AnnotationFrameModule.java

/*
 * (C) Copyright 2006-2009 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Contributors:
 *     Nuxeo - initial API and implementation
 *
 * $Id$
 */

package org.nuxeo.ecm.platform.annotations.gwt.client;

import org.nuxeo.ecm.platform.annotations.gwt.client.configuration.WebConfiguration;
import org.nuxeo.ecm.platform.annotations.gwt.client.configuration.WebConfigurationService;
import org.nuxeo.ecm.platform.annotations.gwt.client.configuration.WebConfigurationServiceAsync;

import com.allen_sauer.gwt.log.client.Log;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.rpc.AsyncCallback;

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class AnnotationFrameModule implements EntryPoint {

    private WebConfigurationServiceAsync webConfigurationService;

    private WebConfiguration webConfiguration;

    /**
     * This is the entry point method.
     */
    public void onModuleLoad() {
        waitForAnnoteaServerUrlRegistered();
    }

    private void waitForAnnoteaServerUrlRegistered() {
        Timer timer = new Timer() {
            @Override
            public void run() {
                if (isAnnoteaServerUrlRegistered()) {
                    loadModule();
                } else {
                    schedule(200);
                }
            }
        };
        timer.schedule(200);
    }

    private void loadModule() {
        webConfigurationService = GWT.create(WebConfigurationService.class);
        String url = getParentWindowUrl();
        webConfigurationService.getWebConfiguration(url, new AsyncCallback<WebConfiguration>() {
            public void onFailure(Throwable throwable) {
                Log.debug("onFailure: " + throwable);
                webConfiguration = WebConfiguration.DEFAULT_WEB_CONFIGURATION;
                initModule();
            }

            public void onSuccess(WebConfiguration result) {
                webConfiguration = result == null ? WebConfiguration.DEFAULT_WEB_CONFIGURATION : result;
                initModule();
                Log.debug("Module initialization finished.");
            }
        });
    }

    private native boolean isAnnoteaServerUrlRegistered() /*-{
                                                          if (top['annoteaServerUrlRegistered']) {
                                                          return top['annoteaServerUrlRegistered'];
                                                          }
                                                          return false;
                                                          }-*/;

    private native String getParentWindowUrl() /*-{
                                               return $wnd.parent.location.href;
                                               }-*/;

    private void initModule() {
        AnnotationFrameApplication.build(webConfiguration);
    }

}