Package org.eclipse.swt.widgets

Class 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:
    Display.setSynchronizer(org.eclipse.swt.widgets.Synchronizer)

    • Constructor Summary

      Constructors 
      Constructor Description
      Synchronizer​(Display display)
      Constructs a new instance of this class.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      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)