How do I make a checkable action that represents a preference option?
Here an example for a checkable action which represents the state of the "ignoreCase" property within the property file "org/netbeans/modules/diff.properties"
<folder name="Actions">
<folder name="Diff">
<file name="toggle-ignore-case-diff-option.instance">
<attr bundlevalue="org.netbeans.modules.diff.Bundle#CTL_IgnoreCaseOptionAction" name="displayName"/>
<attr name="Name" stringvalue="toggle-ignore-case-diff-option"/>
<attr name="preferencesNode" stringvalue="/org/netbeans/modules/diff" />
<attr name="preferencesKey" stringvalue="ignoreCase"/>
<attr name="instanceCreate" methodvalue="org.openide.awt.Actions.checkbox"/>
</file>
</folder>
</folder>