blob: dd02709d92190d1aca081c67d5bc01f981712a70 [file] [log] [blame]
/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2002, 2006, 2012 Apple Computer, Inc.
*
* 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_CSS_RULE_LIST_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_RULE_LIST_H_
#include "base/macros.h"
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
class CSSRule;
class CSSStyleSheet;
class CSSRuleList : public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
virtual unsigned length() const = 0;
virtual CSSRule* item(unsigned index) const = 0;
virtual CSSStyleSheet* GetStyleSheet() const = 0;
protected:
CSSRuleList() = default;
private:
DISALLOW_COPY_AND_ASSIGN(CSSRuleList);
};
class StaticCSSRuleList final : public CSSRuleList {
public:
static StaticCSSRuleList* Create() { return new StaticCSSRuleList(); }
HeapVector<Member<CSSRule>>& Rules() { return rules_; }
CSSStyleSheet* GetStyleSheet() const override { return nullptr; }
void Trace(blink::Visitor*) override;
private:
StaticCSSRuleList();
unsigned length() const override { return rules_.size(); }
CSSRule* item(unsigned index) const override {
return index < rules_.size() ? rules_[index].Get() : nullptr;
}
HeapVector<Member<CSSRule>> rules_;
};
template <class Rule>
class LiveCSSRuleList final : public CSSRuleList {
public:
static LiveCSSRuleList* Create(Rule* rule) {
return new LiveCSSRuleList(rule);
}
void Trace(blink::Visitor* visitor) override {
visitor->Trace(rule_);
CSSRuleList::Trace(visitor);
}
private:
LiveCSSRuleList(Rule* rule) : rule_(rule) {}
unsigned length() const override { return rule_->length(); }
CSSRule* item(unsigned index) const override { return rule_->Item(index); }
CSSStyleSheet* GetStyleSheet() const override {
return rule_->parentStyleSheet();
}
Member<Rule> rule_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_RULE_LIST_H_