File	Doc	Category	Size	Date	Package
PropertyEditor.java	API Doc	Java SE 5 API	8127	Fri Aug 26 14:56:58 BST 2005	java.beans

PropertyEditor

Fields Summary

Constructors Summary

Methods Summary
public void	addPropertyChangeListener(java.beans.PropertyChangeListener listener) Register a listener for the PropertyChange event. When a PropertyEditor changes its value it should fire a PropertyChange event on all registered PropertyChangeListeners, specifying the null value for the property name and itself as the source. param listener An object to be invoked when a PropertyChange event is fired.
public java.lang.String	getAsText() Gets the property value as text. return The property value as a human editable string. Returns null if the value can't be expressed as an editable string. If a non-null value is returned, then the PropertyEditor should be prepared to parse that string back in setAsText().
public java.awt.Component	getCustomEditor() A PropertyEditor may choose to make available a full custom Component that edits its property value. It is the responsibility of the PropertyEditor to hook itself up to its editor Component itself and to report property value changes by firing a PropertyChange event. The higher-level code that calls getCustomEditor may either embed the Component in some larger property sheet, or it may put it in its own individual dialog, or ... return A java.awt.Component that will allow a human to directly edit the current property value. May be null if this is not supported.
public java.lang.String	getJavaInitializationString() Returns a fragment of Java code that can be used to set a property to match the editors current state. This method is intended for use when generating Java code to reflect changes made through the property editor. The code fragment should be context free and must be a legal Java expression as specified by the JLS. Specifically, if the expression represents a computation then all classes and static members should be fully qualified. This rule applies to constructors, static methods and non primitive arguments. Caution should be used when evaluating the expression as it may throw exceptions. In particular, code generators must ensure that generated code will compile in the presence of an expression that can throw checked exceptions. Example results are: Primitive expresssion: 2 Class constructor: new java.awt.Color(127,127,34) Static field: java.awt.Color.orange Static method: javax.swing.Box.createRigidArea(new java.awt.Dimension(0, 5)) return a fragment of Java code representing an initializer for the current value. It should not contain a semi-colon (';') to end the expression.
public java.lang.String[]	getTags() If the property value must be one of a set of known tagged values, then this method should return an array of the tags. This can be used to represent (for example) enum values. If a PropertyEditor supports tags, then it should support the use of setAsText with a tag value as a way of setting the value and the use of getAsText to identify the current value. return The tag values for this property. May be null if this property cannot be represented as a tagged value.
public java.lang.Object	getValue() Gets the property value. return The value of the property. Primitive types such as "int" will be wrapped as the corresponding object type such as "java.lang.Integer".
public boolean	isPaintable() Determines whether this property editor is paintable. return True if the class will honor the paintValue method.
public void	paintValue(java.awt.Graphics gfx, java.awt.Rectangle box) Paint a representation of the value into a given area of screen real estate. Note that the propertyEditor is responsible for doing its own clipping so that it fits into the given rectangle. If the PropertyEditor doesn't honor paint requests (see isPaintable) this method should be a silent noop. The given Graphics object will have the default font, color, etc of the parent container. The PropertyEditor may change graphics attributes such as font and color and doesn't need to restore the old values. param gfx Graphics object to paint into. param box Rectangle within graphics object into which we should paint.
public void	removePropertyChangeListener(java.beans.PropertyChangeListener listener) Remove a listener for the PropertyChange event. param listener The PropertyChange listener to be removed.
public void	setAsText(java.lang.String text) Set the property value by parsing a given String. May raise java.lang.IllegalArgumentException if either the String is badly formatted or if this kind of property can't be expressed as text. param text The string to be parsed.
public void	setValue(java.lang.Object value) Set (or change) the object that is to be edited. Primitive types such as "int" must be wrapped as the corresponding object type such as "java.lang.Integer". param value The new target object to be edited. Note that this object should not be modified by the PropertyEditor, rather the PropertyEditor should create a new object to hold any modified value.
public boolean	supportsCustomEditor() Determines whether this property editor supports a custom editor. return True if the propertyEditor can provide a custom editor.