Exemplo n.º 1
0
void HTMLScriptRunner::executePendingScriptAndDispatchEvent(PendingScript& pendingScript)
{
    bool errorOccurred = false;
    ScriptSourceCode sourceCode = sourceFromPendingScript(pendingScript, errorOccurred);

    // Stop watching loads before executeScript to prevent recursion if the script reloads itself.
    if (pendingScript.cachedScript() && pendingScript.watchingForLoad())
        stopWatchingForLoad(pendingScript);

    // WebERA: Insert HB relation between the execution of a pending script and the load of the script
    if (HBIsCurrentEventActionValid() && pendingScript.cachedScript() && pendingScript.cachedScript()->isLoaded() && pendingScript.cachedScript()->getLoadingEventAction() != 0) {
        HBAddExplicitArc(pendingScript.cachedScript()->getLoadingEventAction(), HBCurrentEventAction());
    }

    // Clear the pending script before possible rentrancy from executeScript()
    RefPtr<Element> element = pendingScript.releaseElementAndClear();
    if (ScriptElement* scriptElement = toScriptElement(element.get())) {
        NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel);
        IgnoreDestructiveWriteCountIncrementer ignoreDestructiveWriteCountIncrementer(m_document);
        if (errorOccurred)
            scriptElement->dispatchErrorEvent();
        else {
            ASSERT(isExecutingScript());
            scriptElement->executeScript(sourceCode);
            element->dispatchEvent(createScriptLoadEvent());
        }
    }
    ASSERT(!m_scriptNestingLevel);
}
bool HTMLScriptRunner::isPendingScriptReady(const PendingScript& script)
{
    m_hasScriptsWaitingForStylesheets = !m_document->haveStylesheetsLoaded();
    if (m_hasScriptsWaitingForStylesheets)
        return false;
    if (script.cachedScript() && !script.cachedScript()->isLoaded())
        return false;
    return true;
}
ScriptSourceCode HTMLScriptRunner::sourceFromPendingScript(const PendingScript& script, bool& errorOccurred) const
{
    if (script.cachedScript()) {
        errorOccurred = script.cachedScript()->errorOccurred();
        ASSERT(script.cachedScript()->isLoaded());
        return ScriptSourceCode(script.cachedScript());
    }
    errorOccurred = false;
    return ScriptSourceCode(script.element()->textContent(), documentURLForScriptExecution(m_document), script.startingPosition());
}
Exemplo n.º 4
0
void HTMLScriptRunner::executePendingScriptAndDispatchEvent(PendingScript& pendingScript)
{
    bool errorOccurred = false;
    ScriptSourceCode sourceCode = sourceFromPendingScript(pendingScript, errorOccurred);

    // Stop watching loads before executeScript to prevent recursion if the script reloads itself.
    if (pendingScript.cachedScript() && pendingScript.watchingForLoad())
        stopWatchingForLoad(pendingScript);

    if (!isExecutingScript()) {
#if ENABLE(CUSTOM_ELEMENTS)
        CustomElementRegistry::deliverAllLifecycleCallbacks();
#endif
        MutationObserver::deliverAllMutations();
    }

    // Clear the pending script before possible rentrancy from executeScript()
    RefPtr<Element> element = pendingScript.releaseElementAndClear();
    if (ScriptElement* scriptElement = toScriptElement(element.get())) {
        NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel);
        IgnoreDestructiveWriteCountIncrementer ignoreDestructiveWriteCountIncrementer(m_document);
        if (errorOccurred)
            scriptElement->dispatchErrorEvent();
        else {
            ASSERT(isExecutingScript());
            scriptElement->executeScript(sourceCode);
            element->dispatchEvent(createScriptLoadEvent());
        }
    }
    ASSERT(!isExecutingScript());
}
void HTMLScriptRunner::requestDeferredScript(Element* element)
{
    PendingScript pendingScript;
    if (!requestPendingScript(pendingScript, element))
        return;

    ASSERT(pendingScript.cachedScript());
    m_scriptsToExecuteAfterParsing.append(pendingScript);
}
HTMLScriptRunner::~HTMLScriptRunner()
{
    // FIXME: Should we be passed a "done loading/parsing" callback sooner than destruction?
    if (m_parsingBlockingScript.cachedScript() && m_parsingBlockingScript.watchingForLoad())
        stopWatchingForLoad(m_parsingBlockingScript);

    while (!m_scriptsToExecuteAfterParsing.isEmpty()) {
        PendingScript pendingScript = m_scriptsToExecuteAfterParsing.takeFirst();
        if (pendingScript.cachedScript() && pendingScript.watchingForLoad())
            stopWatchingForLoad(pendingScript);
    }
}
void HTMLScriptRunner::executePendingScriptAndDispatchEvent(PendingScript& pendingScript)
{
    bool errorOccurred = false;
    ScriptSourceCode sourceCode = sourceFromPendingScript(pendingScript, errorOccurred);

    // Stop watching loads before executeScript to prevent recursion if the script reloads itself.
    if (pendingScript.cachedScript() && pendingScript.watchingForLoad())
        stopWatchingForLoad(pendingScript);

    // Clear the pending script before possible rentrancy from executeScript()
    RefPtr<Element> element = pendingScript.releaseElementAndClear();
    if (ScriptElement* scriptElement = toScriptElement(element.get())) {
        NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel);
        IgnoreDestructiveWriteCountIncrementer ignoreDestructiveWriteCountIncrementer(m_document);
        if (errorOccurred)
            element->dispatchEvent(createScriptErrorEvent());
        else {
            ASSERT(isExecutingScript());
            scriptElement->executeScript(sourceCode);
            element->dispatchEvent(createScriptLoadEvent());
        }
    }
    ASSERT(!m_scriptNestingLevel);
}
void HTMLScriptRunner::stopWatchingForLoad(PendingScript& pendingScript)
{
    ASSERT(pendingScript.watchingForLoad());
    m_host->stopWatchingForLoad(pendingScript.cachedScript());
    pendingScript.setWatchingForLoad(false);
}
void HTMLScriptRunner::watchForLoad(PendingScript& pendingScript)
{
    ASSERT(!pendingScript.watchingForLoad());
    m_host->watchForLoad(pendingScript.cachedScript());
    pendingScript.setWatchingForLoad(true);
}