javaeclipseswtemfacceleo

Eclipse: Getting null display

I am trying to pop up a dialog (i.e. a FileDialog) in an Eclipse Plugin, actually before of an Acceleo transformation I am running through the related UI Launcher project (http://lowcoupling.com/post/51877317162/the-acceleo-ui-launcher-project)

I am trying to do this in the related doGenerate method...

public void doGenerate(IProgressMonitor monitor) throws IOException {

    Display display = Display.getCurrent();
    System.out.println(display);
    //....

but the display I get is null How should I do that?

Solution

  • The documentation of IWorkbench#getDisplay() states:

    Code should always ask the workbench for the display rather than rely on Display.getDefault().

    So use:

    PlatformUI.getWorkbench().getDisplay()

    instead.