com.webobjects.eointerface.swing
Class EOSwingImageViewPlugin

java.lang.Object
  com.webobjects.eointerface.EOWidgetAssociation.WidgetPlugin
      com.webobjects.eointerface.EOValueAssociation.ValuePlugin
          com.webobjects.eointerface.swing.EOSwingImageViewPlugin

All Implemented Interfaces:

NSDisposable

public class EOSwingImageViewPlugin
extends EOValueAssociation.ValuePlugin

EOSwingImageViewPlugin is a concrete subclass of EOValueAssociation.ValuePlugin that displays NSData as an java.awt.Image in an EOImageView.

Associations classes: EOValueAssociation

Widgets classes: EOImageView

Nested Class Summary

Nested classes/interfaces inherited from class com.webobjects.eointerface.EOWidgetAssociation.WidgetPlugin

EOWidgetAssociation.WidgetPlugin.Formatting

Constructor Summary

EOSwingImageViewPlugin(EOWidgetAssociation association, Object widget)
Creates a new EOSwingImageViewPlugin connected to an association and a UI widget.

Method Summary

void	breakConnection() Clean up (end) the plugin's connection to its widget.
void	establishConnection() Establishes a connection between the plugin and its UI widget.
protected Image	imageFromData(NSData data) Converts the NSData object into an java.awt.Image, using Toolkit.createImage.
void	setValue(Object value, boolean isEnabled) Set NSData object to be used for the image, and set the enabled state of the view.
Object	value() Returns the data object used to create the plugin view's image.

Methods inherited from class com.webobjects.eointerface.EOValueAssociation.ValuePlugin

endEditing, useURLAsValue

Methods inherited from class com.webobjects.eointerface.EOWidgetAssociation.WidgetPlugin

association, dispose, unacceptableAspects, widget, widgetKeysTaken

Methods inherited from class java.lang.Object

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

Constructor Detail

EOSwingImageViewPlugin

public EOSwingImageViewPlugin(EOWidgetAssociation association,
                              Object widget)

Creates a new EOSwingImageViewPlugin connected to an association and a UI widget.

Parameters:

association - EOValueAssociation object for the plugin to use

widget - EOImageView that the plugin will manage

Method Detail

establishConnection

public void establishConnection()

Establishes a connection between the plugin and its UI widget. In this case, however, it just re-initializes the data.

Overrides:

establishConnection in class EOWidgetAssociation.WidgetPlugin

breakConnection

public void breakConnection()

Clean up (end) the plugin's connection to its widget. In this case, however, it just re-initializes the data.

Overrides:

breakConnection in class EOWidgetAssociation.WidgetPlugin

imageFromData

protected Image imageFromData(NSData data)

Converts the NSData object into an java.awt.Image, using Toolkit.createImage.

Override this method for custom behaviour.

Parameters:

data - the NSData object to be used as an image (usually coming from the association)

Returns:

an object of class java.awt.Image or subclass

setValue

public void setValue(Object value,
                     boolean isEnabled)

Set NSData object to be used for the image, and set the enabled state of the view.

Specified by:

setValue in class EOValueAssociation.ValuePlugin

Parameters:

value - NSData object to be used as an image; its bytes will be converted to an java.awt.Image with the method imageFromData

isEnabled - Boolean indicating wether to set the enabled state for the view; currently not used for EOImageView

value

public Object value()

Returns the data object used to create the plugin view's image.

Specified by:

value in class EOValueAssociation.ValuePlugin

Returns:

an Object of class NSData (or subclass)