java.beans
Class PropertyEditorSupport
- PropertyEditor
PropertyEditorSupport helps with PropertyEditors,
implementing base functionality that they usually must
have but which is a pain to implement. You may extend
from this class or use it as a standalone.
This class does not do any painting or actual editing.
For that, you must use or extend it. See the
PropertyEditor class for better descriptions of what
the various methods do.
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
PropertyEditorSupport
public PropertyEditorSupport()
Call this constructor when you are deriving from
PropertyEditorSupport.
Using this constructor the event source is this PropertyEditorSupport
instance itself.
PropertyEditorSupport
public PropertyEditorSupport(Object source)
Call this constructor when you are using
PropertyEditorSupport as a helper object.
This constructor throws a NullPointerException when source is null,
for compatibility reasons with J2SDK 1.5.0 .
source - The source to use when firing
property change events.
firePropertyChange
public void firePropertyChange()
Notifies people that we've changed, although we don't
tell them just how.
getAsText
public String getAsText()
Gets the value as text.
In this class, you cannot count on getAsText() doing
anything useful, although in this implementation I
do toString().
- getAsText in interface PropertyEditor
getJavaInitializationString
public String getJavaInitializationString()
Gets the Java initialization String for the current
value of the Object. This class returns gibberish or
null (though the spec does not say which).
Implementation Note: This class
returns the string "@$#^" to make sure the code will
be broken, so that you will know to override it when
you create your own property editor.
- getJavaInitializationString in interface PropertyEditor
- the Java initialization string.
getSource
public Object getSource()
Returns the bean that is used as the source of events.
setAsText
public void setAsText(String s)
throws IllegalArgumentExceptionSets the value as text.
In this class, you cannot count on setAsText() doing
anything useful across implementations.
Implementation Note: In this
implementation it checks if the String is "null", and
if it is, sets the value to null, otherwise it throws
an IllegalArgumentException.
- setAsText in interface PropertyEditor
s - the text to convert to a new value.
setSource
public void setSource(Object source)
Sets the bean that is used as the source of events
when property changes occur.
The event source bean is for informational purposes only
and should not be changed by the PropertyEditor.
setValue
public void setValue(Object newValue)
Sets the current value of the property and a property change
event is fired to all registered PropertyChangeListener instances.
- setValue in interface PropertyEditor
newValue - The new value for the property.
java.beans.PropertyEditorSupport
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