ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLImageElement* image, int sx, int sy, int sw, int sh, ExceptionState& exceptionState)
{
// This variant does not work in worker threads.
ASSERT(eventTarget.toDOMWindow());
if (!image->cachedImage()) {
exceptionState.throwDOMException(InvalidStateError, "No image can be retrieved from the provided element.");
return ScriptPromise();
}
if (image->cachedImage()->image()->isSVGImage()) {
exceptionState.throwDOMException(InvalidStateError, "The image element contains an SVG image, which is unsupported.");
return ScriptPromise();
}
if (!sw || !sh) {
exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width"));
return ScriptPromise();
}
if (!image->cachedImage()->image()->currentFrameHasSingleSecurityOrigin()) {
exceptionState.throwSecurityError("The source image contains image data from multiple origins.");
return ScriptPromise();
}
Document* document = eventTarget.toDOMWindow()->document();
if (!image->cachedImage()->passesAccessControlCheck(document->securityOrigin()) && document->securityOrigin()->taintsCanvas(image->src())) {
exceptionState.throwSecurityError("Cross-origin access to the source image is denied.");
return ScriptPromise();
}
// FIXME: make ImageBitmap creation asynchronous crbug.com/258082
return fulfillImageBitmap(scriptState, ImageBitmap::create(image, IntRect(sx, sy, sw, sh)));
}
ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLVideoElement* video, int sx, int sy, int sw, int sh, ExceptionState& exceptionState)
{
// This variant does not work in worker threads.
ASSERT(eventTarget.toDOMWindow());
if (video->networkState() == HTMLMediaElement::NETWORK_EMPTY) {
exceptionState.throwDOMException(InvalidStateError, "The provided element has not retrieved data.");
return ScriptPromise();
}
if (video->readyState() <= HTMLMediaElement::HAVE_METADATA) {
exceptionState.throwDOMException(InvalidStateError, "The provided element's player has no current data.");
return ScriptPromise();
}
if (!sw || !sh) {
exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width"));
return ScriptPromise();
}
if (!video->hasSingleSecurityOrigin()) {
exceptionState.throwSecurityError("The source video contains image data from multiple origins.");
return ScriptPromise();
}
if (!video->webMediaPlayer()->didPassCORSAccessCheck()
&& eventTarget.toDOMWindow()->document()->securityOrigin()->taintsCanvas(video->currentSrc())) {
exceptionState.throwSecurityError("Cross-origin access to the source video is denied.");
return ScriptPromise();
}
// FIXME: make ImageBitmap creation asynchronous crbug.com/258082
return fulfillImageBitmap(scriptState, ImageBitmap::create(video, IntRect(sx, sy, sw, sh)));
}
void EventQueue::dispatchEvent(PassRefPtr<Event> event)
{
EventTarget* eventTarget = event->target();
if (eventTarget->toDOMWindow())
eventTarget->toDOMWindow()->dispatchEvent(event, 0);
else
eventTarget->dispatchEvent(event);
}
void DOMWindowEventQueue::dispatchEvent(PassRefPtrWillBeRawPtr<Event> event)
{
EventTarget* eventTarget = event->target();
if (eventTarget->toDOMWindow())
eventTarget->toDOMWindow()->dispatchEvent(event, nullptr);
else
eventTarget->dispatchEvent(event);
}
bool ScriptExecutionContext::dispatchErrorEvent(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL, JSC::Exception* exception, CachedScript* cachedScript)
{
EventTarget* target = errorEventTarget();
if (!target)
return false;
#if PLATFORM(IOS)
if (target->toDOMWindow() && is<Document>(*this)) {
Settings* settings = downcast<Document>(*this).settings();
if (settings && !settings->shouldDispatchJavaScriptWindowOnErrorEvents())
return false;
}
#endif
String message = errorMessage;
int line = lineNumber;
int column = columnNumber;
String sourceName = sourceURL;
Deprecated::ScriptValue error = exception && exception->value() ? Deprecated::ScriptValue(vm(), exception->value()) : Deprecated::ScriptValue();
sanitizeScriptError(message, line, column, sourceName, error, cachedScript);
ASSERT(!m_inDispatchErrorEvent);
m_inDispatchErrorEvent = true;
Ref<ErrorEvent> errorEvent = ErrorEvent::create(message, sourceName, line, column, error);
target->dispatchEvent(errorEvent);
m_inDispatchErrorEvent = false;
return errorEvent->defaultPrevented();
}
void ScriptedAnimationController::dispatchEvents(const AtomicString& eventInterfaceFilter)
{
WillBeHeapVector<RefPtrWillBeMember<Event> > events;
if (eventInterfaceFilter.isEmpty()) {
events.swap(m_eventQueue);
m_perFrameEvents.clear();
} else {
WillBeHeapVector<RefPtrWillBeMember<Event> > remaining;
for (auto& event : m_eventQueue) {
if (event && event->interfaceName() == eventInterfaceFilter) {
m_perFrameEvents.remove(eventTargetKey(event.get()));
events.append(event.release());
} else {
remaining.append(event.release());
}
}
remaining.swap(m_eventQueue);
}
for (size_t i = 0; i < events.size(); ++i) {
EventTarget* eventTarget = events[i]->target();
// FIXME: we should figure out how to make dispatchEvent properly virtual to avoid
// special casting window.
// FIXME: We should not fire events for nodes that are no longer in the tree.
if (LocalDOMWindow* window = eventTarget->toDOMWindow())
window->dispatchEvent(events[i], nullptr);
else
eventTarget->dispatchEvent(events[i]);
InspectorInstrumentation::didRemoveEvent(eventTarget, events[i].get());
}
}
bool ScriptExecutionContext::dispatchErrorEvent(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL, CachedScript* cachedScript)
{
EventTarget* target = errorEventTarget();
if (!target)
return false;
#if PLATFORM(IOS)
if (target == target->toDOMWindow() && isDocument()) {
Settings* settings = static_cast<Document*>(this)->settings();
if (settings && !settings->shouldDispatchJavaScriptWindowOnErrorEvents())
return false;
}
#endif
String message = errorMessage;
int line = lineNumber;
int column = columnNumber;
String sourceName = sourceURL;
sanitizeScriptError(message, line, column, sourceName, cachedScript);
ASSERT(!m_inDispatchErrorEvent);
m_inDispatchErrorEvent = true;
RefPtr<ErrorEvent> errorEvent = ErrorEvent::create(message, sourceName, line, column);
target->dispatchEvent(errorEvent);
m_inDispatchErrorEvent = false;
return errorEvent->defaultPrevented();
}
void ReplayController::willDispatchEvent(const Event& event, Frame* frame)
{
EventTarget* target = event.target();
if (!target && !frame)
return;
Document* document = frame ? frame->document() : nullptr;
// Fetch the document from the event target, because the target could be detached.
if (Node* node = target->toNode())
document = node->inDocument() ? &node->document() : node->ownerDocument();
else if (DOMWindow* window = target->toDOMWindow())
document = window->document();
ASSERT(document);
InputCursor& cursor = document->inputCursor();
#if !LOG_DISABLED
bool eventIsUnrelated = !cursor.isCapturing() && !cursor.isReplaying();
logDispatchedDOMEvent(event, eventIsUnrelated);
#else
UNUSED_PARAM(cursor);
#endif
#if ENABLE_AGGRESSIVE_DETERMINISM_CHECKS
// To ensure deterministic JS execution, all DOM events must be dispatched deterministically.
// If these assertions fail, then this DOM event is being dispatched by a nondeterministic EventLoop
// cycle, and may cause program execution to diverge if any JS code runs because of the DOM event.
if (cursor.isCapturing() || cursor.isReplaying())
ASSERT(cursor.withinEventLoopInputExtent());
else if (cursor.isReplaying())
ASSERT(dispatcher().isDispatching());
#endif
}
void ScriptedAnimationController::dispatchEvents()
{
Vector<RefPtr<Event> > events;
events.swap(m_eventQueue);
m_perFrameEvents.clear();
for (size_t i = 0; i < events.size(); ++i) {
EventTarget* eventTarget = events[i]->target();
// FIXME: we should figure out how to make dispatchEvent properly virtual to avoid
// special casting window.
// FIXME: We should not fire events for nodes that are no longer in the tree.
if (LocalDOMWindow* window = eventTarget->toDOMWindow())
window->dispatchEvent(events[i], nullptr);
else
eventTarget->dispatchEvent(events[i]);
}
}
ScriptPromise HTMLVideoElement::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, int sx, int sy, int sw, int sh, const ImageBitmapOptions& options, ExceptionState& exceptionState)
{
ASSERT(eventTarget.toDOMWindow());
if (getNetworkState() == HTMLMediaElement::NETWORK_EMPTY) {
exceptionState.throwDOMException(InvalidStateError, "The provided element has not retrieved data.");
return ScriptPromise();
}
if (getReadyState() <= HTMLMediaElement::HAVE_METADATA) {
exceptionState.throwDOMException(InvalidStateError, "The provided element's player has no current data.");
return ScriptPromise();
}
if (!sw || !sh) {
exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width"));
return ScriptPromise();
}
return ImageBitmapSource::fulfillImageBitmap(scriptState, ImageBitmap::create(this, IntRect(sx, sy, sw, sh), eventTarget.toDOMWindow()->document(), options));
}
ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLCanvasElement* canvas, int sx, int sy, int sw, int sh, ExceptionState& exceptionState)
{
// This variant does not work in worker threads.
ASSERT(eventTarget.toDOMWindow());
if (!canvas->originClean()) {
exceptionState.throwSecurityError("The canvas element provided is tainted with cross-origin data.");
return ScriptPromise();
}
if (!sw || !sh) {
exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width"));
return ScriptPromise();
}
// FIXME: make ImageBitmap creation asynchronous crbug.com/258082
return fulfillImageBitmap(scriptState, canvas->isPaintable() ? ImageBitmap::create(canvas, IntRect(sx, sy, sw, sh)) : nullptr);
}
static void logDispatchedDOMEvent(const Event& event, bool eventIsUnrelated)
{
EventTarget* target = event.target();
if (!target)
return;
// A DOM event is unrelated if it is being dispatched to a document that is neither capturing nor replaying.
if (Node* node = target->toNode()) {
LOG(WebReplay, "%-20s --->%s DOM event: type=%s, target=%u/node[%p] %s\n", "ReplayEvents",
(eventIsUnrelated) ? "Unrelated" : "Dispatching",
event.type().string().utf8().data(),
frameIndexFromDocument((node->inDocument()) ? &node->document() : node->ownerDocument()),
node,
node->nodeName().utf8().data());
} else if (DOMWindow* window = target->toDOMWindow()) {
LOG(WebReplay, "%-20s --->%s DOM event: type=%s, target=%u/window[%p] %s\n", "ReplayEvents",
(eventIsUnrelated) ? "Unrelated" : "Dispatching",
event.type().string().utf8().data(),
frameIndexFromDocument(window->document()),
window,
window->location()->href().utf8().data());
}
}