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/*
* 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 "HTMLFrameElementBase.h"
#include "CSSHelper.h"
#include "Document.h"
#include "EventNames.h"
#include "FocusController.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameTree.h"
#include "FrameView.h"
#include "HTMLFrameSetElement.h"
#include "HTMLNames.h"
#include "ScriptEventListener.h"
#include "KURL.h"
#include "MappedAttribute.h"
#include "Page.h"
#include "RenderFrame.h"
#include "Settings.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)
, m_viewSource(false)
, m_shouldOpenURLAfterAttach(false)
{
}
bool HTMLFrameElementBase::isURLAllowed() const
{
if (m_URL.isEmpty())
return true;
const KURL& completeURL = document()->completeURL(m_URL);
// Don't allow more than 200 total frames in a set. This seems
// like a reasonable upper bound, and otherwise mutually recursive
// frameset pages can quickly bring the program to its knees with
// exponential growth in the number of frames.
// FIXME: This limit could be higher, but because WebKit has some
// algorithms that happen while loading which appear to be N^2 or
// worse in the number of frames, we'll keep it at 200 for now.
if (Frame* parentFrame = document()->frame()) {
if (parentFrame->page()->frameCount() > 200)
return false;
}
// We allow one level of self-reference because some sites depend on that.
// But we don't allow more than one.
bool foundSelfReference = false;
for (Frame* frame = document()->frame(); frame; frame = frame->tree()->parent()) {
if (equalIgnoringFragmentIdentifier(frame->loader()->url(), completeURL)) {
if (foundSelfReference)
return false;
foundSelfReference = true;
}
}
return true;
}
void HTMLFrameElementBase::openURL()
{
ASSERT(!m_frameName.isEmpty());
if (!isURLAllowed())
return;
if (m_URL.isEmpty())
m_URL = blankURL().string();
Frame* parentFrame = document()->frame();
if (!parentFrame)
return;
parentFrame->loader()->requestFrame(this, m_URL, m_frameName);
if (contentFrame())
contentFrame()->setInViewSourceMode(viewSourceMode());
}
void HTMLFrameElementBase::parseMappedAttribute(MappedAttribute *attr)
{
if (attr->name() == srcAttr)
setLocation(deprecatedParseURL(attr->value()));
else if (attr->name() == idAttr) {
// Important to call through to base for the id attribute so the hasID bit gets set.
HTMLFrameOwnerElement::parseMappedAttribute(attr);
m_frameName = attr->value();
} else if (attr->name() == nameAttr) {
m_frameName = attr->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 (attr->name() == marginwidthAttr) {
m_marginWidth = attr->value().toInt();
// FIXME: If we are already attached, this has no effect.
} else if (attr->name() == marginheightAttr) {
m_marginHeight = attr->value().toInt();
// FIXME: If we are already attached, this has no effect.
} else if (attr->name() == scrollingAttr) {
// Auto and yes both simply mean "allow scrolling." No means "don't allow scrolling."
if (equalIgnoringCase(attr->value(), "auto") || equalIgnoringCase(attr->value(), "yes"))
m_scrolling = document()->frameElementsShouldIgnoreScrolling() ? ScrollbarAlwaysOff : ScrollbarAuto;
else if (equalIgnoringCase(attr->value(), "no"))
m_scrolling = ScrollbarAlwaysOff;
// FIXME: If we are already attached, this has no effect.
} else if (attr->name() == viewsourceAttr) {
m_viewSource = !attr->isNull();
if (contentFrame())
contentFrame()->setInViewSourceMode(viewSourceMode());
} else if (attr->name() == onloadAttr)
setAttributeEventListener(eventNames().loadEvent, createAttributeEventListener(this, attr));
else if (attr->name() == onbeforeloadAttr)
setAttributeEventListener(eventNames().beforeloadEvent, createAttributeEventListener(this, attr));
else if (attr->name() == onbeforeunloadAttr) {
// FIXME: should <frame> elements have beforeunload handlers?
setAttributeEventListener(eventNames().beforeunloadEvent, createAttributeEventListener(this, attr));
} else
HTMLFrameOwnerElement::parseMappedAttribute(attr);
}
void HTMLFrameElementBase::setNameAndOpenURL()
{
m_frameName = getAttribute(nameAttr);
if (m_frameName.isNull())
m_frameName = getAttribute(idAttr);
if (Frame* parentFrame = document()->frame())
m_frameName = parentFrame->tree()->uniqueChildName(m_frameName);
openURL();
}
void HTMLFrameElementBase::setNameAndOpenURLCallback(Node* n)
{
static_cast<HTMLFrameElementBase*>(n)->setNameAndOpenURL();
}
void HTMLFrameElementBase::insertedIntoDocument()
{
HTMLFrameOwnerElement::insertedIntoDocument();
// We delay frame loading until after the render tree is fully constructed.
// Othewise, a synchronous load that executed JavaScript would see incorrect
// (0) values for the frame's renderer-dependent properties, like width.
m_shouldOpenURLAfterAttach = true;
}
void HTMLFrameElementBase::removedFromDocument()
{
m_shouldOpenURLAfterAttach = false;
HTMLFrameOwnerElement::removedFromDocument();
}
void HTMLFrameElementBase::attach()
{
if (m_shouldOpenURLAfterAttach) {
m_shouldOpenURLAfterAttach = false;
queuePostAttachCallback(&HTMLFrameElementBase::setNameAndOpenURLCallback, this);
}
HTMLFrameOwnerElement::attach();
if (RenderPart* renderPart = toRenderPart(renderer())) {
if (Frame* frame = contentFrame())
renderPart->setWidget(frame->view());
}
}
KURL HTMLFrameElementBase::location() const
{
return document()->completeURL(getAttribute(srcAttr));
}
void HTMLFrameElementBase::setLocation(const String& str)
{
Settings* settings = document()->settings();
if (settings && settings->needsAcrobatFrameReloadingQuirk() && m_URL == str)
return;
m_URL = AtomicString(str);
if (inDocument())
openURL();
}
bool HTMLFrameElementBase::supportsFocus() const
{
return true;
}
void HTMLFrameElementBase::setFocus(bool received)
{
HTMLFrameOwnerElement::setFocus(received);
if (Page* page = document()->page())
page->focusController()->setFocusedFrame(received ? contentFrame() : 0);
}
bool HTMLFrameElementBase::isURLAttribute(Attribute *attr) const
{
return attr->name() == srcAttr;
}
int HTMLFrameElementBase::width() const
{
if (!renderer())
return 0;
document()->updateLayoutIgnorePendingStylesheets();
return toRenderBox(renderer())->width();
}
int HTMLFrameElementBase::height() const
{
if (!renderer())
return 0;
document()->updateLayoutIgnorePendingStylesheets();
return toRenderBox(renderer())->height();
}
} // namespace WebCore
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