Replace deprecated DOM.setElementAttribute().

[online-glom:gwt-glom.git] / src / main / java / org / glom / web / client / activity / HasDocumentActivity.java

/*
 * Copyright (C) 2012 Openismus GmbH
 *
 * This file is part of GWT-Glom.
 *
 * GWT-Glom is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * GWT-Glom is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with GWT-Glom.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.glom.web.client.activity;

import org.glom.web.client.ClientFactory;
import org.glom.web.client.OnlineGlomLoginServiceAsync;
import org.glom.web.client.StringUtils;
import org.glom.web.client.place.DocumentLoginPlace;
import org.glom.web.client.place.HasDocumentPlace;
import org.glom.web.client.ui.View;

import com.google.gwt.activity.shared.AbstractActivity;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.place.shared.Place;
import com.google.gwt.user.client.rpc.AsyncCallback;

/**
 * @author Ben Konrath <ben@bagu.org>
 *
 */
public abstract class HasDocumentActivity extends AbstractActivity implements View.Presenter {

        protected final ClientFactory clientFactory;
        protected final String documentID;

        /**
         * 
         */
        public HasDocumentActivity(final HasDocumentPlace place, final ClientFactory clientFactory) {
                super();
                this.documentID = place.getDocumentID(); // TODO: Just store the place?
                this.clientFactory = clientFactory;
        }

        @Override
        public void goTo(final Place place) {
                clientFactory.getPlaceController().goTo(place);
        }

        /**
         * @param eventBus
         */
        protected void checkAuthentication(final EventBus eventBus) {
                if(StringUtils.isEmpty(documentID)) {
                        //TODO: Show that no document was chosen?
                        return;
                }

                // check if the authentication info has been set for the document
                final AsyncCallback<Boolean> isAuthCallback = new AsyncCallback<Boolean>() {
                        @Override
                        public void onFailure(final Throwable caught) {
                                // TODO: create a way to notify users of asynchronous callback failures
                                GWT.log("AsyncCallback Failed: OnlineGlomService.isAuthenticated(): " + caught.getMessage());
                        }
        
                        @Override
                        public void onSuccess(final Boolean result) {
                                if (!result) {
                                        //If the user/session is not authenticated,
                                        //then go to the login page, so he can try:
                                        goTo(new DocumentLoginPlace(documentID));
                                }
                        }
                };
                OnlineGlomLoginServiceAsync.Util.getInstance().isAuthenticated(documentID, isAuthCallback);
        }
        
        protected void clearView() {
        }

}