Package org.eclipse.ui.activities
Interface ITriggerPointAdvisor
- All Known Implementing Classes:
WorkbenchTriggerPointAdvisor
public interface ITriggerPointAdvisor
The trigger point advisor is a mechanism provided by the workbench that is
consulted whenever code that is considered a trigger point is hit. It is the
role of the advisor to determine what, if any, activities should be enabled
as a consequence of this action. The advisor also has the option of vetoing
the operation.
- Since:
- 3.1
- See Also:
- Restriction:
- This interface is not intended to be implemented by clients.
- Restriction:
- This interface is not intended to be extended by clients.
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Method Summary
Modifier and TypeMethodDescriptionallow
(ITriggerPoint triggerPoint, IIdentifier identifier) Answer whether the activities bound to the identifier should be enabled when triggered by the provided trigger point.boolean
computeEnablement
(IActivityManager activityManager, IIdentifier identifier) Calculate the identifier's enabled state for a combination of activities with and without enabled when core expressions.
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Method Details
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allow
Answer whether the activities bound to the identifier should be enabled when triggered by the provided trigger point.- Parameters:
triggerPoint
- the trigger point to testidentifier
- the identifier to test against the trigger point- Returns:
- the set of activities that should be enabled if this the contribution
represented by this identifier is to be used. If this is not
null
, the caller can proceed with usage of the contribution provided that the collection of activities is enabled. If this isnull
, the caller should assume that the operation involving the contribution should be aborted. If this method returns the empty set then the operation can proceed without any changes to activity enablement state. Please note that it is the callers responsibility to ensure that the Set returned by this method is actually enabled - after setting the enabled state of the required activities the change should be verified by consultingIActivityManager.getEnabledActivityIds()
.
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computeEnablement
Calculate the identifier's enabled state for a combination of activities with and without enabled when core expressions.- Parameters:
activityManager
- the activity manageridentifier
- the identifier to update- Returns:
true
if this identifier should be enabled,false
otherwise- Since:
- 3.4
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