1 files changed, 33 insertions, 0 deletions
diff --git a/src/statistics/TimeChartPage.h b/src/statistics/TimeChartPage.h
new file mode 100644
index 0000000..5e48d4c
--- /dev/null
+++ b/src/statistics/TimeChartPage.h
@@ -0,0 +1,33 @@
+#ifndef TIME_CHART_PAGE_H
+#define TIME_CHART_PAGE_H
+
+#include <QtWidgets>
+#include "BaseStatPage.h"
+#include "../charts/DataPoint.h"
+
+class TimeChart;
+class StatisticsParams;
+class CardPack;
+
+class TimeChartPage: public BaseStatPage
+{
+    Q_OBJECT
+public:
+    TimeChartPage(const StatisticsParams* statParams);
+    void updateDataSet();
+    bool usesTimePeriod() const {return true;}
+
+protected:
+    virtual QList<QDateTime> getDates(const CardPack* pack) const = 0;
+    virtual int getDataDirection() const = 0;
+    QWidget* createChart();
+
+private:
+    int getStudyPeriodLength(const QList<QDateTime>& dates) const;
+    int getReviewsNum(const QList<QDateTime>& dates, int period) const;
+
+private:
+    TimeChart* chart;
+};
+
+#endif