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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
* All rights reserved.
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_SCOPED_STYLE_RESOLVER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_SCOPED_STYLE_RESOLVER_H_
#include "base/macros.h"
#include "third_party/blink/renderer/core/css/active_style_sheets.h"
#include "third_party/blink/renderer/core/css/element_rule_collector.h"
#include "third_party/blink/renderer/core/css/rule_set.h"
#include "third_party/blink/renderer/core/dom/tree_scope.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
#include "third_party/blink/renderer/platform/wtf/hash_set.h"
namespace blink {
class PageRuleCollector;
class PartNames;
class StyleSheetContents;
// ScopedStyleResolver collects the style sheets that occur within a TreeScope
// and provides methods to collect the rules that apply to a given element,
// broken down by what kind of scope they apply to (e.g. shadow host,
// tree-boundary-crossing, etc).
class ScopedStyleResolver final
: public GarbageCollectedFinalized<ScopedStyleResolver> {
public:
static ScopedStyleResolver* Create(TreeScope& scope) {
return new ScopedStyleResolver(scope);
}
const TreeScope& GetTreeScope() const { return *scope_; }
ScopedStyleResolver* Parent() const;
StyleRuleKeyframes* KeyframeStylesForAnimation(
const StringImpl* animation_name);
void AppendActiveStyleSheets(unsigned index, const ActiveStyleSheetVector&);
void CollectMatchingAuthorRules(ElementRuleCollector&,
ShadowV0CascadeOrder = kIgnoreCascadeOrder);
void CollectMatchingShadowHostRules(
ElementRuleCollector&,
ShadowV0CascadeOrder = kIgnoreCascadeOrder);
void CollectMatchingSlottedRules(ElementRuleCollector&,
ShadowV0CascadeOrder = kIgnoreCascadeOrder);
void CollectMatchingTreeBoundaryCrossingRules(
ElementRuleCollector&,
ShadowV0CascadeOrder = kIgnoreCascadeOrder);
void CollectMatchingPartPseudoRules(
ElementRuleCollector&,
PartNames& part_names,
ShadowV0CascadeOrder = kIgnoreCascadeOrder);
void MatchPageRules(PageRuleCollector&);
void CollectFeaturesTo(RuleFeatureSet&,
HeapHashSet<Member<const StyleSheetContents>>&
visited_shared_style_sheet_contents) const;
void ResetAuthorStyle();
bool HasDeepOrShadowSelector() const { return has_deep_or_shadow_selector_; }
void SetHasUnresolvedKeyframesRule() {
has_unresolved_keyframes_rule_ = true;
}
bool NeedsAppendAllSheets() const { return needs_append_all_sheets_; }
void SetNeedsAppendAllSheets() { needs_append_all_sheets_ = true; }
static void KeyframesRulesAdded(const TreeScope&);
static ContainerNode& InvalidationRootForTreeScope(const TreeScope&);
void V0ShadowAddedOnV1Document();
void Trace(blink::Visitor*);
private:
explicit ScopedStyleResolver(TreeScope& scope) : scope_(scope) {}
void AddTreeBoundaryCrossingRules(const RuleSet&,
CSSStyleSheet*,
unsigned sheet_index);
void AddSlottedRules(const RuleSet&, CSSStyleSheet*, unsigned sheet_index);
void AddKeyframeRules(const RuleSet&);
void AddFontFaceRules(const RuleSet&);
void AddKeyframeStyle(StyleRuleKeyframes*);
Member<TreeScope> scope_;
HeapVector<Member<CSSStyleSheet>> author_style_sheets_;
MediaQueryResultList viewport_dependent_media_query_results_;
MediaQueryResultList device_dependent_media_query_results_;
using KeyframesRuleMap =
HeapHashMap<const StringImpl*, Member<StyleRuleKeyframes>>;
KeyframesRuleMap keyframes_rule_map_;
class RuleSubSet final : public GarbageCollected<RuleSubSet> {
public:
static RuleSubSet* Create(CSSStyleSheet* sheet,
unsigned index,
RuleSet* rules) {
return new RuleSubSet(sheet, index, rules);
}
Member<CSSStyleSheet> parent_style_sheet_;
unsigned parent_index_;
Member<RuleSet> rule_set_;
void Trace(blink::Visitor*);
private:
RuleSubSet(CSSStyleSheet* sheet, unsigned index, RuleSet* rules)
: parent_style_sheet_(sheet), parent_index_(index), rule_set_(rules) {}
};
using CSSStyleSheetRuleSubSet = HeapVector<Member<RuleSubSet>>;
Member<CSSStyleSheetRuleSubSet> tree_boundary_crossing_rule_set_;
Member<CSSStyleSheetRuleSubSet> slotted_rule_set_;
bool has_deep_or_shadow_selector_ = false;
bool has_unresolved_keyframes_rule_ = false;
bool needs_append_all_sheets_ = false;
DISALLOW_COPY_AND_ASSIGN(ScopedStyleResolver);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_SCOPED_STYLE_RESOLVER_H_
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