https://stackoverflow.com/questions/21185260
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RussianIt's a bit more difficult.
The infowindow of a FTLayer doesn't open immediately, because the data for the infowindow will be requested asynchronously.
When you call drawVisualization immediately there is no guarantee that the infowindow-content is already available in the DOM, the #visualization_div will not be available yet.
The problem: there is no domready-event for the infowindow of the FTLayer, you'll never know when the infowindow is ready.
Another problem: the chart will also be drawn asynchronously, the result would be a undesirable look of the infowindow(the chart will be drawn under the infowindow, not inside)
Possible solution(there may be others): use a custom infowindow instead:
<script type="text/javascript">
google.load('visualization', '1', {packages: ['corechart']});
//pass the infowindow as argument, we need it later
function drawVisualization(infowindow) {
var queryText = encodeURIComponent("SELECT Year, Austria, Bulgaria, \
Denmark, Greece FROM 641716");
/*note: we don't need the ContainerId here,
we use the node-reference with draw
*also note: we use ChartWrapper here, because we need
the ready-event of the chart to redraw the infowindow
*/
var chart=new google.visualization.ChartWrapper({
"dataSourceUrl": 'https://www.google.com/fusiontables/gvizdata?tq=',
"query":"SELECT Year, Austria, Bulgaria, Denmark, Greece FROM 641716",
"refreshInterval": 5,
"chartType": "PieChart",
"options": {
"title":"Yearly Coffee Consumption by Country",
"vAxis": {"title": "Year"},
"hAxis": {"title": "Cups"}
}
});
var ready=google.visualization.events.addListener(chart, 'ready', function(){
//re-assign the map-property to redraw the
//infowindow when the chart has been drawn
infowindow.setMap(infowindow.getMap());
//remove the ready-listener
google.visualization.events.removeListener(ready);
});
//draw the chart
chart.draw(infowindow.getContent().lastChild);
}
function initialize() {
map = new google.maps.Map(document.getElementById('map-canvas'), {
center: new google.maps.LatLng(29.296435107347698, -29.54822280000008),
zoom: 2,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var layer = new google.maps.FusionTablesLayer({
query: {
select: 'col0',
from: '1PoUAVtdJKOKnJT_ZYkoM7yDpGw-wNJMHXakPeC0'
},
map: map,
//don't use the infowindows of the FTLayer
suppressInfoWindows:true
});
//a custom infowindow
infowindow=new google.maps.InfoWindow();
google.maps.event.addListener(layer, 'click', function(e) {
//call drawVisualization when the infowindow is ready
google.maps.event.addListenerOnce(infowindow,'domready',function(){
drawVisualization(infowindow);
});
//create the content for the infowindow
var node=document.createElement('div');
node.innerHTML=e.infoWindowHtml;
//create the node where the chart will be drawn
node.appendChild(document.createElement('div'));
//open the infowindow
infowindow.setOptions({position:e.latLng,content:node,map:map});
});
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
