C++ HTMLDocument类代码示例

void HTMLImageElement::insertedIntoDocument()
{
    if (document()->isHTMLDocument()) {
        HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
        document->addNamedItem(m_name);
        document->addExtraNamedItem(m_id);
    }

    // If we have been inserted from a renderer-less document,
    // our loader may have not fetched the image, so do it now.
    if (!m_imageLoader.image())
        m_imageLoader.updateFromElement();

    HTMLElement::insertedIntoDocument();
}

/**
 * blur - this method removes the focus from this element
 *
 * params - none
 * return - void
 */
JSBool jhtml_input_blur(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
	HTMLElement *pElem = (HTMLElement *) jhutil_GetPrivate(cx, obj);

	if (!pElem)
	{
		return JS_TRUE;
	}
	HTMLDocument *pDoc = (pElem)? pElem->GetDocument() : 0;
	if (pDoc && pDoc->Body())
	{
		pDoc->Body()->Focus();
	}
	*rval = JSVAL_VOID;
	return JS_TRUE;
}

void HTMLFormElement::parseMappedAttribute(MappedAttribute *attr)
{
    if (attr->name() == actionAttr) {
        bool oldURLWasSecure = formWouldHaveSecureSubmission(m_url);
        m_url = parseURL(attr->value());
        bool newURLIsSecure = formWouldHaveSecureSubmission(m_url);

        if (m_attached && (oldURLWasSecure != newURLIsSecure))
            if (newURLIsSecure)
                document()->secureFormAdded();
            else
                document()->secureFormRemoved();
    }
    else if (attr->name() == targetAttr)
        m_target = attr->value();
    else if (attr->name() == methodAttr) {
        if (equalIgnoringCase(attr->value(), "post"))
            m_post = true;
        else if (equalIgnoringCase(attr->value(), "get"))
            m_post = false;
    } else if (attr->name() == enctypeAttr)
        parseEnctype(attr->value());
    else if (attr->name() == accept_charsetAttr)
        // space separated list of charsets the server
        // accepts - see rfc2045
        m_acceptcharset = attr->value();
    else if (attr->name() == acceptAttr) {
        // ignore this one for the moment...
    } else if (attr->name() == autocompleteAttr)
        m_autocomplete = !equalIgnoringCase(attr->value(), "off");
    else if (attr->name() == onsubmitAttr)
        setHTMLEventListener(submitEvent, attr);
    else if (attr->name() == onresetAttr)
        setHTMLEventListener(resetEvent, attr);
    else if (attr->name() == nameAttr) {
        String newNameAttr = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument *doc = static_cast<HTMLDocument *>(document());
            doc->removeNamedItem(oldNameAttr);
            doc->addNamedItem(newNameAttr);
        }
        oldNameAttr = newNameAttr;
    } else
        HTMLElement::parseMappedAttribute(attr);
}

void HTMLIFrameElement::parseMappedAttribute(MappedAttribute *attr)
{
    if (attr->name() == widthAttr)
        addCSSLength(attr, CSS_PROP_WIDTH, attr->value());
    else if (attr->name() == heightAttr)
        addCSSLength(attr, CSS_PROP_HEIGHT, attr->value());
    else if (attr->name() == alignAttr)
        addHTMLAlignment(attr);
    else if (attr->name() == nameAttr) {
        String newNameAttr = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument *doc = static_cast<HTMLDocument *>(document());
            doc->removeDocExtraNamedItem(oldNameAttr);
            doc->addDocExtraNamedItem(newNameAttr);
        }
        oldNameAttr = newNameAttr;
    } else
        HTMLFrameElement::parseMappedAttribute(attr);
}

void HTMLIFrameElement::insertedIntoDocument()
{
    if (document()->isHTMLDocument()) {
        HTMLDocument *doc = static_cast<HTMLDocument *>(document());
        doc->addDocExtraNamedItem(oldNameAttr);
    }

    HTMLElement::insertedIntoDocument();
    
    // Load the frame
    m_name = getAttribute(nameAttr);
    if (m_name.isNull())
        m_name = getAttribute(idAttr);
    
    if (Frame* parentFrame = document()->frame()) {
        m_name = parentFrame->tree()->uniqueChildName(m_name);
        
        openURL();
    }    
}

void HTMLIFrameElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
    if (name == nameAttr) {
        if (inDocument() && document()->isHTMLDocument() && !isInShadowTree()) {
            HTMLDocument* document = toHTMLDocument(this->document());
            document->removeExtraNamedItem(m_name);
            document->addExtraNamedItem(value);
        }
        m_name = value;
    } else if (name == sandboxAttr) {
        String invalidTokens;
        setSandboxFlags(value.isNull() ? SandboxNone : SecurityContext::parseSandboxPolicy(value, invalidTokens));
        if (!invalidTokens.isNull())
            document()->addConsoleMessage(OtherMessageSource, ErrorMessageLevel, "Error while parsing the 'sandbox' attribute: " + invalidTokens);
    } else if (name == seamlessAttr) {
        // If we're adding or removing the seamless attribute, we need to force the content document to recalculate its StyleResolver.
        if (contentDocument())
            contentDocument()->styleResolverChanged(DeferRecalcStyle);
    } else
        HTMLFrameElementBase::parseAttribute(name, value);
}

void HTMLImageElement::insertedIntoDocument()
{
    if (document()->isHTMLDocument()) {
        HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
        document->addNamedItem(m_name);
        document->addExtraNamedItem(m_id);
    }

    // If we have been inserted from a renderer-less document,
    // our loader may have not fetched the image, so do it now.
    if (!m_imageLoader.image())
        m_imageLoader.updateFromElement();

    HTMLElement::insertedIntoDocument();

    Request* req = cache()->loader()->requestForUrl(src().string());
    if (!req)
        return;

    req->setNode(PassRefPtr<Node>(this));
}

void HTMLAppletElement::parseMappedAttribute(MappedAttribute *attr)
{
    if (attr->name() == altAttr ||
        attr->name() == archiveAttr ||
        attr->name() == codeAttr ||
        attr->name() == codebaseAttr ||
        attr->name() == mayscriptAttr ||
        attr->name() == objectAttr) {
        // Do nothing.
    } else if (attr->name() == nameAttr) {
        String newNameAttr = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument *doc = static_cast<HTMLDocument *>(document());
            doc->removeNamedItem(oldNameAttr);
            doc->addNamedItem(newNameAttr);
        }
        oldNameAttr = newNameAttr;
    } else if (attr->name() == idAttr) {
        String newIdAttr = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument *doc = static_cast<HTMLDocument *>(document());
            doc->removeDocExtraNamedItem(oldIdAttr);
            doc->addDocExtraNamedItem(newIdAttr);
        }
        oldIdAttr = newIdAttr;
        // also call superclass
        HTMLPlugInElement::parseMappedAttribute(attr);
    } else
        HTMLPlugInElement::parseMappedAttribute(attr);
}

void HTMLAppletElement::parseMappedAttribute(MappedAttribute* attr)
{
    if (attr->name() == altAttr ||
        attr->name() == archiveAttr ||
        attr->name() == codeAttr ||
        attr->name() == codebaseAttr ||
        attr->name() == mayscriptAttr ||
        attr->name() == objectAttr) {
        // Do nothing.
    } else if (attr->name() == nameAttr) {
        const AtomicString& newName = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(newName);
        }
        m_name = newName;
    } else if (attr->name() == idAttr) {
        const AtomicString& newId = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeExtraNamedItem(m_id);
            document->addExtraNamedItem(newId);
        }
        m_id = newId;
        // also call superclass
        HTMLPlugInElement::parseMappedAttribute(attr);
    } else
        HTMLPlugInElement::parseMappedAttribute(attr);
}

void HTMLEmbedElement::parseMappedAttribute(MappedAttribute* attr)
{
    const AtomicString& value = attr->value();
  
    if (attr->name() == typeAttr) {
        m_serviceType = value.string().lower();
        int pos = m_serviceType.find(";");
        if (pos != -1)
            m_serviceType = m_serviceType.left(pos);
        if (!isImageType() && m_imageLoader)
            m_imageLoader.clear();
    } else if (attr->name() == codeAttr)
        m_url = parseURL(value.string());
    else if (attr->name() == srcAttr) {
        m_url = parseURL(value.string());
        if (renderer() && isImageType()) {
            if (!m_imageLoader)
                m_imageLoader.set(new HTMLImageLoader(this));
            m_imageLoader->updateFromElement();
        }
    } else if (attr->name() == pluginpageAttr || attr->name() == pluginspageAttr)
        m_pluginPage = value;
    else if (attr->name() == hiddenAttr) {
        if (equalIgnoringCase(value.string(), "yes") || equalIgnoringCase(value.string(), "true")) {
            // FIXME: Not dynamic, since we add this but don't remove it, but it may be OK for now
            // that this rarely-used attribute won't work properly if you remove it.
            addCSSLength(attr, CSSPropertyWidth, "0");
            addCSSLength(attr, CSSPropertyHeight, "0");
        }
    } else if (attr->name() == nameAttr) {
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(value);
        }
        m_name = value;
    } else
        HTMLPlugInElement::parseMappedAttribute(attr);
}

void V8HTMLDocument::openMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    HTMLDocument* htmlDocument = V8HTMLDocument::toNative(info.Holder());

    if (info.Length() > 2) {
        if (RefPtr<LocalFrame> frame = htmlDocument->frame()) {
            // Fetch the global object for the frame.
            v8::Local<v8::Context> context = toV8Context(info.GetIsolate(), frame.get(), DOMWrapperWorld::current(info.GetIsolate()));
            // Bail out if we cannot get the context.
            if (context.IsEmpty())
                return;
            v8::Local<v8::Object> global = context->Global();
            // Get the open property of the global object.
            v8::Local<v8::Value> function = global->Get(v8AtomicString(info.GetIsolate(), "open"));
            // Failed; return without throwing (new) exception.
            if (function.IsEmpty())
                return;
            // If the open property is not a function throw a type error.
            if (!function->IsFunction()) {
                throwTypeError("open is not a function", info.GetIsolate());
                return;
            }
            // Wrap up the arguments and call the function.
            OwnPtr<v8::Local<v8::Value>[]> params = adoptArrayPtr(new v8::Local<v8::Value>[info.Length()]);
            for (int i = 0; i < info.Length(); i++)
                params[i] = info[i];

            v8SetReturnValue(info, frame->script().callFunction(v8::Local<v8::Function>::Cast(function), global, info.Length(), params.get()));
            return;
        }
    }

    ExceptionState exceptionState(ExceptionState::ExecutionContext, "open", "Document", info.Holder(), info.GetIsolate());
    htmlDocument->open(callingDOMWindow(info.GetIsolate())->document(), exceptionState);
    if (exceptionState.throwIfNeeded())
        return;

    v8SetReturnValue(info, info.Holder());
}

void HTMLEmbedElement::insertedIntoDocument()
{
    if (document()->isHTMLDocument()) {
        HTMLDocument *doc = static_cast<HTMLDocument *>(document());
        doc->addNamedItem(oldNameAttr);
    }

    String width = getAttribute(widthAttr);
    String height = getAttribute(heightAttr);
    if (!width.isEmpty() || !height.isEmpty()) {
        Node* n = parent();
        while (n && !n->hasTagName(objectTag))
            n = n->parent();
        if (n) {
            if (!width.isEmpty())
                static_cast<HTMLObjectElement*>(n)->setAttribute(widthAttr, width);
            if (!height.isEmpty())
                static_cast<HTMLObjectElement*>(n)->setAttribute(heightAttr, height);
        }
    }

    HTMLPlugInElement::insertedIntoDocument();
}

/**
 * blur - This method removes the focus from this element
 *
 * params - none;
 * return - void;
 */
JSBool jhtml_anchor_blur(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
	LOG_HTMLDOM("jhtml_anchor_blur\n");

	if (JS_GetClass(obj) == &JSHtmlAnchorElement)
	{
		HTMLElement *pElem = (HTMLElement *) jhutil_GetPrivate(cx, obj);

		if (!pElem)
		{
			return JS_TRUE;
		}

		HTMLDocument *pDoc = (pElem)? pElem->GetDocument() : 0;
		if (pDoc && pDoc->Body())
		{
			pDoc->Body()->Focus();
		}
	}

	*rval = JSVAL_VOID;
	return JS_TRUE;
}

JSValue JSHTMLDocument::nameGetter(ExecState* exec, JSValue slotBase, PropertyName propertyName)
{
    JSHTMLDocument* thisObj = jsCast<JSHTMLDocument*>(asObject(slotBase));
    HTMLDocument* document = toHTMLDocument(thisObj->impl());

    AtomicStringImpl* atomicPropertyName = findAtomicString(propertyName);
    if (!atomicPropertyName || !document->documentNamedItemMap().contains(atomicPropertyName))
        return jsUndefined();

    if (UNLIKELY(!document->documentNamedItemMap().containsSingle(atomicPropertyName))) {
        RefPtr<HTMLCollection> collection = document->documentNamedItems(atomicPropertyName);
        ASSERT(!collection->isEmpty());
        ASSERT(!collection->hasExactlyOneItem());
        return toJS(exec, thisObj->globalObject(), WTF::getPtr(collection));
    }

    Node* node = document->documentNamedItemMap().getElementByDocumentNamedItem(atomicPropertyName, document);
    Frame* frame;
    if (node->hasTagName(iframeTag) && (frame = static_cast<HTMLIFrameElement*>(node)->contentFrame()))
        return toJS(exec, frame);

    return toJS(exec, thisObj->globalObject(), node);
}

void HTMLImageElement::parseMappedAttribute(Attribute* attr)
{
    const QualifiedName& attrName = attr->name();
    if (attrName == altAttr) {
        if (renderer() && renderer()->isImage())
            toRenderImage(renderer())->updateAltText();
    } else if (attrName == srcAttr)
        m_imageLoader.updateFromElementIgnoringPreviousError();
    else if (attrName == widthAttr)
        addCSSLength(attr, CSSPropertyWidth, attr->value());
    else if (attrName == heightAttr)
        addCSSLength(attr, CSSPropertyHeight, attr->value());
    else if (attrName == borderAttr) {
        // border="noborder" -> border="0"
        applyBorderAttribute(attr);
    } else if (attrName == vspaceAttr) {
        addCSSLength(attr, CSSPropertyMarginTop, attr->value());
        addCSSLength(attr, CSSPropertyMarginBottom, attr->value());
    } else if (attrName == hspaceAttr) {
        addCSSLength(attr, CSSPropertyMarginLeft, attr->value());
        addCSSLength(attr, CSSPropertyMarginRight, attr->value());
    } else if (attrName == alignAttr)
        addHTMLAlignment(attr);
    else if (attrName == valignAttr)
        addCSSProperty(attr, CSSPropertyVerticalAlign, attr->value());
    else if (attrName == usemapAttr)
        setIsLink(!attr->isNull());
    else if (attrName == onabortAttr)
        setAttributeEventListener(eventNames().abortEvent, createAttributeEventListener(this, attr));
    else if (attrName == onloadAttr)
        setAttributeEventListener(eventNames().loadEvent, createAttributeEventListener(this, attr));
    else if (attrName == onbeforeloadAttr)
        setAttributeEventListener(eventNames().beforeloadEvent, createAttributeEventListener(this, attr));
    else if (attrName == compositeAttr) {
        if (!parseCompositeOperator(attr->value(), m_compositeOperator))
            m_compositeOperator = CompositeSourceOver;
    } else if (attrName == nameAttr) {
        const AtomicString& newName = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(newName);
        }
        m_name = newName;
    } else if (isIdAttributeName(attr->name())) {
        const AtomicString& newId = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeExtraNamedItem(m_id);
            document->addExtraNamedItem(newId);
        }
        m_id = newId;
        // also call superclass
        HTMLElement::parseMappedAttribute(attr);
    } else
        HTMLElement::parseMappedAttribute(attr);
}