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

   1 /*****************************************************************************
   2  * prefs.m: MacOS X module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2002-2006 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    - a redraw view action
  34    - the children action should generate a list of the treeitems children (to be used by VLCPrefs datasource)
  35
  36    The class is sort of a mix of wxwindows intfs, PrefsTreeCtrl and ConfigTreeData
  37 */
  38 /* VLCConfigControl are subclassed NSView's containing and managing individual config items
  39    the classes are VERY closely related to wxwindows ConfigControls */
  40
  41 /*****************************************************************************
  42  * Preamble
  43  *****************************************************************************/
  44 #include <stdlib.h>                                      /* malloc(), free() */
  45 #include <sys/param.h>                                    /* for MAXPATHLEN */
  46 #include <string.h>
  47
  48 #ifdef HAVE_CONFIG_H
  49 # include "config.h"
  50 #endif
  51
  52 #include <vlc_common.h>
  53 #include <vlc_config_cat.h>
  54
  55 #import "intf.h"
  56 #import "prefs.h"
  57 #import "simple_prefs.h"
  58 #import "prefs_widgets.h"
  59 #import "vlc_keys.h"
  60
  61 /* /!\ Warning: Unreadable code :/ */
  62
  63 @interface VLCTreeItem : NSObject
  64 {
  65     NSString *o_name;
  66     NSString *o_title;
  67     NSString *o_help;
  68     vlc_object_t * _vlc_object;
  69     VLCTreeItem *o_parent;
  70     NSMutableArray *o_children;
  71     int i_object_category;
  72     NSMutableArray *o_subviews;
  73 }
  74
  75 - (id)initWithName: (NSString *)o_item_name
  76     withTitle: (NSString *)o_item_title
  77     withHelp: (NSString *)o_item_help
  78     withObject: (vlc_object_t *)object
  79     parent:(VLCTreeItem *)o_parent_item
  80     children:(NSMutableArray *)o_children_array
  81     whithCategory: (int) i_category;
  82
  83 + (VLCTreeItem *)rootItem;
  84 - (int)numberOfChildren;
  85 - (VLCTreeItem *)childAtIndex:(int)i_index;
  86 - (vlc_object_t*)vlcObject;
  87 - (NSString *)name;
  88 - (NSString *)title;
  89 - (NSString *)help;
  90 - (BOOL)hasPrefs:(NSString *)o_module_name;
  91 - (NSView *)showView:(NSScrollView *)o_prefs_view;
  92 - (void)applyChanges;
  93 - (void)resetView;
  94
  95 @end
  96
  97 #pragma mark -
  98
  99 /*****************************************************************************
 100  * VLCPrefs implementation
 101  *****************************************************************************/
 102 @implementation VLCPrefs
 103
 104 static VLCPrefs *_o_sharedMainInstance = nil;
 105
 106 + (VLCPrefs *)sharedInstance
 107 {
 108     return _o_sharedMainInstance ? _o_sharedMainInstance : [[self alloc] init];
 109 }
 110
 111 - (id)init
 112 {
 113     if( _o_sharedMainInstance ) {
 114         [self dealloc];
 115     }
 116     else
 117     {
 118         _o_sharedMainInstance = [super init];
 119         p_intf = VLCIntf;
 120         o_empty_view = [[NSView alloc] init];
 121     }
 122
 123     return _o_sharedMainInstance;
 124 }
 125
 126 - (void)dealloc
 127 {
 128     [o_empty_view release];
 129     [super dealloc];
 130 }
 131
 132 - (void)awakeFromNib
 133 {
 134     p_intf = VLCIntf;
 135
 136     [self initStrings];
 137     [o_prefs_view setBorderType: NSGrooveBorder];
 138     [o_prefs_view setHasVerticalScroller: YES];
 139     [o_prefs_view setDrawsBackground: NO];
 140     [o_prefs_view setDocumentView: o_empty_view];
 141     [o_tree selectRow:0 byExtendingSelection:NO];
 142 }
 143
 144 - (void)setTitle: (NSString *) o_title_name
 145 {
 146     [o_title setStringValue: o_title_name];
 147 }
 148
 149 - (void)showPrefs
 150 {
 151     [[o_basicFull_matrix cellAtRow:0 column:0] setState: NSOffState];
 152     [[o_basicFull_matrix cellAtRow:0 column:1] setState: NSOnState];
 153
 154     [o_prefs_window center];
 155     [o_prefs_window makeKeyAndOrderFront:self];
 156 }
 157
 158 - (void)initStrings
 159 {
 160     [o_prefs_window setTitle: _NS("Preferences")];
 161     [o_save_btn setTitle: _NS("Save")];
 162     [o_cancel_btn setTitle: _NS("Cancel")];
 163     [o_reset_btn setTitle: _NS("Reset All")];
 164     [[o_basicFull_matrix cellAtRow: 0 column: 0] setStringValue: _NS("Basic")];
 165     [[o_basicFull_matrix cellAtRow: 0 column: 1] setStringValue: _NS("All")];
 166 }
 167
 168 - (IBAction)savePrefs: (id)sender
 169 {
 170     /* TODO: call savePrefs on Root item */
 171     [[VLCTreeItem rootItem] applyChanges];
 172     config_SaveConfigFile( p_intf, NULL );
 173     [o_prefs_window orderOut:self];
 174 }
 175
 176 - (IBAction)closePrefs: (id)sender
 177 {
 178     [o_prefs_window orderOut:self];
 179 }
 180
 181 - (IBAction)resetAll: (id)sender
 182 {
 183     NSBeginInformationalAlertSheet(_NS("Reset Preferences"), _NS("Cancel"),
 184         _NS("Continue"), nil, o_prefs_window, self,
 185         @selector(sheetDidEnd: returnCode: contextInfo:), NULL, nil,
 186         _NS("Beware this will reset the VLC media player preferences.\n"
 187             "Are you sure you want to continue?") );
 188 }
 189
 190 - (void)sheetDidEnd:(NSWindow *)o_sheet returnCode:(int)i_return
 191     contextInfo:(void *)o_context
 192 {
 193     if( i_return == NSAlertAlternateReturn )
 194     {
 195         [o_prefs_view setDocumentView: o_empty_view];
 196         config_ResetAll( p_intf );
 197         [[VLCTreeItem rootItem] resetView];
 198         [[o_tree itemAtRow:[o_tree selectedRow]]
 199             showView:o_prefs_view];
 200     }
 201 }
 202
 203 - (IBAction)buttonAction: (id)sender
 204 {
 205     [o_prefs_window orderOut: self];
 206     [[o_basicFull_matrix cellAtRow:0 column:0] setState: NSOnState];
 207     [[o_basicFull_matrix cellAtRow:0 column:1] setState: NSOffState];
 208     [[[VLCMain sharedInstance] getSimplePreferences] showSimplePrefs];
 209 }
 210
 211 - (void)loadConfigTree
 212 {
 213 }
 214
 215 - (void)outlineViewSelectionIsChanging:(NSNotification *)o_notification
 216 {
 217 }
 218
 219 /* update the document view to the view of the selected tree item */
 220 - (void)outlineViewSelectionDidChange:(NSNotification *)o_notification
 221 {
 222     [[o_tree itemAtRow:[o_tree selectedRow]] showView: o_prefs_view];
 223 }
 224
 225 @end
 226
 227 @implementation VLCPrefs (NSTableDataSource)
 228
 229 - (int)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item {
 230     return (item == nil) ? [[VLCTreeItem rootItem] numberOfChildren] :
 231                             [item numberOfChildren];
 232 }
 233
 234 - (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item
 235 {
 236     return (item == nil) ? YES : ( ([item numberOfChildren] != -1) &&
 237                                    ([item numberOfChildren] != 0));
 238 }
 239
 240 - (id)outlineView:(NSOutlineView *)outlineView child:(int)index ofItem:(id)item {
 241     return (item == nil) ? [[VLCTreeItem rootItem] childAtIndex:index] :
 242                             (id)[item childAtIndex:index];
 243 }
 244
 245 - (id)outlineView:(NSOutlineView *)outlineView
 246     objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
 247 {
 248     return (item == nil) ? @"" : (id)[item name];
 249 }
 250
 251 @end
 252
 253 @implementation VLCTreeItem
 254
 255 static VLCTreeItem *o_root_item = nil;
 256
 257 #define IsALeafNode ((id)-1)
 258
 259 - (id)initWithName: (NSString *)o_item_name
 260     withTitle: (NSString *)o_item_title
 261     withHelp: (NSString *)o_item_help
 262     withObject: (vlc_object_t *)object
 263     parent:(VLCTreeItem *)o_parent_item
 264     children:(NSMutableArray *)o_children_array
 265     whithCategory: (int) i_category
 266 {
 267     self = [super init];
 268
 269     if( self != nil )
 270     {
 271         o_name = [o_item_name copy];
 272         o_title= [o_item_title copy];
 273         o_help= [o_item_help copy];
 274         _vlc_object = object ? vlc_object_hold( object ) : NULL;
 275         o_parent = o_parent_item;
 276         o_children = o_children_array;
 277         i_object_category = i_category;
 278         o_subviews = nil;
 279     }
 280     return( self );
 281 }
 282
 283 + (VLCTreeItem *)rootItem
 284 {
 285    if (o_root_item == nil)
 286         o_root_item = [[VLCTreeItem alloc] initWithName:@"main" withTitle:@"main" withHelp:@"" withObject:NULL
 287             parent:nil children:[[NSMutableArray alloc] initWithCapacity:10]
 288             whithCategory: -1];
 289    return o_root_item;
 290 }
 291
 292 - (void)dealloc
 293 {
 294     if(_vlc_object) vlc_object_release( _vlc_object );
 295     if (o_children != IsALeafNode) [o_children release];
 296     [o_name release];
 297     [o_title release];
 298     [o_help release];
 299     [super dealloc];
 300 }
 301
 302 /* Creates and returns the array of children
 303  * Loads children incrementally */
 304 - (NSArray *)children
 305 {
 306     if( o_children == IsALeafNode )
 307         return o_children;
 308     if( [ o_children count] == 0 )
 309     {
 310         intf_thread_t   *p_intf = VLCIntf;
 311         module_t       **p_list;
 312         module_t        *p_module = NULL;
 313         module_t        *p_main_module;
 314         module_config_t *p_items;
 315         if( [[self name] isEqualToString: @"main"] )
 316         {
 317             p_main_module = module_get_main( p_intf );
 318             assert( p_main_module );
 319
 320             /* We found the main module */
 321             /* Enumerate config categories and store a reference so we can
 322              * generate their config panel them when it is asked by the user. */
 323             VLCTreeItem *p_last_category = NULL;
 324             unsigned int i_confsize;
 325             p_items = module_config_get( p_main_module, &i_confsize );
 326             o_children = [[NSMutableArray alloc] initWithCapacity:10];
 327             for( int i = 0; i < i_confsize; i++ )
 328             {
 329                 NSString *o_child_name;
 330                 NSString *o_child_title;
 331                 NSString *o_child_help;
 332
 333                 switch( p_items[i].i_type )
 334                 {
 335                     case CONFIG_CATEGORY:
 336                         if( p_items[i].value.i == -1 ) break;
 337
 338                         o_child_name = [[VLCMain sharedInstance]
 339                             localizedString: config_CategoryNameGet( p_items[i].value.i )];
 340                         o_child_title = o_child_name;
 341                         o_child_help = [[VLCMain sharedInstance]
 342                             localizedString: config_CategoryHelpGet( p_items[i].value.i )];
 343                         p_last_category = [VLCTreeItem alloc];
 344                         [o_children addObject:[p_last_category
 345                             initWithName: o_child_name
 346                             withTitle: o_child_title
 347                             withHelp: o_child_help
 348                             withObject: (vlc_object_t*)p_main_module
 349                             parent:self
 350                             children:[[NSMutableArray alloc]
 351                                 initWithCapacity:10]
 352                             whithCategory: p_items[i].value.i]];
 353                         break;
 354                     case CONFIG_SUBCATEGORY:
 355                         if( p_items[i].value.i == -1 ) break;
 356
 357                         if( p_items[i].value.i != SUBCAT_PLAYLIST_GENERAL &&
 358                             p_items[i].value.i != SUBCAT_VIDEO_GENERAL &&
 359                             p_items[i].value.i != SUBCAT_INPUT_GENERAL &&
 360                             p_items[i].value.i != SUBCAT_INTERFACE_GENERAL &&
 361                             p_items[i].value.i != SUBCAT_SOUT_GENERAL &&
 362                             p_items[i].value.i != SUBCAT_ADVANCED_MISC &&
 363                             p_items[i].value.i != SUBCAT_AUDIO_GENERAL )
 364                         {
 365                             o_child_name = [[VLCMain sharedInstance]
 366                                 localizedString: config_CategoryNameGet( p_items[i].value.i ) ];
 367                             o_child_title = o_child_name;
 368                             o_child_help = [[VLCMain sharedInstance]
 369                                 localizedString: config_CategoryHelpGet( p_items[i].value.i ) ];
 370
 371                             [p_last_category->o_children
 372                                 addObject:[[VLCTreeItem alloc]
 373                                 initWithName: o_child_name
 374                                 withTitle: o_child_title
 375                                 withHelp: o_child_help
 376                                 withObject: (vlc_object_t*)p_main_module
 377                                 parent:p_last_category
 378                                 children:[[NSMutableArray alloc]
 379                                     initWithCapacity:10]
 380                                 whithCategory: p_items[i].value.i]];
 381                         }
 382
 383                         break;
 384                     default:
 385                         break;
 386                 }
 387             }
 388
 389             vlc_object_release( (vlc_object_t *)p_main_module );
 390
 391             /* List the modules */
 392             p_list = module_list_get( NULL );
 393             if( !p_list ) return nil;
 394
 395             /* Build a tree of the plugins */
 396             /* Add the capabilities */
 397             for( size_t i = 0; p_list[i]; i++ )
 398             {
 399                 unsigned int confsize;
 400                 p_module = p_list[i];
 401
 402                 /* Exclude the main module */
 403                 if( module_is_main( p_module ) )
 404                     continue;
 405
 406                 /* Exclude empty plugins (submodules don't have config */
 407                 /* options, they are stored in the parent module) */
 408                 p_items = module_config_get( p_module, &confsize );
 409
 410                 unsigned int j;
 411
 412                 int i_category = -1;
 413                 int i_subcategory = -1;
 414                 bool b_item = false;
 415
 416                 for( j = 0; j < confsize; j++ )
 417                 {
 418                     if( p_items[j].i_type == CONFIG_CATEGORY )
 419                         i_category = p_items[j].value.i;
 420                     else if( p_items[j].i_type == CONFIG_SUBCATEGORY )
 421                         i_subcategory = p_items[j].value.i;
 422
 423                     if( p_items[j].i_type & CONFIG_ITEM )
 424                         b_item = true;
 425
 426                     if( b_item && i_category >= 0 && i_subcategory >= 0 )
 427                         break;
 428                 }
 429
 430                 if( !b_item ) continue;
 431
 432                 /* Find the right category item */
 433
 434                 long cookie;
 435                 bool b_found = false;
 436
 437                 VLCTreeItem* p_category_item, * p_subcategory_item;
 438                 for (j = 0 ; j < [o_children count] ; j++)
 439                 {
 440                     p_category_item = [o_children objectAtIndex: j];
 441                     if( p_category_item->i_object_category == i_category )
 442                     {
 443                         b_found = true;
 444                         break;
 445                     }
 446                 }
 447                 if( !b_found ) continue;
 448
 449                 /* Find subcategory item */
 450                 b_found = false;
 451                 cookie = -1;
 452                 for (j = 0 ; j < [p_category_item->o_children count] ; j++)
 453                 {
 454                     p_subcategory_item = [p_category_item->o_children
 455                                             objectAtIndex: j];
 456                     if( p_subcategory_item->i_object_category == i_subcategory )
 457                     {
 458                         b_found = true;
 459                         break;
 460                     }
 461                 }
 462                 if( !b_found )
 463                     p_subcategory_item = p_category_item;
 464
 465                 [p_subcategory_item->o_children addObject:[[VLCTreeItem alloc]
 466                     initWithName:[[VLCMain sharedInstance]
 467                         localizedString: module_get_name( p_module, false ) ]
 468                     withTitle:[[VLCMain sharedInstance]
 469                         localizedString:  module_GetLongName( p_module ) ]
 470                     withHelp: @""
 471                     withObject: (vlc_object_t*)p_main_module
 472                     parent:p_subcategory_item
 473                     children:IsALeafNode
 474                     whithCategory: -1]];
 475                 }
 476             module_list_free( p_list );
 477         }
 478     }
 479     return o_children;
 480 }
 481
 482 - (vlc_object_t *)vlcObject
 483 {
 484     return vlc_object_hold(_vlc_object);
 485 }
 486
 487 - (NSString *)name
 488 {
 489     return [[o_name retain] autorelease];
 490 }
 491
 492 - (NSString *)title
 493 {
 494     return [[o_title retain] autorelease];
 495 }
 496
 497 - (NSString *)help
 498 {
 499     return [[o_help retain] autorelease];
 500 }
 501
 502 - (VLCTreeItem *)childAtIndex:(int)i_index
 503 {
 504     return [[self children] objectAtIndex:i_index];
 505 }
 506
 507 - (int)numberOfChildren {
 508     id i_tmp = [self children];
 509     return (i_tmp == IsALeafNode) ? (-1) : (int)[i_tmp count];
 510 }
 511
 512 - (BOOL)hasPrefs:(NSString *)o_module_name
 513 {
 514     unsigned int confsize;
 515
 516     intf_thread_t *p_intf = VLCIntf;
 517     module_t *p_parser;
 518
 519     const char *psz_module_name = (char *)[o_module_name UTF8String];
 520
 521     /* look for module */
 522     p_parser = module_find( p_intf, psz_module_name );
 523     if( !p_parser )
 524         return( NO );
 525
 526     module_config_get( p_parser, &confsize );
 527     BOOL b_has_prefs = confsize != 0;
 528     module_release( p_parser );
 529     return( b_has_prefs );
 530 }
 531
 532 - (NSView *)showView:(NSScrollView *)o_prefs_view
 533 {
 534     NSRect          s_vrc;
 535     NSView          *o_view;
 536
 537     [[VLCPrefs sharedInstance] setTitle: [self title]];
 538     /* NSLog( [self getHelp] ); */
 539     s_vrc = [[o_prefs_view contentView] bounds]; s_vrc.size.height -= 4;
 540     o_view = [[VLCFlippedView alloc] initWithFrame: s_vrc];
 541     [o_view setAutoresizingMask: NSViewWidthSizable | NSViewMinYMargin |
 542                                     NSViewMaxYMargin];
 543
 544 /* Create all subviews if it isn't already done because we cannot use */
 545 /* setHiden for MacOS < 10.3*/
 546     if( o_subviews == nil )
 547     {
 548         intf_thread_t   *p_intf = VLCIntf;
 549         vlc_list_t      *p_list;
 550         module_t        *p_module = NULL;
 551         module_t        *p_main_module;
 552         module_config_t *p_items;
 553         unsigned int confsize;
 554
 555         o_subviews = [[NSMutableArray alloc] initWithCapacity:10];
 556         /* Get a pointer to the module */
 557         if( i_object_category == -1 )
 558         {
 559             p_module = (module_t *) [self vlcObject];
 560             assert( p_module );
 561
 562             p_items = module_config_get( p_module, &confsize );
 563
 564             for( unsigned int i = 0; i < confsize; i++ )
 565             {
 566                 switch( p_items[i].i_type )
 567                 {
 568                     case CONFIG_SUBCATEGORY:
 569                     case CONFIG_CATEGORY:
 570                     case CONFIG_SECTION:
 571                     case CONFIG_HINT_USAGE:
 572                         break;
 573                     default:
 574                     {
 575                         VLCConfigControl *o_control = nil;
 576                         o_control = [VLCConfigControl newControl:&p_items[i]
 577                                                       withView:o_view];
 578                         if( o_control )
 579                         {
 580                             [o_control setAutoresizingMask: NSViewMaxYMargin |
 581                                 NSViewWidthSizable];
 582                             [o_subviews addObject: o_control];
 583                         }
 584                     }
 585                     break;
 586                 }
 587             }
 588             vlc_object_release( (vlc_object_t*)p_module );
 589         }
 590         else
 591         {
 592             p_main_module = module_get_main( p_intf );
 593             assert( p_main_module );
 594             module_config_t *p_items;
 595
 596             unsigned int i, confsize;
 597             p_items = module_config_get( p_main_module, &confsize );
 598
 599             /* We need to first, find the right (sub)category,
 600              * and then abort when we find a new (sub)category. Part of the Ugliness. */
 601             bool in_right_category = false;
 602             bool in_subcategory = false;
 603             bool done = false;
 604             for( i = 0; i < confsize; i++ )
 605             {
 606                 if( !p_items[i].i_type )
 607                 {
 608                     msg_Err( p_intf, "invalid preference item found" );
 609                     break;
 610                 }
 611
 612                 switch( p_items[i].i_type )
 613                 {
 614                     case CONFIG_CATEGORY:
 615                         if(!in_right_category && p_items[i].value.i == i_object_category)
 616                             in_right_category = true;
 617                         else if(in_right_category)
 618                             done = true;
 619                         break;
 620                     case CONFIG_SUBCATEGORY:
 621                         if(!in_right_category && p_items[i].value.i == i_object_category)
 622                         {
 623                             in_right_category = true;
 624                             in_subcategory = true;
 625                         }
 626                         else if(in_right_category && in_subcategory)
 627                             done = true;
 628                         break;
 629                     case CONFIG_SECTION:
 630                     case CONFIG_HINT_USAGE:
 631                         break;
 632                     default:
 633                     {
 634                         if(!in_right_category) break;
 635
 636                         VLCConfigControl *o_control = nil;
 637                         o_control = [VLCConfigControl newControl:&p_items[i]
 638                                                       withView:o_view];
 639                         if( o_control != nil )
 640                         {
 641                             [o_control setAutoresizingMask: NSViewMaxYMargin |
 642                                                             NSViewWidthSizable];
 643                             [o_subviews addObject: o_control];
 644                         }
 645                         break;
 646                     }
 647                 }
 648                 if( done ) break;
 649             }
 650             vlc_object_release( (vlc_object_t*)p_main_module );
 651         }
 652     }
 653
 654     if( o_view != nil )
 655     {
 656         int i_lastItem = 0;
 657         int i_yPos = -2;
 658         int i_max_label = 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( i_max_label < [o_widget getLabelSize] )
 666                 i_max_label = [o_widget getLabelSize];
 667
 668         enumerator = [o_subviews objectEnumerator];
 669         while( ( o_widget = [enumerator nextObject] ) )
 670         {
 671             int i_widget;
 672
 673             i_widget = [o_widget getViewType];
 674             i_yPos += [VLCConfigControl calcVerticalMargin:i_widget
 675                 lastItem:i_lastItem];
 676             [o_widget setYPos:i_yPos];
 677             o_frame = [o_widget frame];
 678             o_frame.size.width = [o_view frame].size.width -
 679                                     LEFTMARGIN - RIGHTMARGIN;
 680             [o_widget setFrame:o_frame];
 681             [o_widget alignWithXPosition: i_max_label];
 682             i_yPos += [o_widget frame].size.height;
 683             i_lastItem = i_widget;
 684             [o_view addSubview:o_widget];
 685          }
 686
 687         o_frame = [o_view frame];
 688         o_frame.size.height = i_yPos;
 689         [o_view setFrame:o_frame];
 690         [o_prefs_view setDocumentView:o_view];
 691
 692     }
 693     return o_view;
 694 }
 695
 696 - (void)applyChanges
 697 {
 698     unsigned int i;
 699     if( o_subviews != nil )
 700         //Item has been shown
 701         for( i = 0 ; i < [o_subviews count] ; i++ )
 702             [[o_subviews objectAtIndex:i] applyChanges];
 703
 704     if( o_children != IsALeafNode )
 705         for( i = 0 ; i < [o_children count] ; i++ )
 706             [[o_children objectAtIndex:i] applyChanges];
 707 }
 708
 709 - (void)resetView
 710 {
 711     unsigned int i;
 712     if( o_subviews != nil )
 713     {
 714         //Item has been shown
 715         [o_subviews release];
 716         o_subviews = nil;
 717     }
 718
 719     if( o_children != IsALeafNode )
 720         for( i = 0 ; i < [o_children count] ; i++ )
 721             [[o_children objectAtIndex:i] resetView];
 722 }
 723
 724 @end
 725
 726
 727 @implementation VLCFlippedView
 728
 729 - (BOOL)isFlipped
 730 {
 731     return( YES );
 732 }
 733
 734 @end