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Dynamically update custom text element for print template layout

Question asked by ingenue3911 on Nov 25, 2016
Latest reply on Dec 6, 2016 by rscheitlin

I'm working on setting custom text elements via the template layout options for a print task to be used in a print widget. I am trying to get the custom text to display the lat long coordinates of the current map extent.

 

I followed this sample to get the widget up and going. However, it sets up the template layouts and starts up the print widget when the app is loaded. This means that my "current" map extent for the layout is the initial map extent. Any suggestions on how to get the template custom text element to update to the current map extent? For the moment, I'm thinking that I have to set up and start up the print widget every time the extent changes...

 

Here is what I have so far:

require([
"esri/layers/FeatureLayer",
"esri/dijit/Print",
"esri/tasks/PrintTemplate",
"esri/request",
"esri/config",
"dojo/_base/array",
"dojo/dom",
], function(
FeatureLayer,
Print, PrintTemplate,
esriRequest, esriConfig,
arrayUtils, dom
) {

//var printUrl = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/PrintingTools/GPServer/Export%20Web%20Map%20Task";
var printUrl = "http://ourserver/arcgis/rest/services/Our_Tools/Our_Print_Tool/GPServer/Exporter%20une%20carte%20Web";

esriConfig.defaults.io.proxyUrl = "http://ourserver/Java/proxy.jsp";

dojo.connect(window.myMap, "onExtentChange", showExtent);

// get print templates from the export web map task
var printInfo = esriRequest({
"url": printUrl,
"content": {
"f": "json"
}
});
printInfo.then(handlePrintInfo, handleError);

var center = "";
var latLong = "";

function handlePrintInfo(resp) {
var layoutTemplate, templateNames, mapOnlyIndex, templates;

showExtent(window.myMap.extent)

layoutTemplate = arrayUtils.filter(resp.parameters, function(param, idx) {
  return param.name === "Layout_Template";
});

if ( layoutTemplate.length === 0 ) {
console.log("print service parameters name for templates must be \"Layout_Template\"");
return;
}
templateNames = layoutTemplate[0].choiceList;

// remove the MAP_ONLY template then add it to the end of the list of templates
mapOnlyIndex = arrayUtils.indexOf(templateNames, "MAP_ONLY");
if ( mapOnlyIndex > -1 ) {
var mapOnly = templateNames.splice(mapOnlyIndex, mapOnlyIndex + 1)[0];
templateNames.push(mapOnly);
}

// create a print template for each choice
templates = arrayUtils.map(templateNames, function(ch) {
var plate = new PrintTemplate();
plate.layout = plate.label = ch;
plate.format = "PDF";
plate.layoutOptions = {
customTextElements : [
{
centerLatLong: latLong,
centerXY: center
}
]
};
return plate;
});

// create the print dijit
printer = new Print({
"map": window.myMap,
"templates": templates,
url: printUrl
}, dom.byId("print_button"));
printer.startup();
}

function showExtent(extent) {
var lat = window.myMap.extent.getCenter().getLatitude().toFixed(2);
var long = window.myMap.extent.getCenter().getLongitude().toFixed(2);

latLong = "Latitude : " + lat + " - Longitude : " + long;

var X = window.myMap.extent.getCenter().x.toFixed(2);
var Y = window.myMap.extent.getCenter().y.toFixed(2);

center = "X : " + X + " - Y : " + Y;

console.log(latlong);
console.log(center);
}

function handleError(err) {
console.log("Something broke: ", err);
}
});









 

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