.elidedString().utf8().data()); | 325 "type", "CSS", "url", url.elidedString().utf8().data()); |
| 326 // Only report UMA metric if this is not a reentrant CSS serialization call. |
| 327 double cssStartTime = 0; |
| 328 if (!m_isSerializingCss) { |
| 329 m_isSerializingCss = true; |
| 330 cssStartTime = monotonicallyIncreasingTime(); |
| 331 } |
| 332 |
315 StringBuilder cssText; | 333 StringBuilder cssText; |
316 cssText.append("@charset \""); | 334 cssText.append("@charset \""); |
317 cssText.append(styleSheet.contents()->charset().lower()); | 335 cssText.append(styleSheet.contents()->charset().lower()); |
318 cssText.append("\";\n\n"); | 336 cssText.append("\";\n\n"); |
319 | 337 |
320 for (unsigned i = 0; i < styleSheet.length(); ++i) { | 338 for (unsigned i = 0; i < styleSheet.length(); ++i) { |
321 CSSRule* rule = styleSheet.item(i); | 339 CSSRule* rule = styleSheet.item(i); |
322 String itemText = rule->cssText(); | 340 String itemText = rule->cssText(); |
323 if (!itemText.isEmpty()) { | 341 if (!itemText.isEmpty()) { |
324 cssText.append(itemText); | 342 cssText.append(itemText); |
325 if (i < styleSheet.length() - 1) | 343 if (i < styleSheet.length() - 1) |
326 cssText.append("\n\n"); | 344 cssText.append("\n\n"); |
327 } | 345 } |
328 | 346 |
329 // Some rules have resources associated with them that we need to retrie
ve. | 347 // Some rules have resources associated with them that we need to retrie
ve. |
330 serializeCSSRule(rule); | 348 serializeCSSRule(rule); |
331 } | 349 } |
332 | 350 |
333 if (shouldAddURL(url)) { | 351 if (shouldAddURL(url)) { |
334 WTF::TextEncoding textEncoding(styleSheet.contents()->charset()); | 352 WTF::TextEncoding textEncoding(styleSheet.contents()->charset()); |
335 ASSERT(textEncoding.isValid()); | 353 ASSERT(textEncoding.isValid()); |
336 String textString = cssText.toString(); | 354 String textString = cssText.toString(); |
337 CString text = textEncoding.encode(textString, WTF::CSSEncodedEntitiesFo
rUnencodables); | 355 CString text = textEncoding.encode(textString, WTF::CSSEncodedEntitiesFo
rUnencodables); |
338 m_resources->append(SerializedResource(url, String("text/css"), SharedBu
ffer::create(text.data(), text.length()))); | 356 m_resources->append(SerializedResource(url, String("text/css"), SharedBu
ffer::create(text.data(), text.length()))); |
339 m_resourceURLs.add(url); | 357 m_resourceURLs.add(url); |
340 } | 358 } |
| 359 |
| 360 if (cssStartTime != 0) { |
| 361 m_isSerializingCss = false; |
| 362 DEFINE_STATIC_LOCAL(CustomCountHistogram, cssHistogram, ("PageSerializat
ion.SerializationTime.CSSElement", 0, maxSerializationTimeUmaMicroseconds, 50)); |
| 363 cssHistogram.count(static_cast<int64_t>((monotonicallyIncreasingTime() -
cssStartTime) * secondsToMicroseconds)); |
| 364 } |
341 } | 365 } |
342 | 366 |
343 void FrameSerializer::serializeCSSRule(CSSRule* rule) | 367 void FrameSerializer::serializeCSSRule(CSSRule* rule) |
344 { | 368 { |
345 ASSERT(rule->parentStyleSheet()->ownerDocument()); | 369 ASSERT(rule->parentStyleSheet()->ownerDocument()); |
346 Document& document = *rule->parentStyleSheet()->ownerDocument(); | 370 Document& document = *rule->parentStyleSheet()->ownerDocument(); |
347 | 371 |
348 switch (rule->type()) { | 372 switch (rule->type()) { |
349 case CSSRule::kStyleRule: | 373 case CSSRule::kStyleRule: |
350 retrieveResourcesForProperties(&toCSSStyleRule(rule)->styleRule()->prope
rties(), document); | 374 retrieveResourcesForProperties(&toCSSStyleRule(rule)->styleRule()->prope
rties(), document); |
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407 m_resourceURLs.add(url); | 431 m_resourceURLs.add(url); |
408 } | 432 } |
409 | 433 |
410 void FrameSerializer::addImageToResources(ImageResource* image, const KURL& url) | 434 void FrameSerializer::addImageToResources(ImageResource* image, const KURL& url) |
411 { | 435 { |
412 if (!image || !image->hasImage() || image->errorOccurred() || !shouldAddURL(
url)) | 436 if (!image || !image->hasImage() || image->errorOccurred() || !shouldAddURL(
url)) |
413 return; | 437 return; |
414 | 438 |
415 TRACE_EVENT2("page-serialization", "FrameSerializer::addImageToResources", | 439 TRACE_EVENT2("page-serialization", "FrameSerializer::addImageToResources", |
416 "type", "image", "url", url.elidedString().utf8().data()); | 440 "type", "image", "url", url.elidedString().utf8().data()); |
| 441 double imageStartTime = monotonicallyIncreasingTime(); |
| 442 |
417 RefPtr<const SharedBuffer> data = image->getImage()->data(); | 443 RefPtr<const SharedBuffer> data = image->getImage()->data(); |
418 addToResources(*image, data, url); | 444 addToResources(*image, data, url); |
| 445 |
| 446 // If we're already reporting time for CSS serialization don't report it for |
| 447 // this image to avoid reporting the same time twice. |
| 448 if (!m_isSerializingCss) { |
| 449 DEFINE_STATIC_LOCAL(CustomCountHistogram, imageHistogram, ("PageSerializ
ation.SerializationTime.ImageElement", 0, maxSerializationTimeUmaMicroseconds, 5
0)); |
| 450 imageHistogram.count(static_cast<int64_t>((monotonicallyIncreasingTime()
- imageStartTime) * secondsToMicroseconds)); |
| 451 } |
419 } | 452 } |
420 | 453 |
421 void FrameSerializer::addFontToResources(FontResource* font) | 454 void FrameSerializer::addFontToResources(FontResource* font) |
422 { | 455 { |
423 if (!font || !font->isLoaded() || !font->resourceBuffer() || !shouldAddURL(f
ont->url())) | 456 if (!font || !font->isLoaded() || !font->resourceBuffer() || !shouldAddURL(f
ont->url())) |
424 return; | 457 return; |
425 | 458 |
426 RefPtr<const SharedBuffer> data(font->resourceBuffer()); | 459 RefPtr<const SharedBuffer> data(font->resourceBuffer()); |
427 | 460 |
428 addToResources(*font, data, font->url()); | 461 addToResources(*font, data, font->url()); |
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484 continue; | 517 continue; |
485 } | 518 } |
486 emitsMinus = ch == '-'; | 519 emitsMinus = ch == '-'; |
487 builder.append(ch); | 520 builder.append(ch); |
488 } | 521 } |
489 CString escapedUrl = builder.toString().ascii(); | 522 CString escapedUrl = builder.toString().ascii(); |
490 return String::format("saved from url=(%04d)%s", static_cast<int>(escapedUrl
.length()), escapedUrl.data()); | 523 return String::format("saved from url=(%04d)%s", static_cast<int>(escapedUrl
.length()), escapedUrl.data()); |
491 } | 524 } |
492 | 525 |
493 } // namespace blink | 526 } // namespace blink |
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