com.vaadin.event
Class ActionManager

java.lang.Object
  com.vaadin.event.ActionManager

All Implemented Interfaces:

Action.Container, Action.Handler, Action.Notifier, Serializable

public class ActionManager
extends Object
implements Action.Container, Action.Handler, Action.Notifier

Javadoc TODO Notes:

Empties the keymapper for each repaint to avoid leaks; can cause problems in the future if the client assumes key don't change. (if lazyloading, one must not cache results)

See Also:

Serialized Form

Field Summary

protected HashSet<Action.Handler>	actionHandlers List of action handlers
protected KeyMapper<Action>	actionMapper Action mapper
protected HashSet<Action>	ownActions List of action handlers
protected Component	viewer

Constructor Summary

ActionManager()

ActionManager(T viewer)

Method Summary

<T extends Action & Action.Listener> void	addAction(T action)
void	addActionHandler(Action.Handler actionHandler) Registers a new action handler for this container
Action[]	getActions(Object target, Object sender) Gets the list of actions applicable to this handler.
void	handleAction(Action action, Object sender, Object target) Handles an action for the given target.
void	handleActions(Map<String,Object> variables, Action.Container sender)
void	paintActions(Object actionTarget, PaintTarget paintTarget)
<T extends Action & Action.Listener> void	removeAction(T action)
void	removeActionHandler(Action.Handler actionHandler) Removes a previously registered action handler for the contents of this container.
void	removeAllActionHandlers()
<T extends Component & Action.Container & VariableOwner> void	setViewer(T viewer)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ownActions

protected HashSet<Action> ownActions

List of action handlers

actionHandlers

protected HashSet<Action.Handler> actionHandlers

List of action handlers

actionMapper

protected KeyMapper<Action> actionMapper

Action mapper

viewer

protected Component viewer

Constructor Detail

ActionManager

public ActionManager()

ActionManager

public ActionManager(T viewer)

Method Detail

setViewer

public <T extends Component & Action.Container & VariableOwner> void setViewer(T viewer)

addAction

public <T extends Action & Action.Listener> void addAction(T action)

Specified by:

addAction in interface Action.Notifier

removeAction

public <T extends Action & Action.Listener> void removeAction(T action)

Specified by:

removeAction in interface Action.Notifier

addActionHandler

public void addActionHandler(Action.Handler actionHandler)

Description copied from interface: Action.Container

Registers a new action handler for this container

Specified by:

addActionHandler in interface Action.Container

Parameters:

actionHandler - the new handler to be added.

removeActionHandler

public void removeActionHandler(Action.Handler actionHandler)

Description copied from interface: Action.Container

Removes a previously registered action handler for the contents of this container.

Specified by:

removeActionHandler in interface Action.Container

Parameters:

actionHandler - the handler to be removed.

removeAllActionHandlers

public void removeAllActionHandlers()

paintActions

public void paintActions(Object actionTarget,
                         PaintTarget paintTarget)
                  throws PaintException

Throws:

PaintException

handleActions

public void handleActions(Map<String,Object> variables,
                          Action.Container sender)

getActions

public Action[] getActions(Object target,
                           Object sender)

Description copied from interface: Action.Handler

Gets the list of actions applicable to this handler.

Specified by:

getActions in interface Action.Handler

Parameters:

target - the target handler to list actions for. For item containers this is the item id.

sender - the party that would be sending the actions. Most of this is the action container.

Returns:

the list of Action

handleAction

public void handleAction(Action action,
                         Object sender,
                         Object target)

Description copied from interface: Action.Handler

Handles an action for the given target. The handler method may just discard the action if it's not suitable.

Specified by:

handleAction in interface Action.Handler

Parameters:

action - the action to be handled.

sender - the sender of the action. This is most often the action container.

target - the target of the action. For item containers this is the item id.