src/client/selectionmodelsynchronizer.h

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   2  *   Copyright (C) 2005-09 by the Quassel Project                          *
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  20
  21 #ifndef _SELECTIONMODELSYNCHRONIZER_H_
  22 #define _SELECTIONMODELSYNCHRONIZER_H_
  23
  24 #include <QObject>
  25 #include <QItemSelectionModel>
  26
  27 class QAbstractItemModel;
  28
  29 class SelectionModelSynchronizer : public QObject {
  30   Q_OBJECT
  31
  32 public:
  33   SelectionModelSynchronizer(QAbstractItemModel *parent = 0);
  34
  35   void synchronizeSelectionModel(QItemSelectionModel *selectionModel);
  36   void removeSelectionModel(QItemSelectionModel *selectionModel);
  37
  38   inline QAbstractItemModel *model() { return _model; }
  39   inline QItemSelectionModel *selectionModel() const { return const_cast<QItemSelectionModel *>(&_selectionModel); }
  40   inline QModelIndex currentIndex() const { return _selectionModel.currentIndex(); }
  41   inline QItemSelection currentSelection() const { return _selectionModel.selection(); }
  42
  43 private slots:
  44   void syncedCurrentChanged(const QModelIndex &current, const QModelIndex &previous);
  45   void syncedSelectionChanged(const QItemSelection &selected, const QItemSelection &previous);
  46
  47   void setCurrentIndex(const QModelIndex &index);
  48   void setCurrentSelection(const QItemSelection &selection);
  49
  50   void currentChanged(const QModelIndex &current, const QModelIndex &previous);
  51   void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
  52
  53   void selectionModelDestroyed(QObject *object);
  54
  55 private:
  56   QAbstractItemModel *_model;
  57   QItemSelectionModel _selectionModel;
  58   bool _changeCurrentEnabled;
  59   bool _changeSelectionEnabled;
  60
  61   bool checkBaseModel(QItemSelectionModel *model);
  62   QModelIndex mapFromSource(const QModelIndex &sourceIndex, const QItemSelectionModel *selectionModel);
  63   QItemSelection mapSelectionFromSource(const QItemSelection &sourceSelection, const QItemSelectionModel *selectionModel);
  64   QModelIndex mapToSource(const QModelIndex &index, QItemSelectionModel *selectionModel);
  65   QItemSelection mapSelectionToSource(const QItemSelection &selection, QItemSelectionModel *selectionModel);
  66
  67   QSet<QItemSelectionModel *> _selectionModels;
  68 };
  69
  70 #endif