root/Source/core/html/HTMLFrameElementBase.cpp

DEFINITIONS

1. m_marginHeight
2. isURLAllowed
3. openURL
4. parseAttribute
5. setNameAndOpenURL
6. insertedInto
7. didNotifySubtreeInsertionsToDocument
8. attach
9. setLocation
10. supportsFocus
11. setFocus
12. isURLAttribute
13. hasLegalLinkAttribute
14. isHTMLContentAttribute
15. width
16. height

/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 *           (C) 2000 Simon Hausmann (hausmann@kde.org)
 *           (C) 2001 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "config.h"
#include "core/html/HTMLFrameElementBase.h"

#include "HTMLNames.h"
#include "bindings/v8/ScriptController.h"
#include "bindings/v8/ScriptEventListener.h"
#include "core/dom/Attribute.h"
#include "core/dom/Document.h"
#include "core/frame/FrameView.h"
#include "core/frame/LocalFrame.h"
#include "core/html/parser/HTMLParserIdioms.h"
#include "core/loader/FrameLoader.h"
#include "core/page/FocusController.h"
#include "core/page/Page.h"
#include "core/rendering/RenderPart.h"

namespace WebCore {

using namespace HTMLNames;

HTMLFrameElementBase::HTMLFrameElementBase(const QualifiedName& tagName, Document& document)
    : HTMLFrameOwnerElement(tagName, document)
    , m_scrolling(ScrollbarAuto)
    , m_marginWidth(-1)
    , m_marginHeight(-1)
{
}

bool HTMLFrameElementBase::isURLAllowed() const
{
    if (m_URL.isEmpty())
        return true;

    const KURL& completeURL = document().completeURL(m_URL);

    if (protocolIsJavaScript(completeURL)) {
        Document* contentDoc = this->contentDocument();
        if (contentDoc && !ScriptController::canAccessFromCurrentOrigin(contentDoc->frame()))
            return false;
    }

    LocalFrame* parentFrame = document().frame();
    if (parentFrame)
        return parentFrame->isURLAllowed(completeURL);

    return true;
}

void HTMLFrameElementBase::openURL(bool lockBackForwardList)
{
    if (!isURLAllowed())
        return;

    if (m_URL.isEmpty())
        m_URL = AtomicString(blankURL().string());

    LocalFrame* parentFrame = document().frame();
    if (!parentFrame)
        return;

    // Support for <frame src="javascript:string">
    KURL scriptURL;
    KURL url = document().completeURL(m_URL);
    if (protocolIsJavaScript(m_URL)) {
        scriptURL = url;
        url = blankURL();
    }

    if (!loadOrRedirectSubframe(url, m_frameName, lockBackForwardList))
        return;
    if (!contentFrame() || scriptURL.isEmpty() || !contentFrame()->isLocalFrame())
        return;
    toLocalFrame(contentFrame())->script().executeScriptIfJavaScriptURL(scriptURL);
}

void HTMLFrameElementBase::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
    if (name == srcdocAttr)
        setLocation("about:srcdoc");
    else if (name == srcAttr && !fastHasAttribute(srcdocAttr))
        setLocation(stripLeadingAndTrailingHTMLSpaces(value));
    else if (isIdAttributeName(name)) {
        // Important to call through to base for the id attribute so the hasID bit gets set.
        HTMLFrameOwnerElement::parseAttribute(name, value);
        m_frameName = value;
    } else if (name == nameAttr) {
        m_frameName = value;
        // FIXME: If we are already attached, this doesn't actually change the frame's name.
        // FIXME: If we are already attached, this doesn't check for frame name
        // conflicts and generate a unique frame name.
    } else if (name == marginwidthAttr) {
        m_marginWidth = value.toInt();
        // FIXME: If we are already attached, this has no effect.
    } else if (name == marginheightAttr) {
        m_marginHeight = value.toInt();
        // FIXME: If we are already attached, this has no effect.
    } else if (name == scrollingAttr) {
        // Auto and yes both simply mean "allow scrolling." No means "don't allow scrolling."
        if (equalIgnoringCase(value, "auto") || equalIgnoringCase(value, "yes"))
            m_scrolling = ScrollbarAuto;
        else if (equalIgnoringCase(value, "no"))
            m_scrolling = ScrollbarAlwaysOff;
        // FIXME: If we are already attached, this has no effect.
    } else if (name == onbeforeunloadAttr) {
        // FIXME: should <frame> elements have beforeunload handlers?
        setAttributeEventListener(EventTypeNames::beforeunload, createAttributeEventListener(this, name, value));
    } else
        HTMLFrameOwnerElement::parseAttribute(name, value);
}

void HTMLFrameElementBase::setNameAndOpenURL()
{
    m_frameName = getNameAttribute();
    openURL();
}

Node::InsertionNotificationRequest HTMLFrameElementBase::insertedInto(ContainerNode* insertionPoint)
{
    HTMLFrameOwnerElement::insertedInto(insertionPoint);
    return InsertionShouldCallDidNotifySubtreeInsertions;
}

void HTMLFrameElementBase::didNotifySubtreeInsertionsToDocument()
{
    if (!document().frame())
        return;

    if (!SubframeLoadingDisabler::canLoadFrame(*this))
        return;

    setNameAndOpenURL();
}

void HTMLFrameElementBase::attach(const AttachContext& context)
{
    HTMLFrameOwnerElement::attach(context);

    if (renderPart()) {
        if (Frame* frame = contentFrame()) {
            if (frame->isLocalFrame())
                setWidget(toLocalFrame(frame)->view());
        }
    }
}

void HTMLFrameElementBase::setLocation(const String& str)
{
    m_URL = AtomicString(str);

    if (inDocument())
        openURL(false);
}

bool HTMLFrameElementBase::supportsFocus() const
{
    return true;
}

void HTMLFrameElementBase::setFocus(bool received)
{
    HTMLFrameOwnerElement::setFocus(received);
    if (Page* page = document().page()) {
        if (received)
            page->focusController().setFocusedFrame(contentFrame());
        else if (page->focusController().focusedFrame() == contentFrame()) // Focus may have already been given to another frame, don't take it away.
            page->focusController().setFocusedFrame(nullptr);
    }
}

bool HTMLFrameElementBase::isURLAttribute(const Attribute& attribute) const
{
    return attribute.name() == longdescAttr || attribute.name() == srcAttr
        || HTMLFrameOwnerElement::isURLAttribute(attribute);
}

bool HTMLFrameElementBase::hasLegalLinkAttribute(const QualifiedName& name) const
{
    return name == hrefAttr || HTMLFrameOwnerElement::hasLegalLinkAttribute(name);
}

bool HTMLFrameElementBase::isHTMLContentAttribute(const Attribute& attribute) const
{
    return attribute.name() == srcdocAttr || HTMLFrameOwnerElement::isHTMLContentAttribute(attribute);
}

int HTMLFrameElementBase::width()
{
    document().updateLayoutIgnorePendingStylesheets();
    if (!renderBox())
        return 0;
    return renderBox()->width();
}

int HTMLFrameElementBase::height()
{
    document().updateLayoutIgnorePendingStylesheets();
    if (!renderBox())
        return 0;
    return renderBox()->height();
}

} // namespace WebCore