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

   1 /*****************************************************************************
   2  * selector.cpp : Playlist source selector
   3  ****************************************************************************
   4  * Copyright (C) 2006-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          Jean-Baptiste Kempf
   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 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <assert.h>
  30
  31 #include "components/playlist/selector.hpp"
  32 #include "playlist_item.hpp"
  33 #include "qt4.hpp"
  34 #include "../../dialogs_provider.hpp"
  35 #include "playlist.hpp"
  36 #include "util/customwidgets.hpp"
  37
  38 #include <QVBoxLayout>
  39 #include <QHeaderView>
  40 #include <QMimeData>
  41 #include <QInputDialog>
  42 #include <QMessageBox>
  43
  44 #include <vlc_playlist.h>
  45 #include <vlc_services_discovery.h>
  46
  47 PLSelItem::PLSelItem ( QTreeWidgetItem *i, const QString& text )
  48     : qitem(i), lblAction( NULL)
  49 {
  50     layout = new QHBoxLayout();
  51     layout->setContentsMargins(0,0,0,0);
  52     layout->addSpacing( 3 );
  53
  54     lbl = new QLabel( text );
  55
  56     layout->addWidget(lbl, 1);
  57
  58     setLayout( layout );
  59
  60     setMinimumHeight( 22 ); //Action icon height plus 6
  61 }
  62
  63 void PLSelItem::addAction( ItemAction act, const QString& tooltip )
  64 {
  65     if( lblAction ) return; //might change later
  66
  67     QIcon icon;
  68
  69     switch( act )
  70     {
  71     case ADD_ACTION:
  72         icon = QIcon( ":/buttons/playlist/playlist_add" ); break;
  73     case RM_ACTION:
  74         icon = QIcon( ":/buttons/playlist/playlist_remove" ); break;
  75     }
  76
  77     lblAction = new QVLCFramelessButton();
  78     lblAction->setIcon( icon );
  79
  80     if( !tooltip.isEmpty() ) lblAction->setToolTip( tooltip );
  81
  82     layout->addWidget( lblAction, 0 );
  83     lblAction->hide();
  84     layout->addSpacing( 3 );
  85
  86     CONNECT( lblAction, clicked(), this, triggerAction() );
  87 }
  88
  89 void PLSelItem::showAction() { if( lblAction ) lblAction->show(); }
  90
  91 void PLSelItem::hideAction() { if( lblAction ) lblAction->hide(); }
  92
  93 void PLSelItem::setText( const QString& text ) { lbl->setText( text ); }
  94
  95 void PLSelItem::enterEvent( QEvent *ev ){ showAction(); }
  96
  97 void PLSelItem::leaveEvent( QEvent *ev ){ hideAction(); }
  98
  99 PLSelector::PLSelector( QWidget *p, intf_thread_t *_p_intf )
 100            : QTreeWidget( p ), p_intf(_p_intf)
 101 {
 102     setFrameStyle( QFrame::NoFrame );
 103     viewport()->setAutoFillBackground( false );
 104     setIconSize( QSize( 24,24 ) );
 105     setIndentation( 14 );
 106     header()->hide();
 107     setRootIsDecorated( true );
 108     setAlternatingRowColors( false );
 109     podcastsParent = NULL;
 110     podcastsParentId = -1;
 111
 112     viewport()->setAcceptDrops(true);
 113     setDropIndicatorShown(true);
 114     invisibleRootItem()->setFlags( invisibleRootItem()->flags() & ~Qt::ItemIsDropEnabled );
 115
 116     CONNECT( THEMIM, playlistItemAppended( int, int ),
 117              this, plItemAdded( int, int ) );
 118     CONNECT( THEMIM, playlistItemRemoved( int ),
 119              this, plItemRemoved( int ) );
 120     CONNECT( THEMIM->getIM(), metaChanged( input_item_t *),
 121             this, inputItemUpdate( input_item_t * ) );
 122
 123     createItems();
 124     CONNECT( this, itemActivated( QTreeWidgetItem *, int ),
 125              this, setSource( QTreeWidgetItem *) );
 126     CONNECT( this, itemClicked( QTreeWidgetItem *, int ),
 127              this, setSource( QTreeWidgetItem *) );
 128
 129     /* I believe this is unnecessary, seeing
 130        QStyle::SH_ItemView_ActivateItemOnSingleClick
 131         CONNECT( view, itemClicked( QTreeWidgetItem *, int ),
 132              this, setSource( QTreeWidgetItem *) ); */
 133
 134     /* select the first item */
 135 //  view->setCurrentIndex( model->index( 0, 0, QModelIndex() ) );
 136 }
 137
 138 PLSelector::~PLSelector()
 139 {
 140     if( podcastsParent )
 141     {
 142         int c = podcastsParent->childCount();
 143         for( int i = 0; i < c; i++ )
 144         {
 145             QTreeWidgetItem *item = podcastsParent->child(i);
 146             input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 147             vlc_gc_decref( p_input );
 148         }
 149     }
 150 }
 151
 152 void PLSelector::setSource( QTreeWidgetItem *item )
 153 {
 154     if( !item )
 155         return;
 156
 157     bool b_ok;
 158     int i_type = item->data( 0, TYPE_ROLE ).toInt( &b_ok );
 159     if( !b_ok || i_type == CATEGORY_TYPE )
 160         return;
 161
 162     bool sd_loaded;
 163     if( i_type == SD_TYPE )
 164     {
 165         QString qs = item->data( 0, NAME_ROLE ).toString();
 166         sd_loaded = playlist_IsServicesDiscoveryLoaded( THEPL, qtu( qs ) );
 167         if( !sd_loaded )
 168             playlist_ServicesDiscoveryAdd( THEPL, qtu( qs ) );
 169     }
 170
 171     playlist_Lock( THEPL );
 172
 173     playlist_item_t *pl_item = NULL;
 174
 175     if( i_type == SD_TYPE )
 176     {
 177         pl_item = playlist_ChildSearchName( THEPL->p_root, qtu( item->data(0, LONGNAME_ROLE ).toString() ) );
 178         if( item->data( 0, SPECIAL_ROLE ).toInt() == IS_PODCAST )
 179         {
 180             if( pl_item && !sd_loaded )
 181             {
 182                 podcastsParentId = pl_item->i_id;
 183                 for( int i=0; i < pl_item->i_children; i++ )
 184                     addPodcastItem( pl_item->pp_children[i] );
 185             }
 186             pl_item = NULL; //to prevent activating it
 187         }
 188     }
 189     else
 190         pl_item = item->data( 0, PL_ITEM_ROLE ).value<playlist_item_t*>();
 191
 192     playlist_Unlock( THEPL );
 193
 194     if( pl_item )
 195        emit activated( pl_item );
 196 }
 197
 198 PLSelItem * PLSelector::addItem (
 199   SelectorItemType type, const QString& str, bool drop,
 200   QTreeWidgetItem* parentItem )
 201 {
 202   QTreeWidgetItem *item = parentItem ?
 203       new QTreeWidgetItem( parentItem ) : new QTreeWidgetItem( this );
 204   PLSelItem *selItem = new PLSelItem( item, str );
 205   setItemWidget( item, 0, selItem );
 206   item->setData( 0, TYPE_ROLE, (int)type );
 207   if( !drop ) item->setFlags( item->flags() & ~Qt::ItemIsDropEnabled );
 208
 209   return selItem;
 210 }
 211
 212 PLSelItem * putSDData( PLSelItem* item, const char* name, const char* longname )
 213 {
 214     item->treeItem()->setData( 0, NAME_ROLE, qfu( name ) );
 215     item->treeItem()->setData( 0, LONGNAME_ROLE, qfu( longname ) );
 216     return item;
 217 }
 218
 219 PLSelItem * putPLData( PLSelItem* item, playlist_item_t* plItem )
 220 {
 221     item->treeItem()->setData( 0, PL_ITEM_ROLE, QVariant::fromValue( plItem ) );
 222 /*    item->setData( 0, PL_ITEM_ID_ROLE, plItem->i_id );
 223     item->setData( 0, IN_ITEM_ROLE, QVariant::fromValue( (void*) plItem->p_input ) ); );*/
 224     return item;
 225 }
 226
 227 PLSelItem *PLSelector::addPodcastItem( playlist_item_t *p_item )
 228 {
 229   vlc_gc_incref( p_item->p_input );
 230   char *psz_name = input_item_GetName( p_item->p_input );
 231   PLSelItem *item = addItem(
 232       PL_ITEM_TYPE, qfu( psz_name ), false, podcastsParent );
 233   item->addAction( RM_ACTION, qtr( "Remove this podcast subscription" ) );
 234   item->treeItem()->setData( 0, PL_ITEM_ROLE, QVariant::fromValue( p_item ) );
 235   item->treeItem()->setData( 0, PL_ITEM_ID_ROLE, QVariant(p_item->i_id) );
 236   item->treeItem()->setData( 0, IN_ITEM_ROLE, QVariant::fromValue( p_item->p_input ) );
 237   CONNECT( item, action( PLSelItem* ), this, podcastRemove( PLSelItem* ) );
 238   free( psz_name );
 239   return item;
 240 }
 241
 242 void PLSelector::createItems()
 243 {
 244     PLSelItem *pl = putPLData( addItem( PL_ITEM_TYPE, qtr( "Playlist" ), true ),
 245                               THEPL->p_playing );
 246     pl->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_PL ) );
 247
 248     PLSelItem *ml = putPLData( addItem( PL_ITEM_TYPE, qtr( "Media Library" ), true ),
 249                               THEPL->p_media_library );
 250     ml->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_ML ) );
 251
 252     QTreeWidgetItem *mycomp = addItem( CATEGORY_TYPE, qtr( "My Computer" ),
 253                                         false )->treeItem();
 254     QTreeWidgetItem *devices = addItem( CATEGORY_TYPE, qtr( "Devices" ),
 255                                         false )->treeItem();
 256     QTreeWidgetItem *lan = addItem( CATEGORY_TYPE, qtr( "Local Network" ),
 257                                     false )->treeItem();
 258     QTreeWidgetItem *internet = addItem( CATEGORY_TYPE, qtr( "Internet" ),
 259                                           false )->treeItem();;
 260
 261     char **ppsz_longnames;
 262     int *p_categories;
 263     char **ppsz_names = vlc_sd_GetNames( THEPL, &ppsz_longnames, &p_categories );
 264     if( !ppsz_names )
 265         return;
 266
 267     char **ppsz_name = ppsz_names, **ppsz_longname = ppsz_longnames;
 268     int *p_category = p_categories;
 269     for( ; *ppsz_name; ppsz_name++, ppsz_longname++, p_category++ )
 270     {
 271         //msg_Dbg( p_intf, "Adding a SD item: %s", *ppsz_longname );
 272
 273         if( *p_category == SD_CAT_INTERNET )
 274         {
 275             PLSelItem *selItem = addItem( SD_TYPE, *ppsz_longname, false, internet );
 276             putSDData( selItem, *ppsz_name, *ppsz_longname );
 277             if( !strncmp( *ppsz_name, "podcast", 7 ) )
 278             {
 279                 selItem->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_PODCAST ) );
 280                 selItem->addAction( ADD_ACTION, qtr( "Subscribe to a podcast" ) );
 281                 CONNECT( selItem, action( PLSelItem* ), this, podcastAdd( PLSelItem* ) );
 282                 podcastsParent = selItem->treeItem();
 283             }
 284         }
 285         else if( *p_category == SD_CAT_DEVICES )
 286         {
 287             putSDData( addItem( SD_TYPE, *ppsz_longname, false, devices ),
 288                        *ppsz_name, *ppsz_longname );
 289         }
 290         else if( *p_category == SD_CAT_LAN )
 291         {
 292             putSDData( addItem( SD_TYPE, *ppsz_longname, false, lan ),
 293                        *ppsz_name, *ppsz_longname );
 294         }
 295         else if( *p_category == SD_CAT_MYCOMPUTER )
 296         {
 297             putSDData( addItem( SD_TYPE, *ppsz_longname, false, mycomp ),
 298                        *ppsz_name, *ppsz_longname );
 299         }
 300         else
 301         {
 302             putSDData( addItem( SD_TYPE, qtr( *ppsz_longname ), false ),
 303                        *ppsz_name, *ppsz_longname );
 304         }
 305
 306         free( *ppsz_name );
 307         free( *ppsz_longname );
 308     }
 309     free( ppsz_names );
 310     free( ppsz_longnames );
 311     free( p_categories );
 312
 313     if( mycomp->childCount() == 0 ) delete mycomp;
 314     if( devices->childCount() == 0 ) delete devices;
 315     if( lan->childCount() == 0 ) delete lan;
 316     if( internet->childCount() == 0 ) delete internet;
 317 }
 318
 319 QStringList PLSelector::mimeTypes() const
 320 {
 321     QStringList types;
 322     types << "vlc/qt-playlist-item";
 323     return types;
 324 }
 325
 326 bool PLSelector::dropMimeData ( QTreeWidgetItem * parent, int index,
 327   const QMimeData * data, Qt::DropAction action )
 328 {
 329     if( !parent ) return false;
 330
 331     QVariant type = parent->data( 0, TYPE_ROLE );
 332     if( type == QVariant() ) return false;
 333     int i_truth = parent->data( 0, SPECIAL_ROLE ).toInt();
 334
 335     if( i_truth != IS_PL && i_truth != IS_ML ) return false;
 336     bool to_pl = ( i_truth == IS_PL );
 337
 338     if( data->hasFormat( "vlc/qt-playlist-item" ) )
 339     {
 340         QByteArray encodedData = data->data( "vlc/qt-playlist-item" );
 341         QDataStream stream( &encodedData, QIODevice::ReadOnly );
 342         playlist_Lock( THEPL );
 343         while( !stream.atEnd() )
 344         {
 345             PLItem *item;
 346             stream.readRawData( (char*)&item, sizeof(PLItem*) );
 347             input_item_t *pl_input =item->inputItem();
 348             playlist_AddExt ( THEPL,
 349                 pl_input->psz_uri, pl_input->psz_name,
 350                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE, PLAYLIST_END,
 351                 pl_input->i_duration,
 352                 pl_input->i_options, pl_input->ppsz_options, pl_input->optflagc,
 353                 to_pl, true );
 354         }
 355         playlist_Unlock( THEPL );
 356     }
 357     return true;
 358 }
 359
 360 void PLSelector::plItemAdded( int item, int parent )
 361 {
 362     if( parent != podcastsParentId ) return;
 363
 364     playlist_Lock( THEPL );
 365
 366     playlist_item_t *p_item = playlist_ItemGetById( THEPL, item );
 367     if( !p_item ) {
 368         playlist_Unlock( THEPL );
 369         return;
 370     }
 371
 372     int c = podcastsParent->childCount();
 373     for( int i = 0; i < c; i++ )
 374     {
 375         QTreeWidgetItem *podItem = podcastsParent->child(i);
 376         if( podItem->data( 0, PL_ITEM_ID_ROLE ).toInt() == item )
 377         {
 378           //msg_Dbg( p_intf, "Podcast already in: (%d) %s", item, p_item->p_input->psz_uri);
 379           playlist_Unlock( THEPL );
 380           return;
 381         }
 382     }
 383
 384     //msg_Dbg( p_intf, "Adding podcast: (%d) %s", item, p_item->p_input->psz_uri );
 385     addPodcastItem( p_item );
 386
 387     playlist_Unlock( THEPL );
 388
 389     podcastsParent->setExpanded( true );
 390 }
 391
 392 void PLSelector::plItemRemoved( int id )
 393 {
 394     int c = podcastsParent->childCount();
 395     for( int i = 0; i < c; i++ )
 396     {
 397         QTreeWidgetItem *item = podcastsParent->child(i);
 398         if( item->data( 0, PL_ITEM_ID_ROLE ).toInt() == id )
 399         {
 400             input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 401             //msg_Dbg( p_intf, "Removing podcast: (%d) %s", id, p_input->psz_uri );
 402             vlc_gc_decref( p_input );
 403             delete item;
 404             return;
 405         }
 406     }
 407 }
 408
 409 void PLSelector::inputItemUpdate( input_item_t *arg )
 410 {
 411     int c = podcastsParent->childCount();
 412     for( int i = 0; i < c; i++ )
 413     {
 414         QTreeWidgetItem *item = podcastsParent->child(i);
 415         input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 416         if( p_input == arg )
 417         {
 418             PLSelItem *si = itemWidget( item );
 419             char *psz_name = input_item_GetName( p_input );
 420             si->setText( qfu( psz_name ) );
 421             free( psz_name );
 422             return;
 423         }
 424     }
 425 }
 426
 427 void PLSelector::podcastAdd( PLSelItem* item )
 428 {
 429     bool ok;
 430     QString url = QInputDialog::getText( this, qtr( "Subscribe" ),
 431                                          qtr( "Enter URL of the podcast to subscribe to:" ),
 432                                          QLineEdit::Normal, QString(), &ok );
 433     if( !ok || url.isEmpty() ) return;
 434
 435     setSource( podcastsParent ); //to load the SD in case it's not loaded
 436
 437     vlc_object_t *p_obj = (vlc_object_t*) vlc_object_find_name(
 438         p_intf->p_libvlc, "podcast", FIND_CHILD );
 439     if( !p_obj ) return;
 440
 441     QString request("ADD:");
 442     request += url;
 443     var_SetString( p_obj, "podcast-request", qtu( request ) );
 444     vlc_object_release( p_obj );
 445 }
 446
 447 void PLSelector::podcastRemove( PLSelItem* item )
 448 {
 449     //FIXME will translators know to leave that %1 somewhere inside?
 450     QString question ( qtr( "Do you really want to unsubscribe from %1?" ) );
 451     question = question.arg( item->text() );
 452     QMessageBox::StandardButton res =
 453         QMessageBox::question( this, qtr( "Unsubscribe" ), question,
 454                                QMessageBox::Ok | QMessageBox::Cancel,
 455                                QMessageBox::Cancel );
 456     if( res == QMessageBox::Cancel ) return;
 457
 458     input_item_t *input = item->treeItem()->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 459     if( !input ) return;
 460
 461     vlc_object_t *p_obj = (vlc_object_t*) vlc_object_find_name(
 462         p_intf->p_libvlc, "podcast", FIND_CHILD );
 463     if( !p_obj ) return;
 464
 465     QString request("RM:");
 466     char *psz_uri = input_item_GetURI( input );
 467     request += qfu( psz_uri );
 468     var_SetString( p_obj, "podcast-request", qtu( request ) );
 469     vlc_object_release( p_obj );
 470     free( psz_uri );
 471 }
 472
 473 PLSelItem * PLSelector::itemWidget( QTreeWidgetItem *item )
 474 {
 475     return ( static_cast<PLSelItem*>( QTreeWidget::itemWidget( item, 0 ) ) );
 476 }
 477
 478 void PLSelector::drawBranches ( QPainter * painter, const QRect & rect, const QModelIndex & index ) const
 479 {
 480     if( !model()->hasChildren( index ) ) return;
 481     QStyleOption option;
 482     option.initFrom( this );
 483     option.rect = rect.adjusted( rect.width() - indentation(), 0, 0, 0 );
 484
 485     /*option.state = QStyle::State_Children;
 486     if( isExpanded( index ) ) option.state |=  QStyle::State_Open;*/
 487     style()->drawPrimitive( isExpanded( index ) ?
 488                             QStyle::PE_IndicatorArrowDown :
 489                             QStyle::PE_IndicatorArrowRight, &option, painter );
 490 }