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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* 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) 2004-2023 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 "Document.h"
#include "ElementInlines.h"
#include "EventLoop.h"
#include "FocusController.h"
#include "FrameLoader.h"
#include "HTMLNames.h"
#include "JSDOMBindingSecurity.h"
#include "LocalFrame.h"
#include "LocalFrameView.h"
#include "Page.h"
#include "RenderWidget.h"
#include "ScriptController.h"
#include "Settings.h"
#include "SubframeLoader.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/URL.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLFrameElementBase);
using namespace HTMLNames;
HTMLFrameElementBase::HTMLFrameElementBase(const QualifiedName& tagName, Document& document)
: HTMLFrameOwnerElement(tagName, document, CreateHTMLFrameElementBase)
{
}
bool HTMLFrameElementBase::canLoadScriptURL(const URL& scriptURL) const
{
return canLoadURL(scriptURL);
}
bool HTMLFrameElementBase::canLoad() const
{
// FIXME: Why is it valuable to return true when m_frameURL is empty?
// FIXME: After openURL replaces an empty URL with the blank URL, this may no longer necessarily return true.
return m_frameURL.isEmpty() || canLoadURL(m_frameURL);
}
bool HTMLFrameElementBase::canLoadURL(const String& relativeURL) const
{
return canLoadURL(document().completeURL(relativeURL));
}
// Note that unlike HTMLPlugInImageElement::canLoadURL this uses ScriptController::canAccessFromCurrentOrigin.
bool HTMLFrameElementBase::canLoadURL(const URL& completeURL) const
{
if (completeURL.protocolIsJavaScript()) {
RefPtr<Document> contentDocument = this->contentDocument();
if (contentDocument && !ScriptController::canAccessFromCurrentOrigin(contentDocument->frame(), document()))
return false;
}
return !isProhibitedSelfReference(completeURL);
}
void HTMLFrameElementBase::openURL(LockHistory lockHistory, LockBackForwardList lockBackForwardList)
{
if (!canLoad())
return;
if (m_frameURL.isEmpty())
m_frameURL = AtomString { aboutBlankURL().string() };
RefPtr parentFrame { document().frame() };
if (!parentFrame)
return;
auto frameName = getNameAttribute();
if (frameName.isNull() && UNLIKELY(document().settings().needsFrameNameFallbackToIdQuirk()))
frameName = getIdAttribute();
if (shouldLoadFrameLazily()) {
parentFrame->loader().subframeLoader().createFrameIfNecessary(*this, frameName);
return;
}
document().willLoadFrameElement(document().completeURL(m_frameURL));
parentFrame->loader().subframeLoader().requestFrame(*this, m_frameURL, frameName, lockHistory, lockBackForwardList);
}
void HTMLFrameElementBase::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
// FIXME: trimming whitespace is probably redundant with the URL parser
if (name == srcdocAttr) {
if (newValue.isNull())
setLocation(attributeWithoutSynchronization(srcAttr).string().trim(isASCIIWhitespace));
else
setLocation("about:srcdoc"_s);
} else if (name == srcAttr && !hasAttributeWithoutSynchronization(srcdocAttr))
setLocation(newValue.string().trim(isASCIIWhitespace));
else
HTMLFrameOwnerElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
Node::InsertedIntoAncestorResult HTMLFrameElementBase::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
HTMLFrameOwnerElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
if (insertionType.connectedToDocument)
return InsertedIntoAncestorResult::NeedsPostInsertionCallback;
return InsertedIntoAncestorResult::Done;
}
void HTMLFrameElementBase::didFinishInsertingNode()
{
if (!isConnected())
return;
// DocumentFragments don't kick off any loads.
if (!document().frame())
return;
if (!SubframeLoadingDisabler::canLoadFrame(*this))
return;
if (!renderer())
invalidateStyleAndRenderersForSubtree();
auto work = [this, weakThis = WeakPtr { *this }] {
if (!weakThis)
return;
Ref<HTMLFrameElementBase> protectedThis { *this };
m_openingURLAfterInserting = true;
if (isConnected())
openURL();
m_openingURLAfterInserting = false;
};
if (!m_openingURLAfterInserting)
work();
else
document().eventLoop().queueTask(TaskSource::DOMManipulation, WTFMove(work));
}
void HTMLFrameElementBase::didAttachRenderers()
{
if (RenderWidget* part = renderWidget()) {
if (RefPtr frame = dynamicDowncast<LocalFrame>(contentFrame()))
part->setWidget(frame->view());
}
}
void HTMLFrameElementBase::setLocation(const String& str)
{
if (document().settings().needsAcrobatFrameReloadingQuirk() && m_frameURL == str)
return;
m_frameURL = AtomString(str);
if (isConnected())
openURL(LockHistory::No, LockBackForwardList::No);
}
void HTMLFrameElementBase::setLocation(JSC::JSGlobalObject& state, const String& newLocation)
{
if (WTF::protocolIsJavaScript(newLocation)) {
if (!BindingSecurity::shouldAllowAccessToNode(state, contentDocument()))
return;
}
setLocation(newLocation);
}
bool HTMLFrameElementBase::supportsFocus() const
{
return true;
}
void HTMLFrameElementBase::setFocus(bool received, FocusVisibility visibility)
{
HTMLFrameOwnerElement::setFocus(received, visibility);
if (Page* page = document().page()) {
CheckedRef focusController { page->focusController() };
if (received)
focusController->setFocusedFrame(dynamicDowncast<LocalFrame>(contentFrame()));
else if (focusController->focusedFrame() == contentFrame()) // Focus may have already been given to another frame, don't take it away.
focusController->setFocusedFrame(nullptr);
}
}
bool HTMLFrameElementBase::isURLAttribute(const Attribute& attribute) const
{
return attribute.name() == srcAttr || attribute.name() == longdescAttr || HTMLFrameOwnerElement::isURLAttribute(attribute);
}
bool HTMLFrameElementBase::isHTMLContentAttribute(const Attribute& attribute) const
{
return attribute.name() == srcdocAttr || HTMLFrameOwnerElement::isHTMLContentAttribute(attribute);
}
ScrollbarMode HTMLFrameElementBase::scrollingMode() const
{
auto scrollingAttribute = attributeWithoutSynchronization(scrollingAttr);
return equalLettersIgnoringASCIICase(scrollingAttribute, "no"_s)
|| equalLettersIgnoringASCIICase(scrollingAttribute, "noscroll"_s)
|| equalLettersIgnoringASCIICase(scrollingAttribute, "off"_s)
? ScrollbarMode::AlwaysOff : ScrollbarMode::Auto;
}
} // namespace WebCore
|
