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 "sc_symbol_references.hpp"
  25 #include "../core/main.hpp"
  26 #include "../core/settings/manager.hpp"
  27
  28 #include <QHBoxLayout>
  29 #include <QLabel>
  30 #include <QKeyEvent>
  31
  32 namespace ScIDE {
  33
  34 QString CmdLineEdit::symbolUnderCursor()
  35 {
  36     // TODO: select word under cursor
  37     return selectedText();
  38 }
  39
  40 bool CmdLineEdit::openDocumentation()
  41 {
  42     return Main::openDocumentation(symbolUnderCursor());
  43 }
  44
  45 void CmdLineEdit::openDefinition()
  46 {
  47     return Main::openDefinition(symbolUnderCursor(), MainWindow::instance());
  48 }
  49
  50 void CmdLineEdit::lookupReferences()
  51 {
  52     return Main::openReferences(symbolUnderCursor(), MainWindow::instance());
  53 }
  54
  55
  56 CmdLine::CmdLine( const QString &text, int maxHist ) :
  57     curHistory( -1 ),
  58     maxHistory( qMax(1,maxHist) )
  59 {
  60     QLabel *lbl = new QLabel(text);
  61
  62     expr = new CmdLineEdit;
  63
  64     QHBoxLayout *l = new QHBoxLayout;
  65     l->setContentsMargins(0,0,0,0);
  66     l->addWidget(lbl);
  67     l->addWidget(expr);
  68     setLayout( l );
  69
  70     expr->installEventFilter( this );
  71     setFocusProxy(expr);
  72
  73     applySettings( Main::settings() );
  74 }
  75
  76 void CmdLine::applySettings( Settings::Manager *settings )
  77 {
  78     QFont codeFont = settings->codeFont();
  79     expr->setFont( codeFont );
  80 }
  81
  82 bool CmdLine::eventFilter( QObject *, QEvent *e )
  83 {
  84     int type = e->type();
  85     if( type != QEvent::KeyPress ) return false;
  86
  87     QKeyEvent *ke = static_cast<QKeyEvent*>(e);
  88
  89     switch( ke->key() )
  90     {
  91     case Qt::Key_Return:
  92     case Qt::Key_Enter:
  93
  94         if( expr->text().isEmpty() ) return true;
  95
  96         emit invoked( expr->text(), false );
  97         if( history.count() == 0 || history[0] != expr->text() )
  98         {
  99             if( history.count() >= maxHistory ) history.removeAt( history.count() - 1 );
 100             history.prepend( expr->text() );
 101         }
 102         curHistory = -1;
 103         expr->clear();
 104         return true;
 105
 106     case Qt::Key_Up:
 107         if( curHistory < history.count() - 1 ) {
 108             expr->blockSignals(true);
 109             expr->setText( history[++curHistory] );
 110             expr->blockSignals(false);
 111         }
 112         return true;
 113
 114     case Qt::Key_Down:
 115         if( curHistory > -1 ) {
 116             --curHistory;
 117             expr->blockSignals(true);
 118             if( curHistory == -1 ) expr->clear();
 119             else expr->setText( history[curHistory] );
 120             expr->blockSignals(false);
 121         }
 122         return true;
 123
 124         default: return false;
 125     }
 126 }
 127
 128 } // namespace ScIDE