Apache NetBeansHow do I show that a user has filled an invalid input into my wizard?
Set the WizardPanel_errorMessage property in the WizardPanel instance that is related to the displayed panel.
Example:
wizardDescriptor.putProperty("WizardPanel_errorMessage", NbBundle.getMessage(MyPanel1.class, "key"));
Note: Since WizardDescritor, spec.version 7.8 (i.e.since NetBeans 6.5 Platform)
-
you can use
WizardDescriptor.PROP_ERROR_MESSAGEinstead of "WizardPanel_errorMessage". -
beside
WizardDescriptor.PROP_ERROR_MESSAGEyou can also useWizardDescriptor.PROP_WARNING_MESSAGEfor warning messages orWizardDescriptor.PROP_INFO_MESSAGEfor information messages. -
All kind of messages will be badged with appropriate icons: error
, warning 
, info 
-
To clean the message just call
wizardDescriptor.putProperty(WizardDescriptor.PROP_ERROR_MESSAGE, null);
You can obtain the instance of WizardDescriptor in the WizardDescriptor.Panel.readSettings as settings parameter method.
Update in NetBeans 6.8
Two new methods in NotifyDescriptor were added to allow API client to create NotificationLineSupport which allow handling error/warning/info messages in dialogs. If a dialog descriptor creates this support, DialogDisplayer allocates necessary space at the bottom of dialog where API clients can set info/warning/error messages with appropriate icons.
