com.google.gwt.sample.healthyeatingapp.client.Homepage.java Source code

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Here is the source code for com.google.gwt.sample.healthyeatingapp.client.Homepage.java

Source

package com.google.gwt.sample.healthyeatingapp.client;

import com.google.gwt.user.client.Cookies;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.ServiceDefTarget;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.TabPanel;
import com.google.gwt.visualization.client.DataTable;
import com.google.gwt.visualization.client.VisualizationUtils;
import com.google.gwt.visualization.client.visualizations.corechart.CoreChart;
import com.google.gwt.core.client.GWT;
import com.google.gwt.sample.healthyeatingapp.client.Graph;
import com.google.gwt.sample.healthyeatingapp.client.FoodLog.FoodLog;
import com.google.gwt.sample.healthyeatingapp.client.SocialMedia.SocialMedia;
import com.google.gwt.user.client.rpc.AsyncCallback;

public class Homepage extends Composite {

    //create our own custom widget for Navigation container
    private final TabPanel tp = new TabPanel();
    private final DBConnectionServiceAsync rpc;

    public Homepage() {
        initWidget(tp);
        // Add a home tab
        tp.add(new FoodLog(tp).onModuleLoad(), "Food Log");
        tp.add(new SocialMedia().SocialMediaWebPageLoad(), "Social Media");
        this.rpc = (DBConnectionServiceAsync) GWT.create(DBConnectionService.class);
        ServiceDefTarget target = (ServiceDefTarget) rpc;
        String moduleRelativeURL = GWT.getModuleBaseURL() + "DBConnectionServiceImpl";
        target.setServiceEntryPoint(moduleRelativeURL);

        Runnable onLoadCallBack = new Runnable() {
            @Override
            public void run() {
                String username = Cookies.getCookie("healthy_app_user");
                rpc.getUserCalories(username, new AsyncCallback<String>() {

                    @Override
                    public void onFailure(Throwable caught) {
                        // Show the RPC error message to the user
                        Window.alert("No log records for user:" + Cookies.getCookie("healthy_app_user"));
                    }

                    @Override
                    public void onSuccess(String result) {
                        // TODO Auto-generated method stub
                        DataTable data = toDataTable(result);
                        tp.add(new Graph().returnGraph(data), "Graph");
                    }
                });
            }
        };

        VisualizationUtils.loadVisualizationApi(onLoadCallBack, CoreChart.PACKAGE);
    }

    public static native DataTable toDataTable(String json) /*-{
                                                            return new $wnd.google.visualization.DataTable(eval("(" + json + ")"));
                                                            }-*/;
}