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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* OWNER OR CONTRIBUTORS 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_SVG_PROPERTIES_SVG_PROPERTY_TEAR_OFF_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_PROPERTIES_SVG_PROPERTY_TEAR_OFF_H_
#include "third_party/blink/renderer/core/svg/properties/svg_property.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
namespace blink {
class ExceptionState;
class SVGAnimatedPropertyBase;
class SVGElement;
enum PropertyIsAnimValType { kPropertyIsNotAnimVal, kPropertyIsAnimVal };
class SVGPropertyTearOffBase : public ScriptWrappable {
public:
~SVGPropertyTearOffBase() override = default;
PropertyIsAnimValType PropertyIsAnimVal() const {
return property_is_anim_val_;
}
bool IsAnimVal() const { return property_is_anim_val_ == kPropertyIsAnimVal; }
bool IsImmutable() const { return IsAnimVal(); }
virtual void CommitChange();
SVGAnimatedPropertyBase* GetBinding() { return binding_; }
SVGElement* ContextElement() const { return context_element_; }
void Bind(SVGAnimatedPropertyBase* binding);
void Trace(Visitor*) override;
static void ThrowReadOnly(ExceptionState&);
protected:
SVGPropertyTearOffBase(SVGAnimatedPropertyBase* binding,
PropertyIsAnimValType property_is_anim_val);
SVGPropertyTearOffBase(SVGElement* context_element);
void EnsureAnimValUpdated();
private:
Member<SVGElement> context_element_;
Member<SVGAnimatedPropertyBase> binding_;
PropertyIsAnimValType property_is_anim_val_;
};
template <typename Property>
class SVGPropertyTearOff : public SVGPropertyTearOffBase {
public:
Property* Target() {
if (IsAnimVal())
EnsureAnimValUpdated();
return target_.Get();
}
void SetTarget(Property* target) { target_ = target; }
void Trace(blink::Visitor* visitor) override {
visitor->Trace(target_);
SVGPropertyTearOffBase::Trace(visitor);
}
protected:
SVGPropertyTearOff(Property* target,
SVGAnimatedPropertyBase* binding,
PropertyIsAnimValType property_is_anim_val)
: SVGPropertyTearOffBase(binding, property_is_anim_val), target_(target) {
DCHECK(target_);
}
SVGPropertyTearOff(Property* target, SVGElement* context_element)
: SVGPropertyTearOffBase(context_element), target_(target) {
DCHECK(target_);
}
private:
Member<Property> target_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_PROPERTIES_SVG_PROPERTY_TEAR_OFF_H_
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