10-152-313 - Object-Oriented Programming 3

Optional Challenge 1: Create buttons to insert money, select product, take change, take product, and kick machine. In the method that would dispense the product include a random occurrence of the item getting stuck. In the kick method, include a random chance of freeing the product and/or setting off an alarm.

Integrate the completed assignment with the existing Zoo project.

Implement the changes specified in the following UML class diagram.

1. When creating classes be sure to:
   1. Ensure the class in the root namespace. This can be done in one of two ways. Either by adding the class in the project, i.e. scenario, or by adding the class to the business classes folder and removing the ".Business_Classes" designation from the namespace.
   2. insert the following line of code immediately above the class definition:
      [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.StyleCop.CSharp.MaintainabilityRules", "SA1401:FieldsMustBePrivate", Justification = "Encapsulation not taught.")]
2. Open the main window (MainWindow.xaml) in designer mode (right-click and click “View Designer” or press Shift-F7 to go to designer mode).
3. Create the button(s) for this week’s assignment. Show/Hide Details
   1. Navigate to the Toolbox (if hidden, restore it by clicking View | Toolbox).
   2. Expand the Common WPF Controls section of the Toolbox.
   3. Click the Button control in the Toolbox, making it the active control type.
   4. Place a new button on the window by clicking on the background of the window with the Button control selected per “step c” above.
   5. Position the new button immediately beneath and aligned with the left of the existing button(s) (it will snap in place, showing a recommended margin in red).
   6. Stretch the button to be the same width as the previous button(s) (it will snap to the correct width).
   7. Navigate to the Properties Window (if hidden, restore it by clicking View | Properties Window).
   8. Ensure that the Properties Window is in “property mode” (click on its wrench icon)
   9. Ensure that the new button is the currently-focused control.
   10. Enter a Name in the Properties Window of “assignment[lpNumber][lpWeekNumber]Button”
   11. Enter a Content in the Properties Window of “Assignment 2.2”
   12. Change the Properties Window to “event mode” (click on its lightning bolt icon)
   13. Double-click in the Click event, which will:
       1. Create an event handler for the button
       2. Navigate to code view (can alternately view code by right-click and click “View Code” or press F7 to go to designer mode).

Implement the states shown in this UML state diagram: