void DOMTimer::fired()
{
    ScriptExecutionContext* context = scriptExecutionContext();
    timerNestingLevel = m_nestingLevel;
    
    UserGestureIndicator gestureIndicator(m_shouldForwardUserGesture ? DefinitelyProcessingUserGesture : PossiblyProcessingUserGesture);
    
    // Only the first execution of a multi-shot timer should get an affirmative user gesture indicator.
    m_shouldForwardUserGesture = false;

    InspectorInstrumentationCookie cookie = InspectorInstrumentation::willFireTimer(context, m_timeoutId);

    // Simple case for non-one-shot timers.
    if (isActive()) {
        double minimumInterval = context->minimumTimerInterval();
        if (repeatInterval() && repeatInterval() < minimumInterval) {
            m_nestingLevel++;
            if (m_nestingLevel >= maxTimerNestingLevel)
                augmentRepeatInterval(minimumInterval - repeatInterval());
        }

        // No access to member variables after this point, it can delete the timer.
        m_action->execute(context);

        InspectorInstrumentation::didFireTimer(cookie);

        return;
    }

    // Delete timer before executing the action for one-shot timers.
    OwnPtr<ScheduledAction> action = m_action.release();

    // No access to member variables after this point.
    delete this;

    action->execute(context);

    InspectorInstrumentation::didFireTimer(cookie);

    timerNestingLevel = 0;
}
Example #2
0
void DOMTimer::fired()
{
    ScriptExecutionContext* context = scriptExecutionContext();
    ASSERT(context);
#if PLATFORM(IOS)
    Document* document = nullptr;
    if (!context->isDocument()) {
        document = toDocument(context);
        ASSERT(!document->frame()->timersPaused());
    }
#endif
    timerNestingLevel = m_nestingLevel;
    ASSERT(!isSuspended());
    ASSERT(!context->activeDOMObjectsAreSuspended());
    UserGestureIndicator gestureIndicator(m_shouldForwardUserGesture ? DefinitelyProcessingUserGesture : PossiblyProcessingUserGesture);
    // Only the first execution of a multi-shot timer should get an affirmative user gesture indicator.
    m_shouldForwardUserGesture = false;

    InspectorInstrumentationCookie cookie = InspectorInstrumentation::willFireTimer(context, m_timeoutId);

    // Simple case for non-one-shot timers.
    if (isActive()) {
        double minimumInterval = context->minimumTimerInterval();
        if (repeatInterval() && repeatInterval() < minimumInterval) {
            m_nestingLevel++;
            if (m_nestingLevel >= maxTimerNestingLevel)
                augmentRepeatInterval(minimumInterval - repeatInterval());
        }

        // No access to member variables after this point, it can delete the timer.
        m_action->execute(context);

        InspectorInstrumentation::didFireTimer(cookie);

        return;
    }

    // Delete timer before executing the action for one-shot timers.
    OwnPtr<ScheduledAction> action = m_action.release();

    // No access to member variables after this point.
    delete this;

#if PLATFORM(IOS)
    bool shouldReportLackOfChanges;
    bool shouldBeginObservingChanges;
    if (document) {
        shouldReportLackOfChanges = WebThreadCountOfObservedContentModifiers() == 1;
        shouldBeginObservingChanges = WebThreadContainsObservedContentModifier(this);
    } else {
        shouldReportLackOfChanges = false;
        shouldBeginObservingChanges = false;
    }

    if (shouldBeginObservingChanges) {
        WKBeginObservingContentChanges(false);
        WebThreadRemoveObservedContentModifier(this);
    }
#endif

    action->execute(context);

#if PLATFORM(IOS)
    if (shouldBeginObservingChanges) {
        WKStopObservingContentChanges();

        if (WKObservedContentChange() == WKContentVisibilityChange || shouldReportLackOfChanges)
            if (document && document->page())
                document->page()->chrome().client().observedContentChange(document->frame());
    }
#endif

    InspectorInstrumentation::didFireTimer(cookie);

    timerNestingLevel = 0;
}