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Java Source Code / Java Documentation » IDE Eclipse » ui workbench » org.eclipse.ui.internal.services

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.eclipse.ui.internal.services .SourcePriorityNameMapping

SourcePriorityNameMapping

final public class SourcePriorityNameMapping implements ISources(Code)

A static class linking the names of variables in an IEvaluationContext to the priority they should be given when doing conflict resolution.

In the future, it will possible to define a new variable (i.e., piece of application state) that you want to use inside of the org.eclipse.ui.contexts, org.eclipse.ui.handlers or org.eclipse.ui.menus extension points. As it stands right now, it is not possible to run code soon enough for the IHandlerService, IMenuService or IContextService to become aware of the new variables. This will likely be fixed with a new extension point.

TODO Move to "org.eclipse.ui" and resolve the above issue.

since:
   3.2
See Also:   org.eclipse.ui.ISources
See Also:   org.eclipse.ui.contexts.IContextService
See Also:   org.eclipse.ui.handlers.IHandlerService
See Also:   org.eclipse.ui.menus.IMenuService

Field Summary
final public static String	LEGACY_LEGACY_NAME The variable name to use when boosting priority on an activation.
final public static int	NO_SOURCE_PRIORITY

Method Summary
final public static void	addMapping(String sourceName, int sourcePriority) Adds a mapping between a source name and a source priority.
final public static int	computeSourcePriority(Expression expression) Computes the source priority for the given expression.
final public static int	getMapping(String sourceName) Gets the priority for the source with the given name. Parameters: sourceName - The name of the variable as it would appear in an XMLexpression; should not be `null`.

Field Detail

LEGACY_LEGACY_NAME
final public static String LEGACY_LEGACY_NAME(Code)
	The variable name to use when boosting priority on an activation.

NO_SOURCE_PRIORITY
final public static int NO_SOURCE_PRIORITY(Code)
	The value returned if there is source priority for the given name See Also: SourcePriorityNameMapping.getMapping(String)

Method Detail

addMapping
final public static void addMapping(String sourceName, int sourcePriority)(Code)
	Adds a mapping between a source name and a source priority. This method also cleans up any existing mappings using the same name or priority. There is a one-to-one relationship between name and priority. Parameters: sourceName - The name of the variable as it would appear in an XMLexpression; must not be `null`. Parameters: sourcePriority - The priority of the source with respect to other sources. Ahigher value means that expressions including this prioritywill win ties more often. It is recommended that this value issimply a single bit shifted to a particular place. See Also: ISources

computeSourcePriority
final public static int computeSourcePriority(Expression expression)(Code)
	Computes the source priority for the given expression. The source priority is a bit mask of all of the variables references by the expression. The default variable is considered to be ISources.ACTIVE_CURRENT_SELECTION . The source priority is used to minimize recomputations of the expression, and it can also be used for conflict resolution. Parameters: expression - The expression for which the source priority should becomputed; may be `null`. The bit mask of all the sources required for this expression;`0` if none.

getMapping
final public static int getMapping(String sourceName)(Code)
	Gets the priority for the source with the given name. Parameters: sourceName - The name of the variable as it would appear in an XMLexpression; should not be `null`. The source priority that matches, if any;`NO_SOURCE_PRIORITY` if none is found.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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