MotionDemo.java

/*
 * Copyright 2008 Google Inc.
 * 
 * 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.
 */
package com.google.gwt.visualization.visualizationshowcase.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JavaScriptException;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.visualization.client.DataTable;
import com.google.gwt.visualization.client.AbstractDataTable.ColumnType;
import com.google.gwt.visualization.client.visualizations.MotionChart;
import com.google.gwt.visualization.client.visualizations.MotionChart.Options;

import java.util.Date;

/**
 * Demo for MotionChart visualization.
 */
public class MotionDemo implements LeftTabPanel.WidgetProvider {
  private Widget widget;

  @SuppressWarnings("deprecation")
  public MotionDemo() {
    
    String protocol = Window.Location.getProtocol();
    if (protocol.startsWith("file")) {
      widget = new HTML("<font color=\"blue\"><i>Note: Protocol is: " + protocol
          + ".  Note that this visualization does not work when loading the HTML from "
          + "a local file. It works only when loading the HTML from a "
          + "web server. </i></font>");
      return;
    }
    
    @SuppressWarnings("unused")
    int year, month, day;

    Options options = Options.create();
    options.setHeight(300);
    options.setWidth(600);

    DataTable data = DataTable.create();
    data.addRows(6);
    data.addColumn(ColumnType.STRING, "Fruit");
    data.addColumn(ColumnType.DATE, "Date");
    data.addColumn(ColumnType.NUMBER, "Sales");
    data.addColumn(ColumnType.NUMBER, "Expenses");
    data.addColumn(ColumnType.STRING, "Location");
    data.setValue(0, 0, "Apples");
    data.setValue(0, 2, 1000);
    data.setValue(0, 3, 300);
    data.setValue(0, 4, "East");
    data.setValue(1, 0, "Oranges");
    data.setValue(1, 2, 950);
    data.setValue(1, 3, 200);
    data.setValue(1, 4, "West");
    data.setValue(2, 0, "Bananas");
    data.setValue(2, 2, 300);
    data.setValue(2, 3, 250);
    data.setValue(2, 4, "West");
    data.setValue(3, 0, "Apples");
    data.setValue(3, 2, 1200);
    data.setValue(3, 3, 400);
    data.setValue(3, 4, "East");
    data.setValue(4, 0, "Oranges");
    data.setValue(4, 2, 900);
    data.setValue(4, 3, 150);
    data.setValue(4, 4, "West");
    data.setValue(5, 0, "Bananas");
    data.setValue(5, 2, 788);
    data.setValue(5, 3, 617);
    data.setValue(5, 4, "West");

    try {
      data.setValue(0, 1, new Date(year = 1988 - 1900, month = 0, day = 1));
      data.setValue(1, 1, new Date(year = 1988 - 1900, month = 0, day = 1));
      data.setValue(2, 1, new Date(year = 1988 - 1900, month = 0, day = 1));
      data.setValue(3, 1, new Date(year = 1988 - 1900, month = 1, day = 1));
      data.setValue(4, 1, new Date(year = 1988 - 1900, month = 1, day = 1));
      data.setValue(5, 1, new Date(year = 1988 - 1900, month = 1, day = 1));
    } catch (JavaScriptException ex) {
      GWT.log("Error creating data table - Date bug on mac?", ex);
    }

    widget = new MotionChart(data, options);
  }

  public Widget getWidget() {
    return widget;
  }
}