StudyAddHandler.java

package edu.ualberta.med.biobank.handlers;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.Assert;

import edu.ualberta.med.biobank.SessionManager;
import edu.ualberta.med.biobank.common.permission.study.StudyCreatePermission;
import edu.ualberta.med.biobank.gui.common.BgcPlugin;
import edu.ualberta.med.biobank.gui.common.handlers.LogoutSensitiveHandler;
import edu.ualberta.med.biobank.treeview.admin.SessionAdapter;
import gov.nih.nci.system.applicationservice.ApplicationException;

public class StudyAddHandler extends LogoutSensitiveHandler {
    public static final String ID =
        "edu.ualberta.med.biobank.commands.addStudy"; //$NON-NLS-1$

    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        SessionAdapter sessionAdapter = SessionManager.getInstance()
            .getSession();
        Assert.isNotNull(sessionAdapter);
        sessionAdapter.addStudy();
        return null;
    }

    @Override
    public boolean isEnabled() {
        try {
            if (allowed == null)
                allowed =
                    SessionManager.getAppService().isAllowed(
                        new StudyCreatePermission());
            return allowed
                && SessionManager.getInstance().getSession() != null;
        } catch (ApplicationException e) {
            BgcPlugin.openAsyncError(Messages.HandlerPermission_error,
                Messages.HandlerPermission_message);
            return false;
        }
    }
}