git.sesse.net Git - vlc/blob - modules/gui/macosx/prefs.m

   1 /*****************************************************************************
   2  * prefs.m: MacOS X module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2002-2005 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
   8  *          Derk-Jan Hartman <hartman at videolan dot org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /* VLCPrefs manages the main preferences dialog
  26    the class is related to wxwindows intf, PrefsPanel */
  27 /* VLCTreeItem should contain:
  28    - the children of the treeitem
  29    - the associated prefs widgets
  30    - the documentview with all the prefs widgets in it
  31    - a saveChanges action
  32    - a revertChanges action
  33    - an advanced action (to hide/show advanced options)
  34    - a redraw view action
  35    - the children action should generate a list of the treeitems children (to be used by VLCPrefs datasource)
  36
  37    The class is sort of a mix of wxwindows intfs, PrefsTreeCtrl and ConfigTreeData
  38 */
  39 /* VLCConfigControl are subclassed NSView's containing and managing individual config items
  40    the classes are VERY closely related to wxwindows ConfigControls */
  41
  42 /*****************************************************************************
  43  * Preamble
  44  *****************************************************************************/
  45 #include <stdlib.h>                                      /* malloc(), free() */
  46 #include <sys/param.h>                                    /* for MAXPATHLEN */
  47 #include <string.h>
  48
  49 #include <vlc/vlc.h>
  50 #include <vlc_config_cat.h>
  51
  52 #include "intf.h"
  53 #include "prefs.h"
  54 #include "prefs_widgets.h"
  55 #include "vlc_keys.h"
  56
  57 /*****************************************************************************
  58  * VLCPrefs implementation
  59  *****************************************************************************/
  60 @implementation VLCPrefs
  61
  62 static VLCPrefs *_o_sharedMainInstance = nil;
  63
  64 + (VLCPrefs *)sharedInstance
  65 {
  66     return _o_sharedMainInstance ? _o_sharedMainInstance : [[self alloc] init];
  67 }
  68
  69 - (id)init
  70 {
  71     if( _o_sharedMainInstance ) {
  72         [self dealloc];
  73     }
  74     else
  75     {
  76         _o_sharedMainInstance = [super init];
  77         p_intf = VLCIntf;
  78         o_empty_view = [[NSView alloc] init];
  79     }
  80
  81     return _o_sharedMainInstance;
  82 }
  83
  84 - (void)dealloc
  85 {
  86     [o_empty_view release];
  87     [super dealloc];
  88 }
  89
  90 - (void)awakeFromNib
  91 {
  92     p_intf = VLCIntf;
  93     b_advanced = config_GetInt( p_intf, "advanced" );
  94
  95     [self initStrings];
  96     [o_advanced_ckb setState: b_advanced];
  97     [o_prefs_view setBorderType: NSGrooveBorder];
  98     [o_prefs_view setHasVerticalScroller: YES];
  99     [o_prefs_view setDrawsBackground: NO];
 100     [o_prefs_view setDocumentView: o_empty_view];
 101     [o_tree selectRow:0 byExtendingSelection:NO];
 102 }
 103
 104 - (void)showPrefs
 105 {
 106     /* load our nib (if not already loaded) */
 107     [NSBundle loadNibNamed:@"Preferences" owner:self];
 108
 109     [o_prefs_window center];
 110     [o_prefs_window makeKeyAndOrderFront:self];
 111 }
 112
 113 - (void)initStrings
 114 {
 115     [o_prefs_window setTitle: _NS("Preferences")];
 116     [o_save_btn setTitle: _NS("Save")];
 117     [o_cancel_btn setTitle: _NS("Cancel")];
 118     [o_reset_btn setTitle: _NS("Reset All")];
 119     [o_advanced_ckb setTitle: _NS("Advanced")];
 120 }
 121
 122 - (IBAction)savePrefs: (id)sender
 123 {
 124     /* TODO: call savePrefs on Root item */
 125     [[VLCTreeItem rootItem] applyChanges];
 126     config_SaveConfigFile( p_intf, NULL );
 127     [o_prefs_window orderOut:self];
 128 }
 129
 130 - (IBAction)closePrefs: (id)sender
 131 {
 132     [o_prefs_window orderOut:self];
 133 }
 134
 135 - (IBAction)resetAll: (id)sender
 136 {
 137     NSBeginInformationalAlertSheet(_NS("Reset Preferences"), _NS("Cancel"),
 138         _NS("Continue"), nil, o_prefs_window, self,
 139         @selector(sheetDidEnd: returnCode: contextInfo:), NULL, nil,
 140         _NS("Beware this will reset your VLC media player preferences.\n"
 141             "Are you sure you want to continue?") );
 142 }
 143
 144 - (void)sheetDidEnd:(NSWindow *)o_sheet returnCode:(int)i_return
 145     contextInfo:(void *)o_context
 146 {
 147     if( i_return == NSAlertAlternateReturn )
 148     {
 149         config_ResetAll( p_intf );
 150         [[o_tree itemAtRow:[o_tree selectedRow]]
 151             showView:o_prefs_view advancedView:
 152             ( [o_advanced_ckb state] == NSOnState ) ? VLC_TRUE : VLC_FALSE];
 153     }
 154 }
 155
 156 - (IBAction)advancedToggle: (id)sender
 157 {
 158     b_advanced = !b_advanced;
 159     [o_advanced_ckb setState: b_advanced];
 160     /* refresh the view of the current treeitem */
 161     [[o_tree itemAtRow:[o_tree selectedRow]] showView:o_prefs_view advancedView:
 162         ( [o_advanced_ckb state] == NSOnState ) ? VLC_TRUE : VLC_FALSE];
 163 }
 164
 165 - (void)loadConfigTree
 166 {
 167 }
 168
 169 - (void)outlineViewSelectionIsChanging:(NSNotification *)o_notification
 170 {
 171 }
 172
 173 /* update the document view to the view of the selected tree item */
 174 - (void)outlineViewSelectionDidChange:(NSNotification *)o_notification
 175 {
 176     [[o_tree itemAtRow:[o_tree selectedRow]] showView: o_prefs_view
 177         advancedView:( [o_advanced_ckb state] == NSOnState ) ?
 178         VLC_TRUE : VLC_FALSE];
 179 }
 180
 181 @end
 182
 183 @implementation VLCPrefs (NSTableDataSource)
 184
 185 - (int)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item {
 186     return (item == nil) ? [[VLCTreeItem rootItem] numberOfChildren] :
 187                             [item numberOfChildren];
 188 }
 189
 190 - (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item
 191 {
 192     return (item == nil) ? YES : ( ([item numberOfChildren] != -1) &&
 193                                    ([item numberOfChildren] != 0));
 194 }
 195
 196 - (id)outlineView:(NSOutlineView *)outlineView child:(int)index ofItem:(id)item {
 197     return (item == nil) ? [[VLCTreeItem rootItem] childAtIndex:index] :
 198                             [item childAtIndex:index];
 199 }
 200
 201 - (id)outlineView:(NSOutlineView *)outlineView
 202     objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
 203 {
 204     return (item == nil) ? @"" : (id)[item getName];
 205 }
 206
 207 @end
 208
 209 @implementation VLCTreeItem
 210
 211 static VLCTreeItem *o_root_item = nil;
 212
 213 #define IsALeafNode ((id)-1)
 214
 215 - (id)initWithName: (NSString *)o_item_name ID: (int)i_id
 216     parent:(VLCTreeItem *)o_parent_item
 217     children:(NSMutableArray *)o_children_array
 218     whithCategory: (int) i_category
 219 {
 220     self = [super init];
 221
 222     if( self != nil )
 223     {
 224         o_name = [o_item_name copy];
 225         i_object_id = i_id;
 226         o_parent = o_parent_item;
 227         o_children = o_children_array;
 228         i_object_category = i_category;
 229         o_subviews = nil;
 230     }
 231     return( self );
 232 }
 233
 234 + (VLCTreeItem *)rootItem
 235 {
 236    if (o_root_item == nil)
 237         o_root_item = [[VLCTreeItem alloc] initWithName:@"main" ID:0
 238             parent:nil children:[[NSMutableArray alloc] initWithCapacity:10]
 239             whithCategory: -1];
 240    return o_root_item;
 241 }
 242
 243 - (void)dealloc
 244 {
 245     if (o_children != IsALeafNode) [o_children release];
 246     [o_name release];
 247     [super dealloc];
 248 }
 249
 250 /* Creates and returns the array of children
 251  * Loads children incrementally */
 252 - (NSArray *)children
 253 {
 254     if( o_children == IsALeafNode )
 255         return o_children;
 256     if( [ o_children count] == 0 )
 257     {
 258         intf_thread_t   *p_intf = VLCIntf;
 259         vlc_list_t      *p_list;
 260         module_t        *p_module = NULL;
 261         module_config_t *p_item;
 262         int             i_index;
 263
 264         /* List the modules */
 265         p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
 266         if( !p_list ) return nil;
 267
 268         if( [[self getName] isEqualToString: @"main"] )
 269         {
 270             /*
 271             * Find the main module
 272             */
 273             for( i_index = 0; i_index < p_list->i_count; i_index++ )
 274             {
 275                 p_module = (module_t *)p_list->p_values[i_index].p_object;
 276                 if( !strcmp( p_module->psz_object_name, "main" ) )
 277                     break;
 278             }
 279             if( p_module == NULL )
 280             {
 281                 msg_Err( p_intf,
 282                     "could not find the main module in our preferences" );
 283                 return nil;
 284             }
 285             if( i_index < p_list->i_count )
 286             {
 287                 /* We found the main module */
 288                 /* Enumerate config categories and store a reference so we can
 289                  * generate their config panel them when it is asked by the user. */
 290                 VLCTreeItem *p_last_category = NULL;
 291                 p_item = p_module->p_config;
 292                 o_children = [[NSMutableArray alloc] initWithCapacity:10];
 293                 if( p_item ) do
 294                 {
 295                     NSString *o_child_name;
 296                     switch( p_item->i_type )
 297                     {
 298                     case CONFIG_CATEGORY:
 299                         o_child_name = [[VLCMain sharedInstance]
 300     localizedString: config_CategoryNameGet(p_item->i_value ) ];
 301                         p_last_category = [VLCTreeItem alloc];
 302                         [o_children addObject:[p_last_category
 303                             initWithName: o_child_name
 304                             ID: p_item->i_value
 305                             parent:self
 306                             children:[[NSMutableArray alloc]
 307                                 initWithCapacity:10]
 308                             whithCategory: p_item - p_module->p_config]];
 309                         break;
 310                     case CONFIG_SUBCATEGORY:
 311                         o_child_name = [[VLCMain sharedInstance]
 312     localizedString: config_CategoryNameGet(p_item->i_value ) ];
 313                         if( p_item->i_value != SUBCAT_VIDEO_GENERAL &&
 314                             p_item->i_value != SUBCAT_AUDIO_GENERAL )
 315                             [p_last_category->o_children
 316                                 addObject:[[VLCTreeItem alloc]
 317                                 initWithName: o_child_name
 318                                 ID: p_item->i_value
 319                                 parent:p_last_category
 320                                 children:[[NSMutableArray alloc]
 321                                     initWithCapacity:10]
 322                                 whithCategory: p_item - p_module->p_config]];
 323                         break;
 324                     default:
 325                         break;
 326                     }
 327                 } while( p_item->i_type != CONFIG_HINT_END && p_item++ );
 328             }
 329
 330             /* Build a tree of the plugins */
 331             /* Add the capabilities */
 332             for( i_index = 0; i_index < p_list->i_count; i_index++ )
 333             {
 334                 p_module = (module_t *)p_list->p_values[i_index].p_object;
 335
 336                 /* Exclude the main module */
 337                 if( !strcmp( p_module->psz_object_name, "main" ) )
 338                     continue;
 339
 340                 /* Exclude empty plugins (submodules don't have config */
 341                 /* options, they are stored in the parent module) */
 342                 if( p_module->b_submodule )
 343                     continue;
 344                 else
 345                     p_item = p_module->p_config;
 346
 347                 if( !p_item ) continue;
 348                 int i_category = -1;
 349                 int i_subcategory = -1;
 350                 int i_options = 0;
 351                 do
 352                 {
 353                     if( p_item->i_type == CONFIG_CATEGORY )
 354                         i_category = p_item->i_value;
 355                     else if( p_item->i_type == CONFIG_SUBCATEGORY )
 356                         i_subcategory = p_item->i_value;
 357
 358                     if( p_item->i_type & CONFIG_ITEM )
 359                         i_options ++;
 360                     if( i_options > 0 && i_category >= 0 && i_subcategory >= 0 )
 361                         break;
 362                 } while( p_item->i_type != CONFIG_HINT_END && p_item++ );
 363                 if( !i_options ) continue;
 364
 365                 /* Find the right category item */
 366
 367                 long cookie;
 368                 vlc_bool_t b_found = VLC_FALSE;
 369                 unsigned int i;
 370                 VLCTreeItem* p_category_item, * p_subcategory_item;
 371                 for (i = 0 ; i < [o_children count] ; i++)
 372                 {
 373                     p_category_item = [o_children objectAtIndex: i];
 374                     if( p_category_item->i_object_id == i_category )
 375                     {
 376                         b_found = VLC_TRUE;
 377                         break;
 378                     }
 379                 }
 380                 if( !b_found ) continue;
 381
 382                 /* Find subcategory item */
 383                 b_found = VLC_FALSE;
 384                 cookie = -1;
 385                 for (i = 0 ; i < [p_category_item->o_children count] ; i++)
 386                 {
 387                     p_subcategory_item = [p_category_item->o_children
 388                                             objectAtIndex: i];
 389                     if( p_subcategory_item->i_object_id == i_subcategory )
 390                     {
 391                         b_found = VLC_TRUE;
 392                         break;
 393                     }
 394                 }
 395                 if( !b_found )
 396                     p_subcategory_item = p_category_item;
 397
 398                 [p_subcategory_item->o_children addObject:[[VLCTreeItem alloc]
 399                     initWithName:[[VLCMain sharedInstance]
 400                         localizedString: p_module->psz_object_name ]
 401                     ID: p_module->i_object_id
 402                     parent:p_subcategory_item
 403                     children:IsALeafNode
 404                     whithCategory: -1]];
 405             }
 406         }
 407         vlc_list_release( p_list );
 408     }
 409     return o_children;
 410 }
 411
 412 - (int)getObjectID
 413 {
 414     return i_object_id;
 415 }
 416
 417 - (NSString *)getName
 418 {
 419     return o_name;
 420 }
 421
 422 - (VLCTreeItem *)childAtIndex:(int)i_index
 423 {
 424     return [[self children] objectAtIndex:i_index];
 425 }
 426
 427 - (int)numberOfChildren {
 428     id i_tmp = [self children];
 429     return (i_tmp == IsALeafNode) ? (-1) : (int)[i_tmp count];
 430 }
 431
 432 - (BOOL)hasPrefs:(NSString *)o_module_name
 433 {
 434     intf_thread_t *p_intf = VLCIntf;
 435     module_t *p_parser;
 436     vlc_list_t *p_list;
 437     char *psz_module_name;
 438     int i_index;
 439
 440     psz_module_name = (char *)[o_module_name UTF8String];
 441
 442     /* look for module */
 443     p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
 444
 445     for( i_index = 0; i_index < p_list->i_count; i_index++ )
 446     {
 447         p_parser = (module_t *)p_list->p_values[i_index].p_object ;
 448
 449         if( !strcmp( p_parser->psz_object_name, psz_module_name ) )
 450         {
 451             BOOL b_has_prefs = p_parser->i_config_items != 0;
 452             vlc_list_release( p_list );
 453             return( b_has_prefs );
 454         }
 455     }
 456
 457     vlc_list_release( p_list );
 458
 459     return( NO );
 460 }
 461
 462 - (NSView *)showView:(NSScrollView *)o_prefs_view
 463     advancedView:(vlc_bool_t) b_advanced
 464 {
 465 fprintf( stderr, "[%s] showView\n", [o_name UTF8String] );
 466     NSRect          s_vrc;
 467     NSView          *o_view;
 468
 469     s_vrc = [[o_prefs_view contentView] bounds]; s_vrc.size.height -= 4;
 470     o_view = [[VLCFlippedView alloc] initWithFrame: s_vrc];
 471     [o_view setAutoresizingMask: NSViewWidthSizable | NSViewMinYMargin |
 472                                     NSViewMaxYMargin];
 473
 474 /* Create all subviews if it isn't already done because we cannot use */
 475 /* setHiden for MacOS < 10.3*/
 476     if( o_subviews == nil )
 477     {
 478         intf_thread_t   *p_intf = VLCIntf;
 479         vlc_list_t      *p_list;
 480         module_t        *p_parser = NULL;
 481         module_config_t *p_item;
 482
 483         o_subviews = [[NSMutableArray alloc] initWithCapacity:10];
 484         /* Get a pointer to the module */
 485         if( i_object_category == -1 )
 486         {
 487             p_parser = (module_t *) vlc_object_get( p_intf, i_object_id );
 488             if( !p_parser || p_parser->i_object_type != VLC_OBJECT_MODULE )
 489             {
 490                 /* 0OOoo something went really bad */
 491                 return nil;
 492             }
 493             p_item = p_parser->p_config;
 494             int i = 0;
 495
 496             p_item = p_parser->p_config + 1;
 497
 498             do
 499             {
 500                 if( !p_item )
 501                 {
 502                     msg_Err( p_intf, "null item found" );
 503                     break;
 504                 }
 505                 switch(p_item->i_type)
 506                 {
 507                 case CONFIG_SUBCATEGORY:
 508 fprintf( stderr, "drawing subcategory %s\n", [o_name UTF8String] );
 509                     break;
 510                 case CONFIG_SECTION:
 511 fprintf( stderr, "drawing section %s\n", p_item->psz_text );
 512                     break;
 513                 case CONFIG_CATEGORY:
 514 fprintf( stderr, "drawing category %s\n", [o_name UTF8String] );
 515                     break;
 516                 case CONFIG_HINT_END:
 517 fprintf( stderr, "end of (sub)category\n" );
 518                     break;
 519                 case CONFIG_HINT_USAGE:
 520 fprintf( stderr, "skipping hint usage\n" );
 521                     break;
 522                 default:
 523 fprintf( stderr, "%s (%d)", p_item->psz_name, p_item->i_type );
 524                 {
 525                     VLCConfigControl *o_control = nil;
 526                     o_control = [VLCConfigControl newControl:p_item
 527                                                   withView:o_view];
 528                     if( o_control != nil )
 529                     {
 530                         [o_control setAutoresizingMask: NSViewMaxYMargin |
 531                             NSViewWidthSizable];
 532                         [o_subviews addObject: o_control];
 533                     }
 534 fprintf( stderr, "\n" );
 535                 }
 536                     break;
 537                 }
 538             } while( p_item++->i_type != CONFIG_HINT_END );
 539
 540             vlc_object_release( p_parser );
 541         }
 542         else
 543         {
 544             int i = 0;
 545             int i_index;
 546             p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
 547             if( !p_list ) return o_view;
 548
 549             /*
 550             * Find the main module
 551             */
 552             for( i_index = 0; i_index < p_list->i_count; i_index++ )
 553             {
 554                 p_parser = (module_t *)p_list->p_values[i_index].p_object;
 555                 if( !strcmp( p_parser->psz_object_name, "main" ) )
 556                     break;
 557             }
 558             if( p_parser == NULL )
 559             {
 560                 msg_Err( p_intf, "could not find the main module in our "
 561                                     "preferences" );
 562                 return o_view;
 563             }
 564             p_item = (p_parser->p_config + i_object_category);
 565             if( ( p_item->i_type == CONFIG_CATEGORY ) &&
 566               ( ( p_item->i_value == CAT_AUDIO )  ||
 567                 ( p_item->i_value == CAT_VIDEO ) ) )
 568                 p_item++;
 569
 570             do
 571             {
 572                 p_item++;
 573                 if( !p_item )
 574                 {
 575                     msg_Err( p_intf, "null item found" );
 576                     break;
 577                 }
 578                 switch(p_item->i_type)
 579                 {
 580                 case CONFIG_SUBCATEGORY:
 581 fprintf( stderr, "drawing subcategory %s\n", [o_name UTF8String] );
 582                     break;
 583                 case CONFIG_SECTION:
 584 fprintf( stderr, "drawing section %s\n", p_item->psz_text );
 585                     break;
 586                 case CONFIG_CATEGORY:
 587 fprintf( stderr, "drawing category %s\n", [o_name UTF8String] );
 588                     break;
 589                 case CONFIG_HINT_END:
 590 fprintf( stderr, "end of (sub)category\n" );
 591                     break;
 592                 case CONFIG_HINT_USAGE:
 593 fprintf( stderr, "skipping hint usage\n" );
 594                     break;
 595                 default:
 596 fprintf( stderr, "%s (%d)", p_item->psz_name, p_item->i_type );
 597                 {
 598                     VLCConfigControl *o_control = nil;
 599                     o_control = [VLCConfigControl newControl:p_item
 600                                                   withView:o_view];
 601                     if( o_control != nil )
 602                     {
 603                         [o_control setAutoresizingMask: NSViewMaxYMargin |
 604                                                         NSViewWidthSizable];
 605                         [o_subviews addObject: o_control];
 606                     }
 607                     break;
 608                 }
 609                 }
 610             } while ( ( p_item->i_type != CONFIG_HINT_END ) &&
 611                       ( p_item->i_type != CONFIG_SUBCATEGORY ) );
 612
 613             vlc_object_release( p_parser );
 614             vlc_list_release( p_list );
 615         }
 616     }
 617
 618     if( o_view != nil )
 619     {
 620         int i_lastItem = 0;
 621         int i_yPos = -2;
 622         int i_max_label = 0;
 623         NSEnumerator *enumerator = [o_subviews objectEnumerator];
 624         VLCConfigControl *o_widget;
 625         NSRect o_frame;
 626
 627         while( ( o_widget = [enumerator nextObject] ) )
 628             if( ( [o_widget isAdvanced] ) && (! b_advanced) )
 629                 continue;
 630             else if( i_max_label < [o_widget getLabelSize] )
 631                 i_max_label = [o_widget getLabelSize];
 632
 633         enumerator = [o_subviews objectEnumerator];
 634         while( ( o_widget = [enumerator nextObject] ) )
 635         {
 636             int i_widget;
 637             if( ( [o_widget isAdvanced] ) && (! b_advanced) )
 638                 continue;
 639
 640             i_widget = [o_widget getViewType];
 641             i_yPos += [VLCConfigControl calcVerticalMargin:i_widget
 642                 lastItem:i_lastItem];
 643             [o_widget setYPos:i_yPos];
 644             o_frame = [o_widget frame];
 645             o_frame.size.width = [o_view frame].size.width -
 646                                     LEFTMARGIN - RIGHTMARGIN;
 647             [o_widget setFrame:o_frame];
 648             [o_widget alignWithXPosition: i_max_label];
 649             i_yPos += [o_widget frame].size.height;
 650             i_lastItem = i_widget;
 651             [o_view addSubview:o_widget];
 652          }
 653         o_frame = [o_view frame];
 654         o_frame.size.height = i_yPos;
 655         [o_view setFrame:o_frame];
 656         [o_prefs_view setDocumentView:o_view];
 657
 658     }
 659     return o_view;
 660 }
 661
 662 - (void)applyChanges
 663 {
 664     unsigned int i;
 665     if( o_subviews != nil )
 666         //Item has been shown
 667         for( i = 0 ; i < [o_subviews count] ; i++ )
 668             [[o_subviews objectAtIndex:i] applyChanges];
 669
 670     if( o_children != IsALeafNode )
 671         for( i = 0 ; i < [o_children count] ; i++ )
 672             [[o_children objectAtIndex:i] applyChanges];
 673 }
 674
 675 @end
 676
 677
 678 @implementation VLCFlippedView
 679
 680 - (BOOL)isFlipped
 681 {
 682     return( YES );
 683 }
 684
 685 @end