Source/WebCore/html/HTMLImageElement.h

/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2004, 2008, 2010 Apple Inc. All rights reserved.
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef HTMLImageElement_h
#define HTMLImageElement_h

#include "GraphicsTypes.h"
#include "HTMLElement.h"
#include "HTMLImageLoader.h"

namespace WebCore {

class HTMLFormElement;

class HTMLImageElement : public HTMLElement {
    friend class HTMLFormElement;
public:
    static PassRefPtr<HTMLImageElement> create(Document*);
    static PassRefPtr<HTMLImageElement> create(const QualifiedName&, Document*, HTMLFormElement*);
    static PassRefPtr<HTMLImageElement> createForJSConstructor(Document*, const int* optionalWidth, const int* optionalHeight);

    virtual ~HTMLImageElement();

    int width(bool ignorePendingStylesheets = false);
    int height(bool ignorePendingStylesheets = false);

    int naturalWidth() const;
    int naturalHeight() const;

    bool isServerMap() const;

    String altText() const;

    CompositeOperator compositeOperator() const { return m_compositeOperator; }

    CachedImage* cachedImage() const { return m_imageLoader.image(); }
    void setCachedImage(CachedImage* i) { m_imageLoader.setImage(i); };

    void setLoadManually(bool loadManually) { m_imageLoader.setLoadManually(loadManually); }

    const AtomicString& alt() const;

    void setHeight(int);

    KURL src() const;
    void setSrc(const String&);

    void setWidth(int);

    int x() const;
    int y() const;

    bool complete() const;

    bool haveFiredLoadEvent() const { return m_imageLoader.haveFiredLoadEvent(); }
    bool hasPendingActivity() const { return !m_imageLoader.haveFiredLoadEvent(); }

    virtual bool canContainRangeEndPoint() const { return false; }

protected:
    HTMLImageElement(const QualifiedName&, Document*, HTMLFormElement* = 0);

    virtual void didMoveToNewDocument(Document* oldDocument) OVERRIDE;

private:
    virtual void parseAttribute(Attribute*) OVERRIDE;
    virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
    virtual void collectStyleForAttribute(Attribute*, StylePropertySet*) OVERRIDE;

    virtual void attach();
    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);

    virtual bool canStartSelection() const { return false; }

    virtual bool isURLAttribute(Attribute*) const;

    virtual bool draggable() const;

    virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const;

    virtual void insertedIntoDocument();
    virtual void insertedIntoTree(bool deep);
    virtual void removedFromTree(bool deep);

    virtual bool shouldRegisterAsNamedItem() const OVERRIDE { return true; }
    virtual bool shouldRegisterAsExtraNamedItem() const OVERRIDE { return true; }

#if ENABLE(MICRODATA)
    virtual String itemValueText() const OVERRIDE;
    virtual void setItemValueText(const String&, ExceptionCode&) OVERRIDE;
#endif

    HTMLImageLoader m_imageLoader;
    HTMLFormElement* m_form;
    CompositeOperator m_compositeOperator;
};

} //namespace

#endif