Source/core/dom/DOMSettableTokenList.h

/*
 * Copyright (C) 2010 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef DOMSettableTokenList_h
#define DOMSettableTokenList_h

#include "core/dom/DOMTokenList.h"
#include "core/dom/SpaceSplitString.h"
#include "platform/heap/Handle.h"
#include "wtf/RefCounted.h"
#include "wtf/text/AtomicString.h"

namespace blink {

class ExceptionState;

class DOMSettableTokenListObserver : public WillBeGarbageCollectedMixin {
public:
    virtual void valueChanged() = 0;

    DEFINE_INLINE_VIRTUAL_TRACE() { }
};

class DOMSettableTokenList final
    : public DOMTokenList
#if !ENABLE(OILPAN)
    , public RefCounted<DOMSettableTokenList>
#endif
    {
    DEFINE_WRAPPERTYPEINFO();
    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(DOMSettableTokenList);
public:
    static PassRefPtrWillBeRawPtr<DOMSettableTokenList> create(DOMSettableTokenListObserver* observer = nullptr)
    {
        return adoptRefWillBeNoop(new DOMSettableTokenList(observer));
    }
    ~DOMSettableTokenList() override;

#if !ENABLE(OILPAN)
    void ref() override { RefCounted<DOMSettableTokenList>::ref(); }
    void deref() override { RefCounted<DOMSettableTokenList>::deref(); }
#endif

    unsigned length() const override { return m_tokens.size(); }
    const AtomicString item(unsigned index) const override;

    void add(const Vector<String>&, ExceptionState&) override;
    void remove(const Vector<String>&, ExceptionState&) override;

    const AtomicString& value() const override { return m_value; }
    void setValue(const AtomicString&) override;

    const SpaceSplitString& tokens() const { return m_tokens; }
    void setObserver(DOMSettableTokenListObserver* observer) { m_observer = observer; }

    DECLARE_VIRTUAL_TRACE();

protected:
    explicit DOMSettableTokenList(DOMSettableTokenListObserver*);

private:
    void addInternal(const AtomicString&) override;
    bool containsInternal(const AtomicString&) const override;
    void removeInternal(const AtomicString&) override;

    AtomicString m_value;
    SpaceSplitString m_tokens;
    RawPtrWillBeWeakMember<DOMSettableTokenListObserver> m_observer;
};

} // namespace blink

#endif // DOMSettableTokenList_h