diff --git a/src/channelmanager.h b/src/channelmanager.h
--- a/src/channelmanager.h
+++ b/src/channelmanager.h
@@ -1,5 +1,5 @@
 /*
-  Copyright © 2016 Hasan Yavuz Özderya
+  Copyright © 2017 Hasan Yavuz Özderya
 
   This file is part of serialplot.
 
@@ -21,12 +21,13 @@
 #define CHANNELMANAGER_H
 
 #include <QObject>
-#include <QStringListModel>
+#include <QStringList>
 #include <QModelIndex>
 #include <QVector>
 #include <QSettings>
 
 #include "framebuffer.h"
+#include "channelinfomodel.h"
 
 class ChannelManager : public QObject
 {
@@ -38,36 +39,55 @@ public:
     unsigned numOfChannels();
     unsigned numOfSamples();
     FrameBuffer* channelBuffer(unsigned channel);
-    QStringListModel* channelNames();
     QString channelName(unsigned channel);
     /// Stores channel names into a `QSettings`
     void saveSettings(QSettings* settings);
     /// Loads channel names from a `QSettings`.
     void loadSettings(QSettings* settings);
+    /// Returns a model that manages channel information (name, color etc)
+    ChannelInfoModel* infoModel();
+    /// Returns a list of channel names
+    QStringList channelNames();
 
 signals:
     void numOfChannelsChanged(unsigned value);
     void numOfSamplesChanged(unsigned value);
     void channelNameChanged(unsigned channel, QString name);
+    void dataAdded(); ///< emitted when data added to channel man.
 
 public slots:
     void setNumOfChannels(unsigned number);
     void setNumOfSamples(unsigned number);
-    void setChannelName(unsigned channel, QString name);
-    void addChannelData(unsigned channel, double* data, unsigned size);
+    /**
+     * Add data for all channels.
+     *
+     * All channels data is provided in a single array which contains equal
+     * number of samples for all channels. Structure is as shown below:
+     *
+     * [CH0_SMP0, CH0_SMP1 ... CH0_SMPN, CH1_SMP0, CH1_SMP1, ... , CHN_SMPN]
+     *
+     * @param data samples for all channels
+     * @param size size of `data`, must be multiple of `numOfChannels`
+     */
+    void addData(double* data, unsigned size);
+
+    /// When paused `addData` does nothing.
+    void pause(bool paused);
 
 private:
     unsigned _numOfChannels;
     unsigned _numOfSamples;
+    bool _paused;
     QList<FrameBuffer*> channelBuffers;
-    QStringListModel _channelNames;
+    // QStringListModel _channelNames;
+    ChannelInfoModel _infoModel;
 
     void addChannelName(QString name); ///< appends a new channel name at the end of list
 
 private slots:
-    void onChannelNameDataChange(const QModelIndex & topLeft,
-                                 const QModelIndex & bottomRight,
-                                 const QVector<int> & roles = QVector<int> ());
+    void onChannelInfoChanged(const QModelIndex & topLeft,
+                              const QModelIndex & bottomRight,
+                              const QVector<int> & roles = QVector<int> ());
 };
 
 #endif // CHANNELMANAGER_H