Refactoring

[tyichye]

There are classes that perform tasks outside their scope.
An example - code to handle date drawing inside the widget circle was inserted as part of the configuration class instead of the widgetProvider class who is responsible for drawing the widget.

Using composition design pattern the configuration class can hold widgetProvider object and call the widgetProvider draw function to draw the widget on the screen. Inside widgetProvider draw function we will implement the date drawing.