Added ModelPropertyMapper which allows to keep track of /current/ changes in the...

[quassel.git] / src / client / modelpropertymapper.h

diff --git a/src/client/modelpropertymapper.h b/src/client/modelpropertymapper.h
new file mode 100644 (file)
index 0000000..988efa8
--- /dev/null
+++ b/src/client/modelpropertymapper.h
@@ -0,0 +1,73 @@
+/***************************************************************************
+ *   Copyright (C) 2005-07 by The Quassel Team                             *
+ *   devel@quassel-irc.org                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#ifndef _MODELPROPERTYMAPPER_H_
+#define _MODELPROPERTYMAPPER_H_
+
+#include <QPointer>
+#include <QModelIndex>
+#include <QObject>
+
+class QAbstractItemModel;
+class QItemSelectionModel;
+
+
+class ModelPropertyMapper : public QObject {
+  Q_OBJECT
+
+public:
+  ModelPropertyMapper(QObject *parent = 0);
+  virtual ~ModelPropertyMapper();
+
+  void setModel(QAbstractItemModel *model);
+  QAbstractItemModel *model() const;
+
+  void setSelectionModel(QItemSelectionModel *selectionModel);
+  QItemSelectionModel *selectionModel() const;
+
+  void addMapping(int column, int role, QObject *target, const QByteArray &property);
+  void removeMapping(int column, int role, QObject *target, const QByteArray &property);
+                                                                                     
+public slots:
+  void setCurrentRow(const QModelIndex &current, const QModelIndex &previous);
+
+private slots:
+  void targetDestroyed();
+  
+private:
+  struct Mapping {
+    int column;
+    int role;
+    QPointer<QObject> target;
+    QByteArray property;
+
+    Mapping(int _column, int _role, QObject *_target, const QByteArray &_property)
+      : column(_column), role(_role), target(_target), property(_property) {};
+    inline bool operator==(const Mapping &other) {
+      return (column == other.column && role == other.role && target == other.target && property == other.property); }
+  };
+    
+  QPointer<QAbstractItemModel> _model;
+  QPointer<QItemSelectionModel> _selectionModel;
+  QList<Mapping> _mappings;
+  
+};
+
+#endif