diff --git a/example/barchart/main.cpp b/example/barchart/main.cpp
index fe2556f..8e9474d 100644
--- a/example/barchart/main.cpp
+++ b/example/barchart/main.cpp
@@ -14,67 +14,22 @@ int main(int argc, char *argv[])
     BarChartSeries* series0 = new BarChartSeries();
 
     // Create some test data to chart
-    QStandardItemModel dataModel(5,10);
-    QModelIndex index;
-    index = dataModel.index(0,0);
-
-    // Series 0
-    dataModel.setData(dataModel.index(0,0),1);
-    dataModel.setData(dataModel.index(0,1),2);
-    dataModel.setData(dataModel.index(0,2),3);
-    dataModel.setData(dataModel.index(0,3),4);
-    dataModel.setData(dataModel.index(0,4),5);
-    dataModel.setData(dataModel.index(0,5),6);
-    dataModel.setData(dataModel.index(0,6),7);
-    dataModel.setData(dataModel.index(0,7),8);
-    dataModel.setData(dataModel.index(0,8),9);
-    dataModel.setData(dataModel.index(0,9),10);
-
-    // Series 1, some other items missing
-    dataModel.setData(dataModel.index(1,0),5);
-    dataModel.setData(dataModel.index(1,3),4);
-    dataModel.setData(dataModel.index(1,5),7);
-    dataModel.setData(dataModel.index(1,6),8);
-    dataModel.setData(dataModel.index(1,8),9);
-    dataModel.setData(dataModel.index(1,9),9);
-
-    // Series 2
-    dataModel.setData(dataModel.index(2,0),3);
-    dataModel.setData(dataModel.index(2,1),5);
-    dataModel.setData(dataModel.index(2,2),8);
-    dataModel.setData(dataModel.index(2,3),13);
-    dataModel.setData(dataModel.index(2,4),8);
-    dataModel.setData(dataModel.index(2,5),5);
-    dataModel.setData(dataModel.index(2,6),3);
-    dataModel.setData(dataModel.index(2,7),2);
-    dataModel.setData(dataModel.index(2,8),1);
-    dataModel.setData(dataModel.index(2,9),1);
-
-    // Series 3
-    dataModel.setData(dataModel.index(3,0),5);
-    dataModel.setData(dataModel.index(3,1),6);
-    dataModel.setData(dataModel.index(3,2),7);
-    dataModel.setData(dataModel.index(3,3),3);
-    dataModel.setData(dataModel.index(3,4),4);
-    dataModel.setData(dataModel.index(3,5),5);
-    dataModel.setData(dataModel.index(3,6),8);
-    dataModel.setData(dataModel.index(3,7),9);
-    dataModel.setData(dataModel.index(3,8),10);
-    dataModel.setData(dataModel.index(3,9),5);
-
-    // Series 4
-    dataModel.setData(dataModel.index(4,0),9);
-    dataModel.setData(dataModel.index(4,1),7);
-    dataModel.setData(dataModel.index(4,2),5);
-    dataModel.setData(dataModel.index(4,3),3);
-    dataModel.setData(dataModel.index(4,4),1);
-    dataModel.setData(dataModel.index(4,5),2);
-    dataModel.setData(dataModel.index(4,6),4);
-    dataModel.setData(dataModel.index(4,7),6);
-    dataModel.setData(dataModel.index(4,8),8);
-    dataModel.setData(dataModel.index(4,9),10);
-
-    series0->setData(&dataModel);
+    QList<qreal> data0;
+    data0 << 1 << 2 << 3 << 4 << 5 << 6 << 7 << 8 << 9 << 10;
+    QList<qreal> data1;
+    data1 << 5 << 0 << 0 << 4 << 0 << 7 << 8 << 9 << 9 << 0;
+    QList<qreal> data2;
+    data2 << 3 << 5 << 8 << 13 << 8 << 5 << 3 << 2 << 1 << 1;
+    QList<qreal> data3;
+    data3 << 5 << 6 << 7 << 3 << 4 << 5 << 8 << 9 << 10 << 5;
+    QList<qreal> data4;
+    data4 << 9 << 7 << 5 << 3 << 1 << 2 << 4 << 6 << 8 << 10;
+
+    series0->addData(data0);
+    series0->addData(data1);
+    series0->addData(data2);
+    series0->addData(data3);
+    series0->addData(data4);
 
     ChartWidget* chartWidget =  new ChartWidget(&window);
     chartWidget->addSeries(series0);
diff --git a/example/percentbarchart/main.cpp b/example/percentbarchart/main.cpp
index 056eb91..7c791ff 100644
--- a/example/percentbarchart/main.cpp
+++ b/example/percentbarchart/main.cpp
@@ -14,67 +14,22 @@ int main(int argc, char *argv[])
     PercentBarChartSeries* series0 = new PercentBarChartSeries();
 
     // Create some test data to chart
-    QStandardItemModel dataModel(5,10);
-    QModelIndex index;
-    index = dataModel.index(0,0);
-
-    // Series 0
-    dataModel.setData(dataModel.index(0,0),1);
-    dataModel.setData(dataModel.index(0,1),2);
-    dataModel.setData(dataModel.index(0,2),3);
-    dataModel.setData(dataModel.index(0,3),4);
-    dataModel.setData(dataModel.index(0,4),5);
-    dataModel.setData(dataModel.index(0,5),6);
-    dataModel.setData(dataModel.index(0,6),7);
-    dataModel.setData(dataModel.index(0,7),8);
-    dataModel.setData(dataModel.index(0,8),9);
-    dataModel.setData(dataModel.index(0,9),10);
-
-    // Series 1, some other items missing
-    dataModel.setData(dataModel.index(1,0),5);
-    dataModel.setData(dataModel.index(1,3),4);
-    dataModel.setData(dataModel.index(1,5),7);
-    dataModel.setData(dataModel.index(1,6),8);
-    dataModel.setData(dataModel.index(1,8),9);
-    dataModel.setData(dataModel.index(1,9),9);
-
-    // Series 2
-    dataModel.setData(dataModel.index(2,0),3);
-    dataModel.setData(dataModel.index(2,1),5);
-    dataModel.setData(dataModel.index(2,2),8);
-    dataModel.setData(dataModel.index(2,3),13);
-    dataModel.setData(dataModel.index(2,4),8);
-    dataModel.setData(dataModel.index(2,5),5);
-    dataModel.setData(dataModel.index(2,6),3);
-    dataModel.setData(dataModel.index(2,7),2);
-    dataModel.setData(dataModel.index(2,8),1);
-    dataModel.setData(dataModel.index(2,9),1);
-
-    // Series 3
-    dataModel.setData(dataModel.index(3,0),5);
-    dataModel.setData(dataModel.index(3,1),6);
-    dataModel.setData(dataModel.index(3,2),7);
-    dataModel.setData(dataModel.index(3,3),3);
-    dataModel.setData(dataModel.index(3,4),4);
-    dataModel.setData(dataModel.index(3,5),5);
-    dataModel.setData(dataModel.index(3,6),8);
-    dataModel.setData(dataModel.index(3,7),9);
-    dataModel.setData(dataModel.index(3,8),10);
-    dataModel.setData(dataModel.index(3,9),5);
-
-    // Series 4
-    dataModel.setData(dataModel.index(4,0),9);
-    dataModel.setData(dataModel.index(4,1),7);
-    dataModel.setData(dataModel.index(4,2),5);
-    dataModel.setData(dataModel.index(4,3),3);
-    dataModel.setData(dataModel.index(4,4),1);
-    dataModel.setData(dataModel.index(4,5),2);
-    dataModel.setData(dataModel.index(4,6),4);
-    dataModel.setData(dataModel.index(4,7),6);
-    dataModel.setData(dataModel.index(4,8),8);
-    dataModel.setData(dataModel.index(4,9),10);
-
-    series0->setData(&dataModel);
+    QList<qreal> data0;
+    data0 << 1 << 2 << 3 << 4 << 5 << 6 << 7 << 8 << 9 << 10;
+    QList<qreal> data1;
+    data1 << 5 << 0 << 0 << 4 << 0 << 7 << 8 << 9 << 9 << 0;
+    QList<qreal> data2;
+    data2 << 3 << 5 << 8 << 13 << 8 << 5 << 3 << 2 << 1 << 1;
+    QList<qreal> data3;
+    data3 << 5 << 6 << 7 << 3 << 4 << 5 << 8 << 9 << 10 << 5;
+    QList<qreal> data4;
+    data4 << 9 << 7 << 5 << 3 << 1 << 2 << 4 << 6 << 8 << 10;
+
+    series0->addData(data0);
+    series0->addData(data1);
+    series0->addData(data2);
+    series0->addData(data3);
+    series0->addData(data4);
 
     ChartWidget* chartWidget =  new ChartWidget(&window);
     chartWidget->addSeries(series0);
diff --git a/example/stackedbarchart/main.cpp b/example/stackedbarchart/main.cpp
index 6f16dbd..66f99ab 100644
--- a/example/stackedbarchart/main.cpp
+++ b/example/stackedbarchart/main.cpp
@@ -14,67 +14,22 @@ int main(int argc, char *argv[])
     StackedBarChartSeries* series0 = new StackedBarChartSeries();
 
     // Create some test data to chart
-    QStandardItemModel dataModel(5,10);
-    QModelIndex index;
-    index = dataModel.index(0,0);
-
-    // Series 0
-    dataModel.setData(dataModel.index(0,0),1);
-    dataModel.setData(dataModel.index(0,1),2);
-    dataModel.setData(dataModel.index(0,2),3);
-    dataModel.setData(dataModel.index(0,3),4);
-    dataModel.setData(dataModel.index(0,4),5);
-    dataModel.setData(dataModel.index(0,5),6);
-    dataModel.setData(dataModel.index(0,6),7);
-    dataModel.setData(dataModel.index(0,7),8);
-    dataModel.setData(dataModel.index(0,8),9);
-    dataModel.setData(dataModel.index(0,9),10);
-
-    // Series 1, some other items missing
-    dataModel.setData(dataModel.index(1,0),5);
-    dataModel.setData(dataModel.index(1,3),4);
-    dataModel.setData(dataModel.index(1,5),7);
-    dataModel.setData(dataModel.index(1,6),8);
-    dataModel.setData(dataModel.index(1,8),9);
-    dataModel.setData(dataModel.index(1,9),9);
-
-    // Series 2
-    dataModel.setData(dataModel.index(2,0),3);
-    dataModel.setData(dataModel.index(2,1),5);
-    dataModel.setData(dataModel.index(2,2),8);
-    dataModel.setData(dataModel.index(2,3),13);
-    dataModel.setData(dataModel.index(2,4),8);
-    dataModel.setData(dataModel.index(2,5),5);
-    dataModel.setData(dataModel.index(2,6),3);
-    dataModel.setData(dataModel.index(2,7),2);
-    dataModel.setData(dataModel.index(2,8),1);
-    dataModel.setData(dataModel.index(2,9),1);
-
-    // Series 3
-    dataModel.setData(dataModel.index(3,0),5);
-    dataModel.setData(dataModel.index(3,1),6);
-    dataModel.setData(dataModel.index(3,2),7);
-    dataModel.setData(dataModel.index(3,3),3);
-    dataModel.setData(dataModel.index(3,4),4);
-    dataModel.setData(dataModel.index(3,5),5);
-    dataModel.setData(dataModel.index(3,6),8);
-    dataModel.setData(dataModel.index(3,7),9);
-    dataModel.setData(dataModel.index(3,8),10);
-    dataModel.setData(dataModel.index(3,9),5);
-
-    // Series 4
-    dataModel.setData(dataModel.index(4,0),9);
-    dataModel.setData(dataModel.index(4,1),7);
-    dataModel.setData(dataModel.index(4,2),5);
-    dataModel.setData(dataModel.index(4,3),3);
-    dataModel.setData(dataModel.index(4,4),1);
-    dataModel.setData(dataModel.index(4,5),2);
-    dataModel.setData(dataModel.index(4,6),4);
-    dataModel.setData(dataModel.index(4,7),6);
-    dataModel.setData(dataModel.index(4,8),8);
-    dataModel.setData(dataModel.index(4,9),10);
-
-    series0->setData(&dataModel);
+    QList<qreal> data0;
+    data0 << 1 << 2 << 3 << 4 << 5 << 6 << 7 << 8 << 9 << 10;
+    QList<qreal> data1;
+    data1 << 5 << 0 << 0 << 4 << 0 << 7 << 8 << 9 << 9 << 0;
+    QList<qreal> data2;
+    data2 << 3 << 5 << 8 << 13 << 8 << 5 << 3 << 2 << 1 << 1;
+    QList<qreal> data3;
+    data3 << 5 << 6 << 7 << 3 << 4 << 5 << 8 << 9 << 10 << 5;
+    QList<qreal> data4;
+    data4 << 9 << 7 << 5 << 3 << 1 << 2 << 4 << 6 << 8 << 10;
+
+    series0->addData(data0);
+    series0->addData(data1);
+    series0->addData(data2);
+    series0->addData(data3);
+    series0->addData(data4);
 
     ChartWidget* chartWidget =  new ChartWidget(&window);
     chartWidget->addSeries(series0);
diff --git a/src/barchart/barchartmodel.cpp b/src/barchart/barchartmodel.cpp
index cc1e612..62453fc 100644
--- a/src/barchart/barchartmodel.cpp
+++ b/src/barchart/barchartmodel.cpp
@@ -1,40 +1,54 @@
 #include <limits.h>
+#include <QVector>
+#include <QDebug>
 #include "barchartmodel_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 BarChartModel::BarChartModel(QObject *parent) :
     QObject(parent)
+    ,mRunningId(1)
 {
 }
 
-void BarChartModel::addSeries(BarChartSeriesBase& series)
+BarChartModel::~BarChartModel()
 {
-    mSeries.append(&series);
-    emit modelUpdated();
+    qDebug() << "BarChartModel::~BarChartModel";
+    foreach (DataContainer* c, mDataModel) {
+        delete c;
+    }
 }
 
-void BarChartModel::removeSeries(BarChartSeriesBase& series)
+int BarChartModel::addData(QList<qreal> data)
 {
-    int i = mSeries.indexOf(&series);
-    if (-1 == i) {
-        return;
+    qDebug() << "BarChartModel::addData" << data.count();
+    DataContainer* c = new DataContainer(data,mRunningId);
+    mDataModel.append(c);
+    mRunningId++;
+    return mRunningId-1;
+}
+
+void BarChartModel::removeData(int id)
+{
+    foreach(DataContainer* c, mDataModel) {
+        if (c->mId == id) {
+            mDataModel.removeOne(c);
+            delete c;
+        }
     }
-    mSeries.removeAt(i);
-    emit modelUpdated();
 }
 
-int BarChartModel::countSeries()
+int BarChartModel::countRows()
 {
-    return mSeries.count();
+    return mDataModel.count();
 }
 
-int BarChartModel::countItemsInSeries()
+int BarChartModel::countColumns()
 {
     int count(0);
-    for (int i=0; i<mSeries.count(); i++){
+    for (int i=0; i<mDataModel.count(); i++){
         // TODO: can we assume that all series have same number of values? If not. then which values are empty?
-        int temp = mSeries.at(i)->countValues();
+        int temp = mDataModel.at(i)->countColumns();
         if (temp > count) {
             count = temp;
         }
@@ -44,21 +58,26 @@ int BarChartModel::countItemsInSeries()
 
 int BarChartModel::countTotalItems()
 {
-    int total = mSeries.count() * countItemsInSeries();
+    int total = mDataModel.count() * countColumns();
+    qDebug() << "BarChartModel::countTotalItems datamodel count" << mDataModel.count();
+    qDebug() << "BarChartModel::countTotalItems countColumns count" << countColumns();
     return total;
 }
 
 int BarChartModel::min()
 {
-    Q_ASSERT(mSeries.count() > 0);
+    Q_ASSERT(mDataModel.count() > 0);
     // TODO: make min and max members and update them when data changes.
     // This is slower since they are checked every time, even if data is same since previous call.
     int min = INT_MAX;
 
-    for (int i=0; i <mSeries.count(); i++) {
-        int temp = mSeries.at(i)->min();
-        if (temp < min) {
-            min = temp;
+    for (int i=0; i <mDataModel.count(); i++) {
+        int itemCount = mDataModel.at(i)->countColumns();
+        for (int j=0; j<itemCount; j++) {
+            int temp = mDataModel.at(i)->valueAt(j);
+            if (temp < min) {
+                min = temp;
+            }
         }
     }
     return min;
@@ -66,32 +85,63 @@ int BarChartModel::min()
 
 int BarChartModel::max()
 {
-    Q_ASSERT(mSeries.count() > 0);
+    Q_ASSERT(mDataModel.count() > 0);
 
     // TODO: make min and max members and update them when data changes.
     // This is slower since they are checked every time, even if data is same since previous call.
     int max = INT_MIN;
 
-    for (int i=0; i <mSeries.count(); i++) {
-        int temp = mSeries.at(i)->min();
-        if (temp > max) {
-            max = temp;
+    for (int i=0; i <mDataModel.count(); i++) {
+        int itemCount = mDataModel.at(i)->countColumns();
+        for (int j=0; j<itemCount; j++) {
+            int temp = mDataModel.at(i)->valueAt(j);
+            if (temp > max) {
+                max = temp;
+            }
         }
     }
+
     return max;
 }
 
 qreal BarChartModel::valueAt(int series, int item)
 {
-    if ((series < 0) || (series >= mSeries.count())) {
+    if ((series < 0) || (series >= mDataModel.count())) {
         // No series, no value.
         return 0;
-    } else if ((item < 0) || (item >= mSeries.at(series)->countValues())) {
+    } else if ((item < 0) || (item >= mDataModel.at(series)->countColumns())) {
         // No item, no value.
         return 0;
     }
 
-    return mSeries.at(series)->valueAt(item);
+    return mDataModel.at(series)->valueAt(item);
+}
+
+qreal BarChartModel::columnSum(int column)
+{
+    int sum(0);
+    int count = mDataModel.count(); // Count rows
+
+    for (int row = 0; row < count; row++) {
+        if (column < mDataModel.at(row)->countColumns()) {
+            sum += mDataModel.at(row)->valueAt(column);
+        }
+    }
+    return sum;
+}
+
+qreal BarChartModel::maxColumnSum()
+{
+    int max = INT_MIN;
+    int count = countColumns();
+
+    for (int col=0; col<count; col++) {
+        int sum = columnSum(col);
+        if (sum > max) {
+            max = sum;
+        }
+    }
+    return max;
 }
 
 #include "moc_barchartmodel_p.cpp"
diff --git a/src/barchart/barchartmodel_p.h b/src/barchart/barchartmodel_p.h
index 808c74c..82b1527 100644
--- a/src/barchart/barchartmodel_p.h
+++ b/src/barchart/barchartmodel_p.h
@@ -2,11 +2,11 @@
 #define BARCHARTMODEL_H
 
 #include <QObject>
-#include "barchartseries.h"
+#include "qchartglobal.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
-// Model for bar chart.
+// Model for bar chart. Internal class.
 // TODO: Implement as QAbstractItemModel?
 
 class BarChartModel : public QObject //, public QAbstractItemModel
@@ -14,19 +14,24 @@ class BarChartModel : public QObject //, public QAbstractItemModel
     Q_OBJECT
 public:
     explicit BarChartModel(QObject *parent = 0);
+    ~BarChartModel();
     
-    // Takes reference, Series are owned by QChart or model?
-    void addSeries(BarChartSeriesBase& series);
-    void removeSeries(BarChartSeriesBase& series);
+    // Adds data to model. returns id.
+    int addData(QList<qreal> data);
+    void removeData(int id);
 
-    int countSeries();          // Number of series in model
-    int countItemsInSeries();   // Maximum number of items in series
+    int countRows();            // Number of series in model
+    int countColumns();         // Maximum number of items in series
     int countTotalItems();      // Total items in all series. Includes empty items.
 
+    // TODO: qreal these
     int max();  // Maximum value of all series
     int min();  // Minimum value of all series
     qreal valueAt(int series, int item);
 
+    qreal columnSum(int column);
+    qreal maxColumnSum();   // returns maximum sum of items in all columns.
+
 signals:
     void modelUpdated();
 
@@ -34,10 +39,23 @@ public slots:
     
 private:
 
-    // Data
-    QList<BarChartSeriesBase*> mSeries;
+    // Little helper class.
+    class DataContainer {
+        public:
+            DataContainer(QList<qreal> data, int id) : mId(id), mData(data) {}
+            int countColumns() { return mData.count(); }
+            qreal valueAt(int item) { return mData.at(item); }
+
+            int mId; // TODO: Is this needed?
+        private:
+            QList<qreal> mData;
+    };
+
+    // Owned. N series. each has a list of values.
+    QList<DataContainer*> mDataModel;
+    int mRunningId;
+    int mMaxColumns;    // longest series in datamodel
 
-    BarChartModel* mSingle;
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/barchart/barchartseries.h b/src/barchart/barchartseries.h
index fd58706..5e85940 100644
--- a/src/barchart/barchartseries.h
+++ b/src/barchart/barchartseries.h
@@ -21,7 +21,6 @@ public:
 
 private:
 
-    QAbstractItemModel* mModel;
     BarGroup* mBarGroup;
 };
 
diff --git a/src/barchart/barchartseriesbase.cpp b/src/barchart/barchartseriesbase.cpp
index ed4a841..48012fe 100644
--- a/src/barchart/barchartseriesbase.cpp
+++ b/src/barchart/barchartseriesbase.cpp
@@ -2,13 +2,15 @@
 #include <QDebug>
 #include "barchartseriesbase.h"
 #include "bargroup.h"
+#include "barchartmodel_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 BarChartSeriesBase::BarChartSeriesBase(QObject *parent)
     : QChartSeries(parent)
-    ,mData(0)
+    ,mModel(*(new BarChartModel(this))) // TODO: is this ok?
 {
+    qDebug() << "BarChartSeriesBase::BarChartSeriesBase";
 }
 /*
 bool BarChartSeriesBase::setModel(QAbstractItemModel* model)
@@ -17,11 +19,13 @@ bool BarChartSeriesBase::setModel(QAbstractItemModel* model)
     return true;
 }
 */
+/*
 bool BarChartSeriesBase::setData(QList<qreal>& data)
 {
     mData = &data;
     return true;
 }
+*/
 /*
 int BarChartSeriesBase::min()
 {
@@ -111,10 +115,22 @@ int BarChartSeriesBase::columnSum(int column)
     return sum;
 }
 */
-qreal BarChartSeriesBase::min()
+
+int BarChartSeriesBase::addData(QList<qreal> data)
 {
-    Q_ASSERT(mData != 0);
+    qDebug() << "BarChartSeriesBase::addData";
+    return mModel.addData(data);
+}
 
+void BarChartSeriesBase::removeData(int id)
+{
+    mModel.removeData(id);
+}
+
+qreal BarChartSeriesBase::min()
+{
+    return mModel.min();
+    /* Delegated to model
     int count = mData->count();
     int min = INT_MAX;
 
@@ -124,12 +140,13 @@ qreal BarChartSeriesBase::min()
         }
     }
     return min;
+    */
 }
 
 qreal BarChartSeriesBase::max()
 {
-    Q_ASSERT(mData != 0);
-
+    return mModel.max();
+    /* Delegated to model
     int count = mData->count();
     int max = INT_MIN;
 
@@ -139,18 +156,30 @@ qreal BarChartSeriesBase::max()
         }
     }
     return max;
+    */
+}
+
+int BarChartSeriesBase::countColumns()
+{
+    return mModel.countColumns();
+//    return mData->count();
+}
+
+qreal BarChartSeriesBase::valueAt(int series, int item)
+{
+    return mModel.valueAt(series,item);
+//    return mData->at(item);
 }
 
-int BarChartSeriesBase::countValues()
+qreal BarChartSeriesBase::maxColumnSum()
 {
-    Q_ASSERT(mData != 0);
-    return mData->count();
+    qDebug() << "BarChartSeriesBase::maxColumnSum" << mModel.maxColumnSum();
+    return mModel.maxColumnSum();
 }
 
-qreal BarChartSeriesBase::valueAt(int item)
+BarChartModel& BarChartSeriesBase::model()
 {
-    Q_ASSERT(mData != 0);
-    return mData->at(item);
+    return mModel;
 }
 
 #include "moc_barchartseriesbase.cpp"
diff --git a/src/barchart/barchartseriesbase.h b/src/barchart/barchartseriesbase.h
index be3d807..b0c60ae 100644
--- a/src/barchart/barchartseriesbase.h
+++ b/src/barchart/barchartseriesbase.h
@@ -6,10 +6,11 @@
 #include "qchartseries.h"
 #include "qchartglobal.h"
 
-class BarGroupBase;
-
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
+class BarGroupBase;
+class BarChartModel;
+
 // Container for series
 class QTCOMMERCIALCHART_EXPORT BarChartSeriesBase : public QChartSeries
 {
@@ -21,36 +22,29 @@ public:
     // from QChartSeries
     virtual QChartSeriesType type() const { return QChartSeries::SeriesTypeInvalid; }
 
-    // TODO: Better data model?
-//    virtual bool setModel(QAbstractItemModel* model);
-    virtual bool setData(QList<qreal>& data);
-
-    // Methods to find out minimum and maximum values of data
-//    int min(); // TODO: remove
-//    int max(); // TODO: remove
-//    int maxColumnSum();   // TODO: move to model. returns maximum sum of items in all columns.
-
-//    int countRows();    // TODO: remove.
-//    int countColumns();     // TODO: remove. Count items in one series.
-//    int countTotalItems();  // TODO: move to model
-//    int valueAt(int row, int column);   // TODO: move to model
-
-//    int columnSum(int column);  // TODO: move to model
+    // TODO: << operator for convinience
+    // Returns id for vector.
+    int addData(QList<qreal> data);
+    void removeData(int id);
 
     qreal min();
     qreal max();
-    int countValues();
-    qreal valueAt(int item);
+    int countColumns();     // Count items in one series.
+    qreal valueAt(int series, int item);
+    qreal maxColumnSum();
+
+    BarChartModel& model();
+
+signals:
+    void changed(int index);
 
 public Q_SLOTS:
 
 private:
 
-    QAbstractItemModel* mModel;
+    BarChartModel& mModel;
     BarGroupBase* mBarGroup;
 
-    QList<qreal>* mData;
-
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/barchart/bargroup.cpp b/src/barchart/bargroup.cpp
index f52955b..a77da51 100644
--- a/src/barchart/bargroup.cpp
+++ b/src/barchart/bargroup.cpp
@@ -13,22 +13,17 @@ BarGroup::BarGroup(BarChartSeries& series, QGraphicsItem *parent) :
 
 void BarGroup::layoutChanged()
 {
+    qDebug() << "BarGroup::layoutChanged";
     // Scale bars to new layout
     // Layout for bars:
-   /*
-    if (mSeries.countRows() <= 0) {
-        // Nothing to do.
-        return;
-    }
-*/
-    if (mModel.countSeries() <= 0) {
+    if (mModel.countRows() <= 0) {
         return;
     }
 
     // TODO: better way to auto-layout?
     // Use reals for accurancy (we might get some compiler warnings... :)
-    int itemCount = mModel.countItemsInSeries();
-    int seriesCount = mModel.countSeries();
+    int itemCount = mModel.countColumns();
+    int seriesCount = mModel.countRows();
 
     qreal tW = mWidth;
     qreal tH = mHeight;
diff --git a/src/barchart/bargroupbase.cpp b/src/barchart/bargroupbase.cpp
index d691732..390864b 100644
--- a/src/barchart/bargroupbase.cpp
+++ b/src/barchart/bargroupbase.cpp
@@ -9,15 +9,13 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 BarGroupBase::BarGroupBase(BarChartSeriesBase& series, QGraphicsItem *parent)
     : ChartItem(parent)
-//    ,mSeries(series)
     ,mBarDefaultWidth(20) // TODO: remove hard coding, when we have layout code ready
     ,mLayoutSet(false)
     ,mLayoutDirty(true)
     ,mTheme(0)
     ,mSeparatorsVisible(true)
+    ,mModel(series.model())
 {
-    mModel.addSeries(series);
-    dataChanged();
 }
 
 void BarGroupBase::setSeparatorsVisible(bool visible)
@@ -27,16 +25,17 @@ void BarGroupBase::setSeparatorsVisible(bool visible)
 
 void BarGroupBase::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
+    qDebug() << "BarGroupBase::paint" << childItems().count();
     if (!mLayoutSet) {
         qDebug() << "BarGroupBase::paint called without layout set. Aborting.";
         return;
     }
-    if (mLayoutDirty) {
+//    if (mLayoutDirty) {
         // Layout or data has changed. Need to redraw.
         foreach(QGraphicsItem* i, childItems()) {
             i->paint(painter,option,widget);
         }
-    }
+//    }
 }
 
 QRectF BarGroupBase::boundingRect() const
@@ -70,11 +69,6 @@ void BarGroupBase::dataChanged()
 {
     qDebug() << "BarGroupBase::dataChanged";
 
-    // Find out maximum and minimum of all series.
-    // TODO: is this actually needed?
-//    mMax = mModel.max();
-//    mMin = mModel.min();
-
     // Delete old bars
     foreach (QGraphicsItem* item, childItems()) {
         delete item;
@@ -88,7 +82,7 @@ void BarGroupBase::dataChanged()
     }
 
     // TODO: labels from series. This creates just some example labels
-    int count = mModel.countItemsInSeries();    // mSeries.countColumns();
+    int count = mModel.countColumns();    // mSeries.countColumns();
     for (int i=0; i<count; i++) {
         BarLabel* label = new BarLabel(this);
         QString text("Label " + QString::number(i));
@@ -96,7 +90,7 @@ void BarGroupBase::dataChanged()
         childItems().append(label);
     }
 
-    count = mModel.countItemsInSeries() - 1;    // mSeries.countColumns() - 1; // There is one less separator than columns
+    count = mModel.countColumns() - 1;    // mSeries.countColumns() - 1; // There is one less separator than columns
     for (int i=0; i<count; i++) {
         Separator* sep = new Separator(this);
         sep->setColor(QColor(255,0,0,255));     // TODO: color for separations from theme
@@ -111,12 +105,14 @@ void BarGroupBase::dataChanged()
 
 void BarGroupBase::handleModelChanged(int index)
 {
-    qDebug() << "BarGroupBase::handleModelChanged";
+    qDebug() << "BarGroupBase::handleModelChanged PUUH" << index;
+    dataChanged();
 }
 
 void BarGroupBase::handleDomainChanged(const Domain& domain)
 {
-    qDebug() << "BarGroupBase::handleModelChanged";
+    qDebug() << "BarGroupBase::handleDomainChanged";
+    dataChanged();
 }
 
 void BarGroupBase::handleGeometryChanged(const QRectF& rect)
diff --git a/src/barchart/bargroupbase.h b/src/barchart/bargroupbase.h
index a2c9a97..bb73044 100644
--- a/src/barchart/bargroupbase.h
+++ b/src/barchart/bargroupbase.h
@@ -17,7 +17,6 @@ class BarGroupBase : public QObject, public ChartItem
     Q_OBJECT
 public:
     BarGroupBase(BarChartSeriesBase& series, QGraphicsItem *parent = 0);
-//    BarGroupBase(BarChartModel& model, QGraphicsItem *parent = 0);
     void setSeparatorsVisible(bool visible = true);
 
 public: // From ChartItem
@@ -47,8 +46,6 @@ protected slots:
 
 protected:
 
-    //BarChartSeriesBase& mSeries;
-
     // TODO: consider these.
     int mMin;           // Min and max values of data. (updated when data is changed, used when drawing)
     int mMax;
@@ -65,7 +62,7 @@ protected:
     ChartTheme* mTheme;
     bool mSeparatorsVisible;
 
-    BarChartModel mModel;
+    BarChartModel& mModel;
 
 };
 
diff --git a/src/barchart/percentbarchartseries.h b/src/barchart/percentbarchartseries.h
index f8e32ee..ce2d25c 100644
--- a/src/barchart/percentbarchartseries.h
+++ b/src/barchart/percentbarchartseries.h
@@ -22,7 +22,6 @@ public Q_SLOTS:
 
 private:
 
-    QAbstractItemModel* mModel;
     PercentBarGroup* mPercentBarGroup;
 };
 
diff --git a/src/barchart/percentbargroup.cpp b/src/barchart/percentbargroup.cpp
index 94beb34..9eba91e 100644
--- a/src/barchart/percentbargroup.cpp
+++ b/src/barchart/percentbargroup.cpp
@@ -14,32 +14,31 @@ PercentBarGroup::PercentBarGroup(PercentBarChartSeries& series, QGraphicsItem *p
 
 void PercentBarGroup::layoutChanged()
 {
-    /*
     // Scale bars to new layout
     // Layout for bars:
-    if (mSeries.countRows() <= 0) {
+    if (mModel.countRows() <= 0) {
         // Nothing to do.
         return;
     }
 
     // TODO: better way to auto-layout
     // Use reals for accurancy (we might get some compiler warnings... :)
-    int count = mSeries.countColumns();
+    int count = mModel.countColumns();
     int itemIndex(0);
     qreal tW = mWidth;
     qreal tC = count+1;
     qreal xStep = (tW/tC);
 //    qreal xPos = ((tW/tC) + mBarDefaultWidth / 2);
     qreal xPos = ((tW/tC) - mBarDefaultWidth / 2);
-    int labelIndex = mSeries.countColumns() * mSeries.countRows();
+    int labelIndex = mModel.countColumns() * mModel.countRows();
 
-    for (int column = 0; column < mSeries.countColumns(); column++) {
-        qreal colSum = mSeries.columnSum(column);
+    for (int column = 0; column < mModel.countColumns(); column++) {
+        qreal colSum = mModel.columnSum(column);
         qreal h = mHeight;
         qreal scale = (h / colSum);
         qreal yPos = h;
-        for (int row=0; row < mSeries.countRows(); row++) {
-            qreal barHeight = mSeries.valueAt(row, column) * scale;
+        for (int row=0; row < mModel.countRows(); row++) {
+            qreal barHeight = mModel.valueAt(row, column) * scale;
             Bar* bar = reinterpret_cast<Bar*> (childItems().at(itemIndex));
 
             // TODO: width settable per bar?
@@ -60,14 +59,14 @@ void PercentBarGroup::layoutChanged()
     // Position separators
     int separatorIndex = labelIndex;    // Separators are after labels in childItems(). TODO: better way to store these?
     xPos = xStep + xStep/2;             // Initial position is between first and second group. ie one and half steps from left.
-    for (int s=0; s < mSeries.countColumns() - 1; s++) {
+    for (int s=0; s < mModel.countColumns() - 1; s++) {
         Separator* sep = reinterpret_cast<Separator*> (childItems().at(separatorIndex));
         sep->setPos(xPos,0);
         sep->setSize(QSizeF(1,mHeight));
         xPos += xStep;
         separatorIndex++;
     }
-*/
+
     mLayoutDirty = true;
 }
 
diff --git a/src/barchart/separator.cpp b/src/barchart/separator.cpp
index 0f2135e..d280d55 100644
--- a/src/barchart/separator.cpp
+++ b/src/barchart/separator.cpp
@@ -28,7 +28,7 @@ void Separator::setSize(const QSizeF &size)
 
 void Separator::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
-    qDebug() << "separator::paint" << boundingRect();
+//    qDebug() << "separator::paint" << boundingRect();
     QPen pen(mColor);
     painter->setPen(pen);
     painter->drawLine(mXpos,mYpos,mXpos,mHeight);
diff --git a/src/barchart/stackedbarchartseries.h b/src/barchart/stackedbarchartseries.h
index b34d3b9..680c5a4 100644
--- a/src/barchart/stackedbarchartseries.h
+++ b/src/barchart/stackedbarchartseries.h
@@ -22,7 +22,6 @@ public Q_SLOTS:
 
 private:
 
-    QAbstractItemModel* mModel;
     StackedBarGroup* mStackedBarGroup;
 };
 
diff --git a/src/barchart/stackedbargroup.cpp b/src/barchart/stackedbargroup.cpp
index 9accb73..82db63e 100644
--- a/src/barchart/stackedbargroup.cpp
+++ b/src/barchart/stackedbargroup.cpp
@@ -3,7 +3,7 @@
 #include "barlabel_p.h"
 #include "separator_p.h"
 #include <QDebug>
-#include <QPainter>
+//#include <QPainter>
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
@@ -14,15 +14,15 @@ StackedBarGroup::StackedBarGroup(StackedBarChartSeries& series, QGraphicsItem *p
 
 void StackedBarGroup::layoutChanged()
 {
-/*
+
     // Scale bars to new layout
     // Layout for bars:
-    if (mSeries.countRows() <= 0) {
+    if (mModel.countRows() <= 0) {
         // Nothing to do.
         return;
     }
 
-    if (mSeries.countColumns() == 0) {
+    if (mModel.countColumns() == 0) {
         // Nothing to do
         return;
     }
@@ -30,21 +30,21 @@ void StackedBarGroup::layoutChanged()
     // TODO: better way to auto-layout
     // Use reals for accurancy (we might get some compiler warnings... :)
     // TODO: use temp variable for column count...
-    qreal maxSum = mSeries.maxColumnSum();
+    qreal maxSum = mModel.maxColumnSum();
     qreal h = mHeight;
     qreal scale = (h / maxSum);
 
     int itemIndex(0);
     qreal tW = mWidth;
-    qreal tC = mSeries.countColumns() + 1;
+    qreal tC = mModel.countColumns() + 1;
     qreal xStep = (tW/tC);
     qreal xPos = ((tW/tC) - mBarDefaultWidth / 2);
-    int labelIndex = mSeries.countColumns() * mSeries.countRows();
+    int labelIndex = mModel.countRows() * mModel.countColumns();
 
-    for (int column = 0; column < mSeries.countColumns(); column++) {
+    for (int column = 0; column < mModel.countColumns(); column++) {
         qreal yPos = h;
-        for (int row=0; row < mSeries.countRows(); row++) {
-            qreal barHeight = mSeries.valueAt(row, column) * scale;
+        for (int row=0; row < mModel.countRows(); row++) {
+            qreal barHeight = mModel.valueAt(row, column) * scale;
             Bar* bar = reinterpret_cast<Bar*> (childItems().at(itemIndex));
 
             // TODO: width settable per bar?
@@ -68,14 +68,14 @@ void StackedBarGroup::layoutChanged()
     // Position separators
     int separatorIndex = labelIndex;    // Separators are after labels in childItems(). TODO: better way to store these?
     xPos = xStep + xStep/2;             // Initial position is between first and second group. ie one and half steps from left.
-    for (int s=0; s < mSeries.countColumns() - 1; s++) {
+    for (int s=0; s < mModel.countColumns() - 1; s++) {
         Separator* sep = reinterpret_cast<Separator*> (childItems().at(separatorIndex));
         sep->setPos(xPos,0);
         sep->setSize(QSizeF(1,mHeight));
         xPos += xStep;
         separatorIndex++;
     }
-*/
+
     mLayoutDirty = true;
 }
 
diff --git a/src/chartdataset.cpp b/src/chartdataset.cpp
index 76fbcf3..78469dc 100644
--- a/src/chartdataset.cpp
+++ b/src/chartdataset.cpp
@@ -54,38 +54,33 @@ void ChartDataSet::addSeries(QChartSeries* series)
         case QChartSeries::SeriesTypeBar: {
 
             BarChartSeries* barSeries = static_cast<BarChartSeries*>(series);
-            qreal x = barSeries->countValues();
+            qreal x = barSeries->countColumns();
             qreal y = barSeries->max();
             domain.m_minX = qMin(domain.m_minX,x);
             domain.m_minY = qMin(domain.m_minY,y);
             domain.m_maxX = qMax(domain.m_maxX,x);
             domain.m_maxY = qMax(domain.m_maxY,y);
-
         }
         break;
         case QChartSeries::SeriesTypeStackedBar: {
 
             StackedBarChartSeries* stackedBarSeries = static_cast<StackedBarChartSeries*>(series);
-/*
             qreal x = stackedBarSeries->countColumns();
             qreal y = stackedBarSeries->maxColumnSum();
             domain.m_minX = qMin(domain.m_minX,x);
             domain.m_minY = qMin(domain.m_minY,y);
             domain.m_maxX = qMax(domain.m_maxX,x);
             domain.m_maxY = qMax(domain.m_maxY,y);
-*/
         }
             break;
         case QChartSeries::SeriesTypePercentBar: {
 
             PercentBarChartSeries* percentBarSeries = static_cast<PercentBarChartSeries*>(series);
-/*
             qreal x = percentBarSeries->countColumns();
             domain.m_minX = qMin(domain.m_minX,x);
             domain.m_minY = 0;
             domain.m_maxX = qMax(domain.m_maxX,x);
             domain.m_maxY = 100;
-*/
         }
             break;