C++ RenderEmbeddedObject::style方法代码示例

bool HTMLPlugInImageElement::isTopLevelFullPagePlugin(const RenderEmbeddedObject& renderer) const
{
    Frame& frame = *document().frame();
    if (!frame.isMainFrame())
        return false;
    
    auto& style = renderer.style();
    IntSize visibleSize = frame.view()->visibleSize();
    LayoutRect contentRect = renderer.contentBoxRect();
    int contentWidth = contentRect.width();
    int contentHeight = contentRect.height();
    return is100Percent(style.width()) && is100Percent(style.height()) && contentWidth * contentHeight > visibleSize.area() * sizingFullPageAreaRatioThreshold;
}

void HTMLAppletElement::updateWidget(PluginCreationOption pluginCreationOption)
{
    setNeedsWidgetUpdate(false);
    // FIXME: This should ASSERT isFinishedParsingChildren() instead.
    if (!isFinishedParsingChildren())
        return;

#if PLATFORM(IOS)
    UNUSED_PARAM(pluginCreationOption);
#else
    // FIXME: It's sadness that we have this special case here.
    //        See http://trac.webkit.org/changeset/25128 and
    //        plugins/netscape-plugin-setwindow-size.html
    if (pluginCreationOption == CreateOnlyNonNetscapePlugins) {
        // Ensure updateWidget() is called again during layout to create the Netscape plug-in.
        setNeedsWidgetUpdate(true);
        return;
    }

    RenderEmbeddedObject* renderer = renderEmbeddedObject();

    LayoutUnit contentWidth = renderer->style().width().isFixed() ? LayoutUnit(renderer->style().width().value()) :
        renderer->width() - renderer->horizontalBorderAndPaddingExtent();
    LayoutUnit contentHeight = renderer->style().height().isFixed() ? LayoutUnit(renderer->style().height().value()) :
        renderer->height() - renderer->verticalBorderAndPaddingExtent();

    Vector<String> paramNames;
    Vector<String> paramValues;

    paramNames.append("code");
    paramValues.append(fastGetAttribute(codeAttr).string());

    const AtomicString& codeBase = fastGetAttribute(codebaseAttr);
    if (!codeBase.isNull()) {
        paramNames.append(ASCIILiteral("codeBase"));
        paramValues.append(codeBase.string());
    }

    const AtomicString& name = document().isHTMLDocument() ? getNameAttribute() : getIdAttribute();
    if (!name.isNull()) {
        paramNames.append("name");
        paramValues.append(name.string());
    }

    const AtomicString& archive = fastGetAttribute(archiveAttr);
    if (!archive.isNull()) {
        paramNames.append(ASCIILiteral("archive"));
        paramValues.append(archive.string());
    }

    paramNames.append(ASCIILiteral("baseURL"));
    paramValues.append(document().baseURL().string());

    const AtomicString& mayScript = fastGetAttribute(mayscriptAttr);
    if (!mayScript.isNull()) {
        paramNames.append(ASCIILiteral("mayScript"));
        paramValues.append(mayScript.string());
    }

    for (auto& param : childrenOfType<HTMLParamElement>(*this)) {
        if (param.name().isEmpty())
            continue;

        paramNames.append(param.name());
        paramValues.append(param.value());
    }

    Frame* frame = document().frame();
    ASSERT(frame);

    renderer->setWidget(frame->loader().subframeLoader().createJavaAppletWidget(roundedIntSize(LayoutSize(contentWidth, contentHeight)), *this, paramNames, paramValues));
#endif // !PLATFORM(IOS)
}

void HTMLAppletElement::updateWidget(PluginCreationOption)
{
    setNeedsWidgetUpdate(false);
    // FIXME: This should ASSERT isFinishedParsingChildren() instead.
    if (!isFinishedParsingChildren())
        return;

    RenderEmbeddedObject* renderer = renderEmbeddedObject();

    Frame* frame = document().frame();
    ASSERT(frame);

    LayoutUnit contentWidth = renderer->style()->width().isFixed() ? LayoutUnit(renderer->style()->width().value()) :
        renderer->width() - renderer->borderAndPaddingWidth();
    LayoutUnit contentHeight = renderer->style()->height().isFixed() ? LayoutUnit(renderer->style()->height().value()) :
        renderer->height() - renderer->borderAndPaddingHeight();

    Vector<String> paramNames;
    Vector<String> paramValues;

    paramNames.append("code");
    paramValues.append(getAttribute(codeAttr).string());

    const AtomicString& codeBase = getAttribute(codebaseAttr);
    if (!codeBase.isNull()) {
        KURL codeBaseURL = document().completeURL(codeBase);
        if (!document().securityOrigin()->canDisplay(codeBaseURL)) {
            FrameLoader::reportLocalLoadFailed(frame, codeBaseURL.string());
            return;
        }
        const char javaAppletMimeType[] = "application/x-java-applet";
        if (!document().contentSecurityPolicy()->allowObjectFromSource(codeBaseURL)
            || !document().contentSecurityPolicy()->allowPluginType(javaAppletMimeType, javaAppletMimeType, codeBaseURL))
            return;
        paramNames.append("codeBase");
        paramValues.append(codeBase.string());
    }

    const AtomicString& name = document().isHTMLDocument() ? getNameAttribute() : getIdAttribute();
    if (!name.isNull()) {
        paramNames.append("name");
        paramValues.append(name.string());
    }

    const AtomicString& archive = getAttribute(archiveAttr);
    if (!archive.isNull()) {
        paramNames.append("archive");
        paramValues.append(archive.string());
    }

    paramNames.append("baseURL");
    KURL baseURL = document().baseURL();
    paramValues.append(baseURL.string());

    const AtomicString& mayScript = getAttribute(mayscriptAttr);
    if (!mayScript.isNull()) {
        paramNames.append("mayScript");
        paramValues.append(mayScript.string());
    }

    for (Node* child = firstChild(); child; child = child->nextSibling()) {
        if (!child->hasTagName(paramTag))
            continue;

        HTMLParamElement* param = toHTMLParamElement(child);
        if (param->name().isEmpty())
            continue;

        paramNames.append(param->name());
        paramValues.append(param->value());
    }

    RefPtr<Widget> widget;
    if (frame->loader()->allowPlugins(AboutToInstantiatePlugin))
        widget = frame->loader()->client()->createJavaAppletWidget(roundedIntSize(LayoutSize(contentWidth, contentHeight)), this, baseURL, paramNames, paramValues);

    if (!widget) {
        if (!renderer->showsUnavailablePluginIndicator())
            renderer->setPluginUnavailabilityReason(RenderEmbeddedObject::PluginMissing);
        return;
    }
    frame->loader()->setContainsPlugins();
    renderer->setWidget(widget);
}

void HTMLAppletElement::updateWidgetInternal()
{
    ASSERT(!m_isDelayingLoadEvent);
    setNeedsWidgetUpdate(false);
    // FIXME: This should ASSERT isFinishedParsingChildren() instead.
    if (!isFinishedParsingChildren())
        return;

    RenderEmbeddedObject* renderer = renderEmbeddedObject();

    Frame* frame = document().frame();
    ASSERT(frame);

    LayoutUnit contentWidth = renderer->style()->width().isFixed() ? LayoutUnit(renderer->style()->width().value()) :
        renderer->width() - renderer->borderAndPaddingWidth();
    LayoutUnit contentHeight = renderer->style()->height().isFixed() ? LayoutUnit(renderer->style()->height().value()) :
        renderer->height() - renderer->borderAndPaddingHeight();

    Vector<String> paramNames;
    Vector<String> paramValues;

    const AtomicString& codeBase = getAttribute(codebaseAttr);
    if (!codeBase.isNull()) {
        KURL codeBaseURL = document().completeURL(codeBase);
        paramNames.append("codeBase");
        paramValues.append(codeBase.string());
    }

    const AtomicString& archive = getAttribute(archiveAttr);
    if (!archive.isNull()) {
        paramNames.append("archive");
        paramValues.append(archive.string());
    }

    const AtomicString& code = getAttribute(codeAttr);
    paramNames.append("code");
    paramValues.append(code.string());

    // If the 'codebase' attribute is set, it serves as a relative root for the file that the Java
    // plugin will load. If the 'code' attribute is set, and the 'archive' is not set, then we need
    // to check the url generated by resolving 'code' against 'codebase'. If the 'archive'
    // attribute is set, then 'code' points to a class inside the archive, so we need to check the
    // url generated by resolving 'archive' against 'codebase'.
    KURL urlToCheck;
    KURL rootURL = codeBase.isNull() ? document().url() : document().completeURL(codeBase);
    if (!archive.isNull())
        urlToCheck = KURL(rootURL, archive);
    else if (!code.isNull())
        urlToCheck = KURL(rootURL, code);
    if (!canEmbedURL(urlToCheck))
        return;

    const AtomicString& name = document().isHTMLDocument() ? getNameAttribute() : getIdAttribute();
    if (!name.isNull()) {
        paramNames.append("name");
        paramValues.append(name.string());
    }

    paramNames.append("baseURL");
    KURL baseURL = document().baseURL();
    paramValues.append(baseURL.string());

    const AtomicString& mayScript = getAttribute(mayscriptAttr);
    if (!mayScript.isNull()) {
        paramNames.append("mayScript");
        paramValues.append(mayScript.string());
    }

    for (Node* child = firstChild(); child; child = child->nextSibling()) {
        if (!child->hasTagName(paramTag))
            continue;

        HTMLParamElement* param = toHTMLParamElement(child);
        if (param->name().isEmpty())
            continue;

        paramNames.append(param->name());
        paramValues.append(param->value());
    }

    RefPtr<Widget> widget;
    if (frame->loader().allowPlugins(AboutToInstantiatePlugin))
        widget = frame->loader().client()->createJavaAppletWidget(roundedIntSize(LayoutSize(contentWidth, contentHeight)), this, baseURL, paramNames, paramValues);

    if (!widget) {
        if (!renderer->showsUnavailablePluginIndicator())
            renderer->setPluginUnavailabilityReason(RenderEmbeddedObject::PluginMissing);
        return;
    }
    document().setContainsPlugins();
    renderer->setWidget(widget);
}