element_rule_collector.h | Explore in Territory

/*
 * Copyright (C) 1999 Lars Knoll ([email protected])
 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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.
 *
 */

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_ELEMENT_RULE_COLLECTOR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_ELEMENT_RULE_COLLECTOR_H_

#include "base/auto_reset.h"
#include "base/gtest_prod_util.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/stack_allocated.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/container_selector.h"
#include "third_party/blink/renderer/core/css/css_rule_list.h"
#include "third_party/blink/renderer/core/css/part_names.h"
#include "third_party/blink/renderer/core/css/resolver/match_request.h"
#include "third_party/blink/renderer/core/css/resolver/match_result.h"
#include "third_party/blink/renderer/core/css/selector_checker.h"
#include "third_party/blink/renderer/core/css/style_recalc_context.h"
#include "third_party/blink/renderer/core/css/style_request.h"
#include "third_party/blink/renderer/core/style/computed_style_base_constants.h"
#include "third_party/blink/renderer/platform/wtf/ref_counted.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"

namespace blink {

class Element;
class ElementResolveContext;
class ElementRuleCollector;
class HTMLSlotElement;
class RuleData;
class SelectorFilter;
class StyleRuleUsageTracker;

class MatchedRule { … };

}  // namespace blink

WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(…)

namespace blink {

StyleRuleList;

// Manages the process of finding what rules in a RuleSet apply to a given
// Element. These tend to be used several times in different contexts and should
// have ClearMatchedRules called before use.
//
// ElementRuleCollector is designed to be used as a stack object.
// Create one, ask what rules the ElementResolveContext matches
// and then let it go out of scope. In particular, do not change
// values in the RuleSet buckets (which would invalidate the RuleData
// pointers) before you have extracted the results, typically with
// SortAndTransferMatchedRules().
//
// FIXME: Currently it modifies the ComputedStyle but should not!
class CORE_EXPORT ElementRuleCollector { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_ELEMENT_RULE_COLLECTOR_H_
chromium/third_party/blink/renderer/core/css/element_rule_collector.h
