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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 if (loader->element()->document().frame() && loader->element()->document().f
rame()->script().shouldBypassMainWorldCSP()) | 69 ASSERT(loader->element()->document().frame()); |
| 70 if (loader->element()->document().frame()->script().shouldBypassMainWorldCSP
()) |
70 return ImageLoader::BypassMainWorldCSP; | 71 return ImageLoader::BypassMainWorldCSP; |
71 return ImageLoader::DoNotBypassMainWorldCSP; | 72 return ImageLoader::DoNotBypassMainWorldCSP; |
72 } | 73 } |
73 | 74 |
74 class ImageLoader::Task : public blink::WebThread::Task { | 75 class ImageLoader::Task : public blink::WebThread::Task { |
75 public: | 76 public: |
76 static PassOwnPtr<Task> create(ImageLoader* loader, UpdateFromElementBehavio
r updateBehavior) | 77 static PassOwnPtr<Task> create(ImageLoader* loader, UpdateFromElementBehavio
r updateBehavior) |
77 { | 78 { |
78 return adoptPtr(new Task(loader, updateBehavior)); | 79 return adoptPtr(new Task(loader, updateBehavior)); |
79 } | 80 } |
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262 | 263 |
263 if (m_loadingImageDocument) | 264 if (m_loadingImageDocument) |
264 newImage = createImageResourceForImageDocument(document, request); | 265 newImage = createImageResourceForImageDocument(document, request); |
265 else | 266 else |
266 newImage = document.fetcher()->fetchImage(request); | 267 newImage = document.fetcher()->fetchImage(request); |
267 | 268 |
268 if (!newImage && !pageIsBeingDismissed(&document)) | 269 if (!newImage && !pageIsBeingDismissed(&document)) |
269 crossSiteOrCSPViolationOccured(imageSourceURL); | 270 crossSiteOrCSPViolationOccured(imageSourceURL); |
270 else | 271 else |
271 clearFailedLoadURL(); | 272 clearFailedLoadURL(); |
272 } else { | 273 } else if (!imageSourceURL.isNull()) { |
273 if (!imageSourceURL.isNull()) { | 274 // Fire an error event if the url string is not empty, but the KURL is. |
274 // Fire an error event if the url string is not empty, but the KURL
is. | 275 m_hasPendingErrorEvent = true; |
275 m_hasPendingErrorEvent = true; | 276 errorEventSender().dispatchEventSoon(this); |
276 errorEventSender().dispatchEventSoon(this); | |
277 } | |
278 noImageResourceToLoad(); | |
279 } | 277 } |
280 | 278 |
281 ImageResource* oldImage = m_image.get(); | 279 ImageResource* oldImage = m_image.get(); |
282 if (newImage != oldImage) { | 280 if (newImage != oldImage) { |
283 sourceImageChanged(); | 281 sourceImageChanged(); |
284 | 282 |
285 if (m_hasPendingLoadEvent) { | 283 if (m_hasPendingLoadEvent) { |
286 loadEventSender().cancelEvent(this); | 284 loadEventSender().cancelEvent(this); |
287 m_hasPendingLoadEvent = false; | 285 m_hasPendingLoadEvent = false; |
288 } | 286 } |
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313 } | 311 } |
314 | 312 |
315 if (RenderImageResource* imageResource = renderImageResource()) | 313 if (RenderImageResource* imageResource = renderImageResource()) |
316 imageResource->resetAnimation(); | 314 imageResource->resetAnimation(); |
317 | 315 |
318 // Only consider updating the protection ref-count of the Element immediatel
y before returning | 316 // Only consider updating the protection ref-count of the Element immediatel
y before returning |
319 // from this function as doing so might result in the destruction of this Im
ageLoader. | 317 // from this function as doing so might result in the destruction of this Im
ageLoader. |
320 updatedHasPendingEvent(); | 318 updatedHasPendingEvent(); |
321 } | 319 } |
322 | 320 |
323 void ImageLoader::updateFromElement(UpdateFromElementBehavior updateBehavior) | 321 void ImageLoader::updateFromElement(UpdateFromElementBehavior updateBehavior, Lo
adType loadType) |
324 { | 322 { |
325 AtomicString imageSourceURL = m_element->imageSourceURL(); | 323 AtomicString imageSourceURL = m_element->imageSourceURL(); |
326 m_suppressErrorEvents = (updateBehavior == UpdateSizeChanged); | 324 m_suppressErrorEvents = (updateBehavior == UpdateSizeChanged); |
327 | 325 |
328 if (updateBehavior == UpdateIgnorePreviousError) | 326 if (updateBehavior == UpdateIgnorePreviousError) |
329 clearFailedLoadURL(); | 327 clearFailedLoadURL(); |
330 | 328 |
331 if (!m_failedLoadURL.isEmpty() && imageSourceURL == m_failedLoadURL) | 329 if (!m_failedLoadURL.isEmpty() && imageSourceURL == m_failedLoadURL) |
332 return; | 330 return; |
333 | 331 |
334 // If we have a pending task, we have to clear it -- either we're | 332 // If we have a pending task, we have to clear it -- either we're |
335 // now loading immediately, or we need to reset the task's state. | 333 // now loading immediately, or we need to reset the task's state. |
336 if (m_pendingTask) { | 334 if (m_pendingTask) { |
337 m_pendingTask->clearLoader(); | 335 m_pendingTask->clearLoader(); |
338 m_pendingTask.clear(); | 336 m_pendingTask.clear(); |
339 } | 337 } |
340 | 338 |
341 KURL url = imageSourceToKURL(imageSourceURL); | 339 KURL url = imageSourceToKURL(imageSourceURL); |
342 if (shouldLoadImmediately(url)) { | 340 if (imageSourceURL.isNull() || url.isNull() || shouldLoadImmediately(url, lo
adType)) { |
343 doUpdateFromElement(DoNotBypassMainWorldCSP, updateBehavior); | 341 doUpdateFromElement(DoNotBypassMainWorldCSP, updateBehavior); |
344 return; | 342 return; |
345 } | 343 } |
346 enqueueImageLoadingMicroTask(updateBehavior); | 344 enqueueImageLoadingMicroTask(updateBehavior); |
347 } | 345 } |
348 | 346 |
349 KURL ImageLoader::imageSourceToKURL(AtomicString imageSourceURL) const | 347 KURL ImageLoader::imageSourceToKURL(AtomicString imageSourceURL) const |
350 { | 348 { |
351 KURL url; | 349 KURL url; |
352 | 350 |
353 // Don't load images for inactive documents. We don't want to slow down the | 351 // Don't load images for inactive documents. We don't want to slow down the |
354 // raw HTML parsing case by loading images we don't intend to display. | 352 // raw HTML parsing case by loading images we don't intend to display. |
355 Document& document = m_element->document(); | 353 Document& document = m_element->document(); |
356 if (!document.isActive()) | 354 if (!document.isActive()) |
357 return url; | 355 return url; |
358 | 356 |
359 // Do not load any image if the 'src' attribute is missing or if it is | 357 // Do not load any image if the 'src' attribute is missing or if it is |
360 // an empty string. | 358 // an empty string. |
361 if (!imageSourceURL.isNull() && !stripLeadingAndTrailingHTMLSpaces(imageSour
ceURL).isEmpty()) | 359 if (!imageSourceURL.isNull() && !stripLeadingAndTrailingHTMLSpaces(imageSour
ceURL).isEmpty()) |
362 url = document.completeURL(sourceURI(imageSourceURL)); | 360 url = document.completeURL(sourceURI(imageSourceURL)); |
363 return url; | 361 return url; |
364 } | 362 } |
365 | 363 |
366 bool ImageLoader::shouldLoadImmediately(const KURL& url) const | 364 bool ImageLoader::shouldLoadImmediately(const KURL& url, LoadType loadType) cons
t |
367 { | 365 { |
368 // We force any image loads which might require alt content through the asyn
chronous path so that we can add the shadow DOM | 366 return (m_loadingImageDocument |
369 // for the alt-text content when style recalc is over and DOM mutation is al
lowed again. | 367 || isHTMLObjectElement(m_element) |
370 if (!url.isNull()) { | 368 || isHTMLEmbedElement(m_element) |
371 Resource* resource = memoryCache()->resourceForURL(url, m_element->docum
ent().fetcher()->getCacheIdentifier()); | 369 || url.protocolIsData() |
372 if (resource && !resource->errorOccurred()) | 370 || memoryCache()->resourceForURL(url, m_element->document().fetcher()->g
etCacheIdentifier()) |
373 return true; | 371 || loadType == ForceLoadImmediately); |
374 } | |
375 return (m_loadingImageDocument || isHTMLObjectElement(m_element) || isHTMLEm
bedElement(m_element) || url.protocolIsData()); | |
376 } | 372 } |
377 | 373 |
378 void ImageLoader::notifyFinished(Resource* resource) | 374 void ImageLoader::notifyFinished(Resource* resource) |
379 { | 375 { |
380 WTF_LOG(Timers, "ImageLoader::notifyFinished %p; m_hasPendingLoadEvent=%d", | 376 WTF_LOG(Timers, "ImageLoader::notifyFinished %p; m_hasPendingLoadEvent=%d", |
381 this, m_hasPendingLoadEvent); | 377 this, m_hasPendingLoadEvent); |
382 | 378 |
383 ASSERT(m_failedLoadURL.isEmpty()); | 379 ASSERT(m_failedLoadURL.isEmpty()); |
384 ASSERT(resource == m_image.get()); | 380 ASSERT(resource == m_image.get()); |
385 | 381 |
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580 } | 576 } |
581 #endif | 577 #endif |
582 } | 578 } |
583 | 579 |
584 #if ENABLE(OILPAN) | 580 #if ENABLE(OILPAN) |
585 ImageLoader::ImageLoaderClientRemover::~ImageLoaderClientRemover() | 581 ImageLoader::ImageLoaderClientRemover::~ImageLoaderClientRemover() |
586 { | 582 { |
587 m_loader.willRemoveClient(m_client); | 583 m_loader.willRemoveClient(m_client); |
588 } | 584 } |
589 #endif | 585 #endif |
| 586 |
590 } | 587 } |
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