C++ WebLocalFrameImpl类代码示例

void TextFinder::flushCurrentScopingEffort(int identifier)
{
    if (!m_ownerFrame.frame() || !m_ownerFrame.frame()->page())
        return;

    WebLocalFrameImpl* mainFrameImpl = m_ownerFrame.viewImpl()->mainFrameImpl();
    mainFrameImpl->ensureTextFinder().decrementFramesScopingCount(identifier);
}

void TextFinder::findMatchRects(WebVector<WebFloatRect>& outputRects)
{
    Vector<WebFloatRect> matchRects;
    for (WebLocalFrameImpl* frame = &ownerFrame(); frame; frame = toWebLocalFrameImpl(frame->traverseNext(false)))
        frame->ensureTextFinder().appendFindMatchRects(matchRects);

    outputRects = matchRects;
}

static PassOwnPtr<WebMediaPlayer> createWebMediaPlayer(WebMediaPlayerClient* client, const WebURL& url, LocalFrame* frame, WebContentDecryptionModule* initialCdm)
{
    WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(frame);

    if (!webFrame || !webFrame->client())
        return nullptr;
    return adoptPtr(webFrame->client()->createMediaPlayer(webFrame, url, client, initialCdm));
}

void WebRemoteFrameImpl::didStopLoading()
{
    frame()->setIsLoading(false);
    if (parent() && parent()->isWebLocalFrame()) {
        WebLocalFrameImpl* parentFrame =
            toWebLocalFrameImpl(parent()->toWebLocalFrame());
        parentFrame->frame()->loader().checkCompleted();
    }
}

// Although a LocalFrame is passed in, we don't actually use it, since we
// already know our own m_webView.
void ChromeClientImpl::runJavaScriptAlert(LocalFrame* frame, const String& message)
{
    WebLocalFrameImpl* webframe = WebLocalFrameImpl::fromFrame(frame);
    if (webframe->client()) {
        if (WebUserGestureIndicator::isProcessingUserGesture())
            WebUserGestureIndicator::currentUserGestureToken().setJavascriptPrompt();
        webframe->client()->runModalAlertDialog(message);
    }
}

void ChromeClientImpl::contentsSizeChanged(LocalFrame* frame, const IntSize& size) const
{
    m_webView->didChangeContentsSize();

    WebLocalFrameImpl* webframe = WebLocalFrameImpl::fromFrame(frame);
    webframe->didChangeContentsSize(size);

    frame->loader().restoreScrollPositionAndViewState();
}

void WebRemoteFrameImpl::initializeFromFrame(WebLocalFrame* source) const
{
    ASSERT(source);
    WebLocalFrameImpl* localFrameImpl = toWebLocalFrameImpl(source);

    client()->initializeChildFrame(
        localFrameImpl->frame()->view()->frameRect(),
        localFrameImpl->frame()->page()->deviceScaleFactor());
}

void ChromeClientImpl::handleKeyboardEventOnTextField(
    HTMLInputElement& inputElement,
    KeyboardEvent& event) {
  WebLocalFrameImpl* webframe =
      WebLocalFrameImpl::fromFrame(inputElement.document().frame());
  if (webframe->autofillClient())
    webframe->autofillClient()->textFieldDidReceiveKeyDown(
        WebInputElement(&inputElement), WebKeyboardEventBuilder(event));
}

void NotificationPermissionClientImpl::requestPermission(ExecutionContext* context, NotificationPermissionCallback* callback)
{
    ASSERT(context && context->isDocument());

    Document* document = toDocument(context);
    WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(document->frame());

    webFrame->client()->requestNotificationPermission(WebSecurityOrigin(context->securityOrigin()), new WebNotificationPermissionCallbackImpl(callback));
}

// See comments for runJavaScriptAlert().
bool ChromeClientImpl::runJavaScriptConfirm(LocalFrame* frame, const String& message)
{
    WebLocalFrameImpl* webframe = WebLocalFrameImpl::fromFrame(frame);
    if (webframe->client()) {
        if (WebUserGestureIndicator::isProcessingUserGesture())
            WebUserGestureIndicator::currentUserGestureToken().setJavascriptPrompt();
        return webframe->client()->runModalConfirmDialog(message);
    }
    return false;
}

void ChromeClientImpl::postAccessibilityNotification(AXObject* obj, AXObjectCache::AXNotification notification)
{
    // Alert assistive technology about the accessibility object notification.
    if (!obj || !obj->document())
        return;

    WebLocalFrameImpl* webframe = WebLocalFrameImpl::fromFrame(obj->document()->axObjectCacheOwner().frame());
    if (webframe && webframe->client())
        webframe->client()->postAccessibilityEvent(WebAXObject(obj), toWebAXEvent(notification));
}

void ChromeClientImpl::didChangeValueInTextField(
    HTMLFormControlElement& element) {
  WebLocalFrameImpl* webframe =
      WebLocalFrameImpl::fromFrame(element.document().frame());
  if (webframe->autofillClient())
    webframe->autofillClient()->textFieldDidChange(
        WebFormControlElement(&element));

  m_webView->pageImportanceSignals()->setHadFormInteraction();
}

void WebSharedWorkerImpl::loadShadowPage()
{
    WebLocalFrameImpl* webFrame = toWebLocalFrameImpl(m_webView->mainFrame());

    // Construct substitute data source for the 'shadow page'. We only need it
    // to have same origin as the worker so the loading checks work correctly.
    CString content("");
    RefPtr<SharedBuffer> buffer(SharedBuffer::create(content.data(), content.length()));
    webFrame->frame()->loader().load(FrameLoadRequest(0, ResourceRequest(m_url), SubstituteData(buffer, "text/html", "UTF-8", KURL())));
}

void ChromeClientImpl::attachRootLayer(WebLayer* rootLayer,
                                       LocalFrame* localFrame) {
  WebLocalFrameImpl* webFrame =
      WebLocalFrameImpl::fromFrame(localFrame)->localRoot();

  // This method can be called while the frame is being detached. In that
  // case, the rootLayer is null, and the widget is already destroyed.
  DCHECK(webFrame->frameWidget() || !rootLayer);
  if (webFrame->frameWidget())
    webFrame->frameWidget()->setRootLayer(rootLayer);
}

void ChromeClientImpl::startDragging(LocalFrame* frame,
                                     const WebDragData& dragData,
                                     WebDragOperationsMask mask,
                                     const WebImage& dragImage,
                                     const WebPoint& dragImageOffset) {
  WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(frame);
  WebReferrerPolicy policy = webFrame->document().referrerPolicy();
  m_webView->setDoingDragAndDrop(true);
  webFrame->localRoot()->frameWidget()->client()->startDragging(
      policy, dragData, mask, dragImage, dragImageOffset);
}