C++ WebViewImpl类代码示例

void DebuggerAgentManager::hostDispatchHandler(const Vector<WebCore::Page*>& pages)
{
    if (!s_messageLoopDispatchHandler)
        return;

    if (s_inHostDispatchHandler)
        return;

    s_inHostDispatchHandler = true;

    Vector<WebViewImpl*> views;
    // 1. Disable active objects and input events.
    for (size_t i = 0; i < pages.size(); i++) {
        WebCore::Page* page = pages[i];
        WebViewImpl* view = WebViewImpl::fromPage(page);
        s_pageDeferrers.set(view , new WebCore::PageGroupLoadDeferrer(page, true));
        views.append(view);
        view->setIgnoreInputEvents(true);
    }

    // 2. Process messages.
    s_messageLoopDispatchHandler();

    // 3. Bring things back.
    for (Vector<WebViewImpl*>::iterator it = views.begin(); it != views.end(); ++it) {
        if (s_pageDeferrers.contains(*it)) {
            // The view was not closed during the dispatch.
            (*it)->setIgnoreInputEvents(false);
        }
    }
    deleteAllValues(s_pageDeferrers);
    s_pageDeferrers.clear();

    s_inHostDispatchHandler = false;
}

void ImeOnFocusTest::runImeOnFocusTest(std::string fileName, int expectedImeRequestCount, IntPoint tapPoint, const AtomicString& focusElement, std::string frame)
{
    ImeRequestTrackingWebViewClient client;
    registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL), WebString::fromUTF8(fileName));
    WebViewImpl* webView = m_webViewHelper.initialize(true, 0, &client);
    webView->resize(WebSize(800, 1200));
    loadFrame(webView->mainFrame(), m_baseURL + fileName);
    m_document = m_webViewHelper.webViewImpl()->mainFrameImpl()->document().unwrap<Document>();

    if (!focusElement.isNull())
        focus(focusElement);
    EXPECT_EQ(0, client.imeRequestCount());

    if (tapPoint.x() >= 0 && tapPoint.y() >= 0)
        sendGestureTap(webView, tapPoint);

    if (!frame.empty()) {
        registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL), WebString::fromUTF8(frame));
        WebFrame* childFrame = webView->mainFrame()->firstChild();
        loadFrame(childFrame, m_baseURL + frame);
    }

    if (!focusElement.isNull())
        focus(focusElement);
    EXPECT_EQ(expectedImeRequestCount, client.imeRequestCount());

    m_webViewHelper.reset();
}

bool IDBFactoryBackendProxy::allowIndexedDB(ScriptExecutionContext* context, const String& name, const WebSecurityOrigin& origin, PassRefPtr<IDBCallbacks> callbacks)
{
    bool allowed;
    ASSERT(context->isDocument() || context->isWorkerContext());
    if (context->isDocument()) {
        Document* document = static_cast<Document*>(context);
        WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
        WebViewImpl* webView = webFrame->viewImpl();
        // FIXME: webView->permissionClient() returns 0 in test_shell and content_shell http://crbug.com/137269
        allowed = !webView->permissionClient() || webView->permissionClient()->allowIndexedDB(webFrame, name, origin);
    } else {
        WorkerContext* workerContext = static_cast<WorkerContext*>(context);
        WebWorkerBase* webWorkerBase = static_cast<WebWorkerBase*>(&workerContext->thread()->workerLoaderProxy());
        WorkerRunLoop& runLoop = workerContext->thread()->runLoop();

        String mode = allowIndexedDBMode;
        mode.append(String::number(runLoop.createUniqueId()));
        RefPtr<AllowIndexedDBMainThreadBridge> bridge = AllowIndexedDBMainThreadBridge::create(webWorkerBase, mode, name);

        // Either the bridge returns, or the queue gets terminated.
        if (runLoop.runInMode(workerContext, mode) == MessageQueueTerminated) {
            bridge->cancel();
            allowed = false;
        } else
            allowed = bridge->result();
    }

    if (!allowed)
        callbacks->onError(WebIDBDatabaseError(IDBDatabaseException::UNKNOWN_ERR, "The user denied permission to access the database."));

    return allowed;
}

bool DatabaseObserver::canEstablishDatabase(ScriptExecutionContext* scriptExecutionContext, const String& name, const String& displayName, unsigned long estimatedSize)
{
    ASSERT(scriptExecutionContext->isContextThread());
    ASSERT(scriptExecutionContext->isDocument() || scriptExecutionContext->isWorkerGlobalScope());
    if (scriptExecutionContext->isDocument()) {
        Document* document = toDocument(scriptExecutionContext);
        WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
        if (!webFrame)
            return false;
        WebViewImpl* webView = webFrame->viewImpl();
        if (!webView)
            return false;
        if (webView->permissionClient())
            return webView->permissionClient()->allowDatabase(webFrame, name, displayName, estimatedSize);
    } else {
        WorkerGlobalScope* workerGlobalScope = toWorkerGlobalScope(scriptExecutionContext);
        WebWorkerBase* webWorker = static_cast<WebWorkerBase*>(workerGlobalScope->thread()->workerLoaderProxy().toWebWorkerBase());
        WebView* view = webWorker->view();
        if (!view)
            return false;
        return allowDatabaseForWorker(view->mainFrame(), name, displayName, estimatedSize);
    }

    return true;
}

void FrameLoaderClientImpl::postProgressFinishedNotification()
{
    // FIXME: why might the webview be null?  http://b/1234461
    WebViewImpl* webview = m_webFrame->viewImpl();
    if (webview && webview->client())
        webview->client()->didStopLoading();
}

bool DatabaseObserver::canEstablishDatabase(ExecutionContext* executionContext, const String& name, const String& displayName, unsigned long estimatedSize)
{
    ASSERT(executionContext->isContextThread());
    ASSERT(executionContext->isDocument() || executionContext->isWorkerGlobalScope());
    if (executionContext->isDocument()) {
        Document* document = toDocument(executionContext);
        WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
        if (!webFrame)
            return false;
        WebViewImpl* webView = webFrame->viewImpl();
        if (!webView)
            return false;
        if (webView->permissionClient())
            return webView->permissionClient()->allowDatabase(webFrame, name, displayName, estimatedSize);
    } else {
        WorkerGlobalScope* workerGlobalScope = toWorkerGlobalScope(executionContext);
        WorkerPermissionClient* permissionClient = WorkerPermissionClient::from(workerGlobalScope);
        if (permissionClient->proxy())
            return permissionClient->allowDatabase(name, displayName, estimatedSize);

        // FIXME: Deprecate this bridge code when PermissionClientProxy is
        // implemented by the embedder.
        WebWorkerBase* webWorker = static_cast<WebWorkerBase*>(workerGlobalScope->thread()->workerLoaderProxy().toWebWorkerBase());
        WebView* view = webWorker->view();
        if (!view)
            return false;
        return allowDatabaseForWorker(view->mainFrame(), name, displayName, estimatedSize);
    }

    return true;
}

bool DatabaseObserver::canEstablishDatabase(ScriptExecutionContext* scriptExecutionContext, const String& name, const String& displayName, unsigned long estimatedSize)
{
    ASSERT(scriptExecutionContext->isContextThread());
    ASSERT(scriptExecutionContext->isDocument() || scriptExecutionContext->isWorkerContext());
    if (scriptExecutionContext->isDocument()) {
        Document* document = static_cast<Document*>(scriptExecutionContext);
        WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
        if (!webFrame)
            return false;
        WebViewImpl* webView = webFrame->viewImpl();
        if (!webView)
            return false;
        if (webView->permissionClient())
            return webView->permissionClient()->allowDatabase(webFrame, name, displayName, estimatedSize);
    } else {
#if ENABLE(WORKERS)
        WorkerContext* workerContext = static_cast<WorkerContext*>(scriptExecutionContext);
        WorkerLoaderProxy* workerLoaderProxy = &workerContext->thread()->workerLoaderProxy();
        NewWebWorkerBase* webWorker = static_cast<NewWebWorkerBase*>(workerLoaderProxy);
        return allowDatabaseForWorker(webWorker->newCommonClient(), webWorker->view()->mainFrame(), name, displayName, estimatedSize);
#else
        ASSERT_NOT_REACHED();
#endif
    }

    return true;
}

// static
PassOwnPtrWillBeRawPtr<WebDevToolsAgentImpl> WebDevToolsAgentImpl::create(WebLocalFrameImpl* frame, WebDevToolsAgentClient* client)
{
    WebViewImpl* view = frame->viewImpl();
    bool isMainFrame = view && view->mainFrameImpl() == frame;
    if (!isMainFrame) {
        WebDevToolsAgentImpl* agent = new WebDevToolsAgentImpl(frame, client, frame->inspectorOverlay());
        if (frame->frameWidget())
            agent->layerTreeViewChanged(frame->frameWidget()->layerTreeView());
        return adoptPtrWillBeNoop(agent);
    }

    WebDevToolsAgentImpl* agent = new WebDevToolsAgentImpl(frame, client, view->inspectorOverlay());
    agent->registerAgent(InspectorRenderingAgent::create(view));
    agent->registerAgent(InspectorEmulationAgent::create(view));
    // TODO(dgozman): migrate each of the following agents to frame once module is ready.
    agent->registerAgent(InspectorDatabaseAgent::create(view->page()));
    agent->registerAgent(DeviceOrientationInspectorAgent::create(view->page()));
    agent->registerAgent(InspectorFileSystemAgent::create(view->page()));
    agent->registerAgent(InspectorIndexedDBAgent::create(view->page()));
    agent->registerAgent(InspectorAccessibilityAgent::create(view->page()));
    agent->registerAgent(InspectorDOMStorageAgent::create(view->page()));
    agent->registerAgent(InspectorCacheStorageAgent::create());
    agent->layerTreeViewChanged(view->layerTreeView());
    return adoptPtrWillBeNoop(agent);
}

void FrameLoaderClientImpl::didNotAllowPlugins()
{
    WebViewImpl* webview = m_webFrame->viewImpl();
    if (webview && webview->permissionClient())
        webview->permissionClient()->didNotAllowPlugins(m_webFrame);

}

unsigned FrameLoaderClientImpl::backForwardLength() {
  WebViewImpl* webview = m_webFrame->viewImpl();
  if (!webview || !webview->client())
    return 0;
  return webview->client()->historyBackListCount() + 1 +
         webview->client()->historyForwardListCount();
}

Page* ChromeClientImpl::createWindow(
    Frame* frame, const FrameLoadRequest& r, const WindowFeatures& features, const NavigationAction& action)
{
    if (!m_webView->client())
        return 0;

    // FrameLoaderClientImpl may have given us a policy to use for the next new
    // window navigation. If not, determine the policy using the same logic as
    // show().
    WebNavigationPolicy policy;
    if (m_nextNewWindowNavigationPolicy != WebNavigationPolicyIgnore) {
        policy = m_nextNewWindowNavigationPolicy;
        m_nextNewWindowNavigationPolicy = WebNavigationPolicyIgnore;
    } else
        policy = getNavigationPolicy();

    WrappedResourceRequest request;
    if (!r.resourceRequest().isEmpty())
        request.bind(r.resourceRequest());
    else if (!action.resourceRequest().isEmpty())
        request.bind(action.resourceRequest());
    WebViewImpl* newView = static_cast<WebViewImpl*>(
        m_webView->client()->createView(WebFrameImpl::fromFrame(frame), request, features, r.frameName(), policy));
    if (!newView)
        return 0;

    return newView->page();
}

TEST_F(DocumentLoaderTest, isCommittedButEmpty) {
  WebViewImpl* webViewImpl =
      m_webViewHelper.initializeAndLoad("about:blank", true);
  EXPECT_TRUE(toLocalFrame(webViewImpl->page()->mainFrame())
                  ->loader()
                  .documentLoader()
                  ->isCommittedButEmpty());
}

void FrameLoaderClientImpl::postProgressEstimateChangedNotification()
{
    WebViewImpl* webview = m_webFrame->viewImpl();
    if (webview && webview->client()) {
        webview->client()->didChangeLoadProgress(
            m_webFrame, m_webFrame->frame()->page()->progress().estimatedProgress());
    }
}

bool FrameLoaderClientImpl::allowScriptFromSource(bool enabledPerSettings, const KURL& scriptURL)
{
    WebViewImpl* webview = m_webFrame->viewImpl();
    if (webview && webview->permissionClient())
        return webview->permissionClient()->allowScriptFromSource(m_webFrame, enabledPerSettings, scriptURL);

    return enabledPerSettings;
}

bool FrameLoaderClientImpl::allowImage(bool enabledPerSettings, const KURL& imageURL)
{
    WebViewImpl* webview = m_webFrame->viewImpl();
    if (webview && webview->permissionClient())
        return webview->permissionClient()->allowImage(m_webFrame, enabledPerSettings, imageURL);

    return enabledPerSettings;
}