/[svn]/qsampler/trunk/src/qsamplerInstrumentList.cpp
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revision 969 by capela, Wed Dec 6 19:38:02 2006 UTC revision 1499 by capela, Tue Nov 20 16:48:04 2007 UTC
# Line 1  Line 1 
1  // qsamplerInstrumentList.cpp  // qsamplerInstrumentList.cpp
2  //  //
3  /****************************************************************************  /****************************************************************************
4     Copyright (C) 2003-2005, rncbc aka Rui Nuno Capela. All rights reserved.     Copyright (C) 2003-2007, rncbc aka Rui Nuno Capela. All rights reserved.
5       Copyright (C) 2007, Christian Schoenebeck
6     This program is free software; you can redistribute it and/or  
7     modify it under the terms of the GNU General Public License     This program is free software; you can redistribute it and/or
8     as published by the Free Software Foundation; either version 2     modify it under the terms of the GNU General Public License
9     of the License, or (at your option) any later version.     as published by the Free Software Foundation; either version 2
10       of the License, or (at your option) any later version.
11     This program is distributed in the hope that it will be useful,  
12     but WITHOUT ANY WARRANTY; without even the implied warranty of     This program is distributed in the hope that it will be useful,
13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the     but WITHOUT ANY WARRANTY; without even the implied warranty of
14     GNU General Public License for more details.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15       GNU General Public License for more details.
16     You should have received a copy of the GNU General Public License  
17     along with this program; if not, write to the Free Software     You should have received a copy of the GNU General Public License
18     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.     along with this program; if not, write to the Free Software
19       Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20  *****************************************************************************/  
21    *****************************************************************************/
22  #include "qsamplerAbout.h"  
23  #include "qsamplerInstrumentList.h"  #include "qsamplerAbout.h"
24    #include "qsamplerInstrumentList.h"
25  #include "qsamplerInstrument.h"  
26  #include "qsamplerInstrumentForm.h"  #include "qsamplerInstrument.h"
27    #include "qsamplerInstrumentForm.h"
28  #include "qsamplerMainForm.h"  
29    #include "qsamplerOptions.h"
30  #include <qaction.h>  #include "qsamplerMainForm.h"
31  #include <qfileinfo.h>  
32  #include <qpopupmenu.h>  #include <QApplication>
33    #include <QMessageBox>
34  // Needed for lroundf()  #include <QMenu>
35  #include <math.h>  #include <QAction>
36    #include <QCursor>
37    #include <QFileInfo>
38  //----------------------------------------------------------------------  
39  // class qsamplerInstrumentGroup -- custom group list view item.  // Needed for lroundf()
40  //  #include <math.h>
41    
42  // Constructors.  #ifndef CONFIG_ROUND
43  qsamplerInstrumentGroup::qsamplerInstrumentGroup (  static inline long lroundf ( float x )
44          qsamplerInstrumentList *pListView, const QString& sName,  {
45          QListViewItem *pItemAfter )          if (x >= 0.0f)
46          : QListViewItem(pListView, pItemAfter ? pItemAfter : pListView->lastItem())                  return long(x + 0.5f);
47  {          else
48          QListViewItem::setRenameEnabled(0, true);                  return long(x - 0.5f);
49    }
50          QListViewItem::setPixmap(0, QPixmap::fromMimeSource("itemGroup.png"));  #endif
51          QListViewItem::setText(0, sName);  
52  }  using namespace QSampler;
53    
54    
55  qsamplerInstrumentGroup::qsamplerInstrumentGroup (  //-------------------------------------------------------------------------
56          qsamplerInstrumentGroup *pGroupItem, const QString& sName )  // MidiInstrumentsModel - data model for MIDI prog mappings (used for QTableView)
57          : QListViewItem(pGroupItem, sName)  //
58  {  
59          QListViewItem::setRenameEnabled(0, true);  MidiInstrumentsModel::MidiInstrumentsModel(QObject* parent) : QAbstractTableModel(parent) {
60        m_iMidiMap = LSCP_MIDI_MAP_ALL;
61          QListViewItem::setPixmap(0, QPixmap::fromMimeSource("itemGroup.png"));  }
62  }  
63    int MidiInstrumentsModel::rowCount(const QModelIndex& /*parent*/) const {
64        if (m_iMidiMap == LSCP_MIDI_MAP_ALL) {
65  // Default destructor.          int n = 0;
66  qsamplerInstrumentGroup::~qsamplerInstrumentGroup (void)          for (InstrumentsMap::const_iterator itMap = instruments.begin(); itMap != instruments.end(); ++itMap)
67  {              n += (*itMap).size();
68  }          return n;
69        }
70        InstrumentsMap::const_iterator itMap = instruments.find(m_iMidiMap);
71  // Instance accessors.      if (itMap == instruments.end()) return 0;
72  void qsamplerInstrumentGroup::setName ( const QString& sName )      return (*itMap).size();
73  {  }
74          QListViewItem::setText(0, sName);  
75  }  int MidiInstrumentsModel::columnCount(const QModelIndex& /*parent*/) const {
76        return 9;
77    }
78  QString qsamplerInstrumentGroup::name (void) const  
79  {  QVariant MidiInstrumentsModel::data(const QModelIndex &index, int role) const {
80          return QListViewItem::text(0);      if (!index.isValid()) return QVariant();
81  }  
82        const qsamplerInstrument* pInstr = NULL;
83    
84  qsamplerInstrumentGroup *qsamplerInstrumentGroup::groupItem (void) const      if (m_iMidiMap == LSCP_MIDI_MAP_ALL) {
85  {          int n = 0;
86          QListViewItem *pParent = QListViewItem::parent();          for (InstrumentsMap::const_iterator itMap = instruments.begin(); itMap != instruments.end(); ++itMap) {
87          while (pParent && pParent->rtti() != qsamplerInstrumentList::Group)              n += (*itMap).size();
88                  pParent = pParent->parent();              if (index.row() < n)
89          return static_cast<qsamplerInstrumentGroup *> (pParent);                  pInstr = &(*itMap)[index.row() + (*itMap).size() - n];
90  }          }
91        } else {
92            // resolve MIDI instrument map
93  qsamplerInstrumentList *qsamplerInstrumentGroup::listView (void) const          InstrumentsMap::const_iterator itMap = instruments.find(m_iMidiMap);
94  {          if (itMap == instruments.end()) return QVariant();
95          return static_cast<qsamplerInstrumentList *> (QListViewItem::listView());          // resolve instrument in that map
96  }          if (index.row() >= (*itMap).size()) return QVariant();
97            pInstr = &(*itMap)[index.row()];
98        }
99  // To show up whether its open or not.  
100  void qsamplerInstrumentGroup::setOpen ( bool bOpen )      if (!pInstr) return QVariant();
101  {  
102          // Set the proper pixmap of this...      if (role == Qt::UserRole) {
103          if (rtti() == qsamplerInstrumentList::Group) {          return QVariant::fromValue((void*)pInstr);
104                  QListViewItem::setPixmap(0, QPixmap::fromMimeSource(      }
105                          bOpen ? "itemGroupOpen.png" : "itemGroup.png"));  
106          }      if (role == Qt::DisplayRole) {
107          // Open it up...          switch (index.column()) {
108          QListViewItem::setOpen(bOpen);              case 0: return pInstr->name();
109                case 1: return QVariant::fromValue(pInstr->map());
110          // All ancestors should be also visible.              case 2: return QVariant::fromValue(pInstr->bank());
111          if (bOpen && QListViewItem::parent())              case 3: return QVariant::fromValue(pInstr->prog());
112                  QListViewItem::parent()->setOpen(true);              case 4: return pInstr->engineName();
113  }              case 5: return pInstr->instrumentFile();
114                case 6: return QVariant::fromValue(pInstr->instrumentNr());
115                case 7: return QString::number(pInstr->volume() * 100.0) + " %";
116  // To virtually distinguish between list view items.              case 8: {
117  int qsamplerInstrumentGroup::rtti (void) const                  switch (pInstr->loadMode()) {
118  {                      case 3: return QObject::tr("Persistent");
119          return qsamplerInstrumentList::Group;                      case 2: return QObject::tr("On Demand Hold");
120  }                      case 1: return QObject::tr("On Demand");
121                        default: return QVariant();
122                    }
123  //----------------------------------------------------------------------              }
124  // class qsamplerInstrumentItem -- custom file list view item.              default: return QVariant();
125  //          }
126        }
127  // Constructors.  
128  qsamplerInstrumentItem::qsamplerInstrumentItem (      return QVariant();
129          qsamplerInstrumentList *pListView,  }
130          qsamplerInstrument *pInstrument,  
131          QListViewItem *pItemAfter )  QVariant MidiInstrumentsModel::headerData(int section, Qt::Orientation orientation, int role) const {
132          : qsamplerInstrumentGroup(pListView, pInstrument->name(), pItemAfter)      if (orientation != Qt::Horizontal || role != Qt::DisplayRole)
133  {          return QVariant();
134          m_pInstrument = pInstrument;  
135        switch (section) {
136          update();          case 0: return tr("Name");
137  }          case 1: return tr("Map");
138            case 2: return tr("Bank");
139  qsamplerInstrumentItem::qsamplerInstrumentItem (          case 3: return tr("Prog");
140          qsamplerInstrumentGroup *pGroupItem,          case 4: return tr("Engine");
141          qsamplerInstrument *pInstrument )          case 5: return tr("File");
142          : qsamplerInstrumentGroup(pGroupItem, pInstrument->name())          case 6: return tr("Nr");
143  {          case 7: return tr("Vol");
144          m_pInstrument = pInstrument;          case 8: return tr("Mode");
145            default: return QVariant();
146          update();      }
147  }  }
148    
149    qsamplerInstrument* MidiInstrumentsModel::addInstrument(int iMap, int iBank, int iProg) {
150  // Default destructor.      // Check it there's already one instrument item
151  qsamplerInstrumentItem::~qsamplerInstrumentItem (void)      // with the very same key (bank, program);
152  {      // if yes, just remove it without prejudice...
153          if (m_pInstrument)      for (int i = 0; i < instruments[iMap].size(); i++) {
154                  delete m_pInstrument;          if (
155  }              instruments[iMap][i].bank() == iBank &&
156                instruments[iMap][i].prog() == iProg
157            ) {
158  // To virtually distinguish between list view items.              instruments[iMap].removeAt(i);
159  int qsamplerInstrumentItem::rtti (void) const              break;
160  {          }
161          return qsamplerInstrumentList::Item;      }
162  }  
163        // resolve the appropriate place, we keep the list sorted that way ...
164        int i = 0;
165  // Payload accessor.      for (; i < instruments[iMap].size(); i++)
166  qsamplerInstrument *qsamplerInstrumentItem::instrument (void) const          if (
167  {              iBank > instruments[iMap][i].bank() ||
168          return m_pInstrument;              ( iBank == instruments[iMap][i].bank() &&
169  }                iProg > instruments[iMap][i].prog() )
170            ) break;
171    
172  // Item refreshment.      instruments[iMap].insert(i, qsamplerInstrument(iMap, iBank, iProg));
173  void qsamplerInstrumentItem::update (void)      qsamplerInstrument& instr = instruments[iMap][i];
174  {      if (!instr.getInstrument())
175          QListViewItem::setPixmap(0, QPixmap::fromMimeSource("itemFile.png"));          instruments[iMap].removeAt(i);
176    
177          const QString s = "-";      return &instr;
178          if (m_pInstrument) {  }
179                  setText(0, m_pInstrument->name());  
180                  setText(1, QString::number(m_pInstrument->bank()));  void MidiInstrumentsModel::removeInstrument(const qsamplerInstrument& instrument) {
181                  setText(2, QString::number(m_pInstrument->program()));      const int iMap  = instrument.map();
182                  setText(3, m_pInstrument->engineName());      const int iBank = instrument.bank();
183                  setText(4, QFileInfo(m_pInstrument->instrumentFile()).fileName());      const int iProg = instrument.prog();
184                  setText(5, QString::number(m_pInstrument->instrumentNr()));      for (int i = 0; i < instruments[iMap].size(); i++) {
185                  setText(6, QString::number(::lroundf(100.0f * m_pInstrument->volume())));          if (
186                  QString sLoadMode = s;              instruments[iMap][i].bank() == iBank &&
187                  switch (m_pInstrument->loadMode()) {              instruments[iMap][i].prog() == iProg
188                  case 3:          ) {
189                          sLoadMode = QObject::tr("Persistent");              instruments[iMap].removeAt(i);
190                          break;              break;
191                  case 2:          }
192                          sLoadMode = QObject::tr("On Demand Hold");      }
193                          break;  }
194                  case 1:  
195                          sLoadMode = QObject::tr("On Demand");  // reposition the instrument in the model (called when map/bank/prg changed)
196                          break;  void MidiInstrumentsModel::resort(const qsamplerInstrument instrument) {
197                  }      const int iMap  = instrument.map();
198                  setText(7, sLoadMode);      const int iBank = instrument.bank();
199          } else {      const int iProg = instrument.prog();
200                  for (int i = 0; i < listView()->columns(); i++)      // remove given instrument from its current list
201                          setText(i, s);      removeInstrument(instrument);
202          }      // re-add the instrument
203  }      addInstrument(iMap, iBank, iProg);
204    }
205    
206  //----------------------------------------------------------------------------  void MidiInstrumentsModel::setMidiMap(int iMidiMap) {
207  // qsamplerInstrumentList -- MIDI instrument list view.      if (iMidiMap < 0)
208  //          iMidiMap = LSCP_MIDI_MAP_ALL;
209    
210  // Constructor.      m_iMidiMap = iMidiMap;
211  qsamplerInstrumentList::qsamplerInstrumentList (  }
212          QWidget *pParent, const char *pszName )  
213          : QListView(pParent, pszName)  int MidiInstrumentsModel::midiMap() const {
214  {      return m_iMidiMap;
215  //  QListView::setRootIsDecorated(true);  }
216          QListView::setResizeMode(QListView::NoColumn);  
217  //      QListView::setAcceptDrops(true);  void MidiInstrumentsModel::refresh() {
218          QListView::setDragAutoScroll(true);          instruments.clear();
219          QListView::setSizePolicy(  
220                  QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding));          MainForm* pMainForm = MainForm::getInstance();
221  //      QListView::setShowToolTips(false);          if (pMainForm == NULL)
222          QListView::setSortColumn(-1);                  return;
223            if (pMainForm->client() == NULL)
224          QListView::addColumn(tr("Name"));                  return;
225          QListView::addColumn(tr("Bank"));  
226          QListView::addColumn(tr("Prog"));          QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
227          QListView::addColumn(tr("Engine"));  
228          QListView::addColumn(tr("File"));          // Load the whole bunch of instrument items...
229          QListView::addColumn(tr("Nr"));          lscp_midi_instrument_t* pInstrs
230          QListView::addColumn(tr("Vol"));                  = ::lscp_list_midi_instruments(pMainForm->client(), m_iMidiMap);
231          QListView::addColumn(tr("Mode"));          for (int iInstr = 0; pInstrs && pInstrs[iInstr].map >= 0; ++iInstr) {
232                    const int iMap  = pInstrs[iInstr].map;
233          QListView::setColumnAlignment(1, Qt::AlignHCenter);     // Bank                  const int iBank = pInstrs[iInstr].bank;
234          QListView::setColumnAlignment(2, Qt::AlignHCenter);     // Prog                  const int iProg = pInstrs[iInstr].prog;
235          QListView::setColumnAlignment(5, Qt::AlignHCenter);     // Nr                  addInstrument(iMap, iBank, iProg);
236          QListView::setColumnAlignment(6, Qt::AlignHCenter);     // Vol                  // Try to keep it snappy :)
237                    QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
238          QListView::setColumnWidth(0, 60);       // Name          }
239          QListView::setColumnWidth(0, 120);      // File  
240            QApplication::restoreOverrideCursor();
241          m_pNewGroupAction = new QAction(tr("New &Group"), tr("Ctrl+G"), this);  
242          m_pNewItemAction  = new QAction(tr("New &Instrument..."), tr("Ctrl+I"), this);          if (pInstrs == NULL && ::lscp_client_get_errno(pMainForm->client())) {
243          m_pEditItemAction = new QAction(tr("&Edit..."), tr("Ctrl+E"), this);                  pMainForm->appendMessagesClient("lscp_list_midi_instruments");
244          m_pRenameAction   = new QAction(tr("&Rename"), tr("Ctrl+R"), this);                  pMainForm->appendMessagesError(tr("Could not get current list of MIDI instrument mappings.\n\nSorry."));
245          m_pDeleteAction   = new QAction(tr("&Delete"), tr("Ctrl+D"), this);          }
246          m_pRefreshAction  = new QAction(tr("Re&fresh"), tr("Ctrl+F"), this);  
247            // inform the outer world (QTableView) that our data changed
248          QObject::connect(m_pNewGroupAction,          QAbstractTableModel::reset();
249                  SIGNAL(activated()),  }
250                  SLOT(newGroupSlot()));  
251          QObject::connect(m_pNewItemAction,  
252                  SIGNAL(activated()),  //-------------------------------------------------------------------------
253                  SLOT(newItemSlot()));  // MidiInstrumentsDelegate - table cell renderer for MIDI prog mappings
254          QObject::connect(m_pEditItemAction,  // (doesn't actually do anything ATM, but is already there for a future
255                  SIGNAL(activated()),  // cell editor widget implementation)
256                  SLOT(editItemSlot()));  
257          QObject::connect(m_pRenameAction,  MidiInstrumentsDelegate::MidiInstrumentsDelegate(QObject* parent) : QItemDelegate(parent) {
258                  SIGNAL(activated()),  }
259                  SLOT(renameSlot()));  
260          QObject::connect(m_pDeleteAction,  QWidget* MidiInstrumentsDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const {
261                  SIGNAL(activated()),      return QItemDelegate::createEditor(parent, option, index);
262                  SLOT(deleteSlot()));      //return new QLabel(index.model()->data(index, Qt::DisplayRole).toString(), parent);
263          QObject::connect(m_pRefreshAction,  }
264                  SIGNAL(activated()),  
265                  SLOT(refresh()));  void MidiInstrumentsDelegate::setEditorData(QWidget* /*editor*/, const QModelIndex& /*index*/) const {
266    }
267          QObject::connect(this,  
268                  SIGNAL(selectionChanged()),  void MidiInstrumentsDelegate::setModelData(QWidget* /*editor*/, QAbstractItemModel* /*model*/, const QModelIndex& /*index*/) const {
269                  SLOT(selectionChangedSlot()));  }
270          QObject::connect(this,  
271                  SIGNAL(doubleClicked(QListViewItem*, const QPoint&, int)),  void MidiInstrumentsDelegate::updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const {
272                  SLOT(activatedSlot(QListViewItem*)));      QItemDelegate::updateEditorGeometry(editor, option, index);
273          QObject::connect(this,      //if (editor) editor->setGeometry(option.rect);
274                  SIGNAL(returnPressed(QListViewItem*)),  }
275                  SLOT(activatedSlot(QListViewItem*)));  
276          QObject::connect(this,  
277                  SIGNAL(itemRenamed(QListViewItem*,int)),  // end of qsamplerInstrumentList.cpp
                 SLOT(renamedSlot(QListViewItem*)));  
   
         selectionChangedSlot();  
 }  
   
   
 // Default destructor.  
 qsamplerInstrumentList::~qsamplerInstrumentList (void)  
 {  
         delete m_pNewGroupAction;  
         delete m_pNewItemAction;  
         delete m_pEditItemAction;  
         delete m_pRenameAction;  
         delete m_pDeleteAction;  
 }  
   
   
 // Add a new instrument item, optionally under a given group.  
 qsamplerInstrumentItem *qsamplerInstrumentList::addItem (  
         qsamplerInstrument *pInstrument,  
         qsamplerInstrumentGroup *pParentGroup )  
 {  
         qsamplerInstrumentItem *pItem = findItem(pInstrument);  
         if (pItem == NULL) {  
                 if (pParentGroup)  
                         pItem = new qsamplerInstrumentItem(pParentGroup, pInstrument);  
                 else  
                         pItem = new qsamplerInstrumentItem(this, pInstrument);  
         }  
         QListView::setSelected(pItem, true);  
         return pItem;  
 }  
   
   
 // Add a new instrument group, optionally under another group.  
 qsamplerInstrumentGroup *qsamplerInstrumentList::addGroup (  
         const QString& sName, qsamplerInstrumentGroup *pParentGroup )  
 {  
         qsamplerInstrumentGroup *pGroup = findGroup(sName);  
         if (pGroup == NULL) {  
                 if (pParentGroup)  
                         pGroup = new qsamplerInstrumentGroup(pParentGroup, sName);  
                 else  
                         pGroup = new qsamplerInstrumentGroup(this, sName);  
         }  
         QListView::setSelected(pGroup, true);  
         return pGroup;  
 }  
   
   
 // Find a group item, given its name.  
 qsamplerInstrumentGroup *qsamplerInstrumentList::findGroup (  
         const QString& sName ) const  
 {  
         // Iterate all over the place to search for the group.  
         QListViewItemIterator iter((QListView *) this);  
         while (iter.current()) {  
                 QListViewItem *pItem = iter.current();  
                 if (pItem->rtti() == Group && pItem->text(0) == sName)  
                         return static_cast<qsamplerInstrumentGroup *> (pItem);  
                 ++iter;  
         }  
         // Not found.  
         return NULL;  
 }  
   
   
 // Find a file item, given its name.  
 qsamplerInstrumentItem *qsamplerInstrumentList::findItem (  
         qsamplerInstrument *pInstrument ) const  
 {  
         if (pInstrument == NULL)  
                 return NULL;  
   
         // Iterate all over the place to search for the group.  
         QListViewItemIterator iter((QListView *) this);  
         while (iter.current()) {  
                 QListViewItem *pListItem = iter.current();  
                 if (pListItem->rtti() == Item) {  
                         qsamplerInstrumentItem *pItem  
                                 = static_cast<qsamplerInstrumentItem *> (pListItem);  
                         if (pItem && pItem->instrument()  
                                 && pItem->instrument()->bank() == pInstrument->bank()  
                                 && pItem->instrument()->program() == pInstrument->program())  
                                 return pItem;  
                 }  
                 ++iter;  
         }  
         // Not found.  
         return NULL;  
 }  
   
   
 // Find and return the nearest group item...  
 qsamplerInstrumentGroup *qsamplerInstrumentList::groupItem (  
         QListViewItem *pItem ) const  
 {  
         while (pItem && pItem->rtti() != Group)  
                 pItem = pItem->parent();  
         return static_cast<qsamplerInstrumentGroup *> (pItem);  
 }  
   
   
 // Add a new group item below the current one.  
 void qsamplerInstrumentList::newGroupSlot (void)  
 {  
         qsamplerInstrumentGroup *pParentGroup  
                 = groupItem(QListView::selectedItem());  
         qsamplerInstrumentGroup *pNewGroup  
                 = addGroup(tr("New Group"), pParentGroup);  
         if (pParentGroup)  
                 pParentGroup->setOpen(true);  
         if (pNewGroup)  
                 pNewGroup->startRename(0);  
   
         selectionChangedSlot();  
 }  
   
   
 // Add a new instrument item below the current one.  
 void qsamplerInstrumentList::newItemSlot (void)  
 {  
         qsamplerInstrument *pInstrument = new qsamplerInstrument();  
   
         qsamplerInstrumentForm form(this);  
         form.setup(pInstrument);  
         if (!form.exec()) {  
                 delete pInstrument;  
                 return;  
         }  
   
         // Check it there's already one for the same key (bank, program)  
         qsamplerInstrumentItem *pItem = findItem(pInstrument);  
         if (pItem)  
                 delete pItem;  
   
         pInstrument->map();  
         emit instrumentsChanged();  
   
         qsamplerInstrumentGroup *pParentGroup  
                 = groupItem(QListView::selectedItem());  
         addItem(pInstrument, pParentGroup);  
         if (pParentGroup)  
                 pParentGroup->setOpen(true);  
   
         selectionChangedSlot();  
 }  
   
   
 // Edit current item below the current one.  
 void qsamplerInstrumentList::editItemSlot (void)  
 {  
         QListViewItem *pListItem = QListView::selectedItem();  
         if (pListItem == NULL)  
                 return;  
         if (pListItem->rtti() == Item) {  
                 qsamplerInstrumentItem *pItem  
                         = static_cast<qsamplerInstrumentItem *> (pListItem);  
                 if (pItem && pItem->instrument()) {  
                         qsamplerInstrumentForm form(this);  
                         form.setup(pItem->instrument());  
                         if (form.exec()) {  
                                 pItem->instrument()->map();  
                                 emit instrumentsChanged();  
                                 pItem->update();  
                         }  
                 }  
         }  
   
         selectionChangedSlot();  
 }  
   
   
 // Rename current group/item.  
 void qsamplerInstrumentList::renameSlot (void)  
 {  
         QListViewItem *pListItem = QListView::selectedItem();  
         if (pListItem)  
                 pListItem->startRename(0);  
   
         selectionChangedSlot();  
 }  
   
   
 // Remove current group/item.  
 void qsamplerInstrumentList::deleteSlot (void)  
 {  
         QListViewItem *pListItem = QListView::selectedItem();  
         if (pListItem) {  
                 if (pListItem->rtti() == Item) {  
                         qsamplerInstrumentItem *pItem  
                                 = static_cast<qsamplerInstrumentItem *> (pListItem);  
                         if (pItem && pItem->instrument()) {  
                                 pItem->instrument()->unmap();  
                                 emit instrumentsChanged();  
                         }  
                 }  
                 delete pListItem;  
         }  
   
         selectionChangedSlot();  
 }  
   
   
 // In-place selection slot.  
 void qsamplerInstrumentList::selectionChangedSlot (void)  
 {  
         qsamplerMainForm *pMainForm = qsamplerMainForm::getInstance();  
         QListViewItem *pListItem = QListView::selectedItem();  
         bool bEnabled = (pMainForm && pMainForm->client());  
         m_pNewItemAction->setEnabled(bEnabled);  
         bEnabled = (bEnabled && pListItem != NULL);  
         m_pEditItemAction->setEnabled(bEnabled && pListItem->rtti() == Item);  
         m_pRenameAction->setEnabled(bEnabled);  
         m_pDeleteAction->setEnabled(bEnabled);  
 }  
   
   
 // In-place activation slot.  
 void qsamplerInstrumentList::activatedSlot ( QListViewItem *pListItem )  
 {  
         // FIXME: Hope the list view item is the one selected.  
         if (pListItem->rtti() == Item)  
                 editItemSlot();  
 }  
   
   
 // In-place aliasing slot.  
 void qsamplerInstrumentList::renamedSlot ( QListViewItem *pListItem )  
 {  
         if (pListItem->rtti() == Item) {  
                 qsamplerInstrumentItem *pItem  
                         = static_cast<qsamplerInstrumentItem *> (pListItem);  
                 if (pItem && pItem->instrument()) {  
                         pItem->instrument()->setName(pListItem->text(0));  
                         pItem->instrument()->map();  
                         emit instrumentsChanged();  
                         pItem->update();  
                 }  
         }  
 }  
   
   
 // Context menu request event handler.  
 void qsamplerInstrumentList::contextMenuEvent (  
         QContextMenuEvent *pContextMenuEvent )  
 {  
         QPopupMenu menu(this);  
   
         // Construct context menu.  
         m_pNewItemAction->addTo(&menu);  
 //      m_pNewGroupAction->addTo(&menu);  
         menu.insertSeparator();  
         m_pEditItemAction->addTo(&menu);  
         m_pRenameAction->addTo(&menu);  
         m_pDeleteAction->addTo(&menu);  
         menu.insertSeparator();  
         m_pRefreshAction->addTo(&menu);  
   
         menu.exec(pContextMenuEvent->globalPos());  
 }  
   
   
 // General reloader.  
 void qsamplerInstrumentList::refresh (void)  
 {  
         clear();  
   
         qsamplerMainForm *pMainForm = qsamplerMainForm::getInstance();  
         if (pMainForm == NULL)  
                 return;  
         if (pMainForm->client() == NULL)  
                 return;  
   
         qsamplerInstrumentItem *pItem = NULL;  
         lscp_midi_instrument_t *pInstrs  
                 = ::lscp_list_midi_instruments(pMainForm->client());  
         for (int iInstr = 0; pInstrs && pInstrs[iInstr].program >= 0; ++iInstr) {  
                 int iBank = (pInstrs[iInstr].bank_msb << 7) | pInstrs[iInstr].bank_lsb;  
                 int iProgram = pInstrs[iInstr].program;  
                 qsamplerInstrument *pInstrument  
                         = new qsamplerInstrument(iBank, iProgram);  
                 if (pInstrument->get())  
                         pItem = new qsamplerInstrumentItem(this, pInstrument, pItem);  
         }  
   
         if (pInstrs == NULL && ::lscp_client_get_errno(pMainForm->client())) {  
                 pMainForm->appendMessagesClient("lscp_list_midi_instruments");  
                 pMainForm->appendMessagesError(tr("Could not get current list of MIDI instrument mappings.\n\nSorry."));  
         }  
   
         selectionChangedSlot();  
 }  
   
   
 // end of qsamplerInstrumentList.cpp  
   
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