runtime/nepomuk/services/strigi/statuswidget.cpp

   1 /* This file is part of the KDE Project
   2    Copyright (c) 2008 Sebastian Trueg <trueg@kde.org>
   3
   4    This library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public
   6    License version 2 as published by the Free Software Foundation.
   7
   8    This library is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11    Library General Public License for more details.
  12
  13    You should have received a copy of the GNU Library General Public License
  14    along with this library; see the file COPYING.LIB.  If not, write to
  15    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  16    Boston, MA 02110-1301, USA.
  17 */
  18
  19 #include "statuswidget.h"
  20 #include "indexscheduler.h"
  21
  22 #include <KCMultiDialog>
  23 #include <KIcon>
  24 #include <KLocale>
  25 #include <KTitleWidget>
  26 #include <KStandardDirs>
  27 #include <KIO/NetAccess>
  28 #include <kio/directorysizejob.h>
  29
  30 #include <Soprano/Model>
  31 #include <Soprano/QueryResultIterator>
  32 #include <Soprano/Vocabulary/Xesam>
  33
  34 #include <QtCore/QTimer>
  35
  36
  37 Nepomuk::StatusWidget::StatusWidget( Soprano::Model* model, IndexScheduler* scheduler, QWidget* parent )
  38     : KDialog( parent ),
  39       m_model( model ),
  40       m_indexScheduler( scheduler ),
  41       m_connected( false ),
  42       m_updating( false ),
  43       m_updateRequested( false )
  44 {
  45     setupUi( mainWidget() );
  46
  47     setCaption( m_title->text() );
  48     setButtons( Ok|User1 );
  49     setDefaultButton( Ok );
  50     setButtonGuiItem( User1, KGuiItem( i18n( "Configure" ), KIcon( "configure" ) ) );
  51
  52     m_title->setPixmap( KIcon( "nepomuk" ).pixmap( 32, 32 ) );
  53
  54     m_updateTimer.setSingleShot( true );
  55     m_updateTimer.setInterval( 10*1000 ); // do not update multiple times in 10 seconds
  56     connect( &m_updateTimer, SIGNAL( timeout() ),
  57              this, SLOT( slotUpdateTimeout() ) );
  58
  59     connect( this, SIGNAL( user1Clicked() ),
  60              this, SLOT( slotConfigure() ) );
  61 }
  62
  63
  64 Nepomuk::StatusWidget::~StatusWidget()
  65 {
  66 }
  67
  68
  69 void Nepomuk::StatusWidget::slotUpdateStrigiStatus()
  70 {
  71     bool indexing = m_indexScheduler->isIndexing();
  72     bool suspended = m_indexScheduler->isSuspended();
  73     QString folder = m_indexScheduler->currentFolder();
  74
  75     if ( suspended )
  76         m_labelStrigiState->setText( i18n( "File indexer is suspended" ) );
  77     else if ( indexing )
  78         m_labelStrigiState->setText( i18n( "Strigi is currently indexing files in folder %1", folder ) );
  79     else
  80         m_labelStrigiState->setText( i18n( "File indexer is idle" ) );
  81 }
  82
  83
  84 void Nepomuk::StatusWidget::slotUpdateStoreStatus()
  85 {
  86     if ( !m_updating && !m_updateTimer.isActive() ) {
  87         m_updating = true;
  88
  89         // update storage size
  90         // ========================================
  91         QString path = KStandardDirs::locateLocal( "data", "nepomuk/repository/main/", false );
  92         KIO::DirectorySizeJob* job = KIO::directorySize( path );
  93         if ( KIO::NetAccess::synchronousRun( job, this ) )
  94             m_labelStoreSize->setText( KIO::convertSize( job->totalSize() ) );
  95         else
  96             m_labelStoreSize->setText( i18n( "Calculation failed" ) );
  97
  98
  99         // update file count
 100         // ========================================
 101         Soprano::QueryResultIterator it = m_model->executeQuery( QString( "select distinct ?r where { ?r a <%1> . }" )
 102                                                                  .arg( Soprano::Vocabulary::Xesam::File().toString() ),
 103                                                                  Soprano::Query::QueryLanguageSparql );
 104         int cnt = 0;
 105         while ( it.next() ) {
 106             // a bit of hacking to keep the GUI responsive
 107             // TODO: if we don't get aggregate functions in SPARQL soon, use a thread
 108             if ( cnt % 100 == 0 )
 109                 QApplication::processEvents();
 110             ++cnt;
 111         }
 112         m_labelFileCount->setText( i18np( "1 file in index", "%1 files in index", cnt ) );
 113
 114         m_updating = false;
 115
 116         // start the timer to avoid too many updates
 117         m_updateTimer.start();
 118     }
 119     else {
 120         m_updateRequested = true;
 121     }
 122 }
 123
 124
 125 void Nepomuk::StatusWidget::slotUpdateTimeout()
 126 {
 127     if ( m_updateRequested ) {
 128         m_updateRequested = false;
 129         slotUpdateStoreStatus();
 130     }
 131 }
 132
 133
 134 void Nepomuk::StatusWidget::slotConfigure()
 135 {
 136     KCMultiDialog dlg;
 137     dlg.addModule( "kcm_nepomuk" );
 138     dlg.exec();
 139 }
 140
 141 #include <QApplication>
 142 #include <QDesktopWidget>
 143
 144 // from kdialog.cpp since KDialog::centerOnScreen will simply do nothing on X11!
 145 static QRect screenRect( QWidget *widget, int screen )
 146 {
 147     QDesktopWidget *desktop = QApplication::desktop();
 148     KConfig gc( "kdeglobals", KConfig::NoGlobals );
 149     KConfigGroup cg(&gc, "Windows" );
 150     if ( desktop->isVirtualDesktop() &&
 151          cg.readEntry( "XineramaEnabled", true ) &&
 152          cg.readEntry( "XineramaPlacementEnabled", true ) ) {
 153
 154         if ( screen < 0 || screen >= desktop->numScreens() ) {
 155             if ( screen == -1 )
 156                 screen = desktop->primaryScreen();
 157             else if ( screen == -3 )
 158                 screen = desktop->screenNumber( QCursor::pos() );
 159             else
 160                 screen = desktop->screenNumber( widget );
 161         }
 162
 163         return desktop->availableGeometry( screen );
 164     } else
 165         return desktop->geometry();
 166 }
 167
 168 void Nepomuk::StatusWidget::showEvent( QShowEvent* event )
 169 {
 170     if ( !m_connected ) {
 171         connect( m_indexScheduler, SIGNAL( indexingStarted() ),
 172                  this, SLOT( slotUpdateStrigiStatus() ) );
 173         connect( m_indexScheduler, SIGNAL( indexingStopped() ),
 174                  this, SLOT( slotUpdateStrigiStatus() ) );
 175         connect( m_indexScheduler, SIGNAL( indexingFolder(QString) ),
 176                  this, SLOT( slotUpdateStrigiStatus() ) );
 177
 178         connect( m_model, SIGNAL( statementsAdded() ),
 179                  this, SLOT( slotUpdateStoreStatus() ) );
 180         connect( m_model, SIGNAL( statementsRemoved() ),
 181                  this, SLOT( slotUpdateStoreStatus() ) );
 182
 183         m_connected = true;
 184     }
 185
 186     QTimer::singleShot( 0, this, SLOT( slotUpdateStoreStatus() ) );
 187     QTimer::singleShot( 0, this, SLOT( slotUpdateStrigiStatus() ) );
 188
 189     KDialog::showEvent( event );
 190
 191     QRect rect = screenRect( this, -1 );
 192     move( rect.center().x() - width() / 2,
 193           rect.center().y() - height() / 2 );
 194     //KDialog::centerOnScreen( this );
 195 }
 196
 197
 198 void Nepomuk::StatusWidget::hideEvent( QHideEvent* event )
 199 {
 200     if ( m_connected ) {
 201         m_indexScheduler->disconnect( this );
 202         m_model->disconnect( this );
 203         m_connected = false;
 204     }
 205
 206     KDialog::hideEvent( event );
 207 }
 208
 209 #include "statuswidget.moc"