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://dygraphs.com/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   <UserPref name="_dg_errorbars" display_name="Error Bars" required="false" default_value="false" datatype="bool" />
  32   <UserPref name="_dg_fillGraph" display_name="Fill Chart" required="false" default_value="false" datatype="bool" />
  33   <!--
  34   This is a sample gadget, that uses the Google Visualization API to read data
  35   from a data source, and displays it as an html table.
  36   -->
  37
  38   <Content type="html"><![CDATA[
  39
  40   <!-- Load the Google common loader, that is later used to load the Visualization API. -->
  41   <script src="http://www.google.com/jsapi" type="text/javascript"></script>
  42   <script src="http://dygraphs.com/dygraph-combined.js" type="text/javascript"></script>
  43
  44   <div id="chartdiv" style="overflow: auto;"><img src="http://www.google.com/ig/images/spinner.gif" /></div>
  45
  46   <script>
  47     var gadgetHelper = null;
  48     var table = null;
  49
  50     _IG_RegisterOnloadHandler(loadVisualizationAPI);
  51
  52     /**
  53      * Load the Google Visualization API
  54      */
  55     function loadVisualizationAPI() {
  56       google.load("visualization", "1");
  57       google.setOnLoadCallback(sendQuery);
  58     }
  59
  60     /**
  61      * Create a query from the user prefs, and then send it to the data source.
  62      * This method is called once the visualization API is fully loaded.
  63      * Note that in the last line, a callback function is specified to be
  64      * called once the response is received from the data source.
  65      */
  66     function sendQuery() {
  67       var prefs = new _IG_Prefs(); // User preferences
  68       var chartDiv = _gel('chartdiv');
  69       chartDiv.style.width = document.body.clientWidth + 'px';
  70       chartDiv.style.height = document.body.clientHeight + 'px';
  71       chart = new DateGraph.GVizChart(chartDiv);
  72
  73       gadgetHelper = new google.visualization.GadgetHelper();
  74       var query = gadgetHelper.createQueryFromPrefs(prefs);
  75       query.send(handleQueryResponse);
  76     }
  77
  78     /**
  79      * Query response handler function.
  80      * Called by the Google Visualization API once the response is received.
  81      * Takes the query response and formats it as a table.
  82      */
  83     function handleQueryResponse(response) {
  84       // Use the visualization GadgetHelper class to validate the data, and
  85       // for error handling.
  86       if (!gadgetHelper.validateResponse(response)) {
  87         // Default error handling was done, just leave.
  88         return;
  89       };
  90       var data = response.getDataTable();
  91
  92       // Take the data table from the response, and format it.
  93       // var options = {showRowNumber: true};
  94       var prefs = new _IG_Prefs(); // User preferences
  95       var showRoller = prefs.getBool("_dg_showRoller");
  96       var rollPeriod = prefs.getInt("_dg_rollPeriod");
  97       var labelsKMB = prefs.getBool("_dg_kmb");
  98       var errorBars = prefs.getBool("_dg_errorbars");
  99       var fillGraph = prefs.getBool("_dg_fillGraph");
 100       var opts = {
 101         showRoller: showRoller,
 102         rollPeriod: rollPeriod,
 103         labelsKMB: labelsKMB,
 104         errorBars: errorBars,
 105         fillGraph: fillGraph
 106       };
 107
 108       var minY = prefs.getString("_dg_minY");
 109       var maxY = prefs.getString("_dg_maxY");
 110       if (minY && maxY) {
 111         opts.valueRange = [parseInt(minY), parseInt(maxY)];
 112       }
 113
 114       chart.draw(data, opts);
 115     };
 116
 117   </script>
 118
 119   ]]>
 120   </Content>
 121 </Module>