Why aren't my Resources being refreshed in my Eclipse plugin?

I have a custom Eclipse plugin I am working on. It has a CustomerExplorer View(Part) that effectively replaces the 'Project Explorer' and it has a number of MultiPageEditorParts, each has a XML editor and a Form editor, b开发者_StackOverflow社区oth modifying the same configuration file. The XML editor is a TextEditor. The form and the XML are linked and each updates the other whenever there is a pageChange().

My problem lies in the external modification of files opened in my Eclipse plugin. If I edit a file in an external editor and then load it (from CustomerExplorer View), upon switching to the XML tab I will recieve the message:

"Resource is out of sync with the file system: '/example/example.xml'.

Press 'F5' or select File > Refresh to refresh the file.

I am familiar with this error from using Eclipse and usually simply pushing F5, right clicking the file in question and choosing refresh or choosing File > Refresh from the menu bar usually solves it. However, in this case F5 does nothing, File > Refresh is greyed out and right clicking on the file (in my custom view), the context menu does not contain 'refresh'. I have tried opening the 'Project Explorer' view, where 'Refresh' is available in the context menu, but this does nothing.

From reading around I have been led to understand that these resources should be refreshed by eclipse but they are not. Any pointers as to why?

Hard to say exactly what is happening here, but you may need to explicitly add the action set for refreshing resources to your custom view.

Another way of solving your issue might be to track change to the file an update your view when there is one:

ResourcesPlugin.getWorkspace().addResourceChangeListener(new MyResourceTracker(), IResourceChangeEvent.POST_CHANGE);

With something like that:

public class MyResourceTrackerimplements IResourceChangeListener {
    @Override
    public void resourceChanged(final IResourceChangeEvent ev) {
        if (ev.getDelta() != null) {
            try {
                ev.getDelta().accept(new IResourceDeltaVisitor() {
                    @Override
                    public boolean visit(final IResourceDelta delta)
                            throws CoreException {
                        // TODO do something
                        return true;
                    }
                });
            } catch (CoreException e) {
                // TODO
            }
        }
    }
}