diff --git a/src/barchart/qbarseries.cpp b/src/barchart/qbarseries.cpp
index cf42bdf..a168881 100644
--- a/src/barchart/qbarseries.cpp
+++ b/src/barchart/qbarseries.cpp
@@ -124,7 +124,13 @@ qreal QBarSeries::barMargin() const
 bool QBarSeries::append(QBarSet *set)
 {
     Q_D(QBarSeries);
-    return d->append(set);
+    bool success = d->append(set);
+    if (success) {
+        QList<QBarSet*> sets;
+        sets.append(set);
+        emit barsetsAdded(sets);
+    }
+    return success;
 }
 
 /*!
@@ -134,7 +140,13 @@ bool QBarSeries::append(QBarSet *set)
 bool QBarSeries::remove(QBarSet *set)
 {
     Q_D(QBarSeries);
-    return d->remove(set);
+    bool success = d->remove(set);
+    if (success) {
+        QList<QBarSet*> sets;
+        sets.append(set);
+        emit barsetsRemoved(sets);
+    }
+    return success;
 }
 
 /*!
@@ -146,7 +158,11 @@ bool QBarSeries::remove(QBarSet *set)
 bool QBarSeries::append(QList<QBarSet* > sets)
 {
     Q_D(QBarSeries);
-    return d->append(sets);
+    bool success = d->append(sets);
+    if (success) {
+        emit barsetsAdded(sets);
+    }
+    return success;
 }
 
 /*!
@@ -155,7 +171,11 @@ bool QBarSeries::append(QList<QBarSet* > sets)
 bool QBarSeries::remove(QList<QBarSet* > sets)
 {
     Q_D(QBarSeries);
-    return d->remove(sets);
+    bool success = d->remove(sets);
+    if (success) {
+        emit barsetsRemoved(sets);
+    }
+    return success;
 }
 
 void QBarSeries::clear()
@@ -189,8 +209,8 @@ void QBarSeries::setLabelsVisible(bool visible)
 {
     Q_D(QBarSeries);
     if (d->m_labelsVisible != visible) {
-        d->m_labelsVisible = visible;
-        emit d->labelsVisibleChanged(visible);
+        d->setLabelsVisible(visible);
+        emit labelsVisibleChanged();
     }
 }
 
@@ -287,15 +307,14 @@ QBarSet* QBarSeriesPrivate::barsetAt(int index)
 
 void QBarSeriesPrivate::setVisible(bool visible)
 {
-    if (m_visible != visible) {
-        m_visible = visible;
-        emit updatedBars();
-    }
+    m_visible = visible;
+    emit updatedBars();
 }
 
-bool QBarSeriesPrivate::isVisible() const
+void QBarSeriesPrivate::setLabelsVisible(bool visible)
 {
-    return m_visible;
+    m_labelsVisible = visible;
+    emit labelsVisibleChanged(visible);
 }
 
 QString QBarSeriesPrivate::categoryName(int category)
@@ -518,23 +537,28 @@ bool QBarSeriesPrivate::append(QList<QBarSet* > sets)
 bool QBarSeriesPrivate::remove(QList<QBarSet* > sets)
 {
     Q_Q(QBarSeries);
-    bool setsRemoved = false;
     foreach (QBarSet* set, sets) {
-        if (m_barSets.contains(set)) {
-            m_barSets.removeOne(set);
-            QObject::disconnect(set->d_ptr.data(), SIGNAL(updatedBars()), this, SIGNAL(updatedBars()));
-            QObject::disconnect(set->d_ptr.data(), SIGNAL(restructuredBars()), this, SIGNAL(restructuredBars()));
-            setsRemoved = true;
+        if ((set == 0) || (!m_barSets.contains(set))) {
+            // Fail if any of the sets is null or is not in series
+            return false;
+        }
+        if (sets.count(set) != 1) {
+            // Also fail if same set is more than once in given list.
+            return false;
         }
     }
 
-    if (setsRemoved) {
-        if (m_dataset) {
-            m_dataset->updateSeries(q);   // this notifies legend
-        }
-        emit restructuredBars();        // this notifies barchartitem
+    foreach (QBarSet* set, sets) {
+        m_barSets.removeOne(set);
+        QObject::disconnect(set->d_ptr.data(), SIGNAL(updatedBars()), this, SIGNAL(updatedBars()));
+        QObject::disconnect(set->d_ptr.data(), SIGNAL(restructuredBars()), this, SIGNAL(restructuredBars()));
     }
-    return setsRemoved;
+
+    if (m_dataset) {
+        m_dataset->updateSeries(q);   // this notifies legend
+    }
+    emit restructuredBars();        // this notifies barchartitem
+    return true;
 }
 
 #include "moc_qbarseries.cpp"
diff --git a/src/barchart/qbarseries.h b/src/barchart/qbarseries.h
index afad19e..091d66a 100644
--- a/src/barchart/qbarseries.h
+++ b/src/barchart/qbarseries.h
@@ -63,6 +63,11 @@ protected:
 Q_SIGNALS:
     void clicked(QBarSet *barset, int index);
     void hovered(QBarSet* barset, bool status);
+    void visibleChanged();
+    void labelsVisibleChanged();
+
+    void barsetsAdded(QList<QBarSet*> sets);
+    void barsetsRemoved(QList<QBarSet*> sets);
 
 protected:
     Q_DECLARE_PRIVATE(QBarSeries)
diff --git a/src/barchart/qbarseries_p.h b/src/barchart/qbarseries_p.h
index d562018..a9926a4 100644
--- a/src/barchart/qbarseries_p.h
+++ b/src/barchart/qbarseries_p.h
@@ -55,7 +55,7 @@ public:
     qreal barMargin() const;
 
     void setVisible(bool visible);
-    bool isVisible() const;
+    void setLabelsVisible(bool visible);
 
     void scaleDomain(Domain& domain);
     Chart* createGraphics(ChartPresenter* presenter);
diff --git a/src/barchart/qbarset.cpp b/src/barchart/qbarset.cpp
index 119d8c4..ee2fa53 100644
--- a/src/barchart/qbarset.cpp
+++ b/src/barchart/qbarset.cpp
@@ -60,6 +60,7 @@ QBarSet::~QBarSet()
 void QBarSet::setName(const QString name)
 {
     d_ptr->m_name = name;
+    emit nameChanged();
 }
 
 /*!
@@ -78,8 +79,9 @@ QString QBarSet::name() const
 */
 void QBarSet::append(const QPointF value)
 {
-    d_ptr->m_values.append(value);
-    emit d_ptr->restructuredBars();
+    int index = d_ptr->m_values.count();
+    d_ptr->append(value);
+    emit valuesAdded(index, 1);
 }
 
 /*!
@@ -88,10 +90,9 @@ void QBarSet::append(const QPointF value)
 */
 void QBarSet::append(const QList<QPointF> values)
 {
-    for (int i=0; i<values.count(); i++) {
-        d_ptr->m_values.append(values.at(i));
-    }
-    emit d_ptr->restructuredBars();
+    int index = d_ptr->m_values.count();
+    d_ptr->append(values);
+    emit valuesAdded(index, values.count());
 }
 
 /*!
@@ -100,6 +101,7 @@ void QBarSet::append(const QList<QPointF> values)
 */
 void QBarSet::append(const qreal value)
 {
+    // Convert to QPointF and use other append(QPointF) method.
     append(QPointF(d_ptr->m_values.count(), value));
 }
 
@@ -111,11 +113,8 @@ void QBarSet::append(const qreal value)
 void QBarSet::append(const QList<qreal> values)
 {
     int index = d_ptr->m_values.count();
-    for (int i=0; i<values.count(); i++) {
-        d_ptr->m_values.append(QPointF(index,values.at(i)));
-        index++;
-    }
-    emit d_ptr->restructuredBars();
+    d_ptr->append(values);
+    emit valuesAdded(index, values.count());
 }
 
 /*!
@@ -145,18 +144,32 @@ QBarSet& QBarSet::operator << (const QPointF &value)
 */
 void QBarSet::insert(const int index, const qreal value)
 {
-    d_ptr->m_values.insert(index, QPointF(index, value));
-//    emit d_ptr->updatedBars();
+    d_ptr->insert(index, value);
+    emit valuesAdded(index,1);
+}
+
+/*!
+    Inserts new \a value on the \a index position.
+    The value that is currently at this postion is moved to postion index + 1
+    \sa remove()
+*/
+void QBarSet::insert(const int index, const QPointF value)
+{
+    d_ptr->insert(index,value);
+    emit valuesAdded(index,1);
 }
 
 /*!
     Removes the value specified by \a index
     \sa insert()
 */
-void QBarSet::remove(const int index)
+bool QBarSet::remove(const int index, const int count)
 {
-    d_ptr->m_values.removeAt(index);
-//    emit d_ptr->updatedBars();
+    bool success = d_ptr->remove(index,count);
+    if (success) {
+        emit valuesRemoved(index,count);
+    }
+    return success;
 }
 
 /*!
@@ -164,8 +177,17 @@ void QBarSet::remove(const int index)
 */
 void QBarSet::replace(const int index, const qreal value)
 {
-    d_ptr->m_values.replace(index,QPointF(index,value));
-    emit d_ptr->updatedBars();
+    d_ptr->replace(index,value);
+    emit valueChanged(index);
+}
+
+/*!
+    Sets a new value \a value to set, indexed by \a index
+*/
+void QBarSet::replace(const int index, const QPointF value)
+{
+    d_ptr->replace(index,value);
+    emit valueChanged(index);
 }
 
 /*!
@@ -222,6 +244,7 @@ void QBarSet::setPen(const QPen &pen)
       if(d_ptr->m_pen!=pen){
           d_ptr->m_pen = pen;
           emit d_ptr->updatedBars();
+          emit penChanged();
       }
 }
 
@@ -241,6 +264,7 @@ void QBarSet::setBrush(const QBrush &brush)
     if(d_ptr->m_brush!=brush){
       d_ptr->m_brush = brush;
       emit d_ptr->updatedBars();
+      emit brushChanged();
     }
 }
 
@@ -260,6 +284,7 @@ void QBarSet::setLabelBrush(const QBrush &brush)
     if(d_ptr->m_labelBrush!=brush){
         d_ptr->m_labelBrush = brush;
         emit d_ptr->updatedBars();
+        emit labelBrushChanged();
     }
 }
 
@@ -279,6 +304,7 @@ void QBarSet::setLabelFont(const QFont &font)
     if(d_ptr->m_labelFont!=font) {
         d_ptr->m_labelFont = font;
         emit d_ptr->updatedBars();
+        emit labelFontChanged();
     }
 
 }
@@ -303,6 +329,69 @@ QBarSetPrivate::~QBarSetPrivate()
 {
 }
 
+void QBarSetPrivate::append(QPointF value)
+{
+    m_values.append(value);
+    emit restructuredBars();
+}
+
+void QBarSetPrivate::append(QList<QPointF> values)
+{
+    for (int i=0; i<values.count(); i++) {
+        m_values.append(values.at(i));
+    }
+    emit restructuredBars();
+}
+
+void QBarSetPrivate::append(QList<qreal> values)
+{
+    int index = m_values.count();
+    for (int i=0; i<values.count(); i++) {
+        m_values.append(QPointF(index,values.at(i)));
+        index++;
+    }
+    emit restructuredBars();
+}
+
+void QBarSetPrivate::insert(const int index, const qreal value)
+{
+    m_values.insert(index, QPointF(index, value));
+    emit restructuredBars();
+}
+
+void QBarSetPrivate::insert(const int index, const QPointF value)
+{
+    m_values.insert(index, value);
+    emit restructuredBars();
+}
+
+bool QBarSetPrivate::remove(const int index, const int count)
+{
+    if ((index + count) > m_values.count()) {
+        // cant remove more values than there are
+        return false;
+    }
+    int c = count;
+    while (c > 0) {
+        m_values.removeAt(index);
+        c--;
+    }
+    emit restructuredBars();
+    return true;
+}
+
+void QBarSetPrivate::replace(const int index, const qreal value)
+{
+    m_values.replace(index,QPointF(index,value));
+    emit updatedBars();
+}
+
+void QBarSetPrivate::replace(const int index, const QPointF value)
+{
+    m_values.replace(index,value);
+    emit updatedBars();
+}
+
 #include "moc_qbarset.cpp"
 #include "moc_qbarset_p.cpp"
 
diff --git a/src/barchart/qbarset.h b/src/barchart/qbarset.h
index 8fad337..6591fae 100644
--- a/src/barchart/qbarset.h
+++ b/src/barchart/qbarset.h
@@ -54,8 +54,10 @@ public:
     QBarSet& operator << (const QPointF &value);
 
     void insert(const int index, const qreal value);
-    void remove(const int index);
+    void insert(const int index, const QPointF value);
+    bool remove(const int index, const int count = 1);
     void replace(const int index, const qreal value);
+    void replace(const int index, const QPointF value);
     QPointF at(const int index) const;
     QPointF operator [] (const int index) const;
     int count() const;
@@ -73,6 +75,18 @@ public:
     void setLabelFont(const QFont &font);
     QFont labelFont() const;
 
+Q_SIGNALS:
+    void nameChanged();
+    void penChanged();
+    void brushChanged();
+    void labelChanged();
+    void labelBrushChanged();
+    void labelFontChanged();
+
+    void valuesAdded(int index, int count);
+    void valuesRemoved(int index, int count);
+    void valueChanged(int index);
+
 private:
     QScopedPointer<QBarSetPrivate> d_ptr;
     Q_DISABLE_COPY(QBarSet)
diff --git a/src/barchart/qbarset_p.h b/src/barchart/qbarset_p.h
index 4fa3aa0..49a128e 100644
--- a/src/barchart/qbarset_p.h
+++ b/src/barchart/qbarset_p.h
@@ -46,6 +46,17 @@ public:
     QBarSetPrivate(const QString name, QBarSet *parent);
     ~QBarSetPrivate();
 
+    void append(QPointF value);
+    void append(QList<QPointF> values);
+    void append(QList<qreal> values);
+
+    void insert(const int index, const qreal value);
+    void insert(const int index, const QPointF value);
+    bool remove(const int index, const int count);
+
+    void replace(const int index, const qreal value);
+    void replace(const int index, const QPointF value);
+
 Q_SIGNALS:
     void restructuredBars();
     void updatedBars();
diff --git a/tests/auto/qbarset/tst_qbarset.cpp b/tests/auto/qbarset/tst_qbarset.cpp
index 46b2ae5..c146185 100644
--- a/tests/auto/qbarset/tst_qbarset.cpp
+++ b/tests/auto/qbarset/tst_qbarset.cpp
@@ -108,8 +108,10 @@ void tst_QBarSet::name()
     QFETCH(QString, name);
     QFETCH(QString, result);
 
+    QSignalSpy nameSpy(m_barset,SIGNAL(nameChanged()));
     m_barset->setName(name);
     QCOMPARE(m_barset->name(), result);
+    QVERIFY(nameSpy.count() == 1);
 }
 
 void tst_QBarSet::append_data()
@@ -128,6 +130,8 @@ void tst_QBarSet::append()
     QCOMPARE(m_barset->count(), 0);
     QVERIFY(qFuzzyIsNull(m_barset->sum()));
 
+    QSignalSpy valueSpy(m_barset,SIGNAL(valuesAdded(int,int)));
+
     qreal sum(0.0);
     qreal value(0.0);
 
@@ -140,6 +144,8 @@ void tst_QBarSet::append()
 
     QCOMPARE(m_barset->count(), count);
     QVERIFY(qFuzzyCompare(m_barset->sum(), sum));
+
+    QVERIFY(valueSpy.count() == count);
 }
 
 void tst_QBarSet::appendOperator_data()
@@ -154,6 +160,8 @@ void tst_QBarSet::appendOperator()
     QCOMPARE(m_barset->count(), 0);
     QVERIFY(qFuzzyIsNull(m_barset->sum()));
 
+    QSignalSpy valueSpy(m_barset,SIGNAL(valuesAdded(int,int)));
+
     qreal sum(0.0);
     qreal value(0.0);
 
@@ -166,6 +174,8 @@ void tst_QBarSet::appendOperator()
 
     QCOMPARE(m_barset->count(), count);
     QVERIFY(qFuzzyCompare(m_barset->sum(), sum));
+    QVERIFY(valueSpy.count() == count);
+
 }
 
 void tst_QBarSet::insert_data()
@@ -176,6 +186,7 @@ void tst_QBarSet::insert()
 {
     QCOMPARE(m_barset->count(), 0);
     QVERIFY(qFuzzyIsNull(m_barset->sum()));
+    QSignalSpy valueSpy(m_barset,SIGNAL(valuesAdded(int,int)));
 
     m_barset->insert(0, 1.0);       // 1.0
     QCOMPARE(m_barset->at(0).y(), 1.0);
@@ -194,6 +205,7 @@ void tst_QBarSet::insert()
     QCOMPARE(m_barset->at(2).y(), 1.0);
     QCOMPARE(m_barset->count(), 3);
     QVERIFY(qFuzzyCompare(m_barset->sum(), 6.0));
+    QVERIFY(valueSpy.count() == 3);
 }
 
 void tst_QBarSet::remove_data()
@@ -205,6 +217,8 @@ void tst_QBarSet::remove()
     QCOMPARE(m_barset->count(), 0);
     QVERIFY(qFuzzyIsNull(m_barset->sum()));
 
+    QSignalSpy valueSpy(m_barset,SIGNAL(valuesRemoved(int,int)));
+
     m_barset->append(1.0);
     m_barset->append(2.0);
     m_barset->append(3.0);
@@ -225,6 +239,8 @@ void tst_QBarSet::remove()
     QCOMPARE(m_barset->at(1).y(), 4.0);
     QCOMPARE(m_barset->count(), 2);
     QCOMPARE(m_barset->sum(), 6.0);
+
+    QVERIFY(valueSpy.count() == 2);
 }
 
 void tst_QBarSet::replace_data()
@@ -236,6 +252,7 @@ void tst_QBarSet::replace()
 {
     QCOMPARE(m_barset->count(), 0);
     QVERIFY(qFuzzyIsNull(m_barset->sum()));
+    QSignalSpy valueSpy(m_barset,SIGNAL(valueChanged(int)));
 
     m_barset->append(1.0);
     m_barset->append(2.0);
@@ -257,6 +274,8 @@ void tst_QBarSet::replace()
     QCOMPARE(m_barset->at(1).y(), 2.0);
     QCOMPARE(m_barset->at(2).y(), 3.0);
     QCOMPARE(m_barset->at(3).y(), 6.0);
+
+    QVERIFY(valueSpy.count() == 2);
 }
 
 void tst_QBarSet::at_data()