void IconController::startLoader()
{
// FIXME: We kick off the icon loader when the frame is done receiving its main resource.
// But we should instead do it when we're done parsing the head element.
if (!m_frame->loader()->isLoadingMainFrame())
return;
if (!iconDatabase().isEnabled())
return;
ASSERT(!m_frame->tree()->parent());
if (!documentCanHaveIcon(m_frame->document()->url()))
return;
KURL iconURL(url());
String urlString(iconURL.string());
if (urlString.isEmpty())
return;
// People who want to avoid loading images generally want to avoid loading all images, unless an exception has been made for site icons.
// Now that we've accounted for URL mapping, avoid starting the network load if images aren't set to display automatically.
Settings* settings = m_frame->settings();
if (settings && !settings->loadsImagesAutomatically() && !settings->loadsSiteIconsIgnoringImageLoadingSetting())
return;
// If we're reloading the page, always start the icon load now.
// FIXME: How can this condition ever be true?
if (m_frame->loader()->loadType() == FrameLoadTypeReload && m_frame->loader()->loadType() == FrameLoadTypeReloadFromOrigin) {
continueLoadWithDecision(IconLoadYes);
return;
}
if (iconDatabase().supportsAsynchronousMode()) {
// FIXME (<rdar://problem/9168605>) - We should support in-memory-only private browsing icons in asynchronous icon database mode.
if (iconDatabase().supportsAsynchronousMode() && m_frame->page()->settings()->privateBrowsingEnabled())
return;
m_frame->loader()->documentLoader()->getIconLoadDecisionForIconURL(urlString);
// Commit the icon url mapping to the database just in case we don't end up loading later.
commitToDatabase(iconURL);
return;
}
IconLoadDecision decision = iconDatabase().synchronousLoadDecisionForIconURL(urlString, m_frame->loader()->documentLoader());
if (decision == IconLoadUnknown) {
// In this case, we may end up loading the icon later, but we still want to commit the icon url mapping to the database
// just in case we don't end up loading later - if we commit the mapping a second time after the load, that's no big deal
// We also tell the client to register for the notification that the icon is received now so it isn't missed in case the
// icon is later read in from disk
LOG(IconDatabase, "IconController %p might load icon %s later", this, urlString.ascii().data());
m_waitingForLoadDecision = true;
m_frame->loader()->client()->registerForIconNotification();
commitToDatabase(iconURL);
return;
}
continueLoadWithDecision(decision);
}
// Callback for the old-style synchronous IconDatabase interface.
void IconController::loadDecisionReceived(IconLoadDecision iconLoadDecision)
{
if (!m_waitingForLoadDecision)
return;
LOG(IconDatabase, "IconController %p was told a load decision is available for its icon", this);
continueLoadWithDecision(iconLoadDecision);
m_waitingForLoadDecision = false;
}
