kstars/kstars/finddialog.cpp

   1 /***************************************************************************
   2                           finddialog.cpp  -  K Desktop Planetarium
   3                              -------------------
   4     begin                : Wed Jul 4 2001
   5     copyright            : (C) 2001 by Jason Harris
   6     email                : jharris@30doradus.org
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #include <qlayout.h>
  19 #include <qlineedit.h>
  20 #include <qlabel.h>
  21 #include <qcombobox.h>
  22 #include <qlistbox.h>
  23 #include <qtimer.h>
  24
  25 #include <kmessagebox.h>
  26
  27 #include "finddialog.h"
  28 #include "kstars.h"
  29 #include "kstarsdata.h"
  30 #include "Options.h"
  31 #include "skyobject.h"
  32 #include "skyobjectname.h"
  33 #include "objectnamelist.h"
  34
  35
  36 FindDialog::FindDialog( QWidget* parent ) :
  37                 KDialogBase( KDialogBase::Plain, i18n( "Find Object" ), Ok|Cancel, Ok, parent ),
  38                 vlay(0), hlay(0), SearchList(0), SearchBox(0), filterTypeLabel(0), filterType(0),
  39                 currentitem(0)
  40 {
  41         QFrame *page = plainPage();
  42
  43 //Create Layout managers
  44         vlay = new QVBoxLayout( page, 2, 2 );
  45         hlay = new QHBoxLayout( 2 ); //this mgr will be added to vlay
  46
  47 //Create Widgets
  48         SearchBox = new QLineEdit( page, "SearchBox" );
  49
  50         filterTypeLabel = new QLabel( page, "filterTypeLabel" );
  51         filterTypeLabel->setAlignment( AlignRight );
  52         filterTypeLabel->setText( i18n( "Filter by type: " ) );
  53
  54         filterType = new QComboBox( page, "filterType" );
  55         filterType->setEditable( false );
  56         filterType->insertItem( i18n ("Any") );
  57         filterType->insertItem( i18n ("Stars") );
  58         //      filterType->insertItem( i18n ("Double Stars") );
  59         filterType->insertItem( i18n ("Solar System") );
  60         filterType->insertItem( i18n ("Open Clusters") );
  61         filterType->insertItem( i18n ("Glob. Clusters") );
  62         filterType->insertItem( i18n ("Gas. Nebulae") );
  63         filterType->insertItem( i18n ("Plan. Nebulae") );
  64         //      filterType->insertItem( i18n ("SN Remnants") );
  65         filterType->insertItem( i18n ("Galaxies") );
  66         filterType->insertItem( i18n ("Comets") );
  67         filterType->insertItem( i18n ("Asteroids") );
  68         filterType->insertItem( i18n ("Constellations") );
  69
  70         SearchList = new QListBox( page, "SearchList" );
  71         SearchList->setMinimumWidth( 256 );
  72         SearchList->setMinimumHeight( 320 );
  73         SearchList->setVScrollBarMode( QListBox::AlwaysOn );
  74         SearchList->setHScrollBarMode( QListBox::AlwaysOff );
  75
  76 //Pack Widgets into layout manager
  77         hlay->addWidget( filterTypeLabel, 0, 0 );
  78         hlay->addWidget( filterType, 0, 0 );
  79
  80         vlay->addWidget( SearchBox, 0, 0 );
  81         vlay->addSpacing( 12 );
  82         vlay->addWidget( SearchList, 0, 0 );
  83         vlay->addLayout( hlay, 0 );
  84
  85         vlay->activate();
  86
  87 // no item currently set
  88         currentitem = 0;
  89
  90 // no filters set
  91         Filter = 0;
  92
  93 //Connect signals to slots
  94 //      connect( this, SIGNAL( okClicked() ), this, SLOT( accept() ) ) ;
  95         connect( this, SIGNAL( cancelClicked() ), this, SLOT( reject() ) );
  96         connect( SearchBox, SIGNAL( textChanged( const QString & ) ), SLOT( filter() ) );
  97         connect( SearchBox, SIGNAL( returnPressed() ), SLOT( slotOk() ) );
  98         connect( filterType, SIGNAL( activated( int ) ), this, SLOT( setFilter( int ) ) );
  99         connect( SearchList, SIGNAL (selectionChanged  (QListBoxItem *)), SLOT (updateSelection (QListBoxItem *)));
 100         connect( SearchList, SIGNAL( doubleClicked ( QListBoxItem *  ) ), SLOT( slotOk() ) );
 101
 102         // first create and paint dialog and then load list
 103         QTimer::singleShot(0, this, SLOT( init() ));
 104 }
 105
 106 FindDialog::~FindDialog() {
 107         delete SearchList;
 108 }
 109
 110 void FindDialog::init() {
 111         SearchBox->clear();  // QLineEdit
 112         filterType->setCurrentItem(0);  // show all types of objects
 113         filter();
 114 }
 115
 116 void FindDialog::filter() {  //Filter the list of names with the string in the SearchBox
 117         KStars *p = (KStars *)parent();
 118
 119         SearchList->clear();
 120         ObjectNameList &ObjNames = p->data()->ObjNames;
 121         // check if latin names are used
 122         ObjNames.setLanguage( Options::useLatinConstellNames() );
 123
 124         QString searchFor = SearchBox->text().lower();
 125                 for ( SkyObjectName *name = ObjNames.first( searchFor ); name; name = ObjNames.next() ) {
 126                         if ( name->text().lower().startsWith( searchFor ) ) {
 127                                 new SkyObjectNameListItem ( SearchList, name );
 128 /*                              if ( i++ >= 5000 ) {              //Every 5000 name insertions,
 129                                         kapp->processEvents ( 50 );             //spend 50 msec processing KApplication events
 130                                         i = 0;
 131                                 }*/
 132                         }
 133                 }
 134         setListItemEnabled(); // Automatically highlight first item
 135         SearchBox->setFocus();  // set cursor to QLineEdit
 136 }
 137
 138 void FindDialog::filterByType() {
 139         KStars *p = (KStars *)parent();
 140
 141         SearchList->clear();    // QListBox
 142         QString searchFor = SearchBox->text().lower();  // search string
 143
 144         ObjectNameList &ObjNames = p->data()->ObjNames;
 145         // check if latin names are used
 146         ObjNames.setLanguage( Options::useLatinConstellNames() );
 147
 148         for ( SkyObjectName *name = ObjNames.first( searchFor ); name; name = ObjNames.next() ) {
 149                 //Special case: match SkyObject Type 0 with Filter==1 (stars)
 150                 if ( name->skyObject()->type() == Filter || (name->skyObject()->type() == 0 && Filter == 1 ) ) {
 151                         if ( name->text().lower().startsWith( searchFor ) ) {
 152                                 // for stars, don't show the ones below the faint limit
 153                                 if (Filter!=1 || name->skyObject()->mag() <= Options::magLimitDrawStar() ) {
 154                                         new SkyObjectNameListItem ( SearchList, name );
 155                                 }
 156                         }
 157                 }
 158         }
 159
 160         setListItemEnabled();    // Automatically highlight first item
 161         SearchBox->setFocus();  // set cursor to QLineEdit
 162 }
 163
 164 void FindDialog::setListItemEnabled() {
 165         SearchList->setSelected (0, true);
 166         if (!SearchList->isSelected (0))
 167                 updateSelection (0);
 168 }
 169
 170 void FindDialog::updateSelection (QListBoxItem *it) {
 171         currentitem = (SkyObjectNameListItem *) it;
 172         SearchBox->setFocus();  // set cursor to QLineEdit
 173 }
 174
 175 void FindDialog::setFilter( int f ) {
 176         // Translate the Listbox index to the correct SkyObject Type ID
 177         int f2( f ); // in most cases, they are the same number
 178         if ( f >= 7 ) f2 = f + 1; //need to skip unused "Supernova Remnant" Type at position 7
 179
 180         // check if filter was changed or if filter is still the same
 181         if ( Filter != f2 ) {
 182                 Filter = f2;
 183                 if ( Filter == 0 ) {  // any type will shown
 184                 // delete old connections and create new connections
 185                         disconnect( SearchBox, SIGNAL( textChanged( const QString & ) ), this, SLOT( filterByType() ) );
 186                         connect( SearchBox, SIGNAL( textChanged( const QString & ) ), SLOT( filter() ) );
 187                         filter();
 188                 }
 189                 else {
 190                 // delete old connections and create new connections
 191                         disconnect( SearchBox, SIGNAL( textChanged( const QString & ) ), this, SLOT( filter() ) );
 192                         connect( SearchBox, SIGNAL( textChanged( const QString & ) ), SLOT( filterByType() ) );
 193                         filterByType();
 194                 }
 195         }
 196 }
 197
 198 void FindDialog::slotOk() {
 199         //If no valid object selected, show a sorry-box.  Otherwise, emit accept()
 200         if ( currentItem() == 0 ) {
 201                 QString message = i18n( "No object named %1 found." ).arg( SearchBox->text() );
 202                 KMessageBox::sorry( 0, message, i18n( "Bad object name" ) );
 203         } else {
 204                 accept();
 205         }
 206 }
 207
 208 void FindDialog::keyPressEvent( QKeyEvent *e ) {
 209         switch( e->key() ) {
 210                 case Key_Down :
 211                         if ( SearchList->currentItem() < ((int) SearchList->count()) - 1 )
 212                                 SearchList->setCurrentItem( SearchList->currentItem() + 1 );
 213                         break;
 214
 215                 case Key_Up :
 216                         if ( SearchList->currentItem() )
 217                                 SearchList->setCurrentItem( SearchList->currentItem() - 1 );
 218                         break;
 219
 220                 case Key_Escape :
 221                         reject();
 222                         break;
 223
 224         }
 225 }
 226
 227 #include "finddialog.moc"