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// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_DOM_FONT_FACE_UPDATER_H_
#define COBALT_DOM_FONT_FACE_UPDATER_H_
#include <memory>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "cobalt/cssom/css_rule_visitor.h"
#include "cobalt/dom/font_cache.h"
#include "url/gurl.h"
namespace cobalt {
namespace cssom {
class CSSStyleSheet;
class StyleSheetList;
} // cssom
namespace dom {
// Collect valid FontFaces from CSSStyleSheets and StyleSheetLists and provide
// them to the FontCache, which replaces its previous set with them.
class FontFaceUpdater : public cssom::CSSRuleVisitor {
public:
FontFaceUpdater(const GURL& document_base_url, FontCache* const cache);
~FontFaceUpdater();
void ProcessCSSStyleSheet(
const scoped_refptr<cssom::CSSStyleSheet>& style_sheet);
void ProcessStyleSheetList(
const scoped_refptr<cssom::StyleSheetList>& style_sheet_list);
private:
void VisitCSSStyleRule(cssom::CSSStyleRule* css_style_rule) override {}
void VisitCSSFontFaceRule(
cssom::CSSFontFaceRule* css_font_face_rule) override;
void VisitCSSMediaRule(cssom::CSSMediaRule* css_media_rule) override {}
void VisitCSSKeyframeRule(
cssom::CSSKeyframeRule* css_keyframe_rule) override {}
void VisitCSSKeyframesRule(
cssom::CSSKeyframesRule* css_keyframes_rule) override {}
const GURL& document_base_url_;
FontCache* const cache_;
std::unique_ptr<FontCache::FontFaceMap> font_face_map_;
DISALLOW_COPY_AND_ASSIGN(FontFaceUpdater);
};
} // namespace dom
} // namespace cobalt
#endif // COBALT_DOM_FONT_FACE_UPDATER_H_