Java 类org.eclipse.ui.actions.RefreshAction 实例源码

protected void makeActions() {
    IShellProvider shellProvider = new IShellProvider() {

        @Override
        public Shell getShell() {
            return shell;
        }
    };

    refreshAction = new RefreshAction(shellProvider) {
        @Override
        public void run() {
            final IStatus[] errorStatus = new IStatus[1];
            errorStatus[0] = Status.OK_STATUS;
            final WorkspaceModifyOperation op = (WorkspaceModifyOperation) createOperation(errorStatus);
            WorkspaceJob job = new WorkspaceJob("refesh") {
                @Override
                public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
                    try {
                        op.run(monitor);
                        if (shell != null && !shell.isDisposed()) {
                            shell.getDisplay().asyncExec(new Runnable() {

                                @Override
                                public void run() {
                                    StructuredViewer viewer = getActionSite().getStructuredViewer();
                                    if (viewer != null && viewer.getControl() != null && !viewer.getControl()
                                            .isDisposed()) {
                                        viewer.refresh();
                                    }

                                }
                            });
                        }
                    } catch (InvocationTargetException e) {
                        String msg = NLS.bind("Exception in {0}. run: {1}", getClass().getName(),
                                e.getTargetException());
                        throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, 
                                IStatus.ERROR, msg, e.getTargetException()));
                    } catch (InterruptedException ex) {
                        return Status.CANCEL_STATUS;
                    }
                    return errorStatus[0];
                }
            };
            ISchedulingRule rule = op.getRule();
            if (rule != null) {
                job.setRule(rule);
            }
            job.setUser(true);
            job.schedule();
        }
    };
    refreshAction.setDisabledImageDescriptor(getImageDescriptor("icons/refresh_nav_disabled.gif"));
       refreshAction.setImageDescriptor(getImageDescriptor("icons/refresh_nav_enabled.gif"));
       refreshAction.setActionDefinitionId(IWorkbenchCommandConstants.FILE_REFRESH);
}