modules/gui/qt4/components/playlist/playlist_model.cpp

   1 /*****************************************************************************
   2  * playlist_model.cpp : Manage playlist model
   3  ****************************************************************************
   4  * Copyright (C) 2006-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          Ilkka Ollakkka <ileoo (at) videolan dot org>
   9  *          Jakob Leben <jleben@videolan.org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include "qt4.hpp"
  31 #include "dialogs_provider.hpp"
  32 #include "components/playlist/playlist_model.hpp"
  33 #include "dialogs/mediainfo.hpp"
  34 #include "dialogs/playlist.hpp"
  35 #include <vlc_intf_strings.h>
  36
  37 #include "pixmaps/types/type_unknown.xpm"
  38
  39 #include <assert.h>
  40 #include <QIcon>
  41 #include <QFont>
  42 #include <QMenu>
  43 #include <QApplication>
  44 #include <QSettings>
  45
  46 #include "sorting.h"
  47
  48 QIcon PLModel::icons[ITEM_TYPE_NUMBER];
  49
  50 /*************************************************************************
  51  * Playlist model implementation
  52  *************************************************************************/
  53
  54 /*
  55   This model is called two times, for the selector and the standard panel
  56 */
  57 PLModel::PLModel( playlist_t *_p_playlist,  /* THEPL */
  58                   intf_thread_t *_p_intf,   /* main Qt p_intf */
  59                   playlist_item_t * p_root,
  60                   /*playlist_GetPreferredNode( THEPL, THEPL->p_local_category );
  61                     and THEPL->p_root_category for SelectPL */
  62                   QObject *parent )         /* Basic Qt parent */
  63                   : QAbstractItemModel( parent )
  64 {
  65     p_intf            = _p_intf;
  66     p_playlist        = _p_playlist;
  67     i_cached_id       = -1;
  68     i_cached_input_id = -1;
  69     i_popup_item      = i_popup_parent = -1;
  70     currentItem       = NULL;
  71
  72     rootItem          = NULL; /* PLItem rootItem, will be set in rebuild( ) */
  73
  74     /* Icons initialization */
  75 #define ADD_ICON(type, x) icons[ITEM_TYPE_##type] = QIcon( x )
  76     ADD_ICON( UNKNOWN , type_unknown_xpm );
  77     ADD_ICON( FILE, ":/type/file" );
  78     ADD_ICON( DIRECTORY, ":/type/directory" );
  79     ADD_ICON( DISC, ":/type/disc" );
  80     ADD_ICON( CDDA, ":/type/cdda" );
  81     ADD_ICON( CARD, ":/type/capture-card" );
  82     ADD_ICON( NET, ":/type/net" );
  83     ADD_ICON( PLAYLIST, ":/type/playlist" );
  84     ADD_ICON( NODE, ":/type/node" );
  85 #undef ADD_ICON
  86
  87     rebuild( p_root, true );
  88     CONNECT( THEMIM->getIM(), metaChanged( input_item_t *),
  89             this, processInputItemUpdate( input_item_t *) );
  90     CONNECT( THEMIM, inputChanged( input_thread_t * ),
  91             this, processInputItemUpdate( input_thread_t* ) );
  92     CONNECT( THEMIM, playlistItemAppended( int, int ),
  93              this, processItemAppend( int, int ) );
  94     CONNECT( THEMIM, playlistItemRemoved( int ),
  95              this, processItemRemoval( int ) );
  96 }
  97
  98 PLModel::~PLModel()
  99 {
 100     delete rootItem;
 101 }
 102
 103 Qt::DropActions PLModel::supportedDropActions() const
 104 {
 105     return Qt::CopyAction; /* Why not Qt::MoveAction */
 106 }
 107
 108 Qt::ItemFlags PLModel::flags( const QModelIndex &index ) const
 109 {
 110     Qt::ItemFlags flags = QAbstractItemModel::flags( index );
 111
 112     PLItem *item = index.isValid() ? getItem( index ) : rootItem;
 113
 114     if( canEdit() )
 115     {
 116         PL_LOCK;
 117         playlist_item_t *plItem =
 118             playlist_ItemGetById( p_playlist, item->i_id );
 119
 120         if ( plItem && ( plItem->i_children > -1 ) )
 121             flags |= Qt::ItemIsDropEnabled;
 122
 123         PL_UNLOCK;
 124
 125     }
 126     flags |= Qt::ItemIsDragEnabled;
 127
 128     return flags;
 129 }
 130
 131 QStringList PLModel::mimeTypes() const
 132 {
 133     QStringList types;
 134     types << "vlc/qt-playlist-item";
 135     return types;
 136 }
 137
 138 QMimeData *PLModel::mimeData( const QModelIndexList &indexes ) const
 139 {
 140     QMimeData *mimeData = new QMimeData();
 141     QByteArray encodedData;
 142     QDataStream stream( &encodedData, QIODevice::WriteOnly );
 143     QModelIndexList list;
 144
 145     foreach( const QModelIndex &index, indexes ) {
 146         if( index.isValid() && index.column() == 0 )
 147             list.append(index);
 148     }
 149
 150     qSort(list);
 151
 152     foreach( const QModelIndex &index, list ) {
 153         PLItem *item = getItem( index );
 154         stream.writeRawData( (char*) &item, sizeof( PLItem* ) );
 155     }
 156     mimeData->setData( "vlc/qt-playlist-item", encodedData );
 157     return mimeData;
 158 }
 159
 160 /* Drop operation */
 161 bool PLModel::dropMimeData( const QMimeData *data, Qt::DropAction action,
 162                            int row, int column, const QModelIndex &parent )
 163 {
 164     if( data->hasFormat( "vlc/qt-playlist-item" ) )
 165     {
 166         if( action == Qt::IgnoreAction )
 167             return true;
 168
 169         PLItem *parentItem = parent.isValid() ? getItem( parent ) : rootItem;
 170
 171         PL_LOCK;
 172         playlist_item_t *p_parent =
 173             playlist_ItemGetById( p_playlist, parentItem->i_id );
 174         if( !p_parent || p_parent->i_children == -1 )
 175         {
 176             PL_UNLOCK;
 177             return false;
 178         }
 179
 180         bool copy = false;
 181         playlist_item_t *p_pl = p_playlist->p_local_category;
 182         playlist_item_t *p_ml = p_playlist->p_ml_category;
 183         if
 184         (
 185             row == -1 && (
 186             ( p_pl && p_parent->p_input == p_pl->p_input ) ||
 187             ( p_ml && p_parent->p_input == p_ml->p_input ) )
 188         )
 189             copy = true;
 190         PL_UNLOCK;
 191
 192         QByteArray encodedData = data->data( "vlc/qt-playlist-item" );
 193         if( copy )
 194             dropAppendCopy( encodedData, parentItem );
 195         else
 196             dropMove( encodedData, parentItem, row );
 197     }
 198     return true;
 199 }
 200
 201 void PLModel::dropAppendCopy( QByteArray& data, PLItem *target )
 202 {
 203     QDataStream stream( &data, QIODevice::ReadOnly );
 204
 205     PL_LOCK;
 206     playlist_item_t *p_parent =
 207             playlist_ItemGetById( p_playlist, target->i_id );
 208     while( !stream.atEnd() )
 209     {
 210         PLItem *item;
 211         stream.readRawData( (char*)&item, sizeof(PLItem*) );
 212         playlist_item_t *p_item = playlist_ItemGetById( p_playlist, item->i_id );
 213         if( !p_item ) continue;
 214         input_item_t *p_input = p_item->p_input;
 215         playlist_AddExt ( p_playlist,
 216             p_input->psz_uri, p_input->psz_name,
 217             PLAYLIST_APPEND | PLAYLIST_SPREPARSE, PLAYLIST_END,
 218             p_input->i_duration,
 219             p_input->i_options, p_input->ppsz_options, p_input->optflagc,
 220             ( p_parent == p_playlist->p_local_category ||
 221             p_parent == p_playlist->p_local_onelevel ),
 222             true );
 223     }
 224     PL_UNLOCK;
 225 }
 226
 227 void PLModel::dropMove( QByteArray& data, PLItem *target, int row )
 228 {
 229     QDataStream stream( &data, QIODevice::ReadOnly );
 230     QList<PLItem*> model_items;
 231     QList<int> ids;
 232     int new_pos = row == -1 ? target->children.size() : row;
 233     int model_pos = new_pos;
 234     while( !stream.atEnd() )
 235     {
 236         PLItem *item;
 237         stream.readRawData( (char*)&item, sizeof(PLItem*) );
 238
 239         /* better not try to move a node into itself: */
 240         PLItem *climber = target;
 241         while( climber )
 242         {
 243             if( climber == item ) break;
 244             climber = climber->parentItem;
 245         }
 246         if( climber ) continue;
 247
 248         if( item->parentItem == target &&
 249             target->children.indexOf( item ) < model_pos )
 250                 model_pos--;
 251
 252         ids.append( item->i_id );
 253         model_items.append( item );
 254
 255         takeItem( item );
 256     }
 257     int count = ids.size();
 258     if( count )
 259     {
 260         playlist_item_t *pp_items[count];
 261
 262         PL_LOCK;
 263         for( int i = 0; i < count; i++ )
 264         {
 265             playlist_item_t *p_item = playlist_ItemGetById( p_playlist, ids[i] );
 266             if( !p_item )
 267             {
 268                 PL_UNLOCK;
 269                 return;
 270             }
 271             pp_items[i] = p_item;
 272         }
 273         playlist_item_t *p_parent =
 274             playlist_ItemGetById( p_playlist, target->i_id );
 275         playlist_TreeMoveMany( p_playlist, count, pp_items, p_parent,
 276             new_pos );
 277         PL_UNLOCK;
 278
 279         insertChildren( target, model_items, model_pos );
 280     }
 281 }
 282
 283 /* remove item with its id */
 284 void PLModel::removeItem( int i_id )
 285 {
 286     PLItem *item = findById( rootItem, i_id );
 287     removeItem( item );
 288 }
 289
 290 void PLModel::activateItem( const QModelIndex &index )
 291 {
 292     assert( index.isValid() );
 293     PLItem *item = getItem( index );
 294     assert( item );
 295     PL_LOCK;
 296     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, item->i_id );
 297     activateItem( p_item );
 298     PL_UNLOCK;
 299 }
 300
 301 /* Must be entered with lock */
 302 void PLModel::activateItem( playlist_item_t *p_item )
 303 {
 304     if( !p_item ) return;
 305     playlist_item_t *p_parent = p_item;
 306     while( p_parent )
 307     {
 308         if( p_parent->i_id == rootItem->i_id ) break;
 309         p_parent = p_parent->p_parent;
 310     }
 311     if( p_parent )
 312         playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, pl_Locked,
 313                           p_parent, p_item );
 314 }
 315
 316 /****************** Base model mandatory implementations *****************/
 317 QVariant PLModel::data( const QModelIndex &index, int role ) const
 318 {
 319     if( !index.isValid() ) return QVariant();
 320     PLItem *item = getItem( index );
 321     if( role == Qt::DisplayRole )
 322     {
 323         int metadata = columnToMeta( index.column() );
 324         if( metadata == COLUMN_END ) return QVariant();
 325
 326         QString returninfo;
 327         if( metadata == COLUMN_NUMBER )
 328             returninfo = QString::number( index.row() + 1 );
 329         else
 330         {
 331             char *psz = psz_column_meta( item->p_input, metadata );
 332             returninfo = qfu( psz );
 333             free( psz );
 334         }
 335         return QVariant( returninfo );
 336     }
 337     else if( role == Qt::DecorationRole && index.column() == 0  )
 338     {
 339         /* Used to segfault here because i_type wasn't always initialized */
 340         return QVariant( PLModel::icons[item->p_input->i_type] );
 341     }
 342     else if( role == Qt::FontRole )
 343     {
 344         if( isCurrent( index ) )
 345         {
 346             QFont f; f.setBold( true ); return QVariant( f );
 347         }
 348     }
 349     else if( role == IsCurrentRole ) return QVariant( isCurrent( index ) );
 350     return QVariant();
 351 }
 352
 353 bool PLModel::isCurrent( const QModelIndex &index ) const
 354 {
 355     if( !currentItem ) return false;
 356     return getItem( index )->p_input == currentItem->p_input;
 357 }
 358
 359 int PLModel::itemId( const QModelIndex &index ) const
 360 {
 361     return getItem( index )->i_id;
 362 }
 363
 364 QVariant PLModel::headerData( int section, Qt::Orientation orientation,
 365                               int role ) const
 366 {
 367     if (orientation != Qt::Horizontal || role != Qt::DisplayRole)
 368         return QVariant();
 369
 370     int meta_col = columnToMeta( section );
 371
 372     if( meta_col == COLUMN_END ) return QVariant();
 373
 374     return QVariant( qfu( psz_column_title( meta_col ) ) );
 375 }
 376
 377 QModelIndex PLModel::index( int row, int column, const QModelIndex &parent )
 378                   const
 379 {
 380     PLItem *parentItem = parent.isValid() ? getItem( parent ) : rootItem;
 381
 382     PLItem *childItem = parentItem->child( row );
 383     if( childItem )
 384         return createIndex( row, column, childItem );
 385     else
 386         return QModelIndex();
 387 }
 388
 389 QModelIndex PLModel::index( int i_id, int c )
 390 {
 391   return index( findById( rootItem, i_id ), c );
 392 }
 393
 394 /* Return the index of a given item */
 395 QModelIndex PLModel::index( PLItem *item, int column ) const
 396 {
 397     if( !item ) return QModelIndex();
 398     const PLItem *parent = item->parent();
 399     if( parent )
 400         return createIndex( parent->children.lastIndexOf( item ),
 401                             column, item );
 402     return QModelIndex();
 403 }
 404
 405 QModelIndex PLModel::parent( const QModelIndex &index ) const
 406 {
 407     if( !index.isValid() ) return QModelIndex();
 408
 409     PLItem *childItem = getItem( index );
 410     if( !childItem )
 411     {
 412         msg_Err( p_playlist, "NULL CHILD" );
 413         return QModelIndex();
 414     }
 415
 416     PLItem *parentItem = childItem->parent();
 417     if( !parentItem || parentItem == rootItem ) return QModelIndex();
 418     if( !parentItem->parentItem )
 419     {
 420         msg_Err( p_playlist, "No parent parent, trying row 0 " );
 421         msg_Err( p_playlist, "----- PLEASE REPORT THIS ------" );
 422         return createIndex( 0, 0, parentItem );
 423     }
 424     QModelIndex ind = createIndex(parentItem->row(), 0, parentItem);
 425     return ind;
 426 }
 427
 428 int PLModel::columnCount( const QModelIndex &i) const
 429 {
 430     return columnFromMeta( COLUMN_END );
 431 }
 432
 433 int PLModel::rowCount( const QModelIndex &parent ) const
 434 {
 435     PLItem *parentItem = parent.isValid() ? getItem( parent ) : rootItem;
 436     return parentItem->childCount();
 437 }
 438
 439 QStringList PLModel::selectedURIs()
 440 {
 441     QStringList lst;
 442     for( int i = 0; i < current_selection.size(); i++ )
 443     {
 444         PLItem *item = getItem( current_selection[i] );
 445         if( item )
 446         {
 447             PL_LOCK;
 448             playlist_item_t *p_item = playlist_ItemGetById( p_playlist, item->i_id );
 449             if( p_item )
 450             {
 451                 char *psz = input_item_GetURI( p_item->p_input );
 452                 if( psz )
 453                 {
 454                     lst.append( qfu(psz) );
 455                     free( psz );
 456                 }
 457             }
 458             PL_UNLOCK;
 459         }
 460     }
 461     return lst;
 462 }
 463
 464
 465 /************************* Lookups *****************************/
 466
 467 PLItem *PLModel::findById( PLItem *root, int i_id )
 468 {
 469     return findInner( root, i_id, false );
 470 }
 471
 472 PLItem *PLModel::findByInput( PLItem *root, int i_id )
 473 {
 474     PLItem *result = findInner( root, i_id, true );
 475     return result;
 476 }
 477
 478 #define CACHE( i, p ) { i_cached_id = i; p_cached_item = p; }
 479 #define ICACHE( i, p ) { i_cached_input_id = i; p_cached_item_bi = p; }
 480
 481 PLItem * PLModel::findInner( PLItem *root, int i_id, bool b_input )
 482 {
 483     if( !root ) return NULL;
 484     if( ( !b_input && i_cached_id == i_id) ||
 485         ( b_input && i_cached_input_id ==i_id ) )
 486     {
 487         return b_input ? p_cached_item_bi : p_cached_item;
 488     }
 489
 490     if( !b_input && root->i_id == i_id )
 491     {
 492         CACHE( i_id, root );
 493         return root;
 494     }
 495     else if( b_input && root->p_input->i_id == i_id )
 496     {
 497         ICACHE( i_id, root );
 498         return root;
 499     }
 500
 501     QList<PLItem *>::iterator it = root->children.begin();
 502     while ( it != root->children.end() )
 503     {
 504         if( !b_input && (*it)->i_id == i_id )
 505         {
 506             CACHE( i_id, (*it) );
 507             return p_cached_item;
 508         }
 509         else if( b_input && (*it)->p_input->i_id == i_id )
 510         {
 511             ICACHE( i_id, (*it) );
 512             return p_cached_item_bi;
 513         }
 514         if( (*it)->children.size() )
 515         {
 516             PLItem *childFound = findInner( (*it), i_id, b_input );
 517             if( childFound )
 518             {
 519                 if( b_input )
 520                     ICACHE( i_id, childFound )
 521                 else
 522                     CACHE( i_id, childFound )
 523                 return childFound;
 524             }
 525         }
 526         it++;
 527     }
 528     return NULL;
 529 }
 530 #undef CACHE
 531 #undef ICACHE
 532
 533 int PLModel::columnToMeta( int _column ) const
 534 {
 535     int meta = 1;
 536     int column = 0;
 537
 538     while( column != _column && meta != COLUMN_END )
 539     {
 540         meta <<= 1;
 541         column++;
 542     }
 543
 544     return meta;
 545 }
 546
 547 int PLModel::columnFromMeta( int meta_col ) const
 548 {
 549     int meta = 1;
 550     int column = 0;
 551
 552     while( meta != meta_col && meta != COLUMN_END )
 553     {
 554         meta <<= 1;
 555         column++;
 556     }
 557
 558     return column;
 559 }
 560
 561 bool PLModel::canEdit() const
 562 {
 563   return (
 564     rootItem != NULL &&
 565     (
 566       rootItem->p_input == p_playlist->p_local_category->p_input ||
 567       (
 568         p_playlist->p_ml_category &&
 569         rootItem->p_input == p_playlist->p_ml_category->p_input
 570       )
 571     )
 572   );
 573 }
 574 /************************* Updates handling *****************************/
 575
 576 /**** Events processing ****/
 577 void PLModel::processInputItemUpdate( input_thread_t *p_input )
 578 {
 579     if( !p_input ) return;
 580     if( p_input && !( p_input->b_dead || !vlc_object_alive( p_input ) ) )
 581     {
 582         PLItem *item = findByInput( rootItem, input_GetItem( p_input )->i_id );
 583         currentItem = item;
 584         emit currentChanged( index( item, 0 ) );
 585     }
 586     else
 587     {
 588         currentItem = NULL;
 589     }
 590     processInputItemUpdate( input_GetItem( p_input ) );
 591 }
 592
 593 void PLModel::processInputItemUpdate( input_item_t *p_item )
 594 {
 595     if( !p_item ||  p_item->i_id <= 0 ) return;
 596     PLItem *item = findByInput( rootItem, p_item->i_id );
 597     if( item )
 598         updateTreeItem( item );
 599 }
 600
 601 void PLModel::processItemRemoval( int i_id )
 602 {
 603     if( i_id <= 0 ) return;
 604     removeItem( i_id );
 605 }
 606
 607 void PLModel::processItemAppend( int i_item, int i_parent )
 608 {
 609     playlist_item_t *p_item = NULL;
 610     PLItem *newItem = NULL;
 611     input_thread_t *currentInputThread;
 612     int pos;
 613
 614     PLItem *nodeItem = findById( rootItem, i_parent );
 615     if( !nodeItem ) return;
 616
 617     foreach( PLItem *existing, nodeItem->children )
 618       if( existing->i_id == i_item ) return;
 619
 620     PL_LOCK;
 621     p_item = playlist_ItemGetById( p_playlist, i_item );
 622     if( !p_item || p_item->i_flags & PLAYLIST_DBL_FLAG ) goto end;
 623
 624     for( pos = 0; pos < p_item->p_parent->i_children; pos++ )
 625         if( p_item->p_parent->pp_children[pos] == p_item ) break;
 626
 627     newItem = new PLItem( p_item, nodeItem );
 628     PL_UNLOCK;
 629
 630     currentInputThread = THEMIM->getInput();
 631     if( currentInputThread &&
 632         newItem->p_input == input_GetItem( currentInputThread ) )
 633             currentItem = newItem;
 634
 635     beginInsertRows( index( nodeItem, 0 ), pos, pos );
 636     nodeItem->insertChild( newItem, pos );
 637     endInsertRows();
 638
 639     if( currentItem == newItem )
 640       emit currentChanged( index( newItem, 0 ) );
 641
 642     return;
 643 end:
 644     PL_UNLOCK;
 645     return;
 646 }
 647
 648
 649 void PLModel::rebuild()
 650 {
 651     rebuild( NULL, false );
 652 }
 653
 654 void PLModel::rebuild( playlist_item_t *p_root, bool b_first )
 655 {
 656     playlist_item_t* p_item;
 657
 658     /* Invalidate cache */
 659     i_cached_id = i_cached_input_id = -1;
 660
 661     if( rootItem ) rootItem->removeChildren();
 662
 663     PL_LOCK;
 664     if( p_root )
 665     {
 666         delete rootItem;
 667         rootItem = new PLItem( p_root );
 668     }
 669     assert( rootItem );
 670     /* Recreate from root */
 671     updateChildren( rootItem );
 672     PL_UNLOCK;
 673
 674     /* And signal the view */
 675     reset();
 676 }
 677
 678 void PLModel::takeItem( PLItem *item )
 679 {
 680     assert( item );
 681     PLItem *parent = item->parentItem;
 682     assert( parent );
 683     int i_index = parent->children.indexOf( item );
 684
 685     beginRemoveRows( index( parent, 0 ), i_index, i_index );
 686     parent->takeChildAt( i_index );
 687     endRemoveRows();
 688 }
 689
 690 void PLModel::insertChildren( PLItem *node, QList<PLItem*>& items, int i_pos )
 691 {
 692     assert( node );
 693     int count = items.size();
 694     if( !count ) return;
 695     beginInsertRows( index( node, 0 ), i_pos, i_pos + count - 1 );
 696     for( int i = 0; i < count; i++ )
 697     {
 698         node->children.insert( i_pos + i, items[i] );
 699         items[i]->parentItem = node;
 700     }
 701     endInsertRows();
 702 }
 703
 704 void PLModel::removeItem( PLItem *item )
 705 {
 706     if( !item ) return;
 707
 708     if( item->i_id == i_cached_id ) i_cached_id = -1;
 709     i_cached_input_id = -1;
 710
 711     if( currentItem == item || rootItem == item)
 712     {
 713         currentItem = NULL;
 714         emit currentChanged( QModelIndex() );
 715     }
 716
 717     if(item == rootItem)
 718         rootItem = NULL;
 719
 720     if( item->parentItem ) {
 721         int i = item->parentItem->children.indexOf( item );
 722         beginRemoveRows( index( item->parentItem, 0), i, i );
 723         item->parentItem->children.removeAt(i);
 724         delete item;
 725         endRemoveRows();
 726     }
 727     else delete item;
 728
 729 }
 730
 731 /* This function must be entered WITH the playlist lock */
 732 void PLModel::updateChildren( PLItem *root )
 733 {
 734     playlist_item_t *p_node = playlist_ItemGetById( p_playlist, root->i_id );
 735     currentItem = NULL;
 736     updateChildren( p_node, root );
 737     emit currentChanged( index( currentItem, 0 ) );
 738 }
 739
 740 /* This function must be entered WITH the playlist lock */
 741 void PLModel::updateChildren( playlist_item_t *p_node, PLItem *root )
 742 {
 743     playlist_item_t *p_item = playlist_CurrentPlayingItem(p_playlist);
 744     for( int i = 0; i < p_node->i_children ; i++ )
 745     {
 746         if( p_node->pp_children[i]->i_flags & PLAYLIST_DBL_FLAG ) continue;
 747         PLItem *newItem =  new PLItem( p_node->pp_children[i], root );
 748         root->appendChild( newItem );
 749         if( p_item && newItem->p_input == p_item->p_input )
 750         {
 751             currentItem = newItem;
 752         }
 753         if( p_node->pp_children[i]->i_children != -1 )
 754             updateChildren( p_node->pp_children[i], newItem );
 755     }
 756 }
 757
 758 /* Function doesn't need playlist-lock, as we don't touch playlist_item_t stuff here*/
 759 void PLModel::updateTreeItem( PLItem *item )
 760 {
 761     if( !item ) return;
 762     emit dataChanged( index( item, 0 ) , index( item, columnCount( QModelIndex() ) ) );
 763 }
 764
 765 /************************* Actions ******************************/
 766
 767 /**
 768  * Deletion, here we have to do a ugly slow hack as we retrieve the full
 769  * list of indexes to delete at once: when we delete a node and all of
 770  * its children, we need to update the list.
 771  * Todo: investigate whethere we can use ranges to be sure to delete all items?
 772  */
 773 void PLModel::doDelete( QModelIndexList selected )
 774 {
 775     if( !canEdit() ) return;
 776
 777     for( int i = selected.size() -1 ; i >= 0; i-- )
 778     {
 779         QModelIndex index = selected[i];
 780         if( index.column() != 0 ) continue;
 781         PLItem *item = getItem( index );
 782         if( item )
 783         {
 784             if( item->children.size() )
 785                 recurseDelete( item->children, &selected );
 786             doDeleteItem( item, &selected );
 787         }
 788         if( i > selected.size() ) i = selected.size();
 789     }
 790 }
 791
 792 void PLModel::recurseDelete( QList<PLItem*> children, QModelIndexList *fullList )
 793 {
 794     for( int i = children.size() - 1; i >= 0 ; i-- )
 795     {
 796         PLItem *item = children[i];
 797         if( item->children.size() )
 798             recurseDelete( item->children, fullList );
 799         doDeleteItem( item, fullList );
 800     }
 801 }
 802
 803 void PLModel::doDeleteItem( PLItem *item, QModelIndexList *fullList )
 804 {
 805     QModelIndex deleteIndex = index( item, 0 );
 806     fullList->removeAll( deleteIndex );
 807
 808     PL_LOCK;
 809     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, item->i_id );
 810     if( !p_item )
 811     {
 812         PL_UNLOCK;
 813         return;
 814     }
 815     playlist_DeleteFromInput( p_playlist, p_item->p_input, pl_Locked );
 816     PL_UNLOCK;
 817
 818     /* And finally, remove it from the tree */
 819     removeItem( item );
 820 }
 821
 822 /******* Volume III: Sorting and searching ********/
 823 void PLModel::sort( int column, Qt::SortOrder order )
 824 {
 825     sort( rootItem->i_id, column, order );
 826 }
 827
 828 void PLModel::sort( int i_root_id, int column, Qt::SortOrder order )
 829 {
 830     msg_Dbg( p_intf, "Sorting by column %i, order %i", column, order );
 831
 832     int meta = columnToMeta( column );
 833     if( meta == COLUMN_END ) return;
 834
 835     PLItem *item = findById( rootItem, i_root_id );
 836     if( !item ) return;
 837     QModelIndex qIndex = index( item, 0 );
 838     int count = item->children.size();
 839     if( count )
 840     {
 841         beginRemoveRows( qIndex, 0, count - 1 );
 842         item->removeChildren();
 843         endRemoveRows( );
 844     }
 845
 846     PL_LOCK;
 847     {
 848         playlist_item_t *p_root = playlist_ItemGetById( p_playlist,
 849                                                         i_root_id );
 850         if( p_root )
 851         {
 852             playlist_RecursiveNodeSort( p_playlist, p_root,
 853                                         i_column_sorting( meta ),
 854                                         order == Qt::AscendingOrder ?
 855                                             ORDER_NORMAL : ORDER_REVERSE );
 856         }
 857     }
 858
 859     i_cached_id = i_cached_input_id = -1;
 860
 861     if( count )
 862     {
 863         beginInsertRows( qIndex, 0, count - 1 );
 864         updateChildren( item );
 865         endInsertRows( );
 866     }
 867     PL_UNLOCK;
 868 }
 869
 870 void PLModel::search( const QString& search_text )
 871 {
 872     /** \todo Fire the search with a small delay ? */
 873     PL_LOCK;
 874     {
 875         playlist_item_t *p_root = playlist_ItemGetById( p_playlist,
 876                                                         rootItem->i_id );
 877         assert( p_root );
 878         const char *psz_name = search_text.toUtf8().data();
 879         playlist_LiveSearchUpdate( p_playlist , p_root, psz_name );
 880     }
 881     PL_UNLOCK;
 882     rebuild();
 883 }
 884
 885 /*********** Popup *********/
 886 void PLModel::popup( const QModelIndex & index, const QPoint &point, const QModelIndexList &list )
 887 {
 888     int i_id = index.isValid() ? itemId( index ) : rootItem->i_id;
 889
 890     PL_LOCK;
 891     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
 892     if( !p_item )
 893     {
 894         PL_UNLOCK; return;
 895     }
 896     i_popup_item = index.isValid() ? p_item->i_id : -1;
 897     i_popup_parent = index.isValid() ?
 898         ( p_item->p_parent ? p_item->p_parent->i_id : -1 ) :
 899         ( p_item->i_id );
 900     i_popup_column = index.column();
 901     /* check whether we are in tree view */
 902     bool tree = false;
 903     playlist_item_t *p_up = p_item;
 904     while( p_up )
 905     {
 906         if ( p_up == p_playlist->p_root_category ) tree = true;
 907         p_up = p_up->p_parent;
 908     }
 909     PL_UNLOCK;
 910
 911     current_selection = list;
 912
 913     QMenu menu;
 914     if( i_popup_item > -1 )
 915     {
 916         menu.addAction( qtr(I_POP_PLAY), this, SLOT( popupPlay() ) );
 917         menu.addAction( qtr(I_POP_DEL), this, SLOT( popupDel() ) );
 918         menu.addSeparator();
 919         menu.addAction( qtr(I_POP_STREAM), this, SLOT( popupStream() ) );
 920         menu.addAction( qtr(I_POP_SAVE), this, SLOT( popupSave() ) );
 921         menu.addSeparator();
 922         menu.addAction( qtr(I_POP_INFO), this, SLOT( popupInfo() ) );
 923         menu.addSeparator();
 924         QMenu *sort_menu = menu.addMenu( qtr( "Sort by ") +
 925             qfu( psz_column_title( columnToMeta( index.column() ) ) ) );
 926         sort_menu->addAction( qtr( "Ascending" ),
 927             this, SLOT( popupSortAsc() ) );
 928         sort_menu->addAction( qtr( "Descending" ),
 929             this, SLOT( popupSortDesc() ) );
 930     }
 931     if( tree && canEdit() )
 932         menu.addAction( qtr(I_POP_ADD), this, SLOT( popupAddNode() ) );
 933     if( i_popup_item > -1 )
 934     {
 935         menu.addSeparator();
 936         menu.addAction( qtr( I_POP_EXPLORE ), this, SLOT( popupExplore() ) );
 937     }
 938     if( !menu.isEmpty() ) menu.exec( point );
 939 }
 940
 941 void PLModel::popupDel()
 942 {
 943     doDelete( current_selection );
 944 }
 945
 946 void PLModel::popupPlay()
 947 {
 948     PL_LOCK;
 949     {
 950         playlist_item_t *p_item = playlist_ItemGetById( p_playlist,
 951                                                         i_popup_item );
 952         activateItem( p_item );
 953     }
 954     PL_UNLOCK;
 955 }
 956
 957 void PLModel::popupInfo()
 958 {
 959     PL_LOCK;
 960     playlist_item_t *p_item = playlist_ItemGetById( p_playlist,
 961                                                     i_popup_item );
 962     if( p_item )
 963     {
 964         input_item_t* p_input = p_item->p_input;
 965         vlc_gc_incref( p_input );
 966         PL_UNLOCK;
 967         MediaInfoDialog *mid = new MediaInfoDialog( p_intf, p_input );
 968         vlc_gc_decref( p_input );
 969         mid->setParent( PlaylistDialog::getInstance( p_intf ),
 970                         Qt::Dialog );
 971         mid->show();
 972     } else
 973         PL_UNLOCK;
 974 }
 975
 976 void PLModel::popupStream()
 977 {
 978     QStringList mrls = selectedURIs();
 979     if( !mrls.isEmpty() )
 980         THEDP->streamingDialog( NULL, mrls[0], false );
 981
 982 }
 983
 984 void PLModel::popupSave()
 985 {
 986     QStringList mrls = selectedURIs();
 987     if( !mrls.isEmpty() )
 988         THEDP->streamingDialog( NULL, mrls[0] );
 989 }
 990
 991 #include <QUrl>
 992 #include <QFileInfo>
 993 #include <QDesktopServices>
 994 void PLModel::popupExplore()
 995 {
 996     PL_LOCK;
 997     playlist_item_t *p_item = playlist_ItemGetById( p_playlist,
 998                                                     i_popup_item );
 999     if( p_item )
1000     {
1001        input_item_t *p_input = p_item->p_input;
1002        char *psz_meta = input_item_GetURI( p_input );
1003        PL_UNLOCK;
1004        if( psz_meta )
1005        {
1006            const char *psz_access;
1007            const char *psz_demux;
1008            char  *psz_path;
1009            input_SplitMRL( &psz_access, &psz_demux, &psz_path, psz_meta );
1010
1011            if( EMPTY_STR( psz_access ) ||
1012                !strncasecmp( psz_access, "file", 4 ) ||
1013                !strncasecmp( psz_access, "dire", 4 ) )
1014            {
1015                QFileInfo info( qfu( psz_meta ) );
1016                QDesktopServices::openUrl(
1017                                QUrl::fromLocalFile( info.absolutePath() ) );
1018            }
1019            free( psz_meta );
1020        }
1021     }
1022     else
1023         PL_UNLOCK;
1024 }
1025
1026 #include <QInputDialog>
1027 void PLModel::popupAddNode()
1028 {
1029     bool ok;
1030     QString name = QInputDialog::getText( PlaylistDialog::getInstance( p_intf ),
1031         qtr( I_POP_ADD ), qtr( "Enter name for new node:" ),
1032         QLineEdit::Normal, QString(), &ok);
1033     if( !ok || name.isEmpty() ) return;
1034     PL_LOCK;
1035     playlist_item_t *p_item = playlist_ItemGetById( p_playlist,
1036                                                     i_popup_parent );
1037     if( p_item )
1038     {
1039         playlist_NodeCreate( p_playlist, qtu( name ), p_item, 0, NULL );
1040     }
1041     PL_UNLOCK;
1042 }
1043
1044 void PLModel::popupSortAsc()
1045 {
1046     sort( i_popup_parent, i_popup_column, Qt::AscendingOrder );
1047 }
1048
1049 void PLModel::popupSortDesc()
1050 {
1051     sort( i_popup_parent, i_popup_column, Qt::DescendingOrder );
1052 }