Package edu.hws.jcm.awt
Interface InputObject
- All Superinterfaces:
Serializable
- All Known Implementing Classes:
Animator
,Controller
,CoordinateRect
,DisplayCanvas
,DraggablePoint
,ExpressionInput
,LimitControlPanel
,MouseTracker
,VariableInput
,VariableSlider
An InputObject represents some sort of value that can be changed
by, for example, user interaction with a GUI element. The value can
actually change only when the checkInput() method is called. Generally,
an InputObject is a GUI element with an associated MathObject such as
a Variable or Expression. For example, a VariableInput is a text-input
box where the user can enter the value of a Variable. However, the
input is only checked and the value of the variable can only change
when the VariableInput's checkInput() method is called. The checkInput()
method is generally meant to be called by a Controller object. The
checkInput() method should throw a JCMError if an error occurs.
See the Controller class for more information.
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Method Summary
Modifier and TypeMethodDescriptionvoid
Check and possibly change the value associated with this InputObject.void
This method was introduced to provide a common interface for setting a Controller that is to be notified when there is a change in the InputObject.
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Method Details
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checkInput
void checkInput()Check and possibly change the value associated with this InputObject. -
notifyControllerOnChange
This method was introduced to provide a common interface for setting a Controller that is to be notified when there is a change in the InputObject. (This was introduced late in development, to be used by edu.hws.jcm.awt.JCMPanel.gatherInputs(). In all the standard classes that implement the InputObject interface, this method simply calls a setOnChange or setOnUserAction method.)
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