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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) | 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) |
4 * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010 Apple Inc. All rights reserv
ed. | 4 * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010 Apple Inc. All rights reserv
ed. |
5 * | 5 * |
6 * This library is free software; you can redistribute it and/or | 6 * This library is free software; you can redistribute it and/or |
7 * modify it under the terms of the GNU Library General Public | 7 * modify it under the terms of the GNU Library General Public |
8 * License as published by the Free Software Foundation; either | 8 * License as published by the Free Software Foundation; either |
9 * version 2 of the License, or (at your option) any later version. | 9 * version 2 of the License, or (at your option) any later version. |
10 * | 10 * |
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59 | 59 |
60 static inline bool pageIsBeingDismissed(Document* document) | 60 static inline bool pageIsBeingDismissed(Document* document) |
61 { | 61 { |
62 return document->pageDismissalEventBeingDispatched() != Document::NoDismissa
l; | 62 return document->pageDismissalEventBeingDispatched() != Document::NoDismissa
l; |
63 } | 63 } |
64 | 64 |
65 static ImageLoader::BypassMainWorldBehavior shouldBypassMainWorldCSP(ImageLoader
* loader) | 65 static ImageLoader::BypassMainWorldBehavior shouldBypassMainWorldCSP(ImageLoader
* loader) |
66 { | 66 { |
67 ASSERT(loader); | 67 ASSERT(loader); |
68 ASSERT(loader->element()); | 68 ASSERT(loader->element()); |
69 ASSERT(loader->element()->document().frame()); | 69 if (loader->element()->document().frame() && loader->element()->document().f
rame()->script().shouldBypassMainWorldCSP()) |
70 if (loader->element()->document().frame()->script().shouldBypassMainWorldCSP
()) | |
71 return ImageLoader::BypassMainWorldCSP; | 70 return ImageLoader::BypassMainWorldCSP; |
72 return ImageLoader::DoNotBypassMainWorldCSP; | 71 return ImageLoader::DoNotBypassMainWorldCSP; |
73 } | 72 } |
74 | 73 |
75 class ImageLoader::Task : public blink::WebThread::Task { | 74 class ImageLoader::Task : public blink::WebThread::Task { |
76 public: | 75 public: |
77 static PassOwnPtr<Task> create(ImageLoader* loader, UpdateFromElementBehavio
r updateBehavior) | 76 static PassOwnPtr<Task> create(ImageLoader* loader, UpdateFromElementBehavio
r updateBehavior) |
78 { | 77 { |
79 return adoptPtr(new Task(loader, updateBehavior)); | 78 return adoptPtr(new Task(loader, updateBehavior)); |
80 } | 79 } |
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269 newImage = createImageResourceForImageDocument(document, request); | 268 newImage = createImageResourceForImageDocument(document, request); |
270 else | 269 else |
271 newImage = document.fetcher()->fetchImage(request); | 270 newImage = document.fetcher()->fetchImage(request); |
272 | 271 |
273 if (!newImage && !pageIsBeingDismissed(&document)) { | 272 if (!newImage && !pageIsBeingDismissed(&document)) { |
274 crossSiteOrCSPViolationOccurred(imageSourceURL); | 273 crossSiteOrCSPViolationOccurred(imageSourceURL); |
275 dispatchErrorEvent(); | 274 dispatchErrorEvent(); |
276 } else { | 275 } else { |
277 clearFailedLoadURL(); | 276 clearFailedLoadURL(); |
278 } | 277 } |
279 } else if (!imageSourceURL.isNull()) { | 278 } else { |
280 // Fire an error event if the url string is not empty, but the KURL is. | 279 if (!imageSourceURL.isNull()) { |
281 dispatchErrorEvent(); | 280 // Fire an error event if the url string is not empty, but the KURL
is. |
| 281 dispatchErrorEvent(); |
| 282 } |
| 283 noImageResourceToLoad(); |
282 } | 284 } |
283 | 285 |
284 ImageResource* oldImage = m_image.get(); | 286 ImageResource* oldImage = m_image.get(); |
285 if (newImage != oldImage) { | 287 if (newImage != oldImage) { |
286 sourceImageChanged(); | 288 sourceImageChanged(); |
287 | 289 |
288 if (m_hasPendingLoadEvent) { | 290 if (m_hasPendingLoadEvent) { |
289 loadEventSender().cancelEvent(this); | 291 loadEventSender().cancelEvent(this); |
290 m_hasPendingLoadEvent = false; | 292 m_hasPendingLoadEvent = false; |
291 } | 293 } |
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316 } | 318 } |
317 | 319 |
318 if (RenderImageResource* imageResource = renderImageResource()) | 320 if (RenderImageResource* imageResource = renderImageResource()) |
319 imageResource->resetAnimation(); | 321 imageResource->resetAnimation(); |
320 | 322 |
321 // Only consider updating the protection ref-count of the Element immediatel
y before returning | 323 // Only consider updating the protection ref-count of the Element immediatel
y before returning |
322 // from this function as doing so might result in the destruction of this Im
ageLoader. | 324 // from this function as doing so might result in the destruction of this Im
ageLoader. |
323 updatedHasPendingEvent(); | 325 updatedHasPendingEvent(); |
324 } | 326 } |
325 | 327 |
326 void ImageLoader::updateFromElement(UpdateFromElementBehavior updateBehavior, Lo
adType loadType) | 328 void ImageLoader::updateFromElement(UpdateFromElementBehavior updateBehavior) |
327 { | 329 { |
328 AtomicString imageSourceURL = m_element->imageSourceURL(); | 330 AtomicString imageSourceURL = m_element->imageSourceURL(); |
329 m_suppressErrorEvents = (updateBehavior == UpdateSizeChanged); | 331 m_suppressErrorEvents = (updateBehavior == UpdateSizeChanged); |
330 | 332 |
331 if (updateBehavior == UpdateIgnorePreviousError) | 333 if (updateBehavior == UpdateIgnorePreviousError) |
332 clearFailedLoadURL(); | 334 clearFailedLoadURL(); |
333 | 335 |
334 if (!m_failedLoadURL.isEmpty() && imageSourceURL == m_failedLoadURL) | 336 if (!m_failedLoadURL.isEmpty() && imageSourceURL == m_failedLoadURL) |
335 return; | 337 return; |
336 | 338 |
337 // If we have a pending task, we have to clear it -- either we're | 339 // If we have a pending task, we have to clear it -- either we're |
338 // now loading immediately, or we need to reset the task's state. | 340 // now loading immediately, or we need to reset the task's state. |
339 if (m_pendingTask) { | 341 if (m_pendingTask) { |
340 m_pendingTask->clearLoader(); | 342 m_pendingTask->clearLoader(); |
341 m_pendingTask.clear(); | 343 m_pendingTask.clear(); |
342 } | 344 } |
343 | 345 |
344 KURL url = imageSourceToKURL(imageSourceURL); | 346 KURL url = imageSourceToKURL(imageSourceURL); |
345 if (imageSourceURL.isNull() || url.isNull() || shouldLoadImmediately(url, lo
adType)) { | 347 if (shouldLoadImmediately(url)) { |
346 doUpdateFromElement(DoNotBypassMainWorldCSP, updateBehavior); | 348 doUpdateFromElement(DoNotBypassMainWorldCSP, updateBehavior); |
347 return; | 349 return; |
348 } | 350 } |
349 enqueueImageLoadingMicroTask(updateBehavior); | 351 enqueueImageLoadingMicroTask(updateBehavior); |
350 } | 352 } |
351 | 353 |
352 KURL ImageLoader::imageSourceToKURL(AtomicString imageSourceURL) const | 354 KURL ImageLoader::imageSourceToKURL(AtomicString imageSourceURL) const |
353 { | 355 { |
354 KURL url; | 356 KURL url; |
355 | 357 |
356 // Don't load images for inactive documents. We don't want to slow down the | 358 // Don't load images for inactive documents. We don't want to slow down the |
357 // raw HTML parsing case by loading images we don't intend to display. | 359 // raw HTML parsing case by loading images we don't intend to display. |
358 Document& document = m_element->document(); | 360 Document& document = m_element->document(); |
359 if (!document.isActive()) | 361 if (!document.isActive()) |
360 return url; | 362 return url; |
361 | 363 |
362 // Do not load any image if the 'src' attribute is missing or if it is | 364 // Do not load any image if the 'src' attribute is missing or if it is |
363 // an empty string. | 365 // an empty string. |
364 if (!imageSourceURL.isNull() && !stripLeadingAndTrailingHTMLSpaces(imageSour
ceURL).isEmpty()) | 366 if (!imageSourceURL.isNull() && !stripLeadingAndTrailingHTMLSpaces(imageSour
ceURL).isEmpty()) |
365 url = document.completeURL(sourceURI(imageSourceURL)); | 367 url = document.completeURL(sourceURI(imageSourceURL)); |
366 return url; | 368 return url; |
367 } | 369 } |
368 | 370 |
369 bool ImageLoader::shouldLoadImmediately(const KURL& url, LoadType loadType) cons
t | 371 bool ImageLoader::shouldLoadImmediately(const KURL& url) const |
370 { | 372 { |
371 return (m_loadingImageDocument | 373 // We force any image loads which might require alt content through the asyn
chronous path so that we can add the shadow DOM |
372 || isHTMLObjectElement(m_element) | 374 // for the alt-text content when style recalc is over and DOM mutation is al
lowed again. |
373 || isHTMLEmbedElement(m_element) | 375 if (!url.isNull()) { |
374 || url.protocolIsData() | 376 Resource* resource = memoryCache()->resourceForURL(url, m_element->docum
ent().fetcher()->getCacheIdentifier()); |
375 || memoryCache()->resourceForURL(url, m_element->document().fetcher()->g
etCacheIdentifier()) | 377 if (resource && !resource->errorOccurred()) |
376 || loadType == ForceLoadImmediately); | 378 return true; |
| 379 } |
| 380 return (m_loadingImageDocument || isHTMLObjectElement(m_element) || isHTMLEm
bedElement(m_element) || url.protocolIsData()); |
377 } | 381 } |
378 | 382 |
379 void ImageLoader::notifyFinished(Resource* resource) | 383 void ImageLoader::notifyFinished(Resource* resource) |
380 { | 384 { |
381 WTF_LOG(Timers, "ImageLoader::notifyFinished %p; m_hasPendingLoadEvent=%d", | 385 WTF_LOG(Timers, "ImageLoader::notifyFinished %p; m_hasPendingLoadEvent=%d", |
382 this, m_hasPendingLoadEvent); | 386 this, m_hasPendingLoadEvent); |
383 | 387 |
384 ASSERT(m_failedLoadURL.isEmpty()); | 388 ASSERT(m_failedLoadURL.isEmpty()); |
385 ASSERT(resource == m_image.get()); | 389 ASSERT(resource == m_image.get()); |
386 | 390 |
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582 } | 586 } |
583 #endif | 587 #endif |
584 } | 588 } |
585 | 589 |
586 #if ENABLE(OILPAN) | 590 #if ENABLE(OILPAN) |
587 ImageLoader::ImageLoaderClientRemover::~ImageLoaderClientRemover() | 591 ImageLoader::ImageLoaderClientRemover::~ImageLoaderClientRemover() |
588 { | 592 { |
589 m_loader.willRemoveClient(m_client); | 593 m_loader.willRemoveClient(m_client); |
590 } | 594 } |
591 #endif | 595 #endif |
592 | |
593 } | 596 } |
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