HandleObjectManager (Eclipse Platform API Specification)

java.lang.Object
- org.eclipse.core.commands.common.EventManager
- - org.eclipse.core.commands.common.HandleObjectManager

Direct Known Subclasses:

BindingManager, CommandManager, ContextManager
```
public abstract class HandleObjectManager
extends EventManager
```
A manager of HandleObject instances. This has some common behaviour which is shared between all such managers.

Clients may extend.

Since:

3.2

Field Summary

Fields
Modifier and Type	Field	Description
`protected Set`	`definedHandleObjects`	The set of handle objects that are defined.
`protected Map`	`handleObjectsById`	The map of identifiers (`String`) to handle objects ( `HandleObject`).

Constructor Summary

Constructors
Constructor Description

HandleObjectManager()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`checkId(String id)`	Verifies that the identifier is valid.
`protected Set`	`getDefinedHandleObjectIds()`	Returns the set of identifiers for those handle objects that are defined.

Methods inherited from class org.eclipse.core.commands.common.EventManager
addListenerObject, clearListeners, getListeners, isListenerAttached, removeListenerObject

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - definedHandleObjects
```
protected final Set definedHandleObjects
```
    The set of handle objects that are defined. This value may be empty, but it is never null.
  - handleObjectsById
```
protected final Map handleObjectsById
```
    The map of identifiers (String) to handle objects ( HandleObject). This collection may be empty, but it is never null.
- Constructor Detail
  - HandleObjectManager
```
public HandleObjectManager()
```
- Method Detail
  - checkId
```
protected final void checkId(String id)
```
    Verifies that the identifier is valid. Exceptions will be thrown if the identifier is invalid in some way.
    
    Parameters:
    
    id - The identifier to validate; may be anything.
  - getDefinedHandleObjectIds
```
protected final Set getDefinedHandleObjectIds()
```
    Returns the set of identifiers for those handle objects that are defined.
    
    Returns:
    
    The set of defined handle object identifiers; this value may be empty, but it is never null.