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com.flexstor.common.awt
Class Controller  

java.lang.Object
  java.util.Observable
      com.flexstor.common.awt.Controller

All Implemented Interfaces:

ActionCheckerI, java.util.Observer

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public abstract class Controller

extends java.util.Observable

implements java.util.Observer, ActionCheckerI

This class handles state changes from the model and passes them on to registered UI controllers, i.e. menus and toolbars. by using an Observable/Observer pattern.

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Field Summary

 

Fields inherited from class java.util.Observable

 

Constructor Summary

Controller()

 

Method Summary
abstract  boolean	canPerform(int nActionId)           This method has to return the value of the corresponding state member variable, indicating if the action is allowed.
void	update(java.util.Observable model, java.lang.Object notifyCommand)           Reacts to a NOTIFY_STATE_CHANGED and NOTIFY_BUSY from an observable.
abstract  void	updateStates(java.lang.Object model)           This method has to query the model for the states of interest and store them appropriately in member variables.

 

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

Controller

public Controller()

Method Detail

canPerform

public abstract boolean canPerform(int nActionId)

This method has to return the value of the corresponding state member variable, indicating if the action is allowed. This requires mapping of each member variable to an action id.

Specified by:

canPerform in interface ActionCheckerI

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updateStates

public abstract void updateStates(java.lang.Object model)

This method has to query the model for the states of interest and store them appropriately in member variables.

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update

public void update(java.util.Observable model,
                   java.lang.Object notifyCommand)

Reacts to a NOTIFY_STATE_CHANGED and NOTIFY_BUSY from an observable.

Specified by:

update in interface java.util.Observer

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Overview  Package   Class  Use  Deprecated  Index
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SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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