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/*
* Copyright (C) 2012 Intel Corporation. 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 THE COPYRIGHT HOLDER "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 THE COPYRIGHT HOLDER 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_VIEWPORT_STYLE_RESOLVER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_VIEWPORT_STYLE_RESOLVER_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/rule_set.h"
#include "third_party/blink/renderer/core/css_property_names.h"
#include "third_party/blink/renderer/core/page/viewport_description.h"
#include "third_party/blink/renderer/platform/length.h"
namespace blink {
class ComputedStyle;
class Document;
class DocumentStyleSheetCollection;
class MutableCSSPropertyValueSet;
class StyleRuleViewport;
class CORE_EXPORT ViewportStyleResolver
: public GarbageCollectedFinalized<ViewportStyleResolver> {
public:
static ViewportStyleResolver* Create(Document& document) {
return new ViewportStyleResolver(document);
}
void InitialStyleChanged();
void InitialViewportChanged();
void SetNeedsCollectRules();
bool NeedsUpdate() const { return needs_update_; }
void UpdateViewport(DocumentStyleSheetCollection&);
void CollectViewportRulesFromAuthorSheet(const CSSStyleSheet&);
void Trace(blink::Visitor*);
private:
explicit ViewportStyleResolver(Document&);
void Reset();
void Resolve();
enum Origin { kUserAgentOrigin, kAuthorOrigin };
enum UpdateType { kNoUpdate, kResolve, kCollectRules };
void CollectViewportRulesFromUASheets();
void CollectViewportChildRules(const HeapVector<Member<StyleRuleBase>>&,
Origin);
void CollectViewportRulesFromImports(StyleSheetContents&);
void CollectViewportRulesFromAuthorSheetContents(StyleSheetContents&);
void AddViewportRule(StyleRuleViewport&, Origin);
float ViewportArgumentValue(CSSPropertyID) const;
Length ViewportLengthValue(CSSPropertyID);
mojom::ViewportFit ViewportFitValue() const;
Member<Document> document_;
Member<MutableCSSPropertyValueSet> property_set_;
Member<MediaQueryEvaluator> initial_viewport_medium_;
scoped_refptr<ComputedStyle> initial_style_;
MediaQueryResultList viewport_dependent_media_query_results_;
MediaQueryResultList device_dependent_media_query_results_;
bool has_author_style_ = false;
bool has_viewport_units_ = false;
UpdateType needs_update_ = kCollectRules;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_RESOLVER_VIEWPORT_STYLE_RESOLVER_H_
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