java.beans
Interface Visibility
java.lang.Object
|
+--java.beans.Visibility
public interface Visibility
Visibility is an interface a Bean may implement so that the environment
can tell the Bean whether there is a GUI or not, and so that the Bean
can tell the environment whether it needs one or can run without one.
Sun decided not to use standard Introspection patterns so that these
methods did not get included when the Introspector made its sweep on
the class.
Since:Author:avoidingGui
public boolean avoidingGui()
Tells whether Bean is trying not to use the GUI.
If needsGui() is true, this method should always return false.
Returns:
- true if definitely not using GUI, otherwise false.
dontUseGui
public void dontUseGui()
Tells the Bean not to use GUI methods.
If needsGUI() is false, then after this method is called,
avoidingGui() should return true.
needsGui
public boolean needsGui()
Tells whether the Bean can run without a GUI or not.
Returns:
- false if Bean can run without a GUI, else true.
okToUseGui
public void okToUseGui()
Tells the Bean it may use the GUI.
The Bean is not required to use the GUI in this case, it is
merely being permitted to use it. If needsGui() is
false, avoidingGui() may return true or false after this method
is called.
Sun decided not to use standard Introspection patterns so that these methods did not get included when the Introspector made its sweep on the class.