java.lang.Object
- java.beans.PropertyEditorSupport

All Implemented Interfaces:

PropertyEditor
```
public class PropertyEditorSupport
extends Object
implements PropertyEditor
```
This is a support class to help build property editors.
It can be used either as a base class or as a delagatee.

Constructor Summary

Constructors
Constructor and Description

PropertyEditorSupport()
Constructs a PropertyEditorSupport object.

PropertyEditorSupport(Object source)
Constructs a PropertyEditorSupport object.

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Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addPropertyChangeListener(PropertyChangeListener listener)` Adds a listener for the value change.
`void`	`firePropertyChange()` Report that we have been modified to any interested listeners.
`String`	`getAsText()` Gets the property value as a string suitable for presentation to a human to edit.
`Component`	`getCustomEditor()` A PropertyEditor may chose to make available a full custom Component that edits its property value.
`String`	`getJavaInitializationString()` This method is intended for use when generating Java code to set the value of the property.
`Object`	`getSource()` Returns the bean that is used as the source of events.
`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 tag values.
`Object`	`getValue()` Gets the value of the property.
`boolean`	`isPaintable()` Determines whether the class will honor the paintValue method.
`void`	`paintValue(Graphics gfx, Rectangle box)` Paint a representation of the value into a given area of screen real estate.
`void`	`removePropertyChangeListener(PropertyChangeListener listener)` Removes a listener for the value change.
`void`	`setAsText(String text)` Sets the property value by parsing a given String.
`void`	`setSource(Object source)` Sets the source bean.
`void`	`setValue(Object value)` Set (or change) the object that is to be edited.
`boolean`	`supportsCustomEditor()` Determines whether the propertyEditor can provide a custom editor.

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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PropertyEditorSupport
```
public PropertyEditorSupport()
```
    Constructs a PropertyEditorSupport object.
    
    Since:
    
    1.5
  - PropertyEditorSupport
```
public PropertyEditorSupport(Object source)
```
    Constructs a PropertyEditorSupport object.
    
    Parameters:
    source - the source used for event firing
    Since:
    
    1.5
- Method Detail
  - getSource
```
public Object getSource()
```
    Returns the bean that is used as the source of events. If the source has not been explicitly set then this instance of PropertyEditorSupport is returned.
    
    Returns:
    the source object or this instance
    Since:
    
    1.5
  - setSource
```
public void setSource(Object source)
```
    Sets the source bean.
    The source bean is used as the source of events for the property changes. This source should be used for information purposes only and should not be modified by the PropertyEditor.
    
    Parameters:
    source - source object to be used for events
    Since:
    
    1.5
  - setValue
```
public void setValue(Object value)
```
    Set (or change) the object that is to be edited.
    
    Specified by:
    
    setValue in interface PropertyEditor
    
    Parameters:
    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.
  - getValue
```
public Object getValue()
```
    Gets the value of the property.
    
    Specified by:
    
    getValue in interface PropertyEditor
    
    Returns:
    The value of the property.
  - isPaintable
```
public boolean isPaintable()
```
    Determines whether the class will honor the paintValue method.
    
    Specified by:
    
    isPaintable in interface PropertyEditor
    
    Returns:
    True if the class will honor the paintValue method.
  - paintValue
```
public void paintValue(Graphics gfx,
              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.
    
    Specified by:
    
    paintValue in interface PropertyEditor
    
    Parameters:
    gfx - Graphics object to paint into.
    box - Rectangle within graphics object into which we should paint.
  - getJavaInitializationString
```
public String getJavaInitializationString()
```
    This method is intended for use when generating Java code to set the value of the property. It should return a fragment of Java code that can be used to initialize a variable with the current property value.
    Example results are "2", "new Color(127,127,34)", "Color.orange", etc.
    
    Specified by:
    
    getJavaInitializationString in interface PropertyEditor
    
    Returns:
    A fragment of Java code representing an initializer for the current value.
  - getAsText
```
public String getAsText()
```
    Gets the property value as a string suitable for presentation to a human to edit.
    
    Specified by:
    
    getAsText in interface PropertyEditor
    
    Returns:
    The property value as a string suitable for presentation to a human to edit.
    Returns null if the value can't be expressed as a string.
    If a non-null value is returned, then the PropertyEditor should be prepared to parse that string back in setAsText().
  - setAsText
```
public void setAsText(String text)
               throws IllegalArgumentException
```
    Sets 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.
    
    Specified by:
    
    setAsText in interface PropertyEditor
    
    Parameters:
    text - The string to be parsed.
    
    Throws:
    
    IllegalArgumentException
  - getTags
```
public 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 tag values. 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.
    
    Specified by:
    
    getTags in interface PropertyEditor
    
    Returns:
    The tag values for this property. May be null if this property cannot be represented as a tagged value.
  - getCustomEditor
```
public Component getCustomEditor()
```
    A PropertyEditor may chose 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 ...
    
    Specified by:
    
    getCustomEditor in interface PropertyEditor
    
    Returns:
    A java.awt.Component that will allow a human to directly edit the current property value. May be null if this is not supported.
  - supportsCustomEditor
```
public boolean supportsCustomEditor()
```
    Determines whether the propertyEditor can provide a custom editor.
    
    Specified by:
    
    supportsCustomEditor in interface PropertyEditor
    
    Returns:
    True if the propertyEditor can provide a custom editor.
  - addPropertyChangeListener
```
public void addPropertyChangeListener(PropertyChangeListener listener)
```
    Adds a listener for the value change. When the property editor changes its value it should fire a PropertyChangeEvent on all registered PropertyChangeListeners, specifying the null value for the property name. If the source property is set, it should be used as the source of the event.
    The same listener object may be added more than once, and will be called as many times as it is added. If listener is null, no exception is thrown and no action is taken.
    
    Specified by:
    
    addPropertyChangeListener in interface PropertyEditor
    
    Parameters:
    listener - the PropertyChangeListener to add
  - removePropertyChangeListener
```
public void removePropertyChangeListener(PropertyChangeListener listener)
```
    Removes a listener for the value change.
    If the same listener was added more than once, it will be notified one less time after being removed. If listener is null, or was never added, no exception is thrown and no action is taken.
    
    Specified by:
    
    removePropertyChangeListener in interface PropertyEditor
    
    Parameters:
    listener - the PropertyChangeListener to remove
  - firePropertyChange
```
public void firePropertyChange()
```
    Report that we have been modified to any interested listeners.

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Vielen Dank im Voraus.

Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-java/beans/propertyeditorsupport.html

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Referenzen

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Constructors
Constructor and Description
`PropertyEditorSupport()` Constructs a `PropertyEditorSupport` object.
`PropertyEditorSupport(Object source)` Constructs a `PropertyEditorSupport` object.

Class PropertyEditorSupport

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

PropertyEditorSupport

PropertyEditorSupport

Method Detail

getSource

setSource

setValue

getValue

isPaintable

paintValue

getJavaInitializationString

getAsText

setAsText

getTags

getCustomEditor

supportsCustomEditor

addPropertyChangeListener

removePropertyChangeListener

firePropertyChange

Referenzen