WebCore/FormControlElementWithState.h

   1 /*
   2  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public License
  15  * along with this library; see the file COPYING.LIB.  If not, write to
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #ifndef FormControlElementWithState_h
  22 #define FormControlElementWithState_h
  23
  24 namespace WebCore {
  25
  26 class Document;
  27 class Element;
  28 class FormControlElement;
  29 class String;
  30
  31 class FormControlElementWithState {
  32 public:
  33     virtual ~FormControlElementWithState() { }
  34
  35     virtual bool saveState(String& value) const = 0;
  36     virtual void restoreState(const String& value) = 0;
  37
  38     // Every FormControlElementWithState class, is also a FormControlElement class by definition.
  39     virtual FormControlElement* toFormControlElement() = 0;
  40
  41 protected:
  42     FormControlElementWithState() { }
  43
  44     static void registerFormControlElementWithState(FormControlElementWithState*, Document*);
  45     static void unregisterFormControlElementWithState(FormControlElementWithState*, Document*);
  46     static void finishParsingChildren(FormControlElementWithState*, Document*);
  47 };
  48
  49 FormControlElementWithState* toFormControlElementWithState(Element*);
  50
  51 }
  52
  53 #endif