CompositorProxy::CompositorProxy(uint64_t elementId, uint32_t attributeFlags)
: m_elementId(elementId)
, m_bitfieldsSupported(attributeFlags)
{
ASSERT(isControlThread());
ASSERT(sanityCheckAttributeFlags(m_bitfieldsSupported));
Platform::current()->mainThread()->taskRunner()->postTask(FROM_HERE, threadSafeBind(&incrementProxyCountForElement, m_elementId));
}
CompositorProxy::CompositorProxy(uint64_t elementId,
uint32_t compositorMutableProperties,
CompositorProxyClient* client)
: CompositorProxy(elementId, compositorMutableProperties) {
m_client = client;
DCHECK(m_client);
DCHECK(isControlThread());
m_client->registerCompositorProxy(this);
}
static bool raiseExceptionIfMutationNotAllowed(ExceptionState& exceptionState)
{
if (!isControlThread()) {
exceptionState.throwDOMException(NoModificationAllowedError, "Cannot mutate a proxy attribute from the main page.");
return true;
}
if (!isCallingCompositorFrameCallback()) {
exceptionState.throwDOMException(NoModificationAllowedError, "Cannot mutate a proxy attribute outside of a requestCompositorFrame callback.");
return true;
}
return false;
}
