git.sesse.net Git - vlc/blob - modules/gui/qt4/components/playlist/standardpanel.cpp

   1 /*****************************************************************************
   2  * standardpanel.cpp : The "standard" playlist panel : just a treeview
   3  ****************************************************************************
   4  * Copyright © 2000-2010 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          Jean-Baptiste Kempf <jb@videolan.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 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include "components/playlist/standardpanel.hpp"
  30
  31 #include "components/playlist/playlist_model.hpp" /* PLModel */
  32 #include "components/playlist/views.hpp"          /* 3 views */
  33 #include "components/playlist/selector.hpp"       /* PLSelector */
  34 #include "menus.hpp"                              /* Popup */
  35 #include "input_manager.hpp"                      /* THEMIM */
  36
  37 #include "sorting.h"                              /* Columns order */
  38
  39 #include <vlc_services_discovery.h>               /* SD_CMD_SEARCH */
  40
  41 #include <QHeaderView>
  42 #include <QModelIndexList>
  43 #include <QMenu>
  44 #include <QKeyEvent>
  45 #include <QWheelEvent>
  46 #include <QStackedLayout>
  47 #include <QSignalMapper>
  48 #include <QSettings>
  49
  50 #include <assert.h>
  51
  52 StandardPLPanel::StandardPLPanel( PlaylistWidget *_parent,
  53                                   intf_thread_t *_p_intf,
  54                                   playlist_item_t *p_root,
  55                                   PLSelector *_p_selector,
  56                                   PLModel *_p_model )
  57                 : QWidget( _parent ), p_intf( _p_intf ),
  58                   p_selector( _p_selector ), model( _p_model )
  59 {
  60     viewStack = new QStackedLayout( this );
  61     viewStack->setSpacing( 0 ); viewStack->setMargin( 0 );
  62     setMinimumWidth( 300 );
  63
  64     iconView = NULL;
  65     treeView = NULL;
  66     listView = NULL;
  67
  68     currentRootIndexId  = -1;
  69     lastActivatedId     = -1;
  70
  71     /* Saved Settings */
  72     getSettings()->beginGroup("Playlist");
  73     int i_viewMode = getSettings()->value( "view-mode", TREE_VIEW ).toInt();
  74     getSettings()->endGroup();
  75
  76     showView( i_viewMode );
  77
  78     DCONNECT( THEMIM, leafBecameParent( input_item_t *),
  79               this, browseInto( input_item_t * ) );
  80
  81     CONNECT( model, currentChanged( const QModelIndex& ),
  82              this, handleExpansion( const QModelIndex& ) );
  83     CONNECT( model, rootChanged(), this, handleRootChange() );
  84
  85     setRoot( p_root );
  86 }
  87
  88 StandardPLPanel::~StandardPLPanel()
  89 {
  90     getSettings()->beginGroup("Playlist");
  91     if( treeView )
  92         getSettings()->setValue( "headerStateV2", treeView->header()->saveState() );
  93     if( currentView == treeView )
  94         getSettings()->setValue( "view-mode", TREE_VIEW );
  95     else if( currentView == listView )
  96         getSettings()->setValue( "view-mode", LIST_VIEW );
  97     else if( currentView == iconView )
  98         getSettings()->setValue( "view-mode", ICON_VIEW );
  99     getSettings()->endGroup();
 100 }
 101
 102 /* Unused anymore, but might be useful, like in right-click menu */
 103 void StandardPLPanel::gotoPlayingItem()
 104 {
 105     currentView->scrollTo( model->currentIndex() );
 106 }
 107
 108 void StandardPLPanel::handleExpansion( const QModelIndex& index )
 109 {
 110     assert( currentView );
 111     if( currentRootIndexId != -1 && currentRootIndexId != model->itemId( index.parent() ) )
 112         browseInto( index.parent() );
 113     currentView->scrollTo( index );
 114 }
 115
 116 void StandardPLPanel::handleRootChange()
 117 {
 118     browseInto();
 119 }
 120
 121 void StandardPLPanel::popupPlView( const QPoint &point )
 122 {
 123     QModelIndex index = currentView->indexAt( point );
 124     QPoint globalPoint = currentView->viewport()->mapToGlobal( point );
 125     QItemSelectionModel *selection = currentView->selectionModel();
 126     QModelIndexList list = selection->selectedIndexes();
 127
 128     if( !model->popup( index, globalPoint, list ) )
 129         QVLCMenu::PopupMenu( p_intf, true );
 130 }
 131
 132 void StandardPLPanel::popupSelectColumn( QPoint pos )
 133 {
 134     QMenu menu;
 135     assert( treeView );
 136
 137     /* We do not offer the option to hide index 0 column, or
 138     * QTreeView will behave weird */
 139     int i, j;
 140     for( i = 1 << 1, j = 1; i < COLUMN_END; i <<= 1, j++ )
 141     {
 142         QAction* option = menu.addAction( qfu( psz_column_title( i ) ) );
 143         option->setCheckable( true );
 144         option->setChecked( !treeView->isColumnHidden( j ) );
 145         selectColumnsSigMapper->setMapping( option, j );
 146         CONNECT( option, triggered(), selectColumnsSigMapper, map() );
 147     }
 148     menu.exec( QCursor::pos() );
 149 }
 150
 151 void StandardPLPanel::toggleColumnShown( int i )
 152 {
 153     treeView->setColumnHidden( i, !treeView->isColumnHidden( i ) );
 154 }
 155
 156 /* Search in the playlist */
 157 void StandardPLPanel::search( const QString& searchText )
 158 {
 159     int type;
 160     QString name;
 161     p_selector->getCurrentSelectedItem( &type, &name );
 162     if( type != SD_TYPE )
 163     {
 164         bool flat = currentView == iconView || currentView == listView;
 165         model->search( searchText,
 166                        flat ? currentView->rootIndex() : QModelIndex(),
 167                        !flat );
 168     }
 169 }
 170
 171 void StandardPLPanel::searchDelayed( const QString& searchText )
 172 {
 173     int type;
 174     QString name;
 175     p_selector->getCurrentSelectedItem( &type, &name );
 176
 177     if( type == SD_TYPE )
 178     {
 179         if( !name.isEmpty() && !searchText.isEmpty() )
 180             playlist_ServicesDiscoveryControl( THEPL, qtu( name ), SD_CMD_SEARCH, qtu( searchText ) );
 181     }
 182 }
 183
 184 /* Set the root of the new Playlist */
 185 /* This activated by the selector selection */
 186 void StandardPLPanel::setRoot( playlist_item_t *p_item )
 187 {
 188     model->rebuild( p_item );
 189 }
 190
 191 void StandardPLPanel::browseInto( const QModelIndex &index )
 192 {
 193     if( currentView == iconView || currentView == listView )
 194     {
 195         currentRootIndexId = model->itemId( index );
 196         currentView->setRootIndex( index );
 197     }
 198
 199     emit viewChanged( index );
 200 }
 201
 202 void StandardPLPanel::browseInto( )
 203 {
 204     browseInto( currentRootIndexId != -1 && currentView != treeView ?
 205                 model->index( currentRootIndexId, 0 ) :
 206                 QModelIndex() );
 207 }
 208
 209 void StandardPLPanel::wheelEvent( QWheelEvent *e )
 210 {
 211     // Accept this event in order to prevent unwanted volume up/down changes
 212     e->accept();
 213 }
 214
 215 bool StandardPLPanel::eventFilter ( QObject * watched, QEvent * event )
 216 {
 217     if (event->type() == QEvent::KeyPress)
 218     {
 219         QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
 220         if( keyEvent->key() == Qt::Key_Delete ||
 221             keyEvent->key() == Qt::Key_Backspace )
 222         {
 223             deleteSelection();
 224             return true;
 225         }
 226     }
 227     return false;
 228 }
 229
 230 void StandardPLPanel::deleteSelection()
 231 {
 232     QItemSelectionModel *selection = currentView->selectionModel();
 233     QModelIndexList list = selection->selectedIndexes();
 234     model->doDelete( list );
 235 }
 236
 237 void StandardPLPanel::createIconView()
 238 {
 239     iconView = new PlIconView( model, this );
 240     iconView->setContextMenuPolicy( Qt::CustomContextMenu );
 241     CONNECT( iconView, customContextMenuRequested( const QPoint & ),
 242              this, popupPlView( const QPoint & ) );
 243     CONNECT( iconView, activated( const QModelIndex & ),
 244              this, activate( const QModelIndex & ) );
 245     iconView->installEventFilter( this );
 246     viewStack->addWidget( iconView );
 247 }
 248
 249 void StandardPLPanel::createListView()
 250 {
 251     listView = new PlListView( model, this );
 252     listView->setContextMenuPolicy( Qt::CustomContextMenu );
 253     CONNECT( listView, customContextMenuRequested( const QPoint & ),
 254              this, popupPlView( const QPoint & ) );
 255     CONNECT( listView, activated( const QModelIndex & ),
 256              this, activate( const QModelIndex & ) );
 257     listView->installEventFilter( this );
 258     viewStack->addWidget( listView );
 259 }
 260
 261 void StandardPLPanel::createTreeView()
 262 {
 263     /* Create and configure the QTreeView */
 264     treeView = new PlTreeView;
 265
 266     treeView->setIconSize( QSize( 20, 20 ) );
 267     treeView->setAlternatingRowColors( true );
 268     treeView->setAnimated( true );
 269     treeView->setUniformRowHeights( true );
 270     treeView->setSortingEnabled( true );
 271     treeView->header()->setSortIndicator( -1 , Qt::AscendingOrder );
 272     treeView->header()->setSortIndicatorShown( true );
 273     treeView->header()->setClickable( true );
 274     treeView->header()->setContextMenuPolicy( Qt::CustomContextMenu );
 275
 276     treeView->setSelectionBehavior( QAbstractItemView::SelectRows );
 277     treeView->setSelectionMode( QAbstractItemView::ExtendedSelection );
 278     treeView->setDragEnabled( true );
 279     treeView->setAcceptDrops( true );
 280     treeView->setDropIndicatorShown( true );
 281     treeView->setContextMenuPolicy( Qt::CustomContextMenu );
 282
 283     /* setModel after setSortingEnabled(true), or the model will sort immediately! */
 284     treeView->setModel( model );
 285
 286     getSettings()->beginGroup("Playlist");
 287
 288     if( getSettings()->contains( "headerStateV2" ) )
 289     {
 290         treeView->header()->restoreState(
 291                 getSettings()->value( "headerStateV2" ).toByteArray() );
 292     }
 293     else
 294     {
 295         for( int m = 1, c = 0; m != COLUMN_END; m <<= 1, c++ )
 296         {
 297             treeView->setColumnHidden( c, !( m & COLUMN_DEFAULT ) );
 298             if( m == COLUMN_TITLE ) treeView->header()->resizeSection( c, 200 );
 299             else if( m == COLUMN_DURATION ) treeView->header()->resizeSection( c, 80 );
 300         }
 301     }
 302
 303     getSettings()->endGroup();
 304
 305     /* Connections for the TreeView */
 306     CONNECT( treeView, activated( const QModelIndex& ),
 307              this, activate( const QModelIndex& ) );
 308     CONNECT( treeView->header(), customContextMenuRequested( const QPoint & ),
 309              this, popupSelectColumn( QPoint ) );
 310     CONNECT( treeView, customContextMenuRequested( const QPoint & ),
 311              this, popupPlView( const QPoint & ) );
 312     treeView->installEventFilter( this );
 313
 314     /* SignalMapper for columns */
 315     selectColumnsSigMapper = new QSignalMapper( this );
 316     CONNECT( selectColumnsSigMapper, mapped( int ),
 317              this, toggleColumnShown( int ) );
 318
 319     viewStack->addWidget( treeView );
 320 }
 321
 322 void StandardPLPanel::showView( int i_view )
 323 {
 324     switch( i_view )
 325     {
 326     case TREE_VIEW:
 327     {
 328         if( treeView == NULL )
 329             createTreeView();
 330         currentView = treeView;
 331         break;
 332     }
 333     case ICON_VIEW:
 334     {
 335         if( iconView == NULL )
 336             createIconView();
 337         currentView = iconView;
 338         break;
 339     }
 340     case LIST_VIEW:
 341     {
 342         if( listView == NULL )
 343             createListView();
 344         currentView = listView;
 345         break;
 346     }
 347     default: return;
 348     }
 349
 350     viewStack->setCurrentWidget( currentView );
 351     //viewActions[i_view]->setChecked( true );
 352     browseInto();
 353     gotoPlayingItem();
 354 }
 355
 356 void StandardPLPanel::cycleViews()
 357 {
 358     if( currentView == iconView )
 359         showView( TREE_VIEW );
 360     else if( currentView == treeView )
 361         showView( LIST_VIEW );
 362     else if( currentView == listView )
 363         showView( ICON_VIEW );
 364     else
 365         assert( 0 );
 366 }
 367
 368 void StandardPLPanel::activate( const QModelIndex &index )
 369 {
 370     if( !index.data( PLModel::IsLeafNodeRole ).toBool() )
 371     {
 372         if( currentView != treeView )
 373             browseInto( index );
 374     }
 375     else
 376     {
 377         playlist_Lock( THEPL );
 378         playlist_item_t *p_item = playlist_ItemGetById( THEPL, model->itemId( index ) );
 379         p_item->i_flags |= PLAYLIST_SUBITEM_STOP_FLAG;
 380         lastActivatedId = p_item->p_input->i_id;
 381         playlist_Unlock( THEPL );
 382         model->activateItem( index );
 383     }
 384 }
 385
 386 void StandardPLPanel::browseInto( input_item_t *p_input )
 387 {
 388     if( p_input->i_id != lastActivatedId ) return;
 389
 390     playlist_Lock( THEPL );
 391
 392     playlist_item_t *p_item = playlist_ItemGetByInput( THEPL, p_input );
 393     if( !p_item )
 394     {
 395         playlist_Unlock( THEPL );
 396         return;
 397     }
 398
 399     QModelIndex index = model->index( p_item->i_id, 0 );
 400
 401     playlist_Unlock( THEPL );
 402
 403     if( currentView == treeView )
 404         treeView->setExpanded( index, true );
 405     else
 406         browseInto( index );
 407
 408     lastActivatedId = -1;
 409 }