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Side by Side Diff: Source/core/css/TreeBoundaryCrossingRules.cpp

Issue 1298173004: Implement proposed shadow tree cascade order. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Addressed review issues Created 5 years, 4 months ago
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1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
4 * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
5 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All r ights reserved.
6 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
7 * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
8 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.t orchmobile.com/)
9 * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
10 * Copyright (C) Research In Motion Limited 2011. All rights reserved.
11 * Copyright (C) 2013 Google Inc. All rights reserved.
12 *
13 * This library is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU Library General Public
15 * License as published by the Free Software Foundation; either
16 * version 2 of the License, or (at your option) any later version.
17 *
18 * This library is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * Library General Public License for more details.
22 *
23 * You should have received a copy of the GNU Library General Public License
24 * along with this library; see the file COPYING.LIB. If not, write to
25 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 * Boston, MA 02110-1301, USA.
27 */
28
29 #include "config.h"
30 #include "core/css/TreeBoundaryCrossingRules.h"
31
32 #include "core/css/ElementRuleCollector.h"
33 #include "core/css/StylePropertySet.h"
34 #include "core/css/resolver/ScopedStyleResolver.h"
35
36 namespace blink {
37
38 void TreeBoundaryCrossingRules::collectTreeBoundaryCrossingRules(Element* elemen t, ElementRuleCollector& collector, bool includeEmptyRules)
39 {
40 if (m_scopingNodes.isEmpty())
41 return;
42
43 // When comparing rules declared in outer treescopes, outer's rules win.
44 CascadeOrder outerCascadeOrder = size() + size();
45 // When comparing rules declared in inner treescopes, inner's rules win.
46 CascadeOrder innerCascadeOrder = size();
47
48 ASSERT(!collector.scopeContainsLastMatchedElement());
49 collector.setScopeContainsLastMatchedElement(true);
50
51 for (const auto& scope : m_scopingNodes) {
52
53 bool isInnerTreeScope = element->treeScope().isInclusiveAncestorOf(scope ->treeScope());
54 CascadeOrder cascadeOrder = isInnerTreeScope ? innerCascadeOrder : outer CascadeOrder;
55
56 scope->treeScope().scopedStyleResolver()->collectMatchingTreeBoundaryCro ssingRules(collector, includeEmptyRules, cascadeOrder);
57
58 ++innerCascadeOrder;
59 --outerCascadeOrder;
60 }
61
62 collector.setScopeContainsLastMatchedElement(false);
63 }
64
65 void TreeBoundaryCrossingRules::addScope(ContainerNode& scopingNode)
66 {
67 m_scopingNodes.add(&scopingNode);
68 }
69
70 void TreeBoundaryCrossingRules::removeScope(const ContainerNode& scopingNode)
71 {
72 m_scopingNodes.remove(&scopingNode);
73 }
74
75 DEFINE_TRACE(TreeBoundaryCrossingRules)
76 {
77 #if ENABLE(OILPAN)
78 visitor->trace(m_scopingNodes);
79 #endif
80 }
81
82 } // namespace blink
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