1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
4 *           (C) 2000 Simon Hausmann (hausmann@kde.org)
5 *           (C) 2001 Dirk Mueller (mueller@kde.org)
6 * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved.
7 * Copyright (C) 2009 Ericsson AB. All rights reserved.
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * Library General Public License for more details.
18 *
19 * You should have received a copy of the GNU Library General Public License
20 * along with this library; see the file COPYING.LIB.  If not, write to
21 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
23 */
24
25#include "config.h"
26#include "core/html/HTMLIFrameElement.h"
27
28#include "CSSPropertyNames.h"
29#include "HTMLNames.h"
30#include "core/dom/NodeRenderingContext.h"
31#include "core/html/HTMLDocument.h"
32#include "core/rendering/RenderIFrame.h"
33
34namespace WebCore {
35
36using namespace HTMLNames;
37
38inline HTMLIFrameElement::HTMLIFrameElement(const QualifiedName& tagName, Document* document)
39    : HTMLFrameElementBase(tagName, document)
40    , m_didLoadNonEmptyDocument(false)
41{
42    ASSERT(hasTagName(iframeTag));
43    ScriptWrappable::init(this);
44    setHasCustomStyleCallbacks();
45}
46
47PassRefPtr<HTMLIFrameElement> HTMLIFrameElement::create(const QualifiedName& tagName, Document* document)
48{
49    return adoptRef(new HTMLIFrameElement(tagName, document));
50}
51
52bool HTMLIFrameElement::isPresentationAttribute(const QualifiedName& name) const
53{
54    if (name == widthAttr || name == heightAttr || name == alignAttr || name == frameborderAttr || name == seamlessAttr)
55        return true;
56    return HTMLFrameElementBase::isPresentationAttribute(name);
57}
58
59void HTMLIFrameElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
60{
61    if (name == widthAttr)
62        addHTMLLengthToStyle(style, CSSPropertyWidth, value);
63    else if (name == heightAttr)
64        addHTMLLengthToStyle(style, CSSPropertyHeight, value);
65    else if (name == alignAttr)
66        applyAlignmentAttributeToStyle(value, style);
67    else if (name == frameborderAttr) {
68        // Frame border doesn't really match the HTML4 spec definition for iframes. It simply adds
69        // a presentational hint that the border should be off if set to zero.
70        if (!value.toInt()) {
71            // Add a rule that nulls out our border width.
72            addPropertyToPresentationAttributeStyle(style, CSSPropertyBorderWidth, 0, CSSPrimitiveValue::CSS_PX);
73        }
74    } else
75        HTMLFrameElementBase::collectStyleForPresentationAttribute(name, value, style);
76}
77
78void HTMLIFrameElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
79{
80    if (name == nameAttr) {
81        if (inDocument() && document()->isHTMLDocument() && !isInShadowTree()) {
82            HTMLDocument* document = toHTMLDocument(this->document());
83            document->removeExtraNamedItem(m_name);
84            document->addExtraNamedItem(value);
85        }
86        m_name = value;
87    } else if (name == sandboxAttr) {
88        String invalidTokens;
89        setSandboxFlags(value.isNull() ? SandboxNone : SecurityContext::parseSandboxPolicy(value, invalidTokens));
90        if (!invalidTokens.isNull())
91            document()->addConsoleMessage(OtherMessageSource, ErrorMessageLevel, "Error while parsing the 'sandbox' attribute: " + invalidTokens);
92    } else if (name == seamlessAttr) {
93        // If we're adding or removing the seamless attribute, we need to force the content document to recalculate its StyleResolver.
94        if (contentDocument())
95            contentDocument()->styleResolverChanged(DeferRecalcStyle);
96    } else
97        HTMLFrameElementBase::parseAttribute(name, value);
98}
99
100bool HTMLIFrameElement::rendererIsNeeded(const NodeRenderingContext& context)
101{
102    return isURLAllowed() && context.style()->display() != NONE;
103}
104
105RenderObject* HTMLIFrameElement::createRenderer(RenderStyle*)
106{
107    return new RenderIFrame(this);
108}
109
110Node::InsertionNotificationRequest HTMLIFrameElement::insertedInto(ContainerNode* insertionPoint)
111{
112    InsertionNotificationRequest result = HTMLFrameElementBase::insertedInto(insertionPoint);
113    if (insertionPoint->inDocument() && document()->isHTMLDocument() && !insertionPoint->isInShadowTree())
114        toHTMLDocument(document())->addExtraNamedItem(m_name);
115    return result;
116}
117
118void HTMLIFrameElement::removedFrom(ContainerNode* insertionPoint)
119{
120    HTMLFrameElementBase::removedFrom(insertionPoint);
121    if (insertionPoint->inDocument() && document()->isHTMLDocument() && !insertionPoint->isInShadowTree())
122        toHTMLDocument(document())->removeExtraNamedItem(m_name);
123}
124
125bool HTMLIFrameElement::shouldDisplaySeamlessly() const
126{
127    return contentDocument() && contentDocument()->shouldDisplaySeamlesslyWithParent();
128}
129
130void HTMLIFrameElement::didRecalcStyle(StyleChange styleChange)
131{
132    if (!shouldDisplaySeamlessly())
133        return;
134    Document* childDocument = contentDocument();
135    if (shouldRecalcStyle(styleChange, childDocument))
136        contentDocument()->recalcStyle(styleChange);
137}
138
139}
140