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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:
*
* 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.
* 3. 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_HTML_CUSTOM_V0_CUSTOM_ELEMENT_OBSERVER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CUSTOM_V0_CUSTOM_ELEMENT_OBSERVER_H_
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
namespace blink {
class Element;
class V0CustomElementObserver
: public GarbageCollectedFinalized<V0CustomElementObserver> {
public:
virtual ~V0CustomElementObserver() = default;
// API for CustomElement to kick off notifications
static void NotifyElementWasDestroyed(Element*);
virtual void Trace(blink::Visitor* visitor) {}
protected:
V0CustomElementObserver() = default;
void Observe(Element*);
void Unobserve(Element*);
virtual void ElementWasDestroyed(Element* element) { Unobserve(element); }
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CUSTOM_V0_CUSTOM_ELEMENT_OBSERVER_H_
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