kaddressbook/quicksearchwidget.cpp

   1 /*
   2     This file is part of KAddressBook.
   3
   4     Copyright (c) 2009 Tobias Koenig <tokoe@kde.org>
   5
   6     This library is free software; you can redistribute it and/or modify it
   7     under the terms of the GNU Library General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or (at your
   9     option) any later version.
  10
  11     This library is distributed in the hope that it will be useful, but WITHOUT
  12     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
  14     License for more details.
  15
  16     You should have received a copy of the GNU Library General Public License
  17     along with this library; see the file COPYING.LIB.  If not, write to the
  18     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19     02110-1301, USA.
  20 */
  21
  22 #include "quicksearchwidget.h"
  23
  24 #include <QtCore/QTimer>
  25 #include <QtGui/QKeyEvent>
  26 #include <QtGui/QVBoxLayout>
  27
  28 #include <klineedit.h>
  29 #include <klocale.h>
  30
  31 QuickSearchWidget::QuickSearchWidget( QWidget *parent )
  32   : QWidget( parent )
  33 {
  34   QVBoxLayout *layout = new QVBoxLayout( this );
  35   layout->setMargin( 0 );
  36
  37   mEdit = new KLineEdit;
  38   mEdit->setClickMessage( i18nc( "Search contacts in list", "Search" ) );
  39   mEdit->setClearButtonShown( true );
  40
  41   mEdit->installEventFilter( this );
  42
  43   layout->addWidget( mEdit );
  44
  45   mTimer = new QTimer( this );
  46
  47   connect( mEdit, SIGNAL( textChanged( const QString& ) ), SLOT( resetTimer() ) );
  48   connect( mTimer, SIGNAL( timeout() ), SLOT( delayedTextChanged() ) );
  49 }
  50
  51
  52 QuickSearchWidget::~QuickSearchWidget()
  53 {
  54 }
  55
  56 QSize QuickSearchWidget::sizeHint() const
  57 {
  58   const QSize size = mEdit->sizeHint();
  59   return QSize( 200, size.height() );
  60 }
  61
  62 void QuickSearchWidget::resetTimer()
  63 {
  64   mTimer->stop();
  65   mTimer->start( 500 );
  66 }
  67
  68 void QuickSearchWidget::delayedTextChanged()
  69 {
  70   mTimer->stop();
  71   emit filterStringChanged( mEdit->text() );
  72 }
  73
  74 void QuickSearchWidget::keyPressEvent( QKeyEvent *event )
  75 {
  76   if ( event->key() == Qt::Key_Down ) {
  77     event->accept();
  78     delayedTextChanged();
  79     emit arrowDownKeyPressed();
  80     return;
  81   }
  82
  83   QWidget::keyPressEvent( event );
  84 }
  85
  86 #include "quicksearchwidget.moc"