public interface Controller
View
has an associated Controller
.
Controllers receive requests to handle the commands associated with user
actions.
The controller's handleEvent
method gets called
with the appropriate Command
specified. If the
Controller
does not handle the requested command it delegates
the Command
to a supervising Controller
.
Controllers are also responsible for determining the availability of a
specific command. The update
method is called to do just that.
If you register a trigger action, you may want to implement a
TriggerController
in place of Controller if you cannot ensure your
action should be available with declarative rules.
Command
,
IdeAction
,
View
,
TriggerController
Modifier and Type | Field and Description |
---|---|
static int |
UPDATE_FROM_ACTION_PERFORMED |
static int |
UPDATE_FROM_ACTIVE_VIEW_CHANGED |
static int |
UPDATE_FROM_UNDO |
static int |
UPDATE_FROM_USER_EXTENSION |
static int |
UPDATE_FROM_VIEW_SELECTION_CHANGED |
Modifier and Type | Method and Description |
---|---|
boolean |
handleEvent(IdeAction action,
Context context)
This method is called when a user interaction with a
View
triggers the execution of a command. |
boolean |
update(IdeAction action,
Context context)
This method updates the enabled status of the specified action within the
specified context.
|
static final int UPDATE_FROM_USER_EXTENSION
static final int UPDATE_FROM_ACTIVE_VIEW_CHANGED
static final int UPDATE_FROM_VIEW_SELECTION_CHANGED
static final int UPDATE_FROM_ACTION_PERFORMED
static final int UPDATE_FROM_UNDO
boolean handleEvent(IdeAction action, Context context)
View
triggers the execution of a command.action
- action whose command is to be executed.boolean update(IdeAction action, Context context)
action
- action whose command is to be executed.context
- the current context