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 QVLCIconLabel( icon );
  78
  79     if( !tooltip.isEmpty() ) lblAction->setToolTip( tooltip );
  80
  81     layout->addWidget( lblAction, 0 );
  82     lblAction->hide();
  83     layout->addSpacing( 3 );
  84
  85     CONNECT( lblAction, clicked(), this, triggerAction() );
  86 }
  87
  88 void PLSelItem::showAction() { if( lblAction ) lblAction->show(); }
  89
  90 void PLSelItem::hideAction() { if( lblAction ) lblAction->hide(); }
  91
  92 void PLSelItem::setText( const QString& text ) { lbl->setText( text ); }
  93
  94 void PLSelItem::enterEvent( QEvent *ev ){ showAction(); }
  95
  96 void PLSelItem::leaveEvent( QEvent *ev ){ hideAction(); }
  97
  98 PLSelector::PLSelector( QWidget *p, intf_thread_t *_p_intf )
  99            : QTreeWidget( p ), p_intf(_p_intf)
 100 {
 101     setFrameStyle( QFrame::NoFrame );
 102     viewport()->setAutoFillBackground( false );
 103     setIconSize( QSize( 24,24 ) );
 104     setIndentation( 10 );
 105     header()->hide();
 106     setRootIsDecorated( false );
 107     setAlternatingRowColors( false );
 108     podcastsParent = NULL;
 109     podcastsParentId = -1;
 110
 111     viewport()->setAcceptDrops(true);
 112     setDropIndicatorShown(true);
 113     invisibleRootItem()->setFlags( invisibleRootItem()->flags() & ~Qt::ItemIsDropEnabled );
 114
 115     CONNECT( THEMIM, playlistItemAppended( int, int ),
 116              this, plItemAdded( int, int ) );
 117     CONNECT( THEMIM, playlistItemRemoved( int ),
 118              this, plItemRemoved( int ) );
 119     CONNECT( THEMIM->getIM(), metaChanged( input_item_t *),
 120             this, inputItemUpdate( input_item_t * ) );
 121
 122     createItems();
 123     CONNECT( this, itemActivated( QTreeWidgetItem *, int ),
 124              this, setSource( QTreeWidgetItem *) );
 125     CONNECT( this, itemClicked( QTreeWidgetItem *, int ),
 126              this, setSource( QTreeWidgetItem *) );
 127
 128     /* I believe this is unnecessary, seeing
 129        QStyle::SH_ItemView_ActivateItemOnSingleClick
 130         CONNECT( view, itemClicked( QTreeWidgetItem *, int ),
 131              this, setSource( QTreeWidgetItem *) ); */
 132
 133     /* select the first item */
 134 //  view->setCurrentIndex( model->index( 0, 0, QModelIndex() ) );
 135 }
 136
 137 PLSelector::~PLSelector()
 138 {
 139     if( podcastsParent )
 140     {
 141         int c = podcastsParent->childCount();
 142         for( int i = 0; i < c; i++ )
 143         {
 144             QTreeWidgetItem *item = podcastsParent->child(i);
 145             input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 146             vlc_gc_decref( p_input );
 147         }
 148     }
 149 }
 150
 151 void PLSelector::setSource( QTreeWidgetItem *item )
 152 {
 153     if( !item )
 154         return;
 155
 156     bool b_ok;
 157     int i_type = item->data( 0, TYPE_ROLE ).toInt( &b_ok );
 158     if( !b_ok || i_type == CATEGORY_TYPE )
 159         return;
 160
 161     bool sd_loaded;
 162     if( i_type == SD_TYPE )
 163     {
 164         QString qs = item->data( 0, NAME_ROLE ).toString();
 165         sd_loaded = playlist_IsServicesDiscoveryLoaded( THEPL, qtu( qs ) );
 166         if( !sd_loaded )
 167             playlist_ServicesDiscoveryAdd( THEPL, qtu( qs ) );
 168     }
 169
 170     playlist_Lock( THEPL );
 171
 172     playlist_item_t *pl_item = NULL;
 173
 174     if( i_type == SD_TYPE )
 175     {
 176         pl_item = playlist_ChildSearchName( THEPL->p_root_category, qtu( item->data(0, LONGNAME_ROLE ).toString() ) );
 177         if( item->data( 0, SPECIAL_ROLE ).toInt() == IS_PODCAST )
 178         {
 179             if( pl_item && !sd_loaded )
 180             {
 181                 podcastsParentId = pl_item->i_id;
 182                 for( int i=0; i < pl_item->i_children; i++ )
 183                     addPodcastItem( pl_item->pp_children[i] );
 184             }
 185             pl_item = NULL; //to prevent activating it
 186         }
 187     }
 188     else
 189         pl_item = item->data( 0, PL_ITEM_ROLE ).value<playlist_item_t*>();
 190
 191     playlist_Unlock( THEPL );
 192
 193     if( pl_item )
 194        emit activated( pl_item );
 195 }
 196
 197 PLSelItem * PLSelector::addItem (
 198   SelectorItemType type, const QString& str, bool drop,
 199   QTreeWidgetItem* parentItem )
 200 {
 201   QTreeWidgetItem *item = parentItem ?
 202       new QTreeWidgetItem( parentItem ) : new QTreeWidgetItem( this );
 203   PLSelItem *selItem = new PLSelItem( item, str );
 204   setItemWidget( item, 0, selItem );
 205   item->setData( 0, TYPE_ROLE, (int)type );
 206   if( !drop ) item->setFlags( item->flags() & ~Qt::ItemIsDropEnabled );
 207
 208   return selItem;
 209 }
 210
 211 PLSelItem * putSDData( PLSelItem* item, const char* name, const char* longname )
 212 {
 213     item->treeItem()->setData( 0, NAME_ROLE, qfu( name ) );
 214     item->treeItem()->setData( 0, LONGNAME_ROLE, qfu( longname ) );
 215     return item;
 216 }
 217
 218 PLSelItem * putPLData( PLSelItem* item, playlist_item_t* plItem )
 219 {
 220     item->treeItem()->setData( 0, PL_ITEM_ROLE, QVariant::fromValue( plItem ) );
 221 /*    item->setData( 0, PL_ITEM_ID_ROLE, plItem->i_id );
 222     item->setData( 0, IN_ITEM_ROLE, QVariant::fromValue( (void*) plItem->p_input ) ); );*/
 223     return item;
 224 }
 225
 226 PLSelItem *PLSelector::addPodcastItem( playlist_item_t *p_item )
 227 {
 228   vlc_gc_incref( p_item->p_input );
 229   char *psz_name = input_item_GetName( p_item->p_input );
 230   PLSelItem *item = addItem(
 231       PL_ITEM_TYPE, qfu( psz_name ), false, podcastsParent );
 232   item->addAction( RM_ACTION, qtr( "Remove this podcast subscription" ) );
 233   item->treeItem()->setData( 0, PL_ITEM_ROLE, QVariant::fromValue( p_item ) );
 234   item->treeItem()->setData( 0, PL_ITEM_ID_ROLE, QVariant(p_item->i_id) );
 235   item->treeItem()->setData( 0, IN_ITEM_ROLE, QVariant::fromValue( p_item->p_input ) );
 236   CONNECT( item, action( PLSelItem* ), this, podcastRemove( PLSelItem* ) );
 237   free( psz_name );
 238   return item;
 239 }
 240
 241 void PLSelector::createItems()
 242 {
 243     PLSelItem *pl = putPLData( addItem( PL_ITEM_TYPE, qtr( "Playlist" ), true ),
 244                               THEPL->p_local_category );
 245     pl->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_PL ) );
 246
 247     PLSelItem *ml = putPLData( addItem( PL_ITEM_TYPE, qtr( "Media Library" ), true ),
 248                               THEPL->p_ml_category );
 249     ml->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_ML ) );
 250
 251     QTreeWidgetItem *msrc = addItem( CATEGORY_TYPE, qtr( "Media Sources" ),
 252                                       false )->treeItem();
 253
 254     QTreeWidgetItem *mfldrs = NULL;
 255
 256     QTreeWidgetItem *shouts = NULL;
 257
 258     msrc->setExpanded( true );
 259
 260     char **ppsz_longnames;
 261     char **ppsz_names = vlc_sd_GetNames( THEPL, &ppsz_longnames );
 262     if( !ppsz_names )
 263         return;
 264
 265     char **ppsz_name = ppsz_names, **ppsz_longname = ppsz_longnames;
 266     for( ; *ppsz_name; ppsz_name++, ppsz_longname++ )
 267     {
 268         //msg_Dbg( p_intf, "Adding a SD item: %s", *ppsz_longname );
 269 #define SD_IS( name ) ( !strcmp( *ppsz_name, name ) )
 270
 271         if( SD_IS("shoutcast") || SD_IS("shoutcasttv") ||
 272             SD_IS("frenchtv") || SD_IS("freebox") )
 273         {
 274             if( !shouts ) shouts = addItem( CATEGORY_TYPE, qtr( "Shoutcast" ),
 275                                             false, msrc )->treeItem();
 276             putSDData( addItem( SD_TYPE, *ppsz_longname, false, shouts ),
 277                        *ppsz_name, *ppsz_longname );
 278         }
 279         else if( SD_IS("video_dir") || SD_IS("audio_dir") || SD_IS("picture_dir") )
 280         {
 281             if( !mfldrs ) mfldrs = addItem( CATEGORY_TYPE, qtr( "Media Folders" ),
 282                                             false, msrc )->treeItem();
 283             putSDData( addItem( SD_TYPE, *ppsz_longname, false, mfldrs ),
 284                        *ppsz_name, *ppsz_longname );
 285         }
 286         else if( SD_IS("podcast") )
 287         {
 288
 289             PLSelItem *podItem = addItem( SD_TYPE, qtr( "Podcasts" ), false, msrc );
 290             putSDData( podItem, *ppsz_name, *ppsz_longname );
 291             podItem->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_PODCAST ) );
 292             podItem->addAction( ADD_ACTION, qtr( "Subscribe to a podcast" ) );
 293             CONNECT( podItem, action( PLSelItem* ), this, podcastAdd( PLSelItem* ) );
 294
 295             podcastsParent = podItem->treeItem();
 296         }
 297         else
 298         {
 299             putSDData( addItem( SD_TYPE, qtr( *ppsz_longname ), false, msrc ),
 300                        *ppsz_name, *ppsz_longname );
 301         }
 302
 303 #undef SD_IS
 304
 305         free( *ppsz_name );
 306         free( *ppsz_longname );
 307     }
 308     free( ppsz_names );
 309     free( ppsz_longnames );
 310 }
 311
 312 QStringList PLSelector::mimeTypes() const
 313 {
 314     QStringList types;
 315     types << "vlc/qt-playlist-item";
 316     return types;
 317 }
 318
 319 bool PLSelector::dropMimeData ( QTreeWidgetItem * parent, int index,
 320   const QMimeData * data, Qt::DropAction action )
 321 {
 322     if( !parent ) return false;
 323
 324     QVariant type = parent->data( 0, TYPE_ROLE );
 325     if( type == QVariant() ) return false;
 326     int i_truth = parent->data( 0, SPECIAL_ROLE ).toInt();
 327
 328     if( i_truth != IS_PL && i_truth != IS_ML ) return false;
 329     bool to_pl = ( i_truth == IS_PL );
 330
 331     if( data->hasFormat( "vlc/qt-playlist-item" ) )
 332     {
 333         QByteArray encodedData = data->data( "vlc/qt-playlist-item" );
 334         QDataStream stream( &encodedData, QIODevice::ReadOnly );
 335         playlist_Lock( THEPL );
 336         while( !stream.atEnd() )
 337         {
 338             PLItem *item;
 339             stream.readRawData( (char*)&item, sizeof(PLItem*) );
 340             input_item_t *pl_input =item->inputItem();
 341             playlist_AddExt ( THEPL,
 342                 pl_input->psz_uri, pl_input->psz_name,
 343                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE, PLAYLIST_END,
 344                 pl_input->i_duration,
 345                 pl_input->i_options, pl_input->ppsz_options, pl_input->optflagc,
 346                 to_pl, true );
 347         }
 348         playlist_Unlock( THEPL );
 349     }
 350     return true;
 351 }
 352
 353 void PLSelector::plItemAdded( int item, int parent )
 354 {
 355     if( parent != podcastsParentId ) return;
 356
 357     playlist_Lock( THEPL );
 358
 359     playlist_item_t *p_item = playlist_ItemGetById( THEPL, item );
 360     if( !p_item ) {
 361         playlist_Unlock( THEPL );
 362         return;
 363     }
 364
 365     int c = podcastsParent->childCount();
 366     for( int i = 0; i < c; i++ )
 367     {
 368         QTreeWidgetItem *podItem = podcastsParent->child(i);
 369         if( podItem->data( 0, PL_ITEM_ID_ROLE ).toInt() == item )
 370         {
 371           //msg_Dbg( p_intf, "Podcast already in: (%d) %s", item, p_item->p_input->psz_uri);
 372           playlist_Unlock( THEPL );
 373           return;
 374         }
 375     }
 376
 377     //msg_Dbg( p_intf, "Adding podcast: (%d) %s", item, p_item->p_input->psz_uri );
 378     addPodcastItem( p_item );
 379
 380     playlist_Unlock( THEPL );
 381
 382     podcastsParent->setExpanded( true );
 383 }
 384
 385 void PLSelector::plItemRemoved( int id )
 386 {
 387     int c = podcastsParent->childCount();
 388     for( int i = 0; i < c; i++ )
 389     {
 390         QTreeWidgetItem *item = podcastsParent->child(i);
 391         if( item->data( 0, PL_ITEM_ID_ROLE ).toInt() == id )
 392         {
 393             input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 394             //msg_Dbg( p_intf, "Removing podcast: (%d) %s", id, p_input->psz_uri );
 395             vlc_gc_decref( p_input );
 396             delete item;
 397             return;
 398         }
 399     }
 400 }
 401
 402 void PLSelector::inputItemUpdate( input_item_t *arg )
 403 {
 404     int c = podcastsParent->childCount();
 405     for( int i = 0; i < c; i++ )
 406     {
 407         QTreeWidgetItem *item = podcastsParent->child(i);
 408         input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 409         if( p_input == arg )
 410         {
 411             PLSelItem *si = itemWidget( item );
 412             char *psz_name = input_item_GetName( p_input );
 413             si->setText( qfu( psz_name ) );
 414             free( psz_name );
 415             return;
 416         }
 417     }
 418 }
 419
 420 void PLSelector::podcastAdd( PLSelItem* item )
 421 {
 422     bool ok;
 423     QString url = QInputDialog::getText( this, qtr( "Subscribe" ),
 424                                          qtr( "Enter URL of the podcast to subscribe to:" ),
 425                                          QLineEdit::Normal, QString(), &ok );
 426     if( !ok || url.isEmpty() ) return;
 427
 428     setSource( podcastsParent ); //to load the SD in case it's not loaded
 429
 430     vlc_object_t *p_obj = (vlc_object_t*) vlc_object_find_name(
 431         p_intf->p_libvlc, "podcast", FIND_CHILD );
 432     if( !p_obj ) return;
 433
 434     QString request("ADD:");
 435     request += url;
 436     var_SetString( p_obj, "podcast-request", qtu( request ) );
 437     vlc_object_release( p_obj );
 438 }
 439
 440 void PLSelector::podcastRemove( PLSelItem* item )
 441 {
 442     //FIXME will translators know to leave that %1 somewhere inside?
 443     QString question ( qtr( "Do you really want to unsubscribe from %1?" ) );
 444     question = question.arg( item->text() );
 445     QMessageBox::StandardButton res =
 446         QMessageBox::question( this, qtr( "Unsubscribe" ), question,
 447                                QMessageBox::Ok | QMessageBox::Cancel,
 448                                QMessageBox::Cancel );
 449     if( res == QMessageBox::Cancel ) return;
 450
 451     input_item_t *input = item->treeItem()->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 452     if( !input ) return;
 453
 454     vlc_object_t *p_obj = (vlc_object_t*) vlc_object_find_name(
 455         p_intf->p_libvlc, "podcast", FIND_CHILD );
 456     if( !p_obj ) return;
 457
 458     QString request("RM:");
 459     char *psz_uri = input_item_GetURI( input );
 460     request += qfu( psz_uri );
 461     var_SetString( p_obj, "podcast-request", qtu( request ) );
 462     vlc_object_release( p_obj );
 463     free( psz_uri );
 464 }
 465
 466 PLSelItem * PLSelector::itemWidget( QTreeWidgetItem *item )
 467 {
 468     return ( static_cast<PLSelItem*>( QTreeWidget::itemWidget( item, 0 ) ) );
 469 }
 470