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 the VideoLAN team
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, 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)setTitle: (NSString *) o_title_name
 105 {
 106     [o_title setStringValue: o_title_name];
 107 }
 108
 109 - (void)showPrefs
 110 {
 111     /* load our nib (if not already loaded) */
 112     [NSBundle loadNibNamed:@"Preferences" owner:self];
 113
 114     [o_prefs_window center];
 115     [o_prefs_window makeKeyAndOrderFront:self];
 116 }
 117
 118 - (void)initStrings
 119 {
 120     [o_prefs_window setTitle: _NS("Preferences")];
 121     [o_save_btn setTitle: _NS("Save")];
 122     [o_cancel_btn setTitle: _NS("Cancel")];
 123     [o_reset_btn setTitle: _NS("Reset All")];
 124     [o_advanced_ckb setTitle: _NS("Advanced")];
 125 }
 126
 127 - (IBAction)savePrefs: (id)sender
 128 {
 129     /* TODO: call savePrefs on Root item */
 130     [[VLCTreeItem rootItem] applyChanges];
 131     config_SaveConfigFile( p_intf, NULL );
 132     [o_prefs_window orderOut:self];
 133 }
 134
 135 - (IBAction)closePrefs: (id)sender
 136 {
 137     [o_prefs_window orderOut:self];
 138 }
 139
 140 - (IBAction)resetAll: (id)sender
 141 {
 142     NSBeginInformationalAlertSheet(_NS("Reset Preferences"), _NS("Cancel"),
 143         _NS("Continue"), nil, o_prefs_window, self,
 144         @selector(sheetDidEnd: returnCode: contextInfo:), NULL, nil,
 145         _NS("Beware this will reset the VLC media player preferences.\n"
 146             "Are you sure you want to continue?") );
 147 }
 148
 149 - (void)sheetDidEnd:(NSWindow *)o_sheet returnCode:(int)i_return
 150     contextInfo:(void *)o_context
 151 {
 152     if( i_return == NSAlertAlternateReturn )
 153     {
 154         [o_prefs_view setDocumentView: o_empty_view];
 155         config_ResetAll( p_intf );
 156         [[VLCTreeItem rootItem] resetView];
 157         [[o_tree itemAtRow:[o_tree selectedRow]]
 158             showView:o_prefs_view advancedView:
 159             ( [o_advanced_ckb state] == NSOnState ) ? VLC_TRUE : VLC_FALSE];
 160     }
 161 }
 162
 163 - (IBAction)advancedToggle: (id)sender
 164 {
 165     b_advanced = !b_advanced;
 166     [o_advanced_ckb setState: b_advanced];
 167     /* refresh the view of the current treeitem */
 168     [[o_tree itemAtRow:[o_tree selectedRow]] showView:o_prefs_view advancedView:
 169         ( [o_advanced_ckb state] == NSOnState ) ? VLC_TRUE : VLC_FALSE];
 170 }
 171
 172 - (void)loadConfigTree
 173 {
 174 }
 175
 176 - (void)outlineViewSelectionIsChanging:(NSNotification *)o_notification
 177 {
 178 }
 179
 180 /* update the document view to the view of the selected tree item */
 181 - (void)outlineViewSelectionDidChange:(NSNotification *)o_notification
 182 {
 183     [[o_tree itemAtRow:[o_tree selectedRow]] showView: o_prefs_view
 184         advancedView:( [o_advanced_ckb state] == NSOnState ) ?
 185         VLC_TRUE : VLC_FALSE];
 186 }
 187
 188 @end
 189
 190 @implementation VLCPrefs (NSTableDataSource)
 191
 192 - (int)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item {
 193     return (item == nil) ? [[VLCTreeItem rootItem] numberOfChildren] :
 194                             [item numberOfChildren];
 195 }
 196
 197 - (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item
 198 {
 199     return (item == nil) ? YES : ( ([item numberOfChildren] != -1) &&
 200                                    ([item numberOfChildren] != 0));
 201 }
 202
 203 - (id)outlineView:(NSOutlineView *)outlineView child:(int)index ofItem:(id)item {
 204     return (item == nil) ? [[VLCTreeItem rootItem] childAtIndex:index] :
 205                             (id)[item childAtIndex:index];
 206 }
 207
 208 - (id)outlineView:(NSOutlineView *)outlineView
 209     objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
 210 {
 211     return (item == nil) ? @"" : (id)[item getName];
 212 }
 213
 214 @end
 215
 216 @implementation VLCTreeItem
 217
 218 static VLCTreeItem *o_root_item = nil;
 219
 220 #define IsALeafNode ((id)-1)
 221
 222 - (id)initWithName: (NSString *)o_item_name
 223     withTitle: (NSString *)o_item_title
 224     withHelp: (NSString *)o_item_help
 225     ID: (int)i_id
 226     parent:(VLCTreeItem *)o_parent_item
 227     children:(NSMutableArray *)o_children_array
 228     whithCategory: (int) i_category
 229 {
 230     self = [super init];
 231
 232     if( self != nil )
 233     {
 234         o_name = [o_item_name copy];
 235         o_title= [o_item_title copy];
 236         o_help= [o_item_help copy];
 237         i_object_id = i_id;
 238         o_parent = o_parent_item;
 239         o_children = o_children_array;
 240         i_object_category = i_category;
 241         o_subviews = nil;
 242     }
 243     return( self );
 244 }
 245
 246 + (VLCTreeItem *)rootItem
 247 {
 248    if (o_root_item == nil)
 249         o_root_item = [[VLCTreeItem alloc] initWithName:@"main" withTitle:@"main" withHelp:@"" ID:0
 250             parent:nil children:[[NSMutableArray alloc] initWithCapacity:10]
 251             whithCategory: -1];
 252    return o_root_item;
 253 }
 254
 255 - (void)dealloc
 256 {
 257     if (o_children != IsALeafNode) [o_children release];
 258     [o_name release];
 259     [o_title release];
 260     [o_help release];
 261     [super dealloc];
 262 }
 263
 264 /* Creates and returns the array of children
 265  * Loads children incrementally */
 266 - (NSArray *)children
 267 {
 268     if( o_children == IsALeafNode )
 269         return o_children;
 270     if( [ o_children count] == 0 )
 271     {
 272         intf_thread_t   *p_intf = VLCIntf;
 273         vlc_list_t      *p_list;
 274         module_t        *p_module = NULL;
 275         module_config_t *p_item;
 276         int             i_index;
 277
 278         /* List the modules */
 279         p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
 280         if( !p_list ) return nil;
 281
 282         if( [[self getName] isEqualToString: @"main"] )
 283         {
 284             /*
 285             * Find the main module
 286             */
 287             for( i_index = 0; i_index < p_list->i_count; i_index++ )
 288             {
 289                 p_module = (module_t *)p_list->p_values[i_index].p_object;
 290                 if( !strcmp( p_module->psz_object_name, "main" ) )
 291                     break;
 292             }
 293             if( p_module == NULL )
 294             {
 295                 msg_Err( p_intf,
 296                     "could not load the preferences" );
 297                 return nil;
 298             }
 299             if( i_index < p_list->i_count )
 300             {
 301                 /* We found the main module */
 302                 /* Enumerate config categories and store a reference so we can
 303                  * generate their config panel them when it is asked by the user. */
 304                 VLCTreeItem *p_last_category = NULL;
 305                 p_item = p_module->p_config;
 306                 o_children = [[NSMutableArray alloc] initWithCapacity:10];
 307                 if( p_item ) do
 308                 {
 309                     NSString *o_child_name;
 310                     NSString *o_child_title;
 311                     NSString *o_child_help;
 312                     switch( p_item->i_type )
 313                     {
 314                     case CONFIG_CATEGORY:
 315                         if( p_item->i_value == -1 ) break;
 316                         o_child_name = [[VLCMain sharedInstance]
 317                             localizedString: config_CategoryNameGet( p_item->i_value ) ];
 318                         o_child_title = o_child_name;
 319                         o_child_help = [[VLCMain sharedInstance]
 320                             localizedString: config_CategoryHelpGet( p_item->i_value ) ];
 321                         p_last_category = [VLCTreeItem alloc];
 322                         [o_children addObject:[p_last_category
 323                             initWithName: o_child_name
 324                             withTitle: o_child_title
 325                             withHelp: o_child_help
 326                             ID: p_item->i_value
 327                             parent:self
 328                             children:[[NSMutableArray alloc]
 329                                 initWithCapacity:10]
 330                             whithCategory: p_item - p_module->p_config]];
 331                         break;
 332                     case CONFIG_SUBCATEGORY:
 333                         if( p_item->i_value == -1 ) break;
 334                         o_child_name = [[VLCMain sharedInstance]
 335                             localizedString: config_CategoryNameGet( p_item->i_value ) ];
 336                         o_child_title = o_child_name;
 337                         o_child_help = [[VLCMain sharedInstance]
 338                             localizedString: config_CategoryHelpGet( p_item->i_value ) ];
 339                         if( p_item->i_value != SUBCAT_PLAYLIST_GENERAL &&
 340                             p_item->i_value != SUBCAT_VIDEO_GENERAL &&
 341                             p_item->i_value != SUBCAT_INPUT_GENERAL &&
 342                             p_item->i_value != SUBCAT_INTERFACE_GENERAL &&
 343                             p_item->i_value != SUBCAT_SOUT_GENERAL &&
 344                             p_item->i_value != SUBCAT_ADVANCED_MISC &&
 345                             p_item->i_value != SUBCAT_AUDIO_GENERAL )
 346                             [p_last_category->o_children
 347                                 addObject:[[VLCTreeItem alloc]
 348                                 initWithName: o_child_name
 349                                 withTitle: o_child_title
 350                                 withHelp: o_child_help
 351                                 ID: p_item->i_value
 352                                 parent:p_last_category
 353                                 children:[[NSMutableArray alloc]
 354                                     initWithCapacity:10]
 355                                 whithCategory: p_item - p_module->p_config]];
 356                         break;
 357                     default:
 358                         break;
 359                     }
 360                 } while( p_item->i_type != CONFIG_HINT_END && p_item++ );
 361             }
 362
 363             /* Build a tree of the plugins */
 364             /* Add the capabilities */
 365             for( i_index = 0; i_index < p_list->i_count; i_index++ )
 366             {
 367                 p_module = (module_t *)p_list->p_values[i_index].p_object;
 368
 369                 /* Exclude the main module */
 370                 if( !strcmp( p_module->psz_object_name, "main" ) )
 371                     continue;
 372
 373                 /* Exclude empty plugins (submodules don't have config */
 374                 /* options, they are stored in the parent module) */
 375                 if( p_module->b_submodule )
 376                     continue;
 377                 else
 378                     p_item = p_module->p_config;
 379
 380                 if( !p_item ) continue;
 381                 int i_category = -1;
 382                 int i_subcategory = -1;
 383                 int i_options = 0;
 384                 do
 385                 {
 386                     if( p_item->i_type == CONFIG_CATEGORY )
 387                         i_category = p_item->i_value;
 388                     else if( p_item->i_type == CONFIG_SUBCATEGORY )
 389                         i_subcategory = p_item->i_value;
 390
 391                     if( p_item->i_type & CONFIG_ITEM )
 392                         i_options ++;
 393                     if( i_options > 0 && i_category >= 0 && i_subcategory >= 0 )
 394                         break;
 395                 } while( p_item->i_type != CONFIG_HINT_END && p_item++ );
 396                 if( !i_options ) continue;
 397
 398                 /* Find the right category item */
 399
 400                 long cookie;
 401                 vlc_bool_t b_found = VLC_FALSE;
 402                 unsigned int i;
 403                 VLCTreeItem* p_category_item, * p_subcategory_item;
 404                 for (i = 0 ; i < [o_children count] ; i++)
 405                 {
 406                     p_category_item = [o_children objectAtIndex: i];
 407                     if( p_category_item->i_object_id == i_category )
 408                     {
 409                         b_found = VLC_TRUE;
 410                         break;
 411                     }
 412                 }
 413                 if( !b_found ) continue;
 414
 415                 /* Find subcategory item */
 416                 b_found = VLC_FALSE;
 417                 cookie = -1;
 418                 for (i = 0 ; i < [p_category_item->o_children count] ; i++)
 419                 {
 420                     p_subcategory_item = [p_category_item->o_children
 421                                             objectAtIndex: i];
 422                     if( p_subcategory_item->i_object_id == i_subcategory )
 423                     {
 424                         b_found = VLC_TRUE;
 425                         break;
 426                     }
 427                 }
 428                 if( !b_found )
 429                     p_subcategory_item = p_category_item;
 430
 431                 [p_subcategory_item->o_children addObject:[[VLCTreeItem alloc]
 432                     initWithName:[[VLCMain sharedInstance]
 433                         localizedString: p_module->psz_shortname ?
 434                         p_module->psz_shortname : p_module->psz_object_name ]
 435                     withTitle:[[VLCMain sharedInstance]
 436                         localizedString: p_module->psz_longname ?
 437                         p_module->psz_longname : p_module->psz_object_name ]
 438                     withHelp: @""
 439                     ID: p_module->i_object_id
 440                     parent:p_subcategory_item
 441                     children:IsALeafNode
 442                     whithCategory: -1]];
 443             }
 444         }
 445         vlc_list_release( p_list );
 446     }
 447     return o_children;
 448 }
 449
 450 - (int)getObjectID
 451 {
 452     return i_object_id;
 453 }
 454
 455 - (NSString *)getName
 456 {
 457     return o_name;
 458 }
 459
 460 - (NSString *)getTitle
 461 {
 462     return o_title;
 463 }
 464
 465 - (NSString *)getHelp
 466 {
 467     return o_help;
 468 }
 469
 470 - (VLCTreeItem *)childAtIndex:(int)i_index
 471 {
 472     return [[self children] objectAtIndex:i_index];
 473 }
 474
 475 - (int)numberOfChildren {
 476     id i_tmp = [self children];
 477     return (i_tmp == IsALeafNode) ? (-1) : (int)[i_tmp count];
 478 }
 479
 480 - (BOOL)hasPrefs:(NSString *)o_module_name
 481 {
 482     intf_thread_t *p_intf = VLCIntf;
 483     module_t *p_parser;
 484     vlc_list_t *p_list;
 485     char *psz_module_name;
 486     int i_index;
 487
 488     psz_module_name = (char *)[o_module_name UTF8String];
 489
 490     /* look for module */
 491     p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
 492
 493     for( i_index = 0; i_index < p_list->i_count; i_index++ )
 494     {
 495         p_parser = (module_t *)p_list->p_values[i_index].p_object ;
 496
 497         if( !strcmp( p_parser->psz_object_name, psz_module_name ) )
 498         {
 499             BOOL b_has_prefs = p_parser->i_config_items != 0;
 500             vlc_list_release( p_list );
 501             return( b_has_prefs );
 502         }
 503     }
 504
 505     vlc_list_release( p_list );
 506
 507     return( NO );
 508 }
 509
 510 - (NSView *)showView:(NSScrollView *)o_prefs_view
 511     advancedView:(vlc_bool_t) b_advanced
 512 {
 513     NSRect          s_vrc;
 514     NSView          *o_view;
 515
 516     [[VLCPrefs sharedInstance] setTitle: [self getTitle]];
 517     /* NSLog( [self getHelp] ); */
 518     s_vrc = [[o_prefs_view contentView] bounds]; s_vrc.size.height -= 4;
 519     o_view = [[VLCFlippedView alloc] initWithFrame: s_vrc];
 520     [o_view setAutoresizingMask: NSViewWidthSizable | NSViewMinYMargin |
 521                                     NSViewMaxYMargin];
 522
 523 /* Create all subviews if it isn't already done because we cannot use */
 524 /* setHiden for MacOS < 10.3*/
 525     if( o_subviews == nil )
 526     {
 527         intf_thread_t   *p_intf = VLCIntf;
 528         vlc_list_t      *p_list;
 529         module_t        *p_parser = NULL;
 530         module_config_t *p_item;
 531
 532         o_subviews = [[NSMutableArray alloc] initWithCapacity:10];
 533         /* Get a pointer to the module */
 534         if( i_object_category == -1 )
 535         {
 536             p_parser = (module_t *) vlc_object_get( p_intf, i_object_id );
 537             if( !p_parser || p_parser->i_object_type != VLC_OBJECT_MODULE )
 538             {
 539                 /* 0OOoo something went really bad */
 540                 return nil;
 541             }
 542             p_item = p_parser->p_config;
 543             int i = 0;
 544
 545             p_item = p_parser->p_config + 1;
 546
 547             do
 548             {
 549                 if( !p_item )
 550                 {
 551                     msg_Err( p_intf, "invalid preference item found" );
 552                     break;
 553                 }
 554                 switch(p_item->i_type)
 555                 {
 556                 case CONFIG_SUBCATEGORY:
 557                     break;
 558                 case CONFIG_CATEGORY:
 559                     break;
 560                 case CONFIG_SECTION:
 561                     break;
 562                 case CONFIG_HINT_END:
 563                     break;
 564                 case CONFIG_HINT_USAGE:
 565                     break;
 566                 default:
 567                 {
 568                     VLCConfigControl *o_control = nil;
 569                     o_control = [VLCConfigControl newControl:p_item
 570                                                   withView:o_view];
 571                     if( o_control != nil )
 572                     {
 573                         [o_control setAutoresizingMask: NSViewMaxYMargin |
 574                             NSViewWidthSizable];
 575                         [o_subviews addObject: o_control];
 576                     }
 577                 }
 578                     break;
 579                 }
 580             } while( p_item++->i_type != CONFIG_HINT_END );
 581
 582             vlc_object_release( p_parser );
 583         }
 584         else
 585         {
 586             int i = 0;
 587             int i_index;
 588             p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
 589             if( !p_list ) return o_view;
 590
 591             /*
 592             * Find the main module
 593             */
 594             for( i_index = 0; i_index < p_list->i_count; i_index++ )
 595             {
 596                 p_parser = (module_t *)p_list->p_values[i_index].p_object;
 597                 if( !strcmp( p_parser->psz_object_name, "main" ) )
 598                     break;
 599             }
 600             if( p_parser == NULL )
 601             {
 602                 msg_Err( p_intf, "could not load preferences" );
 603                 return o_view;
 604             }
 605             p_item = (p_parser->p_config + i_object_category);
 606             if( ( p_item->i_type == CONFIG_CATEGORY ) &&
 607               ( ( p_item->i_value == CAT_PLAYLIST )  ||
 608                 ( p_item->i_value == CAT_AUDIO )  ||
 609                 ( p_item->i_value == CAT_VIDEO ) ) )
 610                 p_item++;
 611
 612             do
 613             {
 614                 p_item++;
 615                 if( !p_item )
 616                 {
 617                     msg_Err( p_intf, "invalid preference item found" );
 618                     break;
 619                 }
 620                 switch( p_item->i_type )
 621                 {
 622                 case CONFIG_SUBCATEGORY:
 623                     break;
 624                 case CONFIG_CATEGORY:
 625                     break;
 626                 case CONFIG_SECTION:
 627                     break;
 628                 case CONFIG_HINT_END:
 629                     break;
 630                 case CONFIG_HINT_USAGE:
 631                     break;
 632                 default:
 633                 {
 634                     VLCConfigControl *o_control = nil;
 635                     o_control = [VLCConfigControl newControl:p_item
 636                                                   withView:o_view];
 637                     if( o_control != nil )
 638                     {
 639                         [o_control setAutoresizingMask: NSViewMaxYMargin |
 640                                                         NSViewWidthSizable];
 641                         [o_subviews addObject: o_control];
 642                     }
 643                     break;
 644                 }
 645                 }
 646             } while ( ( p_item->i_type != CONFIG_HINT_END ) &&
 647                       ( p_item->i_type != CONFIG_SUBCATEGORY ) );
 648
 649             vlc_list_release( p_list );
 650         }
 651     }
 652
 653     if( o_view != nil )
 654     {
 655         int i_lastItem = 0;
 656         int i_yPos = -2;
 657         int i_max_label = 0;
 658         int i_show_advanced = 0;
 659
 660         NSEnumerator *enumerator = [o_subviews objectEnumerator];
 661         VLCConfigControl *o_widget;
 662         NSRect o_frame;
 663
 664         while( ( o_widget = [enumerator nextObject] ) )
 665             if( ( [o_widget isAdvanced] ) && (! b_advanced) )
 666                 continue;
 667             else if( i_max_label < [o_widget getLabelSize] )
 668                 i_max_label = [o_widget getLabelSize];
 669
 670         enumerator = [o_subviews objectEnumerator];
 671         while( ( o_widget = [enumerator nextObject] ) )
 672         {
 673             int i_widget;
 674             if( ( [o_widget isAdvanced] ) && (! b_advanced) )
 675             {
 676                 i_show_advanced++;
 677                 continue;
 678             }
 679
 680             i_widget = [o_widget getViewType];
 681             i_yPos += [VLCConfigControl calcVerticalMargin:i_widget
 682                 lastItem:i_lastItem];
 683             [o_widget setYPos:i_yPos];
 684             o_frame = [o_widget frame];
 685             o_frame.size.width = [o_view frame].size.width -
 686                                     LEFTMARGIN - RIGHTMARGIN;
 687             [o_widget setFrame:o_frame];
 688             [o_widget alignWithXPosition: i_max_label];
 689             i_yPos += [o_widget frame].size.height;
 690             i_lastItem = i_widget;
 691             [o_view addSubview:o_widget];
 692          }
 693         if( i_show_advanced != 0 )
 694         {
 695             /* We add the advanced notice... */
 696             NSRect s_rc = [o_view frame];
 697             NSTextField *o_label;
 698             s_rc.size.height = 17;
 699             s_rc.origin.x = LEFTMARGIN;
 700             s_rc.origin.y = i_yPos += [VLCConfigControl
 701                                         calcVerticalMargin:CONFIG_ITEM_STRING
 702                                         lastItem:i_lastItem];
 703             o_label = [[[NSTextField alloc] initWithFrame: s_rc] retain];
 704             [o_label setDrawsBackground: NO];
 705             [o_label setBordered: NO];
 706             [o_label setEditable: NO];
 707             [o_label setSelectable: NO];
 708             [o_label setStringValue: _NS("Some options are hidden. " \
 709                                 "Check \"Advanced\" to display them.")];
 710             [o_label setFont:[NSFont systemFontOfSize:10]];
 711             [o_label sizeToFit];
 712             [o_view addSubview:o_label];
 713             i_yPos += [o_label frame].size.height;
 714         }
 715         o_frame = [o_view frame];
 716         o_frame.size.height = i_yPos;
 717         [o_view setFrame:o_frame];
 718         [o_prefs_view setDocumentView:o_view];
 719
 720     }
 721     return o_view;
 722 }
 723
 724 - (void)applyChanges
 725 {
 726     unsigned int i;
 727     if( o_subviews != nil )
 728         //Item has been shown
 729         for( i = 0 ; i < [o_subviews count] ; i++ )
 730             [[o_subviews objectAtIndex:i] applyChanges];
 731
 732     if( o_children != IsALeafNode )
 733         for( i = 0 ; i < [o_children count] ; i++ )
 734             [[o_children objectAtIndex:i] applyChanges];
 735 }
 736
 737 - (void)resetView
 738 {
 739     unsigned int i;
 740     if( o_subviews != nil )
 741     {
 742         //Item has been shown
 743         [o_subviews release];
 744         o_subviews = nil;
 745     }
 746
 747     if( o_children != IsALeafNode )
 748         for( i = 0 ; i < [o_children count] ; i++ )
 749             [[o_children objectAtIndex:i] resetView];
 750 }
 751
 752 @end
 753
 754
 755 @implementation VLCFlippedView
 756
 757 - (BOOL)isFlipped
 758 {
 759     return( YES );
 760 }
 761
 762 @end