webframe.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

    Frame* frame = core(this);
    if (!frame)
        return E_FAIL;

    AnimationController* controller = frame->animation();
    if (!controller)
        return E_FAIL;

    COMPtr<DOMNode> domNode(Query, node);
    if (!domNode)
        return E_FAIL;

    *animationWasRunning = controller->pauseAnimationAtTime(domNode->node()->renderer(), String(animationName, SysStringLen(animationName)), secondsFromNow);
    return S_OK;
}

HRESULT WebFrame::pauseTransition(BSTR propertyName, IDOMNode* node, double secondsFromNow, BOOL* transitionWasRunning)
{
    if (!node || !transitionWasRunning)
        return E_POINTER;

    *transitionWasRunning = FALSE;

    Frame* frame = core(this);
    if (!frame)
        return E_FAIL;

    AnimationController* controller = frame->animation();
    if (!controller)
        return E_FAIL;

    COMPtr<DOMNode> domNode(Query, node);
    if (!domNode)
        return E_FAIL;

    *transitionWasRunning = controller->pauseTransitionAtTime(domNode->node()->renderer(), String(propertyName, SysStringLen(propertyName)), secondsFromNow);
    return S_OK;
}

HRESULT WebFrame::numberOfActiveAnimations(UINT* number)
{
    if (!number)
        return E_POINTER;

    *number = 0;

    Frame* frame = core(this);
    if (!frame)
        return E_FAIL;

    AnimationController* controller = frame->animation();
    if (!controller)
        return E_FAIL;

    *number = controller->numberOfActiveAnimations();
    return S_OK;
}

HRESULT WebFrame::controlsInForm(IDOMElement* form, IDOMElement** controls, int* cControls)
{
    if (!form)
        return E_INVALIDARG;

    HTMLFormElement *formElement = formElementFromDOMElement(form);
    if (!formElement)
        return E_FAIL;

    int inCount = *cControls;
    int count = (int) formElement->formElements.size();
    *cControls = count;
    if (!controls)
        return S_OK;
    if (inCount < count)
        return E_FAIL;

    *cControls = 0;
    Vector<HTMLFormControlElement*>& elements = formElement->formElements;
    for (int i = 0; i < count; i++) {
        if (elements.at(i)->isEnumeratable()) { // Skip option elements, other duds
            controls[*cControls] = DOMElement::createInstance(elements.at(i));
            (*cControls)++;
        }
    }
    return S_OK;
}

HRESULT WebFrame::elementIsPassword(IDOMElement *element, bool *result)
{
    HTMLInputElement *inputElement = inputElementFromDOMElement(element);
    *result = inputElement != 0
        && inputElement->inputType() == HTMLInputElement::PASSWORD;
    return S_OK;
}

HRESULT WebFrame::searchForLabelsBeforeElement(const BSTR* labels, int cLabels, IDOMElement* beforeElement, BSTR* result)
{
    if (!result) {
        ASSERT_NOT_REACHED();
        return E_POINTER;
    }

    *result = 0;

    if (!cLabels)
        return S_OK;
    if (cLabels < 1)
        return E_INVALIDARG;

    Frame* coreFrame = core(this);
    if (!coreFrame)
        return E_FAIL;

    Vector<String> labelStrings(cLabels);
    for (int i=0; i<cLabels; i++)
        labelStrings[i] = String(labels[i], SysStringLen(labels[i]));
    Element *coreElement = elementFromDOMElement(beforeElement);
    if (!coreElement)
        return E_FAIL;

    String label = coreFrame->searchForLabelsBeforeElement(labelStrings, coreElement);
    
    *result = SysAllocStringLen(label.characters(), label.length());
    if (label.length() && !*result)
        return E_OUTOFMEMORY;
    return S_OK;
}

HRESULT WebFrame::matchLabelsAgainstElement(const BSTR* labels, int cLabels, IDOMElement* againstElement, BSTR* result)
{
    if (!result) {
        ASSERT_NOT_REACHED();
        return E_POINTER;
    }

    *result = 0;

    if (!cLabels)
        return S_OK;
    if (cLabels < 1)
        return E_INVALIDARG;

    Frame* coreFrame = core(this);
    if (!coreFrame)
        return E_FAIL;

    Vector<String> labelStrings(cLabels);
    for (int i=0; i<cLabels; i++)
        labelStrings[i] = String(labels[i], SysStringLen(labels[i]));
    Element *coreElement = elementFromDOMElement(againstElement);
    if (!coreElement)
        return E_FAIL;

    String label = coreFrame->matchLabelsAgainstElement(labelStrings, coreElement);
    
    *result = SysAllocStringLen(label.characters(), label.length());
    if (label.length() && !*result)
        return E_OUTOFMEMORY;
    return S_OK;
}

HRESULT WebFrame::canProvideDocumentSource(bool* result)
{
    HRESULT hr = S_OK;
    *result = false;

    COMPtr<IWebDataSource> dataSource;
    hr = WebFrame::dataSource(&dataSource);
    if (FAILED(hr))
        return hr;

    COMPtr<IWebURLResponse> urlResponse;
    hr = dataSource->response(&urlResponse);
    if (SUCCEEDED(hr) && urlResponse) {
        BSTR mimeTypeBStr;
        if (SUCCEEDED(urlResponse->MIMEType(&mimeTypeBStr))) {
            String mimeType(mimeTypeBStr, SysStringLen(mimeTypeBStr));
            *result = mimeType == "text/html" || WebCore::DOMImplementation::isXMLMIMEType(mimeType);
            SysFreeString(mimeTypeBStr);
        }
    }
    return hr;
}

void WebFrame::frameLoaderDestroyed()
{
    // The FrameLoader going away is equivalent to the Frame going away,
    // so we now need to clear our frame pointer.
    d->frame = 0;

    this->Release();
}

void WebFrame::makeRepresentation(DocumentLoader*)
{
    notImplemented();
}

void WebFrame::forceLayoutForNonHTML()
{
    notImplemented();
}

void WebFrame::setCopiesOnScroll()
{
    notImplemented();
}

void WebFrame::detachedFromParent2()
{
    notImplemented();
}

void WebFrame::detachedFromParent3()
{
    notImplemented();
}

void WebFrame::cancelPolicyCheck()
{
    if (d->m_policyListener) {
        d->m_policyListener->invalidate();
        d->m_policyListener = 0;
    }

    d->m_policyFunction = 0;
}

void WebFrame::dispatchWillSubmitForm(FramePolicyFunction function, PassRefPtr<FormState> formState)
{
    Frame* coreFrame = core(this);
    ASSERT(coreFrame);

    COMPtr<IWebFormDelegate> formDelegate;

    if (FAILED(d->webView->formDelegate(&formDelegate))) {
        (coreFrame->loader()->*function)(PolicyUse);
        return;
    }

    COMPtr<IDOMElement> formElement(AdoptCOM, DOMElement::createInstance(formState->form()));

    COMPtr<IPropertyBag> formValuesPropertyBag(AdoptCOM, COMPropertyBag<String>::createInstance(formState->values()));

    COMPtr<WebFrame> sourceFrame(kit(formState->sourceFrame()));
    if (SUCCEEDED(formDelegate->willSubmitForm(this, sourceFrame.get(), formElement.get(), formValuesPropertyBag.get(), setUpPolicyListener(function).get())))
        return;

    // FIXME: Add a sane default implementation
    (coreFrame->loader()->*function)(PolicyUse);
}

void WebFrame::revertToProvisionalState(DocumentLoader*)
{
    notImplemented();
}

void WebFrame::setMainFrameDocumentReady(bool)
{
    notImplemented();
}

void WebFrame::willChangeTitle(DocumentLoader*)
{
    notImplemented();
}

void WebFrame::didChangeTitle(DocumentLoader*)
{
    notImplemented();
}

bool WebFrame::canHandleRequest(const ResourceRequest& request) const
{
    return WebView::canHandleRequest(request);
}

bool WebFrame::canShowMIMEType(const String& /*MIMEType*/) const
{
    notImplemented();
    return true;
}

bool WebFrame::representationExistsForURLScheme(const String& /*URLScheme*/) const
{
    notImplemented();
    return false;
}

String WebFrame::generatedMIMETypeForURLScheme(const String& /*URLScheme*/) const
{
    notImplemented();
    ASSERT_NOT_REACHED();
    return String();
}

void WebFrame::frameLoadCompleted()
{
}

void WebFrame::restoreViewState()
{
}

void WebFrame::provisionalLoadStarted()
{
    notImplemented();
}

bool WebFrame::shouldTreatURLAsSameAsCurrent(const KURL&) const
{
    notImplemented();
    return false;
}

void WebFrame::addHistoryItemForFragmentScroll()
{
    notImplemented();
}

void WebFrame::didFinishLoad()
{
    notImplemented();
}

void WebFrame::prepareForDataSourceReplacement()
{
    notImplemented();
}

String WebFrame::userAgent(const KURL& url)
{
    return d->webView->userAgentForKURL(url);
}

void WebFrame::saveViewStateToItem(HistoryItem*)
{
}

ResourceError WebFrame::cancelledError(const ResourceRequest& request)
{
    // FIXME: Need ChickenCat to include CFNetwork/CFURLError.h to get these values
    // Alternatively, we could create our own error domain/codes.
    return ResourceError(String(WebURLErrorDomain), -999, request.url().string(), String());
}

ResourceError WebFrame::blockedError(const ResourceRequest& request)
{
    // FIXME: Need to implement the String descriptions for errors in the WebKitErrorDomain and have them localized
    return ResourceError(String(WebKitErrorDomain), WebKitErrorCannotUseRestrictedPort, request.url().string(), String());
}

ResourceError WebFrame::cannotShowURLError(const ResourceRequest& request)
{
    // FIXME: Need to implement the String descriptions for errors in the WebKitErrorDomain and have them localized
    return ResourceError(String(WebKitErrorDomain), WebKitErrorCannotShowURL, request.url().string(), String());
}

ResourceError WebFrame::interruptForPolicyChangeError(const ResourceRequest& request)
{
    // FIXME: Need to implement the String descriptions for errors in the WebKitErrorDomain and have them localized
    return ResourceError(String(WebKitErrorDomain), WebKitErrorFrameLoadInterruptedByPolicyChange, request.url().string(), String());
}

ResourceError WebFrame::cannotShowMIMETypeError(const ResourceResponse&)
{
    notImplemented();
    return ResourceError();
}

ResourceError WebFrame::fileDoesNotExistError(const ResourceResponse&)
{
    notImplemented();
    return ResourceError();
}

ResourceError WebFrame::pluginWillHandleLoadError(const ResourceResponse& response)
{
    return ResourceError(String(WebKitErrorDomain), WebKitErrorPlugInWillHandleLoad, response.url().string(), String());
}

bool WebFrame::shouldFallBack(const ResourceError& error)
{
    return error.errorCode() != WebURLErrorCancelled;
}

COMPtr<WebFramePolicyListener> WebFrame::setUpPolicyListener(WebCore::FramePolicyFunction function)
{
    // FIXME: <rdar://5634381> We need to support multiple active policy listeners.

    if (d->m_policyListener)
        d->m_policyListener->invalidate();

    Frame* coreFrame = core(this);
    ASSERT(coreFrame);

    d->m_policyListener.adoptRef(WebFramePolicyListener::createInstance(coreFrame));
    d->m_policyFunction = function;

    return d->m_policyListener;
}

void WebFrame::receivedPolicyDecision(PolicyAction action)
{
    ASSERT(d->m_policyListener);
    ASSERT(d->m_policyFunction);

    FramePolicyFunction function = d->m_policyFunction;

    d->m_policyListener = 0;
    d->m_policyFunction = 0;

    Frame* coreFrame = core(this);
    ASSERT(coreFrame);

    (coreFrame->loader()->*function)(action);
}

void WebFrame::dispatchDecidePolicyForMIMEType(FramePolicyFunction function, const String& mimeType, const ResourceRequest& request)
{
    Frame* coreFrame = core(this);
    ASSERT(coreFrame);

    COMPtr<IWebPolicyDelegate> policyDelegate;
    if (FAILED(d->webView->policyDelegate(&policyDelegate)))
        policyDelegate = DefaultPolicyDelegate::sharedInstance();

    COMPtr<IWebURLRequest> urlRequest(AdoptCOM, WebMutableURLRequest::createInstance(request));

    if (SUCCEEDED(policyDelegate->decidePolicyForMIMEType(d->webView, BString(mimeType), urlRequest.get(), this, setUpPolicyListener(function).get())))
        return;

    (coreFrame->loader()->*function)(PolicyUse);
}

void WebFrame::dispatchDecidePolicyForNewWindowAction(FramePolicyFunction function, const NavigationAction& action, const ResourceRequest& request, PassRefPtr<FormState> formState, const String& frameName)
{
    Frame* coreFrame = core(this);
    ASSERT(coreFrame);

    COMPtr<IWebPolicyDelegate> policyDelegate;
    if (FAILED(d->webView->policyDelegate(&policyDelegate)))
        policyDelegate = DefaultPolicyDelegate::sharedInstance();

    COMPtr<IWebURLRequest> urlRequest(AdoptCOM, WebMutableURLRequest::createInstance(request));
    COMPtr<WebActionPropertyBag> actionInformation(AdoptCOM, WebActionPropertyBag::createInstance(action, formState ? formState->form() : 0, coreFrame));

    if (SUCCEEDED(policyDelegate->decidePolicyForNewWindowAction(d->webView, actionInformation.get(), urlRequest.get(), BString(frameName), setUpPolicyListener(function).get())))
        return;

    (coreFrame->loader()->*function)(PolicyUse);
}

void WebFrame::dispatchDecidePolicyForNavigationAction(FramePolicyFunction function, const NavigationAction& action, const ResourceRequest& request, PassRefPtr<FormState> formState)
{
    Frame* coreFrame = core(this);
    ASSERT(coreFrame);

    COMPtr<IWebPolicyDelegate> policyDelegate;
    if (FAILED(d->webView->policyDelegate(&policyDelegate)))
        policyDelegate = DefaultPolicyDelegate::sharedInstance();

    COMPtr<IWebURLRequest> urlRequest(AdoptCOM, WebMutableURLRequest::createInstance(request));
    COMPtr<WebActionPropertyBag> actionInformation(AdoptCOM, WebActionPropertyBag::createInstance(action, formState ? formState->form() : 0, coreFrame));

    if (SUCCEEDED(policyDelegate->decidePolicyForNavigationAction(d->webView, actionInformation.get(), urlRequest.get(), this, setUpPolicyListener(function).get())))
        return;

    (coreFrame->loader()->*function)(PolicyUse);
}

void WebFrame::dispatchUnableToImplementPolicy(const ResourceError& error)
{
    COMPtr<IWebPolicyDelegate> policyDelegate;
    if (FAILED(d->webView->policyDelegate(&policyDelegate)))
        policyDelegate = DefaultPolicyDelegate::sharedInstance();

    COMPtr<IWebError> webError(AdoptCOM, WebError::createInstance(error));
    policyDelegate->unableToImplementPolicyWithError(d->webView, webError.get(), this);
}

void WebFrame::download(ResourceHandle* handle, const ResourceRequest& request, const ResourceRequest&, const ResourceResponse& response)
{
    COMPtr<IWebDownloadDelegate> downloadDelegate;
    COMPtr<IWebView> webView;
    if (SUCCEEDED(this->webView(&webView))) {
        if (FAILED(webView->downloadDelegate(&downloadDelegate))) {
            // If the WebView doesn't successfully provide a download delegate we'll pass a null one
            // into the WebDownload - which may or may not decide to use a DefaultDownloadDelegate
            LOG_ERROR("Failed to get downloadDelegate from WebView");
            downloadDelegate = 0;
        }
    }

    // Its the delegate's job to ref the WebDownload to keep it alive - otherwise it will be destroyed
    // when this method returns
    COMPtr<WebDownload> download;
    download.adoptRef(WebDownload::createInstance(handle, request, response, downloadDelegate.get()));
}

bool WebFrame::dispatchDidLoadResourceFromMemoryCache(DocumentLoader*, const ResourceRequest&, const ResourceResponse&, int /*length*/)
{
    notImplemented();
    return false;
}

void WebFrame::dispatchDidFailProvisionalLoad(const ResourceError& error)
{
    COMPtr<IWebFrameLoadDelegate> frameLoadDelegate;
    if (SUCCEEDED(d->webView->frameLoadDelegate(&frameLoadDelegate))) {
        COMPtr<IWebError> webError;
        webError.adoptRef(WebError::createInstance(error));
        frameLoadDelegate->didFailProvisionalLoadWithError(d->webView, webError.get(), this);
    }
}

void WebFrame::dispatchDidFailLoad(const ResourceError& error)
{
    COMPtr<IWebFrameLoadDelegate> frameLoadDelegate;
    if (SUCCEEDED(d->webView->frameLoadDelegate(&frameLoadDelegate))) {
        COMPtr<IWebError> webError;
        webError.adoptRef(WebError::createInstance(error));
        frameLoadDelegate->didFailLoadWithError(d->webView, webError.get(), this);
    }
}

void WebFrame::startDownload(const ResourceRequest&)
{
    notImplemented();
}