| org.eclipse.ui.internal.services.IEvaluationResultCache
All known Subclasses: org.eclipse.ui.internal.services.EvaluationResultCache,
| IEvaluationResultCache | | public interface IEvaluationResultCache (Code) | |
A cache of the result of an expression. This also provides the source
priority for the expression.
This interface is not intended to be implemented or extended by clients.
since:
3.2
See Also: org.eclipse.ui.ISources
See Also: org.eclipse.ui.ISourceProvider |
| Method Summary | |
| public void | clearResult()
Clears the cached computation of the evaluate method, if
any. | | public boolean | evaluate(IEvaluationContext context)
Evaluates the expression -- given the current state of the workbench.
This method should cache its computation. | | public Expression | getExpression()
Returns the expression controlling the activation or visibility of this
item. | | public int | getSourcePriority()
Returns the priority that has been given to this expression. | | public void | setResult(boolean result)
Forces the cached result to be a particular value. |
| clearResult | | public void clearResult()(Code) | | Clears the cached computation of the evaluate method, if
any. This method is only intended for internal use. It provides a
mechanism by which ISourceProvider events can invalidate
state on a IEvaluationResultCache instance.
|
| evaluate | | public boolean evaluate(IEvaluationContext context)(Code) | | Evaluates the expression -- given the current state of the workbench.
This method should cache its computation. The cache will be cleared by a
call to clearResult.
Parameters:
context - The context in which this state should be evaluated; must notbe null. true if the expression currently evaluates totrue; false otherwise. |
| getExpression | | public Expression getExpression()(Code) | | Returns the expression controlling the activation or visibility of this
item.
The expression associated with this item; may benull. |
| getSourcePriority | | public int getSourcePriority()(Code) | | Returns the priority that has been given to this expression.
The priority.
See Also: ISources |
| setResult | | public void setResult(boolean result)(Code) | | Forces the cached result to be a particular value. This will not
notify any users of the cache that it has changed.
Parameters:
result - The cached result to use.
since:
3.3 |
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