DevFaqSwitchingMenusByContext
How can I change the contents of a menu according to the selected file in the editor?
- Create your action and let it implement Presenter.Menu
- Return a special JMenuItem subclass that implements DynamicMenuContent from getMenuPresenter()
- Implement DynamicMenuContent methods to return the desired menu content, using TopComponent.Registry for finding the selected file in the editor.
https://bitbucket.org/jglick/dynamicmenudemo/ also does something similar.
Can I hide or show a whole menu or toolbar?
To hide a menu or toolbar you have to edit your layer.xml and append _hidden to the name of the desired menu or toolbar. You may also hide *.instance files.
<folder name="Menu">
<!-- Hide View menu -->
<folder name="View_hidden"/>
<folder name="SomeMenu">
<!-- Hide a single menu item -->
<file name="SomeAction.instance_hidden"/>
</folder>
</folder>
<folder name="Toolbars">
<!-- Hide Edit toolbar -->
<folder name="Edit_hidden"/>
</folder>
<!-- Hide View menu -->
<folder name="View_hidden"/>
<folder name="SomeMenu">
<!-- Hide a single menu item -->
<file name="SomeAction.instance_hidden"/>
</folder>
</folder>
<folder name="Toolbars">
<!-- Hide Edit toolbar -->
<folder name="Edit_hidden"/>
</folder>
It's generally much easier to do this from the NetBeans IDE, as described here.
Note that to hide the Navigate menu one has to declare GoTo_hidden instead of Navigate_hidden (the menu was originally named GoTo, but was later renamed to Navigate by the means of Bundle.properties).
