1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/*
* Copyright (C) 2006-2023 Apple Inc. All rights reserved.
* Copyright (C) 2013 Google 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 "HTMLFrameOwnerElement.h"
#include "FrameLoader.h"
#include "LocalDOMWindow.h"
#include "LocalFrame.h"
#include "RemoteFrame.h"
#include "RemoteFrameClient.h"
#include "RenderWidget.h"
#include "SVGDocument.h"
#include "SVGElementTypeHelpers.h"
#include "ScriptController.h"
#include "ShadowRoot.h"
#include "StyleTreeResolver.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/Ref.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLFrameOwnerElement);
HTMLFrameOwnerElement::HTMLFrameOwnerElement(const QualifiedName& tagName, Document& document, ConstructionType constructionType)
: HTMLElement(tagName, document, constructionType)
{
}
RenderWidget* HTMLFrameOwnerElement::renderWidget() const
{
// HTMLObjectElement and HTMLEmbedElement may return arbitrary renderers
// when using fallback content.
if (!is<RenderWidget>(renderer()))
return nullptr;
return downcast<RenderWidget>(renderer());
}
void HTMLFrameOwnerElement::setContentFrame(Frame& frame)
{
// Make sure we will not end up with two frames referencing the same owner element.
ASSERT(!m_contentFrame || m_contentFrame->ownerElement() != this);
// Disconnected frames should not be allowed to load.
ASSERT(isConnected());
m_contentFrame = frame;
for (RefPtr<ContainerNode> node = this; node; node = node->parentOrShadowHostNode())
node->incrementConnectedSubframeCount();
}
void HTMLFrameOwnerElement::clearContentFrame()
{
if (!m_contentFrame)
return;
m_contentFrame = nullptr;
for (RefPtr<ContainerNode> node = this; node; node = node->parentOrShadowHostNode())
node->decrementConnectedSubframeCount();
}
void HTMLFrameOwnerElement::disconnectContentFrame()
{
if (RefPtr frame = m_contentFrame.get()) {
if (frame->settings().siteIsolationEnabled())
frame->broadcastFrameRemovalToOtherProcesses();
frame->frameDetached();
frame->disconnectOwnerElement();
}
}
HTMLFrameOwnerElement::~HTMLFrameOwnerElement()
{
if (m_contentFrame)
m_contentFrame->disconnectOwnerElement();
}
Document* HTMLFrameOwnerElement::contentDocument() const
{
if (auto* localFrame = dynamicDowncast<LocalFrame>(m_contentFrame.get()))
return localFrame->document();
return nullptr;
}
WindowProxy* HTMLFrameOwnerElement::contentWindow() const
{
return m_contentFrame ? &m_contentFrame->windowProxy() : nullptr;
}
void HTMLFrameOwnerElement::setSandboxFlags(SandboxFlags flags)
{
m_sandboxFlags = flags;
}
bool HTMLFrameOwnerElement::isKeyboardFocusable(KeyboardEvent* event) const
{
return m_contentFrame && HTMLElement::isKeyboardFocusable(event);
}
Document* HTMLFrameOwnerElement::getSVGDocument() const
{
auto* document = contentDocument();
if (is<SVGDocument>(document))
return document;
return nullptr;
}
void HTMLFrameOwnerElement::scheduleInvalidateStyleAndLayerComposition()
{
if (Style::postResolutionCallbacksAreSuspended()) {
RefPtr<HTMLFrameOwnerElement> element = this;
Style::deprecatedQueuePostResolutionCallback([element] {
element->invalidateStyleAndLayerComposition();
});
} else
invalidateStyleAndLayerComposition();
}
bool HTMLFrameOwnerElement::isProhibitedSelfReference(const URL& completeURL) const
{
// We allow one level of self-reference because some websites depend on that, but we don't allow more than one.
bool foundOneSelfReference = false;
for (Frame* frame = document().frame(); frame; frame = frame->tree().parent()) {
auto* localFrame = dynamicDowncast<LocalFrame>(frame);
if (!localFrame)
continue;
// Use creationURL() because url() can be changed via History.replaceState() so it's not reliable.
if (equalIgnoringFragmentIdentifier(localFrame->document()->creationURL(), completeURL)) {
if (foundOneSelfReference)
return true;
foundOneSelfReference = true;
}
}
return false;
}
bool SubframeLoadingDisabler::canLoadFrame(HTMLFrameOwnerElement& owner)
{
for (RefPtr<ContainerNode> node = &owner; node; node = node->parentOrShadowHostNode()) {
if (disabledSubtreeRoots().contains(node.get()))
return false;
}
return true;
}
} // namespace WebCore
|
