CS2114

Interface ClickAction

All Known Implementing Classes:

Button, CircleShape, Shape, SquareShape, TextShape, Widget

public interface ClickAction

Method Summary

Modifier and Type	Method and Description
void	onClick(Command scl) onClick - third version of this method, this one uses a listener object of type Command.
void	onClick(java.lang.Object object) onClick - sets up the handler for what to do when this button is clicked.
void	onClick(java.lang.Object object, java.lang.String methodName) onClick - another version of callOnClick, this one specifies the method to call in the parameter.

Method Detail

onClick

void onClick(java.lang.Object object)

onClick - sets up the handler for what to do when this button is clicked. This method will call a method named "clicked"+getTitle() (if it exists) in the object. It is the developers responsibility that this object is valid and still exists when the button is clicked. The selection of the method to call occurs when the button is clicked, so changing the title of the button could in effect cause different methods to be called. If there is no method with the name "clicked"+getTitle() when the button is clicked, then the call on click does nothing.

Parameters:

object - receives the call when clicked, must not be null

onClick

void onClick(java.lang.Object object,
             java.lang.String methodName)

onClick - another version of callOnClick, this one specifies the method to call in the parameter. All the caveats specified

Parameters:

object - receives the call upon click, can't be null

methodName - name of method to be called, can't be null

See Also:

apply. if the method doesn't exist, this will generate an exception (NoSuchMethod).

onClick

void onClick(Command scl)

onClick - third version of this method, this one uses a listener object of type Command.

Parameters:

scl - command object, can't be null