/*****************************************************************************
 * vlc_interaction.h: structures and function for user interaction
 *****************************************************************************
 * Copyright (C) 1999-2004 VideoLAN
 * $Id: vlc_interaction.h 7954 2004-06-07 22:19:12Z fenrir $
 *
 * Authors: Clément Stenac <zorglub@videolan.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/**
 * This structure describes an interaction widget
 */
struct user_widget_t
{
    int             i_type;             //< Type identifier;
    char           *psz_text;           //< Free text

    vlc_value_t     val;
};

/**
 * Possible widget types
 */
enum
{
    WIDGET_TEXT,                        //< Text display
    WIDGET_PROGRESS,                    //< A progress bar
    WIDGET_INPUT_TEXT                   //< Input (backed up by a variable)
};

/**
 * This structure describes a piece of interaction with the user
 */
struct interaction_dialog_t
{
    int             i_id;               //< Unique ID
    int             i_type;             //< Type identifier
    char           *psz_title;          //< Title
    char           *psz_description;    //< Descriptor string

    int             i_widgets;          //< Nu,ber of dialog widgets
    user_widget_t **pp_widgets;         //< Dialog widgets

    void *          p_private;          //< Private interface data

    int             i_status;           //< Dialog status;
    int             i_action;           //< Action to perform;
    int             i_flags;            //< Misc flags
    int             i_return;           //< Return status

    interaction_t  *p_interaction;      //< Parent interaction object
    vlc_object_t   *p_parent;           //< The vlc object that asked
                                        //for interaction
};

/**
 * Possible flags . Reusable and button types
 */
#define DIALOG_REUSABLE      0x01
#define DIALOG_OK_CANCEL     0x02
#define DIALOG_YES_NO        0x04
#define DIALOG_YES_NO_CANCEL 0x04
#define DIALOG_CLEAR_NOSHOW  0x08
#define DIALOG_GOT_ANSWER    0x10

/**
 * Possible return codes
 */
enum
{
    DIALOG_DEFAULT,
    DIALOG_OK_YES,
    DIALOG_NO,
    DIALOG_CANCELLED
};

/**
 * Possible status
 */
enum
{
    NEW_DIALOG,                 //< Just created
    SENT_DIALOG,                //< Sent to interface
    UPDATED_DIALOG,             //< Update to send
    ANSWERED_DIALOG,            //< Got "answer"
    HIDING_DIALOG,              //< Hiding requested
    HIDDEN_DIALOG,              //< Now hidden. Requesting destruction
    DESTROYED_DIALOG,           //< Interface has destroyed it
};

/**
 * Possible interaction types
 */
enum
{
    INTERACT_PROGRESS,          //< Progress bar (in the main interface ?)
    INTERACT_DIALOG_ONEWAY,     //< Dialog box without feedback
    INTERACT_DIALOG_TWOWAY,     //< Dialog box with feedback
};

/**
 * Predefined reusable dialogs
 */
enum
{
    DIALOG_FIRST,
    DIALOG_ERRORS,

    DIALOG_LAST_PREDEFINED,
};

/**
 * This structure contains the active interaction dialogs, and is
 * used by teh manager
 */
struct interaction_t
{
    VLC_COMMON_MEMBERS

    int                         i_dialogs;      //< Number of dialogs
    interaction_dialog_t      **pp_dialogs;     //< Dialogs

    intf_thread_t              *p_intf;         //< Interface to use

    int                         i_last_id;      //< Last attributed ID
};
/**
 * Possible actions
 */
enum
{
    INTERACT_NEW,
    INTERACT_UPDATE,
    INTERACT_HIDE,
    INTERACT_DESTROY
};

/***************************************************************************
 * Exported symbols
 ***************************************************************************/

#define intf_Interact( a,b ) __intf_Interact( VLC_OBJECT(a), b )
VLC_EXPORT( int,__intf_Interact,( vlc_object_t *,interaction_dialog_t * ) );

#define intf_UserFatal( a, c, d, e... ) __intf_UserFatal( a,c,d, ## e )
VLC_EXPORT( void, __intf_UserFatal,( vlc_object_t*, const char*, const char*, ...) );
#define intf_UserLoginPassword( a, b, c, d, e... ) __intf_UserLoginPassword( a,b,c,d,e)
VLC_EXPORT( int, __intf_UserLoginPassword,( vlc_object_t*, const char*, const char*, char **, char **) );
#define intf_UserYesNo( a, b, c ) __intf_UserYesNo( a,b,c )
VLC_EXPORT( int, __intf_UserYesNo,( vlc_object_t*, const char*, const char*) );

VLC_EXPORT( void, intf_InteractionManage,( playlist_t *) );
VLC_EXPORT( void, intf_InteractionDestroy,( interaction_t *) );
