diff --git a/src/xychart/qhxymodelmapper.cpp b/src/xychart/qhxymodelmapper.cpp
index e058dac..9a16ede 100644
--- a/src/xychart/qhxymodelmapper.cpp
+++ b/src/xychart/qhxymodelmapper.cpp
@@ -47,6 +47,18 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
+    \fn void QHXYModelMapper::xRowChanged()
+
+    Emitted when the xRow has changed.
+*/
+
+/*!
+    \fn void QHXYModelMapper::yRowChanged()
+
+    Emitted when the yRow has changed.
+*/
+
+/*!
     Constructs a mapper object which is a child of \a parent.
 */
 QHXYModelMapper::QHXYModelMapper(QObject *parent) :
@@ -62,7 +74,10 @@ int QHXYModelMapper::xRow() const
 
 void QHXYModelMapper::setXRow(int xRow)
 {
-    return QXYModelMapper::setXSection(xRow);
+    if (xRow != xSection()) {
+        return QXYModelMapper::setXSection(xRow);
+        emit xRowChanged();
+    }
 }
 
 int QHXYModelMapper::yRow() const
@@ -72,7 +87,10 @@ int QHXYModelMapper::yRow() const
 
 void QHXYModelMapper::setYRow(int yRow)
 {
-    return QXYModelMapper::setYSection(yRow);
+    if (yRow != ySection()) {
+        return QXYModelMapper::setYSection(yRow);
+        emit yRowChanged();
+    }
 }
 
 #include "moc_qhxymodelmapper.cpp"
diff --git a/src/xychart/qhxymodelmapper.h b/src/xychart/qhxymodelmapper.h
index b4c3177..e0bb02c 100644
--- a/src/xychart/qhxymodelmapper.h
+++ b/src/xychart/qhxymodelmapper.h
@@ -28,8 +28,8 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 class QTCOMMERCIALCHART_EXPORT QHXYModelMapper : public QXYModelMapper
 {
     Q_OBJECT
-    Q_PROPERTY(int xRow READ xRow WRITE setXRow)
-    Q_PROPERTY(int yRow READ yRow WRITE setYRow)
+    Q_PROPERTY(int xRow READ xRow WRITE setXRow NOTIFY xRowChanged)
+    Q_PROPERTY(int yRow READ yRow WRITE setYRow NOTIFY yRowChanged)
 
 public:
     explicit QHXYModelMapper(QObject *parent = 0);
@@ -38,7 +38,11 @@ public:
     void setXRow(int xRow);
 
     int yRow() const;
-    void setYRow(int yRow);    
+    void setYRow(int yRow);
+
+Q_SIGNALS:
+    void xRowChanged();
+    void yRowChanged();
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/xychart/qvxymodelmapper.cpp b/src/xychart/qvxymodelmapper.cpp
index 5eec5b1..d54f44e 100644
--- a/src/xychart/qvxymodelmapper.cpp
+++ b/src/xychart/qvxymodelmapper.cpp
@@ -48,6 +48,18 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
+    \fn void QVXYModelMapper::xColumnChanged()
+
+    Emitted when the xColumn has changed.
+*/
+
+/*!
+    \fn void QVXYModelMapper::yColumnChanged()
+
+    Emitted when the yColumn has changed.
+*/
+
+/*!
     Constructs a mapper object which is a child of \a parent.
 */
 QVXYModelMapper::QVXYModelMapper(QObject *parent) :
@@ -63,7 +75,10 @@ int QVXYModelMapper::xColumn() const
 
 void QVXYModelMapper::setXColumn(int xColumn)
 {
-    return QXYModelMapper::setXSection(xColumn);
+    if (xColumn != xSection()) {
+        return QXYModelMapper::setXSection(xColumn);
+        emit xColumnChanged();
+    }
 }
 
 int QVXYModelMapper::yColumn() const
@@ -73,7 +88,10 @@ int QVXYModelMapper::yColumn() const
 
 void QVXYModelMapper::setYColumn(int yColumn)
 {
-    return QXYModelMapper::setYSection(yColumn);
+    if (yColumn != ySection()) {
+        return QXYModelMapper::setYSection(yColumn);
+        emit yColumnChanged();
+    }
 }
 
 #include "moc_qvxymodelmapper.cpp"
diff --git a/src/xychart/qvxymodelmapper.h b/src/xychart/qvxymodelmapper.h
index 4645a75..b30f46a 100644
--- a/src/xychart/qvxymodelmapper.h
+++ b/src/xychart/qvxymodelmapper.h
@@ -28,8 +28,8 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 class QTCOMMERCIALCHART_EXPORT QVXYModelMapper : public QXYModelMapper
 {
     Q_OBJECT
-    Q_PROPERTY(int xColumn READ xColumn WRITE setXColumn)
-    Q_PROPERTY(int yColumn READ yColumn WRITE setYColumn)
+    Q_PROPERTY(int xColumn READ xColumn WRITE setXColumn NOTIFY xColumnChanged)
+    Q_PROPERTY(int yColumn READ yColumn WRITE setYColumn NOTIFY yColumnChanged)
 
 public:
     explicit QVXYModelMapper(QObject *parent = 0);
@@ -39,6 +39,10 @@ public:
 
     int yColumn() const;
     void setYColumn(int yColumn);    
+
+Q_SIGNALS:
+    void xColumnChanged();
+    void yColumnChanged();
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/xychart/qxymodelmapper.cpp b/src/xychart/qxymodelmapper.cpp
index eb44c11..77549e8 100644
--- a/src/xychart/qxymodelmapper.cpp
+++ b/src/xychart/qxymodelmapper.cpp
@@ -64,6 +64,30 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 */
 
 /*!
+    \fn void QXYModelMapper::seriesReplaced()
+
+    Emitted when the series to which mapper is connected to has changed.
+*/
+
+/*!
+    \fn void QXYModelMapper::modelReplaced()
+
+    Emitted when the model to which mapper is connected to has changed.
+*/
+
+/*!
+    \fn void QXYModelMapper::firstChanged()
+
+    Emitted when the value for the first has changed.
+*/
+
+/*!
+    \fn void QXYModelMapper::countChanged()
+
+    Emitted when the value for the count has changed.
+*/
+
+/*!
     Constructs a mapper object which is a child of \a parent.
 */
 QXYModelMapper::QXYModelMapper(QObject *parent):
@@ -96,6 +120,8 @@ void QXYModelMapper::setModel(QAbstractItemModel *model)
     connect(d->m_model, SIGNAL(rowsRemoved(QModelIndex,int,int)), d, SLOT(modelRowsRemoved(QModelIndex,int,int)));
     connect(d->m_model, SIGNAL(columnsInserted(QModelIndex,int,int)), d, SLOT(modelColumnsAdded(QModelIndex,int,int)));
     connect(d->m_model, SIGNAL(columnsRemoved(QModelIndex,int,int)), d, SLOT(modelColumnsRemoved(QModelIndex,int,int)));
+
+    emit modelReplaced();
 }
 
 QXYSeries* QXYModelMapper::series() const
@@ -120,6 +146,8 @@ void QXYModelMapper::setSeries(QXYSeries *series)
     connect(d->m_series, SIGNAL(pointAdded(int)), d, SLOT(handlePointAdded(int)));
     connect(d->m_series, SIGNAL(pointRemoved(int)), d, SLOT(handlePointRemoved(int)));
     connect(d->m_series, SIGNAL(pointReplaced(int)), d, SLOT(handlePointReplaced(int)));
+
+    emit seriesReplaced();
 }
 
 int QXYModelMapper::first() const
@@ -131,8 +159,12 @@ int QXYModelMapper::first() const
 void QXYModelMapper::setFirst(int first)
 {
     Q_D(QXYModelMapper);
-    d->m_first = qMax(first, 0);
-    d->initializeXYFromModel();
+    if (first != d->m_first) {
+        d->m_first = qMax(first, 0);
+        d->initializeXYFromModel();
+
+        emit firstChanged();
+    }
 }
 
 int QXYModelMapper::count() const
@@ -144,8 +176,12 @@ int QXYModelMapper::count() const
 void QXYModelMapper::setCount(int count)
 {
     Q_D(QXYModelMapper);
-    d->m_count = qMax(count, -1);
-    d->initializeXYFromModel();
+    if (count != d->m_count) {
+        d->m_count = qMax(count, -1);
+        d->initializeXYFromModel();
+
+        emit countChanged();
+    }
 }
 
 /*!
diff --git a/src/xychart/qxymodelmapper.h b/src/xychart/qxymodelmapper.h
index d1ce381..a01ac80 100644
--- a/src/xychart/qxymodelmapper.h
+++ b/src/xychart/qxymodelmapper.h
@@ -34,10 +34,10 @@ class QXYSeries;
 class QTCOMMERCIALCHART_EXPORT QXYModelMapper : public QObject
 {
     Q_OBJECT
-    Q_PROPERTY(QXYSeries *series READ series WRITE setSeries)
-    Q_PROPERTY(QAbstractItemModel *model READ model WRITE setModel)
-    Q_PROPERTY(int first READ first WRITE setFirst)
-    Q_PROPERTY(int count READ count WRITE setCount)
+    Q_PROPERTY(QXYSeries *series READ series WRITE setSeries NOTIFY seriesReplaced)
+    Q_PROPERTY(QAbstractItemModel *model READ model WRITE setModel NOTIFY modelReplaced)
+    Q_PROPERTY(int first READ first WRITE setFirst NOTIFY firstChanged)
+    Q_PROPERTY(int count READ count WRITE setCount NOTIFY countChanged)
     Q_ENUMS(Qt::Orientation)
 
 protected:
@@ -68,6 +68,12 @@ protected:
     int ySection() const;
     void setYSection(int ySection);
 
+Q_SIGNALS:
+    void seriesReplaced();
+    void modelReplaced();
+    void firstChanged();
+    void countChanged();
+
 protected:
     QXYModelMapperPrivate * const d_ptr;
     Q_DECLARE_PRIVATE(QXYModelMapper)