formcontrolelementwithstate.h

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
 *
 * 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 FormControlElementWithState_h
#define FormControlElementWithState_h

namespace WebCore {

class Document;
class Element;
class FormControlElement;
class String;

class FormControlElementWithState { 
public:
    virtual ~FormControlElementWithState() { }

    virtual bool saveState(String& value) const = 0;
    virtual void restoreState(const String& value) = 0;

    // Every FormControlElementWithState class, is also a FormControlElement class by definition.
    virtual FormControlElement* toFormControlElement() = 0;

protected:
    FormControlElementWithState() { }

    static void registerFormControlElementWithState(FormControlElementWithState*, Document*);
    static void unregisterFormControlElementWithState(FormControlElementWithState*, Document*);
    static void finishParsingChildren(FormControlElementWithState*, Document*);
};

FormControlElementWithState* toFormControlElementWithState(Element*);

}

#endif