/*
 * Authors:
 *   Ted Gould <ted@gould.cx>
 *
 * Copyright (C) 2005,2007-2008 Authors
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */

#ifndef INKSCAPE_EXTENSION_DIALOG_H__
#define INKSCAPE_EXTENSION_DIALOG_H__

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#if GLIBMM_DISABLE_DEPRECATED && HAVE_GLIBMM_THREADS_H
#include <glibmm/threads.h>
#endif

#include <gtkmm/dialog.h>
#include <glibmm/value.h>
#include <glibmm/ustring.h>


namespace Gtk {
class CheckButton;
}

namespace Inkscape {
namespace Extension {
class Effect;
class ExecutionEnv;
class Parameter;

/** \brief  A class to represent the preferences for an extension */
class PrefDialog : public Gtk::Dialog {
    /** \brief  Help string if it exists */
    gchar const * _help;
    /** \brief  Name of the extension */
    Glib::ustring _name;

    /** \brief  A pointer to the OK button */
    Gtk::Button * _button_ok;
    /** \brief  A pointer to the CANCEL button */
    Gtk::Button * _button_cancel;

    /** \brief  Button to control live preview */
    Gtk::Widget * _button_preview;
    /** \brief  Checkbox for the preview */
    Gtk::CheckButton * _checkbox_preview;

    /** \brief  Parameter to control live preview */
    Parameter * _param_preview;

    /** \brief  XML to define the live effects parameter on the dialog */
    static const char * live_param_xml;

    /** \brief Signal that the user is changing the live effect state */
    sigc::signal<void> _signal_preview;
    /** \brief Signal that one of the parameters change */
    sigc::signal<void> _signal_param_change;

    /** \brief  If this is the preferences for an effect, the effect
                that we're working with. */
    Effect * _effect;
    /** \brief  If we're executing in preview mode here is the execution
                environment for the effect. */
    ExecutionEnv * _exEnv;

    /** \brief  The timer used to make it so that parameters don't respond
                directly and allows for changes. */
    sigc::connection _timersig;

    void preview_toggle(void);
    void param_change(void);
    bool param_timer_expire(void);
    void on_response (int signal);

public:
    PrefDialog (Glib::ustring name,
                gchar const * help,
                Gtk::Widget * controls = NULL,
                Effect * effect = NULL);
    virtual ~PrefDialog ();
};


};}; /* namespace Inkscape, Extension */

#endif /* INKSCAPE_EXTENSION_DIALOG_H__ */

/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
