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// This may look like C code, but it's really -*- C++ -*-
/*
 * Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.
 *
 * See the LICENSE file for terms of use.
 */
#ifndef EXT_COMPONENT_H_
#define EXT_COMPONENT_H_

#include <Wt/Ext/Widget>

namespace Wt {
  namespace Ext {

/*! \class Component Wt/Ext/Component Wt/Ext/Component
 *  \brief An abstract base class for widgets that can be visually disabled.
 *
 * %Component is the abstract base class of all major %Ext widgets,
 * and offers an API to enable or disable a widget.
 *
 * \ingroup ext
 */
class WT_EXT_API Component : public Widget
{
protected:
  Component(WContainerWidget *parent = 0);

public:
  /*! \brief Enable or disable the widget.
   */
  void setEnabled(bool how);

  /*! \brief Enable the widget.
   */
  void enable();

  /*! \brief Disable the widget.
   */
  void disable();

  /*! \brief Return if enabled.
   */
  bool isEnabled() const { return enabled_; }

protected:
  virtual void createConfig(std::ostream& config);

private:
  bool enabled_;

  void undoEnable();
  bool wasEnabled_;
};

  }
}

#endif // EXT_COMPONENT_H_