editors/sc-ide/widgets/cmd_line.cpp

   1 /*
   2     SuperCollider Qt IDE
   3     Copyright (c) 2010-2012 Jakob Leben
   4     Copyright (c) 2012 Tim Blechmann
   5     http://www.audiosynth.com
   6
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  20 */
  21
  22 #include "cmd_line.hpp"
  23 #include "main_window.hpp"
  24 #include "../core/main.hpp"
  25 #include "../core/settings/manager.hpp"
  26
  27 #include <QHBoxLayout>
  28 #include <QLabel>
  29 #include <QKeyEvent>
  30
  31 namespace ScIDE {
  32
  33 QString CmdLineEdit::symbolUnderCursor()
  34 {
  35     // TODO: select word under cursor
  36     return selectedText();
  37 }
  38
  39 bool CmdLineEdit::openDocumentation()
  40 {
  41     return Main::openDocumentation(symbolUnderCursor());
  42 }
  43
  44 void CmdLineEdit::openDefinition()
  45 {
  46     return Main::openDefinition(symbolUnderCursor(), MainWindow::instance());
  47 }
  48
  49 void CmdLineEdit::findReferences()
  50 {
  51     return Main::findReferences(symbolUnderCursor(), MainWindow::instance());
  52 }
  53
  54
  55 CmdLine::CmdLine( const QString &text, int maxHist ) :
  56     curHistory( -1 ),
  57     maxHistory( qMax(1,maxHist) )
  58 {
  59     QLabel *lbl = new QLabel(text);
  60
  61     expr = new CmdLineEdit;
  62
  63     QHBoxLayout *l = new QHBoxLayout;
  64     l->setContentsMargins(0,0,0,0);
  65     l->addWidget(lbl);
  66     l->addWidget(expr);
  67     setLayout( l );
  68
  69     expr->installEventFilter( this );
  70     setFocusProxy(expr);
  71
  72     applySettings( Main::settings() );
  73 }
  74
  75 void CmdLine::applySettings( Settings::Manager *settings )
  76 {
  77     QFont codeFont = settings->codeFont();
  78     expr->setFont( codeFont );
  79 }
  80
  81 bool CmdLine::eventFilter( QObject *, QEvent *e )
  82 {
  83     int type = e->type();
  84     if( type != QEvent::KeyPress ) return false;
  85
  86     QKeyEvent *ke = static_cast<QKeyEvent*>(e);
  87
  88     switch( ke->key() )
  89     {
  90     case Qt::Key_Return:
  91     case Qt::Key_Enter:
  92
  93         if( expr->text().isEmpty() ) return true;
  94
  95         emit invoked( expr->text(), false );
  96         if( history.count() == 0 || history[0] != expr->text() )
  97         {
  98             if( history.count() >= maxHistory ) history.removeAt( history.count() - 1 );
  99             history.prepend( expr->text() );
 100         }
 101         curHistory = -1;
 102         expr->clear();
 103         return true;
 104
 105     case Qt::Key_Up:
 106         if( curHistory < history.count() - 1 ) {
 107             expr->blockSignals(true);
 108             expr->setText( history[++curHistory] );
 109             expr->blockSignals(false);
 110         }
 111         return true;
 112
 113     case Qt::Key_Down:
 114         if( curHistory > -1 ) {
 115             --curHistory;
 116             expr->blockSignals(true);
 117             if( curHistory == -1 ) expr->clear();
 118             else expr->setText( history[curHistory] );
 119             expr->blockSignals(false);
 120         }
 121         return true;
 122
 123         default: return false;
 124     }
 125 }
 126
 127 } // namespace ScIDE