Design for Button5

Design of Button5 Program

• Main:

  • Instance Variables: none
  • Methods: none
  • Responsibilities:
    • Set up the main window
    • Create main objects we need: MyCanvas, Application, 2 control panels
    • Lay out the main window (canvas, 2 control panels)

• MyCanvas:

  • Instance Variables:
    • Pointer to Application
  • Methods:
    • paintComponent() callback, overloaded from JComponent
    • MouseListener callbacks, overloaded from MouseListener
    • (setApplication(), to avoid forward reference)
  • Responsibilities:
    • Catch paintComponent() callback and delegate to Application
    • Catch mousePressed() callback and delegate to Application
  • Uses:
    • Application: which does the redraw by calling Square
    • Application: which does the input by calling Square

• Application:

  • Instance Variables:
    • Pointer to MyCanvas
    • Application data: List of squares, boolean drawX
    • [and setX()]
    • Current square
    • [and getCurrent()]
  • Methods:
    • drawApplication()
    • doMouse()
  • Responsibilities:
    • Keep list of Squares
    • Handle functions that iterate over list (drawApplication, doMouse)
    • Remember current square (really belongs in UI though)
    • Maintain and handle drawX option
  • Uses:
    • MyCanvas: to redraw after change drawX
    • Square: to redraw themselves
    • Square: to input themselves

• Square (is a part of the "application" data)

  • Instance Variables:
    • Pointer to MyCanvas
    • Info about the square: loc
  • Methods:
    • draw()
    • left(), right(), bigger(), smaller()
    • boolean isInside()
  • Responsibilities:
    • Initialize to unique starting position
    • Initialize and maintain "application data"
    • Draw yourself (given g and isCurrent)
    • Know how to move left/right/bigger/smaller
    • Answer question is Point inside you?
  • Uses:
    • MyCanvas: for redrawing everything after move

• ControlGlobal:

  • (Inherited from ControlPanel)
    • Pointer to application
  • Methods:
    • constructor()
  • Responsibilities:
    • Set up JPanel
    • Create button
  • Uses:
    • Application: just to pass to Button* constructors

• ControlSingle:

  • (Inherited from ControlPanel)
    • Pointer to application
  • Methods:
    • constructor()
  • Responsibilities:
    • Set up JPanel
    • Create buttons
  • Uses:
    • Application: just to pass to Button* constructors

• ButtonLeft, Right, Bigger, Smaller

  • (Inherited from MyButton)
    • Pointer to application
  • Methods:
    • actionPerformed() callback
  • Responsibilities:
    • Set up the JButton
    • Provide the callback
  • Uses:
    • Application: for getCurrent
    • Square: for action on getCurrent

• ButtonX

  • (Inherited from MyButton)
    • Pointer to application
  • Instance Variables:
    • boolean buttonState
  • Methods:
    • actionPerformed() callback
  • Responsibilities:
    • Set up the JButton
    • Provide the callback
    • Remember current state of toggle
  • Uses:
    • Application: to execute setX

Aggregation Hierarchy

• Main

  • MyCanvas
  • Application
    • Square(s)
  • ControlGlobal
    • ButtonX
  • ControlSingle
    • ButtonBigger
    • ButtonLeft
    • ButtonRight
    • ButtonSmaller

Class Hierarchy

• Main

• MyCanvas

• Application

• Square

• ControlPanel

  • ControlGlobal
  • ControlSingle

• MyButton

  • ArrowButton
    • ButtonLeft
    • ButtonRight
  • TextButton
    • ButtonBigger
    • ButtonSmaller
    • ButtonX