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A category is a grouping of commands by functional area. For example, in the
Eclipse workbench, "Text Editing" is a category containing various commands
related to text editing. A category's primary functionality is to control the
display of commands to the user. When appropriate, commands displayed to the
user (e.g., keys preference page) will be grouped by category.
An instance of ICategory is a handle representing a category
as defined by the extension point org.eclipse.ui.commands.
The identifier of the handle is identifier of the category being represented.
An instance of ICategory can be obtained from an instance of
ICommandManager for any identifier, whether or not a category
with that identifier defined in the plugin registry.
The handle-based nature of this API allows it to work well with runtime
plugin activation and deactivation, which causes dynamic changes to the
plugin registry, and therefore, potentially, dynamic changes to the set of
category definitions.
This interface is not intended to be extended or implemented by clients.
since:
3.0
See Also: ICategoryListener
See Also: ICommandManager
See Also: org.eclipse.core.commands.Category |