netbeans.apache.org/src/content/wiki/DevFaqGraphicalChoiceView.asciidoc

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= DevFaqGraphicalChoiceView
:jbake-type: wiki
:jbake-tags: wiki, devfaq, needsreview
:jbake-status: published
:keywords: Apache NetBeans wiki DevFaqGraphicalChoiceView
:description: Apache NetBeans wiki DevFaqGraphicalChoiceView
:toc: left
:toc-title:
:syntax: true

== How can I graphically create a ChoiceView in using the GUI designer?

It is possible to use a ChoiceView graphically during the design of your interface in the Form Editor. As ChoiceView extends JComboBox, you can design the interface with the help of a JComboBox which is the placeholder for your ChoiceView and customize the creation code of the combo to instantiate a ChoiceView instead. 

Simply choose "Combo Box" from the "Swing Controls" palette and drop it onto your interface. Then select the combo and select the "Code" tab in the properties window. In the "custom creation code" field type: "new ChoiceView()". Then return to the "Properties" tab an clear the "model" field. This step is absolutely mandatory otherwise it won't work: by default the Form Editor creates a dummy model for you. It is forbidden to set a model on a ChoiceView. If you do anyway you will get errors like:

[source,java]
----

java.lang.ClassCastException: java.lang.String cannot be cast to org.openide.explorer.view.VisualizerNode 
        at org.openide.explorer.view.NodeRenderer.findVisualizerNode(NodeRenderer.java:232) 
        at org.openide.explorer.view.NodeRenderer.getListCellRendererComponent(NodeRenderer.java:152) 
        at javax.swing.plaf.basic.BasicComboBoxUI.paintCurrentValue(BasicComboBoxUI.java:1202) 
        at com.sun.java.swing.plaf.windows.WindowsComboBoxUI.paintCurrentValue(WindowsComboBoxUI.java:293) 
        at javax.swing.plaf.basic.BasicComboBoxUI.paint(BasicComboBoxUI.java:888) 
        at com.sun.java.swing.plaf.windows.WindowsComboBoxUI.paint(WindowsComboBoxUI.java:199) 
        at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143) 
        at javax.swing.JComponent.paintComponent(JComponent.java:763) 
        at javax.swing.JComponent.paint(JComponent.java:1029) 
        at javax.swing.JComponent.paintChildren(JComponent.java:864) 
        at javax.swing.JComponent.paint(JComponent.java:1038) 
        at javax.swing.JComponent.paintChildren(JComponent.java:864) 
        at javax.swing.JComponent.paint(JComponent.java:1038) 
   ...
----

Finally switch to the "Source" view and fix the import errors.
--link:User:Tboudreau.asciidoc[Tboudreau] 02:40, 24 January 2010 (UTC)

=== Apache Migration Information

The content in this page was kindly donated by Oracle Corp. to the
Apache Software Foundation.

This page was exported from link:http://wiki.netbeans.org/DevFaqGraphicalChoiceView[http://wiki.netbeans.org/DevFaqGraphicalChoiceView] , 
that was last modified by NetBeans user Tboudreau 
on 2010-01-24T02:40:27Z.


*NOTE:* This document was automatically converted to the AsciiDoc format on 2018-02-07, and needs to be reviewed.