C++ FrameLoader::end方法代码示例

bool InspectorBackend::addSourceToFrame(const String& mimeType, const String& source, Node* frameNode)
{
    ASSERT_ARG(frameNode, frameNode);

    if (!frameNode)
        return false;

    if (!frameNode->attached()) {
        ASSERT_NOT_REACHED();
        return false;
    }

    ASSERT(frameNode->isElementNode());
    if (!frameNode->isElementNode())
        return false;

    Element* element = static_cast<Element*>(frameNode);
    ASSERT(element->isFrameOwnerElement());
    if (!element->isFrameOwnerElement())
        return false;

    HTMLFrameOwnerElement* frameOwner = static_cast<HTMLFrameOwnerElement*>(element);
    ASSERT(frameOwner->contentFrame());
    if (!frameOwner->contentFrame())
        return false;

    FrameLoader* loader = frameOwner->contentFrame()->loader();

    loader->setResponseMIMEType(mimeType);
    loader->begin();
    loader->write(source);
    loader->end();

    return true;
}

bool SVGImage::dataChanged(bool allDataReceived)
{
    // Don't do anything if is an empty image.
    if (!data()->size())
        return true;

    if (allDataReceived) {
        static FrameLoaderClient* dummyFrameLoaderClient =  new EmptyFrameLoaderClient;
        static EditorClient* dummyEditorClient = new EmptyEditorClient;
#if ENABLE(CONTEXT_MENUS)
        static ContextMenuClient* dummyContextMenuClient = new EmptyContextMenuClient;
#else
        static ContextMenuClient* dummyContextMenuClient = 0;
#endif
#if ENABLE(DRAG_SUPPORT)
        static DragClient* dummyDragClient = new EmptyDragClient;
#else
        static DragClient* dummyDragClient = 0;
#endif
        static InspectorClient* dummyInspectorClient = new EmptyInspectorClient;

        m_chromeClient.set(new SVGImageChromeClient(this));
        
        // FIXME: If this SVG ends up loading itself, we might leak the world.
        // The comment said that the Cache code does not know about CachedImages
        // holding Frames and won't know to break the cycle. But 
        m_page.set(new Page(m_chromeClient.get(), dummyContextMenuClient, dummyEditorClient, dummyDragClient, dummyInspectorClient, 0, 0));
        m_page->settings()->setMediaEnabled(false);
        m_page->settings()->setJavaScriptEnabled(false);
        m_page->settings()->setPluginsEnabled(false);

        RefPtr<Frame> frame = Frame::create(m_page.get(), 0, dummyFrameLoaderClient);
        frame->setView(FrameView::create(frame.get()));
        frame->init();
        ResourceRequest fakeRequest(KURL(ParsedURLString, ""));
        FrameLoader* loader = frame->loader();
        loader->setForceSandboxFlags(SandboxAll);
        loader->load(fakeRequest, false); // Make sure the DocumentLoader is created
        loader->policyChecker()->cancelCheck(); // cancel any policy checks
        loader->commitProvisionalLoad(0);
        loader->setResponseMIMEType("image/svg+xml");
        loader->begin(KURL()); // create the empty document
        loader->write(data()->data(), data()->size());
        loader->end();
        frame->view()->setTransparent(true); // SVG Images are transparent.
    }

    return m_page;
}

static JSValueRef addSourceToFrame(JSContextRef ctx, JSObjectRef /*function*/, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* /*exception*/)
{
    JSValueRef undefined = JSValueMakeUndefined(ctx);

    InspectorController* controller = reinterpret_cast<InspectorController*>(JSObjectGetPrivate(thisObject));
    if (argumentCount < 2 || !controller)
        return undefined;

    JSValueRef identifierValue = arguments[0];
    if (!JSValueIsNumber(ctx, identifierValue))
        return undefined;

    unsigned long identifier = static_cast<unsigned long>(JSValueToNumber(ctx, identifierValue, 0));
    RefPtr<InspectorResource> resource = controller->resources().get(identifier);
    ASSERT(resource);
    if (!resource)
        return undefined;

    RefPtr<SharedBuffer> buffer;
    if (resource->requestURL == resource->loader->requestURL())
        buffer = resource->loader->mainResourceData();
    else {
        FrameLoader* frameLoader = resource->loader->frameLoader();
        if (!frameLoader)
            return undefined;

        Document* doc = frameLoader->frame()->document();
        if (!doc)
            return undefined;

        CachedResource* cachedResource = doc->docLoader()->cachedResource(resource->requestURL.url());
        if (!cachedResource)
            return undefined;

        buffer = cachedResource->data();
    }

    if (!buffer)
        return undefined;

    String textEncodingName = resource->loader->overrideEncoding();
    if (!textEncodingName)
        textEncodingName = resource->textEncodingName;

    TextEncoding encoding(textEncodingName);
    if (!encoding.isValid())
        encoding = WindowsLatin1Encoding();
    String sourceString = encoding.decode(buffer->data(), buffer->size());

    Node* node = toNode(toJS(arguments[1]));
    ASSERT(node);
    if (!node)
        return undefined;

    if (!node->attached()) {
        ASSERT_NOT_REACHED();
        return undefined;
    }

    ASSERT(node->isElementNode());
    if (!node->isElementNode())
        return undefined;

    Element* element = static_cast<Element*>(node);
    ASSERT(element->isFrameOwnerElement());
    if (!element->isFrameOwnerElement())
        return undefined;

    HTMLFrameOwnerElement* frameOwner = static_cast<HTMLFrameOwnerElement*>(element);
    ASSERT(frameOwner->contentFrame());
    if (!frameOwner->contentFrame())
        return undefined;

    FrameLoader* loader = frameOwner->contentFrame()->loader();

    loader->setResponseMIMEType(resource->mimeType);
    loader->begin();
    loader->write(sourceString);
    loader->end();

    return undefined;
}