menus.cpp

/*****************************************************************************
 * menus.cpp : Qt menus
 *****************************************************************************
 * Copyright © 2006-2011 the VideoLAN team
 * $Id$
 *
 * Authors: Clément Stenac <zorglub@videolan.org>
 *          Jean-Baptiste Kempf <jb@videolan.org>
 *          Jean-Philippe André <jpeg@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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/** \todo
 * - Remove static currentGroup
 */

#define __STDC_FORMAT_MACROS 1
#define __STDC_CONSTANT_MACROS 1

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <vlc_common.h>
#include <vlc_intf_strings.h>
#include <vlc_vout.h>              /* vout_thread_t */

#include "menus.hpp"

#include "main_interface.hpp"      /* View modifications */
#include "dialogs_provider.hpp"    /* Dialogs display */
#include "input_manager.hpp"       /* Input Management */
#include "recents.hpp"             /* Recent Items */
#include "actions_manager.hpp"     /* Actions Management: play+volume */
#include "extensions_manager.hpp"  /* Extensions menu*/

#include <QMenu>
#include <QMenuBar>
#include <QAction>
#include <QActionGroup>
#include <QSignalMapper>
#include <QSystemTrayIcon>

/*
  This file defines the main menus and the pop-up menu (right-click menu)
  and the systray menu (in that order in the file)

  There are 4 menus that have to be rebuilt everytime there are called:
  Audio, Video, Navigation, view
  4 functions are building those menus: AudioMenu, VideoMenu, NavigMenu, View
  and 3 functions associated are collecting the objects :
  InputAutoMenuBuilder, AudioAutoMenuBuilder, VideoAutoMenuBuilder.

  A QSignalMapper decides when to rebuild those menus cf MenuFunc in the .hpp
  Just before one of those menus are aboutToShow(), they are rebuild.
  */

#define STATIC_ENTRY "__static__"
#define ENTRY_ALWAYS_ENABLED "__ignore__"

enum
{
    ITEM_NORMAL, /* not a checkbox, nor a radio */
    ITEM_CHECK,  /* Checkbox */
    ITEM_RADIO   /* Radiobox */
};

static QActionGroup *currentGroup;

QMenu *QVLCMenu::recentsMenu = NULL;

/**
 * @brief Add static entries to DP in menus
 **/
QAction *addDPStaticEntry( QMenu *menu,
                       const QString& text,
                       const char *icon,
                       const char *member,
                       const char *shortcut = NULL,
                       QAction::MenuRole = QAction::NoRole
                       )
{
    QAction *action = NULL;
#ifndef __APPLE__ /* We don't set icons in menus in MacOS X */
    if( !EMPTY_STR( icon ) )
    {
        if( !EMPTY_STR( shortcut ) )
            action = menu->addAction( QIcon( icon ), text, THEDP,
                                      member, qtr( shortcut ) );
        else
            action = menu->addAction( QIcon( icon ), text, THEDP, member );
    }
    else
#endif
    {
        if( !EMPTY_STR( shortcut ) )
            action = menu->addAction( text, THEDP, member, qtr( shortcut ) );
        else
            action = menu->addAction( text, THEDP, member );
    }
    action->setData( STATIC_ENTRY );
}

/**
 * @brief Add static entries to MIM in menus
 **/
QAction* addMIMStaticEntry( intf_thread_t *p_intf,
                            QMenu *menu,
                            const QString& text,
                            const char *icon,
                            const char *member,
                            bool bStatic = false )
{
    QAction *action;
#ifndef __APPLE__ /* We don't set icons in menus in MacOS X */
    if( !EMPTY_STR( icon ) )
    {
        action = menu->addAction( text, THEMIM,  member );
        action->setIcon( QIcon( icon ) );
    }
    else
#endif
    {
        action = menu->addAction( text, THEMIM, member );
    }
    action->setData( bStatic ? STATIC_ENTRY : ENTRY_ALWAYS_ENABLED );
    return action;
}

/**
 * @brief Enable all static entries of a menu, disable the others
 * @param menu the menu in which the entries will be disabled
 * @param enable if false, disable all entries
 **/
void EnableStaticEntries( QMenu *menu, bool enable = true )
{
    if( !menu ) return;

    QList< QAction* > actions = menu->actions();
    for( int i = 0; i < actions.size(); ++i )
    {
        actions[i]->setEnabled( actions[i]->data().toString()
                                == ENTRY_ALWAYS_ENABLED ||
            /* Be careful here, because data("string").toBool is true */
            ( enable && (actions[i]->data().toString() == STATIC_ENTRY ) ) );
    }
}

/**
 * \return Number of static entries
 **/
inline int DeleteNonStaticEntries( QMenu *menu )
{
    if( !menu ) return VLC_EGENERIC;

    int i_ret = 0;

    QList< QAction* > actions = menu->actions();
    for( int i = 0; i < actions.size(); ++i )
    {
        if( actions[i]->data().toString() != STATIC_ENTRY )
            delete actions[i];
        else
            i_ret++;
    }
    return i_ret;
}

/**
 * \return QAction associated to psz_var variable
 **/
static QAction * FindActionWithVar( QMenu *menu, const char *psz_var )
{
    QList< QAction* > actions = menu->actions();
    for( int i = 0; i < actions.size(); ++i )
    {
        if( actions[i]->data().toString() == psz_var )
            return actions[i];
    }
    return NULL;
}

/*****************************************************************************
 * Definitions of variables for the dynamic menus
 *****************************************************************************/
#define PUSH_VAR( var ) varnames.push_back( var ); \
    objects.push_back( VLC_OBJECT(p_object) )

#define PUSH_INPUTVAR( var ) varnames.push_back( var ); \
    objects.push_back( VLC_OBJECT(p_input) );

#define PUSH_SEPARATOR if( objects.size() != i_last_separator ) { \
    objects.push_back( 0 ); varnames.push_back( "" ); \
    i_last_separator = objects.size(); }

static int InputAutoMenuBuilder( input_thread_t *p_object,
        vector<vlc_object_t *> &objects,
        vector<const char *> &varnames )
{
    PUSH_VAR( "bookmark" );
    PUSH_VAR( "title" );
    PUSH_VAR( "chapter" );
    PUSH_VAR( "navigation" );
    PUSH_VAR( "program" );
    return VLC_SUCCESS;
}

static int VideoAutoMenuBuilder( vout_thread_t *p_object,
        input_thread_t *p_input,
        vector<vlc_object_t *> &objects,
        vector<const char *> &varnames )
{
    PUSH_INPUTVAR( "video-es" );
    PUSH_INPUTVAR( "spu-es" );
    PUSH_VAR( "fullscreen" );
    PUSH_VAR( "video-on-top" );
    PUSH_VAR( "video-wallpaper" );
#ifdef WIN32
    PUSH_VAR( "direct3d-desktop" );
#endif
    PUSH_VAR( "video-snapshot" );
    PUSH_VAR( "zoom" );
    PUSH_VAR( "autoscale" );
    PUSH_VAR( "aspect-ratio" );
    PUSH_VAR( "crop" );
    PUSH_VAR( "deinterlace" );
    PUSH_VAR( "deinterlace-mode" );
    PUSH_VAR( "postprocess" );

    return VLC_SUCCESS;
}

static int AudioAutoMenuBuilder( aout_instance_t *p_object,
        input_thread_t *p_input,
        vector<vlc_object_t *> &objects,
        vector<const char *> &varnames )
{
    PUSH_INPUTVAR( "audio-es" );
    PUSH_VAR( "audio-channels" );
    PUSH_VAR( "audio-device" );
    PUSH_VAR( "visual" );
    return VLC_SUCCESS;
}

/*****************************************************************************
 * All normal menus
 * Simple Code
 *****************************************************************************/

// Static menu
static inline void addMenuToMainbar( QMenu *func, QString title, QMenuBar *bar ) {
    func->setTitle( title );
    bar->addMenu( func);
}

// Dynamic menu
#define BAR_DADD( func, title, id ) { \
    QMenu *_menu = func; _menu->setTitle( title ); bar->addMenu( _menu ); \
    MenuFunc *f = new MenuFunc( _menu, id ); \
    CONNECT( _menu, aboutToShow(), THEDP->menusUpdateMapper, map() ); \
    THEDP->menusUpdateMapper->setMapping( _menu, f ); }

// Add a simple action
static inline void addAction( QMenu *_menu, QVariant val, QString title ) {
    QAction *_action = new QAction( title, _menu );
    _action->setData( val );
    _menu->addAction( _action );
}

// Add an action with a submenu
static inline void addActionWithSubmenu( QMenu *_menu, QVariant val, QString title ) {
    QAction *_action = new QAction( title, _menu );
    _action->setData( val );
    _action->setMenu( new QMenu( _menu ) );
    _menu->addAction( _action );
}

// Add an action that is a checkbox
static inline void addActionWithCheckbox( QMenu *_menu, QVariant val, QString title ) {
    QAction *_action = new QAction( title, _menu );
    _action->setData( val );
    _action->setCheckable( true );
    _menu->addAction( _action );
}

/**
 * Main Menu Bar Creation
 **/
void QVLCMenu::createMenuBar( MainInterface *mi,
                              intf_thread_t *p_intf )
{
    /* QMainWindows->menuBar()
       gives the QProcess::destroyed timeout issue on Cleanlooks style with
       setDesktopAware set to false */
    QMenuBar *bar = mi->menuBar();

    addMenuToMainbar( FileMenu( p_intf, bar ), qtr( "&Media" ), bar );

    /* Dynamic menus, rebuilt before being showed */
    BAR_DADD( NavigMenu( p_intf, bar ), qtr( "P&layback" ), 3 );
    BAR_DADD( AudioMenu( p_intf, bar ), qtr( "&Audio" ), 1 );
    BAR_DADD( VideoMenu( p_intf, bar ), qtr( "&Video" ), 2 );

    addMenuToMainbar( ToolsMenu( bar ), qtr( "&Tools" ), bar );

    /* View menu, a bit different */
    BAR_DADD( ViewMenu( p_intf, _menu, mi ), qtr( "V&iew" ), 4 );

    addMenuToMainbar( HelpMenu( bar ), qtr( "&Help" ), bar );

}

/**
 * Media ( File ) Menu
 * Opening, streaming and quit
 **/
QMenu *QVLCMenu::FileMenu( intf_thread_t *p_intf, QWidget *parent )
{
    QMenu *menu = new QMenu( parent );

    addDPStaticEntry( menu, qtr( "&Open File..." ),
        ":/type/file-asym", SLOT( simpleOpenDialog() ), "Ctrl+O" );
    addDPStaticEntry( menu, qtr( "Advanced Open File..." ),
        ":/type/file-asym", SLOT( openFileDialog() ), "Ctrl+Shift+O" );
    addDPStaticEntry( menu, qtr( I_OP_OPDIR ),
        ":/type/folder-grey", SLOT( PLOpenDir() ), "Ctrl+F" );
    addDPStaticEntry( menu, qtr( "Open &Disc..." ),
        ":/type/disc", SLOT( openDiscDialog() ), "Ctrl+D" );
    addDPStaticEntry( menu, qtr( "Open &Network Stream..." ),
        ":/type/network", SLOT( openNetDialog() ), "Ctrl+N" );
    addDPStaticEntry( menu, qtr( "Open &Capture Device..." ),
        ":/type/capture-card", SLOT( openCaptureDialog() ), "Ctrl+C" );

    menu->addSeparator();
    addDPStaticEntry( menu, qtr( "Open &Location from clipboard" ),
                      NULL, SLOT( openUrlDialog() ), "Ctrl+V" );

    if( var_InheritBool( p_intf, "qt-recentplay" ) )
    {
        recentsMenu = new QMenu( qtr( "Open &Recent Media" ), menu );
        updateRecents( p_intf );
        menu->addMenu( recentsMenu );
    }
    menu->addSeparator();

    addDPStaticEntry( menu, qtr( I_PL_SAVE ), "", SLOT( saveAPlaylist() ),
        "Ctrl+Y" );
    menu->addSeparator();

#ifdef ENABLE_SOUT
    addDPStaticEntry( menu, qtr( "Conve&rt / Save..." ), "",
        SLOT( openAndTranscodingDialogs() ), "Ctrl+R" );
    addDPStaticEntry( menu, qtr( "&Stream..." ),
        ":/menu/stream", SLOT( openAndStreamingDialogs() ), "Ctrl+S" );
    menu->addSeparator();
#endif

    addDPStaticEntry( menu, qtr( "&Quit" ) ,
        ":/menu/quit", SLOT( quit() ), "Ctrl+Q" );
    return menu;
}

/**
 * Tools, like Media Information, Preferences or Messages
 **/
QMenu *QVLCMenu::ToolsMenu( QMenu *menu )
{
    addDPStaticEntry( menu, qtr( "&Effects and Filters"), ":/menu/settings",
            SLOT( extendedDialog() ), "Ctrl+E" );

    addDPStaticEntry( menu, qtr( "&Track Synchronization"), ":/menu/settings",
            SLOT( synchroDialog() ), "" );

    addDPStaticEntry( menu, qtr( I_MENU_INFO ) , ":/menu/info",
        SLOT( mediaInfoDialog() ), "Ctrl+I" );
    addDPStaticEntry( menu, qtr( I_MENU_CODECINFO ) ,
        ":/menu/info", SLOT( mediaCodecDialog() ), "Ctrl+J" );

#ifdef ENABLE_VLM
    addDPStaticEntry( menu, qtr( I_MENU_VLM ), "", SLOT( vlmDialog() ),
        "Ctrl+W" );
#endif

    addDPStaticEntry( menu, qtr( "Program Guide" ), "", SLOT( epgDialog() ),
        "" );

    addDPStaticEntry( menu, qtr( I_MENU_MSG ),
        ":/menu/messages", SLOT( messagesDialog() ), "Ctrl+M" );

    addDPStaticEntry( menu, qtr( "Plu&gins and extensions" ),
        "", SLOT( pluginDialog() ) );
    menu->addSeparator();

    addDPStaticEntry( menu, qtr( "Customi&ze Interface..." ),
        ":/menu/preferences", SLOT( toolbarDialog() ) );

    addDPStaticEntry( menu, qtr( "&Preferences" ),
        ":/menu/preferences", SLOT( prefsDialog() ), "Ctrl+P", QAction::PreferencesRole );

    return menu;
}

/**
 * View Menu
 * Interface modification, load other interfaces, activate Extensions
 **/
QMenu *QVLCMenu::ViewMenu( intf_thread_t *p_intf, QMenu *current, MainInterface *_mi )
{
    QAction *action;
    QMenu *menu;

    MainInterface *mi = _mi ? _mi : p_intf->p_sys->p_mi;
    assert( mi );

    if( !current )
    {
        menu = new QMenu( qtr( "&View" ), mi );
    }
    else
    {
        menu = current;
        //menu->clear();
        //HACK menu->clear() does not delete submenus
        QList<QAction*> actions = menu->actions();
        foreach( QAction *a, actions )
        {
            QMenu *m = a->menu();
            if( a->parent() == menu ) delete a;
            else menu->removeAction( a );
            if( m && m->parent() == menu ) delete m;
        }
    }

    menu->addAction(
#ifndef __APPLE__
            QIcon( ":/menu/playlist_menu" ),
#endif
            qtr( "Play&list" ), mi,
            SLOT( togglePlaylist() ), qtr( "Ctrl+L" ) );

    menu->addSeparator();

    /* Minimal View */
    action = menu->addAction( qtr( "Mi&nimal View" ) );
    action->setShortcut( qtr( "Ctrl+H" ) );
    action->setCheckable( true );
    action->setChecked( (mi->getControlsVisibilityStatus() & CONTROLS_HIDDEN ) );

    CONNECT( action, triggered( bool ), mi, toggleMinimalView( bool ) );
    CONNECT( mi, minimalViewToggled( bool ), action, setChecked( bool ) );

    /* FullScreen View */
    action = menu->addAction( qtr( "&Fullscreen Interface" ), mi,
            SLOT( toggleInterfaceFullScreen() ), QString( "F11" ) );
    action->setCheckable( true );
    action->setChecked( mi->isInterfaceFullScreen() );
    CONNECT( mi, fullscreenInterfaceToggled( bool ),
             action, setChecked( bool ) );

    /* Advanced Controls */
    action = menu->addAction( qtr( "&Advanced Controls" ), mi,
            SLOT( toggleAdvancedButtons() ) );
    action->setCheckable( true );
    if( mi->getControlsVisibilityStatus() & CONTROLS_ADVANCED )
        action->setChecked( true );

    /* Docked Playlist */
    action = menu->addAction( qtr( "Docked Playlist" ) );
    action->setCheckable( true );
    action->setChecked( mi->isPlDocked() );
    CONNECT( action, triggered( bool ), mi, dockPlaylist( bool ) );

#if 0 /* For Visualisations. Not yet working */
    adv = menu->addAction( qtr( "Visualizations selector" ), mi,
                           SLOT( visual() ) );
    adv->setCheckable( true );
    if( visual_selector_enabled ) adv->setChecked( true );
#endif

    menu->addSeparator();

    InterfacesMenu( p_intf, menu );
    menu->addSeparator();

    /* Extensions */
    ExtensionsMenu( p_intf, menu );

    return menu;
}

/**
 * Interface Sub-Menu, to list extras interface and skins
 **/
QMenu *QVLCMenu::InterfacesMenu( intf_thread_t *p_intf, QMenu *current )
{
    vector<vlc_object_t *> objects;
    vector<const char *> varnames;
    varnames.push_back( "intf-add" );
    objects.push_back( VLC_OBJECT(p_intf) );

    return Populate( p_intf, current, varnames, objects );
}

/**
 * Extensions menu: populate the current menu with extensions
 **/
void QVLCMenu::ExtensionsMenu( intf_thread_t *p_intf, QMenu *extMenu )
{
    /* Get ExtensionsManager and load extensions if needed */
    ExtensionsManager *extMgr = ExtensionsManager::getInstance( p_intf );

    if( !var_InheritBool( p_intf, "qt-autoload-extensions")
        && !extMgr->isLoaded() )
    {
        return;
    }

    if( !extMgr->isLoaded() && !extMgr->cannotLoad() )
    {
        extMgr->loadExtensions();
    }

    /* Let the ExtensionsManager build itself the menu */
    extMenu->addSeparator();
    extMgr->menu( extMenu );
}

/**
 * Main Audio Menu
 **/
QMenu *QVLCMenu::AudioMenu( intf_thread_t *p_intf, QMenu * current )
{
    vector<vlc_object_t *> objects;
    vector<const char *> varnames;
    aout_instance_t *p_aout;
    input_thread_t *p_input;

    if( current->isEmpty() )
    {
        addActionWithSubmenu( current, "audio-es", qtr( "Audio &Track" ) );
        addActionWithSubmenu( current, "audio-channels", qtr( "Audio &Channels" ) );
        addActionWithSubmenu( current, "audio-device", qtr( "Audio &Device" ) );
        current->addSeparator();

        addActionWithSubmenu( current, "visual", qtr( "&Visualizations" ) );
        current->addSeparator();

        QAction *action = current->addAction( qtr( "Increase Volume" ),
                ActionsManager::getInstance( p_intf ), SLOT( AudioUp() ) );
        action->setData( STATIC_ENTRY );
        action = current->addAction( qtr( "Decrease Volume" ),
                ActionsManager::getInstance( p_intf ), SLOT( AudioDown() ) );
        action->setData( STATIC_ENTRY );
        action = current->addAction( qtr( "Mute" ),
                ActionsManager::getInstance( p_intf ), SLOT( toggleMuteAudio() ) );
        action->setData( STATIC_ENTRY );
    }

    p_input = THEMIM->getInput();
    p_aout = THEMIM->getAout();
    EnableStaticEntries( current, ( p_aout != NULL ) );
    AudioAutoMenuBuilder( p_aout, p_input, objects, varnames );
    if( p_aout )
    {
        vlc_object_release( p_aout );
    }

    return Populate( p_intf, current, varnames, objects );
}

/* Subtitles */
QMenu *QVLCMenu::SubMenu( intf_thread_t *p_intf, QMenu *current )
{
    QAction *action;
    QMenu *submenu = new QMenu( qtr( "&Subtitles Track" ), current );
    action = current->addMenu( submenu );
    action->setData( "spu-es" );
    addDPStaticEntry( submenu, qtr( "Open File..." ), "",
                      SLOT( loadSubtitlesFile() ) );
    submenu->addSeparator();
    return submenu;
}

/**
 * Main Video Menu
 * Subtitles are part of Video.
 **/
QMenu *QVLCMenu::VideoMenu( intf_thread_t *p_intf, QMenu *current, bool b_subtitle )
{
    vout_thread_t *p_vout;
    input_thread_t *p_input;
    vector<vlc_object_t *> objects;
    vector<const char *> varnames;

    if( current->isEmpty() )
    {
        addActionWithSubmenu( current, "video-es", qtr( "Video &Track" ) );
        if( b_subtitle)
            SubMenu( p_intf, current );

        current->addSeparator();

        addActionWithCheckbox( current, "fullscreen", qtr( "&Fullscreen" ) );
        addActionWithCheckbox( current, "autoscale", qtr( "Always Fit &Window" ) );
        addActionWithCheckbox( current, "video-on-top", qtr( "Always &on Top" ) );
#ifdef WIN32
        addActionWithCheckbox( current, "direct3d-desktop", qtr( "Display on &Desktop" ) );
#endif
        addAction( current, "video-snapshot", qtr( "Take &Snapshot" ) );
#ifdef WIN32
        addActionWithCheckbox( current, "video-wallpaper", qtr( "Set as Wall&paper" ) );
#endif
        current->addSeparator();

        addActionWithSubmenu( current, "zoom", qtr( "&Zoom" ) );
        addActionWithSubmenu( current, "aspect-ratio", qtr( "&Aspect Ratio" ) );
        addActionWithSubmenu( current, "crop", qtr( "&Crop" ) );
        addActionWithSubmenu( current, "deinterlace", qtr( "&Deinterlace" ) );
        addActionWithSubmenu( current, "deinterlace-mode", qtr( "&Deinterlace mode" ) );
        addActionWithSubmenu( current, "postprocess", qtr( "&Post processing" ) );
    }

    p_input = THEMIM->getInput();

    p_vout = THEMIM->getVout();
    VideoAutoMenuBuilder( p_vout, p_input, objects, varnames );

    if( p_vout )
        vlc_object_release( p_vout );

    return Populate( p_intf, current, varnames, objects );
}

/**
 * Navigation Menu
 * For DVD, MP4, MOV and other chapter based format
 **/
QMenu *QVLCMenu::NavigMenu( intf_thread_t *p_intf, QMenu *menu )
{
    QAction *action;

    addActionWithSubmenu( menu, "title", qtr( "T&itle" ) );
    addActionWithSubmenu( menu, "chapter", qtr( "&Chapter" ) );
    addActionWithSubmenu( menu, "navigation", qtr( "&Navigation" ) );
    addActionWithSubmenu( menu, "program", qtr( "&Program" ) );

    /* FixMe: sync I_MENU_BOOKMARK string */
    QMenu *submenu = new QMenu( qtr( "Custom &Bookmarks" ), menu );
    addDPStaticEntry( submenu, qtr( "&Manage" ), "",
                      SLOT( bookmarksDialog() ), "Ctrl+B" );
    submenu->addSeparator();
    action = menu->addMenu( submenu );
    action->setData( "bookmark" );

    menu->addSeparator();
    PopupMenuPlaylistControlEntries( menu, p_intf );
    PopupMenuControlEntries( menu, p_intf );

    EnableStaticEntries( menu, ( THEMIM->getInput() != NULL ) );
    return RebuildNavigMenu( p_intf, menu );
}

QMenu *QVLCMenu::RebuildNavigMenu( intf_thread_t *p_intf, QMenu *menu )
{
    /* */
    input_thread_t *p_object;
    vector<vlc_object_t *> objects;
    vector<const char *> varnames;

    /* Get the input and hold it */
    p_object = THEMIM->getInput();

    InputAutoMenuBuilder( p_object, objects, varnames );

    menu->addSeparator();

    /* Title and so on */
    PUSH_VAR( "prev-title" );
    PUSH_VAR( "next-title" );
    PUSH_VAR( "prev-chapter" );
    PUSH_VAR( "next-chapter" );

    EnableStaticEntries( menu, (p_object != NULL ) );
    return Populate( p_intf, menu, varnames, objects );
}

/**
 * Help/About Menu
**/
QMenu *QVLCMenu::HelpMenu( QWidget *parent )
{
    QMenu *menu = new QMenu( parent );
    addDPStaticEntry( menu, qtr( "&Help..." ) ,
        ":/menu/help", SLOT( helpDialog() ), "F1" );
#ifdef UPDATE_CHECK
    addDPStaticEntry( menu, qtr( "Check for &Updates..." ) , "",
                      SLOT( updateDialog() ) );
#endif
    menu->addSeparator();
    addDPStaticEntry( menu, qtr( I_MENU_ABOUT ), ":/menu/info",
            SLOT( aboutDialog() ), "Shift+F1", QAction::AboutRole );
    return menu;
}

/*****************************************************************************
 * Popup menus - Right Click menus                                           *
 *****************************************************************************/
#define POPUP_BOILERPLATE \
    static QMenu* menu = NULL;  \
    delete menu; menu = NULL; \
    if( !show ) \
        return; \
    unsigned int i_last_separator = 0; \
    vector<vlc_object_t *> objects; \
    vector<const char *> varnames; \
    input_thread_t *p_input = THEMIM->getInput();

#define CREATE_POPUP \
    menu = new QMenu(); \
    Populate( p_intf, menu, varnames, objects ); \
    menu->popup( QCursor::pos() ); \
    i_last_separator = 0;