# Package org.eclipse.ui.handlers

package org.eclipse.ui.handlers

Provides support for integrating handlers into the Eclipse workbench.

## Package Specification

This package provides the classes required to integrate handlers into the Eclipse workbench.

To use the handler integration, the method `getAdapter` is called on the Eclipse workbench, with the argument `IHandlerService.class`. This will return an instance of `IHandlerService`.

Related Packages
Package
Description
org.eclipse.ui
Application programming interfaces for interaction with and extension of the Eclipse Platform User Interface.
Class
Description
CollapseAllHandler
Collapse a tree viewer.
ExpandAllHandler
Expand a tree viewer.
HandlerUtil
Some common utilities for working with handlers in Platform UI.
IHandlerActivation
A token representing the activation of a handler.
IHandlerService
Provides services related to activating and deactivating handlers within the workbench.
RadioState
This state supports a radio-button like command, where the value of the parameterized command is stored as state.
RegistryRadioState
A radio state that can be read from the registry.
RegistryToggleState
A toggle state that can be read from the registry.
ShowPerspectiveHandler
Shows the given perspective.
ShowViewHandler
Shows the given view.