1

Surpriseplus

2022-09-16 8d1a91c23df335b090e38b2edd15203aa3b03da9

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
function define(f)
{
    JsonGMLParser = f();
}
importScripts('txml.js');
importScripts('JsonGMLParser.js');
 
self.addEventListener('message', function (e) {
    var gmlParser = new JsonGMLParser(true /*extractAttributes */,
                                      true  /*xy */,
                                      undefined /*gmlnsm*/,
                                      undefined /*wfsnsm*/,
                                      undefined /*featureName*/,
                                      e.data.geometryFieldName);
    var data = e.data;
    var json = tXml(data.text, {simplify:true});
    var features = gmlParser.read(json);
    delete data.text;
    data.features = features;
    postMessage(data);
    /*
    load('data.json', function(xhr) {    
        var result = xhr.responseText;
        var features = gmlParser.read(data.document);
        postMessage({id: data.id, features: features});
    });
    */
});
/*
//simple XHR request in pure JavaScript
function load(url, callback) {
    var xhr;
 
    if(typeof XMLHttpRequest !== 'undefined') xhr = new XMLHttpRequest();
    else {
        var versions = ["MSXML2.XmlHttp.5.0", 
                 "MSXML2.XmlHttp.4.0",
                 "MSXML2.XmlHttp.3.0", 
                 "MSXML2.XmlHttp.2.0",
                 "Microsoft.XmlHttp"]
 
        for(var i = 0, len = versions.length; i < len; i++) {
        try {
            xhr = new ActiveXObject(versions[i]);
            break;
        }
            catch(e){}
        } // end for
    }
        
    xhr.onreadystatechange = ensureReadiness;
        
    function ensureReadiness() {
        if(xhr.readyState < 4) {
            return;
        }
            
        if(xhr.status !== 200) {
            return;
        }
 
        // all is well    
        if(xhr.readyState === 4) {
            callback(xhr);
        }            
    }
        
    xhr.open('GET', url, true);
    xhr.send('');
}
*/