public class PerformChangeOperation extends Object implements IWorkspaceRunnable
Change object. The operation
can be created in two different ways: with a given change or with a
CreateChangeOperation. If created the second way the given create
change operation will be used to create the actual change to perform.
If the change has been performed successfully (e.g. changeExecuted() returns
true) then the operation has called Change.dispose() as well
to clear-up internal state in the change object. If it hasn't been executed the
change, the change is still intact and the client is responsible to dispose the
change object.
If an undo change has been provided by the change to execute then the operation
calls Change.initializeValidationData(IProgressMonitor) to initialize the
undo change's validation data.
If an undo manager has been set via the method setUndoManager(IUndoManager, String)
then the undo object, if any has been provided, will be pushed onto the manager's
undo stack.
The operation should be executed via the run method offered by
IWorkspace to achieve proper delta batching.
Note: this class is not intended to be extended outside of the refactoring framework.
| Constructor and Description |
|---|
PerformChangeOperation(Change change)
Creates a new perform change operation instance for the given change.
|
PerformChangeOperation(CreateChangeOperation op)
Creates a new
PerformChangeOperation for the given CreateChangeOperation. |
| Modifier and Type | Method and Description |
|---|---|
boolean |
changeExecuted()
Returns
true if the change has been executed. |
boolean |
changeExecutionFailed()
Returns
true if the change execution failed. |
protected void |
executeChange(IProgressMonitor pm)
Actually executes the change.
|
Change |
getChange()
Returns the change used by this operation.
|
RefactoringStatus |
getConditionCheckingStatus()
Returns the status of the condition checking.
|
Change |
getUndoChange()
Returns the undo change of the change performed by this operation.
|
RefactoringStatus |
getValidationStatus()
Returns the refactoring status returned from the call
IChange#isValid(). |
void |
run(IProgressMonitor pm)
Runs the operation reporting progress to and accepting
cancellation requests from the given progress monitor.
|
void |
setUndoManager(IUndoManager manager,
String undoName)
Sets the undo manager.
|
public PerformChangeOperation(Change change)
change - the change to be applied to the workbenchpublic PerformChangeOperation(CreateChangeOperation op)
PerformChangeOperation for the given CreateChangeOperation. The create change operation is used to create
the actual change to execute.op - the CreateChangeOperation used to create the
actual change objectpublic boolean changeExecutionFailed()
true if the change execution failed.true if the change execution failed;
false otherwisepublic boolean changeExecuted()
true if the change has been executed. Otherwise
false is returned.true if the change has been executed, otherwise
falsepublic RefactoringStatus getConditionCheckingStatus()
null if
no condition checking has been requested.public Change getChange()
CreateChangeOperation.
Method returns null if the create operation did not create
a corresponding change or hasn't been executed yet.null if no change
has been createdpublic Change getUndoChange()
null if the change hasn't been performed yet or if the change
doesn't provide a undo.nullpublic RefactoringStatus getValidationStatus()
IChange#isValid().
Returns null if the change has not been executed.public void setUndoManager(IUndoManager manager, String undoName)
manager - the undo manager to use or null if no
undo recording is desiredundoName - the name used to present the undo change on the undo
stack. Must be a human-readable string. Must not be null
if manager is unequal nullpublic void run(IProgressMonitor pm) throws CoreException
Implementors of this method should check the progress monitor
for cancellation when it is safe and appropriate to do so. The cancellation
request should be propagated to the caller by throwing
OperationCanceledException.
run in interface IWorkspaceRunnablepm - a progress monitor, or null if progress
reporting and cancellation are not desiredCoreException - if this operation fails.protected void executeChange(IProgressMonitor pm) throws CoreException
pm - a progress monitor to report progressCoreException - if an unexpected error occurs during
change executionGuidelines for using Eclipse APIs. Copyright (c) IBM Corp. and others 2000, 2006. All rights reserved.