kaddressbook/contactswitcher.cpp

   1 /*
   2     Copyright (c) 2009 Tobias Koenig <tokoe@kde.org>
   3
   4     This library is free software; you can redistribute it and/or modify it
   5     under the terms of the GNU Library General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or (at your
   7     option) any later version.
   8
   9     This library is distributed in the hope that it will be useful, but WITHOUT
  10     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
  12     License for more details.
  13
  14     You should have received a copy of the GNU Library General Public License
  15     along with this library; see the file COPYING.LIB.  If not, write to the
  16     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17     02110-1301, USA.
  18 */
  19
  20 #include "contactswitcher.h"
  21
  22 #include <klocale.h>
  23
  24 #include <QtGui/QAbstractItemView>
  25 #include <QtGui/QHBoxLayout>
  26 #include <QtGui/QLabel>
  27 #include <QtGui/QPushButton>
  28
  29 ContactSwitcher::ContactSwitcher( QWidget *parent )
  30   : QWidget( parent ),
  31     mView( 0 )
  32 {
  33   QHBoxLayout *layout = new QHBoxLayout( this );
  34
  35   mPreviousButton = new QPushButton( i18nc( "Previous contact", "Previous" ) );
  36   mNextButton = new QPushButton( i18nc( "Next contact", "Next" ) );
  37   mStatusLabel = new QLabel();
  38
  39   layout->addWidget( mPreviousButton );
  40   layout->addWidget( mNextButton );
  41   layout->addStretch( 1 );
  42   layout->addWidget( mStatusLabel );
  43
  44   connect( mPreviousButton, SIGNAL(clicked()), SLOT(previousClicked()) );
  45   connect( mNextButton, SIGNAL(clicked()), SLOT(nextClicked()) );
  46 }
  47
  48 void ContactSwitcher::setView( QAbstractItemView *view )
  49 {
  50   mView = view;
  51
  52   Q_ASSERT_X( mView->model(), "ContactSwitcher::setView", "The view has no model set!" );
  53
  54   connect( mView->model(), SIGNAL(layoutChanged()), SLOT(updateStatus()) );
  55   connect( mView->model(), SIGNAL(rowsInserted(QModelIndex,int,int)), SLOT(updateStatus()) );
  56   connect( mView->model(), SIGNAL(rowsRemoved(QModelIndex,int,int)), SLOT(updateStatus()) );
  57
  58   updateStatus();
  59 }
  60
  61 void ContactSwitcher::nextClicked()
  62 {
  63   if ( !mView || !mView->model() )
  64     return;
  65
  66   const QModelIndex index = mView->selectionModel()->currentIndex();
  67
  68   int row = 0;
  69   if ( index.isValid() )
  70     row = index.row() + 1;
  71
  72   mView->selectionModel()->setCurrentIndex( mView->model()->index( row, 0 ),
  73                                             QItemSelectionModel::Rows |
  74                                             QItemSelectionModel::ClearAndSelect );
  75
  76   updateStatus();
  77 }
  78
  79 void ContactSwitcher::previousClicked()
  80 {
  81   if ( !mView || !mView->model() )
  82     return;
  83
  84   const QModelIndex index = mView->selectionModel()->currentIndex();
  85
  86   int row = 0;
  87   if ( index.isValid() )
  88     row = index.row() - 1;
  89
  90   mView->selectionModel()->setCurrentIndex( mView->model()->index( row, 0 ),
  91                                             QItemSelectionModel::Rows |
  92                                             QItemSelectionModel::ClearAndSelect );
  93
  94   updateStatus();
  95 }
  96
  97 void ContactSwitcher::updateStatus()
  98 {
  99   if ( !mView || !mView->model() )
 100     return;
 101
 102   const QModelIndex index = mView->selectionModel()->currentIndex();
 103
 104   int row = 0;
 105   if ( index.isValid() )
 106     row = index.row();
 107
 108   mPreviousButton->setEnabled( row != 0 );
 109   mNextButton->setEnabled( row != (mView->model()->rowCount() - 1) );
 110
 111   mStatusLabel->setText( i18n( "%1 out of %2", row + 1,  mView->model()->rowCount() ) );
 112 }
 113
 114 #include "contactswitcher.moc"