source: webkit/trunk/Source/WebCore/rendering/RenderTreeMutationDisallowedScope.cpp

Last change on this file was 265630, checked in by Alan Bujtas, 5 years ago

Add RenderTreeMutationDisallowedScope to track intrusive render tree mutations
https://bugs.webkit.org/show_bug.cgi?id=215463
<rdar://problem/67012831>

Reviewed by Simon Fraser.

RenderLayer::enclosingScrollableLayer should not mutate the render tree accidentally.
This is related to <rdar://problem/64739768>.

  • Sources.txt:
  • WebCore.xcodeproj/project.pbxproj:
  • rendering/RenderTreeMutationDisallowedScope.cpp: Added.
  • rendering/RenderTreeMutationDisallowedScope.h: Added.

(WebCore::RenderTreeMutationDisallowedScope::RenderTreeMutationDisallowedScope):
(WebCore::RenderTreeMutationDisallowedScope::~RenderTreeMutationDisallowedScope):
(WebCore::RenderTreeMutationDisallowedScope::isMutationAllowed):

  • rendering/updating/RenderTreeBuilder.cpp:

(WebCore::RenderTreeBuilder::destroy):

File size: 1.5 KB
Line 
1/*
2 * Copyright (C) 2020 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "RenderTreeMutationDisallowedScope.h"
28
29namespace WebCore {
30
31RenderTreeMutationDisallowedScope* RenderTreeMutationDisallowedScope::s_currentMutationAssertion = nullptr;
32
33}
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