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/*****************************************************************************
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 r playlistinfo.m: MacOS X interface module
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 *****************************************************************************
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 * Copyright (C) 2002-2007 the VideoLAN team
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 * $Id$
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 *
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 * Authors: Benjamin Pracht <bigben at videolan dot org>
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 *          Felix Kühne <fkuehne at videolan dot org>
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 *
 * 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.
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 *
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 * 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
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/

#include "intf.h"
#include "playlistinfo.h"
#include "playlist.h"

/*****************************************************************************
 * VLCPlaylistInfo Implementation
 *****************************************************************************/

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@implementation VLCInfo

- (id)init
{
    self = [super init];

    if( self != nil )
    {
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        p_item = NULL;
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        o_statUpdateTimer = nil;
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    }
    return( self );
}

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- (void)awakeFromNib
{
    [o_info_window setExcludedFromWindowsMenu: TRUE];

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    [o_info_window setTitle: _NS("Information")];
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    [o_uri_lbl setStringValue: _NS("URI")];
    [o_title_lbl setStringValue: _NS("Title")];
    [o_author_lbl setStringValue: _NS("Author")];
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    [o_btn_ok setTitle: _NS("OK")];
    [o_btn_cancel setTitle: _NS("Cancel")];
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    [[o_tab_view tabViewItemAtIndex: 0] setLabel: _NS("General")];
    [[o_tab_view tabViewItemAtIndex: 1] setLabel: _NS("Advanced Information")];
    [[o_tab_view tabViewItemAtIndex: 2] setLabel: _NS("Statistics")];
    [o_tab_view selectTabViewItemAtIndex: 0];

    /* constants defined in vlc_meta.h */
    [o_genre_lbl setStringValue: _NS(VLC_META_GENRE)];
    [o_copyright_lbl setStringValue: _NS(VLC_META_COPYRIGHT)];
    [o_collection_lbl setStringValue: _NS(VLC_META_COLLECTION)];
    [o_seqNum_lbl setStringValue: _NS(VLC_META_SEQ_NUM)];
    [o_description_lbl setStringValue: _NS(VLC_META_DESCRIPTION)];
    [o_rating_lbl setStringValue: _NS(VLC_META_RATING)];
    [o_date_lbl setStringValue: _NS(VLC_META_DATE)];
    [o_language_lbl setStringValue: _NS(VLC_META_LANGUAGE)];
    [o_nowPlaying_lbl setStringValue: _NS(VLC_META_NOW_PLAYING)];
    [o_publisher_lbl setStringValue: _NS(VLC_META_PUBLISHER)];
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    /* statistics */
    [o_input_box setTitle: _NS("Input")];
    [o_read_bytes_lbl setStringValue: _NS("Read at media")];
    [o_input_bitrate_lbl setStringValue: _NS("Input bitrate")];
    [o_demux_bytes_lbl setStringValue: _NS("Demuxed")];
    [o_demux_bitrate_lbl setStringValue: _NS("Stream bitrate")];
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    [o_video_box setTitle: _NS("Video")];
    [o_video_decoded_lbl setStringValue: _NS("Decoded blocks")];
    [o_displayed_lbl setStringValue: _NS("Displayed frames")];
    [o_lost_frames_lbl setStringValue: _NS("Lost frames")];
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	[o_fps_lbl setStringValue: _NS("Frames per Second")];
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    [o_sout_box setTitle: _NS("Streaming")];
    [o_sent_packets_lbl setStringValue: _NS("Sent packets")];
    [o_sent_bytes_lbl setStringValue: _NS("Sent bytes")];
    [o_sent_bitrate_lbl setStringValue: _NS("Send rate")];
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    [o_audio_box setTitle: _NS("Audio")];
    [o_audio_decoded_lbl setStringValue: _NS("Decoded blocks")];
    [o_played_abuffers_lbl setStringValue: _NS("Played buffers")];
    [o_lost_abuffers_lbl setStringValue: _NS("Lost buffers")];
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}

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- (void)dealloc
{
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    /* make sure that the timer is released in any case */
    if( [o_statUpdateTimer isValid] )
        [o_statUpdateTimer invalidate];

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    if ( o_statUpdateTimer )
        [o_statUpdateTimer release];
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    [super dealloc];
}
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- (IBAction)togglePlaylistInfoPanel:(id)sender
{
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    if( [o_info_window isVisible] )
    {
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        [self windowShouldClose: nil];
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        [o_info_window orderOut: sender];
    }
    else
    {
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        p_item = [[[VLCMain sharedInstance] getPlaylist] selectedPlaylistItem];
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        [self initPanel:sender];
    }
}
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- (IBAction)toggleInfoPanel:(id)sender
{
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    if( [o_info_window isVisible] )
    {
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        [self windowShouldClose: nil];
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        [o_info_window orderOut: sender];
    }
    else
    {
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        intf_thread_t * p_intf = VLCIntf;
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        playlist_t * p_playlist = pl_Yield( p_intf );
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        p_item = p_playlist->status.p_item;
        vlc_object_release( p_playlist );
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        [self initPanel:sender];
    }
}
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- (void)initPanel:(id)sender
{
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    BOOL b_stats = config_GetInt(VLCIntf, "stats");
    if( b_stats )
    {
        o_statUpdateTimer = [NSTimer scheduledTimerWithTimeInterval: 1
            target: self selector: @selector(updateStatistics:)
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            userInfo: nil repeats: YES];
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        [o_statUpdateTimer fire];
        [o_statUpdateTimer retain];
    }
    else
    {
        if( [o_tab_view numberOfTabViewItems] > 2 )
            [o_tab_view removeTabViewItem: [o_tab_view tabViewItemAtIndex: 2]];
    }

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    [self updatePanel];
    [o_info_window makeKeyAndOrderFront: sender];
}

- (void)updatePanel
{
    /* make sure that we got the current item and not an outdated one */
    intf_thread_t * p_intf = VLCIntf;
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        playlist_t * p_playlist = pl_Yield( p_intf );
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    p_item = p_playlist->status.p_item;
    vlc_object_release( p_playlist );
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    /* check whether our item is valid, because we would crash if not */
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    if(! [self isItemInPlaylist: p_item] ) return;

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    /* fill uri info */
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    char *psz_uri = input_item_GetURI( p_item->p_input );
    if( psz_uri )
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    {
        [o_uri_txt setStringValue:
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            ([NSString stringWithUTF8String:psz_uri] == nil ) ?
            [NSString stringWithCString:psz_uri] :
            [NSString stringWithUTF8String:psz_uri]];
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    }
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    free( psz_uri );
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#define SET( foo, bar ) \
    char *psz_##foo = input_item_Get##bar ( p_item->p_input ); \
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    [self setMeta: psz_##foo forLabel: o_##foo##_txt]; \
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    free( psz_##foo );
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    /* fill the other fields */
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    SET( title, Title );
    SET( author, Artist );
    SET( collection, Album );
    SET( seqNum, TrackNum );
    SET( genre, Genre );
    SET( copyright, Copyright );
    SET( rating, Rating );
    SET( publisher, Publisher );
    SET( nowPlaying, NowPlaying );
    SET( language, Language );
    SET( date, Date );

#undef SET
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    /* reload the advanced table */
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    [[VLCInfoTreeItem rootItem] refresh];
    [o_outline_view reloadData];
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    /* update the stats once to display p_item change faster */
    [self updateStatistics: nil];
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}

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- (void)setMeta: (char *)psz_meta forLabel: (id)theItem
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{
    if( psz_meta != NULL && *psz_meta)
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        [theItem setStringValue:
            ([NSString stringWithUTF8String:psz_meta] == nil ) ?
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            [NSString stringWithCString:psz_meta] :
            [NSString stringWithUTF8String:psz_meta]];
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    else
        [theItem setStringValue: @"-"];
}

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- (void)updateStatistics:(NSTimer*)theTimer
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{
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    if( [self isItemInPlaylist: p_item] )
    {
        /* we can only do that if there's a valid input around */
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        vlc_mutex_lock( &p_item->p_input->p_stats->lock );
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        /* input */
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        [o_read_bytes_txt setStringValue: [NSString stringWithFormat:
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            @"%8.0f kB", (float)(p_item->p_input->p_stats->i_read_bytes)/1000]];
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        [o_input_bitrate_txt setStringValue: [NSString stringWithFormat:
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            @"%6.0f kb/s", (float)(p_item->p_input->p_stats->f_input_bitrate)*8000]];
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        [o_demux_bytes_txt setStringValue: [NSString stringWithFormat:
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            @"%8.0f kB", (float)(p_item->p_input->p_stats->i_demux_read_bytes)/1000]];
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        [o_demux_bitrate_txt setStringValue: [NSString stringWithFormat:
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            @"%6.0f kb/s", (float)(p_item->p_input->p_stats->f_demux_bitrate)*8000]];
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        /* Video */
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        [o_video_decoded_txt setStringValue: [NSString stringWithFormat: @"%5i",
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            p_item->p_input->p_stats->i_decoded_video]];
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        [o_displayed_txt setStringValue: [NSString stringWithFormat: @"%5i",
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            p_item->p_input->p_stats->i_displayed_pictures]];
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        [o_lost_frames_txt setStringValue: [NSString stringWithFormat: @"%5i",
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            p_item->p_input->p_stats->i_lost_pictures]];
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        /* Sout */
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        [o_sent_packets_txt setStringValue: [NSString stringWithFormat: @"%5i",
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            p_item->p_input->p_stats->i_sent_packets]];
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        [o_sent_bytes_txt setStringValue: [NSString stringWithFormat: @"%8.0f kB",
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            (float)(p_item->p_input->p_stats->i_sent_bytes)/1000]];
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        [o_sent_bitrate_txt setStringValue: [NSString stringWithFormat:
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            @"%6.0f kb/s", (float)(p_item->p_input->p_stats->f_send_bitrate*8)*1000]];
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        /* Audio */
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        [o_audio_decoded_txt setStringValue: [NSString stringWithFormat: @"%5i",
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            p_item->p_input->p_stats->i_decoded_audio]];
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        [o_played_abuffers_txt setStringValue: [NSString stringWithFormat: @"%5i",
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            p_item->p_input->p_stats->i_played_abuffers]];
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        [o_lost_abuffers_txt setStringValue: [NSString stringWithFormat: @"%5i",
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            p_item->p_input->p_stats->i_lost_abuffers]];
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        vlc_mutex_unlock( &p_item->p_input->p_stats->lock );
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    }
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}

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- (IBAction)infoCancel:(id)sender
{
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    [self windowShouldClose: nil];
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    [o_info_window orderOut: self];
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}


- (IBAction)infoOk:(id)sender
{
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    intf_thread_t * p_intf = VLCIntf;
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    playlist_t * p_playlist = pl_Yield( p_intf );
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    vlc_value_t val;
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    if( [self isItemInPlaylist: p_item] )
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    {
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        input_item_SetName( p_item->p_input, (char*)
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                [[o_title_txt stringValue] UTF8String] );
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        input_item_SetURI( p_item->p_input, (char*)
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                [[o_uri_txt stringValue] UTF8String] );
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        input_item_SetArtist( p_item->p_input, (char*)
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                [[o_author_txt stringValue] UTF8String] );
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        val.b_bool = VLC_TRUE;
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        var_Set( p_playlist, "intf-change", val );
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    }
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    vlc_object_release( p_playlist );
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    [self windowShouldClose: nil];
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    [o_info_window orderOut: self];
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}

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- (playlist_item_t *)getItem
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{
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    return p_item;
}

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- (BOOL)isItemInPlaylist:(playlist_item_t *)p_local_item
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{
    intf_thread_t * p_intf = VLCIntf;
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    playlist_t * p_playlist = pl_Yield( p_intf );
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    int i;

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    for( i = 0 ; i < p_playlist->all_items.i_size ; i++ )
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    {
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        if( ARRAY_VAL( p_playlist->all_items, i ) == p_local_item )
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        {
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            vlc_object_release( p_playlist );
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            return YES;
        }
    }
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    vlc_object_release( p_playlist );
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    return NO;
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}
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- (BOOL)windowShouldClose:(id)sender
{
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    if( [o_statUpdateTimer isValid] )
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        [o_statUpdateTimer invalidate];
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    if( o_statUpdateTimer )
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        [o_statUpdateTimer release];
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    return YES;
}

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@end

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@implementation VLCInfo (NSMenuValidation)

- (BOOL)validateMenuItem:(NSMenuItem *)o_mi
{
    BOOL bEnabled = TRUE;

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    intf_thread_t * p_intf = VLCIntf;
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    input_thread_t * p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT,
                                                       FIND_ANYWHERE );

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    if( [[o_mi title] isEqualToString: _NS("Information")] )
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    {
        if( p_input == NULL )
        {
            bEnabled = FALSE;
        }
    }
    if( p_input ) vlc_object_release( p_input );

    return( bEnabled );
}

@end
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@implementation VLCInfo (NSTableDataSource)
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- (int)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item
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{
    return (item == nil) ? [[VLCInfoTreeItem rootItem] numberOfChildren] : [item numberOfChildren];
}

- (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item {
    return ([item numberOfChildren] > 0);
}

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- (id)outlineView:(NSOutlineView *)outlineView child:(int)index ofItem:(id)item
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{
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    return (item == nil) ? [[VLCInfoTreeItem rootItem] childAtIndex:index] : (id)[item childAtIndex:index];
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}

- (id)outlineView:(NSOutlineView *)outlineView objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
{
    if ([[tableColumn identifier] isEqualToString:@"0"])
    {
        return (item == nil) ? @"" : (id)[item getName];
    }
    else
    {
        return (item == nil) ? @"" : (id)[item getValue];
    }
}

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@end

@implementation VLCInfoTreeItem

static VLCInfoTreeItem *o_root_item = nil;

#define IsALeafNode ((id)-1)

- (id)initWithName: (NSString *)o_item_name value: (NSString *)o_item_value ID: (int)i_id parent:(VLCInfoTreeItem *)o_parent_item
{
    self = [super init];
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    if( self != nil )
    {
        o_name = [o_item_name copy];
        o_value = [o_item_value copy];
        i_object_id = i_id;
        o_parent = o_parent_item;
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        if( [[VLCMain sharedInstance] getInfo] != nil )
            p_item = [[[VLCMain sharedInstance] getInfo] getItem];
        else
            p_item = NULL;
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    }
    return( self );
}

+ (VLCInfoTreeItem *)rootItem {
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    if( o_root_item == nil )
        o_root_item = [[VLCInfoTreeItem alloc] initWithName:@"main" value: @"" ID: 0 parent:nil];
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    return o_root_item;
}

- (void)dealloc
{
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    if( o_children != IsALeafNode ) [o_children release];
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    [o_name release];
    [super dealloc];
}

/* Creates and returns the array of children
 * Loads children incrementally */
- (NSArray *)children
{
    if (o_children == NULL)
    {
        int i;

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        if( [[[VLCMain sharedInstance] getInfo] isItemInPlaylist: p_item] )
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        {
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            if( self == o_root_item )
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            {
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                vlc_mutex_lock( &p_item->p_input->lock );
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                o_children = [[NSMutableArray alloc] initWithCapacity:
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                                                p_item->p_input->i_categories];
                for (i = 0 ; i < p_item->p_input->i_categories ; i++)
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                {
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                    [o_children addObject:[[VLCInfoTreeItem alloc]
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                        initWithName: [NSString stringWithUTF8String:
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                            p_item->p_input->pp_categories[i]->psz_name]
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                        value: @""
                        ID: i
                        parent: self]];
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                }
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                vlc_mutex_unlock( &p_item->p_input->lock );
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            }
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            else if( o_parent == o_root_item )
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            {
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                vlc_mutex_lock( &p_item->p_input->lock );
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                o_children = [[NSMutableArray alloc] initWithCapacity:
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                    p_item->p_input->pp_categories[i_object_id]->i_infos];
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                for (i = 0 ; i < p_item->p_input->pp_categories[i_object_id]->i_infos ; i++)
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                {
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                    [o_children addObject:[[VLCInfoTreeItem alloc]
                    initWithName: [NSString stringWithUTF8String:
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                            p_item->p_input->pp_categories[i_object_id]->pp_infos[i]->psz_name]
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                        value: [NSString stringWithUTF8String:
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                            p_item->p_input->pp_categories[i_object_id]->pp_infos[i]->psz_value ? : ""]
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                        ID: i
                        parent: self]];
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                }
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                vlc_mutex_unlock( &p_item->p_input->lock );
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            }
            else
            {
                o_children = IsALeafNode;
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            }
        }
    }
    return o_children;
}

- (NSString *)getName
{
    return o_name;
}

- (NSString *)getValue
{
    return o_value;
}

- (VLCInfoTreeItem *)childAtIndex:(int)i_index {
    return [[self children] objectAtIndex:i_index];
}

- (int)numberOfChildren {
    id i_tmp = [self children];
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    return ( i_tmp == IsALeafNode ) ? (-1) : (int)[i_tmp count];
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}

- (void)refresh
{
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    p_item = [[[VLCMain sharedInstance] getInfo] getItem];
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    if( o_children != NULL )
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    {
        [o_children release];
        o_children = NULL;
    }
}
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@end