org.eclipse.swt.widgets
Class Synchronizer

java.lang.Object
  org.eclipse.swt.widgets.Synchronizer

Direct Known Subclasses:

ClusteredSynchronizer

public class Synchronizer
extends java.lang.Object

Instances of this class provide synchronization support for displays. A default instance is created automatically for each display, and this instance is sufficient for almost all applications.

IMPORTANT: Typical application code never needs to deal with this class. It is provided only to allow applications which require non-standard synchronization behavior to plug in the support they require. Subclasses which override the methods in this class must ensure that the superclass methods are invoked in their implementations

Since:

1.3

See Also:

Constructor Summary

Synchronizer(Display display)
Constructs a new instance of this class.

Method Summary

protected void	asyncExec(java.lang.Runnable runnable) Causes the run() method of the runnable to be invoked by the user-interface thread at the next reasonable opportunity.
protected void	runnableAdded(java.lang.Runnable runnable)
protected void	syncExec(java.lang.Runnable runnable) Causes the run() method of the runnable to be invoked by the user-interface thread at the next reasonable opportunity.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Synchronizer

public Synchronizer(Display display)

Constructs a new instance of this class.

Parameters:

display - the display to create the synchronizer on

Method Detail

runnableAdded

protected void runnableAdded(java.lang.Runnable runnable)

asyncExec

protected void asyncExec(java.lang.Runnable runnable)

Causes the run() method of the runnable to be invoked by the user-interface thread at the next reasonable opportunity. The caller of this method continues to run in parallel, and is not notified when the runnable has completed.

Parameters:

runnable - code to run on the user-interface thread.

See Also:

syncExec(java.lang.Runnable)

syncExec

protected void syncExec(java.lang.Runnable runnable)

Causes the run() method of the runnable to be invoked by the user-interface thread at the next reasonable opportunity. The thread which calls this method is suspended until the runnable completes.

Parameters:

runnable - code to run on the user-interface thread.

Throws:

SWTException -

• ERROR_FAILED_EXEC - if an exception occurred when executing the runnable

See Also:

asyncExec(java.lang.Runnable)