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/*****************************************************************************
 * intf.m: MacOS X interface plugin
 *****************************************************************************
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 * Copyright (C) 2002-2003 VideoLAN
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 * $Id: intf.m,v 1.95 2003/09/20 13:46:00 hartman Exp $
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 *
 * Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
 *          Christophe Massiot <massiot@via.ecp.fr>
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 *          Derk-Jan Hartman <thedj@users.sourceforge.net>
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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.
 * 
 * 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 <sys/param.h>                                    /* for MAXPATHLEN */
#include <string.h>

#include "intf.h"
#include "vout.h"
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#include "prefs.h"
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#include "playlist.h"
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#include "info.h"
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#include "controls.h"
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/*****************************************************************************
 * Local prototypes.
 *****************************************************************************/
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static void Run ( intf_thread_t *p_intf );
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/*****************************************************************************
 * OpenIntf: initialize interface
 *****************************************************************************/
int E_(OpenIntf) ( vlc_object_t *p_this )
{   
    intf_thread_t *p_intf = (intf_thread_t*) p_this;

    p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
    if( p_intf->p_sys == NULL )
    {
        return( 1 );
    }

    memset( p_intf->p_sys, 0, sizeof( *p_intf->p_sys ) );
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    p_intf->p_sys->o_pool = [[NSAutoreleasePool alloc] init];
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    /* Put Cocoa into multithread mode as soon as possible.
     * http://developer.apple.com/techpubs/macosx/Cocoa/
     * TasksAndConcepts/ProgrammingTopics/Multithreading/index.html
     * This thread does absolutely nothing at all. */
    [NSThread detachNewThreadSelector:@selector(self) toTarget:[NSString string] withObject:nil];
    
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    p_intf->p_sys->o_sendport = [[NSPort port] retain];
    p_intf->p_sys->p_sub = msg_Subscribe( p_intf );
    p_intf->pf_run = Run;
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    [[VLCApplication sharedApplication] autorelease];
    [NSApp setIntf: p_intf];

    [NSBundle loadNibNamed: @"MainMenu" owner: NSApp];

    return( 0 );
}

/*****************************************************************************
 * CloseIntf: destroy interface
 *****************************************************************************/
void E_(CloseIntf) ( vlc_object_t *p_this )
{
    intf_thread_t *p_intf = (intf_thread_t*) p_this;

    msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );

    [p_intf->p_sys->o_sendport release];
    [p_intf->p_sys->o_pool release];

    free( p_intf->p_sys );
}

/*****************************************************************************
 * Run: main loop
 *****************************************************************************/
static void Run( intf_thread_t *p_intf )
{
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    /* Do it again - for some unknown reason, vlc_thread_create() often
     * fails to go to real-time priority with the first launched thread
     * (???) --Meuuh */
    vlc_thread_set_priority( p_intf, VLC_THREAD_PRIORITY_LOW );

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    [NSApp run];
}

/*****************************************************************************
 * VLCApplication implementation 
 *****************************************************************************/
@implementation VLCApplication

- (NSString *)localizedString:(char *)psz
{
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    NSString * o_str = nil;

    if( psz != NULL )
    {
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        o_str = [[[NSString alloc] initWithUTF8String: psz] autorelease];
    }
    if ( o_str == NULL )
    {
        msg_Err( p_intf, "could not translate: %s", psz );
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    }

    return( o_str );
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}

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- (char *)delocalizeString:(NSString *)id
{
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    NSData * o_data = [id dataUsingEncoding: NSUTF8StringEncoding
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                          allowLossyConversion: NO];
    char * psz_string;

    if ( o_data == nil )
    {
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        o_data = [id dataUsingEncoding: NSUTF8StringEncoding
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                     allowLossyConversion: YES];
        psz_string = malloc( [o_data length] + 1 ); 
        [o_data getBytes: psz_string];
        psz_string[ [o_data length] ] = '\0';
        msg_Err( p_intf, "cannot convert to wanted encoding: %s",
                 psz_string );
    }
    else
    {
        psz_string = malloc( [o_data length] + 1 ); 
        [o_data getBytes: psz_string];
        psz_string[ [o_data length] ] = '\0';
    }

    return psz_string;
}

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/* i_width is in pixels */
- (NSString *)wrapString: (NSString *)o_in_string toWidth: (int) i_width
{
    NSMutableString *o_wrapped;
    NSString *o_out_string;
    NSRange glyphRange, effectiveRange, charRange;
    NSRect lineFragmentRect;
    unsigned glyphIndex, breaksInserted = 0;

    NSTextStorage *o_storage = [[NSTextStorage alloc] initWithString: o_in_string
        attributes: [NSDictionary dictionaryWithObjectsAndKeys:
        [NSFont labelFontOfSize: 0.0], NSFontAttributeName, nil]];
    NSLayoutManager *o_layout_manager = [[NSLayoutManager alloc] init];
    NSTextContainer *o_container = [[NSTextContainer alloc]
        initWithContainerSize: NSMakeSize(i_width, 2000)];
    
    [o_layout_manager addTextContainer: o_container];
    [o_container release];
    [o_storage addLayoutManager: o_layout_manager];
    [o_layout_manager release];
        
    o_wrapped = [o_in_string mutableCopy];
    glyphRange = [o_layout_manager glyphRangeForTextContainer: o_container];
    
    for( glyphIndex = glyphRange.location ; glyphIndex < NSMaxRange(glyphRange) ;
            glyphIndex += effectiveRange.length) {
        lineFragmentRect = [o_layout_manager lineFragmentRectForGlyphAtIndex: glyphIndex
                                            effectiveRange: &effectiveRange];
        charRange = [o_layout_manager characterRangeForGlyphRange: effectiveRange
                                    actualGlyphRange: &effectiveRange];
        if ([o_wrapped lineRangeForRange:
                NSMakeRange(charRange.location + breaksInserted, charRange.length)].length > charRange.length) {
            [o_wrapped insertString: @"\n" atIndex: NSMaxRange(charRange) + breaksInserted];
            breaksInserted++;
        }
    }
    o_out_string = [NSString stringWithString: o_wrapped];
    [o_wrapped release];
    [o_storage release];
    
    return o_out_string;
}

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- (void)setIntf:(intf_thread_t *)_p_intf
{
    p_intf = _p_intf;
}

- (intf_thread_t *)getIntf
{
    return( p_intf );
}

- (void)terminate:(id)sender
{
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    p_intf->p_vlc->b_die = VLC_TRUE;
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}

@end

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int ExecuteOnMainThread( id target, SEL sel, void * p_arg )
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{
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    int i_ret = 0;
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    NSAutoreleasePool * o_pool = [[NSAutoreleasePool alloc] init];

    if( [target respondsToSelector: @selector(performSelectorOnMainThread:
                                             withObject:waitUntilDone:)] )
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    {
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        [target performSelectorOnMainThread: sel
                withObject: [NSValue valueWithPointer: p_arg]
                waitUntilDone: YES];
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    }
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    else if( NSApp != nil && [NSApp respondsToSelector: @selector(getIntf)] ) 
    {
        NSValue * o_v1;
        NSValue * o_v2;
        NSArray * o_array;
        NSPort * o_recv_port;
        NSInvocation * o_inv;
        NSPortMessage * o_msg;
        intf_thread_t * p_intf;
        NSConditionLock * o_lock;
        NSMethodSignature * o_sig;

        id * val[] = { &o_lock, &o_v2 };

        p_intf = (intf_thread_t *)[NSApp getIntf];

        o_recv_port = [[NSPort port] retain];
        o_v1 = [NSValue valueWithPointer: val]; 
        o_v2 = [NSValue valueWithPointer: p_arg];

        o_sig = [target methodSignatureForSelector: sel];
        o_inv = [NSInvocation invocationWithMethodSignature: o_sig];
        [o_inv setArgument: &o_v1 atIndex: 2];
        [o_inv setTarget: target];
        [o_inv setSelector: sel];

        o_array = [NSArray arrayWithObject:
            [NSData dataWithBytes: &o_inv length: sizeof(o_inv)]];
        o_msg = [[NSPortMessage alloc]
            initWithSendPort: p_intf->p_sys->o_sendport
            receivePort: o_recv_port components: o_array];

        o_lock = [[NSConditionLock alloc] initWithCondition: 0];
        [o_msg sendBeforeDate: [NSDate distantPast]];
        [o_lock lockWhenCondition: 1];
        [o_lock unlock];
        [o_lock release];

        [o_msg release];
        [o_recv_port release];
    } 
    else
    {
        i_ret = 1;
    }

    [o_pool release];
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    return( i_ret );
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}

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/*****************************************************************************
 * playlistChanged: Callback triggered by the intf-change playlist
 * variable, to let the intf update the playlist.
 *****************************************************************************/
int PlaylistChanged( vlc_object_t *p_this, const char *psz_variable,
                     vlc_value_t old_val, vlc_value_t new_val, void *param )
{
    intf_thread_t * p_intf = [NSApp getIntf];
    p_intf->p_sys->b_playlist_update = VLC_TRUE;
    p_intf->p_sys->b_intf_update = VLC_TRUE;
    return VLC_SUCCESS;
}

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/*****************************************************************************
 * VLCMain implementation 
 *****************************************************************************/
@implementation VLCMain

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- (void)awakeFromNib
{
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    [o_window setTitle: _NS("VLC - Controller")];
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    [o_window setExcludedFromWindowsMenu: TRUE];
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    /* button controls */
    [o_btn_playlist setToolTip: _NS("Playlist")];
    [o_btn_prev setToolTip: _NS("Previous")];
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    [o_btn_slower setToolTip: _NS("Slower")];
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    [o_btn_play setToolTip: _NS("Play")];
    [o_btn_stop setToolTip: _NS("Stop")];
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    [o_btn_faster setToolTip: _NS("Faster")];
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    [o_btn_next setToolTip: _NS("Next")];
    [o_btn_prefs setToolTip: _NS("Preferences")];
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    [o_volumeslider setToolTip: _NS("Volume")];
    [o_timeslider setToolTip: _NS("Position")];
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    /* messages panel */ 
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    [o_msgs_panel setDelegate: self];
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    [o_msgs_panel setTitle: _NS("Messages")];
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    [o_msgs_panel setExcludedFromWindowsMenu: TRUE];
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    [o_msgs_btn_crashlog setTitle: _NS("Open CrashLog")];
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    /* main menu */
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    [o_mi_about setTitle: _NS("About VLC media player")];
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    [o_mi_prefs setTitle: _NS("Preferences...")];
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    [o_mi_hide setTitle: _NS("Hide VLC")];
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    [o_mi_hide_others setTitle: _NS("Hide Others")];
    [o_mi_show_all setTitle: _NS("Show All")];
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    [o_mi_quit setTitle: _NS("Quit VLC")];
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    [o_mu_file setTitle: _ANS("1:File")];
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    [o_mi_open_generic setTitle: _NS("Open...")];
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    [o_mi_open_file setTitle: _NS("Open File...")];
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    [o_mi_open_disc setTitle: _NS("Open Disc...")];
    [o_mi_open_net setTitle: _NS("Open Network...")];
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    [o_mi_open_recent setTitle: _NS("Open Recent")];
    [o_mi_open_recent_cm setTitle: _NS("Clear Menu")];

    [o_mu_edit setTitle: _NS("Edit")];
    [o_mi_cut setTitle: _NS("Cut")];
    [o_mi_copy setTitle: _NS("Copy")];
    [o_mi_paste setTitle: _NS("Paste")];
    [o_mi_clear setTitle: _NS("Clear")];
    [o_mi_select_all setTitle: _NS("Select All")];

    [o_mu_controls setTitle: _NS("Controls")];
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    [o_mi_play setTitle: _NS("Play")];
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    [o_mi_stop setTitle: _NS("Stop")];
    [o_mi_faster setTitle: _NS("Faster")];
    [o_mi_slower setTitle: _NS("Slower")];
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    [o_mi_previous setTitle: _NS("Previous")];
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    [o_mi_next setTitle: _NS("Next")];
    [o_mi_loop setTitle: _NS("Loop")];
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    [o_mi_fwd setTitle: _NS("Step Forward")];
    [o_mi_bwd setTitle: _NS("Step Backward")];
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    [o_mi_program setTitle: _NS("Program")];
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    [o_mu_program setTitle: _NS("Program")];
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    [o_mi_title setTitle: _NS("Title")];
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    [o_mu_title setTitle: _NS("Title")];
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    [o_mi_chapter setTitle: _NS("Chapter")];
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    [o_mu_chapter setTitle: _NS("Chapter")];
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    [o_mu_audio setTitle: _NS("Audio")];
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    [o_mi_vol_up setTitle: _NS("Volume Up")];
    [o_mi_vol_down setTitle: _NS("Volume Down")];
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    [o_mi_mute setTitle: _NS("Mute")];
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    [o_mi_audiotrack setTitle: _NS("Audio track")];
    [o_mu_audiotrack setTitle: _NS("Audio track")];
    [o_mi_channels setTitle: _NS("Audio channels")];
    [o_mu_channels setTitle: _NS("Audio channels")];
    [o_mi_device setTitle: _NS("Audio device")];
    [o_mu_device setTitle: _NS("Audio device")];
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    [o_mu_video setTitle: _NS("Video")];
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    [o_mi_half_window setTitle: _NS("Half Size")];
    [o_mi_normal_window setTitle: _NS("Normal Size")];
    [o_mi_double_window setTitle: _NS("Double Size")];
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    [o_mi_fittoscreen setTitle: _NS("Fit To Screen")];
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    [o_mi_fullscreen setTitle: _NS("Fullscreen")];
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    [o_mi_floatontop setTitle: _NS("Float On Top")];
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    [o_mi_videotrack setTitle: _NS("Video track")];
    [o_mu_videotrack setTitle: _NS("Video track")];
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    [o_mi_screen setTitle: _NS("Video device")];
    [o_mu_screen setTitle: _NS("Video device")];
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    [o_mi_subtitle setTitle: _NS("Subtitles track")];
    [o_mu_subtitle setTitle: _NS("Subtitles track")];
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    [o_mi_deinterlace setTitle: _NS("Deinterlace")];
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    [o_mu_deinterlace setTitle: _NS("Deinterlace")];
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    [o_mu_window setTitle: _NS("Window")];
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    [o_mi_minimize setTitle: _NS("Minimize Window")];
    [o_mi_close_window setTitle: _NS("Close Window")];
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    [o_mi_controller setTitle: _NS("Controller")];
    [o_mi_playlist setTitle: _NS("Playlist")];
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    [o_mi_info setTitle: _NS("Info")];
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    [o_mi_messages setTitle: _NS("Messages")];

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    [o_mi_bring_atf setTitle: _NS("Bring All to Front")];

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    [o_mu_help setTitle: _NS("Help")];
    [o_mi_readme setTitle: _NS("ReadMe...")];
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    [o_mi_documentation setTitle: _NS("Online Documentation")];
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    [o_mi_reportabug setTitle: _NS("Report a Bug")];
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    [o_mi_website setTitle: _NS("VideoLAN Website")];
    [o_mi_license setTitle: _NS("License")];

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    /* dock menu */
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    [o_dmi_play setTitle: _NS("Play")];
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    [o_dmi_stop setTitle: _NS("Stop")];
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    [o_dmi_next setTitle: _NS("Next")];
    [o_dmi_previous setTitle: _NS("Previous")];
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    /* error panel */
    [o_error setTitle: _NS("Error")];
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    [o_err_lbl setStringValue: _NS("An error has occurred which probably prevented the execution of your request:")];
    [o_err_bug_lbl setStringValue: _NS("If you believe that it is a bug, please follow the instructions at:")]; 
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    [o_err_btn_msgs setTitle: _NS("Open Messages Window")];
    [o_err_btn_dismiss setTitle: _NS("Dismiss")];

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    [o_info_window setTitle: _NS("Info")];

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    [self setSubmenusEnabled: FALSE];
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    [self manageVolumeSlider];
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}

- (void)applicationWillFinishLaunching:(NSNotification *)o_notification
{
    intf_thread_t * p_intf = [NSApp getIntf];

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    o_msg_lock = [[NSLock alloc] init];
    o_msg_arr = [[NSMutableArray arrayWithCapacity: 200] retain];

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    o_img_play = [[NSImage imageNamed: @"play"] retain];
    o_img_pause = [[NSImage imageNamed: @"pause"] retain];
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    [p_intf->p_sys->o_sendport setDelegate: self];
    [[NSRunLoop currentRunLoop] 
        addPort: p_intf->p_sys->o_sendport
        forMode: NSDefaultRunLoopMode];
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    [NSTimer scheduledTimerWithTimeInterval: 0.5
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        target: self selector: @selector(manageIntf:)
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        userInfo: nil repeats: FALSE];
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    [NSThread detachNewThreadSelector: @selector(manage)
        toTarget: self withObject: nil];
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    vlc_thread_set_priority( p_intf, VLC_THREAD_PRIORITY_LOW );
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}

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- (BOOL)application:(NSApplication *)o_app openFile:(NSString *)o_filename
{
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    NSDictionary *o_dic = [NSDictionary dictionaryWithObjectsAndKeys: o_filename, @"ITEM_URL", nil];
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    [o_playlist appendArray:
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        [NSArray arrayWithObject: o_dic] atPos: -1 enqueue: NO];
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    return( TRUE );
}

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- (id)getControls
{
    if ( o_controls )
    {
        return o_controls;
    }
    return nil;
}

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- (void)manage
{
    NSDate * o_sleep_date;
    intf_thread_t * p_intf = [NSApp getIntf];
    NSAutoreleasePool * o_pool = [[NSAutoreleasePool alloc] init];

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    vlc_thread_set_priority( p_intf, VLC_THREAD_PRIORITY_LOW );

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    while( !p_intf->b_die )
    {
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        playlist_t * p_playlist;
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        vlc_mutex_lock( &p_intf->change_lock );

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        p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST, 
                                              FIND_ANYWHERE );

        if( p_playlist != NULL )
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        {
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            var_AddCallback( p_playlist, "intf-change", PlaylistChanged, self );
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#define p_input p_playlist->p_input
        
            if( p_input )
            {
                if( !p_input->b_die )
                {
                    vlc_value_t val;

                    /* New input or stream map change */
                    if( p_input->stream.b_changed )
                    {
                        msg_Dbg( p_intf, "stream has changed, refreshing interface" );
                        p_intf->p_sys->b_playing = TRUE;
                        p_intf->p_sys->b_current_title_update = 1;
                        p_input->stream.b_changed = 0;
                        p_intf->p_sys->b_intf_update = TRUE;
                    }

                    if( var_Get( (vlc_object_t *)p_input, "intf-change", &val )
                        >= 0 && val.b_bool )
                    {
                        p_intf->p_sys->b_input_update = TRUE;
                    }
                }
            }
            else if( p_intf->p_sys->b_playing && !p_intf->b_die )
            {
                p_intf->p_sys->b_playing = FALSE;
                p_intf->p_sys->b_intf_update = TRUE;
            }
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#undef p_input
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            vlc_object_release( p_playlist );
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        }
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        vlc_mutex_unlock( &p_intf->change_lock );
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        o_sleep_date = [NSDate dateWithTimeIntervalSinceNow: .5];
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        [NSThread sleepUntilDate: o_sleep_date];
    }
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    [self terminate];
    [o_pool release];
}

- (void)manageIntf:(NSTimer *)o_timer
{
    intf_thread_t * p_intf = [NSApp getIntf];

    if( p_intf->p_vlc->b_die == VLC_TRUE )
    {
        [o_timer invalidate];
        return;
    }
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    playlist_t * p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
                                                       FIND_ANYWHERE );

    if( p_playlist == NULL )
    {
        return;
    }

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    if ( p_intf->p_sys->b_playlist_update )
    {
        [o_playlist playlistUpdated];
        p_intf->p_sys->b_playlist_update = VLC_FALSE;
    }
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    if( p_intf->p_sys->b_current_title_update )
    {
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        vout_thread_t   *p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
                                              FIND_ANYWHERE );
        if( p_vout != NULL )
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        {
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            id o_vout_wnd;
            NSEnumerator * o_enum = [[NSApp windows] objectEnumerator];
            
            while( ( o_vout_wnd = [o_enum nextObject] ) )
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            {
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                if( [[o_vout_wnd className] isEqualToString: @"VLCWindow"] )
                {
                    [o_vout_wnd updateTitle];
                }
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            }
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            vlc_object_release( (vlc_object_t *)p_vout );
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        }
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        [o_playlist updateRowSelection];
        [o_info updateInfo];

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        p_intf->p_sys->b_current_title_update = FALSE;
    }
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    vlc_mutex_lock( &p_playlist->object_lock );

#define p_input p_playlist->p_input

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    if( p_intf->p_sys->b_intf_update )
    {
        vlc_bool_t b_input = VLC_FALSE;
        vlc_bool_t b_plmul = VLC_FALSE;
        vlc_bool_t b_control = VLC_FALSE;
        vlc_bool_t b_seekable = VLC_FALSE;
        vlc_bool_t b_chapters = VLC_FALSE;
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        vlc_value_t val;
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        b_plmul = p_playlist->i_size > 1;

        if( ( b_input = ( p_input != NULL ) ) )
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        {
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            vlc_mutex_lock( &p_input->stream.stream_lock );

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            /* seekable streams */
            b_seekable = p_input->stream.b_seekable;
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            /* control buttons for free pace streams */
            b_control = p_input->stream.b_pace_control; 
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            /* chapters & titles */
            b_chapters = p_input->stream.i_area_nb > 1; 
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            vlc_mutex_unlock( &p_input->stream.stream_lock );
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            /* play status */
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            var_Get( p_input, "state", &val );
            p_intf->p_sys->b_play_status = val.i_int != PAUSE_S;
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        }
        else
        {
            /* play status */
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            p_intf->p_sys->b_play_status = FALSE;
            [self setSubmenusEnabled: FALSE];
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        }

        [self playStatusUpdated: p_intf->p_sys->b_play_status];

        [o_btn_stop setEnabled: b_input];
        [o_btn_faster setEnabled: b_control];
        [o_btn_slower setEnabled: b_control];
        [o_btn_prev setEnabled: (b_plmul || b_chapters)];
        [o_btn_next setEnabled: (b_plmul || b_chapters)];

        [o_timeslider setFloatValue: 0.0];
        [o_timeslider setEnabled: b_seekable];
        [o_timefield setStringValue: @"0:00:00"];

        [self manageVolumeSlider];

        p_intf->p_sys->b_intf_update = VLC_FALSE;
    }

    if( p_intf->p_sys->b_playing && p_input != NULL )
    {
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        vlc_value_t time, val;
        NSString * o_time;
        mtime_t i_seconds;
        var_Get( p_input, "state", &val );

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        if( !p_input->b_die && ( p_intf->p_sys->b_play_status !=
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            ( val.i_int != PAUSE_S ) ) ) 
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        {
            p_intf->p_sys->b_play_status =
                !p_intf->p_sys->b_play_status;
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            [self playStatusUpdated: p_intf->p_sys->b_play_status]; 
        }

        if( p_input->stream.b_seekable )
        {
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            vlc_value_t pos;
            float f_updated;
            
            var_Get( p_input, "position", &pos );
            f_updated = 10000. * pos.f_float;
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            if( f_slider != f_updated )
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            {
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                [o_timeslider setFloatValue: f_updated];
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            }
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        }
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        var_Get( p_input, "time", &time );
        i_seconds = time.i_time / 1000000;
        
        o_time = [NSString stringWithFormat: @"%d:%02d:%02d",
                        (int) (i_seconds / (60 * 60)),
                        (int) (i_seconds / 60 % 60),
                        (int) (i_seconds % 60)];
        [o_timefield setStringValue: o_time];
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        /* disable screen saver */
        UpdateSystemActivity( UsrActivity );
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    }

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#undef p_input

    vlc_mutex_unlock( &p_playlist->object_lock );
    vlc_object_release( p_playlist );

    [self updateMessageArray];
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    [NSTimer scheduledTimerWithTimeInterval: 0.5
        target: self selector: @selector(manageIntf:)
        userInfo: nil repeats: FALSE];
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}

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- (void)setupMenus
{
    intf_thread_t * p_intf = [NSApp getIntf];
    playlist_t *p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST, 
                                                FIND_ANYWHERE );
    
    if( p_playlist != NULL )
    {
#define p_input p_playlist->p_input
        if( p_input != NULL )
        {
            [o_controls setupVarMenuItem: o_mi_program target: (vlc_object_t *)p_input
                var: "program" selector: @selector(toggleVar:)];
            
            [o_controls setupVarMenuItem: o_mi_title target: (vlc_object_t *)p_input
                var: "title" selector: @selector(toggleVar:)];
            
            [o_controls setupVarMenuItem: o_mi_chapter target: (vlc_object_t *)p_input
                var: "chapter" selector: @selector(toggleVar:)];
            
            [o_controls setupVarMenuItem: o_mi_audiotrack target: (vlc_object_t *)p_input
                var: "audio-es" selector: @selector(toggleVar:)];
            
            [o_controls setupVarMenuItem: o_mi_videotrack target: (vlc_object_t *)p_input
                var: "video-es" selector: @selector(toggleVar:)];
            
            [o_controls setupVarMenuItem: o_mi_subtitle target: (vlc_object_t *)p_input
                var: "spu-es" selector: @selector(toggleVar:)];
        
            aout_instance_t * p_aout = vlc_object_find( p_intf, VLC_OBJECT_AOUT,
                                                        FIND_ANYWHERE );
            if ( p_aout != NULL )
            {
                [o_controls setupVarMenuItem: o_mi_channels target: (vlc_object_t *)p_aout
                    var: "audio-channels" selector: @selector(toggleVar:)];
            
                [o_controls setupVarMenuItem: o_mi_device target: (vlc_object_t *)p_aout
                    var: "audio-device" selector: @selector(toggleVar:)];
                vlc_object_release( (vlc_object_t *)p_aout );
            }
            
            vout_thread_t * p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT,
                                                                FIND_ANYWHERE );
            
            if ( p_vout != NULL )
            {
                [o_controls setupVarMenuItem: o_mi_screen target: (vlc_object_t *)p_vout
                    var: "video-device" selector: @selector(toggleVar:)];
                
                [o_controls setupVarMenuItem: o_mi_deinterlace target: (vlc_object_t *)p_vout
                    var: "deinterlace" selector: @selector(toggleVar:)];
                vlc_object_release( (vlc_object_t *)p_vout );
            }
        }
#undef p_input
    }
    vlc_object_release( (vlc_object_t *)p_playlist );
}

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- (void)updateMessageArray
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{
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    int i_start, i_stop;
    intf_thread_t * p_intf = [NSApp getIntf];

    vlc_mutex_lock( p_intf->p_sys->p_sub->p_lock );
    i_stop = *p_intf->p_sys->p_sub->pi_stop;
    vlc_mutex_unlock( p_intf->p_sys->p_sub->p_lock );

    if( p_intf->p_sys->p_sub->i_start != i_stop )
    {
        NSColor *o_white = [NSColor whiteColor];
        NSColor *o_red = [NSColor redColor];
        NSColor *o_yellow = [NSColor yellowColor];
        NSColor *o_gray = [NSColor grayColor];

        NSColor * pp_color[4] = { o_white, o_red, o_yellow, o_gray };
        static const char * ppsz_type[4] = { ": ", " error: ",
                                             " warning: ", " debug: " };

        for( i_start = p_intf->p_sys->p_sub->i_start;
             i_start != i_stop;
             i_start = (i_start+1) % VLC_MSG_QSIZE )
        {
            NSString *o_msg;
            NSDictionary *o_attr;
            NSAttributedString *o_msg_color;

            int i_type = p_intf->p_sys->p_sub->p_msg[i_start].i_type;

            [o_msg_lock lock];

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            if( [o_msg_arr count] + 2 > 400 )
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            {
                unsigned rid[] = { 0, 1 };
                [o_msg_arr removeObjectsFromIndices: (unsigned *)&rid
                           numIndices: sizeof(rid)/sizeof(rid[0])];
            }

            o_attr = [NSDictionary dictionaryWithObject: o_gray
                forKey: NSForegroundColorAttributeName];
            o_msg = [NSString stringWithFormat: @"%s%s",
                p_intf->p_sys->p_sub->p_msg[i_start].psz_module,
                ppsz_type[i_type]];
            o_msg_color = [[NSAttributedString alloc]
                initWithString: o_msg attributes: o_attr];
            [o_msg_arr addObject: [o_msg_color autorelease]];

            o_attr = [NSDictionary dictionaryWithObject: pp_color[i_type]
                forKey: NSForegroundColorAttributeName];
            o_msg = [NSString stringWithFormat: @"%s\n",
                p_intf->p_sys->p_sub->p_msg[i_start].psz_msg];
            o_msg_color = [[NSAttributedString alloc]
                initWithString: o_msg attributes: o_attr];
            [o_msg_arr addObject: [o_msg_color autorelease]];

            [o_msg_lock unlock];

            if( i_type == 1 )
            {
                NSString *o_my_msg = [NSString stringWithFormat: @"%s: %s\n",
                    p_intf->p_sys->p_sub->p_msg[i_start].psz_module,
                    p_intf->p_sys->p_sub->p_msg[i_start].psz_msg];

                NSRange s_r = NSMakeRange( [[o_err_msg string] length], 0 );
                [o_err_msg setEditable: YES];
                [o_err_msg setSelectedRange: s_r];
                [o_err_msg insertText: o_my_msg];

                [o_error makeKeyAndOrderFront: self];
                [o_err_msg setEditable: NO];
            }
        }

        vlc_mutex_lock( p_intf->p_sys->p_sub->p_lock );
        p_intf->p_sys->p_sub->i_start = i_start;
        vlc_mutex_unlock( p_intf->p_sys->p_sub->p_lock );
    }
}

- (void)playStatusUpdated:(BOOL)b_pause
{
    if( b_pause )
    {
        [o_btn_play setImage: o_img_pause];
        [o_btn_play setToolTip: _NS("Pause")];
        [o_mi_play setTitle: _NS("Pause")];
        [o_dmi_play setTitle: _NS("Pause")];
    }
    else
    {
        [o_btn_play setImage: o_img_play];
        [o_btn_play setToolTip: _NS("Play")];
        [o_mi_play setTitle: _NS("Play")];
        [o_dmi_play setTitle: _NS("Play")];
    }
}

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- (void)setSubmenusEnabled:(BOOL)b_enabled
{
    [o_mi_program setEnabled: b_enabled];
    [o_mi_title setEnabled: b_enabled];
    [o_mi_chapter setEnabled: b_enabled];
    [o_mi_audiotrack setEnabled: b_enabled];
    [o_mi_videotrack setEnabled: b_enabled];
    [o_mi_subtitle setEnabled: b_enabled];
    [o_mi_channels setEnabled: b_enabled];
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    [o_mi_deinterlace setEnabled: b_enabled];
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    [o_mi_device setEnabled: b_enabled];
    [o_mi_screen setEnabled: b_enabled];
}

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- (void)manageVolumeSlider
{
    audio_volume_t i_volume;
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    intf_thread_t * p_intf = [NSApp getIntf];

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    aout_VolumeGet( p_intf, &i_volume );
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    [o_volumeslider setFloatValue: (float)i_volume / AOUT_VOLUME_STEP]; 
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    [o_volumeslider setEnabled: TRUE];
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    p_intf->p_sys->b_mute = ( i_volume == 0 );
}

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- (IBAction)timesliderUpdate:(id)sender
{
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    intf_thread_t * p_intf;
    input_thread_t * p_input;
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    float f_updated;

    switch( [[NSApp currentEvent] type] )
    {
        case NSLeftMouseUp:
        case NSLeftMouseDown:
        case NSLeftMouseDragged:
            f_updated = [sender floatValue];
            break;

        default:
            return;
    }

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    p_intf = [NSApp getIntf];
    p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT,
                                            FIND_ANYWHERE );
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    if( p_input != NULL )
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    {
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        vlc_value_t time;
        mtime_t i_seconds;
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        NSString * o_time;

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        if( p_input->stream.b_seekable )
        {
                vlc_value_t pos;
                pos.f_float = f_updated / 10000.;
                if( f_slider != f_updated )
                {
                    var_Set( p_input, "position", pos );
                    [o_timeslider setFloatValue: f_updated];
                }
        }
            
        var_Get( p_input, "time", &time );
        i_seconds = time.i_time / 1000000;
        
        o_time = [NSString stringWithFormat: @"%d:%02d:%02d",
                        (int) (i_seconds / (60 * 60)),
                        (int) (i_seconds / 60 % 60),
                        (int) (i_seconds % 60)];
        [o_timefield setStringValue: o_time];
        vlc_object_release( p_input );
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    }
}

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- (void)terminate
{
    NSEvent * o_event;
    playlist_t * p_playlist;
    intf_thread_t * p_intf = [NSApp getIntf];

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    /*
     * Free playlists
     */
    msg_Dbg( p_intf, "removing all playlists" );
    while( (p_playlist = vlc_object_find( p_intf->p_vlc, VLC_OBJECT_PLAYLIST,
                                          FIND_CHILD )) )
    {
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        vlc_object_detach( p_playlist );
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        vlc_object_release( p_playlist );
        playlist_Destroy( p_playlist );
    }

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    if( o_img_pause != nil )
    {
        [o_img_pause release];
        o_img_pause = nil;
    }

    if( o_img_play != nil )
    {
        [o_img_play release];
        o_img_play = nil;
    }

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    if( o_msg_arr != nil )
    {
        [o_msg_arr removeAllObjects];
        [o_msg_arr release];
        o_msg_arr = nil;
    }

    if( o_msg_lock != nil )
    {
        [o_msg_lock release];
        o_msg_lock = nil;
    }

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    [NSApp stop: nil];

    /* write cached user defaults to disk */
    [[NSUserDefaults standardUserDefaults] synchronize];

    /* send a dummy event to break out of the event loop */
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    o_event = [NSEvent mouseEventWithType: NSLeftMouseDown
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                location: NSMakePoint( 1, 1 ) modifierFlags: 0
                timestamp: 1 windowNumber: [[NSApp mainWindow] windowNumber]
                context: [NSGraphicsContext currentContext] eventNumber: 1
                clickCount: 1 pressure: 0.0];
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    [NSApp postEvent: o_event atStart: YES];
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}
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- (IBAction)clearRecentItems:(id)sender
{
    [[NSDocumentController sharedDocumentController]
                          clearRecentDocuments: nil];
}

- (void)openRecentItem:(id)sender
{
    [self application: nil openFile: [sender title]]; 
}

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- (IBAction)viewPreferences:(id)sender
{
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    [o_prefs showPrefs];
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}

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- (IBAction)closeError:(id)sender
{
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    [o_err_msg setString: @""];
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    [o_error performClose: self];
}

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- (IBAction)openReadMe:(id)sender
{
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    NSString * o_path = [[NSBundle mainBundle] 
        pathForResource: @"README.MacOSX" ofType: @"rtf"]; 
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    [[NSWorkspace sharedWorkspace] openFile: o_path 
                                   withApplication: @"TextEdit"];
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}

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- (IBAction)openDocumentation:(id)sender
{
    NSURL * o_url = [NSURL URLWithString: 
        @"http://www.videolan.org/doc/"];

    [[NSWorkspace sharedWorkspace] openURL: o_url];
}

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- (IBAction)reportABug:(id)sender
{
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    NSURL * o_url = [NSURL URLWithString: 
        @"http://www.videolan.org/support/bug-reporting.html"];
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    [[NSWorkspace sharedWorkspace] openURL: o_url];
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}

- (IBAction)openWebsite:(id)sender
{
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    NSURL * o_url = [NSURL URLWithString: @"http://www.videolan.org"];
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    [[NSWorkspace sharedWorkspace] openURL: o_url];
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}

- (IBAction)openLicense:(id)sender
{
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    NSString * o_path = [[NSBundle mainBundle] 
        pathForResource: @"COPYING" ofType: nil];
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    [[NSWorkspace sharedWorkspace] openFile: o_path 
                                   withApplication: @"TextEdit"];
}

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- (IBAction)openCrashLog:(id)sender
{
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    NSString * o_path = [@"~/Library/Logs/CrashReporter/VLC.crash.log"
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                                    stringByExpandingTildeInPath]; 

    
    if ( [[NSFileManager defaultManager] fileExistsAtPath: o_path ] )
    {
        [[NSWorkspace sharedWorkspace] openFile: o_path 
                                    withApplication: @"Console"];
    }
    else
    {
        NSBeginInformationalAlertSheet(_NS("No CrashLog found"), @"Continue", nil, nil, o_msgs_panel, self, NULL, NULL, nil, _NS("Either you are running Mac OS X pre 10.2 or you haven't experienced any heavy crashes yet.") );

    }
}

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- (void)windowDidBecomeKey:(NSNotification *)o_notification
{
    if( [o_notification object] == o_msgs_panel )
    {
        id o_msg;
        NSEnumerator * o_enum;

        [o_messages setString: @""]; 

        [o_msg_lock lock];

        o_enum = [o_msg_arr objectEnumerator];

        while( ( o_msg = [o_enum nextObject] ) != nil )
        {
            [o_messages insertText: o_msg];
        }

        [o_msg_lock unlock];
    }
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}

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@end

@implementation VLCMain (NSMenuValidation)

- (BOOL)validateMenuItem:(NSMenuItem *)o_mi
{
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    NSString *o_title = [o_mi title];
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    BOOL bEnabled = TRUE;

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    if( [o_title isEqualToString: _NS("License")] )
    {
        /* we need to do this only once */
        [self setupMenus];
    }
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    /* Recent Items Menu */
    if( [o_title isEqualToString: _NS("Clear Menu")] )