gadget.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <Module>
   3
   4   <ModulePrefs
   5       title="dygraphs Gadget"
   6       description="Interactive, zoomable chart"
   7       author="Dan Vanderkam"
   8       author_email="danvdk@gmail.com"
   9       thumbnail="http://danvk.org/dygraphs/thumbnail.png"
  10       >
  11       <!-- TODO(danvk): change these -->
  12       <!--
  13       screenshot="http://www.google.com/ig/modules/simple-table.png"
  14       -->
  15     <Require feature="idi" />
  16     <Require feature="locked-domain" />
  17   </ModulePrefs>
  18
  19   <UserPref name="_table_query_url" display_name="Data source url" required="true"/>
  20   <UserPref name="_table_query_refresh_interval" display_name="Data refresh interval (minutes)" default_value="300" datatype="enum" required="false">
  21     <EnumValue value="0" display_value="Do not refresh"/>
  22     <EnumValue value="60" display_value="1"/>
  23     <EnumValue value="300" display_value="5"/>
  24     <EnumValue value="1800" display_value="30"/>
  25   </UserPref>
  26   <UserPref name="_dg_rollPeriod" display_name="Roll Period" required="false" default_value="1" />
  27   <UserPref name="_dg_showRoller" display_name="Show Roller" required="false" default_value="false" datatype="bool" />
  28   <UserPref name="_dg_minY" display_name="Min Y Value" required="false" default_value="" />
  29   <UserPref name="_dg_maxY" display_name="Max Y Value" required="false" default_value="" />
  30   <UserPref name="_dg_kmb" display_name="KMB labels" required="false" default_value="false" datatype="bool" />
  31   <!--
  32   This is a sample gadget, that uses the Google Visualization API to read data
  33   from a data source, and displays it as an html table.
  34   -->
  35
  36   <Content type="html"><![CDATA[
  37
  38   <!-- Load the Google common loader, that is later used to load the Visualization API. -->
  39   <script src="http://www.google.com/jsapi" type="text/javascript"></script>
  40   <script src="http://danvk.org/dygraphs/dygraph-combined.js" type="text/javascript"></script>
  41
  42   <div id="chartdiv" style="overflow: auto;"><img src="http://www.google.com/ig/images/spinner.gif" /></div>
  43
  44   <script>
  45     var gadgetHelper = null;
  46     var table = null;
  47
  48     _IG_RegisterOnloadHandler(loadVisualizationAPI);
  49
  50     /**
  51      * Load the Google Visualization API
  52      */
  53     function loadVisualizationAPI() {
  54       google.load("visualization", "1");
  55       google.setOnLoadCallback(sendQuery);
  56     }
  57
  58     /**
  59      * Create a query from the user prefs, and then send it to the data source.
  60      * This method is called once the visualization API is fully loaded.
  61      * Note that in the last line, a callback function is specified to be
  62      * called once the response is received from the data source.
  63      */
  64     function sendQuery() {
  65       var prefs = new _IG_Prefs(); // User preferences
  66       var chartDiv = _gel('chartdiv');
  67       chartDiv.style.width = document.body.clientWidth + 'px';
  68       chartDiv.style.height = document.body.clientHeight + 'px';
  69       chart = new DateGraph.GVizChart(chartDiv);
  70
  71       gadgetHelper = new google.visualization.GadgetHelper();
  72       var query = gadgetHelper.createQueryFromPrefs(prefs);
  73       query.send(handleQueryResponse);
  74     }
  75
  76     /**
  77      * Query response handler function.
  78      * Called by the Google Visualization API once the response is received.
  79      * Takes the query response and formats it as a table.
  80      */
  81     function handleQueryResponse(response) {
  82       // Use the visualization GadgetHelper class to validate the data, and
  83       // for error handling.
  84       if (!gadgetHelper.validateResponse(response)) {
  85         // Default error handling was done, just leave.
  86         return;
  87       };
  88       var data = response.getDataTable();
  89
  90       // Take the data table from the response, and format it.
  91       // var options = {showRowNumber: true};
  92       var prefs = new _IG_Prefs(); // User preferences
  93       var showRoller = prefs.getBool("_dg_showRoller");
  94       var rollPeriod = prefs.getInt("_dg_rollPeriod");
  95       var labelsKMB = prefs.getBool("_dg_kmb");
  96       var opts = {
  97         showRoller: showRoller,
  98         rollPeriod: rollPeriod,
  99         labelsKMB: labelsKMB
 100       };
 101
 102       var minY = prefs.getString("_dg_minY");
 103       var maxY = prefs.getString("_dg_maxY");
 104       if (minY && maxY) {
 105         opts.valueRange = [parseInt(minY), parseInt(maxY)];
 106       }
 107
 108       chart.draw(data, opts);
 109     };
 110
 111   </script>
 112
 113   ]]>
 114   </Content>
 115 </Module>