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/*****************************************************************************
 * menus.cpp : wxWindows plugin for vlc
 *****************************************************************************
 * Copyright (C) 2000-2001 VideoLAN
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 * $Id: menus.cpp,v 1.6 2003/05/11 13:22:23 gbazin Exp $
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 *
 * Authors: Gildas Bazin <gbazin@netcourrier.com>
 *
 * 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.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>                                      /* malloc(), free() */
#include <errno.h>                                                 /* ENOMEM */
#include <string.h>                                            /* strerror() */
#include <stdio.h>

#include <vlc/vlc.h>

#ifdef WIN32                                                 /* mingw32 hack */
#undef Yield
#undef CreateDialog
#endif

/* Let vlc take care of the i18n stuff */
#define WXINTL_NO_GETTEXT_MACRO

#include <wx/wxprec.h>
#include <wx/wx.h>
#include <wx/listctrl.h>

#include <vlc/intf.h>

#include "wxwindows.h"

class wxMenuItemExt: public wxMenuItem
{
public:
    /* Constructor */
    wxMenuItemExt( wxMenu* parentMenu, int id, const wxString& text,
                   const wxString& helpString, wxItemKind kind,
                   char *_psz_var, int _i_object_id, vlc_value_t _val,
                   int _i_val_type );

    virtual ~wxMenuItemExt();

    char *psz_var;
    int  i_val_type;
    int  i_object_id;
    vlc_value_t val;

private:

};

/*****************************************************************************
 * Event Table.
 *****************************************************************************/

/* IDs for the controls and the menu commands */
enum
{
    /* menu items */
    FirstAutoGenerated_Event = wxID_HIGHEST + 1000,
    MenuDummy_Event,
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    AudioMenu_Events,
    VideoMenu_Events = wxID_HIGHEST + 1100,
    PopupMenu_Events = wxID_HIGHEST + 1200,
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};

BEGIN_EVENT_TABLE(Menu, wxMenu)
    /* Menu events */
    EVT_MENU(MenuDummy_Event, Menu::OnEntrySelected)
END_EVENT_TABLE()

BEGIN_EVENT_TABLE(MenuEvtHandler, wxEvtHandler)
    EVT_MENU(-1, MenuEvtHandler::OnMenuEvent)
END_EVENT_TABLE()

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void PopupMenu( intf_thread_t *_p_intf, Interface *_p_main_interface,
                const wxPoint& pos )
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{
    vlc_object_t *p_object;
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    char *ppsz_varnames[19];
    int pi_objects[19];
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    int i = 0;

    /* Initializations */
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    memset( pi_objects, 0, 19 * sizeof(int) );
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    /* Audio menu */
    ppsz_varnames[i++] = _("Audio menu");
    ppsz_varnames[i++] = NULL; /* Separator */

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_AOUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        ppsz_varnames[i] = "audio-device";
        pi_objects[i++] = p_object->i_object_id;
        ppsz_varnames[i] = "audio-channels";
        pi_objects[i++] = p_object->i_object_id;
        vlc_object_release( p_object );
    }

    /* Video menu */
    ppsz_varnames[i++] = NULL; /* Separator */
    ppsz_varnames[i++] = _("Video menu");
    ppsz_varnames[i++] = NULL; /* Separator */

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_VOUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        ppsz_varnames[i] = "fullscreen";
        pi_objects[i++] = p_object->i_object_id;
        vlc_object_release( p_object );
    }

    /* Input menu */
    ppsz_varnames[i++] = NULL; /* Separator */
    ppsz_varnames[i++] = _("Input menu");
    ppsz_varnames[i++] = NULL; /* Separator */

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_INPUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        ppsz_varnames[i] = "title";
        pi_objects[i++] = p_object->i_object_id;
        ppsz_varnames[i] = "chapter";
        pi_objects[i++] = p_object->i_object_id;
        ppsz_varnames[i] = "navigation";
        pi_objects[i++] = p_object->i_object_id;
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        ppsz_varnames[i] = "video-es";
        pi_objects[i++] = p_object->i_object_id;
        ppsz_varnames[i] = "audio-es";
        pi_objects[i++] = p_object->i_object_id;
        ppsz_varnames[i] = "spu-es";
        pi_objects[i++] = p_object->i_object_id;

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        vlc_object_release( p_object );
    }

    /* Misc stuff */
    ppsz_varnames[i++] = NULL; /* Separator */
    ppsz_varnames[i++] = _("Close");

    /* Build menu */
    wxMenu *popupmenu = new Menu( _p_intf, _p_main_interface, i,
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                                  ppsz_varnames, pi_objects,
                                  PopupMenu_Events );
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    _p_main_interface->p_popup_menu = popupmenu;
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    _p_main_interface->PopupMenu( popupmenu, pos.x, pos.y );
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}

wxMenu *AudioMenu( intf_thread_t *_p_intf, Interface *_p_main_interface )
{
    vlc_object_t *p_object;
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    char *ppsz_varnames[5];
    int pi_objects[5];
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    int i = 0;

    /* Initializations */
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    memset( pi_objects, 0, 5 * sizeof(int) );
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    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_AOUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        ppsz_varnames[i] = "audio-device";
        pi_objects[i++] = p_object->i_object_id;
        ppsz_varnames[i] = "audio-channels";
        pi_objects[i++] = p_object->i_object_id;
        vlc_object_release( p_object );
    }

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    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_INPUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        ppsz_varnames[i] = "audio-es";
        pi_objects[i++] = p_object->i_object_id;
        vlc_object_release( p_object );
    }

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    /* Build menu */
    return new Menu( _p_intf, _p_main_interface, i,
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                     ppsz_varnames, pi_objects, AudioMenu_Events );
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}

wxMenu *VideoMenu( intf_thread_t *_p_intf, Interface *_p_main_interface )
{
    vlc_object_t *p_object;
    char *ppsz_varnames[4];
    int pi_objects[4];
    int i = 0;

    /* Initializations */
    memset( pi_objects, 0, 4 * sizeof(int) );

    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_VOUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        ppsz_varnames[i] = "fullscreen";
        pi_objects[i++] = p_object->i_object_id;
        vlc_object_release( p_object );
    }

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    p_object = (vlc_object_t *)vlc_object_find( _p_intf, VLC_OBJECT_INPUT,
                                                FIND_ANYWHERE );
    if( p_object != NULL )
    {
        ppsz_varnames[i] = "video-es";
        pi_objects[i++] = p_object->i_object_id;
        ppsz_varnames[i] = "spu-es";
        pi_objects[i++] = p_object->i_object_id;
        vlc_object_release( p_object );
    }

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    /* Build menu */
    return new Menu( _p_intf, _p_main_interface, i,
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                     ppsz_varnames, pi_objects, VideoMenu_Events );
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}

/*****************************************************************************
 * Constructor.
 *****************************************************************************/
Menu::Menu( intf_thread_t *_p_intf, Interface *_p_main_interface,
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            int i_count, char **ppsz_varnames, int *pi_objects,
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            int i_start_id ): wxMenu( )
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{
    vlc_object_t *p_object;
    int i;

    /* Initializations */
    p_intf = _p_intf;
    p_main_interface = _p_main_interface;

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    i_item_id = i_start_id;
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    for( i = 0; i < i_count; i++ )
    {
        if( !ppsz_varnames[i] )
        {
            AppendSeparator();
            continue;
        }

        if( !pi_objects[i] )
        {
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            Append( MenuDummy_Event, wxU(ppsz_varnames[i]) );
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            continue;
        }

        p_object = (vlc_object_t *)vlc_object_get( p_intf, pi_objects[i] );
        if( p_object == NULL ) continue;

        CreateMenuItem( this, ppsz_varnames[i], p_object );
        vlc_object_release( p_object );
    }

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    /* Special case for empty menus */
    if( GetMenuItemCount() == 0 )
    {
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        Append( MenuDummy_Event, wxU(_("Empty")) );
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        Enable( MenuDummy_Event, FALSE );
    }
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}

Menu::~Menu()
{
}

/*****************************************************************************
 * Private methods.
 *****************************************************************************/
void Menu::OnEntrySelected( wxCommandEvent& WXUNUSED(event) )
{
}

void Menu::CreateMenuItem( wxMenu *menu, char *psz_var,
                           vlc_object_t *p_object )
{
    wxMenuItemExt *menuitem;
    vlc_value_t val, text;
    int i_type;

    /* Check the type of the object variable */
    i_type = var_Type( p_object, psz_var );

    switch( i_type & VLC_VAR_TYPE )
    {
    case VLC_VAR_VOID:
    case VLC_VAR_BOOL:
    case VLC_VAR_VARIABLE:
    case VLC_VAR_STRING:
    case VLC_VAR_INTEGER:
        break;
    default:
        /* Variable doesn't exist or isn't handled */
        return;
    }

    /* Make sure we want to display the variable */
    if( i_type & VLC_VAR_HASCHOICE )
    {
        var_Change( p_object, psz_var, VLC_VAR_CHOICESCOUNT, &val, NULL );
        if( val.i_int == 0 ) return;
    }

    /* Get the descriptive name of the variable */
    var_Change( p_object, psz_var, VLC_VAR_GETTEXT, &text, NULL );

    if( i_type & VLC_VAR_HASCHOICE )
    {
        menu->Append( MenuDummy_Event,
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                      wxU(text.psz_string ? text.psz_string : psz_var),
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                      CreateChoicesMenu( psz_var, p_object ),
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                      wxT("")/* Nothing for now (maybe use a GETLONGTEXT) */ );
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        if( text.psz_string ) free( text.psz_string );
        return;
    }


    switch( i_type & VLC_VAR_TYPE )
    {
    case VLC_VAR_VOID:
        menuitem = new wxMenuItemExt( menu, ++i_item_id,
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                                      wxU(text.psz_string ?
                                        text.psz_string : psz_var),
                                      wxT(""), wxITEM_NORMAL, strdup(psz_var),
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                                      p_object->i_object_id, val, i_type );
        menu->Append( menuitem );
        break;

    case VLC_VAR_BOOL:
        menuitem = new wxMenuItemExt( menu, ++i_item_id,
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                                      wxU(text.psz_string ?
                                        text.psz_string : psz_var),
                                      wxT(""), wxITEM_CHECK, strdup(psz_var),
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                                      p_object->i_object_id, val, i_type );
        menu->Append( menuitem );
        Check( i_item_id -1, val.b_bool ? FALSE : TRUE );
        break;

    default:
        if( text.psz_string ) free( text.psz_string );
        return;
    }

    if( text.psz_string ) free( text.psz_string );
}

wxMenu *Menu::CreateChoicesMenu( char *psz_var, vlc_object_t *p_object )
{
    vlc_value_t val, val_list, text_list;
    int i_type, i;

    /* Check the type of the object variable */
    i_type = var_Type( p_object, psz_var );

    /* Make sure we want to display the variable */
    if( i_type & VLC_VAR_HASCHOICE )
    {
        var_Change( p_object, psz_var, VLC_VAR_CHOICESCOUNT, &val, NULL );
        if( val.i_int == 0 ) return NULL;
    }
    else
    {
        return NULL;
    }

    switch( i_type & VLC_VAR_TYPE )
    {
    case VLC_VAR_VOID:
    case VLC_VAR_BOOL:
    case VLC_VAR_VARIABLE:
    case VLC_VAR_STRING:
    case VLC_VAR_INTEGER:
        break;
    default:
        /* Variable doesn't exist or isn't handled */
        return NULL;
    }

    if( var_Get( p_object, psz_var, &val ) < 0 )
    {
        return NULL;
    }

    if( var_Change( p_object, psz_var, VLC_VAR_GETLIST,
                    &val_list, &text_list ) < 0 )
    {
        if( (i_type & VLC_VAR_TYPE) == VLC_VAR_STRING ) free( val.psz_string );
        return NULL;
    }

    wxMenu *menu = new wxMenu;
    for( i = 0; i < val_list.p_list->i_count; i++ )
    {
        vlc_value_t another_val;
        wxMenuItemExt *menuitem;

        switch( i_type & VLC_VAR_TYPE )
        {
        case VLC_VAR_VARIABLE:
          menu->Append( MenuDummy_Event,
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                        wxU(text_list.p_list->p_values[i].psz_string ?
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                        text_list.p_list->p_values[i].psz_string :
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                        val_list.p_list->p_values[i].psz_string),
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                        CreateChoicesMenu(
                            val_list.p_list->p_values[i].psz_string,
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                            p_object ), wxT("") );
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          break;

        case VLC_VAR_STRING:
          another_val.psz_string =
              strdup(val_list.p_list->p_values[i].psz_string);
          menuitem =
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              new wxMenuItemExt( menu, ++i_item_id,
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                                 wxU(text_list.p_list->p_values[i].psz_string ?
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                                 text_list.p_list->p_values[i].psz_string :
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                                 another_val.psz_string),
                                 wxT(""), wxITEM_RADIO, strdup(psz_var),
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                                 p_object->i_object_id, another_val, i_type );

          menu->Append( menuitem );

          if( !strcmp( val.psz_string,
                       val_list.p_list->p_values[i].psz_string ) )
              menu->Check( i_item_id, TRUE );
          break;

        case VLC_VAR_INTEGER:
          menuitem =
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              new wxMenuItemExt( menu, ++i_item_id,
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                                 text_list.p_list->p_values[i].psz_string ?
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                                 wxU(text_list.p_list->p_values[i].psz_string):
                                 wxString::Format(wxT("%d"),
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                                 val_list.p_list->p_values[i].i_int),
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                                 wxT(""), wxITEM_RADIO, strdup(psz_var),
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                                 p_object->i_object_id,
                                 val_list.p_list->p_values[i], i_type );

          menu->Append( menuitem );

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          if( val_list.p_list->p_values[i].i_int == val.i_int )
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              menu->Check( i_item_id, TRUE );
          break;

        default:
          break;
        }
    }

    /* clean up everything */
    if( i_type == VLC_VAR_STRING ) free( val.psz_string );
    var_Change( p_object, psz_var, VLC_VAR_FREELIST, &val_list, &text_list );

    return menu;
}

/*****************************************************************************
 * A small helper class which intercepts all popup menu events
 *****************************************************************************/
MenuEvtHandler::MenuEvtHandler( intf_thread_t *_p_intf,
                                Interface *_p_main_interface )
{
    /* Initializations */
    p_intf = _p_intf;
    p_main_interface = _p_main_interface;
}

MenuEvtHandler::~MenuEvtHandler()
{
}

void MenuEvtHandler::OnMenuEvent( wxCommandEvent& event )
{
    wxMenuItem *p_menuitem;

    /* Check if this is an auto generated menu item */
    if( event.GetId() < FirstAutoGenerated_Event )
    {
        event.Skip();
        return;
    }

    if( (p_menuitem = p_main_interface->GetMenuBar()->FindItem(event.GetId()))
        == NULL )
    {
        if( p_main_interface->p_popup_menu )
        {
            p_menuitem = 
                p_main_interface->p_popup_menu->FindItem( event.GetId() );
        }
    }

    if( p_menuitem )
    {
        wxMenuItemExt *p_menuitemext = (wxMenuItemExt *)p_menuitem;
        vlc_object_t *p_object;

        p_object = (vlc_object_t *)vlc_object_get( p_intf,
                                       p_menuitemext->i_object_id );
        if( p_object == NULL ) return;

        var_Set( p_object, p_menuitemext->psz_var, p_menuitemext->val );

        vlc_object_release( p_object );
    }
    else
        event.Skip();
}

/*****************************************************************************
 * A small helper class which encapsulate wxMenuitem with some other useful
 * things.
 *****************************************************************************/
wxMenuItemExt::wxMenuItemExt( wxMenu* parentMenu, int id, const wxString& text,
    const wxString& helpString, wxItemKind kind,
    char *_psz_var, int _i_object_id, vlc_value_t _val, int _i_val_type ):
    wxMenuItem( parentMenu, id, text, helpString, kind )
{
    /* Initializations */
    psz_var = _psz_var;
    i_val_type = _i_val_type;
    i_object_id = _i_object_id;
    val = _val;
};

wxMenuItemExt::~wxMenuItemExt()
{
    if( psz_var ) free( psz_var );
    if( ((i_val_type & VLC_VAR_TYPE) == VLC_VAR_STRING)
        && val.psz_string ) free( val.psz_string );
};