bool MediaElementSession::canControlControlsManager(const HTMLMediaElement& element) const
{
if (!element.hasAudio()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No audio");
return false;
}
if (element.muted()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Muted");
return false;
}
if (element.ended()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Ended");
return false;
}
if (element.document().activeDOMObjectsAreSuspended()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: activeDOMObjectsAreSuspended()");
return false;
}
if (!playbackPermitted(element)) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Playback not permitted");
return false;
}
if (element.isVideo()) {
if (!element.renderer()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No renderer");
return false;
}
if (!element.hasVideo()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No video");
return false;
}
if (isElementLargeEnoughForMainContent(element)) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning TRUE: Is main content");
return true;
}
}
if (m_restrictions & RequireUserGestureToControlControlsManager && !ScriptController::processingUserGestureForMedia()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No user gesture");
return false;
}
LOG(Media, "MediaElementSession::canControlControlsManager - returning TRUE: All criteria met");
return true;
}
static bool isMainContent(const HTMLMediaElement& element)
{
if (!element.hasAudio() || !element.hasVideo())
return false;
// Elements which have not yet been laid out, or which are not yet in the DOM, cannot be main content.
RenderBox* renderer = downcast<RenderBox>(element.renderer());
if (!renderer)
return false;
if (!isElementLargeEnoughForMainContent(element))
return false;
// Elements which are hidden by style, or have been scrolled out of view, cannot be main content.
// But elements which have audio & video and are already playing should not stop playing because
// they are scrolled off the page.
if (renderer->style().visibility() != VISIBLE
|| (renderer->visibleInViewportState() != RenderElement::VisibleInViewport && !element.isPlaying())
) {
return false;
}
// Main content elements must be in the main frame.
Document& document = element.document();
if (!document.frame() || !document.frame()->isMainFrame())
return false;
MainFrame& mainFrame = document.frame()->mainFrame();
if (!mainFrame.view() || !mainFrame.view()->renderView())
return false;
RenderView& mainRenderView = *mainFrame.view()->renderView();
// Hit test the area of the main frame where the element appears, to determine if the element is being obscured.
IntRect rectRelativeToView = element.clientRect();
ScrollPosition scrollPosition = mainFrame.view()->documentScrollPositionRelativeToViewOrigin();
IntRect rectRelativeToTopDocument(rectRelativeToView.location() + scrollPosition, rectRelativeToView.size());
HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::AllowChildFrameContent | HitTestRequest::IgnoreClipping | HitTestRequest::DisallowUserAgentShadowContent);
HitTestResult result(rectRelativeToTopDocument.center());
// Elements which are obscured by other elements cannot be main content.
mainRenderView.hitTest(request, result);
result.setToNonUserAgentShadowAncestor();
Element* hitElement = result.innerElement();
if (hitElement != &element)
return false;
return true;
}
bool MediaElementSession::canControlControlsManager(const HTMLMediaElement& element) const
{
if (!element.hasAudio())
return false;
if (!playbackPermitted(element))
return false;
RenderBox* renderer = downcast<RenderBox>(element.renderer());
if (!renderer)
return false;
if (isElementLargeEnoughForMainContent(element))
return true;
if (ScriptController::processingUserGestureForMedia())
return true;
return false;
}
bool MediaElementSession::canControlControlsManager() const
{
if (m_element.isFullscreen()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning TRUE: Is fullscreen");
return true;
}
if (!m_element.hasAudio()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No audio");
return false;
}
if (m_element.ended()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Ended");
return false;
}
if (m_element.document().activeDOMObjectsAreSuspended()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: activeDOMObjectsAreSuspended()");
return false;
}
if (!playbackPermitted(m_element)) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Playback not permitted");
return false;
}
if (!hasBehaviorRestriction(RequireUserGestureToControlControlsManager) || ScriptController::processingUserGestureForMedia()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning TRUE: No user gesture required");
return true;
}
if (hasBehaviorRestriction(RequirePlaybackToControlControlsManager) && !m_element.isPlaying()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Needs to be playing");
return false;
}
if (m_element.muted()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Muted");
return false;
}
if (m_element.isVideo()) {
if (!m_element.renderer()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No renderer");
return false;
}
if (m_element.document().isMediaDocument()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning TRUE: Is media document");
return true;
}
if (!m_element.hasVideo()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No video");
return false;
}
if (isElementLargeEnoughForMainContent(m_element)) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning TRUE: Is main content");
return true;
}
}
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No user gesture");
return false;
}
