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 #include <vlc_services_discovery.h>
  41
  42 #include <QPushButton>
  43 #include <QHeaderView>
  44 #include <QKeyEvent>
  45 #include <QModelIndexList>
  46 #include <QLabel>
  47 #include <QMenu>
  48 #include <QWheelEvent>
  49 #include <QToolButton>
  50 #include <QFontMetrics>
  51 #include <QStackedLayout>
  52
  53 #include <assert.h>
  54
  55 #include "sorting.h"
  56
  57
  58 StandardPLPanel::StandardPLPanel( PlaylistWidget *_parent,
  59                                   intf_thread_t *_p_intf,
  60                                   playlist_t *p_playlist,
  61                                   playlist_item_t *p_root,
  62                                   PLSelector *_p_selector,
  63                                   PLModel *_p_model
  64                                   ):
  65                                   QWidget( _parent ), p_intf( _p_intf ),
  66                                   p_selector( _p_selector )
  67 {
  68     layout = new QGridLayout( this );
  69     layout->setSpacing( 0 ); layout->setMargin( 0 );
  70     setMinimumWidth( 300 );
  71
  72     iconView = NULL;
  73     treeView = NULL;
  74     listView = NULL;
  75     viewStack = new QStackedLayout();
  76     layout->addLayout( viewStack, 1, 0, 1, -1 );
  77
  78     model = _p_model;
  79     currentRootId = -1;
  80     currentRootIndexId = -1;
  81     lastActivatedId = -1;
  82
  83     /* Saved Settings */
  84     getSettings()->beginGroup("Playlist");
  85
  86     int i_viewMode = getSettings()->value( "view-mode", TREE_VIEW ).toInt();
  87
  88     getSettings()->endGroup();
  89
  90     showView( i_viewMode );
  91
  92     DCONNECT( THEMIM, leafBecameParent( input_item_t *),
  93               this, browseInto( input_item_t * ) );
  94
  95     CONNECT( model, currentChanged( const QModelIndex& ),
  96              this, handleExpansion( const QModelIndex& ) );
  97     CONNECT( model, rootChanged(), this, handleRootChange() );
  98 }
  99
 100 StandardPLPanel::~StandardPLPanel()
 101 {
 102     getSettings()->beginGroup("Playlist");
 103     if( treeView )
 104         getSettings()->setValue( "headerStateV2", treeView->header()->saveState() );
 105     if( currentView == treeView )
 106         getSettings()->setValue( "view-mode", TREE_VIEW );
 107     else if( currentView == listView )
 108         getSettings()->setValue( "view-mode", LIST_VIEW );
 109     else if( currentView == iconView )
 110         getSettings()->setValue( "view-mode", ICON_VIEW );
 111     getSettings()->endGroup();
 112 }
 113
 114 /* Unused anymore, but might be useful, like in right-click menu */
 115 void StandardPLPanel::gotoPlayingItem()
 116 {
 117     currentView->scrollTo( model->currentIndex() );
 118 }
 119
 120 void StandardPLPanel::handleExpansion( const QModelIndex& index )
 121 {
 122     assert( currentView );
 123     if( currentRootIndexId != -1 && currentRootIndexId != model->itemId( index.parent() ) )
 124         browseInto( index.parent() );
 125     currentView->scrollTo( index );
 126 }
 127
 128 void StandardPLPanel::handleRootChange()
 129 {
 130     browseInto();
 131 }
 132
 133 void StandardPLPanel::popupPlView( const QPoint &point )
 134 {
 135     QModelIndex index = currentView->indexAt( point );
 136     QPoint globalPoint = currentView->viewport()->mapToGlobal( point );
 137     QItemSelectionModel *selection = currentView->selectionModel();
 138     QModelIndexList list = selection->selectedIndexes();
 139
 140     if( !model->popup( index, globalPoint, list ) )
 141         QVLCMenu::PopupMenu( p_intf, true );
 142 }
 143
 144 void StandardPLPanel::popupSelectColumn( QPoint pos )
 145 {
 146     QMenu menu;
 147     assert( treeView );
 148
 149     /* We do not offer the option to hide index 0 column, or
 150     * QTreeView will behave weird */
 151     int i, j;
 152     for( i = 1 << 1, j = 1; i < COLUMN_END; i <<= 1, j++ )
 153     {
 154         QAction* option = menu.addAction(
 155             qfu( psz_column_title( i ) ) );
 156         option->setCheckable( true );
 157         option->setChecked( !treeView->isColumnHidden( j ) );
 158         selectColumnsSigMapper->setMapping( option, j );
 159         CONNECT( option, triggered(), selectColumnsSigMapper, map() );
 160     }
 161     menu.exec( QCursor::pos() );
 162 }
 163
 164 void StandardPLPanel::toggleColumnShown( int i )
 165 {
 166     treeView->setColumnHidden( i, !treeView->isColumnHidden( i ) );
 167 }
 168
 169 /* Search in the playlist */
 170 void StandardPLPanel::search( const QString& searchText )
 171 {
 172     int type;
 173     QString name;
 174     p_selector->getCurrentSelectedItem( &type, &name );
 175     if( type != SD_TYPE )
 176     {
 177         bool flat = currentView == iconView || currentView == listView;
 178         model->search( searchText,
 179                        flat ? currentView->rootIndex() : QModelIndex(),
 180                        !flat );
 181     }
 182 }
 183
 184 void StandardPLPanel::searchDelayed( const QString& searchText )
 185 {
 186     int type;
 187     QString name;
 188     p_selector->getCurrentSelectedItem( &type, &name );
 189
 190     if( type == SD_TYPE )
 191     {
 192         if( !name.isEmpty() && !searchText.isEmpty() )
 193             playlist_ServicesDiscoveryControl( THEPL, qtu( name ), SD_CMD_SEARCH, qtu( searchText ) );
 194     }
 195 }
 196
 197 /* Set the root of the new Playlist */
 198 /* This activated by the selector selection */
 199 void StandardPLPanel::setRoot( playlist_item_t *p_item )
 200 {
 201     model->rebuild( p_item );
 202 }
 203
 204 void StandardPLPanel::browseInto( const QModelIndex &index )
 205 {
 206     if( currentView == iconView || currentView == listView )
 207     {
 208         currentRootIndexId = model->itemId( index );
 209         currentView->setRootIndex( index );
 210     }
 211
 212     emit viewChanged( index );
 213 }
 214
 215 void StandardPLPanel::browseInto( )
 216 {
 217     browseInto( currentRootIndexId != -1 && currentView != treeView ?
 218                 model->index( currentRootIndexId, 0 ) :
 219                 QModelIndex() );
 220 }
 221
 222 void StandardPLPanel::wheelEvent( QWheelEvent *e )
 223 {
 224     // Accept this event in order to prevent unwanted volume up/down changes
 225     e->accept();
 226 }
 227
 228 bool StandardPLPanel::eventFilter ( QObject * watched, QEvent * event )
 229 {
 230     if (event->type() == QEvent::KeyPress)
 231     {
 232         QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
 233         if( keyEvent->key() == Qt::Key_Delete ||
 234             keyEvent->key() == Qt::Key_Backspace )
 235         {
 236             deleteSelection();
 237             return true;
 238         }
 239     }
 240     return false;
 241 }
 242
 243 void StandardPLPanel::deleteSelection()
 244 {
 245     QItemSelectionModel *selection = currentView->selectionModel();
 246     QModelIndexList list = selection->selectedIndexes();
 247     model->doDelete( list );
 248 }
 249
 250 void StandardPLPanel::createIconView()
 251 {
 252     iconView = new PlIconView( model, this );
 253     iconView->setContextMenuPolicy( Qt::CustomContextMenu );
 254     CONNECT( iconView, customContextMenuRequested( const QPoint & ),
 255              this, popupPlView( const QPoint & ) );
 256     CONNECT( iconView, activated( const QModelIndex & ),
 257              this, activate( const QModelIndex & ) );
 258     iconView->installEventFilter( this );
 259     viewStack->addWidget( iconView );
 260 }
 261
 262 void StandardPLPanel::createListView()
 263 {
 264     listView = new PlListView( model, this );
 265     listView->setContextMenuPolicy( Qt::CustomContextMenu );
 266     CONNECT( listView, customContextMenuRequested( const QPoint & ),
 267              this, popupPlView( const QPoint & ) );
 268     CONNECT( listView, activated( const QModelIndex & ),
 269              this, activate( const QModelIndex & ) );
 270     listView->installEventFilter( this );
 271     viewStack->addWidget( listView );
 272 }
 273
 274
 275 void StandardPLPanel::createTreeView()
 276 {
 277     /* Create and configure the QTreeView */
 278     treeView = new PlTreeView;
 279
 280     treeView->setIconSize( QSize( 20, 20 ) );
 281     treeView->setAlternatingRowColors( true );
 282     treeView->setAnimated( true );
 283     treeView->setUniformRowHeights( true );
 284     treeView->setSortingEnabled( true );
 285     treeView->header()->setSortIndicator( -1 , Qt::AscendingOrder );
 286     treeView->header()->setSortIndicatorShown( true );
 287     treeView->header()->setClickable( true );
 288     treeView->header()->setContextMenuPolicy( Qt::CustomContextMenu );
 289
 290     treeView->setSelectionBehavior( QAbstractItemView::SelectRows );
 291     treeView->setSelectionMode( QAbstractItemView::ExtendedSelection );
 292     treeView->setDragEnabled( true );
 293     treeView->setAcceptDrops( true );
 294     treeView->setDropIndicatorShown( true );
 295     treeView->setContextMenuPolicy( Qt::CustomContextMenu );
 296
 297     /* setModel after setSortingEnabled(true), or the model will sort immediately! */
 298     treeView->setModel( model );
 299
 300     getSettings()->beginGroup("Playlist");
 301
 302     if( getSettings()->contains( "headerStateV2" ) )
 303     {
 304         treeView->header()->restoreState(
 305                 getSettings()->value( "headerStateV2" ).toByteArray() );
 306     }
 307     else
 308     {
 309         for( int m = 1, c = 0; m != COLUMN_END; m <<= 1, c++ )
 310         {
 311             treeView->setColumnHidden( c, !( m & COLUMN_DEFAULT ) );
 312             if( m == COLUMN_TITLE ) treeView->header()->resizeSection( c, 200 );
 313             else if( m == COLUMN_DURATION ) treeView->header()->resizeSection( c, 80 );
 314         }
 315     }
 316
 317     getSettings()->endGroup();
 318
 319     /* Connections for the TreeView */
 320     CONNECT( treeView, activated( const QModelIndex& ),
 321              this, activate( const QModelIndex& ) );
 322     CONNECT( treeView->header(), customContextMenuRequested( const QPoint & ),
 323              this, popupSelectColumn( QPoint ) );
 324     CONNECT( treeView, customContextMenuRequested( const QPoint & ),
 325              this, popupPlView( const QPoint & ) );
 326     treeView->installEventFilter( this );
 327
 328     /* SignalMapper for columns */
 329     selectColumnsSigMapper = new QSignalMapper( this );
 330     CONNECT( selectColumnsSigMapper, mapped( int ),
 331              this, toggleColumnShown( int ) );
 332
 333     /* Finish the layout */
 334     viewStack->addWidget( treeView );
 335 }
 336
 337 void StandardPLPanel::showView( int i_view )
 338 {
 339     switch( i_view )
 340     {
 341     case TREE_VIEW:
 342     {
 343         if( treeView == NULL )
 344             createTreeView();
 345         currentView = treeView;
 346         break;
 347     }
 348     case ICON_VIEW:
 349     {
 350         if( iconView == NULL )
 351             createIconView();
 352         currentView = iconView;
 353         break;
 354     }
 355     case LIST_VIEW:
 356     {
 357         if( listView == NULL )
 358             createListView();
 359         currentView = listView;
 360         break;
 361     }
 362     default: return;
 363     }
 364
 365     viewStack->setCurrentWidget( currentView );
 366     //viewActions[i_view]->setChecked( true );
 367     browseInto();
 368     gotoPlayingItem();
 369 }
 370
 371 void StandardPLPanel::cycleViews()
 372 {
 373     if( currentView == iconView )
 374         showView( TREE_VIEW );
 375     else if( currentView == treeView )
 376         showView( LIST_VIEW );
 377     else if( currentView == listView )
 378         showView( ICON_VIEW );
 379     else
 380         assert( 0 );
 381 }
 382
 383 void StandardPLPanel::activate( const QModelIndex &index )
 384 {
 385     if( !index.data( PLModel::IsLeafNodeRole ).toBool() )
 386     {
 387         if( currentView != treeView )
 388             browseInto( index );
 389     }
 390     else
 391     {
 392         playlist_Lock( THEPL );
 393         playlist_item_t *p_item = playlist_ItemGetById( THEPL, model->itemId( index ) );
 394         p_item->i_flags |= PLAYLIST_SUBITEM_STOP_FLAG;
 395         lastActivatedId = p_item->p_input->i_id;
 396         playlist_Unlock( THEPL );
 397         model->activateItem( index );
 398     }
 399 }
 400
 401 void StandardPLPanel::browseInto( input_item_t *p_input )
 402 {
 403
 404     if( p_input->i_id != lastActivatedId ) return;
 405
 406     playlist_Lock( THEPL );
 407
 408     playlist_item_t *p_item = playlist_ItemGetByInput( THEPL, p_input );
 409     if( !p_item )
 410     {
 411         playlist_Unlock( THEPL );
 412         return;
 413     }
 414
 415     QModelIndex index = model->index( p_item->i_id, 0 );
 416
 417     playlist_Unlock( THEPL );
 418
 419     if( currentView == treeView )
 420         treeView->setExpanded( index, true );
 421     else
 422         browseInto( index );
 423
 424     lastActivatedId = -1;
 425
 426 }