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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_HTML_STYLE_ELEMENT_H_
#define COBALT_DOM_HTML_STYLE_ELEMENT_H_
#include <string>
#include "cobalt/base/source_location.h"
#include "cobalt/cssom/css_style_sheet.h"
#include "cobalt/cssom/style_sheet.h"
#include "cobalt/dom/html_element.h"
namespace cobalt {
namespace dom {
class Document;
// The style element allows authors to embed style information in their
// documents.
// https://www.w3.org/TR/html50/document-metadata.html#the-style-element
class HTMLStyleElement : public HTMLElement {
public:
static const char kTagName[];
explicit HTMLStyleElement(Document* document);
// Web API: HTMLStyleElement
std::string type() const { return GetAttribute("type").value_or(""); }
void set_type(const std::string& value) { SetAttribute("type", value); }
// Web API: LinkStyle (implements)
// The sheet attribute must return the associated CSS style sheet for the node
// or null if there is no associated CSS style sheet.
// https://www.w3.org/TR/cssom/#dom-linkstyle-sheet
const scoped_refptr<cssom::StyleSheet>& sheet() const { return style_sheet_; }
// Custom, not in any spec.
//
// From Node.
void OnInsertedIntoDocument() override;
void OnRemovedFromDocument() override;
// From Element.
void OnParserStartTag(
const base::SourceLocation& opening_tag_location) override;
void OnParserEndTag() override;
// From HTMLElement.
scoped_refptr<HTMLStyleElement> AsHTMLStyleElement() override;
DEFINE_WRAPPABLE_TYPE(HTMLStyleElement);
private:
~HTMLStyleElement() override {}
void Process();
// Add this element's style sheet to the style sheet vector.
void CollectStyleSheet(cssom::StyleSheetVector* style_sheets) const override;
// Whether the style element is inserted by parser.
bool is_parser_inserted_;
// SourceLocation for inline style.
base::SourceLocation inline_style_location_;
// The style sheet associated with this element.
scoped_refptr<cssom::StyleSheet> style_sheet_;
};
} // namespace dom
} // namespace cobalt
#endif // COBALT_DOM_HTML_STYLE_ELEMENT_H_