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 (C) 2000-2009 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          JB 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 "dialogs_provider.hpp"
  30
  31 #include "components/playlist/playlist_model.hpp"
  32 #include "components/playlist/standardpanel.hpp"
  33 #include "components/playlist/icon_view.hpp"
  34 #include "components/playlist/selector.hpp"
  35 #include "util/customwidgets.hpp"
  36 #include "menus.hpp"
  37 #include "input_manager.hpp"
  38
  39 #include <vlc_intf_strings.h>
  40
  41 #include <QPushButton>
  42 #include <QHeaderView>
  43 #include <QKeyEvent>
  44 #include <QModelIndexList>
  45 #include <QLabel>
  46 #include <QMenu>
  47 #include <QWheelEvent>
  48 #include <QToolButton>
  49 #include <QFontMetrics>
  50 #include <QStackedLayout>
  51
  52 #include <assert.h>
  53
  54 #include "sorting.h"
  55
  56
  57 StandardPLPanel::StandardPLPanel( PlaylistWidget *_parent,
  58                                   intf_thread_t *_p_intf,
  59                                   playlist_t *p_playlist,
  60                                   playlist_item_t *p_root,
  61                                   PLSelector *_p_selector ):
  62                                   QWidget( _parent ), p_intf( _p_intf ),
  63                                   p_selector( _p_selector )
  64 {
  65     layout = new QGridLayout( this );
  66     layout->setSpacing( 0 ); layout->setMargin( 0 );
  67     setMinimumWidth( 300 );
  68
  69     iconView = NULL;
  70     treeView = NULL;
  71     listView = NULL;
  72     viewStack = new QStackedLayout();
  73     layout->addLayout( viewStack, 1, 0, 1, -1 );
  74
  75     model = new PLModel( p_playlist, p_intf, p_root, this );
  76     currentRootId = -1;
  77     currentRootIndexId = -1;
  78     lastActivatedId = -1;
  79
  80     /* Saved Settings */
  81     getSettings()->beginGroup("Playlist");
  82
  83     int i_viewMode = getSettings()->value( "view-mode", TREE_VIEW ).toInt();
  84
  85     getSettings()->endGroup();
  86
  87     showView( i_viewMode );
  88
  89     DCONNECT( THEMIM, leafBecameParent( input_item_t *),
  90               this, browseInto( input_item_t * ) );
  91
  92     CONNECT( model, currentChanged( const QModelIndex& ),
  93              this, handleExpansion( const QModelIndex& ) );
  94     CONNECT( model, rootChanged(), this, handleRootChange() );
  95 }
  96
  97 StandardPLPanel::~StandardPLPanel()
  98 {
  99     getSettings()->beginGroup("Playlist");
 100     if( treeView )
 101         getSettings()->setValue( "headerStateV2", treeView->header()->saveState() );
 102     if( currentView == treeView )
 103         getSettings()->setValue( "view-mode", TREE_VIEW );
 104     else if( currentView == listView )
 105         getSettings()->setValue( "view-mode", LIST_VIEW );
 106     else if( currentView == iconView )
 107         getSettings()->setValue( "view-mode", ICON_VIEW );
 108     getSettings()->endGroup();
 109 }
 110
 111 /* Unused anymore, but might be useful, like in right-click menu */
 112 void StandardPLPanel::gotoPlayingItem()
 113 {
 114     currentView->scrollTo( model->currentIndex() );
 115 }
 116
 117 void StandardPLPanel::handleExpansion( const QModelIndex& index )
 118 {
 119     assert( currentView );
 120     if( currentRootIndexId != -1 && currentRootIndexId != model->itemId( index.parent() ) )
 121         browseInto( index.parent() );
 122     currentView->scrollTo( index );
 123 }
 124
 125 void StandardPLPanel::handleRootChange()
 126 {
 127     browseInto();
 128 }
 129
 130 void StandardPLPanel::popupPlView( const QPoint &point )
 131 {
 132     QModelIndex index = currentView->indexAt( point );
 133     QPoint globalPoint = currentView->viewport()->mapToGlobal( point );
 134     QItemSelectionModel *selection = currentView->selectionModel();
 135     QModelIndexList list = selection->selectedIndexes();
 136
 137     if( !model->popup( index, globalPoint, list ) )
 138         QVLCMenu::PopupMenu( p_intf, true );
 139 }
 140
 141 void StandardPLPanel::popupSelectColumn( QPoint pos )
 142 {
 143     QMenu menu;
 144     assert( treeView );
 145
 146     /* We do not offer the option to hide index 0 column, or
 147     * QTreeView will behave weird */
 148     int i, j;
 149     for( i = 1 << 1, j = 1; i < COLUMN_END; i <<= 1, j++ )
 150     {
 151         QAction* option = menu.addAction(
 152             qfu( psz_column_title( i ) ) );
 153         option->setCheckable( true );
 154         option->setChecked( !treeView->isColumnHidden( j ) );
 155         selectColumnsSigMapper->setMapping( option, j );
 156         CONNECT( option, triggered(), selectColumnsSigMapper, map() );
 157     }
 158     menu.exec( QCursor::pos() );
 159 }
 160
 161 void StandardPLPanel::toggleColumnShown( int i )
 162 {
 163     treeView->setColumnHidden( i, !treeView->isColumnHidden( i ) );
 164 }
 165
 166 /* Search in the playlist */
 167 void StandardPLPanel::search( const QString& searchText )
 168 {
 169     int type;
 170     QString name;
 171     p_selector->getCurrentSelectedItem( &type, &name );
 172     if( type != SD_TYPE )
 173     {
 174         bool flat = currentView == iconView || currentView == listView;
 175         model->search( searchText,
 176                        flat ? currentView->rootIndex() : QModelIndex(),
 177                        !flat );
 178     }
 179 }
 180
 181 void StandardPLPanel::searchDelayed( const QString& searchText )
 182 {
 183     int type;
 184     QString name;
 185     p_selector->getCurrentSelectedItem( &type, &name );
 186
 187     if( type == SD_TYPE )
 188     {
 189         if( !name.isEmpty() && !searchText.isEmpty() )
 190             playlist_QueryServicesDiscovery( THEPL, qtu( name ), qtu( searchText ) );
 191     }
 192 }
 193
 194 /* Set the root of the new Playlist */
 195 /* This activated by the selector selection */
 196 void StandardPLPanel::setRoot( playlist_item_t *p_item )
 197 {
 198     model->rebuild( p_item );
 199 }
 200
 201 void StandardPLPanel::browseInto( const QModelIndex &index )
 202 {
 203     if( currentView == iconView || currentView == listView )
 204     {
 205         currentRootIndexId = model->itemId( index );
 206         currentView->setRootIndex( index );
 207     }
 208
 209     emit viewChanged( index );
 210 }
 211
 212 void StandardPLPanel::browseInto( )
 213 {
 214     browseInto( currentRootIndexId != -1 && currentView != treeView ?
 215                 model->index( currentRootIndexId, 0 ) :
 216                 QModelIndex() );
 217 }
 218
 219 void StandardPLPanel::wheelEvent( QWheelEvent *e )
 220 {
 221     // Accept this event in order to prevent unwanted volume up/down changes
 222     e->accept();
 223 }
 224
 225 bool StandardPLPanel::eventFilter ( QObject * watched, QEvent * event )
 226 {
 227     if (event->type() == QEvent::KeyPress)
 228     {
 229         QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
 230         if( keyEvent->key() == Qt::Key_Delete ||
 231             keyEvent->key() == Qt::Key_Backspace )
 232         {
 233             deleteSelection();
 234             return true;
 235         }
 236     }
 237     return false;
 238 }
 239
 240 void StandardPLPanel::deleteSelection()
 241 {
 242     QItemSelectionModel *selection = currentView->selectionModel();
 243     QModelIndexList list = selection->selectedIndexes();
 244     model->doDelete( list );
 245 }
 246
 247 void StandardPLPanel::createIconView()
 248 {
 249     iconView = new PlIconView( model, this );
 250     iconView->setContextMenuPolicy( Qt::CustomContextMenu );
 251     CONNECT( iconView, customContextMenuRequested( const QPoint & ),
 252              this, popupPlView( const QPoint & ) );
 253     CONNECT( iconView, activated( const QModelIndex & ),
 254              this, activate( const QModelIndex & ) );
 255     iconView->installEventFilter( this );
 256     viewStack->addWidget( iconView );
 257 }
 258
 259 void StandardPLPanel::createListView()
 260 {
 261     listView = new PlListView( model, this );
 262     listView->setContextMenuPolicy( Qt::CustomContextMenu );
 263     CONNECT( listView, customContextMenuRequested( const QPoint & ),
 264              this, popupPlView( const QPoint & ) );
 265     CONNECT( listView, activated( const QModelIndex & ),
 266              this, activate( const QModelIndex & ) );
 267     listView->installEventFilter( this );
 268     viewStack->addWidget( listView );
 269 }
 270
 271
 272 void StandardPLPanel::createTreeView()
 273 {
 274     /* Create and configure the QTreeView */
 275     treeView = new PlTreeView;
 276
 277     treeView->setIconSize( QSize( 20, 20 ) );
 278     treeView->setAlternatingRowColors( true );
 279     treeView->setAnimated( true );
 280     treeView->setUniformRowHeights( true );
 281     treeView->setSortingEnabled( true );
 282     treeView->header()->setSortIndicator( -1 , Qt::AscendingOrder );
 283     treeView->header()->setSortIndicatorShown( true );
 284     treeView->header()->setClickable( true );
 285     treeView->header()->setContextMenuPolicy( Qt::CustomContextMenu );
 286
 287     treeView->setSelectionBehavior( QAbstractItemView::SelectRows );
 288     treeView->setSelectionMode( QAbstractItemView::ExtendedSelection );
 289     treeView->setDragEnabled( true );
 290     treeView->setAcceptDrops( true );
 291     treeView->setDropIndicatorShown( true );
 292     treeView->setContextMenuPolicy( Qt::CustomContextMenu );
 293
 294     /* setModel after setSortingEnabled(true), or the model will sort immediately! */
 295     treeView->setModel( model );
 296
 297     getSettings()->beginGroup("Playlist");
 298
 299     if( getSettings()->contains( "headerStateV2" ) )
 300     {
 301         treeView->header()->restoreState(
 302                 getSettings()->value( "headerStateV2" ).toByteArray() );
 303     }
 304     else
 305     {
 306         for( int m = 1, c = 0; m != COLUMN_END; m <<= 1, c++ )
 307         {
 308             treeView->setColumnHidden( c, !( m & COLUMN_DEFAULT ) );
 309             if( m == COLUMN_TITLE ) treeView->header()->resizeSection( c, 200 );
 310             else if( m == COLUMN_DURATION ) treeView->header()->resizeSection( c, 80 );
 311         }
 312     }
 313
 314     getSettings()->endGroup();
 315
 316     /* Connections for the TreeView */
 317     CONNECT( treeView, activated( const QModelIndex& ),
 318              this, activate( const QModelIndex& ) );
 319     CONNECT( treeView->header(), customContextMenuRequested( const QPoint & ),
 320              this, popupSelectColumn( QPoint ) );
 321     CONNECT( treeView, customContextMenuRequested( const QPoint & ),
 322              this, popupPlView( const QPoint & ) );
 323     treeView->installEventFilter( this );
 324
 325     /* SignalMapper for columns */
 326     selectColumnsSigMapper = new QSignalMapper( this );
 327     CONNECT( selectColumnsSigMapper, mapped( int ),
 328              this, toggleColumnShown( int ) );
 329
 330     /* Finish the layout */
 331     viewStack->addWidget( treeView );
 332 }
 333
 334 void StandardPLPanel::showView( int i_view )
 335 {
 336     switch( i_view )
 337     {
 338     case TREE_VIEW:
 339     {
 340         if( treeView == NULL )
 341             createTreeView();
 342         currentView = treeView;
 343         break;
 344     }
 345     case ICON_VIEW:
 346     {
 347         if( iconView == NULL )
 348             createIconView();
 349         currentView = iconView;
 350         break;
 351     }
 352     case LIST_VIEW:
 353     {
 354         if( listView == NULL )
 355             createListView();
 356         currentView = listView;
 357         break;
 358     }
 359     default: return;
 360     }
 361
 362     viewStack->setCurrentWidget( currentView );
 363     //viewActions[i_view]->setChecked( true );
 364     browseInto();
 365     gotoPlayingItem();
 366 }
 367
 368 void StandardPLPanel::cycleViews()
 369 {
 370     if( currentView == iconView )
 371         showView( TREE_VIEW );
 372     else if( currentView == treeView )
 373         showView( LIST_VIEW );
 374     else if( currentView == listView )
 375         showView( ICON_VIEW );
 376     else
 377         assert( 0 );
 378 }
 379
 380 void StandardPLPanel::activate( const QModelIndex &index )
 381 {
 382     if( !index.data( PLModel::IsLeafNodeRole ).toBool() )
 383     {
 384         if( currentView != treeView )
 385             browseInto( index );
 386     }
 387     else
 388     {
 389         playlist_Lock( THEPL );
 390         playlist_item_t *p_item = playlist_ItemGetById( THEPL, model->itemId( index ) );
 391         p_item->i_flags |= PLAYLIST_SUBITEM_STOP_FLAG;
 392         lastActivatedId = p_item->p_input->i_id;
 393         playlist_Unlock( THEPL );
 394         model->activateItem( index );
 395     }
 396 }
 397
 398 void StandardPLPanel::browseInto( input_item_t *p_input )
 399 {
 400
 401     if( p_input->i_id != lastActivatedId ) return;
 402
 403     playlist_Lock( THEPL );
 404
 405     playlist_item_t *p_item = playlist_ItemGetByInput( THEPL, p_input );
 406     if( !p_item )
 407     {
 408         playlist_Unlock( THEPL );
 409         return;
 410     }
 411
 412     QModelIndex index = model->index( p_item->i_id, 0 );
 413
 414     playlist_Unlock( THEPL );
 415
 416     if( currentView == treeView )
 417         treeView->setExpanded( index, true );
 418     else
 419         browseInto( index );
 420
 421     lastActivatedId = -1;
 422
 423 }