org.eclipse.swt.widgets
Class Synchronizer

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

public class Synchronizer

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

asyncExec

protected void asyncExec(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(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)