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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_CSS_INTERPOLATION_ENVIRONMENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_CSS_INTERPOLATION_ENVIRONMENT_H_
#include "third_party/blink/renderer/core/animation/interpolation_environment.h"
#include "third_party/blink/renderer/core/css/resolver/style_resolver_state.h"
namespace blink {
class CascadeResolver;
class ComputedStyle;
class StyleCascade;
class CSSInterpolationEnvironment : public InterpolationEnvironment {
public:
explicit CSSInterpolationEnvironment(const InterpolationTypesMap& map,
StyleResolverState& state,
StyleCascade* cascade,
CascadeResolver* cascade_resolver)
: InterpolationEnvironment(map),
state_(&state),
style_(state.Style()),
cascade_(cascade),
cascade_resolver_(cascade_resolver) {}
explicit CSSInterpolationEnvironment(const InterpolationTypesMap& map,
const ComputedStyle& style)
: InterpolationEnvironment(map), style_(&style) {}
bool IsCSS() const final { return true; }
StyleResolverState& GetState() {
DCHECK(state_);
return *state_;
}
const StyleResolverState& GetState() const {
DCHECK(state_);
return *state_;
}
const ComputedStyle& Style() const {
DCHECK(style_);
return *style_;
}
// TODO(crbug.com/985023): This effective violates const.
const CSSValue* Resolve(const PropertyHandle&, const CSSValue*) const;
private:
StyleResolverState* state_ = nullptr;
const ComputedStyle* style_ = nullptr;
StyleCascade* cascade_ = nullptr;
CascadeResolver* cascade_resolver_ = nullptr;
};
template <>
struct DowncastTraits<CSSInterpolationEnvironment> {
static bool AllowFrom(const InterpolationEnvironment& value) {
return value.IsCSS();
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_CSS_INTERPOLATION_ENVIRONMENT_H_
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