void TextTrack::setMode(const AtomicString& mode)
{
// On setting, if the new value isn't equal to what the attribute would currently
// return, the new value must be processed as follows ...
if (mode != disabledKeyword() && mode != hiddenKeyword() && mode != showingKeyword())
return;
if (m_mode == mode)
return;
// If mode changes to disabled, remove this track's cues from the client
// because they will no longer be accessible from the cues() function.
if (mode == disabledKeyword() && m_client && m_cues)
m_client->textTrackRemoveCues(this, m_cues.get());
if (mode != showingKeyword() && m_cues)
for (size_t i = 0; i < m_cues->length(); ++i)
m_cues->item(i)->removeDisplayTree();
// ... Note: If the mode had been showing by default, this will change it to showing,
// even though the value of mode would appear not to change.
m_mode = mode;
setShowingByDefault(false);
if (m_client)
m_client->textTrackModeChanged(this);
}
void TextTrack::setMode(unsigned short mode, ExceptionCode& ec)
{
// 4.8.10.12.5 On setting the mode, if the new value is not either 0, 1, or 2,
// the user agent must throw an INVALID_ACCESS_ERR exception.
if (mode > TextTrack::SHOWING) {
ec = INVALID_ACCESS_ERR;
return;
}
if (m_mode == static_cast<Mode>(mode))
return;
// If mode changes to disabled, remove this track's cues from the client
// because they will no longer be accessible from the cues() function.
if (mode == TextTrack::DISABLED && m_client && m_cues)
m_client->textTrackRemoveCues(this, m_cues.get());
if (mode != TextTrack::SHOWING && m_cues)
for (size_t i = 0; i < m_cues->length(); ++i)
m_cues->item(i)->removeDisplayTree();
// ... Note: If the mode had been showing by default, this will change it to showing,
// even though the value of mode would appear not to change.
m_mode = static_cast<Mode>(mode);
setShowingByDefault(false);
if (m_client)
m_client->textTrackModeChanged(this);
}
