C++ WebViewClient类代码示例

void ChromeClientImpl::runOpenPanel(LocalFrame* frame, PassRefPtr<FileChooser> fileChooser)
{
    WebViewClient* client = m_webView->client();
    if (!client)
        return;

    WebFileChooserParams params;
    params.multiSelect = fileChooser->settings().allowsMultipleFiles;
    params.directory = fileChooser->settings().allowsDirectoryUpload;
    params.acceptTypes = fileChooser->settings().acceptTypes();
    params.selectedFiles = fileChooser->settings().selectedFiles;
    if (params.selectedFiles.size() > 0)
        params.initialValue = params.selectedFiles[0];
#if ENABLE(MEDIA_CAPTURE)
    params.useMediaCapture = fileChooser->settings().useMediaCapture;
#endif
    WebFileChooserCompletionImpl* chooserCompletion =
        new WebFileChooserCompletionImpl(fileChooser);

    if (client->runFileChooser(params, chooserCompletion))
        return;

    // Choosing failed, so do callback with an empty list.
    chooserCompletion->didChooseFile(WebVector<WebString>());
}

void ChromeClientImpl::runOpenPanel(Frame* frame, PassRefPtr<FileChooser> fileChooser)
{
    WebViewClient* client = m_webView->client();
    if (!client)
        return;

    WebFileChooserParams params;
    params.multiSelect = fileChooser->settings().allowsMultipleFiles;
#if ENABLE(DIRECTORY_UPLOAD)
    params.directory = fileChooser->settings().allowsDirectoryUpload;
#else
    params.directory = false;
#endif
    params.acceptMIMETypes = fileChooser->settings().acceptMIMETypes;
    // FIXME: Remove WebFileChooserParams::acceptTypes.
    StringBuilder builder;
    const Vector<String>& acceptTypeList = fileChooser->settings().acceptMIMETypes;
    for (unsigned i = 0; i < acceptTypeList.size(); ++i) {
        if (i > 0)
            builder.append(',');
        builder.append(acceptTypeList[i]);
    }
    params.acceptTypes = builder.toString();
    params.selectedFiles = fileChooser->settings().selectedFiles;
    if (params.selectedFiles.size() > 0)
        params.initialValue = params.selectedFiles[0];
    WebFileChooserCompletionImpl* chooserCompletion =
        new WebFileChooserCompletionImpl(fileChooser);

    if (client->runFileChooser(params, chooserCompletion))
        return;

    // Choosing failed, so do callback with an empty list.
    chooserCompletion->didChooseFile(WebVector<WebString>());
}

PassOwnPtr<ColorChooser> ChromeClientImpl::createColorChooser(ColorChooserClient* chooserClient, const Color& initialColor)
{
    WebViewClient* client = m_webView->client();
    if (!client)
        return nullptr;
    WebColorChooserClientImpl* chooserClientProxy = new WebColorChooserClientImpl(chooserClient);
    WebColor webColor = static_cast<WebColor>(initialColor.rgb());
    WebColorChooser* chooser = client->createColorChooser(chooserClientProxy, webColor);
    if (!chooser)
        return nullptr;
    return adoptPtr(new ColorChooserProxy(adoptPtr(chooser)));
}

void ChromeClientImpl::enumerateChosenDirectory(FileChooser* fileChooser)
{
    WebViewClient* client = m_webView->client();
    if (!client)
        return;

    WebFileChooserCompletionImpl* chooserCompletion =
        new WebFileChooserCompletionImpl(fileChooser);

    ASSERT(fileChooser && fileChooser->settings().selectedFiles.size());

    // If the enumeration can't happen, call the callback with an empty list.
    if (!client->enumerateChosenDirectory(fileChooser->settings().selectedFiles[0], chooserCompletion))
        chooserCompletion->didChooseFile(WebVector<WebString>());
}

void ChromeClientImpl::dispatchViewportPropertiesDidChange(const ViewportArguments& arguments) const
{
#if ENABLE(VIEWPORT)
    if (!m_webView->settings()->viewportEnabled() || !m_webView->isFixedLayoutModeEnabled() || !m_webView->client() || !m_webView->page())
        return;

    bool useDefaultDeviceScaleFactor = false;
    ViewportArguments args;
    if (arguments == args) {
        // Default viewport arguments passed in. This is a signal to reset the viewport.
        args.width = ViewportArguments::ValueDesktopWidth;
        useDefaultDeviceScaleFactor = true;
    } else
        args = arguments;

    FrameView* frameView = m_webView->mainFrameImpl()->frameView();
    int dpi = screenHorizontalDPI(frameView);
    ASSERT(dpi > 0);

    WebViewClient* client = m_webView->client();
    WebRect deviceRect = client->windowRect();
    // If the window size has not been set yet don't attempt to set the viewport
    if (!deviceRect.width || !deviceRect.height)
        return;

    Settings* settings = m_webView->page()->settings();
    // Call the common viewport computing logic in ViewportArguments.cpp.
    ViewportAttributes computed = computeViewportAttributes(
        args, settings->layoutFallbackWidth(), deviceRect.width, deviceRect.height,
        dpi, IntSize(deviceRect.width, deviceRect.height));

    int layoutWidth = computed.layoutSize.width();
    int layoutHeight = computed.layoutSize.height();
    m_webView->setFixedLayoutSize(IntSize(layoutWidth, layoutHeight));

    // FIXME: Investigate the impact this has on layout/rendering if any.
    // This exposes the correct device scale to javascript and media queries.
    if (useDefaultDeviceScaleFactor && settings->defaultDeviceScaleFactor())
        m_webView->setDeviceScaleFactor(settings->defaultDeviceScaleFactor());
    else
        m_webView->setDeviceScaleFactor(computed.devicePixelRatio);
    m_webView->setPageScaleFactorLimits(computed.minimumScale, computed.maximumScale);
    m_webView->setPageScaleFactorPreservingScrollOffset(computed.initialScale * computed.devicePixelRatio);
#endif
}

void ChromeClientImpl::openFileChooser(LocalFrame* frame, PassRefPtr<FileChooser> fileChooser)
{
    notifyPopupOpeningObservers();
    WebViewClient* client = m_webView->client();
    if (!client)
        return;

    WebFileChooserParams params;
    params.multiSelect = fileChooser->settings().allowsMultipleFiles;
    params.directory = fileChooser->settings().allowsDirectoryUpload;
    params.acceptTypes = fileChooser->settings().acceptTypes();
    params.selectedFiles = fileChooser->settings().selectedFiles;
    if (params.selectedFiles.size() > 0)
        params.initialValue = params.selectedFiles[0];
    params.useMediaCapture = fileChooser->settings().useMediaCapture;
    params.needLocalPath = fileChooser->settings().allowsDirectoryUpload;
    params.requestor = frame->document()->url();

    WebFileChooserCompletionImpl* chooserCompletion = new WebFileChooserCompletionImpl(fileChooser);
    if (client->runFileChooser(params, chooserCompletion))
        return;
    // Choosing failed, so do callback with an empty list.
    chooserCompletion->didChooseFile(WebVector<WebString>());
}

void ChromeClientImpl::annotatedRegionsChanged()
{
    WebViewClient* client = m_webView->client();
    if (client)
        client->draggableRegionsChanged();
}