src/client/selectionmodelsynchronizer.h

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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 {
  31     Q_OBJECT
  32
  33 public:
  34     SelectionModelSynchronizer(QAbstractItemModel *parent = 0);
  35
  36     void synchronizeSelectionModel(QItemSelectionModel *selectionModel);
  37     void removeSelectionModel(QItemSelectionModel *selectionModel);
  38
  39     inline QAbstractItemModel *model() { return _model; }
  40     inline QItemSelectionModel *selectionModel() const { return const_cast<QItemSelectionModel *>(&_selectionModel); }
  41     inline QModelIndex currentIndex() const { return _selectionModel.currentIndex(); }
  42     inline QItemSelection currentSelection() const { return _selectionModel.selection(); }
  43
  44 private slots:
  45     void syncedCurrentChanged(const QModelIndex &current, const QModelIndex &previous);
  46     void syncedSelectionChanged(const QItemSelection &selected, const QItemSelection &previous);
  47
  48     void setCurrentIndex(const QModelIndex &index);
  49     void setCurrentSelection(const QItemSelection &selection);
  50
  51     void currentChanged(const QModelIndex &current, const QModelIndex &previous);
  52     void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
  53
  54     void selectionModelDestroyed(QObject *object);
  55
  56 private:
  57     QAbstractItemModel *_model;
  58     QItemSelectionModel _selectionModel;
  59     bool _changeCurrentEnabled;
  60     bool _changeSelectionEnabled;
  61
  62     bool checkBaseModel(QItemSelectionModel *model);
  63     QModelIndex mapFromSource(const QModelIndex &sourceIndex, const QItemSelectionModel *selectionModel);
  64     QItemSelection mapSelectionFromSource(const QItemSelection &sourceSelection, const QItemSelectionModel *selectionModel);
  65     QModelIndex mapToSource(const QModelIndex &index, QItemSelectionModel *selectionModel);
  66     QItemSelection mapSelectionToSource(const QItemSelection &selection, QItemSelectionModel *selectionModel);
  67
  68     QSet<QItemSelectionModel *> _selectionModels;
  69 };
  70
  71
  72 #endif