User:Proteins/genericgeotagscript.js

//

// Generic script for doing something fun with an article's geotag
// Planned example: generate a star chart for that location, with two sliders for day and time
//
// To use this script, add "importScript('User:Proteins/genericgeotagscript.js');" to your monobook.js subpage
// under your user page, as you can see at User:Proteins/monobook.js
function reportGeotagCoordinates() {
var latitude;
var longitude;
var top_node;
var parent_node;
var parent_class_name;
var spans;
var temp_span;
var num_spans = 0;
var span_index = 0;
var span_class_name = 0;
var latitude = 0.0;
var longitude = 0.0;
// Get the bodyContent node
top_node = document.getElementById('bodyContent');
if (!top_node) {
window.alert("There is no bodyContent node in this article.");
return;
}
// Get a list of the spans
spans = top_node.getElementsByTagName("SPAN");
if (!spans) {
window.alert("There are no SPAN tags in this article.");
return;
}
num_spans = spans.length;
if (num_spans < 1) {
window.alert("There are no spans in this article.");
return;
}
// Loop over the spans
latitude = 0.0;
longitude = 0.0;
latitude_is_defined = false;
longitude_is_defined = false;
for (span_index=0; span_index
temp_span = spans[span_index];
if (!temp_span) { continue; }
span_class_name = temp_span.className;
if (!span_class_name) { continue; }
// Get the latitude
if (span_class_name == "latitude") {
parent_node = temp_span.parentNode;
parent_class_name = parent_node.className;
if (parent_class_name != "geo-dec geo") { continue; }
latitude = temp_span.innerHTML;
latitude_is_defined = true;
}
// Get the longitude
if (span_class_name == "longitude") {
parent_node = temp_span.parentNode;
parent_class_name = parent_node.className;
if (parent_class_name != "geo-dec geo") { continue; }
longitude = temp_span.innerHTML;
longitude_is_defined = true;
}
} // closes loop over spans
if ((longitude_is_defined) && (latitude_is_defined)) {
window.alert("Latitude = " + latitude + " \t Longitude = " + longitude + "\n");
} else {
window.alert("The geotag latitude and longitude coordinates were not found on this page.\n");
}
} // closes function reportGeotagCoordinates()
$(function () {
mw.util.addPortletLink('p-cactions', 'javascript:reportGeotagCoordinates()', 'geo', 'ca-geotag', 'Report the article geotag coordinates', 'g', '');
});
//